CN214331594U - Automobile air conditioner valve inside - Google Patents

Abstract

An automotive air conditioner valve core, comprising: a core body connecting cap with a through hole; the core rod penetrates through the core body connecting cap and can move linearly; the core rod is provided with a bulge at a position corresponding to the inlet end of the through hole; the outlet end of the core body connecting cap extends to the inside of the core body connecting cap to form a closed step; the spring is arranged in the through hole; the two ends of the spring are abutted between the bulge and the closed step; and a sealing ring is sleeved outside the core body connecting cap. The valve core encapsulates the spring inside the core body connecting cap, and adopts an integrated structure, so that the valve core has the advantages of high pressure resistance and high refrigerant filling speed.

Description

Automobile air conditioner valve inside

Technical Field

The utility model belongs to valve inside field, especially vehicle air conditioner valve inside.

Background

The refrigerant is an essential medium for ensuring the normal operation of the air conditioner, and besides the excellent working performance, performance indexes affecting the environment must be considered, that is, the refrigerant is better as less harmful to the atmospheric environment, and is preferably harmless. Wherein, CO₂The refrigerant (R744) has been the subject of attention and research because of its excellent working performance and harmless property to the environment, but it requires high working pressure and is not popularized in the design and production of air conditioning systems in the late years. In recent years, CO₂As a refrigerant, the advantages of environmental protection and performance are increasingly attracting the attention of researchers in various countries around the world, the development of systems and components thereof is greatly developed, and the problems of technologies and processes which limit the popularization and application thereof are gradually overcome. It is believed that automotive air conditioning systems, commercial refrigeration systems, residential air conditioning systems, and the like will use a substantial amount of CO in the near future₂Replace the existing refrigeration working medium.

Changes in refrigerant will necessarily place new demands on the performance of the air conditioning system, such as the aforementioned operating pressures. C0₂The working pressure of the refrigerant is 6-8 times that of the traditional refrigerant, so that the requirement is that the new air conditioning system can safely and reliably operate under the new pressure condition. The valve core is used as a key part for filling and sealing the refrigerant, and naturally, the requirement is further satisfied.

However, the valve core (as shown in fig. 1 and 2) of the existing type is screwed into the valve body, and the core body is generally formed by buckling a core cap and the core body due to structural limitation, so that the assembly workload is increased and the sealing difficulty is ensured.

In view of the above problems in the prior art, there is a need for an improved valve core for an air conditioner of a vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an efficiency is improved vehicle air conditioner valve inside.

In order to achieve the above object, the present invention provides the following technical solutions:

an automotive air conditioner valve core, comprising:

a core body connecting cap with a through hole;

the core rod penetrates through the core body connecting cap and can move linearly;

the core rod is provided with a bulge at a position corresponding to the inlet end of the through hole;

the outlet end of the core body connecting cap extends to the inside of the core body connecting cap to form a closed step;

the spring is arranged in the through hole;

the two ends of the spring are abutted between the bulge and the closed step;

and the outer side surface of the core body connecting cap is sleeved with a sealing ring.

Furthermore, a limiting cap is arranged at the top end of the core rod;

the diameter of the limiting cap is larger than that of the inlet end of the core body connecting cap.

Further, the inlet end comprises a first section and a second section from top to bottom;

the first section is a cylindrical cavity;

the outlet diameter of the second section is greater than the inlet diameter of the second section connected to the first section.

Furthermore, a sealing gasket is sleeved on the core rod at a position corresponding to the outlet end of the core body connecting cap, so as to seal the end face of the core body connecting cap.

Further, the core rod is provided with an outlet bulge at a position corresponding to the outlet end of the core body connecting cap;

the core rod clamps a gasket between the outlet protrusion and the sealing gasket;

the gasket is arranged on the inner side of the outlet end of the body connecting cap;

the end part of the core rod is provided with a core seat, and the top surface of the core seat is provided with an annular groove for accommodating the sealing gasket;

the sealing gasket and the core seat are positioned outside the core body connecting cap.

In the technical scheme, the utility model provides a pair of vehicle air conditioner valve inside has following beneficial effect:

the utility model encapsulates the spring inside the core body connecting cap, thereby reducing the participation of manpower to the spring and protecting the spring; and adopt integral type structure, the main advantage is high pressure resistant, and refrigerant fills the speed fast.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic view of a prior art valve core;

FIG. 2 is a schematic view of another prior art valve core configuration;

FIG. 3 is a schematic view of the structure of the valve core disclosed in the present invention;

FIG. 4 is a schematic view of the valve core when inflated;

1. a core bar; 2. the core body is connected with the cap; 3. a spring; 4. a seal ring; 5. a gasket; 6. a gasket; 7. a core print; 11. a protrusion; 12. a limiting cap; 13. an outlet boss; 111. a first stage; 112. a second stage; 21. and closing the step.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in FIGS. 1-4;

a core body connecting cap 2 with a through hole;

the core rod 1 penetrates through the core body connecting cap 2 and can move linearly;

the inlet end comprises a first section 111, a second section 112 and a third section from top to bottom;

the through hole of the inlet section of the core body connecting cap 2 is divided into two sections, and the first section 111 is a cylindrical cavity;

the outlet diameter of the second section 112 is larger than the inlet diameter of the first section 111 to which it is connected, preferably in the shape of the side of a circular truncated cone.

The first section is a cylindrical cavity, so that the sliding connection between the upper part of the core rod 1 and the core body connecting cap 2 is convenient to realize; the core rod 1 is provided with a bulge 11 at a position corresponding to the inlet end of the through hole, the bulge 11 is matched with the shape of the side surface of the inner cavity of the second section, when the core body moves upwards, the bulge 11 limits the movement of the core body, and the core body can play a certain role in isolating and sealing the through hole due to the matching shape of the core body and the core body. The third section is the area of the through hole that accommodates the spring 3.

The third section is divided into a first part, a second part and a third part from top to bottom in sequence. The diameter of the input end of the first part is the same as that of the output end of the second end, and the first part corresponds to one end of the spring. The diameter of the input end of the second part is larger than that of the output end of the first part, the second part is a cylindrical cavity, and a groove is formed in the third section; the person skilled in the art should think that in order to facilitate the processing, an oblique chamfer is formed at the intersection of the first part and the second part, so as to realize the natural tool withdrawal and tool change in the processing process. The third section is also a cylindrical cavity but has an input end diameter greater than the output end diameter of the second section so that the second and third sections form a closed step 21. The person skilled in the art will appreciate that the inner diameter (third portion) of the through hole corresponding to the closing step 21 cannot be smaller than the inner diameter of the first portion, otherwise it cannot be machined.

The outlet end of the core body connecting cap 2 extends into the core body connecting cap 2 to form a closed step 21; spring 3 is arranged in the through hole, so a groove is processed at the through hole corresponding to the upper part of closed step 21 to form a closed step, because the projection of the upper surface and the lower surface of closed step 21 and protrusion 11 is not consistent, the whole spring which is cylindrical can not be adopted, but a reducing spring is adopted, the center of the cross section of each circle of spring on the axial cross section of figure 4 is on a straight line, one end of the spring is arranged under protrusion 11, the other end of the spring is arranged in the groove formed by the second part, and the two ends of spring 3 are abutted between protrusion 11 and closed step 21.

The outer side surface of the core body connecting cap 2 is sleeved with a sealing ring 4. This is novel does not have the connected mode to valve inside and connecting piece, and sealing washer 4 is prior art, does not do the perplexing here.

The top end of the core rod 1 is provided with a limiting cap 12, and the diameter of the limiting cap 12 is larger than that of the inlet end of the core body connecting cap 2. Thus, when the core rod 1 is pressed down, the core rod 1 cannot completely enter the through hole of the core body connecting cap 2.

The core rod 1 is sleeved with a sealing gasket 6 at the corresponding position of the outlet end of the core body connecting cap 2 for sealing the end surface of the core body connecting cap 2. The sealing by means of the sealing gasket 6 is a common technical means in the field and will not be described in detail here.

Preferably, the core rod 1 is provided with an outlet bulge 13 at a position corresponding to the outlet end of the core body connecting cap 2; the core rod 1 clamps a gasket 5 between the outlet protrusion 13 and the sealing gasket 6; the gasket 5 is arranged on the inner side of the outlet end of the body connecting cap 2; the end part of the core rod 1 is provided with a core seat 7, the end part of the core seat 7 is an open cylinder, and internal threads are arranged to enable the end part of the core rod 1 to be sleeved into the core seat 7 in a threaded connection mode; the top surface of the core seat 7 is provided with an annular groove for accommodating the sealing gasket 6; the sealing gasket 6 and the core seat 7 are positioned outside the core body cap 2, and the top surface of the sealing gasket 6 can cover the end part of the core body cap 2, so that sealing is realized.

An outlet bulge 13 is fixed in the through hole of the core rod 1, and the gasket 5 is arranged on the inner side surface of the end part of the through hole in order to position and install the gasket 5, so that on one hand, the core rod 1 is in sliding connection with the core body connecting cap 2, and the stable movement of the core rod 1 and the core body connecting cap 2 is further ensured; on the other hand, after the core seat 7 is disassembled through threads, the axial distance of the sealing gasket 6 can be adjusted by selecting different gaskets 5, and the sealing effect is guaranteed.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (5)

1. An automotive air conditioner valve core, characterized by comprising:

a core body connecting cap (2) with a through hole;

the core rod (1) penetrates through the core body connecting cap (2) and can move linearly;

the core rod (1) is provided with a bulge (11) at a position corresponding to the inlet end of the through hole;

the outlet end of the core body connecting cap (2) extends to the inside of the core body connecting cap (2) to form a closed step (21);

the spring (3) is arranged in the through hole;

the two ends of the spring (3) are abutted between the bulge (11) and the closed step (21);

and the outer side surface of the core body connecting cap (2) is sleeved with a sealing ring (4).

2. The automotive air conditioner valve core according to claim 1, characterized in that the top end of the core rod (1) is provided with a limiting cap (12);

the diameter of the limiting cap (12) is larger than that of the inlet end of the core body connecting cap (2).

3. An automotive air conditioner valve core according to claim 1, characterized in that the inlet end comprises, from top to bottom, a first section (111) and a second section (112);

the first section (111) is a cylindrical cavity;

the outlet diameter of the second section (112) is greater than the inlet diameter thereof connected to the first section (111);

the top surface of the protrusion (11) and the side profile of the second section (112) are matched.

4. The vehicle air conditioner valve core according to claim 1, characterized in that the core rod (1) is sleeved with a sealing gasket (6) at a position corresponding to the outlet end of the core body connecting cap (2) for sealing the end surface of the core body connecting cap (2).

5. The vehicle air conditioner valve core according to claim 4, characterized in that the core rod (1) is provided with an outlet protrusion (13) at a position corresponding to the outlet end of the core body connecting cap (2);

the core rod (1) clamps a gasket (5) between the outlet protrusion (13) and the sealing gasket (6);

the gasket (5) is arranged on the inner side of the outlet end of the body connecting cap (2);

a core seat (7) is arranged at the end part of the core rod (1), and an annular groove for accommodating the sealing gasket (6) is arranged on the top surface of the core seat (7);

the sealing gasket (6) and the core seat (7) are positioned outside the core body connecting cap (2).

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