Refrigerant pump and sealing device of wiring terminal and sealing binding post in shell of refrigerant pump

Abstract

The utility model relates to the technical field of refrigerant pumps, in particular to a sealing device for a binding post and a sealing binding post in a refrigerant pump shell and a refrigerant pump comprising the sealing device. The sealing binding post is provided with a wire holder and a metal rod, the wire holder is connected with a mounting hole in a shell of the refrigerant pump in a sealing mode, the metal rod is arranged on the wire holder, at least part of the metal rod is located in the shell, and the wire holder is connected with the metal rod in the shell. One end of the plug is fixed with the wire holder and seals the wire holder, the other end of the plug is provided with a sealed chamber, a through hole for the metal rod to pass through and lead into the sealed chamber is arranged in the plug, and the sealed chamber accommodates the wiring terminal and is provided with a lead-out hole for a lead-out wire of the wiring terminal to extend out of the sealed chamber; and the lead-out hole is in sealing fit with the lead-out wire. The connecting terminal and the sealing binding post which are originally exposed in the shell can be isolated from a refrigerant in the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerant pumps, in particular to a sealing device for a wiring terminal and a sealing terminal post in a refrigerant pump housing and a refrigerant pump comprising the sealing device. Background Art

[0002] In the prior art, the design of a fully enclosed refrigerant pump is to enclose the motor and the pump body in a housing, connect the motor to an external power source through a sealed terminal, and connect the motor to the sealed terminal through a terminal block. During the operation of the refrigerant pump, the refrigerant will submerge the terminal block and the sealed terminal block, posing certain safety hazards. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a sealing device for the wiring terminals and the sealing terminals in the refrigerant pump housing, which can isolate the wiring terminals and the sealing terminals in the refrigerant pump housing from the refrigerant.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a sealing device for a terminal and a sealed terminal in a refrigerant pump housing. The sealed terminal comprises a terminal seat which is sealed and connected to a mounting hole on the housing of the refrigerant pump and a metal rod which is arranged on the terminal seat and at least partially located inside the housing. The terminal is connected to the metal rod inside the housing. The sealing device comprises a plug which is arranged inside the housing. One end of the plug is fixed to the terminal seat and seals the terminal seat. The other end of the plug is provided with a sealed chamber. The interior of the plug is provided with a through hole for the metal rod to pass through and lead to the sealed chamber. The sealed chamber accommodates the terminal and is provided with a lead-out hole for a lead-out wire of the terminal to extend out of the sealed chamber. The lead-out hole is sealed and matched with the lead-out wire.

[0006] Preferably, a sealing ring is further included, which is pressed between the plug and the terminal socket to seal the terminal socket.

[0007] Preferably, the terminal block includes a seat body portion, a conical portion and an edge portion which are connected in sequence and surround a concave cavity, the seat body portion forms a closed end of the concave cavity and is provided with a metal rod, the conical portion extends radially outwardly at an angle relative to the seat body portion and is sealingly connected to a mounting hole on the shell, and the edge portion forms an opening of the concave cavity and is located inside the shell; the sealing ring has a sealing inclined surface which is in contact with the inner circumferential surface of the conical portion and a sealing groove which is plugged into and matched with the edge portion.

[0008] Preferably, the plug has a disk body covering the opening of the cavity and a column body extending from the middle of a side surface of the disk body close to the cavity and inserted into the cavity, the inner circumference of the sealing ring is in contact with the outer circumference of the column body, one end face of the sealing ring is in contact with the disk body, and a sealing bevel and a sealing groove are formed on the other end face.

[0009] Preferably, a clamp is also included, which is arranged inside the shell and fixes the plug and the terminal socket.

[0010] Preferably, the clamp is annular and connected to the housing at the outer circumference of the terminal block.

[0011] Preferably, the plug and the clamp are plug-fitted and are clamped together by a clamping structure.

[0012] Preferably, a box body and a cover plate are provided at one end of the plug away from the wiring socket, the cover plate and the box body are detachably connected and sealed together, and the cover plate and the box body together form a sealed chamber and a lead-out hole.

[0013] Preferably, a first groove is provided on the box body, a second groove is provided on the cover plate, and the second groove is connected to the first groove to form an outlet hole.

[0014] The utility model also provides a refrigerant pump, comprising the above-mentioned sealing device of the wiring terminal in the refrigerant pump housing and the sealing terminal.

[0015] Compared with the prior art, the present invention has significant improvements:

[0016] The sealing device of the utility model realizes the sealing of the terminal and the sealed terminal placed in the shell of the refrigerant pump through the sealing cooperation of the plug and the terminal seat of the sealed terminal, the provision of a sealed chamber in the plug to accommodate the terminal and the provision of a through hole for the metal rod of the sealed terminal to pass through the sealed chamber and connect with the terminal, so that the terminal and the sealed terminal originally exposed in the shell are isolated from the refrigerant in the shell, and the problem of a significant decrease in the insulation resistance of the whole machine due to the immersion of the terminal and the sealed terminal in the refrigerant is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly of the sealing device and the housing in an embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Schematic diagram after removing the plug and sealing ring.

[0019] Figure 3 yes Figure 1 Schematic top view of .

[0020] Figure 4 yes Figure 3Schematic cross-sectional view along AA direction.

[0021] Figure 5 It is a structural schematic diagram of the sealed terminal in the embodiment of the utility model.

[0022] Figure 6 It is a structural schematic diagram of a sealing ring of a sealing device in an embodiment of the utility model.

[0023] Figure 7 It is a split schematic diagram of the sealing device in the embodiment of the utility model.

[0024] Figure 8 It is a bottom-up axonometric schematic diagram of a cover plate of a sealing device in an embodiment of the utility model.

[0025] Fig. 9 It is a schematic structural diagram of the plug of the sealing device in an embodiment of the utility model after the cover plate is removed.

[0026] Fig.10 It is a bottom view schematic diagram of the plug of the sealing device in the embodiment of the utility model.

[0027] The reference numerals are described as follows:

[0028] 1 Housing

[0029] 10 Mounting holes

[0030] 2 Sealed Terminals

[0031] 21 Terminal Block

[0032] 210 Cavity

[0033] 211 seat body

[0034] 212 Conical part

[0035] 213 Edge

[0036] 22 Metal rod

[0037] 3 Plug

[0038] 30 Sealed Chamber

[0039] 301 Lead hole

[0040] 31 Piercing

[0041] 32 Plate

[0042] 321 Flange

[0043] 33 Column

[0044] 34 Box

[0045] 341 First Groove

[0046] 342 Plug-in column

[0047] 343 socket

[0048] 35 Cover

[0049] 351 Second Groove

[0050] 352 Rod

[0051] 353 steps

[0052] 4 Sealing ring

[0053] 41 sealing bevel

[0054] 42 Sealing groove

[0055] 5 Clamp

[0056] 51 Card table DETAILED DESCRIPTION

[0057] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0061] like Figures 1 to 10 As shown, an embodiment of the sealing device for the wiring terminals and the sealing terminals in the refrigerant pump housing provided by the utility model is provided. The sealing device of this embodiment is used to seal the wiring terminals (not shown in the figure) and the sealing terminals 2 of the motor placed inside the housing 1 of the refrigerant pump, so that the wiring terminals and the sealing terminals 2 originally exposed in the housing 1 are isolated from the refrigerant in the housing 1, thereby solving the problem of a significant decrease in the insulation resistance of the whole machine due to the refrigerant immersing the wiring terminals and the sealing terminals 2. The sealing device of this embodiment is particularly suitable for a fully enclosed refrigerant pump.

[0062] See also Figures 1 to 5 The sealed terminal 2 for connecting the motor terminal and the external power supply has a terminal seat 21 and a metal rod 22. The terminal seat 21 is sealed and connected (such as welded) to the mounting hole 10 on the housing 1 of the refrigerant pump, thereby fixing the sealed terminal 2 on the housing 1. The metal rod 22 is arranged on the terminal seat 21, and at least part of the metal rod 22 is located inside the housing 1, and is used to connect the terminal of the motor placed inside the housing 1, and the terminal is connected to the metal rod 22 inside the housing 1. The metal rod 22 is also at least partly located outside the housing 1, and is used to connect the external power supply.

[0063] The sealing device of this embodiment includes a plug 3, which is arranged inside the housing 1. One end of the plug 3 is fixed to the terminal seat 21 of the sealing terminal 2 and seals the terminal seat 21, so that the terminal seat 21 is isolated from the refrigerant in the housing 1. The other end of the plug 3 is provided with a sealed chamber 30, which is a closed space that isolates the refrigerant in the housing 1. The inside of the plug 3 is provided with a through hole 31, and the through hole 31 provided inside the plug 3 leads to the sealed chamber 30, so that the through hole 31 also isolates the refrigerant in the housing 1. The through hole 31 is for the metal rod 22 of the sealing terminal 2 to pass through, that is, the metal rod 22 located inside the housing 1 passes through the through hole 31 provided inside the plug 3 and passes through the through hole 31 to the sealed chamber 30, so that the metal rod 22 is isolated from the refrigerant in the housing 1. The sealed chamber 30 accommodates the terminal, and the terminal is connected to the metal rod 22 that passes through the through hole 31 to the sealed chamber 30 in the sealed chamber 30. In addition, the sealed chamber 30 is provided with a lead-out hole 301, and the lead-out hole 301 is used for the lead-out wire of the terminal to extend out of the sealed chamber 30 and connect to the motor. The lead-out hole 301 and the lead-out wire are sealed to ensure the airtightness of the sealed chamber 30, so that the terminal is isolated from the refrigerant in the shell 1. Therefore, the sealing device of this embodiment seals the terminal and the sealed terminal 2 placed in the shell 1 of the refrigerant pump by sealing the plug 3 with the terminal seat 21 of the sealed terminal 2, setting the sealed chamber 30 in the plug 3 to accommodate the terminal, and setting the through hole 31 for the metal rod 22 of the sealed terminal 2 to pass through the sealed chamber 30 and connect with the terminal, so that the terminal and the sealed terminal 2 originally exposed in the shell 1 are isolated from the refrigerant in the shell 1, and effectively solve the problem of a significant decrease in the insulation resistance of the whole machine due to the immersion of the terminal and the sealed terminal 2 in the refrigerant.

[0064] To achieve the sealing of the plug 3 to the terminal socket 21 of the sealed terminal post 2, preferably, the sealing device of this embodiment further includes a sealing ring 4, which is pressed between the plug 3 and the terminal socket 21 to seal the terminal socket 21. The sealing ring 4 is preferably made of rubber.

[0065] To ensure the sealing effect, the shape of the sealing ring 4 matches the shape of the end of the wiring seat 21 located inside the housing 1. Figure 4 and Figure 5 The terminal block 21 includes a seat body portion 211, a tapered portion 212 and an edge portion 213 which are sequentially connected and surround a concave cavity 210. The seat body portion 211 forms a closed end of the concave cavity 210, and the metal rod 22 is disposed on the seat body portion 211 and passes through the concave cavity 210. The tapered portion 212 is a conical ring that extends radially outwardly relative to the seat body portion 211, and the tapered portion 212 is sealed and connected to the mounting hole 10 on the housing 1. The edge portion 213 forms the opening of the concave cavity 210 and is located inside the housing 1. Figure 6Preferably, the sealing ring 4 has a sealing bevel 41 and a sealing groove 42. The sealing bevel 41 is in close contact with the inner circumference of the tapered portion 212 of the terminal block 21, and the sealing groove 42 is plugged into the edge portion 213 of the terminal block 21. When the sealing ring 4 is pressed between the plug 3 and the terminal block 21, the sealing bevel 41 and the sealing groove 42 are in close contact with the inner circumference and edge portion 213 of the tapered portion 212 of the terminal block 21, and the sealing effect is better.

[0066] In this embodiment, see Figure 4 and Figure 7 Preferably, the plug 3 has a disk body 32 and a column 33. The disk body 32 can cover the opening of the concave cavity 210 of the terminal block 21. The column 33 extends from the middle of one side of the disk body 32 close to the concave cavity 210 of the terminal block 21 and is inserted into the concave cavity 210. The sealing ring 4 is sleeved on the column 33. The inner circumference of the sealing ring 4 is in close contact with the outer circumference of the column 33. One end face of the sealing ring 4 is in close contact with the disk body 32. A sealing bevel 41 and a sealing groove 42 are formed on the other end face of the sealing ring 4. Thus, the plug 3 is inserted into the concave cavity 210 of the terminal block 21 through the column 33, and the disk body 32 and the column 33 jointly press the sealing ring 4 and the terminal block 21, so that the sealing bevel 41 and the sealing groove 42 of the sealing ring 4 are in close contact with the inner circumference and the edge 213 of the tapered portion 212 of the terminal block 21, thereby sealing the terminal block 21.

[0067] Preferably, the sealing device of this embodiment further comprises a clamp 5, which is arranged inside the housing 1 and fixes the plug 3 to the terminal socket 21. The clamp 5 serves to fix the plug 3 and enable the plug 3 to press the sealing ring 4 to the terminal socket 21. Preferably, the clamp 5 is annular and connected to the housing 1 at the outer peripheral side of the terminal socket 21 of the sealing terminal 2. In this embodiment, the clamp 5 is located at the outer peripheral side of the edge portion 213 of the terminal socket 21. The clamp 5 and the housing 1 are preferably connected and fixed by welding.

[0068] Furthermore, the plug 3 is plugged into the clamp 5, and the plug 3 and the clamp 5 are clamped together by a clamping structure, so that the plug 3 is fixed in the clamp 5 and the plug 3 presses the sealing ring 4 to seal the terminal block 21, which has the advantages of simple and reliable assembly. In this embodiment, the disk body 32 of the plug 3 is sleeved in the clamp 5, and the disk body 32 and the clamp 5 are clamped together by a clamping structure. Preferably, a flange 321 extending in the circumferential direction is provided on the outer circumferential surface of the disk body 32 of the plug 3, and a clamping platform 51 arranged in the circumferential direction is provided on the inner circumferential surface of the clamp 5, and the flange 321 on the disk body 32 and the clamping platform 51 on the clamp 5 constitute a clamping structure. During assembly, the column 33 of the plug 3 is inserted into the concave cavity 210 of the terminal block 21, and the disc 32 is inserted into the clamp 5 and compresses the sealing ring 4 until the flange 321 on the disc 32 passes over the clamping platform 51 on the clamp 5 and then the plug 3 is released. The sealing ring 4 rebounds so that the flange 321 on the disc 32 abuts against the clamping platform 51 on the clamp 5, thereby fixing the plug 3, and the sealing ring 4 is still compressed to a certain extent and is pressed between the plug 3 and the terminal block 21. Preferably, the flange 321 on the disc 32 continuously extends along the circumference of the disc 32 to form a complete ring, and the clamping platform 51 on the clamp 5 is a plurality of protrusions evenly spaced and distributed along the circumference of the inner circumference of the clamp 5, which is more conducive to the flange 321 on the disc 32 passing over the clamping platform 51 on the clamp 5 when the disc 32 is inserted into the clamp 5. More preferably, the outer peripheral side surface of the flange 321 on the disc body 32 is a tapered surface that gradually shrinks in the direction approaching the column 33 , so that the flange 321 can pass over the clamping platform 51 more easily.

[0069] In this embodiment, preferably, the plug 3 is made of plastic and the clamp 5 is made of sheet metal, which is more conducive to the plug-in fit between the plug 3 and the clamp 5 .

[0070] In this embodiment, see Figure 4 and Figure 7 Preferably, a box body 34 and a cover plate 35 are provided at one end of the plug 3 away from the terminal block 21. The cover plate 35 is detachably connected to the box body 34 and sealed. The cover plate 35 and the box body 34 together form a sealed chamber 30 and an outlet hole 301 of the plug 3. During assembly, the terminal can be placed in the box body 34 first, and the metal rod 22 of the sealed terminal 2 passing through the through hole 31 is connected to the terminal, and then the cover plate 35 is connected to the box body 34 to form a sealed chamber 30 to seal the metal rod 22 of the sealed terminal 2 and the terminal.

[0071] Preferably, see Figure 8 and Fig. 9 The box body 34 is provided with a first groove 341, and the cover plate 35 is provided with a second groove 351. When the cover plate 35 is connected to the box body 34, the second groove 351 is connected with the first groove 341 to form an outlet hole 301 (such as Figure 1When the terminal block is placed in the box body 34, the lead wire of the terminal block is placed in the first groove 341 on the box body 34. When the cover plate 35 is connected to the box body 34, the second groove 351 on the cover plate 35 is connected to the first groove 341 on the box body 34, and the second groove 351 and the first groove 341 are both tightly fitted with the lead wire of the terminal block to play a sealing role, so that the lead-out hole 301 and the lead wire of the terminal block are sealed. In this embodiment, the diameter of the lead-out hole 301 is consistent with the diameter of the lead wire of the terminal block, and the first groove 341 on the box body 34 and the second groove 351 on the cover plate 35 are both semicircular grooves.

[0072] Preferably, the cover plate 35 and the box body 34 are detachably connected and sealed by plug-in cooperation. In this embodiment, a plurality of plug-in posts 342 are provided at intervals along the circumferential direction inside the box body 34 close to the inner peripheral wall of the box body 34, the plug-in posts 342 do not protrude from the box body 34, and each plug-in post 342 is provided with a plug-in hole 343. A plurality of plug-in rods 352 are provided at intervals along the circumferential direction on the outer peripheral edge of one side of the cover plate 35 facing the box body 34, and the plurality of plug-in rods 352 are inserted into the plug-in holes 343 on the plurality of plug-in posts 342 in a one-to-one correspondence, so that the cover plate 35 can be connected to the box body 34, and the outer peripheral edge of one side of the cover plate 35 facing the box body 34 is fitted with the box body 34, thereby forming a closed sealed chamber 30.

[0073] To increase the sealing performance, preferably, the outer peripheral edge of the cover plate 35 on one side facing the box body 34 is sunken to form a step 353. When the cover plate 35 is connected to the box body 34, the step 353 is inserted into the inside of the box body 34 and is in close contact with the inner wall of the box body 34, thereby increasing the tightness of the outer peripheral edge of the cover plate 35 on one side facing the box body 34 and the box body 34.

[0074] If complete sealing is considered, glue can be sealed at the joint gap between the cover plate 35 and the box body 34 and at the second groove 351 and the first groove 341 .

[0075] In this embodiment, the box body 34 is disposed on a side surface of the disk body 32 of the plug 3 away from the column 33. Fig. 9 and Fig.10 The through hole 31 inside the plug 3 passes through from the side of the column 33 close to the concave cavity 210 of the terminal block 21 to the side of the disk 32 away from the column 33 and is connected to the internal space of the box body 34, so that when the column 33 is inserted into the concave cavity 210 of the terminal block 2, the metal rod 22 on the terminal block 21 can pass through the through hole 31 and extend into the sealed chamber 30. The number of through holes 31 is the same as the number of metal rods 22 on the terminal block 21, and the distribution of the through holes 31 corresponds to the distribution of the metal rods 22 on the terminal block 21. In this embodiment, the number of lead-out holes 301 of the sealed chamber 30 of the plug 3 is the same as the number of lead-out wires of the terminal.

[0076] In the present embodiment, the metal rod 22 of the sealed terminal 2 is passed through the seat body 211 of the terminal socket 21 and passes through the concave cavity 210. A glass body is provided between the metal rod 22 and the seat body 211 for sealing. The diameter of the glass body is larger than the diameter of the metal rod 22. In order to accommodate the portion of the glass body located in the concave cavity 210, the through hole 31 inside the plug 3 is in an enlarged hole shape with a larger diameter at one end close to the terminal socket 21, so that when the column 33 of the plug 3 is inserted into the concave cavity 210 of the terminal socket 21, the glass body located in the concave cavity 210 is accommodated in the enlarged hole portion at the end of the through hole 31.

[0077] Based on the above sealing device, the embodiment of the utility model further provides a refrigerant pump. The refrigerant pump of this embodiment comprises the sealing device of the wiring terminal and the sealing terminal in the refrigerant pump housing of the embodiment.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A sealing device for a terminal and a sealed terminal in a refrigerant pump housing, wherein the sealed terminal (2) comprises a terminal seat (21) sealedly connected to a mounting hole (10) on a housing (1) of the refrigerant pump and a metal rod (22) disposed on the terminal seat (21) and at least partially located inside the housing (1), wherein the terminal is connected to the metal rod (22) inside the housing (1), characterized in that: The sealing device comprises a plug (3) arranged inside the housing (1), one end of the plug (3) being fixed to the wiring seat (21) and sealing the wiring seat (21), the other end of the plug (3) being provided with a sealed chamber (30), the inside of the plug (3) being provided with a through hole (31) for the metal rod (22) to pass through and leading to the sealed chamber (30), the sealed chamber (30) accommodating the wiring terminal and being provided with a lead-out hole (301) for the lead-out wire of the wiring terminal to extend out of the sealed chamber (30), the lead-out hole (301) being in sealing cooperation with the lead-out wire.

2. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 1, characterized in that: It also comprises a sealing ring (4), wherein the sealing ring (4) is pressed tightly between the plug (3) and the wiring seat (21) and seals the wiring seat (21).

3. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 2, characterized in that: The terminal block (21) comprises a seat body portion (211), a conical portion (212) and an edge portion (213) which are sequentially connected and surround a concave cavity (210); the seat body portion (211) forms a closed end portion of the concave cavity (210) and is provided with the metal rod (22); the conical portion (212) extends radially outwardly and obliquely relative to the seat body portion (211) and is sealedly connected to the mounting hole (10) on the housing (1); the edge portion (213) forms an opening of the concave cavity (210) and is located inside the housing (1); the sealing ring (4) comprises a sealing inclined surface (41) which is in contact with the inner circumferential surface of the conical portion (212) and a sealing groove (42) which is plugged into and matched with the edge portion (213).

4. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 3, characterized in that: The plug (3) comprises a disk body (32) covering the opening of the concave cavity (210) and a column body (33) extending from the middle of a side surface of the disk body (32) close to the concave cavity (210) and inserted into the concave cavity (210); the inner circumferential surface of the sealing ring (4) is in close contact with the outer circumferential surface of the column body (33); one end surface of the sealing ring (4) is in close contact with the disk body (32), and the other end surface is formed with the sealing inclined surface (41) and the sealing groove (42).

5. The sealing device for the wiring terminal and the sealing terminal in the refrigerant pump housing according to claim 1, characterized in that: It also comprises a clamp (5), which is arranged inside the housing (1) and fixes the plug (3) and the wiring seat (21).

6. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 5, characterized in that: The clamp (5) is annular and is connected to the housing (1) on the outer peripheral side of the wiring seat (21).

7. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 6, characterized in that: The plug (3) and the clamp (5) are plug-fitted and matched, and the plug (3) and the clamp (5) are clamped together via a clamping structure.

8. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 1, characterized in that: A box body (34) and a cover plate (35) are provided at one end of the plug (3) away from the wiring seat (21); the cover plate (35) and the box body (34) are detachably connected and sealed together; the cover plate (35) and the box body (34) together form the sealed chamber (30) and the lead-out hole (301).

9. The sealing device for the connection terminal and the sealing terminal in the refrigerant pump housing according to claim 8, characterized in that: The box body (34) is provided with a first groove (341), the cover plate (35) is provided with a second groove (351), and the second groove (351) is connected to the first groove (341) to form the outlet hole (301).

10. A refrigerant pump, characterized in that: A sealing device comprising a terminal and a sealing terminal in a refrigerant pump housing as claimed in any one of claims 1 to 9.

Images