JPH0522791U - Energizing device for lid - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lid biasing device improved so that the portion exposed to the outer surface when the lid is opened is small and the assembly is easy. A lid biasing device 1 for applying a biasing force of at least one of opening and closing to a lid that is pivotally supported at one end by an opening of a housing to open and close, and a sector gear 5. An arm having a frame member 2 fixed to the casing, one end pivotally supported at the center of curvature of the sector gear 5 of the frame member 2 and the other end provided with a rotary damper 6 connected to a pinion gear 7 meshing with the sector gear 5. A member 3 and a lid pressing piece 10 that pivots integrally with the arm member 3 and engages with the lid are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a biasing device for a lid that covers an operation panel of an audio device or the like.

[0002]

[Prior Art]

 In audio equipment, there is a tendency to adopt a design in which the panel surface on which the adjustment knob, which is rarely used, is attached is usually covered with a lid. This lid is designed so that it can be held in the closed state by an alternate latch mechanism, and its opening speed can be adjusted appropriately by providing an opening direction urging device that combines spring means and a grease-filled damper. Settings may be made to improve quality.

As such a lid opening / closing device, a structure disclosed in, for example, Japanese Utility Model Publication No. 62-30236 is known. This structure has a structure in which a sector gear integrally provided on the lid meshes with a damper-equipped pinion gear provided on the housing side.

[0004]

[Problems to be solved by the device]

 According to this structure, since the sector gear is provided on the inner surface of the lid, it is necessary to take measures to make it inconspicuous when the lid is open, and since the sector gear and the pinion gear cannot be sub-assembled, Assembly can be cumbersome.

The present invention has been devised in order to improve such inconveniences of the prior art, and its main purpose is to expose only a small portion to the outer surface when the lid is opened and to make the assembly easy. SUMMARY OF THE INVENTION It is an object of the present invention to provide a lid biasing device improved so that

[0006]

[Means for Solving the Problems]

 According to the present invention, such an object is to attach a lid for applying an urging force of at least one of opening and closing to a lid whose one end is pivotally supported by the opening of the housing to open and close. A rotation device connected to a frame member having a sector gear and fixed to the housing, one end pivotally supported at the center of curvature of the sector gear of the frame member, and a pinion gear meshing with the sector gear. To provide an urging device for a lid, comprising: an arm member having the other end provided with a damper; and an engaging member that pivots integrally with the arm member and engages with the lid. Is achieved by

[0007]

[Action]

 With such a configuration, the frame member provided with the sector gear can be attached to a portion along the edge of the opening on the inner surface of the housing, and all the members for urging the lid are framed. It can be assembled in advance to the member. Therefore, the entire mechanism can be easily made inconspicuous from the outside, and the entire mechanism can be sub-assembled, which facilitates the assembly.

[0008]

【Example】

 Hereinafter, the structure of the present invention will be described in detail with reference to specific embodiments shown in the accompanying drawings.

FIG. 1 shows the entire biasing device for a lid constructed according to the present invention. The lid biasing device 1 includes a frame member 2 fixed to the housing side and an arm member 3 pivotally attached to one apex of the frame member 2.

The frame member 2 includes a fan-shaped portion 2a forming an angle of approximately 90 degrees, and two mounting portions 2b and 2c joined at right angles to both edges of the fan-shaped portion 2a, and provided on the housing. It is fixed to the inside of the side edge portion of the opening 4 with one of the mounting portions 2b. A sector gear 5 having an appropriate pitch diameter is integrally formed on the surface of the fan-shaped portion 2a facing the opening side.

The arm member 3 is pivotally attached to a key portion of the fan-shaped portion 2a, and a casing of a known grease-enclosed rotary damper 6 is fixed to its free end side. A pinion gear 7 that meshes with the sector gear 5 is connected to the rotary shaft of the rotary damper 6. The arm member 3 is constantly urged to rotate in one direction (for example, a direction to open the lid) by a torsion coil spring 9 wound around a fixed shaft 8 provided adjacent to the pivot 3a. Further, a lid pressing piece 10 that engages with a lid (not shown) is provided at the center of rotation of the arm member 3 so as to project in a direction perpendicular to the arm member 3.

According to the device of the present invention, the rotational biasing force of the torsion coil spring 9 applied to the arm member 3 is transmitted to the lid through the lid pressing piece 10 and the appropriate rotational resistance is given by the rotary damper 6. Combined with this, it is possible to realize the door opening operation at an appropriate speed.

In the lid urging device 1, the mounting portion 2b is fixed along the side edge of the opening 4 on the inner surface of the housing. Then, the part that goes out from the opening 4 to the outside is only the lid pressing piece 10, and if the receiving part of this is formed in the lid, the mechanism part does not have to be exposed when the lid is opened. Measures to improve the appearance of can be simplified. In addition, this mounting part has the same shape and is formed in two places at an angle of 90 degrees (2b and 2c), so it is easy to change the direction of the torsion coil spring 9 to the left or right. can do. Moreover, since the portion (2) fixed to the housing and the portion (10) engaging with the lid can be made into a sub-assembly as one component, this type of lid biasing device can be generalized, This eliminates the need for a dedicated design according to the equipment to be installed, leading to lower manufacturing costs.

[0014]

As described above, according to the present invention, it is possible to reduce the portion exposed to the outer surface when the lid is opened and to achieve a great effect in facilitating the assembling.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a biasing device for a lid according to the present invention.

[Explanation of symbols]

 1 urging device for lid 2 frame member 2a fan-shaped portion 2b, 2c mounting portion 3 arm member 3a pivot 4 opening 5 sector gear 6 rotary damper 7 pinion gear 8 fixed shaft 9 torsion coil spring 10 lid pressing piece

Claims (1)

[Scope of utility model registration request] 1. A lid biasing device for exerting at least one of biasing force of opening and closing on a lid which is pivotally supported at one end by an opening of a housing and opens and closes, and which has a sector gear. An arm member having a frame member fixed to the housing, one end pivotally supported at the center of curvature of a sector gear of the frame member, and the other end provided with a rotary damper connected to a pinion gear meshing with the sector gear. A biasing device for a lid, comprising: an engaging member that pivots integrally with the arm member and that engages with the lid.