JPH0710992U - Unit case mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Improves the holding force when attaching the bracket to the unit case, prevents rattling due to the tightening torque of the screw tightening that occurs when attaching the electric wire to the unit case, and damages it. To provide a unit case attachment structure that does not require [Structure] At least one of the insertion parts 3 for mounting the unit case 8 of the bracket 1 is provided with a flange part 2 standing upright along the insertion direction of the insertion part 3,
A housing portion 23 having a guide groove portion 28 for guiding the flange portion 2 is provided in the bracket insertion portion of the housing portion 23, and the housing portion 23 is connected to a lower portion of an insertion opening 29 for inserting the bracket 1 outside the housing portion 23. The unit case mounting structure is characterized in that movable reinforcing ribs 26 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a unit case mounting structure for mounting a bracket to a unit case.

[0002]

[Prior art]

 As a conventional mounting structure of a unit case to a bracket, as shown in FIG. 10, a parallel guide rail 51 is provided on one surface of the unit case 50, and an engaging projection 52 is provided between the guide rails 51. There is. The bracket 53 to which the unit case is attached has an L-shaped insertion portion 54 to be inserted into the guide rail 51 and an attachment portion 55 for attaching the bracket 53 to an external frame (not shown). A notch 56 is provided in a portion to be inserted into the guide rail 51, and an engaging hole 57 that engages with the engaging protrusion 52 is provided.

In the conventional unit case mounting structure as described above, there is a problem that the engaging projection 52 is damaged during mounting and dismounting. As a unit case that can be easily mounted and disassembled, a practically open 63 An improved unit case mounting structure is proposed in Japanese Patent Publication No. 34650. As shown in FIG. 11, a step portion 58 is provided at a position where the engaging projection 52 is attached, and one end is a free end and the other end is fixed to the unit case 50 in the step portion 58, and a movable member 59 having elasticity. Is provided so that its upper surface is flush with the unit case 50, and the engaging projection 52 is provided on the upper surface of the movable member 59.

[0004]

[Problems to be solved by the device]

 However, in general, the unit case is a case that is installed for the purpose of connecting electric wires, and there is a screw part inside the unit case.A terminal with an end of the electric wire is attached to this screw part and It is fastened and connected. Therefore, there are problems that the bracket is loosened by the tightening torque due to the screw tightening and the guide rail that holds the bracket and the unit case is damaged. The present invention has been made in view of the above circumstances, and its purpose is to increase the holding force between the bracket and the unit case, improve the fitting feeling, and tighten the torque of the terminal screw. It is intended to provide a unit case mounting structure that is not damaged even with respect to.

[0005]

[Means for Solving the Problems]

 The above object of the present invention is to provide a unit case mounting structure in which an electric wire is electrically connected on the one hand, a bracket is inserted and fixed on the other side, and the bracket is fixed to an external frame via the bracket. A housing portion provided with a flange portion standing upright along the insertion portion on at least one side of the side end, and guide groove portions for inserting the flange portion at both ends of the bracket insertion opening of the unit case. Further, it can be achieved by a mounting structure of a unit case, characterized in that a flexible arm-shaped reinforcing rib is integrally connected to the housing portion. Further, the above object can be achieved by providing tapered projections for fitting the bracket with a low insertion force on the lower surface portions of both ends of the reinforcing rib. Further, the above object is achieved by providing a bead portion which pushes up the reinforcing rib and is fitted and locked to the reinforcing rib at a position where the bracket is completely inserted, on the upper surface portion of the bracket provided with the flange portion. can do. Further, the above object can be achieved by arranging a plurality of ribs on the outside of the housing portion for reinforcing the housing portion.

[0006]

[Action]

 In the mounting structure of the unit case according to the above configuration of the present invention, when the bracket is previously mounted at a predetermined position of the external frame and the bracket insertion opening of the unit case is inserted into the flange portion of the bracket, the unit case is tapered. Guided by the protrusion, it is inserted into the bracket with low insertion force. Then, by pushing in the unit case, the reinforcing ribs pass over the bead portion of the bracket, and are fixed at the position where the end face of the bead portion is fitted to the reinforcing rib. Next, attach the wire with the terminal to the unit case and tighten it with screws. Since the tightening torque by this screw is received by the flange part of the bracket and the housing part surrounding the guide groove part of the unit case, the torque is divided into a predetermined width and the housing is formed by a plurality of ribs provided outside the housing part. It can be tightened without damaging the parts. Finally, the electric connection of the electric wires is completed by closing the lid of the unit case.

[0007]

【Example】

 Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. As shown in FIG. 2, the bracket 1 is an L-shaped metal fitting, and a flange portion 2 bent at a right angle is provided on one side surface on one side. The surface side provided with the flange portion 2 constitutes an insertion portion 3 for mounting a unit case 8 described later. When the unit case 8 is attached, the insertion portion 3 is provided with a locking hole 4 that fits into an engaging projection 22 provided on the unit case 8. The locking hole 4 is located in front of the locking hole 4. A locking projection 5 that is locked to a reinforcing rib 26 provided on the unit case 8 is provided on the. The flat plate portion bent from one end surface of the insertion portion 3 has a mounting portion 6 that is screwed to an external frame (not shown), and the mounting portion 6 has at least two or more stopper portions. Screw holes 7, 7 are provided. Although the mounting portion 6 is shown bent downward with respect to the insertion portion 3, the mounting portion 6 is not particularly limited to this shape, and may be a bracket in which the mounting portion 6 is bent downward, It suffices to keep the insertion portion 3 protruding from the frame surface by attaching the attachment portion 6 to an external frame.

As shown in FIGS. 3 to 5, the unit case 8 is composed of a main body portion 9 and a lid portion 10 attached to the main body portion 9. The main body portion 9 and the lid portion 10 are composed of the main body portion 9 and the lid portion 10. The hinge 11 is formed so as to be openable and closable, and both are integrally formed by an insulating member. An insert bolt 12 for mounting a terminal, which will be described later, is molded in the center of the upper surface side of the main body portion 9 at the time of integral molding. An outer peripheral portion 14 rises above and below the insert bolt 12 via recesses 13, and guide portions 16 for guiding an inner peripheral surface 15 of the lid portion 10 to be described later are provided upright at four corners of the outer peripheral portion 14. There is. The upper and lower sides of FIG. 3 are notched portions between the guide portions 16, and the electric wire 31 (see FIG. 6) to which the terminal 30 is attached is inserted from the notched portion side. Further, on the opposite side of the main body portion 9 provided with the hinge 11, a lock portion 18 is integrally formed which is extended from the outer peripheral portion 14 and protrudes to the outside of the main body portion 9, and the inside has a square hole 17. ing. The lock portion 18 is formed by a side wall whose both sides are equal to each other in the thickness direction of the main body portion 9, and a claw member 19 provided on an upper end portion of the side wall.

The lid portion 10 is a lid body having a depth for accommodating the insert bolt 12, and includes a side surface opening portion 20 sufficient for inserting the electric wire 31, and corresponds to the lock portion 18 of the main body portion 9. A wedge-shaped lock claw 21 is provided at the position to be set. Then, by attaching the lid portion 10 to the main body portion 9, the lock pawl 21 is fitted into the lock portion 18 of the main body portion 9, and the lock pawl 21 is locked to the pawl member 19 of the lock portion 18. Is made. Due to the locking of the lid body 10, the side surface opening 20 is formed so as to coincide with the cutout portion between the guide portions 16 of the main body portion 9 so that only the electric wire 31 is inserted to the outside.

An engaging protrusion 22 as shown in FIG. 5 is provided at the center of the back side surface of the main body 9. The engaging projection 22 is a cylindrical projection that fits in the locking hole 4 of the bracket 1 and has a central portion protruding from the peripheral portion to facilitate insertion and withdrawal of the bracket 1. It is supposed to do. A housing portion 23 for accommodating the flange portion 2 of the bracket 1 is formed integrally with the main body portion 9 on both sides of the engagement protrusion 22. The housing portion 23 is a member erected on the back surface side of the main body portion 9, and a plurality of ribs 24 for reinforcing the housing portion 23 are arranged side by side on the outside. A groove 25 into which the insertion portion 3 of the bracket 1 is inserted is provided in a portion of the housing portion 23 on the side where the ribs 24 are not provided, which is in contact with the main body portion 9. From this meaning, the housing portion 23 has the rib 24. It is formed by a cantilever structure on the side provided with.

Reinforcing ribs 26 that connect the housing portion 23 along the height of the groove 25 are provided on the side of the housing portion 23 where the lock portion 18 of the main body portion 9 is attached. As shown in FIG. 1, the reinforcing rib 26 is provided with a tapered protrusion 27 protruding toward the main body 9 side at a position where the reinforcing rib 26 is connected to the housing portion 23. With this, the insertion portion 3 of the bracket 1 is pressed, and the projecting portion 27 allows the reinforcing rib 26 to be slightly movable in the vertical direction. Inside the housing portion 23 provided with the reinforcing rib 26, a guide groove portion 28 is formed which is inserted in the groove 25 and is formed in the height direction of the housing portion 23. The guide groove portion 28 is a groove through which the flange portion 2 of the bracket 1 is inserted. The guide groove portion 28 is slightly wider on the insertion port 28 side for facilitating the insertion of the flange portion 2, and is located between the flange portion 2 and the rear portion from the center. It is formed so that there is no backlash.

With the bracket 1 and the unit case 8 configured as described above, as shown in FIG. 1, the bracket 1 is previously fixed at a predetermined position through the set screw hole of the mounting portion 6, and the bracket 1 of the bracket 1 is fixed. The guide groove portion 28 and the groove 25 of the housing portion 23 of the unit case 8 are inserted into the insertion portion 3 in alignment with each other. Therefore, the front end surface of the insertion portion 3 of the bracket 1 contacts the engaging projection 22 of the unit case 8 and the locking projection 5 provided on the bracket 1 contacts the reinforcing rib of the unit case 8. By slightly strengthening, the front end surface of the insertion portion 3 rides over the engagement projection 22, and the engagement projection 5 is inserted by pushing up the reinforcing rib 26. Then, the engaging projection 22 of the unit case 8 is fitted into the locking hole 4 of the bracket 1 at a position where the front end face of the insertion portion 3 abuts on the innermost rib 24 provided in parallel. The locking projection 5 of the bracket 1 is engaged with and fixed to the end surface of the reinforcing rib 26 on the rear side.

On the upper surface of the unit case 8 fixed in this way, the terminal 30 crimped to the end of the electric wire 31 is inserted into the insert bolt 12 as shown in FIG. 6, and the nut 32 shown in FIG. 7 is attached. Even if they are fastened together, the flange portion 2 of the bracket 1 is clamped by both side walls of the guide groove portion 28, and the insertion portion 6 is supported by the groove 25 and the bottom surface portion of the main body portion 9, so that it is completely tightened. Rattling between the bracket 1 and the unit case 8 does not occur. Further, since the housing portion 23 is reinforced by the plurality of ribs 24 from the outside, the bracket 1 can be firmly fixed without being damaged by the tightening torque of the nut 32.

8 and 9 show a second embodiment of the present invention. In the second embodiment, the bead portion 33 is provided on the insertion portion 3 of the bracket 1A. The bead portion 33 is formed in a shape that forms a part of a conical body, the tip of which is directed in the insertion direction of the unit case 8, and the end surface of the bead portion 33 is reinforced when the unit case 8 is fixed to the bracket 1A. It is formed so as to match the inner end surface position of the rib 26. Further, the projecting height of the bead portion 33 is formed so as to match the upper surface position of the reinforcing rib 26. The bead portion 33 formed as described above pushes up the reinforcing rib 26 when the unit case 8 is inserted into the bracket 1A, and the bead portion 33 is locked to the reinforcing rib 26 after the insertion. The deviation of the unit case 8 from the bracket 1A is prevented. The tightening torque generated when the terminal 30 is attached is protected as in the first embodiment.

[0015]

[Effect of device]

 As described above, in the unit case mounting structure of the present invention, the flange portion is provided at the insertion portion of the bracket, and the guide groove portion for guiding the flange portion is provided at the unit case side engaged with the insertion portion. The housing part is formed, and the reinforcing ribs that connect the housing part and the multiple ribs that support the outside of the housing prevent rattling between the bracket and the unit case and prevent damage caused by screw tightening torque. can do. Also, the workability of inserting the bracket into the bracket can be performed with a low insertion force due to the shape of the reinforcing ribs, and the holding force thereof against the rotational force can be increased.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a unit case mounting structure showing a first embodiment of the present invention.

FIG. 2 is an overall perspective view of a bracket.

FIG. 3 is a top view of a unit case.

FIG. 4 is a partial cross-sectional view of a unit case.

FIG. 5 is a rear view of the unit case.

FIG. 6 is a perspective view showing how electric wires are attached to a unit case.

FIG. 7 is a partial cross-sectional view of FIG.

FIG. 8 is a partial perspective view of a unit case mounting structure showing a second embodiment of the present invention.

9 is a sectional view of FIG.

FIG. 10 is a perspective view showing a first conventional example.

FIG. 11 is a perspective view showing a second conventional example.

[Explanation of symbols]

 1 bracket 2 flange part 3 insertion part 8 unit case 23 housing part 24 rib 26 reinforcing rib 27 protrusion part 28 guide groove part 29 bracket insertion port 31 electric wire 33 bead part

Claims (4)

[Scope of utility model registration request] 1. A mounting structure for a unit case in which an electric wire is electrically connected on the one hand and a bracket is inserted and fixed on the other hand, and the bracket is fixed to an external frame through the bracket. A housing portion provided with a flange portion standing upright along the insertion portion on at least one side, and a guide groove portion for inserting the flange portion at both ends of the bracket insertion opening of the unit case; A unit case mounting structure, characterized in that flexible arm-shaped reinforcing ribs are integrally connected to the housing portion. 2. The mounting structure for a unit case according to claim 1, wherein tapered projections for fitting the bracket with a low insertion force are provided on lower surface portions of both ends of the reinforcing rib. 3. A bead portion, which pushes up the reinforcing rib and is fitted and locked to the reinforcing rib at a position where the bracket is completely inserted, is provided on an upper surface portion of the bracket having the flange portion. The unit case mounting structure according to claim 1. 4. The mounting structure for a unit case according to claim 1, wherein a plurality of ribs for reinforcing the housing portion are arranged side by side on the outside of the housing portion.