JP6575595B2 - Connection part protection member and wire harness - Google Patents

Description

  The present invention relates to a connection portion protection member and a wire harness.

  Conventionally, when connecting a cable such as a battery or an inverter in an electric vehicle or a hybrid vehicle, for example, a plate-shaped first electrode (bus bar terminal) provided on a terminal block of the device and an end of the cable The plate-like 2nd electrode (bus bar terminal) provided in is electrically connected by screwing fixation (for example, refer to patent documents 1).

JP 2014-969310 A

  By the way, there is a possibility that a large current flows in the connection portion between the battery or the inverter and the cable as described above, and there is a possibility that an electric shock may occur if the worker directly touches the terminal or the like. Depending on the system configuration of the vehicle, the terminal block of the battery or the inverter may be exposed, and in order to ensure the safety of the worker, the structure in which the worker cannot directly touch the connection part, that is, It is desired that the connection portion has a touch protection structure.

  Then, an object of this invention is to provide the connection part protection member and wire harness which can make a connection part a touch protection structure.

  In order to solve the above-described problems, the present invention provides a connection portion for fixing a plate-like first electrode provided on a terminal block and a plate-like second electrode provided on an end portion of a cable by screwing. A connecting portion protecting member provided on the housing, comprising a housing fixed to the second electrode or the terminal block and covering the connecting portion, and a screw for screwing formed on the housing There is provided a connection portion protection member comprising a screw hole for passing the screw through and a closing member for closing the screw hole.

  Moreover, this invention is equipped with the cable, the 2nd electrode provided in the edge part of the cable, and the said connection part protection member for the purpose of solving the said subject, The said connection part is provided in the said 2nd electrode. Provided is a wire harness configured by fixing a protective member.

  ADVANTAGE OF THE INVENTION According to this invention, the connection part protection member and wire harness which can make a connection part into a touch protection structure can be provided.

It is a figure which shows the wire harness provided with the connection part protection member which concerns on the position embodiment of this invention, (a) is a perspective view, (b) is sectional drawing at the time of connecting a wire harness to a terminal block. It is a disassembled perspective view of the wire harness of FIG. It is a top view of the wire harness of FIG. (A) is the perspective view of the wire harness of FIG. 1, (b) is the 4B-4B sectional view taken on the line, and the principal part enlarged view. (A)-(c) is a figure explaining the connection procedure of the wire harness of FIG.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1A and 1B are diagrams showing a wire harness provided with a connection portion protection member according to the present embodiment, wherein FIG. 1A is a perspective view, and FIG. 1B is a cross-sectional view when the wire harness is connected to a terminal block. . 2 is an exploded perspective view of the wire harness, and FIG. 3 is a plan view of the wire harness.

  As shown in FIGS. 1 to 3, the connection protection member 1 includes a plate-like first electrode (bus bar terminal) 3 provided on the terminal block 2 and a plate-like second provided on the end of the cable 4. It is provided in the connection part 6 which fixes the electrode 5 (bus bar terminal) with screws, and protects the connection part 6 and suppresses the operator from touching the connection part 6.

  The terminal block 2 is provided, for example, in a device such as a battery or an inverter in an electric vehicle or a hybrid vehicle. In the terminal block 2, a plate-like first electrode 3 is extended from a housing portion 2a made of an insulator. The first electrode 3 is formed with a through hole 3a through which a screw 7 for screwing is passed.

  The cable 4 is configured by covering the outer periphery of a central conductor 4a made of a single wire or a stranded wire conductor with a sheath 4b made of an insulator. At the distal end portion of the cable 4, the central conductor 4a extends from the sheath 4b, and the second electrode 5 is electrically connected to the extended central conductor 4a.

  The second electrode 5 includes a caulking portion 5a that is caulked and fixed to a central conductor 4a that extends from the sheath 4b at the distal end portion of the cable 4, and is formed integrally with the caulking portion 5a and forward (from the cable 4). And a plate-like terminal portion 5b extending in the direction opposite to the extending side. The terminal portion 5b is formed with a through hole 5c through which a screw 7 for screwing is passed.

  The connecting portion 6 is formed by superimposing both electrodes 3 and 5, passing a screw 7 through the through holes 3 a and 5 c formed in the both electrodes 3 and 5, and fastening and fixing the screw 7 to the terminal block 2. , 5 are electrically connected.

  Now, the connection portion protection member 1 according to the present embodiment includes a housing 8 and a closing member 9.

  The housing 8 is made of an insulator and is provided so as to cover the connection portion 6. The housing 8 is formed in a substantially rectangular parallelepiped shape, and is a front wall that connects the side walls 8a and 8b arranged opposite to each other and the end portions of the side walls 8a and 8b (ends opposite to the extension side of the cable 4). 8c and the upper wall 8d which connects the upper end parts of the side walls 8a and 8b and the front wall 8c are integrally provided. The housing 8 is configured to extend the cable 4 from the base end side (the right side in FIG. 1B), and the base end side and the lower side are open.

  The upper wall 8d of the housing 8 is formed with a screw hole 10 through which the screw 7 for screwing is passed. In the present embodiment, the rectangular screw hole 10 is formed in plan view, but the shape of the screw hole 10 is not limited to this. Further, a notch 11 that opens to the base end side is formed on the upper wall 8 d on the base end side of the screw hole 10, and a rib 12 is formed between the screw hole 10 and the notch 11. .

  A locking hole 13 for locking a claw portion 9d of a closing member 9 to be described later is formed in the upper wall 8d on the tip side of the screw hole 10. Further, on both side walls 8a and 8b of the housing 8, there are formed slide grooves 14 for slidably receiving guide projections 9e of a closing member 9 described later. The slide groove 14 is provided along the extending direction of the cable 4 (longitudinal direction of the second electrode 5).

  In the present embodiment, the housing 8 is fixed to the second electrode 5. The wire harness 100 according to the present embodiment is a configuration in which the cable 4, the second electrode 5, and the connection portion protection member 1 are integrally formed by fixing the housing 8 to the second electrode 5.

  The housing 8 is fixed to the second electrode 5 so as to cover the entire second electrode 5 except for the surface (the lower surface in FIG. 1A) that is in contact with the first electrode 3. The housing 8 is formed so as to cover the entire second electrode 5 from the distal end portion of the terminal portion 5b to the proximal end portion of the caulking portion 5a and also to the distal end portion of the sheath 4b. Since the lower surface of the second electrode 5 is a surface connected to the first electrode 3, the second electrode 5 is configured to be exposed from below the housing 8.

  The housing 8 is preferably configured to cover the first electrode 3 exposed from the housing portion 2a of the terminal block 2. More specifically, the gap between the housing part 2a of the terminal block 2 and the housing 8 (the gap between the housing part 2a in front of the housing 8 and the front wall 8c, and the housing part 2a below the housing 8). The gap between the housing 8 and the housing 8 is preferably set to a width that does not allow the operator's fingers to enter. In the present embodiment, the housing 8 has a substantially rectangular parallelepiped shape, but the shape of the housing 8 is not limited to this, and can be appropriately changed according to the shape of the terminal block 2.

  As shown in FIGS. 4A and 4B, in the present embodiment, protrusions 17 projecting sideways are provided on both sides of the terminal portion 5b of the second electrode 5, and both side walls 8a, A groove 18 for accommodating the protrusion 17 is formed in the lower end portion of the inner wall in 8b, the protrusion 17 is accommodated in the groove 18, and the second electrode 5 is slid from the proximal end side to the distal end side, whereby the housing 8 is moved to the second electrode. 5 to be fixed. A press-fit portion 18a whose width (width in the vertical direction in the figure) is smaller than the thickness of the protrusion 17 of the second electrode 5 is formed at the tip portion of the groove 18, and the protrusion 17 is press-fitted into the press-fit portion 18a. The second electrode 5 and the housing 8 are configured to be firmly fixed.

  In the present embodiment, the housing 8 is fixed to the second electrode 5. However, the present invention is not limited to this, and the housing 8 may be directly fixed to the terminal block 2. However, in this case, if the housing 8 is provided after the first electrode 3 and the second electrode 5 are fixed by screwing, there is a possibility that an operator may receive an electric shock during the screwing and fixing work. Further, when the first electrode 3 and the second electrode 5 are screwed and fixed after the housing 8 is provided, the relative position between the second electrode 5 and the housing 8 is shifted, which takes time. Is also possible. That is, by configuring the housing 8 so as to be fixed to the second electrode 5 as in the present embodiment, it is possible to increase the safety during the connection work and to easily perform the connection work.

  1-3, the closing member 9 is for closing the screw hole 10 formed in the upper wall 8d of the housing 8 after screwing, and is made of an insulator. In the present embodiment, the closing member 9 is formed in a plate shape and is slidably provided on the housing 8.

  The closing member 9 includes a connecting portion 9a serving as a base end portion, a lance 9b extending from the central portion in the width direction (vertical direction in FIG. 3) of the connecting portion 9a to the distal end side, and both sides in the width direction of the connecting portion 9a. And a guide portion 9c extending to the distal end side.

  The guide portion 9 c has a guide projection 9 e that protrudes laterally from the distal end portion thereof, and the closing member 9 is slidably provided in the housing 8 by accommodating the guide projection 9 e in the slide groove 14. A gap is provided between the lance 9b and the guide portions 9c. The guide protrusion 9e is inserted into the slide groove 14 by inserting the closing member 9 into the housing 8 while deforming the guide portion 9c on the gap side. Can be accommodated. The guide protrusion 9e also serves to lock the closing member 9 to the housing 8, that is, to prevent the closing member 9 from coming off.

  In this embodiment, the closing member 9 is provided in the housing 8 so as to be slidable in the extending direction of the cable 4, and protrudes from the housing 8 toward the cable 2 when the screw hole 10 is not closed. Is configured to do. This makes it possible to effectively use the space above the cable 4 and to provide the connecting portion protection member 1 in a narrow space as compared with the case where the closing member 9 is slidable to the side or the front. Become.

  A claw portion 9d that protrudes upward is formed at the tip of the lance 9b. When the closing member 9 is slid to the distal end side, the claw portion 9d is locked in the locking hole 13 formed in the upper wall 8d of the housing 8, whereby the closing member 9 closes the screw hole 10. It is comprised so that it may be latched by the housing 8.

  In this embodiment, since a gap is provided between the lance 9b and the guide portions 9c, portions of the screw hole 10 that do not face the lance 9b (portions on both sides of the lance 9b) are not blocked. It will be. Therefore, the size of the screw hole 10 and the like may be adjusted as appropriate so that the unoccluded portion is at least so that the operator's finger cannot enter. In addition, by providing a gap between the lance 9b and the guide portions 9c, the lance 9b can be lengthened and the lance 9b can be easily bent, and the closing member 9 is slid to close the screw hole 10. In this case, there is also an advantage that the rib 12 and the upper wall 8d between the screw hole 10 and the locking hole 13 can be easily ridden (see FIG. 5B).

  Furthermore, in the connection part protection member 1 according to the present embodiment, the housing 8 is provided with a hollow cylindrical guide part 15 through which the screw 7 is passed. The guide portion 15 is provided so that the axial direction thereof coincides with the insertion direction of the screw 7 and is disposed so that the opening of the hollow portion is positioned above and below. The guide portion 15 is supported on both side walls 8a and 8b via two support walls 16. By providing the guide portion 15, problems such as the screw 7 falling down during the screwing operation are eliminated, and the connection operation is facilitated.

  Further, in the present embodiment, the closing member 9 is slidable between the guide portion 15 and the upper wall 8d of the housing 8 (the outer wall of the housing 8 facing the connection portion 6 and the guide portion 15). Is provided. A concave portion 15 a is formed at the upper end portion of the guide portion 15 to avoid interference with the lance 9 b of the closing member 9.

  In the present embodiment, the lance 9b of the closing member 9 is locked to the upper wall 8d, and the lance 9b is pushed downward. Accordingly, in order to prevent the lance 9b from being excessively deformed and broken when the lance 9b is pushed downward, a guide portion 15 is provided below the lance 9b, and the downward deformation of the lance 9b is guided by the guide portion. 15 is configured so as to be regulated by contact with 15. At this time, the distance between the guide portion 15 and the lance 9b is designed such that the lance 9b is not damaged even if the lance 9b is pushed downward (“damage” means that the lance 9b is broken, 9b does not return to its original shape). That is, the guide portion 15 serves both as a guide when the screw 7 is introduced into the connection portion 6 and as a role of suppressing breakage due to excessive deformation of the lance 9b.

  Next, a procedure for connection work will be described.

  First, the wire harness 100 is configured by fixing the connection portion protection member 1 to the second electrode 5. After that, as shown in FIG. 5 (a), the second electrode 5 is placed so as to overlap the first electrode 3 of the terminal block 2, the screw 7 is introduced from the screw hole 10, and both the electrodes 3, 5 are screwed. Stop and fix. At this time, the closing member 9 is slid to the base end side (cable 4 side) so that the claw portion 9d of the lance 9b is accommodated in the notch 11 and the screw hole 10 is not closed.

  Thereafter, as shown in FIG. 5B, the closing member 9 is slid to the tip side. At this time, the claw portion 9d of the lance 9b is pushed downward and passes over the rib 12 and the upper wall 8d between the screw hole 10 and the locking hole 13, and as shown in FIG. 13 is locked. In the present embodiment, the tip side and the upper corner of the claw portion 9d are rounded so that they can be easily slid to the tip side of the closing member 9 (that is, the rib 12 and the screw hole 10 are locked). It is configured so as to easily get over the upper wall 8d between the holes 13). As described above, the screw hole 10 is closed by the closing member 9, and the entire connection portion 6 is covered by the connection portion protection member 1.

(Operation and effect of the embodiment)
As described above, in the connection portion protection member 1 according to the present embodiment, the housing 8 made of an insulator fixed to the second electrode 5 or the terminal block 2 and provided so as to cover the connection portion 6, and the housing 8 The screw hole 10 for passing the screw 7 for screwing formed in the above and the closing member 9 for closing the screw hole 10 are provided.

  By comprising in this way, it becomes possible to cover the connection part 6 which fixed both the electrodes 3 and 5 by screwing with the connection part protection member 1, and it is set as the structure where an operator cannot touch the connection part 6 directly. In other words, the connection portion 6 can have a touch protection structure. As a result, it is possible to perform the connection work safely, and it is possible to suppress the occurrence of problems such as electric shock.

  Moreover, in this Embodiment, since the housing 8 is being fixed to the 2nd electrode, it becomes possible to ensure a worker's safety also during a connection operation.

  Although it is possible to simply provide a cover that covers the entire connection portion 6, in this case, the entire connection portion 6 including the cover is enlarged, and the work of attaching the cover also takes time. End up. By adopting a structure in which the connection portion protection member 1 is previously attached to the second electrode 5 as in the present embodiment, the connection work is facilitated, and the entire connection portion 6 including the connection portion protection member 1 is made compact. It becomes possible. According to the present embodiment, for example, even the terminal block 2 in which a large number of first electrodes 3 are arranged in a narrow space can be applied.

(Summary of embodiment)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals in the embodiment. However, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

[1] Connection for screwing and fixing the plate-like first electrode (3) provided on the terminal block (2) and the plate-like second electrode (5) provided at the end of the cable (4) It is a connection part protection member (1) provided in a part (6), Comprising: It is fixed to the said 2nd electrode (5) or the said terminal block (2), and the insulator provided so that the said connection part (6) may be covered A housing (8) comprising: a screw hole (10) for passing a screw (7) for screwing formed in the housing (8); and a closing member (9) for closing the screw hole (10) The connection part protection member (1) provided with.

[2] The closing member (9) is formed in a plate shape and is slidably provided in the housing (8), and is locked to the housing (8) in a state where the screw hole (10) is closed. The connection part protection member (1) according to [1], configured as described above.

[3] The housing (8) has a hollow cylindrical guide portion (15) through which the screw (7) passes, and the closing member (9) includes the guide portion (15) and the connection portion ( 6) and an upper wall (8d) which is an outer wall of the housing (8) facing each other with the guide portion (15) interposed therebetween, and is slidably provided and locked to the upper wall (8d) The connection part protection member according to [2], which is configured as described above.

[4] The connection member protection member according to [2] or [3], wherein the closing member (9) is provided in the housing (8) so as to be slidable in the extending direction of the cable (4). (1).

[5] The housing (8) is fixed to the second electrode (5) so as to cover the whole of the second electrode (5) excluding the surface in contact with the first electrode (3). The connection part protection member (1) according to any one of [1] to [4].

[6] The cable (4), the second electrode (5) provided at the end of the cable (4), and the connection portion protection member (1) according to any one of [1] to [5] And a wire harness (100) configured by fixing the connection portion protection member (1) to the second electrode (5).

  While the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

  The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Connection part protection member 2 ... Terminal block 3 ... 1st electrode 4 ... Cable 5 ... 2nd electrode 6 ... Connection part 8 ... Housing 9 ... Closure member 10 ... Screw hole 100 ... Wire harness

Claims (4)

A connection portion protection member provided at a connection portion for screwing and fixing a plate-like first electrode provided on a terminal block and a plate-like second electrode provided on an end portion of a cable,
A housing made of an insulator fixed to the second electrode or the terminal block and provided to cover the connecting portion;
A screw hole for passing a screw for screwing formed in the housing;
A closing member for closing the screw hole;
Bei to give a,
The housing has a hollow cylindrical guide portion through which the screw passes.
The closing member is formed in a plate shape and is slidably provided between the guide portion and the upper wall which is the outer wall of the housing facing the connection portion and the guide portion. , Configured to be locked to the upper wall with the screw hole closed.
Connection part protection member. The closing member is provided in the housing so as to be slidable in the extending direction of the cable.
The connection part protection member according to claim 1 . The housing is fixed to the second electrode so as to cover the whole of the second electrode excluding a surface in contact with the first electrode.
The connection part protection member according to claim 1 or 2 . Cable and
A second electrode provided at the end of the cable;
A connection part protection member according to any one of claims 1 to 3 ,
The connection part protection member is fixed to the second electrode.
Wire harness.

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