JP2018007368A - Bushing and motor - Google Patents

Abstract

To provide a bushing capable of preventing water from entering and a motor in which water does not easily enter. A bushing includes a housing (1) having a seamless outer periphery and a through hole (2), and an insertion member (20) inserted into the through hole (2) of the housing (1). In addition, the inner surface of the through hole (2) of the housing (1) and the outer surface of the insertion member (20) are configured to hold the lead wire (30). [Selection] Figure 1

Description

  The present invention relates to a bushing and a motor.

  Conventionally, as a bushing for holding a lead wire of a motor, as shown in FIGS. 6 and 7 of Japanese Patent Application Laid-Open No. 2009-112067 (Patent Document 1), the bushing is composed of a two-part sandwiching member that sandwiches a lead wire. There is something. This bushing is inserted into the resin main body of the motor, and a rubber waterproof member is disposed between the recess of the resin main body and the bushing so that water does not enter the motor.

JP 2009-112067 A

  However, in the above-described conventional bushing, the lead wire is sandwiched between two split members, so even if the mating surface (interface) of the sandwich member is exposed on the outer peripheral surface of the bushing and there is a waterproof member, this interface There is a problem that water enters the bushing from the inside and eventually enters the motor.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a bushing that can prevent water from entering the motor and a motor that is difficult for water to enter.

In order to solve the above problem, the bushing of the first invention is:
A housing having a seam in the outer periphery and having a through hole;
An insertion member inserted into the through hole of the housing,
The inner surface of the through hole of the housing and the outer surface of the insertion member are configured to be able to hold a lead wire.

  According to the bushing of the above configuration, the lead wire is held by the inner surface of the through hole of the housing and the outer surface of the insertion member inserted into the through hole, and there is no seam in the outer periphery of the housing. This housing can prevent water from entering between the inner surface of the through hole of the housing holding the lead wire and the outer surface of the insertion member.

  Therefore, according to this bushing, water can be prevented from entering the motor.

In one embodiment,
On the inner surface of the through hole of the housing has a first holding portion for holding the lead wire,
A second holding part for holding the lead wire on the outer surface of the insertion member;
The first holding part and the second holding part can face each other and hold the lead wire.

  According to the embodiment, the lead wire can be reliably held by the first holding portion on the inner surface of the through hole of the housing and the second holding portion on the outer surface of the insertion member, and these can be Since the surrounding housing is not exposed to the outside, water does not easily enter these portions.

In one embodiment,
The first holding part and the second holding part are curved concave parts.

  According to the embodiment, since the first holding portion and the second holding portion are curved concave portions, the first holding portion and the second holding portion, which are the curved concave portions, securely connect the lead wires without any gaps. Can be gripped.

In one embodiment,
At least one end of the housing in the penetrating direction of the through hole has a bulging convex portion.

  According to the above embodiment, the end of the housing having the bulged convex portion is directed downward, so that the bulged convex portion can prevent water from entering the housing.

In one embodiment,
The bulged convex portion is continuous in an annular shape so as to surround the lead wire.

  According to the above embodiment, the bulged convex portion is formed in a ring shape so as to surround the lead wire, so that water penetrates into the housing by the continuous bulged convex portion. Thus, water can be prevented from entering the inside along the lead wire.

In one embodiment,
The length of the housing in the direction in which the through hole extends is longer than the length of the insertion member in the direction in which the through hole extends, and the inner peripheral surface of the lower portion of the housing and the lower end surface of the insertion member Thus, a recess is formed.

  When the bushing is disposed with the concave portion facing downward, the water adhering to the outer peripheral surface of the housing can be dropped by the concave portion without entering the inside of the housing.

In one embodiment,
The lower portion of the housing and the lower portion of the insertion member form an individual recess that forms a gap around the lower portion of the lead wire.

  According to the above embodiment, the individual recesses that form the gap around the lower portion of the lead wire are formed, so that water droplets or the like dripped along the outer surface of the housing enter the inside along the lower portion of the lead wire. Can be prevented.

In one embodiment,
The housing and the insertion member are made of resin.

  According to the embodiment, since the housing and the insertion member are made of resin, they are not excessively elastic compared to the case where they are made of rubber, so that the assembling property is improved.

In one embodiment,
A plurality of the insertion members are provided.

  When many lead wires are held by the outer surface of one insertion member and the inner surface of the through hole of the housing, and when the one insertion member is inserted into the through hole of the housing, the insertion member becomes the outer surface of many lead wires. It may be difficult to insert into the through hole due to frictional resistance.

  However, as in the embodiment described above, when a plurality of insertion members are provided, the frictional resistance between each insertion member and the outer surface of a small number of lead wires corresponding to each insertion member is reduced, and each insertion member is It becomes easy to insert into the through hole of the housing.

In one embodiment,
Located between at least two portions of the first holding portion in the direction in which the lead wire extends, and positioned between at least two portions of the second holding portion in the direction in which the lead wire extends. And a recess for forming a gap around the lead wire.

  According to the embodiment, the air gap is located between the at least two portions of the first holding portion and between the at least two portions of the second holding portion and around the lead wire. Therefore, it is possible to prevent the water from entering the inside through the lead wire by forming a gap for edging by these recesses.

In one embodiment,
The engaging portion provided in the through hole and the engaging portion provided in the insertion member are engaged in the through direction of the through hole.

  According to the above embodiment, since the engaging portion provided in the through hole and the engaging portion provided in the insertion member are engaged in the through direction of the through hole, the insertion member is removed from the through hole. It can be prevented from falling off.

The bushing of this second invention is
It is characterized by being a cylindrical body having a bulging convex portion that is continuous in an annular shape so as to surround the lead wire at at least one end in a direction in which the lead wire penetrates.

  In this second aspect of the invention, when the bulged convex portion that is continuous in an annular shape so as to surround the lead wire is disposed downward, the bulged convex portion that is continuous in an annular shape without any breaks penetrates water into the cylinder. Can be prevented.

In the motor of one embodiment,
A part of any of the above bushings protrudes or is exposed from the main body.

  Since the above-described bushing is used in the motor of the above embodiment, even if a part of the bushing protrudes or is exposed from the main body, water such as rain may enter the motor through the bushing or the lead wire. Absent.

In one embodiment, the motor
A body made of resin;
A stator,
A rotor,
Including any of the above bushings,
The stator and the bushing are integrated with a molded main body made of the resin.

  According to the motor of the above embodiment, since the bushing having a housing with a seamless outer peripheral surface and the molded resin main body are integrated, water can be prevented from entering the motor. The rubber waterproof member as in the conventional example can be dispensed with, and the cost can be reduced.

In one embodiment of the motor, the bushing faces downward and protrudes or is exposed from the main body.

  According to the embodiment, since the bushing faces downward and protrudes or is exposed from the main body, it is difficult for water to enter the housing.

  According to the first aspect of the present invention, the lead wire is held by the inner surface of the through hole of the housing having no seam around the outer periphery and the outer surface of the insertion member inserted into the through hole, so that water enters the bushing. Can be prevented.

  According to the second aspect of the invention, since the bushing body has a bulging convex portion that is continuous in an annular shape so as to surround the lead wire, at least one end of the bushing main body in the direction in which the lead wire penetrates. It is possible to prevent water from penetrating into the housing by the bulging convex portions that are continuous in an annular shape.

It is a disassembled perspective view of the bushing of 1st Embodiment of this invention. It is sectional drawing of the housing of the bushing of 1st Embodiment. It is sectional drawing of the bushing of 1st Embodiment. It is a front view of the insertion member of the bushing of a 1st embodiment. It is a perspective view of the bushing of 1st Embodiment. It is sectional drawing of the lower part of the bushing of 1st Embodiment. It is a disassembled perspective view of the bushing of 2nd Embodiment of this invention. It is a perspective view of the bushing of 2nd Embodiment. It is sectional drawing of the housing of the bushing of 2nd Embodiment. It is a front view of the insertion member of the bushing of 2nd Embodiment. It is a front view of the insertion member of the bushing of 3rd Embodiment of this invention. It is sectional drawing of the bushing of 4th Embodiment of this invention. It is sectional drawing of the motor of 5th Embodiment of this invention.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
As shown in FIG. 1, the bushing according to the first embodiment of the present invention is a substantially plate-like insertion inserted into a substantially rectangular tube-shaped housing 1 and a substantially rectangular through hole 2 of the housing 1 in the direction of arrow X. And the member 20. As shown in FIGS. 3 and 5, lead wires 30, 30, 30 are held by the inner surface of the through hole 2 of the housing 1 and the outer surface of the insertion member 20. The housing 1 and the insertion member 20 are made of resin.

  As shown in FIG. 1, the outer peripheral surface of the housing 1 has no seam, while the land portion 3 on the inner peripheral surface of the housing 1 has grooves 5, 5 having a substantially arcuate cross section as a first holding portion. 5 These arc-shaped grooves 5, 5, and 5 are examples of curved concave portions. On the other hand, on one side of the outer surface of the insertion member 20, grooves 25, 25, 25 serving as second holding portions having a substantially arc-shaped cross section are provided. The arc-shaped grooves 25, 25, 25 are an example of a curved recess.

  The substantially arc-shaped grooves 5, 5, 5 on the inner peripheral surface of the housing 1 and the substantially arc-shaped grooves 25, 25, 25 on the outer surface of the insertion member 20 face each other, so that three lead wires 30, 30, 30 is securely gripped.

  2 and 3, between the upper portions 5a, 5a, 5a of the substantially arc-shaped grooves 5, 5, 5 on the inner surface of the housing 1 and the lower portions 5b, 5b, 5b. Is provided with a substantially rectangular recess 17. As shown in FIG. 3, the depth of the recess 17 is greater than the depth of the substantially arc-shaped grooves 5, 5, 5, and the inner surface of the recess 17 has lead wires 30, 30, 30. It is supposed not to touch. As shown in FIGS. 1 and 4, the grooves 25, 25, 25 on the outer surface of the insertion member 20 have substantially circular arc-shaped grooves 25, 25, 25 and upper portions 25a, 25a, 25a and lower portions 25b, 25b, 25b. A substantially rectangular recess 27 is provided between them. As shown in FIG. 3, the depth of the recess 27 has a depth larger than the depth of the substantially arc-shaped grooves 25, 25, 25, and the inner surface of the recess 27 has lead wires 30, 30, 30. It is supposed not to touch. The recesses 17 and 27 form an edge-cutting gap 37, and the water transmitted through the lead wires 30, 30, and 30 is blocked by the edge-cutting gap 37, so that water enters the inside. Try to prevent.

  Further, on both sides in the width direction of the through hole 2, as shown in FIGS. 1 and 2, substantially rectangular engagement holes 6, 6 as an example are provided in the engagement portion. As can be seen from FIG. 2, the engagement holes 6 and 6 are located on both sides of the upper portion on one side of the inner surface of the housing 1. On the other hand, as shown in FIG. 1, substantially rectangular engaging convex portions 26, 26 as an example of engaging portions are provided on both sides of the upper portion on one side of the outer surface of the insertion member 20. Due to the engagement of the engagement holes 6, 6 and the engagement projections 26, 26 in the penetration direction of the through hole 2, the insertion member 20 is prevented from dropping downward from the through hole 2 of the housing 1.

  In addition, the engaging part provided in the housing 1 and the insertion member 20 is not limited to the above-described engaging hole 6 and the engaging convex part 16, and may be an engaging convex part and an engaging hole. The shape is not limited to a rectangle, and may be any shape as long as it is engaged.

  As shown in FIGS. 2, 3, 5, and 6, the end of the housing 1 on the lower portion 10 side has a convex portion 11 that bulges downward. The water descending along the outer surface of the housing 1 is guided downward and dropped from the housing 1 so as not to enter the housing 1. More specifically, as shown in FIG. 6, the water droplet W falling along the outer peripheral surface of the housing 1 is caused to bulge by the portion 11 a on the outer peripheral surface side of the housing 1 of the convex portion 11 bulging downward. It is guided toward the front end 11c, and it is separated from the housing 11 from the front end 11c and falls. On the other hand, since the portion 11b on the inner peripheral surface side of the housing 1 of the convex portion 11 bulging downward is an upward curved surface from the tip 11c, the water droplet W rises along the portion 11b on the inner peripheral surface side. The water droplet W is unlikely to enter the housing 1 because it resists gravity. Therefore, it is possible to prevent water droplets from entering the inner peripheral surface side of the housing 1 by the convex portion 11 bulging downward.

  Note that the convex portion 11 bulging downward is not limited to a circular arc shape in cross section, and may be an elliptical cross section, a parabolic cross section, a stepped hyperbolic shape, etc. It may be.

  Further, the bulged convex portion 11 is connected to the entire lower end surface of the housing 1 in an annular shape and surrounds the lead wires 30, 30, 30.

  In this way, since the annular bulged convex portion 11 is seamless and surrounds the entire lead wires 30, 30, 30, the water descending along the outer surface of the housing 11 can enter the inside of the housing 1. The water droplet W can be guided downward from the housing 1 and dropped while reliably preventing.

  On the other hand, as shown in FIG. 1, the height of the housing 1, that is, the length of the housing 1 in the direction in which the through hole 2 extends, is the length of the insertion member 20 in the direction in which the through hole 2 extends. As shown in FIGS. 3, 5 and 6, the inner peripheral surface of the lower portion 10 of the housing 1 and the lower end surface of the insertion member 20 are longer than (that is, the length of the insertion member 20 in the insertion direction indicated by the arrow X). 21 forms a recess 8.

  Therefore, as shown in FIG. 6, when the concave portion 8 is directed downward, the water droplet W attached to the outer peripheral surface of the housing 1 hardly rises against gravity along the inner surface of the concave portion 8. Therefore, the presence of the recess 8 allows the water droplet W to be dropped more reliably without entering the inside of the housing 1.

  In the bushing having the above-described configuration, as shown by an arrow X in FIG. 1, the lead wires 30, 5, 5, which are examples of the first holding portion on the inner surface of the through hole 2 of the housing 1, The insertion member 20 is guided while the grooves 25, 25, 25 having a substantially arc-shaped cross section as an example of the second holding portion of the insertion member 20 are guided to the lead wires 30, 30, 30 in a state where the 30, 30 is held or mounted. Is inserted into the through hole 2 of the housing 1, the engaging convex portion 26 of the inserting member 20 is engaged with the engaging hole 6 of the housing 1, and the inserting member 20 is assembled to the housing 1.

  At this time, since the housing 1 and the insertion member 20 are made of resin, the frictional resistance due to the insulating coating film of the lead wires 30 of the grooves 25, 25, 25 having a substantially arc-shaped cross section of the insertion member 20 is not excessively large. The insertion member 20 can be assembled smoothly into the through hole 2 of the housing 1.

  If the housing and the insertion member are made of rubber, the insertion member may not be easily inserted into the housing due to the elasticity of rubber and the frictional resistance against the lead wire.

  Further, since the insertion member 20 and the housing 1 are integrated by the engagement of the engagement convex portion 26 and the engagement hole 6, the insertion member 20 protrudes below the housing 1 or falls downward. There is nothing to do.

  The lead wires 30, 30, 30 are held by the inner surface of the through hole 2 of the housing 1 and the outer surface of the insertion member 20 inserted into the through hole 2, so that there is no seam around the outer periphery of the housing 1. Therefore, it is possible to prevent water droplets or the like adhering to the outer peripheral surface of the housing 1 from entering the housing 1.

  Therefore, water can be prevented from entering the motor using the bushing.

  Moreover, since the said 1st holding | maintenance part and the 2nd holding | maintenance part are the curved recessed parts which are the groove | channels 5, 5, 5; It can be securely gripped without a gap.

  In particular, in the first embodiment, the grooves 5, 5, and 5 having a substantially arcuate cross section as an example of a curved recess as the first holding portion on the inner surface of the housing 1, and the second outer surface of the insertion member 20 are provided. The grooves 25, 25, 25, which are examples of curved concave portions as the holding portions, hold the three lead wires 30, 30, 30 facing each other, so that the three leads The wires 30, 30, 30 can be gripped very reliably without gaps.

  Moreover, the grooves 5, 5, and 5 having a substantially arc-shaped cross section and the grooves 25, 25, and 25 having a substantially arc-shaped cross section are accommodated in the housing 1 having no joints on the outer periphery and exposed to the outside. Since there is no water, it is difficult for water to enter these places.

  Furthermore, as shown in FIGS. 2, 3, 5, and 6, the lower end 10 side end surface of the housing 1 is a convex portion 11 that bulges downward. The water descending along the outer surface of the housing 1 can be guided downward and dropped from the housing 1 so as not to enter the housing. More specifically, as shown in FIG. 6, the water droplet W falling along the outer peripheral surface of the housing 1 is caused to bulge by the portion 11 a on the outer peripheral surface side of the housing 1 of the convex portion 11 bulging downward. The portion 11b on the inner peripheral surface of the housing 1 of the convex portion 11 bulging downward is separated from the housing 11 from the tip 11c and dropped from the tip 11c. Therefore, ascending along the portion 11 b on the inner peripheral surface side resists gravity, and the water droplets W hardly enter the housing 1.

  Therefore, it is possible to reliably prevent water droplets from entering the housing 1 by the convex portion 11 bulging downward.

  Further, since the bulged convex portion 11 is continuously connected to the entire lower end surface of the housing 1 in an annular manner and surrounds the entire lead wires 30, 30, 30, the water that descends along the outer surface of the housing 1 is allowed to flow. The water droplet W can be guided and dropped from the housing 1 while reliably preventing the inside of the housing 1 from entering.

  Further, the height of the housing 1, that is, the length of the housing 1 in the direction in which the through hole 2 extends is longer than the length in the direction in which the through hole 2 of the insertion member 20 extends. As shown in FIGS. 5 and 6, since the recess 8 is formed by the inner peripheral surface of the lower portion 10 of the housing 1 and the lower end surface 21 of the insertion member 20, the recess 8 faces downward as shown in FIG. Then, the water droplets W attached to the outer peripheral surface of the housing 1 hardly rises against the gravity along the inner surface of the recess 8. Therefore, the presence of the recess 8 allows the water droplet W to be dropped more reliably without entering the inside of the housing 1.

  2 and 3, between the upper portions 5a, 5a, 5a of the substantially arc-shaped grooves 5, 5, 5 on the inner surface of the housing 1 and the lower portions 5b, 5b, 5b. As shown in FIG. 3, the depth of the provided recess 17 has a depth larger than the depth of the substantially arc-shaped grooves 5, 5, 5, and the inner surface of the recess 17 has lead wires 30, 30, 30 and between the upper portions 25a, 25a, 25a and the lower portions 25b, 25b, 25b of the grooves 25, 25, 25 having a substantially arc-shaped cross section on the outer surface of the insertion member 20. As shown in FIG. 3, the depth of the provided recess 27 is greater than the depth of the substantially arc-shaped grooves 25, 25, 25, and the inner surface of the recess 27 has lead wires 30, 30, 30 is not touched. Therefore, the recesses 17 and 27 form a gap 37 for cutting edges, and even if water is transmitted through the lead wires 30, 30, 30, the water is blocked by the gap 37 for cutting edges. Thus, water can be prevented from entering the inside.

(Second Embodiment)
7 is an exploded perspective view of the bushing according to the second embodiment of the present invention, FIG. 8 is a perspective view of the bushing according to the second embodiment, FIG. 9 is a sectional view of the housing of the bushing, and FIG. It is a front view of the insertion member of the said bushing.

  7 to 10, the same components as those of the first embodiment shown in FIGS. 1 to 6 are designated by the same reference numerals as those of the components shown in FIGS. The detailed description about is omitted, and different components will be described below.

  7, 9, and 10, the extension direction of the lead wire 30, that is, the extension direction of the grooves 5, 5, 5 having a substantially arc-shaped cross section and the grooves 25, 25, 25 having a substantially arc-shaped cross section, The insertion member 50 has the same length.

  As shown in FIGS. 9 and 10, the inner surface of the lower portion of the housing 40 is continuous with the grooves 5, 5, 5 having a substantially arc-shaped cross section, and has a deeper depth than the grooves 5, 5, 5 having a substantially arc shape. The individual recesses 47, 47, 47 are formed, and the outer surface of the lower part of the insertion member 50 is continuous with the grooves 25, 25, 25 having a substantially arc-shaped cross section. Individual recesses 57, 57, 57 having a deep depth are formed. These individual recesses 47, 47, 47 and the individual recesses 57, 57, 57 are opposed to each other to form individual recesses 68, 68, 68 shown in FIG. 8 and around the lead wires 30, 30, 30. A gap for blocking is formed.

  As a result, water drops dripping along the outer surface of the housing 40 are not transmitted to the lead wires 30, 30, 30, and the water drops can be prevented from entering the inside.

  In the bushing of the second embodiment, the protruding portion 11 bulging downward provided in the bushing of the first embodiment is not provided, but it is more desirable to provide the protruding portion 11 protruding below. Needless to say.

(Third embodiment)
FIG. 11 is a front view of the insertion members 61 and 62 which are the main parts of the bushing according to the third embodiment of the present invention. The bushing of the third embodiment is different from the bushing of the first embodiment only in the configuration of the insertion members 61 and 62. Therefore, in FIG. 11, the same components as those of the insertion member 20 of the first embodiment shown in FIG. 4 are denoted by the same reference numerals as those of the components shown in FIG. Are omitted, and different components will be described below. In addition, the housing 1 shown in FIG. 1 of 1st Embodiment is used.

  The bushing of this 3rd Embodiment contains the two insertion members 61 and 62, as shown in FIG. The insertion members 61 and 62 are inserted side by side in the through hole 2 of the housing 1 shown in FIG.

  At this time, the insertion member 61 is inserted into the through hole 2 while fitting the grooves 25, 25 having two substantially arc-shaped cross sections into the lead wires 30, 30 shown in FIG. The arc-shaped groove 25 is inserted into the through hole 2 while being fitted to the lead wire 30 shown in FIG.

  As described above, since a plurality of the insertion members 61 and 62 are provided, the frictional resistance at the time of insertion of each of the insertion members 61 and 62 and the lead wires 30, 30; It becomes easy to insert into the through hole 2.

  If all the lead wires are held by the outer surface of one insertion member and the inner surface of the through hole of the housing, and the one insertion member is inserted into the through hole of the housing, the number of the insertion members is large. It may be difficult to insert into the through hole due to frictional resistance with the outer surface of the lead wire.

(Fourth embodiment)
FIG. 12 is a sectional view of a bushing according to a fourth embodiment of the present invention.

  The bushing shown in FIG. 12 is composed of a cylindrical body 70 having a seamless outer peripheral surface made of rubber or resin. The lead wire 30 is tightly fitted and penetrated into the through hole 72 of the cylindrical body 70, and the lead wire 30 is provided at the lower end as at least one end of the cylindrical body 70 in the direction in which the lead wire 30 penetrates. The convex part 11 which continues in a ring shape and bulges downward is provided so as to surround.

  By the convex part 11 bulging downward in a continuous ring shape below this continuous line, water drops dripping along the outer surface of the cylinder 70 are guided and dropped without entering the inner surface of the cylinder 70. Is the same as the operation of the convex portion 11 bulging downward in the first embodiment. The detailed operation of the convex portion 11 bulging downward is exactly the same as the description of the convex portion 11 bulging downward in the first embodiment. Omitted.

  In addition, a gap 78 is provided between the inner peripheral surface of the lower portion of the cylindrical body 70 and the lead wire 30 so that water droplets can flow along the outer surface of the lead wire 30 or the inner peripheral surface of the lower portion of the cylindrical body 70. I try not to rise.

  In addition, in this 4th Embodiment, although the convex part 11 bulged below was provided in the lower end of the cylinder 70, you may provide also in an upper end.

(Fifth embodiment)
FIG. 13 is a sectional view of a motor according to a fifth embodiment of the present invention.

  The motor according to the fifth embodiment includes a main body 80 made of mold resin, a stator 81 made of a laminated iron core, a coil 82 wound around the stator 81, a shaft 83, and a laminated iron core fixed to the shaft 83. To a rotor 85, a magnet 86 embedded in the rotor 85, and a bushing 100.

  This bushing 100 is the bushing according to any one of the first to fourth embodiments. The stator 81 and the bushing 100 and the main body 80 made of mold resin are integrated by molding, and a part 100 a of the bushing 100 protrudes downward from the main body 80.

  Reference numerals 91 and 92 denote bearings for rotatably supporting the shaft 83, 93 denotes a bracket, and 95 denotes a substrate electrically connected to the lead wire 30.

  According to the motor having the above-described configuration, since the above-described bushing 100 is used, even if a part 100a of the bushing 100 protrudes or is exposed downward from the main body 80, water such as rain causes the bushing 100 and the lead wire 30 to pass through. It does not penetrate into the motor.

  Since the housing 1, 40 or the cylinder 70 (see the first to fourth embodiments) without a joint around the outer periphery of the bushing 100 and the resin body 80 are molded and integrated, the motor Water can be prevented from entering the inside, and a rubber waterproofing member as in the conventional example can be dispensed with, and the cost can be reduced.

  In the fifth embodiment, a part 100a of the bushing 100 protrudes downward from the main body 80 made of mold resin, but may protrude laterally. Further, the bushing 100 does not protrude from the main body 80 made of the mold resin, and may simply be exposed.

  Further, the motor body is not limited to the mold resin, and any material may be used.

  Of course, the constituent elements described in the first to fifth embodiments and modifications may be combined as appropriate, and may be selected, replaced, or deleted as appropriate.

DESCRIPTION OF SYMBOLS 1,40 Housing 2 Through-hole 5 1st holding | maintenance part 8 Recess 11 Protrusion 17, 27 Recess 20, 50, 61, 62 Insertion member 25 2nd holding part 30 Lead wire 68 Individual recessed part 70 Cylindrical body 80 Resin 81 Stator 85 Rotor 100 Bushing

Claims (15)

A housing (1, 40) having a seamless outer perimeter and having a through hole (2);
An insertion member (20, 50, 61, 62) to be inserted into the through hole (2) of the housing (1, 40),
The inner surface of the through hole (2) of the housing (1, 40) and the outer surface of the insertion member (20, 50) are configured to hold the lead wire (30). A characteristic bushing. The bushing according to claim 1, wherein
On the inner surface of the through hole (2) of the housing (1, 40), there is a first holding part (5) for holding the lead wire (30),
A second holding portion (25) for holding the lead wire (30) on the outer surface of the insertion member (20, 50, 61, 62);
The bushing characterized in that the first holding part (5) and the second holding part (25) are capable of holding the lead wire (30) facing each other. The bushing according to claim 2, wherein
The bushing, wherein the first holding part (5) and the second holding part (25) are curved concave parts. In the bushing as described in any one of Claim 1 to 3,
The bushing characterized in that at least one end of the housing (1) in the penetrating direction of the through hole (2) has a bulging convex portion (11). The bushing according to claim 4, wherein
The bushing characterized in that the bulged convex part (11) is connected in an annular shape so as to surround the lead wire (30). In the bushing as described in any one of Claim 1-5,
The length of the housing (1) in the direction in which the through hole (2) extends is longer than the length of the insertion member (20) in the direction in which the through hole (2) extends, and the housing ( A bushing characterized in that a recess (8) is formed by the inner peripheral surface of the lower part of 1) and the lower end surface of the insertion member (20). In the bushing as described in any one of Claim 1-5,
The bushing is characterized in that the lower part of the housing (40) and the lower part of the insertion member (50) form an individual recess (68) that forms a gap around the lower part of the lead wire (30). . In the bushing as described in any one of Claim 1-7,
The bushing characterized in that the housing (1, 40) and the insertion member (20, 50, 61, 62) are made of resin. In the bushing as described in any one of Claim 1-8,
A bushing comprising a plurality of the insertion members (61, 62). The bushing according to claim 2 or 3,
The lead wire (30) of the second holding part (25) is located between at least two parts of the first holding part (5) in the extending direction of the lead wire (30). Bushing characterized in that it has a recess (17, 27) which is located between at least two parts in the direction to be formed and forms a gap around the lead wire (30). In the bushing as described in any one of Claim 1-10,
The engaging portion (6) provided in the through hole (2) and the engaging portion (26) provided in the insertion member (20, 50, 61, 62) are arranged in the through direction of the through hole (2). Bushing characterized by being engaged.   It is a cylindrical body (70) which has the bulging convex part (11) which continued in the ring shape so that the said lead wire (30) might be enclosed in at least one end of the direction which a lead wire (30) penetrates. A characteristic bushing.   Motor according to claim 1, characterized in that a part of the bushing (100) according to any one of claims 1 to 12 projects or is exposed from the body (80). A body (80) made of resin;
A stator (81);
A rotor (85);
A bushing (100) according to any one of claims 1 to 12,
The motor according to claim 1, wherein the stator (81) and the bushing (100) are integrated with a molded body (80) made of the resin. The motor according to claim 13 or 14,
The motor according to claim 1, wherein the bushing (100) protrudes or is exposed from the main body (80) facing downward.

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