Wire outlet clamp, wire outlet sealing structure and motor

Abstract

The invention provides a wire outlet clamp, a wire outlet sealing structure and a motor, the wire outlet clamp comprises a wire outlet clamp body, a plurality of wire outlet holes are formed in the wire outlet clamp body, conversion structures are arranged in a part of the wire outlet holes respectively, each conversion structure has a dredging state and a sealing state, and when the conversion structures are in the dredging state, the conversion structures are sealed in the sealing state. When the conversion structure is in a sealed state, the wire outlet hole provided with the conversion structure is dredged so that the outgoing wire can pass through, and when the conversion structure is in the sealed state, the wire outlet hole provided with the conversion structure is sealed by the conversion structure. According to the wire outlet clamp, when the number of the wire outlet holes in the wire outlet clamp is five and the conversion structures are arranged in two of the wire outlet holes, the two conversion structures can enable the number of the wire outlet holes in a smooth state in the wire outlet clamp to be changed between five and three, and dustproof and waterproof effects can be ensured, so that the wire outlet clamp can be universal for three wires and five wires; and only one set of die needs to be opened during production, so that the investment can be reduced and resources can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a wire outlet clamp, a wire outlet sealing structure, and a motor. Background Art

[0002] With the impact of energy efficiency upgrades, the use of brushless DC motors has become more and more widespread, and the application sites have expanded to multiple fields. The use environment has become more and more demanding, and the requirements for motors have become more and more stringent. Currently, existing brushless DC motors have three-wire external drive and five-wire internal drive categories. However, the difference between three-wire and five-wire cannot be used in a vertical installation environment, and two sets of molds need to be opened, resulting in a large investment. Summary of the invention

[0003] Therefore, the present invention provides a wire outlet clamp, which can solve the technical problem that the DC brushless motor has three external drive wires and five internal drive wires, but the three-wire and five-wire cannot be used together in a vertical installation environment, and two sets of molds need to be opened, resulting in a large investment.

[0004] In order to solve the above problems, the present invention provides a wire outlet clamp, including a wire outlet clamp body, wherein a plurality of wire outlet holes are constructed on the wire outlet clamp body, and a part of the plurality of wire outlet holes are respectively provided with transformation structures, and the transformation structure has a dredging state and a sealing state. When the transformation structure is in the dredging state, the wire outlet hole provided with the transformation structure is dredged to enable the lead wire to pass through, and when the transformation structure is in the sealing state, the wire outlet hole provided with the transformation structure is sealed by the transformation structure.

[0005] In some embodiments, the transformation structure is elastic. When the lead wire is led out from the wire outlet hole provided with the transformation structure, the lead wire applies force to the transformation structure to cause the transformation structure to deform and then automatically switch to the unblocking state. When the lead wire is moved out of the wire outlet hole provided with the transformation structure, the transformation structure is reset under the action of its own elasticity and automatically switches to the sealing state.

[0006] In some embodiments, each of the transformation structures is integrally formed in each of the wire outlet holes provided with the transformation structure; and / or, the wire outlet clamp body includes a first wire clamp and a second wire clamp, the first wire clamp is formed with a plurality of first wire outlet grooves, the second wire clamp is formed with a plurality of second wire outlet grooves, the first wire clamp and the second wire clamp are assembled and spliced ​​to form the wire outlet clamp body, and the plurality of first wire outlet grooves are respectively combined with the plurality of second wire outlet grooves to form a plurality of wire outlet holes.

[0007] In some embodiments, a first plug-in portion is provided on the transformation structure, and a first plug-in fitting portion is provided on the hole wall of the wire outlet hole, and when the transformation structure is in the unblocking state, the first plug-in portion is plug-fitted with the first plug-in fitting portion; and / or, a second plug-in portion is provided on the transformation structure, and a second plug-in fitting portion is provided on the hole wall of the wire outlet hole, and when the transformation structure is in the sealing state, the second plug-in portion is plug-fitted with the second plug-in fitting portion.

[0008] The present invention also provides a wire outlet sealing structure, comprising a sealing sleeve and the aforementioned wire outlet clamp, wherein the wire outlet clamp body is located on the sealing sleeve.

[0009] In some embodiments, the sealing sleeve is used to be assembled between the housing and the end cover of the motor, the sealing sleeve includes a first annular vertical wall, one end of the housing has an insertion section, and the end cover has an annular side wall. After the sealing sleeve is assembled between the housing and the end cover of the motor, the first annular vertical wall is clamped between the outer annular surface of the insertion section and the inner annular surface of the annular side wall.

[0010] In some embodiments, the thickness of the first annular wall is h1, 0.17 mm ≤ h1 ≤ 0.23 mm; and / or the first annular wall is a flared structure, and the flaring angle of the first annular wall is a, a ≤ 5°.

[0011] In some embodiments, the sealing sleeve also includes an annular top wall, the first annular vertical wall is located on the outer circle of the annular top wall, the end cover has an end wall, the annular side wall is located on the end wall, and the annular top wall is pressed between the inner surface of the end wall and the end face of the insertion section.

[0012] In some embodiments, the thickness of the annular top wall is h2, and h2≤0.15 mm.

[0013] The present invention also provides a motor, comprising the aforementioned outlet wire sealing structure.

[0014] The present invention provides a wire outlet clamp, a wire outlet sealing structure, and a motor, which have the following beneficial effects:

[0015] When the outlet clamp of the present application is applied to a motor, and the number of outlet holes on the outlet clamp is five, and two of the outlet holes are provided with conversion structures, because the conversion structure has a clearing state and a sealing state, when the conversion structure is in the clearing state, the outlet holes provided with the conversion structure are cleared to allow the lead wires to pass through, and when the conversion structure is in the sealing state, the outlet holes provided with the conversion structure are sealed by the conversion structure. Therefore, when the motor has a five-wire requirement, the two conversion structures can be in the clearing state, then all five outlet holes are unobstructed, and the five lead wires can be led out from the five outlet holes respectively; when the motor has a three-wire requirement, the two conversion structures can be in the sealing state, then the two outlet holes are sealed, which is dustproof and waterproof, and the remaining three outlet holes are unobstructed, and the three lead wires can be led out from the three outlet holes respectively. That is, the outlet clamp of the present application can realize the universality of three or five wires in any installation environment, so only one set of molds needs to be opened during production, which can reduce investment and save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the first wire clamp and the second wire clamp of the wire outlet clamp in an embodiment of the present invention in a separated state;

[0018] Figure 2 for Figure 1 An enlarged schematic diagram of the A position of the first wire clamp of the wire outlet clamp according to the embodiment of the present invention;

[0019] Figure 3 A top view of the first wire clamp and the second wire clamp of the wire outlet clamp in the embodiment of the present invention in a separated state;

[0020] Figure 4 A side view of a first wire clamp and a second wire clamp of a wire outlet clamp according to an embodiment of the present invention in a separated state;

[0021] Figure 5 This is a schematic structural diagram of an outlet sealing structure according to an embodiment of the present invention;

[0022] Figure 6 An exploded schematic diagram of a motor according to an embodiment of the present invention;

[0023] Figure 7 is a schematic structural diagram of a motor according to an embodiment of the present invention;

[0024] Figure 8is a side view of a motor according to an embodiment of the present invention;

[0025] Fig. 9 A half-section view of a motor according to an embodiment of the present invention;

[0026] Fig.10 for Fig. 9 FIG. 1 is an enlarged schematic diagram of point B of the motor of an embodiment of the present invention.

[0027] The reference numerals are as follows:

[0028] 1. First wire clamp; 2. Second wire clamp; 3. First wire outlet groove; 4. Second wire outlet groove; 5. Wire outlet hole; 6. Conversion structure; 7. First plug-in part; 8. First plug-in mating part; 9. Second plug-in part; 10. Second plug-in mating part; 11. Sealing sleeve; 111. Annular top wall; 112. First annular vertical wall; 113. Second annular vertical wall; 12. Shell; 13. End cover; 131. End wall; 132. Annular side wall; 14. Insertion section; 15. Positioning column; 16. Positioning hole; 17. Hook; 18. Slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0033] See also Figures 1 to 10 As shown, according to an embodiment of the present invention, there is provided a wire outlet clamp, including a wire outlet clamp body, on which a plurality of wire outlet holes 5 are constructed, and a part of the plurality of wire outlet holes 5 are respectively provided with transformation structures 6, and the transformation structure 6 has a dredging state and a sealing state. When the transformation structure 6 is in the dredging state, the wire outlet holes 5 provided with the transformation structure 6 are dredged to enable the lead wires to pass through, and when the transformation structure 6 is in the sealing state, the wire outlet holes 5 provided with the transformation structure 6 are sealed by the transformation structure 6.

[0034] In this technical solution, when the outlet clamp is applied to the motor, and the number of outlet holes 5 on the outlet clamp is five, and two of the outlet holes 5 are provided with conversion structures 6, because the conversion structure 6 has a dredging state and a sealing state, when the conversion structure 6 is in the dredging state, the outlet hole 5 provided with the conversion structure 6 is dredged to allow the lead wire to pass through, and when the conversion structure 6 is in the sealing state, the outlet hole 5 provided with the conversion structure 6 is sealed by the conversion structure 6. Therefore, when the motor has a five-wire requirement, the two conversion structures 6 can be placed in the dredging state, then all five outlet holes 5 are unobstructed, and the five lead wires can be led out from the five outlet holes 5 respectively; when the motor has a three-wire requirement, the two conversion structures 6 can be placed in the sealing state, then the two outlet holes 5 are sealed, which is dustproof and waterproof, and the remaining three outlet holes 5 are unobstructed, and the three lead wires can be led out from the three outlet holes 5 respectively. That is, the outlet clamp of the present application can be used for three or five wires in any installation environment, so only one set of molds needs to be opened during production, which can reduce investment and save resources.

[0035] It should be noted that the wire outlet clamp body includes a first wire clamp 1 and a second wire clamp 2, a plurality of first wire outlet grooves 3 are formed on the first wire clamp 1, a plurality of second wire outlet grooves 4 are formed on the second wire clamp 2, the first wire clamp 1 and the second wire clamp 2 are assembled and spliced ​​to form the wire outlet clamp, and the plurality of first wire outlet grooves 3 are respectively combined with the plurality of second wire outlet grooves 4 to form a plurality of wire outlet holes 5. The wire outlet clamp body is designed to be formed by splicing two wire clamps, so that the transformation structure 6 can be conveniently arranged in the wire outlet hole 5. The first wire clamp 1 is configured with two spaced positioning holes 16 and a card slot 18, and the second wire clamp 2 is provided with two spaced positioning columns 15 and a card hook 17. When the first wire clamp 1 and the second wire clamp 2 are assembled to form the wire outlet clamp, the two positioning columns 15 are respectively inserted into the two positioning holes 16, and the two card hooks 17 are respectively engaged in the two card slots 18. The two positioning posts 15 and the two positioning holes 16 cooperate to mainly position the assembly of the first wire clamp 1 and the second wire clamp 2 , and the two hooks 17 and the two slots 18 cooperate to mainly fix the assembly of the first wire clamp 1 and the second wire clamp 2 .

[0036] As a specific implementation method, the transformation structure 6 is elastic. When the lead wire is led out from the wire outlet hole 5 provided with the transformation structure 6, the lead wire applies force to the transformation structure 6 to cause the transformation structure 6 to deform and then automatically switch to the unblocked state. When the lead wire is moved out of the wire outlet hole 5 provided with the transformation structure 6, the transformation structure 6 is reset under the action of its own elasticity and automatically switches to the sealed state.

[0037] It is understandable that, in the process of the lead wire being moved out of the outlet hole 5 provided with the conversion structure 6, the conversion structure 6 is reset under its own elastic action and automatically switches to a sealed state, indicating that the conversion structure 6 automatically forms a seal on the outlet hole 5 in the initial state. Then, when the motor is required to have three wires, it is only necessary to pass the three lead wires through the three outlet holes 5 where the conversion structure 6 is not provided, and the remaining two outlet holes 5 are sealed by the conversion structure 6 to achieve dustproof and waterproof. When the motor is required to have five wires, it is only necessary to align the five lead wires with the five outlet holes 5 and perform a simple threading action to achieve smooth lead-out of the five lead wires from the five outlet holes 5. That is, by designing the conversion structure 6 in this way, the present application only needs to perform a simple threading action to achieve smooth lead-out of three or five wires, whether the motor is required to have three wires or five wires, and can also ensure dustproof and waterproof, making the operation simpler and more convenient. Among them, the conversion structure 6 can be set on the first wire clamp 1 or on the second wire clamp 2.

[0038] See also Figure 1 and Figure 2As shown, the first wire clamp 1 has a tilted portion, which is a transformation structure 6, and the first wire outlet groove 3 at the tilted portion extends to the tilted portion. The first wire clamp 1 is also constructed with a plurality of slots distributed at intervals, and each first wire outlet groove 3 is respectively located between two adjacent slots. The second wire clamp 2 has a plurality of partitions, and a second wire outlet groove 4 is formed between two adjacent partitions. After the first wire clamp 1 and the second wire clamp 2 are assembled to form a wire outlet clamp, each partition is respectively inserted into each slot, and the first wire outlet groove 3 and the second wire outlet groove 4 are combined to form a wire outlet hole 5. The tilted portion has an end face and two side planes, and the second wire clamp 2 has a matching plane, which is located between two adjacent partitions. In the initial state, the tilted portion has its end face in contact with the matching plane on the second wire clamp 2, and the two side planes are respectively in contact with two adjacent partitions, thereby ensuring that the tilted portion seals the wire outlet hole 5 in the initial state, and further ensuring that the transformation structure 6 seals the wire outlet hole 5 in the initial state. After the first wire clamp 1 and the second wire clamp 2 are assembled to form the wire outlet clamp, a total of five wire outlet holes 5 are formed, and two of the five wire outlet holes 5 have warping portions. It can be understood that, in the process of the lead wire being led out from the wire outlet hole 5 provided with the warping portion, the lead wire applies force to the warping portion so that the warping portion is flattened and the wire outlet hole 5 is automatically unblocked, and in the process of the lead wire being moved out from the wire outlet hole 5 provided with the warping portion, the warping portion warps under its own elasticity and automatically seals the wire outlet hole 5.

[0039] See also Figure 1 and Figure 2 As shown, each conversion structure 6 is integrally formed in each outlet hole 5 provided with the conversion structure 6. Since the conversion structure 6 needs to be deformed by force, if the conversion structure 6 is assembled in the outlet hole 5 in a separate form, it is easy to change its position after the conversion structure 6 is deformed by force for many times, resulting in the conversion structure 6 not being able to dredge the outlet hole 5 well in the dredging state and not being able to seal the outlet hole 5 well in the sealing state. When the conversion structure 6 is integrally formed in the outlet hole 5, the situation that it is easy to change its position after being deformed by force for many times can be effectively improved.

[0040] See also Figures 2 to 4 As shown, a first plug-in portion 7 is provided on the transformation structure 6, and a first plug-in fitting portion 8 is provided on the hole wall of the outlet hole 5. When the transformation structure 6 is in a cleared state, the first plug-in portion 7 is plug-fitted with the first plug-in fitting portion 8.

[0041] In this embodiment, after the lead-out wire is led out from the wire outlet hole 5 provided with the transformation structure 6, the lead-out wire flattens the transformation structure 6, so that the transformation structure 6 switches to the unblocking state, and at the same time, the first plug-in portion 7 is plugged and matched with the first plug-in matching portion 8. The plug-in matching of the first plug-in portion 7 and the first plug-in matching portion 8 has a restraining effect, which helps the transformation structure 6 to maintain a stable state in the unblocking state. It should be noted that one of the first plug-in portion 7 and the first plug-in matching portion 8 can be a plug post, and the other can be a socket.

[0042] See also Figures 2 to 4 As shown, a second plug-in portion 9 is provided on the transformation structure 6, and a second plug-in fitting portion 10 is constructed on the hole wall of the outlet hole 5. When the transformation structure 6 is in a sealed state, the second plug-in portion 9 is plugged into the second plug-in fitting portion 10.

[0043] In this technical solution, when the lead wire is removed from the outlet hole 5 provided with the conversion structure 6, the conversion structure 6 automatically resets and tilts up under the action of its own elasticity, so that the conversion structure 6 switches to a sealed state, and at the same time, the second plug-in portion 9 is plugged into the second plug-in matching portion 10. The plug-in matching of the second plug-in portion 9 and the second plug-in matching portion 10 has a restraining effect, which helps the conversion structure 6 to maintain a stable state in the sealed state. It should be noted that one of the second plug-in portion 9 and the second plug-in matching portion 10 can be a plug post, and the other can be a plug socket.

[0044] The present invention also provides an outlet cable sealing structure, comprising a sealing sleeve 11 and the aforementioned outlet cable clamp, wherein the first cable clamp 1 is on the sealing sleeve 11, and the second cable clamp 2 is assembled on the first cable clamp 1. Preferably, the first cable clamp 1 is integrally formed on the sealing sleeve 11, and when the second cable clamp 2 is assembled on the first cable clamp 1, it is equivalent to that the entire outlet cable clamp can be directly fixed without the aid of additional means, thereby making the fixing of the outlet cable clamp more convenient. Among them, the sealing sleeve 11, the first cable clamp 1 and the second cable clamp 2 are all formed by injection molding of nylon material.

[0045] See also Figures 5 to 7 , Fig. 9 and Fig.10 As shown, the sealing sleeve 11 is used to be assembled between the housing 12 and the end cover 13 of the motor. The sealing sleeve 11 includes a first annular vertical wall 112. One end of the housing 12 has an insertion section 14. The end cover 13 has an annular side wall 132. After the sealing sleeve 11 is assembled between the housing 12 and the end cover 13 of the motor, the first annular vertical wall 112 is clamped between the outer annular surface of the insertion section 14 and the inner annular surface of the annular side wall 132.

[0046] In this embodiment, after the end cover 13 of the motor is buckled onto the plug-in section 14 of the motor housing 12, there will still be a small gap between the end cover 13 and the housing 12. In order to make the motor have better waterproof performance in a harsh application environment (such as IPX5), glue is usually applied at the gap, but glue application takes a long time and has low production efficiency. The sealing sleeve 11 designed in this application only needs to be sleeved on the periphery of the plug-in section 14 of the housing 12, and then the end cover 13 is buckled on, so that the first annular vertical wall 112 of the sealing sleeve 11 will be clamped between the outer annular surface of the plug-in section 14 and the inner annular surface of the annular side wall 132 of the end cover 13, so that the gap between the end cover 13 and the housing 12 is eliminated, achieving a sealing and waterproof effect. Compared with the sealing method of applying glue, the sealing method of this application is obviously easier to operate and more efficient. At the same time, it can also increase the tightness of the end cover 13 and the housing 12 and improve the pulling force. The housing 12 is provided with a notch, and after the sealing sleeve 11 is sleeved on the insertion section 14 of the housing 12, the outlet clamp is snapped into the notch. It is understandable that when the stator assembly of the motor is an injection-molded stator, the injection-molded shell of the injection-molded stator is the housing of the motor. At this time, the sealing sleeve 11 of the present application is sleeved on the insertion section of the injection-molded shell, and then the end cover 13 is buckled on it, which can also play the role of sealing the end cover 13 and the injection-molded shell.

[0047] As a specific implementation, the thickness of the first annular wall 112 is h1, 0.17mm≤h1≤0.23mm. In order to make the first annular wall 112 play a sealing role between the end cover 13 and the shell 12, while not causing the first annular wall 112 to have a significant impact on the assembly between the end cover 13 and the shell 12, it is necessary to reasonably design the thickness of the first annular wall 112. Experiments show that when 0.17mm≤h1≤0.23mm, it can achieve the goal of not affecting the assembly between the end cover 13 and the shell 12, and can ensure that the first annular wall 112 is tightly fitted between the annular side wall 132 of the end cover 13 and the outer annular surface of the insertion section 14, thereby ensuring the sealing effect.

[0048] More specifically, the first annular vertical wall 112 is a flared structure, and the flaring angle of the first annular vertical wall 112 is a, and a≤5°.

[0049] In this technical solution, when the first annular wall 112 is a flared structure, the sealing sleeve 11 is easier to be mounted on the insertion section 14 of the shell 12, and the operation efficiency is high. At the same time, after the first annular wall 112 is mounted on the periphery of the insertion section 14, because the first annular wall 112 is a flared structure, the end cover 13 is easier to press the first annular wall 112 during the process of being buckled onto the shell 12, so that the end cover 13, the sealing sleeve 11 and the shell 12 are more likely to form a tight fit, and the sealing effect is better. Experiments show that when the flaring angle of the first annular wall 112 is less than or equal to 5°, it can not only achieve the effect of not affecting the assembly between the end cover 13 and the shell 12, but also ensure that the first annular wall 112 is tightly fitted between the annular side wall 132 of the end cover 13 and the outer annular surface of the insertion section 14, thereby ensuring the sealing effect.

[0050] See also Figures 5 to 7 , Fig. 9 and Fig.10 As shown, the sealing sleeve 11 also includes an annular top wall 111, a first annular vertical wall 112 is located on the outer ring of the annular top wall 111, the end cover 13 has an end wall 131, and an annular side wall 132 is located on the end wall 131. After the sealing sleeve 11 is assembled between the motor housing 12 and the end cover 13, the annular top wall 111 is pressed between the inner surface of the end wall 131 and the end face of the insertion section 14.

[0051] In this embodiment, when the annular top wall 111 is pressed between the inner surface of the end wall 131 and the end surface of the insertion section 14, the annular top wall 111 can also form a seal between the end wall 131 of the end cover 13 and the end surface of the insertion section 14, thereby further improving the sealing effect between the end cover 13 and the housing 12. Preferably, the sealing sleeve 11 also includes a second annular vertical wall 113 located in the inner circle of the annular top wall 111. The second annular vertical wall 113 can make the sealing sleeve 11 more stable when it is sleeved on the insertion section 14 of the housing 12. When the sealing sleeve 11 also includes the second annular vertical wall 113, a plurality of avoidance grooves are formed on the second annular vertical wall 113 and the annular top wall 111. These avoidance grooves are used to avoid the control board so that the control board can be smoothly fixed on the stator assembly.

[0052] See also Fig. 9 and Fig.10As shown, the thickness of the annular top wall 111 is h2, and h2≤0.15mm. If the annular top wall 111 is too thick, the gap between the end cover 13 and the housing 12 of the motor in the axial extension direction will be larger due to the thicker annular top wall 111, which will cause the end cover 13 to be easily loosened relative to the housing 12, resulting in abnormal shaft noise. Experiments show that when the thickness of the annular top wall 111 is less than or equal to 0.15mm, the annular top wall 111 has a thinner thickness while ensuring sealing, and will not cause the gap between the end cover 13 and the housing 12 of the motor in the axial extension direction to be too large, and the end cover 13 is not easy to loosen relative to the housing 12.

[0053] The present invention also provides a motor, comprising the aforementioned outlet clamp, wherein the motor of the present invention is particularly a brushless DC motor.

[0054] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A wire outlet clamp, characterized in that: The invention comprises a wire outlet clamp body, wherein a plurality of wire outlet holes (5) are constructed on the wire outlet clamp body, and a part of the plurality of wire outlet holes (5) are respectively provided with a conversion structure (6), wherein the conversion structure (6) has a clearing state and a sealing state, wherein when the conversion structure (6) is in the clearing state, the wire outlet hole (5) provided with the conversion structure (6) is cleared to allow the lead wire to pass through, and when the conversion structure (6) is in the sealing state, the wire outlet hole (5) provided with the conversion structure (6) is sealed by the conversion structure (6).

2. The outlet clamp according to claim 1, characterized in that: The conversion structure (6) has elasticity. When the lead wire is led out from the wire outlet hole (5) provided with the conversion structure (6), the lead wire applies force to the conversion structure (6) so that the conversion structure (6) is deformed and automatically switches to the unblocking state. When the lead wire is removed from the wire outlet hole (5) provided with the conversion structure (6), the conversion structure (6) is reset under the action of its own elasticity and automatically switches to the sealing state.

3. The outlet clamp according to claim 2, characterized in that: Each of the conversion structures (6) is integrally formed in each of the wire outlet holes (5) provided with the conversion structure (6); and / or, the wire outlet clamp body comprises a first wire clamp (1) and a second wire clamp (2), the first wire clamp (1) is formed with a plurality of first wire outlet grooves (3), the second wire clamp (2) is formed with a plurality of second wire outlet grooves (4), the first wire clamp (1) and the second wire clamp (2) are assembled and spliced ​​to form the wire outlet clamp body, and the plurality of first wire outlet grooves (3) are respectively combined with the plurality of second wire outlet grooves (4) to form a plurality of wire outlet holes (5).

4. The outlet clamp according to claim 1, characterized in that: The conversion structure (6) is provided with a first plug-in portion (7), and the hole wall of the outlet hole (5) is provided with a first plug-in matching portion (8); when the conversion structure (6) is in the unblocking state, the first plug-in portion (7) is plug-matched with the first plug-in matching portion (8); and / or, the conversion structure (6) is provided with a second plug-in portion (9), and the hole wall of the outlet hole (5) is provided with a second plug-in matching portion (10); when the conversion structure (6) is in the sealing state, the second plug-in portion (9) is plug-matched with the second plug-in matching portion (10).

5. A wire outlet sealing structure, characterized in that: It comprises a sealing sleeve (11) and the outlet clamp according to any one of claims 1 to 4, wherein the outlet clamp body is located on the sealing sleeve (11).

6. The outlet sealing structure according to claim 5, characterized in that: The sealing sleeve (11) is used to be assembled between a housing (12) and an end cover (13) of a motor. The sealing sleeve (11) comprises a first annular vertical wall (112). One end of the housing (12) has an insertion section (14). The end cover (13) has an annular side wall (132). After the sealing sleeve (11) is assembled between the housing (12) and the end cover (13) of the motor, the first annular vertical wall (112) is clamped between an outer annular surface of the insertion section (14) and an inner annular surface of the annular side wall (132).

7. The outlet sealing structure according to claim 6, characterized in that: The thickness of the first annular vertical wall (112) is h1, 0.17mm≤h1≤0.23mm; and / or the first annular vertical wall (112) is a flared structure, and the flaring angle of the first annular vertical wall (112) is a, a≤5°.

8. The outlet sealing structure according to claim 6, characterized in that: The sealing sleeve (11) further comprises an annular top wall (111), the first annular vertical wall (112) is located on the outer ring of the annular top wall (111), the end cover (13) has an end wall (131), the annular side wall (132) is located on the end wall (131), and the annular top wall (111) is pressed between the inner surface of the end wall (131) and the end surface of the insertion section (14).

9. The outlet sealing structure according to claim 8, characterized in that: The thickness of the annular top wall (111) is h2, and h2≤0.15 mm.

10. A motor, characterized in that: It comprises the outlet sealing structure as described in any one of claims 5 to 9.

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