TWI555944B - Machine-supporting arm - Google Patents

Description

Machine support arm

The present invention relates to a machine support arm for supporting a monitor, a personal computer, a television, and various other devices to be freely moved in the left-right direction or the up-and-down direction.

In the past, various devices such as monitors, personal computers, and televisions have been installed in offices, homes, and the like, and are installed in various types of machine support arms, such as vehicles, airplanes, and ships. Generally, the plurality of arms of the machine support arm are mutually rotatable through the hinge device, and the arms are connected at an arbitrary rotation angle, and the base end arms are fixed at the installation, and various machines are installed at the front end. The side arms, and the various machines are placed at the installation in a manner that is freely movable within the length of each arm. Such a machine support arm is proposed, for example, by JP-9-326980-A. The support arm of the document is rotatably connected through a joint (hinge device) having rotational resistance, and the information monitor is pivoted to the front end of the support arm, and the information monitor is oriented in a desired direction. Keep it.

However, in the above-described conventional machine support arm, each of the joint members between the plurality of arms is constituted by a hinge mechanism that applies a frictional resistance between the arms by a disc spring and a washer, and the like only uses the disc spring. The frictional resistance of the washer or the like is applied to receive the load of each type of machine such as a monitor and the load of each arm, so that the angle between the arms is maintained for the joint member. In terms of ability, the load becomes too large. Therefore, there is a problem in that the support arm is gradually lowered in use, and the ability to support various devices such as a monitor is gradually lowered, and the machine is gradually lowered, and cannot be stably maintained at a predetermined position required by the user for a long time. . Further, there is a problem that such a machine support arm is susceptible to vibration when used, for example, in a vehicle or the like, and the supported machine is liable to be lowered, and it is difficult to stably support the position most suitable for use by the user for a long time.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a machine support arm of a high quality, which can stably hold various devices such as monitors at a predetermined position required by a user for a long period of time.

In order to achieve the above object, a machine support arm according to the present invention includes a plurality of arms, and the adjacent arms are coupled to each other by a hinge device so as to be rotatable and adjacent to each other, and the arms can be maintained at an arbitrary rotation angle. In the plurality of arms, the arms on the base end side are fixed at the mounting portion, and the various machines are mounted on the arms on the front end side, and the various machines are disposed at the mounting position in a movable manner within the length of the aforementioned arms, and the foregoing The hinge device includes a bearing, a substantially cylindrical bearing formed at a connecting end of one of the arms adjacent to the arm, and a substantially cylindrical shape formed at a connecting end of the other arm so as to be relatively rotatable a bearing coupled to the bearing; the shaft is inserted between the bearings adjacent to the arm; the fixed side positioning guide is disposed on the outer circumferential surface of the substantially cylindrical bearing, and includes a plurality of grooves formed in the circumferential direction Or hole The movable side positioning guide is disposed in a forwardly retractable manner with respect to the fixed side positioning guide, and is disposed on the other arm, and is configured to be normally positioned from the fixed side by a spring means The guide member is separated, and has a claw or a protrusion engageable with the groove or the hole at a first end portion opposite to the fixed side positioning guide; the rod has a pressing member for positioning the movable side Pressing the member toward the fixed side positioning guide; and the locking portion is disposed on the movable side positioning guide or the other arm, and in a state where the movable side positioning guide is pressed against the fixed side positioning guide Engaged with the pressing member or another part of the rod to restrict the operation of the rod, and the positioning guides on the fixed side and the movable side are in a non-engaged state, and the arms are mutually facing each other Rotating in the direction or the up-and-down direction to adjust the aforementioned arm to an arbitrary rotation angle, and by rotating the rod to a predetermined direction, and using the pressing member to move the movable side The guide member is pressed toward the fixed side positioning guide, and the pressing member or another part of the rod is fitted to the locking portion, and the arm is locked at an arbitrary rotation angle, and the rod is turned toward The rotating operation is performed in a direction opposite to the predetermined direction, and the pressing member or the other portion of the lever is engaged with the locking portion to release the lock between the arms.

The present invention preferably has the following configuration in each part.

(1) a bearing formed at the joint end of the other arm is formed by The shaft core has one of the shaft insertion holes and the bearing portion, and the substantially cylindrical bearing can be fitted between the pair of bearing portions and has a substantially semi-cylindrical shape with a shaft insertion hole on the shaft core. a bearing formed by the bearing, wherein the substantially semi-cylindrical bearing is interposed between the pair of bearing portions such that the shaft insertion hole is engaged with the shaft core of the shaft insertion hole, and the shaft shaft passes The shaft insertion hole and the shaft insertion hole are inserted.

(2) a first end support portion for supporting the movable end positioning guide having the first end side of the claw or the protrusion and a second end support portion for supporting the second end side opposite to the side, The first end portion of the movable side positioning guide is supported by the first end support portion, and the second end portion is supported by the second end support portion, and the first end portion of the movable side positioning guide is supported by the second end support portion. a coil spring interposed between the second end portion side and the second end support portion, the coil spring being configured to move the movable side positioning guide from the first end support portion side toward the second end support portion The side is pulled; and by the coil spring, the movable side positioning guide is normally given a potential energy in a direction in which the positioning guide is separated from the fixed side.

(3) The movable side positioning guide has a substantially rectangular plate shape, and a composite-shaped opening is formed between both side surfaces thereof, and the opening is formed from the second end side of the movable side positioning guide toward the first end a long hole shape extending laterally, and a shaft insertion portion for pivoting the shaft member of the movable side positioning guide is provided on the second end side of the long hole shape, and at the first end portion The pressing member insertion portion that is inserted into the pressing member is provided on the side, and the pressing member insertion portion has a pressed portion that is pressed by the pressing member, and a locking portion that is a pressing member on the terminal side of the pressed portion. It The locking groove receives the pressing force of the inserted pressing member, and the movable-side positioning guide is pressed and moved toward the fixed-side positioning guide, and the pressing member is fitted into the locking groove. The rod is fixedly fixed, and the rod includes a rod body and a pair of rod base portions formed at a shaft-side end portion of the rod body, and the pair of rod base portions are formed in the side of the movable side positioning guide in a side by side arrangement On both sides, each of the rod bases has a shaft through hole and a pressing member through hole corresponding to the shaft insertion portion and the pressing member insertion portion, and is inserted between the pressing member through holes through the pressing member of the movable side positioning guide The roller shaft that is inserted through the through portion is provided with the pressing member composed of a roller, and the movable side positioning guide and the rod are disposed between the two sides of the other arm, and the rod body is from the other side The inner portion of the arm protrudes to the outside, and the shaft member disposed between the two sides of the other arm is inserted into the shaft through hole of the rod base and the shaft member of the movable side positioning guide In the through portion, the rod is disposed to be tiltably movable between the second end portion of the movable side positioning guide and the first end portion, and the movable side positioning guide is disposed by the tilting movement of the rod In the pressing member insertion portion, the pressing member is disposed to be pressable to the pressing portion and engageable with the locking groove, and the movable side positioning guide is disposed by the pressing of the pressing member Crimp the positioning guide on the fixed side.

(4) The plurality of arms include a base end arm, an intermediate arm, and a front end side arm, and the base end side arm includes a fixed base for supporting and fixing the machine support arm integrally at the mounting portion, and the front end side arm is provided Used to install various The base of the machine.

(5) the base and the front end side arm are rotatable by a bearing provided on a back side of the base, a bearing provided on the front end side arm, and a shaft inserted between the bearings The front end side arm is attached to a direction orthogonal to a rotation direction of the arm, and the rotation angle of the base relative to the front end side arm is fixedly held by a locking device. The lock device includes a plurality of locking grooves or locking holes formed in a substantially arc shape around a shaft of one of the base or the front end side arm, and is formed around the shaft of the other bearing portion. And the at least one guiding hole on the locking groove or the locking hole may be relatively moved together with the rotation of the base; and the guiding hole may be disposed in a forwardly retractable manner toward the locking groove or the locking hole And the locking pin that is normally pushed toward the locking groove or the locking hole by the spring means, and the locking pin is engaged with the locking groove or the locking hole by the sliding operation of the locking pin.

(6) The base is formed in a substantially planar shape, and is rotatably attached to a bearing on the back side by being inserted through a shaft substantially at the center thereof, and is used around the shaft of the bearing on the back side. A screw type brake inserted in a manner to press the back surface of the base to fix and maintain the rotation angle of the base.

The machine support arm according to the present invention is configured by the above-described configuration of the hinge device by interposing a plurality of grooves or holes between adjacent arms. a side positioning guide, and a movable side positioning guide having a claw or a protrusion, and adjusting the arms to each other in an arbitrary rotation angle in the left-right direction or the up-and-down direction, and rotating the lever to a predetermined direction, and using the pressing member Pressing the claw or the protrusion of the movable side positioning guide toward the groove or hole of the fixed side positioning guide, and engaging the pressing member or other part of the rod with the locking portion, and locking the arm between the rotations Since the angle is adjusted, it is easy to adjust the plurality of arms to an arbitrary angle, and it can be firmly fixed, and the various machines such as the monitor can be stably held at a predetermined position required by the user for a long time. Further, by rotating the lever to a direction opposite to the predetermined direction, the fitting of the pressing member or the other portion of the lever and the locking portion is released, and the locking between the arms can be released, so that the arm can be easily performed. Adjustment of the angle between the changes.

Next, the drawings will be used to explain the form of the present invention. Further, in this embodiment, the machine support arm of the present invention is exemplified as a monitor arm for setting a monitor in a vehicle such as a passenger car or a truck, and the machine support arm is referred to as the following description. Monitor arm.

As shown in FIGS. 1 and 2, the monitor arm 1 includes a plurality of arms 11, 12, and 13. The arms 11, 12, 13 are connected to each other by a hinge device 2, 2, and are rotatable in a horizontal direction (left-right direction) or a vertical direction (up-and-down direction), and can be held between the arms 11, 12, and 13 The angle of rotation is linked in a way. Further, a fixed bottom plate 14 such as a dashboard for supporting the arms 11 to 13 integrally and fixed in the vehicle interior of the mounting portion is provided at the proximal end side arm 11, and the front end side arm 13 is provided for Installation monitor Base plate 15.

In the case of the monitor arm 1 of this embodiment, the plurality of arms 11, 12, 13 are constituted by the base end side arm 11, the intermediate arm 12, and the three arms of the front end side arm 13. The intermediate arm 12 is the longest, the proximal end side arm 11 is the shortest, and the front end side arm 13 is shorter than the intermediate arm 12 and longer than the proximal end side arm 11.

As shown in Figs. 1 and 2, the intermediate arm 12 is generally formed of an aluminum plate and has a substantially rectangular shape having a predetermined length, and has an upper surface 121, a lower surface 122, and two side surfaces 123, 123. Further, the front end faces of the front end side arm 13 and the proximal end side arm 11 are opened before the rear end faces are formed, and the bearings 22, 22 are formed. In this embodiment, the intermediate arm 12 is formed such that the upper and lower cross-sections of the upper and lower U-shaped arm members and the lower-side arm members are integrally joined to form a hollow body. Corner tube. The upper and lower surfaces 121, 122 are formed in an elongated rectangular shape, and the pair of bearing portions 221, 221, and 221, 221 are formed in the front and rear edges, respectively, and protrude from the front and rear sides of the two side faces 123, 123 in a substantially arc shape, and The shaft insertion holes 220 and 220 are formed through the center thereof, and the bearings 23 and 21 of the front end side arm 13 and the base end side arm 11 which will be described later can be fitted. Further, in the rear center portion of the upper surface 121, a slit 124 for allowing the rear bar 6 to pass through is formed in the front-rear direction, and the center portion of the lower surface 122 is formed in the front-rear direction for use in the front-rear direction. A slit 125 is passed through the rod 6. The two side faces 123, 123 are each formed in an elongated rectangular shape, and each of the side faces 123 is formed at a predetermined position corresponding to the center in the front-rear direction of the slits 124, 125 provided on the upper surface 121 and the lower surface 122, respectively, and the shaft insertion holes are respectively formed. 126,126. For the shaft insertion holes provided in each side surface 123 126, the shaft member 7 for supporting the rod 6 described later is inserted. Further, the upper surface 121, the lower surface 122, and the two side surfaces 123, 123 of the intermediate arm 12 are mounted at appropriate positions with clamps 127 for restricting various cables extending from the monitor.

As shown in FIGS. 4 and 5, the inside of the intermediate arm 12 supports the first end support portions 24, 24 on the end side of one of the movable side positioning guides 4, 4, which will be described later, and the support thereof. The second end support portions 25, 25 on the opposite side end sides are respectively disposed at predetermined positions before and after the respective shaft member insertion holes 126, 126, 126, 126. In this embodiment, the first end support portions 24, 24 are integrally formed into a frame structure that can be fitted into the intermediate arm 12, and have a movable side positioning guide 4 slidably in the center thereof. The first ends of 4 are held by frames 241, 241. Each of the first end support portions 24, 24 is adjacent to the pair of bearing portions 221, 221 at a predetermined position between the side faces 123, 123, and is attached by screws. The second end support portions 25, 25 are integrally formed in a plate shape engageable in the intermediate arm 12, and have substantially the center thereof for slidable the second end portions of the movable side positioning guides 4, 4. The insertion holes 250, 250 are inserted through the support. Each of the second end support portions 25, 25 is attached to a predetermined position on the center side in the front-rear direction between the side faces 123, 123 by a screw.

As shown in Figs. 1 and 2, the proximal end side arm 11 is entirely in the form of a block having a predetermined length made of an aluminum alloy. A substantially cylindrical bearing 21 is formed at an end portion of the connecting end with the intermediate arm 12, and a fixed side positioning guide formed of a plurality of grooves or holes provided in the circumferential direction is formed on the outer peripheral surface. 3. In this embodiment, the proximal side arm 11 is composed of It has a block having a semi-cylindrical shape at the front end and a composite shape at the rear end. The semi-cylindrical front end portion is formed to be engageable with one of the rear end portions of the intermediate arm 12 and between the bearing portions 221 and 221, and a shaft through hole 210 is formed through the shaft core to form a semi-cylindrical bearing. twenty one. Further, as shown in FIGS. 2 and 4, a plurality of longitudinal grooves 301 are formed in the circumferential direction on the outer circumferential surface of the bearing 21, and are formed in a gear shape. This gear shape forms a fixed side positioning guide 3. The rear end side arm 11 is formed with an angular portion extending rearward of the bearing 21, and a substantially rectangular concave portion is formed at the rear, and a screw hole 110 for fixing the base is provided at four corners thereof.

As shown in FIGS. 1 and 2, the distal end side arm 13 is entirely in the form of a block having a predetermined length made of an aluminum alloy. A substantially cylindrical bearing 23 is formed at a rear end portion of the connecting end with the intermediate arm 12, and a fixed side positioning guide formed by a plurality of grooves or holes provided in the circumferential direction is formed on the outer peripheral surface thereof. 3. In this embodiment, the front end side arm 13 is constituted by a block having a semi-cylindrical shape at the rear end portion and a pair of fan-shaped flat plates at the front end portion. The substantially semi-cylindrical rear end portion is formed in the same shape as the front end portion of the proximal end side arm 11 and is formed to be engageable between one of the front end portions of the intermediate arm 12 and the bearing portions 221 and 221, and is formed in the axial core. The shaft is inserted into the pocket 230 to form a semi-cylindrical bearing 23. Further, as shown in FIGS. 2 and 4, a plurality of longitudinal grooves 301 are formed in the circumferential direction on the outer circumferential surface of the bearing 23 to have a gear shape. This gear shape forms a fixed side positioning guide 3. The shaft insertion holes 130, 130 are formed through the center of each of the flat plates 131 forming the front end portion. a pair of plates 131, 131 are attached to it The bearing portions 131, 131 for mounting the base plate 15 are formed by projecting forward from the front portion of the outer peripheral surface of the bearing 23 with a constant interval therebetween. Further, a plurality of small grooves or holes are arranged in a substantially circular arc around the arc-shaped edge portion around the one or one of the shaft insertion holes 130 of the flat plates 131 and 131 forming the pair of bearing portions. Formed like a shape. These grooves or holes form a locking groove (or locking hole) 81 of a locking device 8 to be described later.

As shown in FIGS. 4 and 5, the hinge devices 2 and 2 each include a substantially cylindrical bearing 21 formed at a connecting end of one of the arms 11 and 13 in the adjacent arms 11/12 and 12/13. 23; bearings 22, 22 formed at the joint ends of the other arms 12, 12 and bearings 21, 23 coupled in a relatively rotatable manner; bearings 21, 22 and arms 12 inserted through the arms 11 and 12, a shaft 212, 222 between the bearings 22, 23; a fixed side positioning guide 3 disposed on the outer circumferential surface of the bearing 21, 23; an arm 12 disposed on the other side, and positioning the guide 3 relative to the fixed side in a forward and backward manner a movable side positioning guide 4; a rod 6 having a pressing member 51 capable of pressing the movable side positioning guide 4 toward the fixed side positioning guide 3; and positioning the movable side positioning guide 4 against the fixed side The lock portion 52 that engages with the pressing member in a state where the guide 3 is pressed to control the operation of the lever 6 is performed. The movable side positioning guide 4 is disposed by a spring means, and is normally disposed apart from the fixed side positioning guide 3, and has a claw 401 engageable with the groove 301 at an end portion opposed to the fixed side positioning guide 3. The lever 6 and the lock portion 52 are rotatably disposed in the same intermediate arm 12 as the movable side positioning guide 4.

In this embodiment, as described above, each of the bearings 22 at the front end of the intermediate arm 12 is constituted by one of the shaft insertion holes 220 and the bearing portions 221, 221 The bearings 21 and 23 of the proximal end side arm 11 and the distal end side arm 13 are formed to be substantially semi-cylindrical so as to be fitted between one of the intermediate arms 12 and the bearing portions 221 and 221, and in each of the bearings 21, The outer peripheral surface of the 23 is formed as a plurality of grooves 301 in the circumferential direction as the fixed side positioning guides 3, 3. Further, in this embodiment, the groove 301 is formed on the outer circumferential surface of each of the bearings 21, 23 at a scale of 10°. The bearings 21, 23 of the proximal end arm 11 and the distal end side arm 13 are fitted between the pair of bearing portions 221, 221 at the front and rear ends of the intermediate arm 12, and are inserted into the holes 210, 230 on the upper and lower sides. The washers 26, 26 are arranged coaxially. Further, on both sides of the pair of bearing portions 221, 221 at the rear end of the intermediate arm 12, washers 26, 26 and disc spring washers 27, 27 are arranged in this order coaxially with the shaft insertion holes 220, 220, and the shafts 212, 222 are inserted. The through holes 220, 220 and the shaft insertion holes 210, and the shaft insertion holes 220, 220 and the shaft insertion holes 230 are provided. In this manner, the bearings 21, 23 of the proximal end side arm 11 and the distal end side arm 13 are coupled to the pair of bearing portions 221, 221 of the front and rear ends of the intermediate arm 12 via the shafts 212, 222, and are disposed in the bearings 21, 23 The fixed side positioning guides 3, 3 are oppositely disposed at the rear end portion of the intermediate arm 12.

On the other hand, in the intermediate arm 12, as described above, the first end support portion 24 supporting the end side of one side of the movable side positioning guide 4 and the second end support supporting the end side of the opposite side are provided. Part 25. Further, one movable side positioning guide 4 is attached to each of the first end support portion 24 and the second end support portion 25, respectively. The movable-side positioning guide 4 is formed of an aluminum alloy and has a substantially rectangular plate shape having a horizontally long and uneven shape at the upper or lower portion.

The case where the guide 4 (4R) is positioned on the movable side at the rear is as shown in Fig. 5. As shown in Fig. 7, the locking projections 411 are formed slightly closer to the front end than the center of the upper surface 42, and the lower surface 42 is formed in a planar shape. In this embodiment, in the rear end surface 43 (the end surface opposite to the fixed side positioning guide 3), the claw 401 extending in the longitudinal direction of the groove 301 of the fixed side positioning guide 3 is formed to form 3 One. The front end surface 44 is formed in a planar shape. The left and right side faces 45, 45 are formed in a planar shape, and a notch 455 and a composite-shaped opening 450 are formed through the two side faces 45, 45. The notch 455 is formed in a substantially U-shape in the lateral direction from the distal end side to the substantially central portion, and the open end is provided on the distal end side, and the closed end is provided toward the vicinity of the center to form the protruding portion 456. A coil spring 53 is attached to the protruding portion 456. The opening 450 is formed in an elongated hole shape extending from the front end surface 44 side toward the rear end surface 43 side of the movable side positioning guide 4. Before the opening 450, a shaft insertion portion 451 for the shaft member 7 of the movable side positioning guide 4 is provided, and a pressing member insertion portion 452 for inserting the pressing member 51 is provided at the rear. . The pressing member insertion portion 452 has a pressed portion 453 pressed by the pressing member 51 and a locking portion 454 as a pressing portion 51 of the pressing member 51, and is formed in a locking groove 454 on the lower end side of the pressed portion 453. The pressed portion 453 receives the pressing force of the inserted pressing member 51, and presses the movable-side positioning guide 4 toward the fixed-side positioning guide 3. The pressing member 51 is fitted in the locking groove 454 pressing member 51 to restrict the fixing thereof.

The pressing member 51 is attached to the movable side positioning guide 4 together with the rod 6. The pressing member 51 is constituted by a roller 510. The rod 6 is integrally provided with a rod main body 61 and one of the rod base portions 62, 62 formed at the axial end side end portion of the rod main body 61. A pair of rod bases 62, 62 are collocated The method is formed on both sides of the opening 450 of the movable side positioning guide 4R, and each of the rod bases 62 has a shaft through hole 621 corresponding to the shaft insertion portion 451 and the pressing member insertion portion 452, and a pressing member through hole. 622. In this embodiment, the two rod substrates are joined to the rod body portion to form a rod 6 having an elongated rod body portion, and the upper portion is rectangular and the lower portion is laterally combined to form a size of two circles. The base portion 6 of the composite shape is formed. Further, between the pair of rod bases 62, 62, the operating pin 63 is inserted in the upper portion. In this manner, as shown in Fig. 6, the rod 6 is disposed on both sides of the opening 450 of the movable-side positioning guide 4R from above to arrange a pair of rod bases 62, 62, and between the pressing member through-holes 622, 622 The roller shaft 511 of the pressing member 51 is inserted through the pressing member insertion portion 452 of the movable-side positioning guide 4R, and the roller 510 of the pressing member 51 is attached, and the pressing member 51 is attached to the movable-side positioning guide 4R together with the lever 6. .

In the case of the movable side positioning guide 4F on the front side, as shown in Fig. 5, it has the same shape and structure as the movable side positioning guide 4R on the rear side, but the movable side positioning guide 4R is opposite to the rear side. Since it is mounted in the 180° reverse direction, the direction of each portion is opposite to the movable side positioning guide 4R at the rear. That is, the locking projections 411 are formed slightly closer to the rear end side than the center of the lower surface 41, and the upper surface 42 is formed in a planar shape. In this embodiment, the front end surface 43 (the end surface opposite to the end surface of the fixed side positioning guide 3) is a claw 401 which is engageable in the longitudinal direction of the groove 301 of the fixed side positioning guide 3 Form three. The rear end surface 44 is formed in a planar shape. The left and right side faces 45, 45 are formed in a planar shape, and a notch 455 and a composite-shaped opening 450 are formed between the two side faces 45, 45, and the two sides are penetrated 45, 45 are formed with a notch 455 and an opening 450. The notch 455 is formed in a substantially U-shape from the rear end side to the vicinity of the center, and has a rear end side with the open end and a closed end toward the center to form the protruding portion 456. A coil spring 53 is attached to the protruding portion 456. The opening 450 is formed in an elongated hole shape extending from the end face 44 side toward the front end face 43 side from the movable side positioning guide 4 . Immediately after the opening 450, a shaft insertion portion 451 for arranging the shaft member 7 of the movable side positioning guide 4 is provided, and a pressing member insertion portion 452 for inserting the pressing member 51 is provided at the front side. . The pressing member insertion portion 452 has a pressed portion 453 pressed by the pressing member 51 and a locking groove 454 formed as a locking portion 52 of the pressing member 51 on the upper end side of the pressed portion 453. The pressed portion 453 receives the pressing force of the inserted pressing member 51, and presses the movable-side positioning guide 4 toward the fixed-side positioning guide 3. The pressing member is embedded in the locking groove 454 to restrict the fixing thereof.

The pressing member 51 is attached to the movable side positioning guide 4 together with the rod 6. The pressing member 51 is constituted by a roller 510. The rod 6 is integrally provided with a rod main body 61 and one of the rod base portions 62, 62 formed at the axial end side end portion of the rod main body 61. The pair of rod bases 62, 62 are formed on both sides of the opening 450 of the movable side positioning guide 4F so as to be juxtaposed, and have a shaft passage corresponding to the shaft insertion portion 451 and the pressing member insertion portion 452. The hole 621 and the pressing member through hole 622. In this embodiment, the two rod substrates are overlapped with the rod body portion and fixed by screws to form the rod 6, which has an elongated rod body portion, and the upper portion is rectangular and the lower portion is laterally sized. a composite shaped rod base portion formed by combining two circles Minute. Further, between the pair of rod bases 62, 62, a driving pin 63 is inserted in the lower portion. In this manner, the rod 6 is a pair of rod base portions 62, 62 spanning from below and disposed on both sides of the opening 450 of the movable side positioning guide 4F, and passing between the pressing member through holes 622, 622 through the movable side positioning guide 4F The roller insertion portion 452 is inserted and inserted into the roller shaft 511 disposed to mount the roller 510 of the pressing member 51, and the pressing member 51 is attached to the movable side positioning guide 4F together with the lever 6.

In this manner, the movable side positioning guides 4R, 4F are each in the intermediate arm 12, have the first end of the claw 401 to be inserted through the frame 241 of the first end support portion 24, and the other side The two end portions are inserted through the insertion holes 250 of the second end support portion 25. The coil spring 53 attached to the projecting portion 456 formed on the second end side is compressed between the end portion of the notch 455 and the second end support portion 25, and each movable side positioning guide 4 is attached. The respective fixed side positioning guides 3 are pulled in the direction of separation. Further, at the same time as the mounting of the movable side positioning guides 4R, 4F, the rod body 61 of the rear rod 6 protrudes from the inside of the intermediate arm 12 through the upper slit 124 to the outside, and the front rod 6 The rod body 61 protrudes from the inside of the intermediate arm 12 through the lower slit 125 to the outside. Moreover, the shaft member 7 is inserted through the shaft insertion holes 126, 126 of the two side faces 123, 123 of the intermediate arm 12, the shaft through holes 621, 621 of the pair of rod base portions 62, 62, and the shaft member of the movable side positioning guide 4 The through portion 451, and the rod 6 is tiltably movable between the first end portion and the second end portion of the movable side positioning guide 4, and is axially supported by the intermediate arm 12. In this way, each of the rods 6 and the respective pressing members 51 are operatively coupled to the respective movable side positioning guides 4. When the rod 6 is tilted toward the fixed side positioning guide 3, In the pressing member insertion portion 452 of the movable side positioning guide 4, the pressing member 51 presses the pressing portion 453 to be fitted into the locking groove 454, and presses the movable side positioning guide 4 to the fixed side positioning guide 3 Fixed to maintain this state. On the other hand, when the lever 6 is tilted in the opposite direction, the actuating latch 63 of the lever 6 engages with the latching projection 411 of the movable side positioning guide 4, and the movable side positioning guide 4 is pulled back to be fixed. The side positioning guides 5 are separated.

As shown in FIGS. 4 and 5, the fixing base portion 14 is integrally formed of a steel plate into a substantially rectangular plate shape, and screw insertion holes 140 are provided at four corners of the respective screw holes 110 behind the corresponding proximal end side arm 11. And a plurality of screw insertion holes 141 for mounting the fixing base 14 in the vehicle interior are further provided around the periphery. The fixing base portion 14 is fixed to the screw holes 110 of the proximal end side arm 11 by inserting screws from the respective screw insertion holes 140, and is attached to the rear side of the proximal end side arm 11.

As shown in Fig. 3, the base plate 15 is a substantially rectangular flat plate having a predetermined size made of a steel material as a whole, and a concave portion 151 is formed in a convex shape toward the back side in the center of the front surface thereof, and a bolt insertion hole is formed. The 152 series runs through its center. Further, as shown in FIGS. 4 and 5, a bracket 16 is provided behind the base plate 15. The mounting bracket 16 is formed of a steel material as a section The glyphs are formed in the front face 161 to mount the mounting holes 160 of the base plate 15. The both side faces 162, 162 project from the left and right sides of the front face 161 toward the rear toward a substantially trapezoidal shape or a substantially triangular shape, and the shaft insertion holes 163, 163 are inserted through substantially the center of each of the projecting ends. The both side faces 162, 162 are arranged such that one of the front sides of the front end side arm 13 can be fitted to the bearing portions 131, 131 to form a pair of bearing portions 164, 164. In the front surface 161 of the mounting bracket 16, the base plate 15 is overlapped by interposing the gaskets coaxially with the mounting holes 160, and the mounting holes 160 are overlapped with the bolt insertion holes 152 of the base plate 15 On the base plate 15, the washer, the disc spring washer, the flat washer are arranged in this order coaxially with the bolt insertion hole 152, and the bolt 153 is passed through the holes 160, 152 from the front of the base plate 15, and the mounting bracket is The back side of the front face 161 of the 16 is screwed to the nut 154. In this manner, the base plate 15 is mounted on the front surface of the mounting bracket 16 in such a manner that the bolt 153 is rotated and rotatably held at an arbitrary rotational angle by the frictional resistance of the washer or the like. .

Moreover, the mounting bracket 16 of the base plate 15 is hingedly coupled to the front end side arm 13. In this embodiment, one pair of the front end side arms 13 are disposed between the bearing portions 164, 164, and the bearing portions 131, 131 are coupled to the respective shaft insertion holes 163, 163, 130, 130. In this state, a cylindrical spacer 165 is disposed between the shaft insertion holes 130 and 130 of the bearing portions 131 and 131, and the torsion coil spring 166 is wound around the spacer 165 in a predetermined direction. One of the locking ends of the torsion coil spring 166 is locked (fixed) on the back side of the front surface 161 of the mounting bracket 16, and the other locking end is locked (fixed) on the front end side. The front of the arm 13. Further, the washers 168 and 168 are disposed coaxially with the shaft insertion holes 130 and 130 on both sides of the bearing portions 131 and 131, and are coaxial with the shaft insertion hole 163 on one side of the bearing portions 164 and 164 of the mounting bracket 16. The flat washer 169 and the disc spring washer 170 are disposed in this order, and on the other side, the flat washer 169 is disposed coaxially with the shaft insertion hole 163. Insert the pin 171 from one side of the mounting bracket 16 and insert it through The shaft insertion holes 163, 163, 130, 130 and the spacer 165 are riveted between the bearing portions 164, 164 and the bearing portions 131, 131. In this manner, the bearing portions 164, 164 of the mounting bracket 16 and the bearing portions 131, 131 of the front end side arm 13 are fastened together by the washer 168, the flat washer 169, and the disc spring washer 170. Further, with the torsion coil spring 166, the mounting bracket 16 is biased upward and in the direction of rotation with respect to the front end side arm 13 by a predetermined spring force. When the base plate 15 is rotated in the vertical direction, frictional resistance between the bearing portions 164, 164 and the bearing portions 131, 131 is generated by the washer 168, the flat washer 169, and the disc spring washer 170, and the torsion coil spring 166 is utilized. The force of the potential energy is increased by the mounting bracket 16 rotating upward with respect to the front end side arm 13, and the mounting bracket 16 and the front end side arm 13 can be maintained at an arbitrary angle in the up and down direction, and can be adjusted and the base plate 15 can be adjusted. It is an arbitrary angle in the up and down direction.

Further, in this embodiment, in order to more securely fix one of the mounting brackets 16 to the arbitrary rotation angle between the bearing portions 164, 164 and one of the front end side arms 13 and the bearing portions 131, 131, it is also provided. Locking device 8.

As shown in FIGS. 1 and 4, the lock device 8 is formed by arranging a substantially arc shape around the shaft of the bearing portion (164 or 131) of either the mounting bracket 16 or the distal end side arm 13. a plurality of locking grooves (or locking holes) 81; formed around the shaft of the other bearing portion (131 or 164), movable relative to the rotation of the base plate 15 and opposite to the locking groove (or each locking hole) At least one guiding hole 82 on the 81; and the locking groove (or each locking hole) 81 is disposed on the guiding hole 82 so as to be retractable, and the elastic is utilized The spring means normalizes toward the locking groove (or each locking hole) 81 to push the locking pin 83; by the sliding operation of the locking pin 83, the locking pin 83 and the locking groove (or each locking hole) 81 are detachable Way composition.

In this embodiment, as described above, the lock groove 81 is a plurality of small lock grooves 81 formed in the bearing portion 131 of the distal end side arm 13 and arranged in a substantially arc shape along the arcuate edge portion (refer to 5), the guide hole 82 is formed in a pair of the bearing portion 164 of the mounting bracket 16, at a predetermined position on the front side of the corresponding locking groove 81, and is formed symmetrically with the shaft insertion hole 163 as a center of symmetry. Further, in this embodiment, the plurality of locking grooves 81 are formed on the bearing portion 131 of the front end side arm 13 at a scale of 10°, and the guide hole 82 is formed to correspond to any two portions of the plurality of locking grooves 81. The bearing portion 164 of the mounting bracket 16 is formed in this manner.

A pin case 85 is fixed to a side of the bearing portion 164 of one of the mounting brackets 16, and a pin case 831, 831 which is insertable through one of the two guiding holes 82 is disposed through the pin housing 85. The locking pin 83 is locked.

The latch housing 85 extends in a cylindrical shape opposite to the two guide holes 82 of the mounting bracket 16 and corresponds to each of the guide holes 82, and has a side opposite to the guide hole 82 than the guide hole 82. The large-diameter insertion hole insertion portion 851 has a plug insertion portion 852 having substantially the same diameter as the guide hole 82 at the other end. The latch housing 85 further includes a member that guides the pair of latch guides 850, 850 (see FIG. 2) toward the guide holes 82, 82, and the connection portion 853 between the latch guides 850 and 850 (see FIG. 2). And two guides that can be placed on the mounting bracket 16 with a pair of latch guides 850, 850 The manner of the hole 82 is formed in a flat shape at one end of the pin guides 850, 850, and has a fixing portion 854 of a screw insertion portion at both ends.

The locking pin 83 is constituted by a pair of pins 831, 831 and a handle 833 (refer to FIG. 3) which is inserted into a pair of latch guides 850, 850 of the pin housing 85; the handle 833 is spanned The pair of pins 831, 831 are attached between the proximal ends of the pins 831, 831 by screws or the like, and have a finger engaging portion for holding fingers. Each of the pins 831 is formed in a tapered cylindrical shape which is slightly smaller than the inner diameter of the locking groove 81 and the guide hole 82, and is longer than the length of the latch guide 850, and is slightly separated from the front end. There is a flange 832 that can be disposed in the pin insertion portion 851 of the large diameter of the latch guide 850.

The locking pin 83 is attached to the front end of each of the latches 831 and is locked to the flange 832 before the mounting handle 833 is attached. From the base end portion of each of the latches 831, the latching guides 850 are large. The plug insertion portion 851 of the diameter is inserted through the plug housing 85. Further, the handle 833 is attached to the base end portion of each of the latches 831 of each of the latch guides 850, and the lock pin 83 and the latch housing 85 are assembled. By this assembly, each of the latches 831 of the lock pin 83 is energized by the coil springs 84 disposed in the respective latch guides 850, and the distal end side protrudes from the distal end of each of the latch guides 850. In this manner, the locking pins 83 mounted in the latch housing 85 are inserted into the respective guide holes 82 of the mounting bracket 16, and the latch housing 85 is disposed on the bearing portion 164 of one of the mounting brackets 16, Further, the one bearing portion 164 is fixed by a screw that passes through the screw insertion portion of the fixing portion 854. In this way, the locking pin 83 is attached to the mounting bracket 16 The guide hole 82 of one of the bearing portions 164 is disposed so as to be movable forward and backward toward the lock groove 81, and is normally slidably engaged with the lock groove 81 by the force of the coil spring 84. The lock pin 83 is detached from each of the lock grooves 81 by sliding in the separating direction by the operation of the handle 833.

Further, in this embodiment, in order to securely hold the base plate 15 at the front surface 161 of the mounting bracket 16 at an arbitrary rotation angle, a screw-type stopper 9 is collectively disposed on the base plate 15. Back side.

As shown in FIGS. 2 and 5, the screw type brake 9 is attached to the front surface 161 of the mounting bracket 16 and around the bolt 153. At this time, a pair of screw holes 90, 90 and a pair of brake bodies 91 are provided. 91; the pair of screw holes 90, 90 are formed on both sides of the front face 161; the pair of brake bodies 91, 91 can be mounted on the screw holes 90, 90. Each of the brake bodies 91 has a screw shaft 911, a contact member 912, and a knob 913; the screw shaft 911 is screwed toward the back surface of the base plate 15 in such a manner as to be retractable in the screw hole 90; the contact member 912 It is fixed to the front end of the screw shaft 911 and is made of a material having a high friction coefficient in contact with the back surface of the base plate 15; the knob 913 is attached to the rear end of the screw shaft 911 so as to be integrally rotatable. A pair of brake bodies 91, 91 are attached to the front surface 161 of the mounting bracket 16 and are pressably inserted into the back surface of the base plate 15. In each of the brake main bodies 91, the knob 913 is rotated toward the feeding direction by the screw shaft 911 toward the back surface of the base plate 15, and the contact member 912 is pressed against the back surface of the base plate 15 to restrict the movement in the rotational direction. On the other hand, by rotating the knob 913 in the opposite direction, the contact member 912 It will leave from the back of the base plate 15 and allow it to rotate.

In the monitor arm 1 having such a configuration, the base end side arm 11 is fixed to the mounting portion of the instrument panel or the like in the vehicle interior by the fixed base portion 14, and the monitor is attached to the base plate 15 attached to the front end side arm 13, and The monitor is placed in the vehicle compartment in a movable (adjustable) manner over the length of the arms 11, 12, 13.

Further, the monitor arm 1 is fixed to the mounting portion by vertically moving the rods 6, 6 in the vertical direction (the vertical direction) so that the intermediate arm 12 is rotatable about the shaft 212 with respect to the proximal end side arm 11 In the direction (horizontal direction), the front end side arm 13 is rotatable in the left-right direction (horizontal direction) with respect to the intermediate arm 12 around the shaft 222, and the mounting bracket 16 of the base plate 15 is centered on the pin 171 with respect to the front end side arm 13. It is rotatable in the up and down direction (vertical direction), and the base plate 15 is rotatable about the bolt 153 on the front surface 161 of the mounting bracket 16. Further, when the monitor arm 1 is fixed to the mounting portion in the left-right direction (horizontal direction), the intermediate arm 12 can be rotated about the shaft 212 with respect to the proximal end side arm 11 as a center. In the direction (vertical direction), the front end side arm 13 is rotatable in the up and down direction (vertical direction) about the axis 222 with respect to the intermediate arm 12, and the mounting bracket 16 of the base plate 15 is centered on the pin 171 with respect to the front end side arm 13. Further, it is rotatable in the left-right direction (horizontal direction), and the base plate 15 is rotatable around the front surface 161 of the mounting bracket 16 with the bolt 153 as a center.

Then, when the position of the monitor is adjusted by the monitor arm 1, the positioning guides 3, 4 on the fixed side and the movable side are set to a non-engaged state, and the arms 11, 12, 13 are mutually rotated. In the left and right direction (horizontal direction) or The downward direction (vertical direction) is performed by adjusting to an arbitrary rotation angle.

Fig. 8 shows a state in which the intermediate arm 12 is rotated in the left-right direction (or the vertical direction) with respect to the proximal end side arm 11, and the angle of the left-right direction (or the vertical direction) of the entire arm 1 is adjusted. The intermediate arm 12 is coupled to the proximal end side arm 11 so as to be rotatable in the left-right direction (or the up-and-down direction) through the shaft 212. In a state where the movable side positioning guide 4 of the intermediate arm 12 is separated from the fixed side positioning guide 3 of the proximal end side arm 11, the intermediate arm 12 is rotated to the right or left with respect to the proximal end side arm 11. In the direction (or the up-and-down direction), the movable-side positioning guide 4 moves without touching the periphery of the plurality of grooves 301 of the fixed-side positioning guide 3 together with the operation of the intermediate arm 12. When the rotation of the intermediate arm 12 is stopped, at this position, the claw 401 of the movable-side positioning guide 4 faces the groove 301 of a portion of the fixed-side positioning guide 3. In this way, the intermediate arm 12 is rotated in an arbitrary direction with respect to the proximal end side arm 11 to set an arbitrary rotation angle.

In the ninth aspect, the front end side arm 13 is rotated in the left-right direction (or the up-and-down direction) with respect to the intermediate arm 12, and the angle of the left-right direction (or the up-and-down direction) of the base plate 15 is adjusted. The distal end side arm 13 is coupled to the intermediate arm 12 so as to be rotatable in the left-right direction (or the up-and-down direction) through the shaft 222. In a state in which the movable side positioning guide 4 of the intermediate arm 12 is separated from the fixed side positioning guide 3 of the front end side arm 13, the front end side arm 13 is rotated in the right direction or the left direction with respect to the intermediate arm 12 ( In the up-and-down direction, the fixed-side positioning guide 3 moves without touching the periphery of the claw 401 of the movable-side positioning guide 4 together with the movement of the front-end side arm 13. When the rotation of the front end side arm 13 is stopped, at this position, the claw of the movable side positioning guide 4 is The 401 is opposed to the groove 301 of a part of the fixed side positioning guide 3. In this way, the front end side arm 13 is rotated in an arbitrary direction with respect to the intermediate arm 12, and an arbitrary rotation angle is set.

Through the angle adjustment between the arms 11, 12, 13 , the arms 11 , 12 , 13 can extend from the fixed base 1 toward the front side in a straight shape, and can extend obliquely to the right or obliquely to the left (or up and down). It is straight or may extend straight to the right or left (or up and down) at right angles. Further, each of the arms 11, 12, and 13 can be bent into a zigzag shape or a Z shape from the fixed base portion 14 toward the front surface, and can be bent into a zigzag shape or a zigzag shape in an oblique right direction or a diagonally left direction (or an up and down direction). The teeth may be bent in a zigzag or Z shape at right angles to the right or left (or up and down), or the arms 11, 12, 13 may be folded over the fixed base 14.

In this manner, when the position of the base plate 15 (i.e., the position of the monitor) is determined, as shown in Figs. 8 and 9, the front and rear levers 6, 6 are rotated to a predetermined direction. And the movable side positioning guides 4, 4 are pressed toward the fixed side positioning guides 3, 3 by the pressing members 51, 51, and the pressing members 51, 51 are engaged with the locking portions 52, 52, and the arms 11, The 12 and 13 locks are at any angle of rotation.

As shown in Fig. 5, when the rear arm 6 is pressed rearward by the intermediate arm 12 and tilted, the pressing member 51 attached to the lower portion of the lever 6 is rotated rearward, and the rear movable side positioning guide 4R is The pressing portion 453 is pressed rearward, and the movable side positioning guide 4R is entirely pressed toward the fixed side positioning guide 3, and the claw 401 of the movable side positioning guide 4R and the groove 301 of a portion of the fixed side positioning guide 3 are strongly stuck. Hehe. Further, when the rod 6 is further strongly pressed, the pressing member 51 passes over the pressed portion 453 and the locking groove. The convex portion between the 454 is fitted to the locking groove 454, and is fixed by the restriction of the locking groove 454. In this way, the intermediate arm 12 is locked at an arbitrary angle of rotation with respect to the proximal end side arm 11. Further, in this embodiment, the plurality of grooves 301 are formed on the outer circumferential surface of the bearing 21 of the proximal end side arm 11 at a scale of 10°, so that the intermediate arm 12 can be angularly adjusted with respect to the proximal end side arm 11 by 10°. .

Similarly, when the front arm 6 of the intermediate arm 12 is pressed forward and tilted, the pressing member 51 attached to the upper portion of the lever 6 is rotated forward, and the pressed portion 453 of the front movable side positioning guide 4F is turned toward When the front side is pressed, the movable side positioning guide 4F is pressed and moved toward the fixed side positioning guide 3, and the claw 401 of the movable side positioning guide 4 and the groove 301 of one of the fixed side positioning guides 3 are strongly engaged. Further, when the rod 6 is further strongly pressed, the pressing member 51 is fitted over the locking groove 454 over the convex portion between the pressed portion 453 and the locking groove 454, and is fixed by the restriction of the locking groove 454. In this way, the front end side arm 13 is locked at an arbitrary rotation angle with respect to the intermediate arm 12. Further, in this embodiment, the plurality of grooves 301 are formed on the outer circumferential surface of the bearing 23 of the distal end side arm 13 at a scale of 10°, so that the distal end side arm 13 can be angularly adjusted with respect to the intermediate arm 12 by a scale of 10°.

Further, when the mounting bracket 16 of the base plate 15 of the monitor arm 1 is attached to the front end side arm 13 so as to be rotatable in the up and down direction, as shown in FIG. 4, by using the washer 168 and the flat washer 169. The disc spring washer 170 generates a frictional resistance between the bearing portions 164, 164 and the bearing portions 131, 131, and the bearing portion 164, 164 is formed by the torsion coil spring 166. With respect to the bearing portions 131 and 131, the resultant force of the force of the elastic force is rotated upward, and the mounting bracket 16 and the distal end side arm 13 are maintained at an arbitrary angle in the vertical direction. Therefore, the (front) direction of the base plate 15 can be adjusted to the up and down direction. Any angle and keep it at any angle.

Further, as shown in Fig. 10, since the monitor arm 1 is provided with the lock device 8 at the same time, the rotation angle of the base plate 15 can be more reliably fixed. At this time, as shown in FIGS. 10 and 11, the handle 833 of the lock device 8 is pulled, and the rotation of the base plate 15 is adjusted in a state where the pair of pins 831 are separated from the locking grooves 81, 81 of the two portions. At the angle, when the handle 833 is released, the pair of pins 831 are inserted into the locking grooves 81, 81 of the two positions at the positions corresponding to the rotation angle, and by the engagement, the movement of the base plate 15 in the direction of rotation is restricted. To fix the rotation angle. Further, in this embodiment, a plurality of locking grooves 81 are formed on the bearing portion 131 of one of the front end side arms 13 at a scale of 10°, so that the base plate 15 can be angularly adjusted at a scale of 10°.

Further, as shown in FIG. 11, in the monitor arm 1, the base plate 15 is rotatable about the bolt 153 on the front surface of the mounting bracket 16, as shown in Fig. 10, the base plate 15 can be The rotation angle is fixed and held by two screw-type brakes 9 provided on the back side of the base plate 15. At this time, with respect to each of the brake main bodies 91, the knob 913 is rotated toward the feeding direction by causing the screw shaft 911 toward the back surface of the base plate 15, so that the contact member 912 is pressed into contact with the back surface of the base plate 15 to restrict the rotational direction thereof. The action, on the other hand, by rotating the handle 913 in the opposite direction, the contact member 912 will move away from the base plate 15 and allow it to rotate. So, loosen When the base plate 15 is arbitrarily rotated in the state of each of the brakes 9, when the rotation angle is determined, the rotation angle is fixed as long as the brakes 9 are locked.

In this way, the monitor uses the monitor arm 1 to stably maintain the position desired by the user for a long time. Further, when changing the installation position of the monitor, the tilting movement of each of the levers 6 is performed in the opposite direction to the predetermined direction, and the engagement of the pressing member 51 with the locking portion 52 is released, and the coil spring 53 is utilized. The role of the lock between the arms 11, 12, 13 will be automatically released. Then, the arms 11, 12, 13 are mutually rotated in the left-right direction (or the up-and-down direction) through the positioning guides 3, 4 on the fixed side and the movable side, and after being adjusted to an arbitrary rotation angle, the rods 6 are respectively The tilting operation is performed to a predetermined direction, whereby the arms 11, 12, and 13 can be locked to an arbitrary rotation angle. The direction and the rotation angle of the base plate 15 can be appropriately released by the lock device 8 and the brake 9, and the adjustment can be appropriately performed. Thereafter, the base plate 15 can be similarly fixed by the lock device 8 and the brake 9. can.

As described above, according to the monitor arm 1, each of the arms 11, 12, 13 can be adjusted to an arbitrary angle and firmly fixed. In particular, in a vehicle that is susceptible to vibration, the monitor can be stably held for a predetermined period of time at a predetermined position requested by the user. Further, since the locking between the arms 11, 12, and 13 can be automatically released by the turning operation of the lever 6, the angle between the arms 11, 12, and 13 can be easily changed and adjusted.

Furthermore, in this monitor arm 1, the following effects are received.

(1) The bearing 22 of the intermediate arm 12 is constituted by one of the shaft insertion holes 220, 220 and the bearing portions 221, 221, and the base end side arm 11 and the front end side arm 13 The bearings 21, 23 are respectively fitted between the pair of bearing portions 221, 221 of the intermediate arm 12, and are formed on the shaft core by a substantially semi-cylindrical bearing having the shaft insertion holes 210, 230. The bearings 21, 23 are such that the shaft insertion hole 210 and the shaft insertion holes 220, 220, and the shaft insertion hole 230 and the shaft insertion holes 220, 220 have the same axis, and are embedded in the pair of bearing portions 221, 221, and 221, 221, and the shaft 212, 222 is inserted through the shaft insertion holes 220, 220 and the shaft insertion hole 210, and the shaft insertion holes 220, 220 and the shaft insertion hole 230, and is inserted between the bearings 22, 21, and 22, 23. The fixed side positioning guides 3, 3 are formed on the outer circumferential surfaces of the bearings 21, 23 of the proximal end side arm 11 and the front end side arm 13, respectively. Therefore, the fixed side positioning guides 3, 3 can be easily assembled with the connection of the arms 11, 12, 13 on the proximal end side, the intermediate side, and the front end side.

(2) Each of the rear side and the front side of the intermediate arm 12 is provided with a first end support portion 24 having a first end side having a claw 401 for supporting the movable side positioning guide 4, and for supporting the opposite side thereof The second end support portion 25 on the second end side is provided with front and rear movable side positioning guides 4, 4 in the intermediate arm 12. In contrast, each of the movable side positioning guides 4 is inserted into the frame 241 of the first end support portion 24 at the first end portion, and the second end portion is inserted into the insertion hole 250 supported by the second end support portion 25, Further, the coil spring 53 that can move the movable side positioning guide 4 from the first end support portion 24 side toward the second end support portion 25 side is interposed between the second end portion side and the second end support portion 25. By the coil spring 53, the movable side positioning guide 4 is normally given potential energy from the fixed side positioning guide 3 in the direction of separation. Therefore, the movable side positioning guides 4, 4 can be easily assembled into the intermediate arm 12, and the normality of each of the movable side positioning guides 4 can be made from the fixed side positioning guide 3 to the direction of separation. Field bombing.

(3) Each of the movable-side positioning guides 4 has a substantially rectangular plate shape, and a composite-shaped opening 450 is formed between the two side faces 45, 45, and the opening 450 is formed to be positioned from the second end of the movable-side positioning guide 4 a portion having a long hole shape extending toward the first end side, and on the second end side of the elongated hole shape, a shaft insertion portion for arranging the shaft member 7 of the movable side positioning guide 4 451, and on the first end side, a pressing member insertion portion 452 through which the pressing member 51 is inserted is provided. The pressing member insertion portion 452 has a pressed portion 453 pressed by the pressing member 51 and a locking groove 454 formed as a locking portion 52 of the pressing member 51 on the terminal side of the pressed portion 453. The pressed portion 453 receives the pressing force of the inserted pressing member 51, and presses the movable-side positioning guide 4 toward the fixed-side positioning guide 3. The pressing member 51 is fitted in the locking groove 454 to restrict the fixing thereof. On the other hand, each of the rods 6 is provided with a rod main body 61 and one of the rod base portions 62, 62 formed at the axial end side end portion of the rod main body 61, and the pair of rod base portions 62, 62 are formed in a side by side arrangement The movable side positions both sides of the opening 450 of the guide 4. Each of the lever base portions 62 has a shaft through hole 621 and a pressing member through hole 622 corresponding to the shaft insertion portion 451 and the pressing member insertion portion 452. Between the pressing member through holes 622, 622, the pressing member insertion portion 452 of the movable side positioning guide 4 is inserted into the roller shaft 511, and the pressing member 51 composed of the roller 510 is attached. The movable side positioning guide 4 and the rod 6 are disposed between the two sides 123, 123 of the intermediate arm 12, and the rod body 6 protrudes from the inside of the intermediate arm 12 to the outside, and the shaft members 7, 7 disposed between the two sides 123, 123 of the intermediate arm 12. , the shaft through holes 621, 621 and the movable side positioning guides inserted into the bases 62, 62 of the rod The shaft insertion portion 451 of 4. The rod 6 is disposed to be tiltably movable between the second end portion of the movable side positioning guide 4 and the first end portion, and the pressing member of the movable side positioning guide 4 is inserted by the tilting movement of the rod 6 In the through portion 452, the pressing member 51 is disposed so as to be pressable by the pressing portion 453 and can be fitted to the locking groove 454, and the movable side positioning guide 4 can be crimped and fixed by the pressing of the pressing member 51. The side positioning guide 3 is disposed in the intermediate arm 12. Therefore, by simply connecting the movable side positioning guide 4 to the lever 6 and the operation of the lever 6, the movable side positioning guide 4 can be simply and surely pressed toward the fixed side positioning guide 3, and can be surely Fixed in its pressed position.

(4) The base plate 15 and the front end side arm 13 are provided on one of the bearing portions 164, 164 provided on the back side of the base plate 15, the bearing portions 131, 131 provided in the front end side arm 13, and the bearing portions The pins 171 of 164, 164, 131, and 131 are attached to the front end side arm 13 so as to be rotatable in a direction orthogonal to the direction of rotation between the arms 11, 12, and 13. The angle of rotation of the base plate 15 with respect to the front end side arm 13 is fixedly held by the locking device 8. The locking device 8 has a plurality of locking grooves 81 (or locking holes), two guiding holes 82, and locking pins 83; the plurality of locking grooves 81 are formed on one of the pair of base plates 15 or the front end side arms 13 Around the shaft of one of the pair of bearing portions 131, 131, in this case, one of the pair of distal end side arms 13 is arranged in a substantially arc shape with respect to the bearing portions 131, 131; and the two guiding holes 82 are formed on the other side. Around the shaft, at this time, is formed on one of the pair of bearing portions 164, 164 of the base plate 15, and together with the rotation of the base plate 15 to be relatively movable and relatively opposite to the locking groove 81 (or each lock At least one of the fixed holes) is two at this time; the locking pin 83 is disposed on each of the guiding holes 82 so as to be movable forward and backward toward the locking groove 81 (or each locking hole), and is normalized by a spring means. The potential is applied by pressing against the locking groove 81 (or each locking hole). Through the sliding operation of the locking pin 83, the locking pin 83 and the locking groove 81 (or each locking hole) are engageable and disengageable. Therefore, by the wedge effect of the locking pin 83 of the locking device 8, the arbitrary rotation angle between the mounting bracket 16 of the base plate 15 and the front end side arm 13 can be completely fixed, thereby making the base The seat plate 15 is fixed at an arbitrary angle toward the vertical direction.

(5) The base plate 15 is formed in a substantially planar shape, and is rotatably attached to the front surface 161 of the mounting bracket 16 on the back side through a bolt 153 inserted substantially at the center thereof. Around the bolt 153 of the mounting bracket 16, the rotation angle of the base plate 15 is fixed and held by a screw-type brake 9 that is press-fitted to the back surface of the base plate 15. Therefore, the base plate 15 can be adjusted to an arbitrary rotation angle to be surely fixed.

Further, in this embodiment, in the hinge device 2, the groove 301 is provided on the outer peripheral surface of the substantially semi-cylindrical bearing as the fixed-side positioning guide 3, and the claw is provided at the end of the movable-side positioning guide 4 401, but instead, a hole may be provided in the outer peripheral surface of the substantially semi-cylindrical bearing as the fixed-side positioning guide 3, and a protrusion engageable in the hole may be provided at the end of the movable-side positioning guide 4, even if In this manner, the same operational effects as those of the above embodiment can be obtained. Further, in the hinge device 2, in order to fix the pressing state of the pressing member 51 with respect to the movable-side positioning guide 4, the movable-side positioning guide 4 is provided with a locking groove that can fit/restrict the pressing member 51. 454, but such a locking shape portion may be formed on the side of the intermediate arm 12. Further, in order to fix the pressing state of the pressing member 51 with respect to the movable side positioning guide 4, a part of the engaging lever 6 and a lockable locking portion may be provided on the movable side positioning guide 4 or the intermediate arm 12. Even in this manner, the same operational effects as those of the above embodiment can be obtained.

Further, in this embodiment, the base support arm 11, the intermediate arm 12, and the distal end side arm 13 constitute the device support arm 1, but may be constituted by two arms of the proximal end arm and the distal end side arm, or The intermediate arm can also be formed by a plurality of arms. Even in this case, by connecting the arms between the arms by the hinge device 2, the same operational effects as those of the above-described embodiment can be obtained.

Further, in this embodiment, in order to arrange the bearing portions 131, 131 of the front end side arms 13 between the bearing portions 164 and 164, one of the mounting brackets 16, and the locking device 8 is provided, and the bearing portions of the front end side arms 13 are provided. A plurality of locking grooves 81 are formed in a substantially arc shape at the edge of the 131, and a guide hole 82 is formed at a predetermined position of the edge portion of the bearing portion 131 on the side surface of each of the bearing portions 164 of the mounting bracket 16. In other embodiments, the bearing portions 164, 164 of the mounting bracket 16 may be disposed between the pair of bearing portions 131, 131 of the front end side arm 13, and in this case, the bearing portions 164 of the mounting bracket 16 may also be used. The edge portion is formed in a plurality of locking grooves in a substantially arc shape, and the guide holes are formed at predetermined positions on the edge portions of the respective bearing portions 164 on both side faces of the bearing portions 131 of the distal end side arms 13. Furthermore, a plurality of holes 81 may be replaced by a plurality of holes. Even in this manner, the same operational effects as those of the above embodiment can be obtained.

Further, in this embodiment, the machine support arm 1 is particularly exemplified. It is a monitor arm for installing a monitor in a vehicle interior such as a passenger car or a truck. However, when the machine support arm 1 is installed in an office or a home, in addition to a monitor, various devices such as a personal computer and a television are installed. In addition to the vehicle or the like, the vehicle can be used in the same manner as the vehicle or the like, and the same operational effects as those of the above embodiment can be obtained.

1‧‧‧Monitor arm (machine support arm)

2‧‧‧Hinge device

3‧‧‧Fixed side positioning guide

4‧‧‧ movable side positioning guide

4F‧‧‧ movable side positioning guide in front

4R‧‧‧ movable side positioning guide

6‧‧‧ pole

7‧‧‧ shaft parts

8‧‧‧Locking device

9‧‧‧screw type brake

11‧‧‧Based side arm

12‧‧‧ middle arm

13‧‧‧ front side arm

14‧‧‧Fixed base plate

15‧‧‧Base plate (base)

16‧‧‧Installation bracket

21, 22, 23‧ ‧ bearings

24‧‧‧First end support

25‧‧‧second end support

26, 168‧‧‧ washers

27‧‧‧ disc spring washer

41‧‧‧ above (below)

42‧‧‧ below (above)

43‧‧‧ rear end face (front end face)

44‧‧‧ front end face (rear end face)

45, 123, 162‧‧‧ side

51‧‧‧ Pressing members

52‧‧‧Locking Department

53‧‧‧ coil spring

61‧‧‧ rod body

62‧‧‧ pole base

63‧‧‧ actuation latch

81‧‧‧Locking groove (or locking hole)

82‧‧‧ Guide hole

83‧‧‧Lock pin

84‧‧‧ coil spring

85‧‧‧ Pin housing

90, 110‧‧‧ screw holes

91‧‧‧ brake body

121‧‧‧above

122‧‧‧ below

124, 125‧‧‧ slit

126‧‧‧Axis insert hole

127‧‧‧ clamp

130, 163, 220‧‧‧ shaft insertion holes

131‧‧‧Flat-shaped flat plate (bearing part)

140, 141‧‧‧ screw insertion holes

151‧‧‧ recess

152‧‧‧Bolt insertion hole

153‧‧‧Bolts (shafts)

154‧‧‧ nuts

160‧‧‧Mounting holes

161‧‧‧ front

164, 221‧ ‧ bearing department

165‧‧‧ spacers

166‧‧‧Torque coil spring

169‧‧‧ flat washer

170‧‧‧ disc spring washer

171‧‧‧Latch (axis)

210, 230‧‧‧ shaft insertion hole

212, 222‧‧‧ axis

241‧‧‧Frame

250‧‧‧ inserted through hole

301‧‧‧ditch

401‧‧‧ claws

411‧‧‧Snap protrusion

450‧‧‧ openings

451‧‧‧Shaft fittings

452‧‧‧ Pressing member insertion

453‧‧‧The pressed part

454‧‧‧Lock groove

455‧‧ ‧ gap

456‧‧‧ burr

510‧‧‧Roller

511‧‧‧Roller shaft

621‧‧‧Axis through hole

622‧‧‧ Pressing member through hole

831‧‧‧ latch

832‧‧‧Flange

833‧‧‧Handle

850‧‧‧Latch Guide

851, 852 ‧ ‧ bolt insertion department

853‧‧‧Connecting Department

854‧‧‧ Fixed Department

911‧‧‧ screw shaft

912‧‧‧Contact members

913‧‧‧ knob

Fig. 1 is a plan view showing a machine support arm according to an embodiment of the present invention.

Figure 2 is a left side view of the machine support arm of Figure 1.

Figure 3 is a front view of the machine support arm of Figure 1.

Fig. 4 is a cross-sectional view seen from the bottom side of the machine support arm of Fig. 1.

Figure 5 is a cross-sectional view from the right side of the machine support arm of Figure 1.

Fig. 6 is a cross-sectional view, particularly from the machine support arm of Fig. 1, viewed from the front side of the intermediate arm section.

Fig. 7 is a perspective view showing a movable side positioning guide, a lever, a pressing member, a locking portion, and the like of the machine support arm of Fig. 1.

Fig. 8 is a view showing a state in which the operation of the machine support arm of Fig. 1 is performed, and the intermediate arm is rotated in the left-right direction or the vertical direction with respect to the proximal end side arm to adjust the angle of the left-right direction or the vertical direction of the entire arm. .

Fig. 9 is a view showing a state in which the operation of the machine support arm of Fig. 1 is performed, and the front end side arm is rotated in the left-right direction or the vertical direction with respect to the intermediate arm to adjust the angle of the left and right direction or the vertical direction of the base plate.

Fig. 10 is a view showing the operation of the machine support arm of Fig. 1, and the mounting bracket on the back surface of the base plate is rotated in the up-down direction or the left-right direction with respect to the front end side arm to adjust the angle of the up-down direction or the left-right direction of the base plate. State of the map.

Fig. 11 is a view showing a state in which the operation of the machine support arm of Fig. 1 is performed, and the rotation angle of the base plate is adjusted with respect to the mounting bracket on the back surface of the base plate to rotate the base plate around the circumference of the shaft.

1‧‧‧Monitor arm (machine support arm)

2‧‧‧Hinge device

4‧‧‧ movable side positioning guide

4F‧‧‧ movable side positioning guide in front

4R‧‧‧ movable side positioning guide

6‧‧‧ pole

7‧‧‧ shaft parts

9‧‧‧ screw-type brake

11‧‧‧Based side arm

12‧‧‧ middle arm

13‧‧‧ front side arm

14‧‧‧Fixed base plate

15‧‧‧Base plate (base)

16‧‧‧Installation bracket

21, 22, 23‧ ‧ bearings

24‧‧‧First end support

25‧‧‧second end support

26‧‧‧Washers

27‧‧‧ disc spring washer

41‧‧‧ above (below)

42‧‧‧ below (above)

43‧‧‧ rear end face (front end face)

44‧‧‧ front end face (rear end face)

45‧‧‧ side

51‧‧‧ Pressing members

52‧‧‧Locking Department

53‧‧‧ coil spring

61‧‧‧ rod body

62‧‧‧ pole base

63‧‧‧ actuation latch

81‧‧‧Locking groove (or locking hole)

90, 110‧‧‧ screw holes

91‧‧‧ brake body

126‧‧‧Axis insert hole

131‧‧‧Flat-shaped flat plate (bearing part)

140‧‧‧screw hole

151‧‧‧ recess

152‧‧‧Bolt insertion hole

153‧‧‧Bolts (shafts)

161‧‧‧ front

164, 221‧ ‧ bearing department

165‧‧‧ spacers

166‧‧‧Torque coil spring

171‧‧‧Latch (axis)

210, 230‧‧‧ shaft insertion hole

212, 222‧‧‧ axis

220‧‧‧Axis insert through hole

241‧‧‧Frame

250‧‧‧ inserted through hole

401‧‧‧ claws

411‧‧‧Snap protrusion

450‧‧‧ openings

451‧‧‧Shaft fittings

452‧‧‧ Pressing member insertion

453‧‧‧The pressed part

454‧‧‧Lock groove

455‧‧ ‧ gap

456‧‧‧ burr

911‧‧‧ screw shaft

912‧‧‧Contact members

913‧‧‧ knob

Claims (7)

A machine support arm having a plurality of arms, and the adjacent arms are coupled to each other by a hinge device so as to be rotatable and adjacent to each other, and the arms can be maintained at an arbitrary rotation angle, and the plurality of arms are at the base end side. The arm is fixed at the mounting portion, and the various machines are mounted on the arm on the front end side, and the various machines are movably disposed at the mounting position within the range of the length of each of the arms, and the hinge device is provided to be formed in the abutting a substantially cylindrical bearing at a connecting end of one of the arms, and a bearing formed at a connecting end of the other arm and coupled to the substantially cylindrical bearing in a relatively rotatable manner; the shaft is inserted The fixed bearing positioning guide is disposed on the outer circumferential surface of the substantially cylindrical bearing, and includes a plurality of grooves or holes formed in the circumferential direction; the movable side positioning guide is opposite to the bearing The fixed-side positioning guide is disposed in a forward-retractable manner, and is disposed on the other arm, and is configured to be normally positioned from the fixed side by a spring means. Separating, and at a first end opposite to the fixed side positioning guide, having a claw or a protrusion engageable with the groove or the hole; the rod having a pressing member for moving the movable side positioning guide toward The fixed side positioning guide is pressed; and the locking portion is provided on the movable side positioning guide or the other arm, and in a state where the movable side positioning guide is pressed against the fixed side positioning guide, Pressing member or other of the aforementioned rods a part of the engagement to restrict the movement of the rod, and the positioning guides on the fixed side and the movable side are in a non-engaged state, and the arms are rotated in the left-right direction or the up-and-down direction to each other to move the arm Adjusted to an arbitrary rotation angle, and by rotating the aforementioned lever to a predetermined direction, and pressing the movable side positioning guide toward the fixed side positioning guide by the pressing member, and the pressing member or the aforementioned The other part of the rod is fitted to the locking portion, and the arm is locked at an arbitrary rotation angle, and the pressing member is rotated in a direction opposite to the predetermined direction to press the pressing member. Or the other part of the rod is engaged with the locking portion to release the lock between the arms. The machine support arm according to claim 1, wherein the bearing formed at the connecting end of the other arm is formed by a bearing portion having one of the shaft insertion holes in the shaft core, and the aforementioned substantially barrel The bearing is formed by a substantially semi-cylindrical bearing that can be fitted between the pair of bearing portions and has a shaft insertion hole on the axial core thereof, and the substantially semi-cylindrical bearing is attached to the pair of bearings. The shaft insertion hole is fitted to the shaft core of the shaft insertion hole, and the shaft is inserted through the shaft insertion hole and the shaft insertion hole. The machine support arm according to claim 1 or 2, wherein the first end support portion of the first end side having the claw or the protrusion for supporting the movable side positioning guide is used for Supporting the opposite side The second end support portion on the second end side is disposed in the other arm, and the first end of the movable side positioning guide is supported by the first end support portion, the second end The second end support portion is supported by the second end support portion, and a coil spring is interposed between the second end portion side and the second end support portion, and the coil spring is configured to move the movable side positioning guide from the foregoing The one end support portion side is pulled toward the second end support portion side; and by the coil spring, the movable side positioning guide is normally given a potential energy in a direction in which the fixed side positioning guide is separated. The machine support arm according to claim 3, wherein the movable side positioning guide has a substantially rectangular plate shape, and a composite shape opening is formed between the two side surfaces, and the opening is formed to be positioned from the movable side. a second end portion of the guide member has a long hole shape extending toward the first end portion side, and on the second end portion side of the long hole shape, an axis for pivoting the shaft member of the movable side positioning guide is provided a member insertion portion, wherein a pressing member insertion portion through which the pressing member is inserted is provided on the first end portion side, and the pressing member insertion portion has a pressed portion pressed by the pressing member, and the pressed portion a locking groove as a locking portion of the pressing member is formed on the terminal side of the pressing portion, and the pressed portion receives a pressing force of the inserted pressing member, and the movable-side positioning guide is pressed and moved toward the fixed-side positioning guide. The locking groove is fitted with the pressing member to restrict the circumference thereof, and the rod includes a rod body and a pair of rod base portions formed at a shaft-side end portion of the rod body, and the pair of rod base portions are detachable The column arrangement is formed on both sides of the aforementioned opening of the movable side positioning guide, and each rod base has a shaft through hole and a pressing member through hole corresponding to the shaft insertion portion and the pressing member insertion portion are inserted through the pressing member insertion portion of the movable side positioning guide between the pressing member through holes. The roller shaft is provided with the pressing member composed of a roller, and the movable side positioning guide and the rod are disposed between both side faces of the other arm, and the rod body protrudes from the inside of the other arm to a shaft member disposed outside the other side of the arm and inserted into the shaft through hole of the rod base and the shaft insertion portion of the movable side positioning guide, the rod is tiltable And moving between the second end portion of the movable side positioning guide and the first end portion, and in the pressing member insertion portion of the movable side positioning guide by the tilting movement of the rod, the pressing The member is disposed such that the pressed portion can be pressed and fitted to the locking groove, and the movable side positioning guide can be pressed against the fixed side positioning guide by the pressing of the pressing member. The machine support arm of claim 1, wherein the plurality of arms comprise a base end arm, an intermediate arm and a front end side arm, and the base end side arm is provided for integrally supporting and fixing the machine support arm At the fixed base of the mounting portion, the front end side arm is provided with a base for mounting various machines. The machine support arm according to claim 5, wherein the base and the front end side arm are supported by a bearing provided on a back side of the base, a bearing provided at the front end side arm, and a shaft between the bearings, such that the base is rotatable relative to the arm The front end side arm is attached to the front end side arm, and the rotation angle of the base relative to the front end side arm is fixedly held by a locking device having: the base or the front end side arm a plurality of locking grooves or locking holes formed in a substantially arc shape around the shaft of one of the bearings; formed around the shaft of the other bearing portion, and relatively movable together with the rotation of the base and relatively opposite to the foregoing At least one guiding hole on the locking groove or the locking hole; and being disposed on the guiding hole so as to be retractable toward the locking groove or the locking hole, and normalizing toward the locking groove or the locking hole by a spring means The locking latch is pushed, and the locking latch is engaged with the locking groove or the locking hole by the sliding operation of the locking pin. The machine support arm according to claim 5, wherein the base is formed in a substantially planar shape, and is rotatably attached to the bearing on the back side by being inserted through a shaft substantially at the center thereof. Further, around the shaft of the bearing on the back side, a screw type brake that is inserted so as to be pressed against the back surface of the base is used to fix and maintain the rotation angle of the base.