JP2001069641A - Mounting structure of electrical junction box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment and removal from a vehicle body, and prevent looseness. SOLUTION: This electrical junction box 11, of synthetic resin, is integrally formed out of a box-shaped case body 12, a plate-shaped mount 13, a sucker- shaped looseness preventing plate 14 having elasticity. Its mount part 13 involves a rotatable lock switch 16 and a crank-shaped first lock 18 formed integrally with each other via a rotating shaft 17, so that when the lock switch 16 is rotated, the first lock 18 is arranged so as to interlock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electric junction box,
More specifically, the present invention relates to an electrical junction box mounting structure that facilitates mounting and dismounting.

[0002]

2. Description of the Related Art There have been proposed various electric connection boxes for housing various electric devices such as a junction box, a relay box, a fusible link box, and an electric control unit used for an electric circuit of an automobile.

FIG. 7 shows a structure in which a conventional screw connection type electric connection box is fixed to a vehicle body. The box body 42 of the electric connection box 41 made of synthetic resin houses an electric device (not shown), and a rectangular protrusion 43 is formed integrally with the box body 42 at the lower end on the side surface of the box body 42. I have. A circular bolt insertion hole (not shown) is formed in the center of the upper surface of the protrusion 43. A washer 44 is disposed on the upper surface of the protrusion 43 so as to correspond to the bolt insertion hole, and a bolt 45 is inserted into the bolt insertion hole.

A circular through hole 47 is formed in the panel 46 on the vehicle body side so as to correspond to the bolt insertion hole. When the electric connection box 41 is attached to the panel 46, the bolt 45 is inserted into the bolt insertion hole and the through hole 47, and the bolt 45 is screwed to the bolt 45 from the back side of the panel 46 with a nut (not shown). The box 41 is fixed to the vehicle body. The electric connection box 41 is accurately fixed to the panel 46 by being screwed at two or more places, and can withstand vibrations and impacts due to running of the vehicle without coming off.

[0005] An electric junction box of a bracket insertion type as shown in FIG. 8 has also been proposed. The box main body 52 of the synthetic resin electric connection box 51 houses an electric device (not shown), and a fitting portion 53 is formed integrally with the box main body 52 at the lower end of the electric connection box 51.
A through hole 54 is opened from the upper end to the lower end of the center of the fitting portion 53, and a rectangular locking piece 55 is formed inside the through hole 54. A locking claw (not shown) is formed on the locking piece 55.

A bracket 57 is formed in the panel 56 on the vehicle body side so as to be vertically bent so as to correspond to the through hole 54. A locking hole 58 is formed in the bracket 57 so as to correspond to a locking claw provided on the locking piece 55.
Then, at the time of attachment, the electric connection box 51 is fixed to the vehicle body by fitting the bracket 57 and the through hole 54 provided in the fitting portion 53 outside. The electric connection box 51 is accurately fixed to the panel 56 by being fitted at two or more places, and can withstand vibration and impact due to running of the vehicle without coming off.

[0007]

However, in the case of the screw fastening type, the electric connection box 41 is firmly attached to the panel 46 by screwing a bolt 45 and a nut. Therefore, when attaching and detaching the electric junction box 41, it is necessary to attach and detach the bolts 45 one by one using a tool, and the nuts have to be arranged on the back side of the panel 46. It took time to attach and remove the box 41.

In the case of the bracket insertion type, the electric connection box 51 is provided with a bracket 57 and a fitting portion 53.
Are firmly attached to the panel 56 by being fitted so as to correspond to the through holes 54 provided in the panel 56. Therefore, the electric connection box can be easily attached and detached without using a tool. However, at the time of attachment and detachment, the fitting portion 53 moves the engaging claw provided on the engaging piece 55 so that the bracket 57 can be moved. Therefore, it was necessary to provide a gap. For this reason, play is easily generated, and it is very difficult to prevent play.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to make it possible to easily attach and detach a vehicle from a vehicle without using a tool, and to prevent rattling. An object of the present invention is to provide a mounting structure for an electric junction box.

[0010]

According to a first aspect of the present invention, there is provided a case body accommodating an electric device, and a mounting portion protruding outside the case body. An attachment structure for an electric junction box, comprising: fixing means for fixing the mounting portion to the mounted portion, wherein the fixing means is disposed or movable on the upper side of the mounting portion, It is arranged below the mounting portion and interlocks with the knob portion, and can be engaged with the mounted object by being rotated while being inserted into an engaging hole provided in the mounted portion. The gist of the present invention is that a lock portion is further provided, and between the knob portion and the lock portion, there is further provided a backlash preventing means for preventing backlash between the mounting portion and the mounted portion.

According to a second aspect of the present invention, in the electrical junction box mounting structure according to the first aspect, the backlash prevention means is an elastically deformable backlash prevention plate formed below the mounting portion. Is the gist.

According to the third aspect of the present invention, in the electrical junction box mounting structure according to the first aspect, the backlash preventing means is a spring provided between the knob and the mounting portion. Is the gist.

According to a fourth aspect of the present invention, in the electric junction box mounting structure according to any one of the first to third aspects, the lock portion is formed in a flexible clamp structure. The point is that

According to a fifth aspect of the present invention, in the electric junction box mounting structure according to any one of the first to fourth aspects, the locking hole is provided with a detent for the lock portion. The gist of the present invention is that a rotation restricting portion for performing the rotation is provided.

(Function) According to the first aspect of the present invention,
Since the electric connection box is fixed by the rotatable fixing means, the electric connection box can be attached to and detached from the mounting portion without using a tool. Further, in a state where the electric connection box is attached to the attached portion by the fixing means, the backlash preventing means is provided between the knob portion and the lock portion to prevent backlash between the attached portion and the attached portion. Can be.

According to the second aspect of the present invention, the backlash preventing means is formed as an elastically deformable backlash preventing plate, so that the urging force of the backlash preventing plate causes the backlash between the mounting portion and the mounted portion. Play can be reliably prevented.

According to the third aspect of the present invention, since the backlash preventing means is formed as a spring, the mounting portion and the mounted portion are brought into close contact with each other by the biasing force of the spring, thereby preventing the backlash.

According to the fourth aspect of the present invention, since the side surface of the lock portion comes into contact with both ends of the engagement hole, the effect of preventing backlash can be enhanced. According to the fifth aspect of the present invention, since the rotation restricting portion is bent in the engagement hole, the fixing means rotates beyond the amount of rotation necessary for mounting the electric connection box to the mounting portion. Can be regulated.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of an electric junction box according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 to 3, a box-shaped case body 12, a plate-shaped mounting portion 13, and a suction cup-shaped backlash prevention plate 14 are integrally formed in a synthetic resin electric connection box 11. Have been. The attachment unit 13 is provided with fixing means. An electric device (not shown) is accommodated in the case main body 12, and a mounting portion 13 protrudes laterally from a lower end surface of a side surface of the case main body 12. As shown in FIG. 2, a circular insertion hole 15 is formed through the center of the mounting portion 13. On the lower surface of the mounting portion 13, a rattling prevention plate 14 formed in a conical shape so as to have elasticity by reducing the plate thickness.
Project downward from the opening of the insertion hole 15.

On the upper surface of the mounting portion 13, a rotatable lock knob 16 constituting the fixing means is arranged separately from the mounting portion 13. A rotation shaft 17 protrudes from a central portion on the lower surface of the lock knob 16, and the rotation shaft 17 is inserted through the insertion hole 15. Locking pieces 19 project obliquely upward from both sides at the lower end of the rotating shaft 17. That is, the locking piece 19 having a clamp structure is formed at the lower end of the rotating shaft 17. Each top surface 19
A lock portion 20 for engaging the electric connection box 11 with the vehicle body is provided at step a to protrude with a step. In this embodiment, the first lock 18 is constituted by the locking piece 19 and the lock portion 20. Since the lock knob 16 and the first lock 18 are integrally formed via the rotation shaft 17, when the lock knob 16 is rotated, the first lock 18 also moves.

The first lock 18 is provided on the panel 21 on the vehicle body side.
The first body hole 22 is opened so as to correspond to.
The first body hole 22 is formed in a shape combining a rectangle and a circle. The length A between both ends 22 a in the longitudinal direction of the first body hole 22 is equal to the width B between the front ends of the locking pieces 19. The circular portions 22b are formed to have the same length, and the diameter of the circular portion 22b is equal to the distance C between the step surfaces 20a of the respective lock portions 20. The backlash prevention plate 14
Is formed smaller than the thickness of the panel 21.

Next, a method for attaching and detaching the electric junction box 11 to and from the panel 21 will be described. In a state in which the mounting structure on the side of the electric connection box 11 is configured to have the relationship shown in FIG. 2, the first lock 18 is opened in the panel 21 while pressing the lock knob 16 from above. One body hole 22 is inserted. At that time, the backlash prevention plate 1
The lower end surface of the panel 4 comes into contact with the surface of the panel 21 and is slid in a direction in which the entire lower end surface of the backlash prevention plate 14 is opened by the reaction force from the panel 21. Next, the upper end of the first lock 18 is guided to the back surface of the panel 21 by holding and rotating the lock knob 16 with a finger. Then, by releasing the pressing force of the lock knob 16, the panel 21 is sandwiched between the backlash prevention plate 14 and the first lock 18 as shown in FIG. 3. At this time, the upper surface 19a of the lock portion 20
The gap between the panel and the panel 21 is always closely contacted without play. In addition, by attaching the electric connection box 11 to the panel 21 with two or more mounting structures, the electric connection box 11 is more accurately fixed to the panel 21 and is protected from vibrations and shocks caused by running of the vehicle. Can withstand without coming off.

When the electric connection box 11 is to be removed from the panel 21 at the time of repair or dismantling of a scrapped vehicle body, the lock knob 16 is rotated so that the length of the first lock 18 in the longitudinal direction is equal to the length of the first lock 18. 1 body hole 2
2 is guided to a position where the length A between both end portions 22a in the longitudinal direction matches. In this state, the entire electric connection box 11 is pulled out in a direction away from the panel 21.
Therefore, the first lock 18 passes through the first body hole 22 and
The electric connection box 11 is separated from the panel 21 of the vehicle body.

According to the electric junction box of the above embodiment, the following effects can be obtained. (1) In the present embodiment, the rotating shaft 17 is inserted through the insertion hole 15 provided in the mounting portion 13 of the electric connection box 11,
The electric connection box 11 is fixed to the panel 21 by rotating the first lock 18 formed at the lower end of the panel. Further, the electric connection box 11 is moved to a position before the electric connection box 11 is fixed to the panel 21 by rotating the lock knob 16 and the electric connection box 11 is separated from the vehicle body only by pulling the electric connection box 11. Therefore, the electric connection box 11 can be easily attached and detached from the vehicle body without using a tool, and the efficiency of the disassembly operation can be improved.

(2) In the present embodiment, the play prevention plate 14 is formed to be thin so as to have an urging force. Therefore, when the electric connection box 11 is mounted on the vehicle body, the panel 21 is sandwiched between the first lock 18 and the backlash prevention plate 14. Therefore, the play preventing plate 14 can prevent play between the electric connection box 11 and the panel 21 by the urging force.

(3) In this embodiment, the first lock 18 is formed in a flexible clamp structure.
8, since the step surface 20a of the lock portion 20 is in contact with both ends of the circular portion 22b of the first body hole 22, both ends of the first lock 18 are in a state where the electric connection box 11 is attached to the vehicle body. It is urged in the direction opposite to the rotation shaft 17 to prevent the occurrence of play.

(4) In the present embodiment, the first lock 18 is formed in a flexible clamp structure. Therefore, when the electric connection box 11 is attached to the vehicle body, the first pressing of the lock knob 16 only requires the first operation.
The width of the lock 18 is reduced. Then, in a state where the upper surface 19a of the lock portion 20 is guided to the back surface of the panel 21, the width of the first lock 18 is returned to the original size. Therefore, the electric connection box 11 can be easily fixed to the panel 21.

(Second Embodiment) A second embodiment in which the present invention is embodied in an electric junction box will be described below with reference to FIGS. Since the electric connection box of the second embodiment has a configuration in which only the mounting structure of the electric connection box of the first embodiment is changed, the same portions are denoted by the same reference numerals and detailed description thereof will be made. Is omitted.

As shown in FIG. 5, a circular insertion hole 15 is formed through the center of the mounting portion 13. A coil spring 31 constituting the fixing means is provided on the upper surface of the mounting portion 13.
Is disposed at the upper end of the coil spring 31, and a rotatable lock knob 16 is disposed separately from the mounting portion 13. A rotation shaft 17 protrudes from a central portion of the lower surface of the lock knob 16, and the rotation shaft 17
Has been inserted. A second lock 32 formed in a rectangular parallelepiped shape is attached to a lower end of the rotating shaft 17. Therefore,
The lock knob 16 and the second lock 32 are connected to the rotation shaft 17.
, And the second lock 32 is also interlocked when the lock knob 16 is rotated.

A second lock 32 is provided on the panel 21 on the vehicle body side.
The second body hole 33 having a rectangular shape is formed so as to correspond to. On the inner side surface of the second body hole 33, two rotation restricting pieces 34 are formed to be bent point-symmetrically from the center of the second body hole 33.

Next, a method for attaching and detaching the electric junction box 11 to and from the panel 21 will be described. First, the mounting members on the electrical connection side are arranged so as to have a relationship as shown in FIG. Next, after the second lock 32 is inserted into the insertion hole 15 of the mounting portion 13 and the second body hole 33 provided in the panel 21 of the vehicle body, the lock knob 16 is rotated counterclockwise by 90 ° while pressing it. Thus, as shown in FIG.
The electric connection box 11 is fixed to the panel 21. In this state, the coil spring 31 is provided on the expansion and contraction portion E, and the second
The gap between the upper surface F of the lock 32 and the lower surface of the panel 21 is always zero, so that play can be prevented. By providing the mounting portion 13 at two or more places, the electric connection box 11 is accurately fixed to the panel 21 and can withstand vibrations and impacts caused by running of the vehicle without coming off.

At the time of repair or dismantling of a scrapped vehicle body, the lock knob 16 is pressed and rotated clockwise by about 90 ° to pull the entire electric connection box 11 in a direction away from the panel 21. At that time, as shown in FIG.
The electric connection box 11 extends in the direction away from the panel 21 by the elastic force of the coil spring 31 as an elastic member,
The engagement between the lock 32 and the panel 21 is released, and the electric connection box 11 can be separated from the panel 21 of the vehicle body.

Therefore, according to the present embodiment, the following features can be obtained in addition to the features described in the first embodiment. (1) In the present embodiment, the rotation shaft 17 is inserted and locked in the insertion hole 15 provided in the attachment portion 13 of the electric connection box 11, and the second lock 32 formed at the lower end of the rotation shaft 17 is rotated. The electric connection box 11 is fixed to the panel 21.
Further, the electric connection box 11 is moved to a position before the electric connection box 11 is fixed to the panel 21 by rotating the lock knob 16 and the electric connection box 11 is separated from the vehicle body only by pulling the electric connection box 11. Therefore, the electric connection box 11 can be attached to and detached from the vehicle body without using a tool, and the efficiency of dismantling work can be improved.

(2) In the present embodiment, a coil spring 31 as an elastic member is provided at the position shown in FIGS. Therefore, when the electric connection box 11 is mounted on the vehicle body, the panel 21 is sandwiched between the second lock 32 and the mounting portion 13. Therefore, the coil spring 31 can prevent backlash between the electric connection box 11 and the panel 21 by the urging force.

(3) In the present embodiment, the second body hole 33
The two rotation restricting pieces 34 are provided on the inner surface of the second body hole 33.
, It is possible to restrict the second lock 32 from rotating beyond the amount of rotation required to attach the electric connection box 11 to the panel 21.

The above embodiments may be modified as follows. In the first embodiment, the first lock 18 is formed in a clamp structure. However, the first lock 18 may be formed in a rectangular parallelepiped similar to the second embodiment. Even with such a configuration, the same effects as in the first embodiment can be obtained.

In the first embodiment, the backlash prevention plate 14 is used.
Are projected from the lower surface of the mounting portion 13, but a coil spring 31 may be provided between the lock knob 16 and the mounting portion 13 instead of the backlash prevention plate 14. With this configuration, the first lock 18 is rotated while being pressed during rotation, and has the same effect as the first embodiment.

In the second embodiment, the second body hole 3
3, the rotation restricting pieces 34 for stopping the rotation of the second lock 32 are provided at two places. However, when the elastic coefficient of the coil spring 31 is increased, the rotation restricting pieces are not provided. You may. With this configuration, since only the second body hole 33 needs to be formed in the vehicle body, the vehicle body can be manufactured more easily.

In the second embodiment, the coil spring 31
Although the play is prevented through the use of the coil spring 31, the play prevention plate 14 may be provided instead of the coil spring 31. With this configuration, since the backlash prevention plate 14 is integrally formed, the number of parts can be reduced, and the manufacturing cost can be reduced.

Next, technical ideas other than the invention described in the claims that can be grasped from the above embodiment and other examples will be described below together with their effects. (1) In the mounting structure for an electric connection box according to the first aspect, the electric connection box is fixed at a predetermined position through an engagement hole formed in the mounted portion by rotating the lock portion. The mounting structure of the electrical junction box. Therefore, according to the technical idea (1), the mounted portion is sandwiched between the backlash preventing means and the lock portion, so that the electric connection box can be securely fixed to the mounted portion.

[0042]

As described in detail above, according to the first aspect of the present invention, since the electric connection box is fixed by the rotatable fixing means, the electric connection box can be attached to the mounting portion without using a tool. Can be attached and detached. Further, in a state where the electric connection box is attached to the attached portion by the fixing means, the backlash preventing means is provided between the knob portion and the lock portion to prevent backlash between the attached portion and the attached portion. Can be.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in the above, since the backlash prevention means is formed as an elastically deformable backlash prevention plate, the backlash between the mounting portion and the mounted portion can be reliably ensured by the urging force of the backlash prevention plate. Can be prevented.

According to the invention described in claim 3, according to claim 1
In addition to the effects of the invention described in (1), since the backlash preventing means is formed as a spring, the mounting portion and the mounted portion are brought into close contact with each other by the biasing force of the spring, thereby preventing backlash.

According to the fourth aspect of the present invention, the first aspect is provided.
In addition to the effects of the third aspect of the invention, since the side surface of the lock portion is in contact with both ends of the engagement hole, the effect of preventing backlash can be enhanced.

According to the invention set forth in claim 5, according to claim 1,
In addition to the effect of the invention according to claim 4, since the rotation restricting portion is bent in the engagement hole, the rotation amount exceeds the amount of rotation necessary to attach the electric connection box to the attached portion. The rotation of the fixing means can be restricted.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view showing a state in which an electric connection box according to a first embodiment is mounted;

FIG. 2 is a cross-sectional view of a main part showing a state in which the electric connection box is attached.

FIG. 3 is a cross-sectional view of a main part showing a state where the electric connection box is attached.

FIG. 4 is an exemplary perspective view showing a state in which an electric junction box according to a second embodiment is mounted;

FIG. 5 is a sectional view of a main part showing a state in which the electric junction box is attached.

FIG. 6 is a sectional view of a main part showing a state where the electric junction box is attached.

FIG. 7 is a perspective view showing a state in which an electric junction box according to the related art is attached.

FIG. 8 is a perspective view showing a state in which the electric junction box is attached.

[Explanation of symbols]

11 ... electrical connection box, 12 ... case body, 13 ... mounting part,
15: backlash prevention plate, 16: lock knob, 17: rotating shaft, 18: first lock, 22: first body hole, 31: coil spring, 32: second lock, 33: second body hole, 3
4 ... Rotation restricting piece.

Claims (5)

[Claims] 1. An electric connection box comprising: a case main body in which an electric device is accommodated; a mounting portion protruding outside the case main body; and fixing means capable of fixing the mounting portion to a mounted portion. Wherein the fixing means comprises a rotatable knob disposed above the mounting portion, and a lower portion disposed below the mounting portion for interlocking with the knob portion. A lock portion which can be engaged with the object to be mounted by being rotated while being inserted into an engagement hole provided in the object, and wherein the mounting portion is provided between the knob portion and the lock portion. A mounting structure for an electrical junction box, comprising: a rattling preventing means for preventing rattling between a portion and the mounted portion. 2. The electric junction box mounting structure according to claim 1, wherein said rattling preventing means is an elastically deformable rattling preventing plate formed below said mounting portion. Mounting structure. 3. The electric junction box mounting structure according to claim 1, wherein said play preventing means is a spring provided between said knob and said mounting part. Mounting structure. 4. The electric junction box mounting structure according to claim 1, wherein the lock portion is formed in a flexible clamp structure. Connection box mounting structure. 5. The electric junction box mounting structure according to claim 1, wherein the engagement hole has a rotation restricting portion for preventing the lock portion from rotating. A mounting structure for an electric junction box, comprising: