JP3454730B2 - Lock structure of assembly parts - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gutter-shaped or box-shaped main body, such as a protector or a relay box, and a cover for covering an opening of the main body. And a lock structure for an assembly part comprising: 2. Description of the Related Art When laying an electric wire such as a wire harness on a vehicle body floor or the like, an assembly part such as a protector is used to insert and protect the electric wire. FIG.
1 shows a conventional assembly 1 described in Japanese Patent Publication No. 252634. The assembly component 1 includes a gutter-shaped main body 2 in which an electric wire is inserted and inserted, and a cover 3 that covers an opening on the upper surface of the main body 2. On the outer surface of the side wall 4 of the main body 2,
A locking frame 5 is provided so as to protrude so as to form an insertion hole 5a with the side wall 4. A locking piece 6 having a locking projection 6a at the side end of the cover 3 hangs down. In this assembled part, the cover 3 is attached so as to cover the upper surface of the main body 2, and the locking piece 6 is inserted into the insertion hole 5a of the locking frame 5, so that the locking projection 6a and the locking frame are formed. 5 is locked. Thereby, the cover 3 is not locked by the main body 2 and does not come off from the main body 2, so that the electric wires inside the main body 2 can be protected. However, in this structure, since the locking frame 5 and the locking pieces 6 protrude outward and protrude, the assembled component 1 cannot be brought into close contact with a mounting portion such as a vehicle body floor, and the storage space is wide. In need of. or,
The protruding locking frame 5 and locking piece 6 may be caught by external members and damaged. FIGS. 9 to 11 show another conventional assembled part 11 in which such a protruding portion is eliminated. This assembly part 1
1 is a main body 12 formed in a gutter shape by a bottom wall 12a and a pair of side walls 12b, 12b erected from the bottom wall 12a.
And a cover 13 that covers the opening on the upper surface of the main body 12. A plurality of locking frames 1 are provided at the four corners in the main body 12.
4 are provided. Each locking frame 14 has a side wall 12
b, bent piece 1 extending inward of body 12 from the inner surface of 12b
5 so that an insertion hole 16 is formed between the side walls 12b and 12b. On the other hand, 4 on the bottom surface of the cover 13
Locking claws 17 inserted into the insertion holes 16 of the main body 12 are formed at the corners. This locking claw 17 has
As shown in FIG. 11C, a locking portion 17a that locks with the locking frame 14 protrudes laterally. In this structure, the cover 13 is put on the main body 12 so that the locking claws 17 of the cover 13 are inserted into the insertion holes 16 of the main body 12, and the locking portions 17 a of the locking claws 17 are fitted to the locking frame 14. The cover 13 is locked by being locked to the main body 12. Since the locking claw 17 and the locking frame 14 are locked inside the main body 12 in this manner, they do not protrude outward, so that they can be closely attached to the mounting portion, and a large storage space is not required. In addition, the locking claws 17 and the locking frame 14 are not damaged by being caught by the external members. In the structure shown in FIGS. 9 to 11, however, the locking between the locking claw 17 for locking the cover 13 and the locking frame 14 is performed inside the main body 12. Therefore, there is an inconvenience that the lock cannot be released after the locking. Therefore, the present invention provides a lock structure of an assembly part which can easily perform an unlocking operation even in a structure in which a cover is locked inside a main body. With the goal. [0010] In order to achieve the above object, the invention of claim 1 comprises a main body having a side wall erected on a bottom wall, and a cover for covering an opening of the main body. Inserted inside the body at the bottom of the cover of the assembly
Provided with a locking projection having a projection, forming the locking projection capable of engaging the engaging stepped portion provided on the inner surface of the side wall of said body, said locking projection on the bottom wall of the main body to the projecting portion Inclined
A jig insertion hole into which an external release jig that is bent in the unlocking direction by abutting against the surface is provided, and the locking projection is provided on the inner surface of the side wall of the main body in a non-exposed state.
A locking hole that is inserted and communicates with the jig insertion hole.
The locking step is formed in the upper part of the locking hole . According to the present invention, the cover is put on the main body so as to cover the opening of the main body, so that the locking projection of the cover is inserted into the interior of the main body, and the locking step is provided on the inner surface of the side wall of the main body. Then the cover is locked. Therefore, the cover can be locked inside the main body, and since the locking projection and the locking step do not protrude to the outside, the assembly can be brought into close contact with the mounting portion. The locking step is not damaged. On the other hand, a release jig is inserted into a jig insertion hole provided in the bottom wall of the main body. Since the inserted release jig deflects the locking projection in the locking releasing direction, the locking projection retreats from locking with the locking step. For this reason, the locking of the locking projection and the locking step is released, and the cover is released from the locked state. Therefore, even if the cover is locked inside the main body, the lock can be easily released, which is convenient for use. Further, in the present invention, since the locking projection is inserted into the locking hole in a state where it is not exposed, the locking projection is locked with the locking step provided above the locking hole. There is no exposure inside the body. Therefore, when the cover is locked, the locking projection does not interfere with the electric wires and the like inside the main body, and does not damage them. Further, since the release jig is also inserted into the locking hole, it is not exposed in the main body. Therefore, even when the unlocking is released by inserting the releasing jig, the electric wires and the like in the main body are not damaged. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. 1 to 7 show an embodiment of the present invention, and FIG. 1 is an overall perspective view. The lock structure of the assembly part 21 of this embodiment includes a main body 22 shown in FIGS. 2 (a), 2 (b) and 2 (c) and a cover 23 shown in FIGS. 3 (a), 3 (b) and 3 (c).
And The main body 22 and the cover 23 are formed of an insulating resin. The main body 22 is composed of a horizontally long bottom wall 24 and a pair of side walls 25, 25 erected along the length of the bottom wall 24, and the whole is opened by opening both ends in the length direction. It has a horizontally elongated gutter shape. The upper surface of the main body 22 is an opening 26 that is open. Inside the main body 22, an electric wire (not shown) such as a wire harness is accommodated in an inserted state. The cover 23 covers the opening 26 of the main body 22, and is a flat plate having a length and a width substantially equal to those of the main body 22. At four corners of the bottom surface 23a of the cover 23, locking projections 27 are protrudingly provided. 4
As shown in FIG. 3 (b), each of the locking projections 27 at the corners has a pair of arms 27a hanging down from the bottom surface 23a of the cover 23, and extends from the lower end of each arm 27a in the longitudinal direction of the cover 23. And a pair of protrusions 27b protruding toward the opposite side. Since the pair of protrusions 27b protrude on the opposite side along the length direction of the cover 23 in this manner, the locking protrusion 27
To the main body 22 along the length direction of the main body 22.
Even if the cover 23 is horizontally long, the cover 23 can be securely locked. At four corners of the main body 22, locking holes 28 corresponding to the locking projections 27 of the cover 23 are formed. The locking hole 28 forms a thick portion 29 which becomes thicker from both ends in the longitudinal direction of the inner surfaces 25 a of the side walls 25, 25 toward the inside of the main body 22.
9 is formed by hollowing out in the vertical direction. The thickened portion 29 is provided so as to be bent continuously from the inner surface 25a of the side wall 25 toward the inside of the main body 22, and is provided continuously from the tip of the bent wall portion 29a so as to be parallel to the side wall 25. The locking hole 28 is formed of a side wall 25, a bent wall portion 29 a, and a cover wall portion 2.
9b. For this reason, the locking hole 28 is formed by the cover 2
2, the locking projection 27 of the cover 23 is not exposed to the inside of the main body 22 as described later. A pair of locking steps 30 are formed above each locking hole 28. As shown in FIG. 2 and FIGS. 4 to 7, the pair of locking step portions 30 approach each other in the direction of decreasing the width of the locking hole 28 from both sides in the width direction at the upper part in the locking hole 28, that is, approach each other. It is formed by protruding in the direction in which As will be described later, the amount of protrusion of the pair of locking steps 30 is such that the locking projection 27 of the cover 23 slides while flexing and is inserted into the locking hole 28, and the locking projection 2
7 is inserted into the locking hole 28, the protrusion 2 of the locking projection 27 is formed.
7b is set to be locked. Further, a pair of jig insertion holes 31 communicate with the respective locking holes 28. As shown in FIG. 7, a pair of jig insertion holes 31 is provided with a release jig (see FIG. 7) 32.
Is inserted into the locking hole 28.
The bottom wall 24 is formed by opening a portion corresponding to the locking hole 28. Further, the pair of jig insertion holes 31 are formed on the bottom wall 2 so as to correspond to the pair of locking steps 30.
4, when the release jig 32 is inserted into the locking hole 28 from the jig insertion hole 31, the release jig 32 can move toward the locking step 30. . Next, an operation of locking the cover 23 to the main body 22 and an operation of releasing the lock according to this embodiment will be described. As shown in FIGS. 1 and 4, the cover 23 is locked by pushing down the cover 23 while covering the opening 26 on the upper surface of the main body 22. This allows
The locking projection 27 is inserted into a locking hole 28 provided inside the main body 22, as shown in FIG. At this time, the protrusion 27b
Slides on the locking step portions 30 above the locking holes 28, so that the pair of locking projections 27 are inserted into the locking holes 28 while elastically bending. Further, since the cover wall portion 29b of the thick portion 29 forming the locking hole 28 blocks the inside of the main body 22, the locking projection 27 is in the locking hole 28 and It is not exposed inside the main body 22. When the cover 23 is further pushed down, the projections 27b of the locking projections 27 pass through the locking step 30, so that the pair of locking projections 27 return to their original state by elastic force, as shown in FIG. The projection 27b is locked to the locking step 30. As a result, the cover 23 is locked to the main body 22. To release the lock in the locked state, a release jig 32 is inserted through a pair of jig insertion holes 31 formed in the bottom wall 24 of the main body 22, as shown in FIG. This insertion causes the release jig 32 to move along the inner wall of the locking hole 28, but as described above, the jig inserting hole 31
0, the protrusion 27b of the locking projection 27 locked to the locking step 30 at the end of movement.
Abut. Due to this abutment, the locking projection 27 is bent in a direction opposite to the locking step 30, so that the locking between the locking projection 27 and the locking step 30 is released. Thereby, the cover 23
Can be removed from the main body 22. According to such an embodiment, the cover 23
Is attached to the main body 22, the locking projection 27 of the cover 23 is inserted into the locking hole 28 in the main body 22 and locked with the locking step 30 in the locking hole 28, so that the cover 23 is locked. You. Therefore, the lock of the cover 23 is
The locking projection 27 and the locking step 3
Since the protrusions 0 do not protrude to the outside, the assembly component 21 can be brought into close contact with a mounting portion such as a vehicle body panel, and the locking projection 27 and the locking step 30 are not damaged. Further, by inserting the release jig 32 into the jig insertion hole 31, the locking projection 27 can be bent in the locking releasing direction.
0 is released. Therefore, even if the cover 23 is locked inside the main body, the lock can be easily released, which is convenient for use. Further, since the locking projection 27 is inserted into the locking hole 28 in a non-exposed state, the locking projection 27 is not exposed inside the main body. Therefore, when the cover 23 is locked, the locking projections 27 do not interfere with the wires and the like inside the main body 22 and do not damage them.
The release jig 32 is also inserted into the locking hole 28 so that the main body 2
Since it is not exposed in the inside 2, even when the unlocking is released by using the releasing jig 32, the wires and the like in the main body 22 are not damaged. As described above, according to the first aspect of the present invention, the locking projection of the cover is inserted into the inside of the main body, and is locked with the locking step in the main body, so that the cover is closed. To be locked,
The cover can be locked inside the main body, the assembled parts can be brought into close contact with the mounting portion, and the locking projection and the locking step can be prevented from being damaged. Also, by inserting the release jig into the jig insertion hole, the locking projection can be bent in the locking release direction, so even if the cover is locked inside the main body, the lock can be released easily. Can be performed easily, and it is convenient for use. Further, since the locking projection is inserted into the locking hole, the locking projection is not exposed inside the main body, and the electric wires and the like inside the main body are not damaged. In addition, the release jig is also inserted into the locking hole and is not exposed inside the main body, so that when releasing the lock release, the electric wires and the like inside the main body are not damaged.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view showing a lock structure of an assembly part according to an embodiment of the present invention. FIGS. 2A and 2B show a main body of the assembled component of the embodiment, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG. 3A and 3B show a cover of the assembled part of the embodiment, wherein FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a side view. FIG. 4 is a partial cross-sectional view of the embodiment before assembling. FIG. 5 is a partial sectional view of the embodiment at the time of assembly. FIG. 6 is a partial cross-sectional view illustrating a state where the embodiment is assembled. FIG. 7 is a partial cross-sectional view showing a state where a release jig is inserted to release the lock of the cover. FIG. 8 is a perspective view showing a lock structure of a conventional assembly tool. FIG. 9 is a perspective view of a conventional assembly having a structure in which locking is performed inside a main body. 10A and 10B show a main body used in the structure of FIG. 9, in which FIG. 10A is a plan view, FIG. 10B is a front view, and FIG. 10C is a side view. 11A and 11B show a cover used in the structure of FIG. 9, wherein FIG. 11A is a plan view, FIG. 11B is a front view, and FIG. 11C is a side view. DESCRIPTION OF SYMBOLS 21 Assembly part 22 Main body 23 Cover 24 Bottom wall 25 Side wall 26 Opening 27 Locking projection 28 Locking hole 30 Locking step 31 Jig insertion hole 32 Release jig

Claims (1)

(57) [Claim 1] The inside of the main body is provided on the bottom surface of the cover of an assembly part comprising a main body having a side wall erected on a bottom wall and a cover covering an opening of the main body. Projection inserted into
And a locking step on which the locking projection can be locked is provided on the inner surface of the side wall of the main body, and the locking projection is formed on the projection on the bottom wall of the main body . On a slope
A jig insertion hole into which an external release jig that bends in the unlocking direction by abutting is provided, and the locking projection is inserted into the inner surface of the side wall of the main body in a non-exposed state.
And a locking hole communicating with the jig insertion hole is provided.
A locking structure for an assembly part, wherein the locking step is formed in an upper part of the locking hole .