JP3749669B2 - Connector mounting jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connector mounting jig for assembling a plurality of connectors to an electrical device.
[0002]
[Prior art]
A large connector that handles a large current may be fixed to the receiving connector by bolting in order to increase its mounting strength. For example, the structure shown in FIG. 5 is employed to connect a power cable of an electric vehicle to a drive motor. In the figure, the terminal block 2 of the power motor is provided with three receiving side connectors 3 for three-phase alternating current, and a connector 5 attached to a shielded electric wire 4 is connected thereto. The connector 5 is formed by integrally providing a metal flange 6 on a plastic housing 5 </ b> A, and a mounting hole 6 </ b> A is formed in the flange 6. On the other hand, the receiving side connector 3 is formed with a screw hole 3A corresponding to the mounting hole 6A of the flange 6, and when the connector 5 is mounted, the connector 5 is set so that the mounting hole 6A is aligned with the screw hole 3A. Then, the flange 6 is fixed by passing the bolt 7 through the mounting hole 6A and screwing it into the screw hole 3A.
[0003]
[Problems to be solved by the invention]
However, in the above structure, for screwing the bolt 7, the connector 5 is set on the receiving connector 3 and rotated until the mounting hole 6A of the flange 6 coincides with the screw hole 3A of the receiving connector 3. There is a problem that the procedure of inserting the bolts 7 while maintaining the above is necessary, and the positioning operation must be performed three times, so that the workability is very inferior. In addition, because the work space is small, the positioning status is not always visually confirmed due to the restriction of the operator's standing position, etc., in that case the workability is further reduced, and the work itself may be impossible There was a problem.
[0004]
The present invention has been completed based on the above circumstances, and an object thereof is to provide a connector mounting jig capable of mounting a plurality of connectors with good workability.
[0005]
[Means for Solving the Problems]
As means for achieving the above object, the invention of claim 1 is characterized in that a connector to which an electric wire is connected is set to each of a plurality of receiving side connectors provided in an electric device, and is formed on a flange portion of the connector. A connector mounting jig for connecting each connector to each receiving connector by inserting a bolt into each mounting hole and screwing it into a screw hole of the receiving connector, each connector having A connector holding portion that maintains each connector in a predetermined positional relationship by engaging with an engaging portion, and each mounting hole of each connector that is fixed at a predetermined position with respect to the electrical device. It has a feature in that it is provided with attachment means for holding each screw hole of the electric device in a corresponding state.
[0006]
According to a second aspect of the present invention, the electrical device is provided with a side surface portion extending perpendicularly to a surface on which the receiving side connector is provided, and the connector holding portion is provided on the receiving side connector by being directed to the side surface portion. It has a feature in that it has a positioning wall corresponding to the formed surface.
[0007]
According to a third aspect of the present invention, the connector flange portion according to the first aspect functions as a connector holding portion that uses the connector flange portion as the engagement portion and engages with the flange portion to maintain the connector in a predetermined positional relationship. The accommodation hole is provided on the substrate of the mounting jig installed in parallel with the receiving connector,
Furthermore, an opening is provided in the accommodation hole to accommodate the cylindrical portion of the tip of the impact wrench used for tightening the bolt that fixes the connector and the receiving connector at a predetermined position corresponding to the screw hole of the receiving connector. It has the characteristics.
[0008]
According to a fourth aspect of the present invention, there is provided the method according to the third aspect, wherein the substrate is configured by connecting two upper and lower plate members via hinges, a closed state in which the end surfaces of both plates abut each other, and both plates It is characterized in that it is latched so as to be able to open and close up and down in an open state where the two are separated from each other, and that the accommodation hole is opened across the two upper and lower plate members.
[0009]
[Action and effect of the invention]
<Invention of Claim 1>
According to the present invention, when mounting the connector, first, the connector mounting jig is attached to the predetermined portion of the electric device by the mounting means for holding the connector holding portion of the connector mounting jig in a state corresponding to each screw hole of the electric device. Fix in position.
When the connector is attached, the engagement portion of the connector and the connector holding portion of the connector attachment jig are engaged, so that each attachment hole of each connector corresponds to each screw hole of the electrical device. It becomes a state. Therefore, if the bolt is screwed into the screw hole through each mounting hole, each connector can be fixed in a state of being fitted to the receiving connector of the electric device.
As described above, according to the present invention, since the connector can be set at the normal position, there is an effect that the connector mounting operation can be efficiently performed.
[0010]
<Invention of Claim 2>
According to the second aspect of the present invention, prior to mounting the connector mounting jig, the positioning wall is directed to a predetermined side surface portion (a side surface portion extending perpendicular to the surface on which the receiving connector is provided) of the electrical device. Thereby, since the movement along the surface provided with the receiving connector is restricted, the connector mounting jig can be easily attached to the electric device, and the workability is further improved.
[0011]
<Invention of Claim 3>
When fixing the connector and the receiving connector, the bolt is inserted into a mounting hole formed in the connector flange portion, and is screwed into the screw hole of the receiving connector and fixed using an impact wrench.
According to the invention of claim 3, when the bolt is tightened by the impact wrench, the cylindrical portion at the tip of the impact wrench is inserted into the opening for accommodating the impact wrench provided on the board of the connector mounting jig. Thereby, since the free movement of the impact wrench is restricted by the opening and is stabilized at the bolt tightening position, the workability is further improved.
[0012]
<Invention of Claim 4>
According to the invention of claim 4, when the mounting jig is removed after the assembly of the connector and the receiving connector is completed, the lock of the connector mounting jig is released from the state where the end faces of both plates are abutted. , Open both plates apart.
Here, since the accommodation hole for accommodating the connector is opened across the two upper and lower plate members constituting the substrate, the lower half of the connector is opened from the connector mounting jig.
That is, since the board of the mounting jig is on the upper half of the connector, the connector holding part of the connector mounting jig is then held in a state corresponding to each screw hole of the electrical equipment. If the attachment means is released and the connector attachment jig is removed from the electric device, the connector attachment jig can be easily removed from the electric device.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 10 denotes a terminal block provided in a drive motor of an electric vehicle corresponding to an electric device, for example, made of aluminum die cast and having a box shape. For example, three receiving-side connectors 11 are provided inside the terminal block 10, and three connector insertion holes 12 connected to the receiving-side connector 11 are formed side by side on the front wall 10 </ b> A of the terminal block 10. Yes. The upper end surfaces of the terminal block 10 that are connected to the front wall 10A at a right angle are exposed at the upper end surfaces of the front wall 10A and the side wall 10B, and the others are open. This open upper surface is covered with a terminal block cover (not shown) and fixed by a bolt 27 screwed into a screw hole 13 formed in the upper end surface of the front wall 10A. Further, a screw hole 14 is formed at a predetermined position away from the connector insertion hole 12 in the front wall 10A.
[0014]
On the other hand, the connector 20 connected to the receiving side connector 11 is provided with a plastic housing 22 at the tip of the insulated wire 21, and the insulated wire 21 protrudes to the tip side through the housing 22. A terminal fitting 23 is fixed to the tip by caulking. The housing 22 is formed with a cylindrical fitting cylinder portion 22A that fits in the connector insertion hole 12 of the terminal block 10 on the tip side, and a waterproof rubber ring 24 is fitted on the outer periphery thereof. Yes. When the fitting cylinder portion 22A is fitted into the connector insertion hole 12 of the terminal block 10, the rubber ring 24 is in close contact with the inner peripheral surface and exhibits a waterproof function. Further, a metal flange portion 25 having a teardrop shape is integrally fixed by insert molding at a portion near the tip of the housing 22, and an attachment hole 25 </ b> A for inserting the bolt 26 is formed therein.
[0015]
Three of these connectors 20 are provided corresponding to three insulated wires 21 that supply power from a three-phase power source, and these can be held together by a connector mounting jig 30. This connector mounting jig 30 is formed by, for example, connecting the end portions of two plate materials (the receiving plate 31 and the holding plate 32) via a hinge 33, and closing the end surfaces of both plates 31, 32 together. It can be opened and closed up and down between the state and the open state in which both plates 31 and 32 are separated. The upper end surface of the receiving plate 31 is formed with three recesses 31 </ b> A capable of accommodating the lower half portion of the flange portion 25 of the connector 20, and the upper half portion of the flange portion 25 is formed on the lower end surface of the pressing plate 32. The recesses 32A that can be accommodated are also formed at three locations, and the flange accommodation holes 34 that wrap the flange portion 25 of the connector 20 from the periphery thereof are formed by combining both the recesses 31A and 32A. By closing both plates 31 and 32 of the connector mounting jig 30 and wrapping the flange portion 25 by the flange receiving hole 34, the connector 20 is fixed to the connector mounting jig 30 in a predetermined positional relationship. Become. Therefore, the flange portion 25 corresponds to the engaging portion of the connector 20, and the flange receiving hole 34 corresponds to the connector holding portion that maintains each connector 20 in a predetermined positional relationship by engaging with the engaging portion. As shown in FIG. 4, the lower end portion of the recess 31A of the backing plate 31 is formed larger than the outer shape of the lower half portion of the flange portion 25, and a mounting bolt (to be described later) is attached to that portion. The tip of an impact wrench for tightening can be inserted.
[0016]
The holding plate 32 of the connector mounting jig 30 is provided with a positioning wall 35 projecting from the upper end toward the rear side (the back of the terminal block 10), and the lower surface of the positioning plate 35 is located above the front wall 10A of the terminal block 10. It can come into contact with the end face. Further, of the receiving plate 31 and the holding plate 32, side walls 31B and 32B extending toward the back of the terminal block 10 are protruded from the end portion where the hinge 33 is attached, and this is in contact with the side wall 10B of the terminal block 10. Is possible. A pair of screw insertion holes 36 are formed near both ends of the positioning wall 35, as shown in FIG. 1, and this is equal to the interval between the screw holes 13 and 13 of the terminal block 10.
The connector 20 and the terminal block 10 are screwed into the screw holes 14 formed in the front wall 10 </ b> A of the terminal block 10 by inserting the mounting bolts 26 through the mounting holes 25 </ b> A formed in the flange portion 25 of the connector.
[0017]
The configuration of the present embodiment is as described above. Next, the procedure for assembling the connector 20 will be described.
In attaching each connector 20 to the receiving connector 11, first, a connector mounting jig 30 is assembled to the terminal block 10. For this purpose, the positioning wall 35 of the connector mounting jig 30 is directed to the upper surface of the terminal block 10 and the mounting jig 30 is arranged at a predetermined position. Then, the screw insertion holes 36 formed in the positioning wall 35 of the mounting jig 30 are aligned with the screw holes 13 formed on the upper surface of the terminal block 10 and fixed with bolts.
Next, the connector 20 is brought to a mounting jig mounted on the terminal block 10, and the flange portion 25 of the connector 20 is aligned with the flange receiving hole 34 formed in the mounting jig 30 as shown in FIG. Then, the fitting cylindrical portion 22A of the connector is pushed toward the connector insertion hole 12 of the terminal block.
[0018]
At this time, since the flange portion 25 of the connector 20 acts as an engaging portion and the flange receiving hole 34 of the mounting jig 30 acts as a connector holding portion, the mutual positional relationship between the connector 20 and the terminal block 10 is predetermined. The positional relationship is maintained.
Accordingly, the mounting hole 25 </ b> A formed in the flange portion 25 of the connector 20 naturally matches the screw hole 14 formed in the front wall 10 </ b> A of the terminal block 10. Therefore, the bolt 26 is inserted into the mounting hole 25A and screwed into the screw hole 14 and tightened. The bolt 26 is tightened by the impact wrench 40, but the lower end portion of the recess 31 </ b> A of the receiving plate 31 of the connector mounting jig 30 is formed to be larger than the outer shape of the lower half of the flange portion 25 of the connector 20. The cylindrical portion 41 at the tip of the impact wrench can be inserted. Therefore, when the bolt 26 is tightened, the lower end portion of the recess 31A acts as an invitation for the impact wrench 40 and restricts the free movement of the impact wrench 40, so that the impact wrench 40 is stabilized at the bolt 26 tightening position. .
[0019]
After the three connectors 20 are attached, a hooking portion (not shown) that connects the receiving plate 31 and the pressing plate 32 is released. The receiving plate 31 is rotated by its own weight so as to hang down around the hinge 33 and is separated from the holding plate 32. When the bolt 27 fixing the terminal block 10 and the connector mounting jig 30 is removed, the receiving plate 31 is attached. The jig 30 can be easily removed from the terminal block 10.
[0020]
As described above, according to the present embodiment, the connector mounting jig 30 is set in advance on the terminal block 10, the connector 20 is simply inserted into the flange receiving hole 34 of the mounting jig 30 and the bolt 26 is tightened. Therefore, the positioning operation between the mounting hole 25A of the flange portion 25 and the screw hole 14 is completely unnecessary. During this mounting operation, it is necessary to align the flange portion 25 of the connector 20 so that the flange portion 25 of the connector 20 fits into the flange receiving hole 34 of the mounting jig 30. Since it is larger than the hole 14 and the mounting hole 25A and is easily visible, it is extremely simple compared to the operation of matching the mounting hole 25A and the screw hole 14.
Therefore, workability can be greatly improved even in a work environment where the alignment state between the mounting hole 25A and the screw hole 14 cannot be visually confirmed.
[0021]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
[0022]
(1) In the above embodiment, the connector mounting jig is provided with a substrate on which an accommodation hole for accommodating the flange portion of the connector is disposed, and the substrate is a receiving plate and a holding plate connected via a hinge. However, the hinge may be abolished by configuring the substrate with a single plate material. In this case, the connector mounting jig is mounted as it is after the connector is mounted.
[0023]
(2) In the above embodiment, the connector receiving hole provided on the board of the connector mounting jig is formed at a right angle to the board, but the taper becomes wider at the peripheral edge of the receiving hole toward the connector insertion side. A part may be provided.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention. FIG. 2 is a perspective view in a state where a connector mounting jig is mounted. FIG. 3 is a perspective view when a connector is mounted. Perspective view showing conventional mounting method 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 10 ... Terminal block 10A ... Front wall 11 ... Reception side connector 12 ... Connector insertion hole 13 ... Screw hole 14 ... Screw hole 20 ... Connector 22 ... Housing 22A ... Fitting cylinder part 25 ... Flange part 25A ... Mounting hole 26 ... Bolt 27 ... Bolt 30 ... Connector mounting jig 31 ... Receiving plate 31A ... Recess 32 ... Presser plate 32A ... Recess 33 ... Hinge 34 ... Flange receiving hole 35 ... Positioning wall 36 ... Screw insertion hole

Claims (4)

Set the connectors to which the electric wires are connected to the plurality of receiving connectors provided in the electrical equipment, and insert bolts into the mounting holes formed in the flange portions of the connectors to the screw holes of the receiving connectors. A connector mounting jig for connecting the connectors to the receiving connectors by screwing,
A connector holding portion that maintains each connector in a predetermined positional relationship by engaging with an engaging portion included in each connector, and each of the connectors that is fixed at a predetermined position with respect to the electrical device. And a mounting means for holding the mounting hole in a state corresponding to each screw hole of the electrical device. The electrical device has a side surface portion that extends perpendicularly to the surface on which the receiving connector is provided, and the connector holding portion corresponds to the surface on which the receiving connector is provided by being addressed to the side surface portion. The connector mounting jig according to claim 1, further comprising a positioning wall. A mounting hole that functions as a connector holding portion that uses the connector flange portion as the engaging portion and engages with the flange portion to maintain the connector in a predetermined positional relationship is installed in parallel with the receiving connector. Provided on the substrate of the jig,
Furthermore, an opening is provided in the accommodation hole for accommodating a cylindrical portion at the tip of an impact wrench used for tightening a bolt for fixing the connector and the receiving connector at a predetermined position corresponding to the screw hole of the receiving connector. The connector mounting jig according to claim 1, wherein: The board is constructed by connecting two upper and lower plates via hinges, and can be opened and closed up and down between a closed state where the end surfaces of both plates abut each other and an open state where both plates are separated from each other. The connector mounting jig according to claim 3, wherein the jig is latched so as to be able to be held, and the accommodation hole is opened across two upper and lower plates.

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