Sealed wiring device and compressor

Abstract

The invention relates to the technical field of compressors, and provides a sealed wiring device and a compressor, the sealed wiring device comprises a wiring seat, a gasket and a wiring box cover; the wire holder is provided with a binding post and / or a thermal switch. The gasket is provided with a first sealing surface and a second sealing surface which are opposite to each other, the junction box cover covers the binding post and / or the thermal switch, the junction box cover is pressed on the second sealing surface in a sealing manner, and the first sealing surface is pressed on the wire holder in a sealing manner; the junction box cover is provided with a plurality of first connecting holes for connecting the wire holder and the junction box cover, and a first reference plane where the axes of at least two first connecting holes are located passes through the gravity center of the junction box cover and / or the gravity center of the gasket. According to the invention, the position of the first connecting hole is limited, so that the moment of the acting force applied to the junction box cover by the connecting piece penetrating through the first connecting hole is more uniform, and the sealing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a sealed wiring device and a compressor. Background Art

[0002] In the refrigeration / heating system, some areas have relatively high waterproof level requirements, such as commercial top-outlet air conditioners, car air conditioners, outdoor energy storage units and other fields.

[0003] Since there are terminal posts on the upper side of the compressor casing, in order to avoid short circuit of the terminal posts, the compressor terminal posts are usually surrounded by a sealing cover to achieve a closed isolation effect to prevent water and dust from entering the interior of the mechanism and causing reduced insulation performance at the wiring points, leakage, short circuit and sparking, etc.

[0004] The existing sealing cover is generally laid with a sealing gasket on the compressor casing, and the sealing cover is covered on the outside of the terminal and crimped onto the sealing gasket. The terminal is sealed by the crimping deformation of the planes. However, the above sealing method is prone to local poor sealing. There will inevitably be a certain gap in the local position of the system wiring, resulting in a low overall sealing level.

[0005] Based on the above technical problems, the present invention requires a sealed wiring device and a compressor to improve the above poor sealing phenomenon. Summary of the invention

[0006] The object of the present invention is to provide a sealed wiring device and a compressor, and to improve the sealing performance at the wiring position of the compressor by improving the sealed wiring device.

[0007] The sealed wiring device of the present invention comprises: a wiring seat, a gasket and a wiring box cover; the wiring seat is provided with a wiring post and / or a thermal switch; the gasket is provided with a through area for the wiring post and / or the thermal switch to pass through, the gasket has a first sealing surface and a second sealing surface opposite to each other, the first sealing surface and the second sealing surface are arranged around the through area; the wiring box cover covers the wiring post and / or the thermal switch, the wiring box cover is sealed and pressed on the second sealing surface, and the first sealing surface is sealed and pressed on the wiring seat; the wiring box cover is provided with a plurality of first connecting holes for connecting the wiring seat and the wiring box cover, and the first reference plane where the axes of at least two of the first connecting holes are located passes through the center of gravity of the wiring box cover and / or the center of gravity of the gasket.

[0008] Optionally, a groove is provided on the first sealing surface, and the groove divides the first sealing surface into an inner sealing surface and an outer sealing surface surrounding the through-area, and both the inner sealing surface and the outer sealing surface are sealed and pressed against the terminal block. In the present invention, by providing a groove on the gasket, two sealing structures are formed between the gasket and the terminal block through the inner sealing surface and the outer sealing surface. Under the action of the junction box cover, the gasket undergoes elastic deformation, and the outer sealing surface serves as the first waterproof wall, which is sealed against the terminal block to prevent water from entering, and the inner sealing surface serves as the second waterproof wall to further prevent water from entering. Moreover, the provision of the groove is also conducive to causing greater elastic deformation at the inner sealing surface and the outer sealing surface, thereby improving the sealing performance.

[0009] Optionally, the gasket is provided with second connection holes corresponding to the first connection holes one by one, and a second reference plane where axes of at least two of the second connection holes are located passes through the center of gravity of the gasket and / or the center of gravity of the junction box cover.

[0010] Optionally, the sealed wiring device also includes a plurality of connecting parts, each of the connecting parts corresponds to each of the first connecting holes one by one, the connecting parts pass through the first connecting holes and the second connecting holes and are connected between the wiring seat and the wiring box cover, and the connecting parts apply a force to the wiring seat to make it seal and press against the second sealing surface.

[0011] Optionally, a boss is provided on one side of the gasket close to the junction box cover, the boss is provided around the through area, the second sealing surface is provided around the boss, and the outer wall of the boss is sealingly matched with the inner wall of the junction box cover.

[0012] Optionally, the junction box cover comprises a box cover body, the box cover body comprises a first arc portion, a second arc portion and a first main body portion, the first main body portion is connected between the first arc portion and the second arc portion, and the first main body portion is tangent to the first arc portion and the second arc portion;

[0013] And / or, the gasket includes a gasket body, the first sealing surface and the second sealing surface are located on the gasket body, the gasket body includes a third arc portion, a fourth arc portion and a second main body portion, the second main body portion is connected between the third arc portion and the fourth arc portion, and the second main body portion is tangent to the third arc portion and the fourth arc portion.

[0014] Optionally, the junction box cover further comprises a first connecting portion and a second connecting portion connected to the box cover body, and the first connecting hole is provided on the first connecting portion and the second connecting portion;

[0015] When the gasket includes a gasket body, the gasket also includes a third connecting portion and a fourth connecting portion connected to the gasket body, and the second connecting hole is opened on the third connecting portion and the fourth connecting portion.

[0016] Optionally, the first connecting portion is tangent to the first arc portion, and the second connecting portion is tangent to the second arc portion;

[0017] When the gasket includes a third connecting portion and a fourth connecting portion, the third connecting portion is tangent to the third arc portion, and the fourth connecting portion is tangent to the fourth arc portion.

[0018] Optionally, a first drainage groove is provided on one side of the first connection portion and the second connection portion close to the gasket, one end of the first drainage groove is connected to the outer edge of the junction box cover, and the other end is connected to the first connection hole;

[0019] And / or, a second drainage groove is formed on one side of the third connection portion and the fourth connection portion close to the wiring seat, one end of the second drainage groove is connected to the extension of the gasket, and the other end is connected to the second connection hole.

[0020] The present invention also provides a compressor, comprising the sealed wiring device described above.

[0021] In summary, the sealed wiring device includes: a terminal block, a gasket and a terminal box cover; the terminal block is provided with a terminal post and / or a thermal switch; the gasket is provided with a through area for the terminal post and / or the thermal switch to pass through, and the gasket has a first sealing surface and a second sealing surface opposite to each other, and the first sealing surface and the second sealing surface are arranged around the through area; a groove is provided on the first sealing surface, and the groove divides the first sealing surface into an inner sealing surface and an outer sealing surface surrounding the through area; the terminal box cover covers the terminal post and / or the thermal switch, and the terminal box cover is sealed and pressed against the second sealing surface, and the inner sealing surface and the outer sealing surface are sealed and pressed against the terminal block.

[0022] Configured in this way, the first connecting hole is used for connecting the terminal block with the terminal box cover, and the first connecting hole defines the position where the force is applied to the terminal box cover, thereby making the torque of the force applied to the terminal box cover by the connecting member passing through the first connecting hole more uniform, which is beneficial to forming a uniform interaction force between the terminal box cover and the gasket, and between the gasket and the terminal block, so that a higher level of sealing effect is formed between the terminal box cover and the gasket, and between the gasket and the terminal block.

[0023] In the present invention, by providing a groove on the gasket, two sealing structures are formed between the gasket and the terminal block through the inner sealing surface and the outer sealing surface. Under the force of the terminal box cover, the gasket undergoes elastic deformation, and the outer sealing surface acts as the first waterproof wall, which is sealed and attached to the terminal block to prevent water from entering, and the inner sealing surface acts as the second waterproof wall to further prevent water from entering. Moreover, the provision of the groove is also conducive to causing greater elastic deformation at the inner sealing surface and the outer sealing surface, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the exploded structure of a sealed wiring device according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic side view of the structure of a sealed wiring device according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of a junction box cover according to an embodiment of the present invention;

[0027] Figure 4 The structure of the gasket of one embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0028] Figure 5 The structure of the gasket of one embodiment of the present invention is schematically shown in FIG. Figure 2 .

[0029] Among them, in the attached drawings:

[0030] 10-Terminal block;

[0031] 20-gasket; 201-second connecting hole;

[0032] 21-gasket body; 211-third arc portion; 212-fourth arc portion; 213-second body portion;

[0033] 22- third connecting portion;

[0034] 23- fourth connecting portion;

[0035] 24-through area; 241-first chamber; 242-second chamber;

[0036] 25-first sealing surface; 251-inner sealing surface; 252-outer sealing surface;

[0037] 26- second sealing surface;

[0038] 27-groove;

[0039] 28- boss;

[0040] 29-partition;

[0041] 291-Second drainage trough;

[0042] 30-junction box cover; 301-first connection hole; 31-box cover body; 311-first arc portion; 312-second arc portion; 313-first body portion; 32-first connection portion; 33-second connection portion; 34-first drainage groove; 35-threaded hole;

[0043] 40-binding post;

[0044] 50-thermal switch;

[0045] 60-connecting piece;

[0046] 70-Waterproof connector. DETAILED DESCRIPTION

[0047] The sealed wiring device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0048] As used in the present invention, the singular forms "one", "an" and "the" include plural objects, the term "or" is usually used to include the meaning of "and / or", the term "several" is usually used to include the meaning of "at least one", and the terms "at least two" or "multiple" are usually used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" can explicitly or implicitly include one or at least two of the features. In addition, as used in the present invention, "installed", "connected", "connected", and one element "set" on another element should be understood in a broad sense, usually only indicating that there is a connection, coupling, matching or transmission relationship between the two elements, and the connection, coupling, matching or transmission between the two elements can be direct or indirect through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element can be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, directional terms such as above, below, up, down, upward, downward, left, right, etc. are used with respect to the exemplary embodiments as they are shown in the figures, with the upward or upper direction toward the top of the corresponding figure, and the downward or lower direction toward the bottom of the corresponding figure.

[0049] This embodiment provides a sealed wiring device, including: a wiring seat 10 , a gasket 20 and a wiring box cover 30 .

[0050] The terminal block 10 can be welded to the outside of the compressor as a part of the compressor housing. In this embodiment, preferably, the terminal block 40 and the thermal switch 50 are integrated on the upper surface of the terminal block 10, so that the sealed terminal device can seal the terminal block 40 and the thermal switch 50 at the same time.

[0051] like Figure 1 As shown, the terminal block 10 is a disc-shaped structure as a whole, and the upper surface of the terminal block 10 is one end of the axial direction thereof, and the upper surface is preferably a large flat area as a whole, so as to contact with the gasket 20 to achieve a better sealing effect. The terminal post 40 and the thermal switch 50 are both integrated on the terminal block 10, and the terminal post 40 and the thermal switch 50 can be positioned and sealed at the same time by the sealed wiring device, which helps to improve the integration.

[0052] In other alternative embodiments, the terminal block 10 may also only integrate the terminal post 40 or the thermal switch 50 .

[0053] In this embodiment, the gasket 20 has a first sealing surface 25 and a second sealing surface 26 opposite to each other (see Figure 4 and Figure 5 shown).

[0054] Please refer to Figure 1 and Figure 2 As shown, the gasket 20 is located between the wiring seat 10 and the wiring box cover 30. The wiring box cover 30 is provided with two first connection holes 301, and the sealed wiring device further includes two connectors 60, which are respectively matched with the two first connection holes 301. The connectors 60 are used to connect between the wiring seat 10 and the wiring box cover 30 to apply a force to the wiring seat 10 to make it seal against the second sealing surface 26.

[0055] In this embodiment, the connector 60 is a connection structure of a stud and a nut. The stud is fixedly connected to the upper surface of the terminal block 10. After the stud passes through the first connection hole 301, it cooperates with the nut to fasten the terminal box cover 30 to the terminal block 10. The optimal torque range of the stud is 1.4-3.8N·M. The terminal box cover 30 is pressed against the gasket 20 by the force of the connector 60, and the gasket 20 is pressed against the upper surface of the terminal block 10. The terminal block 10 and the terminal box cover 30 are sealed by the gasket 20. The inside of the terminal box cover 30 is a hollow structure, and the terminal box cover 30, the gasket 20 and the terminal block 10 are enclosed to form a sealed chamber, and the terminal post 40 and the thermal switch 50 are covered in the chamber, so that the terminal post 40 and the thermal switch 50 are sealed and isolated from the outside.

[0056] In other alternative embodiments, the connection member 60 may be a snap connection, a screw connection, or other known detachable connection structures.

[0057] Combination Figure 1 and Figure 3 As shown, in this embodiment, two first connection holes 301 are arranged on the junction box cover 30, and the axes of the two first connection holes 301 are parallel. Preferably, the first reference plane where the axes of the two first connection holes 301 are located passes through the center of gravity of the junction box cover 30 and the center of gravity of the gasket 20, wherein the first reference plane is naturally determined by the axes of the two first connection holes 301. This arrangement makes the connecting line of the two connecting members 60 applying the force to the junction box cover 30 pass through the center of gravity of the junction box cover 30 and the center of gravity of the gasket 20, so that the torque of the force applied by the connecting member 60 to the junction box cover 30 is more uniform, which is conducive to forming a uniform interaction force between the junction box cover 30 and the gasket 20, and between the gasket 20 and the wiring seat 10, so that a higher level of sealing effect is formed between the junction box cover 30 and the gasket 20, and between the gasket 20 and the wiring seat 10.

[0058] In this embodiment, the first reference plane where the axes of the two first connection holes 301 are located passes through the center of gravity of the junction box cover 30 and the center of gravity of the gasket 20. In other alternative embodiments, the first reference plane may only pass through the center of gravity of the junction box cover 30 or the center of gravity of the gasket 20. This setting method can reduce the assembly accuracy and manufacturing accuracy of each component. The specific matching form can be adjusted based on the actual sealing level requirements.

[0059] In this embodiment, only two first connection holes 301 are provided. By setting the first connection holes 301 at reasonable positions, the technical purpose of applying uniform force to the junction box cover 30 can be met. In other alternative embodiments, multiple first connection holes 301 can be provided, for example, three, four or more. The number of connectors 60 can be adaptively adjusted based on the number of first connection holes 301, and preferably the number of connectors 60 is consistent with the number of first connection holes 301.

[0060] Please refer to Figure 1 , Figure 3 and Figure 4 As shown, the gasket 20 is provided with two second connection holes 201 corresponding to each first connection hole 301, the axes of the two second connection holes 201 are parallel, and the second reference plane where the axes of the two second connection holes 201 are located passes through the center of gravity of the gasket 20 and the center of gravity of the junction box cover 30, wherein the second reference plane is naturally determined by the axes of the two second connection holes 201.

[0061] The above arrangement enables the connector 60 to pass through the first connection hole 301 and the second connection hole 201 corresponding to the first connection hole 301. The connector 60 not only connects the wiring seat 10 and the wiring box cover 30, but also positions the gasket 20 to ensure that the wiring seat 10, the gasket 20 and the wiring box cover 30 have a high relative position accuracy to improve the sealing effect between the wiring box cover 30 and the gasket 20 and between the gasket 20 and the wiring seat 10.

[0062] In this embodiment, it is preferred that the first reference plane and the second reference plane described above are coplanar, and the center of gravity of the gasket 20 and the center of gravity of the junction box cover 30 are located on the same reference axis, and the reference axis is parallel to the pressure direction between the junction box cover 30 and the gasket 20, and is also parallel to the pressure direction between the gasket 20 and the terminal block 10. In this embodiment, the pressure direction between the junction box cover 30 and the gasket 20 and the pressure direction between the gasket 20 and the terminal block 10 are parallel to the stud axis direction of the connector 60, and are also perpendicular to the upper surface of the terminal block 10, and are also perpendicular to the first sealing surface 25 and the second sealing surface 26 described below (the first sealing surface 25 and the second sealing surface 26 are combined in the following content). Figure 4 and Figure 5 Detailed description). This arrangement makes the torque of the two connecting members 60 exerting the force on the junction box cover 30 more uniform, thereby making the junction box cover 30 evenly pressed on the gasket 20, and making the gasket 20 evenly pressed on the wiring seat 10. Through the more uniform interaction force, the phenomenon of poor local sealing caused by insufficient local stress can be improved, which is beneficial to improving the sealing level of the entire sealed wiring device.

[0063] In this embodiment, the second reference planes where the axes of the two second connection holes 201 are located pass through the center of gravity of the junction box cover 30 and the center of gravity of the gasket 20. In other alternative embodiments, the second reference plane may only pass through the center of gravity of the junction box cover 30 or the center of gravity of the gasket 20. This arrangement can also reduce the assembly accuracy and manufacturing accuracy of each component. The specific matching form can be adjusted based on the actual sealing level requirements.

[0064] In other alternative embodiments, a plurality of second connection holes 201 may be provided, for example, three, four or more. Preferably, the number of the second connection holes 201 is consistent with the number of the connection members 60 and the number of the first connection holes 301 .

[0065] Please refer to Figure 1 and Figure 3 As shown, the junction box cover 30 includes a box cover body 31 and a first connecting portion 32 and a second connecting portion 33 connected to the box cover body 31 .

[0066] A first connection hole 301 is formed on each of the first connection portion 32 and the second connection portion 33. The first connection hole 301 is used to cooperate with the connection member 60 to provide the box cover body 31 with a force to press down the gasket 20. The box cover body 31 is mainly used to apply a force to the area corresponding to the gasket 20, so that a tight seal is formed between the box cover body 31 and the gasket 20, and between the gasket 20 and the wiring seat 10.

[0067] Combination Figure 3 As shown, the box cover body 31 includes a first arc portion 311, a second arc portion 312 and a first main body portion 313, the first main body portion 313 is connected between the first arc portion 311 and the second arc portion 312, and the first main body portion 313 is tangent to the first arc portion 311 and the second arc portion 312.

[0068] Please continue to refer to Figure 3 As shown, in this embodiment, the axes of the first arc portion 311 and the second arc portion 312 are parallel, and the diameter of the first arc portion 311 is smaller than the diameter of the second arc portion 312. The first main body portion 313 is approximately trapezoidal in structure, one end of which is tangent to both sides of the first arc portion 311, and the other end is tangent to both sides of the second arc portion 312. This structural arrangement makes the outer contour of the box cover body 31 smoother as a whole, and further makes the outer contour of the end surface of the box cover body 31 in contact with the gasket 20 smoother, so as to provide a more uniform force on the gasket 20 and improve the phenomenon of uneven local force. In addition, the above structure is also suitable for the setting of the terminal 40 and the thermal switch 50. The box cover body 31 has an inner cavity adapted to its outer contour, wherein the inner cavity corresponding to the first arc portion 311 is used to accommodate the thermal switch 50, and the inner cavity corresponding to the second arc portion 312 is used to accommodate the terminal 40. This arrangement helps to reduce the overall volume of the junction box cover 30 while ensuring that the terminal post 40 and the thermal switch 50 are accommodated, thereby reducing the occupied space of the entire sealed wiring device.

[0069] Combination Figure 1 As shown, the first connection part 32 and the second connection part 33 are disposed on both sides of the box cover body 31. Specifically, the plane where the central axis of the first arc part 311 and the central axis of the second arc part 312 are located is used as the equally divided plane of the box cover body 31, and the first connection part 32 and the second connection part 33 are disposed on both sides of the equally divided plane. By reasonably setting the positions of the first connection part 32 and the second connection part 33, the position distribution of the force exerted by the connector 60 on the junction box cover 30 is reasonable, thereby ensuring that the force distance distribution is uniform.

[0070] Further, combined with Figure 1 and Figure 3As shown, the first connection part 32 and the second connection part 33 are approximately U-shaped structures. The first connection part 32 is tangent to the first arc part 311, and the second connection part 33 is tangent to the second arc part 312. This arrangement can improve the stress concentration phenomenon at the connection between the first connection part 32 and the first arc part 311, and the stress concentration phenomenon at the connection between the second connection part 33 and the second arc part 312, so as to ensure that the force on the first connection part 32 and the second connection part 33 is evenly transmitted to the box cover body 31. In addition, the above arrangement is also conducive to optimizing the overall shape of the junction box cover 30, and then optimizing the overall center of gravity of the junction box cover 30, so that the force of the box cover body 31 acting on the gasket 20 is more evenly distributed.

[0071] The height of the first connection part 32 and the second connection part 33 (the height direction is consistent with the axial direction of the first connection hole 301) is lower than the height of the box cover body 31, and the end surface of the first connection part 32 and the second connection part 33 close to the gasket 20 is coplanar with the end surface of the box cover body 31 close to the gasket body 21. This arrangement is beneficial to saving material costs and reducing the space occupied by the junction box cover 30.

[0072] Please continue to refer to Figure 3 As shown, a first drainage groove 34 is provided on one side of the first connection part 32 and the second connection part 33 near the gasket 20, one end of the first drainage groove 34 is connected to the outer edge of the corresponding connection part, and the other end is connected to the first connection hole 301 on the corresponding connection part. The first drainage groove 34 is arranged on the first connection part 32 and the second connection part 33, and does not damage the integrity of the sealing surface of the lower edge of the box cover body 31, which is conducive to ensuring a good sealing effect. This arrangement allows water that penetrates into the first connection hole 301 to be discharged through the first drainage groove 34 to prevent water accumulation inside.

[0073] Combination Figure 1 and Figure 3 As shown, the side of the first main body 313 on the junction box cover 30 is also provided with a threaded hole 35, which can be externally connected to the waterproof connector 70, and can quickly achieve the connection and sealing of the waterproof connector 70. The wiring of the terminal 40 can pass through the threaded hole 35 into the waterproof connector 70 and connect to the external device.

[0074] Please refer to Figure 1 , Figure 4 and Figure 5 As shown, the gasket 20 includes a gasket body 21 , a third connecting portion 22 and a fourth connecting portion 23 connected to the gasket body 21 , and the second connecting hole 201 is opened on the third connecting portion 22 and the fourth connecting portion 23 .

[0075] The gasket body 21 is used to form a sealing fit with the wiring seat 10 and the wiring box cover 30 , and the third connecting portion 22 and the fourth connecting portion 23 are used to cooperate with the two connecting members 60 .

[0076] A second connection hole 201 is provided on each of the third connection portion 22 and the fourth connection portion 23 for mating with the connection member 60. The shape of the gasket body 21 matches the shape of the box cover body 31, and the gasket body 21 is mainly used for mating with the box cover body 31, and the box cover body 31 applies a downward pressure force to the gasket body 21, so that a tight sealing fit is formed between the box cover body 31 and the gasket 20, and between the gasket 20 and the wiring seat 10.

[0077] like Figure 4 and Figure 5 As shown, the gasket body 21 includes a third arc portion 211, a fourth arc portion 212 and a second body portion 213, the second body portion 213 is connected between the third arc portion 211 and the fourth arc portion 212, and the second body portion 213 is tangent to the third arc portion 211 and the fourth arc portion 212.

[0078] In this embodiment, the axes of the third arc portion 211 and the fourth arc portion 212 are parallel, and the diameter of the third arc portion 211 is smaller than the diameter of the fourth arc portion 212. The second main body portion 213 is approximately trapezoidal in structure, one end of which is tangent to both sides of the third arc portion 211, and the other end is tangent to both sides of the fourth arc portion 212. The shape of the gasket body 21 is adapted to the shape of the box cover body 31. This structural arrangement makes the outer contour of the gasket body 21 smoother as a whole, and thus makes the outer contour of the contact end surface of the gasket body 21, the box cover body 31 and the terminal block 10 smoother. And the shape of the gasket body 21 is adapted to the shape of the box cover body 31, so that a relatively uniform force is formed between the gasket body 21, the box cover body 31 and the terminal block 10, and improves the phenomenon of uneven local force.

[0079] In addition, the above structure is also suitable for the arrangement of the terminal 40 and the thermal switch 50, such as Figure 4 As shown, the gasket body 21 is provided with a through area 24 for the terminal 40 and the thermal switch 50 to pass through. The overall shape of the through area 24 is similar to the outer contour of the gasket body 21 (the shape of the middle parts of the two end arcs being tangent). The through area 24 has a partition 29 in the middle, thereby dividing the through area 24 into a first chamber 241 located in the third arc portion 211 and a second chamber 242 located in the fourth arc portion 212, wherein the first chamber 241 is used for the thermal switch 50 to pass through and conform to the thermal switch 50, and the second chamber 242 is used for the terminal 40 to pass through and conform to the terminal 40, thereby taking into account both the fixation of the terminal 40 and the installation of the thermal switch 50.

[0080] Combination Figure 4 and Figure 5 As shown, the third connection part 22 and the fourth connection part 23 are arranged on both sides of the gasket body 21. Specifically, the plane where the central axis of the third arc part 211 and the central axis of the fourth connection part 23 are located is used as the equally divided plane of the gasket body 21, and the third connection part 22 and the fourth connection part 23 are arranged on both sides of the equally divided plane. By reasonably setting the positions of the third connection part 22 and the fourth connection part 23, the shape of the gasket body 21 is adapted to the shape of the box cover body 31, so that the force applied by the box cover body 31 to the gasket body 21 is more evenly distributed.

[0081] Further, combined with Figure 4 and Figure 5 As shown, the third connection part 22 and the fourth connection part 23 are approximately U-shaped structures. The third connection part 22 is tangent to the third arc part 211, and the fourth connection part 23 is tangent to the fourth arc part 212. This arrangement can improve the stress concentration phenomenon at the connection between the third connection part 22 and the third arc part 211 and the stress concentration phenomenon at the connection between the fourth connection part 23 and the fourth arc part 212. It is also conducive to optimizing the overall shape of the gasket 20, and then optimizing the overall center of gravity of the gasket 20. The center of gravity of the junction box cover 30 and the gasket 20 is more stable, so that the force distribution of the box cover body 31 on the gasket 20 is more even, and a high level of sealing requirements can be achieved.

[0082] Please refer to Figure 4 and Figure 5 As shown, the first sealing surface 25 and the second sealing surface 26 are arranged around the through area 24. The first sealing surface 25 and the second sealing surface 26 are located on the gasket body 21, and the first sealing surface 25 and the second sealing surface 26 are at least partially overlapped in their vertical projections. Figure 4 As shown, the first sealing surface 25 corresponds to the lower surface of the gasket body 21 , and the second sealing surface 26 corresponds to the upper surface of the gasket body 21 .

[0083] The first sealing surface 25 is provided with a groove 27, and the groove 27 divides the first sealing surface 25 into an inner sealing surface 251 and an outer sealing surface 252 surrounding the through area 24. The inner sealing surface 251 is located on the inner side of the groove 27, and the outer sealing surface 252 is located on the outer side of the groove 27, that is, the groove 27 is located between the inner sealing surface 251 and the outer sealing surface 252.

[0084] The shape of the lower edge of the junction box cover 30 is adapted to the second sealing surface 26 , and the lower edge of the junction box cover 30 is sealed and pressed against the second sealing surface 26 , and the inner sealing surface 251 and the outer sealing surface 252 are sealed and pressed against the wiring seat 10 .

[0085] In this embodiment, the height of the gasket 20 is preferably above 1 mm to 4.0 mm, and the material of the gasket 20 can be EPDM rubber, silicone rubber, nitrile rubber, PE foam material or polyurethane foam material.

[0086] Then, two sealing structures are formed between the gasket 20 and the terminal block 10 through the inner sealing surface 251 and the outer sealing surface 252. Under the action of the terminal box cover 30, the gasket 20 undergoes elastic deformation, and the outer sealing surface 252 acts as the first waterproof wall, which is sealed against the terminal block 10 to prevent water from entering; the inner sealing surface 251 acts as the second waterproof wall, which can further prevent water from entering. Moreover, the provision of the groove 27 is also conducive to causing greater elastic deformation at the inner sealing surface 251 and the outer sealing surface 252, thereby improving the sealing performance.

[0087] Please continue to refer to Figure 4 As shown, a boss 28 is provided on one side of the gasket 20 close to the junction box cover 30, the boss 28 is provided around the through area 24, the second sealing surface 26 is provided around the boss 28, the second sealing surface 26 corresponds to the outer sealing surface 252 along its vertical direction, and the boss 28 corresponds to the inner sealing surface 251.

[0088] The outer wall of the boss 28 is sealed with the inner wall of the junction box cover 30. The outer wall of the boss 28 and the inner wall of the junction box cover 30 can be set as a conical surface structure, and the two form an interference seal fit.

[0089] Preferably, the inner cavity of the junction box cover 30 has a step surface, which contacts the upper surface of the boss 28, thereby forming a force on the boss 28. At this time, the main force is applied to the outer sealing surface 252 through the lower edge of the junction box cover 30, and the step surface of the junction box cover 30 and the upper surface of the boss 28 apply an auxiliary force. Preferably, the auxiliary force is slightly smaller than the main force to ensure that the force on the boss 28 is directly transmitted to the inner sealing surface 251.

[0090] The lower edge of the junction box cover 30 conforms and seals with the second sealing surface 26 to form a first sealing structure, and the inner wall of the junction box cover 30 conforms and seals with the outer wall of the boss 28 to form a second sealing structure. That is, two sealing structures are also formed between the junction box cover 30 and the gasket 20.

[0091] In addition, when the junction box cover 30 applies a force to the second sealing surface 26, since the second sealing surface 26 corresponds to the outer sealing surface 252 along its vertical direction, the outer sealing surface 252 will be directly subjected to a large force to seal against the terminal block 10. At the same time, due to the presence of the groove 27, the gasket body 21 can undergo a large elastic deformation along its vertical direction, thereby causing the inner sealing surface 251 to be sealed against the terminal block 10 by a large force, and the inner sealing surface 251 and the outer sealing surface 252 form a reliable sealing effect. In addition, the second sealing surface 26 corresponds to the outer sealing surface 252 along its vertical direction. When the second sealing surface 26 is subjected to a force applied by the junction box cover 30, the area between the second sealing surface 26 and the outer sealing surface 252 is directly squeezed, thereby ensuring that the area here undergoes elastic deformation along its vertical direction, improving the phenomenon of lateral tilt deformation of the gasket 20 at the position of the inner sealing surface 251 and the outer sealing surface 252, and preventing the gasket 20 from being lateral crushed.

[0092] In this embodiment, the thickness of the third connection portion 22 and the fourth connection portion 23 is consistent with that of the gasket body 21 , so that the overall consistency of the gasket 20 is better, thereby achieving a better sealing effect.

[0093] Furthermore, the third connection part 22 and the fourth connection part 23 are provided with a second drainage groove 291 on one side close to the wiring seat 10, one end of the second drainage groove 291 is connected to the outer edge of the corresponding connection part, and the other end is connected to the second connection hole 201 on the corresponding connection part. The second drainage groove 291 is arranged on the third connection part 22 and the fourth connection part 23, and does not damage the integrity of the inner sealing surface 251 and the outer sealing surface 252. This arrangement allows water that penetrates into the first connection hole 301 and the second connection hole 201 to be discharged through the second drainage groove 291 to prevent internal water accumulation.

[0094] This embodiment also provides a compressor, which includes the sealed wiring device described above. The sealed wiring device can be applied to compressors of refrigeration (heat) circulation systems such as refrigerators, air conditioners, freezers, heat pump water heaters, dryers, cold dryers, communications industry, and energy storage.

[0095] The compressor also includes a compressor housing, and the terminal socket 10 is a part of the compressor housing. The compressor also includes a motor, a rotor and other components built into the compressor housing. The difference of the compressor in this embodiment lies in the replacement of the sealed wiring device. The other structures of the compressor are consistent with the existing structures and will not be repeated here.

[0096] In summary, the sealed wiring device includes: a terminal block, a gasket and a terminal box cover; the terminal block is provided with a terminal post and / or a thermal switch; the gasket is provided with a through area for the terminal post and / or the thermal switch to pass through, and the gasket has a first sealing surface and a second sealing surface opposite to each other, and the first sealing surface and the second sealing surface are arranged around the through area; a groove is provided on the first sealing surface, and the groove divides the first sealing surface into an inner sealing surface and an outer sealing surface surrounding the through area; the terminal box cover covers the terminal post and / or the thermal switch, and the terminal box cover is sealed and pressed against the second sealing surface, and the inner sealing surface and the outer sealing surface are sealed and pressed against the terminal block.

[0097] With such configuration, in the present invention, by providing a groove on the gasket, two sealing structures are formed between the gasket and the terminal block through the inner sealing surface and the outer sealing surface. Under the action of the terminal box cover, the gasket undergoes elastic deformation, and the outer sealing surface acts as the first waterproof wall, which is sealed against the terminal block to prevent water from entering, and the inner sealing surface acts as the second waterproof wall to further prevent water from entering. Moreover, the provision of the groove is also conducive to causing greater elastic deformation at the inner sealing surface and the outer sealing surface, thereby improving the sealing performance.

[0098] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0099] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A sealed wiring device, characterized in that: include: Terminal blocks, gaskets and terminal box covers; The terminal block is provided with a terminal post and / or a thermal switch; The gasket is provided with a through area for the terminal and / or the thermal switch to pass through, and the gasket has a first sealing surface and a second sealing surface opposite to each other, and the first sealing surface and the second sealing surface are arranged around the through area; The junction box cover covers the terminal post and / or the thermal switch, the junction box cover is sealed and pressed against the second sealing surface, and the first sealing surface is sealed and pressed against the terminal seat; The junction box cover is provided with a plurality of first connection holes for connecting the wiring seat with the junction box cover, and a first reference plane where the axes of at least two of the first connection holes are located passes through the center of gravity of the junction box cover and / or the center of gravity of the gasket.

2. The sealed wiring device according to claim 1, characterized in that: A groove is provided on the first sealing surface, and the groove divides the first sealing surface into an inner sealing surface and an outer sealing surface surrounding the through area, and both the inner sealing surface and the outer sealing surface are sealed and pressed against the wiring seat.

3. The sealed wiring device according to claim 1, characterized in that: The gasket is provided with second connection holes corresponding to the first connection holes one by one, and the second reference plane where the axes of at least two of the second connection holes are located passes through the center of gravity of the gasket and / or the center of gravity of the junction box cover.

4. The sealed wiring device according to claim 3, characterized in that: The sealed wiring device also includes a plurality of connecting members, each of which corresponds to each of the first connecting holes one by one. The connecting members pass through the first connecting holes and the second connecting holes and are connected between the wiring seat and the wiring box cover. The connecting members exert a force on the wiring seat to seal it against the second sealing surface.

5. The sealed wiring device according to claim 1, characterized in that: A boss is arranged on one side of the gasket close to the junction box cover, the boss is arranged around the through area, the second sealing surface is arranged around the boss, and the outer wall of the boss is sealed and matched with the inner wall of the junction box cover.

6. The sealed wiring device according to claim 1, characterized in that: The junction box cover comprises a box cover body, the box cover body comprises a first arc portion, a second arc portion and a first main body portion, the first main body portion is connected between the first arc portion and the second arc portion, and the first main body portion is tangent to the first arc portion and the second arc portion; And / or, the gasket includes a gasket body, the first sealing surface and the second sealing surface are located on the gasket body, the gasket body includes a third arc portion, a fourth arc portion and a second main body portion, the second main body portion is connected between the third arc portion and the fourth arc portion, and the second main body portion is tangent to the third arc portion and the fourth arc portion.

7. The sealed wiring device according to claim 6, characterized in that: The junction box cover further comprises a first connection portion and a second connection portion connected to the box cover body, and the first connection hole is provided on the first connection portion and the second connection portion; When the gasket includes a gasket body, the gasket also includes a third connecting portion and a fourth connecting portion connected to the gasket body, and the second connecting hole is opened on the third connecting portion and the fourth connecting portion.

8. The sealed wiring device according to claim 7, characterized in that: The first connecting portion is tangent to the first arc portion, and the second connecting portion is tangent to the second arc portion; When the gasket includes a third connecting portion and a fourth connecting portion, the third connecting portion is tangent to the third arc portion, and the fourth connecting portion is tangent to the fourth arc portion.

9. The sealed wiring device according to claim 7, characterized in that: A first drainage groove is provided on one side of the first connection portion and the second connection portion close to the gasket, one end of the first drainage groove is connected to the outer edge of the junction box cover, and the other end is connected to the first connection hole; And / or, a second drainage groove is formed on one side of the third connection portion and the fourth connection portion close to the wiring seat, one end of the second drainage groove is connected to the extension of the gasket, and the other end is connected to the second connection hole.

10. A compressor, characterized in that: The compressor comprises a sealed terminal arrangement according to any one of claims 1 to 9.

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