CN217029296U - Compressor end cover assembly and scroll compressor - Google Patents

Abstract

The utility model discloses a compressor end cover assembly and a scroll compressor, wherein the end cover assembly comprises: the compressor end cover is provided with a compressor wiring terminal; the wiring terminal protection box is covered above the compressor wiring terminal and is hermetically matched with the compressor end cover; the elastic gasket is arranged at the joint between the wiring terminal protection box and the compressor end cover; the elastic gasket is of a layer structure of a rubber layer wrapping a metal material layer, and at least one convex rib protruding towards the side of the wiring terminal protection box is formed on the surface of the layer structure; the convex rib can generate elastic deformation under the pressure of the terminal protection box, so that the sealing surface of the convex rib is tightly attached to the contact surface of the compressor end cover and the terminal protection box. The compressor end cover assembly can realize dust prevention, water prevention and refrigerant prevention. The power line is protected, fatigue fracture is prevented, the electric leakage risk is reduced, and high-grade shell protection and electrical safety protection are realized.

Description

Compressor end cover assembly and scroll compressor

Technical Field

The utility model belongs to the technical field of scroll compressor sealing, and particularly relates to a compressor end cover assembly and a scroll compressor.

Background

Currently, the external power supply of the scroll compressor is usually connected to the terminal of the compressor through a socket. The protection boxes are needed to protect parts around power lines, sockets and wiring terminals, electrical safety protection is very important, and how to effectively realize the waterproof and sealing of wiring assemblies becomes an important problem.

It is now common to use an end face rubber gasket seal in conjunction with a rubber plug seal to achieve the target level of protection for the compressor as shown in figure 1. With the rapid development of the new energy automobile industry, the following problems exist at present: (1) under the conditions of stress application and pressurization, the gasket has large deformation amount, is difficult to control, greatly increases the risks of fracture and failure and is easy to generate the risk of electric leakage; (2) the rubber buffer has certain deflection, and after compressor department environment amplitude reached the certain degree, the rubber buffer took place to warp, and the gap grow between power cord and the rubber buffer hole, the water droplet gets into the inside and binding post contact of insulating socket along the gap, takes place the danger of electric leakage, and current structure can't satisfy higher technical requirement (shell protection level IP 67).

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the utility model proposes a compressor end cover assembly comprising:

the compressor end cover is provided with a compressor wiring terminal;

the wiring terminal protection box is covered above the compressor wiring terminal and is hermetically matched with the compressor end cover;

the elastic gasket is arranged at the joint between the wiring terminal protection box and the compressor end cover; the elastic gasket is of a layer structure of a rubber layer wrapping a metal material layer, and at least one convex rib protruding towards the side of the wiring terminal protection box is formed on the surface of the layer structure; the convex rib can generate elastic deformation under the pressure of the terminal protection box, so that the sealing surface of the convex rib is tightly attached to the contact surface of the compressor end cover and the terminal protection box.

Furthermore, the convex rib is formed by bending the layer structure part upwards, the convex surface of the convex rib faces the protection box side of the wiring terminal, and the concave surface of the convex rib faces the end cover side of the compressor.

Furthermore, the elastic deformation coefficient of the convex ribs is larger than that of the plane of the elastic gasket.

Furthermore, the elastic gasket is provided with a central through hole for the wiring terminal to penetrate out and a plurality of screw holes arranged around the periphery of the central through hole; the convex rib is arranged around the periphery of the central hole and the plurality of screw holes to form a closed convex rib.

Furthermore, the wiring terminal protection box is provided with a wiring port, the wiring port is provided with an elastic plug, the elastic plug is provided with a wiring hole, and the elastic plug is in interference fit with the wiring terminal protection box and the power line respectively.

Furthermore, a plurality of annular belts with alternate concave and convex are arranged on the inner wall of the wiring hole of the elastic plug; the annular belt with alternate concave and convex is in interference fit with the power line.

Furthermore, the inner diameter of a wiring hole of the elastic plug is gradually reduced from one end to the other end, and the end with the larger inner diameter is arranged on the outer side of the wiring terminal protection box; the wiring hole is in interference fit with the power line.

Furthermore, the inner diameter of a wiring port of the wiring terminal protection box is gradually reduced from the outer side to the inner side; the elastic plug is in interference fit with the wiring port.

Furthermore, the inner peripheral wall of the wiring hole of the elastic plug and/or the outer peripheral wall of the elastic plug are/is provided with silicone sealant.

Further, the compressor end cover assembly further comprises a limiting plate, and the limiting plate is fastened on the outer side of the wiring port of the wiring terminal protection box and covers the outer side edge of the elastic plug.

Further, the elastic gasket has a layer structure that the rubber layer wraps the SPCC layer.

In another aspect, the present invention provides a scroll compressor having any one of the above compressor head assemblies.

The utility model provides a compressor end cover assembly and a scroll compressor, wherein the end cover assembly comprises: the compressor end cover is provided with a compressor wiring terminal; the wiring terminal protection box is covered above the compressor wiring terminal and is hermetically matched with the compressor end cover; the elastic gasket is arranged at the joint between the wiring terminal protection box and the compressor end cover; the elastic gasket is of a layer structure with a metal material layer wrapped by a rubber layer, and at least one convex rib protruding towards the side of the terminal protection box is formed on the surface of the layer structure; the convex rib can generate elastic deformation under the pressure of the terminal protection box, so that the sealing surface of the convex rib is tightly attached to the contact surface of the compressor end cover and the terminal protection box. The elastic gasket has good toughness and is not easy to break; has good physical and chemical properties, and can better realize dust prevention, water prevention and refrigerant prevention. Elasticity stopper and power cord, wiring mouth interference fit increase the magnitude of interference of power cord and elasticity stopper, reduce the amplitude of power cord vibration to reach more reliable sealed effect, avoid appearing the gap between wiring hole and the power cord, and protect the power cord, prevent fatigue fracture, reduced the electric leakage risk, realize high-grade shell protection and electrical safety protection, satisfy shell protection level IP 67's requirement.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view of an embodiment of a compressor end cover assembly and compressor end cover of the present invention;

fig. 2 is a cross-sectional view of an embodiment of a terminal protection box of the present invention;

FIG. 3 is a top view of an embodiment of a resilient gasket of the present invention;

FIG. 4 is a partial cross-sectional view of one embodiment of a resilient gasket of the present invention;

fig. 5(a) - (b) are cross-sectional views of an embodiment of a terminal protection case of the present invention;

fig. 6(a) - (b) are cross-sectional views of another embodiment of the terminal protection case according to the present invention;

fig. 7(a) - (b) are sectional views of another embodiment of the terminal protection case according to the present invention;

fig. 8(a) - (b) are cross-sectional views of still another embodiment of the terminal protection case of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 8(b) is:

a scroll compressor housing; 2. a compressor end cover; 3. an elastic pad; 31. a rib is protruded; 32. screw holes; 4. a wiring terminal protection box; 41. a wiring port; 5. a first screw; 6. an insulated socket; 7. an elastic plug; 71. a wiring hole; 8. a limiting plate; 9. a binding post; 10. a power line; 13. and (4) organosilicon sealant.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A compressor head assembly and a scroll compressor according to some embodiments of the present invention are described below with reference to fig. 1-8 (a) - (b).

Example 1

As shown in fig. 1, 3, 4 and in one embodiment of the present invention, a compressor end cap assembly, the end cap assembly comprising: the compressor end cover 2 is provided with a compressor wiring terminal; the wiring terminal protection box 4 is covered above the compressor wiring terminal and is hermetically matched with the compressor end cover 2; the elastic gasket 3 is arranged at the joint between the wiring terminal protection box 4 and the compressor end cover 2; the elastic gasket 3 has a layer structure of a rubber layer wrapping a metal material layer, and at least one convex rib 31 protruding towards the side of the terminal protection box 4 is formed on the surface of the layer structure; the rib 31 can elastically deform under the pressure of the terminal protection box 4, so that the sealing surface of the rib is tightly attached to the contact surface between the compressor end cover 2 and the terminal protection box 4. The metal material layer in the layer structure of the elastic gasket 3 can ensure that the elastic gasket 3 has rigidity, and can keep a certain basic form under the pressure of the wiring terminal protection box 4 and the required end cover, so that the elastic gasket 3 is prevented from generating overlarge deformation; the convex rib 31 of the layer structure firstly deforms after bearing pressure and is tightly attached to the contact surface of the wiring terminal protection box 4, the surface of the layer structure is completely tightly attached to the contact surface of the junction box along with the increase of the pressure, and dust prevention, water prevention and refrigerant prevention can be better achieved. The elastic gasket 3 has good toughness and is not easy to break; the high-pressure electric connector has good physical and chemical characteristics, and is not easy to generate fatigue fracture when bearing pressure from the compressor end cover 2 and the wiring terminal protection box 4 and working vibration of the compressor, so that the electric leakage risk is reduced, high-grade shell protection and electric safety protection are realized, and the requirement of the shell protection grade IP67 is met.

Example two

As shown in fig. 3 and 4, in one embodiment of the present invention, the rib 31 is formed by bending the layer structure portion upward, the convex surface of the rib 31 faces the terminal protection case 4 side, and the concave surface of the rib 31 faces the compressor head cover 2 side. The rib 31 of the layer structure can be formed by bending the rubber layer and the metal material layer upwards; a convex surface is formed on the upper side of the layer structure, and a concave surface is formed on the lower side corresponding to the convex surface. Except that the surface of layer structure forms protruding muscle 31, the metallic material layer in the layer structure also forms the protruding muscle 31 of kickup, can make the metallic material layer also can take place elastic deformation, makes elastic gasket 3 take place to possess bigger elastic deformation power, makes elastic gasket 3 and binding post protection box 4 and compressor end cover 2's sealed laminating more firm stable.

Further, the elastic deformation coefficient of the rib 31 is larger than the elastic deformation coefficient of the plane of the elastic pad 3. When the pressure on the elastic gasket 3 is increased, the convex ribs 31 are subjected to larger elastic deformation, and the plane of the elastic gasket 3 is subjected to smaller elastic deformation, so that the stability of the whole structure of the elastic gasket 3 is ensured; when the elastic gasket 3 is subjected to pressure reduction, the convex rib 31 gradually recovers the shape, and sealing can still be realized, so that the effect of the deformation error of the elastic gasket 3 is reduced.

Further, the elastic gasket 3 is provided with a central through hole through which the terminal is passed and a plurality of screw holes 32 which are arranged around the periphery of the central through hole; the convex rib 31 is arranged around the central hole and the periphery of the screw holes 32 to form a closed convex rib 31. The convex ribs 31 enclose a closed structure and enclose a plurality of screw holes 32, so that the screw holes 32 of the wiring terminal protection box 4 and the screw holes 32 of the compressor end cover 2 can be protected in a sealing manner; at the same time, the first screw 5 passing through the screw hole 32 is protected from corrosion by the first screw 5.

EXAMPLE III

As shown in fig. 2 and fig. 5(a) - (b), the terminal protection box 4 of the elastic plug 7 is provided with a wiring port 41, the wiring port 41 is provided with the elastic plug 7, the elastic plug 7 is provided with a wiring hole 71, and the elastic plug 7 is in interference fit with the terminal protection box 4 and the power line 10 respectively. Wherein, a power line 10 outside the wiring terminal protection box 4 passes through the elastic plug 7 to be connected with the wiring terminal; the elastic plug 7 is in interference fit with the wiring terminal protection box 4 and the power line 10 respectively, so that the elastic plug 7 and the wiring terminal protection box 4, the elastic plug 7 and the power line 10 can be sealed, and the power line 10 is protected. Preferably, the elastic plug 7 may be a rubber plug.

Example four

As shown in fig. 5(a) - (b), in one embodiment of the present invention, the inner wall of the wiring hole 71 of the elastic plug 7 is provided with a plurality of annular bands of alternate concave and convex shapes; the annular belt with alternate concave and convex is in interference fit with the power line 10. The annular belts with the alternate concave and convex are in interference fit with the power line 10, so that the annular belts with the alternate concave and convex can be closely attached to the power line 10 under the extrusion effect, and the sealing protection effect is achieved.

EXAMPLE five

As shown in fig. 6(a) - (b), in the present embodiment, the inner diameter of the wire connection hole 71 of the elastic plug 7 is gradually reduced from one end to the other end, and the end with the larger inner diameter is installed outside the terminal protection box 4; the wiring hole 71 is interference-fitted with the power cord 10. With the depth of the power line 10, the end with the smaller inner diameter of the elastic plug 7 generates larger extrusion force due to elastic deformation, so that the contact part of the elastic plug 7 and the power line 10 is more reliable and stable in a vibration environment.

EXAMPLE six

As shown in fig. 7(a) - (b), the wire connection port 41 of the terminal protection case 4 is provided such that the inner diameter is gradually reduced from the outside to the inside; the elastic plug 7 is in interference fit with the wiring port 41. The one point that the wiring mouth 41 internal diameter of binding post protection box 4 is less produces great elastic deformation with elasticity stopper 7, and then surrounds the extrusion to power cord 10, realizes sealed effect to elasticity stopper 77 installs more easily and gets into wiring mouth 41.

EXAMPLE seven

As shown in fig. 8(a) - (b), in the present embodiment, the silicone sealant 13 is provided on the inner peripheral wall of the wiring hole 71 of the elastic plug 7 and/or the outer peripheral wall of the elastic plug 7. the wiring hole 71 of the elastic plug 7 is provided with the silicone sealant 13, the power cord 10 is provided with the silicone sealant 13, and the wiring hole 71 is provided with the silicone sealant 13. The organic silicon sealant 13 has no corrosivity to metals, has excellent heat resistance, chemical resistance and electrical insulation, has strong gap filling capability and short curing time, and completely realizes the sealing of the power wire 10 and the elastic plug 7 and/or the elastic plug 7 and the wiring terminal protection box 4.

Example eight

As shown in fig. 1, in the present embodiment, the compressor head cover assembly further includes a stopper plate 8, and the stopper plate 8 is fastened to the outside of the terminal port 41 of the terminal protection box 4 and covers the outer edge of the elastic plug 7. Except for the interference fit of the wire connection port 41 with the resilient plug 7. The elastic plug 7 is fixed in the wire connection port 41 through the limiting plate 8, so that the elastic plug 7 is prevented from being pulled out of the wire connection port 41 due to vibration or other reasons.

Example nine

In the present embodiment, the elastic pad 3 has a layer structure in which a rubber layer wraps the SPCC layer.

Example ten

The terminal protection box 4 of the turbo compressor of this embodiment has the compressor end cover assembly of any one of the above embodiments, and has all the advantages and effects of the compressor end cover assembly of any one of the above embodiments.

In this embodiment, a compressor end cover assembly is disposed on the scroll compressor housing 1, and an elastic gasket 3 is disposed between the compressor end cover 2 and the terminal protection box 4 and fastened by a first screw 5. An insulating socket 6 is arranged in the wiring terminal protection box 4; one end of the insulating socket 6 is connected with a wiring terminal on a wiring terminal 9 of the scroll compressor, and the other end is connected with a power line 10; the power supply line 10 extends to the outside of the terminal protection case 4 through the elastic plug 7. The compressor end cover assembly realizes high-grade shell protection and electrical safety protection by compression and meets the requirement of shell protection grade IP 67.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more than two, and unless otherwise specifically limited, the terms "upper", "lower", and the like refer to orientations or positional relationships based on the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "connected", "mounted", "fixed", and the like are to be construed broadly and may include, for example, fixed connections, detachable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (12)

1. A compressor end cover assembly, comprising:

the compressor end cover (2) is provided with a compressor wiring terminal;

the wiring terminal protection box (4) is covered above the wiring terminal and is in sealing fit with the compressor end cover (2);

the elastic gasket (3) is arranged at the joint between the wiring terminal protection box (4) and the compressor end cover (2); the elastic gasket (3) is of a layer structure with a metal material layer wrapped by a rubber layer, and at least one convex rib (31) protruding towards the side of the wiring terminal protection box (4) is formed on the surface of the layer structure; the convex rib (31) can generate elastic deformation under the pressure of the wiring terminal protection box (4), so that the sealing surface of the convex rib is tightly attached to the contact surface between the compressor end cover (2) and the wiring terminal protection box (4).

2. The compressor end cover assembly according to claim 1, wherein the rib (31) is formed by bending the layer structure portion upward, a convex surface of the rib (31) faces the terminal protection box (4) side, and a concave surface of the rib (31) faces the compressor end cover (2) side.

3. Compressor end cover assembly according to claim 2, wherein the rib (31) has an elastic deformation coefficient greater than the elastic deformation coefficient of the plane of the elastic gasket (3).

4. A compressor end cover assembly according to claim 3, wherein said resilient gasket (3) is provided with a central through hole through which said terminal passes and a plurality of screw holes (32) around the periphery of said central through hole; the convex rib (31) is arranged around the center hole and the peripheries of the screw holes (32) to form a closed convex rib (31).

5. The compressor end cover assembly as recited in claim 1, wherein said terminal protection box (4) is provided with a wiring port (41), an elastic plug (7) is provided at said wiring port (41), said elastic plug (7) is provided with a wiring hole (71), and said elastic plug (7) is respectively in interference fit with said terminal protection box (4) and said power line (10).

6. A compressor end cover assembly according to claim 5, wherein said wiring hole (71) of said elastic plug (7) is provided on its inner wall with a plurality of annular bands of alternate male and female shapes; the annular belt with the alternate concave and convex is in interference fit with the power line (10).

7. The compressor end cover assembly according to claim 5, wherein the inner diameter of the terminal hole (71) of the elastic plug (7) is gradually reduced from one end to the other end, and the end having the larger inner diameter is installed outside the terminal protection case (4); the wiring hole (71) is in interference fit with the power line (10).

8. A compressor end cover assembly according to claim 5, wherein the inner diameter of said wire connection port (41) of said terminal protection box (4) is tapered from the outside to the inside; the elastic plug (7) is in interference fit with the wiring port (41).

9. Compressor end cover assembly according to claim 5, characterized in that the inner peripheral wall of the wiring hole (71) of the elastic plug (7) and/or the outer peripheral wall of the elastic plug (7) is provided with a silicone sealant (13).

10. A compressor end cover assembly according to claim 5, further comprising a limit plate (8), said limit plate (8) being fastened outside said wire connection port (41) of said terminal protection box (4) and covering the outer edge of said resilient plug (7).

11. The compressor end cover assembly of claim 1, wherein the elastomeric gasket (3) has a layer structure of a rubber layer wrapped around a SPCC layer.

12. A scroll compressor having a compressor head assembly according to any one of claims 1 to 11.

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