Stator end plate and motor

Abstract

The utility model discloses a stator end plate and a motor, and the stator end plate comprises a supporting plate, two first wire abutting columns which are arranged on the upper surface of the supporting plate at intervals along the circumferential direction and extend along the axial direction, and limiting columns which are arranged on the upper surface of the supporting plate at intervals along the circumferential direction, and the limiting columns are located in the first wire abutting columns. A containing groove used for containing a leading-out wire is defined between the two first wire abutting columns, the containing groove is through in the radial direction, and at least one of the two first wire abutting columns is elastic. According to the utility model, through the arrangement of the elastic first wire abutting column, soft supporting and buffering effects on the outgoing line can be realized, the bending amplitude of the outgoing line is reduced, the risk of breaking of the outgoing line is reduced, and the service life of the outgoing line and the service life of the motor are prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, and in particular relates to a stator end plate and a motor. Background Art

[0002] During the operation of the power tool, the power tool will vibrate greatly due to the unbalanced friction between the power tool itself and the material. The motor is the core component that drives the power tool to rotate. It includes a stator and a rotor. The stator consists of three parts: a stator core, a stator winding, and a stator end plate. In order to guide the current generated by the stator winding to the external circuit, the stator also includes a lead wire. In order to facilitate the fixed storage of the lead wire, a receiving groove is provided on the stator end plate.

[0003] Since most existing stator end plates are injection-molded plastic parts, when the power tool vibrates greatly, the lead wires will swing due to the vibration and bend repeatedly at the receiving groove of the stator end plate. After working for a long time, there is a risk of the lead wires breaking.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a stator end plate and a motor, which can reduce the bending amplitude of the lead wire, reduce the risk of the lead wire breaking, and increase the service life of the lead wire and the motor.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A stator end plate, the stator end plate includes a support plate and two first abutment posts arranged on the upper surface of the support plate along the circumferential direction and extending along the axial direction. The stator end plate also includes a limiting post arranged on the upper surface of the support plate along the circumferential direction. The limiting post is located within the first abutment post. A receiving groove for accommodating a lead wire is formed between the two first abutment posts. The receiving groove penetrates radially, and at least one of the two first abutment posts is elastic.

[0008] In one or more embodiments of the present invention, the first abutment post includes a main body fixedly mounted on the support plate and an elastic member covering the outside of the main body.

[0009] In one or more embodiments of the present invention, the elastic member includes a main body and a bent portion bent toward the receiving groove, a first receiving cavity is formed in the main body, and the body is at least partially located in the first receiving cavity.

[0010] In one or more embodiments of the present invention, a second receiving cavity communicating with the first receiving cavity is formed in the bending portion, and the body portion is located in the second receiving cavity; and / or,

[0011] The main body is provided with a through slot, and the elastic member is provided with a connecting portion penetrating the through slot.

[0012] In one or more embodiments of the present invention, the elastic member includes a first elastic member and a second elastic member that are arranged opposite to each other, and the first elastic member and / or the second elastic member can be detachably mounted on the body.

[0013] In one or more embodiments of the present invention, a through slot is provided on the main body, and a buckle matching with the through slot is provided on the first elastic member and / or the second elastic member.

[0014] In one or more embodiments of the present invention, the receiving groove includes a first receiving portion close to the support plate and a second receiving portion away from the support plate, the circumferential length of the first receiving portion and the axial height of the first receiving portion are both greater than the wire diameter of the lead wire, and the circumferential length of the second receiving portion is less than the wire diameter of the lead wire.

[0015] In one or more embodiments of the present invention, at least a portion of the edge of the first abutment post is provided with a circular chamfer.

[0016] In one or more embodiments of the present invention, the stator end plate further comprises second abutment posts circumferentially spaced on the upper surface of the support plate, the second abutment posts extending axially, and two first abutment posts being located between two adjacent second abutment posts.

[0017] Another specific embodiment of the present invention provides a technical solution as follows:

[0018] A motor comprises the stator end plate mentioned above.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model provides a stator end plate and a motor. By arranging a first elastic wire-abutting column, the lead wires can be softly supported and buffered. The bending amplitude of the lead wires can be reduced, the risk of lead wire breakage is reduced, and the service life of the lead wires and the motor is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the stator end plate in the first embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the stator end plate in the first embodiment of the utility model;

[0024] Figure 3 This is a schematic cross-sectional structural diagram of the elastic member in the first embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the explosion structure of the elastic member in the second embodiment of the utility model;

[0026] Figure 5 This is a partial structural schematic diagram of the electrode in the third embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, 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, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.

[0031] Reference Figure 1As shown, the stator end plate in this embodiment includes a support plate 1 and two first abutment posts 2 arranged on the upper surface of the support plate 1 at intervals along the circumferential direction and extending along the axial direction. The stator end plate also includes a limiting post 4 arranged on the upper surface of the support plate 1 at intervals along the circumferential direction. The limiting post 4 is located within the first abutment posts 2. The two first abutment posts 2 are enclosed to form a space for receiving the lead-out line 6 (refer to Figure 5 The receiving groove 3 is radially penetrated, and at least one of the two first abutment posts 2 is elastic. When the lead wire 6 is received on the stator end plate, the lead wire 6 is limited outside the limiting post 4 by the limiting post 4. Exemplarily, the two first abutment posts 2 in this embodiment are both elastic and the lead wire 6 passes through the receiving groove 3. The lead wire 6 swings with the vibration of the power tool in use. Although the portion of the lead wire 6 located in the receiving groove 3 will be repeatedly bent, the first abutment post 2 is elastic and can provide soft support and buffering for the lead wire 6. The bending amplitude of the lead wire 6 will become smaller, thereby reducing the risk of the lead wire 6 breaking and increasing the service life of the lead wire 6.

[0032] In order to make the first abutment post 2 elastic, refer to Figure 2 As shown, the first line-retaining column 2 in this embodiment includes a main body 21 fixedly mounted on the support plate 1 and an elastic member 22 coated outside the main body 21. Among them, the main body 21 can be a plastic part integrally formed with the base plate, and the elastic member 22 can be a rubber body formed by secondary injection molding. Of course, the present application is not limited to this. In other embodiments, the first line-retaining column 2 can be a structure directly made of elastic materials such as rubber. The structure can be integrally formed on the support plate 1 or separately provided from the support plate 1, thereby playing a role of soft support and buffering for the lead-out wire 6.

[0033] Specifically, refer to Figure 2 , Figure 3 As shown, the elastic member 22 in this embodiment includes a main body 221 and a bent portion 222 bent toward the receiving groove 3, a first receiving cavity 2210 is formed in the main body 221, and the body 21 is at least partially located in the first receiving cavity 2210. Exemplarily, the main body 221 in this embodiment includes a mounting portion 211 connected to the support plate 1, and the mounting portion 211 is received in the first receiving cavity 2210, so that the elastic member 22 is installed on the body 21. When the lead wire 6 is located in the receiving groove 3, the lead wire 6 is repeatedly bent, and the outer wall of the lead wire 6 contacts the outer wall of the elastic member 22, and the elastic member 22 provides soft support for the lead wire 6, and the bending amplitude of the lead wire 6 can be reduced.

[0034] Preferably, in order to better fix the elastic member 22 on the body 21, refer to Figure 2 , Figure 3As shown, the main body 21 in this embodiment also includes a fixing portion 212 connected to the mounting portion 211 and bent, and a second receiving cavity 2220 connected to the first receiving cavity 2210 is formed in the bent portion 222. The mounting portion 211 is located in the first receiving cavity 2210, and the fixing portion 212 is located in the second receiving cavity 2220.

[0035] Preferably, in order to better fix the elastic member 22 on the body 21, refer to Figure 2 , Figure 3 As shown, in this embodiment, a through slot 2111 is provided on the body 21, and a connecting portion 2211 penetrating the through slot 2111 is provided in the elastic member 22. The through slot 2111 can be provided on the mounting portion 211 or the fixing portion 212, and the connecting portion 2211 can be provided in the first receiving cavity 2210 or the second receiving cavity 2220. Since the connecting portion 2211 is integrally formed in the elastic member 22, when the connecting portion 2211 passes through the through slot 2111, the elastic member 22 can be firmly installed on the body 21.

[0036] In order to accommodate the lead wire 6 in the receiving groove 3, refer to Figure 1 Combined with the third embodiment Figure 5 As shown, the receiving groove 3 in this embodiment includes a first receiving portion 31 close to the support plate 1 and a second receiving portion 32 away from the support plate 1, the length of the first receiving portion 31 along the circumferential direction and the height of the first receiving portion 31 along the axial direction are both greater than the wire diameter of the lead wire 6, and the length of the second receiving portion 32 along the circumferential direction is less than or equal to the wire diameter of the lead wire 6. Since there are generally multiple lead wires 6, when the length of the first receiving portion 31 along the circumferential direction and the height of the first receiving portion 31 along the axial direction are both greater than the wire diameter of the lead wire 6, multiple lead wires 6 can be accommodated in the first receiving portion 31. Since the length of the second receiving portion 32 along the circumferential direction is less than the wire diameter of the lead wire 6, and the first abutment column 2 is elastic, each lead wire 6 can be confined in the first receiving portion 31.

[0037] Preferably, refer to Figure 2 As shown, the edge of the first abutment post 2 in this embodiment is at least partially provided with a circular arc chamfer 200. By optimizing the structure of the first abutment post 2, when the lead-out wire 6 is repeatedly bent and the contact position with the first abutment post 2 is at the circular arc chamfer 200, the contact area between the bent lead-out wire 6 and the first abutment post 2 becomes larger, and the bending amplitude at the bending point of the first abutment post 2 is reduced, thereby reducing the risk of the lead-out wire 6 breaking and increasing the service life of the lead-out wire 6.

[0038] In addition, refer to Figure 2As shown, the stator end plate in this embodiment further includes second abutment posts 5 arranged on the upper surface of the support plate 1 at intervals along the circumferential direction, the second abutment posts 5 are extended along the axial direction, and the two first abutment posts 2 are located between two adjacent second abutment posts 5. According to this design, the lead wire 6 can be wound around the second abutment posts 5 to better accommodate the lead wire 6 on the stator end plate.

[0039] Embodiment 2:

[0040] The support plate 1 and the body 21 in this embodiment are completely the same as those in the first embodiment, except that the structure of the elastic member 22 is different.

[0041] Reference Figure 4 As shown, the elastic member 22 in this embodiment includes a first elastic member 223 and a second elastic member 224 arranged opposite to each other. Exemplarily, the first elastic member 223 is detachably mounted on the body 21, and the second elastic member 224 is detachably mounted on the first elastic member 223. The detachable mounting method can be mounted by snapping or by an external connector.

[0042] Specifically, in order to detachably mount the first elastic member 223 on the body 21, refer to Figure 4 Combined with the embodiment 1 Figure 2 As shown, the body 21 in this embodiment is provided with a first through slot, and the first elastic member 223 is provided with a first buckle 2231 matched with the first through slot. Of course, the present application is not limited thereto, and in other embodiments, both the first elastic member 223 and the second elastic member 224 can be detachably mounted on the body 21, that is, the body 21 is provided with a first through slot and a second through slot, the first elastic member 223 is provided with a first buckle 2231 matched with the first through slot, and the second elastic member 224 is provided with a second buckle matched with the second through slot. The first through slot and the second through slot can be connected or independently arranged.

[0043] Embodiment three:

[0044] Reference Figure 3 As shown, the motor in this embodiment includes the stator end plate as described above. By arranging a first elastic abutment column 2 on the stator end plate, the lead wire 6 can be softly supported and buffered, the bending amplitude of the lead wire 6 will be reduced, the risk of the lead wire 6 breaking is reduced, the service life of the lead wire 6 is increased, and the service life of the motor is thereby increased.

[0045] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0046] The utility model provides a stator end plate and a motor. By arranging a first elastic wire-abutting column, the lead wires can be softly supported and buffered. The bending amplitude of the lead wires can be reduced, the risk of lead wire breakage is reduced, and the service life of the lead wires and the motor is prolonged.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stator end plate, characterized in that: The stator end plate comprises a support plate (1) and two first abutment posts (2) which are arranged on the upper surface of the support plate (1) at intervals along the circumferential direction and extend in the axial direction. The stator end plate also comprises a limiting post (4) which is arranged on the upper surface of the support plate (1) at intervals along the circumferential direction. The limiting post (4) is located inside the first abutment post (2). A receiving groove (3) for receiving a lead wire (6) is formed between the two first abutment posts (2). The receiving groove (3) is radially penetrated. At least one of the two first abutment posts (2) has elasticity.

2. The stator end plate according to claim 1, characterized in that: The first abutment column (2) comprises a main body (21) fixedly mounted on the support plate (1) and an elastic member (22) covering the outside of the main body (21).

3. The stator end plate according to claim 2, characterized in that: The elastic member (22) comprises a main body portion (221) and a bent portion (222) bent toward the receiving groove (3); a first receiving cavity (2210) is formed in the main body portion (221); and the body (21) is at least partially located in the first receiving cavity (2210).

4. The stator end plate according to claim 3, characterized in that: A second receiving cavity (2220) communicating with the first receiving cavity (2210) is formed in the bent portion (222), and a portion of the body (21) is located in the second receiving cavity (2220); and / or, The main body (21) is provided with a through slot (2111), and the elastic member (22) is provided with a connecting portion (2211) penetrating the through slot (2111).

5. The stator end plate according to claim 2, characterized in that: The elastic member (22) comprises a first elastic member (223) and a second elastic member (224) which are arranged opposite to each other, and the first elastic member (223) and / or the second elastic member (224) can be detachably mounted on the body (21).

6. The stator end plate according to claim 5, characterized in that: The body (21) is provided with a through slot (2111), and the first elastic member (223) and / or the second elastic member (224) are provided with a buckle that matches the through slot (2111).

7. The stator end plate according to claim 1, characterized in that: The receiving groove (3) comprises a first receiving portion (31) close to the support plate (1) and a second receiving portion (32) away from the support plate (1); the length of the first receiving portion (31) along the circumferential direction and the height of the first receiving portion (31) along the axial direction are both greater than the wire diameter of the lead wire (6); and the length of the second receiving portion (32) along the circumferential direction is less than the wire diameter of the lead wire (6).

8. The stator end plate according to claim 1, characterized in that: At least part of the edge of the first abutment post (2) is provided with a circular chamfer (200).

9. The stator end plate according to claim 1, characterized in that: The stator end plate further comprises second abutment posts (5) arranged at intervals along the circumferential direction on the upper surface of the support plate (1); the second abutment posts (5) are arranged to extend along the axial direction, and the two first abutment posts (2) are located between two adjacent second abutment posts (5).

10. A motor, characterized in that: It comprises the stator end plate according to any one of claims 1 to 9.

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