Wiring waterproof structure of compressor

Abstract

The invention belongs to the technical field of compressors, and discloses a compressor wiring waterproof structure which comprises a shell sleeve, a box body, a box cover and an elastic sealing ring, the shell sleeve is used for containing a compressor, a mounting hole is formed in the side wall of the shell sleeve, a connector is mounted in the mounting hole, the box body is fixed to the shell sleeve, the connector extends into the box body, and the elastic sealing ring is arranged on the box cover. The outer edge of the box body is provided with an inserting part, the box body is connected with the inner side wall of the box cover in an inserting mode through the inserting part, the inner side wall of the box cover is provided with an embedding groove, the elastic sealing ring is embedded in the embedding groove, the end of the inserting part abuts against the elastic sealing ring, and the cable stretches into the box body and is electrically connected with the compressor through the connector. According to the compressor wiring waterproof structure provided by the invention, the insertion part is in insertion connection with the inner side wall of the box cover, and the insertion part abuts against the elastic sealing ring in the box cover, so that a double-layer waterproof sealing structure can be formed, and a reliable and effective waterproof effect is provided for the wiring post part arranged on the side of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a waterproof structure for compressor wiring. Background Art

[0002] At present, with the increasing design of the compressor displacement, the overall height of the compressor is also getting higher and higher. Due to the limit of the overall height, the terminal posts of the compressor need to be designed on the side to reduce the overall height. And due to the requirements of the working environment, the compressor needs to have a high waterproof level. Therefore, the design of the waterproof structure for the wiring of large-displacement and large-size compressors with side-mounted terminal posts has become the direction of efforts of technicians in the field. Summary of the Invention

[0003] The purpose of the present invention is to provide a waterproof structure for compressor wiring, which is applied to a compressor with side-mounted terminal posts and provides reliable and effective waterproofing for the side-mounted terminal post part of the compressor.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A waterproof structure for compressor wiring includes a shell sleeve, a box body, a box cover and an elastic sealing ring; wherein,

[0006] The shell sleeve is used to accommodate the working components of the compressor, and an installation hole is provided on the side wall of the shell sleeve, and a connector is installed in the installation hole;

[0007] The box body is fixed on the shell sleeve, the connector extends into the box body, and a plug-in part is provided on the outer edge of the box body;

[0008] The box body is plugged into the inner side wall of the box cover through the plug-in part, an embedding groove is provided on the inner side wall of the box cover, the elastic sealing ring is embedded in the embedding groove, and the end of the plug-in part abuts against the elastic sealing ring;

[0009] The cable extends into the box body and is electrically connected to the compressor through the connector.

[0010] Preferably, the size of the elastic sealing ring in the direction perpendicular to the inner side wall of the box cover is smaller than the width of the embedding groove.

[0011] Preferably, the first side of the bottom of the embedding groove faces the inner side wall of the box cover, and the second side of the bottom of the embedding groove faces away from the inner side wall of the box cover;

[0012] The bottom of the embedding groove includes a first groove bottom and a second groove bottom arranged in sequence from the first side to the second side. The first groove bottom is perpendicular to the inner side wall of the box cover, and the second groove bottom is inclined towards the direction close to the mouth of the embedding groove;

[0013] The included angle θ between the bottom of the first groove and the bottom of the second groove is set in the range of 5° - 50°.

[0014] Preferably, the length of the bottom of the first groove is set as L1, the thickness of the insertion part is set as L2, and L1 and L2 satisfy: L1 < L2.

[0015] Preferably, clamping joints are provided on both opposite sides of the box cover, and corresponding clamping grooves are provided on the box body, and the clamping joints are clamped in the corresponding clamping grooves.

[0016] Preferably, the clamping joint includes a first end face for abutting against the clamping groove, and the length L3 of the first end face satisfies: L3 > 1 mm;

[0017] The clamping joint further includes a second end face inclined in a direction away from the clamping groove, and the first end face and the second end face are connected by a fillet.

[0018] Preferably, a connecting boss is provided on the side wall of the shell sleeve, the connecting boss has a supporting plane, the mounting hole is opened on the supporting plane, and the box body is fixed on the supporting plane.

[0019] Preferably, a first hole part is opened in the insertion part, a second hole part is correspondingly opened on the box cover, the first hole part and the second hole part jointly enclose a first through hole, and the cable passes through the first through hole and extends into the box body.

[0020] Preferably, a sleeve is further included, the sleeve has a fixing part, and an insertion ring groove is opened on the outer side wall of the fixing part, the insertion ring groove is inserted into the first through hole, and the cable passes through the sleeve and extends into the box body.

[0021] Preferably, a plurality of elastic valves are provided at intervals on the inner peripheral wall of the sleeve, and the plurality of elastic valves jointly enclose a second through hole for the cable to pass through. The inner diameter of the sleeve is set as D1, the aperture of the second through hole is set as D2, and the outer diameter of the cable is set as D3. D1, D2, and D3 satisfy: D2 < D3 < D1.

[0022] Beneficial effects:

[0023] The waterproof structure for the wiring of the compressor provided by the present invention is such that the compressor can be accommodated in the housing sleeve, and the connector on the side of the compressor is fixedly connected to the mounting hole of the housing sleeve. The housing sleeve can initially isolate the working components of the compressor from the external environment. In addition, the box body is fixed to the housing sleeve, the box cover is covered on the box body, the connector extends into the box body, and the cable extends into the box body to achieve electrical connection with the compressor through the connector. The covering of the box body and the box cover can provide reliable and effective protection for the connector and achieve effective isolation from the external environment. Further, the insertion part of the box body is inserted into the inner side wall of the box cover, and the insertion part abuts against the elastic sealing ring inside the box cover, so that a double-layer waterproof sealing structure can be formed when the box body and the box cover are covered, effectively ensuring the waterproof sealing effect of the connector part, thereby preventing the connector from contacting external water vapor, and meeting the requirements of a relatively high waterproof level for the side-mounted compressor with large displacement and large-size terminal posts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the waterproof structure for the wiring of the compressor provided by the present invention;

[0025] Figure 2 is a schematic structural diagram of one perspective of the housing sleeve provided by the present invention;

[0026] Figure 3 is a schematic structural diagram of another perspective of the housing sleeve provided by the present invention;

[0027] Figure 4 is a schematic structural diagram of one perspective of the box body provided by the present invention;

[0028] Figure 5 is a schematic structural diagram of another perspective of the box body provided by the present invention;

[0029] Figure 6 is a schematic structural diagram of one perspective of the box cover provided by the present invention;

[0030] Figure 7 is a schematic structural diagram of another perspective of the box cover provided by the present invention;

[0031] Figure 8 is in the present invention Figure 7 is a schematic cross-sectional view in the A direction;

[0032] Figure 9 is a schematic cross-sectional view of the insertion and cooperation of the box body and the box cover provided by the present invention;

[0033] Figure 10 is in the present invention Figure 9 is a partial enlarged schematic view at B;

[0034] Figure 11 is a partial schematic view of the installation position of the elastic sealing ring provided by the present invention;

[0035] Figure 12 It is a schematic structural diagram of a perspective view of the casing provided by the present invention;

[0036] Figure 13 It is the present invention in Figure 12 The schematic cross-sectional view in the C direction.

[0037] In the figure:

[0038] 1. Shell casing; 101. Mounting hole; 11. Connecting boss; 111. Support plane; 12. Connector;

[0039] 2. Box body; 21. Insertion part; 211. First hole part; 22. Clamping groove; 23. Connecting hole;

[0040] 3. Box cover; 31. Embedded groove; 311. First groove bottom; 312. Second groove bottom; 32. Clamping head; 321. First end face; 322. Second end face; 323. Rounding; 33. Second hole part;

[0041] 4. Elastic sealing ring;

[0042] 5. Casing; 51. Fixing part; 511. Insertion ring groove; 52. Elastic valve; 53. Second perforation. Detailed implementation manners

[0043] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0044] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] This embodiment provides a waterproof structure for the compressor wiring. Refer to Figures 1 to 13 As shown, the waterproof structure for the compressor wiring includes a housing sleeve 1, a box body 2, a box cover 3 and an elastic sealing ring 4. Among them, the housing sleeve 1 is used to accommodate the working components of the compressor. An installation hole 101 is provided on the side wall of the housing sleeve 1, and a connector 12 is installed in the installation hole 101; the box body 2 is fixed on the housing sleeve 1, the connector 12 extends into the box body 2, and a plug-in portion 21 is provided on the outer edge of the box body 2; the box body 2 is plugged with the inner side wall of the box cover 3 through the plug-in portion 21. An embedding groove 31 is provided on the inner side wall of the box cover 3, the elastic sealing ring 4 is embedded in the embedding groove 31, and the end of the plug-in portion 21 abuts against the elastic sealing ring 4; the cable extends into the box body 2 and is electrically connected to the compressor through the connector 12.

[0048] In this embodiment, the working components of the compressor (such as the motor and the pump body) can be accommodated in the housing sleeve 1. The connector 12 (i.e., the terminal) on the side of the compressor is fixedly connected to the mounting hole 101 of the housing sleeve 1. The housing sleeve 1 can initially isolate the working components of the compressor from the external environment. In addition, the box body 2 is fixed on the housing sleeve 1, the box cover 3 is covered on the box body 2, the connector 12 extends into the box body 2, and the cable extends into the box body 2 to realize the electrical connection with the compressor through the connector 12. The covering of the box body 2 and the box cover 3 can provide reliable and effective protection for the connector 12 and achieve effective isolation from the external environment. Further, the insertion part 21 of the box body 2 is inserted into the inner side wall of the box cover 3, and the insertion part 21 abuts against the elastic sealing ring 4 inside the box cover 3, which can form a double-layer waterproof sealing structure when the box body 2 and the box cover 3 are covered, effectively ensuring the waterproof sealing effect of the connector 12 part, thus preventing the connector 12 from contacting external water vapor, and meeting the requirements of a higher waterproof grade for the side-mounted compressor with a large displacement and large-size terminal.

[0049] In this embodiment, the material of the elastic sealing ring 4 is set as rubber. Rubber has good sealing performance, low cost and is convenient for production.

[0050] In this embodiment, referring to Figures 2 to 4 As shown, the side wall of the housing sleeve 1 is provided with a connecting boss 11. The connecting boss 11 has a supporting plane 111, the mounting hole 101 is opened on the supporting plane 111, and the box body 2 is fixed on the supporting plane 111. Specifically, the supporting plane 111 can be attached to the corresponding mounting plane of the box body 2, so as to provide a reliable mounting space for the box body 2. Specifically, the box body 2 is correspondingly provided with a connecting hole 23, the connecting hole 23 is correspondingly arranged with the mounting hole 101, and the connector 12 passes through the mounting hole 101 and the connecting hole 23 and extends into the box body 2. Optionally, the supporting plane 111 and the corresponding mounting plane of the box body 2 can be fixed by welding operation.

[0051] Optionally, there is a clearance fit between the outer diameter of the insulating seat of the connector 12 in the mounting hole 101.

[0052] The specific structure of the connector 12 for electrically connecting the compressor and the cable is prior art.

[0053] In this embodiment, referring to Figures 4 to 11As shown, the dimension of the elastic sealing ring 4 in the direction perpendicular to the inner wall of the box cover 3 is smaller than the width of the groove 31. With such a setting, when installing the elastic sealing ring 4, the elastic sealing ring 4 is deformed by the extrusion of the groove 31 and will present a partially inclined posture. Thus, when the box cover 3 is assembled with the box body 2, the contact between the insertion part 21 of the box body 2 and the elastic sealing ring 4 changes from the overall surface contact at the end of the insertion part 21 to the contact with the inclined part of the elastic sealing ring 4 first. Therefore, the pressure of the elastic sealing ring 4 received from the end of the insertion part 21 can change from uniform distribution to most of the pressure concentrated on the inclined part of the elastic sealing ring 4. Thereby, the pressure between the insertion part 21 and the inclined part of the elastic sealing ring 4 can be enhanced and the sealing performance between the two can be improved, enhancing the effectiveness of the second-layer sealing structure.

[0054] Specifically, referring to Figure 11 As shown, the first side of the bottom of the groove 31 faces the inner wall of the box cover 3, and the second side of the bottom of the groove 31 faces away from the inner wall of the box cover 3; the bottom of the groove 31 includes a first groove bottom 311 and a second groove bottom 312 arranged in sequence from the first side to the second side. The first groove bottom 311 is perpendicular to the inner wall of the box cover 3, and the second groove bottom 312 is inclined towards the direction close to the opening of the groove 31; the range of the included angle θ between the first groove bottom 311 and the second groove bottom 312 is set to 5° - 50°. Specifically, a reasonable range needs to be set for the included angle θ between the first groove bottom 311 and the second groove bottom 312. If the included angle θ is set too small, the elastic sealing ring 4 is not inclined enough to change the pressure between the insertion part 21 and the elastic sealing ring 4 from uniform distribution to most of the pressure concentrated on the inclined part of the elastic sealing ring 4, and the sealing performance cannot be effectively improved further; if the included angle θ is set too large, the embedding effect of the elastic sealing ring 4 is poor and it is easy to come out. Therefore, setting the included angle θ within the range of 5° - 50° can not only ensure that the elastic sealing ring 4 has a certain reasonable slope to further improve the sealing performance when inserted with the insertion part 21, but also ensure the reliable embedding of the elastic sealing ring 4 and prevent the elastic sealing ring 4 from coming out of the groove 31.

[0055] Furthermore, the length of the first groove bottom 311 is set as L1, and the thickness of the insertion part 21 is set as L2, and L1 and L2 satisfy: L1 < L2. With such a setting, Figure 11 Taking the illustration in

[0056] In this embodiment, continue to refer to Figures 4 to 10As shown, the box cover 3 is provided with a clamping joint 32 on both opposite sides, and the box body 2 is provided with a clamping groove 22 correspondingly, and the clamping joint 32 is clamped in the corresponding clamping groove 22. Specifically, after the box cover 3 is covered on the box body 2, the clamping joint 32 is clamped with the corresponding clamping groove 22 to achieve reliable fixation between the box cover 3 and the box body 2, with a simple structure and reliable and stable connection.

[0057] Specific reference Figure 10 As shown, the clamping joint 32 includes a first end face 321 for abutting against the clamping groove 22, and the length L3 of the first end face 321 satisfies: L3>1mm. Specifically, the length of the side wall of the clamping groove 22 in the direction of the first end face 321 is slightly greater than the length of the first end face 321. The length of the first end face 321 should not be set too large, which will increase the size of the box body 2, and should not be set too small, which will affect the firmness and reliability of the clamping.

[0058] More specifically, the clamping joint 32 further includes a second end surface 322 inclined in a direction away from the clamping groove 22, and the first end surface 321 and the second end surface 322 are connected by a rounded corner 323. The rounded corner 323 facilitates the clamping and disassembly between the clamping joint 32 and the clamping groove 22.

[0059] In this embodiment, refer to Figures 4 to 6 As shown, the plug-in portion 21 is provided with a first hole portion 211, and the box cover 3 is correspondingly provided with a second hole portion 33. The first hole portion 211 and the second hole portion 33 are enclosed together to form a first through hole, and the cable passes through the first through hole and extends into the box body 2. In some other optional embodiments, the first through hole can be separately provided on the box body 2, or separately provided on the box cover 3, as long as it can ensure that the cable can extend into the box body 2.

[0060] In this embodiment, refer to Figures 12 to 13 As shown, the compressor wiring waterproof structure also includes a sleeve 5, the sleeve 5 has a fixing portion 51, and the outer wall of the fixing portion 51 is provided with a plug-in ring groove 511, the plug-in ring groove 511 is plugged with the first through hole, and the cable insertion sleeve 5 extends into the box body 2. By setting the sleeve, a reliable seal can be provided between the first through hole and the cable insertion part, further improving the overall waterproof performance. It is worth mentioning that the above-mentioned first through hole is set in the form of being enclosed by the first hole portion 211 and the second hole portion 33. This split and spliced ​​setting can be adapted to the plug-in ring groove 511, thereby realizing reliable installation of the sleeve 5 and preventing it from falling off.

[0061] Further, a plurality of elastic valves 52 are provided at intervals on the inner peripheral wall of the sleeve 5. The plurality of elastic valves 52 together enclose a second perforation 53 for the cable to pass through. The inner diameter of the sleeve 5 is set as D1, the aperture diameter of the second perforation 53 is set as D2, and the outer diameter of the cable is set as D3. D1, D2, and D3 satisfy: D2 < D3 < D1. Specifically, when the cable passes through the second perforation 53 and enters the interior of the box body 2, the plurality of elastic valves 52 are deformed. At this time, the aperture diameter of the second perforation 53 increases to the outer diameter of the cable, so that the cable can penetrate into the second perforation 53. The ends of the elastic valves 52 are in close contact with the outer surface of the cable, so as to be able to seal the penetration part of the cable reliably and effectively. After the cable is taken out, the outer diameter of the second perforation 53 can return to D2 under the reset action of the plurality of elastic valves 52.

[0062] Optionally, the material of the elastic valve 52 can be set as rubber.

[0063] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A compressor wiring waterproof structure, characterized in that: It comprises a shell (1), a box body (2), a box cover (3) and an elastic sealing ring (4); wherein: The shell (1) is used to accommodate the working parts of the compressor, and a mounting hole (101) is provided on the side wall of the shell (1), and a connector (12) is installed in the mounting hole (101); The box body (2) is fixed on the shell (1), the connector (12) extends into the box body (2), and the outer edge of the box body (2) is provided with a plug-in portion (21); The box body (2) is plugged into the inner side wall of the box cover (3) via the plug-in portion (21); the inner side wall of the box cover (3) is provided with an embedding groove (31); the elastic sealing ring (4) is embedded in the embedding groove (31); and the end of the plug-in portion (21) abuts against the elastic sealing ring (4); The cable extends into the box body (2) and is electrically connected to the compressor through the connector (12).

2. The compressor wiring waterproof structure according to claim 1, characterized in that: The dimension of the elastic sealing ring (4) in a direction perpendicular to the inner side wall of the box cover (3) is smaller than the width of the embedding groove (31).

3. The compressor wiring waterproof structure according to claim 2, characterized in that: The first side of the bottom of the embedding groove (31) is arranged toward the inner side wall of the box cover (3), and the second side of the bottom of the embedding groove (31) is arranged away from the inner side wall of the box cover (3); The groove bottom of the embedding groove (31) comprises a first groove bottom (311) and a second groove bottom (312) which are arranged in sequence from the first side to the second side, wherein the first groove bottom (311) is perpendicular to the inner side wall of the box cover (3), and the second groove bottom (312) is inclined in a direction close to the notch of the embedding groove (31); The angle θ between the first groove bottom (311) and the second groove bottom (312) is set in the range of 5°-50°.

4. The compressor wiring waterproof structure according to claim 3, characterized in that: The length of the bottom (311) of the first groove is set to L1, the thickness of the plug-in portion (21) is set to L2, and L1 and L2 satisfy: L1<L2.

5. The compressor wiring waterproof structure according to claim 1, characterized in that: The box cover (3) is provided with a clamping joint (32) on both opposite sides, and the box body (2) is provided with a corresponding clamping groove (22), and the clamping joint (32) is clamped in the corresponding clamping groove (22).

6. The compressor wiring waterproof structure according to claim 5, characterized in that: The clamping joint (32) comprises a first end surface (321) for abutting against the clamping groove (22), and a length L3 of the first end surface (321) satisfies: L3>1 mm; The clamping joint (32) further comprises a second end surface (322) arranged obliquely in a direction away from the clamping groove (22), and the first end surface (321) and the second end surface (322) are connected via a rounded corner (323).

7. The compressor wiring waterproof structure according to claim 1, characterized in that: The side wall of the shell (1) is provided with a connecting boss (11), the connecting boss (11) has a supporting plane (111), the mounting hole (101) is opened on the supporting plane (111), and the box body (2) is fixed on the supporting plane (111).

8. The compressor wiring waterproof structure according to claim 1, characterized in that: The plug-in portion (21) is provided with a first hole portion (211), and the box cover (3) is correspondingly provided with a second hole portion (33); the first hole portion (211) and the second hole portion (33) are together enclosed to form a first through-hole, and the cable is passed through the first through-hole and extends into the box body (2).

9. The compressor wiring waterproof structure according to claim 8, characterized in that: It also comprises a sleeve (5), the sleeve (5) having a fixing portion (51), the outer wall of the fixing portion (51) being provided with an inserting ring groove (511), the inserting ring groove (511) being inserted into the first through hole, and the cable is passed through the sleeve (5) and extends into the box body (2).

10. The compressor wiring waterproof structure according to claim 9, characterized in that: The inner wall of the sleeve (5) is provided with a plurality of elastic valves (52) at intervals, and the plurality of elastic valves (52) are together enclosed to form a second through hole (53) for the cable to pass through, the inner diameter of the sleeve (5) is set to D1, the aperture of the second through hole (53) is set to D2, and the outer diameter of the cable is set to D3, and D1, D2, and D3 satisfy: D2<D3<D1.

Images