CN216751413U

CN216751413U - Sealing structure of motor shaft lead wire

Info

Publication number: CN216751413U
Application number: CN202220164162.9U
Authority: CN
Inventors: 施荣兵; 温继滦; 李乐阳
Original assignee: Feida Technology Co ltd
Current assignee: Feida Technology Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-14
Anticipated expiration: 2032-01-21

Abstract

The utility model provides a sealing structure of a motor shaft lead wire, and belongs to the technical field of hub motors. It has solved the trouble and the problem that became invalid easily of current lead wire seal structure processing. The motor shaft is provided with the threading hole, the sealing structure comprises a sealing plug which is used for leading the wire to pass through and has elasticity, a locking piece which is arranged outside the leading wire and has elasticity and a sleeve arranged outside the sealing plug is sleeved by the sealing plug, one end of the sealing plug close to the sealing plug is formed to have a convex edge which is outwards convexly arranged, the convex edge is arranged between the sealing plug and the locking piece, and the locking piece can tightly press and seal the sealing plug, the sealing plug and the convex edge in the threading hole. This seal structure of motor shaft lead wire has sealed effectual advantage, improves motor life.

Description

Sealing structure of motor shaft lead wire

Technical Field

The utility model belongs to the technical field of hub motors, and relates to a sealing structure of a motor shaft lead wire.

Background

The wheel of the electric vehicle generally adopts a hub motor which is used as a core component of the electric vehicle, and the hub motor integrates a power device, a transmission device and a braking device into a hub, so that the mechanical part of the electric vehicle is greatly simplified.

The in-wheel motor includes the motor shaft, has seted up the through wires hole on the motor shaft, and the through wires hole supplies the motor lead wire to pass, and the inner and the motor winding of lead wire are connected, and the external world is stretched out to the outer end, in order to prevent that motor winding from intaking, and other impurity enter into the motor, when actual assembly, need carry out sealing process to lead wire and through wires hole.

The sealing treatment mode of current threading line and through wires hole is that drilling out on the motor shaft and beating the gluey hole, beats gluey hole and through wires hole intercommunication, during sealed, pours into glue into through wires hole through beating the gluey hole in towards the through wires hole, makes whole through wires hole of glue full to realize the sealing treatment of threading line and through wires hole. However, in the sealing treatment mode of the lead wire and the threading hole, the requirement on the opening precision of the glue drilling hole is high, and the motor shaft is easily damaged when the glue drilling hole is drilled, so that the motor shaft is scrapped, and the production cost is increased. Meanwhile, after glue is injected into the threading holes, the temperature rises when the motor operates, and the motor can recover to normal temperature when the motor stops, so that the glue loses viscosity at cold time, a gap is generated between the lead wire and the threading holes, the sealing performance of the motor is reduced, and the service life of the motor is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing structure of a motor shaft lead wire aiming at the problems in the prior art, and solves the technical problems of improving the sealing effect of the sealing structure and prolonging the service life of a motor.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a seal structure of motor shaft lead wire, has the through wires hole in the motor shaft, its characterized in that, seal structure just has elastic sealing plug, cover and establish outside the lead wire and have elastic sealing sleeve and establish the retaining member outside the sealing sleeve including supplying the lead wire to pass, the one end shaping that the sealing sleeve is close to the sealing plug has protruding edge that sets up outwards protrusion, protruding edge is located between sealing plug and the retaining member, the retaining member can be with sealing plug, sealing sleeve and protruding edge gland seal in the through wires hole.

During the equipment, with the sealing plug, seal cover and retaining member all overlap outside the lead wire, pass the through wires hole with the lead wire, then make the sealing plug, seal cover and retaining member all imbed in the through wires hole, again with retaining member and motor shaft locking, the retaining member promotes protruding edge, protruding edge promotes the sealing plug, because the sealing plug, seal cover and protruding edge all have elasticity, the sealing plug, seal cover and protruding edge are sealed to be fixed in the through wires hole that warp, thereby realize the sealed of lead wire and motor shaft and link firmly, seal structure is difficult for receiving the influence of the temperature difference change when the motor works, it is sealed effectual, simultaneously this seal structure's retaining member is dismantled and assembled, thereby make seal structure dismantled and assembled, locking is convenient, it is convenient to dismantle.

In the above sealing structure of the motor shaft lead wire, the lead wire includes an outer sheath and a plurality of wire cores passing through the outer sheath, the sealing plug has a plurality of sealing holes passing through, the wire cores pass through the corresponding sealing holes, and the outer sheath can abut against the sealing plug. The lead wire is divided into two parts, the inner end of each wire core extends into the motor to be connected with the motor winding, the outer end of each wire core is sleeved with an outer sheath which plays a role in protecting the wire core, the wire cores penetrate through corresponding sealing holes, namely, each wire core and the sealing sleeve are independently sealed, a better sealing effect is achieved, the outer sheaths abut against the sealing sleeves, and the strength and the sealing effect of the wire cores at the positions are improved.

In the sealing structure of the motor shaft lead wire, when the sealing plug is fixed in the threading hole in a sealing manner, the outer side wall of the sealing plug is attached to the inner side wall of the threading hole, and the inner side wall of the sealing hole is attached to the outer side wall of the corresponding wire core. This kind of structure makes this seal structure play better sealed effect, makes outside impurity and water can not enter into inside the motor through the through wires hole.

In the sealing structure of the motor shaft lead wire, the outer side wall of the sealing plug is provided with a first conical sealing surface, the inner side wall of the lead hole is provided with a second conical sealing surface, and when the sealing plug is sealed and fixed in the lead hole, the first sealing surface is tightly attached to the second sealing surface. Through being conical sealed face, make the sealing plug can be inseparabler the laminating sealed in the through wires hole, stability when improving the sealing plug and sealing improves this seal structure's sealed effect.

In the sealing structure of the motor shaft lead wire, the sealing sleeve and the outer sheath are of a split structure or are integrally formed through injection molding. The split structure can select different sealing sleeves, so that the sealing effect is improved; the integrated structure, protruding edge, seal cover and oversheath are integrated as an organic whole, and processing is convenient.

In the sealing structure of the motor shaft lead wire, the convex edge is annular, when the sealing sleeve is fixed in the lead hole in a sealing mode, one side of the convex edge is tightly attached to the sealing sleeve, the circumferential outer side wall of the convex edge is tightly attached to the inner side wall of the lead hole, and the inner side wall of the sealing sleeve is tightly attached to the outer side wall of the lead wire. This kind of structure makes this seal structure play better sealed effect, makes outside impurity and water can not enter into inside the motor through the through wires hole.

In foretell seal structure of motor shaft lead wire, have the guide ring that is the annular protrusion setting on the lateral wall of seal cover, the lateral wall of guide ring is outwards protruding gradually towards protruding edge direction along the retaining member, the guide ring sets up with protruding adjacent along. This kind of structure, under the effect of retaining member, the setting up of guide ring makes that what the seal cover can be better contracts inwards towards the lead wire promptly, makes that the seal cover can be better with lead wire formation sealed, improves sealed effect. In foretell seal structure of motor shaft lead wire, the retaining member is cyclic annular, the external screw thread has on the lateral wall of retaining member, the internal thread has on the inside wall of through wires hole, the outer tip that the protruding edge was kept away from to the retaining member has the rotatory bayonet socket of confession instrument interlock that a plurality of is recessed to be set up. The retaining member links firmly through the rotatory locking mode of screw thread, easy dismounting to make dismantled and assembled and easy dismounting of this seal structure, the setting up of bayonet socket makes the instrument lock the retaining member in can entering into the through wires hole like the spanner, makes the sealed sealing plug, seal cover and protruding edge that compresses tightly that the retaining member can be better, improves this seal structure's sealed effect.

In the sealing structure of the motor shaft lead wire, the sealing sleeve is further sleeved with an annular metal gasket, and the metal gasket is located between the convex edge and the locking piece. The setting of metal gasket has improved the contact on retaining member and protruding edge in other words, has improved the contact of retaining member and guide ring, makes the retaining member rotatory can be through the protruding removal of following of the better promotion of metal gasket, makes the retaining member rotatory can be through the better contact with the guide ring of metal gasket, improves the sealed effect of seal cover and lead wire.

In the above sealing structure of the motor shaft lead wire, the sealing plug, the sealing sleeve and the convex edge are all made of rubber materials.

Compared with the prior art, the sealing structure of the motor shaft lead wire provided by the utility model has the following advantages:

1. this seal structure promotes protruding edge, seal cover and sealing plug through the mode of rotatory retaining member and removes, makes protruding edge, seal cover and sealing plug compress tightly sealed and link firmly in the through wires hole, because the retaining member carries out the dismouting through the rotatory mode that links firmly of screw thread, therefore this seal structure also can dismantle, and easy dismounting.

2. This seal structure's protruding edge, seal cover and sealing plug can produce certain deformation when being compressed tightly by retaining member to make the sealed laminating that can be better between each spare part, improve the leakproofness, the deformation volume of protruding edge, seal cover and sealing plug can be controlled through the elasticity that the retaining member was screwed simultaneously, in order to reach different gas tightness grades.

Drawings

Fig. 1 is a state diagram of the sealing structure at the time of sealing.

Fig. 2 is an exploded view of the present seal structure.

In the figure, 1, a motor shaft; 11. threading holes; 12. a second sealing surface; 2. lead wires; 21. an outer sheath; 22. a wire core; 3. a sealing plug; 31. sealing the hole; 32. a first sealing surface; 4. sealing sleeves; 41. a convex edge; 42. a guide ring; 5. a locking member; 51. a bayonet; 6. a metal gasket.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, a threading hole 11 is formed in the motor shaft 1, the threading hole 11 is used for the lead wire 2 to pass through, and the sealing structure of the lead wire 2 of the motor shaft 1 comprises a sealing plug 3, a sealing sleeve 4, a locking member 5 and a metal gasket 6.

In this embodiment, the lead wire 2 includes an outer sheath 21 and eight wire cores 22 penetrating through the outer sheath 21, eight sealing holes 31 penetrating through are formed in the sealing plug 3, the wire cores 22 and the sealing holes 31 are arranged in a one-to-one correspondence manner, the wire cores 22 penetrate through the corresponding sealing holes 31, the outer sheath 21 can abut against the sealing plug 3, and in actual production, the number of the wire cores 22 and the number of the sealing holes 31 may be three or fifteen. Have on the lateral wall of sealing plug 3 and be conical first sealed face 32, have on the inside wall of through wires hole 11 and be conical second sealed face 12, when sealing plug 3 is sealed to be fixed in through wires hole 11, the lateral wall of sealing plug 3 is laminated mutually with the inside wall of through wires hole 11, and first sealed face 32 is hugged closely on second sealed face 12, and the inside wall of sealed hole 31 is laminated mutually with the outside wall of corresponding sinle silk 22.

In this embodiment, the sealing sleeve 4 and the outer sheath 21 are of a split structure, and in actual production, the sealing sleeve 4 and the outer sheath 21 can be integrally formed by injection molding.

One end of the sealing sleeve 4 close to the sealing plug 3 is provided with a guide ring 42 which is convexly arranged, the convex edge 41 and the guide ring 42 are both annular, the guide ring 42 is arranged adjacent to the convex edge 41, and the outer side wall of the guide ring 42 is gradually and outwards protruded towards the convex edge 41 along the locking piece 5. When the sealing sleeve 4 is fixed in the threading hole 11 in a sealing manner, one side of the convex edge 41 is tightly attached to the sealing plug 3, the circumferential outer side wall of the convex edge 41 is tightly attached to the inner side wall of the threading hole 11, and the inner side wall of the sealing sleeve 4 is tightly attached to the outer side wall of the guiding line 2. The sealing plug 3, the sealing sleeve 4 and the convex edge 41 are all made of rubber materials, and the sealing plug 3, the sealing sleeve 4 and the convex edge 41 are all elastic.

The sealing sleeve 4 is sleeved with an annular locking part 5 and an annular metal gasket 6, the metal gasket 6 is positioned between the convex edge 41 and the locking part 5, and the convex edge 41 is positioned between the sealing plug 3 and the metal gasket 6. The outer side wall of the locking member 5 is provided with an external thread, the inner side wall of the threading hole 11 is provided with an internal thread, in this embodiment, the outer end part of the locking member 5 far away from the convex edge 41 is provided with four concave bayonets 51 for the engagement and rotation of a tool such as a wrench, and in actual production, the number of the bayonets 51 can be three or six.

During the equipment, pass the sealed hole 31 in the seal cover 4 that corresponds in proper order with sinle silk 22, again with seal cover 4, metal gasket 6 and retaining member 5 cover outside oversheath 21, then pass through wires hole 11 with sinle silk 22, and make seal cover 4, metal gasket 6 and retaining member 5 imbed in the through wires hole 11, bayonet 51 and rotatory retaining member 5 through spanner contact retaining member 5, make retaining member 5 promote metal gasket 6 inwards, protruding edge 41, seal cover 4 and sealing plug 3, finally make protruding edge 41, seal cover 4 and sealing plug 3 warp and compress tightly sealedly, realize the sealed to lead wire 2 and through wires hole 11.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms motor shaft 1, threading hole 11, second sealing surface 12, lead wire 2, outer jacket 21, wire core 22, sealing plug 3, sealing hole 31, first sealing surface 32, sealing sleeve 4, flange 41, guide ring 42, retaining member 5, bayonet 51, metal washer 6, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a seal structure of motor shaft lead wire, has through wires hole (11) in motor shaft (1), its characterized in that, seal structure just has elastic sealing plug (3) including supplying lead wire (2) to pass, the cover is established outside lead wire (2) and is had elastic sealing cover (4) and cover and establish retaining member (5) outside sealing cover (4), the one end shaping that sealing cover (4) are close to sealing plug (3) has protruding edge (41) that sets up outwards, protruding edge (41) are located between sealing plug (3) and retaining member (5), retaining member (5) can compress tightly sealed in through wires hole (11) with sealing plug (3), sealing cover (4) and protruding edge (41).

2. The sealing structure of the motor shaft lead wire of claim 1, characterized in that the lead wire (2) comprises an outer sheath (21) and a plurality of wire cores (22) passing through the outer sheath (21), the sealing plug (3) is provided with a plurality of sealing holes (31) therethrough, the wire cores (22) pass through the corresponding sealing holes (31), and the outer sheath (21) can abut on the sealing plug (3).

3. The sealing structure of the motor shaft lead wire of claim 2, characterized in that when the sealing plug (3) is sealed and fixed in the lead hole (11), the outer side wall of the sealing plug (3) is attached to the inner side wall of the lead hole (11), and the inner side wall of the sealing hole (31) is attached to the outer side wall of the corresponding wire core (22).

4. A sealing structure of a motor shaft lead wire according to claim 1, 2 or 3, characterized in that the outer side wall of the sealing plug (3) is provided with a first sealing surface (32) with a conical shape, the inner side wall of the lead hole (11) is provided with a second sealing surface (12) with a conical shape, and when the sealing plug (3) is sealed and fixed in the lead hole (11), the first sealing surface (32) is tightly attached to the second sealing surface (12).

5. The sealing structure of the motor shaft lead wire according to claim 2 or 3, wherein the sealing sleeve (4) and the outer sheath (21) are of a split structure or the sealing sleeve (4) and the outer sheath (21) are integrally formed by injection molding.

6. The sealing structure of the motor shaft lead wire according to claim 1, 2 or 3, characterized in that the convex edge (41) is annular, when the sealing sleeve (4) is sealed and fixed in the lead wire hole (11), one side of the convex edge (41) is tightly attached to the sealing plug (3), the circumferential outer side wall of the convex edge (41) is tightly attached to the inner side wall of the lead wire hole (11), and the inner side wall of the sealing sleeve (4) is tightly attached to the outer side wall of the lead wire (2).

7. The sealing structure of the motor shaft lead wire of claim 1, 2 or 3, characterized in that the outer side wall of the sealing sleeve (4) is provided with a guide ring (42) which is annularly protruded, the outer side wall of the guide ring (42) is gradually protruded outwards along the locking piece (5) towards the convex edge (41), and the guide ring (42) is arranged adjacent to the convex edge (41).

8. The sealing structure of the motor shaft lead wire of claim 1, 2 or 3, characterized in that the locking member (5) is ring-shaped, the outer side wall of the locking member (5) is provided with external threads, the inner side wall of the lead wire hole (11) is provided with internal threads, and the outer end part of the locking member (5) far away from the convex edge (41) is provided with a plurality of concavely arranged bayonets (51) for the engaging rotation of a tool.

9. The sealing structure of the motor shaft lead wire according to claim 1, 2 or 3, characterized in that the sealing sleeve (4) is further sleeved with an annular metal gasket (6), and the metal gasket (6) is positioned between the convex edge (41) and the locking member (5).

10. A sealing structure of a motor shaft lead wire according to claim 1, 2 or 3, characterized in that the sealing plug (3), the sealing sleeve (4) and the flange (41) are made of rubber material.