JP4705940B2 - Housing connection mechanism - Google Patents

Description

The present invention relates to a housing connection mechanism, and more particularly to a housing connection mechanism used when a plurality of housings are connected with their connection surfaces facing each other.

Conventionally, electric devices such as programmable controllers and sequencers are often used by combining the same or different types of components as appropriate. For this reason, the shape of the housing for housing each electric device is shared, and a plurality of housings are used. There has been proposed a case coupling structure that can be coupled and connected in any combination (see Patent Document 1 below).

FIG. 13 is a perspective view illustrating a configuration of an inner wall of a connection surface in a case to which the case connection structure disclosed in Patent Document 1 is applied.
In the figure, reference numeral 101 denotes a casing. On the inner wall of the connecting surface 101a of the casing 101, two guide bodies 108a and 108b and four holding bodies 109a to 109d are formed. With the holding bodies 109a to 109d, the hook members 106 are engaged in the engagement positions of the claws 107a and 107b (see FIG. 14) formed on the hook member 106 in one direction within a plane parallel to the connection surface 101a of the housing 101. It is held so as to be reciprocally movable in a section corresponding to the release position.

On each of the two side surfaces parallel to the moving direction of the hook member 106, spring bodies 161a,
161b is integrally formed. The spring bodies 161a and 161b are in contact with the inclined surfaces of the guide bodies 108a and 108b at the open ends. In addition, recesses 162a and 162b into which the guide bodies 108a and 108b are fitted are formed on the side surfaces of the spring bodies 161a and 161b.

14 (a) to 14 (d) are plan cross-sectional views showing the main parts for explaining the engaged state of the claws 107a and 107b in the housing connection structure. FIGS. 15A to 15D are views showing an operation state of the hook member 106 at the time of connecting the cases to which the case connecting structure is applied, and FIGS. 14A to 14D are respectively shown. It corresponds to the state shown in

Claw bodies 107a and 107b formed on the hook member 106 supported in the housing 101
An inclined surface 171 is formed. The connecting surface 101a of the housing 101 and the other housing 201
As shown in FIG. 14A, the nail bodies 107a, 10b
The inclined surface 171 of 7b is one edge 241 of the openings 204a and 204b of the other casing 201.
Opposite to.

In this state, when the connecting surface 101a of the housing 101 and the connecting surface 201b of the other housing 201 are brought closer to each other, the inclined surfaces 17 of the claws 107a and 107b as shown in FIG.
1 contacts the edge 241 of the openings 204a and 204b of the other casing 201. At this time, a pressing force in a direction orthogonal to the contact direction is applied by the inclined surfaces 171 of the claw bodies 107a and 107b, and the claw bodies 107a and 107b are pressed together with the hook member 106 in a direction orthogonal to the contact direction.

Further, when the connecting surface 101a of the housing 101 and the connecting surface 201b of the housing 201 are brought closer to each other, the claws 107a and 107b are brought into contact with the inner peripheral surface of one of the openings 204a and 204b. Intrudes into the housing 201. The hook member 106 on which the claws 107a and 107b are formed can reciprocate in one direction (arrow X and Y directions) included in a plane parallel to the connection surface 101a on the inner wall of the connection surface 101a of the housing 101. And is urged in the Y direction by the elastic force generated in the guide bodies 108a and 108b (FIGS. 13 and 15).

For this reason, the nail bodies 107a and 107b, as shown in FIG.
After passing through 204b, the claw bodies 107a, 107 are moved in the direction of the arrow Y inside the housing 101 and the connecting surface 101a of the housing 101 is in close contact with the connecting surface 201b of the housing 201.
b is engaged with the openings 204a and 204b. By the engagement of the claws 107a and 107b with the openings 204a and 204b, the connected state of the housing 101 and the housing 201 is maintained.

When the casing 101 and the casing 201 connected in this way are separated, the hook members 106 and the claw bodies 107a and 107b are opened at the openings 204a and 204b as shown in FIG. Is moved in the direction of arrow X to a position where it does not abut against the inner peripheral surface. Thereby, the engagement state of the claws 107a and 107b with respect to the openings 204a and 204b is released,
The housing 101 or the housing 201 can be moved in a direction in which the connecting surface 101a and the connecting surface 201b are separated from each other.

Further, as shown in FIG. 15, the hook member 106 is located at an engagement position where one end 106 a is exposed to the outside of the housing 101 before the connection work of the housing 101 and the housing 201 is started ( The state of FIG. 15A) moves to the retracted position immediately after the connection work of the casing 101 and the casing 201 is started and immediately before completion (state of FIG. 15B). And the housing 1
When the connection work between 01 and the housing 201 is completed, the state returns to the engaged position again (state shown in FIG. 15C).
Furthermore, it moves to the release position when the casing 101 and the casing 201 are separated (FIG. 15D).
State).

However, in the above-described conventional case coupling structure, the hook member 106 is configured to freely reciprocate while being accompanied by the elastic force of the spring bodies 161a and 161b during the period from the engagement position to the release position via the retracted position. Therefore, in the state where the housing 101 and the housing 201 are connected (the state shown in FIGS. 14C and 15C), the other end 106a of the hook member 106 is caused by an impact such as dropping. On the other hand, when a force is applied in the direction in which the hook member 106 is pressed into the housing 101, the open ends of the spring bodies 161a and 161b are elastically displaced in a form along the inclined surfaces of the guide bodies 108a and 108b. However, the spring bodies 161a and 161b due to this displacement
If the elastic force exceeds the elastic force, the recesses 162a and 162b of the spring bodies 161a and 161b are fitted into the guide bodies 108a and 108b, and the hook member 106 moves from the engagement position to the release position via the retracted position. Thus, there is a problem that the housing 101 and the housing 201 may be detached.
JP 2001-31477 A

Means for solving the problems and their effects

The present invention has been made in view of the above problems, and even when an impact is applied from the outside due to dropping or the like, it is possible to reliably prevent the connected casings from coming off, while the connected casings. It is an object of the present invention to provide a housing connection mechanism that can easily perform body separation work and can achieve both improvement in impact resistance in the state of connection of the housing and simplicity of the housing separation work. It is said.

In order to achieve the above object, a housing connection mechanism (1) according to the present invention includes a housing, one end side exposed from the housing, and the other end formed on the inner wall portion of the connecting surface of the housing. An auxiliary hook member supported so as to be able to advance and retreat along one guide body, and a hole formed on one end side of the auxiliary hook member so as to be latchable with the other end side of the auxiliary hook member, and formed in the connecting surface of the housing A hook member formed with a connecting claw body projecting from the hook and a first spring body extended in a form that can be locked with the other end side of the auxiliary hook member. In conjunction with the movement of the hook member into the housing, the hook member of the hook member moves to the engagement position, the first spring body is elastically displaced, and the tip portion thereof is the auxiliary hook member. And is locked to a spring body locking portion formed at the tip of the other end side of the first, and the first While being in contact with the distal end portion of the id body, the distal end portion of the first spring body and the auxiliary hook member are interlocked with the operation of retracting the auxiliary hook member that has entered the housing. The locked state with the spring body locking portion and the contact state between the distal end portion of the first spring body and the distal end portion of the first guide body are released, and the claw body of the hook member reaches the release position. It is characterized by being configured to move.

According to the housing coupling mechanism (1), the hook member moves to the engagement position in conjunction with the operation of the auxiliary hook member entering the housing, and the first spring is moved. The body is elastically displaced, and the distal end of the body is latched by a spring body latching portion formed at the distal end of the other end of the auxiliary hook member, and abuts against the distal end of the first guide body. Therefore, the engagement state between the tip of the first spring body and the spring body locking portion of the auxiliary hook member, and the tip of the first spring body and the tip of the first guide body The movement of the hook member is restricted by the contact state with the portion against the force that moves the claw body to the release position side. Therefore, even when the force that moves the claw body to the release position side due to an impact from the outside such as dropping acts on the housing or the claw body, the movement of the hook member can be restricted. Further, it is possible to prevent the claw body from being disengaged from the engagement position, and it is possible to achieve a connected state of the casing having excellent impact resistance.

Further, by a simple operation of retracting the auxiliary hook member that has entered the housing, the engagement state between the distal end portion of the first spring body and the spring body engagement portion of the auxiliary hook member, and The contact state between the distal end portion of the first spring body and the distal end portion of the first guide body is released, and the claw body can be moved to the release position. It is possible to realize a housing connection mechanism that can be easily performed and can achieve both improvement in impact resistance in the connected state of the housings and ease of separation work of the connected housings.

Further, the housing connecting mechanism (2) according to the present invention is the above-described first housing connecting mechanism (1).
The guide body is formed so as to sandwich both side portions of the auxiliary hook member, each tip portion is provided with a tapered portion inclined outward, and the spring body locking portion of the auxiliary hook member is provided at the other end. A locking surface that is inclined outward, and the tip of the first spring body is engaged with the first contact surface for contacting the tapered portion and the spring body locking portion. A second abutment surface for abutting against the stop surface, and when the claw body is located at the engagement position, the first spring body is elastically displaced and the tip of the first end portion is 2 abutment surfaces are engaged with the engagement surface of the spring body engagement portion, and the first abutment surface of the first spring body distal end portion is a tapered portion of the first guide body. It is characterized by being in a state of being in contact with

According to the case coupling mechanism (2), when the claw body is located at the engaging position, the first
In a state where the spring body is elastically displaced, the second abutting surface of the tip end portion is locked to the locking surface of the spring body locking portion, and the first spring body tip end portion is first. Since the abutment surface of the first guide body is in contact with the tapered portion of the first guide body, the force that moves the claw body to the release position side due to an impact such as a drop is applied to the housing and the claw body. In this case, a force to move inwardly (that is, on the release position side) along the tapered portion of the first guide body acts on the distal end portion of the first spring body, and the second spring body A force that presses the locking surface of the spring body locking portion acts on the contact surface.

Since the locking surface of the spring body locking portion has a shape inclined outward toward the other end, the pressing force from the second contact surface causes the spring body locking portion to A force for moving the auxiliary hook member to the other end side (that is, the engagement position side) acts on the locking surface. As a result, the movement of the auxiliary hook member to the release position side can be restricted, the movement of the hook member can be restricted, the disengagement of the claw body from the engagement position can be prevented, and the impact resistance It can be set as the connection state of the housing | casing excellent in.

In addition, since the tapered portion is formed at the tip of the first guide body, and the locking surface of the spring body locking portion is inclined outward toward the other end, the housing The operation of moving the hook member to the release position by retracting the auxiliary hook member that has entered the body can be performed reliably and smoothly, and the workability when separating the housing can be improved.

Further, the housing connecting mechanism (3) according to the present invention is the above-described first housing connecting mechanism (1).
The guide body is formed in such a manner as to sandwich both side portions of the auxiliary hook member, and the front end portion of the first spring body is in contact with the end surface of the first guide body, A protrusion formed inward along the contact surface, the spring body locking portion of the auxiliary hook member includes a recess for locking the protrusion, and the claw body is in the engagement position. In the state where the first spring body is elastically displaced, the convex part of the tip part is locked to the concave part of the spring body locking part,
In addition, the contact surface of the tip end portion of the first spring body is in contact with the end surface of the first guide body.

According to the housing coupling mechanism (3), when the claw body is located at the engaging position, the first
In the state in which the spring body is elastically displaced, the convex portion of the tip portion is locked to the concave portion of the spring body locking portion, and the contact surface of the first spring body tip portion is the first The hook member is in contact with the end face of the guide body even when a force that moves the claw body to the release position side due to an impact such as dropping acts on the claw body. Can be almost completely prevented from moving to the release position side, and can be reliably prevented from coming off from the engagement position of the claw body, and the casing is connected with excellent shock resistance. Can do.

Further, in the case coupling mechanism (4) according to the present invention, in any one of the case coupling mechanisms (1) to (3), a second spring body having a convex portion extends from both sides of the hook member. And the second
The protruding portion of the spring body is fitted into a bent guide portion formed in the housing.

According to the housing coupling mechanism (4), the second spring body having the convex portion is extended from both side portions of the hook member, and the convex portion of the second spring body is formed on the housing. Since it is fitted in the bent guide part, it is possible to prevent the hook member and the auxiliary hook member from rattling when the hook member is located at the release position. Further, when the hook member is moved from the release position to the engagement position, a pressing force can be applied to the release position side. On the other hand, when the hook member is moved from the engagement position to the release position, the engagement position A pressing force can be applied to the side, the amount of play when the hook member is located at the engagement position or the release position can be reduced, and the elastic force of the second spring body is utilized. A movement restriction effect can be obtained.

Further, in the case coupling mechanism (5) according to the present invention, in any one of the case coupling mechanisms (1) to (4), the first spring body forms a bent portion from both sides of the hook member. And a second guide body that supports the bent portion of the first spring body is formed on the inner wall portion of the connecting surface of the housing. It is a feature.

According to the case coupling mechanism (5), the second guide body can further stabilize the form of elastic displacement of the first spring body, and the first spring body and the auxiliary hook member. And the movement regulation by the contact state between the first spring body and the first guide body can be made more reliable, and the supporting state of the hook member can be stabilized. Can do.

Further, the housing connection mechanism (6) according to the present invention is the housing connection mechanism (1) to (5), wherein the inner wall portion of the connection surface of the housing is on the other end side of the hook member. The insertion part for inserting and supporting is formed, It is characterized by the above-mentioned.

According to the case coupling mechanism (6), the other end side of the hook member can be supported by the insertion portion formed on the inner wall portion of the connection surface of the case, and the inside of the case is The effect of preventing the hook member from rattling can be enhanced.

Further, in the case coupling mechanism (7) according to the present invention, in any one of the case coupling mechanisms (1) to (6), the claw body is formed on a portion of the auxiliary hook member exposed from the case. The mark which shows the state located in the engagement position, and / or the mark which shows the state which the said nail | claw body is located in the cancellation | release position are provided.

According to the housing coupling mechanism (7), the mark provided on the auxiliary hook member indicating the state where the claw body is located at the engagement position and / or the claw body is located at the release position. It is possible to easily grasp whether the claw body is located at the engagement position or the claw body is located at the release position based on the mark indicating the state of the movement.

Hereinafter, embodiments of a housing connecting mechanism according to the present invention will be described with reference to the drawings. FIG.
FIG. 6 is a perspective view schematically showing an inner wall of a connection surface of a case where the case connection mechanism according to the embodiment (1) is adopted, and FIG. The state when the connection state with the body is released is shown. FIG. 2 is a perspective view schematically showing the inner wall (a) of the connection surface of the housing and the connection surface (b) of the housing when connected to another housing.

FIG. 3 shows an exploded perspective view of the housing (auxiliary hook member) and the plane (inner wall surface side) of the housing constituting the housing coupling mechanism according to the embodiment (1), and FIG. Embodiment (1
The housing | casing which comprises the housing | casing connection mechanism which concerns on ()), an auxiliary | assistant hook member, and the back surface (connection surface side) exploded perspective view of a hook member are shown.

In the figure, reference numeral 1 denotes a bottom cover that constitutes a housing in which an electronic device (not shown) or the like is housed. The connecting surface 1a of the bottom cover 1 has columnar protrusions 2a to 2d, a frame-shaped protrusion 3, And the exposure holes 4a and 4b for projecting the nail | claw bodies 21a and 21b formed in the hook member 20 are formed. The columnar protrusions 2a to 2d and the frame-shaped protrusion 3 are respectively fitted into a columnar recess and a frame-shaped recess (not shown) formed on the connecting surface of the other casing (not shown) to be connected,
Positioning with the other housing is possible. Further, an insertion hole 5 for exposing one end side of the auxiliary hook member 10 is formed near the connection surface 1a of the one side surface 1b orthogonal to the connection surface 1a of the bottom cover 1.

The inner wall surface 1c of the connecting surface 1a of the bottom cover 1 includes first guide bodies 6a and 6b, second guide bodies 7a and 7b, holding bodies 8a to 8d, a holding frame 8e (insertion portion), and the like. Is formed. Also, the inner wall 1c of the bottom cover 1 has an auxiliary hook member 10 whose one end is exposed from the insertion hole 5 and whose other end is supported so as to advance and retreat along the first guide bodies 6a and 6b. The other end side of the hook member 10 and the hook member 20 supported so that latching are possible are arrange | positioned. By the holding bodies 8a to 8d, the hook member 20 is connected to the inner wall surface 1c of the bottom cover 1 by 1
It is hold | maintained so that a reciprocation is possible in the area corresponding to the cancellation | release position and engagement position of nail | claw body 21a, 21b in a direction.

The first guide bodies 6a and 6b are arranged on the side surface 1 from both sides of the insertion hole 5 formed in the bottom cover 1.
It is formed in a direction substantially perpendicular to b, and a tapered portion 60a that is inclined outward is formed at the tip portion thereof. The auxiliary hook member 10 and the first spring body 23 of the hook member 20 are held by the first guide bodies 6a and 6b so as to be able to advance and retreat, and the claw bodies 21a and 21b of the hook member 20 are positioned at the engagement positions. The first guide bodies 6a and 6a (see FIG. 2)
The tip end portion 25 of the first spring body 23 comes into contact with the tapered portion 60a of b.

Further, the claw bodies 21a, 21b are provided on the inner portions of the first guide bodies 6a, 6b near the insertion hole 5.
A convex portion (small convex portion) 60b (see FIG. 3) is formed to be engaged with the auxiliary hook member 10 when the auxiliary hook member 10 is moved to the release position. Further, the first guide body 6
A convex portion (small convexity) for engaging with the auxiliary hook member 10 when the auxiliary hook member 10 is moved to the engagement position of the claws 21a, 21b is provided on the inner part of the front side of the tapered portion 60a of a, 6b. Part) 60c (see FIG. 3) is formed.

The second guide bodies 7a and 7b are provided when the claw bodies 21a and 21b are located at the engagement positions (
2), the bent portion of the first spring body 23 of the hook member 20 is formed by the second guide bodies 7a and 7b so as to surround the outer portion of the bent portion 24 of the first spring body 23. The vicinity of 24 is supported, and the form of elastic displacement of the first spring body 23 is more stable.

The holding bodies 8a and 8b and the holding bodies 8c and 8d are formed at positions facing each other across the hook member 20 so as to be engaged with both sides of the hook member 20, and their upper end portions are bent inward. It is formed in a claw shape and is locked to the side portion of the hook member 20.
Further, the holding frame 8e is formed in a reverse concave shape so as to partially cover the other end portion of the hook member 20 as viewed in the insertion direction, and the other end portion of the hook member 20 is inserted and supported. It has come to be.

The auxiliary hook member 10 has a substantially flat plate shape, and extends in a substantially vertical direction from the exposed piece 11 exposed from the insertion hole 5 of the bottom cover 1 and both end portions of one side surface of the exposed piece 11 on the housing insertion side. And a pair of holding pieces 12 formed.

A bent hook portion 11 a is formed at the tip of the exposed piece 11, and the auxiliary hook member 10 is pushed into the engaging positions for engaging the claws 21 a and 21 b on both sides of the exposed piece 11. There are provided an engagement position mark 13 indicating a state of being engaged and a release position mark 14 indicating that the auxiliary hook member 20 is pulled out to a release position where the engagement state of the claws 21a and 21b is released. The form of these position marks 13 and 14 is not particularly limited as long as they are easy to visually confirm and do not hinder the forward / backward movement, such as those in which concave portions or convex portions are formed on the exposed piece 11, marking by colored printing, stickers, etc. Can be employed.

Further, as shown in FIGS. 3 and 4, a locking piece 12 a for supporting the one end 22 of the hook member 20 with the holding piece 12 is provided on the inner side portion of the auxiliary hook member 10 on the distal end side of each holding piece 12. Is formed with a step, and the first guide bodies 6a, 6 are formed on the outer portion of each holding piece 12.
The outer convex portion 12b and the outer convex portion 12 are made to abut against the inner side surface of b so as to be able to advance and retreat, and the auxiliary hook member 10 is locked to the insertion hole 5 to prevent the bottom cover 1 from coming off.
A spring body locking portion 12d having a locking surface 12c that is gently inclined outward from b to the tip portion and a tip contact surface 12e are formed.

The hook member 20 is formed in a length shape that can be accommodated in the bottom cover 1, and is a connecting claw that protrudes from the exposure holes 4 a and 4 b in the vicinity of both ends of the surface of the bottom cover 1 that faces the inner wall surface 1 c. 21a and 21b are erected.

One end portion 22 of the hook member 20 is formed in a substantially rectangular shape so as to be sandwiched between the holding pieces 12 of the auxiliary hook member 10, and the auxiliary hook is provided on both side portions of the one end portion 22 on the claw body 21 a forming surface side. A step portion 22a is formed to be engaged with the engaging piece 12a of the holding piece 12 of the member 10.

Further, a pair of first spring bodies 2 is formed from both side portions of the hook member 20 parallel to the moving direction.
3 and a pair of second spring bodies 26 are extended. The first spring body 23 extends substantially parallel to both side surfaces of the hook member 20 toward the side of the auxiliary hook member 10 via the bent portion 24, and the distal end portion 25 is positioned near the front of the claw body 21a. It is formed to do.

The distal end portion 25 of the first spring body 23 includes three inclined surfaces, that is, a first abutting surface 25a, a second abutting surface 25b, and a third abutting surface 25c. It is formed in a V shape. The first abutment surface 25a abuts on the inclined surfaces of the tapered portions 60a of the first guide bodies 6a and 6b when the claw bodies 21a and 21b are located at the engagement positions (see FIG. 2). Is formed. The second contact surface 25b is locked to the spring body locking portion 12d of the holding piece 12 of the auxiliary hook member 10 when the claws 21a, 21b are located at the engagement position, and the spring body locking is performed. It is formed so as to come into contact with the locking surface 12c of the portion 12d.

The third contact surface 25c is formed so as to contact the tip contact surface 12e of the holding piece 12 of the auxiliary hook member 10 when the engagement state of the claws 21a and 21b is released. . When the claw bodies 21a and 21b are located at the engagement positions, the first contact surface 25a contacts the inclined surface of the tapered portion 60a, and the second contact surface 25b Locking surface 12c of portion 12d
However, the third contact surface 25c is not in contact with the outer convex portion 12d of the auxiliary hook member 10, and the third contact surface 25c and the outer convex portion of the auxiliary hook member 10 are not in contact with each other. A gap is formed between the inclined surface of the portion 12d.

The second spring body 26 extends obliquely from both side portions closer to the claw body 21b side (the other end side) than the first spring body 23, and on the inner wall surface 1c side of each tip portion. The convex part 27 is formed. The convex portion 27 is fitted into a substantially V-shaped guide groove 1d formed on the inner wall surface 1c of the bottom cover 1, and both end portions of the guide groove 1d are related to the release positions of the claw bodies 21a and 21b. The shape corresponds to the matching position. The V-shaped angle of the guide groove is the second spring body 26.
This is set in consideration of the elastic characteristics of the above and the play amount in the moving direction of the hook member 20.
The auxiliary hook member 10 and the hook member 20 can be formed using a resin material such as polyacetal, for example.

Next, the operation of the housing coupling mechanism according to Embodiment (1) will be described. FIG. 5 is a plan view schematically showing an inner wall of a connection surface of a case in which the case connection mechanism according to the embodiment (1) is adopted, and (a) is a connection with another case. The state when the state is released, (b) shows the state when connected to another casing. FIG. 6 is a partial rear view (inside wall surface side of the casing) of the connecting portion between the auxiliary hook member and the hook member constituting the casing connecting mechanism according to the embodiment (1). The state when the connection state with the other housing is released, (b) shows the state when it is connected with another housing.

First, from the state in which the connection state with the other casing shown in FIG. 5A is released, FIG.
The operation of each part when shifting to the connected state shown in FIG. 3 will be described, and then the operation of each part when releasing the connected state with the other casing will be described.

5A, most of the exposed piece 11 of the auxiliary hook member 10 is pulled out of the bottom cover 1 in the disengaged state (that is, the state where the claws 21a and 21b are in the disengaged position). The release position mark 14 provided on the exposed piece 11 is at the position of the insertion hole 5 of the bottom cover 1, and the holding piece 12 of the auxiliary hook member 10 is formed on the inner wall surface 1 c of the bottom cover 1.
The outer convex portion 12b is locked to the insertion hole 5, and the first concave portion is formed in the outer convex portion 12b.
The small convex portions 60b formed on the inner surfaces of the guide bodies 6a and 6b are engaged.

Further, the locking piece 12 a of the holding piece 12 of the auxiliary hook member 10 is connected to the one end 2 of the hook member 20.
2 (see FIG. 6A), and the third contact surface 25c of the tip 25 of the first spring body 23 of the hook member 20 is an auxiliary member. The first spring body 23 comes into contact with the first guide bodies 6a and 6b in a state where it is not elastically displaced, and comes into contact with the tip contact surface 12e of the holding piece 12 of the hook member 10. Yes. Further, the bent portion 24 of the first spring body 23 is supported near the tips of the second guide bodies 7a and 7b. Moreover, the convex part 27 of the 2nd spring body 26 is located in the cancellation | release position side of the guide groove 1d, and the play of the hook member 20 in a cancellation | release position is suppressed.

Next, with the connection surface 1a of the bottom cover 1 superimposed on the connection surface of another housing, FIG.
When the operation of pushing the auxiliary hook member 10 into the housing (bottom cover 1) is started from the disconnected state shown in (a), the auxiliary hook member 10 is interlocked with the operation of entering the bottom cover 1. That is, the hook member 20 starts to move to the engagement position side while being pushed by the auxiliary hook member 10. The convex portion 27 of the second spring body 26 also starts to move toward the engagement position while being elastically displaced along the guide groove 1d from the release position.

Thereafter, the first abutment surface 25a of the distal end portion 25 of the first spring body 23 is moved to the first guide body 6a,
When the position of the taper portion 60a of 6b is reached and the auxiliary hook member 10 is further pushed, the first contact surface 25a of the distal end portion 25 of the first spring body 23 is brought into contact with the first guide bodies 6a and 6b. A third contact surface 25c of the first spring body 23 distal end portion 25 that has started to contact the inclined surface of the tapered portion 60a and contacted to the distal end contact surface 12e of the auxiliary hook member 10 is attached to the auxiliary hook member 10. Pressed and gradually begins to shift outward. That is, the distal end portion 25 of the first spring body 23 starts to be elastically displaced outward.

Further, the auxiliary hook member 10 is pushed in, the first spring body 23 is elastically displaced outward along the taper portion 60a, and the third contact surface 25c is the tip inclined surface 12 of the auxiliary hook member 10.
When it comes off from d, the second contact surface 25b of the distal end portion 25 of the first spring body 23 begins to be engaged with the engagement surface 12c of the spring body engagement portion 12d of the auxiliary hook member 10, and the second spring Convex part 27 of body 26
However, beyond the bending point of the guide groove 1d, the convex part 27 moves to the engagement position side.

Then, in a state where the first spring body 23 is elastically displaced, the second contact surface 25b of the tip portion 25 is locked to the spring body locking portion 12d of the auxiliary hook member 10, and the first Contact surface 25
FIG. 5B and FIG. 6B in which a is in contact with the tapered portion 60a of the first guide bodies 6a and 6b (the state where the claw bodies 21a and 21b are in the engaged position). become.

In the engaged state shown in FIG. 5B, more than half of the exposed piece 11 of the auxiliary hook member 10 is pushed into the bottom cover 1, and the engagement position mark 13 provided on the exposed piece 11 is the bottom cover. 1 at the insertion hole 5 so that the claw bodies 21a and 21b can be easily grasped at the engagement position. Further, in the engaged state shown in FIG. 5B, the second contact surface 25 b of the distal end portion 25 of the first spring body 23 is engaged with the spring body locking portion 12 d formed on the auxiliary hook member 10. The first abutment surface 25a is locked to the stop surface 12c, and the first guide body 6a,
The third abutting surface 25c is not in contact with the auxiliary hook member 10 and a gap is formed between the auxiliary hook member 10 and the third abutting surface 25c. Yes.

In the engaged state shown in FIG. 5B, when the force that moves the claw bodies 21a, 21b to the release position side due to an impact such as dropping acts on the bottom cover 1 or the claw bodies 21a, 21b,
The spring body 23 has a distal end portion 25 subjected to a force that moves toward the inside (that is, the release position side) along the tapered portion 60a of the first guide bodies 6a and 6b, and acts on the second contact surface 25b. A force acts to press the locking surface 12c of the spring body locking portion 12d in a direction parallel to the inclined surface of the tapered portion 60a.

Since the locking surface 12c of the spring body locking portion 12d of the auxiliary hook member 10 has a shape inclined outward, the spring body locking portion 12d is pressed by the pressing force from the second contact surface 25b. A force for moving the auxiliary hook member 10 in the pushing direction (that is, the engagement position side) acts on the locking surface 12c. As a result, the movement of the auxiliary hook member 10 toward the release position is restricted, and the movement of the hook member 20 from the engagement position of the claw bodies 21a and 21b is restricted, and the movement from the engagement position of the claw bodies 21a and 21b is restricted. Detachment is prevented.

At the time of separating the connected housings, the auxiliary hook member 10 is pulled out (retracted) from the bottom cover 1 from the engaged state shown in FIG. When the operation of pulling out the auxiliary hook member 10 is started, first, the position of the hook member 20 is kept as it is, and only the auxiliary hook member 10 starts to retract. That is, until the state where the locking surface 12c of the spring body locking portion 12d of the auxiliary hook member 10 is locked with the second contact surface 25b of the first spring body 23 distal end portion 25 is released. Only the auxiliary hook member 10 is retracted.

Thereafter, when the locking state between the locking surface 12c of the spring body locking portion 12d and the second contact surface 25b of the first spring body 23 tip 25 is released, the tip of the first spring body 23 is released. 25 third contact surface 2
5c and the tip contact surface 12e of the auxiliary hook member 10 start to come into contact with each other, and the first spring body 23 that has been elastically displaced outwardly starts to return to the state in which it is not elastically displaced.

And when the 1st spring body 23 returns to the state which is not elastically displaced, the 1st contact surface 25a of the 1st spring body 23 front-end | tip part 25 will taper the 1st guide bodies 6a and 6b. 6a, the one end 22 of the hook member 20 is locked to the locking piece 12a of the holding piece 12 of the auxiliary hook member 10 (the form shown in FIG. 6A). The hook member 20 is held.

From this state, the hook member 20 can be moved to the release position side. Thereafter, when the auxiliary hook member 10 is further moved backward, the hook member 20 starts to move backward together with the auxiliary hook member 10. The convex portion 27 of the second spring body 26 moves from the engagement position to the release position side beyond the bending point, and the auxiliary hook member 10 and the hook member 20 are moved to the release position shown in FIG. It is supposed to move.

According to the case coupling mechanism according to the embodiment (1), the claws 21a and 21b of the hook member 20 move to the engagement position in conjunction with the operation of the auxiliary hook member 10 entering the case. At the same time, the first spring body 23 of the hook member 20 is elastically displaced, and the distal end thereof is engaged with the spring body engaging portion 12d of the auxiliary hook member 10, and the distal ends of the first guide bodies 6a and 6b. It will be in the state contact | abutted to the taper part 60a.

More specifically, when the claws 21a and 21b are located at the engagement positions, the hook member 20
In a state where the first spring body 23 is elastically displaced, the second contact surface 25b of the distal end portion 25 is locked to the locking surface 12c of the spring body locking portion 12d of the auxiliary hook member 10, and Then, the first contact surface 25a of the distal end portion 25 of the first spring body 23 comes into contact with the tapered portion 60a of the first guide bodies 6a and 6b. Therefore, when the force that moves the claws 21a, 21b to the release position side due to an impact such as dropping acts on the bottom cover 1 or the claws 21a, 21b, the tip 25 of the first spring body 23 has A force is exerted to move inwardly (that is, the release position side) along the tapered portion 60a of the first guide bodies 6a and 6b, and the spring contact portion 12d is engaged with the second contact surface 25b. The force which presses the stop surface 12c acts.

Since the locking surface 12c of the spring body locking portion 12d has a shape that is inclined outward toward the other end, the spring body locking portion 12d is pressed by the pressing force from the second contact surface 25b. Locking surface 12
A force acts on c to move the auxiliary hook member 10 to the other end side (that is, the engagement position side). As a result, the movement of the auxiliary hook member 10 to the release position side can be restricted, the movement of the hook member 20 can be restricted, and the disengagement of the claw bodies 21a, 21b from the engagement position can be prevented. It can be set as the connection state of the housing | casing excellent in impact property.

In addition, a tapered portion 60a is formed at the tip of the first guide bodies 6a and 6b, and the locking surface 12c of the spring body locking portion 12d of the auxiliary hook member 10 is inclined outward toward the other end. Since it has a shape, the operation of moving the hook member 20 to the release position by retracting the auxiliary hook member 10 that has entered the bottom cover 1 can be reliably and smoothly performed. Separation work can be easily performed, and workability when separating the housing can be improved. Therefore, it is possible to realize a housing connection mechanism that can achieve both improvement in impact resistance in the connected state of the housing and ease of separation work of the connected housings.

Further, a second spring body 26 having a convex portion 27 is extended from both side portions of the hook member 20,
The projecting portion 27 of the second spring body 26 is a bent guide groove 1 formed in the bottom cover 1.
Since it is inserted into d, it is possible to prevent the hook member 20 and the auxiliary hook member 10 from rattling when the hook member 20 is located at the release position. Also, the hook member 20
When the hook member 10 is moved from the release position to the engagement position, a pressing force can be applied to the release position. On the other hand, when the hook member 10 is moved from the engagement position to the release position, the pressing force is applied to the engagement position. The amount of play when the hook member 20 is located at the engagement position or the release position can be reduced, and the hook member 20 can be utilized by utilizing the elastic force of the second spring body 26. Can be appropriately controlled.

In addition, second guide bodies 7 a and 7 formed on the inner wall surface 1 c of the connecting surface 1 a of the bottom cover 1.
By b, the form of the elastic displacement of the first spring body 23 can be further stabilized, and the first spring body 23 and the auxiliary hook member 10 can be locked or the first spring body 23 and the first guide. Body 6a, 6
The movement restriction by the contact state with b can be made more reliable, and the hook member 2
The support state of 0 can be stabilized.

Further, the holding frame 8e (insertion portion) formed on the inner wall surface 1c of the connection surface 1a of the bottom cover 1 can be supported in a state where the other end side of the hook member 20 is inserted. The effect of preventing rattling of the member 20 can be enhanced.

Further, the engagement position mark 13 provided on the auxiliary hook member 10 indicating the state where the claw bodies 21a and 21b are located at the engagement position, and the state where the claw bodies 21a and 21b are located at the release position. With the release position mark 14 shown, it is possible to easily grasp whether the claws 21a and 21b are in the engaged position or in the released position. In addition,
Only one of the engagement position mark 13 and the release position mark 14 may be provided.

FIG. 7A is a perspective view schematically showing the inner wall of the connecting surface of the housing in which the housing connecting mechanism according to the embodiment (2) is adopted, and FIG. 7B is a schematic view showing the connecting surface of the housing. There is a state when the connection state with the other casing is released. 8A is a perspective view schematically showing the inner wall of the connection surface of the housing when it is connected to another housing, and FIG. 8B is a schematic view showing the connection surface of the housing.

9 shows an exploded perspective view of the casing, auxiliary hook member, and plane (inner wall surface side) of the casing constituting the casing coupling mechanism according to Embodiment (2), and FIG. Embodiment (
The housing | casing which comprises the housing | casing connection mechanism which concerns on 2), an auxiliary | assistant hook member, and the back surface (connection surface side) exploded perspective view of a hook member are shown. However, parts having the same functions as those of the case coupling mechanism according to the embodiment (1) shown in FIGS. 1 to 6 are denoted by the same reference numerals, and description thereof is omitted here.

The difference between the housing coupling mechanism according to the embodiment (2) and the housing coupling mechanism according to the embodiment (1) is mainly formed on the inner wall surface 1c of the coupling surface 1b of the bottom cover 1A. The shape of the first guide bodies 6c and 6d, the shape of the holding piece 12A of the auxiliary hook member 10A, and the hook member 20
The shape of the first A spring body 23A will be described below.

First guide bodies 6c and 6d are formed on the inner wall surface 1c of the connecting surface 1a of the bottom cover 1A, and the first guide bodies 6c and 6d are on both sides of the insertion hole 5 formed in the bottom cover 1A. Are formed in a direction substantially perpendicular to the side surface 1b, and by the first guide bodies 6c and 6d,
The first spring body 23A of the auxiliary hook member 10A and the hook member 20A is clamped so as to advance and retreat. The first guide bodies 6c and 6d have a shape in which the tapered portion 60a is not formed like the first guide bodies 6a and 6b of the bottom cover 1 employed in the case coupling mechanism according to the embodiment (1). It has become.

The auxiliary hook member 10A has a substantially flat plate shape, and extends in a substantially vertical direction from both the exposed piece 11 exposed from the insertion hole 5 of the bottom cover 1A and one end surface of the exposed piece 11 on the housing insertion side. It includes a pair of holding pieces 12A provided.

A bent hook portion 11a is formed at the distal end portion of the exposed piece 11, and the auxiliary hook member 10A is pushed into both sides of the exposed piece 11 to an engagement position for engaging the claws 21a and 21b. The engagement position mark 13 indicating the state of being in the state and the auxiliary hook member 10A are claw bodies 21a, 21.
The release position mark 14 indicating that it is pulled out to the release position where the engaged state of b is released.
And are provided.

Further, as shown in FIGS. 9 and 10, a locking piece 12 a for supporting the one end side of the hook member 20 </ b> A with the holding piece 12 </ b> A is provided on the inner side portion on the tip side of each holding piece 12 </ b> A of the auxiliary hook member 10 </ b> A.
Are formed so as to be capable of advancing and retreating to the inner side surfaces of the first guide bodies 6c and 6d, and the auxiliary hook members 10A are inserted. An outer convex portion 12b for locking to the hole 5 to prevent the bottom cover 1A from coming off;
A substantially V-shaped spring body locking portion 12f and a spring body contact portion 12g having an inclined surface are formed.

The hook member 20A is formed in a length shape that can be accommodated in the bottom cover 1A, and claw bodies 21a and 21b protruding from the exposure holes 4a and 4b in the vicinity of both ends of the surface facing the inner wall surface 1c of the bottom cover 1A. Is erected.

The one end portion 22 of the hook member 20A is formed in a substantially rectangular shape so as to be sandwiched between the holding pieces 12A of the auxiliary hook member 10A, and the auxiliary hook is provided on both side portions of the one end portion 22 on the claw body 21a forming surface side. Stepped portion 22a for locking to the locking piece 12a of the holding piece 12A of the member 10A.
Is formed.

A pair of first spring bodies 23A and a pair of second spring bodies 26 are extended from both side portions of the hook member 20A parallel to the moving direction. The first spring body 23A extends substantially parallel to both side surfaces of the hook member 20A toward the auxiliary hook member 10A via the bent portion 24, and the distal end portion 25A is positioned near the front side of the claw body 21a. It is formed to do.

The distal end portion 25A of the first spring body 23A is formed in a shape having a contact surface 25d at the end surface and a locking convex portion 25e formed inward from the contact surface 25d. The contact surface 25d is formed substantially perpendicular to the inner surface of the first guide bodies 6c, 6d, and the claw body 21a of the hook member 20A.
, 21b are positioned so as to come into contact with the end surfaces of the first guide bodies 6c, 6d when the engaging positions are located at the engaging positions (see FIG. 8).

Further, the locking projection 25e of the hook member 20a is engaged with the spring body locking portion 12f formed on the holding piece 12A of the auxiliary hook member 10A when the claws 21a and 21b are located at the engagement positions. When it is stopped and the engagement state of the claws 21a and 21b is released, it is formed so as to come into contact with the spring body contact portion 12g formed on the holding piece 12A of the auxiliary hook member 10A. The auxiliary hook member 10A and the hook member 20A can be formed using a resin material such as polyacetal, for example.

Next, the operation of the housing coupling mechanism according to Embodiment (2) will be described. FIG. 11 is a plan view schematically showing an inner wall of a connection surface of a case in which the case connection mechanism according to the embodiment (2) is adopted, and (a) is a connection with another case. The state when the state is released, (b) shows the state when connected to another casing. FIG. 12 is a partial rear view (inside wall surface side of the casing) of the connecting portion of the auxiliary hook member and the hook member constituting the casing connecting mechanism according to the embodiment (2). The state when the connection state with the casing of the is released, (b
) Shows a state when connected to another casing.

First, from the state in which the connection state with the other casing shown in FIG.
The operation of each part when shifting to the connected state shown in (b) will be described, and then the operation of each part when releasing the connected state will be described.

11A, most of the exposed pieces 11 in the auxiliary hook member 10A are drawn out of the bottom cover 1A, and the release position mark 14 provided on the exposed pieces 11 is the bottom cover 1A. The outer convex portion 12b of the holding piece 12A of the auxiliary hook member 10A is locked to the insertion hole 5 on the inner wall surface 1c of the bottom cover 1A.

The locking piece 12a of the holding piece 12A of the auxiliary hook member 10A is locked with the stepped portion 22a of the one end portion 22 of the hook member 20A (see FIG. 12A), and the hook The locking convex portion 25e of the tip end portion 25A of the first spring body 23A of the member 20A abuts on the spring body abutting portion 12g of the holding piece 12A of the auxiliary hook member 10A, and the first spring body 23A is elastic. The first guide bodies 6c and 6d are in contact with each other without being displaced. The bent portion 24A of the first spring body 23A is supported in the vicinity of the tips of the second guide bodies 7a and 7b, and the convex portion 27 of the second spring body 26 releases the guide groove 1d. The backlash of the hook member 20A located at the position side and in the release position is suppressed.

Next, with the connection surface 1a of the bottom cover 1A overlapped with the connection surface of another housing, the auxiliary hook member 10A is moved from the connection release state shown in FIG. 11A to the housing (bottom cover 1A).
) When the operation of pushing in is started, the hook member 20A moves to the engagement position side in conjunction with the operation of the auxiliary hook member 10A entering the bottom cover 1A, that is, while being pushed by the auxiliary hook member 10A. start. The convex portion 27 of the second spring body 26 also starts to move toward the engagement position while being elastically displaced from the release position along the guide groove 1d.

Thereafter, the abutment surface 25d of the first spring body 23A tip 25A is brought into contact with the first guide bodies 6c, 6
When the end face of d is reached and the auxiliary hook member 10A is further pushed in, the first spring body 23A
While the contact surface 25d of the tip 25A is in contact with the ends of the first guide bodies 6c, 6d, the first
The spring body 23A begins to be elastically displaced outward along the inclined surface of the spring body contact portion 12g of the auxiliary hook member 10A.

Further, when the auxiliary hook member 10A is pushed in, the first spring body 23A is elastically displaced outward, and the locking convex portion 25e of the distal end portion 25A becomes the spring body contact portion 12g of the auxiliary hook member 10A.
When the inclined surface is exceeded, the locking projection 25e of the first spring body 23A is locked to the spring locking portion 12f, and the projection 27 of the second spring body 26 is connected to the guide groove 1d. Beyond the bending point, the convex part 27
Moves to the engagement position.

Then, in a state where the first spring body 23A is elastically displaced, the locking projection 25e of the distal end portion 25A is locked to the spring body locking portion 12f of the auxiliary hook member 10A, and the distal end portion 25A The contact surface 25d is brought into contact with the end surfaces of the first guide bodies 6c and 6d, as shown in FIG. 11B.

In the engaged state shown in FIG. 11B, more than half of the exposed piece 11 of the auxiliary hook member 10A is pushed into the bottom cover 1A, and the engagement position mark 13 provided on the exposed piece 11 is the bottom cover. It comes to the position of 1A insertion hole 5, and it can grasp | ascertain easily that nail | claw body 21a, 21b exists in an engagement position.

In the engaged state shown in FIG. 11 (b), when a force that moves the claw bodies 21a, 21b to the release position side by an impact such as dropping acts on the bottom cover 1A or the claw bodies 21a, 21b,
A force for pressing the end surfaces of the first guide bodies 6c and 6d acts on the first spring body 23A distal end portion 25A.

Since the contact surface 25d of the first spring body 23A is in contact with the first guide bodies 6c and 6d substantially perpendicularly, the auxiliary hook member 10A is prevented from moving to the release position side, The hook member 20A is also prevented from moving from the engaging position of the claw bodies 21a, 21b, so that the claw bodies 21a, 2
It is possible to prevent detachment from the engaging position of 1b.

At the time of separating the connected casings, the auxiliary hook member 10A is pulled out (retracted) from the bottom cover 1A from the engaged state shown in FIG. When the operation of pulling out the auxiliary hook member 10A is started, first, only the auxiliary hook member 10A starts to be retracted while keeping the position of the hook member 20A. That is, the state where the spring body locking portion 12f of the auxiliary hook member 10A and the locking projection 25e of the first spring body 23A tip portion 25A are locked is released, and the locking of the first spring body 23A is released. Only the auxiliary hook member 10A moves backward until the convex portion 25e contacts the spring body contact portion 12g of the auxiliary hook member 10A.

Thereafter, when the locking state between the spring body locking portion 12f and the locking projection 25e of the first spring body 23A tip 25A is released, the locking projection 25e of the first spring body 23A tip 25A. However, the first spring body 23A, which has been elastically displaced outward, starts to return to the state where it has not been elastically displaced, starting to abut against the inclined surface of the spring body abutting portion 12g of the auxiliary hook member 10A.

Then, when the first spring body 23A returns to the state where it is not elastically displaced, the contact surface 25d of the first spring body 23A tip 25A comes off from the end surfaces of the first guide bodies 6c, 6d, First
The outer portion of the spring body 23A is in contact with the inner surface of the first guide bodies 6c and 6d, and the one end 22 of the hook member 20A is locked to the locking piece 12a of the holding piece 12A of the auxiliary hook member 10A. The state (the state shown in FIG. 12A) is reached, and the hook member 20 is moved by the auxiliary hook member 10A.
A is held.

From this state, the hook member 20A can be moved to the release position side, and then
When the auxiliary hook member 10A is further retracted, the hook member 20A begins to retract together with the auxiliary hook member 10A, and the convex portion 27 of the second spring body 26 of the hook member 20A moves from the engagement position beyond the bending point to the release position. The auxiliary hook member 10A and the hook member 20A are moved to the release position shown in FIG. 11A.

According to the case coupling mechanism according to the embodiment (2), the claws 21a and 21b of the hook member 20A move to the engagement position in conjunction with the operation of the auxiliary hook member 10A entering the case. At the same time, the first spring body 23A of the hook member 20A is elastically displaced, and the tip portion thereof is
The first guide bodies 6c and 6d are locked to the spring body locking portion 12d of the auxiliary hook member 10A.
It will be in the state contact | abutted to the end surface of the front-end | tip.

More specifically, when the claws 21a and 21b are located at the engagement positions, the hook member 20
With the first spring body 23A of A being elastically displaced, the locking convex portion 25e of the tip portion 25A is
It is locked to the spring body locking portion 12f of the auxiliary hook member 10A, and the contact surface 25d of the first spring body 23A tip 25A is in contact with the end surfaces of the first guide bodies 6c and 6d. It has become. Therefore, even when the force that moves the claw bodies 21a and 21b to the release position side due to an impact such as dropping acts on the claw bodies 21a and 21b, the movement of the hook member 20A to the release position side is almost complete. It is possible to prevent the claw bodies 21a and 21b from being disengaged from the engaging position, and the casing can be connected with excellent impact resistance.

Further, by a simple operation of retracting the auxiliary hook member 20A that has entered the housing, the engagement state between the distal end portion 25A of the first spring body 23A and the spring body engagement portion 12f of the auxiliary hook member 10A, and The contact state between the distal end portion 25A of the first spring body 23A and the distal end surfaces of the first guide bodies 6c and 6d can be released, and the claw bodies 21a and 21b can be moved to the release position and connected. A housing connection mechanism that can easily perform the separation work of the housing and achieves both improved shock resistance in the connected state of the housing and simplification of the separation work of the connected housing is realized. can do.

(A) is the perspective view which showed the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (1) of this invention was employ | adopted, (b) typically showed the connection surface of the housing | casing. It is the figure which showed the state when the connection state with another housing | casing is cancelled | released. (A) is the perspective view which showed typically the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (1) was employ | adopted, (b) was the connection surface of a housing | casing, It is the figure which showed the state when connected with another housing | casing. It is the plane exploded perspective view showing typically the case, auxiliary hook member, and hook member which constitute the case connection mechanism concerning an embodiment (1). It is the back exploded perspective view showing typically the case, auxiliary hook member, and hook member which constitute the case connection mechanism concerning an embodiment (1). It is the top view which showed typically the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (1) was employ | adopted, (a) is the connection state with another housing | casing cancelled | released. (B) is a diagram showing a state when connected to another casing. It is a partial rear view of the connection part of the auxiliary | assistant hook member and hook member which comprise the housing | casing connection mechanism which concerns on embodiment (1), (a) is the connection state with another housing | casing released. (B) is the figure which showed the state when connected with another housing | casing. (A) is the perspective view which showed typically the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (2) was employ | adopted, (b) was the connection surface of a housing | casing, It is the figure which showed the state when the connection state with another housing | casing is cancelled | released. (A) is the perspective view which showed typically the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (2) was employ | adopted, (b) was the connection surface of a housing | casing, It is the figure which showed the state when connected with another housing | casing. It is the plane exploded perspective view showing typically the case, auxiliary hook member, and hook member which constitute the case connection mechanism concerning an embodiment (2). It is the back exploded perspective view showing typically the case, auxiliary hook member, and hook member which constitute the case connecting mechanism concerning an embodiment (2). It is the top view which showed typically the inner wall of the connection surface of the housing | casing by which the housing | casing connection mechanism which concerns on embodiment (2) was employ | adopted, (a) is the connection state with another housing | casing cancelled | released. (B) is a diagram showing a state when connected to another casing. It is a partial rear view of the connection part of the auxiliary | assistant hook member and hook member which comprise the housing | casing connection mechanism which concerns on embodiment (2), (a) is the connection state with the other housing | casing released. (B) is a figure which showed the state when connected with another housing | casing. It is the figure which showed the structure of the inner wall part of the connection surface in the housing | casing to which the conventional housing connection structure was applied. (A)-(d) is a plane sectional view showing an important section for explaining an engagement state of a claw in a conventional case connection structure. (A)-(d) is the figure which showed the operation state of the hook member at the time of the connection of the housing | casing which applied the conventional housing connection mechanism.

Explanation of symbols

1, 1A Bottom cover (housing)
1a Connecting surface 1c Inner wall surface (inner wall part)
1d Guide part 4a, 4b Exposed hole (hole part)
5 Insertion holes 6a, 6b, 6c, 6d 1st guide body 7a, 7b 2nd guide body 8e Holding frame (insertion part)
10, 10A Auxiliary hook member 11 Exposed piece 12, 12A Holding piece 12c Locking surface 12d Spring body locking part 12f Spring body locking part (concave part)
13 Engagement position mark 14 Release position mark 20, 20A Hook members 21a, 21b Claw body 23, 23A First spring body 24 Bent part 25 of first spring body 25A First tip 25a of first spring body First Abutment surface 25b second abutment surface 25d abutment surface 25e of the first spring body tip portion locking projection (convex portion)
26 2nd spring body 27 Convex part 60a of 2nd spring body Tapered part

Claims (7)

A housing,
The first end is exposed from the housing and the other end is formed on the inner wall of the connecting surface of the housing.
An auxiliary hook member supported so as to be able to advance and retreat along the guide body of
One end side of the auxiliary hook member is supported so as to be engageable with the other end side of the auxiliary hook member, and a connecting claw body projecting from a hole formed in the connecting surface of the housing, and the other end of the auxiliary hook member A hook member formed with a side and a first spring body extending in a lockable form,
In conjunction with the operation of the auxiliary hook member entering the housing, the hook member moves to the engagement position, the first spring body is elastically displaced, and the tip thereof is While being locked to the spring body locking portion formed at the tip of the other end side of the auxiliary hook member and being in contact with the tip of the first guide body,
The interlocking state between the distal end portion of the first spring body and the spring body locking portion of the auxiliary hook member in conjunction with the operation of retracting the auxiliary hook member that has entered the housing, and the first The housing is configured such that the contact state between the distal end portion of the first spring body and the distal end portion of the first guide body is released, and the claw body of the hook member moves to the release position. Body coupling mechanism. The first guide body is formed in such a manner as to sandwich both side portions of the auxiliary hook member, and includes a tapered portion that is inclined outwardly at each tip portion.
The spring hook engaging portion of the auxiliary hook member includes a locking surface that is inclined outwardly toward the other end,
A first contact surface for contacting the tip of the first spring body with the tapered portion and a second contact surface for contacting the locking surface of the spring body locking portion And
When the claw body is located at the engagement position, the second contact surface at the tip of the first spring body is elastically displaced, and the second contact surface of the spring body is engaged with the engagement surface of the spring body engagement portion. The housing according to claim 1, wherein the first contact surface of the first spring body is locked and the first contact surface is in contact with the tapered portion of the first guide body. Body coupling mechanism. The first guide body is formed in a form for sandwiching both side portions of the auxiliary hook member,
A distal end portion of the first spring body includes a contact surface for contacting the end surface of the first guide body, and a convex portion formed in an inner direction along the contact surface;
The spring body locking portion of the auxiliary hook member includes a concave portion for locking the convex portion,
When the claw body is located at the engagement position, the convex portion of the tip portion is locked to the concave portion of the spring body locking portion in a state where the first spring body is elastically displaced, and The contact surface of the first spring body tip is in contact with the end surface of the first guide body.
The case coupling mechanism as described. A second spring body having a convex portion is extended from both sides of the hook member,
The casing according to any one of claims 1 to 3, wherein the convex portion of the second spring body is fitted in a bent guide portion formed in the casing. Linkage mechanism. The first spring body is formed to form a bent portion from both side portions of the hook member and extend toward one end side,
The second guide body that supports the bent portion of the first spring body is formed on the inner wall portion of the connection surface of the housing. Case coupling mechanism. The insertion portion for inserting and supporting the other end side of the hook member is formed in the inner wall portion of the connecting surface of the casing. The case coupling mechanism as described. A mark indicating a state in which the claw body is positioned at the engagement position and / or a mark indicating a state in which the claw body is positioned at the release position on a portion of the auxiliary hook member exposed from the housing. The housing coupling mechanism according to claim 1, wherein the housing coupling mechanism is provided.

Images