JP2518157Y2 - Opening / closing device for lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for opening and closing a lid.

[Prior Art] Conventionally, as a lid opening / closing device of this type, a housing, a lid that opens and closes the front surface of the housing, a locking unit that locks the lid in a closed position, and a shaft that is axially fixed to the housing. A closed position in which the lid body is substantially upright on the front surface of the housing, and an arm that is openably and closably supported in an open position that is opened substantially horizontally downward from the closed position, and the arm is horizontally held in the housing. A slide groove is formed and the arm is horizontally moved along the slide groove so that the lid can be stored substantially horizontally below the housing, or both ends of the arm can be accommodated in the housing and the lid. It is known that the lid is pivoted about both axes so that it can be housed substantially horizontally under the housing (see, for example, Shokai Sho 61-).
No. 53974, No. 61-121788, No. 62-172
No. 183).

The locking means is formed on a strike formed on either one of the panel and the lid, and on the other of the panel and the lid, and engages with the strike at the closed position of the lid, The locking device locks the body in the closed position, and the locking device includes a base, a lock arm that is rotatably supported by the base and engages and disengages with the strike, and the lock arm is locked in the locking direction. 2. Description of the Related Art There is known one provided with a biasing spring means and a release push button for rotating a lock arm in a non-locking direction against the spring means (Japanese Utility Model Laid-Open No. 1-108981).

[Problems to be Solved by the Invention] However, in the above-described conventional opening / closing device, in the opened state, the lid is stored substantially horizontally below the housing, and therefore it is difficult to pull it out when closing the lid. There was a point.

Therefore, the switchgear according to claim 1 is made in view of the problems of the above-described conventional switchgear,
It is an object of the invention to provide an opening / closing device for a lid that is easy to close by tilting a front edge portion located on the front side of the lid upward when closing the lid.

Further, in the above-described conventional lock device, the push button is biased in the protruding direction by the spring means via the lock arm, but when the lid body is closed, the lock arm engages with the strike and locks. When the arm rotates in the unlocking direction, the lock arm separates from the push button, and at that time, the push button is once retracted or rattles, resulting in poor appearance. was there.

Therefore, the opening / closing device according to the second aspect is made in view of the problems of the above-described conventional locking device, and an object thereof is that the push button is temporarily retracted when the lid is closed. It is an object of the present invention to provide an opening / closing device for a lid body that does not cause rattling or rattling.

[Means for Solving the Problems] The present invention is for achieving the above-mentioned object, and its contents will be described below using embodiments shown in the drawings.

The switchgear according to claim 1 is, as shown in Figs. 1 to 12, a housing (40), a lid (20) for opening and closing the front surface of the housing, one end of which is the housing, and the other end is a lid. Each of them is axially fixed to the body, and the lid is substantially upright on the front surface of the housing, and the shaft portion (51, 6) of the one end from the closed position.
An arm (50, 60) that rotates downward around the housing around 1) and movably supports the lid at a storage position that is stored substantially horizontally below the housing, and the other end of this arm. Located between the lid and the storage position,
Energizing means (for example, a torsion spring 70) for tilting the front edge portion located on the front side of the lid body upward about the shaft portion (52, 62) of the other end of the arm is engaged with the arm, and The lid body is maintained substantially horizontal in the retracted position against the biasing force of the biasing means, and when the front edge portion of the lid body is pressed, the lid body is disengaged from the arm to bias the biasing means. And a cam device (80) for tilting the lid by a force.

Further, as shown in FIGS. 13 to 16, the opening / closing device according to claim 2 has a case (180) having an opening (181) at one end in a lock device (110) and slidable in the case. A slider (190) that is held, moves in and out of the opening of the case, and projects into the strike, a spring means (for example, a coil spring 200) that biases the slider toward the opening of the case, and a spring of the spring means. A cam plate (210) for retracting the slider against the urging force and a push button (220) for pressing the cam plate are provided, and a cam is provided between the slider and the cam plate via the push button. When the plate is pushed toward the slider, a cam surface (195) for retracting the slider is formed, and the cam plate elastically abuts the case to restore the push button. It is characterized in that a sex piece (214) is formed.

[Operation] Therefore, according to the opening / closing device of the first aspect, when the lid body (20) is in the storage position in which the lid body (20) is stored substantially horizontally below the housing (40), when closing the lid body,
First, the front edge portion located on the front side may be pressed.

When the front edge of the lid is pressed, the cam device (80) disengages from the arm (for example, the arm 60 on one side). Therefore, the lid body is urged by the urging means (for example, the torsion spring 70) between the lid body and the arm portion so that the shaft portion (52, 6) at the other end portion of the arm is
Tilt upward about 2).

Next, push up the front edge of the lid that tilted upwards,
It suffices to close the shaft center (51, 61) at one end of the arm upward.

Further, according to the opening / closing device of the second aspect, the elastic piece (214) of the cam plate (210) elastically abuts the case (180) so that the push button (220) always has a restoring force. To work. Therefore, when the lid (20) is closed,
Even if the slider (190) is pushed by the strike (230) and moves back into the case, the push button is not affected, and at that time, the push button can be prevented from retracting or rattling.

[Embodiment] FIGS. 1 to 12 show a first embodiment of the present invention. FIG. 1 shows a side view of the apparatus, and FIGS. 2 to 5 show a closed state of the apparatus. 2 is a front view, FIG. 3 is a side view, FIG. 4 is another side view, FIG. 5 is a plan view,
FIG. 7 shows a lock device, FIG. 6 is an enlarged plan view showing a lock member, FIG. 7 is a sectional view of a main part of the lock device, and FIGS. 8 to 10 show a cam device. FIG. 8 is an enlarged plan view showing the first cam plate, FIG. 9 is an enlarged plan view showing the second cam plate, FIG. 10 is a sectional view of the main part of the cam device, and FIGS. FIG. 11 is a side view showing the state in which the lid is being opened, and FIG. 12 is a side view showing the opened state of the lid, respectively, in order to explain the opening / closing operation of the present device. Show.

In the figure, 10 indicates an opening / closing device for a lid 20, and the device 10 is used as, for example, a decorative door that hides the front surface of an in-vehicle audio device (not shown), and the audio device is an installation panel of an automobile. The housing 40 is embedded in an opening 31 formed in the housing 30 and is embedded in the housing 40. A housing recess 32 for housing the lid 20 is provided below the housing 40.
Are formed.

As shown in FIGS. 2 to 5, the device 10 is roughly divided into
The housing 40 described above, the lid 20 that opens and closes the front surface of the housing 40, one end of which is pivotally attached to the housing 40, and the other end of which is axially fixed to the lid 20, so that the lid 20 is substantially upright on the front surface of the housing 40. Closed position and the shaft of the one end from the closed position
Rotate downwards of the housing 40 around 51, 61,
A pair of left and right arms 50, 60 for movably supporting the lid 20 in a storage position (see FIG. 12) that is stored substantially horizontally below the housing 40, and at least one of the arms 50, 60, here the front surface. It is located between the other end of the arm 60 on the right side as viewed from the cover and the lid body 20, and is in the storage position.
Engaging the right arm 60 with a biasing means for tilting the front edge portion located on the front side of the arms 50, 60 upward about the shaft portions 52, 62 of the other ends of the both arms 50, 60, for example, a torsion spring 70. The lid 20 is maintained substantially horizontal in the retracted position against the restoring force of the torsion spring 70, and the right arm 60 engages with the lid 20 when the front edge of the lid 20 is pressed. And a cam device 80 for tilting the lid 20 by the restoring force of the torsion spring 70.

The lid 20 may be opened downward by its own weight, but in this embodiment, as shown in FIG. 3, the restoring force of the tension spring 90 causes the lid 20 to always open. I am biased. More specifically, as shown in FIG. 3, one end of the tension spring 90 is locked to the tip of one end of the right arm 60, and the other end of the tension spring 90 is locked to the right side surface of the housing 40.
Due to the restoring force of the tension spring 90, the lid body 20 is urged to open downward with the shaft portions 51 and 61 of both arms 50 and 60 as the centers.

The maximum open position of the lid 20 is that the lower edge of the right arm 60 is
It is regulated by contacting the stopper pin 100 protruding from the right side surface of the housing 40, and the lid 20 is made substantially horizontal at this maximum open position (see FIG. 12).

Further, the lid 20 is locked in the closed position by the locking device 110 against the restoring force of the tension spring 90, as shown in FIG.

The locking device 110 is the third, sixth, and seventh in the present embodiment.
As shown in the figure, the lock pin 120 erected on the right side surface of the housing 40 and the right arm 6 are engaged with the lock pin 120.
It is composed of a hook-shaped lock member 130 which is axially fixed to one end portion of 0.

As shown in FIG. 6, the lock member 130 has a hook portion 131 hooked on the lock pin 120 at one end and a bearing portion axially fixed to the end of the one end of the right arm 60 at the other end.
Has 132. Then, at the end of one end of the right arm 60, as shown in FIG. 7, a cylindrical shaft tube 140 is erected,
The coil spring 141 and the bearing portion 132 of the lock member 130 are sequentially passed around the outer circumference of the shaft cylinder 140, and the shaft cylinder 140 is interposed via the O-ring 142.
The screw 143 is screwed into the cylinder to prevent it from coming off. Therefore, in the lock member 130, the bearing portion 132 is attached to the shaft tube 140.
Is rotatably attached to the outer periphery of the shaft and is movable in its axial direction.

As shown in FIG. 3, the coil spring 141 has its both end portions engaged with the right arm 60 and the lock member 130, respectively, so that the restoring force of the coil spring 141 causes the axial cylinder to return.
The locking member 130 is urged clockwise around 140. At the other end of the lock member 130, as shown in FIG. 6, a bending piece 133 is provided which is bent and extends toward the tip end surface of the right arm 60, and the bending piece 133 is provided at the tip of the right arm 60. By contacting the end face, the coil spring 141 receives the restoring force that tends to twist back (see FIG. 1).

Further, as shown in FIG. 7, the coil spring 141 is compressed by the facing surfaces of the right arm 60 and the lock member 130, and moves the lock member 130 away from the right arm 60, that is, toward the right side surface of the housing 40. I am biased.

As shown in FIGS. 6 and 7, in the hook portion 131 of the lock member 130, a lock groove 134 in which the lock pin 120 fits in the hook, and the lock groove 134 is adjacent to the lock groove 134. The lock pin 120 is opened while being inclined obliquely toward the right side surface, and a lead-out groove 135 for leading the lock pin 120 from the inside to the outside is formed. Further, as shown in FIG. 6, the outer edge of the hook portion 131 is provided with a hook opening 13 from its tip.
A tip inclined surface 137 is formed which is inclined obliquely toward 6 and guides the lock pin 120 into the hook.

The operation of the above-described lock device 110 will be described first. When the lid 20 is in the closed position, the lock pin 120 fits into the lock groove 134 of the lock member 130 as shown in FIG. Due to the restoring force, the lid 20 receives the force of opening. In this locked position, the lid
20 is slightly upright from the front surface of the housing 40 and is substantially upright so that the opening 31 of the panel 30 is substantially closed and the lid 20
Is substantially flush with the outer surface of panel 30.

In order to open the lid 20, the operating projection 21 protruding from the front surface of the lid 20 or the periphery thereof may be slightly pushed in with a finger.

When the lid 20 is pushed, the arms 50 and 60 are slightly tilted rearward about the shaft portions 51 and 61, whereby the locking member 130 axially fixed to the right arm 60 moves integrally with the arms 60 and 60, When the position of the lock groove 134 is displaced, the lock pin 120 disengages from the lock groove 134.

After that, the lock pin 120 moves into the lock groove 13 of the lock member 130.
By contacting the facing wall 138 on the side opposite to 4, the right arm 60
The rotation of is stopped and the lid 20 cannot be pushed any further.

Then, when the hand is released from the lid 20, the lid 20 is pushed back by the restoring force of the tension spring 90.

At this time, the lock member 130 slightly rotates clockwise around the shaft tube 140 due to the restoring force of the coil spring 141 that tries to untwist, so that the lock pin 120 moves relatively to the opening end of the lead-out groove 135. .

Then, when the lid body 20 is pushed back by the restoring force of the tension spring 90 and opened, the lock pin 120 causes the lock member 130 to lead out.
By advancing inside 135 and sliding its tip along the slope of the lead-out groove 135, the lock member 130 is lifted in the direction away from the right side surface of the housing 40 against the compression restoring force of the coil spring 141. Let Therefore, the lock pin 120 and the lock member 1
When 30 and 30 cross in the axial direction of the shaft cylinder 140, the lock pin 120 is disengaged from the hook portion 131 of the lock member 130, and the locked state is released (see FIG. 11).

When the locked state of the locking device 110 is released, the lid 20
Is the shaft part 5 of both arms 50, 60 due to the restoring force of the tension spring 90.
It opens downward around 1,61 (see Figures 11 and 12).

On the other hand, when the lid body 20 is closed, the lock pin 120 engages with the tip end inclined surface 137 of the lock member 130, the tip end inclined surface 137 is pushed by the lock pin 120, and the restoring force that tries to untwist the coil spring 141. Against this, the lock member 130 rotates counterclockwise around the shaft tube 140. Then, when the lock pin 120 reaches the hook opening 136 from the tip inclined surface 137 of the lock member 130, the restoring force of the coil spring 141 that tries to untwist causes the lock member 130 to rotate clockwise, so that the lock pin 120 is locked in the hook. The pin 120 fits in. This position is the lid 2
0 sets the closed position a little too far.

Thus, when the lock pin 120 is fitted into the hook, the restoring force of the tension spring 90 pushes the lid 20 back a little, so that the lock pin 120 is locked by the lock groove 134 of the lock member 130, as shown in FIG. Fits inside, tension spring 90
By the restoring force of, the lid 20 receives the force of opening. Therefore, the lid 20 is again locked by the locking device 110.
Locked in closed position.

On the other hand, when the lid 20 is opened by the restoring force of the tension spring 90, the braking force by the braking device 150 is exerted so that the lid 20 opens slowly and quietly.

In this embodiment, as shown in FIG. 3, a rotary damper 151 using oil is used, and the rotary damper 151 is fixed to the right side surface of the housing 40.
The rotary damper 151 forms an arc centered on the shaft 61.
The sector gear 153 that meshes with the gear 152 fixed to
Rotation damper when the lid 20 is opened and closed due to the meshing of both
Use the braking force of 151.

Further, as shown in FIGS. 3 to 5, the lid 20 is formed with a pair of left and right arm portions 22 and 23 extending rearward toward both left and right side surfaces of the housing 40. Then, as shown in FIGS. 3 and 4, the outer surfaces of both arm portions 22 and 23 extend from their tip end surfaces toward the lid 20, and the other end portions of both arms 50 and 60 are respectively fitted into the guides. Grooves 24 and 25 are formed respectively, the other ends of the arms 50 and 60 are inserted into the guide grooves 24 and 25, respectively, and are axially fixed in the guide grooves 24 and 25 by the shaft portions 52 and 62, respectively. Further, as shown in FIG. 3, a torsion spring 70 is passed through the shaft portion 62 of the right arm 60,
By engaging both end portions with the upper edge portion of the guide groove 25 and the lower edge portion of the right arm 60, respectively, the restoring force of the torsion spring 70 that tends to untwist causes the lid body 20 to center around the shaft portion 62. Bias clockwise.

As shown in FIGS. 3 and 4, the guide grooves 24 and 25 are provided with contact surfaces 24a and 25a, respectively, which are inclined obliquely upward at the respective upper edge portions, and are formed on the contact surfaces 24a and 25a. When the upper edges of the arms 50 and 60 contact each other, the restoring force of the torsion spring 70 is received and the lid body 20 is substantially upright in the closed position.

Further, as shown in FIG. 3, the right arm portion 23 of the lid body 20 is
The extension piece 26 extending downward in an L shape is formed, and at the closed position of the lid 20, the rear edge of the extension piece 26 is a housing.
By abutting on the stopper pin 100 protruding from the right side surface of 40, the counterclockwise rotation of the lid 20 is prevented, and the backlash of the lid 20 is prevented.

Next, the cam device 80 will be described. As shown in FIGS. 3 and 8 to 10, the cam device 80 is arranged from the inner surface of the distal end portion of the extending piece 26 of the lid 20 to the right side surface of the housing 40. It is composed of a cam pin 160 protruding toward the front and a cam member 170 engaged with the cam pin 160 and axially fixed to the right side surface of the housing 40.

The cam member 170 has a receiving groove 171a for receiving the cam pin 160 at one end as shown in FIGS.
A first cam plate 171 having the other end axially fixed to the outer circumference of a shaft portion 172 provided on the right side surface of the housing 40, and a first cam plate 171 axially fixed to the outer circumference of the same shaft portion 172 as the first cam plate 171. And overlaps the first cam plate 171 in the direction,
A second cam plate having a protruding piece 173a protruding outward
It consists of 173 and.

As shown in FIG. 10, the shaft portion 172 is provided with two coil springs 174 and 175 at both axial ends thereof, and the coil spring 174 located on the side of the first cam plate 171 causes the coil spring 174 to move to the first axial direction. The cam plate 171 is biased clockwise in FIG. Also, the coil spring 175 located on the second cam plate 173 side.
This urges the second cam plate 173 counterclockwise. The spring forces of both springs 174 and 175 are almost balanced or the spring force of one of the coil springs 174 is set to be weaker than the spring force of the other coil spring 175.

As shown in FIGS. 3 and 8, the first cam plate 171 is provided with an engagement piece 171b that engages with the second cam plate 173, and the first cam plate 171 is rotated clockwise by the engagement piece 171b. When it rotates, the second cam plate 173 is rotated together with the second cam plate 173. On the right side surface of the housing 40, as shown in FIG. 3, the protruding piece 1 of the second cam plate 173 is provided.
The standing piece 41 that engages with the 73a is provided, and the protruding piece 173 is attached to the standing piece 41.
The spring force of the coil spring 175 is received by the contact of a.

Next, the opening / closing operation of the lid 20 will be described.
As shown in the figure, when the lid 20 in the closed state is opened, the operation projection 21 on the front surface thereof may be pushed slightly inward.

When the lid 20 is pushed in, as described above, the locking device
The locked state of 110 is released, and the lid body 20 is opened downward integrally with both arms 50 and 60 around the shaft portions 51 and 61 between the housing 40 and the housing 40 by the restoring force of the tension spring 90 (first (See Figure 11). At this time, the sector gear 153 of the right arm 60
And the meshing with the gear 152 of the rotary damper 151 exerts a braking force, and the lid 20 opens slowly and quietly.

Then, when the lid 20 is opened to the state shown in FIG. 11, the cam pin 160 of the right arm 60 moves into the receiving groove of the first cam plate 171.
171a is engaged. Therefore, the cam pin 160 of the lid 20 is pushed by the first cam plate 171, and as shown in FIG.
The torsion spring is centered around the shaft 52, 62 between both arms 50, 60.
It rotates counterclockwise against the restoring force of 70.

When the lid 20 is further rotated between the housing 40 and the housing 40 about the shaft portions 51 and 61, the position of the cam pin 160 is displaced, so that the first cam plate 171 is pushed by the cam pin 160 and its shaft portion 172 is moved. Rotate clockwise around the center. At this time, the second cam plate 173 is engaged with the engaging piece 17 of the first cam plate 171.
It is pushed by 1b and rotates clockwise together with the first cam plate 171 against the restoring force of the coil spring 175 (see FIG. 12).

Then, at the position where the lower edge portion of the right arm 60 contacts the stopper pin 100 protruding from the right side surface of the housing 40,
The rotation of the shafts 51 and 61 of both arms 50 and 60 is stopped (Fig. 12). This stop position is the maximum opening position of the lid body 20, and the lid body 20 is opened substantially horizontally and is stored in the storage recess 32 on the lower side of the housing 40 as shown in FIG. At this time, the front edge of the lid 20 on the front side slightly protrudes to the front side from the front surface of the opening 31 of the panel 30.

On the other hand, in order to close the lid body 20, the protruding front edge portion may be slightly pushed downward.

When the lid 20 is pushed, the shaft portion 52 between the arms 50 and 60,
By rotating counterclockwise about 62, the position of the cam pin 160 is slightly raised, and the cam pin 160 is disengaged from the receiving groove 171a of the first cam plate 171. Therefore, due to the restoring force of the coil spring 175, the second
The cam plate 173 rotates counterclockwise around the shaft portion 172, and at that time, the first cam plate 171 causes the engagement piece 171b to rotate.
It is pushed by the second cam plate 173 through and rotates counterclockwise integrally with the second cam plate 173, and the position of the receiving groove 171a of the first cam plate 171 is displaced.

Then, when the lid body 20 is pushed, the lower edge portion of the guide groove 25 hits the lower edge portion 25b of the right arm 60, and it cannot be further pushed in. Therefore, when the lid body 20 is released, the lid body 20 is twisted by a torsion spring. The restoring force of 70 causes the shafts 52 and 62 between the arms 50 and 60 to rotate counterclockwise (see FIG. 1).

At this time, since the position of the receiving groove 171a of the first cam plate 171 is displaced, the cam pin 160 of the lid 20 is received by the receiving groove 171a.
It cannot return to a, and as shown in FIG. 1, it descends along the outer surface of the first plate 171.

Therefore, the lid body 20 has a shaft portion 52, between the arms 50, 60.
It becomes possible to rotate about 62, and further it rotates clockwise by the restoring force of the torsion spring 70, and as shown in FIG.
The amount of protrusion from the opening 31 increases.

At this time, the outer surface of the first cam plate 171 is the cam pin 1
When pressed by 60, the first cam plate 171 independently rotates counterclockwise about its shaft 172 against the spring force of the spiral spring 174 (FIG. 1). Further, the upper edge portions of both arms 50, 60 respectively contact the contact surfaces 24a, 25a of both guide grooves 24, 25 of the lid body 20 to receive the restoring force of the torsion spring 70, and the lid body 20.
Will no longer rotate.

To close the lid 20, the protruding front edge portion may be pushed upward.

When the lid 20 is pushed up, it rotates integrally with both arms 50 and 60 around the shafts 51 and 61 between the housing 40, and pushes the closed position to a position slightly overshooting, and the lid 20 moves the hand. When released, it is pushed back a little by the restoring force of the tension spring 90,
At that time, the locking device 110 operates and the lid 20 is locked in the closed position (FIG. 3).

The first cam plate 171 that was pushed by the cam pin 160
As shown in FIG. 3, when the cam pin 160 is raised, the cam pin 160 is returned and rotated by the spring force of the coil spring 174, and the engaging piece 171b abuts the second cam plate 173. Stop.

FIGS. 13 to 16 show another embodiment of the present invention. Particularly, regarding the improvement of the lock device 110, FIG. 13 is an exploded perspective view of the lock device, and FIG. 14 is a vertical sectional view showing an assembled state. FIG. 15 is a sectional view taken along the line XV-XV of the same, and FIG. 16 is an exploded perspective view showing a state during assembly.

The main locking device 110 is roughly divided into a case 180 having an open portion 181 at one end and a slidable inside of the case 180 as shown in FIG.
A slider 190 that moves in and out of 181; a coil spring 200 that serves as a spring unit that biases the slider 190 in the forward direction protruding from the opening 181 of the case 180; and a slider 190 that resists the biasing force of the coil spring 200. It comprises a cam plate 210 for retreating and a push button 220 for pressing this cam plate 210. Except for the coil spring 200, each component is individually integrally molded of plastic having appropriate elasticity and rigidity.

In the case 180, as shown in FIG. 13, a slider 190 is slidably held therein, and a slide groove 182 having an open top surface and having a U-shaped cross section is formed. Also, case 1
In 80, a frame portion 183 is formed at one end of the slide groove 182 to frame the open portion 181 in a U shape, and the other end of the slide groove 182 is closed by a rear wall 184.

As shown in FIG. 13, the slider 190 has a latch portion 191 that is inserted into and removed from the opening 181 of the case 180 at its tip.
At the same time, a boss portion 192 extending rearward is formed at the rear end portion, through which the spring 200 is passed. And
A through hole 185 through which the boss portion 192 of the slider 190 passes is formed in the rear wall 184 of the case 180.
By inserting the boss part 192 that passed the spring 200 into
The spring 200 is compressed between the inner surface of the rear wall 184 of the case 180 and the rear surface of the slider 190 (Fig. 14).

At the front end of the slider 190, as shown in FIG. 13, a retaining portion 193 having a saw-tooth cross-section is formed which protrudes from the upper surface of the slider 190 and has a slope facing rearward. Further, a recess 194 recessed from above is formed in the middle of the length of the slider 190, and a cam surface 195 inclined forward and downward is formed on the inner rear surface of the recess 194 so as to engage with the cam plate 210. To do.

As shown in FIG. 13, the slider 190 is inserted rearward in alignment with the opening 181 of the case 180. When the slider 190 is inserted, the retaining portion 193 engages with the front edge portion of the frame portion 183 of the case 180, and when the slider 190 is strongly pushed here, the inner edge portion of the frame portion 183 is pressed against the slope of the retaining portion 193. When the slider 190 is slightly opened, the retaining portion 193 of the slider 190 passes through the frame portion 183. Then, when the retaining portion 193 of the slider 190 passes through the frame portion 183, the frame portion 183 snaps back by the elastic restoring force of the resin, so that the slider 190 slides in the slide groove 18 of the case 180.
It cannot be pulled forward from within 2 (Fig. 14). Also, case 180
The vertical front surface of the retaining portion 193 of the slider 190 abuts on the rear edge of the frame portion 183 to receive the restoring force of the spring 200.

The cam plate 210, as shown in FIGS.
A slanted surface 21 that extends vertically from the center of the lower surface, projects into the recess 194 of the slider 190, and contacts the cam surface 195 of the recess 194.
1 and a pair of elastic pieces 214, 214 each extending forward and backward and each having abutting pieces 213 bent forward and backward and each having a L-shaped cross section downward toward the upper surface of the case 180.
And a pair of side pieces 215, 215 facing each other from the left and right edges of the center and vertically extending in a U-shaped cross section.

On the outer side surface of the both side pieces 215, as shown in FIG.
In the middle of the height, a claw portion 216 having a serrated cross section with a slope facing downward is projected.

On the other hand, as shown in FIGS. 13 and 15, on both side walls facing each other across the slide groove 182 of the case 180, the above-mentioned claw portions 216 of the cam plate 210 are respectively fitted, and long vertical holes are formed. Open 186 respectively.

The cam plate 210, as shown in FIG.
Align 5,215 with the open upper surface of the case 180 and fit it into the slide groove 182 from above.

When the cam plate 210 is fitted, the claw portions 216 of the both side pieces 215, 215 engage with the inner upper edges of the both side walls of the case 180, and when the cam plate 210 is strongly pushed in, the claw portions 216 are moved to the inclined surfaces. Are pushed by the inner surfaces of both side walls of the case 180, and the both side pieces 215 of the cam plate 210 bend inward toward each other, whereby the claw portion 216 advances into the slide groove 182 of the case 180. The claw portion 216 of the cam plate 210 is the long hole 186 of the case 180.
When it reaches, the both side pieces 215 snap back by the elastic restoring force of the resin, and the cam plate 210 cannot be separated upward from the case 180 (FIG. 15).

Therefore, when the central upper surface of the cam plate 210 is pushed through the push button 220, the elastic pieces 214 on both sides of the cam plate 210 bend downward in an arc shape, so that the claw portion 216 is moved to the case 1.
It descends along the long hole 186 of 80, and at this time, the pressing piece 212 also descends.

When the pressing piece 212 of the cam plate 210 descends, its slope
By pushing the cam surface 195 of the recess 194 of the slider 190 with 211, the slider 190 is retracted against the restoring force of the spring 200. Therefore, the latch portion 191 of the slider 190 is retracted into the slide groove 182 from the open portion 181 of the case 180.

Then, when the push button 220 is stopped from being pushed, both elastic pieces 214 of the cam plate 210 are restored by the elastic restoring force of the resin, so that the push button 220 is pushed back (14th position).
Figure). Further, the retracted slider 190 advances due to the restoring force of the spring 200, so that the latch portion 191 of the slider 190 moves to the case 1.
It again projects from the open portion 181 of 80.

The lock device 110 fixes the case 180 to either the lid 20 or the panel 30, for example, the lid 20. And
Either the lid 20 or the panel 30, the panel 30
Further, as shown in FIG. 14, at the closed position of the lid body 20, a concave strike 230 into which the latch portion 191 of the slider 190 of the lock device 110 is fitted is formed.

The locking device 110 may be arranged on the panel 30 side and the strike 230 may be arranged on the lid 20 side.

Therefore, the lid body 20 includes the latch portion 191 of the locking device 110.
By being fitted into the strike 230, it is locked in the closed position against the restoring force of the tension spring 90. To open the lid 20, the push button 220 of the lock device 110 may be pressed, and the latched portion 191 is retracted from the strike 230 as described above, whereby the locked state is released and the lid 20 is opened. Is opened downward by the restoring force of the tension spring 90.

Also, to close the lid body 20, the lid body 20 should be opened at the opening of the panel 30.
It suffices to push it toward 31. At this time, the latch portion 191 is pushed by the inner edge of the opening of the panel 30 and temporarily retracts against the restoring force of the spring 200.

At this time, the slider 190 retracts and its cam surface 195
However, since the cam surface 195 and the sloped surface 211 of the pressing piece 212 of the cam plate 210 move in the direction away from each other in the recess 194, the cam plate 210 is not affected at all and is pushed. Button 220 also does not move.

After that, the restoring force of the spring 200 causes the tension spring 90 to project again and fit into the strike 230.
Then, the lid 20 is received and the lid 20 is locked in the closed position.

In the embodiment shown in the drawings, the opening / closing device 10 for the lid 20 is used.
Although it has been used for a vehicle-mounted audio device (not shown), it can be widely used for a lid opening / closing device for home electric appliances, furniture, office equipment, etc. in addition to automobiles.

[Advantages of the Invention] Since the present invention is configured as described above,
The following effects are achieved.

According to the opening / closing device of the first aspect, since the lid can be stored substantially horizontally below the housing, the opened lid does not obstruct and is convenient, and when closing the lid, Since the front edge portion on the front side can be inclined upward and protruded forward, it is possible to provide a lid opening / closing device in which the lid is easily closed.

Further, according to the opening / closing device of the second aspect, not only is the structure of the locking device simple, but the push button does not temporarily retract or rattle when the lid is closed, so that the appearance of the device can be improved. It is possible to provide a lid opening / closing device with good performance.

[Brief description of drawings]

1 to 12 show a first embodiment of the present invention,
1 is a side view of the present apparatus, FIGS. 2 to 5 show the closed state of the present apparatus, FIG. 2 is its front view, FIG. 3 is a side view, and FIG. 4 is another side view. 5 and FIG. 5 are plan views, FIGS. 6 and 7 show a locking device, FIG. 6 is an enlarged plan view showing a locking member, and FIG. 7 is a sectional view of an essential part of the locking device.
8 to 10 show a cam device. FIG. 8 is an enlarged plan view showing a first cam plate, FIG. 9 is an enlarged plan view showing a second cam plate, and FIG. 10 is a cam device. 11 and 12 are cross-sectional views of relevant parts and correspond to FIG. 3, respectively, for explaining the opening / closing operation of the present apparatus. FIG. 11 is a side view showing a state in which the lid is being opened. FIG. 12 is a side view showing an opened state of the lid body, FIGS. 13 to 16 are other embodiments of the present invention, FIG. 13 is an exploded perspective view of the locking device, and FIG. 14 is an assembled state. FIG. 15 is a sectional view taken along line XV-XV of the same, and FIG. 16 is an exploded perspective view showing a state during assembly. 10 …… Opening / closing device, 20 …… Lid body, 40 …… Housing, 50,6
0 ... Arm, 51, 61 ... Shaft at one end, 52, 62 ... Shaft at the other end, 70 ... Torsion spring as biasing means, 80 ...
Cam device, 110 …… Lock device, 180 …… Case, 181…
... Opening part, 190 ... Slider, 194 ... Concave part, 195 ... Cam surface, 200 ... Coil spring as spring means, 210
…… Cam plate, 214 …… Elastic piece, 220 …… Push button, 230 …… Strike.

Claims (2)

(57) [Scope of utility model registration request] 1. A housing, a lid for opening and closing a front surface of the housing, a locking device for locking the lid in a closed position, one end of which is fixed to the housing and the other end of which is axially fixed to the lid, respectively. The lid is closed in a substantially upright position on the front surface of the housing, and the lid is rotated from the closed position toward the lower part of the housing about the shaft portion of the one end so that the lid is housed in a substantially horizontally stored position below the housing. An arm that movably supports the body and a front edge that is located between the other end of the arm and the lid and that is located on the front side of the lid in the storage position is the axis of the other end of the arm. A biasing means for tilting upward about the portion and an arm, and resisting the biasing force of the biasing means,
A cam device that keeps the lid in a substantially horizontal position at a substantially retracted position, disengages from the arm when the front edge portion of the lid is pressed, and tilts the lid by the urging force of the urging means; An opening / closing device for a lid, comprising: 2. A panel having an opening, a lid for opening and closing the opening of the panel, a strike formed on one of the panel and the lid, and another on the panel or the lid. A lid opening / closing device that is formed and that includes a locking device that engages the strike at the closed position of the lid and locks the lid at the closed position, wherein the locking device has an opening at one end. When,
A slider that is slidably held in the case, moves in and out of the opening of the case, and thrusts into the strike, spring means for urging the slider toward the opening of the case, and urging force of the spring means. A cam plate for retracting the slider against the pressure and a push button for pressing the cam plate, and the cam plate is pushed toward the slider through the push button between the slider and the cam plate. A lid opening / closing device, wherein a cam surface for retracting the slider is formed, and an elastic piece for elastically contacting the case and returning the push button is formed on the cam plate when the slider is retracted.