JP2007089268A - Lock structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock structure which can improve the mutual retentivity of a pair of parts that are assembled with each other. <P>SOLUTION: This lock structure is for a junction connector holder 10 and a relay box 50 assembled with each other, and the relay box 50 has a lock part 54 at the external face of its sidewall 53, and the junction connector holder 10 is equipped with a cover wall 11, which is arranged outside the sidewall 53 provided with the lock part 54 for the relay box 50. The cover wall 11 has a lock projection 12 to lock with the lock part 54, on a surface facing the outer wall of the sidewall 53 provided with the lock part 54 of the relay box 50, and lock projection 12 is engaged with the lock part 54, going over outward the lock part 54. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lock structure for a set of parts assembled to each other.

  FIG. 6 shows an example of a conventional lock structure for a set of parts assembled together (see, for example, Patent Document 1). The lock structure shown in FIG. 6 is a lock structure of a base member 101 and a cover member 102 that constitute a clamp 100 that holds a wire harness W routed in a vehicle body of an automobile.

  The wire harness W is accommodated in a space having a substantially circular cross section defined between the recess 101 a of the base member 101 and the upper wall 102 a of the cover member 102. Then, on the outer surface of the left and right side walls 101b defining the recess 101a of the base member 101, a pair of arm portions projecting perpendicularly to the outer surface and an engaging wall 103a bridged at the tips of the pair of arm portions. The engaging portions 103 each having a frame shape are provided. Further, on both left and right side walls 102b suspended from the upper wall 102a of the cover member 102, locking claws 104 are further extended from the respective lower ends.

  The cover member 102 inserts the locking claw 104 into the frame-shaped engaging portion 103 of the base member 101, and the locking projection 104 a provided at the tip of the locking claw 104 is engaged with the engaging wall of the engaging portion 103. The base member 101 is assembled by engaging with the lower end edge of 103a. Then, the base member 101 and the cover member 102 are locked in a state where they are assembled with each other by the engaging portion 103 and the locking claw 104.

JP 2003-158810 A

  In the lock structure of Patent Document 1, the locking claw 104 is inserted into the frame-shaped engaging portion 103, and the locking projection 104a of the locking claw 104 is engaged with the engaging wall 103a from the inside of the engaging portion 103. Therefore, the locking claw 104 is formed in a tongue-like shape supported only at the upper end, and the width and thickness thereof are limited by the inner dimensions of the frame-shaped engaging portion 103. For this reason, it is not easy to ensure the strength of the locking claw 104, and there is a possibility that the engagement between the locking claw 104 and the engaging portion 103 is released or the locking claw 104 is damaged due to the twisting of the cover member 102. Moreover, there is a possibility that rattling occurs in the cover member 102. Thus, the mutual holding force of the base member 101 and the cover member 102 was not sufficient. In this regard, in Patent Document 1, the base member 101 and the cover member 102 are tightened together in a reinforcing manner with a bolt 105 that fixes the clamp 100 to the vehicle body.

  This invention is made | formed in view of the situation mentioned above, The objective is to provide the lock structure which can improve the mutual holding force of the set of components mutually assembled | attached.

  In order to achieve the above object, the lock structure of the present invention is characterized by the following (1) to (6).

(1) A lock structure for a set of parts assembled to each other,
One part has a lock on the outer surface of its side wall,
The other part includes a cover wall disposed outside a side wall provided with the lock portion of the one part,
The cover wall has a lock protrusion that engages with the lock portion on a surface facing the outer surface of the side wall provided with the lock portion of the one part;
The lock structure, wherein the lock protrusion climbs outward from the lock portion and engages with the lock portion.

  (2) The other component is provided with a structural material that is joined to intersect the cover wall and that holds the edge of the side wall provided with the lock portion of the one component. The lock structure according to (1).

  (3) The lock according to (1), wherein the other component includes a rib disposed opposite to the cover wall across a side wall provided with the lock portion of the one component. Construction.

(4) The one part has a second lock portion on the inner surface of the side wall provided with the lock portion,
The rib has a second locking protrusion that engages with the second locking portion on a surface facing the inner surface of the side wall provided with the second locking portion of the one component.
(2) The lock structure according to (3), wherein the second lock protrusion climbs outward from the second lock portion and engages with the second lock portion.

  (5) The other part is provided with a structural material that is joined to intersect the cover wall and that holds the edge of the side wall provided with the lock portion of the one part. The lock structure according to (3) or (4).

  (6) The lock structure according to (5), wherein the structural material is bridged between the cover wall and the rib.

  According to the lock structure of the above configuration (1), the lock projection of the other part is engaged with the lock part of one part from the outside of the lock part, and both are locked. The cover wall provided with the lock protrusion is disposed outside the side wall provided with the lock portion of one part. Therefore, the width and thickness of the cover wall are not particularly limited, and the cover wall is not limited to a tongue shape and can take various shapes. Therefore, it is possible to improve the strength of the cover wall, thereby preventing disengagement between the lock protrusion and the lock portion due to the parts being twisted, damage to the cover wall, and preventing rattling of the parts. Can do.

  According to the lock structure having the above configuration (2), the strength of the cover wall against twisting and bending is improved by the structural material joined across the cover wall. The edge of the side wall provided with the lock part is held down, which prevents the lock protrusion and the lock part from being disengaged due to parts being twisted and the cover wall from being damaged more reliably. It is possible to prevent rattling more reliably.

  According to the lock structure having the configuration of (3) above, the side wall provided with the lock portion of one part is sandwiched between the cover wall and the rib, thereby further reliably preventing the rattling of the part. In addition, it is possible to regulate the part twisting, and to more reliably prevent the engagement between the lock protrusion and the lock portion and the damage to the cover wall due to the part twisting. Furthermore, the assembly of the other part to the one part is guided by the rib extending along the side wall provided with the lock portion of the one part, whereby the assembly of both parts can be facilitated.

  According to the lock structure having the configuration of (4) above, the side wall provided with the lock portion of one part is sandwiched between the cover wall and the rib, and the lock protrusion on the cover wall is engaged with the lock portion on the outer surface of the side wall. In addition, the lock projection of the rib can be engaged with the second lock portion on the inner surface of the side wall, so that the side wall of one part can be held double by the cover wall and the rib.

  According to the lock structure configured as described in (5) above, the structural material joined across the cover wall improves the strength of the cover wall against torsion and bending, and the structural material further serves as a lock portion of one part. This prevents the edge of the side wall provided with the lock from being disengaged between the lock projection and the lock part and the cover wall due to the parts being twisted. Sticking can be prevented more reliably.

  According to the lock structure having the above configuration (6), the cover wall and the rib are integrated by the structural material bridged between the cover wall and the rib. Therefore, the strength of the cover wall and the rib can be further improved, thereby more reliably preventing the lock protrusion and the lock portion from being disengaged and the cover wall from being damaged due to the parts being twisted. Shaking can be prevented more reliably.

  Thus, according to the lock structure of the present invention, it is possible to improve the mutual holding force of a set of components assembled to each other.

  Hereinafter, preferred embodiments of the lock structure of the present invention will be described in detail with reference to the drawings.

(First embodiment)
1 is a front view of a relay box and a junction connector holder to which the lock structure of the present invention is applied according to a first embodiment of the lock structure of the present invention. FIG. 2 is a bottom view of the relay box shown in FIG. FIG. 2 is an enlarged perspective view of a main part of a junction connector holder and a relay box shown in FIG. 1.

  As shown in FIG. 1, the lock structure of this embodiment is applied to a relay box 50 and a junction connector holder 10 that is assembled to the relay box 50.

  As shown in FIGS. 1 and 2, the relay box 50 includes a housing 51 made of, for example, a resin and formed in a substantially rectangular box shape, and the interior of the housing 51 is partitioned into a plurality of blocks. Is provided with a mounting portion 52 on which various electronic components such as a relay and a fuse are mounted. The predetermined block mounting portion 52 is open to the outside at the bottom surface of the housing 51, and the junction connector holder 10 is assembled at a position corresponding to the predetermined block at the bottom portion of the housing 51.

  The junction connector holder 10 is made of, for example, the same resin as the housing 51 of the relay box 50, and holds a bus bar, a plurality of terminals respectively connected to a wire group of a wire harness (not shown), and the like. The terminal portions provided on the plurality of terminals and the bus bar are connected to tab terminals of various electronic components mounted on the mounting portion 52 of the predetermined block of the relay box 50 to form a predetermined circuit.

  The outer surface of the side wall 53 defining the predetermined block to which the junction connector holder 10 is assembled at the bottom of the housing 51 is engaged with a plurality of lock protrusions 12 (see FIG. 3) of the junction connector holder 10 to be described later. A plurality of locking portions 54 are provided.

  With reference to FIG. 3, the lock structure between the junction connector holder 10 and the relay box 50 will be described in detail. FIG. 3 shows only one of the plurality of lock projections 12 of the junction connector holder 10 and its periphery, the lock portion 54 of the relay box 50 corresponding to the lock projection 12 and its periphery, and the other lock projections. 12 and the lock portion 54 have the same structure, and thus the description thereof is omitted.

  The lock portion 54 of the relay box 50 is provided on the outer surface of the side wall 53 of the housing 51, and a pair of arm portions 54a and 54a extending parallel to each other in the assembly direction of the junction connector holder 10 and the ribs 54a and 54a. The engaging wall 54b bridged on the lower (bottom) front edge forms a frame shape as a whole. That is, the lock portion 54 corresponds to the engagement portion 103 (see FIG. 6) in the above-described conventional lock structure in its configuration, and can be inserted with a member corresponding to the locking claw 104 (see FIG. 6). Yes.

  The lock protrusion 12 of the junction connector holder 10 that engages with the lock portion 54 is a flat cover wall 11 that is disposed outside the side wall 53 of the housing 51 in a state where the junction connector holder 10 is assembled to the relay box 50. Are projected from the inner surface, that is, the surface facing the side wall 53. The lock protrusion 12 is formed to be inclined so that the protrusion height from the inner surface of the cover wall 11 increases toward the lower end. A structural member 13 is joined to the inner surface of the cover wall 11 below the lock protrusion 12 so as to be substantially orthogonal to the inner surface of the cover wall 11. In addition, the cover wall 11 may be a thing protruding from the upper wall of the junction connector holder 10, or may be an extension of the side wall. In addition, the structural material 13 reinforces the cover wall 11, and the shape thereof is not limited as long as the structural material 13 is joined to the cover wall 11 so as to intersect the inner surface of the cover wall 11.

  When the junction connector holder 10 is assembled to the relay box 50, the lock protrusion 12 slides on the lower end edge of the engagement wall 54b of the lock portion 54 while bending the cover wall 11 away from the side wall 53. Then, it goes over the engagement wall 54b outward and engages with the upper edge of the engagement wall 54b. Thereby, the junction connector holder 10 and the relay box 50 are locked. In this locked state, the structural member 13 abuts on the lower end edge of the engagement wall 54b of the lock portion 54 at the upper end, and holds the lower end edge.

  As described above, according to the lock structure of the present embodiment, the lock protrusion 12 of the junction connector holder 10 is engaged with the lock portion 54 of the relay box 50 from the outside of the lock portion 54 and the both are locked. The cover wall 11 provided with the lock protrusion 12 of the junction connector holder 10 is disposed outside the side wall 53 provided with the lock portion 54 of the relay box 50. Accordingly, the width and thickness of the cover wall 11 are not particularly limited, and the cover wall 11 is not limited to a tongue shape and can take various shapes. For example, a rib extending in the vertical direction at the center in the width direction of the cover wall 11 may be provided on the outer surface of the cover wall 11 so as to have a T-shaped cross section as a whole. Therefore, the strength of the cover wall 11 can be improved, thereby preventing the engagement between the lock protrusion 12 and the lock portion 54 and the damage of the cover wall 11 due to the twisting of the junction connector holder 10 or the relay box 50, Further, rattling of the junction connector holder 10 and the relay box 50 can be prevented.

  Further, according to the lock structure of the present embodiment, the strength of the cover wall 11 against torsion and bending is improved by the structural material 13 that is joined to intersect with the cover wall 11, and the structural material 13 is further connected to the relay. The lower end edge of the side wall 53 provided with the lock part 54 of the box 50 is pressed, and thereby, the engagement between the lock protrusion 12 and the lock part 54 due to the twisting of the junction connector holder 10 or the relay box 50 and the cover are covered. Breakage of the wall 11 can be prevented more reliably, and rattling of the junction connector holder 10 and the relay box 50 can be more reliably prevented.

  In addition, the lock portion 54 corresponds to the engagement portion 103 (see FIG. 6) in the conventional lock structure described above, and can be inserted with a member corresponding to the locking claw 104 (see FIG. 6). According to the lock structure of this embodiment, the existing relay box 50 can be used only by changing the junction connector holder 10 provided with the lock protrusion 12.

(Second Embodiment)
Next, with reference to FIG. 4, 2nd Embodiment of the locking structure of the junction connector holder based on this invention is described. In addition, about the member etc. which have the structure and effect | action similar to the member already demonstrated in the lock structure of 1st Embodiment, description is simplified by attaching | subjecting the same code | symbol in a figure.

  FIG. 4 is an enlarged perspective view of main parts of a junction connector holder and a relay box according to a second embodiment of the lock structure of the present invention.

  As shown in FIG. 4, in the lock structure of the present embodiment, the junction connector holder 10 includes a rib 14 that is disposed opposite to the cover wall 11 with a side wall 53 provided with a lock portion 54 of the relay box 50 interposed therebetween. Yes. The rib 14 includes a base end portion 14a projecting from a side wall of the junction connector holder 10 disposed so as to be substantially orthogonal to the cover wall 11, and a lock protrusion of the cover wall 11 upward from the base end portion 14a. 12 and a tip portion 14b extending to a height position in the vicinity of 12. And the structural material 13 is bridged between the cover wall 11 and the base end part 14a of the rib 14, and both are connected integrally.

  According to the lock structure of the present embodiment, in addition to the effects of the lock structure of the first embodiment, the side wall 53 provided with the lock portion 54 of the relay box 50 is sandwiched between the cover wall 11 and the rib 14, thereby Further, rattling of the junction connector holder 10 and the relay box 50 can be prevented more reliably, and the twisting of the junction connector holder 10 and the relay box 50 can be regulated to prevent the junction connector holder 10 and the relay box 50 from being twisted. Thus, it is possible to more reliably prevent the engagement between the lock projection 12 and the lock portion 54 and the breakage of the cover wall 11 from occurring. Furthermore, the assembly of the junction connector holder 10 to the relay box 50 is guided by the rib 14 being along the side wall 53 provided with the lock portion 54 of the relay box 50, thereby facilitating the assembly of both. it can.

  Further, according to the lock structure of the present embodiment, the cover wall 11 and the rib 14 are integrated by the structural member 13 bridged between the cover wall 11 and the rib 14. Therefore, the strength of the cover wall 11 and the rib 14 can be further improved. As a result, the engagement between the lock projection 12 and the lock portion 54 and the damage to the cover wall 11 due to the twisting of the junction connector holder 10 and the relay box 50 can be achieved. Can be more reliably prevented, and rattling of the junction connector holder 10 and the relay box 50 can be more reliably prevented.

(Third embodiment)
Next, with reference to FIG. 5, 3rd Embodiment of the locking structure of the junction connector holder based on this invention is described. In addition, about the member etc. which have the structure and effect | action similar to the member already demonstrated in the lock structure of 1st Embodiment and 2nd Embodiment, description is simplified by attaching | subjecting the same code | symbol in a figure.

  FIG. 5 is an enlarged perspective view of main parts of a junction connector holder and a relay box according to a third embodiment of the lock structure of the present invention.

  As shown in FIG. 5, in the lock structure of the present embodiment, the junction connector holder 10 includes a rib 15 that is disposed to face the cover wall 11 with a side wall 53 provided with a lock portion 54 of the relay box 50 interposed therebetween. Yes. The structural member 13 is bridged between the cover wall 11 and the rib 15.

  The side wall 53 of the relay box 50 is provided with a lock hole 55 that penetrates the side wall 53, and the second lock protrusion 16 that engages with the lock hole 55 is formed on the surface of the rib 15 that faces the side wall 53. Projected. Similar to the lock protrusion 12 provided on the cover wall 11, the second lock protrusion 16 is formed to be inclined so that the protruding height from the inner surface of the cover wall 11 increases toward the lower end.

  When the junction connector holder 10 is assembled to the relay box 50, the lock projection 12 of the cover wall 11 engages with the lock portion 54 provided on the outer surface of the side wall 53 of the relay box 50 as described above, and this second The locking projection 16 slides on the lower edge of the side wall 53 while bending the rib 15 in a direction away from the side wall 53, and climbs outward on the peripheral edge defining the lock hole 55 of the side wall 53. Engaging the peripheral edge. That is, the lock hole 55 functions as a second lock portion provided on the inner surface of the side wall 53.

  According to the lock structure of the present embodiment, the side wall 53 provided with the lock portion 54 of the relay box 50 is sandwiched between the cover wall 11 and the rib 15, and the lock protrusion 12 of the cover wall 11 is further locked to the lock portion on the outer surface of the side wall 53. 54 and the lock projection 16 of the rib 15 is engaged with the lock hole 55 which is the second lock portion of the inner surface of the side wall 53, and the side wall 53 of the relay box 50 is formed by the cover wall 11 and the rib 15. It can be held twice.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

FIG. 4 is a front view of a relay box and a junction connector holder to which the lock structure of the present invention is applied according to the first embodiment of the lock structure of the present invention. It is a bottom view of the relay box shown in FIG. It is a principal part expansion perspective view of the junction connector holder and relay box shown in FIG. It is a principal part expansion perspective view of a junction connector holder and a relay box concerning 2nd Embodiment of the lock structure of the present invention. It is a 3rd embodiment of the lock structure of the present invention, and is a principal part expansion perspective view of a junction connector holder and a relay box. It is sectional drawing of the conventional lock structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Junction connector holder 11 Cover wall 12 Lock protrusion 13 Structural material 14 Rib 15 Rib 16 2nd lock protrusion 50 Relay box 51 Housing 53 Side wall 54 Lock part 55 Lock hole (2nd lock part)

Claims (6)

It is a lock structure of a set of parts that can be assembled together,
One part has a lock on the outer surface of its side wall,
The other part includes a cover wall disposed outside a side wall provided with the lock portion of the one part,
The cover wall has a lock protrusion that engages with the lock portion on a surface facing the outer surface of the side wall provided with the lock portion of the one part;
The lock structure, wherein the lock protrusion climbs outward from the lock portion and engages with the lock portion.   The said other component is provided with the structural material which cross | intersects and joins the said cover wall, and presses the edge of the side wall in which the said lock part of the said one component was provided. Lock structure as described in.   2. The lock structure according to claim 1, wherein the other part includes a rib disposed opposite to the cover wall with a side wall provided with the lock portion of the one part interposed therebetween. The one component has a second lock portion on the inner surface of the side wall provided with the lock portion,
The rib has a second locking protrusion that engages with the second locking portion on a surface facing the inner surface of the side wall provided with the second locking portion of the one component.
4. The lock structure according to claim 3, wherein the second lock protrusion climbs outward from the second lock portion and engages with the second lock portion. 5.   The said other part is crossed and joined to the said cover wall, The structural material which stops the edge of the side wall in which the said lock part of the said one part was provided is provided. Or the lock structure of Claim 4.   The lock structure according to claim 5, wherein the structural member is bridged between the cover wall and the rib.

Images