JP3641307B2 - Motor lead wire outlet structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lead wire outlet structure of a motor, and more particularly to a novel improvement for obtaining a simple and reliable waterproofing by a tapered wall of a lead wire guide body and a narrow diameter portion of a guide hole of a lead wire.
[0002]
[Prior art]
Conventionally, as a lead wire outlet structure of this type of motor that has been used in the past, a hole through which the lead wire penetrates is generally provided in a housing case with a built-in stator, and the lead is led through a rubber grommet provided in this hole. The line was led out.
[0003]
[Problems to be solved by the invention]
Since the conventional lead wire outlet structure of the motor is configured as described above, the following problems exist. That is, after connecting a lead wire to the stator winding, in order to fix the lead wire to the housing case and to draw the lead wire to the outside, the guide hole of the grommet provided in the hole must be penetrated. The lead wires are difficult to route and workability is poor, and the structure is extremely unsuitable as a mass production motor.
[0004]
The present invention has been made to solve the above-described problems, and in particular, a simple and reliable waterproofing is obtained by the tapered wall of the lead wire guide body and the narrow diameter portion of the guide hole of the lead wire. An object is to provide a lead wire outlet structure of a motor.
[0005]
[Means for Solving the Problems]
The lead wire outlet structure of the motor according to the present invention includes a housing case containing a stator having a stator winding, and a protrusion integrally formed outward from a part of the outer periphery of the housing case along the radial direction of the stator. And provided in a drawer recess having a longitudinal direction in a direction perpendicular to the projecting direction of the projecting portion, connected to the stator winding and juxtaposed along the projecting direction. A lead wire guide body having a plurality of guide holes for guiding a plurality of lead wires, and a O-ring groove formed in a U-shape of the housing case and continuous with the O-ring groove of the lead wire guide body and O-ring positioned in succession in the guide groove, the front lid for pressing the O-ring and the lead wire guide member detachably provided on an end face of the housing case In the lead wire outlet structure of a motor with a tapered wall spreading in the direction outside is formed on an inner wall of the drawer recess is formed in the guide hole and the small diameter of the small diameter portion than the diameter of the inlet of the guide hole, A taper side portion formed on the outer wall of the lead wire guide body, a concave strip portion formed in the recess for drawing, and a convex strip portion formed on the outer periphery of the lead wire guide body and fitted into the concave strip portion; The tapered side portions are configured to be joined to the tapered wall.
[0006]
Therefore, since the lead wire can be provided in the housing case only by placing the lead wire guide body in the recess for drawing out of the housing case after passing the lead wire through each guide hole of the lead wire guide body in advance, It is very easy to attach the lead wire to the housing case. In addition, the taper side portion of the lead wire guide body is joined to the tapered wall of the recess for drawing out of the housing case, and the lead wire is provided through the small diameter portion formed in the guide hole of the lead wire guide body. A reliable waterproof structure can be achieved by the tapered wall and the small diameter portion.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a lead wire outlet structure for a motor according to the present invention will be described in detail with reference to the drawings.
In FIG. 1, a reference numeral 1 denotes a cup-shaped housing case in a state in which the front lid 2 is removed, and a stator 4 having a stator winding 3 is incorporated inside the housing case 1. An O-ring groove 5 having a substantially U-shape is formed on the end surface 1 a of the housing case 1. A drawer recess 6 is formed in the protrusion 1 b, and a guide is provided in the drawer recess 6. A lead wire guiding body 7 having a groove 8 is fitted. The O-ring groove 5 and the guide groove 8 are continuously configured to be connected to each other. The protruding portion 1b is integrally formed outward from a part of the outer periphery of the housing case 1 along the radial direction of the stator 4, and the drawing recess 6 is formed on the surface of the protruding portion 1b. The longitudinal direction B is provided in a direction orthogonal to the direction A.
[0008]
In the O-ring groove 5 and the guide groove 8, one endless O-ring 9 is continuously fitted so as to straddle them, and a plurality of guides formed on the lead wire guide body 7. In the hole 10, a narrow diameter portion 11 having a diameter smaller than the diameter of the inlet of the guide hole 10 is formed, and the lead wire 12 penetrating through each guide hole 10 is mixed with the small diameter portion 11. It is constructed with a waterproof structure that prevents water or moisture from the outside. The lead wires 12 are juxtaposed along the protruding direction A.
The lead wire 12 is connected to an L-shaped connection fitting 13 connected to the lead wire 12, and the stator winding 3 is connected to the L-type connection fitting 13 so that the stator winding 3 and the lead are connected. The line 12 is connected to each other.
[0009]
As shown in FIG. 4, the inner wall of the pull-out recess 6 is formed with a tapered wall 20 that is expanded outward, that is, toward the upper side of FIG. 4, and a concave strip portion 21 is formed on the tapered wall 20. The outer wall of the lead wire guide body 7 is also provided with a tapered side portion 7a formed in a tapered shape along the tapered wall 20, and is fitted with the concave portion 21 as shown in FIGS. Convex ridges 22 for mating are formed.
[0010]
Therefore, in the above-described configuration, when the lead wire guide body 7 in which the lead wire 12 is previously passed through the guide hole 10 is inserted into the drawer recess 6, the lead wire 12 can be easily attached to the housing case 1. The stator winding 3 can be connected. Further, in this state, after the O-ring 9 is continuously inserted into the O-ring groove 5 and the guide groove 8, the front lid 2 is attached to the end surface 1a of the housing case 1 via a bolt or the like, thereby A motor with the wire 12 drawn out can be configured. Therefore, a waterproof structure is achieved by the narrow diameter portion 11 of the guide hole 10 through which the lead wire 12 passes, the tapered wall 20 of the recess 6 for drawing out, and the O-ring 9.
[0011]
【The invention's effect】
Since the lead wire outlet structure of the motor according to the present invention is configured as described above, the following effects can be obtained. In other words, the lead wire can be drawn out by simply inserting the lead wire in advance and fitting the lead wire guide into the drawer recess of the housing case and attaching the front cover. Can be facilitated.
In addition, a reliable waterproof structure can be easily obtained by the tapered wall formed in the drawer recess of the housing case and the narrow diameter portion of the guide hole through which the lead wire passes.
[Brief description of the drawings]
FIG. 1 is a plan view showing a lead wire outlet structure of a motor according to the present invention.
FIG. 2 is a cross-sectional view of FIG.
3 is a plan view showing a state in which an O-ring and a lead wire guide body of FIG. 1 are removed. FIG.
4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is a half sectional view of a lead wire guiding body.
6 is a bottom view of FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing case 2 Front lid 3 Stator winding 4 Stator 6 Draw-out recessed part 7 Lead wire guide 7a Tapered side part 8 Guide groove 9 O-ring 10 Guide hole 11 Narrow diameter part 12 Lead wire 20 Taper wall 21 Convex part 22 Convex Section
1b Protrusion
A Protruding direction
B Longitudinal direction
5 O-ring groove

Claims (1)

A housing case (1) containing a stator (4) having a stator winding (3) and a part of the outer periphery of the housing case (1) are integrally formed outward along the radial direction of the stator (4). protruding portions and (1b), the projecting portion is formed on the surface the drawer recess (6) having a longitudinal (B) in a direction to protrude perpendicular to the direction (a) of (1b) of the protrusion (1b) A lead wire having a plurality of guide holes (10) for guiding a plurality of lead wires (12) provided and connected to the stator winding (3) and arranged in parallel along the protruding direction (A) A guide body (7) and a guide provided in an O-ring groove (5) forming a U-shape of the housing case (1 ) and continuing to the O-ring groove (5) of the lead wire guide body (7). An O-ring (9) continuously located in the groove (8), and an O-ring (9) and the lead wire guide (7) provided detachably on the end surface (1a) of the housing case (1). Press In the lead wire outlet structure of a motor and a front cover (2) of the eye, the the drawer recess (6) formed on the inner wall of the outwardly expanding tapered wall (20), said guide hole (10) A narrow diameter portion (11) formed smaller than the diameter of the inlet of the guide hole (10), a tapered side portion (7a) formed on the outer wall of the lead wire guide body (7), and the recess for drawing out concave portion formed in (6) and (21), provided with a convex portion (22) which is formed to fit into the concave portion (21) on the outer periphery of the lead wire guide member (7), wherein A lead wire outlet structure for a motor, wherein each tapered side portion (7a) is configured to be joined to the tapered wall (20).

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