阅读说明：本技术 一种出线护套、定子及电机 (Outgoing line sheath, stator and motor ) 是由 吝文娟 唐宗兵 周浩 于 2021-08-26 设计创作，主要内容包括：本发明提供了一种出线护套、定子及电机,涉及电机技术领域,解决了定子注塑过程中注塑料溢料导致的电源线压断不良的技术问题。该出线护套包括护套本体、贯穿设置在护套本体上供线缆穿设的出线孔、以及设置在出线孔旁侧以将多余注塑料排出的泄料槽；泄料槽一端与出线孔连通,另一端延伸到护套本体出料的一端。本发明通过在出线孔旁侧开设泄料槽,保证定子在注塑过程中注塑料溢料至出线孔时沿泄料槽流动,同时具备排气功能,避免出线孔内溢料过多或气压过大,导致电源线压断。(The invention provides an outgoing line sheath, a stator and a motor, relates to the technical field of motors, and solves the technical problem of poor power line press-break caused by injection molding flash in the stator injection molding process. The outlet sheath comprises a sheath body, an outlet hole which is arranged on the sheath body in a penetrating way and is used for a cable to pass through, and a discharge chute which is arranged beside the outlet hole and is used for discharging redundant injection molding materials; one end of the discharge chute is communicated with the wire outlet hole, and the other end of the discharge chute extends to one end of the sheath body for discharging. The discharging groove is arranged beside the wire outlet hole, so that the stator is ensured to flow along the discharging groove when plastic flash is injected to the wire outlet hole in the injection molding process, and meanwhile, the discharging groove has an exhaust function, and the phenomenon that the power line is broken due to excessive flash or excessive air pressure in the wire outlet hole is avoided.)

1. A wire outlet sheath is characterized by comprising a sheath body, a wire outlet hole and a discharge chute, wherein the wire outlet hole is arranged on the sheath body in a penetrating manner and is used for a cable to pass through, and the discharge chute is arranged beside the wire outlet hole and is used for discharging redundant injection molding materials; one end of the discharge chute is communicated with the wire outlet hole, and the other end of the discharge chute extends to one end of the sheath body for discharging.

2. The outgoing line sheath of claim 1, wherein the chute comprises a bending section and a straight section which are arranged in sequence, and the bending section is connected to the feeding side of the outgoing line hole; the straight section is parallel to the wire outlet hole.

3. The outlet sheath of claim 2, wherein there is a space between the beginning of the bend section and the beginning of the outlet hole.

4. The outgoing line sheath of claim 2, wherein the angle between the beginning of the bending section and the axis of the outgoing line hole is an acute angle.

5. The outgoing line sheath of claim 2, wherein the junction of the bent section and the straight section is in a circular arc transition structure.

6. The outlet sheath of claim 1, wherein the chute is disposed to the left or right of the outlet hole.

7. The outgoing line sheath of claim 1, wherein the number of the outgoing line holes is three, the outgoing line holes are arranged side by side in sequence, and the number of the chute is three, and the chute is arranged on the left side or the right side of the three outgoing line holes in a one-to-one correspondence manner.

8. A stator comprising an outlet sheath according to any one of claims 1 to 7.

9. An electrical machine comprising a stator according to claim 8.

Technical Field

The invention relates to the technical field of motors, in particular to an outgoing line sheath, a stator and a motor.

Background

In the direct current motor strip line injection molding process, the three-hole outgoing line sheath flash causes the power line to press apart the defective rate outstanding, seriously influences product quality. During the injection molding process, the three-hole sheath flash overflows from the wire outlet hole, and the extrusion pressure of the power line is increased in the flash process to cause the power line to break.

In the prior art, in order to reduce flash, the aperture of a three-hole outgoing line sheath is generally reduced, and the problem of flash is not thoroughly solved though the reduction is improved.

Disclosure of Invention

The invention aims to provide an outgoing line sheath, a stator and a motor, and aims to solve the technical problem of poor power line fracture caused by injection molding flash in the injection molding process of the stator in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides an outgoing line sheath which comprises a sheath body, an outgoing line hole and a discharging groove, wherein the outgoing line hole penetrates through the sheath body and is used for a cable to penetrate through, and the discharging groove is arranged beside the outgoing line hole and is used for discharging redundant injection molding materials; one end of the discharge chute is communicated with the wire outlet hole, and the other end of the discharge chute extends to one end of the sheath body for discharging.

As a further improvement of the invention, the chute comprises a bending section and a straight section which are arranged in sequence, and the bending section is connected to the feeding side of the wire outlet hole; the straight section is parallel to the wire outlet hole.

As a further improvement of the invention, a gap is arranged between the starting end of the bending section and the starting end of the wire outlet hole.

As a further development of the invention, the spacing is 1 mm.

As a further improvement of the invention, an included angle is formed between the initial end of the bending section and the axis of the wire outlet hole, and the included angle is an acute angle.

As a further development of the invention, the angle of the included angle is in the range of 30 to 50 °.

As a further improvement of the invention, the joint of the bending section and the straight section is in a circular arc transition structure.

As a further improvement of the invention, the chute is arranged at the left side or the right side of the outlet hole.

As a further improvement of the invention, the number of the outlet holes is three, the outlet holes are sequentially arranged side by side, and the discharge chutes are three and are correspondingly arranged on the left or right sides of the three outlet holes one by one.

The invention provides a stator which comprises the outgoing line sheath.

The invention provides a motor which comprises the stator.

Compared with the prior art, the invention has the following beneficial effects:

according to the wire outlet sheath provided by the invention, the drain groove is arranged beside the wire outlet hole, so that the plastic flash in the injection molding process flows along the drain groove when reaching the wire outlet hole, and meanwhile, the wire outlet sheath has an exhaust function, and the phenomenon that the power line is broken due to excessive flash or excessive air pressure in the wire outlet hole is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the outgoing line sheath of the invention.

In figure 1, the sheath body; 2. a wire outlet hole; 3. a chute; 31. bending sections; 32. a straight section.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 1, the invention provides an outgoing line sheath, which comprises a sheath body 1, an outgoing line hole 2 which is arranged on the sheath body 1 in a penetrating manner and is used for a cable to pass through, and a discharging groove 3 which is arranged at the side of the outgoing line hole 2 and is used for discharging redundant injection molding materials; the chute 3 one end and wire hole 2 intercommunication, the other end extends to the one end of the 1 ejection of compact of sheath body.

It should be noted that the end of the sheath body 1 where the injection molding material overflows refers to the end where the excessive material overflows along with the drain chute and is discharged to the outside of the sheath where no power line exists.

The discharging groove is formed beside the wire outlet hole, so that the stator is guaranteed to flow along the discharging groove when plastic injection overflowing to the wire outlet hole in the injection molding process, and meanwhile, the discharging groove has an exhaust function, and the phenomenon that the power line is broken due to excessive overflowing in the wire outlet hole or excessive air pressure is avoided.

As an optional embodiment of the present invention, the chute 3 includes a bending section 31 and a straight section 32, which are sequentially arranged, the bending section 31 is connected to the feeding side of the outlet hole 2; the straight section 32 is parallel to the outlet hole 2.

Further, in order to ensure smooth outflow of the flash, the bending section 31 is an arc-shaped section.

Further, in this embodiment, there is a gap between the beginning of the bending segment 31 and the beginning of the outlet hole 2.

Further, in the present embodiment, the interval is 1mm, but of course, other specifications may be selected for the interval, and the interval needs to be determined according to the specification of the outlet hole 2.

Furthermore, an included angle is formed between the initial end of the bending section 31 and the axis of the wire outlet hole 2, and the included angle is an acute angle.

In this embodiment, the included angle is in the range of 30-50. It should be noted that the included angle is not fixed, and the angle is determined according to the size of the chute, the size of the space for arranging the energy chutes on the sheath, and the fluidity of the injection molding material.

For example, the flowing of the material is set to be most appropriate according to a certain type of plastic packaging material at an angle of 45 degrees, the material discharging is best, but the arrangement space of the sheath for the material discharging groove is not enough for arranging 45 degrees, only 40 degrees or 48 degrees can be arranged, the size of the material discharging groove can be properly increased by about 0.05mm, and the smooth material discharging can also be ensured.

As an alternative embodiment of the present invention, the joint of the bent section 31 and the straight section 32 is a circular arc transition structure.

The 3 initial points of chute select to move 1mm department after the feed inlet position, it has certain impact buffering to consider the injection molding material after the feeding, the 3 initial direction of chute is with wire hole 2 certain angle that becomes, the terminal direction is the chute of seting up with wire hole 2 is parallel, 3 ends of chute set up at 2 ends of wire hole on sheath body 1, it can be along with chute discharge to the outer no power cord department of sheath to consider unnecessary flash, avoid power cord viscose or power cord to be crowded absolutely by unnecessary glue, chute 3 corners adopts the circular arc transition, the discharge is smooth and easy when guaranteeing the discharge, it is whole mainly to utilize the drainage formula mode to carry out the discharge.

It should be noted that the position of the chute 3 can be selectively set according to the size of the space on both sides of the outlet hole 2, and the chute 3 needs to be arranged at a position with a larger space, so that the chute 3 is arranged on the left side or the right side of the outlet hole 2.

As shown in fig. 1, in the present embodiment, three outlet holes 2 are arranged side by side in sequence, and three chute 3 are arranged on the left or right side of the three outlet holes 2 in a one-to-one correspondence.

The invention provides a stator which comprises an outgoing line sheath and a cable embedded in the outgoing line sheath, wherein the cable and the outgoing line sheath are integrally formed in an injection molding mode.

The invention also provides a motor which comprises the stator.

According to the wire outlet sheath, the structure of the newly-added chute can be changed on the existing mold, the addition of the chute can be solved by adding spare parts, the investment is low, the implementation is fast, the operation mode of workers is not changed when the chute is added in the appearance and field use processes of the sheath, and the operation and use processes of the workers are feasible.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

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

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.