JPH0412777Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a motor lead wire fixing device having a printed circuit board incorporating a motor control circuit.

[Conventional example] As shown in FIG. 4, in the prior art, a printed circuit board 3 having a control circuit for a motor is mounted on a supporting piece erected on an end plate 2 made of an electrically insulating material attached to a stator core 1. 4, and cable ties 18 are inserted into two holes drilled in the printed circuit board 3 to bundle the lead wires 5 and fixed to the printed circuit board 3.

Furthermore, the part of the lead wire 5 that is soldered to the printed circuit board 3 is fixed with an adhesive 17, and the lead rubber 19 is attached to the notch 9 of the motor bracket 8.
are used and retained.

[Problems to be Solved by the Invention] According to the above-mentioned conventional example, in order to fix the lead wire 5, the adhesive 17 is used to fix the lead wire 5 to the printed circuit board 3, and the printed board 3 is connected to the printed circuit board 3 using a cable tie 18. It requires work such as bundling the lead wires 5, inserting the lead wires 5 through the lead rubber 19 in advance, requires time for the adhesive 17 to harden, variations in the binding of the cable ties 18, and the need for the lead rubber 19. The workability of insertion, etc., was poor, and the fixing state varied due to individual differences between workers, and the reliability was not sufficient.

This invention is intended to solve the above-mentioned drawbacks, and provides an electric motor lead wire fixing device that can reliably fix the lead wire 5 with simple operations.

[Means for solving the problem] In order to achieve the above object, this invention has the following structure.

A fixing frame for the lead wire drawn out from the printed circuit board is provided on the end plate, and the lead wire inserted into the fixed frame is fixed by a fixing lid piece provided on the printed circuit board. Further, the fixing frame is provided with an engaging portion that engages with a notch provided in the motor bracket, so that the fixing frame is locked to the motor bracket.

[Function] With the above structure, the present invention inserts the lead line between the fixed frame and the fixed lid piece and locks the end plate and the printed circuit board, so that the lead line can be inserted between the fixed cover piece and the fixed frame. can be fixed.

[Embodiments] Hereinafter, embodiments of this invention will be described in detail with reference to the accompanying drawings.

In Figure 1, 1 is the stator core of the motor, 2
is an end plate made of electrically insulating material attached to the end of the stator core. A plurality of support pieces 4 are erected on the end plate 2 to hold a printed circuit board 3 having a control circuit for the electric motor. Each support piece 4 has an engagement claw 10 at its tip that projects inward toward the center,
On the other hand, this engaging claw 10 is provided on the outer periphery of the printed circuit board 3.
A notch 11 is provided corresponding to the . The printed circuit board 3 is fixed in a predetermined position by the engagement of the engagement claws 10 with the notches 11. Furthermore, end plate 2
A fixed frame 6 is disposed to hold the lead wire 5 drawn out from the printed circuit board 3. Further, a fixed lid piece 7 is disposed on the printed circuit board 3 in alignment with the lead-out position of the lead wire 5, and one end of the lead wire 5 is connected to the printed circuit board 3 by soldering or the like.

FIG. 2 is a schematic diagram showing the engagement state between the fixed frame 6 and the fixed lid side 7. As shown in FIG. The fixing frame 6 is U-shaped and consists of an engaging part 13 having opposing locking claws 12 and a fixing surface 14 for fixing the lead wire 5. Insert and fixing surface 1
4, the protruding fixing lid piece 7 arranged on the outer periphery of the printed circuit board is fitted into the fixing frame 6, and the locking claw 1
By fixing with 2, the fixed lid piece 7 and the fixed surface 1
4 and sandwich the lead wire 5. This engagement is performed at the same time as the aforementioned engagement between the printed circuit board 3 and the end plate 2. The fixing frame 6 further fits into the notch 9 of the electric motor bracket 8 to fix the lead wire 5 and prevent the lead wire 5 from being damaged by the notch 9. As shown in FIG. 3, as a specific implementation method, engagement guides 15 are formed on both outer surfaces of the fixed frame 6 as shown in FIG. By doing so, it is possible to securely hold the fixed frame 6 and securely fix the lead wire 5.

Furthermore, regarding the clamping and fixing of the leader wire 5 between the fixing surface 14 and the fixed lid piece 7, the leader wire 5 can be secured by providing a groove 16 corresponding to the outer diameter of the leader wire on the fixing surface 14 as shown in FIG. 3b. It retracts and strengthens the clamping with the fixed lid piece 7 to ensure reliable fixation.

Further, although the fixed frame 6 is integrally formed with the end plate 2 and the fixed lid piece 7 is integrally formed with the printed circuit board 3, even if the fixed frame 6 is an independent member with the same structure that is attached to the printed circuit board 3, the present invention can meet the purpose of

[Effects] As explained above, according to this invention, the use of adhesive 17 to fix the lead wire 5, the punching of the cable tie 18 and the two holes in the printed circuit board 3, and the lead rubber 19 are no longer necessary, and In terms of work, there is no need to leave the adhesive 17 to harden, and in addition, variations in the cable ties 18 between workers are eliminated, and the lead wire 5 can be easily fixed in one operation, ensuring highly reliable work. can be done.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the lead wire fixing device according to the present invention, FIGS. 2 and 3 are schematic views showing the engagement state of the fixing frame 6 and the fixing lid piece 7, and FIG. FIG. 2 is a perspective view showing a conventional example. In the figure, 1 is a fixed core, 2 is an end plate, 3 is a printed circuit board, and 4 is a fixed iron core.
5 is a support piece, 5 is a leader line, 6 is a fixed frame, 7 is a fixed lid piece, 8 is a motor bracket, 9 is a notch, 10 is an engaging claw that engages the printed circuit board, and 11 is engaged with the above-mentioned engaging claw. 12 is a locking claw provided on the fixed frame, 13 is an engaging portion with the fixed lid piece, 14 is a fixed surface, 15 is an engagement guide, and 16 is a groove provided on the fixed surface.

Claims (1)

[Claims for Utility Model Registration] (1) A print having an end plate made of an electrically insulating material attached to the end of a stator core, and having a motor control circuit supported by a support piece erected on the end plate. In an electric motor that holds a circuit board, the end plate is provided with a fixing frame for a lead wire drawn out from the printed circuit board, and a fixed lid piece is disposed on the printed circuit board for fixing the lead wire inserted into the fixing frame. Electric motor lead wire fixing device. (2) The electric motor lead line fixing device according to claim 1 of the utility model registration, wherein the fixing frame is provided with an engaging portion that engages with a notch provided in the motor bracket. (3) A leader wire fixing device for an electric motor according to claim 1 of the utility model registration, wherein a groove into which the leader wire is inserted is formed in the fixing surface of the leader wire fixing frame.