An electrical plug structure for a compressor

Abstract

The utility model provides a kind of electric plug structure of compressor, for and the pin of compressor are inserted, including electric plug body and three connecting columns;Three mounting through holes are opened on the electric plug body, three the mounting through hole is distributed along the circumferential direction, and the mounting through hole is along axial direction and penetrates the electric plug body;Three The connecting column is respectively installed in three the mounting through hole;The connecting column includes the connecting head and connecting rod part of being connected, the connecting head is used to be inserted with the wiring end of compressor, and the connecting rod part is used to be connected with outside;The cross section of the connecting head is scallop shape;The utility model can increase the contact area of the pin of compressor, reduce the phenomenon of sparking caused by bad contact, so that product quality is more stable, can also improve test efficiency simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of compressor testing technology, specifically relating to an electrical plug structure for a compressor. Background Technology

[0002] The compressor's electrical plug is a key component that connects the compressor to the power source, and its design and use directly affect the compressor's safe operation and efficiency.

[0003] The prior art discloses a utility model patent for an electric plug, with publication number CN214124222U, which includes three conductive pins, at least three springs, a blocking member, and an electric plug body; the conductive pins are configured to move along the axial direction of the electric plug body by at least the length of an external terminal under the action of an external force, so that the external terminal can be fully inserted into the electric plug body; the blocking member is movably disposed on the electric plug body, and when the external terminal is fully inserted into the electric plug body, the blocking member limits the external terminal.

[0004] Combined with its appendix Figure 1 As can be seen from b, the cross-section of the part of the plug that contacts the external terminal of the compressor is circular. In practical applications, it has been found that plugs with this shape design are prone to being inserted crookedly and failing to make contact with the external terminal, leading to misjudgment and affecting testing efficiency. Summary of the Invention

[0005] To address the shortcomings of the prior art, this utility model provides an electrical plug structure for a compressor, which increases the contact area with the compressor pins, reduces arcing caused by poor contact, makes product quality more stable, and also improves testing efficiency.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides an electrical plug structure for a compressor, used for connecting to the compressor's pins, including an electrical plug body and three connecting posts; The plug body has three mounting through holes, which are distributed in the circumferential direction and penetrate the plug body in the axial direction. The three connecting posts are respectively installed in the three mounting through holes; The connecting column includes a connecting head and a connecting rod portion connected to each other. The connecting head is used to insert into the pin of the compressor, and the connecting rod portion is used to connect to the outside. The cross-section of the connector head is fan-shaped.

[0007] In some implementations, the lower end face of the plug body protrudes beyond the lower end face of the connector head.

[0008] In some implementations, the lower end face of the plug body protrudes 2mm-5mm beyond the lower end face of the connector head.

[0009] In some implementations, a slot is formed on the side of the plug body corresponding to the position of the connector head; The slot is used to observe the position of the connector head during insertion.

[0010] In some implementations, the connecting head and the connecting rod are detachably connected; A positioning hole is formed on the connecting head, and one end of the connecting rod is inserted into the positioning hole and locked to the connecting head by a screw.

[0011] In some implementations, a bevel is formed on the connecting rod portion corresponding to the position of the screw; The inclined surface slopes downwards towards the screw.

[0012] In some implementations, the upper end of the inclined surface has a first step forming in the direction of the screw.

[0013] In some implementations, three springs are also included, which are sleeved on the outside of the connecting rod portion; One end of the spring abuts against the connecting head, and a second step is formed in the mounting through hole for abutting the other end of the spring.

[0014] In some implementations, a connecting cylinder and a limiting block are also included; The connecting cylinder is connected to the end of the plug body away from the connecting head, and the limiting block is connected to the end of the connecting rod away from the connecting head; The connecting cylinder has a groove for sliding the limiting block.

[0015] In some implementations, a first through hole is formed on the limiting block; The first through hole is used to lead out a cable, so that the connecting rod can be connected to the outside through the cable.

[0016] In summary, this utility model has at least the following advantages: 1. The present invention provides a compressor electrical plug structure, which designs the cross-section of the connector head as a fan shape to increase the contact area with the compressor pins, reduce arcing caused by poor contact, make the product quality more stable, and also improve testing efficiency.

[0017] 2. The electric plug structure of the compressor provided by this utility model, by adding a spring, further improves the tight contact between the connecting head and the pin, avoids the occurrence of false contact, and improves the testing efficiency. Attached Figure Description

[0018] Figure 1 A perspective view of the electrical plug structure provided in Embodiment 1 of this utility model; Figure 2 A cross-sectional view of the electrical plug structure provided in Embodiment 1 of this utility model; Figure 3 This is a bottom view of the electrical plug structure provided in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the connecting column provided in Embodiment 2 of this utility model; Figure 5 This is a structural schematic diagram of the connecting rod portion provided in Embodiment 2 of this utility model; Figure 6 This is a perspective view of the electrical plug structure provided in Embodiment 3 of this utility model; Figure 7 This is a cross-sectional view of the electrical plug structure provided in Embodiment 3 of this utility model; Marked in the image: 100. Plug body; 110. Mounting through hole; 111. Second step; 120. Groove; 200. Connecting post; 210. Connecting head; 220. Connecting rod; 221. Inclined surface; 222. First step; 300. Spring; 400. Connecting cylinder; 410. Slide groove; 500. Limiting block; 510. First through hole. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and 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 of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] Example 1: Please see Figures 1-3 An electrical plug structure for a compressor is used to connect with the compressor's pins to perform performance tests on the compressor, including testing its insulation withstand voltage and resistance values, in order to ensure the performance stability of the compressor.

[0024] The electrical plug structure includes an electrical plug body 100 and three connecting posts 200. The electrical plug body 100 has three mounting through holes 110, which are distributed in the circumferential direction and penetrate the electrical plug body 100 in the axial direction. The three connecting posts 200 are respectively installed in the three mounting through holes 110.

[0025] Understandably, the compressor housing typically has three exposed pins, which facilitate connection to the electrical plug structure for compressor testing. Therefore, in this example, the electrical plug structure includes three connecting posts 200, which are respectively connected to the three pins on the compressor.

[0026] The plug body 100 has three mounting through holes 110, which are used for limiting the installation of the three connecting posts 200. In combination with the arrangement of the pins on the compressor, the three connecting posts 200 are evenly spaced in the circumferential direction. Correspondingly, the three mounting through holes 110 need to be evenly spaced in the circumferential direction, and the mounting through holes 110 penetrate the plug body 100 in the axial direction to realize the through installation of the connecting posts 200.

[0027] Specifically, the connecting column 200 includes a connecting head 210 and a connecting rod 220 connected to each other. The connecting head 210 is used to connect with the pin of the compressor, and the connecting rod 220 is used to connect to the outside. The cross-section of the connecting head 210 is fan-shaped.

[0028] As is known from the background art, the cross-section of the part of the existing electrical plug that contacts the pin is designed to be circular. The circular shape occupies a small area, which makes it easy for the electrical plug to be misaligned when it is plugged into the pin, resulting in misjudgment and affecting the testing efficiency. In this embodiment, the connecting post 200 includes a connecting head 210 and a connecting rod 220 connected to each other. One end of the connecting rod 220 is connected to the connecting head 210, and the other end of the connecting rod 220 is used for external connection. The end of the connecting head 210 away from the connecting rod 220 is used for plugging into the pin of the compressor.

[0029] In order to increase the contact area between the connector head 210 and the pin in a limited space, in this embodiment, the cross-section of the connector head 210 is designed as a fan shape to maximize the contact area. For example, the area on a conventional electrical plug for contact with the pin is 63 mm², while in this example, the area on the electrical plug for contact with the plug can be increased to 146 mm², that is, the cross-sectional area of ​​each connector head 210 can be increased to 146 mm².

[0030] As is known, in the traditional electrical plug structure, the electrical plug body 100 is usually cylindrical, and three mounting through holes 110 penetrate the electrical plug body 100 along the axial direction. There are insulating walls separating the mounting through holes 110. Here, the cross-section of the connecting head 210 is fan-shaped. Correspondingly, there is a contour design in the mounting through holes 110 that matches the shape of the connecting head 210.

[0031] In some embodiments, the lower end face of the plug body 100 protrudes beyond the lower end face of the connector head 210. This ensures that the connector heads 210 do not come into contact with each other and do not short-circuit, thus ensuring the safety of the plug structure.

[0032] Specifically, the lower end face of the plug body 100 protrudes 2mm-5mm beyond the lower end face of the connector head 210. In one example, the lower end face of the plug body 100 protrudes 2mm beyond the lower end face of the connector head 210.

[0033] As is known from the foregoing, the mounting through hole 110 penetrates the plug body 100 in the axial direction, and there is an insulating wall between the mounting through holes 110. It is understood that in order to achieve the insertion contact between the connector head 210 and the pin, the connector head 210 is exposed at the lower end of the plug body 100. However, in order to ensure that each connector head 210 provides insulation protection, the insulating wall located between each mounting through hole 110 extends to the lower end of the lower end face of the connector head 210. The lower end face of this insulating wall is the lower end face of the plug body 100.

[0034] In some embodiments, a slot 120 is formed on the side of the plug body 100 corresponding to the position of the connector head 210; the slot 120 is used to observe the position of the connector head 210 when plugging in.

[0035] It is known that the cross-section of the connector 210 is fan-shaped, including an arc surface. The three connectors 210 are distributed at intervals along the circumferential direction, that is, the arc surfaces of the three connectors 210 are sequentially adjacent to each other. In order to facilitate observation of the position of the connectors 210 during insertion, the slot 120 can be made to correspond to the middle position of the arc surface of each connector 210. In this way, the operator can quickly determine the accuracy of the insertion position of the plug structure.

[0036] The electrical plug structure of the compressor provided in this embodiment has a fan-shaped cross-section of the connector head 210, which increases the contact area with the compressor pins, reduces arcing caused by poor contact, makes the product quality more stable, and also improves testing efficiency.

[0037] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 1-3 Based on the above Figure 4 and Figure 5 .

[0038] In this embodiment, the connecting head 210 and the connecting rod 220 are detachably connected; a positioning hole is formed on the connecting head 210, one end of the connecting rod 220 is inserted into the positioning hole, and is locked to the connecting head 210 by screws.

[0039] By adopting a detachable connection method for the connecting head 210 and the connecting rod 220, material costs can be saved. Specifically, since the cross-section of the connecting head 210 is fan-shaped, while the cross-section of the connecting rod 220 can be designed as a traditional circular shape, and the cross-sectional area of ​​the connecting rod 220 is smaller than that of the connecting head 210, a detachable connection method is adopted for the connecting head 210 and the connecting rod 220 in order to save material costs. After the connecting head 210 and the connecting rod 220 are formed respectively, one end of the connecting rod 220 is inserted into the positioning hole, and then a screw connection is used. The screw is inserted along the side of the connecting head 210 and locked onto the connecting rod 220.

[0040] In some embodiments, a bevel 221 is formed on the connecting rod portion 220 at the position corresponding to the screw; the bevel 221 is inclined from top to bottom toward the screw direction.

[0041] A bevel 221 is formed on the connecting rod 220 at the position corresponding to the screw, which eliminates the need to form a screw hole on the connecting rod 220, making it easier to process. Furthermore, the bevel 221 and the screw tail abut against each other, which can also lock the connecting rod 220.

[0042] Furthermore, the upper end of the inclined surface 221 has a first step 222 facing the screw direction. The first step 222 can abut against the screw, which on the one hand limits the depth of the connecting rod 220 inserted into the positioning hole, and on the other hand can better prevent the connecting rod 220 from dislodging.

[0043] The compressor plug structure provided in this embodiment sets the connecting head 210 and the connecting rod 220 as a detachable connection, which can save material costs. Furthermore, a bevel 221 and a first step 222 are formed at one end of the connecting rod 220, which can improve the installation stability of the connecting rod 220 and prevent the connecting rod 220 from dislodging.

[0044] Example 3: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 1-3 Based on the above Figure 6 and Figure 7 .

[0045] In this embodiment, the plug structure also includes three springs 300, which are sleeved on the outside of the connecting rod portion 220; one end of the spring 300 abuts against the connecting head 210, and a second step 111 is formed in the mounting through hole 110 for abutting against the other end of the spring 300.

[0046] Understandably, three springs 300 are respectively sleeved on the outside of the connecting rod portion 220 of the three connecting posts 200. After the springs 300 are sleeved on the outside of the connecting rod portion 220 and the connecting posts 200 are inserted into the mounting through hole 110, one end of the spring 300 abuts against the connecting head 210 and the other end of the spring 300 abuts against the second step 111. In this state, the connecting head 210 is exposed at the lower end of the plug body 100, waiting to be inserted with the pin. When the plug structure is inserted with the pin, the connecting head 210 is pushed upward by the pin, compressing the spring 300. The connecting head 210 slides upward in the mounting through hole 110, and the pin also enters the mounting through hole 110. After the spring 300 reaches its maximum compression, the connecting head 210 and the pin stop moving, achieving a stable connection.

[0047] In some embodiments, the plug structure further includes a connecting cylinder 400 and a limiting block 500; the connecting cylinder 400 is connected to the end of the plug body 100 away from the connecting head 210, and the limiting block 500 is connected to the end of the connecting rod portion 220 away from the connecting head 210; a groove 410 for sliding of the limiting block 500 is formed on the connecting cylinder 400.

[0048] The limit block 500 and the slide groove 410 are set to further limit the sliding distance of the connector head 210, so as to ensure a stable connection while performing the insertion operation.

[0049] In one example, the groove 410 is exposed on the side of the connecting cylinder 400 to facilitate observation of whether the connecting head 210 has moved into place, that is, whether it is properly inserted.

[0050] Furthermore, a first through hole 510 is formed on the limiting block 500; the first through hole 510 is used to lead out a cable so that the connecting rod 220 can be connected to the outside through the cable.

[0051] As is known, one end of the connecting rod 220 is connected to the connecting head 210, and the other end of the connecting rod 220 is used to connect to the outside. This end is connected to the limiting block 500. In order to achieve the connection stability between the connecting rod 220 and the limiting block 500, an alignment hole for inserting the end of the connecting rod 220 is opened on the limiting block 500. Then, the end of the connecting rod 220 is locked and positioned by screws. In order to facilitate the connection between the connecting rod 220 and the outside, a first through hole 510 is formed on the limiting block 500. The first through hole 510 can lead out a cable so that the connecting rod 220 can be connected to the outside through the cable. The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. An electrical plug structure of a compressor for plugging with a pin of the compressor, characterized in that, Includes the plug body (100) and three connecting posts (200); The plug body (100) has three mounting through holes (110), which are distributed in the circumferential direction and penetrate the plug body (100) in the axial direction. The three connecting posts (200) are respectively installed in the three mounting through holes (110); The connecting column (200) includes a connecting head (210) and a connecting rod (220) connected to each other. The connecting head (210) is used to connect with the pin of the compressor, and the connecting rod (220) is used to connect to the outside. The cross-section of the connecting head (210) is fan-shaped.

2. The electrical plug structure of a compressor according to claim 1, wherein, The lower end face of the plug body (100) protrudes from the lower end face of the connector head (210).

3. The electrical plug structure of the compressor according to claim 2, wherein, The lower end face of the plug body (100) protrudes 2mm-5mm beyond the lower end face of the connector head (210).

4. The electrical plug structure of a compressor according to claim 1, wherein The side of the plug body (100) has a slot (120) corresponding to the position of the connector head (210). The slot (120) is used to observe the position of the connector head (210) during insertion.

5. The electrical plug structure of a compressor according to claim 1, wherein The connecting head (210) and the connecting rod (220) are detachably connected; A positioning hole is formed on the connecting head (210), and one end of the connecting rod (220) is inserted into the positioning hole and locked to the connecting head (210) by screws.

6. The electrical plug structure of the compressor according to claim 5, wherein, An inclined surface (221) is formed on the connecting rod portion (220) corresponding to the position of the screw; The inclined surface (221) slopes downwards toward the screw.

7. The electrical plug structure of the compressor according to claim 6, wherein, The upper end of the inclined surface (221) has a first step (222) facing the screw direction.

8. The electrical plug structure of a compressor according to claim 1, wherein It also includes three springs (300), which are sleeved on the outside of the connecting rod portion (220); One end of the spring (300) abuts against the connecting head (210), and a second step (111) is formed in the mounting through hole (110) for abutting against the other end of the spring (300).

9. The electrical plug structure of a compressor according to claim 8, wherein, It also includes a connecting cylinder (400) and a limiting block (500); The connecting cylinder (400) is connected to the end of the plug body (100) away from the connecting head (210), and the limiting block (500) is connected to the end of the connecting rod (220) away from the connecting head (210). The connecting cylinder (400) has a groove (410) for sliding of the limiting block (500).

10. The electrical plug structure of a compressor according to claim 9, wherein, A first through hole (510) is formed on the limiting block (500); The first through hole (510) is used to lead out a cable so that the connecting rod (220) can be connected to the outside through the cable.

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