JP2003269438A - Opening/closing lid hinge device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing lid hinge device wherein breakage of an elastic element is prevented, and durability is improved. <P>SOLUTION: This opening/closing lid hinge device holds an opening/closing 40 in one side of a base body portion 22 so as to snap at a closing position and an opening position. The opening/closing lid hinge device comprises: a hinge plate 51 provided one member of both members of the base body portion 22 and the opening/closing lid 40; a movable hinge shaft 60 rotatably inserted in a hinge hole of the hinge plate and provided on the other member so as to move in an axial direction and transmit torque; an elastic element 65 provided between the other member and the movable hinge shaft 60 so as to be elastically compressed; and a cam mechanism 70 detachably arranged between the hinge plate 51 and the movable hinge shaft 60, moving the movable hinge shaft in the axial direction while compressing the elastic element 65 according to opening/closing action of the opening/closing lid 40, and capable of engaging at the closing position and the opening position of the opening/closing lid 40. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for an opening / closing lid in which an opening / closing lid is attached to one side of a base portion so as to be openable / closable, and the opening / closing lid is elastically held in a closed position and an open position. Regarding

[0002]

2. Description of the Related Art Conventionally, for example, in a vehicle sun visor, one in which a cosmetic mirror device is mounted on one side of a sun visor body is known. In this, as shown in FIG. 11, a mirror case 121 having a cosmetic mirror 124 is mounted in a recess formed on one side surface of the sun visor body 110. This mirror case 121
An opening / closing lid 135 is attached to the upper portion of the above so as to be openable and closable around the hinge shaft 160 on both left and right sides of the upper portion. Further, in order to elastically hold the opening / closing lid 135 in the closed position and the open position respectively, first and second locks that are adjacent to each other at a predetermined angle are provided at both left and right upper portions of the opening / closing lid 135. While the cam body 170 having the surfaces 171 and 172 is provided, the mirror case 121 has
Both the first and second locking surfaces 1 of the cam body 170 of the opening / closing lid 135
An elastic body 165 made of a substantially V-shaped metal leaf spring that is elastically engaged with 71 and 172 is attached. That is, the elastic body 165 composed of a substantially V-shaped leaf spring.
Is elastically deformed at the bent portion 166,
One side 167 is fixed to the mirror case 121, and the other side 168 is elastically pressed against both the first and second locking surfaces 171 and 172 of the cam body 170 of the opening / closing lid 135. Then, when the opening / closing lid 135 is closed, the other side 168 of the elastic body 165 is attached to the first locking surface 1 of the cam body 170.
By elastically pressing against 71, the opening / closing lid 135 is elastically held in the closed position, and when the opening / closing lid 135 is opened, the other side 168 of the elastic body 165 causes the second locking surface 172 of the cam body 170. The opening / closing lid 135 is elastically held in the open position by elastically pressing it.

[0003]

The elastic body 165 made of a substantially V-shaped leaf spring is elastically deformed in the bent portion 166 every time the opening / closing lid 135 is opened and closed, and the stress due to the elastic deformation is generated. Acts intensively on the bent portion 166. Therefore, the elastic body 165
May have been broken at its folds 166.

In view of the above-mentioned conventional problems, an object of the present invention is to provide a hinge device for an opening / closing lid capable of preventing damage to an elastic body and improving durability.

[0005]

In order to achieve the above object, a hinge device for an opening / closing lid according to a first aspect of the present invention is provided.
The gist is the configuration as described in. That is, a hinge device for an opening / closing lid, in which an opening / closing lid is attached to one side of the base portion so that the opening / closing lid can be opened and closed, and the opening / closing lid is elastically held in a closed position and an open position, respectively. Of the two members, the open / close lid, a hinge plate integrally provided on one member, a hinge plate of the hinge plate, and a hinge hole rotatably fitted in the hinge hole of the other member. Movable hinge shaft movably in a direction and capable of transmitting torque, an elastic body elastically compressible provided between the other member and the movable hinge shaft, the hinge plate and the movable hinge shaft. And the movable hinge shaft is moved in the axial direction while compressing the elastic body according to the opening / closing operation of the opening / closing lid, and the opening / closing lid is opened and closed. Can be engaged at each position Includes a cam mechanism, the.

Therefore, when the open / close lid in the closed state is rotated toward the open position against the engaging force of the cam mechanism, the engagement of the cam mechanism is first accompanied by the opening operation of the open / close lid. At the same time, the movable hinge shaft moves in the axial direction while elastically compressing the elastic body. When the opening / closing lid is rotated to a predetermined opening degree, the opening / closing lid is elastically urged to the open position and then held at the opened position by the action of the elastic force based on the elastic compression of the elastic body. Contrary to the above, when the opening / closing lid held at the open position is closed toward the closing position against the engaging force of the cam mechanism, the engagement of the cam mechanism is first caused by the closing operation of the opening / closing lid. Comes off,
The movable hinge shaft moves in the axial direction while elastically compressing the elastic body. When the open / close lid is rotated to a predetermined position,
After that, the opening / closing lid is elastically urged to the closed position and held at the closed position under the action of the elastic force based on the elastic compression of the elastic body. As described above, the elastic body that elastically compresses each time the opening / closing lid is opened and closed causes the opening / closing lid to elastically move between the closed position and the open position. Unlike the elastic body formed of a conventional V-shaped plate spring that deforms, it is possible to prevent the elastic body from being damaged at the bent portion, and it is possible to improve durability.

A second aspect of the present invention is based on a configuration as set forth in claim 2, wherein the hinge plates are provided in a pair at substantially the center of one member, and
A pair of movable hinge shafts are provided for the pair of hinge plates, and an elastic body is interposed between the pair of movable hinge shafts. Therefore, it is not necessary to elastically elastically pair the pair of movable hinge shafts, and the number of parts and the number of assembling steps can be reduced accordingly, and the cost can be reduced.

A third aspect of the present invention is based on a configuration as set forth in claim 3, wherein the base portion is a mirror case mounted on a vehicle sun visor body and having a makeup mirror. Therefore, with respect to the mirror case attached to the sun visor body and having the cosmetic mirror, the hinge device can open and close the open / close lid and elastically hold it in the closed position and the open position.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, which is a perspective view of a vehicle sun visor, a vehicle sun visor 1 includes a support shaft 2
And a sun visor body 10 are provided. The support shaft 2 is provided with a vertical axis portion 3 and a horizontal axis portion 4 and is formed into a substantially L-shape. The vertical axis portion 3 of the support shaft 2 is rotatable by a mounting bracket 5 to a front corner portion of a vehicle cabin ceiling surface. It is supported. The sun visor body 10 is rotatably attached to the horizontal shaft portion 4 of the support shaft 2 and is rotated around the axis of the horizontal shaft portion 4 so that the sun visor body 10 extends along the storage position along the vehicle cabin ceiling surface and the windshield. The arrangement is switched to the light shielding position.

A concave portion is formed in a substantially central portion of one side surface of the sun visor main body 10 (a surface facing the vehicle compartment when it is placed in a light shielding position), and the makeup mirror unit 20 is formed in the concave portion. It is installed. Makeup mirror unit 2
Reference numeral 0 includes a mirror case 22, which serves as a base portion, an opening / closing lid 40, and a hinge device 50. That is, FIGS.
As shown in FIG. 5, the mirror case 22 has a holding portion formed at a substantially central portion thereof corresponding to the makeup mirror 35 having a substantially horizontally long rectangular shape, and the makeup mirror 35 is mounted on the holding portion with its mirror surface exposed. Has been done. An opening / closing lid 40 in the shape of a substantially horizontally long rectangular plate that covers the mirror surface of the cosmetic mirror 35 so as to be exposed is opened and closed by the hinge device 50 at one side (upper side in FIG. 7) of the mirror case 22 and a closed position. It is elastically held and held in the open position (Figs. 7 and 8).
reference).

As shown in FIGS. 2 and 3, a hinge device 50 is provided.
Includes a hinge plate 51, a movable hinge shaft 60, an elastic body 65, and a cam mechanism 70 arranged between the mirror case 22 and the opening / closing lid 40. In this embodiment, a pair of left and right hinge plates 51 are integrally formed at a substantially central portion of the upper rear surface of the opening / closing lid 40 with a predetermined space therebetween. A circular hinge hole 52 into which a pair of movable hinge shafts 60 is pivotably and axially movably fitted is formed in the pair of hinge plates 51 so as to penetrate on the same center line.

On the other hand, as shown in FIGS. 5 to 10, a pair of movable hinge shafts 60 and a pair of elastic bodies 65 are respectively attached to the rear side of the upper portion of the mirror case 22 and the elastic body 65 is attached. An assembling recessed portion 25 is formed which also functions as a holding portion for elastically stretchable holding. In addition, at the upper part of the mirror case 22, the assembling recess 25
Square-shaped sliding holes 28 are formed in the left and right side wall surfaces 25a of each of the two. Further, a pair of notches 26 into which the pair of hinge plates 51 of the opening / closing lid 40 are respectively inserted in the assembling recesses 25 are formed on the front surface side of the upper center of the mirror case 22 (Fig. 1).

As shown in FIGS. 2 and 3, the pair of movable hinge shafts 60 includes a head portion 6 having a large diameter from one end to the other end.
1, a small diameter fitting shaft portion 62 and a square shaft-shaped sliding shaft portion 63 are formed on the same center line. The pair of movable hinge shafts 60 are fitted into the hinge shafts 52 of the pair of hinge plates 51 in the fitting shaft portions 62 so as to be rotatable and axially movable, and the sliding shaft portions 63 thereof. At
The mirror case 22 is fitted in the sliding hole 28 of the mounting recess 25 so as to be axially movable and torque-transmittable (see FIG. 9). Further, an elastic body 65 is interposed between the head portions 61 of the pair of movable hinge shafts 60 while being elastically compressed by a predetermined amount. The elastic body 65 is made of an elastomer material having rubber elasticity such as silicon rubber and is formed into a square bar shape or a round bar shape. The elastic body 65 is fitted into the mounting recess 25 while being elastically compressed by a predetermined amount. , Is held so that it can be elastically compressed more than in the fitted state.

Between the pair of hinge plates 51 and the heads 61 of the pair of movable hinge shafts 60, the elastic body 65 is elastically compressed by the opening / closing operation of the opening / closing lid 40 while the pair of movable hinge shafts is elastically compressed. A cam mechanism 70 for moving the 60 in the axial direction toward each other is provided. This cam mechanism 70
Is composed of an engaging concave portion 71 and an engaging convex portion 72 which are engageably and disengageably engaged at the closed position and the opened position of the opening / closing lid 40, respectively. In this embodiment, as shown in FIGS. 2 and 3, on one side surface of the pair of hinge plates 51, an annular seat portion 53 is formed along the peripheral edge portion of the hinge hole 52, and the seat portion 53. The three engaging recesses 71 are formed in a substantially concave arc shape at an angle of about 120.
On the other hand, as shown in FIGS. 3 and 4, on one side surface of the head portion 61 of the pair of movable hinge shafts 60, the opening / closing lid 40 is separated by about 120 degrees around the axis of the fitting shaft portion 62. At the closed position and the open position, three engaging convex portions 72 that engage with the respective engaging concave portions 71 in a disengageable manner are respectively formed in a substantially convex arc shape.

In this embodiment, as shown in FIGS. 5 and 6, the upper end of the opening / closing lid 40 is inserted into the upper edge of the mirror case 22 when the opening / closing lid 40 is opened. Protective wall 3 forming possible slit-shaped opening 30
1 is formed. The front end of the protective wall 31 is used as a stopper 32, and the stopper 32 is provided with an opening / closing lid 4.
The opening angle of the opening / closing lid 40 is limited by the contact of 0.

The hinge device for the opening / closing lid according to this embodiment is constructed as described above. Therefore, as shown in FIG. 7, in a state in which the opening / closing lid 40 is closed at the closed position with respect to the mirror case 22, as shown in FIG. 9, it is interposed between the head portions 61 of the pair of movable hinge shafts 60. Elastic body 6
5, the pair of movable hinge shafts 60 is repulsed in a direction away from each other, and the engaging projections 72 of the pair of movable hinge shafts 60 and the engaging recesses 71 of the pair of hinge plates 51 are held in a state of engaging with each other. To be done. Then, since the opening / closing lid 40 is held at the closed position by the engaging force of the engaging concave portion 71 and the engaging convex portion 72, a problem that the opening / closing lid 40 is unexpectedly opened is prevented.

When the cosmetic mirror 35 is used, the opening / closing lid 40 in the closed state is directed to the open position against the engaging force between the engaging concave portion 71 and the engaging convex portion 72, and the pair of movable hinge shafts 60 is provided. Rotate around the center. With the opening operation of the opening / closing lid 40, first, the engagement concave portion 71 and the engagement convex portion 72 are disengaged from each other, and the pair of movable hinge shafts 60 approach each other while elastically compressing the elastic body 65. It moves in the direction (see FIG. 10). Along with the subsequent opening operation of the opening / closing lid 40, the position immediately before the open position where the engaging concave portion 71 and the engaging convex portion 72 are engaged (for example, 5 from the open position).
When the opening / closing lid 40 is opened to a position (about a degree before), after that, the opening / closing lid 40 is rotated to the opened position by the action of the elastic force based on the elastic compression of the elastic body 65. That is, when the opening / closing lid 40 is opened to the position immediately before the open position, the elastic concave portion 71 moves the pair of movable hinge shafts 60 in a direction away from each other by the elastic force based on the elastic compression of the elastic body 65. A force for engaging the engaging convex portion 72 is generated. In other words, the elastic force based on the elastic compression of the elastic body 65 becomes a torque in the direction of opening the opening / closing lid 40, and the opening / closing lid 40 is rotated to the open position by the torque and held at the open position.

Contrary to the above, when the opening / closing lid 40 held in the open position is closed toward the closing position against the engaging force between the engaging concave portion 71 and the engaging convex portion 72, the opening / closing lid 40 is closed. First, the engaging concave portion 71 and the engaging convex portion 72
Is disengaged with the pair of movable hinge shafts 60,
The elastic bodies 65 are moved while approaching each other while elastically compressing them. Along with the subsequent closing operation of the opening / closing lid 40, the opening / closing lid 40 is closed to a position immediately before the closing position where the engaging concave portion 71 and the engaging convex portion 72 are engaged (for example, a position about 5 degrees before the closing position). Then, after that, the opening / closing lid 40 is rotated to the closed position by the action of the elastic force based on the elastic compression of the elastic body 65 and is held at the closed position in substantially the same manner as described above.

As described above, in this embodiment, the opening / closing lid 40 is elastically compressed into the closed position and the open position each time the opening / closing lid 40 is opened / closed. Unlike the conventional elastic body composed of a substantially V-shaped leaf spring that elastically deforms at the bent portion every time the opening / closing lid is opened and closed, it is possible to eliminate damage to the elastic body at the bent portion, and durability. Can be improved. Further, it is desirable that the elastic body 65 be formed of silicon rubber which is rich in weather resistance and rubber elasticity,
By forming the elastic body 65 of silicon rubber, the durability can be further improved. Further, in this embodiment, the pair of movable hinge shafts 6
By interposing the elastic body 65 between 0, there is no need to elastically separate the pair of movable hinge shafts 60 by separate elastic bodies 65, and the number of parts and the number of assembling steps can be reduced accordingly and the cost can be reduced. Can be planned.

The present invention is not limited to the above embodiment. For example, in the above embodiment,
Although a pair of hinge plates 51 corresponding to the pair of movable hinge shafts 60 are provided in the substantially central portion of the opening / closing lid 40, a pair of hinge plates 51 corresponding to the pair of movable hinge shafts 60 are provided at both ends in the width direction of the opening / closing lid 40. May be provided. In addition, a pair of movable hinge shafts 60 may be arranged on the opening / closing lid 40 so as to be movable in the axial direction and capable of transmitting torque, and a pair of hinge plates 51 corresponding to the pair of movable hinge shafts 60 may be provided on the mirror case 22. Good. Further, as the elastic body 65, a metal coil spring may be used instead of an elastomer material having rubber elasticity. Further, in the above-described embodiment, a case is described in which the makeup mirror unit 20 mounted on the sun visor body 10 is a hinge device for an opening / closing lid in which the opening / closing lid 40 is openably / closably mounted using the mirror case 22 as a base portion. However,
It can also be used as a hinge device for an opening / closing lid other than the makeup mirror unit 20. For example, it can also be used as a hinge device for an opening / closing lid in a vehicle console box.

[0021]

As described above, according to the present invention,
Since the elastic body elastically compresses each time the opening / closing lid is opened and closed, the opening / closing lid is elastically moved to the closed position and the open position. Therefore, unlike the conventional elastic body formed of a substantially V-shaped leaf spring,
The elastic body can be prevented from being damaged at the bent portion, and the durability can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a vehicle sun visor adopting a hinge device for an opening / closing lid according to an embodiment of the present invention.

FIG. 2 is a hinge plate of a hinge device, a movable hinge shaft,
It is a perspective view which decomposes | disassembles and shows an elastic body and a cam mechanism.

FIG. 3 is a hinge plate of the hinge device, a movable hinge shaft,
It is a perspective view which expands and shows a cam mechanism.

FIG. 4 is a front view showing a movable hinge shaft.

FIG. 5 is a rear view showing a makeup mirror unit that also employs a hinge device for the opening / closing lid.

FIG. 6 is a sectional view of the cosmetic mirror unit, which is also based on the line VI-VI of FIG. 5.

7 is a sectional view of the cosmetic mirror unit, which is also based on the line VII-VII of FIG. 5.

FIG. 8 is a sectional view showing a state in which the opening / closing lid is also opened to the open position.

FIG. 9 is an enlarged cross-sectional view showing a state in which the engagement concave portion and the engagement convex portion of the cam mechanism, which are also arranged between the hinge plate and the movable hinge shaft, are engaged with each other.

FIG. 10 is an enlarged cross-sectional view showing a state where the engagement concave portion and the engagement convex portion of the cam mechanism are disengaged from each other.

FIG. 11 is an explanatory diagram showing a makeup mirror unit of a conventional vehicle sun visor.

[Explanation of symbols]

10 sun visor body 20 Makeup mirror unit 22 Mirror case (base part) 27 Retaining part for elastic body 28 Sliding hole 35 Makeup Mirror 40 Open / close lid 50 hinge device 51 hinge plate 52 Hinge hole 60 movable hinge shaft 61 head 62 Mating shaft 63 Sliding shaft 65 Elastic body 70 Cam mechanism 71 Engagement recess 72 Engagement protrusion

Claims (3)

[Claims] 1. A hinge device for an opening / closing lid, wherein the opening / closing lid is attached to one side of the base portion so as to be openable / closable, and the opening / closing lid is elastically held in a closed position and an open position, respectively. A hinge plate integrally formed on one of the two members of the cover and the opening / closing lid; and a hinge plate rotatably fitted in a hinge hole of the hinge plate and the other member. A movable hinge shaft that is axially movable and capable of transmitting torque, an elastic body that is elastically compressible between the other member and the movable hinge shaft, the hinge plate, and the hinge plate. The movable hinge shaft is detachably disposed between the movable hinge shaft and the movable hinge shaft in the axial direction while compressing the elastic body according to the opening / closing operation of the opening / closing lid, and the opening / closing lid is closed. In position and open position respectively The hinge device of the cover that includes a multiplexer capable of cam mechanism. 2. The hinge device for an opening / closing lid according to claim 1, wherein the hinge plates are provided in a pair at substantially the center of one member, and the pair of hinge plates are movable with respect to the pair of hinge plates. A hinge device for an opening / closing lid, wherein a hinge shaft is provided, and an elastic body is interposed between the pair of movable hinge shafts. 3. The hinge device for an opening / closing lid according to claim 1, wherein the base portion is a mirror case mounted on a vehicle sun visor body and having a cosmetic mirror.