JPH05327234A - Cover opening/closing device - Google Patents

Abstract

PURPOSE:To provide a cover opening/closing device which is easily incorporated into a device without being troubled by the relative positions of each member with excellent appearance by incorporating each member in a case as a unit. CONSTITUTION:An opening/closing device 1 is permitted to energize a cover, which is arranged to freely turn, in an opening direction and to control the opening speed of the cover. The device 1 is fixed by a front-open case 2 mounted on the opening side of a device, a rack member 3 which freely moves to the front and rear for the prescribed distance in the case 2, a spring means 4 which energizes the rack member 3 to the case opening side, an arm 5 connected to freely turn on the front side of the rack member 3 with its free edge protruding from the case opening and the case 2. A damper 6 provided with a pinion that meshes with the teeth of the rack member 3 is provided and the free edge of the arm 5 is connected to the back plane of the cover.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid opening / closing device, and more particularly to a lid opening / closing device suitable for a lid rotatably arranged in front of an opening of a device.

[0002]

2. Description of the Related Art A lid provided in front of an opening of a device is
Japanese Utility Model Publication No. 61-136358 and Japanese Utility Model Publication No. 1811
As exemplified in Japanese Patent Publication No. 93, the lid is biased in the opening direction by a spring means such as a coil spring, and the lid is unlocked so that a damper-assisted opening speed can be obtained. ing. 6 and 7 show the switchgear shown in each of the above publications. In both of the opening / closing devices, a lid a arranged in front of the opening of the device is rotatably supported by a shaft b, and this lid a is provided with a spring means c provided around the shaft b (not shown in FIG. 12). In this structure, a damper e, which is a braking means fixed in the equipment, is engaged with the rack member d that is coupled to the back surface of the lid a and protrudes. Then, when the lock of the lid a (not shown) is released, the engagement between the rack teeth f of the rack member d and the pinion g of the damper e causes the lid a urged by the spring means c to be in the open state at the braking speed. Becomes

[0003]

However, in the above-mentioned conventional opening / closing device, the spring means c, the rack member d,
Since the dampers e and the like are individually attached to the lid and the equipment side, it is difficult to automate the assembly line of the equipment, or the relative position of the rack teeth f of the rack member d and the pinion g of the damper e. There was a problem that precision was a bother. Further, the rack member d is relatively long, and when the lid a is in an open state, particularly when the lid a is rotated by 90 degrees or more, a part thereof is exposed between the device and the lid a. There was also a problem in terms of appearance design such as the rack tooth f being visually observed.

Therefore, an object of the present invention is to incorporate each member into a case so as to form a unit, so that the member can be easily incorporated in the device side and the relative positioning of each member can be troublesome. Another object is to provide a lid opening / closing device that is excellent in appearance.

[0005]

In order to achieve the above object, the present invention urges a lid rotatably arranged on the front surface of an opening of an apparatus and urges the lid in the opening direction, and An opening / closing device for braking the opening speed, the case having a front opening attached to the opening side of the device, a rack member that freely moves back and forth within the case by a predetermined distance, and a rack provided in the case. Spring means for urging a member toward the case opening side; an arm rotatably connected to the front side of the rack member and projecting its free end from the case opening; and a rack fixed to a part of the case. The gist of the present invention is to provide a damper with a pinion that meshes with the teeth of the member, and to connect the free end of the arm to the back surface of the lid. Further, in the above structure, it is preferable that the arm is detachably and replaceably supported by a mounting shaft provided on the front surface of the rack member.

[0006]

According to the above opening / closing device, the rack member, the spring means, the arm, and the damper are assembled as an integrated body built in the case. In that state, for example, it is conveyed to an assembly line of the equipment and is then installed in the equipment side. In the equipment assembly line, since the case is fixed to the opening side of the equipment and the free end of the arm is connected to the lid side, the positional accuracy between the members is not bothered and the quality control as a single unit can be performed. Then, when the lid is unlocked, the rack member moves to the case opening side by the urging force of the spring means, and in conjunction with this, the arm moves forward. At this time, the movement of the rack member is braked by the damper, and the lid is rotated through the arm in the opening direction at the speed at which it is braked. Further, since the arm is detachably and rotatably supported by the mounting shaft of the rack member, only the arm needs to be replaced when changing the design of the lid, so that it is possible to easily respond to the usage conditions.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 5 show a lid opening / closing device structure according to an embodiment. Opening / closing device 1 for the lid shown in the figure
Is a box-shaped case 2, a rack member 3, a compression coil spring 4 as spring means, an arm 5, and an oil damper 6.
It is assembled as a one-piece with and built in.

The case 2 is a resin molded body having an open front surface. Mounting flanges 7 are provided on both outer side portions, a recess 8 is provided in the center of the upper surface, and a part of the recess 8 is placed inside the case. It has a through hole 9. Inside the case 2, guide rails 10 that oppose each other in the front-rear direction of the substantially middle portion on both inner sides, a cylindrical protrusion 11 that is on the back surface and protrudes toward the front surface of the opening, A long groove 12 for restricting the movement of the rack member 3 having an opening on the lower surface located right below is provided. Guide rail 10
A small contact portion 10a having a semicircular cross section is provided in the front-rear direction on the opposing end surface of the. The abutting portion 10a makes the sliding of the rack member 3 smooth and prevents rattling at the time of sliding. Further, the cylindrical projection 11 has a length extending to a substantially front-rear center in the case, and the compression coil spring 4 is guided by this. The compression coil spring 4 has a cylindrical protrusion 11
One end is locked to the base portion of and is compressed along the cylindrical protrusion 11.

The rack member 3 is a resin molded body having a size that allows it to move within the case 2, and the lower half of the rack member 3 is set as a slide holding portion 13 having a substantially E-shaped cross section. Thirteen
Standing walls 14 and 1 provided in the front-rear direction on both sides of the upper piece
Have five. The standing walls 14 and 15 are longer than the slide holding portion 13 and project rearward from this. Rack teeth 17 that mesh with the pinion 16 of the oil damper 6 are formed inside the standing wall 15. A total of four contact portions 12a corresponding to the above-mentioned contact portions 10a are provided on the inner opposing surfaces of the V-shaped upper and lower pieces of the slide holding portion 13, and corresponding guides are provided through these contact portions 12a. The rail 10 is sandwiched and slidably fitted. Also, the V-shaped vertical piece is set to be relatively thick, and a large hole 1 is formed in the rear portion except the front side.
8 is provided, and the cylindrical protrusion 11 is freely inserted into the hole 18. The long groove 12 is formed in the lower piece forming the hole 18.
A locking portion 19 that projects inward is provided. The locking portion 19 is displaced toward the hole 18 side through the slits 20 provided on both sides by receiving a predetermined pressing force from the outside.
Further, at the front end face of the vertical piece, at a predetermined interval,
A pair of flanges 21 projects forward, and a shaft 22 is integrally provided so as to connect both flanges 21.

An arm 5 is rotatably attached to the shaft 22. The arm 5 is made of a substantially V-shaped resin molded body.
The base 5a has a substantially U-shaped cross section with an opening facing downward, and can be inserted into the shaft 22 through the opening and detached from the shaft 22 for replacement. The free end 5b has a pair of flanges 23 and shafts 24 formed similarly to the flanges 21 and shafts 22,
It is connected to the lid-side rear surface via the projecting shaft 24.

Next, an example of assembling the above members will be described. In the case 2, when the oil damper 6 is arranged in the recess 8 and fixed by the screw 25, the pinion 16 thereof is located in the case through the hole 9. The rack member 3 is inserted and operated from the front opening of the case 2. in this case,
The tip side of the compression coil spring 4 is positioned in the hole 18, and each guide rail 10 is sandwiched inside the slide holding portion 13 as described above, and the locking portion 19 is pushed into the hole 18 through the slit 20. While doing. Stop 19 is long groove 12
When the rack member 3 enters the inside, the rack member 3 does not come out from the inside of the case 2, and the rack member 3 is installed in a state of being biased toward the front side of the case 2 by the compression coil spring 4, and some of the rack teeth 17 mesh with the pinion 16. When the rack member 3 is assembled, the arm 5 is attached to the shaft 22 in advance, and
It can be installed after the assembly is completed.

6 to 9 show examples of use of the switchgear 1, and the operation of the device of the present invention will be described below with reference to these figures. The equipment device is an audio device 30 mounted on an instrument panel or the like of an automobile. Sound device 30
Has a recess 31 on the front surface of the opening, which is set in the lateral direction.
An operation panel 32 is provided in the recess 31. The operation panel 32 has various operation units (not shown) arranged on the front surface of the panel and is operated by opening and closing the lid 33 to expose the operation unit. The opening / closing device 1 is attached to both sides of the operation panel 32, and a protruding latch 34 which is a locking means of the lid 33 is attached to the central portion.

The lid 33 is rotatably arranged between the both sides in the recess 31 by a pair of shafts 35, and the rear side thereof has an arm 5 of the opening / closing device 1 as shown in FIGS. 7 and 8. And the protruding latch 3 and the protruding latch 3
4 and a locking projection 37 that is provided in a projecting manner.
The bracket 36 has a substantially U-shaped cross section with an obliquely downward opening, and by pushing the shaft 24 of the arm 5 into the U-shape, the arm 5 is connected to the lid 33 via the shaft 24.

The pop-out latch 34 is housed in a case 38 and has a body 40 having a pair of locking pieces 39 that engages and disengages with the locking projection 37, a heart cam-shaped sliding body 41, and
It is a well-known one having a heart cam groove (not shown), a spring, etc. (for example, see Japanese Utility Model Laid-Open No. 2-147723). Then, with the shaft 35 as a fulcrum, the lid 33 is provided with the recess 31.
When it is rotated to the side,
Then, the main body 40 is pushed into the case 38 against the biasing force of the spring. In this state, the locking piece 39
Retracts inside the case 38 and bites the locking projection 37,
As shown in FIG. 8, the lid 33 is locked at the retracted position and the lid 33 is held in the locked state. Further, when the lid 33 is pushed in the direction of the arrow in FIG. 8, the lock is released. This lock is released by the sliding body 41.
Is pushed by the urging force of the spring to move the locking piece 39 in a direction projecting from the case 38, and as a result, the locking piece 39 is out of engagement with the locking projection 37 and is brought into a non-engaged state. Such a protruding latch 34 has an excellent appearance and is easy to operate.

A locking projection 37 for the protruding latch 34
When the lock is released, the lid 33 is rotated in the opening direction as shown by the imaginary line in FIG. FIG. 9 shows the opening / closing device 1 at that time.
Shows the operation of. The rack member 3 is moved forward by the urging force of the compression coil spring 4, and the locking portion 19 has the long groove 1.
When it comes into contact with the front end face 12a of No. 2, its movement is blocked. The movement of the rack member 3 is performed along the guide rail 10 and is subjected to the braking action of the oil damper 6. The oil damper 6 is a well-known one in which silicone oil or the like is put in the housing, and the pinion 16 is attached to the shaft portion protruding from the housing. When the rack member 3 is moved forward by the compression coil spring 4, the oil damper 6 moves. Gives moderate braking to speed. As a result, the rotation of the lid 33 connected to the rack member 3 via the arm 5 is braked by a smooth movement, and the quality is improved.

Further, the rotation range of the lid 33 is, in addition to the forward / backward movement amount L1 of the arm 5 regulated by the movement amount of the rack member 3 as shown in FIG. 10, the arm 5 is rotated about the shaft 22 as a fulcrum as shown in FIG. Since it is freely attached, the rotation amount L2 of this arm 5 is also added. This makes it easy to set the opening angle of the lid 33 to 90 degrees or more. Moreover, since the opening / closing device 1 can arbitrarily set the rotation range of the lid 33 only by changing the shape and the length of the arm 5, it is also possible to replace only the arm 5 according to the application conditions, for example. ..

FIG. 11 shows a modified example in which the opening / closing device having the above structure is provided with a protruding latch. In the opening / closing device 1 of the modified example, the external shape of the case 2 is different, and the projecting portion 41 is projected on the end face of the case front upper surface.
1 is used to fix the protruding latch 42 having the same structure as that described above. The product value can be improved by attaching the embossing latch 42. Thus, the opening / closing device of the present invention is not limited to this embodiment, and can be further modified or expanded within the scope of the claims.

[0018]

As described above, the lid opening / closing device according to the present invention is characterized in that the rack member, the spring means, the arm, and the damper are built into the case to form a unit. Is obtained. (1) In an assembly line of a device, assembly is easy, positioning of members is not bothered, and automation is easy. (2) Since the rack member is located inside the case when the lid is open, the teeth of the rack member are not visible even though a part of the arm is exposed, which improves the appearance of the design. This becomes remarkable when it is desired to increase the rotation range of the lid with respect to the front opening of the device. (3) In contrast to the operation of the conventional structure in which each member is individually incorporated in the device, quality control in a unit state can be performed, positional accuracy between members can be ensured, and the damping action of the damper can be obtained as designed. (4) According to the second aspect, only the arm needs to be replaced when changing the design of the lid, so that it is possible to readily respond to the usage conditions.

[Brief description of drawings]

FIG. 1 is an exploded cross-sectional view of a lid opening / closing device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the opening / closing device.

FIG. 3 is a view seen from above with an arm attached to a rack member of the apparatus component.

FIG. 4 is a view seen from below in a state in which an arm is attached to a rack member as described above.

FIG. 5 is a front view of the opening / closing device as viewed from the front side.

FIG. 6 is a layout view showing a usage example of the opening / closing device.

7 is a cross-sectional view taken along the line AA of FIG.

8 is a cross-sectional view taken along the line BB of FIG.

FIG. 9 is a cross-sectional view showing the operation of the opening / closing device with the lid open.

FIG. 10 is a cross-sectional view showing the operation of the opening / closing device with the lid closed.

FIG. 11 is a perspective view showing a modified example of the opening / closing device.

FIG. 12 is a cross-sectional view showing an example of a conventional opening / closing device.

FIG. 13 is a sectional view showing another example of a conventional opening / closing device.

[Explanation of symbols]

 1 lid opening / closing device 2 case 3 rack member 4 spring means 5 arm 6 oil damper 16 pinion 17 rack tooth

Claims (2)

[Claims] 1. An opening / closing device for urging a lid rotatably arranged in front of an opening of an equipment device in the opening direction and braking the opening speed of the lid. A case with a front opening attached to the opening side, a rack member that freely moves back and forth within the case by a predetermined distance, spring means provided in the case for urging the rack member toward the case opening side, and the rack. The arm comprises: an arm rotatably connected to the front side of the member, the free end of which projects from the case opening; and a damper with a pinion, which is fixed to a part of the case and meshes with the teeth of the rack member. A lid opening / closing device, wherein a free end of the lid is connected to a back surface of the lid. 2. The arm is detachably and replaceably supported by a mounting shaft provided on the front surface of the rack member.
The lid opening / closing device according to.