An effective leak-proof evaporator connection tube assembly

Abstract

The utility model discloses an effective anti -leakage's evaporimeter connecting pipe assembly, including flexible pipe, and detachable installation in the connecting terminal of two ends of flexible pipe, one connecting terminal connects evaporimeter output, and another connecting terminal connects compressor entrance, the both ends of flexible pipe are injection formed with the plug -in part, and the outer diameter of plug -in part is greater than the outer diameter of flexible pipe, and the spring is set up on the flexible pipe, and the both ends of spring are limited through the plug -in part of both ends, and the connecting terminal inserts in the plug -in part, this product can form multiple sealing effect after cooperation with plug -in part through specially designed connecting terminal, and this sealing effect still can play the technical effect of preventing the detachment.

Description

Technical Field

[0001] This utility model relates to an effective leak-proof evaporator connecting pipe assembly. Background Technology

[0002] In automotive air conditioning systems, the evaporator connecting pipe assembly is a key component for refrigerant circulation, and its sealing performance directly affects the system's energy efficiency and reliability.

[0003] In the prior art, the connecting pipe assembly used to connect the evaporator and the compressor includes a hose and a connecting terminal. The hose and the connecting terminal are only fixed by clamps, which is not sealing enough and is prone to refrigerant leakage.

[0004] Based on the above problems, we designed an evaporator connection pipe assembly with better sealing effect and effective leakage prevention. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an evaporator connecting pipe assembly with better sealing effect and effective leakage prevention.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An effective leak-proof evaporator connecting pipe assembly includes a flexible pipe and connecting terminals detachably installed at both ends of the flexible pipe. One connecting terminal is connected to the evaporator outlet, and the other connecting terminal is connected to the compressor inlet. Both ends of the flexible pipe are injection molded with insertion portions, the outer diameter of which is larger than the outer diameter of the flexible pipe. A spring is sleeved on the flexible pipe, and both ends of the spring are limited by the insertion portions at both ends. The connecting terminal is inserted into the insertion portion.

[0008] Preferably, the connecting terminal includes a pressure plate and a connecting tube. A stepped hole is passed through the middle of the pressure plate. A baffle is machined on the outer wall of the connecting tube. One end of the connecting tube is machined with an insertion guide cone surface, and the other end is machined with a sealing part. The insertion guide cone surface passes through the stepped hole. The baffle is located on the stepped surface of the stepped hole. An annular groove is machined on the tube body of the connecting tube near the insertion guide cone surface. The connecting tube is clearance-fitted with the small diameter portion of the stepped hole. One or more sealing rings are clamped on the outer wall of the connecting tube, forming a seal between the sealing rings and the small diameter portion of the stepped hole. A through hole is machined on the surface of the pressure plate, through which a locking screw passes. A sealing plate is fitted on the inner surface of the pressure plate, through which the connecting tube passes. The connecting tube and the sealing plate are interference-fitted. A fixing plate is fitted on the outer surface of the pressure plate, and the fixing plate is fixed by the end of the locking screw. The fixing plate locks the baffle. The sealing part cooperates with the insertion part.

[0009] Preferably, the sealing part includes a plurality of conical outer sealing surfaces, and an inner sealing surface corresponding to the outer sealing surfaces is injection molded on the inner wall of the insertion part, wherein the outer sealing surface and the inner sealing surface are interference fit.

[0010] Preferably, a thickened portion is provided on the outer wall of the plug-in portion, and edge-blocking portions are injection molded at both ends of the thickened portion. A first annular groove is machined on the outer wall of the connecting pipe. After the connecting pipe and the plug-in portion are fitted together, the first annular groove corresponds to the thickened portion, and a clamp is fitted on the thickened portion.

[0011] Preferably, a sealing gasket is fitted onto the connecting pipe, and the sealing gasket acts between the stepped hole and the baffle.

[0012] Preferably, the thickness of the combined sealing gasket and the baffle is greater than the depth of the large diameter portion of the stepped hole. After the fixing plate is assembled, the baffle is pressed into the stepped hole, at which point the sealing gasket is compressed and deformed.

[0013] The beneficial effects of this utility model are:

[0014] This product, through its specially designed connecting terminals, can form a multi-layered sealing effect when mated with the plug-in part. This sealing effect also serves as a technical protection against detachment, increasing the fixation strength of the plug-in part and the connecting terminals, and relieving the fixing pressure at the clamp position.

[0015] This product has a simple structure and is suitable for widespread use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the product's structure;

[0019] Figure 3 This is a cross-sectional view of the connecting terminals;

[0020] Figure 4 This is a sectional view at point A;

[0021] Figure 5This is a cross-sectional view of the plug-in portion at point A. Detailed Implementation

[0022] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] See Figure 1 and Figure 2 The diagram shows an effective leak-proof evaporator connecting pipe assembly, including a flexible pipe 1 and connecting terminals 2 detachably installed at both ends of the flexible pipe 1. One connecting terminal 2 is connected to the evaporator outlet, and the other connecting terminal 2 is connected to the compressor inlet. Both ends of the flexible pipe 1 are injection molded with insertion portions 11, the outer diameter of which is larger than the outer diameter of the flexible pipe 1. A spring 3 is sleeved on the flexible pipe 1, and both ends of the spring 3 are limited by the insertion portions 11 at both ends. The connecting terminal 2 is inserted into the insertion portion 11.

[0028] In the above technical solution, the spring 3 forms a protective layer on the outside of the flexible tube 1, which provides a certain degree of protection for the outside of the flexible tube 1 during vehicle use.

[0029] The specially designed connection terminal 2 and plug-in part 11 achieve an effective leak-proof effect.

[0030] See Figure 3 As shown, the connecting terminal 2 includes a pressure plate 21 and a connecting tube 22. A stepped hole 23 passes through the center of the pressure plate 21. A baffle 24 is machined on the outer wall of the connecting tube 22. One end of the connecting tube 22 has an insertion guide cone surface 25, and the other end has a sealing portion 26. The insertion guide cone surface 25 passes through the stepped hole 23, and the baffle 24 is positioned on the stepped surface of the stepped hole 23. An annular groove 28 is machined on the tube body of the connecting tube 22 near the insertion guide cone surface 25. The connecting tube 22 has a clearance fit with the small-diameter portion of the stepped hole 23. A retaining device is located on the outer wall of the connecting tube 22. The sealing ring 29 forms a seal with the small-diameter portion of the stepped hole 23. A through hole 210 is machined on the surface of the pressure plate 21, through which a locking screw 211 passes. A sealing plate 212 is fitted on the inner surface of the pressure plate 21, and the connecting pipe 22 passes through the sealing plate 212. The connecting pipe 22 and the sealing plate 212 are interference-fitted. A fixing plate 213 is fitted on the outer surface of the pressure plate 21, and the fixing plate 213 is fixed by the end of the locking screw 211. The fixing plate 213 locks the baffle 24. The sealing part 26 cooperates with the insertion part 11.

[0031] In the above technical solution, the angle of the pressure plate 21 can be adjusted according to the installation position to facilitate precise hole alignment installation.

[0032] The fixing plate 213 makes the pressure plate 21 and the connecting pipe 22 separate, which increases the versatility and facilitates processing and manufacturing.

[0033] The use of sealing ring 29 and sealing plate 212 increases the sealing performance between this product and the evaporator and compressor.

[0034] See Figure 3 , Figure 4 and Figure 5 As shown, the sealing part 26 includes a plurality of conical outer sealing surfaces 261, and an inner sealing surface 111 corresponding to the outer sealing surface 261 is injection molded on the inner wall of the insertion part 11. The outer sealing surface 261 and the inner sealing surface 111 are interference fit.

[0035] In the above technical solution, the cooperation of multiple outer sealing surfaces 261 and inner sealing surfaces 111 forms a multi-seal effect. Furthermore, the cooperation of the outer sealing surfaces 261 and inner sealing surfaces 111 can also play an anti-loosening role, increasing the firmness of the connection between the plug-in part 11 and the connecting pipe 22.

[0036] See Figure 2 and Figure 3 As shown, a thickened portion 112 is provided on the outer wall of the plug-in portion 11, and edge-blocking portions 113 are injection molded at both ends of the thickened portion 112. A first annular groove 222 is machined on the outer wall of the connecting pipe 22. After the connecting pipe 22 is engaged with the plug-in portion 11, the first annular groove 222 corresponds to the thickened portion 112. A clamp 114 is installed at the thickened portion 112.

[0037] In this technical solution, the thickened part 112 can increase the force-bearing capacity. After the clamp 114 tightens, the thickened part 112 deforms and gets stuck into the first annular groove 222, preventing the plug part 11 from coming out.

[0038] See Figure 3 As shown, a sealing gasket 27 is fitted on the connecting pipe 22, and the sealing gasket 27 acts between the stepped hole 23 and the baffle 24.

[0039] The combined thickness of the sealing gasket 27 and the baffle 24 is greater than the depth of the large diameter portion of the stepped hole 23. After the fixing plate 213 is assembled, the baffle 24 is pressed into the stepped hole 23, at which time the sealing gasket 27 is squeezed and deformed.

[0040] The above technical solution can form a further seal between the pressure plate 21 and the connecting pipe 22 by using the sealing gasket 27.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An effective leak-proof evaporator connecting pipe assembly, characterized in that: The device includes a flexible tube (1) and connecting terminals (2) detachably mounted at both ends of the flexible tube (1). One connecting terminal (2) is connected to the evaporator outlet, and the other connecting terminal (2) is connected to the compressor inlet. Both ends of the flexible tube (1) are injection molded with insertion portions (11). The outer diameter of the insertion portions (11) is larger than the outer diameter of the flexible tube (1). A spring (3) is sleeved on the flexible tube (1). The two ends of the spring (3) are limited by the insertion portions (11) at both ends. The connecting terminal (2) is inserted into the insertion portion (11).

2. The effective leak-proof evaporator connecting pipe assembly according to claim 1, characterized in that: The connecting terminal (2) includes a pressure plate (21) and a connecting tube (22). A stepped hole (23) is passed through the middle of the pressure plate (21). A baffle (24) is processed on the outer wall of the connecting tube (22). An insertion guide cone (25) is processed at one end of the connecting tube (22), and a sealing part (26) is processed at the other end. The insertion guide cone (25) passes through the stepped hole (23). The baffle (24) is located on the stepped surface of the stepped hole (23). An annular groove (28) is processed on the tube body of the connecting tube (22) near the insertion guide cone (25). The connecting tube (22) is clearance-fitted with the small diameter part of the stepped hole (23). One or more fittings are fastened on the outer wall of the connecting tube (22). A sealing ring (29) forms a seal with the small diameter portion of the stepped hole (23). A through hole (210) is machined on the surface of the pressure plate (21), through which a locking screw (211) passes. A sealing plate (212) is fitted on the inner surface of the pressure plate (21), and a connecting pipe (22) passes through the sealing plate (212). The connecting pipe (22) and the sealing plate (212) are press-fitted. A fixing plate (213) is fitted on the outer surface of the pressure plate (21), and the fixing plate (213) is fixed by the end of the locking screw (211). The fixing plate (213) locks the baffle (24). The sealing part (26) is fitted with the insertion part (11).

3. The effective leak-proof evaporator connecting pipe assembly according to claim 2, characterized in that: The sealing part (26) includes a plurality of conical outer sealing surfaces (261), and an inner sealing surface (111) corresponding to the outer sealing surface (261) is injection molded on the inner wall of the insertion part (11), and the outer sealing surface (261) and the inner sealing surface (111) are interference fit.

4. The effective leak-proof evaporator connecting pipe assembly according to claim 3, characterized in that: A thickened portion (112) is provided on the outer wall of the plug-in portion (11), and edge-stop portions (113) are formed by injection molding at both ends of the thickened portion (112). A first annular groove (222) is machined on the outer wall of the connecting pipe (22). After the connecting pipe (22) is engaged with the plug-in portion (11), the first annular groove (222) corresponds to the thickened portion (112). A clamp (114) is installed on the thickened portion (112).

5. The effective leak-proof evaporator connecting pipe assembly according to claim 2, characterized in that: A sealing gasket (27) is fitted on the connecting pipe (22), and the sealing gasket (27) acts between the stepped hole (23) and the baffle (24).

6. The effective leak-proof evaporator connecting pipe assembly according to claim 5, characterized in that: The combined thickness of the sealing gasket (27) and the baffle (24) is greater than the depth of the large diameter portion of the stepped hole (23). After the fixing plate (213) is assembled, the baffle (24) is pressed into the stepped hole (23), and the sealing gasket (27) is deformed by compression.

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