CN210744916U

CN210744916U - Waterproof cable module and brushless motor using same

Info

Publication number: CN210744916U
Application number: CN201922398830.5U
Authority: CN
Inventors: 涂彭涛; 邓全伟; 倪振国
Original assignee: Jiangsu Leili Motor Co Ltd
Current assignee: Jiangsu Leili Motor Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-06-12
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a waterproof cable module and a brushless motor using the same, which comprises an outgoing line sheath, a cable and a cable sealing sleeve arranged between the cable and the outgoing line sheath; the outgoing line sheath comprises an outer sealing body, a connecting body and an inner sealing body which are arranged along the axial direction of the cable and are integrally formed; a recessed section formed by the connector is formed on the side end surface of the inner sealing body opposite to the side end surface of the outer sealing body; and a through hole suitable for the cable gland to penetrate is arranged in the outer sealing body, the connecting body and the inner sealing body in a penetrating mode along the axis of the cable. The utility model discloses can effectively improve the waterproof performance of cable and casing cooperation department, and can also effectively simplify the water repellent treatment technology of cable and casing cooperation department.

Description

Waterproof cable module and brushless motor using same

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a waterproof cable module and use brushless motor of this waterproof cable module.

Background

The direct current motor for the auxiliary brake system of the automobile has poor protective performance, the service life of the whole machine is short, and the use requirement of a new energy automobile is difficult to meet. In order to meet the quality requirement of the original new-energy vehicle on the motor for the auxiliary brake system, the original direct-current brush motor needs to be replaced by a direct-current brushless motor with the protection performance reaching IP67 and the service life being more than 8000 h.

The protection level of the brushless motor cable on the market is low at present, and the cable cannot reach IP 67. Although part of the brushless motor can also reach IP67, the sealing of the outlet is realized by complex parts, and some sealing glue is needed to be added, so the sealing method is not tight, has high cost and complex process, and has certain pollution.

Two sealing surfaces exist independently in the matching between a motor shell and a motor end cover which form an outlet hole through which a cable passes, complete sealing is realized, the sealing requirement of IP67 is met, sealing is realized by a combined sealing part, the cost and the process difficulty are greatly increased, a large space is occupied, and the attractiveness of the whole machine is influenced. If the sealing glue is used for sealing, the sealing glue has fluidity, after the two matching surfaces are attached, overflowed glue can flow into the motor to influence electronic components in the motor, and peculiar smell and air pollution can be generated after the motor operates.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a waterproof cable module to solve the technical problem who simplifies the waterproof operation technology of cable.

A second object of the present invention is to provide a brushless motor to solve the technical problem of simplifying the waterproof operation process between the motor housing and the cable.

The utility model discloses a waterproof cable module is realized like this:

a waterproof cable module comprising: the cable outgoing device comprises an outgoing line sheath, a cable and a cable sealing sleeve arranged between the cable and the outgoing line sheath;

the outgoing line sheath comprises an outer sealing body, a connecting body and an inner sealing body which are arranged along the axial direction of the cable and are integrally formed;

a recessed section formed by the connector is formed on the side end surface of the inner seal body facing the outer seal body; and

through holes suitable for the cable gland to penetrate are arranged in the outer sealing body, the connecting body and the inner sealing body along the axis of the cable.

In the preferred embodiment of the present invention, the outgoing line sheath and the cable sealing sleeve are integrally cast on the circumferential outer diameter surface of the cable.

The utility model discloses a brushless motor realizes like this:

a brushless motor comprising: the waterproof cable module is matched and connected with the radial contact end faces of the machine shell and the end covers; wherein

An outlet groove suitable for being matched and connected with an outlet sheath of the waterproof cable module is concavely arranged on the end face, matched and connected with the end cover, of the shell;

the concave region of the outlet sheath forms a structure suitable for being modeled with the notch of the outlet groove; and

when the outlet groove is matched and connected with the outlet sheath, the groove edge of the outlet groove is suitable for being accommodated in the sunken area of the outlet sheath, namely, the connector is clamped in the outlet groove, the inner sealing body of the outlet sheath is attached to the inner wall of the shell, and the outer sealing body is attached to the outer wall of the shell.

In a preferred embodiment of the present invention, after the wire outlet groove is coupled with the wire outlet sheath, a side end surface of the wire outlet sheath facing the end cover is a plane and is adapted to slightly protrude from a side end surface of the housing facing the end cover; and

when the end cover is matched and connected with the machine shell, the outlet sheath is pressed by the end cover so that the side end face of the outlet sheath facing the end cover is flush with the side end face of the machine shell facing the end cover.

In a preferred embodiment of the present invention, after the wire outlet groove is connected to the wire outlet sheath, the side end surface of the wire outlet sheath facing the end cover protrudes slightly from the side end surface of the housing facing the end cover by 0.2-0.3 mm.

In a preferred embodiment of the present invention, the wire-outlet groove includes an inner wire-outlet groove opening corresponding to the inner wall of the housing and an outer wire-outlet groove opening corresponding to the outer wall of the housing;

the inner sealing body and the outer sealing body both adopt arc structures; wherein

The radian of the inner sealing body is the same as that of the inner opening of the wire outlet groove and covers the inner opening of the wire outlet groove; the radian of the outer sealing body is the same as that of the outer outlet of the wire outlet groove and covers the outer outlet of the wire outlet groove.

In the preferred embodiment of the present invention, the distance between the corresponding concave regions formed between the inner sealing body and the outer sealing body is smaller than the distance between the inner opening of the wire-out groove and the outer opening of the wire-out groove, so that the wire-out groove and the wire-out sheath are connected to each other, the inner sealing body is tightly attached to the inner wall of the housing, and the outer sealing body is tightly attached to the outer wall of the housing.

In a preferred embodiment of the present invention, a difference between a distance between the corresponding concave section formed between the inner sealing body and the outer sealing body and a distance between the inner opening of the wire groove and the outer opening of the wire groove is 0.08 to 0.5 mm.

In the preferred embodiment of the present invention, the end cover is provided with an end cover sealing surface facing the side end of the housing, and the end cover sealing surface is connected with the outgoing line sheath and the end surface of the housing facing the end cover in a pressing and sealing manner.

In a preferred embodiment of the present invention, a seam allowance is further disposed on an end surface of the end cover facing the housing; and

and the spigot is provided with a spigot notch which is suitable for being correspondingly matched with the inner sealing body of the outgoing line sheath.

By adopting the technical scheme, the utility model discloses beneficial effect once has: the utility model discloses a waterproof cable module and use brushless motor of this waterproof cable module, it connects the sheath of being qualified for the next round of competitions to mould plastics to cable conductor an organic whole, can realize and improve cable conductor and motor casing complex sealing and waterproof nature through the sheath of being qualified for the next round of competitions when adapting cable conductor and motor casing, such structure is waterproof performance not only good, and form holistic modular structure with cable conductor and the sheath of being qualified for the next round of competitions, the cooperation technology when can simplify this modular structure and motor casing assembly, avoid adopting the problem that polluted environment and colloid that still need the sealed gluey technology of filling exist between cable conductor among the prior art and the motor casing spill over easily.

Drawings

Fig. 1 is a first view structural diagram of the outgoing line sheath in this embodiment 1;

fig. 2 is a second perspective structural view of the outgoing line sheath of the embodiment 1;

fig. 3 is a third view structural diagram of the outgoing line sheath in the embodiment 1;

fig. 4 is a first view structural diagram of a waterproof cable module formed under the cable and the outgoing line sheath in the embodiment 1;

fig. 5 is a second perspective structural view of the waterproof cable module formed by the cable and the outgoing line sheath in the embodiment 1;

fig. 6 is a first perspective structural view of the waterproof cable module of this embodiment 2 in cooperation with a housing;

fig. 7 is a second perspective structural view of the waterproof cable module of this embodiment 2 in cooperation with the housing;

fig. 8 is a schematic structural diagram of an outlet groove of the housing of embodiment 2;

fig. 9 is a schematic structural diagram of the case and the end cap of embodiment 2 in an exploded state;

fig. 10 is a first perspective structural view of the waterproof cable module of this embodiment 2 in a state of being fitted with the housing and the end cap;

fig. 11 is a second perspective structural diagram of the waterproof cable module of this embodiment 2 in a state of being fitted with the housing and the end cap.

In the figure: the cable outgoing device comprises a cable outgoing sheath 1, an outer sealing body 101, a connecting body 102, an inner sealing body 103, a cable 2, a cable sealing sleeve 3, a machine shell 4, an end cover 5, a cable outgoing groove 6, a cable outgoing groove inner opening 601, a cable outgoing groove outer opening 602, a seam allowance 7, a seam allowance notch 9 and a concave interval K.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 5, the present embodiment provides a waterproof cable module, including: the cable outgoing device comprises an outgoing line sheath 1, a cable 2 and a cable sealing sleeve 3 arranged between the cable 2 and the outgoing line sheath 1; the outgoing line sheath 1 comprises an outer sealing body 101, a connecting body 102 and an inner sealing body 103 which are arranged along the axial direction of the cable 2 and are integrally formed; a recessed section K formed by the connecting body 102 is formed on the side end surface of the inner seal body 103 facing the outer seal body 101; and a through hole adapted to pass the cable gland 3 is inserted through the outer sealing body 101, the connecting body 102, and the inner sealing body 103 along the axis of the cable 2. That is, the cable 2 passes through the outer sealing body 101, the connecting body 102 and the inner sealing body 103 through the cable sealing sleeve 3 to form a connecting structure of the cable 2 and the outgoing line sheath 1.

Under an optional implementation condition, the outgoing line sheath 1 and the cable sealing sleeve 3 are integrally cast and molded on the circumferential outer diameter surface of the cable 2, so that the outgoing line sheath 1 and the cable 2 form an integrated structure, that is, the cable 2, the outgoing line sheath 1 and the cable sealing sleeve 3 jointly form a modular structure, when the cable 2 is connected with the motor casing 4 in a matching mode, only the outgoing line sheath 1 and the motor casing 4 are connected in a matching mode, and at the moment, the waterproof sealing performance of the connection position of the cable 2 and the motor casing 4 is realized by the matching of the outgoing line sheath 1 and the motor. According to the structure, manual threading is not needed, so that the operation cost is reduced, the integral sealing performance can be enhanced, and the situation that the sealing performance is reduced possibly in a split structure of the cable 2 and the outgoing line sheath 1 is avoided.

The outgoing line sheath 1 and the cable gland 3 of the present embodiment may be made of, for example, but not limited to, rubber, so that the outgoing line sheath 1 has a characteristic of easy extrusion deformation, and when the outgoing line sheath 1 is assembled with the cable 2 and the motor casing 4, the sealing effect when the outgoing line sheath 1 is coupled with the motor casing 4 can be further improved by extrusion deformation.

Example 2:

referring to fig. 1 to 11, on the basis of the waterproof cable module of embodiment 1, the present embodiment provides a brushless motor, including: a housing 4, an end cap 5 coupled to the housing 4, and a waterproof cable module as in embodiment 1 coupled to the radial contact end faces of the housing 4 and the end cap 5.

In detail, a wire outlet groove 6 adapted to be coupled with the wire outlet sheath 1 of the waterproof cable module is concavely arranged on an end surface of the housing 4 coupled with the end cover 5, where the wire outlet groove 6 is a channel for leading out a motor power line from the inside of the housing 4 to the outside, and the channel is specifically formed by the wire outlet groove 6 on the housing 4 and the end cover 5 in a surrounding manner. To achieve the IP67 protection level, the channel must be completely sealed, and the seal is strong and not easy to loosen. Therefore, when the cable 2 is connected with the outlet groove 6 through the outlet sheath 1, not only the sealing fit between the outlet sheath 1 and the outlet groove 6 is required to be satisfied, but also the sealing fit between the outlet sheath 1 and the end cover 5 is required to be realized.

Firstly, regarding the sealing fit between the outlet sheath 1 and the outlet groove 6:

the sunken interval K of the outgoing line sheath 1 forms a structure suitable for being imitated with the notch of the outgoing line groove 6; and when the outlet groove 6 is matched and connected with the outlet sheath 1, the groove edge of the outlet groove 6 is suitable for being accommodated in the sunken interval K of the outlet sheath 1, namely the connecting body 102 is clamped in the outlet groove 6, the inner sealing body 103 of the outlet sheath 1 is attached to the inner wall of the casing 4, and the outer sealing body 101 is attached to the outer wall of the casing 4. That is to say, the outlet casing 1 forms a surrounding covering structure for the outlet groove 6, so that an efficient sealing fit is formed between the outlet groove 6 and the outlet casing 1.

In the present embodiment, taking a case as an example with reference to the drawings, when the outlet groove 6 has an arc-shaped notch structure, the concave section K formed between the outer sealing body 101 and the inner sealing body 103 and based on the connecting body 102 has an arc-shaped structure matching with the arc-shaped profile of the outlet groove 6. For the outer sealing body 101 and the inner sealing body 103, the outer sealing body 101 and the inner sealing body 103 are respectively suitable for being tightly attached to the outer wall and the inner wall of the casing 4, the side end face of the outer sealing body 101 facing the wire outlet groove 6 is an arc-shaped face, and the side end face of the inner sealing body facing the wire outlet groove 6 is an arc-shaped face, that is, the outer sealing body 101 and the inner sealing body 103 are respectively formed into a profile design structure suitable for the end faces of the outer wall and the inner wall of the casing corresponding to the wire outlet groove 6, so that the attaching degree of the outer sealing body 101 and the outer wall of the casing 4 and the attaching degree of the inner sealing body 103 and the inner wall of the.

That is, for the integral outlet sheath 1, the outer sealing body 101 and the inner sealing body 103 respectively form a profiling design structure matched with the arc shape of the outer side wall and the inner side wall of the casing 4, and the depressed section K formed between the outer sealing body 101 and the inner sealing body 103 and based on the connecting body 102 is a profiling design structure matched with the shape of the notch of the outlet groove 6, that is, the integral outlet sheath 1 forms a profiling structure matched with the outlet groove 6, and has a surrounding covering type sealing effect on the outlet groove 6.

Secondly, regarding the sealing fit between the outlet sheath 1 and the end cap 5:

after the outlet groove 6 is matched and connected with the outlet sheath 1, the side end surface of the outlet sheath 1 facing the end cover 5 is a plane and is suitable for slightly protruding out of the side end surface of the machine shell 4 facing the end cover 5; and when the end cover 5 is matched with the machine shell 4, the outlet sheath 1 is pressed by the end cover 5 so that the side end face of the outlet sheath 1 facing the end cover 5 is flush with the side end face of the machine shell 4 facing the end cover 5. That is to say, or when the outer sealing body 101 and the inner sealing body 103 are adapted to match the arc-shaped structure of the arc-shaped profile of the outlet groove 6 and then the end faces of the outlet sheath 1 facing the end cover 5 are flat, the outer sealing body 101 and the inner sealing body 103 with the arc-shaped structures are formed.

Here, for convenience of processing, an end face of the general end cover 5 adapted to be mated with the housing 4, that is, a sealing surface on the end cover 5 for forming a seal with the housing 4, is a flat end face, and therefore, a side end face of the outlet sheath 1 facing the end cover 5 in the present embodiment is a flat end face. That is, the shape of the side end face of the outgoing line sheath 1 facing the end cover 5 is a profile design structure made according to the sealing surface of the end cover 5 matched with the shell 4.

In addition, the end cover 5 is provided with an end cover 5 sealing surface facing the side end of the casing 4, and the end cover 5 sealing surface is connected with the outlet wire sheath 1 and the end surface of the casing 4 facing the end cover 5 in a pressing and sealing manner. Furthermore, a stop 7 is provided on the end face of the end cover 5 facing the housing 4 to ensure the coaxiality of the rotor arranged on the end cover 5. Since the spigot 7 is embedded in the inner cavity of the housing 4, the spigot 7 of the present embodiment is further provided with a spigot notch 9 adapted to be correspondingly matched with the inner sealing body 103 of the outgoing line sheath 1, where the spigot notch 9 is designed such that when the end cover 5 is assembled with the housing 4, the spigot 7 can avoid the inner sealing body 103 located in the inner cavity of the housing 4, and thus the shape of the spigot notch 9 is adapted to match with the inner sealing body 103.

In addition, for the matching between the outgoing line sheath 1 and the end cover 5 of the embodiment, when the end cover 5 does not contact the outgoing line sheath 1, only after the outgoing line sheath 1 and the outgoing line groove 6 are normally assembled, the outgoing line sheath 1 slightly protrudes from the side end surface of the case 4 facing the end cover 5, and the side end surface of the outgoing line sheath 1 facing the end cover 5 slightly protrudes from the side end surface of the case 4 facing the end cover 5 by 0.2-0.3 mm, preferably 0.25mm, when the end cover 5 is matched with the case 4, the end cover 5 presses the outgoing line sheath 1 so that the side end surface of the outgoing line sheath 1 facing the end cover 5 is flush with the side end surface of the case 4 facing the end cover 5, in this process, it is necessary to utilize the characteristic that the material itself of the outgoing line sheath 1 is naturally pressed and easily appears. Under such structure, make the sheath 1 of being qualified for the next round of competitions take place deformation, this deformation makes sealed effect better, because after the sheath 1 deformation of being qualified for the next round of competitions, the laminating power between sheath 1 and the casing 4 of being qualified for the next round of competitions to and form between sheath 1 and the end cover 5 of being qualified for the next round of competitions between the sealed contact surface is bigger, and sealed effect is better.

For the sealing fit between the outlet sheath 1 and the housing 4, it is also supplementary noted that the outlet groove 6 includes an outlet groove inner port 601 corresponding to the inner wall of the housing 4 and an outlet groove outer port 602 corresponding to the outer wall of the housing 4; the arc-shaped edge of the inner sealing body 103 has the same radian as the inner outlet 601 of the wire outlet groove and covers the inner outlet 601 of the wire outlet groove; the arc-shaped edge of the outer sealing body 101 has the same arc as the arc of the outlet groove outer opening 602 and covers the outlet groove outer opening 602.

The distance between the corresponding concave sections K formed between the inner sealing body 103 and the outer sealing body 101 is smaller than the distance between the outlet groove inner opening 601 and the outlet groove outer opening 602, so that the inner sealing body 103 is tightly attached to the inner wall of the casing 4 and the outer sealing body 101 is tightly attached to the outer wall of the casing 4 after the outlet groove 6 is matched and connected with the outlet sheath 1. Here, the difference between the distance between the corresponding concave section K formed between the inner sealing body 103 and the outer sealing body 101 and the distance between the outlet groove inner opening 601 and the outlet groove outer opening 602 is 0.08 to 0.5mm, preferably 0.35mm, so that the inner sealing body 103 and the outer sealing body 101 are bonded to the inner wall and the outer wall of the casing 4, respectively, to achieve a better bonding effect, and the sealing effect when the entire outlet sheath 1 is fitted to the casing 4 is improved.

To sum up, to realize respectively through the sheath 1 of being qualified for the next round of competitions between brushless motor's casing 4 and the waterproof cable module of this embodiment with casing 4 and end cover 5 between the sealed cooperation for need not additionally to annotate waterproof sealing colloid again to cable conductor 2 and casing 4's cooperation, thereby avoid the colloid that the waterproof sealing colloid of filling exists to spill over and the problem of polluted environment.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the mechanism or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A waterproof cable module, comprising: the cable outgoing device comprises an outgoing line sheath, a cable and a cable sealing sleeve arranged between the cable and the outgoing line sheath;

2. The waterproof cable module of claim 1 wherein the outlet sheath and cable gland are integrally cast on the circumferential outer diameter face of the cable.

3. A brushless motor, comprising: a housing, an end cap coupled to the housing, and the waterproof cable module of any one of claims 1 or 2 coupled to a radial contact end face of the housing and the end cap; wherein

4. The brushless electric machine of claim 3, wherein after the outlet slots are mated with the outlet sheaths, the side end faces of the outlet sheaths facing the end caps are planar and adapted to protrude slightly beyond the side end faces of the housing facing the end caps; and

5. The brushless motor of claim 4, wherein after the outlet slots are mated with the outlet sheaths, the side end surfaces of the outlet sheaths facing the end covers slightly protrude out of the side end surfaces of the housing facing the end covers by 0.2-0.3 mm.

6. The brushless electric machine of claim 3, wherein the outlet slots include an inner outlet slot opening corresponding to an inner wall of the housing and an outer outlet slot opening corresponding to an outer wall of the housing;

7. The brushless electric machine of claim 6, wherein the spacing between corresponding recessed regions formed between the inner and outer seals is less than the distance between the outlet groove inner and outer outlet such that the inner seal abuts against the housing inner wall and the outer seal abuts against the housing outer wall after the outlet groove is mated with the outlet jacket.

8. The brushless electric machine according to claim 7, wherein a difference between a pitch between corresponding concave sections formed between the inner seal body and the outer seal body and a distance between an inner outlet of the outlet groove and an outer outlet of the outlet groove is 0.08 to 0.5 mm.

9. The brushless motor of any one of claims 3-7, wherein the end cover is provided with an end cover sealing surface towards the side end of the housing, and the end cover sealing surface is in compression sealing connection with the outlet wire sheath and the end surface of the housing towards the end cover.

10. The brushless electric machine of claim 9, wherein a spigot is further provided on an end surface of the end cap facing the housing; and