JPH09142221A - Opening/closing mechanism for lid body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with making a mechanism large in size and the like with its constitution made simple, and materialize excellent operating performance and handling properties. SOLUTION: This invention is concerned with the opening/closing mechanism opening/closing a rotatably supported lid body 10, and the mechanism is provided with a damper means 20 which energizes the lid body 10 so as to be rotated around a pivot axis 10a by an elastic mechanics means provided for the pivot axis 10a of the lid body 10, and with a cam slide mechanism 30 which is formed up between the lid body 10 and a base body 2 supporting the lid body 10, and guides and regulates the rotating operation of the lid body 10. The elastic mechanics means is formed up out of a torsion spring installed between the lid body 10 and the base body 2. When a slide cam 33 is moved along a guide plate 31, its operation is so controlled as to be engaged with the guide plate 31 at its appropriate positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism for opening / closing a lid for a glove box in an instrument panel of a vehicle such as a passenger car.

[0002]

2. Description of the Related Art Generally, in this type of vehicle, a storage case 2 called a glove box is provided at a proper position below an instrument panel 1 as shown in FIG. This storage case 2 is arranged in front of the passenger seat. Also, the storage case 2
The door (lid) 3 is rotatably supported around its pivot 3a as shown in FIG. 5, for example, and is opened up to near the knees of the passenger in the passenger seat.

[0003]

In recent years, the storage case 2, and hence the door 3, has tended to increase in size, and the door 3 accordingly.
The operation force to open and close is increased. Further, the large-sized door 3 is likely to hit the occupant's knee or the like as it is. Conventionally, for example, as shown in FIG.
The size H is reduced, or the opening degree θ of the door 3 is set small, which corresponds to the increase in size. Furthermore, as a conventional countermeasure, a storage case equipped with a two-part door,
There is known a storage case in which a door is switched between half-open and full-open by a leaf spring.

In view of the above points, it is an object of the present invention to provide a lid opening / closing mechanism that can effectively cope with an increase in size and the like with a simple structure and realize excellent operability and handleability.

[0005]

A lid opening / closing mechanism according to the present invention is an opening / closing mechanism for opening / closing a rotatably supported lid, and an ammunition provided on a pivot of the lid. A damper means for urging the lid body to pivot about a pivot axis by means, and the lid body and a base body supporting the damper means. The damper means guides and regulates the rotation operation of the lid body. The cam / slide mechanism described above is provided.

In the lid opening / closing mechanism of the present invention,
The ammunition means is composed of a torsion bar spring installed between the lid and the base.

In the lid opening / closing mechanism of the present invention,
The cam / slide mechanism includes a slide cam provided on the lid and a guide plate for the slide cam provided on the base body, and the slide cam moves at a proper position of the guide plate when moving along the guide plate. The operation is controlled so as to be engaged.

According to the present invention, the base body (inner box)
The lid body that is rotatably supported is urged in a closing direction with an appropriate elastic force by an elastic means preferably composed of a torsion bar spring. Here, when the lid is pulled and opened from the box side, in the cam / slide mechanism, the slide cam moves along the guide plate. The slide cam engages with the guide plate at an appropriate position on the way, and thereby the lid can be stopped at the half-open or full-open position. According to the present invention, the lid can be half-opened or fully-opened by a simple operation, and excellent usability can be realized in the opening / closing operation of the lid.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a lid opening / closing mechanism of the present invention will be described below with reference to FIGS. Will be explained.

The lid opening / closing mechanism of the present invention is applied to a container 2 arranged at a proper position below the instrument panel 1 as shown in FIG. This storage case 2 (hereinafter referred to as the inner box body) is arranged in front of the passenger seat as described above. Further, as shown in FIG. 1, the door (lid) 10 of the inner box body 2 is rotatably supported around a pivot 10a set at the lower part of the box of the inner box body 2.

The opening / closing mechanism is provided with a damper means for urging the door 10 to rotate about the pivot 10a. First, a structural example of the damper means 20 will be described. In FIG. 2, the damper means 20 is provided with an ammunition means composed of a torsion bar spring 21 installed between the door 10 and the inner box body 2. The torsion bar spring 21 is mounted inside the case 22. One end 21 of the torsion bar spring 21
The a is fixedly inserted into one end 22a of the case 22, and the other end 21b is fixedly inserted into the bearing 23b. Both ends 22a and 22b of the case 22 are rotatably fitted to bearings 23a and 23b, respectively.

The damper means 20 having the above-mentioned structure is provided with a bearing 23.
a and 23b are supporting portions 2a and 2b of the inner box body 2.
It is inserted and attached along the pivot 10a so as to be fixed to. The arm portion 10b of the door 10 is fixed to the case 22. Thereby, the door 10 is supported rotatably around the pivot 10a. In this case, the torsion bar spring 21 urges the door 10 in its closing direction with appropriate elasticity.

The opening / closing mechanism is provided between the door 10 and the inner box main body 2 supporting the door 10 and includes a cam / slide mechanism 30 for guiding and restricting the rotation operation of the door 10. As shown in FIG. 1, a guide plate 31 is fixed to the opening on the side surface of the inner box body 2.
The guide plate 31 has a guide hole 31a formed along an arc centered on the pivot 10a. A slider 32, which is fixed in place on the door 10, is also slidably mounted on the guide plate 31 along the guide hole 31a. The slider 32 rotatably supports the slide cam 33 with its cylindrical support shaft 32a.

A coil spring 34 is mounted between the slider 32 and the slide cam 33 supported by the slider 32. That is, one end 34 a of the coil spring 34 is locked to the pin 35 implanted in the slider 32, and the other end 34 b is locked to the arm 33 a of the slide cam 33. Two pins 36 and 37 are further implanted in the slider 32 at a position close to the support shaft 32a. The arm 33a of the slide cam 33 comes into contact with these pins 36 and 37, whereby the rotation of the slide cam 33 around the support shaft 32a is restricted.

The guide plate 31 also supports the lock piece 38 rotatably around the pin 31b. The lock piece 38 is arranged at a proper position along the guide hole 31a at a position where the tip portion 33b of the slide cam 33 can come into contact with the lock piece 38, and is urged to rotate counterclockwise by a coil spring 39. . As shown in FIG. 3, the lock piece 38 can rotate in the direction of arrow A against the elastic force of the coil spring 39. The tip portion 33b of the slide cam 33 has stepped guide surfaces 31d and 31d 'formed inside the guide hole 31a of the guide plate 31.
Regulated by. Further, the side end portion 33c of the slide cam 33 is regulated by stepped guide surfaces 31c and 31c 'formed inside the guide hole 31a.

In the lid opening / closing mechanism having the above structure,
The door 10 rotatably supported on the lower portion of the inner box body 2 is urged by the damper means 20 in a closing direction with an appropriate elasticity. As the door 10 rotates, the slider 32 moves along the guide hole 31a of the guide plate 31 as shown in FIG.
Or move in the opposite direction. In FIG. 3, the states corresponding to these positions are also shown.

First, when fully closed, the side end 33c of the slide cam 33 is restricted by the guide surface 31c.
Further, the tip portion 33b of the slide cam 33 has a guide surface 3
It is regulated by 1d. The arm 33 a of the slide cam 33 is in contact with the pin 36 due to the elasticity of the coil spring 34.

Next, when the closed door 10 is pulled from the inner box body 2 by pulling against the elasticity of the torsion bar spring 21, the slider 32 of the cam / slide mechanism 30 is guided along the guide hole 31a of the guide plate 31. Move from the fully closed position to the half open position. At this time, the tip portion 33b of the slide cam 33 moves in a form of sliding contact with the guide surface 31d, rotates the lock piece 38 in the direction of arrow A against the elasticity of the coil spring 39, and gets over the lock piece 38. The lock piece 38 passed over by the tip portion 33b immediately returns to the original position. And
Since the front end portion 33b of the slide cam 33 contacts the step portion between the guide surfaces 31d and 31d ', the door 10 stops at the half-open position.

Further, when the door 10 is opened from the half-open position to the fully-open position, the door 10 is slightly closed so that the tip 33 of the slide cam 33 that abuts the lock piece 38 again.
b rotates counterclockwise (state shown by a chain double-dashed line in the half-open position). After this operation, when the door 10 is reopened, the tip end portion 33b of the slide cam 33 moves while slidingly contacting the guide surface 31d '. The support shaft 32a of the slider 32 comes into contact with the end of the guide hole 31a of the guide plate 31, whereby the door 10 stops at the fully open position.

When the door 10 in the half open or full open position is returned to the fully closed position, the slider 32, the slide cam 33, etc. are moved to the positions shown in FIG.
Return to the initial state of When closing the door 10, the elasticity of the torsion bar spring 21 of the damper means 20 allows the door 10 to rotate smoothly and easily. The door 10 can be set to a predetermined opening and stopped by such a simple operation. For example, when the door 10 is opened to the half-opened position for normal loading and unloading of articles, the function as an appropriate article storage can be achieved after solving the problems such as the knee contact of an occupant. Further, when a relatively large object is taken in and out, the door 10 may be fully opened as needed.

In the lid opening / closing mechanism of the present invention, when the slider 32 slides along the guide hole 31a, a damper means or mechanism for sliding operation of the slider 32 is additionally provided to open and close the door 10. The ring can be improved. That is, a rack (arc shape) is laid along the traveling path of the slider 32 on the guide plate 31, and a pinion that meshes with the rack is provided at an appropriate position on the slider 32. The rack / pinion produces an appropriate resistance when the slider 32 slides, so that a suitable feeling can be obtained when the door 10 is opened and closed.

Although one embodiment of the present invention has been described, the lid opening / closing mechanism of the present invention can be effectively applied not only to vehicles such as passenger cars but also to other devices such as household electric appliances. Therefore, it is possible to obtain the same effects as those of the above embodiment.

[0023]

As described above, according to the present invention, this type of lid is set to a suitable opening with a simple structure to realize excellent operability and handleability, and the cost is easy. It can be effectively applied to vehicle types. Further, especially by adopting the insertion type torsion bar spring, it is possible to easily assemble without a special mounting screw or the like. Further, in the conventional pull-type two-stage opening / closing mechanism using a leaf spring or the like for setting the opening degree, it is difficult to adjust the setting load at half-open or full-open because the release load changes depending on the capacity of the storage box. Then, such adjustment becomes unnecessary. Further, as compared with a conventional case such as a storage case provided with a door having a two-part structure, there is an advantage that the erection property and appearance are improved because the parting edge is reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of essential parts in an embodiment of a lid opening / closing mechanism according to the present invention.

FIG. 2 is an exploded perspective view of essential parts in an embodiment of a lid opening / closing mechanism according to the present invention.

FIG. 3 is a diagram illustrating an operation example of the lid opening / closing mechanism according to the present invention.

FIG. 4 is a perspective view of a main part of a vehicle related to a conventional storage case.

FIG. 5 is a diagram showing a schematic configuration example of a storage case provided with a conventional door having a two-part configuration.

[Explanation of symbols]

 2 Inner box body 10 Door 10a Axis 20 Damper means 21 Torsion bar spring 22 Case 23a, 23b Bearing 30 Cam / slide mechanism 31 Guide plate 32 Slider 33 Slide cam 34 Coil spring 35, 36, 37 pin 38 Lock piece 39 Coil spring

Claims (3)

[Claims] 1. An opening / closing mechanism for opening and closing a rotatably supported lid body, wherein the lid body is pivoted around the pivot axis by an ammunition means provided on the pivot axis of the lid body. And a cam / slide mechanism that is formed between the lid body and the base body that supports the lid body, and that guides and regulates the rotation operation of the lid body. The lid opening and closing mechanism. 2. The opening / closing mechanism for the lid according to claim 1, wherein the ammunition means is constituted by a torsion bar spring installed between the lid and the base body. 3. The cam / slide mechanism includes a slide cam provided on the lid body and a guide plate for the slide cam provided on the base, and the slide cam moves along the guide plate. The opening / closing mechanism for the lid according to claim 1, wherein the guide plate is operated and controlled so as to be engaged at a proper position.