A stator and electric machine

Abstract

The utility model provides a kind of stator and motor, including core and the framework being set on the core, the framework is provided with first terminal seat and second terminal seat, the first terminal seat is used to insert and set puncture terminal, the second terminal seat is used to insert and set welding terminal, the first terminal seat and the second terminal seat are symmetrically arranged about the center of the core, so that stator whether it is using puncture terminal, or using welding terminal, same winding procedure and injection mold can be used.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a stator and a motor. Background Technology

[0002] The stator frame of an electric motor often has terminal blocks for winding connections. Existing technologies include pierced terminal blocks and welded terminal blocks. For motors using pierced terminals for wiring, pierced terminal blocks are provided on the frame; for motors using welded connections, welded terminal blocks are provided. Different frame types and wiring methods often require different winding procedures and injection molds, which increases production complexity and cost.

[0003] How to make the skeleton compatible with both pierced terminals and welded terminals, so that the same winding process and injection mold can be used, is a technical problem that urgently needs to be solved. Utility Model Content

[0004] Therefore, this utility model provides a stator and motor that can use the same winding process and injection mold, whether using pierced terminals or welded terminals.

[0005] The present invention provides a stator comprising an iron core and a frame disposed on the iron core. The frame is provided with a first terminal seat and a second terminal seat. The first terminal seat is used to insert a piercing terminal, and the second terminal seat is used to insert a welding terminal. The first terminal seat and the second terminal seat are symmetrically arranged about the center of the iron core.

[0006] In some embodiments, the frame is further provided with a first common terminal block and a second common terminal block, the first common terminal block being used to insert a piercing common terminal, and the second common terminal block being used to insert a welding common terminal; the first common terminal block and the second common terminal block are symmetrically arranged about the center of the iron core.

[0007] In some embodiments, the second common terminal block is the same as the second terminal block, and the welding common terminal is the same as the welding terminal.

[0008] In some embodiments, a power supply mounting bracket is provided on the frame.

[0009] In some embodiments, a piercing terminal is inserted into the first terminal block, or a welding terminal is inserted into the second terminal block.

[0010] In some embodiments, when a piercing terminal is provided, the piercing terminal includes a piercing portion, the piercing portion including two paint strips spaced apart, a piercing groove being formed between the two paint strips, and the sidewall of the piercing groove being provided with protrusions.

[0011] In some embodiments, when a welding terminal is provided, the welding terminal includes a welding portion, the welding portion includes a welding platform and a clamping plate, the clamping plate is movable toward or away from the clamping plate, the welding platform is provided with a protrusion, and the clamping plate is provided with a groove opposite to the protrusion, and when the clamping plate is in contact with the welding platform, the protrusion is completely located in the groove.

[0012] In some embodiments, the protrusion is elongated and has a groove that passes through the protrusion along its width.

[0013] In some embodiments, when the protrusion is located within the groove, a gap is formed between the outer wall of the protrusion and the inner wall of the groove.

[0014] This utility model provides an electric motor, including the aforementioned stator.

[0015] This invention, by setting piercing terminal seats and welding terminal seats in the skeleton, and symmetrically arranging the piercing terminal seats and welding terminal seats about the center of the iron core, enables the winding and injection molding of the stator to be achieved with only one winding program and injection mold. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the stator core with a frame according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the iron core of this utility model being provided with a first terminal block, a second terminal block, and a power supply fixing block;

[0019] Figure 3 This is a welding terminal according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the welding terminal being disposed on the second terminal block according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the iron core with windings in an embodiment of this utility model;

[0022] Figure 6This is a schematic diagram of the piercing terminal according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the piercing terminal being disposed on the first terminal block according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of piercing the common terminal block according to an embodiment of the present invention;

[0025] The attached figures are labeled as follows:

[0026] 1. First terminal block; 101. First common terminal block; 102. Piercing terminal; 103. Piercing common terminal; 104. Piercing part; 105. Piercing groove; 106. Paint stripper; 107. Protruding thorn; 108. Piercing mating part; 109. Piercing mounting part; 2. Second terminal block; 201. Second common terminal block; 202. Welding terminal; 203. Welding common terminal; 204. Welding platform; 205. Clamping piece; 206. Protrusion; 207. Groove; 208. Welding mating part; 209. Welding mounting part; 3. Iron core; 4. Frame; 5. Power supply fixing base. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0031] See also Figure 1-8 As shown, the stator includes an iron core 3 and a frame 4 disposed on the iron core 3. A first terminal seat 1 and a second terminal seat 2 are disposed on the frame 4. The first terminal seat 1 is used to insert a piercing terminal 102, and the second terminal seat 2 is used to insert a welding terminal 202. The first terminal seat 1 and the second terminal seat 2 are symmetrically arranged about the center of the iron core 3.

[0032] The frame 4 of this application is simultaneously provided with a first terminal seat 1 for piercing the terminal 102 and a second terminal seat 2 for welding the terminal 202. The frame 4 is suitable for both piercing the terminal 102 and welding the terminal 202. It has strong versatility. Since the first terminal seat 1 and the second terminal seat 2 are symmetrically arranged about the center of the iron core 3, when one stator uses the piercing terminal 102, one winding program and injection mold are used; when another stator uses the welding terminal 202, only the stator needs to be rotated 180° to use the same winding program and injection mold.

[0033] Switching between different wiring methods eliminates the need to debug the winding program and change the injection mold, thereby reducing motor development costs. It also avoids the risk of molding compound running into the terminal block during injection, affecting the terminal crimping quality. The power cord is tied to the power cord fixing seat, which reduces the risk of poor terminal contact caused by motor vibration, effectively improving stator production efficiency and product quality.

[0034] Preferred, such as Figure 2As shown, the frame 4 is also provided with a first common terminal block 101 and a second common terminal block 201. The first common terminal block 101 is used to insert a piercing common terminal 103, and the second common terminal block 201 is used to insert a welding common terminal 203. The first common terminal block 101 and the second common terminal block 201 are symmetrically arranged about the center of the iron core 3.

[0035] By symmetrically arranging the first common terminal block 101 and the second common terminal block 201 about the iron core 3, the versatility of the winding process and injection mold is further improved, which is conducive to improving production efficiency and reducing production costs.

[0036] Preferred, such as Figure 2 and Figure 3 As shown, the second common terminal block 201 is the same as the second terminal block 2, and the welding common terminal 203 is the same as the welding terminal 202.

[0037] By making the second common terminal block 201 the same as the second terminal block 2, and the welding common terminal 203 and welding terminal 202 the same, the types of parts are further reduced, which helps to reduce production costs and improve production efficiency.

[0038] Specifically, the three conductors of the three-phase winding are first short-circuited. Since the welding after the three conductors are short-circuited is the same as the welding of a single conductor, the same welding terminal 202 as the welding of a single conductor can be used for welding. This makes the welding common terminal 203 the same as the welding terminal 202, and the second common terminal block 201 the same as the second terminal block 2.

[0039] Preferred, such as Figure 2 As shown, a power supply mounting base 5 is provided on the frame 4.

[0040] By setting a power supply mounting bracket 5 on the frame 4, the power cord can be electrically connected to the stator through the power supply mounting bracket 5, which is very safe and convenient.

[0041] Preferred, such as Figure 2 As shown, a piercing terminal 102 is inserted into the first terminal block 1, or a welding terminal 202 is inserted into the second terminal block 2.

[0042] Preferred, such as Figure 6 , Figure 7 and Figure 8 As shown, when a piercing terminal 102 is provided, the piercing terminal 102 includes a piercing portion 104, the piercing portion 104 includes two paint stripping sheets 106 spaced apart, a piercing groove 105 is formed between the two paint stripping sheets 106, and the sidewall of the piercing groove 105 is provided with protrusions 107.

[0043] By providing protrusions 107 on the sidewall of the piercing groove 105, the protrusions 107 can better pierce the enameled wire when it is inserted into the piercing groove 105, which is beneficial to improving the stability of conductivity.

[0044] Furthermore, the piercing terminal 102 is provided with a piercing mating part 108, a piercing mounting part 109, and a paint stripping sheet 106. The piercing mounting part 109 mounts the piercing terminal 102 into the first terminal block 1, and it is not easily removed after installation. The paint stripping sheet 106 and the protrusions 107 can scratch the paint on the winding surface when the piercing terminal 102 is pressed, allowing the winding to connect and conduct with the piercing terminal 102. The piercing mating part 108 can be used to connect power lines. The platform above the first terminal block 1 can be used to install a protective sleeve, providing a larger assembly platform during stator injection molding to prevent injection molding material from entering the terminal block and to protect the terminal.

[0045] The piercing common terminal 103 eliminates the piercing insertion part 108 based on the piercing terminal 102, and connects the three piercing terminals 102 together. One piercing groove 105 in the piercing common terminal 103 crimps a winding, and after crimping the terminal, the U, V, and W phases are connected.

[0046] Preferred, such as Figure 3 and Figure 4 As shown, when a welding terminal 202 is provided, the welding terminal 202 includes a welding part, the welding part includes a welding platform 204 and a clamping plate 205, the clamping plate 205 can move toward or away from the clamping plate 205, the welding platform 204 is provided with a protrusion 206, and the clamping plate 205 is provided with a groove 207 opposite to the protrusion 206. When the clamping plate 205 is in contact with the welding platform 204, the protrusion 206 is completely located in the groove 207.

[0047] Specifically, the welding terminal 202 also includes a welding mating part 208, which can be used to connect power cords; the welding mounting part 209 can install the welding terminal 202 onto the second terminal block 2 on the stator frame 4; the clamping piece 205 can be bent along the root, and after bending, it forms a V-shape with the welding platform 204. When welding the enameled wire through the welding terminal 202, the clamping plate 205 is first separated from the welding platform 204 to form a V-shaped opening. Then, the enameled wire is placed on the welding platform 204 and pressed onto the protrusion 206. Next, the clamping plate 205 and the welding platform 204 are closed, and the protrusion 206 is inserted into the groove 207. The enameled wire is inserted into the groove 207 and squeezed by the clamping plate 205 and the welding platform 204. In this way, the enameled wire is initially firmly fixed. Then, the surface enamel of the enameled wire is removed by laser stripping, and the wire with the enamel removed and the welding part are welded together by soldering process to realize the connection and conduction between the centralized winding and the welding terminal 202.

[0048] Furthermore, the frame 4 is provided with four second terminal blocks 2, one power supply fixing base 5, and one second common terminal block. Among them, after the welding terminals 202 are inserted into the three adjacent second terminal blocks 2, the welding mating parts 208 are connected to the power lines, and the three-phase power lines of U, V, and W are led out. The power lines are placed clockwise and can be fixed to the power supply fixing base 5 with cable ties. The second common terminal block 201 (also a second terminal block 2) is used to connect the common terminal of the concentrated winding after the welding terminals 202 are installed, so that the three phases of the winding are short-circuited, and is welded to the second common terminal block 201.

[0049] When the piercing terminal 102 is used to connect the winding, after the piercing terminal 102 is installed on the three adjacent first terminal blocks 1, the piercing terminal 102 is connected to the power line, and the three-phase power lines U, V, and W are led out. The power lines are placed counterclockwise and are fixed by the power fixing bracket 5. The first common terminal block is also crimped to short-circuit the three phases of the winding. Since the three adjacent first terminal blocks 1 coincide with the position of the three adjacent second terminal blocks 2 after rotating 180° (symmetric about the center), and the independently set second common terminal block 201 coincides with the position of the first common terminal block 101 after rotating 180°, this design allows the same frame 4 to be used to accommodate two wiring schemes without changing the winding program or the injection mold.

[0050] In this invention, the skeleton 4 can accommodate two different wiring methods (puncture and welding) without changing the winding program and injection mold, thus improving the versatility of materials.

[0051] Preferred, such as Figure 3 As shown, the protrusion 206 is elongated and has a groove on it, which passes through the protrusion 206 along its width.

[0052] A groove is provided on the protrusion 206. When the enameled wire is placed on the protrusion 206, it can be placed in the groove to prevent the enameled wire from slipping off the protrusion 206 when the clamping plate 205 and the welding platform 204 are closed, which would cause the enameled wire to fall off.

[0053] Preferably, when the protrusion 206 is located within the groove 207, a gap is formed between the outer wall of the protrusion 206 and the inner wall of the groove 207.

[0054] By setting a gap, the enameled wire can be held between the protrusion 206 and the groove 207 without being squeezed and broken.

[0055] This utility model also provides an electric motor, including the stator described above.

[0056] Furthermore, the motor is a brushless DC motor, which has advantages such as good mechanical characteristics, wide speed range, strong overload capacity and high working efficiency, and can be widely used in fan loads of household and commercial appliances.

[0057] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A stator comprising an iron core (3) and a frame (4) disposed on the iron core (3), characterized in that, The frame (4) is provided with a first terminal block (1) and a second terminal block (2). The first terminal block (1) is used to insert a piercing terminal (102), and the second terminal block (2) is used to insert a welding terminal (202). The first terminal block (1) and the second terminal block (2) are symmetrically arranged about the center of the iron core (3).

2. The stator according to claim 1, characterized in that, The frame (4) is also provided with a first common terminal block (101) and a second common terminal block (201). The first common terminal block (101) is used to insert a piercing common terminal (103), and the second common terminal block (201) is used to insert a welding common terminal (203). The first common terminal block (101) and the second common terminal block (201) are symmetrically arranged about the center of the iron core (3).

3. The stator according to claim 2, characterized in that, The second common terminal block (201) is the same as the second terminal block (2), and the welding common terminal (203) is the same as the welding terminal (202).

4. The stator according to claim 1, characterized in that, A power supply mounting base (5) is provided on the frame (4).

5. The stator according to claim 1, characterized in that, The first terminal block (1) is provided with a piercing terminal (102), or the second terminal block (2) is provided with a welding terminal (202).

6. The stator according to claim 5, characterized in that, When a piercing terminal (102) is provided, the piercing terminal (102) includes a piercing portion (104), the piercing portion (104) includes two paint strips (106) spaced apart, a piercing groove (105) is formed between the two paint strips (106), and the sidewall of the piercing groove (105) is provided with protrusions (107).

7. The stator according to claim 5, characterized in that, When a welding terminal (202) is provided, the welding terminal (202) includes a welding part, the welding part includes a welding platform (204) and a clamping plate (205), the clamping plate (205) can move toward or away from the clamping plate (205), the welding platform (204) is provided with a protrusion (206), the clamping plate (205) is provided with a groove (207) opposite to the protrusion (206), when the clamping plate (205) is in contact with the welding platform (204), the protrusion (206) is completely located in the groove (207).

8. The stator according to claim 7, characterized in that, The protrusion (206) is elongated and has a groove. The groove passes through the protrusion (206) along its width.

9. The stator according to claim 7, characterized in that, When the protrusion (206) is located in the groove (207), a gap is formed between the outer wall of the protrusion (206) and the inner wall of the groove (207).

10. An electric motor, characterized in that, Includes the stator as described in any one of claims 1-9.

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