CN113258374B

CN113258374B - Sealed terminal cover, upper cover assembly and compressor

Info

Publication number: CN113258374B
Application number: CN202110727925.6A
Authority: CN
Inventors: 龚沛; 邓燕
Original assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Current assignee: Panasonic Wanbao Appliances Compressor Guangzhou Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-09-20
Anticipated expiration: 2041-06-29
Also published as: CN113258374A

Abstract

A hermetic terminal cover includes a cover body; the cover body comprises a top cover, a side wall, a partition plate and a side plate; the side wall forms a semi-enclosed space with an opening around the top cover; the partition board is positioned in the semi-surrounding space and fixed with the side wall so as to divide the semi-surrounding space into a wiring accommodating area and a clamping installation area; the wiring accommodating area is formed by enclosing a top cover, a plate surface of one side of the partition plate facing the top cover and a side wall together; the clamping installation area is formed by the plate surface and the side wall of the partition plate, which is back to one side of the top cover, in a surrounding way; the partition board is provided with a lead-in hole for communicating the wiring accommodating area with the clamping mounting area; the side plate is arranged between the top cover and the partition plate; the surface of the side plate is provided with a groove; the partition board is provided with a forming through hole which is communicated with the groove. In addition, the invention also provides an upper cover assembly and a compressor using the sealed terminal cover. Compared with the prior art, the sealing terminal cover, the upper cover component and the compressor have the advantages of good sealing performance, small amount of used sealing glue and convenience and quickness in installation.

Description

Sealed terminal cover, upper cover subassembly and compressor

Technical Field

The invention relates to the field of sealing covers, in particular to a sealing terminal cover, an upper cover assembly and a compressor.

Background

Air conditioners, refrigerators, and the like often use a compressor to convert low pressure gas into high pressure gas for cooling. For the compressor, the main ways to connect it to an external power source are: the top of the compressor is provided with a binding post connected with a wiring end of a motor inside the compressor, one end of a power line connected with an external power supply is provided with a terminal, and the terminal is electrically connected with the binding post for supplying power. In addition, during the power supply process, the terminal needs to clamp the binding post and cannot be displaced or fall off relative to the binding post.

On the other hand, if moisture exists between the electrically connected terminal and the post, the leakage and short circuit may occur, which may affect the normal operation. However, in the refrigeration equipment, condensed water inevitably occurs in the compressor during use, so that the compressor is in a humid working environment, and therefore, the sealing and moisture prevention between the terminal and the binding post become the design key point. For this reason, in the prior art, a sealing terminal cover is generally arranged at the connection position of the terminal and the terminal, namely the top of the compressor, so as to prevent moisture and humidity from affecting the terminal and the terminal.

Referring to fig. 1 and 2, patent application No. CN201821344926.2 discloses a terminal sealing cover 8 and a terminal block 9. The post sealing cover 8 includes an upper plate 81, a middle plate 82, and a lower plate 83. Wherein the middle plate 82 surrounds the upper plate 81 and forms a semi-enclosed space having an opening at one side. The lower plate 83 is disposed in the semi-enclosed space and fixed to the middle plate 82. The side of the lower plate 83 facing the upper plate 81, the upper plate 81 and the middle plate 82 together form the wiring fixing area (not labeled) for accommodating the wiring terminal 9; the side of the lower plate 83 facing away from the upper plate 81 and the middle plate 82 jointly form a clamping fixing area (not shown) for covering the terminal sealing cover 8 on a terminal fixing seat (not shown) of a compressor. In the wire fixing area, a wire guiding opening 821 is provided on the middle plate 82 for inserting the wire connecting terminal 9 into the wire fixing area. A through hole 831 communicating the wiring fixing region and the engaging fixing region is formed on the lower plate 83, and a terminal (not shown) of the compressor is inserted into the wiring fixing region from the engaging fixing region through the through hole 831. A limiting plate 811 inclined toward the lower plate 83 is disposed on a side surface of the upper plate 81 facing the lower plate 83. The distance from the restriction plate 811 to the upper plate 81 in the insertion direction of the connection terminal 9 is gradually increased. The side surface of the wiring terminal 9 facing the upper plate 81 is provided with an elastic buckle 91 inclined towards the upper plate 81. When the wiring terminal is used, the wiring terminal 9 is inserted into the terminal sealing cover 8 from the line guide opening 821 until the elastic buckle 91 abuts against the limiting plate 811 to form a buckle structure so as to limit the movement of the wiring terminal 9 to the line guide opening 821, so that the wiring terminal 9 is prevented from falling off from the terminal sealing cover 8. The terminal sealing cap 8 is then fitted to the compressor together with the terminal 9, and the terminal of the compressor is inserted through the through hole 831 and electrically connected to the terminal 9. And finally, filling sealant into the connection fixing area and the connection position of the terminal sealing cover 8 and the terminal fixing seat for sealing.

In addition, the terminal sealing cover 8 is generally produced by injection molding. When the injection molding mold is used for mass production, a process hole 822 which is communicated with the wiring fixing area and is opposite to the line guide port 821 needs to be formed in the middle plate 82, and a slider insert for molding is inserted into the wiring fixing area from the process hole 822 so as to mold the inclined limiting plate 811. Accordingly, the process hole 822 may be sealed by filling a sealant during use.

It can be seen from above-mentioned terminal sealing cover that for making binding post be difficult to drop from the terminal sealing cover, the buckle structure of block about having set up between terminal sealing cover and the binding post among the prior art, nevertheless this type of buckle structure need provide the fabrication hole of slider mold insert business turn over when injection moulding mould production. When the sealant is filled, a large amount of sealant needs to be injected into the process hole, so that the using amount of the sealant and the filling workload are increased. And the inclined limiting plate and the wiring terminal form an included angle, so that the condition of incomplete sealant filling is easy to occur, and the sealing performance is influenced.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a hermetic terminal cover having good sealing performance and high fixing strength, and capable of reducing the amount of sealant to be filled.

The technical scheme adopted by the invention is as follows:

a hermetic terminal cover includes a cover body; the cover body comprises a top cover, a side wall, a partition plate and a side plate; the side wall forms a semi-enclosed space with an opening around the top cover; the partition board is positioned in the semi-surrounding space and fixed with the side wall so as to divide the semi-surrounding space into a wiring accommodating area and a clamping installation area; the wiring accommodating area is formed by the top cover, the plate surface of one side of the partition plate, which faces the top cover, and the side wall in a surrounding mode; the clamping installation area is formed by the plate surface of one side of the clapboard back to the top cover and the side wall in a surrounding mode; the partition board is provided with a lead-in hole for communicating the wiring accommodating area with the clamping mounting area; the side plate is arranged between the top cover and the partition plate; the surface of the side plate is provided with a groove; and a forming through hole is formed in the partition plate and communicated with the groove.

Compared with the prior art, the sealing terminal cover has the advantages that the forming through hole for forming the clamping structure in the forming process is arranged in the sealing terminal cover, so that the connection mode of the buckle is kept, the lead terminal is not easy to fall off, the filling amount and the filling steps of the sealing glue are reduced, and the cost and the working hour are saved. And the sealing performance is high because through holes communicated with the outside are reduced.

Further, follow the baffle is directional in the direction of top cap, the height of recess is less than the height of curb plate reduces sealed filling volume of gluing, and sealed glue flows along the curb plate, fills up easily.

Furthermore, in the direction that the partition board points to the top cover, the height of the groove is equal to that of the side plate, so that clamping and fastening are ensured, and the subsequent sealant filling process is ensured to be smoothly carried out.

Further, the recess depth of the groove on the side plate is 0.5 to 5mm, so that the mold production is facilitated while a certain fastening force is ensured.

The wire terminal penetrates through a wire inserting space formed by the side plates and is clamped in the groove in the side plate. The limiting protrusion and the concave part are mutually clamped to form a buckle structure.

Further, the wire terminal includes two cohesion shell fragments that set up relatively, cohesion shell fragment passes the plug wire space that the curb plate formed, spacing arch sets up respectively cohesion shell fragment's the outside and block are in the recess on the curb plate, be located two cohesion shell fragments from leading the male terminal post of jack and electrically conduct and pass the centre gripping hole, realize the terminal to the limiting displacement of wire terminal, wire terminal drops from the lid body when preventing to circular telegram.

Furthermore, the top cover is provided with a blind hole opposite to the guide connection hole on the surface of the partition board, and under the action of the blind hole, the binding post is inserted into the cover body and has a certain insulation distance with the top cover, so that the safety in use is improved.

In addition, the invention also provides an upper cover assembly, which adopts the technical scheme that:

an upper cover assembly comprises the sealing terminal cover and a sealing ring; the sealing ring is arranged at an opening of the clamping installation area. Compared with the prior art, the upper cover assembly is provided with the sealing ring at the opening of the cover body, so that moisture is prevented from entering from the opening, the sealing performance is further improved, and the dustproof and waterproof effects are achieved.

Further, an annular groove is formed in the side wall of the cover body, which faces away from the top cover; the sealing ring comprises a large ring and a small ring which are overlapped in axis and are arranged in a stacked mode; the small ring is arranged in the annular groove. The annular groove and the small ring are mutually clamped, so that the stability of the installation of the sealing ring on the cover body is improved, and convenience is provided for the installation of the compressor.

In addition, the invention also provides a compressor, which adopts the technical scheme as follows:

a compressor comprises the upper cover assembly and a shell; the shell is provided with a wiring fixing seat; the clamping installation area of the upper cover assembly is clamped on the wiring fixing seat; the sealing ring is positioned between the wiring fixing seat and the cover body to seal. Compared with the prior art, the compressor has the advantages of good sealing performance, small amount of used sealing glue, convenience and quickness in installation and multiple installation and fixing structures.

For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic cross-sectional view illustrating a terminal sealing cap according to the prior art;

fig. 2 is a schematic structural view of a connecting terminal in the prior art;

fig. 3 is a schematic view showing an overall structure of the hermetic terminal cover of the present invention when it is closed to the compressor;

FIG. 4 is a partial exploded view of the upper cover assembly of the present invention when closed to the compressor;

FIG. 5 is a schematic view of the structure of the hermetic terminal cover according to the present invention;

FIG. 6 is a front view of the cover of the present invention;

FIG. 7 is a cross-sectional projection of an embodiment taken along line A-A of FIG. 6;

FIG. 8 is a cross-sectional projection of an embodiment taken along line B-B of FIG. 6;

FIG. 9 is a cross-sectional projection of an embodiment taken along line C-C of FIG. 6;

FIG. 10 is a projection of an embodiment taken along the direction D of FIG. 6;

FIG. 11 is a cross-sectional projection view of another embodiment taken along line A-A of FIG. 6;

FIG. 12 is a sectional projection of another embodiment taken along line C-C of FIG. 6;

fig. 13 is a schematic view of a structure of a wire terminal.

Detailed Description

Referring to fig. 3 to 5, the hermetic terminal cover 1 of the present invention is covered on the terminal fixing base 41 at the top of the compressor 4, and includes a cover 10 and a wire terminal 20 inserted into the cover 10.

Referring to fig. 6 to 12, the cover 10 includes a top cover 11, a sidewall 12, a partition 13 and a side plate 14. The side wall 12 surrounds the top cover 11 and forms a half enclosed space having an opening at one side thereof. The partition 13 is located in the semi-enclosed space and is fixed to the side wall 12. The partition 13 divides the semi-enclosed space into a wiring receiving area (not labeled) for receiving the wire terminal 20 and a clamping mounting area (not labeled) for clamping on the terminal fixing seat 41. The wiring accommodating area is defined by the top cover 11, the plate surface of the partition plate 13 facing one side of the top cover 11 and the side wall 12. The clamping installation area is defined by the plate surface of the partition plate 13 on the side back to the top cover 11 and the side wall 12, and the opening of the semi-enclosed space is located in the clamping installation area.

The side plate 14 is connected between the top cover 11 and the partition plate 13. Preferably, the number of the side plates 14 is two or more, and the plate surfaces of the side plates are perpendicular to the plate surface of the partition plate 13. A wire inserting space (not labeled) is formed between the two adjacent side plates 14, the top cover 11 and the partition plate 13. The side wall 12 is provided with a terminal insertion opening 121 communicated with the wiring accommodating area, and the terminal insertion opening 121 is located between the two adjacent side plates 14. The wire terminal 20 is inserted into the insertion space from the terminal insertion opening 121 and slid between the both side plates 14. In the wire insertion space, a groove 141 is provided on a side of the side plate 14 away from the terminal insertion opening 121, and the groove 141 is located on a side surface of the side plate 14 facing the wire terminal 20. Preferably, the grooves 141 are formed on the opposite sides of the adjacent two side plates 14. Referring to fig. 7 to 10, in an embodiment, the partition 13 is provided with a forming through hole 132 communicating the wire receiving area and the fastening mounting area, the forming through hole 132 extends from the partition 13 to the side plate 14 to form the groove 141 on the surface of the side plate 14, and the forming through hole 132 is communicated with the groove 141.

In the direction from the partition board 13 to the top cover 11, the height H of the groove 141 is smaller than the height of the side board 14, that is, the height H of the groove 141 is smaller than the distance H between the top cover 11 and the partition board 13, and the depression depth of the groove 141 on the surface of the side board 14 is smaller than the thickness of the side board 14, so that the thickness of the side board 14 where the groove 141 is arranged is smaller than the thickness thereof; the recess 141 is in the sunken degree of depth on the curb plate 14 face is 0.5 to 5mm, preferably, is 2mm to 4mm, when guaranteeing to have certain fastening force, the mould production of being convenient for, moreover wire terminal 20 block is in difficult the removal takes place behind the recess 141, guarantees going on of sealed glue filling. Referring to fig. 11 and 12, in another embodiment, the forming through hole 132 extends to the top cover 11, the height h of the groove 141 is equal to the height of the side plate 14, the depth of the recess 141 on the surface of the side plate 14 is equal to the thickness of the side plate 14, and the wire insertion spaces are communicated with each other.

The partition plate 13 is provided with a connection guiding hole 131 for communicating the connection accommodating area and the clamping mounting area, and the connection guiding hole 131 is located between the two side plates 14. The terminal (not shown) of the compressor 4 enters the terminal receiving area from the fastening installation area through the guide hole 131 and is electrically connected to the lead terminal 20. Preferably. A guide connection hole 131 is formed in each wire insertion space, and the guide connection hole 131 is located at a side close to the groove 141. Further, a blind hole 111 is formed in the side surface of the top cover 11 facing the partition plate 13, and the blind hole 111 is opposite to the guide connection hole 131; preferably, the axes of the blind hole 111 and the guide connection hole 131 are coincident with each other, and the hole diameter is equivalent, and after the terminal is inserted into the guide connection hole 131, a certain insulation distance is kept between the terminal and the top cover 11. In one embodiment, the number of the side plates 14 is 4, and 3 wire insertion spaces with parallel extension directions are formed, and each wire insertion space is provided with a terminal insertion opening 121, two opposite grooves 141, a guide connection hole 131 and a blind hole 111.

Referring to fig. 13, the wire terminal 20 includes a body 21, and a wire connecting end 22 and a fixing end 23 respectively located at two ends of the body 21. The wire connection terminal 22 is fixed and electrically connected to a power line (not shown) by means of welding or the like. The body 21 comprises two oppositely-arranged clasping elastic sheets 211, a clamping hole 212 positioned between the two clasping elastic sheets 211 and a limiting protrusion 213 positioned on the outer side of the clasping elastic sheet 211. The binding post passes between the two clasping spring pieces 211 and passes through the clamping hole 212. The stopper protrusion 213 protrudes outward from the tab 311. Preferably, the outer sides of the two clasping elastic sheets 211 are respectively provided with a relative limit bulge 213; further, the limiting protrusion 213 is located at a side close to the fixing end 23. Further, the distance between the two clasping elastic sheets 211 is greater than or equal to the distance between the two adjacent side plates 14. When the wire terminal 20 is inserted into the cover 10, the fixed end 23 faces the terminal insertion opening 121, and the two clasping elastic pieces 211 elastically deform and slide on the side plate 14 until the limiting protrusion 213 is clamped into the groove 141 to form a buckle structure for preventing the wire terminal 20 from falling off. Preferably, in a direction from the partition plate 13 to the top cover 11, the height of the groove 141 is greater than the height of the limiting protrusion 213, so as to reduce collision between the limiting protrusion 213 and the top cover 11, and therefore, after the limiting protrusion 213 is engaged with the groove 141, the wire terminal 20 is not easy to slightly move relative to the cover 10, thereby ensuring engagement and fastening, and facilitating a subsequent sealant filling process. In one embodiment, the body 21 further includes a connecting plate 214 connected between the two clasping elastic pieces 211, the clamping hole 212 is formed in the connecting plate 214, when the wire terminal 20 is inserted into the cover 10, the connecting plate 214 faces or faces away from the top cover 11, and the wire terminal 20 can be mounted by turning the wire terminal up and down, so that the mounting convenience is improved. Further, the top cover 11 is provided with a positioning convex strip 112 protruding towards the partition plate 13, and the blind hole 111 is arranged on the positioning convex strip 112; when the wire terminal 20 is inserted into the cover 10, the positioning protruding strips 112 prop against the connecting plate 214, so that the wire terminal 20 is pressed, the connection stability is enhanced, and the flowing of the sealant is facilitated.

Further, the invention also provides an upper cover assembly 2, wherein the upper cover assembly 2 comprises the sealing terminal cover 1 and the sealing ring 3. The seal ring 3 is located at an opening of the engagement mounting region and between the seal terminal cover 1 and the compressor 4 to seal the engagement mounting region. In one embodiment, the seal ring 3 comprises a large ring 31 and a small ring 32, the axes of which are coincident and are stacked, the inner diameter of the small ring 32 is greater than or equal to the inner diameter of the large ring 31, and the inner diameter of the large ring 31 is less than or equal to the outer diameter of the terminal fixing seat 41; an annular groove 122 is formed in the side surface, facing away from the top cover 11, of the side wall 12 of the cover body 10, and the inner diameter of the annular groove 122 is equal to the inner diameter of the small ring 32; in the radial direction of the small ring 32, the width of the annular groove 122 is equal to or less than the width of the small ring 32. When installed, the small ring 32 is inserted into the annular groove 122 until the side wall 12 abuts against the small ring 32. Then the large ring 31 is sleeved on the terminal fixing seat 41 and the upper cover assembly 2 is pressed towards the compressor 4 until the compression is carried out. Preferably, the cover 10 further includes a bottom plate 15, the bottom plate 15 surrounds the side wall 12 facing away from the top cover 11, the side wall 12 is located between the top cover 11 and the bottom plate 15, and the annular groove 122 is opened on the bottom plate 15. The sealing ring 3 can reduce the gap between the sealing terminal cover 1 and the terminal fixing seat 41, and the bottom plate 15 increases the contact area with the compressor 4, thereby improving the sealing performance.

The invention also provides a compressor, which comprises a shell and an upper cover component arranged on the shell in a covering mode; a pump body and a motor assembly are arranged in the shell; the upper cover assembly 2 is any one of the above assembly structures.

Compared with the prior art, the sealing terminal cover provided by the invention has the advantages that the forming through holes used for the forming process are arranged in the cover body, the through holes communicated with the outside are reduced, the using amount of the sealant is reduced on the premise of ensuring that the stability of connection between the wire terminal and the binding post is not influenced, the cost and the working hour are saved, and the sealing property is improved. Simultaneously, improve the leakproofness of the upper cover subassembly of this sealed terminal cover and compressor, and the stability of during operation, reach better dustproof and waterproof's effect. And has certain insulation distance and good safety.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.

Claims

1. A hermetic terminal cover includes a cover body; the cover body comprises a top cover, a side wall, a partition plate and a side plate; the side wall forms a semi-enclosed space with an opening around the top cover; the partition board is positioned in the semi-surrounding space and fixed with the side wall so as to divide the semi-surrounding space into a wiring accommodating area and a clamping installation area; the wiring accommodating area is formed by the top cover, the plate surface of one side of the partition plate, which faces the top cover, and the side wall in a surrounding mode; the clamping installation area is formed by the plate surface of one side of the clapboard back to the top cover and the side wall in a surrounding mode; the partition board is provided with a lead-in hole for communicating the wiring accommodating area with the clamping mounting area; the side plate is arranged between the top cover and the partition plate; the method is characterized in that: the surface of the side plate is provided with a groove; and the partition board is provided with a forming through hole which is communicated with the groove.

2. The hermetic terminal cover according to claim 1, wherein: in the direction from the partition board to the top cover, the height of the groove is smaller than that of the side plate.

3. The hermetic terminal cover according to claim 1, wherein: the height of the groove is equal to that of the side plate in the direction from the partition plate to the top cover.

4. The hermetic terminal cover according to claim 1, wherein: the depth of the recess of the groove on the side plate is 0.5 to 5 mm.

5. The hermetic terminal cover according to any one of claims 1 to 4, wherein: the wire terminal penetrates through a wire inserting space formed by the side plates and is clamped in the groove in the side plate.

6. The hermetic terminal cover according to claim 5, wherein: the wire terminal comprises two oppositely-arranged clasping elastic sheets, the clasping elastic sheets penetrate through a wire inserting space formed by the side plates, and the limiting protrusions are arranged on the outer sides of the clasping elastic sheets and clamped in the grooves in the side plates respectively.

7. The hermetic terminal cover according to claim 6, wherein: and a blind hole which is opposite to the guide connecting hole is formed in the surface of the top cover facing the partition plate.

8. An upper cover assembly, comprising: comprising the hermetic terminal cover according to any one of claims 1 to 7 and a seal ring; the sealing ring is arranged at an opening of the clamping installation area.

9. The lid assembly of claim 8, wherein: an annular groove is formed in the side wall of the cover body, which faces away from the top cover; the sealing ring comprises a large ring and a small ring which are overlapped in axis and are arranged in a stacked mode; the small ring is arranged in the annular groove.

10. A compressor, characterized by: comprising the cover assembly and the housing as claimed in any one of claims 8 and 9; the shell is provided with a wiring fixing seat; the clamping installation area of the upper cover assembly is clamped on the wiring fixing seat; the sealing ring is positioned between the wiring fixing seat and the cover body to seal.