Small-space and small-size connecting terminal, stator assembly using same, and motor

Abstract

The utility model discloses a small-space small-size connecting terminal and a stator assembly and a motor using the same, the small-space small-size connecting terminal comprises a plugging part and a wiring part, the wiring part is used for being connected with an outgoing line of the motor, and the plugging part is used for being connected with a lug plate of the motor; the plugging part comprises a side plate and a first extension plate and a second extension plate which respectively extend out from the edges of the two sides of the side plate, a clamping groove is formed among the side plate, the first extension plate and the second extension plate, the wiring part is connected to the edge of the first extension plate or the second extension plate, and a contact elastic sheet is arranged at the bottom of the first extension plate or the bottom of the second extension plate. The contact elastic sheet is located in the clamping groove, the connecting terminal is connected with the connecting terminal through the plugging structure, the wiring terminal can be effectively connected and fixed, welding-free is achieved, and the wiring terminal has the advantages of being high in reliability and small in contact resistance.

Description

Technical Field

[0001] The utility model relates to a small-space, small-volume connecting terminal and a stator component and a motor using the same. Background Art

[0002] The stator assembly of the existing BLDC plastic-encapsulated motor includes a stator core, end insulation, coil windings, terminal blocks, connecting terminals and an injection molded body. The coil windings are wound after end insulation is installed on both end surfaces of the stator core. Slots for inserting terminal blocks are opened on the end insulation. The enameled leads of the coil windings are connected to the terminal blocks. The injection molded body plastic-encapsulates the stator core, end insulation and coil windings into one body. The ends of the terminal blocks extend out of the injection molded body. The lead wires of the motor are connected to the terminal blocks by welding. The lead wire assembly and the terminal blocks are connected by welding. The main problems with connecting the lead wire assembly and the terminal blocks by welding are: 1. Welding requires employees to have high proficiency and the process is complicated; 2. Tin beads need to be controlled after welding; 3. Welding consumes materials such as soldering iron tips and tin wire. Summary of the Invention

[0003] The purpose of the utility model is to provide a small-volume connection terminal in a small space and a stator assembly and a motor using the same, so as to solve the technical problems in the prior art that welding connection lead wire assemblies and terminal blocks requires employees to have high proficiency, the process is complicated, tin beads need to be controlled after welding, and welding consumes materials such as soldering iron tips and tin wire.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] The utility model provides a small-volume connection terminal for a small space, which is characterized by comprising a connector and a wiring portion, wherein the wiring portion is used to connect to a lead wire of a motor, and the connector is used to connect to a wiring piece of the motor; the connector portion comprises a side plate and a first extension plate and a second extension plate respectively extending from two side edges of the side plate, a card slot is formed between the side plate, the first extension plate and the second extension plate, the wiring portion is connected to the edge of the first extension plate or the second extension plate, a contact spring is provided at the bottom of the first extension plate or the bottom of the second extension plate, and the contact spring is located in the card slot.

[0006] When the above-mentioned wiring part is connected to the first extension plate and a contact spring is provided at the bottom of the first extension plate, a snap plate is provided at the bottom of the edge of the first extension plate, and the end of the snap plate is a dovetail structure, and a snap plate groove is provided at the bottom of the edge of the second extension plate to cooperate with the end of the snap plate.

[0007] The second extension plate mentioned above has a plurality of protruding points on its surface located on the side of the contact spring.

[0008] When the above-mentioned wiring part is connected to the second extension plate and a contact spring is provided at the bottom of the second extension plate, a clip is provided at the bottom of the edge of the second extension plate, and the end of the clip is in a dovetail structure. A clip groove that cooperates with the end of the clip is provided at the bottom of the edge of the first extension plate.

[0009] The first extension plate mentioned above has a plurality of protruding points on its surface located on the side of the contact spring.

[0010] The wiring portion is provided with a plurality of lead wire slots, which are used to connect with the lead wires of the motor.

[0011] An angle φ1 is formed between the side surface of the wiring portion and the side surface of the slot, and the angle φ1 is an acute angle or an obtuse angle.

[0012] An angle φ2 is formed between the bottom edge of the aforementioned connection portion and the edge of the slot, and the angle φ2 is a right angle.

[0013] A stator assembly includes a stator core, end insulation, coil windings, wiring terminals, connecting terminals, and an injection molded body. The end insulation is installed on both end surfaces of the stator core and then the coil windings are wound. The end insulation is provided with a slot for inserting the wiring terminals. The enameled lead wires of the coil windings are connected to the wiring terminals. The injection molded body plastic-seals the stator core, end insulation, and coil windings into one body. The end of the wiring terminal extends out of the injection molded body, and the connecting terminal is installed at the end of the wiring terminal. The characteristic is that the connecting terminal is the small-volume connecting terminal with a small space as described above, the connecting terminal is embedded in the end of the wiring terminal through a slot, and the contact spring abuts the end of the wiring terminal.

[0014] The second extension plate mentioned above has several second protrusions on the surface of one side of the contact spring, and the end of the terminal is provided with several corresponding positioning holes. When the connecting terminal is embedded in the end of the terminal, the second protrusions of the second extension plate are embedded in the positioning holes.

[0015] The first extension plate mentioned above has several second protrusions on the surface on one side of the contact spring, and the end of the terminal is provided with several corresponding positioning holes. When the connecting terminal is embedded in the end of the terminal, the second protrusions of the first extension plate are embedded in the positioning holes.

[0016] A motor includes a stator assembly and a rotor assembly, characterized in that the stator assembly is the stator assembly described above.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model includes a connector and a wiring part, the wiring part is used to connect with the lead wire of the motor, and the connector is used to connect with the wiring piece of the motor; the connector includes a side plate and a first extension plate and a second extension plate extending from the edges of both sides of the side plate respectively, and a card slot is formed between the side plate, the first extension plate and the second extension plate. The wiring part is connected to the edge of the first extension plate or the second extension plate, and a contact spring is provided at the bottom of the first extension plate or the bottom of the second extension plate. The contact spring is located in the card slot, and the connecting terminal is connected to the connecting terminal through the connector structure, which can effectively connect and fix the wiring terminal, realizing the advantages of no welding, high reliability and low contact resistance.

[0019] 2. Other advantages of the present invention are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the first embodiment of the present invention;

[0021] Figure 2 A three-dimensional diagram from another angle provided for the first embodiment of the present invention;

[0022] Figure 3 A side view of the first embodiment of the present invention;

[0023] Figure 4 A perspective view of the second embodiment of the present invention;

[0024] Figure 5 A three-dimensional diagram from another angle provided for the second embodiment of the present utility model;

[0025] Figure 6 A side view of the second embodiment of the present invention;

[0026] Figure 7 A three-dimensional diagram provided for the third embodiment of the present utility model;

[0027] Figure 8 for Figure 7 A partial enlarged view of middle A;

[0028] Figure 9 This is an exploded view of the third embodiment of the present invention;

[0029] Figure 10 This is a structural diagram provided for the fourth embodiment of the present utility model. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1:

[0032] like Figures 1 to 3 As shown, this embodiment provides a small-volume connecting terminal for a small space, which is characterized in that it includes a connector 1 and a wiring part 2, the wiring part 2 is used to connect to the lead wire 6 of the motor, and the connector is used to connect to the wiring piece of the motor; the connector 1 includes a side plate 11 and a first extension plate 12 and a second extension plate 13 extending from the edges of both sides of the side plate 11 respectively, and a card slot 14 is formed between the side plate 11, the first extension plate 12 and the second extension plate 13, the wiring part 2 is connected to the edge of the first extension plate 12 or the second extension plate 13, and a contact spring 15 is provided at the bottom of the first extension plate 12 or the bottom of the second extension plate 13, and the contact spring 15 is located in the card slot 14, and the connecting terminal is connected to the connecting terminal through a connector structure, which can effectively connect and fix the connecting terminal, realize soldering-free, and has the advantages of high reliability and low contact resistance.

[0033] When the above-mentioned wiring portion 2 is connected to the first extension plate 12, and a contact spring 15 is provided at the bottom of the first extension plate 12, a clip 16 is provided at the bottom of the edge of the first extension plate 12, and the end of the clip 16 is a dovetail structure, and a clip groove 17 that cooperates with the end of the clip 16 is provided at the bottom of the edge of the second extension plate 13.

[0034] The contact spring 15 has a plurality of first protrusions 151 on the surface of one side of the second extension plate 13 . The first protrusions 151 are increased to match the size of the connection terminal to fix and limit the connection terminal.

[0035] A plurality of second protrusions 18 are projected from the surface of the second extension plate 13 on one side of the contact spring 15 . The second protrusions 18 are increased to match the size of the terminal to fix and limit the terminal.

[0036] The wiring portion 2 is provided with a plurality of lead-out wire slots 21 , which are used to connect with the lead-out wires of the motor, thereby facilitating the connection of the lead-out wires of the motor.

[0037] An angle φ1 is formed between the side of the wiring portion 2 and the side of the slot 14. The angle φ1 is an acute angle or an obtuse angle. The wiring portion and the slot have a certain angle, which has the advantage of being usable in a small space and a small volume.

[0038] An angle φ2 is formed between the bottom edge of the wiring portion 2 and the edge of the slot 14 . The angle φ2 is a right angle, and the structural arrangement is reasonable.

[0039] Example 2:

[0040] like Figures 4 to 6 As shown, this embodiment is further improved based on the first embodiment. When the wiring portion 2 is connected to the second extension plate 13 and a contact spring 15 is provided at the bottom of the second extension plate 13, a clip 16 is provided at the bottom of the edge of the second extension plate 13. The end of the clip 16 is in a dovetail structure, and a clip groove 17 that cooperates with the end of the clip 16 is provided at the bottom of the edge of the first extension plate 12.

[0041] A plurality of protrusions 18 are protruded from the surface of the first extension plate 12 on one side of the contact spring 15 , and the second protrusions are added to match the size of the terminal to fix and limit the terminal.

[0042] Example 3:

[0043] like Figures 7 to 9 As shown, a stator assembly includes a stator core, end insulation, coil winding, terminal block 4, connecting terminal and injection molding body, the end surfaces of the stator core are installed with end insulation and then wound with coil winding, the end insulation is provided with a slot for inserting the terminal block 4, the enameled lead of the coil winding is connected to the terminal block 4, the injection molding body plastic-seals the stator core, the end insulation and the coil winding into one body, the end of the terminal block 4 extends out of the injection molding body, and the connecting terminal is installed at the end of the terminal block 4, which is characterized in that: the connecting terminal is a small-volume connecting terminal with a small space as described in Example 1, the connecting terminal is embedded in the end of the terminal block 4 through a slot, and the contact spring 15 is against the end of the terminal block 4. Through this structure, welding-free connection is achieved, and the wrapping structure, buckle, bump and spring can achieve the advantages of high reliability and low contact resistance.

[0044] The second extension plate 13 has a plurality of second protrusions 18 projecting from its surface on one side of the contact spring 15, and a plurality of corresponding positioning holes 41 are provided at the end of the connecting terminal 4. When the connecting terminal is embedded in the end of the connecting terminal 4, the second protrusions 18 of the second extension plate 13 are embedded in the positioning holes 41, so that the fixing effect between the connecting terminal and the connecting terminal is better, the installation is simple, and the structural arrangement is reasonable.

[0045] Example 4:

[0046] like Figure 10As shown, a stator assembly includes a stator core, end insulation, coil winding, terminal block 4, connecting terminal and injection molding body. The end surfaces of the stator core are installed with end insulation and then wound with coil winding. The end insulation is provided with a slot for inserting the terminal block 4. The enameled lead of the coil winding is connected to the terminal block 4. The injection molding body plastic-seals the stator core, end insulation and coil winding into one body. The end of the terminal block 4 extends out of the injection molding body. The connecting terminal is installed at the end of the terminal block 4. The connecting terminal is a small-volume connecting terminal with a small space as described in Example 2. The connecting terminal is embedded in the end of the terminal block 4 through a slot. The contact spring 15 is against the end of the terminal block 4. Through this structure, soldering-free connection is achieved. The wrapping structure, buckle, bump and spring can achieve the advantages of high reliability and low contact resistance.

[0047] The first extension plate 12 has a plurality of second protrusions 131 projecting from its surface on one side of the contact spring 15, and a plurality of corresponding positioning holes 41 are provided at the end of the terminal block 4. When the connecting terminal is embedded in the end of the terminal block 4, the second protrusions 18 of the first extension plate 12 are embedded in the positioning holes 41, so that the fixing effect between the connecting terminal and the terminal block is better, the installation is simple, and the structural arrangement is reasonable.

[0048] Embodiment 5:

[0049] A motor includes a stator assembly and a rotor assembly, wherein the stator assembly is the stator assembly described in the third or fourth embodiment.

[0050] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A small-volume connection terminal for a small space, characterized by: The invention comprises a connector (1) and a wiring part (2), wherein the wiring part (2) is used to connect to the lead wire of the motor, and the connector (1) is used to connect to the wiring piece of the motor; the connector (1) comprises a side plate (11) and a first extension plate (12) and a second extension plate (13) respectively extending from the edges of both sides of the side plate (11); a card slot (14) is formed between the side plate (11), the first extension plate (12) and the second extension plate (13); the wiring part (2) is connected to the edge of the first extension plate (12) or the second extension plate (13); a contact spring (15) is provided at the bottom of the first extension plate (12) or the bottom of the second extension plate (13); and the contact spring (15) is located in the card slot (14).

2. The small-volume connection terminal for a small space according to claim 1, characterized in that: When the wiring portion (2) is connected to the first extension plate (12), and a contact spring (15) is provided at the bottom of the first extension plate (12), a clip (16) is provided at the bottom of the edge of the first extension plate (12), and the end of the clip (16) is in a dovetail structure, and a clip groove (17) that matches the end of the clip (16) is provided at the bottom of the edge of the second extension plate (13).

3. The small-volume connection terminal for a small space according to claim 2, characterized in that: A plurality of protrusions (18) are protruded from the surface of the second extension plate (13) on one side of the contact spring (15).

4. The small-volume connection terminal for a small space according to claim 1, characterized in that: When the wiring portion (2) is connected to the second extension plate (13), and a contact spring (15) is provided at the bottom of the second extension plate (13), a clip (16) is provided at the bottom of the edge of the second extension plate (13), and the end of the clip (16) is in a dovetail structure, and a clip groove (17) is provided at the bottom of the edge of the first extension plate (12) to match the end of the clip (16).

5. The small-volume connecting terminal for a small space according to claim 4, characterized in that: A plurality of protrusions (18) are protruded from the surface of the first extension plate (12) on one side of the contact elastic piece (15).

6. A small-space, small-volume connecting terminal according to claim 1, 2, 3, 4, or 5, characterized in that: A plurality of lead-out wire slots (21) are provided on the wiring portion (2), and the lead-out wire slots (21) are used for connecting with lead-out wires of the motor.

7. The small-volume connecting terminal for a small space according to claim 6, characterized in that: An angle φ1 is formed between the side surface of the connection portion (2) and the side surface of the slot (14), and the angle φ1 is an acute angle or an obtuse angle.

8. The small-volume connecting terminal for a small space according to claim 7, characterized in that: An angle φ2 is formed between the bottom edge of the connection portion (2) and the edge of the slot (14), and the angle φ2 is a right angle.

9. A stator assembly, comprising a stator core, end insulation, coil windings, terminal blocks (4), connecting terminals and an injection molded body, wherein the end insulation is mounted on both end surfaces of the stator core and the coil windings are wound thereon, the end insulation is provided with slots for inserting the terminal blocks (4), the enameled leads of the coil windings are connected to the terminal blocks (4), the injection molded body plastic-seals the stator core, the end insulation and the coil windings into one body, the ends of the terminal blocks (4) extend out of the injection molded body, and the connecting terminals are mounted at the ends of the terminal blocks (4), characterized in that: The connecting terminal is a small-volume connecting terminal with a small space as described in any one of claims 1 to 8. The connecting terminal is embedded in the end of the connecting terminal (4) through a slot, and the contact spring (15) is against the end of the connecting terminal (4).

10. A stator assembly according to claim 9, characterized in that: The second extension plate (13) is provided with a plurality of second protrusions (131) on a surface on one side of the contact spring (15), and a plurality of corresponding positioning holes (41) are provided at the end of the connection terminal (4). When the connection terminal is embedded in the end of the connection terminal (4), the second protrusions (131) of the second extension plate (13) are embedded in the positioning holes (41).

11. The stator assembly according to claim 9, characterized in that: A plurality of second protrusions (131) are protruded from the surface of the first extension plate (12) on one side of the contact spring (15); a plurality of corresponding positioning holes (41) are provided at the end of the connection terminal (4); when the connection terminal is embedded in the end of the connection terminal (4), the second protrusions (131) of the first extension plate (12) are embedded in the positioning holes (41).

12. A motor comprising a stator assembly and a rotor assembly, characterized in that: The stator assembly is the stator assembly according to any one of claims 9 to 11.

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