JP4717987B2 - Fixing structure of lead wire in motor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing structure for fixing a lead wire for supplying power to the motor from the outside to the motor.
[0002]
[Prior art]
For example, a motor used as a drive source of a vehicle power window device is disposed in a narrow space between an outer panel and an inner panel of a door. In addition, since many other devices are arranged in the space, a lead wire for supplying power to the motor from the outside is easily caught on other members. Therefore, in order to prevent the lead wire from being caught by other members and making the motor installation work complicated, conventionally, the lead wire 54 is bound and fixed to the motor 51 as shown in FIG. It was.
[0003]
That is, the motor 51 is configured by integrally assembling a motor main body 52 and a speed reducing unit 53 that outputs the motor main body 52 by reducing the rotation of the motor main body 52. The motor 51 supplies power to the motor 51 from the speed reducing unit 53. A lead wire 54 is extended. The lead wire 54 is disposed along the longitudinal direction of the outer peripheral surface of the motor main body 52, and is bound and fixed to the motor main body 52 by a known insulation lock 55. The insulation lock 55 is formed in a strip shape from a synthetic resin material, and a locking hole 55a is formed at one end thereof (see FIG. 4A). In addition, locking projections 55b are formed at equal intervals on one side of the insulation lock 55.
[0004]
Next, the procedure for fixing the lead wire 54 with the insulation lock 55 will be described. First, as shown in FIG. 4A, the operator inserts the other end of the insulation lock 55 into the engagement hole 55a, and the motor main body 52 and The lead wire 54 has an annular inner diameter into which the lead wire 54 can be inserted, and the annular insulation lock 55 is inserted into the lead wire 54 and the motor main body 52.
[0005]
Next, when the insulation lock 55 is inserted to a predetermined position in the longitudinal direction of the motor body 52, a known insulation lock fastener (not shown) is used to pull the other end of the insulation lock 55, and the inner diameter of the annular insulation lock 55 is reduced. It is narrowed and tightened. At this time, since the locking projection 55b is locked to the inner peripheral surface of the locking hole 55a, the other end of the insulation lock 55 is prevented from coming out of the locking hole 55a. When the lead wire 54 is securely fixed to the motor body 52, the other end side protruding from the locking hole 55a of the insulation lock 55 is cut by the operator as shown in FIG. 4B.
[0006]
[Problems to be solved by the invention]
However, although it is desirable that the motor 51 used in the power window device be made smaller, a portion B where both ends of the insulation lock 55 are connected to each other protrudes outward from the outer peripheral surface of the motor main body 52. Therefore, the motor 51 is prevented from being downsized.
[0007]
Further, since the insulation lock 55 needs to cut the other end protruding from the locking hole 55a, the cut end 55c is generated, waste is increased, and the cut end 55c is useless. It is expensive.
[0008]
Also, the operation of inserting the other end of the insulation lock 55 into the locking hole 55a or inserting the annular insulation lock 55 together with the lead wire 54 to a predetermined position of the motor main body 52 is a complicated operation and is automated. It is not suitable, and the fixing work by the insulation lock 55 largely depends on the manual work. Therefore, the cost is high as described above.
[0009]
Moreover, since the insulation lock 55 is fixed manually, the accuracy of the tightening position of the insulation lock 55 is poor. This causes a problem that the insulation lock 55 is disengaged and the connecting portion B of the insulation lock 55 interferes with other members.
[0010]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lead wire fixing structure in a motor that can reduce the cost and reduce the size of the motor and is suitable for automation. There is.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the invention described in claim 1 is to fix the lead wire extended from the housing to the metal yoke housing provided in the housing so as to supply power to the motor from the outside. A lead wire fixing structure in a motor, wherein the yoke housing is formed in a flat cylindrical shape having a flat portion and an arc portion in a circumferential direction, and the lead wire is a longitudinal length of an outer peripheral surface of the arc portion of the yoke housing. A tape member made of a thermoplastic resin material that is arranged along the direction and has elasticity is wound around the outer periphery of the yoke housing from the outside of the lead wire at a predetermined position in the longitudinal direction of the yoke housing, and tightened. one end and overlap to form part of, those pushing the overlapping portion on the outer peripheral surface of the planar portion of the yoke housing Rutotomoni were so welded by heating the overlapping portion on the outer peripheral surface of the flat portion.
[0014]
(Function)
According to the first aspect of the present invention, the tape member made of the thermoplastic resin material is wound around the outer periphery of the housing from the outside of the lead wire and tightened, and a portion overlapping with one end of the tape member is formed. The heated part is heated and welded. With such a tape member, the lead wire is bound and fixed to the housing. Therefore, the fixing operation using the tape member is not a complicated operation and is suitable for automation. Further, since the cut end of the tape member does not occur when fixing the lead wire, the tape member can be used without waste. In addition, the protrusion of the tape member from the outer peripheral surface of the housing to the outside is extremely small because even the most protruding overlapping portion is the thickness of the two tape members.
[0015]
The tape member is wound around the outer periphery of a metal yoke housing and welded on the outer peripheral surface thereof. Therefore, for example, when a tape member is wound around the outer periphery of a resin housing and welding is performed on the outer periphery, the resin housing may be deformed by heat at the time of welding, but the yoke housing is made of metal. Therefore, there is no worry about that.
[0016]
The yoke housing is formed in a flat cylindrical shape, and the tape member is welded on the outer peripheral surface of the flat portion of the yoke housing. Therefore, for example, when welding the tape member by pressing the welding jig toward the outer peripheral surface of the yoke housing, the tape member can be easily and reliably welded if the welding is performed on the flat portion of the housing. Can do.
Further, since the tape member has further elasticity, the fastening force of the tape member is maintained, and the lead wire can be securely fixed by the housing.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a motor 1 of this embodiment used in a vehicle power window device. The motor 1 includes a motor body 2 and a speed reduction unit 3 that decelerates and outputs the rotation of the motor body 2, and houses a metal yoke housing 4 that houses the components of the motor body 2 and the components of the speed reduction unit 3. The resin gear housing 5 is integrally assembled by screws 6. A lead wire 7 for supplying power to the motor 1 is extended from the gear housing 5, and a connector (not shown) is provided at the tip of the lead wire 7. The lead wire 7 is held at a predetermined location by a latching portion 5 a and a holding member 8 that are integrally provided in the gear housing 5.
[0018]
Here, the yoke housing 4 is formed in a bottomed flat cylindrical shape, and includes a pair of plane portions 4a that are parallel to each other and a pair of arc portions 4b that connect both ends of the plane portion 4a. The lead wire 7 is disposed along the longitudinal direction of the outer peripheral surface of the arc portion 4 b and is bound and fixed to the yoke housing 4 by a fixing tape 9. The fixing tape 9 is formed in a strip shape from a thermoplastic resin material having elasticity. The fixing tape 9 is continuous at a predetermined length before being used for fixing, and is wound, for example, in a roll shape.
[0019]
Next, the procedure for fixing the lead wire 7 with the fixing tape 9 will be described. First, the motor 1 is positioned and placed on a table of a tape mounting machine (not shown), and as shown in FIG. The lead wire 7 is set along the longitudinal direction of the outer peripheral surface of the arc portion 4 b of the yoke housing 4.
[0020]
Next, the fixed tape 9 is wound around the outer periphery of the housing 4 from the outside of the lead wire 7 at a predetermined position in the longitudinal direction of the yoke housing 4 by the tape mounting machine. At this time, one end of the fixing tape 9 is disposed on the flat portion 4 a of the yoke housing 4.
[0021]
Next, the fixing tape 9 is tightened with a predetermined tightening force so that the lead wire 7 is securely fixed to the yoke housing 4, and the welding jig 10 provided in the tape mounting machine is placed on the portion A where one end of the fixing tape 9 overlaps. It abuts and is pressed against the outer surface of the flat portion 4 a of the yoke housing 4. The tip end face of the welding jig 10 is a flat surface. Then, the overlapping portion A of the fixing tape 9 is heated by the welding jig 10 to weld the tape 9 to each other, and the wound fixing tape 9 and the remaining fixing tape 9 are cut and separated. Since the fixing tape 9 is made of a stretchable material, the fastening force of the tape 9 is maintained, and the lead wire 7 is securely fixed by the yoke housing 4.
[0022]
Thus, in this embodiment, since the fixing operation of the lead wire 7 by the fixing tape 9 is not complicated, automation by a tape mounting machine is performed. Further, since the cut end of the fixing tape 9 does not occur when fixing the lead wire 7, the fixing tape 9 can be used without waste, and the protrusion of the fixing tape 9 from the outer peripheral surface of the yoke housing 4 to the outside is the most. Even the protruding overlapping portion is very small because it is the thickness of the two fixed tapes.
[0023]
As described above, the present embodiment has the following effects.
(1) In the present embodiment, the fixing tape 9 made of a thermoplastic resin material is wound around the outer periphery of the yoke housing 4 from the outside of the lead wire 7 and tightened, and a portion A that overlaps one end of the tape 9 is formed. The overlapped portion A is heated and welded, and the lead wire 7 is fixed. Accordingly, the fixing work with the fixing tape 9 is not complicated as compared with the conventional work of inserting the other end of the insulation lock 55 into the locking hole 55a, and is suitable for automation as described above. Further, by using automation as described above, the accuracy of the fastening position of the fixing tape 9 can be made excellent.
[0024]
(2) In this embodiment, when the lead wire 7 is fixed, the fixed tape 9 is not cut, so that the tape 9 can be used without waste and the cost can be reduced.
[0025]
(3) In this embodiment, the protrusion of the fixing tape 9 from the outer peripheral surface of the housing 4 to the outside is extremely small because even the most protruding overlapping portion A is the thickness of the two tape members. be able to. Therefore, it can contribute to the miniaturization of the motor 1. In particular, since the motor 1 is used in a power window device having a narrow mounting position, the effect is great.
[0026]
(4) In this embodiment, the fixing tape 9 is wound around the outer periphery of the metal yoke housing 4 and welded on the outer peripheral surface thereof. Therefore, for example, when the fixing tape 9 is wound around the outer periphery of the resin gear housing 5 and welding is performed on the outer peripheral surface, the housing 5 may be deformed by heat at the time of welding. Because it is made of metal, there is no worry.
[0027]
(5) In the present embodiment, the fixing tape 9 is welded on the outer peripheral surface of the flat portion 4 a of the yoke housing 4. Therefore, in the tape loading machine of the present embodiment in which the fixing jig 9 is welded by pressing the welding jig 10 toward the outer peripheral surface of the yoke housing 4, by performing the welding on the flat portion 4 a of the housing 4, The fixing tape 9 can be easily and reliably welded.
[0028]
(6) Since the fixing tape 9 of this embodiment has elasticity, the fastening force of the tape 9 is maintained, and the lead wire 7 can be reliably fixed by the yoke housing 4.
[0029]
In addition, you may change embodiment of this invention as follows.
In the above embodiment, the fixing tape 9 is wound around the position in the longitudinal direction shown in FIG. 1, but is not limited to this position.
[0030]
In the above embodiment, the fixing tape 9 is welded on the outer peripheral surface of the flat portion 4a of the yoke housing 4, but may be welded on the outer peripheral surface of the arc portion 4b.
[0031]
In the above embodiment, the fixing tape 9 is wound around the outer periphery of the metal yoke housing 4 and welded on the outer peripheral surface thereof. If so, it may be performed on the outer periphery of the gear housing 5.
[0032]
In the above embodiment, the fixed tape 9 having stretchability is used. However, as long as the tightening force of the tape 9 can be maintained, it may not have stretchability.
-You may change suitably the structure of the motor 1 in the said embodiment. For example, the yoke housing 4 has a bottomed flat cylindrical shape, but may be a simple cylindrical yoke housing. Moreover, the deceleration part 3 does not need to be provided in particular.
[0033]
In the above embodiment, the lead wire fixing structure is implemented in a motor for a vehicle power window device, but may be implemented in other motors used in vehicles or motors other than vehicles.
[0034]
It is described below technical ideas that can be grasped from the above embodiments.
(B) pre-Symbol tape member, it characterized as having a more elastic. In this case, the fastening force of the tape member is maintained, so that the lead wire can be reliably fixed by the housing.
[0035]
(B) before SL motor, characterized in that for use in a power window system of a vehicle. In this way, the motor is reduced in size, which is suitable for a power window device having a small motor mounting space.
[0036]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide a lead wire fixing structure in a motor that can suppress the increase in size of the motor and reduce the cost and that is suitable for automation.
[Brief description of the drawings]
FIG. 1 is a plan view showing a motor according to an embodiment.
FIG. 2 is a diagram for explaining a lead wire fixing method according to the present embodiment;
FIG. 3 is a plan view showing a conventional motor.
FIG. 4 is a diagram for explaining a conventional lead wire fixing method;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Motor, 4 ... Yoke housing as housing, 4a ... Planar part, 5 ... Gear housing as housing, 7 ... Lead wire, 9 ... Fixed tape as tape member, A ... Overlapping part.

Claims (1)

A lead wire fixing structure in a motor that binds and fixes a lead wire extended from a housing to supply power to the motor from the outside and is fixed to a metal yoke housing provided in the housing,
The yoke housing is formed in a flat cylindrical shape having a flat portion and an arc portion in the circumferential direction, and the lead wire is disposed along the longitudinal direction of the outer peripheral surface of the arc portion of the yoke housing,
A tape member made of a thermoplastic resin material having elasticity is wound and tightened from the outside of the lead wire to the outer periphery of the yoke housing at a predetermined position in the longitudinal direction of the yoke housing, and a portion overlapping with one end of the tape member is formed. And the overlapping portion is pressed against the outer peripheral surface of the planar portion of the yoke housing, and the overlapping portion is heated and welded on the outer peripheral surface of the planar portion. Wire fixing structure.

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