CN218482736U

CN218482736U - Micromotor lead-out wire assembly with high sealing performance

Info

Publication number: CN218482736U
Application number: CN202222849888.9U
Authority: CN
Inventors: 朱琨; 朱睿峰
Original assignee: Shenzhen Duohui Motor Co ltd
Current assignee: Shenzhen Duohui Motor Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-02-14
Anticipated expiration: 2032-10-25

Abstract

The application belongs to the technical field of micromotors, and relates to a micromotor lead-out wire assembly with high sealing performance, which comprises an end cover arranged on a motor shell and a sealing shell covering the end cover, wherein a sealing cavity is formed between the sealing shell and the end cover, a preformed hole for a lead-out wire body to pass through is reserved on the end cover, and a sealing hole for the lead-out wire body to pass through the sealing cavity is reserved on the sealing shell; a sealing structure is arranged between the sealing hole and the lead-out wire body; the sealing structure comprises a metal locking block attached to the sealing hole, a rubber ring embedded into the inner annular wall of the metal locking block and tightly propped against the inner wall of the sealing hole, and a rubber sealing ring sleeved on the leading-out wire body, wherein the rubber sealing ring is connected with the metal locking block in a sealing manner; the sealing structure also comprises a gland connected with the metal locking block, and a clamping and fixing component is arranged between the gland and the sealing shell so that the gland provides thrust for the metal locking block to abut against the inner wall of the sealing hole; and a sealing element is arranged between the sealing shell and the end cover. The application has the effect of improving the safety and stability of the micromotor.

Description

Micromotor lead-out wire assembly with high sealing performance

Technical Field

The application relates to the field of micromotors, in particular to a micromotor lead-out wire assembly with high sealing performance.

Background

The micromotor, which is called a "micromotor" throughout, refers to a motor with a diameter less than 160mm or a rated power less than 750w, and is commonly used as a power source of a moving mechanical load, a driving element in sound equipment, office automation equipment and industrial automation equipment in driving occasions without special control requirements. The outgoing line is a power line which penetrates out of a motor shell of the micro motor and is a key structure of the micro motor.

At present, the outlet position of the outgoing line is usually arranged on the circumferential side of the motor shell or the end cover of the motor shell, and the outgoing line penetrates through the motor shell to play a role of sealing through sealant. In the process of motor turnover, if the leading-out wire of the micromotor is pulled or twisted, the hidden trouble of sealant cracking is caused; meanwhile, the sealant is easy to age and crack, so that the waterproof effect is affected, the water is easy to enter the motor, and the motor is damaged.

SUMMERY OF THE UTILITY MODEL

In order to improve the leakproofness at the lead-out wire position of micromotor and improve micromotor's security and stability, this application provides the micromotor lead-out wire subassembly of high leakproofness.

The application provides a little motor lead-out wire subassembly of high leakproofness adopts following technical scheme:

the high-sealing micromotor lead-out wire assembly comprises an end cover arranged on a motor shell and a sealing shell covered on the end cover, wherein a sealing cavity is formed between the sealing shell and the end cover, a preformed hole for a lead-out wire body to pass through is reserved on the end cover, and a sealing hole for the lead-out wire body to pass through the sealing cavity is reserved on the sealing shell; a sealing structure is arranged between the sealing hole and the lead-out wire body; the sealing structure comprises a metal locking block attached to the sealing hole, a rubber ring embedded in the inner annular wall of the metal locking block and tightly abutted against the inner wall of the sealing hole, and a rubber sealing ring sleeved on the lead-out wire body, wherein the rubber sealing ring is hermetically connected with the metal locking block; the sealing structure also comprises a gland connected with the metal locking block, and a clamping component is arranged between the gland and the sealing shell so as to fix the gland and provide thrust for the metal locking block to tightly abut against the inner wall of the sealing hole; and a sealing element is arranged between the sealing shell and the end cover.

By adopting the technical scheme, the lead-out wire body penetrates out of the micro motor and then sequentially passes through the preformed hole, the sealing cavity and the sealing hole, the metal locking block is in an opening state before the sealing structure is installed, the rubber sealing ring deforms under the thrust action of the gland after the metal locking block is installed in the micro motor, and the metal locking block deforms under the stress action of the rubber sealing ring and the sealing hole, so that the rubber ring is pushed to be tightly attached to the inner ring wall of the sealing hole, and the sealing hole is sealed; meanwhile, the sealing element has a sealing effect on the end cover and the sealing cover, so that the lead-out wire body is protected in the sealing structure, and the sealing performance of the connection part of the lead-out wire assembly and the micro motor is ensured.

Optionally, one side of the metal locking block, which is close to the inner wall of the sealing hole, is provided with a plurality of helical teeth which are arranged at intervals along the outgoing direction of the outgoing line body, the helical teeth are arranged in a manner of inclining towards the outgoing line body from the inner annular wall of the sealing hole, and the high end faces one side close to the outgoing line body.

Through adopting above-mentioned technical scheme, when the metal latch segment warp, the inner ring wall of skewed tooth atress interlock sealed hole plays the effect of preventing pulling out, has effectively slowed down and has dragged or wrench movement and lead to the not hard up of extraction position of lead-out wire at motor turnover in-process, has further guaranteed leakproofness and security performance.

Optionally, the helical teeth are arranged in a plurality of groups at intervals along the circumferential direction of the sealing hole.

Through adopting above-mentioned technical scheme, the area of contact of metal latch segment and sealed hole can be increased to a plurality of groups skewed tooth to further increase the interlock nature of metal latch segment and sealed hole.

Optionally, a yielding groove for embedding the rubber ring is formed in the metal locking block, the depth direction of the yielding groove is consistent with the inclination direction of the helical teeth, the rubber ring comprises a sealing lip stretching into the yielding groove, and a gap for deformation of the sealing lip is reserved between the sealing lip and the yielding groove along the axial direction.

Through adopting above-mentioned technical scheme, when the lead-out wire integument was dragged, the seal lip of rubber circle took place to warp in the groove of stepping down to remain throughout and closely laminating with metal latch segment and sealed hole, thereby promote the leakproofness at micromotor's lead-out wire position under the operating condition.

Optionally, the sealing shell is provided with oppositely arranged clamping strips, and the clamping component comprises a clamping hole formed between the two clamping strips and a clamping block engaged with the clamping hole and connected with the gland.

Through adopting above-mentioned technical scheme, the cooperation in card strip and card hole has easy and simple to handle, and the card is solid firm to and installation and maintenance are convenient advantage.

Optionally, the end cap and the sealing cover are fixed by screw threads.

Through adopting above-mentioned technical scheme, can be with sealed lid fixed mounting on the end cover through revolving to twist sealed lid, easy and simple to handle connects the steadiness height.

Optionally, the sealing element includes a sealing ring sleeved on the periphery of the end cap and clamped and embedded in the inner annular wall of the sealing shell.

Through adopting above-mentioned technical scheme, the sealing washer is all closely laminated with end cover and sealed shell, effectively plays sealed effect, and the cost of manufacture is lower.

Optionally, a water absorbing layer is laid on the inner wall of the sealed cavity.

Through adopting above-mentioned technical scheme, when there is moisture in the sealed intracavity, thereby the layer that absorbs water can adsorb moisture and play the effect in dry sealed chamber.

To sum up, the application comprises the following beneficial technical effects:

1. by arranging the sealing structure, the sealing function is realized by utilizing the gland, the metal locking block, the rubber ring and the rubber sealing ring, so that the sealing performance of the connection part of the outgoing line assembly and the motor shell of the micromotor is ensured, and the safety and the stability of the micromotor are improved;

2. through setting up the skewed tooth and having the rubber circle of seal lip, utilize the deformation of seal lip and skewed tooth for the rubber circle remains throughout with the inseparable laminating in sealed hole, avoids micromotor to produce vibration or is dragged by the lead-out wire in service and makes the junction of lead-out wire and micromotor produce not hard up, has further promoted the sealing performance at lead-out wire position.

Drawings

FIG. 1 is a schematic diagram of an application of an embodiment of the present application installed in a micro-machine.

Fig. 2 is a partial sectional view showing the internal structure of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an exploded view of the present application along the length of the lead body.

Description of the reference numerals: 1. a motor casing; 11. leading out a wire body; 2. an end cap; 21. reserving a hole; 22. a seal ring; 3. sealing the shell; 31. sealing the hole; 32. an annular groove; 33. sealing the cavity; 4. a metal locking block; 41. helical teeth; 42. a yielding groove; 5. a rubber ring; 51. a sealing lip; 6. a rubber seal ring; 61. an end edge; 7. a gland; 71. a clamping block; 8. a water-absorbing layer.

Detailed Description

The embodiment of the application discloses a micromotor lead-out wire assembly with high sealing performance, and with reference to fig. 1, the micromotor lead-out wire assembly comprises an end cover 2 mounted on a motor shell 1 and a sealing shell 3 covering the end cover 2, and with reference to fig. 2, a sealing cavity 33 is formed between the sealing shell 3 and the end cover 2, and a lead-out wire body 11 penetrates out of the motor shell 1 and transversely penetrates out of the sealing cavity 33; a sealing structure is arranged between the sealing shell 3 and the lead-out wire body 11, and a sealing element is arranged between the sealing shell 3 and the end cover 2.

Referring to fig. 2, the end cap 2 is shaped like a circular plate, and is attached to an end of the motor case 1 and fixed to the motor case 1 by bolts, as shown in fig. 1. One side of the end cover 2 departing from the motor casing 1 protrudes to form a convex strip. A prepared hole 21 is penetrated through the center of the end cap 2. Referring to fig. 3, a sealing case 3 is installed at one side of the end cap 2 facing away from the motor case 1. The sealing shell 3 is covered on the convex strip of the end cover 2 and is in threaded connection with the end cover 2. A sealing element is arranged between the joint of the end cover 2 and the sealing shell 3. In this embodiment, the sealing element is a sealing ring 22, and the sealing ring 22 is sleeved on the protruding strip of the end cap 2 and is embedded in the end face of the sealing shell 3, so as to seal between the sealing shell 3 and the end cap 2.

Referring to fig. 2, a sealing chamber 33 is formed between the end cap 2 and the inner wall of the sealing case 3. The sealing shell 3 has a sealing hole 31 penetrating along the outgoing direction of the outgoing line body 11, so that the outgoing line body 11 can penetrate through the sealing shell 3.

A sealing structure is provided between the sealing hole 31 and the lead wire body 11. The sealing structure comprises a rubber sealing ring 6 and a metal locking block 4 which are sequentially sleeved on the periphery of the lead-out wire body 11 from inside to outside. Referring to fig. 3, two ends of the rubber sealing ring 6 extend along the radial direction to form end edges 61, and the end edge 61 on the side far away from the sealing cavity 33 is embedded in the metal locking block 4 to play a role in sealing the metal locking block 4 and the lead-out wire body 11. The rubber sealing ring 6 and the slow-down locking block can be connected into a whole by adopting a pouring integrated structure or a vulcanization process so as to enable the rubber sealing ring 6 to be connected with the metal locking block 4 in a sealing manner.

Referring to fig. 4, the metal locking block 4 is in a sleeve shape, and one side of the metal locking block close to the inner wall of the sealing hole 31 extends outwards to form a plurality of helical teeth 41 arranged at intervals along the appearance direction of the lead-out wire body 11. Referring to fig. 3, the helical teeth 41 are disposed obliquely from the inner annular wall of the sealing hole 31 to the lead-out wire body 11, and the high end faces to a side close to the lead-out wire body 11, so that the helical teeth 41 are disposed in an everted structure. The side of the helical tooth 41 facing away from the metal locking block 4 abuts against the inner wall of the sealing hole 31. The helical teeth 41 are arranged in several groups at intervals along the circumference of the seal hole 31.

Referring to fig. 3, the sealing structure further includes a rubber ring 5 between the metal locking block 4 and the sealing hole 31. The rubber ring 5 is embedded in the outer ring wall of the metal locking block 4, and the inner side and the outer side respectively support against the metal locking block 4 and the sealing hole 31. The outer ring wall of the metal locking block 4 is provided with a yielding groove 42 for the rubber ring 5 to be embedded in, and the depth direction of the yielding groove 42 is consistent with the inclined direction of the inclined teeth 41. One side of the rubber ring 5 close to the metal locking block 4 extends outwards to form a sealing lip 51. The rubber ring 5 abuts against the inner wall of the relief groove 42 via the end of the seal lip 51, and a space for deforming the seal lip 51 is left between the seal lip 51 and the relief groove 42 in the axial direction.

The seal arrangement further comprises a gland 7 located in the seal cavity 33 adjacent the seal bore 31. The gland 7 is provided with a abdicating hole for the lead-out wire body 11 to pass through, and the gland 7 is fixedly connected with the metal locking block 4.

Referring to fig. 3, an annular groove 32 is formed on the inner wall of the sealing case 3 near the sealing hole 31. The annular groove 32 is fixed with oppositely arranged clamping strips. The opposite surfaces of the two clamping strips are both concave inwards to form an arc-shaped groove, and a gap is reserved between one side of each clamping strip, which is far away from the arc-shaped groove, and the annular groove 32. A clamping component is arranged between the gland 7 of the clamping strip and the sealing shell 3. The clamping and fixing component comprises a clamping hole formed between the arc-shaped grooves of the two clamping strips and a clamping block 71 which is in clamping fit with the clamping hole and is fixedly connected with the gland 7. When the clamping block 71 is embedded into the clamping hole, the gland 7 is buckled in the sealing shell 3, and meanwhile, the helical teeth 41 of the metal locking block 4 are pushed to tightly abut against the inner wall of the sealing hole 31, so that the rubber ring 5 is deformed, and the rubber ring 5 is tightly attached to the metal locking block 4 and the sealing hole 31. Referring back to fig. 2, the inner wall of the sealed chamber 33 is provided with a water-absorbing layer 8. The water absorbing layer 8 can be made of sponge strip or washing cotton material and is adhered with the inner wall of the sealed cavity 33.

The implementation principle of the micromotor lead-out wire assembly with high sealing performance of the embodiment of the application is as follows: referring to fig. 1, the lead-out wire body 11 is led out of the motor casing 1, and with reference to fig. 2, passes through the prepared hole 21 of the end cover 2, the sealing cavity 33 and the sealing hole 31 of the sealing casing 3 in sequence, and is led out of the sealing casing 3; install sealed shell 3 screw thread on end cover 2, sealing washer 22 plays sealed end cover 2 and sealed shell 3's effect, inlay card block 71 card as the card is downthehole, thereby install gland 7 lock on sealed shell 3, under gland 7's thrust effect, rubber seal ring 6 takes place to warp, simultaneously under the atress effect of rubber seal ring 6 and sealed hole 31, metal latch segment 4 warp, thereby promote the sealed lip 51 of rubber circle 5 and closely laminate with metal latch segment 4, simultaneously rubber circle 5 and the closely laminate of the interior rampart of sealed hole 31, thereby play the effect of sealed hole 31.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The high-sealing-performance micromotor lead-out wire assembly comprises an end cover (2) arranged on a motor shell (1) and a sealing shell (3) covered on the end cover (2), wherein a sealing cavity (33) is formed between the sealing shell (3) and the end cover (2), a preformed hole (21) for a lead-out wire body (11) to pass through is reserved on the end cover (2), and a sealing hole (31) for the lead-out wire body (11) to pass through the sealing cavity (33) is reserved on the sealing shell (3); the method is characterized in that: a sealing structure is arranged between the sealing hole (31) and the lead-out wire body (11);

the sealing structure comprises a metal locking block (4) attached to the sealing hole (31), a rubber ring (5) embedded into the inner annular wall of the metal locking block (4) and abutted against the inner wall of the sealing hole (31), and a rubber sealing ring (6) sleeved on the lead-out wire body (11), wherein the rubber sealing ring (6) is in sealing connection with the metal locking block (4); the sealing structure further comprises a gland (7) connected with the metal locking block (4), and a clamping component is arranged between the gland (7) and the sealing shell (3) to fix the gland (7) and provide thrust for the metal locking block (4) to abut against the inner wall of the sealing hole (31); and a sealing element is arranged between the sealing shell (3) and the end cover (2).

2. The high hermeticity micromotor lead out wire assembly of claim 1, wherein: one side, close to the inner wall of the sealing hole (31), of the metal locking block (4) is provided with a plurality of helical teeth (41) which are distributed at intervals along the outgoing line direction of the lead-out line body (11), the helical teeth (41) are obliquely arranged from the inner annular wall of the sealing hole (31) to the lead-out line body (11), and the high end of the helical teeth faces one side close to the lead-out line body (11).

3. The high hermeticity micromotor lead out wire assembly of claim 2, wherein: the helical teeth (41) are arranged in a plurality of groups at intervals along the circumferential direction of the sealing hole (31).

4. The high hermeticity micromotor lead out wire assembly of claim 2, wherein: offer the groove of stepping down (42) that supplies rubber circle (5) embedding on metal latch segment (4), the groove of stepping down (42) direction of depth is unanimous with the incline direction of skewed tooth (41), and rubber circle (5) are including stretching into the inside seal lip (51) of groove of stepping down (42), and seal lip (51) are followed the axial and are left the space that supplies seal lip (51) to warp between groove of stepping down (42).

5. The high hermeticity micromotor lead out wire assembly of claim 1, wherein: the sealing shell (3) is internally provided with oppositely arranged clamping strips, and the clamping and fixing component comprises a clamping hole formed between the two clamping strips and a clamping block (71) which is in clamping fit with the clamping hole and is connected with the gland (7).

6. The high hermeticity micromotor lead out wire assembly of claim 1, wherein: the end cover (2) and the sealing cover are fixed by screw threads.

7. The high hermeticity micro-machine lead out wire assembly of claim 6, wherein: the sealing element comprises a sealing ring (22) which is sleeved on the periphery of the end cover (2) and is embedded in the inner annular wall of the sealing shell (3).

8. The high hermeticity micromotor lead out wire assembly of claim 1, wherein: and a water absorption layer (8) is laid on the inner wall of the sealed cavity (33).