JP2002349113A - Lid opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid opening/closing device available at reduced costs by making the number of part items much smaller than those for conventional devices. SOLUTION: The device includes a lid that can be opened and closed relative to a body, and a spring member for biasing the lid in opening direction. A lock means for locking the lid closed is provided integrally with the spring member. The lock means engages an engagement member provided on the lid, thereby locking the lid. When locked in a closed position the lid is pressed toward the body to disengage the lock means from the engagement member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover opening / closing device, and more particularly, to a cover opening / closing device provided with a mechanism for locking a cover to be opened and closed when the cover is closed.

[0002]

2. Description of the Related Art Conventionally, in a lid opening / closing device which is opened and closed by rotating the lid with respect to a main body, a hook integrally provided on the lid is used as a mechanism for locking the lid. A fixed holder for locking the hook, a fixed holder shaft provided integrally with the main body or as a separate component, a spring for regulating the operation of the fixed holder, and the like are used.

FIG. 4 is a right side vertical sectional view showing a schematic structure of such a conventional lid opening / closing device. In the figure,
101 is a main body, 102 is a lid, 103 is a torsion spring, 104 is a hook fixing holder, and 105 is a holder spring. A substantially fan-shaped hinge portion 102d is provided at a rear portion of the lid 2, and is rotatably fitted to a shaft 101a provided on the main body 101 side. In front of the fitting portion with the shaft 101a on the hinge portion 102d, a shaft 102
e is provided around which the torsion spring 103 is wound.

The torsion spring 103 pushes the lid 102 against the main body 101 when one arm 103a presses the lower surface of the lid 2 upward and the other arm 103b presses the upper surface of the concave portion 101b of the main body 101 downward. In the opening direction, that is, clockwise in the figure. Lid 102
A hook fixing holder 104 is provided at a front portion of the concave portion 101b of the main body 101 into which the main body 101 fits. A holder spring 105 is wound around the shaft 101c, whereby the hook fixing holder 104 is urged clockwise in the figure.

When the lid 102 is closed, as shown by a solid line in FIG.
The more protruding hook 102b is used as the hook fixing holder 1.
The cover lock state is established by engaging with the holder portion 104c provided on the upper portion of the cover 04. When the lid 102 is opened, as shown by a broken line in FIG.
4 rotates clockwise, the hook 102b separates from the holder 104c, and the lid 102 rotates clockwise. And
The leg portion 102c at the lower end of the hinge portion 102d contacts the contact portion 101d on the lower surface of the rear end of the concave portion 101b of the main body 101, and the rotation of the lid 102 stops at this position.

FIG. 5 is a detailed view of a lid lock portion of the above-mentioned conventional lid opening and closing device, and shows a state where the lid 102 is closed. As described above, the hook fixing holder 104
Is rotatably fitted at its lower part to a shaft 101c provided on the main body 101 side. In addition, around the axis 101c,
The holder spring 105 is wound. And
One arm 105a of the holder spring 105 is
The other arm 105b is engaged with a hook portion 101e provided on the back surface of the concave portion 101b of the main body 101.
Hook section 1 provided on front of hook fixing holder 104
04b. As a result, the hook fixing holder 104 is urged clockwise in the drawing.

First, when the lid 102 is open, as shown by a broken line in FIG. 1, the hook fixing holder 104 is urged clockwise in FIG. Contact portion 1 provided on the back surface of 101b
01f and is in a locked state. Here, when the lid 102 is closed, the hook fixing holder 1 is closed.
04 is attached to the arc-shaped guide portion 104a on the top surface.
02b contacts.

When the lid 102 is further pushed down, the guide portion 104a is pressed against the hook 102b while being in contact with the hook 102b, and the hook fixing holder 104 rotates counterclockwise in the figure. Then, the hook 102b passes through the rear end of the guide portion 104a, and the contact is released. This state is indicated by a dashed line in FIG. Here, hook 102b
Are in contact with the rear surface of the holder portion 104c.

When the lid 102 is further pushed down, the contact between the hook 102b and the holder 104c is released, and the lid 102 is in a state shown by a two-dot chain line in FIG. At this time,
The hook fixing holder 104 rotates clockwise in the figure, and the mountain-shaped lower guide 104d provided below the holder portion 104c contacts the hook 102b. And lid 1
02 stops to be pressed, the torsion spring 103
, The lid 102 moves in the opening direction. Then, the hook fixing holder 104 further rotates clockwise in the figure, and the hook 102b comes into contact with the concave portion on the lower surface of the holder part 104c, and the lid is locked as shown by the solid line in the figure.

FIG. 6 is a detailed view of a lid lock portion of the conventional lid opening and closing device, and shows a state where the lid 102 is opened. First, when the lid 102 is closed, as described above, the hook 102b comes into contact with the concave portion on the lower surface of the holder portion 104c, and the lid is locked as shown by the solid line in FIG. Here, when this is pushed down to open the lid 102, the hook 102 b and the holder 104
c, the hook fixing holder 104 rotates clockwise in the figure, and the lid lock is released as shown by the two-dot chain line in the figure. Then, when the pressing down of the lid 102 stops, the action of the torsion spring 103 causes
The lid 102 opens. Thus, a series of lid opening / closing operations is completed.

[0011]

However, in the above-described conventional configuration, the number of parts is large, and it is difficult to reduce the cost. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lid opening / closing device capable of significantly reducing the number of components compared to the related art and reducing costs.

[0012]

In order to achieve the above object, according to the present invention, there is provided a lid which can be opened and closed with respect to a main body, and a spring member which biases the lid in an opening direction. A lock means for locking the body when the body is closed is provided integrally with the spring member.

[0013] Further, the locking means locks the lid by engaging with an engaging member provided on the lid.

Then, when the lid is closed and locked, the engagement is released by pushing the lid toward the main body.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right side vertical sectional view showing a schematic configuration of a lid opening / closing device according to an embodiment of the present invention. In the figure, 1 is a main body, 2 is a lid, and 3 is a torsion spring. A substantially fan-shaped hinge portion 2a is provided at a rear portion of the lid 2, and is rotatably fitted to a shaft 1a provided on the main body 1 side. A shaft 2b is provided on the hinge 2a in front of a fitting portion with the shaft 1a, and a torsion spring 3 is wound therearound.

The torsion spring 3 is in a state in which one arm 3a presses the lower surface of the lid 2 upward, and the other arm 3b is a flat plate provided alternately near the concave portion 1b of the main body 1. In this state, the main body 1 is pressed downward while being held by the holding portion 1c. Thus, the torsion spring 3 urges the lid 2 in a direction in which the lid 2 is opened with respect to the main body 1, that is, clockwise in the drawing.

A shaft 1e is provided at the front of the concave portion 1b of the main body 1 into which the lid 2 fits. The front portion of the arm 3b of the torsion spring 3 is wound around the shaft 1e, and further extends obliquely upward as a relatively short arm 3c. The distal end of the arm 3c is bent in a direction substantially perpendicular to the plane of the drawing, thereby forming a hook 5. On the other hand, a hook fixing holder 4 that engages with the hook 5 extends downward from the front of the lower surface of the lid 2.

When the lid 2 is closed, the hook 5 is engaged with the holder 4b at the lower end of the hook fixing holder 4 as shown by a solid line in FIG.
When the lid 2 is opened, the hook 5 separates from the holder 4b, and the lid 2 rotates clockwise, as indicated by the broken line in FIG. The leg 2c at the lower end of the hinge 2a is
(b) Abuts against the contact portion 1d on the lower surface of the rear end, and the rotation of the lid 2 stops at this position.

FIG. 2 is a detailed view of the lid lock portion of the lid opening and closing device according to the present embodiment, and shows a state where the lid 2 is closed. First, when the lid 2 is closed from the open state, the hook 5 comes into contact with the arc-shaped guide portion 4a on the lower surface of the hook fixing holder 4 as shown by a broken line in FIG. When the lid 2 is further depressed, the hook 5 is pushed by the guide part 4a, and the arm 3c is moved along the shaft 1e while being pushed along the guide part 4a.
Rotate counterclockwise around the figure. And hook 5
Passes through the front end of the guide portion 4a, and the contact is released. This state is indicated by a dashed line in FIG. Here, the hook 5 is in contact with the front surface of the holder 4b.

When the lid 2 is further pushed down, the hook 5
The arm 3c is released from contact with the front surface of the holder portion 4b, the arm 3c rotates clockwise around the shaft 1e by elasticity, and the hook 5 contacts the vertical guide 4d on the upper side of the holder portion 4b. Then, when the pressing down of the lid 2 stops, the lid 2 moves in the opening direction by the action of the torsion spring 3. Then, the hook 5 is moved to the side guide 4c on the upper side of the holder 4b.
And the lid is locked as shown by the solid line in FIG.

FIG. 3 is a detailed view of a lid lock portion of the lid opening and closing device of the present embodiment, and shows a state where the lid 2 is opened. First, when the lid 2 is closed, as described above, the hook 5 comes into contact with the vertical guide 4d and the horizontal guide 4c on the upper side of the holder 4b, and the lid is locked as shown by the solid line in FIG. Has become.

Here, as shown by a two-dot chain line in FIG.
Is disengaged from the holder 4b while being guided by the vertical guide 4d and the triangular upper guide provided above the holder 4b on the hook fixing holder 4. At this time, the arm 3c rotates clockwise in the figure due to elasticity, and the lid lock is released as shown by the broken line in the figure.
Then, when the pressing down of the lid 2 stops, the lid 2 is opened by the action of the torsion spring 3. Thus, a series of lid opening / closing operations is completed.

The spring member referred to in the claims is
The locking means corresponds to the hook, and the engaging member corresponds to the hook fixing holder, respectively.

[0024]

As described above, according to the present invention,
It is possible to provide a lid opening / closing device in which the number of parts is significantly reduced as compared with the related art, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a right side longitudinal sectional view showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a detailed view of a lid lock section of the embodiment (a state when the lid is closed).

FIG. 3 is a detailed view of a lid lock portion of the embodiment (a state when the lid is opened).

FIG. 4 is a right side vertical sectional view showing a schematic configuration of a conventional lid opening / closing device.

FIG. 5 is a detailed view of a lid lock portion of the conventional lid opening / closing device (when the lid is closed).

FIG. 6 is a detailed view of a lid lock portion of the conventional lid opening / closing device (when the lid is opened).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Lid 3 Torsion spring 4 Hook fixing holder 5 Hook

Claims (3)

[Claims] A cover that can be opened and closed with respect to the main body; and a spring member that urges the cover in a direction in which the cover is opened, and a lock unit that locks the cover when the cover is closed. A lid opening / closing device, which is provided integrally with the lid. 2. The lid opening / closing device according to claim 1, wherein the locking means locks the lid by engaging with an engaging member provided on the lid. 3. The lid according to claim 2, wherein, when the lid is closed and locked, the engagement is released by pushing the lid toward the main body. Switchgear.