CN220342017U - Sealing and fixing structure for outgoing line of motor - Google Patents

Abstract

The utility model relates to a low-cost motor, in particular to a motor outgoing line sealing and fixing structure. The utility model provides a motor lead-out wire seal fixed knot constructs, includes motor housing and lead-out wire, be equipped with the through-hole that runs through in order for the lead-out wire to pass through on the motor housing, motor housing has the terminal surface department of through-hole to be formed with the spacing groove, spacing groove and through-hole coaxial and intercommunication, the lead-out wire overcoat is equipped with elastic sealing cover, elastic sealing cover extends in order to be formed with in order to be used for placing the deformation portion in the spacing groove to the circumference outside, the thickness of deformation portion is greater than the degree of depth of spacing groove, can dismantle on the terminal surface and be fixed with the clamp plate, the clamp plate is equipped with the confession the through-hole that elastic sealing cover tip passed, works as deformation portion is restricted when clamp plate terminal surface and spacing groove tank bottom, elastic sealing cover corresponds the part extrusion lead-out wire outer wall contact seal of deformation portion circumference inboard. The utility model has the advantages of being suitable for motors with low cost and good sealing performance.

Description

Sealing and fixing structure for outgoing line of motor

Technical Field

The utility model relates to a low-cost motor, in particular to a motor outgoing line sealing and fixing structure.

Background

The patent with the publication number of CN105743270A discloses a wire outlet sealing structure, a wiring hole is formed in a shell, the wire outlet sealing structure comprises a conducting rod, an outer positioning block, an inner positioning block and a fastener, the inner positioning block and the outer positioning block are made of insulating materials, the outer positioning block is located on the outer side of the shell, the inner positioning block is located on the inner side of the shell, the conducting rod penetrates through the inner positioning block, the wiring hole and the outer positioning block, the conducting rod and the shell are fixedly connected through the fastener, a gap is formed between the conducting rod and the shell, a first sealing ring is arranged between the outer positioning block and the shell, a second sealing ring is arranged between the outer positioning block and the conducting rod, an outgoing wire is connected to the inner end of the conducting rod, potting adhesive is filled in the shell, the outgoing wire connected with the inner end of the conducting rod is fixed in the shell, and the potting adhesive seals the gap between the shell, the inner positioning block, the conducting rod and the outgoing wire.

The scheme discloses a lead-out wire is connected and seal structure to through making lead-out wire and conducting rod welding to carry out the sealing between all spare parts between conducting rod and wiring hole through the mode of encapsulating, although this kind of sealed effect is better, but the structure is complicated, and it is very troublesome when assembling and encapsulating, is not applicable to low-cost motor.

Disclosure of Invention

The utility model aims to provide a motor outgoing line sealing and fixing structure which is suitable for a motor with small cost and has good sealing performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a motor lead-out wire seal fixed knot constructs, includes motor housing and lead-out wire, be equipped with the through-hole that runs through in order for the lead-out wire to pass through on the motor housing, motor housing has the terminal surface department of through-hole to be formed with the spacing groove, spacing groove and through-hole coaxial and intercommunication, the lead-out wire overcoat is equipped with elastic sealing cover, elastic sealing cover extends in order to be formed with in order to be used for placing the deformation portion in the spacing groove to the circumference outside, the thickness of deformation portion is greater than the degree of depth of spacing groove, can dismantle on the terminal surface and be fixed with the clamp plate, the clamp plate is equipped with the confession the through-hole that elastic sealing cover tip passed, works as deformation portion is restricted when clamp plate terminal surface and spacing groove tank bottom, deformation portion is thinned by the pressure, just elastic sealing cover corresponds the part of deformation portion circumference inboard and is extruded in order to offset contact seal with the lead-out wire outer wall.

Besides the motor shell and the lead-out wire, the parts of the embodiment are fewer, and the production cost can be reduced, and the utility model can realize sealing only by sleeving the elastic sealing sleeve and the lead-out wire and assembling the bolt and the pressing plate, thereby being more convenient. The elastic sealing sleeve can adopt nitrile rubber, and the gap between the elastic sealing sleeve and the lead-out wire is smaller, so that the elastic sealing sleeve can be conveniently extruded after the pressing plate is assembled, the elastic sealing sleeve is extruded to the inner side in the circumferential direction, the contact sealing between the elastic sealing sleeve and the lead-out wire is finally realized, the contact sealing grade reaches 5-grade waterproof, and the waterproof is higher than 4-grade waterproof required by the prior art.

Preferably, the end face of the motor housing is provided with at least two fixing holes and is matched with a fixing bolt, the pressing plate is provided with at least two matching holes for the external thread part of the fixing bolt to pass through corresponding to the circumferential outside of the through hole, the at least two matching holes are uniformly arranged at intervals in a ring shape with the axis of the through hole as the center, and the at least two fixing holes are uniformly arranged at intervals in a ring shape with the axis of the through hole as the center. The extrusion deformation of the elastic sealing sleeve can be more uniform through the arrangement, so that the sealing effect is ensured.

Preferably, the deformation portion is provided in a ring shape. The deformation part is annular, so that the extrusion deformation of the elastic sealing sleeve is more uniform, and the sealing effect is ensured.

Preferably, the pressing plate has a contact surface for contacting the deformation portion, the contact surface being formed in a shape of a contour, and the contact surface gradually extending downward from a circumferential inner side to a circumferential outer side. Deformation guiding of the deformation part is realized through the contact surface, so that tight fit between the elastic sealing sleeve and the lead-out wire is ensured.

Preferably, the thickness of the deformation part is 1.2-1.5 times of the depth of the limit groove. The arrangement ensures the sealing between the elastic sealing sleeve and the lead-out wire after the deformation of the deformation part and the convenience in assembling the pressing plate.

The utility model has the advantages of being suitable for motors with low cost and good sealing performance.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of a motor housing according to embodiment 1 of the present utility model.

Fig. 3 is a schematic structural view of the press plate of embodiment 1 of the present utility model before assembly.

Fig. 4 is a schematic structural view of the press plate according to embodiment 1 of the present utility model after assembly.

Fig. 5 is an enlarged view of the elastic sealing sleeve of fig. 4 at the deformed portion.

Fig. 6 is a schematic structural view of a platen according to embodiment 2 of the present utility model.

Detailed Description

The utility model is further described below with reference to the drawings and specific embodiments.

As shown in fig. 1 to 5, this embodiment discloses a motor lead-out wire sealing and fixing structure, including motor housing 1 and lead-out wire 2, the motor housing of this embodiment is the rear end cap, be equipped with the through-hole 11 that runs through for lead-out wire 2 to pass through on the motor housing 1, the terminal surface that motor housing 1 had the through-hole is the plane and is formed with spacing groove 12, spacing groove 12 and through-hole 11 coaxial and intercommunication, spacing groove 12 width is greater than through-hole 11 width, the overcoat of lead-out wire 2 is equipped with elastic seal cover 3, elastic seal cover 3 middle part circumference outside extends in order to be formed with and is used for placing in spacing groove 12 and take the shape of a ring deformation portion 31, deformation portion 31's thickness is greater than the degree of depth of spacing groove 12, be fixed with clamp plate 42 through fixing bolt 41 on the terminal surface, clamp plate 42 is equipped with the through-hole 43 that supplies elastic seal cover 3 tip to pass, when deformation portion 31 is restricted clamp plate 42 lower terminal surface and spacing groove 12 between, deformation portion 31 is pressed down, and the part corresponding to deformation portion 31 circumference inboard is pressed in order to offset with lead-out wire 2 outer wall and form contact seal structure 30. Wherein the outer diameter of the deflection deformation part 31 of the elastic sealing sleeve 3 is smaller than the inner diameter of the through hole 43 of the pressing plate 42.

Wherein, two fixing holes 13 are arranged on the end face of the motor shell 1 and are matched with fixing bolts 41, and the two fixing holes 13 are symmetrically arranged by taking the axis of the through hole 11 as the center; the pressing plate 42 is provided with two fitting holes 44 for passing through the male screw portions of the fixing bolts 41 correspondingly to the circumferential outer sides of the through holes 43, and the two fitting holes 44 are symmetrically arranged centering on the axis of the through holes 43. The thickness of the deformation portion 31 is 1.3 times the depth of the limit groove 12.

The elastic sealing sleeve 3 of the embodiment is made of nitrile rubber with the Shore hardness of 50-60, and the gap between the elastic sealing sleeve 3 and the outgoing line 2 is 0.1-0.3mm.

Example 2

As shown in fig. 6, this embodiment differs from embodiment 1 only in that: the pressing plate 42 has a contact surface 45 for contacting the deformation portion 31, the contact surface 45 is formed in a surrounding shape, and the contact surface 45 gradually extends downward from the inner side to the outer side in the circumferential direction to form a tapered surface.

The utility model has the advantages of being suitable for motors with low cost and good sealing performance.

Claims (5)

1. The utility model provides a motor lead-out wire seal fixed knot constructs, includes motor housing and lead-out wire, be equipped with the through-hole that runs through in order to supply the lead-out wire to pass through on the motor housing, its characterized in that: the motor casing has the terminal surface department of through-hole to be formed with the spacing groove, spacing groove and through-hole coaxial and intercommunication, the lead-out wire overcoat is equipped with the elastic sealing cover, the elastic sealing cover extends in order to be formed with and is used for placing the deformation portion in the spacing groove to the circumference outside, the thickness of deformation portion is greater than the degree of depth of spacing groove, can dismantle on the terminal surface and be fixed with the clamp plate, the clamp plate is equipped with the confession the through-hole that elastic sealing cover tip passed, works as deformation portion is restricted when clamp plate terminal surface and the spacing groove tank bottom, deformation portion is thinned by the pressure, just the part that elastic sealing cover corresponds deformation portion circumference inboard is extruded in order to offset contact seal with the lead-out wire outer wall.

2. The motor lead-out wire sealing and fixing structure according to claim 1, wherein: the motor is characterized in that at least two fixing holes are formed in the end face of the motor shell and are matched with fixing bolts, at least two matching holes for the outer thread parts of the fixing bolts to pass through are formed in the periphery of the pressing plate, corresponding to the through holes, of the pressing plate, the at least two matching holes are uniformly arranged at intervals in a ring shape with the axis of the through holes as the center, and the at least two fixing holes are uniformly arranged at intervals in a ring shape with the axis of the through holes as the center.

3. The motor lead-out wire sealing and fixing structure according to claim 1, wherein: the deformation part is in an annular arrangement.

4. A motor lead-out wire sealing and fixing structure according to claim 3, wherein: the pressing plate is provided with a contact surface for contacting with the deformation part, the contact surface is in a surrounding shape, and the contact surface gradually extends downwards from the inner side to the outer side in the circumferential direction.

5. The motor lead-out wire sealing and fixing structure according to claim 1, wherein: the thickness of the deformation part is 1.2-1.5 times of the depth of the limit groove.