JP2019054090A - Housing connection structure - Google Patents

Abstract

To provide a housing connection structure which prevents rattling from occurring in a connection direction between two housings.SOLUTION: In a housing connection structure, engagement claw parts 4 are provided at one of two housings 1A, 1B, and claw receiving parts 14 which are mating side engagement parts for engaging with the engagement claw parts 4 are provided at the other. The housing connection structure is provided with plate spring parts 6 each serving as a rattling inhibition part which biases the claw receiving part 14 in an engagement direction in a state that the engagement claw part 4 is engaged with the claw receiving part 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a connection structure that connects housings.

  A housing that stores electronic components, batteries, and the like may be connected to a plurality of housings for function expansion, battery capacity expansion, and the like. A structure shown in FIG. 7 has been proposed as a conventional connecting structure of casings (see Patent Document 1).

  As shown in FIG. 7, this conventional housing connection structure includes a male locking portion 51 provided in one housing 50A and a female locking portion 61 provided in the other housing 50B. It has.

  The male side locking part 51 protrudes from the side surface of one housing 50A. The male side locking part 51 has a pair of left and right slide guide walls 52 and a locking protrusion 53 provided between the pair of slide guide walls 52.

  The female side latching part 61 is projected from the side surface of the other casing 50B. The female locking portion 61 includes a pair of left and right rail walls 62, an elastic deflection plate portion 63 provided between the pair of rail walls 62, and a claw portion 64 provided on the elastic deflection plate portion 63.

  The pair of left and right slide guide walls 52 of one housing 50A is inserted into the pair of left and right rail walls 62 of the other housing 50B. Then, the locking projection 53 interferes with the claw portion 64 during the slide insertion process, but the elastic deflection plate portion 63 is bent and deformed inward (in the recess direction), and insertion of the locking projection 53 is allowed. When the locking projection 53 gets over the claw portion 64, the elastic bending plate portion 63 is elastically restored and deformed, and the locking projection 53 and the claw portion 64 are locked. Thus, the two casings 50A and 50B are connected.

JP 2003-257300 A

  By the way, in the locking structure of the locking projection 53 and the claw portion 64 in the conventional example, the locking projection 53 and the claw portion 64 are securely locked in consideration of the dimensional tolerance of each part. The protrusion 53 is designed to overstroke more than the position over the claw portion 64. However, in the locked state of the locking projection 53 and the claw portion 64, there is a problem that rattling occurs in the connecting direction M due to an overstroke.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a housing connection structure in which backlash in the connecting direction does not occur between two housings.

  In the present invention, either one of the two housings is provided with a locking portion, and the other is provided with a mating locking portion that locks to the locking portion, and the locking portion is the mating member. In the state of being locked to the side locking portion, a backlash suppressing portion that biases the counterpart locking portion in the locking direction is provided.

  According to the present invention, since the other-side locking portion is urged in the locking direction by the backlash suppressing portion, backlash in the connecting direction does not occur between the two housings.

FIG. 2 is a perspective view of the first embodiment of the present invention before two casings are connected. FIG. 2 is a perspective view of a main part of a connection structure of two housings according to the first embodiment of the present invention. 1st Embodiment of this invention is shown, (a), (b) is a perspective view which shows each connection process of two housing | casing. 1 shows a first embodiment of the present invention, (a), (b) is a perspective sectional view of the main part of each connection process of two housings. The 2nd Embodiment of this invention is shown, (a) is a perspective view of a protrusion part, (b) is a perspective sectional view in an insertion hole. The 2nd Embodiment of this invention is shown, (a), (b) is a perspective sectional view of the principal part of each connection process of two housings. It is a perspective view of the connection structure of a housing | casing which shows a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 4 show a first embodiment of the present invention. As shown in FIG. 1, the connection structure of the housings according to the first embodiment directly connects the two housings 1A and 1B. Each housing 1A, 1B accommodates electronic components, batteries, and the like.

  One housing 1A has an upper surface as a connection surface 2a and a lower surface as a surface 2b opposite to the connection surface 2a. The other housing 1B has a lower surface as a connecting surface 2a and an upper surface as a surface 2b opposite to the connecting surface 2a.

  An insertion hole 3 that is a pair of insertion portions is provided at a symmetrical position of one housing 1A. Each insertion hole 3 is a rectangular hole and opens to the connection surface 2a and the opposite surface 2b.

  As shown in detail in FIGS. 1 and 2, in each insertion hole 3, a locking claw portion 4 that is a locking portion, a leaf spring portion 6 that is a backlash suppressing portion, and a regulating projection wall 7 that is an excessive insertion preventing portion. And are provided.

  The locking claw portion 4 is supported in a cantilevered state on the inlet side of the insertion hole 3. The locking claw part 4 changes in the direction which makes the protrusion amount in the insertion hole 3 small by elastic deformation.

  The leaf spring portion 6 is arranged on the insertion back side with respect to the locking claw portion 4. The leaf spring portion 6 is a cantilever spring supported on the same surface of the insertion hole 3 as the locking claw portion 4. The distal end side of the leaf spring portion 6 is located on the insertion locus of the insertion distal end surface of the claw receiving portion 14 of the protruding portion 10.

  The restricting protruding wall 7 is disposed on the insertion back side with respect to the leaf spring portion 6 of the insertion hole 3. The restricting protruding wall 7 protrudes from the surface of the insertion hole 3 facing the locking claw portion 4 and the leaf spring portion 6. The restriction protrusion wall 7 is located on the insertion locus of the back wall 11 of the protrusion 10 described below.

  A pair of protrusions 10 are provided on the connecting surface 2a of the other housing 1B. Each protrusion 10 has a back wall 11 and a pair of side walls 12 protruding from both sides of the back wall 11. Each protrusion 10 is formed to have a size that can be inserted into each insertion hole 3 of the housing 1A with almost no gap.

  At the upper end portion of the back wall 11, a claw receiving portion 14 that is a counterpart locking portion is provided. Each claw receiving portion 14 has a tapered surface 14a that gradually increases from the lower end toward the root. The upper end of the tapered surface 14a is formed on the upper end vertical surface 14b. The lower end of the tapered surface 14a is formed on the lower end vertical surface 14c.

  Next, a procedure for connecting the two casings 1A and 1B will be described. As shown in FIG. 3 (a), each protrusion 10 of the other housing 1B is inserted into each insertion hole 3 opened in the connecting surface 2 of one housing 1A.

  Then, as shown in FIG. 4A, the tip of the claw receiving portion 14 of the protruding portion 10 first hits the locking claw portion 4. When the protruding portion 10 is further inserted into the insertion hole 3 from this state, the locking claw portion 4 is elastically deformed and insertion of the protruding portion 10 is allowed. And the nail | claw receiving part 14 is inserted to the position which gets over the latching claw part 4 by the elastic deformation of the latching claw part 4. FIG. Then, the locking claw portion 4 bends and returns to a position where it can interfere with the claw receiving portion 14 of the protruding portion 10. When the protruding portion 10 is further inserted into the insertion hole 3 from this state, the tip of the claw receiving portion 14 is inserted while pressing the leaf spring portion 6. When the protruding portion 10 abuts against the restricting protruding wall 7, further insertion is prevented. Thereby, excessive deformation of the leaf spring portion 6 due to excessive insertion of the protruding portion 10 is prevented.

  When the insertion of the projecting portion 10 is stopped at a position where the projecting portion 10 abuts against the restricting projecting wall 7 or a position in front of it, the leaf spring portion 6 is elastically deformed. As shown in FIG. 4B, the protruding portion 10 is moved to a position where the claw receiving portion 14 is locked to the locking claw portion 4 by the elastic return deformation of the leaf spring portion 6, and the claw receiving portion 14 is the leaf spring. It is locked to the locking claw portion 4 in a state where the elastic restoring force of the portion 6 is received. In other words, the claw receiving portion 14 is sandwiched between the locking claw portion 4 and the leaf spring portion 6. Thus, as shown in FIG. 3B, the two casings 1A and 1B are connected.

  As described above, in the connection structure of the housings according to the first embodiment, the housing 1A is provided with the locking claw portion 4 that is a locking portion, and the housing 1B is engaged with the locking claw portion 4. A backlash suppressing portion that is provided with a claw receiving portion 14 that is a mating side locking portion to be stopped and that urges the claw receiving portion 14 in the locking direction in a state where the locking claw portion 4 is locked to the claw receiving portion 14. A leaf spring portion 6 is provided. Therefore, backlash in the connecting direction M between the two casings 1A and 1B can be prevented.

  The two casings 1A and 1B are substantially connected in a state in which the connecting surfaces 2a are in contact with each other. An insertion hole 3 is opened in the connecting surface 2a of the casing 1A, and an insertion hole 3 is formed in the casing 1B. A protruding portion 10 to be inserted is provided, a claw receiving portion 14 that is a locking portion is provided in the insertion hole 3, and a claw receiving portion 14 that is a counterpart locking portion is provided in the protruding portion 10. Therefore, when the two casings 1A and 1B are connected, the insertion hole 3 is hardly exposed to the outside, and the protruding portion 10 is hardly visible from the outside.

  In the first embodiment, the locking portion is an elastically deformable locking claw portion 4, and each counterpart locking portion is allowed to be inserted into the insertion hole 3 due to the elastic deformation of the locking claw portion 4. This is a claw receiving portion 14 to which the locking claw portion 4 is locked by elastic return deformation of the locking claw portion 4.

  In the first embodiment, the backlash suppressing portion is a leaf spring portion 6 that is elastically deformed in the process of inserting the protruding portion 10 into the insertion hole 3. Therefore, the backlash in the connecting direction M between the two housings 1A and 1B can be reliably prevented by the elastic return force of the leaf spring portion 6.

  A restricting protruding wall 7 is provided as an excessive insertion preventing portion. Therefore, since the protrusion 10 is inserted only up to a position where the insertion tip of the protrusion 10 abuts against the restricting protrusion 7, excessive deformation of the leaf spring portion 6 can be prevented.

(Second Embodiment)
5 and 6 show a second embodiment of the present invention. In the second embodiment, compared to the first embodiment, the configurations of the backlash suppressing portion and the excessive insertion preventing portion are different.

  As shown in FIG. 5, the backlash suppressing portion and the excessive insertion preventing portion include a pair of spring receiving portions 15 protruding from the insertion tip of the protruding portion 10 and on both outer sides of the claw receiving portion 14, and a locking claw. It is formed from a leaf spring portion 6 supported on a surface opposite to the surface on which the portion 4 is supported. The distal end side of the leaf spring portion 6 is located on the insertion locus of the pair of spring receiving portions 15.

  That is, the pair of spring receiving portions 15 and the leaf spring portion 6 serve as the backlash suppressing portion and the excessive insertion preventing portion.

  Since other configurations are the same as those of the first embodiment, description thereof will be omitted.

  Next, a connection operation between the casings 1A and 1B will be described. As shown in FIG. 6 (a), when the protruding portion 10 is inserted into the insertion hole 3, the claw receiving portion 14 is inserted to a position over the locking claw portion 4 due to elastic deformation of the locking claw portion 4. Then, the locking claw portion 4 is bent and returned and returned to a position where it can interfere with the claw receiving portion 14 of the protrusion 10. When the protruding portion 10 is further inserted into the insertion hole 3 from this state, the protruding portion 10 is inserted while the pair of spring receiving portions 15 presses the leaf spring portion 6.

  The leaf spring portion 6 can be elastically deformed and deformed only up to a position where the tip of the leaf spring portion abuts against the surface of the insertion hole 3. Therefore, the protruding portion 10 can be inserted only to a position where the tip of the leaf spring portion 6 hits the surface of the insertion hole 3. Thereby, the excessive insertion of the protrusion part 10 is controlled.

  When the insertion of the protruding portion 10 is stopped at a position where the leaf spring portion 6 cannot be elastically deformed and deformed (a position where the tip of the leaf spring portion 6 abuts against the surface of the insertion hole 3) or a position in front thereof, the leaf spring portion 6 is elastic Return deformation. As shown in FIG. 6B, the protruding portion 10 is moved to a position where the claw receiving portion 14 is locked to the locking claw portion 4 by the elastic return deformation of the leaf spring portion 6, and the claw receiving portion 14 is the leaf spring. It is locked to the locking claw portion 4 in a state where the elastic restoring force of the portion 6 is received. In other words, the claw receiving portion 14 is held between the leaf spring portion 6 via the locking claw portion 4 and the pair of spring receiving portions 15. Thus, the housings 1A and 1B are connected.

  As mentioned above, also in this 2nd Embodiment, the backlash of the connection direction M between the two housing | casing 1A, 1B can be prevented for the reason similar to the said 1st Embodiment.

  In the second embodiment, the leaf spring portion 6 is cantilevered on the surface of the insertion hole 3, and is provided so that the tip abuts against the opposing surface of the insertion hole 3 by a predetermined or greater elastic deformation. Accordingly, the insertion of the protruding portion 10 into the insertion hole 3 can be performed only up to the position where the leaf spring portion 6 abuts against the surface of the insertion hole 3, so that excessive insertion of the protruding portion 10 and excessive deformation of the leaf spring portion 6 can be prevented. .

(Other)
In each of the above embodiments, the locking claw portion 4 of the housing 1A is formed so as to be elastically deformed, and the claw receiving portion 14 of the protruding portion 10 is formed so as not to be elastically deformed. It may be formed so as to be elastically deformed, and the claw receiving portion 14 may be formed so as not to be elastically deformed. Moreover, you may form so that both the latching claw part 4 and the nail | claw receiving part 14 may elastically deform together. Further, the locking portion and the other-side locking portion do not have to be claw-shaped, and may be any structure that is locked to each other by insertion of the protruding portion 10 into the insertion hole 3.

  In each said embodiment, although the backlash suppression part is provided in the housing | casing 1A side, you may provide a backlash suppression part in the housing | casing 1B side.

  In each of the embodiments described above, the case where two cases 1A and 1B are connected has been described. However, the connection structure of the present invention can also be applied to a case where three or more cases are connected.

  In each said embodiment, although the insertion part is the insertion hole 3 opened to the connection surface 2a, the groove part opened to the connection surface 2a may be sufficient.

1A, 1B Housing 2a Connecting surface 3 Insertion hole (insertion part)
4 Locking claw (locking part)
6 Leaf spring part (backlash suppression part, excessive insertion prevention part)
7 Projection wall (over-insertion prevention part)
10 Protruding part 14 Claw receiving part (mating side locking part)
15 Spring receiving part (over-insertion prevention part)

Claims (5)

Either one of the two housings is provided with a locking portion, and the other is provided with a mating locking portion that locks to the locking portion,
A connecting structure for a housing, wherein a backlash suppressing portion that biases the mating locking portion in the locking direction is provided in a state where the locking portion is locked to the mating locking portion. . It is the connection structure of the housing | casing of Claim 1, Comprising:
Two said housings are connected in a state of contacting each other's connecting surfaces,
An insertion part is opened on the connection surface of any one of the casings, and a projection part inserted into the insertion part is provided on the other side.
The connecting structure for a housing, wherein the engaging portion is provided in one of the insertion portion and the protruding portion, and the other-side engaging portion is provided in the other. It is the connection structure of the housing | casing of Claim 1 or Claim 2, Comprising:
The locking part is an elastically deformable locking claw part,
Each of the mating locking portions is a claw receiving portion that is allowed to be inserted into the insertion portion by elastic deformation of the locking claw portion, and that the locking claw portion is locked by elastic return deformation of the locking claw portion. A connecting structure for a housing, characterized in that It is the connection structure of the housing | casing in any one of Claim 2 or Claim 3, Comprising:
In the insertion process of the protruding portion into the insertion portion, the backlash suppressing portion is pressed by the protruding portion to be elastically deformed, and the locking claw portion is locked in the counterpart locking portion. A housing connecting structure, characterized in that it is a leaf spring portion that elastically bends the counterpart locking portion in the locking direction and urges it with a restoring force. It is the connection structure of the housing | casing in any one of Claims 1-4,
An over-insertion preventing portion for restricting excessive insertion of the protruding portion into the insertion portion is provided.

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