JP2018204209A - Door body opening/closing device and various cabinets comprising the same - Google Patents

Abstract

To provide a door body opening/closing device capable of changing a peak of opening/closing torque and then maintaining a closed state and an open state which are stable, and various cabinets comprising the door body opening/closing device.SOLUTION: A door body opening/closing device comprises: an attached member which has a back plate and both side plates and is attached to a cabinet body side; an opening/closing member which has an attached plate and both side plates attached to a door body, and also has both the side plates attached to both the side plates of the attached member rotatably through a hinge shaft; a lock cam member which is attached to the hinge shaft and rotates together with the opening/closing member; a spring holder which is housed in the attached member on the side of the hinge shaft; a slider which is housed in the attached member while facing the spring holder; and torque peak adjusting means which is formed of a main elastic member provided between the spring holder and the slider, and is enabled to adjust torque peak of the opening/closing member by using a link member.SELECTED DRAWING: Figure 4

Description

  The present invention is a door body opening / closing suitable for use when attaching a door body, commonly referred to as an overhead door body, which can be opened / closed vertically to cabinet bodies of various cabinets, to the cabinet bodies. The present invention relates to a device and various cabinets provided with the door opening / closing device.

  Conventionally, this type of door opening / closing device generally has a function that can be stably stopped and held in a state where the door is opened upward with respect to various cabinets in order to facilitate loading and unloading of items stored in the cabinet. It is hoped that As a conventional door opening and closing device for that purpose, for example, the one described in Patent Document 1 is known. In the door body opening / closing device described in Patent Document 1, the opening / closing device body is attached to both inner sides of the cabinet body, and the arm or stay is taken out from the opening / closing device body to support the door body. Many other types of door opening and closing devices have a similar configuration.

No. 2011-129154

  Since the door body opening / closing device described in Patent Document 1 has an arm and a stay that enter and exit the cabinet when the door body is opened and closed, as well as the door body opening / closing device itself projects on both inner sides of the cabinet. In addition, there is a problem in that the stored items in the cabinet interfere with the stored items, and the function of stably stopping and holding the door body at a predetermined opening angle of the door body is not sufficient. There was a problem. Further, the configuration is wasted by using another elastic member for the fluid damper means for reducing the impact when the door is closed.

  Therefore, in order to solve the above problem, the applicant of the present application is a door body opening / closing device that is provided between a cabinet body and a door body and connects the door body to the cabinet body so as to be openable and closable. A back plate and both side plates bent from the back plate; an attachment member attached to the cabinet body side; at least an attachment plate to which the door body is attached; and both side plates bent from the attachment plate. An opening / closing member that is rotatably attached to the both side plates of the attachment member via a hinge shaft, and a pressure receiving member that is attached to a turning position with the hinge shaft between the both side plates of the opening / closing member as a fulcrum A cam slider slidably provided in the mounting member in contact with the pressure receiving member, and the cam slider to press the cam slider toward the pressure receiving member. An urging means provided in the attaching member, and an engagement provided on the cam slider according to a slide position of the cam slider which is provided on the attachment member and varies depending on a rotation angle of the opening / closing member accompanying the opening / closing operation of the door body. Various doors having a door body opening / closing device and a child opening / closing device comprising an engaging means for detachably engaging with a portion and an elasticity adjusting means for adjusting the elasticity of the urging means have been proposed (Japanese Patent Application). Hei 2016-213435).

  The door body opening / closing device according to this prior application is one that adjusts the rotational torque of the opening / closing member by means of the elasticity adjusting means, but is not of a structure that can adjust the torque peak of the opening / closing member. The necessity of arbitrarily changing the torque peak of the opening / closing member within a predetermined range is desired mainly for convenience and versatility. Furthermore, it is also a technical problem to enhance the function of stably holding the door body in the 0-closed state or the open state opened 90 degrees without using a stay or arm.

  Therefore, an object of the present invention is to change the peak of the opening / closing torque of the door body in a door body opening / closing device that attaches the door body in an up / down direction to an opening provided on the front side of a cabinet body such as various cabinets. Further, the present invention is to provide a door body opening / closing device incorporating a function capable of stably holding the door body in a closed state and an open state of the door body, and various cabinets including the door body opening / closing device.

  In order to solve the above-mentioned problems, the present invention provides a door body opening / closing device provided between a cabinet body such as various cabinets and a door body, wherein the door body is connected to the cabinet body so as to be opened and closed in the vertical direction. A device having at least a back plate and both side plates bent from the back plate, an attachment member attached to the cabinet body side, at least an attachment plate attached to the door body, and both side plates bent from the attachment plate An opening / closing member rotatably attached to the both side plates of the attachment member via a hinge shaft, a lock cam member attached to the hinge shaft and rotating together with the opening / closing member, and the attachment A spring holder housed on the hinge shaft side in the member, and a spring in the mounting member facing the spring holder. By using a slider housed in an idling manner, one or more main elastic members provided between the spring holder and the slider, and a link member, the torque peak of the opening / closing member can be adjusted. Torque peak adjusting means.

  According to a second aspect of the present invention, the door body opening / closing device has a locking means capable of locking the door body at a predetermined opening / closing angle, and the locking means can be rotated together with the opening / closing member on the hinge shaft. A lock cam member attached in this manner, a recess provided in the lock cam member slidably provided on the spring holder side, a lock member engaged at a predetermined rotation angle of the opening / closing member, and the lock member as the lock cam member And a sub-elastic member that is biased to the side.

  According to a third aspect of the present invention, the torque peak adjusting means is located in the opening / closing member, and has a mounting base portion and both side plates erected from both sides of the mounting base portion. A position adjustment member slidably mounted, an adjustment screw of the position adjustment member provided between the position adjustment member and the opening / closing member, and a hinge shaft on each side plate of the opening / closing member and the position adjustment member A first link shaft that is inserted in each guide long hole that is positioned in the forward direction and intersects while changing directions, a second link shaft that is attached to the slider, the first link shaft, and the first link shaft The two-link shaft is constituted by a link member formed by connecting both ends thereof.

  According to a fourth aspect of the present invention, a fluid damper is provided between the spring holder and the slider to press the tip of the piston rod against the outer periphery of the lock cam member from a predetermined rotation angle in the closing direction of the opening / closing member. It is characterized by.

  Next, a fifth aspect of the invention is characterized in that a plurality of first and second position adjustment holes are provided between the opening / closing member and the position adjustment member so that the movement distance of each other can be measured.

  The invention according to claim 6 is characterized in that the main elastic member is provided with elastic fine adjustment means comprising an adjustment screw for fine adjustment of the elastic force.

  According to a seventh aspect of the present invention, the lock cam member is formed with a recess for receiving the lock member.

  The invention according to claim 8 is characterized in that various cabinets are provided with the door opening and closing device described above.

  According to the present invention having the above-described configuration, since the door opening / closing device does not protrude into the cabinet, it does not interfere with the stored items to be taken in and out of the cabinet, and the torque peak of the door body can be adjusted to make it more convenient. A device that can provide a high door body opening / closing device, in which a locking means is added, can stably stop and hold the door body at a predetermined opening / closing angle position by this locking means, and additionally uses a fluid damper. Is capable of performing a buffering operation so that the door body does not suddenly fall from its predetermined closing angle and close.

The cabinet which attached the door body opening / closing apparatus which concerns on this invention is shown, (a) is the whole perspective view of the state which closed the door body with respect to the cabinet main body, (b) is an expansion perspective view of the part of a door body opening / closing apparatus. . The cabinet which attached the door body opening / closing apparatus which concerns on this invention is shown, (a) is the whole perspective view of the state which opened the door body with respect to the cabinet main body, (b) is an expansion perspective view of the part of a door body opening / closing apparatus. . It is a top view of the door opening-and-closing device concerning the present invention. It is a disassembled perspective view of the door body opening / closing apparatus which concerns on this invention. It is the perspective view which looked at the attachment member of the door opening-and-closing device concerning the present invention from the lower side. It is explanatory drawing about the correlation of the opening-and-closing member of the door opening-and-closing device concerning the present invention, and a position adjustment member, (a) shows the disassembled state seen from the diagonal, and (b) shows the section state seen from the side. Yes. The lock cam member of the door body opening / closing apparatus according to the present invention is shown, (a) is a perspective view thereof, and (b) is a side view thereof. The spring case of the bright door body opening / closing apparatus which concerns on this invention is shown, (a) The perspective view, (b) is the longitudinal cross-sectional view. The slider of the bright door body opening / closing apparatus which concerns on this invention is shown, (a) The perspective view, (b) is the cross-sectional perspective view. It is for demonstrating operation | movement of the door body opening / closing apparatus which concerns on this invention, and shows the state of the opening-and-closing angle of the opening-and-closing member of the place which closed the door body with respect to the cabinet main body, (a) The part of an elastic member, b) shows a fluid damper portion, and (c) shows a link member portion. It is for demonstrating operation | movement of the door body opening / closing apparatus which concerns on this invention, and shows the state which opened the opening-and-closing member 30 degree | times from the state shown in FIG. 10, (a) The part of an elastic member, (b) is a fluid damper Part (c) shows the part of the link member. It is for demonstrating operation | movement of the door body opening / closing apparatus which concerns on this invention, and shows the state which opened the opening-and-closing member 60 degree | times from the state of FIG. 10, (a) The part of an elastic member, (b) is the part of a fluid damper , (C) shows the portion of the link member. It is for demonstrating operation | movement of the door body opening / closing apparatus which concerns on this invention, and shows the state which opened the opening / closing member 90 degree | times from the state shown in FIG. 10, (a) The part of an elastic member, (b) is a fluid damper Part (c) shows the part of the link member. It is a graph which shows the correlation of the hinge torque curve of the door body opening / closing apparatus which concerns on this invention, and the moment curve of a door body.

  Hereinafter, a preferred embodiment of the present invention will be described, for example, when used in a cabinet such as furniture. However, as described above, the door opening and closing device according to the present invention is not limited to a cabinet such as furniture. It can be used by being mounted on various equipment cabinets and others (for example, copying machines).

  1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b), a door body opening / closing device 4 according to the present invention described below is connected to a cabinet body 2 of a cabinet 1 such as furniture. It is explanatory drawing which shows the case where it attaches to an up-down direction so that opening and closing is possible. The door body opening / closing device 4 normally uses a pair of the same configuration, but one of them will be described in the following description.

  According to the drawing, the attachment member 5 of the door body opening / closing device 4 is vertically attached to the front side of the upper end portion (top plate 2 a) of the cabinet body 2, and the opening / closing member 6 is the same as the front side of the upper end portion of the door body 3. Installed vertically. The mounting method of the mounting member 5 and the opening / closing member 6 to the cabinet 1 is an example, and the mounting member 5 may be mounted on the top surface of the top plate 2a of the cabinet body 2 in the horizontal direction with respect to the top plate 2a. . In that case, the opening / closing member 6 may be the same as that of the present embodiment, or may be attached to the upper end edge of the door body 3 in parallel to the attachment member 5.

  3 to 9 show an embodiment of the door opening and closing device 4 according to the present invention. According to the drawings, the door opening and closing device 4 according to the present invention has at least a back plate 5a and both side plates 5b and 5b bent from the back plate 5a, and an attachment member 5 attached to the cabinet body 2 side, and a door. At least a mounting plate 6a to which the body 3 is mounted and both side plates 6b, 6b bent from the mounting plate 6a are provided, and the both side plates 6b, 6b are rotated to the side plates 5b, 5b of the mounting member 5 via the hinge shaft 7. An opening / closing member 6 movably attached, a lock cam member 8 attached to the hinge shaft 7 and rotating together with the opening / closing member 6, a spring holder 9 housed on the hinge shaft 7 side in the attachment member 5, and an attachment member 5, a slider 10 slidably provided facing the spring holder 9, and a plurality of sliders 10 provided between the spring holder 9 and the slider 10. In-elastic members 11, and locking means 13 for locking the opening and closing member 6 at a predetermined rotation angle, and a torque peak adjusting means C can adjust the torque peak of the closing member 6. In the specification of the present application, it is described as “bending both side plates, mounting plates, etc.”. However, when the mounting member 5, the opening / closing member 6, the position adjusting member 14 described later, and the like are made of synthetic resin. Can be integrally formed from the beginning without bending these members. Moreover, the main elastic members 11 and 12 may be single. In the drawing, the fluid damper 15 is provided between the spring holder 9 and the slider 10. However, when the fluid damper 15 is present, the door body 3 is suddenly moved when the door body 3 attached to the opening / closing member 6 is closed. It can be prevented from falling and being closed.

  More specifically, in addition to the back plate 5a and the side plates 5b and 5b bent from the back plate 5a, the mounting member 5 includes mounting plates 5c and 5c provided outward from the side plates 5b and 5b, A front plate 5d provided to hang down from the front side of the plate 5a to the mounting plates 5c and 5c, and a locking plate 5e bent from the front plate 5d to the inside between the side plates 5b and 5b. Yes. The front plate 5d is provided with a piston rod insertion hole 5f at the center thereof, and lock member insertion holes 5g and 5g are provided across the piston rod insertion hole 5f. Further, the side plates 5b and 5b are provided with first hinge shaft coupling holes 5h and 5h on the front end side, and guide long holes 5i and 5i on the rear side, and the mounting plates 5c and 5c are shown in FIG. As shown in FIG. 2 or FIG. 2, a mounting screw (not shown) is attached to the front side of the top plate 2a of the cabinet body 2 in the vertical direction.

  The opening / closing member 6 is provided with a rear plate 6c bent upward from the rear end portion side of the mounting plate 6a, and the hinge shaft 7 is inserted into the rear end portions of the both side plates 6b and 6b so that the mounting member 5 is inserted. The second hinge shaft connecting holes 6d, 6d for connecting to the both side plates 5b, 5b are provided, and the first hinge shaft connecting holes 6d, 6d are adjacent to the second hinge shaft connecting holes 6d, 6d in the vertical direction. Guide long holes 6e, 6e are provided. Furthermore, the mounting plate 6a is provided with four pairs of screw mounting holes 6f, 6f, 6f, 6f (some of which are not shown) at a substantially central portion thereof. The screw mounting holes 6f, 6f, 6f, 6f is attached to the front side of the upper end portion of the door body 3 in the vertical direction with the mounting screws 6k and 6k shown in FIG. The mounting plate 6a is provided with a plurality of first position adjusting holes 6g, 6g... (Partially omitted) on the left and right sides at the center, and fixed to the side plates 6b, 6b. .. And second position adjusting holes 6i, 6i... Are provided. Further, a female screw hole 6j is provided in the rear plate 6c.

  The attachment member 5 and the opening / closing member 6 are connected to each other by hinge shafts 7 inserted into the first and second hinge shaft connecting holes 5h, 5h, 6d, 6d provided on the both side plates 5b, 5b and 6b, 6b. It is connected rotatably.

  The lock cam member 8 is rotatably inserted into the hinge shaft insertion hole 8a provided in the longitudinal direction between both side plates 6b, 6b of the opening / closing member 6, and the lower side of the lock cam member 8 is formed on the rear plate 6c. By abutting against the upper edge, the hinge shaft 7 is rotated with the opening / closing member 6 as a fulcrum. The lock cam member 8 is provided with first lock recesses 8b and 8b on the lower side of the outer periphery of both end portions thereof, and on the upper side thereof second lock recesses 8c and 8c are formed. The first cam portion 8d for the convex portions 18a, 18a of the lock members 18, 18 is formed, and the second cam portion 8e is formed between the first lock concave portions 8b, 8b and the second lock concave portions 8c, 8c. .

  The spring holder 9 is accommodated on the front plate 5d side inside the mounting member 5, and the tip side thereof is surrounded by the back plate 5a, both side plates 5b, 5b, and the locking plate 5e. This spring holder 9 is provided with a convex portion 9a on one end portion side, and is formed on both sides thereof by a partition wall 9b and a pair of first spring accommodating holes 9c, 9c with their end portions released from each other. In addition, a fluid damper accommodating hole 9d with a bottom plate is provided in the central portion with one end thereof being released without being partitioned by the partition wall 9b. Further, a pair of lock member accommodation holes 9e, 9e are provided on the front plate 5d side of the attachment member 5 across the partition wall 9b, with the fluid damper accommodation hole 9d interposed therebetween.

  The slider 10 is slidably accommodated in the attachment member 5 so as to face the spring holder 9, and is provided with a pair of second spring accommodation holes 10b and 10b with a bottom plate 10a. One of the second spring accommodation holes 10b is provided with a screw insertion hole 10e that passes through the bottom plate 10a in the sliding direction and allows the fine adjustment screw 20a to be inserted therethrough, and the second link shaft insertion hole 10d orthogonal to the sliding direction. Is provided.

  The main elastic members 11 and 12 are compression springs, and are accommodated in the first spring accommodation holes 9c and 9c and the second spring accommodation holes 10b and 10b of the spring holder 9 and the slider 10, respectively.

  Lock members 18 and 18 are accommodated in the lock member accommodation holes 9e and 9e of the spring holder 9 together with the sub-elastic members 17a and 17b, respectively, and the protrusions 18a and 18a provided at the distal ends thereof after assembly are attached to the attachment members. The protrusions 18 a and 18 a are exposed from the lock member insertion holes 5 g and 5 g provided in the front plate 5 d of the No. 5 and are in pressure contact with the lock cam member 8. From the piston rod insertion hole 5f provided between the lock member insertion holes 5g and 5g on the front plate 5d, the projection 15c of the auxiliary member 15b brought into contact with the piston rod 15a of the fluid damper 15 protrudes, and the lock cam is also assembled during assembly. The first cam portions 8d and 8d of the member 8 are in pressure contact with each other. The auxiliary member 15b is accommodated in a fluid damper accommodating hole 9d provided in the spring holder 9.

  The position adjusting member 14 is slidably installed on the upper surface side of the mounting plate 6a of the opening / closing member 6. The mounting base portion 14a, both side plates 14b and 14b raised from both sides of the mounting base portion 14a, and the mounting base The rear plate 14c is raised from the rear side of the portion 14a. On the rear end side of both side plates 14b, 14b of the position adjusting member 14, guide long holes 14d, 14d for connecting the first link shaft 16a are provided obliquely. A pair of adjustment guide long holes 14e, 14e, 14e, 14e are arranged in parallel on the side plates 14b, 14b near the mounting base portion 14a at a predetermined interval, and on the mounting base portion 14a. A scale 14f is provided at the center. A plurality of first position adjusting holes 14g, 14g,... Are provided side by side on both sides of the scale 14f, and insertion long holes 14h, 14h (only one side) are provided on both sides of the first position adjusting holes 14g, 14g,. (Shown) is provided. A plurality of second position adjusting holes 14i, 14... Are provided in the side plates 14b, 14b, and a screw mounting hole 14k for the adjusting screw 22 is provided in the rear plate 14c. In particular, as shown in FIG. 6, the reference symbols 14 m and 14 m indicate mounting screws for fixing the position adjusting member 14 to the mounting plate 6 a of the opening / closing member 6.

  Next, the torque peak adjusting means C will be described. The torque peak adjusting means C is located in the opening / closing member 6 and has a mounting base portion 14a and both side plates 14b, 14b erected from both sides of the mounting base portion 14a. A position adjusting member 14 slidably attached to 6a, an adjusting screw 22 for adjusting the position of the position adjusting member 14 provided between the position adjusting member 14 and the opening / closing member 6, and the opening / closing member 6. Attached to the slider 10 and the first link shaft 16a inserted through the guide long holes 6e, 6e, 14d, 14d provided in the opposite side plates 6b, 6b, 14b, 14b of the position adjusting member 14 in different directions. The connecting holes 19a, 19b,... Provided on both sides of the second link shaft 16b, the first link shaft 16a, and the second link shaft 16b are connected to each other. The link members 19 and 19 and the female screw hole 6j provided in the rear plate 6c of the opening / closing member 6 are screwed, and the front end thereof is screwed into the screw mounting hole 14k provided in the rear plate 14c of the position adjusting member 14. And an adjusting screw 22.

  Spacer members 21 and 21 are inserted between the side plates 6b and 6b of the opening / closing member 6 and the side plates 14b and 14b of the position adjusting member 14, respectively, and mounting holes 21a and 21a and position adjusting holes 21b are respectively inserted. 21b... Are provided. In particular, the reference symbols 25, 25, 25, and 25 shown in FIGS. 4 and 6 are guide pins of the torque peak adjusting means C. The guide pins 25, 25, 25, 25 are provided with flanges, adjustment guide long holes 14 e, 14 e, 14 e, 14 e provided in the side plates 14 b, 14 b of the position adjustment member 14, and spacer members 21, 21. The mounting holes 21a, 21a, 21a, 21a are attached to the mounting holes 6h, 6h,... Provided in the both side plates 6b, 6b of the opening / closing member 6.

  The first link shaft 16a has guide long holes 6e, 6e provided in the vertical direction on both side plates 6b, 6b of the opening / closing member 6, and guide long holes 14d provided obliquely in the side plates 14b, 14b of the position adjusting member 14. 14d is penetrated, and the both ends are made to project outside the both side plates 6b, 6b of the opening / closing member 6, and the second link shaft 16b has an insertion hole 10c provided in the slider 10 perpendicular to the sliding direction. It penetrates through the guide long holes 5i, 5i provided in the side plates 5b, 5b of the mounting member 5 and protrudes outward. Here, as shown in FIG. 4, the hinge shaft 7, the first link shaft 16a, and the second link shaft 16b have flange portions 7a, 16c, and 16d on one end side, respectively, and caulk the other end side. As a result, they are prevented from coming off axially from the respective connection points.

  Each of the link members 19 and 19 is composed of a pair of two belt-like members that are overlapped with each other when the hinge shaft 7 is bent, and is disposed outside the side plates 5b and 5b of the mounting member 5. The first connection holes 19a, 19a provided on one end side are rotatably connected to the respective ends of the first link shaft 16a, and the second connection holes 19b, 19b provided on the other end side are connected to the second link shaft 16b. It is connected to each end part side so as to be rotatable. In particular, in FIG. 4, what is indicated by an instruction symbol 26 is a bearing member of the second link shaft 16b.

  Furthermore, although the thing of an Example is not an essential structural requirement of this invention, the elastic fine adjustment means 20 is provided in the one main elastic member 11 side among the main elastic members 11 and 12. FIG. The elastic fine adjustment means 20 includes a spring receiving member 20b applied to the end of the main elastic member 11, an adjustment plate 20c, and a fine adjustment screw 20a. A female screw hole 20d provided in the adjustment plate 20c. Through the screw insertion hole 10e provided in the bottom plate 10a of the slider 10.

  Next, the effect of the door body opening / closing device 4 according to the present invention will be described with reference to FIGS. FIG. 10 shows a state in which the door body 3 is closed with respect to the cabinet body 2 at an opening / closing angle of 0 °. In this state of the opening / closing angle of 0 °, the main elastic members 11 and 12 are linked by the link members 19 and 19. The projections 18a and 18a of the lock members 18 and 18 are compressed by the slider 10 pulled toward the spring holder 9 via the two-link shaft 16b. It has fallen in the recessed parts 8b and 8b. Since the sub elastic members 17a and 17b press the lock members 18 and 18 toward the first lock recesses 8b and 8b of the lock cam member 8, the door body 3 is locked in this closed state and is in a stable closed state. I keep it. Further, the protrusion 15c of the auxiliary member 15b attached to the piston rod 15a of the fluid damper 15 protruding through the piston rod insertion hole 5f provided on the front plate 5d of the mounting member 5 is provided on the outer periphery of the lock cam member 8. The two cam portions 8e are in pressure contact.

  FIG. 11 shows a state in which the door 3 is opened 30 degrees from the state where the opening / closing angle is 0 degrees shown in FIG. In this state, the protrusions 18 a and 18 a of the lock members 18 and 18 are released from the first lock recesses 8 b and 8 b of the lock cam member 8 and are in pressure contact with the first cam portions 8 d and 8 d on the outer periphery of the lock cam member 8. The shape of the first cam portions 8d and 8d causes the opening / closing member 6 to be urged to rotate upward, so that the door body 3 can be opened lightly without feeling its original weight.

  FIG. 12 shows a state in which the door body 3 is opened up to 60 degrees, and the protrusions 18a and 18a of the lock members 18 and 18 are pressed against the first cam sections 8d and 8d even at the opening and closing angle of 60 degrees. Therefore, the opening angle of 60 degrees can be maintained without falling naturally.

  FIG. 13 shows a state in which the door body is opened to 90 degrees. At the opening angle of 90 degrees, the protrusions 18a and 18a of the lock members 18 and 18 fall into the second lock recesses 8c and 8c of the lock cam member 8, Since the elastic members 17a and 17b press the convex portions 18a and 18a of the lock members 18 and 18 into the second lock concave portions 8c and 8c, the door body 3 is stably held at the opening angle of 90 degrees. Even the vibration and shaking of the cabinet 1 does not easily drop and close.

  Next, when the opened door body 3 is closed, the projections 18a and 18a of the lock members 18 and 18 are detached from the second lock recesses 8c and 8c of the lock cam member 8 and are moved to the first cam portion 8d of the lock cam member 8. When the opening / closing member 6 rotates in the counterclockwise direction in the drawing in the pressure contact state, the door body 3 is closed. When the door body 3 reaches a predetermined closing angle, the second cam portion 8e of the lock cam member 8 comes into pressure contact with the projection 15c of the auxiliary member 15b of the fluid damper 15, so that the door body 3 is prevented from suddenly dropping. Will be closed quietly.

  In the door body opening / closing device 4 according to the present invention, the above operation is such that the first link shaft 16a is in the turning position with the hinge shaft 7 as the center point, and the first link shaft is associated with the opening / closing operation of the door body 3. Since the second link shaft 16b slides the slider 10 through the link members 19 and 19 while the 16a is turning, the elasticity of the main elastic members 11 and 12 is changed.

  The torque peak adjusting means C adjusts the torque peak of the door body 3 by rotating the adjusting screw 22 of the position adjusting member 14 in either the left or right direction. That is, as shown in FIG. 6, when the adjusting screw 22 is rotated in either the left or right direction, the position adjusting member 14 slides with respect to the opening / closing member 6, and at this time, the first link shaft 16 a is moved to the position adjusting member 14. In the state where the link members 19 and 19 are connected by being guided by the guide long holes 14e and 14e provided in the side plates 14b and 14b, the guides move through the guide long holes 6e and 6e of the opening / closing member 6 in the vertical direction. As a result, the sliding width of the slider 10 through the second link shaft 16b due to the opening / closing operation of the door body 3 by the door body opening / closing device 4 changes, and the torque peak of the hinge torque of the door body opening / closing device 4 is set to 60 degrees. In this case, the first link shaft 16 a is a guide long hole 6 e of the opening / closing member 6. When the torque peak at the center of 6e is used as a reference, when the first slide shaft 16a is below the guide long holes 6e, 6e of the opening / closing member 6, as shown in FIG. The torque peak moves upward compared to the reference time. When the first link shaft 16a is above the guide slots 6e, 6e, the torque peak moves downward as compared to the reference time. FIG. 14 shows this in a torque curve diagram. According to FIG. 14, the curve indicated by M <b> 1 in the drawing is the moment curve of the door body 3, and the curve indicated by the curve N <b> 1 is the reference torque curve of the door body opening / closing device 4. According to the drawing, the torque peak in this case is 60 degrees. A curve N2 indicates a case where the position of the first link shaft 16a is below the guide elongated holes 6e, 6e of the opening / closing member 6, and a torque peak in this case is 50 degrees. The torque curve when the 1st link shaft 16a exists in the guide long holes 6e and 6e of the opening-and-closing member 6 is shown, and the torque peak in this case will be 70 degree | times.

  Thus, the torque peak of the door opening and closing device 4 according to the present invention can be adjusted in the range of 50 to 70 degrees. In order to make this adjustment accurate, the first position adjusting holes 6g, 6g, and the first position adjusting holes 14g, 14g,... Are formed in the mounting plate 6a of the opening / closing member 6 and the mounting base portion 14a of the position adjusting member 14. Second position adjusting holes 6i, 6i,... And second position adjusting holes 14i, 14i,... Are provided in both side plates 6b, 6b of the opening / closing member 6 and both side plates 14b, 14b of the position adjusting member 14. That is, as shown in FIGS. 3 and 6, the first position adjusting holes 14g, 14g... Of the position adjusting member 14 and the second position adjusting holes 14i, 14i. 6g, and the second position adjusting holes 6i, 6i,..., The position where the third one counted from the link shaft 16a side is the reference torque peak 60 degrees, and the first position adjusting member 14 Of the position adjustment holes 14g, 14g,... And the second position adjustment holes 14i, 14i,... And the first position adjustment holes 6g, 6g,. The torque peak at the position when the objects far from the link shaft 16a overlap is 50 degrees. Further, the first position adjusting holes 14g, 14g,... And the second position adjusting holes 14i, 14i,... And the first position adjusting holes 6g, 6g,. , 6i ··, the torque peak at a position where the ones closest to the link shaft 16a overlap each other is 70 degrees.

  Next, the elastic fine adjustment means 20 of the main elastic members 11 and 12 will be described. By rotating the fine adjustment screw 20a of the elastic fine adjustment means 20 provided on one main elastic member 11 side in either the left or right direction. Since the spring receiving member 20b moves in the axial direction of the main elastic member 11, the elasticity of the main elastic member 11 varies, and the elasticity can be adjusted.

  As another embodiment, although not shown, the hinge shaft 7 is divided into two so as to connect the side plates 6b, 6b on the opening / closing member 6 side and the side plates 5b, 5b of the mounting member 5 respectively. It may be configured.

  Since the present invention is configured as described above, the door body opening and closing device according to the present invention can be attached to the cabinet body of a cabinet such as furniture, so that the door body can be opened and closed, and the torque peak is adjusted at that time. As a door body opening / closing device that can be used, and as various cabinets using this door body opening / closing device, it is preferably used.

C torque peak adjusting means 1 cabinet 2 cabinet body 3 door body 4 door body opening / closing device 5 mounting member 5a back plate 5b side plate 5c mounting plate 5i guide slot 6 opening / closing member 6a mounting plate 6b side plate 6e guide slot 6g first Position adjusting hole 6i Second position adjusting hole 7 Hinge shaft 8 Lock cam member 9 Spring holder 10 Slider 10c Recess 11 Main elastic member 12 Main elastic member 13 Locking means 14 Position adjusting member 14a Mounting base portion 14b Both side plates 14d Guide long hole 14g First 1 position adjusting hole 14i 2nd position adjusting hole 15 Fluid damper 15a Piston rod 16a First link shaft 16b Second link shaft 17a Sub elastic member 17b Sub elastic member 18 Lock member 19 Link member 20 Elastic fine adjustment means 22 Adjustment screw

Claims (8)

A door body opening and closing device that is provided between a cabinet body such as various cabinets and a door body, and connects the door body so as to be openable and closable with respect to the cabinet body.
At least a back plate and both side plates bent from the back plate, and an attachment member attached to the cabinet body side;
An opening / closing member having at least a mounting plate attached to the door body and both side plates bent from the mounting plate, the side plates being rotatably attached to the side plates of the mounting member via hinge shafts;
A lock cam member attached to the hinge shaft and rotating together with the opening and closing member;
A spring holder housed on the hinge shaft side in the mounting member;
A slider accommodated in the mounting member so as to be slidable facing the spring holder;
One or more main elastic members provided between the spring holder and the slider;
A door body opening and closing device comprising: a torque peak adjusting means configured to adjust a torque peak of the opening and closing member by using a link member.   The door body opening / closing device includes a lock unit that can lock the door body at a predetermined opening / closing angle, and the lock unit is attached to the hinge shaft so as to be rotatable together with the opening / closing member; A recess provided in the lock cam member provided slidably on the spring holder side, a lock member engaged with the opening / closing member at a predetermined rotation angle, and a sub elastic member for urging the lock member toward the lock cam member; The door body opening and closing device according to claim 1, wherein The torque peak adjusting means is located in the opening / closing member, has a mounting base portion and both side plates erected from both sides of the mounting base portion, and is a position adjusting member slidably attached to the opening / closing member. When,
An adjustment screw of the position adjusting member provided between the position adjusting member and the opening and closing member;
A first link shaft inserted in each guide slot provided in each side plate of the opening / closing member and the position adjusting member in a forward direction from the hinge shaft and crossing each other while changing the direction; and the slider The door body opening and closing according to claim 1, comprising: a second link shaft attached; and a link member formed by connecting both ends of the first link shaft and the second link shaft. apparatus.   A fluid damper is installed between the spring holder and the slider to press the tip of the piston rod against the outer periphery of the lock cam member from a predetermined rotation angle in the closing direction of the opening / closing member. Item 4. The door opening and closing device according to Item 3.   4. The door body opening and closing according to claim 3, wherein a plurality of first and second position adjusting holes are provided between the opening and closing member and the position adjusting member so that a movement distance of each other can be measured. 5. apparatus.   The door body opening and closing device according to claim 1, wherein the main elastic member is provided with a fine elasticity adjusting means including an adjusting screw for finely adjusting the elasticity.   The door body opening and closing device according to claim 2, wherein the lock cam member is formed with a recess for receiving the lock member.   Various cabinets comprising the door opening and closing device according to any one of claims 1 to 7.

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