JP2019019970A - Terminal device automatic opening / closing device and terminal device using the opening / closing device - Google Patents

Abstract

An object of the present invention is to prevent a terminal device from falling over on a mounting surface by using a configuration different from that of the related art. An automatic opening / closing device for a stand member for stably holding an open state of a terminal device in which a first housing and a second housing are relatively openably connected. A first housing attachment member 5 attached to one housing 2 side, a second housing attachment member 6 attached to the second housing 3 side, the first housing attachment member 5 and the second housing A hinge shaft 8 for connecting the mounting member 6 and the stand member 7 so as to be relatively rotatable, and moving the stand member 7 from a predetermined opening angle of the second housing 3 with respect to the first housing 2 to an operating posture. And a stand member rotation control means 9 for automatically opening. [Selection diagram] Fig. 4

Description

  The present invention relates to a terminal device having a first casing and a second casing that are connected to each other so as to be able to be opened and closed, such as a notebook personal computer, a laptop personal computer, and a PDA (Personal Digital Assistant). A stand automatic opening / closing device for a terminal device that automatically opens and closes a stand member for stably holding the terminal device on a mounting surface such as a desk in a state where the second housing is opened with respect to the housing, and this opening / closing The present invention relates to a terminal device using the apparatus.

  The above-described terminal device generally has a first casing that constitutes the apparatus main body provided with a numeric keypad and a keyboard and a second casing that also serves as a lid provided with a display device, in a state where they overlap each other. It is connected using an opening / closing device so that it can be opened / closed relatively in the direction. Many of such opening / closing devices include a mechanism such as a friction mechanism for stopping and holding the second housing at an arbitrary opening angle with respect to the first housing.

  When the terminal device as described above is placed on a mounting surface such as a desk and used, when the second housing is opened to a large extent with respect to the first housing, the entire terminal device is surpassed. May fall backwards. In addition, when the touch input is too strong when touch input is performed on the screen of the opened second casing, the entire terminal device may fall backward.

  In order to solve such a problem, in a device including a tiltable casing that can be tilted with respect to a main body placed on a horizontal plane, the main body is utilized by rotating the rotation shaft when the tiltable casing is rotated. Has been proposed (see Patent Document 1).

  This overturn prevention device is a device having a tiltable casing that can be tilted by a first rotation shaft built in the main body with respect to a horizontal installation, and in a direction perpendicular to the main body in the main body A second rotational shaft, and a rotational force transmission between the first rotational shaft and the second rotational shaft for transmitting the rotation of the first rotational shaft to the second rotational shaft for rotation. A fall prevention member that protrudes from the main body in the tilt direction of the tiltable housing when the second rotation shaft is rotated by the tilting operation of the tiltable housing; Is provided. And according to this conventional fall prevention device, it is supposed that a fall prevention mechanism can be reduced in size.

Japanese Patent Laying-Open No. 2015-204044

  However, the conventional overturn prevention device is provided with a second rotating shaft in a direction perpendicular to the main body in addition to the first rotating shaft serving as the center of tilt, and the rotational force is transmitted between these rotating shafts. Since the mechanism is provided, there is a limit to downsizing the fall prevention mechanism.

  The present invention employs a configuration different from that of the conventional technique, so that a stand member for stably holding the terminal device at a predetermined opening angle on the mounting surface is provided on the second housing with respect to the first housing. An object of the present invention is to provide a stand automatic opening / closing device for a terminal device that is automatically opened to an action posture in accordance with the opening operation, and a terminal device using the opening / closing device.

  Another object of the present invention is to provide an automatic stand opening / closing device for a terminal device and a terminal device using the opening / closing device that can contribute to further miniaturization.

  In order to solve the above-mentioned problems, an automatic stand opening / closing device for a terminal device according to the present invention includes a first casing and a second casing that are relatively openable and closable and can be stopped and held at an arbitrary opening angle. Furthermore, in a terminal device having a stand member for stably holding the second housing in the opened state with respect to the first housing, the stand member is attached to the first housing with respect to the first housing. In order to automatically open from the predetermined opening angle to the action posture, the first housing attachment member attached to the first housing side, the second housing attachment member attached to the second housing side, and the first A housing shaft, a hinge shaft that couples the second housing mounting member and the stand member so as to be relatively rotatable, and the stand member from a predetermined opening angle of the second housing with respect to the first housing To the action posture A stand member rotation control means for dynamically opened, characterized in that it comprises a (claim 1).

  According to the present invention, when the opening of the second casing exceeds the predetermined opening angle, the stand member is automatically opened to the action posture by the action of the stand member rotation control means, and the terminal device is provided with the stand member. Is stably held on the mounting surface. Therefore, the terminal device does not fall backward. Since the stand member automatically opens due to the opening operation of the second housing, the operability is also good.

  Further, the present invention is characterized in that the stand member rotation control means is disposed on the axis of the hinge shaft (claim 2). For this reason, it can contribute to size reduction of an automatic stand opening / closing device.

  Further, the present invention comprises a configuration in which the stand member is opened by being pushed by the second casing that is opened, and the stand member rotation control means is a rotation cam that always rotates integrally with the stand member; A slide cam that engages with the rotary cam; and an elastic means that constantly biases the slide cam toward the rotary cam, and the second casing is configured by an interaction between the rotary cam and the slide cam. When the angle exceeds the predetermined opening angle, the rotary cam is rotationally driven to an angular position corresponding to the action posture of the stand member by sliding the slide cam in a direction approaching the rotary cam. (Claim 3).

  According to the above configuration, the stand member is also opened by being pushed by the second casing by the opening operation of the second casing until the second casing reaches the predetermined opening angle. And if a 2nd housing | casing exceeds a predetermined opening angle, a slide cam will be slid to the direction approaching a rotation cam by the effect | action of an elastic means. By this slide of the slide cam, the rotary cam is rotationally driven to an angular position corresponding to the action posture of the stand member. This rotation of the rotating cam opens the stand member to the working position.

  In the present invention, the rotating cam and the slide cam are inserted by the hinge shaft in the hinge shaft insertion portion of the first housing mounting member, and the slide cam and the rotating cam are free from rotation of the hinge shaft. The slide cam is slidable along the hinge shaft and is non-rotatably engaged with the hinge shaft insertion portion of the first housing mounting member. 4).

  Further, according to the present invention, the stand member rotation control means automatically causes the stand member to move from a predetermined closing angle of the second casing relative to the first casing due to the closing operation of the second casing. (5). In this way, since the stand member automatically closes due to the closing operation of the second housing, the operability during storage is good.

  In the present invention, the second housing mounting member and the hinge shaft are coupled so as to always rotate integrally, and the stand member rotation control means includes an engaging member that always rotates integrally with the hinge shaft. The engaging member rotates the rotating cam in a return direction to an intermediate angle position by rotation of the hinge shaft accompanying the closing operation of the second casing from the predetermined closing angle. When the rotary cam exceeds the intermediate angular position, the rotary cam slides in a direction approaching the rotary cam when the rotary cam exceeds the intermediate angular position due to the interaction between the rotary cam and the slide cam. Is rotated to an angular position corresponding to the storage posture of the stand member (Claim 6).

  According to the above configuration, when the second casing is closed, the engaging member rotates via the second casing mounting member and the hinge shaft. By this rotation of the engaging member, the engaging portion engages with the rotating cam, and the rotating cam is rotated in the return direction to an intermediate angle position corresponding to the predetermined closing angle of the second housing. When the rotation cam exceeds the intermediate angle position, the slide cam is slid in a direction approaching the rotation cam by the action of the elastic means. By this slide of the slide cam, the rotary cam is rotationally driven to an angular position corresponding to the storage posture of the stand member. This rotation of the rotating cam closes the stand member to the storage position.

  Further, the present invention provides a first friction torque generating means for enabling the second casing to be stopped and held at an arbitrary opening angle with respect to the first casing, the first casing mounting member and the hinge shaft. (Claim 7).

  Next, the terminal device according to the present invention is characterized in that the stand automatic opening / closing device having any one of the above configurations is provided between the first housing and the second housing. .

It is a perspective view of the open state of the terminal device using the switchgear concerning the present invention. It is a perspective view of the closed state (fully closed state) of the terminal device using the switchgear concerning the present invention. It is the perspective view which showed a part of opening state of the switchgear concerning the present invention from the slanting back. It is a disassembled perspective view of the switchgear concerning the present invention. (A) is sectional drawing of the 1st housing | casing attachment member which comprises the switchgear concerning this invention, (b) is BB arrow sectional drawing of (a), (c) is C- of (a). C arrow sectional view, (d) is a DD arrow sectional view of (a), (e) is an EE arrow sectional view of (a), (f) is an FF arrow of (a). FIG. It is an expansion perspective view of the hinge shaft which comprises the opening / closing apparatus which concerns on this invention. It is an expansion disassembled perspective view of the hinge shaft and the 1st friction torque generation means which comprise the opening / closing apparatus which concerns on this invention. (A) is an expansion perspective view of the joint member which comprises the opening / closing apparatus which concerns on this invention, (b) is B arrow directional view of (a). (A) is an expansion perspective view of the slide cam which comprises the opening / closing apparatus which concerns on this invention, (b) is a top view of the cam part of (a). (A) is a side view of the rotary cam which comprises the opening / closing apparatus which concerns on this invention, (b) is B arrow view of (a), (c) is C arrow view of (a). (A) is an expansion perspective view of the engaging member which comprises the opening / closing apparatus which concerns on this invention, (b) is B arrow directional view of (a). (A) is sectional drawing of the principal part of the switchgear which concerns on this invention, and has shown the vertex contact state of a slide cam and a rotation cam. (B) is AA arrow sectional drawing of (a). (A) is sectional drawing of the principal part of the opening / closing apparatus which concerns on this invention, and has shown the fitting contact state of a slide cam and a rotation cam. (B) is AA arrow sectional drawing of (a). (A) is sectional drawing which shows the angular positional relationship of the engaging member and rotary cam in the fully closed state of a 2nd housing | casing and a stand member in the opening / closing apparatus which concerns on this invention. (B) is a perspective view which shows the mutual relationship (original fitting contact state) of the slide cam and rotation cam in (a). (A) is sectional drawing which shows the angular positional relationship of an engaging member and a rotation cam in the predetermined opening angle (135 degree | times) state of a 2nd housing | casing and a stand member in the opening / closing apparatus which concerns on this invention. (B) is a perspective view which shows the mutual relationship (vertex contact state) of the slide cam and rotation cam in (a). (A) In the opening / closing apparatus according to the present invention, the angular positional relationship between the engaging member and the rotating cam when the second housing exceeds the predetermined opening angle (135 degrees) and the stand member assumes the working posture. It is sectional drawing shown. (B) is a perspective view which shows the mutual relationship (a fitting contact state after 180 degree | times rotation) of the slide cam and rotation cam in (a). (A) is the angular position of the engaging member and the rotating cam when the second casing is opened from the state of FIG. 16 (a) to the fully open state (180 degree open state) in the opening / closing device according to the present invention. It is sectional drawing which shows a relationship. (B) is a perspective view which shows the mutual relationship (a fitting contact state after 180 degree | times rotation) of the slide cam and rotation cam in (a). FIG. 18 is a cross-sectional view showing the angular positional relationship between the engaging member and the rotating cam when the second housing is closed 90 degrees from the state of FIG. 17A in the opening / closing device according to the present invention. (A) is sectional drawing which shows the angular positional relationship of an engaging member and a rotating cam when the 2nd housing | casing is closed to the predetermined opening angle (45 degree | times) state from the state of FIG. 18 in the opening / closing apparatus which concerns on this invention. It is. (B) is a perspective view which shows the mutual relationship (vertex contact state) of the slide cam and rotation cam in (a). (A) is an opening / closing device according to the present invention, wherein the second housing exceeds a predetermined opening angle (45 degrees) toward the 0 degree side, and the engaging member and the rotating cam in the middle of the stand member toward the fully closed state. It is sectional drawing which shows these angular position relationships. (B) is a perspective view which shows the mutual relationship (on the way to an original fitting contact state) of the slide cam and rotation cam in (a). In the opening / closing apparatus according to the present invention, the relationship among the opening / closing angle of the second casing, the opening / closing angle of the stand member, the angular position of the rotating cam, the advance / retreat position of the slide cam, and the angular position of the engaging member It is the operation | movement explanatory drawing put together.

  The best mode for carrying out the present invention includes a first housing and a second housing that are relatively openable and closable and can be stopped and held at an arbitrary opening angle. On the other hand, in a terminal device having a stand member for stably holding the second housing in the opened state, the stand member is automatically moved from a predetermined opening angle of the second housing to the working posture with respect to the first housing. A first housing attachment member attached to the first housing side, a second housing attachment member attached to the second housing side, the first housing attachment member and the second housing. A hinge shaft that couples the mounting member and the stand member so as to be relatively rotatable, and the stand member is automatically opened from a predetermined opening angle of the second housing relative to the first housing to the action posture. Stand member rotation control means , It is those with a. The stand member rotation control means is preferably arranged coaxially with the hinge shaft.

  Hereinafter, the case where the present invention is implemented in a notebook personal computer among terminal devices will be described. However, the terminal device embodying the present invention includes a laptop personal computer other than the notebook personal computer and a terminal device such as a PDA. .

  In FIG. 1, what is indicated by an instruction symbol 1 is a notebook personal computer as an example of a terminal device. The notebook personal computer 1 is a device main body provided with input means 2a such as a numeric keypad and a keyboard on the upper surface. A first casing 2 and a second casing 3 as a lid body provided with a display device 3a on the lower surface, the first casing 2 and the second casing 3 being an opening / closing device 4 according to the present invention; 4 are connected to be able to be opened and closed relatively in the vertical direction.

  As shown in FIG. 1, a pair of left and right opening / closing devices 4 according to the present invention are provided, but since the structure is the same, the right opening / closing device 4 will be described below. The right-side opening / closing device 4 includes a first housing attachment member 5 attached to the first housing 2 side, a second housing attachment member 6 attached to the second housing 3 side, and an opened notebook personal computer. And a stand member 7 for stably holding 1 on a mounting surface such as a desk.

  A pair of first casing attachment members 5 having the same configuration is disposed on the left and right of the first casing 2 as viewed from the user heading to the notebook computer 1. Each first housing attachment member 5 includes a plate-like attachment portion 5a and a cylindrical portion 5b attached integrally along one side of the attachment portion 5a. The attachment portion 5a of each first case attachment member 5 is fixed to the first case 5 using fixing means such as screws (not shown).

  The second housing attachment member 6 includes a horizontally-long rectangular plate-like attachment portion 6a and a cylindrical portion 6b attached integrally along one long side of the attachment portion 6a. The mounting portion 6a of the second housing mounting member 6 is fixed to the outer surface of the second housing 3 (the upper surface of the second housing in the closed state) using a fixing means such as a screw (not shown). However, in the embodiment, the second housing mounting member 6 and the second housing 3 are not illustrated, but are magnetically attracted to each other by the magnetic force attracting means. Can be removed from the second housing attachment member 6 and used as a tablet. Further, although they are magnetically attracted to each other, they are not separated from each other when the second housing 3 is opened and closed. In the attachment state of the second housing attachment member 6 to the second housing 3, the tubular portion 6b of the second housing attachment member 6 and the tubular portion 5b of the first housing attachment member 5 located on the left and right sides. The end faces are in contact and located concentrically between them.

  As shown in FIG. 4, the stand member 7 includes a horizontally-long rectangular frame plate-like stand portion 7a and cylindrical portions 7b and 7b attached integrally along the left and right ends of one long side of the stand portion 7a. And comprising. The stand portion 7 a has an opening 7 c that can receive the attachment portion 6 b of the second housing attachment member 6. Moreover, the thickness of the stand part 7a and the thickness of the attachment part 6a of the 2nd housing | casing attachment member 6 are made the same. As shown in FIG. 1, when the stand member 7 is attached to the opening / closing device 4, the cylindrical portions 7 b and 7 b of the stand member 7 are outside the cylindrical portion 5 b of the first housing mounting member 5 located on the left and right. The end faces are in contact with each other and are concentric with them. As shown in FIG. 2, in the fully closed state in which the second housing 3 is closed with respect to the first housing 2 and the stand portion 7 a is overlaid on the second housing 3, the opening of the stand member 7 is opened. The mounting portion 6a of the second housing mounting member 6 fits snugly into the portion 7c, and the upper surface of the stand portion 7a and the upper surface of the mounting portion 6a of the second housing mounting member 6 are continuous without a step. Since the stand portion 7a overlaps the second housing 3, when the second housing 3 is opened with respect to the first housing 2, the stand member 7 is rotated by being pushed by the second housing 3. open.

  In the present invention, as shown in FIGS. 3, 4, and 13, the first housing mounting member 5, the second housing mounting member 6, and the stand member 7 are relatively rotatable by the hinge shaft 8. Connected. That is, the hinge shaft 8 can relatively rotate the cylindrical portion 5b of the first casing mounting member 5, the cylindrical portion 6b of the second casing mounting member 6, and the cylindrical portion 7b of the stand member 7. Connect to Similarly, the hinge shaft having the same configuration as that of the hinge shaft 8 includes the cylindrical portion 5b of the other first housing mounting member 5, the cylindrical portion 6b of the second housing mounting member 6, and the other cylinder of the stand member 7. The part 7b is connected so as to be relatively rotatable.

  The opening / closing device 4 according to the present invention includes a stand member rotation control means 9 that automatically opens the stand member 7 from a predetermined opening angle of the second housing 3 with respect to the first housing 2. A pair of the stand member rotation control means 9 is preferably arranged on the left and right sides of the notebook computer 1 while sharing the second housing mounting member 6. This is because the rotation control force by the stand member rotation control means 9 reaches the stand member 7 in a balanced manner on the left and right. However, the present invention is not intended to exclude a mode in which the single stand member rotation control means 9 is provided in the present invention.

  In this embodiment, the left and right stand member rotation control means 9 have the same configuration, and only one of them will be described below.

  As shown in FIGS. 4 and 13, the hinge shaft 8 is inserted into the cylindrical portion 5 b of the first housing mounting member 5 and always rotates integrally with the second housing mounting member 6. The stand member rotation control means 9 includes a rotary cam 10 that always rotates integrally with the stand member 7, a slide cam 11 that engages with the rotary cam 10, and the slide cam 11 facing the rotary cam 10. And an elastic means 12 that constantly biases and an engaging member 13 that engages with the rotating cam. The stand member rotation control means 9 is disposed on the axis of the hinge shaft 8.

  As shown in FIG. 13, the hinge shaft 8 is inserted into the cylindrical portion 5 b as a hinge shaft insertion portion in the first housing mounting member 5. As shown in FIG. 6 in an enlarged manner, the hinge shaft 8 includes, in order from one end side to the other end side, a first deformation shaft portion 8b with a male screw groove 8a, a washer receiving flange 8c, a spring mounting portion 8d, A slide cam mounting portion 8e, a rotating cam mounting portion 8f, and a second deformation shaft portion 8h with a male screw groove 8g are provided. Further, a small screw hole 8j is formed in the flat portion 8i having no male screw groove 8a in the first deformation shaft portion 8b of the hinge shaft 8.

  On the other hand, in the cylindrical portion 5b of the first housing mounting member 5 through which the hinge shaft 8 is inserted, as shown in FIG. 5, in order from one end side to the other end side, the joint member accommodating circular hole portion 5c, A washer-accommodating deformed hole portion 5d, an inward flange 5e, a spring accommodating portion 5f, a slide cam accommodating deformed hole portion 5g, and a rotating cam accommodating circular hole portion 5h are formed.

  As shown in FIGS. 4 and 7, the first friction torque generating means 14 is attached to the hinge shaft 8 from one end side. As shown in FIG. 13, the first friction torque generating means 14 is mainly composed of a washer-accommodating deformation hole portion 5d of the cylindrical portion 5b in a state where the hinge shaft 8 is inserted into the cylindrical portion 5b of the first housing mounting member 5. Located in.

  As shown in FIG. 7, the first friction torque generating means 14 includes a first washer group 14a, a second washer group 14b, a spring washer 14c, a pressing washer 14d, and a locking nut 14e. . The first washer 14 f constituting the first washer group 14 a has a deformation hole 14 g corresponding to the cross-sectional shape of the first deformation shaft portion 8 b of the hinge shaft 8, and the washer of the first housing mounting member 5. It has an outer shape that can freely rotate in the accommodating deformation hole portion 5d. For this reason, the first washer group 14a always rotates integrally with the hinge shaft 8 in the washer-accommodating deformation hole 5d. On the other hand, the 2nd washer 14h which comprises the 2nd washer group 14b has the circular hole 14i which can rotate freely with respect to the 1st deformation | transformation shaft part 8b of the hinge shaft 8, and washer accommodation deformation | transformation hole part 5d. It has an outer shape corresponding to the cross-sectional shape. For this reason, the second washer group 14b engages with the washer-accommodating deformation hole 5d in a non-rotatable manner and is free from the rotation of the hinge shaft 8.

  As shown in FIG. 7, the first washer group 14a constituting the first washer group 14a and the second washer group 14h constituting the second washer group 14b are alternately and continuously mounted on the hinge shaft 8. An appropriate number of spring washers 14c and holding washers 14d are mounted on the hinge shaft 8 so as to overlap therewith, and a locking nut 14e is screwed to the male screw groove 8a of the first deformed shaft portion 8b. Thereby, the first washer group 14a and the second washer group 14b are held in a pressure contact state between the washer receiving flange 8c of the hinge shaft 8 and the retaining nut 14e so as to obtain a desired friction torque. . When the hinge shaft 8 rotates within the cylindrical portion 5b of the first housing mounting member 5, the first washer group 14a always rotates integrally with the hinge shaft 8, whereas the second washer group 14b does not rotate. For this reason, friction is generated between the first washer group 14a and the second washer group 14b, and a desired resistance is imparted to the rotation of the hinge shaft 8 within the cylindrical portion 5b of the first housing mounting member 5. Is done. The magnitude of the rotational resistance can be adjusted by the number of first washers 14f and second washers 14h.

  A joint member 15 is fixed to the first deformation shaft portion 8 b at one end of the hinge shaft 8. The joint member 15 always connects the hinge shaft 8 and the cylindrical portion 6b of the second housing attachment member 6 so as to be integrally rotatable. As shown in FIGS. 7 and 8, the joint member 15 has a deformed cylinder portion 15a, a cylindrical portion 15b concentric with the deformable cylinder portion 15a, and a central portion of the cylindrical portion 15b and the deformed cylinder portion 15a. A deformation hole 15c penetrating in the direction and a notch-shaped long hole 15d extending in the axial direction through the peripheral wall of the cylindrical portion 15b are provided. The deformation hole 15c is adapted to the first deformation shaft portion 8b of the hinge shaft 8 and receives the first deformation shaft portion 8b of the hinge shaft 8 in a non-rotatable manner.

  As shown in FIG. 7, the first deformation shaft portion 8b of the hinge shaft 8 is inserted into the deformation hole 15c of the joint member 15 from the cylindrical portion 15b side, and the connecting screw 16 is connected to the long hole 15d from the outside of the cylindrical portion 15b. Is inserted. Then, by screwing the connecting screw 16 into the screw hole 8j of the first deformed shaft portion 8b of the hinge shaft 8, the hinge shaft 8 and the joint member 15 are connected to each other so that they cannot be separated and can be integrally rotated. Due to the presence of the long hole 15d, the fixing position of the hinge shaft 8 with respect to the joint member 15 can be adjusted.

  As shown in FIG. 13, the cylindrical portion 15 b of the joint member 15 is accommodated in the joint member accommodating circular hole portion 5 c of the cylindrical portion 5 b of the first housing attachment member 5 so as to be slidable and rotatable. On the other hand, the deformed cylinder portion 15a of the joint member 15 is adapted to the deformed hole 6c (see FIG. 4) formed at the end of the tube portion 6b of the second housing mounting member 6. Therefore, the joint member 15 and the tube portion 6b of the second housing mounting member 6 are always connected by inserting the deformed tube portion 15a of the joint member 15 into the deformation hole 6c of the tube portion 6b of the second housing mounting member 6. They are connected so as to rotate together. As a result, the cylindrical portion 6b of the second housing mounting member 6 and the hinge shaft 8 are connected via the joint member 15 so that they can always rotate integrally.

  In assembly, the first friction torque generating means 14 and the joint member 15 are attached to the hinge shaft 8 from one end side in this order, and the hinge shaft 8 on which these elements are mounted is attached to the first housing from the other end side. The body mounting member 5 is fully inserted through the cylindrical portion 5b. When the washer receiving flange 8c of the hinge shaft 8 is in contact with the inward flange 5e of the cylindrical portion 5b of the first housing mounting member 5, the insertion mounting position of the hinge shaft 8 with respect to the cylindrical portion 5b of the first housing mounting member 5 Is determined. In this state, only the deformed cylinder portion 15 a of the joint member 15 protrudes from the cylinder portion 5 b of the first housing mounting member 5. Therefore, the deformed cylinder portion 15 a of the joint member 15 is engaged with the deformed hole 6 c of the tube portion 6 b of the second housing mounting member 6.

  By the said structure, the cylinder part 5b of the 1st housing | casing attachment member 5 and the cylinder part 6b of the 2nd housing | casing attachment member 6 are connected so that those end surfaces may contact and relatively rotate. When the second housing mounting member 6 is rotated with respect to the first housing mounting member 5, the hinge shaft 8 is connected to the second housing through the joint member 15 in the cylindrical portion 5 b of the first housing mounting member 5. It always rotates integrally with the mounting member 6. A predetermined rotational resistance is applied to the rotation of the hinge shaft 8 by the first friction torque generating means 14. Therefore, when the second housing 3 is opened / closed with respect to the first housing 2, a predetermined opening / closing resistance is generated in the second housing 3, and the second housing 3 is stopped at an arbitrary opening / closing angle by the opening / closing resistance. Retained.

  Next, the first cam mechanism 20 composed of the rotary cam 10, the slide cam 11, and the elastic means 12 will be described mainly with reference to FIGS. The first cam mechanism automatically opens the stand member 7 from the predetermined opening angle of the second housing 3 to the operating posture when the second housing 3 is opened with respect to the first housing 2. At the same time, the first cam mechanism 20 automatically moves the stand member 7 from the predetermined closing angle of the second housing 3 to the stowed posture when closing the second housing 3 with respect to the first housing 2. To close.

  In this embodiment, as an example, the predetermined opening angle of the second casing 3 with respect to the first casing 2 is set to 135 degrees, and the predetermined closing angle of the second casing 3 with respect to the first casing 2 is set. Is set to 45 degrees, but is not limited to these. The action posture of the stand member 7 refers to a posture in which the stand member 7 is opened to a horizontal state so as to touch the surface of a desk or the like on the back side of the notebook computer 1 (see FIG. 16A). On the other hand, the storage posture of the stand member 7 refers to a state in which the stand member 7 is overlapped on the second housing 3 of the notebook personal computer 1 that is completely closed (see FIGS. 2 and 14A). .

  As shown in FIGS. 4 and 13, with respect to the hinge shaft 8 inserted from one end side into the cylindrical portion 5 b of the first housing mounting member 5, the elastic means 12 serves as the elastic means 12 from the other end side of the hinge shaft 8. A compression coil spring, a spring receiving sleeve 17, the slide cam 11, the rotating cam 10, the engagement member 13, and a set nut 18 are mounted in this order. As a result, the compression coil spring 12 is positioned in the spring accommodating portion 5f in contact with the inward flange 5e in the cylindrical portion 5b of the first housing mounting member 5 and the spring mounting portion 8d of the hinge shaft 8. (See FIG. 6). The spring receiving sleeve 17 is in contact with the compression coil spring 12, the slide cam 11 is in contact with the spring receiving sleeve 17, the rotating cam 10 is engaged with the sliding cam 11, the engaging member 13 is engaged with the rotating cam 10, These engagement states are held by the set nut 18 screwed to the second deformed shaft portion 8h with the male screw groove 8g at the other end of the hinge shaft 8.

  As shown in FIG. 13, the slide cam 11 is positioned in the slide cam housing deformation hole 5 g in the cylindrical portion 5 b of the first housing mounting member 5, and the slide cam mounting portion 8 e ( 6).

  As shown in FIG. 9, the slide cam 11 includes an anti-rotation portion 11 a and a cam portion 11 b and includes an insertion hole 11 c that rotatably receives the hinge shaft 8 in the central portion axial direction. The detent portion 11a has a shape that matches the cross-sectional shape (see FIG. 5E) of the slide cam accommodating deformation hole portion 5g. For this reason, the slide cam 11 cannot rotate in the slide cam accommodating deformation hole portion 5g, and only sliding in the axial direction of the hinge shaft 8 is allowed. The cam portion 11b is located on the rotating cam 10 side with respect to the rotation preventing portion 11a, and has two concave portions 11d and 11d, two convex portions 11e and 11e, and a pair of gently inclined surfaces 11f that connect the concave and convex portions. , 11f and a pair of steeply inclined surfaces 11g, 11g. Each of the pair of gently inclined surfaces 11f, 11f extends in an angle range of 135 degrees centering on the axis X of the slide cam 11, and each of the pair of steeply inclined surfaces 11g, 11g is the axis X of the slide cam 11. It extends to an angle range of 45 degrees centered on. The slide cam 11 may be provided integrally with the spring receiving sleeve 17.

  As shown in FIG. 13, the rotary cam 10 is located in the rotary cam mounting portion 8 f of the hinge shaft 8 and is in the rotary cam housing circular hole portion 5 h in the cylindrical portion 5 b of the first housing mounting member 5. Positioned to be rotatable. The rotating cam 10 is free from the rotation of the hinge shaft 8.

  As shown in FIG. 10, the rotary cam 10 has a cam portion 10a, an O-ring mounting portion 10b, a deformed cylinder portion 10c, and a driven convex portion 10d, and can rotate the hinge shaft 8 in the central axial direction. Is provided with an insertion hole 10e. The cam portion 10a is composed of two concave portions 10f and 10f, two convex portions 10g and 10g, and inclined surfaces 10h and 10h that continue between the concave and convex portions. It engages with 11b and produces a predetermined interaction described later. The O-ring mounting portion 10b is formed between a pair of flanges 10i and 10i formed integrally with the rotary cam 10. As shown in FIG. 13, second friction torque generating means 19 composed of an appropriate number of O rings 19 a, 19 a... Is attached to the O ring mounting portion 10 b, and these second friction torque generating means 19 are rotated. Rotational resistance is applied to the rotating cam 10 by sliding contact with the inner peripheral surface of the cam housing circular hole 5h.

  As shown in FIGS. 4 and 13, the deformed cylindrical portion 10 c of the rotating cam 10 has a shape that fits into the deformed hole 7 d formed in the cylindrical portion 7 b of the stand member 7. Therefore, by inserting the deformed cylindrical portion 10c of the rotating cam 10 into the deformed hole 7d of the cylindrical portion 7b of the stand member 7, the rotating cam 10 and the stand member 7 are connected so as to always rotate integrally.

  As shown in FIG. 10, the driven convex portion of the rotating cam 10 protrudes from a part of the end surface of the rotating cam 10 on the engaging member 13 side to the engaging member 13 side.

  As shown in FIG. 13, the engaging member 13 is a cylindrical body that is rotatable in a deformation hole 7 d formed in the cylindrical portion 7 b of the stand member 7. As shown in FIG. 11, the engaging member 13 has a deformation hole 13a penetrating in the central axis direction. The cross-sectional shape of the deformation hole 13a matches the cross-sectional shape of the second deformation shaft portion 8h (see FIG. 6) at the other end of the hinge shaft 8. For this reason, by attaching the engaging member 13 to the second deforming shaft portion 8h of the hinge shaft 8, both can always rotate integrally.

  As shown in FIG. 11, an engaging portion 13b that protrudes toward the rotating cam 10 is formed on a part of the end surface of the engaging member 13 on the rotating cam 10 side. The engaging portion 13 b engages with the driven convex portion 10 d of the rotating cam 10 at a predetermined timing as the engaging member 13 rotates, and rotationally drives the rotating cam 10. A second cam mechanism 21 (see FIGS. 4 and 13) is configured by the engaging member 13 having the engaging portion 13b and the rotating cam 10 having the driven convex portion 10d. The second cam mechanism 21 rotates the rotating cam 10 in the return direction by a predetermined angle at a predetermined timing when the second casing 3 is closed with respect to the first casing 2. Thereby, the stand member 7 is automatically rotated in the closing direction at a predetermined timing.

  Next, the operation of the automatic stand opening / closing device 4 according to this embodiment will be described with reference to FIGS. FIG. 21 shows the opening / closing angle of the second housing 3, the opening / closing angle of the stand member 7, the angular position of the rotating cam 10, and the forward / backward position of the slide cam 11 in the opening / closing device 4 according to this embodiment. Since the mutual relationship with the angular position of the engaging member 13 is summarized, reference should be made throughout the following description of the operation. The operation of the automatic stand opening / closing device 4 described below will be described with respect to the automatic stand closing device 4 on the right side. However, as described above, the automatic stand opening / closing device 4 on the left side is also provided. Will be added at the same time.

  As shown in FIG. 2, in the fully closed state in which the second housing 3 is completely closed with respect to the first housing 2 of the notebook computer 1, the stand member 7 enters the opening 7 c into the second housing 3. The second housing attachment member 6 attached to is stored.

  In the fully closed state of the notebook personal computer 1 shown in FIG. 2 (the storage state of the stand member 7), the first cam mechanism 20 and the second cam mechanism 21 constituting the stand member rotation control means 9 are positioned as shown in FIG. There is a relationship. That is, as shown in FIG. 14B, the slide cam 11 and the rotary cam 10 constituting the first cam mechanism 20 are engaged with the projections 10g and 11e fitted into the recesses 11d and 10f. (Original mating contact state). As shown in FIG. 13, the engaged state is locked by the slide cam 11 being pressed against the rotary cam 10 by the compression coil spring 12. On the other hand, the engaging portion 13b of the engaging member 13 and the driven convex portion 10d of the rotating cam 10 that constitute the second cam mechanism 21 are located on both sides of the axis X of the hinge shaft 8 as shown in FIG. At an angular position of 180 degrees. The state of FIG. 14A is assumed to be an angular position of 0 degree for each of the second housing 3, the stand member 7, the rotating cam 10, and the engaging member 13.

  Next, when the user opens the second housing 3 with respect to the first housing 2 to use the notebook computer 1, the hinge shaft 8 rotates and is pushed by the second housing 3 to stand members. 7 also rotates and opens. At this time, as shown in FIG. 15, the engaging member 13 rotates with the rotation of the hinge shaft 8, and at the same time, the rotating cam 10 rotates with the rotation of the stand member 7. A direction in which the slide cam 11 compresses and compresses the compression coil spring 12 while the inclined surface 10 h of the cam portion 10 a of the rotating cam 10 and the gently inclined surface 11 h of the cam portion 11 b of the slide cam 11 are rubbed by this rotation of the rotating cam 10. (See FIG. 12). In this embodiment, as shown in FIG. 15A, when the opening angle of the second housing 3 reaches 135 degrees (predetermined opening angle), as shown in FIG. And the convex portions 10g and 11e of the slide cam 11 come into a vertex contact state.

  When the opening angle of the second housing 3 exceeds 135 degrees as the predetermined opening angle, the rotating cam 10 rotates together with the stand member 7 that is pushed and rotated by the second housing 3, and the rotating cam 10 slides. Since the cam 11 deviates from the apex contact state, the slide cam 11 advances due to the urging force of the compression coil spring 12, and the steeply inclined surface 11g of the slide cam 11 and the inclined surface 10h of the rotating cam 10 are rubbed together. The rotary cam 10 is further rotated by 45 degrees. As a result, as shown in FIG. 16B, the projections 11e and 10g of the slide cam 11 and the rotary cam 10 are fitted into the recesses 10f and 11d and engaged (180 degree rotation fitting). Contact state). Along with this rotation of the rotary cam 10, as shown in FIG. 16A, the stand member 7 is further rotated by 45 degrees, and the stand member 7 automatically shifts to an action posture in contact with the surface of a desk or the like. . This rotation of the stand member 7 is performed at a slow speed by the rotational resistance created by the second friction torque generating means 19 comprising a plurality of O-rings 19a, 19a.

  Since the second casing 3 of the notebook computer 1 is supported by the stand member 7 that has shifted to the operating posture, the fall of the second casing 3 is prevented and the user is opened at 135 degrees with respect to the opened second casing 3. Thus, even if an input operation such as a touch operation is performed, there is no concern that the second housing 3 falls backward.

  The 2nd housing | casing 3 can be changed into arbitrary angles between the open angles of more than 135 degree | times to 180 degree | times as needed. The second housing 3 is stopped and held at an arbitrary opening angle by the action of the first friction torque generating means 14. As shown in FIG. 17A, when the second housing 3 is opened up to 180 degrees, the engaging member 13 is 180 degrees with respect to the 0 degree angular position in FIG. Rotate to an angular position. Since the rotation of the hinge shaft 8 and the engaging member 13 does not affect the rotating cam 10 and the slide cam 11, the positional relationship between the rotating cam 10 and the slide cam 11 does not change. That is, FIG. 16B and FIG. 17B are exactly the same state.

  Next, as shown in FIG. 18, when the second casing 3 is closed from an opening angle of more than 135 degrees to 180 degrees, the opening angle of the second casing 3 is 90 degrees (first predetermined closing position). Until reaching the angle), the engaging member 13 rotates in the return direction through the hinge shaft 8 to the angular position of 90 degrees shown in FIG. 18 with respect to the angular position of 0 degrees of FIG. . During this time, there is no contact between the engaging portion 13b of the engaging member 13 and the driven convex portion 10d of the rotating cam 10 (obviously, comparing FIG. 17 (a) with FIG. 18), the stand member 7 is opened to the working posture. It remains stationary.

  When the engaging member 13 returns to the 90 ° angular position, the engaging portion 13b of the engaging member 13 contacts the driven convex portion 10d of the rotating cam 10 as shown in FIG. Then, as shown in FIG. 19 (a), when the second housing 3 is closed from the opening angle of 90 degrees to the opening angle of 45 degrees, which is the second predetermined closing angle, via the hinge shaft 8. Thus, the engaging member 13 further rotates 45 degrees from the 90 degree angular position shown in FIG. 18 in the return direction. As a result, the engaging portion 13b of the engaging member 13 drives the driven convex portion 10d of the rotating cam 10 to rotate, and the rotating cam 10 in FIG. 19 (a) with respect to the 0 degree angular position of FIG. 14 (a). It rotates by 45 degrees in the return direction to the angle position (intermediate angle position) of 135 degrees shown. By this rotation, the stand member 7 is closed from the acting posture to an opening angle of 135 degrees.

  At the same time, due to the rotation of the rotating cam 10, the slide cam 11 pushes the compression coil spring 12 while the inclined surface 10h of the cam portion 10a of the rotating cam 10 and the steeply inclined surface 11g of the cam portion 11b of the slide cam 11 rub against each other. It is retreated in the direction of contraction. Then, as shown in FIG. 19A, when the opening angle of the second housing 3 reaches 45 degrees by the closing operation of the second housing 3, as shown in FIG. It will be in the state of the vertex contact which the convex parts 10g and 11e of the cam 10 and the slide cam 11 contact | abut (the same state as FIG.15 (b)).

  Then, as shown in FIG. 20A, when the opening angle of the second housing 3 becomes smaller than 45 degrees by the further closing operation of the second housing 3, the rotating cam 10 contacts the slide cam 11 at the apex. Thus, the slide cam 11 advances due to the urging force of the compression coil spring 12, and the gently inclined surface 11h of the slide cam 11 and the inclined surface 10h of the rotating cam 10 rub against each other, while the rotating cam 10 is in FIG. It is rotationally driven from the intermediate angular position shown in a) toward the 0 degree angular position shown in FIG. 14A (FIG. 20B). Along with this rotation of the rotary cam 10, the stand member 7 is rotationally driven toward the 0 degree angle position shown in FIG. 14A, and as shown in FIG. 3 on top. This rotation of the stand member 7 is performed at a slow speed by the rotational resistance created by the second friction torque generating means 19 comprising a plurality of O-rings 19a, 19a. Then, by further closing operation of the second housing 3, as shown in FIG. 2 and FIG. 14, the notebook PC 1 in which both the second housing 3 and the stand member 7 are completely closed is shifted to the fully closed state. To do. As described above, the second housing 3 and the second housing mounting member 6 are magnetically adsorbed by magnetic adsorption means (not shown), but the second housing 3 is attached to the first housing 2. Even when the opening / closing operation is performed, they are not separated from each other. Of course, it is optional to fix the second housing mounting member 6 and the second housing 3 to each other with mounting screws or the like.

  Of course, the opening / closing timing of the stand member 7 accompanying the opening / closing operation of the second housing 3 is not limited to that of the present embodiment. By changing the first cam mechanism 20 and the second cam mechanism 21 to have different operation timings, the timing for opening and closing the stand member 7 accompanying the opening and closing operation of the second housing 3 can be freely set. be able to.

  Since the stand automatic opening / closing device according to the present invention is configured as described above, when the stand automatic opening / closing device is used for a terminal device having a first casing and a second casing that are connected to each other so as to be openable and closable, The stand member can be automatically opened from a predetermined opening angle with respect to the one case to support the second case. When the second case is closed with respect to the first case, the stand member is automatically restored. Since it can be returned to the position, it is preferably used as a device capable of improving the operability of the terminal device.

1 Terminal equipment (notebook computer)
2 1st housing | casing 3 2nd housing | casing 4 Stand automatic opening / closing apparatus 5 1st housing | casing attachment member 5b Hinge shaft insertion part (cylinder part) of 1st housing | casing attachment member
6 Second body mounting member 7 Stand member 8 Hinge shaft 9 Stand member rotation control means 10 Rotating cam 11 Slide cam 12 Elastic means (compression coil spring)
13 engaging member 13b engaging portion 14 first friction torque generating means 19 second friction torque generating means

Claims (8)

  A first housing and a second housing that are relatively openable and closable and can be stopped and held at an arbitrary opening angle, and the second housing is opened with respect to the first housing In the terminal device having the stand member for stably holding at the first housing side, the stand member is automatically opened from the predetermined opening angle of the second housing to the action posture with respect to the first housing. A first housing attachment member attached to the second housing attachment member, a second housing attachment member attached to the second housing side, the first housing attachment member, the second housing attachment member, and the stand member relative to each other. A hinge shaft that is rotatably coupled to the first housing, and a stand member rotation control means that automatically opens the stand member from the predetermined opening angle of the second housing to the working posture with respect to the first housing. End characterized by Equipment of the stand device for automatically opening and closing.   The stand automatic opening / closing device for a terminal device according to claim 1, wherein the stand member rotation control means is arranged on an axis of the hinge shaft.   The stand member is configured to be pushed by the second casing to be opened and the stand member is opened, and the stand member rotation control means is a rotation cam that always rotates integrally with the stand member, and is engaged with the rotation cam. And an elastic means for constantly urging the slide cam toward the rotating cam, and the second casing has the predetermined opening angle by the interaction between the rotating cam and the slide cam. 3. The rotation cam is rotated to an angular position corresponding to the action posture of the stand member by sliding the slide cam in a direction approaching the rotation cam when exceeding the rotation cam. A stand automatic opening and closing device for terminal equipment as described in 1.   The rotation cam and the slide cam are inserted by the hinge shaft in a hinge shaft insertion portion of the first housing mounting member, and the slide cam and the rotation cam are free from rotation of the hinge shaft, and the slide cam The terminal device according to claim 3, wherein the terminal device is slidable along the hinge shaft and is non-rotatably engaged with the hinge shaft insertion portion of the first housing mounting member. Stand automatic opening and closing device.   Due to the closing operation of the second casing, the stand member rotation control means automatically moves the stand member from the predetermined closing angle of the second casing with respect to the first casing to the stowed posture. 2. The stand automatic opening / closing device for a terminal device according to claim 1, wherein the stand automatic closing device is closed.   The second housing mounting member and the hinge shaft are coupled so as to always rotate integrally, and the stand member rotation control means includes an engaging member that always rotates integrally with the hinge shaft, A rotating cam engaging portion that rotates the rotating cam in a return direction to an intermediate angle position by rotation of the hinge shaft accompanying the closing operation of the second casing from the predetermined closing angle; By the interaction between the rotary cam and the slide cam, when the rotary cam exceeds the intermediate angle position, the rotary cam slides in a direction approaching the rotary cam to cause the rotary cam to move on the stand member. The stand automatic opening / closing device for a terminal device according to claim 3, wherein the stand automatic opening / closing device is rotated to an angular position corresponding to the storage posture.   First friction torque generating means is provided between the first housing mounting member and the hinge shaft for enabling the second housing to be stopped and held at an arbitrary opening angle with respect to the first housing. The stand automatic opening / closing device according to claim 1, wherein   A terminal device comprising the stand automatic opening / closing device according to claim 1 provided between the first housing and the second housing.

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