JPH09283947A - Opening/closing mechanism with lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing mechanism with a lock in which attachment condition of a lock member is more surely maintained. SOLUTION: A battery opening 10 is provided to a case 11. The battery opening 10 is opened/closed with a battery lid 12. The battery lid 12 opens/closes the battery opening 10 by sliding along the sliding direction DR. A lock mechanism 13 regulates the sliding motion of the battery lid 12 to maintain a closed condition of the battery lid 12. In the lock mechanism 13, reciprocating movement of a lock member 23 is guided with the first and second guiding frames which face each other. An elastic regulating wall which faces the lock member 23 received by the first and second guiding frames is formed between the first and second guiding frames, and a hook piece of the lock member 23 is engaged with the elastic regulating wall, so that coming-off of the lock member is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case having an opening extending in a basic plane, and an opening formed by a sliding movement in one direction along the basic plane when entering from a crossing plane intersecting the basic plane at a predetermined angle. A cover member for opening and closing the
A lock position that establishes engagement with the cover member and a lock member that moves back and forth along an intersecting plane between the lock position that releases the engagement and the lock position, and the cover member is engaged when the cover member closes the opening. The present invention relates to an opening / closing mechanism with a lock that can regulate sliding movement of a member in an opening direction.

[0002]

2. Description of the Related Art In a portable electronic device (electrical device) such as a pager, an opening / closing mechanism with a lock of this kind is used when closing an opening for replacing a battery for supplying power. By restricting the sliding movement of the cover member in the opening direction by the lock member, it is possible to prevent the battery lid as the cover member from being accidentally detached when being carried.

For example, as disclosed in Japanese Utility Model Laid-Open No. 59-136155, a cover member for closing a battery opening as an opening extending in a basic plane has a basic wall that covers the opening and a bend from the basic wall. , And a stopper as an auxiliary wall extending in an intersecting plane orthogonal to the basic plane. The lock member mounted on the peripheral wall moves back and forth along the intersecting plane. At the lock position, the lock member engages with the stopper of the cover member to regulate the sliding movement of the cover member in the opening direction, and at the lock release position, the engagement between the lock member and the cover member is released to prevent the cover member from sliding. Sliding movement is allowed.

[0004]

In the opening / closing mechanism with a lock described in the above publication, the mounting hole formed in the case and the mounting hole formed in the locking member are inserted into the mounting hole when mounting the locking member. A pair of elastic legs is used. An outward hook piece is provided at the tip of each elastic leg, and when the lock member is attached, the elastic legs are elastically deformed in a direction in which they approach each other, and the hook piece slides on the inner wall of the mounting hole. can do. After that, the two elastic legs spread in the direction away from each other and engage with the peripheral edge of the mounting hole. When moving the lock member back and forth,
The engaged state is maintained.

In such an opening / closing mechanism with a lock, when an acting force is applied to the tips of the two elastic legs, there is a fear that the lock member may be easily separated from the case. Further, when the lock member is integrally formed of, for example, synthetic resin, the two legs project, which may complicate the shape of the mold and increase the manufacturing cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an opening / closing mechanism with a lock that can more reliably maintain the mounted state of the lock member.

[0007]

In order to achieve the above object, according to the first invention, a case having an opening extending in a basic plane, a basic wall covering the opening, and the basic wall bent from the basic wall are provided. A cover member having an auxiliary wall extending in an intersecting plane intersecting the plane at a predetermined angle, a lock position for establishing engagement with the auxiliary wall, and a lock releasing position for releasing the engagement, along the intersecting plane. A cover member that moves forward and backward, the cover member enters from the intersecting plane, opens and closes the opening by a sliding operation along one direction along the basic plane, and when the cover member closes the opening. In the opening and closing mechanism with a lock that restricts the sliding movement of the cover member in the opening direction by the engagement, the first opening is formed on the intersecting plane and receives one end of the locking member. An inner frame is formed on the intersecting plane so as to face the first guide frame and receives the other end of the lock member to cooperate with the first guide frame to advance and retreat along the intersecting plane of the lock member. A second guide frame that guides the movement,
An elastic restriction wall that faces the lock member that is passed between the first and second guide frames and is received by the first and second guide frames, and a hook piece that is provided on the lock member and that engages with the elastic restriction wall. The lock opening / closing mechanism is provided, which is characterized in that the hook piece engages with the elastic restriction wall to prevent the lock member from coming off from the first and second guide frames.

According to this structure, even if an action force acts on the lock member in the pull-out direction, the hook piece of the lock member engages with the elastic restriction wall, so that the lock member is prevented from coming off. At this time, since the elastic regulation wall is supported at both ends by the first and second guide frames, it is difficult for the elastic regulation wall to be elastically deformed by the applied force, and as a result, the lock member is reliably prevented from coming off.

According to a second aspect of the invention, in the opening / closing mechanism with lock according to the first aspect of the invention, the elastic restriction wall is attached to the hook piece when the lock member is mounted between the first and second guide frames. Is formed so as to push the lock member away from the lock member.

According to this structure, when the lock member is mounted, the elastic regulating wall can be easily elastically deformed by the action of the slope, and as a result, the lock member can be easily mounted.

Further, according to the third invention, in the opening / closing mechanism with lock according to the first or second invention, the locking position and the unlocking position of the locking member are defined between the elastic regulating wall and the locking member. A feature is that a click mechanism is provided.

According to this structure, the user can confirm whether or not the lock member surely establishes the locked position and the unlocked position by the action of the click mechanism. Further, the click mechanism can prevent the lock member from being accidentally disengaged from the lock position or the lock release position.

Further, according to a fourth aspect of the invention, in the opening / closing mechanism with lock according to the third aspect of the invention, the click mechanism is formed in the elastic regulating wall and is arranged in parallel with the diaphragm in the forward / backward direction of the lock member. A pair of position regulating recesses,
And a position control projection that is formed on the lock member and that moves over the diaphragm as the lock member advances and retracts between the lock position and the lock release position and that fits into one of the position control recesses. And

According to this structure, the click mechanism can be formed with a simple structure.

[0015]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a pager PA as a portable electronic device to which an opening / closing mechanism with a lock according to a first embodiment of the present invention is applied. The pager PA has a box-shaped synthetic resin case 11 formed with a battery opening 10 that extends into a back surface BP as a basic plane and allows a power supply battery (not shown) to be taken in and out, and the battery opening 10. A synthetic resin battery lid 12 as a cover member that opens and closes, and a lock mechanism 13 that restricts the opening operation of the battery lid 12 are provided.

The case 11 includes an upper half 11a that borders a liquid crystal screen (not shown) in front of the pager PA, and an upper half 11a.
The outer rim is detachably combined with the upper half 1
It is composed of a lower half 11b that cooperates with 1a to form a storage space. As shown in FIG. 2, the peripheral edge 1 of the upper half 11a
4 and the notch 15 formed in the lower half 11b partition the battery opening 10.

As shown in FIG. 2, the battery lid 12 has a rear surface B.
A basic wall 12a extending along P and a first peripheral surface FP serving as an intersecting plane that is bent from the basic wall 12a and intersects the back surface BP of the case 11 at a predetermined angle (in this case, approximately 90 degrees). The auxiliary wall 12b and the support wall 12c that bends from the basic wall 12a and the auxiliary wall 12b and that extends to the second peripheral surface SP as an auxiliary plane orthogonal to the back surface BP and the first peripheral surface FP are provided. The battery lid 12 enters from the first peripheral surface FP and slides along the sliding direction DR as one direction along the back surface BP to open the battery opening 1.
Open and close 0. The opened battery opening 10 leads to the battery box 16.

Referring also to FIG. 3, a first engaging groove 18 is formed on the peripheral edge of the basic wall 12a so as to engage with the projecting wall 17 which continuously projects from the lower half body 11b along the sliding direction DR. To be done. On the other hand, on the periphery of the support wall 12c of the battery lid 12,
Sliding direction D from the upper half 11a at the peripheral edge of the upper half 11a
A second engagement groove 20 that engages with an engagement wall 19 having an L-shaped cross section that continuously extends along R is formed. As is clear from FIG. 4, the sliding movement of the battery lid 12 in the sliding direction DR is performed by engaging the first engaging groove 18 with the protruding wall 17 and engaging the second engaging groove 20 with the engaging wall 19. You will be guided according to the result. Moreover, the battery lid 12 and the upper half body 11a are firmly fixed by the hooks 21 provided to face the second engagement groove 20.

The lock mechanism 13 is an auxiliary wall 1 of the battery lid 12.
The receiving groove 22 formed in 2b and the lock member 23 attached to the upper half 11a are provided. The lock member 23 can move back and forth along the first peripheral surface FP between a lock position where the engagement with the auxiliary wall 12b is established and a lock release position where the engagement is released. As shown in FIG. 5, in the upper half 11a to which the lock member 23 is attached, a lock opening 24 that opens at the first peripheral surface FP and the lock opening 2
First and second guide frames 25 and 26 facing each other are provided in the first peripheral surface FP with 4 in between. First guide frame 2
5 receives one end of the lock member 23 via the first guide groove 27 extending from the peripheral edge of the upper half body 11a in the direction orthogonal to the back surface BP. The second guide frame 26 also extends from the peripheral edge of the upper half body 11 a in parallel with the first guide groove 27.
The other end of the lock member 23 is received via 8. The first and second guide frames 25, 26 cooperate with each other to form the back BP.
The lock member 23 that moves back and forth in the direction orthogonal to is guided. An elastic restriction wall 29 is provided between the first and second guide frames 25 and 26 so as to face the back surface of the lock member 23 received by the first and second guide frames 25 and 26. The first
The second guide frames 25 and 26 and the elastic restriction wall 29 are
The upper half body 11a is integrally resin-molded.

Referring also to FIG. 6, the locking member 23 has an engaging projection 30 which enters the receiving groove 22 at the locked position.
And a hook piece 31 that engages with the elastic restriction wall 29 and prevents the lock member 23 from coming off from the first and second guide frames 25 and 26 when the lock member 23 moves in the pulling direction. When the lock member 23 is attached between the first and second guide frames 25, 26, the hook piece 31 has an elastic regulating wall 2
An inclined surface 31a is formed that pushes up 9 in a direction away from the lock member 23. As shown in FIG. 5, the hook piece 31
When the lock member 23 is mounted on the upper half body 11a, the lock member 23 moves along the hook opening 32 formed in the elastic restriction wall 29 and does not give a resistance force to the forward and backward movement of the lock member 23.

Referring again to FIG. 5, a click mechanism is provided between the elastic restriction wall 29 and the lock member 23 to define the locked position and the unlocked position of the lock member 23. This click mechanism extends from the peripheral edge of the upper half body 11a in the advancing / retreating direction of the lock member 23 and is arranged in parallel with the first position restricting recess 33 having the diaphragm 33a at the tip, and the first position restricting recess 33 with the diaphragm 33a interposed therebetween. The second position regulating recess 34 connected to the hook opening 32. At the lock position, the lock member 23 fits into the first position regulating recess 33,
The first position control projection 35 that fits into the second position control recess 34 at the lock release position, and the first position control projection 35 that moves inside the hook opening 32 when the lock member 23 moves back and forth, and the second position control projection 34 that fits into the second position control recess 34 at the lock position. The position regulating projection 36 is formed.

Next, the assembling work of the opening / closing mechanism with lock according to the first embodiment will be described. First, the upper half body 11a, the lower half body 11b, and the lock member 23 of the case 11 are produced by synthetic resin molding, and the lock member 23 is attached to the upper half body 11a. Unlike the conventional case, it is not necessary to form a pair of legs on the lock member 23, so that the mold can be simplified and the cost can be reduced.

The lock member 23 is pushed from the peripheral edge of the upper half body 11a in the direction orthogonal to the back surface BP while being guided by the first and second guide grooves 27 and 28. Then, FIG.
As shown in (a), as the lock member 23 advances,
The inclined surface 31a of the hook piece 31 pushes the elastic restriction wall 29 in a direction away from the lock member 23. The elastic restriction wall 29 is elastically deformed by the force, and regardless of the presence of the hook piece 31, the lock member 23 is allowed to enter the first and second guide grooves 27 and 28. By the function of the inclined surface 31a, the elastic regulation wall can be easily elastically deformed, and as a result, the lock member can be easily mounted. At this time, the first
The second position regulation projections 35 and 36 are guided by the first position regulation recess 33 extending from the peripheral edge of the upper half body 11a.

When the hook piece 31 enters the hook opening 32, as shown in FIG. 7B, the elastic regulating wall 29 returns to its original posture based on its own elastic force, and the mounting of the lock member 23 is completed. To do.

Once the lock member 23 is mounted on the upper half 11a, the hook piece 31 engages with the elastic restriction wall 29 so that the lock member 23 does not come off from the first and second guide frames 25 and 26. To be prevented. At this time, since both ends of the elastic restriction wall 29 are supported by the first and second guide frames 25 and 26, the elastic restriction wall 29 is less likely to be elastically deformed by the applied force, and as a result, the lock member 23 comes off. Is reliably prevented. When it is desired to remove the lock member 23, the elastic regulation wall 29 may be elastically deformed using a tool. However, it has been found that the action force that causes this kind of elastic deformation is difficult to act during general use.

Subsequently, the upper half body 11a and the lower half body 11b are assembled together while accommodating the required electronic circuits,
Complete Case 11. A battery lid 12 is attached to the completed case 11. As shown in FIG. 2, the battery lid 12 enters from the first peripheral surface FP and slides in the sliding direction D.
Attached by sliding movement along R.

Next, the operation of the lock mechanism will be described. At the unlocked position, as shown in FIG.
3 is in the most advanced position. At the unlocked position, the engagement protrusion 30 does not protrude from the peripheral edge of the upper half body 11a and does not enter the receiving groove 22. As a result, there is no effect on the sliding movement of the battery lid 12. At this time, the lower end of the lock member 23 comes into contact with the bottom surface of the upper half body 11a to prevent the lock member 23 from further advancing, while the first position restricting projection 35 of the click mechanism controls the second position restricting. By engaging with the recess 34, movement of the lock member 23 in the backward direction is also limited.

When the lock member 23 is retracted from the unlocked position to the locked position, the first position regulating projection 35 causes the diaphragm 3 to move.
It goes over 3a and fits into the first position regulating recess 33.
At the lock position, as shown in FIG.
Since 0 projects from the peripheral edge of the upper half 11a and fits into the receiving groove 22 of the battery lid 12, sliding movement of the battery lid 12 is prevented. The second position regulation projection 36 fits in the second position regulation recess 34, and the movement of the lock member 23 in the backward direction is restricted by the action of the diaphragm 33a. On the other hand, since the first position regulating projection 35 is fitted in the first position regulating recess 33, the movement of the lock member 23 in the forward direction is restricted by the action of the diaphragm 33a. If an uneven pattern 37 (see FIGS. 1 and 6B) that matches the uneven pattern of the upper half body 11a at the lock position is formed on the surface of the lock member 23, the user can visually recognize the position of the lock member 23. Not only can it be displayed, but the appearance of the case 11 can be improved.

When the lock member 23 is advanced again from the locked position to the unlocked position, the first position regulating projection 35 gets over the diaphragm 33a and fits in the second position regulating recess 34. In this way, the operation of the click mechanism ensures that the lock member 23 has entered the lock position.
It is possible to let the user feel by checking whether the is set to the unlocked position. Also, by the click mechanism,
It is possible to prevent the lock member 23 from being accidentally disengaged from the locked position or the unlocked position.

The auxiliary wall 12 with which the engaging protrusion 30 is engaged.
b may be configured as an outer wall that configures the outer appearance of the battery lid 12 as in the present embodiment, or may be separately provided inside such an outer wall.

FIG. 9 shows an opening / closing mechanism with a lock according to a second embodiment of the present invention. The second embodiment is characterized in that the click mechanism uses a single position restricting projection 40, and the hook piece 31 has the function of the second position restricting projection 36 of the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

In the second embodiment, in the lock position,
The position regulation projection 40 fits into the first position regulation recess 33, and the movement of the lock member 23 in the forward direction is restricted by the action of the diaphragm 33a. At this time, the hook piece 31 engages with the elastic restriction wall 29, and the movement of the lock member 23 in the backward direction is completely blocked. On the other hand, in the unlocked position, the position regulating protrusion 40 has the circular second position regulating concave portion 41.
The engagement of the lock member 23 restricts the movement of the lock member 23 in either direction. This second
According to the embodiment, the structure of the lock member 23 is simplified,
While the cost can be reduced, the function of the click mechanism can be reliably ensured.

[0034]

As described above, according to the present invention, there is provided an opening / closing mechanism with a lock capable of reliably preventing the lock member from coming off and further reliably preventing the lock member from being lost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a pager to which an opening / closing mechanism with a lock according to a first embodiment of the present invention is applied.

FIG. 2 is a perspective view showing a state in which a battery lid is removed.

FIG. 3 is a plan view showing the back surface of the battery lid.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is an exploded perspective view showing a configuration of a lock mechanism.

6A and 6B are a plan view showing a rear surface and a plan view showing a front surface of a lock member.

7A and 7B are a cross-sectional view showing (a) an attaching operation of a lock member and (b) a cross-sectional view showing a removal preventing action.

8A is a sectional view showing the lock member in an unlocked position, and FIG. 8B is a sectional view showing the lock member in a locked position.

FIG. 9 is an exploded perspective view showing a configuration of a click mechanism in an opening / closing mechanism with a lock according to a second embodiment of the present invention.

[Explanation of symbols]

10 Battery Opening as Opening, 11 Case, 12 Battery Cover as Cover Member, 12a Basic Wall, 12b Auxiliary Wall, 23 Lock Member, 25 First Guide Frame, 26 Second Guide Frame, 29 Elasticity Control Wall, 30 Engagement Protrusion, 31
Hook piece, 31a Slope, 33 First position regulating recess constituting click mechanism, 33a Aperture, 34 Second position regulating recess constituting click mechanism, 35 First position regulating protrusion constituting click mechanism, 36 configuring click mechanism The second position regulation protrusion, the position regulation protrusion constituting the 40-click mechanism, the back surface as the BP basic plane, and the first peripheral surface as the FP intersecting plane.

Claims (4)

[Claims] 1. A cover member having a case having an opening extending in a basic plane, a basic wall covering the opening, and an auxiliary wall bending from the basic wall and extending in an intersecting plane intersecting the basic plane at a predetermined angle. A lock member that moves forward and backward along the intersecting plane between a locked position that establishes engagement with the auxiliary wall and an unlocked position that releases the engagement, and the cover member enters from the intersecting plane. With a lock that opens and closes the opening by a sliding operation along one direction along the basic plane and restricts the sliding movement of the cover member in the opening direction by the engagement when the cover member closes the opening. In the opening / closing mechanism, a first guide frame which is formed on the intersecting plane and receives one end of the locking member, and which is formed on the intersecting plane facing the first guide frame, The second guide frame that receives the other end of the lock member to cooperate with the first guide frame to guide the forward and backward movement of the lock member along the intersecting plane, and the second guide frame between the first and second guide frames. And a hook piece provided on the lock member and engaged with the elastic restriction wall. The hook piece serves as the elastic restriction wall. An opening / closing mechanism with a lock, characterized in that the locking member is prevented from coming off from the first and second guide frames by engaging with each other. 2. The opening / closing mechanism with a lock according to claim 1, wherein when the lock member is mounted between the first and second guide frames, the elastic restriction wall is separated from the lock member on the hook piece. An opening / closing mechanism with a lock, characterized in that a slope is formed that pushes up in the direction of 3. The opening / closing mechanism with lock according to claim 1, further comprising a click mechanism provided between the elastic restriction wall and the lock member for defining the lock position and the unlock position of the lock member. An opening and closing mechanism with a lock. 4. The opening / closing mechanism with a lock according to claim 3, wherein the click mechanism is formed on the elastic restriction wall and is arranged in parallel in a direction in which the lock member advances and retracts with a diaphragm interposed therebetween. And formed on the lock member,
An opening / closing mechanism with a lock, comprising: a position control projection that goes over the diaphragm and fits into one of the position control recesses as the lock member advances and retracts between the locked position and the unlocked position.