Motor wiring switching structure and air compressor

Abstract

The utility model discloses a motor wiring switching structure, which comprises a motor shell, a control panel and a switching part, the motor shell is internally provided with a switching plate electrically connected with a motor wiring, the motor shell is provided with a mounting part, and the mounting part is provided with a notch; the switching part is mounted on the mounting part, the switching part comprises a switching terminal with conductivity, two ends of the switching terminal are respectively constructed into an end head I and an end head II, during assembly, the end head I penetrates through the notch and is electrically connected with the switching plate, the end head II is electrically connected with the control panel, and the switching part is in sealing fit with a corresponding mounting part of the motor shell; the utility model further discloses the air compressor comprising the switching structure, the wiring efficiency is improved, the switching mode of wiring of the control panel and the motor is simplified, positioning and assembling are convenient, space is saved, and messy wiring is avoided; and meanwhile, the switching part is in sealing fit with the motor shell mounting part, so that moisture, dust and the like are prevented from entering the motor through a wiring part, and the working performance of the motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor and air compressor technology, specifically to a motor wiring adapter structure and an air compressor. Background Technology

[0002] Air compressor equipment is used in automotive air suspension systems to provide compressed air to the air springs, thereby changing the vehicle's height to help improve the vehicle's passability and enhance the riding experience.

[0003] Currently, air compressor equipment is known to integrate brushless motors and electronic controllers. To meet the integration needs of air compressor equipment, the control module originally located inside the brushless motor is integrated into the external electronic controller. This requires the multi-phase electrical wiring of the brushless motor to be transferred to the electronic controller. The traditional approach is to extend the length of the multi-phase electrical wiring and pass it through the motor housing until it connects to the electronic controller. This wiring method is inconvenient for assembly, the wiring is prone to becoming messy, and it takes up space. The excessively long wiring also increases the wiring cost. There has also been consideration to use pins to complete the motor wiring transfer, but using pins requires multiple positioning soldering processes, making the wiring transfer inefficient. In addition, the places where the wiring or pins pass through the motor housing are prone to forming gaps, allowing external moisture or dust to enter the motor and affect its performance. Utility Model Content

[0004] Therefore, this utility model provides a motor wiring adapter structure and an air compressor to solve the above-mentioned defects in the prior art.

[0005] This utility model provides a motor wiring adapter structure, including:

[0006] The motor housing has an adapter plate inside that is electrically connected to the motor wiring, and a mounting part on the motor housing has a slot.

[0007] The control board, which integrates the control program;

[0008] An adapter is mounted on the mounting part. The adapter includes an adapter terminal with conductive properties. The two ends of the adapter terminal are respectively configured as end one and end two. During assembly, end one passes through the slot and is electrically connected to the adapter plate, and end two is electrically connected to the control board.

[0009] In embodiments of this utility model, the first end and the adapter plate or the second end and the control board can be electrically connected by plugging or welding.

[0010] In an embodiment of this utility model, the adapter board is provided with a connector one that is electrically connected to the adapter board, and the control board is provided with a connector two that is electrically connected to the control board. The first end is plugged into the first connector for electrical connection, and the second end is plugged into the second connector for electrical connection.

[0011] In embodiments of this utility model, the adapter and mounting portion are configured such that when the adapter is positioned and installed on the mounting portion, external gas will not enter the motor housing from the adapter, the mounting portion, and the connection between them.

[0012] In an embodiment of this utility model, the adapter terminal is a metal columnar structure with conductive properties. The two ends of the adapter terminal are constructed as a first contact elastic part and a second contact elastic part with a hollow interior and an outwardly petal-shaped structure. Both the first contact elastic part and the second contact elastic part are bent and flared from the inside out. The first contact elastic part is inserted into and pressed against the inside of the first connector, and the second contact elastic part is inserted into and pressed against the inside of the second connector.

[0013] In an embodiment of this utility model, the adapter part further includes a pressure plate, which is detachably mounted on the mounting part so that the two ends of the adapter terminal are located inside and outside the motor housing, respectively. The pressure plate is provided with a through hole for fitting the adapter terminal, and the adapter terminal located in the through hole is sealed to the through hole.

[0014] In an embodiment of this utility model, the end of the first contact elastic part or the interface of the first connector is chamfered to form a guide part one, and the end of the second contact elastic part or the interface of the second connector is chamfered to form a guide part two, so as to facilitate the guiding insertion between the adapter terminal and the first and second connectors on both sides.

[0015] In an embodiment of this utility model, the adapter terminal located within the perforation is sealed to the perforation by soldering or plastic coating.

[0016] In an embodiment of this utility model, a sealing ring is further included. The sealing ring is used to achieve a seal between the mounting part and the pressure plate. A sealing groove is provided around the opening on the mounting surface outside the mounting part. The sealing ring is disposed in the sealing groove. The pressure plate is pressed against the mounting surface to apply pressure to the sealing ring.

[0017] In embodiments of this utility model, an electrical control box and a second sealing ring are also included. The electrical control box is positioned and installed relative to the motor housing, and the control board is positioned and installed in the electrical control box. The electrical control box and the outer wall of the pressure plate are sealed together by the second sealing ring.

[0018] Another aspect of this utility model discloses an air compressor, including any of the above-described motor wiring adapter structures.

[0019] This utility model has the following advantages:

[0020] (1) By setting up an adapter, one end of the adapter is electrically connected to the adapter plate located inside the motor and connected to the motor wiring, and the other end of the adapter is electrically connected to the control board outside the motor. This simplifies the wiring connection between the controller and the motor, makes assembly more convenient, and saves space. Furthermore, by setting the mounting part for mounting the adapter on one side of the adapter plate, the connection distance between the adapter and the adapter plate is shortened, which saves wiring distance and avoids messy wiring.

[0021] (2) In addition, in the embodiments of this utility model, the adapter includes an adapter terminal. A connector 1 electrically connected to the adapter is arranged on the adapter plate, and a connector 2 electrically connected to the control plate is arranged on the control plate. The first end of the adapter terminal is inserted into the connector 1 for electrical connection, and the second end of the adapter terminal is inserted into the connector 2 for electrical connection. By setting the two ends of the adapter terminal into a petal-shaped structure that can be guided and clamped with the connector 1 and connector 2, the positioning and welding processes between the adapter terminal and the connector can be reduced, resulting in high assembly efficiency. Furthermore, when the pressure plate of the adapter is installed in the mounting part, the positioning and electrical connection between one end of the adapter terminal and the connector 1 can be completed. When the control box is positioned and installed relative to the motor housing, the positioning and electrical connection between the other end of the adapter terminal and the connector 2 can be completed simultaneously, thereby improving the overall conversion efficiency of motor wiring.

[0022] (3) The adapter and mounting part of this utility model are configured such that when the adapter is positioned and installed in the mounting part, external moisture and dust will not enter the motor housing from the adapter, thereby achieving a seal in the mounting part and preventing the wiring adapter from affecting the motor performance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged structural diagram of part A in the middle;

[0025] Figure 3 This is a schematic diagram showing the disassembled structure of the adapter terminal and the connectors on both sides of this utility model;

[0026] Figure 4 This is a partial exploded view of the motor wiring adapter structure of this utility model;

[0027] Figure 5 This utility model Figure 4 A structural diagram from another perspective;

[0028] Figure 6This is a schematic diagram of the mounting portion on the motor housing of this utility model;

[0029] Figure 7 This is a schematic diagram of the mounting structure of the adapter terminal on the pressure plate of this utility model;

[0030] Figure 8 This utility model Figure 2 A schematic diagram of another embodiment of the part.

[0031] In the picture:

[0032] 100-Air compressor;

[0033] 101-Adapter terminal; 102-Contact elastic part one; 103-Contact elastic part two; 104-Connector one; 105-Connector two; 106-Guide part one; 107-Guide part two; 108-Positioning block; 109-Positioning ring; 110-Limiting block; 111-Pin one; 112-Pin two;

[0034] 201-Motor housing; 202-Adapter plate; 203-Mounting part; 204-Control board; 205-Pressure plate; 206-Through hole one; 207-Positioning hole; 208-Through hole two;

[0035] 301 - Electrical control box; 302 - Sealing ring one; 303 - Sealing groove one; 304 - Sealing ring two; 305 - Sealing groove two; 306 - Groove opening. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0037] like Figures 1 to 8 As shown, the first aspect of this utility model provides a motor wiring adapter structure, which is used to realize efficient electrical connection between the internal wiring of the motor and the external control module.

[0038] In this embodiment of the utility model, the motor wiring adapter structure includes a motor housing 201, an adapter part, and a control board 204 with integrated control program.

[0039] Typically, the motor housing 201 is a cylindrical housing with a certain wall thickness, made of materials including aluminum, hard rubber, or other materials chosen by the manufacturer. The motor housing 201 contains a rotor and a stator, which can convert electrical energy into mechanical energy.

[0040] In this embodiment of the invention, an adapter plate 202 electrically connected to the motor wiring is provided inside the motor housing 201. In this embodiment, the adapter plate 202 is a printed circuit board, and the conductive metal wires arranged inside it are electrically connected to the motor wiring.

[0041] In this embodiment of the utility model, the motor housing 201 is provided with a mounting part 203, and the adapter is installed on the mounting part 203.

[0042] Preferably, the mounting part 203 is disposed on one side of the adapter plate 202, which shortens the connection distance between the adapter part and the adapter plate 202, thereby saving wiring distance and avoiding messy wiring.

[0043] In this embodiment, the adapter includes a conductive adapter terminal 101. Exemplarily, the number of adapter terminals 101 is three. It should be noted that the manufacturer can reasonably arrange the number of adapter terminals 101 according to the actual operating requirements of the motor; for example, it can be one, two, three, or more, and is not limited to the number given in this application.

[0044] The two ends of the adapter terminal 101 are respectively configured as end one and end two. During assembly, end one passes through the slot 306 opened on the mounting part 203 and is electrically connected to the adapter plate 202, and end two is electrically connected to the control plate 204.

[0045] The number of slots 306 matches the number of adapter terminals 101.

[0046] The control board 204 also uses a printed circuit board.

[0047] In some embodiments, the first terminal and the adapter plate 202, or the second terminal and the control board 204, can be electrically connected by plugging or soldering. In actual production, the connection method at both ends of the adapter terminal 101 is not limited to the above embodiments.

[0048] In one possible design, such as Figure 8 As shown, the first end is configured as pin 111, and the second end is configured as pin 112. Both pin 111 and pin 112 can adopt a pin-shaped conductive structure. For example, pin 111 is electrically connected to the adapter board 202 by soldering, and pin 112 is electrically connected to the control board 204 by soldering.

[0049] In practice, the connection methods between pin 111 and pin 112 and the corresponding structural components are not limited to the above embodiments.

[0050] In some embodiments not shown, the two ends of the adapter terminal 101 can be connected to the adapter board 202 and the control board 204 in different ways, such as by plugging and soldering respectively.

[0051] In another possible design, such as Figures 1 to 7 As shown: The adapter plate 202 is provided with a connector 104 that is electrically connected to the adapter plate 202, and the connector 104 is plugged into the connector 104 for electrical connection; the control plate 204 is provided with a connector 105 that is electrically connected to the control plate 204, and the connector 105 is plugged into the connector 105 for electrical connection.

[0052] Preferably, the connector 104 is positioned and installed on the adapter plate 202. For example, the adapter plate 202 has a positioning hole 207, and the connector 104 is provided with a positioning block 108 that cooperates with the positioning hole 207. During installation, aligning the positioning block 108 on the connector 104 with the positioning hole 207 on the adapter plate 202 allows for quick positioning and installation of the connector 104 on the adapter plate 202. This ensures the coaxiality of the connector 104 when it is inserted into the end piece. In specific cases, the positioning method of the connector 104 on the adapter plate 202 is not limited to the above embodiment.

[0053] The connector 104 can be electrically connected to the adapter plate 202 by welding. In other embodiments, snap-fit, bolt, or other connection methods may also be used.

[0054] In this embodiment of the invention, the number of connectors 104 matches the number of adapter terminals 101.

[0055] Preferably, the second connector 105 is positioned and mounted on the control board 204, for example:

[0056] The outer wall of the second connector 105 is provided with a limiting block 110, and the control plate 204 is provided with a second through hole 208. The second connector 105 passes through the second through hole 208, and the limiting block 110 is limited by the side wall of the second through hole 208. During assembly, the second connector 105 is passed through the second through hole 208 on the control plate 204 and positioned by the limiting block 110. This ensures the coaxiality of the second connector 105 when it is inserted into the second end. Then, welding is used to achieve a fixed connection between the second connector 105 and the control plate 204.

[0057] Connector 2 105 can also be fixed to the control board 204 in other ways, such as snap-fit ​​or bolt connection, which will not be elaborated here.

[0058] In this embodiment of the invention, the number of connectors 105 matches the number of adapter terminals 101.

[0059] In some embodiments of this application, the adapter terminal 101 is a conductive metal columnar structure. Both ends of the adapter terminal 101 are configured as a hollow, outwardly petal-shaped contact elastic portion 102 and a second contact elastic portion 103. Both the first contact elastic portion 102 and the second contact elastic portion 103 are generally hollow tubular structures, with several expansion joints extending outwards along the tube diameter. This allows for adjustment of the diameter of the connection ends of the first contact elastic portion 102 and the second contact elastic portion 103, enhancing adaptability during insertion. Preferably, the expansion joints are arranged in a ring array, and the number of expansion joints is preferably 3, 4, or 5.

[0060] In one possible manner, both the first contact elastic part 102 and the second contact elastic part 103 are bent and flared from the inside out. The first contact elastic part 102 is inserted into and pressed against the inside of the first connector 104, and the second contact elastic part 103 is inserted into and pressed against the inside of the second connector 105.

[0061] The flared contact elastic part 102 and contact elastic part 103 can generate tension between themselves and the inner walls of the corresponding connectors 104 and 105, while maintaining a tight fit between them. This eliminates the need for subsequent welding after insertion, improving the efficiency of the connection between the motor wiring and the control module. This simplifies the wiring connection between the controller and the motor, making assembly easier and saving space.

[0062] In some preferred embodiments, the end of the first contact elastic part 102 or the interface portion of the first connector 104 is chamfered to form a guide part 106, and the end of the second contact elastic part 103 or the interface portion of the second connector 105 is chamfered to form a guide part 107, so as to facilitate the guided insertion between the adapter terminal 101 and the two side connectors 104 and 105. For example, Figure 2 and Figure 3 As shown, the interface portions of both connector 104 and connector 105 are chamfered. This arrangement of guide portion 106 and guide portion 107 improves the installation efficiency of contact elastic portion 102 within connector 104 and contact elastic portion 103 within connector 105.

[0063] It should be noted that the insertion method of the two ends of the adapter terminal 101 with connector 104 and connector 105 is not limited to the above embodiments. For example, the interface ends of connector 104 and connector 105 may also adopt a similar petal-shaped structure to achieve electrical connection by inserting connector 104 and connector 105 into the two ends of the adapter terminal 101. Alternatively, the two ends of the adapter terminal 101 may be inserted into connector 104 and connector 105 in other ways to achieve electrical connection. Further details will not be elaborated here.

[0064] In some embodiments of this application, the adapter portion further includes a pressure plate 205, which is detachably mounted on the mounting portion 203 such that both ends of the adapter terminal 101 are located inside and outside the motor housing 201, respectively. For example, the pressure plate 205 is mounted on the mounting portion 203 by screws (not shown in the figure).

[0065] The pressure plate 205 is provided with a through hole 206 for mounting the adapter terminal 101, and the adapter terminal 101 located in the through hole 206 is sealed to the through hole 206.

[0066] Preferably, the adapter terminal 101 is positioned and mounted on the pressure plate 205. Example:

[0067] The outer wall of the middle portion of the adapter terminal 101 is provided with a positioning ring 109, which is limited by the edge of the corresponding through hole 206 on the pressure plate 205. During assembly, several adapter terminals 101 are passed through the corresponding through hole 206 on the pressure plate 205 until the positioning ring 109 is limited by the edge of the through hole 206. This ensures coaxial installation between connector 104, adapter terminal 101, and connector 2 105 during assembly.

[0068] In this embodiment of the application, the adapter and mounting part 203 are configured such that when the adapter is positioned and installed on the mounting part 203, external gas will not enter the motor housing 201 from the adapter, the mounting part 203 and the connection between them.

[0069] It should be noted that the adapter terminal 101 located within the perforation 206 is sealed to the perforation 206 by soldering or plastic coating, and is not limited to the above embodiment. This sealing prevents external moisture or dust from entering the motor through the gap between the perforation 206 and the adapter terminal 101, thus affecting the motor's performance.

[0070] For example, the motor wiring adapter structure also includes a sealing ring 302. The sealing ring 302 is used to achieve a seal between the mounting part 203 and the pressure plate 205. A sealing groove 303 is provided around a plurality of slots 306 on the mounting surface outside the mounting part 203, thereby dividing possible leakage points into a plurality of smaller sealing points and improving the sealing effect. The sealing ring 302 is disposed in the sealing groove 303, and the pressure plate 205 presses against the mounting surface to apply pressure to the sealing ring 302.

[0071] It should be noted that during assembly, the sealing ring 302 should be placed in the sealing groove 303 first, and then the pressure plate 205 should be installed on the mounting surface of the mounting part 203. The adapter terminal 101 fixed on the pressure plate 205 passes through the groove 306. The pressure plate 205 presses the sealing ring 302 tightly on the mounting surface of the mounting part 203 to prevent external air or dust from entering the motor from between the mounting part 203 and the pressure plate 205, thereby improving the sealing effect.

[0072] Furthermore, the motor wiring adapter structure also includes an electrical control box 301, which is positioned relative to the motor housing 201, and the control board 204 is positioned in the electrical control box 301.

[0073] When the electrical control box 301 is positioned relative to the motor housing 201, the connector 105 on the control board 204 inside can be directly fitted with the contact elastic part 103 at one end of the adapter terminal 101 on the pressure plate 205, without the need for positioning between the contact elastic part 103 and the corresponding connector 105, thus improving the efficiency of motor wiring.

[0074] Preferably, the motor wiring adapter structure further includes a second sealing ring 304, which seals the electrical control box 301 to the outer wall of the pressure plate 205. For example, the inner wall of the electrical control box 301 has a second sealing groove 305 for nesting the second sealing ring 304, which acts between the electrical control box 301 and the pressure plate 205. The function of the second sealing ring 304 is to protect the outer adapter portion of the pressure plate 205, further preventing moisture or dust from entering the adapter terminal 101 and the electrical control box 301 through the wiring adapter portion, thus affecting control performance.

[0075] The following is combined Figures 1 to 7 As shown, the conversion method of a motor wiring conversion structure in this embodiment is described in detail, including steps S1 to S3.

[0076] Step S1, Positioning and Installation: Position and electrically connect the second connector 105 to the control board 204, the first connector 104 to the adapter plate 202, and the pressure plate 205 to the adapter terminal 101, and complete the sealing fit between the adapter terminal 101 and the pressure plate 205.

[0077] For example, the second connector 105 and the control board 204, and the first connector 104 and the adapter plate 202 can be fixed by welding;

[0078] The adapter terminal 101 and the pressure plate 205 are sealed by soldering or plastic coating.

[0079] Step S2, Adapter Sealing: The pressure plate 205 with the adapter terminal 101 is sealed and installed in the mounting part 203 of the motor housing 201. The contact elastic part 102 at one end of the adapter terminal 101 is inserted into the connector 104 to realize the electrical connection between the adapter terminal 101 and the adapter plate 202.

[0080] It should be noted that, in specific implementation, the sealing ring 302 is placed in the sealing groove 303 opened on the mounting surface of the mounting part 203, and then the pressure plate 205 is installed on the mounting part 203 with screws to achieve a seal between the pressure plate 205 and the mounting part 203. During the installation of the pressure plate 205, not only is the seal on one side of the pressure plate 205 achieved, but the electrical connection between one end of the adapter terminal 101 and the adapter plate 202 is also achieved simultaneously, which improves the efficiency of wiring and adapter, eliminates the need for repositioning, and eliminates the need for welding between the contact elastic part 102 and the connector 104, simplifying the process.

[0081] Step S3, Adapter Sealing II: Position and install the electrical control box 301 relative to the motor housing 201. The electrical control box 301 and the outer wall of the pressure plate 205 are sealed together. The contact elastic part 103 at one end of the adapter terminal 101 is simultaneously inserted into the connector 105 to realize the electrical connection between the adapter terminal 101 and the control board 204.

[0082] It should be noted that, in specific implementation, after the sealing ring 304 is embedded into the sealing groove 305 on the electrical control box 301, the electrical control box 301 is positioned relative to the motor housing 201. The electrical control box 301 is pressed onto the sealing ring 304 on the outside of the pressure plate 205 to achieve a seal between the outside of the pressure plate 205 and the electrical control box 301, preventing external moisture or dust from entering the adapter terminal 101 and the control board 204 through the adapter part and affecting their performance. While the electrical control box 301 is positioned relative to the motor housing 201, it also achieves the electrical connection between the adapter terminal 101 and the control board 204, improving the efficiency of wiring and adapter, and eliminating the need for re-adaptation and positioning. Furthermore, the contact elastic part 103 and the connector 105 do not need to be welded, simplifying the process.

[0083] In summary, this utility model simplifies the wiring connection between the controller and the motor by setting up an adapter part. One end of the adapter part is electrically connected to an adapter plate located inside the motor, which is electrically connected to the motor wiring, while the other end of the adapter part is electrically connected to a control board outside the motor. This makes the assembly of the controller and the motor easier and saves space. Furthermore, by placing the mounting part for mounting the adapter part on one side of the adapter plate, the connection distance between the adapter part and the adapter plate is shortened, which saves wiring distance and avoids messy wiring.

[0084] Furthermore, in the embodiments of this utility model, the adapter includes an adapter terminal. A connector one electrically connected to the adapter is disposed on the adapter plate, and a connector two electrically connected to the control plate is disposed on the control plate. The first end of the adapter terminal is inserted into the connector one for electrical connection, and the second end of the adapter terminal is inserted into the connector two for electrical connection. By setting both ends of the adapter terminal into a petal-shaped structure that can be guided and clamped with the first and second connectors, the positioning and welding processes between the adapter terminal and the connector can be reduced, resulting in high assembly efficiency. In addition, when the pressure plate of the adapter is installed in the mounting part, the positioning and electrical connection between one end of the adapter terminal and the first connector can be completed. When the control box is positioned and installed relative to the motor housing, the positioning and electrical connection between the other end of the adapter terminal and the second connector is completed simultaneously, thereby improving the overall conversion efficiency of motor wiring.

[0085] Finally, the adapter and mounting section are configured such that when the adapter is positioned and installed in the mounting section, external moisture and dust will not enter the motor housing from the adapter, thus achieving a seal in the mounting section and preventing the wiring adapter from affecting the motor performance.

[0086] The second aspect of this utility model provides an air compressor 100, such as an air compressor for use in an air suspension system, including any of the above-described motor wiring adapter structures, which has all the advantages of the above-described motor wiring adapter structures, which will not be described in detail here.

[0087] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A motor wiring adapter structure, characterized in that: include The motor housing (201) has an adapter plate (202) inside which is electrically connected to the motor wiring. The motor housing (201) has a mounting part (203) with a slot (306). The control board (204) integrates the control program. The adapter is mounted on the mounting part (203). The adapter includes an adapter terminal (101) with conductive properties. The two ends of the adapter terminal (101) are respectively configured as end one and end two. During assembly, end one passes through the slot (306) and is electrically connected to the adapter plate (202), and end two is electrically connected to the control plate (204).

2. The motor wiring adapter structure according to claim 1, characterized in that: The first end can be electrically connected to the adapter plate (202) or the second end can be electrically connected to the control plate (204) by plugging or soldering.

3. The motor wiring adapter structure according to claim 1, characterized in that: The adapter plate (202) is provided with a connector one (104) electrically connected to the adapter plate (202), and the control plate (204) is provided with a connector two (105) electrically connected to the control plate (204). The connector one is plugged into the connector one (104) for electrical connection, and the connector two is plugged into the connector two (105) for electrical connection.

4. The motor wiring adapter structure according to claim 1, characterized in that: The adapter and mounting part (203) are configured such that when the adapter is positioned and installed on the mounting part (203), external gas will not enter the motor housing (201) from the adapter and mounting part (203) and the connection between them.

5. The motor wiring adapter structure according to claim 3, characterized in that: The adapter terminal (101) is a metal columnar structure with conductive properties. The two ends of the adapter terminal (101) are constructed as a contact elastic part one (102) and a contact elastic part two (103) with a hollow interior and a petal-shaped structure facing outward. Both the contact elastic part one (102) and the contact elastic part two (103) are bent and flared from the inside out. The contact elastic part one (102) is inserted into and pressed against the interior of the connector one (104), and the contact elastic part two (103) is inserted into and pressed against the interior of the connector two (105).

6. A motor wiring adapter structure according to claim 1 or 4, characterized in that: The adapter also includes a pressure plate (205), which is detachably mounted on the mounting part (203) so that the two ends of the adapter terminal (101) are located inside and outside the motor housing (201) respectively. The pressure plate (205) is provided with a through hole (206) for fitting the adapter terminal (101), and the adapter terminal (101) located in the through hole (206) is sealed to the through hole (206).

7. The motor wiring adapter structure according to claim 5, characterized in that: The end of the first contact elastic part (102) or the interface of the first connector (104) is chamfered to form a guide part (106), and the end of the second contact elastic part (103) or the interface of the second connector (105) is chamfered to form a guide part (107), so as to facilitate the guiding insertion between the adapter terminal (101) and the two side connectors (104) and connectors (105).

8. The motor wiring adapter structure according to claim 6, characterized in that: The adapter terminal (101) located in the first perforation (206) is sealed to the first perforation (206) by soldering or plastic coating.

9. The motor wiring adapter structure according to claim 6, characterized in that: It also includes a sealing ring (302), which is used to achieve a seal between the mounting part (203) and the pressure plate (205). A sealing groove (303) is provided around the slot (306) on the mounting surface outside the mounting part (203). The sealing ring (302) is located in the sealing groove (303). The pressure plate (205) is pressed against the mounting surface to apply pressure to the sealing ring (302) between them.

10. A motor wiring adapter structure according to claim 6, characterized in that: It also includes an electrical control box (301) and a second sealing ring (304). The electrical control box (301) is positioned relative to the motor housing (201). The control board (204) is positioned in the electrical control box (301). The electrical control box (301) and the outer wall of the pressure plate (205) are sealed together by the second sealing ring (304).

11. An air compressor, characterized in that: Includes a motor wiring adapter structure as described in any one of claims 1 to 10.

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