NZ707766B - Waterproof Sealing Structure for Motor Outgoing Lines - Google Patents

Abstract

The present invention discloses a waterproof sealing structure for motor outgoing lines, comprising an end cover and a first outgoing line and a second outgoing line extracted from the inside of a motor. Each of the first outgoing line and the second outgoing line is composed of an external insulating layer and an internal lead, and the first outgoing line and the second outgoing line extend to the outside of the motor from an outgoing line hole formed on the end cover after passing through an encapsulating chamber from the inside of the motor, respectively; a section of the first outgoing line corresponding to the encapsulating chamber has a first skinless section, and a section of the second outgoing line corresponding to the encapsulating chamber has a second skinless section; and, the first skinless section and the second skinless section are peeled off the external insulating layers to expose the internal leads, and the first skinless section and the second skinless section are sealed within the encapsulating chamber by an encapsulating sealant. The first outgoing line and the second outgoing line extend within the end cover respectively in a counter-clockwise and a clockwise direction and intersect at the outgoing line hole formed on the end cover, and the first skinless section is located on the counter-clockwise extended first outgoing line and the second skinless section is located on the clockwise extended second outgoing line. The counter clockwise and clockwise orientation of the first and second outgoing lines decreases the risk of the first skinless section and second skinless section touching one another. Further, present invention provides a waterproof sealing structure for motor outgoing lines, which can effectively prevent water from entering the inside of a motor and has a good waterproof effect. ng layer and an internal lead, and the first outgoing line and the second outgoing line extend to the outside of the motor from an outgoing line hole formed on the end cover after passing through an encapsulating chamber from the inside of the motor, respectively; a section of the first outgoing line corresponding to the encapsulating chamber has a first skinless section, and a section of the second outgoing line corresponding to the encapsulating chamber has a second skinless section; and, the first skinless section and the second skinless section are peeled off the external insulating layers to expose the internal leads, and the first skinless section and the second skinless section are sealed within the encapsulating chamber by an encapsulating sealant. The first outgoing line and the second outgoing line extend within the end cover respectively in a counter-clockwise and a clockwise direction and intersect at the outgoing line hole formed on the end cover, and the first skinless section is located on the counter-clockwise extended first outgoing line and the second skinless section is located on the clockwise extended second outgoing line. The counter clockwise and clockwise orientation of the first and second outgoing lines decreases the risk of the first skinless section and second skinless section touching one another. Further, present invention provides a waterproof sealing structure for motor outgoing lines, which can effectively prevent water from entering the inside of a motor and has a good waterproof effect.

Description

Description Waterproof Sealing Structure for Motor Outgoing Lines Technical Field of the Invention The present invention relates to the field of motors, in particular to a waterproof sealing structure for motor outgoing lines.

Background of the Invention For motors working in moist or outdoor, such as water pump motors or submersible pump motors, etc., to prevent water from permeating into motors from gaps between motor outgoing lines and mounting holes to dampen the inside of motors and result in the short-circuit burning of motors, an existing motor waterproof structure mainly provides a sealing ring between a motor outgoing line and an mounting hole. However, such a motor waterproof structure is still likely to allow water to enter the inside of motors. In other words, when the insulating layer of an outgoing line external to a motor is damaged, water is likely to enter the inside of the motor from the damaged part of the outgoing line along a gap between the insulating layer of the outgoing line and a conductive layer, thereby resulting in a short-circuit of the motor and thus causing potential safety hazards.

Summary of the Invention To overcome the deficiencies of the prior art, the present invention is to provide a waterproof sealing structure for motor outgoing lines, which can effectively prevent water from entering the inside of a motor and has a good waterproof effect.

To achieve the above purpose, the present invention employs the following technical solutions.

The present invention provides a waterproof sealing structure for motor outgoing lines, including an end cover and a first outgoing line and a second outgoing line extracted from the inside of a motor, characterized in that the end cover is provided with an encapsulating chamber; each of the first outgoing line and the second outgoing line is composed of an external insulating layer and an internal lead, and the first outgoing line and the second outgoing line extend to the outside of the motor from an outgoing line hole formed on the end cover after passing through the encapsulating chamber from the inside of the motor, respectively; a section of the first outgoing line corresponding to the encapsulating chamber has a first skinless section, and a section of the second outgoing line corresponding to the encapsulating chamber has a second skinless section; the first skinless section and the second skinless section are peeled off the external insulating layers to expose the internal leads, and the first skinless section and the second skinless section are sealed within the encapsulating chamber by an encapsulating sealant; and, the external insulating layer of the first outgoing line adjacent to both ends of the first skinless section and the external insulating layer of the second outgoing line adjacent to both ends of the second skinless section are also sealed within the encapsulating chamber by the encapsulating sealant. The first outgoing line and the second outgoing line are provided thereon with a first skinless section and a second skinless section, respectively, and the first skinless section and the second skinless section are sealed within the encapsulating chamber by an encapsulating sealant, so that compact adhesion is formed between the encapsulating sealant and the lead to block the penetration of water molecules, and a passage for the gap between the insulating layer of the outgoing line and the lead to communicate the outside of the motor with the inside of the motor may be effectively blocked; meanwhile, the external insulating layer of the first outgoing line adjacent to both ends of the first skinless section and the external insulating layer of the second outgoing line adjacent to both ends of the second skinless section are also sealed within the encapsulating chamber by the encapsulating sealant, so that a passage for the gap between the insulating layer of the outgoing line and the lead to communicate the outside of the motor with the encapsulating chamber is also blocked. By this waterproof sealing structure provided by the present invention, even if the insulating layer of the motor outgoing lines outside the motor is damaged and water penetrates into the gap between the insulating layer of the outgoing line and the lead from the damaged part, water is unable to pass through the first skinless section or the second skinless section and the encapsulating chamber to enter the inside of the motor, so that the waterproof sealing effect of the motor is greatly improved and accidents such as motor short-circuit are avoided.

Preferably, the first outgoing line and the second outgoing line extend within the end cover and intersect at the outgoing line hole formed on the end cover respectively in a counterclockwise direction and a clockwise direction, and the first skinless section and the second skinless section are sections of the first outgoing line and the second outgoing line not in intersection. As the first skinless section and the second skinless section are sections of the first outgoing line and the second outgoing line not in intersection, the overlap and contact of the first skinless section with the second skinless section are avoided during sealing by the encapsulating sealant, so that the first skinless section and the second skinless section are ensured to be surrounded and sealed within the encapsulating chamber, respectively, the waterproof effect is ensured, and the short-circuit caused by the contact of the first skinless section with the second skinless section is also avoided.

Preferably, the first outgoing line and the second outgoing line are parallel to each other, and the first skinless section and the second skinless section are staggered in a length direction of both the first outgoing line and the second outgoing line. As the first skinless section and the second skinless section are staggered in a length direction of both the first outgoing line and the second outgoing line, the overlap and contact of the first skinless section with the second skinless section are avoided during sealing by the encapsulating sealant, so that the first skinless section and the second skinless section are ensured to be surrounded and sealed within the encapsulating chamber, respectively, the waterproof effect is ensured, and the short-circuit caused by the contact of the first skinless section with the second skinless section is also avoided.

Preferably, the encapsulating chamber is adjacent to the outgoing line hole formed on the end cover, so that the outgoing line hole is encapsulated simultaneously when the first skinless section and the second skinless section are encapsulated, and the waterproof sealing effect of the motor is further improved.

Preferably, the first skinless section and the second skinless section are encapsulated within the encapsulating chamber by epoxy resin. The encapsulating may also be implemented by an organic silicon encapsulating sealant, a polyurethane encapsulating sealant, a silicone sealant or other materials.

Therefore, the present invention has the following beneficial technical effects: the waterproof sealing structure for motor outgoing lines provided by the present invention may effectively prevent water from entering the inside of a motor and has a good waterproof effect.

Brief Description of the Drawings Fig. 1 is a structure diagram of the present invention; and Fig. 2 is a structure diagram of Embodiment 2 of the present invention; in which: 1: First outgoing line; 11: First skinless section; 2: Second outgoing line; 21: Second skinless section; 3: Encapsulating chamber; 31: Epoxy resin; 4: End cover; and 41: Outgoing line hole formed on the end cover.

Detailed Description of the Invention The present invention will be further described as below with reference to the drawings.

Embodiment 1 As shown in Fig. 1, the present invention provides a waterproof sealing structure for motor outgoing lines, including an end cover 4 and a first outgoing line 1 and a second outgoing line 2 extracted from the inside of a motor, the end cover 4 being provided with an encapsulating chamber 3; each of the first outgoing line 1 and the second outgoing line 2 is composed of an external insulating layer and an internal lead, and the first outgoing line 1 and the second outgoing line 2 extend to the outside of the motor from an outgoing line hole 41 formed on the end cover after passing through the encapsulating chamber 3 from the inside of the motor, respectively; a section of the first outgoing line 1 corresponding to the encapsulating chamber 3 has a first skinless section 11, and a section of the second outgoing line 2 corresponding to the encapsulating chamber 3 has a second skinless section 21; the first skinless section 11 and the second skinless section 21 are peeled off the external insulating layers to expose the internal leads, and the first skinless section 11 and the second skinless section 21 are sealed within the encapsulating chamber 3 by an encapsulating sealant; and, the external insulating layer of the first outgoing line 1 adjacent to both ends of the first skinless section 11 and the external insulating layer of the second outgoing line 2 adjacent to both ends of the second skinless section 21 are also sealed within the encapsulating chamber 3 by the encapsulating sealant. The first outgoing line 1 and the second outgoing line 2 are provided thereon with a first skinless section 11 and a second skinless section 21, respectively, and the first skinless section 11 and the second skinless section 21 are sealed within the encapsulating chamber 3 by an encapsulating sealant, compact adhesion is formed between the encapsulating sealant and the lead to block the penetration of water molecules, so that a passage for the gap between the insulating layer of the outgoing line and the lead to communicate the outside of the motor with the inside of the motor may be effectively blocked; meanwhile, the external insulating layer of the first outgoing line 1 adjacent to both ends of the first skinless section 11 and the external insulating layer of the second outgoing line 2 adjacent to both ends of the second skinless section 21 are also sealed within the encapsulating chamber 3 by the encapsulating sealant, so that a passage for the gap between the insulating layer of the outgoing line and the lead to communicate the outside of the motor with the encapsulating chamber is also blocked. By this waterproof sealing structure provided by the present invention, even if the insulating layer of the motor outgoing lines outside the motor is damaged and water penetrates into the gap between the insulating layer of the outgoing line and the lead from the damaged part, water is unable to pass through the first skinless section 11 or the second skinless section 21 and the encapsulating chamber 3 to enter the inside of the motor, so that the waterproof sealing effect of the motor is greatly improved and accidents such as motor short-circuit are avoided.

The first outgoing line 1 and the second outgoing line 2 extend within the end cover 4 and intersect at the outgoing line hole 41 formed on the end cover respectively in a counterclockwise direction and a clockwise direction, and the first skinless section 11 and the second skinless section 21 are sections of the first outgoing line 1 and the second outgoing line 2 not in intersection. As the first skinless section 11 and the second skinless section 21 are sections of the first outgoing line 1 and the second outgoing line 2 not in intersection, the overlap and contact of the first skinless section 11 with the second skinless section 21 are avoided during sealing by the encapsulating sealant, so that the first skinless section 11 and the second skinless section 21 are ensured to be surrounded and sealed within the encapsulating chamber 3, respectively, the waterproof effect is ensured, and on the other hand, the short-circuit caused by the contact of the first skinless section 11 with the second skinless section 21 is also avoided.

The encapsulating chamber 3 is adjacent to the outgoing line hole 41 formed on the end cover, so that the outgoing line hole is encapsulated simultaneously when the first skinless section 11 and the second skinless section 21 are encapsulated, and the waterproof sealing effect of the motor is further improved. The first skinless section 11 and the second skinless section 21 are encapsulated within the encapsulating chamber 3 by epoxy resin 31.

The encapsulating may also be implemented by an organic silicon encapsulating sealant, a polyurethane encapsulating sealant, a silicone sealant or other materials.

Embodiment 2 As shown in Fig. 2, the first outgoing line 1 and the second outgoing line 2 are parallel to each other, and the first skinless section 11 and the second skinless section 21 are staggered in a length direction of both the first outgoing line 1 and the second outgoing line 2. As the first skinless section 11 and the second skinless section 21 are staggered in a length direction of both the first outgoing line 1 and the second outgoing line 2, the overlap and contact of the first skinless section 11 with the second skinless section 21 are avoided during sealing by the encapsulating sealant, so that the first skinless section 11 and the second skinless section 21 are ensured to be surrounded and sealed within the encapsulating chamber 3, respectively, the waterproof effect is ensured, and on the other hand, the short-circuit caused by the contact of the first skinless section 11 with the second skinless section 21 is also avoided.

The remaining is the same as Embodiment 1.

Claims (4)

Claims 1.

1. A waterproof sealing structure for motor outgoing lines, comprising an end cover and a first outgoing line and a second outgoing line extracted from the inside of a motor, characterized in that the end cover is provided with an encapsulating chamber; each of the first outgoing line and the second outgoing line is composed of an external insulating layer and an internal lead, and the first outgoing line and the second outgoing line extend to the outside of the motor from an outgoing line hole formed on the end cover after passing through the encapsulating chamber from the inside of the motor, respectively; a section of the first outgoing line corresponding to the encapsulating chamber has a first skinless section, and a section of the second outgoing line corresponding to the encapsulating chamber has a second skinless section; the first skinless section and the second skinless section are peeled off the external insulating layers to expose the internal leads, and the first skinless section and the second skinless section are sealed within the encapsulating chamber by an encapsulating sealant; and, the external insulating layer of the first outgoing line adjacent to both ends of the first skinless section and the external insulating layer of the second outgoing line adjacent to both ends of the second skinless section are also sealed within the encapsulating chamber by the encapsulating sealant, wherein the first outgoing line and the second outgoing line extend within the end cover respectively in a counterclockwise and a clockwise direction and intersect at the outgoing line hole formed on the end cover, and the first skinless section is located on the counterclockwise extended first outgoing line and the second skinless section is located on the clockwise extended second outgoing line.

2. The waterproof sealing structure for motor outgoing lines according to claim 1, characterized in that the first skinless section and the second skinless section are sections of the counterclockwise extended first outgoing line and the clockwise extended second outgoing line not in intersection.

3. The waterproof sealing structure for motor outgoing lines according to claim 1 or 2, characterized in that the encapsulating chamber is adjacent to the outgoing line hole formed on the end cover.

4. The waterproof sealing structure for motor outgoing lines according to claim 1 or 2, characterized in that the first skinless section and the second skinless section are encapsulated within the encapsulating chamber by epoxy resin.