High-protection-level dustproof cap of refrigeration air conditioner

Abstract

The high-protection-level dustproof cap is embedded in a pipe nozzle to seal the pipe nozzle and comprises a plug body matched with the pipe nozzle in pipe diameter, the plug body is provided with an axially-through port, a fastening body is movably arranged in the plug body, the bottom of the fastening body can be completely arranged in the inner wall of the plug body and attached to the inner wall of the plug body in the circumferential direction, and the bottom of the fastening body is fixedly connected with the plug body. A sealing head is arranged in the fastening body, and when the sealing head is pressed downwards to the bottom end of the fastening body, the plug body is driven to expand by means of the fastening body so as to fill the surplus size of the periphery of the plug body and the pipe nozzle and tightly fasten the plug body. The plug body, the fastener and the sealing head which are matched are arranged, and the radial size of the sealing head is larger than the diameter of the inner wall of the lower portion of the fastener and smaller than the diameter of the inner wall of the upper portion of the fastener, so that when the sealing head is pressed downwards to the lower portion of the fastener, radial outward force is given to enable the fastener to expand outwards; therefore, the peripheral plug body and the pipe nozzle are filled with the surplus size and are tightly fastened, falling caused by shaking in the application process is not prone to occurring, and the follow-up disassembling process is relatively simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to automobile air conditioner dustproof technical field, concretely is a high protection level dustproof cap of refrigeration air conditioner. BACKGROUND

[0002] With the rapid development of automobile air conditioning industry, the internal cleanliness of condensers, evaporators and other components during manufacturing and transportation is getting higher and higher in the car factory. If the pipe nozzle joint in the product parts is not sealed during transportation, there is a risk of foreign matter entering. The existing dustproof cap design cooperates with the thread of the machine pipe nut by screwing in and fixing. During long-term application, it is easy to loosen to a certain extent due to shaking of the car.

[0003] In order to solve the above problems, the case is born. INVENTION CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a high protection level dustproof cap of refrigeration air conditioner, which solves the problems raised in the above background technology.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the utility model realizes the following technical scheme: a high protection level dustproof cap of refrigeration air conditioner is embedded in the pipe nozzle to seal it, including a plug body matched with the pipe diameter of the pipe nozzle, an axial through hole is formed on the plug body, a fastening body is movably arranged in the plug body, the bottom of the fastening body can be completely arranged in and peripherally attached to the inner wall of the plug body, a sealing head is arranged in the fastening body, and the plug body is expanded by the fastening body when the sealing head is pressed to the bottom end of the fastening body, so as to fill the excess size of the plug body periphery and the pipe nozzle and tightly fasten.

[0008] Preferably, the plug body is connected with a cover, which can be arranged at the end surface of the pipe nozzle.

[0009] Preferably, the upper part of the fastening body is a ring-shaped column, which forms a contraction at the joint with the bottom part, so that the radial dimension inside is greater than the radial dimension of the inner wall of the bottom part, the radial dimension of the sealing head is greater than the inner wall diameter of the lower part of the fastening body, and less than the inner wall diameter of the upper part of the fastening body.

[0010] Preferably, the bottom part of the fastening body is made of a deformation material, and a plurality of slots are peripherally formed on the outside, and the plug body and the bottom part of the fastening body are made of the same deformation material.

[0011] Preferably, the upper part of the fastener has an internal thread, and the top of the sealing head is connected to an outer body with a larger radial dimension. The outer body has an external thread of a corresponding size, and the height of the fastener is basically the same as the height of the sealing head and the outer connector.

[0012] Preferably, the outer wall of the plug is provided with a friction pad layer.

[0013] (III) Beneficial Effects

[0014] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a high-protection dust cap for refrigeration and air conditioning, which is equipped with a suitable plug, a fastener and a sealing head. The radial dimension of the sealing head is larger than the inner wall diameter of the lower part of the fastener and smaller than the inner wall diameter of the upper part of the fastener. When the sealing head is pressed down to the lower part of the fastener, the sealing head applies a radial outward force, causing the fastener to expand outward to fill the excess size of the outer plug and nozzle and to tighten it. It is not easy to fall off due to shaking during use, and the subsequent disassembly process is relatively simple. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0017] Figure 3 This is a disassembly diagram of the present invention.

[0018] In the diagram: 1. Plug; 2. Cap; 3. Fastener; 4. Sealing head; 5. Handle; 6. Internal thread; 7. External body; 8. Groove; 9. Friction pad; 10. Rotary handle; 11. Port. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-2 The image shows a high-protection dust cap for a refrigeration air conditioner, which is embedded in the nozzle to seal it. It includes a plug 1 adapted to the nozzle diameter, a fastener 3, and a sealing head 4. The plug 1 and the cap 2 have axially penetrating openings 11. The fastener 3 is movably inserted into the plug 1, and the bottom of the fastener 3 can be completely inserted and circumferentially conforms to the inner wall of the plug 1. The sealing head 4 is placed inside the fastener 3, and its top is connected to an external body 7 with a larger radial dimension.

[0021] The plug 1 can be inserted into the nozzle, and the plug 1 is connected to the cap 2, which can be placed against the end face of the nozzle.

[0022] The upper part of the solid body 3 is a ring-shaped column, which contracts at the junction with the bottom, making its internal radial dimension larger than the radial dimension of the bottom inner wall. It should be noted that the bottom of the solid body 3 is made of a deformable material (conventional materials such as plastic or shape memory metal), and multiple grooves 8 are formed on its outer circumference to allow for deformation under stress. (See attached...) Figure 2 As shown, the radial dimension of the sealing head 4 is larger than the inner wall diameter of the lower part of the fastening body 3 and smaller than the inner wall diameter of the upper part of the fastening body 3. This causes the sealing head 4 to exert a radially outward force when it is pressed down to the lower part of the fastening body 3, causing the fastening body 3 to expand outward, thereby filling the excess size of the outer plug 1 and the nozzle and tightening it.

[0023] The sealing head 4 can be made of metal and have a solid design.

[0024] Furthermore, simply pressing the sealing head 4 downwards is difficult to control (too much force can cause it to sink too deeply and become difficult to disassemble), as shown in the attached... Figure 3 As shown, an internal thread 6 is opened on the upper part of the fastening body 3, and an external thread of the corresponding size is opened on the outer body 7. At the same time, the height of the fastening body 3 is basically consistent with the height of the sealing head 4 and the outer connector, so that the sealing head 4 can be pressed in by screwing.

[0025] To facilitate the tightening operation, a handle 5 is connected to the upper part of the outer body 7. The handle 5 has hinged rotating handles 10 on both sides, which can be turned outwards to a horizontal position to drive the entire sealing head 4 to rotate.

[0026] Since the plug 1 needs to be able to be tightly fastened to the inner wall of the nozzle, it is made of the same deformable material as the bottom of the fastening body 3, which can expand outward under force. Secondly, a friction pad layer 9 is provided on the outer wall of the plug 1 to increase the adhesive friction between it and the inner wall of the nozzle.

[0027] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A high protection dust cap for refrigeration and air conditioning, embedded in the pipe nozzle to close it, characterized in that: The plug body is matched with the pipe diameter of the pipe nozzle, an axial through hole is formed on the plug body, a fastening body is movably arranged in the plug body, the bottom of the fastening body can be completely arranged in and peripherally attached to the inner wall of the plug body, a sealing head is arranged in the fastening body, and the plug body is expanded by the fastening body when the sealing head is pressed to the bottom end of the fastening body to fill the surplus size of the plug body periphery and the pipe nozzle and compactly fasten.

2. A high protection level dust cap for a refrigeration air conditioner as defined in claim 1, characterized in that: A cover is connected to the plug body and can be arranged at the end surface of the pipe nozzle.

3. A high protection level dust cap for a refrigeration air conditioner as defined in claim 1, characterized in that: The upper part of the fastening body is a ring-shaped cylinder, a contraction is formed at the joint of the upper part and the bottom part, the radial dimension of the inside of the upper part is greater than that of the inner wall of the bottom part, the radial dimension of the sealing head is greater than that of the inner wall of the lower part of the fastening body and smaller than that of the inner wall of the upper part of the fastening body.

4. A high protection dust cap for a refrigeration air conditioner as defined in claim 3, characterized in that: The bottom part of the fastening body is made of a deformation material and a plurality of slots are peripherally formed on the outside of the bottom part, and the plug body and the bottom part of the fastening body are made of the same deformation material.

5. A high protection level dust cap for a refrigeration air conditioner as defined in claim 1, characterized in that: The upper part of the fastening body is internally threaded, the top of the sealing head is connected with an external body with a greater radial dimension, the external body is externally threaded with a corresponding size, and the height of the fastening body is basically the same as that of the sealing head and the external head.

6. A high protection level dust cap for a refrigeration air conditioner as defined in claim 1, characterized in that: A friction pad layer is arranged on the outer wall of the plug body.

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