Plug-in terminal, compressor and air conditioner

Abstract

The application discloses a plug-in terminal, a compressor and an air conditioner, and relates to the technical field of plug-in terminals, wherein the plug-in terminal is used for connecting a wire with a terminal post, and comprises a terminal cover and a terminal, the terminal cover comprises a fixing plate, one side of the fixing plate facing the terminal post is provided with a sleeve post extending towards the terminal post, the end of the sleeve post facing the terminal post is provided with a notch, the terminal is inserted into the sleeve post, the terminal has a terminal part, the terminal part is clamped in the notch, the end of the sleeve post facing the terminal post is provided with a limiting structure for limiting the axial movement of the terminal along the sleeve post, the terminal is clamped in the sleeve post through the cooperation of the limiting structure and the notch, and the terminal is prevented from falling off from the sleeve post, so that the integrated plug-in mode of the terminal and the terminal cover is realized, the plug-in terminal can be matched with the terminal post of the compressor by pressing the terminal cover, the production process is optimized, and the production efficiency is improved; and the hidden danger that the terminal is prone to loosening from the terminal cover and causing unstable plug-in is solved.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more particularly to a plug-in terminal, a compressor, and an air conditioner. Background Technology

[0002] The compressor is one of the four major components of an air conditioner and is often referred to as its heart. Current compressors generally have three terminals, designated S, R, and C, which are connected to the main board via three wires. Currently, the compressor terminals in related technologies are separate terminals with separate end caps and terminals. These separate terminals have drawbacks such as cumbersome installation processes, unstable connections that are prone to loosening, small contact area, and potential for unstable connections. Summary of the Invention

[0003] The purpose of this invention is to provide a plug-in terminal, a compressor, and an air conditioner, aiming to solve the technical problems of traditional split terminals, such as cumbersome installation process and unstable connection that is prone to loosening.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a plug-in terminal for connecting a wire to a terminal block. The plug-in terminal includes an end cap and a terminal. The end cap includes a fixing plate. A sleeve post extending towards the terminal block is provided on the side of the fixing plate facing the terminal block. A notch is provided at the end of the sleeve post facing the compressor. The terminal is inserted into the sleeve post and has a wiring portion that is engaged within the notch. A limiting structure is provided at the end of the sleeve post facing the terminal block to restrict the terminal from moving axially along the sleeve post.

[0005] In some embodiments, the terminal has an inner hole for inserting a terminal block, the inner hole being adapted to the terminal block, and the wiring portion of the terminal inside the sleeve post being connected to a wire.

[0006] In some embodiments, the limiting structure is a screw cap screwed to the end of the sleeve post facing the terminal, the screw cap having a through hole for insertion of the terminal, the inner diameter of the through hole being smaller than the outer diameter of the terminal.

[0007] In some embodiments, the wiring section is provided with a clamping plate, and when the screw cap is screwed onto the sleeve post, the end of the screw cap away from the compressor abuts against the clamping plate.

[0008] In some embodiments, the outer periphery of the fixing plate has a flange extending toward the terminal block, the flange having a wire passage opening, and a wire clamping groove being provided at the wire passage opening.

[0009] In some embodiments, the outer periphery of the sleeve column is provided with reinforcing ribs, and the end cap and fixing plate are both connected to the reinforcing ribs.

[0010] According to another aspect of this application, embodiments of the present invention provide a compressor including the aforementioned plug-in terminals.

[0011] In some embodiments, the compressor has a positioning pin, and the fixing plate has a positioning hole that matches the positioning pin.

[0012] In some embodiments, the locating pin extends through the locating hole into the portion of the fixing plate away from the compressor and has external threads.

[0013] According to another aspect of this application, an embodiment of the present invention provides an air conditioner including the compressor described above.

[0014] Compared with the prior art, the plug-in terminals of the present invention have at least the following beneficial effects:

[0015] This invention discloses a plug-in terminal for connecting wires to terminals. The plug-in terminal includes an end cap and a terminal. The end cap includes a fixing plate. A sleeve post extending towards the terminal is provided on the side of the fixing plate facing the terminal. A notch is provided at the end of the sleeve post facing the terminal. The terminal is inserted into the sleeve post and has a wiring portion that is engaged within the notch. A limiting structure is provided on the end of the sleeve post facing the terminal to restrict the terminal's axial movement along the sleeve post. Specifically, the plug-in terminal can be used to connect wires connected to the main board of an air conditioner to terminals of a compressor. A sleeve post extending towards the compressor is provided on the side of the fixing plate facing the compressor. The sleeve post and the terminal are positioned opposite each other. A notch is provided at the end of the sleeve post facing the compressor. The terminal is inserted into the sleeve post and has a wiring portion that is engaged within the notch, thus positioning the terminal. On the one hand, it prevents the terminal from rotating inside the sleeve column, and on the other hand, it limits the terminal to prevent it from moving away from the compressor when the terminal is inserted. The sleeve column facing the compressor has a limiting structure that restricts the axial movement of the terminal along the sleeve column. The terminal is locked in the sleeve column by the cooperation of the limiting structure and the notch, preventing the terminal from moving axially and falling out of the sleeve column. This makes the end cover and the terminal assembled as one piece, realizing an integrated plug-in method for the terminal and the end cover. When assembling with the compressor terminal, the plug-in terminal can be made to mate with the compressor terminal by pressing the end cover. Since the terminal is collected in the end cover, the production process is optimized and the production efficiency is improved. It also solves the hidden danger of the terminal easily falling out of the end cover and causing unstable plug-in, and improves the stability of the compressor and air conditioner operation.

[0016] On the other hand, the compressor provided by the present invention is designed based on the above-mentioned plug-in terminals, and its beneficial effects are the same as those of the above-mentioned plug-in terminals, which will not be repeated here.

[0017] On the other hand, the air conditioner provided by the present invention is designed based on the above-mentioned compressor, and its beneficial effects are the same as those of the above-mentioned compressor, which will not be repeated here.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of the plug-in terminal provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the compressor provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the end cap structure of the plug-in terminal provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the plug-in terminal provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the terminal and wire of the plug-in terminal provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the screw cap structure of the plug-in terminal provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Wire; 2. Compressor; 21. Terminal; 3. End cap; 31. Fixing plate; 32. Tube sleeve post; 321. Notch; 33. Flanged edge; 331. Wire passage; 332. Wire clamping groove; 34. Reinforcing rib; 35. Positioning hole; 4. Terminal; 41. Wire clamping piece; 5. Screw cap; 51. Through hole. Detailed Implementation

[0028] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0029] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Example 1

[0032] like Figure 1-6 As shown, this embodiment of the invention provides a plug-in terminal for connecting a wire 1 to a terminal block 21. The plug-in terminal includes an end cap 3 and a terminal 4. The end cap 3 includes a fixing plate 31. The fixing plate 31 has a sleeve post 32 extending towards the terminal block 21 on one side. The sleeve post 32 has a notch 321 at one end facing the terminal block 21. The terminal 4 is inserted into the sleeve post 32. The terminal 4 has a wiring portion that is engaged in the notch 321. The sleeve post 32 has a limiting structure at one end facing the terminal block 21 to restrict the terminal 4 from moving axially along the sleeve post 32.

[0033] In this embodiment, the plug-in terminal is used to connect the wire 1 to the terminal 21. The plug-in terminal includes an end cap 3 and a terminal 4. The end cap 3 includes a fixing plate 31. The fixing plate 31 has a sleeve post 32 extending towards the terminal 21 on the side facing the terminal 21. The end of the sleeve post 32 facing the terminal 21 has a notch 321. The terminal 4 is inserted into the sleeve post 32. The terminal 4 has a wiring portion, which is engaged in the notch 321. The end of the sleeve post 32 facing the terminal 21 has a limiting structure that restricts the terminal 4 from moving axially along the sleeve post 32. Specifically, the plug-in terminal can be used to connect the wire 1 to the main board of the air conditioner. Line 1 is connected to the terminal 21 of compressor 2. A sleeve post 32 extending towards compressor 2 can be provided on the side of the fixing plate 31 facing compressor 2. The protruding parts of the sleeve posts 32 extending towards compressor 2 are isolated from each other by air, enabling effective heat dissipation. Both the fixing plate 31 and the sleeve posts 32 of the end cap 3 can be made of flame-retardant insulating material, such as PVC, to improve the insulation and flame-retardant performance of the fixing plate 31 and the three sleeve posts 32. The fixing plate 31 of the end cap 3 can be integrally formed with the sleeve posts 32, which can improve the stability of the end cap 3 in fixing the sleeve posts 32 and prevent the tubes from being damaged. The misalignment of the sleeve post 32 prevents the terminal 21 from being inserted into the terminal 4 inside the sleeve post 32. Furthermore, the insertion terminals of the sleeve post 32, which are separate from the fixing plate 31 of the end cap 3, are processed separately. This not only requires more material but also consumes more energy during thermoplastic molding. In contrast, the fixing plate 31 of the end cap 3 can be integrally molded with the sleeve post 32, reducing material consumption and the number of molds required, thus achieving cost reduction and efficiency improvement. The sleeve post 32 and the terminal 21 are positioned relative to each other, with notches 321 on both ends of the sleeve post 32 facing the compressor 2. The terminal 4 is inserted into the sleeve post 32, and the length of the terminal 4 can be aligned with the exposed connector of the compressor 2. The lengths of the terminals 21 are basically the same, ensuring that the terminals 21 can be fully inserted into the inner hole of the terminal 4. Moreover, the contact area between the terminals 21 of the compressor 2 and the terminal 4 is increased, which improves the contact stability. The terminal 4 is made of conductive material, such as copper or aluminum, which are highly conductive metals, to prevent the terminal 4 from overheating due to excessive resistance and causing accidents. The terminal 4 has a wiring part, and the wiring parts of the terminal 4 inside the sleeve post 32 are connected to the wires 1 respectively. The wires 1 can be electrically connected to the wiring parts of the terminal 4 inside the sleeve post 32 by means of welding or other methods, which can prevent the wires 1 from falling off or making poor contact with the terminal 4.The wiring portion is engaged within the notch 321 to position the terminal 4. This serves two purposes: firstly, it prevents the terminal 4 from rotating within the sleeve post 32; secondly, it limits the terminal 4, preventing it from moving away from the compressor 2 when the wiring post 21 is inserted. The sleeve post 32, facing the compressor 2, has a limiting structure that restricts the axial movement of the terminal 4 along the sleeve post 32. The engagement of the limiting structure with the notch 321 secures the terminal 4 within the sleeve post 32, preventing axial movement and detachment. Therefore, the invented plug-in terminal, through the engagement of the limiting structure with the notch 321… Terminal 4 is secured within the sleeve post 32 to prevent axial movement and detachment, thus integrating the end cover 3 and terminal 4 into a single unit. This integrated plug-in connection allows for easy assembly with the compressor 2's terminal 21 by pressing the end cover 3. Because terminal 4 is housed within the end cover 3, the production process is optimized, increasing efficiency. This also eliminates the risk of terminal 4 easily detaching from the end cover 3, leading to unstable connections and improving the stability of the compressor and air conditioner operation.

[0034] In some embodiments, terminal 4 has an inner hole for insertion of terminal 21, the inner hole being adapted to terminal 21, and the wiring portion of terminal 4 inside sleeve post 32 being connected to wire 1.

[0035] In this embodiment, terminal 4 has an inner hole for insertion of terminal 21. The inner hole is adapted to terminal 21. Specifically, the inner hole of terminal 4 can be interference-fitted with terminal 21. The inner diameter of the inner hole of terminal 4 is slightly smaller than the outer diameter of terminal 21 (e.g., 0.2mm smaller). The interference fit ensures that when terminal 21 is inserted into the inner hole of terminal 4, the two are in close contact, preventing poor contact due to looseness and resulting in localized heating, thus improving the stability of compressor and air conditioner operation. The wiring part of terminal 4 inside sleeve 32 is connected to wire 1, which is connected to the main board of air conditioner. Terminal 21 of compressor 2 is connected to the motor winding of compressor 2. Therefore, the plug-in terminal of the invention can more quickly and conveniently connect the circuit between the motor winding of compressor 2 and the main board of air conditioner.

[0036] In some embodiments, the limiting structure is a screw cap 5 screwed to the end of the sleeve post 32 facing the terminal post 21. The screw cap 5 has a through hole 51 for the terminal post 21 to be inserted. The inner diameter of the through hole 51 is smaller than the outer diameter of the terminal 4.

[0037] In this embodiment, the limiting structure is a screw cap 5 screwed onto the end of the sleeve post 32 facing the terminal post 21 (compressor 2). The inner circumferential wall of the screw cap 5 has an internal thread, and the outer circumference of the end of the sleeve post 32 facing the terminal post 21 (compressor 2) has an external thread that matches the internal thread of the inner circumferential wall of the screw cap 5. The screw cap 5 and the sleeve post 32 are screwed together through the internal thread of the screw cap 5 and the external thread of the sleeve post 32. The screw cap 5 has a through hole 51 for the terminal post 21 to be inserted. The inner diameter of the through hole 51 is smaller than the outer diameter of the terminal 4, which allows the terminal post 21 to be inserted into the terminal 4 through the through hole 51. At the same time, since the inner diameter of the through hole 51 is smaller than the outer diameter of the terminal 4, it can prevent the terminal post 21 from being pulled out of the sleeve post 32 when it is pulled out of the terminal 4, which plays a role in axially limiting the terminal 4. This solves the hidden danger that the terminal 4 is easy to loosen from the end cap 3, resulting in unstable insertion, and improves the stability of the compressor and air conditioner operation.

[0038] In some embodiments, the wiring portion is provided with a clamping piece 41, and when the screw cap 5 is screwed onto the bushing post 32, the end of the screw cap 5 away from the terminal post 21 abuts against the clamping piece 41.

[0039] In this embodiment, the wiring part is provided with a clamping piece 41. Specifically, the clamping piece 41 is used to clamp the wire 1 to improve wiring efficiency. When the screw cap 5 is screwed onto the sleeve post 32, the end of the screw cap 5 away from the terminal post 21 (compressor 2) abuts against the clamping piece 41. The end of the screw cap 5 away from the terminal post 21 (compressor 2) abuts against the clamping piece 41, which limits the axial movement of the terminal 4. This prevents the terminal post 21 from being pulled out of the sleeve post 32 when it is pulled out of the terminal 4. This solves the hidden danger that the terminal 4 is easy to loosen from the end cap 3, resulting in unstable insertion, and improves the stability of the compressor and air conditioner operation.

[0040] In some embodiments, the outer periphery of the fixing plate 31 has a flange 33 extending toward the terminal block 21, and the flange 33 is provided with a wire passage 331, and a wire clamping groove 332 is provided at the wire passage 331.

[0041] In this embodiment, the outer periphery of the fixing plate 31 has a flange 33 extending toward the terminal 21 (compressor 2). The flange 33 and the fixing plate 31 enclose a cavity structure. The three tube sleeves 32 are located inside the cavity structure. The flange 33 is provided with a wire passage 331, which facilitates the wire 1 to extend into the cavity structure and connect with the terminal 4. A wire clamping groove 332 is provided at the wire passage 331. The wire clamping groove 332 is used to fasten the wire 1 and prevent the wire 1 from loosening under tension, which would affect the fastening of the terminal 4 and the clamping piece 41.

[0042] In some embodiments, the outer periphery of the sleeve column 32 is provided with reinforcing ribs 34, and the end cap 3 and the fixing plate 31 are both connected to the reinforcing ribs 34.

[0043] In this embodiment, a reinforcing rib 34 is provided on the outer periphery of the sleeve column 32. The end cap 3 and the fixing plate 31 are both connected to the reinforcing rib 34. By providing a reinforcing rib 34 on the outer periphery of the sleeve column 32 and connecting the end cap 3 and the fixing plate 31, the strength of the sleeve column 32 is improved.

[0044] The three terminals 21 can be S terminals, R terminals, and C terminals. The two sleeve terminals 32 near the wire passage 331 can be terminals 21 that mate with the R terminals and C terminals respectively, while the sleeve terminal 32 away from the wire passage 331 can be a sleeve terminal 32 that mates with the S terminal. The letters S, R, and C can be marked next to the three sleeve terminals 32. During assembly, the markings of the three wires 1 can be clearly seen, and the human eye can see the terminals 21 through the sleeve terminals 32, thereby enabling quick positioning of the terminals 21 during assembly and improving assembly efficiency.

[0045] Example 2

[0046] The present invention also provides a compressor 2, including the plug-in terminal of embodiment 1.

[0047] In this embodiment, the plug-in terminal can be used to connect the wire 1 connected to the main board of the air conditioner to the terminal 21 of the compressor 2, realizing the circuit conduction; specifically, the side of the fixing plate 31 facing the compressor 2 can be provided with three tube sleeve posts 32 extending towards the compressor 2, and the protruding parts of the three tube sleeve posts 32 extending towards the compressor 2 are isolated from each other by air, which can effectively dissipate heat; the fixing plate 31 of the end cover 3 and the three tube sleeve posts 32 can all be made of flame-retardant insulating material, such as PVC, to improve the flame-retardant insulating effect. The insulation and flame-retardant properties of the fixing plate 31 and the three tubular posts 32 of the end cap 3 are improved. The fixing plate 31 of the end cap 3 can be integrally formed with the three tubular posts 32, which can improve the stability of the end cap 3 in fixing the three tubular posts 32 and prevent the position of the three tubular posts 32 from shifting, causing the terminal 21 to be unable to be inserted into the terminal 4 inside the three tubular posts 32. At the same time, the plug-in terminals of the three tubular posts 32 and the fixing plate 31 of the end cap 3 are processed separately. Not only does thermoplastic molding require more material, but it also requires more energy. The fixing plate 31 of the end cap 3 can... The three sleeve posts 32 are integrally molded, reducing the amount of production material and the number of molds required, thus reducing costs and increasing efficiency. The three sleeve posts 32 are positioned relative to the three terminal posts 21, specifically arranged in an equilateral triangle. Each of the three sleeve posts 32 has a notch 321 at the end facing the compressor 2, and a terminal 4 is inserted into the sleeve post 32. The length of the terminal 4 can be approximately the same as the length of the exposed terminal post 21 of the compressor 2, ensuring that the terminal post 21 can be fully inserted into the inner hole of the terminal 4. Furthermore, the compressor 2's connection... The increased contact area between the post 21 and the terminal 4 improves contact stability. The terminal 4 is made of conductive material, such as copper or aluminum, which are highly conductive metals, to prevent excessive resistance and overheating that could cause accidents. The terminal 4 has a wiring section, and the wiring sections of the terminals 4 in the three sleeve posts 32 are connected to the three wires 1 respectively. The three wires 1 can be electrically connected to the wiring sections of the terminals 4 in the three sleeve posts 32 by means of welding or other methods, which can prevent the wires 1 from falling off or making poor contact with the terminals 4.The wiring portion is engaged within the notch 321 to position the terminal 4. This serves two purposes: firstly, it prevents the terminal 4 from rotating within the sleeve post 32; secondly, it limits the terminal 4, preventing it from moving away from the compressor 2 when the wiring post 21 is inserted. The sleeve post 32, facing the compressor 2, has a limiting structure that restricts the axial movement of the terminal 4 along the sleeve post 32. The engagement of the limiting structure with the notch 321 secures the terminal 4 within the sleeve post 32, preventing axial movement and detachment. Therefore, the invented plug-in terminal, through the engagement of the limiting structure and the notch 321, secures the terminal 4 within the sleeve post 32, preventing axial movement and detachment. Terminal 4 is secured within the sleeve post 32 to prevent axial movement and detachment, thus integrating the end cover 3 with the terminal 4. This achieves a one-piece plug-in connection between the terminal 4 and the end cover 3. When assembling with the three terminals 21 of the compressor 2, pressing the end cover 3 allows the plug-in terminal to engage with the terminals 21 of the compressor 2. Because the terminal 4 is housed within the end cover 3, the production process is optimized, improving efficiency. This also eliminates the risk of the terminal 4 easily detaching from the end cover 3, leading to unstable connections and enhancing the stability of the compressor and air conditioner operation.

[0048] In some embodiments, the compressor 2 has a positioning pin, and the fixing plate 31 has a positioning hole 35 that matches the positioning pin.

[0049] In this embodiment, the compressor 2 has a positioning pin, and the fixing plate 31 has a positioning hole 35 that matches the positioning pin. By cooperating with the positioning pin on the compressor 2 and the positioning hole 35 on the fixing plate 31 that matches the positioning pin, it is convenient to connect and position the plug-in terminal and the terminal block 21.

[0050] In some embodiments, the locating pin extends through the locating hole 35 into the portion of the fixing plate 31 away from the compressor 2 and has external threads.

[0051] In this embodiment, the positioning pin extends through the positioning hole 35 into the part of the fixing plate 31 away from the compressor 2 and has external threads. A nut can be threaded onto the external threads. After the insertion and positioning between the plug terminal and the terminal block 21, the plug terminal and the compressor 2 are locked together by the nut and the positioning pin to prevent the plug terminal and the terminal block 21 of the compressor 2 from detaching from each other.

[0052] Example 3

[0053] The present invention also provides an air conditioner, including the compressor 2 of embodiment 2.

[0054] In this embodiment, the plug-in terminal is used to connect the three wires 1 connected to the main board of the air conditioner to the three terminals 21 of the compressor 2, thereby realizing the conduction of the circuit.

[0055] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0056] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A plug-in terminal for connecting a wire to a terminal block, characterized in that: The connector terminals include: An end cap and a terminal, wherein the end cap includes a fixing plate integrally formed with a sleeve post, the sleeve post extending toward the terminal post and disposed on the side of the fixing plate facing the terminal post, a notch is provided at the end of the sleeve post facing the terminal post, the terminal is inserted into the sleeve post, the terminal has a wiring portion, the wiring portion is engaged in the notch, and a limiting structure is provided at the end of the sleeve post facing the terminal post to restrict the terminal from moving axially along the sleeve post; The limiting structure is a screw cap screwed onto the end of the sleeve post facing the terminal. The inner circumferential wall of the screw cap has an internal thread, and the outer circumference of the end of the sleeve post facing the terminal has an external thread that matches the internal thread of the inner circumferential wall of the screw cap. The screw cap is screwed onto the sleeve post through the internal thread and the external thread of the sleeve post. The screw cap has a through hole for the terminal to be inserted, and the inner diameter of the through hole is smaller than the outer diameter of the terminal. The wiring part is provided with a wire clamping piece. When the screw cap is screwed onto the sleeve post, the end of the screw cap away from the wiring post abuts against the wire clamping piece. The terminal has an inner hole for inserting the terminal block, the inner diameter of the inner hole being slightly smaller than the outer diameter of the terminal block, the terminal and the terminal block being interference-fitted, the inner hole being adapted to the terminal block, and the wiring portion of the terminal inside the sleeve being connected to the wire.

2. The plug-in terminal according to claim 1, characterized in that: The outer periphery of the fixing plate has a flange extending toward the terminal block, and the flange is provided with a wire passage opening, and a wire clamping groove is provided at the wire passage opening.

3. The plug-in terminal according to claim 2, characterized in that: The outer periphery of the sleeve column is provided with reinforcing ribs, and the end cap and the fixing plate are both connected to the reinforcing ribs.

4. A compressor, characterized in that: Includes the plug-in terminal as described in any one of claims 1-3.

5. The compressor according to claim 4, characterized in that: The compressor has a positioning pin, and the fixing plate has a positioning hole that matches the positioning pin.

6. The compressor according to claim 5, characterized in that: The positioning pin extends through the positioning hole into the portion of the fixing plate away from the compressor and has external threads.

7. An air conditioner, characterized in that: Includes the compressor described in any one of claims 4-6.

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