Starting relay

Abstract

The utility model belongs to the technical field of compressor electrical safety protection, and discloses a starting relay, which comprises a relay body and a curing adhesive layer, and the curing adhesive layer covers the upper surface of a top cover of the relay body. Wherein the lower surface of the curing adhesive layer extends towards the assembling gap of the relay body so as to seal and block the assembling gap in the relay body; according to the utility model, the upper surface of the top cover of the relay body is covered with the curing adhesive layer, and the lower surface of the curing adhesive layer extends towards the assembling gap of the relay body, so that the assembling gap in the relay body is sealed and blocked by using the curing adhesive layer, and the sealing treatment of the relay is formed; the internal contact switch is isolated from the combustible or inflammable refrigerant, and the danger of explosion caused by the relay is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical safety protection of compressors, and in particular relates to a starting relay and a sealing tool for the starting relay. Background Art

[0002] With the continuous improvement of environmental protection requirements, more and more flammable or even combustible refrigerants are used in refrigeration systems such as air conditioners, mobile cold chains and supermarket island cabinets, which increases the possibility of accidents such as explosions and fires caused by refrigerant leakage. Among them, the key causes of refrigerant explosions, fires and other accidents are: leakage of flammable or even combustible refrigerants and electric sparks generated by electrical equipment in the refrigeration system.

[0003] At present, in order to increase the starting capacity of the refrigeration system, a starting capacitor is often set and a starting relay is equipped; and the existing starting relay usually includes a housing 101, a cover plate 102, a contact switch and a plug 104, as shown in the attached figure. Figure 1 As shown; wherein, the shell 101 and the cover plate 102 cooperate to form a relay housing, the contact switch is arranged in the relay housing, and the insert 104 is arranged through the cover plate 102; due to the presence of assembly gaps 105 between the shell 101 and the cover plate 102 and between the cover plate 102 and the insert 104, leaked flammable or inflammable refrigerant can directly enter the interior of the conductive container housing, and it is very easy to interact with the electric sparks generated by the action of the contact switch, causing an explosion or fire accident; however, the existing assembly means cannot completely eliminate the assembly gap of the starting capacitor, and the sealing treatment of the assembly gap is relatively difficult and the treatment efficiency is low. Utility Model Content

[0004] In response to the technical problems existing in the prior art, the utility model provides a starting relay and a sealing tool for the starting relay to solve the problem that the existing assembly means cannot completely eliminate the assembly gap of the starting capacitor, and the sealing treatment of the assembly gap is difficult and the treatment efficiency is low.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a starting relay, comprising a relay body and a cured adhesive layer, wherein the cured adhesive layer covers the upper surface of the top cover of the relay body; wherein the lower surface of the cured adhesive layer extends toward the assembly gap of the relay body to seal the assembly gap in the relay body.

[0007] Furthermore, the thickness of the cured adhesive layer is 2-3 mm.

[0008] The utility model also provides a sealing tool for starting a relay, comprising a tool base and a sealing retaining ring; the top surface of the tool base is a horizontal surface, and the relay to be sealed is mounted on the top surface of the tool base; wherein the cover plate of the relay to be sealed is arranged upward;

[0009] The sealing retaining ring is sleeved around the top of the housing of the relay to be sealed, and the inner wall of the sealing retaining ring and the upper surface of the cover plate of the relay to be sealed form a glue pouring area; wherein, the glue pouring area is used for pouring sealant.

[0010] Furthermore, a relay mounting groove is provided on the top surface of the tooling base, and the shape of the relay mounting groove matches the shape of the bottom end of the shell of the relay to be sealed; wherein the bottom end of the shell of the relay to be sealed is fitted in the relay mounting groove.

[0011] Furthermore, a positioning hole is provided on one side of the bottom of the relay installation slot, and the positioning hole matches the housing mounting hole of the relay to be sealed and is detachably connected via a positioning piece.

[0012] Furthermore, the sealing retaining ring is a hollow cylindrical structure with upper and lower openings, and the cross-sectional dimensions of the sealing retaining ring are adapted to the cross-sectional dimensions of the top end of the outer shell of the relay to be sealed; wherein, the lower end of the sealing retaining ring is sealed and sleeved around the top end of the outer shell of the relay to be sealed, and the upper end of the sealing retaining ring extends above the cover plate of the relay to be sealed.

[0013] Furthermore, the extension length of the upper end of the sealing retaining ring is greater than the extension length of the plug of the relay to be sealed.

[0014] Furthermore, the thickness of the sealant poured into the glue pouring area is 2-3 mm.

[0015] Furthermore, the sealant is a curable insulating sealant.

[0016] Furthermore, the relay to be sealed is a starting relay for a refrigeration compressor.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The starting relay provided by the utility model covers the upper surface of the top cover of the relay body with a cured adhesive layer, and extends the lower surface of the cured adhesive layer toward the assembly gap of the relay body, so that the assembly gap in the relay body is sealed by the cured adhesive layer, thereby forming a sealing treatment for the relay, isolating the internal contact switch from the flammable or combustible refrigerant, and eliminating the risk of explosion caused by the relay.

[0019] The sealing tool for starting a relay provided by the present invention sets a sealing retaining ring around the top of the shell of the relay to be sealed, and forms a glue pouring area by enclosing the inner wall of the sealing retaining ring and the upper surface of the cover plate of the relay to be sealed. By pouring sealant in the glue pouring area, the poured sealant enters the assembly gaps between the shell and the cover plate, and between the cover plate and the insert, thereby forming a sealing treatment for the relay, isolating the internal contact switch of the relay from the flammable or inflammable refrigerant, and eliminating the risk of explosion caused by the relay; secondly, the relay to be sealed is mounted on the horizontal top surface of the tool base to ensure the uniformity of the sealant pouring thickness; the tool has a simple structure and is easy to operate, which effectively improves the efficiency of sealing the assembly gap of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an existing starting relay;

[0021] Figure 2 A schematic diagram of the structure of the starting relay provided in Example 1;

[0022] Figure 3 A schematic diagram of the overall result of a sealing tool for starting a relay provided in Example 2;

[0023] Figure 4 A top view of a sealing tool for starting a relay provided in Example 2 in use.

[0024] Among them, 10 relay body, 20 cured glue layer; 1 tooling base, 2 sealing retaining ring; 11 relay mounting slot; 100 relay to be sealed; 200 glue filling area; 300 sealant; 101 housing, 102 cover, 103 housing mounting hole, 104 insert, 105 assembly gap. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] Example 1

[0027] As attached Figure 2As shown, this embodiment 1 provides a starting relay, including a relay body 10 and a cured adhesive layer 20; the relay body 10 is a starting relay for a refrigeration compressor; the cured adhesive layer 20 covers the upper surface of the top cover of the relay body 10, and is used to seal the assembly gap in the relay body 10; wherein, the assembly gap in the relay body 10 includes the assembly gap between the outer shell and the cover plate in the relay body 10, and the assembly gap between the cover plate and the insert in the relay body 10.

[0028] Specifically, the upper surface of the cured adhesive layer 20 is lower than the effective extension height of the plug in the relay body 10 to ensure that the normal use function of the plug is not affected; the lower surface of the cured adhesive layer 20 extends toward the assembly gap of the relay body 10 to seal the assembly gap in the relay body 10.

[0029] In this embodiment 1, the cured adhesive layer 20 is formed by pouring and curing a sealant, and the sealant is a curable insulating sealant; preferably, the thickness of the cured adhesive layer 20 is 2-3 mm.

[0030] The starting relay described in this embodiment 1 is formed by covering the upper surface of the top cover of the relay body with a cured adhesive layer, and extending the lower surface of the cured adhesive layer toward the assembly gap of the relay body, so as to utilize the cured adhesive layer to seal the assembly gap in the relay body, thereby forming a sealing treatment for the relay, isolating the internal contact switch from the flammable or flammable refrigerant, and eliminating the risk of explosion caused by the relay.

[0031] Example 2

[0032] This embodiment 2 provides a sealing tool for a starting relay to seal the assembly gap in the starting relay for a refrigeration compressor; specifically, it is used to seal the relay body described in the above embodiment 1 to obtain the starting relay described in the above embodiment 1.

[0033] As attached Figure 3-4 As shown, the sealing tool for starting the relay includes a tool base 1 and a sealing retaining ring 2.

[0034] The tooling base 1 is a rectangular table structure, and the top surface of the tooling base 1 is a horizontal plane; the relay 100 to be sealed is installed on the top surface of the tooling base 1, and the cover 102 of the relay 100 to be sealed is set upward; wherein, the relay 100 to be sealed is a starting relay for a refrigeration compressor; specifically, a relay mounting groove 11 is provided on the top surface of the tooling base 1, and the shape of the relay mounting groove 11 matches the shape of the bottom end of the shell 101 of the relay 100 to be sealed; wherein, the notch of the relay mounting groove 11 is connected to the top surface of the tooling base 1, and the bottom of the relay mounting groove 11 extends toward the bottom surface of the tooling base 1.

[0035] The bottom end of the housing 101 of the relay 100 to be sealed is fitted in the relay mounting groove 11, so that the housing 101 is limited and fixed by the relay mounting groove 11, thereby ensuring the stability of the relay 100 to be sealed during the subsequent pouring of sealant. At the same time, the top surface of the tooling base 1 is set to a horizontal plane to ensure the surface flatness of the sealant during the subsequent pouring of the sealant and to ensure that the sealant can fill and seal all assembly gaps on the cover plate 102.

[0036] A positioning hole is provided on one side of the bottom of the relay mounting groove 11, and the positioning hole matches the housing mounting hole 103 of the relay 100 to be sealed and is detachably connected via a positioning piece; wherein, one end of the positioning piece fits and is inserted into the housing mounting hole 103, and the other end of the positioning piece is inserted into and fixed in the positioning hole; preferably, the positioning piece is a screw.

[0037] The sealing ring 2 is sleeved around the top of the housing 101 of the relay 100 to be sealed, and the inner wall of the sealing ring 2 and the upper surface of the cover 102 of the relay 100 to be sealed form a glue pouring area 200, which is used for pouring sealant 300.

[0038] Specifically, the sealing retaining ring 2 is a hollow cylindrical structure with upper and lower openings, the cross-sectional shape of the sealing retaining ring 2 matches the cross-sectional shape of the top end of the housing 101, and the cross-sectional size of the sealing retaining ring 2 is adapted to the cross-sectional size of the top end of the housing 101; wherein, the lower end of the sealing retaining ring 2 is sealed and sleeved around the top end of the housing 101, and the upper end of the sealing retaining ring 2 extends to the top of the cover plate 102, and then the upper end inner wall of the sealing retaining ring 2 and the upper surface of the cover plate 102 are combined to form a glue-filling area 200 that is surrounded on all sides and open at the top; preferably, the sealing retaining ring 2 is made of metal or hard plastic, and the upper end extension length of the sealing retaining ring 2 is greater than the protruding length of the plug 104 of the relay 100 to be sealed, so that it can be disassembled and reused after the sealant 300 is poured.

[0039] The thickness of the sealant 300 poured into the glue-filling area 200 is 2-3 mm, and the sealant 300 is a curable insulating sealant.

[0040] Working principle:

[0041] The working principle of the sealing tool described in this embodiment 2 is as follows: the relay 100 to be sealed is placed in the relay mounting groove 11 of the tool base 1, and the relay 100 to be sealed is detachably fixedly connected to the tool base 1 using a positioning piece; then, a sealing ring 2 is mounted on the top of the housing 101 of the relay 100 to be sealed, so as to form a glue injection area 200 above the cover plate 102 of the relay 100 to be sealed using the sealing ring 2; then, a sealant 300 is injected into the glue injection area 200; finally, after the sealant 300 is cured, the relay is removed from the tool base 1, and the sealing ring 2 is removed, thereby completing the sealing process of the relay.

[0042] In this embodiment 2, a sealing retaining ring is set around the top of the housing of the relay to be sealed, and the inner wall of the sealing retaining ring and the upper surface of the cover plate of the relay to be sealed are used to form a glue-filling area. A curable insulating sealant is used to seal the gaps at the joint of the relay housing and the position where the plug extends, so that the relay contacts are isolated from the flammable and combustible refrigerant, thereby eliminating the risk of explosion; the refrigeration system using the potted starting relay can isolate its contacts from the flammable and combustible refrigerant, eliminating the risk of explosion caused by the relay.

[0043] The starting relay and the sealing tooling for the starting relay described in the utility model adopt the existing relay, use the tooling base to fix the relay, and set a sealing retaining ring on the top of the relay shell. By filling the sealant in the filling area formed by the sealing retaining ring, the utility model has the advantages of simple structure, easy operation, low cost, good sealing effect and high sealing processing efficiency.

[0044] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes within the technical scope disclosed by the present invention, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field.

Claims

1. A starting relay, characterized in that: The invention comprises a relay body (10) and a cured adhesive layer (20), wherein the cured adhesive layer (20) covers the upper surface of the top cover of the relay body (10); wherein the lower surface of the cured adhesive layer (20) extends toward the assembly gap of the relay body (10) to seal the assembly gap in the relay body (10).

2. A starting relay according to claim 1, characterized in that: The thickness of the cured adhesive layer (20) is 2-3 mm.

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