JPH0281039A - Lock mechanism for cover - Google Patents

Abstract

PURPOSE:To weaken the rigidity of a pawl part and to improve operability at the time of releasing locking by constituting the title mechanism so that a 2nd engaging part may bite with a 1st engaging part when the force in an opening direction is added to a cover which is locked by the 1st and the 2nd engaging parts of the pawl part. CONSTITUTION:When a battery cover 10 is made to slide in a direction shown by an arrow B, a tapered part 10B on the leading edge of the cover 10 runs onto the tapered part 12B of a pawl 12 to press the pawl part 12 downward. By closing the cover 10 after it is made to slide more in the direction of the arrow B, the leading edge of the cover 10 gets over the pawl part 12 and the pawl part 12 returns to an original position. The engaging part 10A of the cover 10 engages with the engaging part 12a of the pawl part 12 and the cover 10 is locked. Then, the moment of FXl is added to the base end part 13 of the pawl part 12 by applying external force F in the same direction as the opening direction of the cover 10 to the engaging part 12B through the engaging part 10B. The pawl part 12 is bent with the moment so that the engaging part 12B bites with the engaging part 10B. Therefore, the rigidity of the pawl part 12 can be weakened since locking is not easily released. Then, the operability of a locking releasing button 14 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a locking mechanism for a lid, and more particularly to a locking mechanism for a lid that opens and closes by sliding.

[Conventional technology]

A conventional lid of this type includes a battery lid that opens and closes a storage section that stores a battery for a camera. As shown in FIG. 4, this locking mechanism of the battery lid consists of an engaging portion 2OA of the battery lid 20 and an engaging portion 1 of an elastically extending claw portion 22.
22A to lock the battery cover 20.

On the other hand, when opening the battery lid 20, first, by pressing the lock release button 24 provided on the battery lid 20, the claw portion 22 is curved as shown by the two-dot chain line, and the engagement m2OA, 22Δ Remove the engagement between them and unlock the buffing lid 20. Subsequently, by sliding the battery cover 20 in the opening direction (in the direction of the arrow) in this unlocked state, the battery cover 20 is opened.

[Problem that the invention seeks to solve]

However, in the conventional lid locking mechanism, when a predetermined external force is applied in the opening direction of the battery lid 20 while the battery lid 20 is locked, the claw portion 22 curves in the direction of escaping from the battery lid 20. There was a drawback that 20 locks were unlocked.

On the other hand, as a preventive measure against the above drawback, there is a method of increasing the rigidity of the claw part 22 so that the claw part 22 does not easily curve due to external force in the opening direction of the battery cover 20. The disadvantage is that the operability becomes poor. That is, since the rigidity of the claw portion 22 is increased, the pressing force of the lock release button 24 must be increased when unlocking, and there is a drawback that the battery cover 20 cannot be easily unlocked.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a lid locking mechanism that has good operability when unlocking and prevents the lid from being easily opened by external force in the opening direction. do.

[Means for solving problems]

In order to achieve the above object, the present invention includes a first engaging part provided on a lid that slides with respect to a case body, and a claw part provided on the case body side, the present invention comprising: a first engaging part provided on a lid that slides with respect to a case body; The eleventh and second
In a lid locking mechanism that locks the lid by engaging an engaging portion of the claw, the proximal end of the claw is connected to the second
The first and second
When a force in the opening direction is applied to the lid locked by the engaging part, the second engaging part of the claw part bites into the first engaging part of the lid.

[Effect]

According to the present invention, the claw portion extends in substantially the same direction as the sliding direction of the lid, and is formed into a cantilever shape with a second engaging portion at the tip thereof, and the claw portion as a whole extends in the same direction as the sliding direction of the lid. It has elasticity in a direction substantially perpendicular to the sliding direction. Further, the base end portion of the claw portion is provided at a position in the lid opening direction relative to the second engaging portion provided at the tip end of the claw portion. As a result, when an external force in the opening direction is applied to the lid locked by the first engaging part of the lid and the second engaging part of the claw part, the claw part moves to the second engaging part of the claw part. is curved so as to bite into the first engaging portion of the lid.

Therefore, even if an external force is applied to the lid in the opening direction, the lid will not open easily, so the rigidity of the claw portion can be weakened, thereby improving the operability of the lock release button.

〔Example〕

Preferred embodiments of the lid locking mechanism according to the present invention will be described in detail below with reference to the accompanying drawings.

2 and 3 are perspective views of a battery lid and a battery storage section, respectively, showing an embodiment of the lid locking mechanism according to the present invention, and FIG. 1 shows the battery lid shown in FIG. 2 when it is closed. FIG. 3 is a sectional view of a main part when locked.

In these drawings, the battery cover lO is connected to the case body 3.
The battery lid 10 is opened by sliding with respect to 0, and the battery lid 10 is provided with an engaging portion 10A at its tip and a lock release button 14 behind the engaging portion 10A.

On the other hand, the claw portion 12 is provided on the case body 30 side. That is, the pawl 112 is formed into a cantilever shape that extends from the case body 30 in approximately the same direction as the sliding direction of the battery lid 10 (direction of arrows A and B in FIG. 1), and as a whole, It has elasticity in a direction substantially perpendicular to the sliding direction of the battery and the lid lO. Further, the claw portion 12 has an engaging portion 12B formed at its tip for engaging with the engaging portion 10A of the battery lid IO to lock the battery lid 10. Further, the proximal end portion 13 of the claw portion 12 is provided at a position in the opening direction of the battery lid 10 (inward in the figure) than the engaging portion 12A at the distal end thereof.

Next, the operation of the lid locking mechanism configured as described above will be explained.

First, the case where the battery cover IO is closed and locked will be described. When the battery cover 10 is slid in the direction of arrow B in FIG. 1, the tapered portion 10 at the tip of the battery cover 10
B rides on the tapered portion 12B of the claw portion 12, and the claw portion 12
Press down.

Then, when the battery cover 10 is further slid in the direction of arrow B and closed, the tip of the battery cover 10 gets over the claw 112, and the claw part 12 returns to its original position. As a result, the engaging portion 10A of the battery lid lO and the engaging portion 12A of the claw portion 12
are engaged, and the battery lid 10 is irreleasably locked.

Next, a case will be described in which a force in the opening direction is applied to the battery cover 10 which is locked as described above. Now, an external force F in the same direction as the opening direction of the battery cover 10 is applied to the engagement part 12B of the claw part 12 via the engagement fulls10B of the battery cover IO.
is applied, a moment of FXl is applied to the base end portion 13 of the claw portion 12. However, l is the length of the arm of the claw part 12 from the claw part fulcrum 13 to the point of action of F, which is perpendicular to the sliding direction of the puff tissue lid lO.

This moment causes the claw portion 12 to curve so that the engagement 812B bites into the engagement ii' [510B of the battery lid. Therefore, even if an external force in the opening direction is applied to the battery lid IO, the battery lid IO will not be unlocked easily. Thereby, the rigidity of the claw portion 12 can be weakened, so that the operability of the lock release button 14 can be improved.

Although the locking mechanism of the battery lid has been described in this embodiment, the present invention is not limited to the battery lid, but can be applied to any lid that can be opened and closed by sliding.

〔Effect of the invention〕

As explained above, according to the lid locking mechanism according to the present invention, even if an external force is applied to the lid in the opening direction, the lid is not easily unlocked (thereby, the claw portion Since the rigidity can be weakened, the operability of the lock release button can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view including a partial cross section showing an embodiment of the lid locking mechanism according to the present invention, and FIGS. 2 and 3 are views of the battery lid and battery storage section of the lid locking mechanism according to the present invention. FIG. 4 is a perspective view showing an embodiment of the present invention, and FIG. 4 is a sectional view including a partial cross section showing an embodiment of a lid locking mechanism according to a conventional example. 10... Bufft cover, IOA... Engagement part,
12...Claw portion, 12A...Engaging portion, 14...
unlock button. 13... Base end part,

Claims (1)

[Claims] (1) A first engaging portion provided on the lid that slides with respect to the case body, and a claw portion provided on the case body side that extends in substantially the same direction as the sliding direction of the lid. A lid locking mechanism comprising a cantilever-like claw portion with a second engaging portion at its tip, and locking the lid by engaging the first and second engaging portions, The proximal end portion of the claw portion is provided at a position in the lid opening direction relative to the second engaging portion at the distal end thereof, and a force in the opening direction is applied to the lid locked by the first and second engaging portions. A locking mechanism for a lid, wherein the second engaging portion of the claw portion bites into the first engaging portion of the lid.