Hose connecting joint
By simplifying the interference fit and external clamp design of the connection structure, the problems of high processing difficulty and low installation efficiency of existing automotive cooling system hose connectors have been solved, resulting in cost reduction and improved installation convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI AMAP MACHINERY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-04-17
AI Technical Summary
Existing automotive cooling systems have complex hose connection structures, are difficult to manufacture, costly, and have low installation efficiency, making them unsuitable for the confined space of the engine compartment.
The dual-stage fixing design, which uses interference fit and external clamps, simplifies the connection structure. The first and second limiting components are interference-fitted with the pipe and fixed with clamps. The stop component limits the connection length, and the guide section assists in insertion.
It reduces production costs and processing difficulty, improves production and installation efficiency, enhances connection reliability and adaptability, and is suitable for rapid installation in confined spaces.
Smart Images

Figure CN224135416U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of automotive pipeline connection components, specifically relating to a flexible hose connection connector. Background Technology
[0002] The cooling system in a car is used to dissipate heat generated during vehicle operation. The water-cooled piping assembly, as a core component of the cooling system, plays a crucial role in the cooling process. The water-cooled piping assembly is responsible for delivering coolant from the engine water pump to various parts of the engine, such as the cylinder block and cylinder head, and then delivering the heat-absorbing coolant to the radiator for further cooling, thus achieving coolant circulation throughout the entire cooling system.
[0003] Connecting hoses in water-cooled piping assemblies typically requires connectors. Many connectors on the market have several drawbacks. For example, some connectors employ multi-layered nesting and complex thread designs. These structures not only increase processing difficulty and production costs but also make them unsuitable for the confined, compact, and complex installation space within a car's engine compartment. Furthermore, installation and maintenance often require significant time to adjust angles and positions, resulting in low work efficiency. In addition, the complex structure makes it difficult to guarantee a high yield rate during production, further increasing manufacturing costs.
[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content
[0005] The purpose of this utility model is to provide a flexible hose connector that simplifies the connection structure and optimizes the limiting and fixing methods to solve the technical problems of complex connection structure, high processing cost and low installation efficiency in the prior art.
[0006] To achieve the above objectives, the flexible hose connector of this utility model provides the following technical solution:
[0007] A flexible hose connector includes a cylindrical connector body with open ends for connecting two pipes that need to be connected. The connector body has a first connecting portion and a second connecting portion. The first connecting portion is used to extend into and be engaged with one end of the cavity of one pipe, and the second connecting portion is used to extend into and be engaged with one end of the cavity of another pipe. The outer wall of the first connecting portion has at least one outwardly protruding first limiting member, and the outer wall of the second connecting portion has at least one outwardly protruding second limiting member. The radial dimensions of the first limiting member and the second limiting member are both slightly larger than the cavity dimensions of the corresponding connected pipes, so that the first connecting portion and the second connecting portion are stably engaged in the pipes.
[0008] The hose connector also includes multiple fixing components detachably disposed on the outside of the first connecting part and the second connecting part. After the first connecting part and the second connecting part are inserted into the pipe, the multiple fixing components are used to be spaced apart on the pipe outside the first connecting part and the second connecting part to press the first connecting part and the second connecting part together.
[0009] As a further optimized technical solution, a stop is provided between the first connecting part and the second connecting part to limit the connection length of the first connecting part and the second connecting part to the pipeline respectively.
[0010] As a further optimized technical solution, the stop member is an annular structure arranged axially around the joint body.
[0011] As a further optimized technical solution, the cross-section of the stop member is arc-shaped.
[0012] As a further optimized technical solution, the sidewall thickness of the stop member is the same as the sidewall thickness of the first connecting part and the second connecting part.
[0013] As a further optimized technical solution, both the first limiting member and the second limiting member are annular structures arranged axially around the joint body.
[0014] As a further optimized technical solution, the cross-sections of the first limiting member and the second limiting member are arc-shaped.
[0015] As a further optimized technical solution, both the first connecting part and the second connecting part are provided with a guide section with a tapered surface structure at the end for penetrating the pipe.
[0016] As a further optimized technical solution, the large-diameter end of the guide section of the first connecting part is connected to the position of the largest diameter of the adjacent first limiting member, and the large-diameter end of the guide section of the second connecting part is connected to the position of the largest diameter of the adjacent second limiting member.
[0017] As a further optimized technical solution, the fixing component is a clamp.
[0018] Beneficial effects: First, compared with the multi-layered nested and complex threaded structures in the prior art, the technical solution of this utility model, through the adoption of a two-stage fixing design of "interference limit + external clamp," significantly reduces the number of parts, effectively lowers the complexity of processing molds, and greatly shortens the processing cycle of a single piece, effectively reducing production costs and significantly improving production efficiency and economic benefits. Second, the connecting joint can be quickly installed by inserting its two ends into the pipe to be connected and fixing the fixing components, thereby effectively improving installation and maintenance efficiency. Furthermore, its simple structure is better suited to the compact space of the engine compartment. In addition, the simple structural design reduces processing difficulty, thereby increasing the production yield, while also reducing material consumption and assembly time, resulting in significant economic advantages. Attached Figure Description
[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:
[0020] Figure 1 This is a schematic diagram of the connector body structure according to an embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the usage state of one embodiment of the present invention.
[0022] In the figure: 100, connector body; 110, first connecting part; 111, first limiting member; 120, second connecting part; 121, second limiting member; 130, fixing part; 140, stop member; 150, guide section; 200, pipeline. Detailed Implementation
[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.
[0024] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.
[0026] The shapes and sizes of the components in the attached drawings do not reflect the actual proportions of the product; they are only intended to illustrate the content of this utility model.
[0027] Example 1
[0028] like Figure 1 , Figure 2 As shown, the hose connector includes a cylindrical connector body 100 and a fixing component 130 for further securing the connector body 100.
[0029] The connector body 100 is made of stainless steel, which has better strength, hardness and high temperature resistance, thus meeting the requirements of more application scenarios. The connector body 100 is open at both ends for connecting two pipes 200 that need to be connected. The connector body 100 has a first connecting part 110 and a second connecting part 120. The first connecting part 110 is used to extend into and be engaged with one end of the cavity of one pipe 200, and the second connecting part 120 is used to extend into and be engaged with one end of the cavity of another pipe 200. The outer wall of the first connecting part 110 has at least one outwardly protruding first limiting member 111, and the outer wall of the second connecting part 120 has one outwardly protruding second limiting member 121. At the same time, both the first limiting member 111 and the second limiting member 121 are annular structures arranged around the axial direction of the connector body 100. The radial dimensions of the first limiting member 111 and the second limiting member 121 are both slightly larger than the cavity size of the corresponding connecting pipe 200, thereby making the connector body 100 and the pipe 200 form an interference fit, so that the first connecting part 110 and the second connecting part 120 are stably locked in the pipe 200, preventing axial detachment. In this embodiment, the radial dimensions of the first limiting member 111 and the second limiting member 121 are both 5%-8% larger than the inner diameter of the corresponding connecting pipe 200. When it is necessary to insert the first connecting part 110 and the second connecting part 120 into the corresponding connecting pipe 200, it can be achieved by the deformation of the pipe 200.
[0030] Multiple fixing components 130 are detachably disposed on the outside of the first connecting portion 110 and the second connecting portion 120. After the first connecting portion 110 and the second connecting portion 120 extend into the pipe 200, the multiple fixing components 130 are used to be spaced apart on the pipe 200 outside the first connecting portion 110 and the second connecting portion 120 to press the first connecting portion 110 and the second connecting portion 120 together.
[0031] In this embodiment, the fixing component 130 is a common clamp, and two clamps are provided. The outer sides of the first connecting part 110 and the second connecting part 120 are respectively used to arrange a clamp.
[0032] Furthermore, to more conveniently limit the connection lengths of the first connecting part 110 and the second connecting part 120 to the pipe 200, a stop member 140 is provided between the first connecting part 110 and the second connecting part 120. Thus, during installation, the first connecting part 110 and the second connecting part 120 are inserted into the cavities of the two pipes 200 respectively, until the stop member 140 abuts against the end face of the pipe 200. Subsequently, by installing clamps, the pipe wall of the pipe 200 is pressed inward against the outer sides of the first connecting part 110 and the second connecting part 120, further enhancing the sealing and connection strength.
[0033] In this embodiment, the stop 140 is an annular structure arranged axially around the connector body 100, and the cross-section of the stop 140 is arc-shaped.
[0034] Furthermore, the cross-sections of the first limiting member 111 and the second limiting member 121 are arc-shaped. The purpose of this design is to form a smooth guide slope when the pipe 200 is inserted, which significantly reduces the initial contact resistance between the limiting member and the inner wall of the pipe 200, and avoids jamming or scratching caused by rigid right-angled edges. It is especially suitable for the rapid assembly of flexible hoses such as rubber and plastic.
[0035] Furthermore, both the first connecting portion 110 and the second connecting portion 120 have a guide section 150 with a tapered surface structure at the end for insertion into the pipe 200. In this embodiment, the larger diameter end of the guide section 150 on the first connecting portion 110 is connected to the position of the largest diameter of the first limiting member 111, and the larger diameter end of the guide section 150 on the second connecting portion 120 is connected to the position of the largest diameter of the second limiting member 121. In this way, the smaller diameter end of the guide section 150 (tapered surface structure) extends into the pipe 200 first, and the larger diameter end smoothly connects with the position of the largest diameter of the limiting member. This design allows the tapered surface to first expand the flexible material (such as a rubber hose) at the port of the pipe 200 when the connector is inserted into the pipe 200, forming an expanded guide space, avoiding direct rigid collision between the limiting member and the port of the pipe 200, significantly reducing insertion resistance, and is especially suitable for rapid installation in confined spaces.
[0036] In this embodiment, the connector body 100 is a cylindrical component with uniform wall thickness. The wall thickness of the stop 140, the first limiting member 111, the second limiting member 121, and the guide section 150 on the connector body 100 is the same, that is, the same as the side wall thickness of the first connecting part 110 and the second connecting part 120. The stop 140, the first limiting member 111, the second limiting member 121, and the guide section 150 on the connector body 100 are formed by die casting.
[0037] Example 2
[0038] The main difference between this embodiment and Embodiment 1 lies in the number of limiting members. In this embodiment, the outer wall of the first connecting portion 110 has two or more outwardly protruding first limiting members 111, which are spaced apart axially. The outer wall of the second connecting portion 120 has two or more outwardly protruding second limiting members 121, which are spaced apart axially. At this time, the larger diameter end of the guide section 150 on the first connecting portion 110 is connected to the position of maximum diameter of the adjacent first limiting member 111, and the larger diameter end of the guide section 150 on the second connecting portion 120 is connected to the position of maximum diameter of the adjacent second limiting member 121.
[0039] Example 3
[0040] The main difference between this embodiment and Embodiment 1 is that the shape of the stop member 140 is different. In this embodiment, the cross-section of the stop member 140 is rectangular or polygonal.
[0041] Example 4
[0042] The main difference between this embodiment and Embodiment 1 is that the number of fixing components 130 is different. In this embodiment, four fixing components 130 are provided. After the first connecting part 110 and the second connecting part 120 extend into the pipe 200, two fixing components 130 are used to be spaced apart on the outside of the first connecting part 110, and the other two fixing components 130 are used to be spaced apart on the outside of the second connecting part 120.
[0043] Example 5
[0044] The main difference between this embodiment and Embodiment 1 is the choice of the fixing component 130. In this embodiment, the fixing component 130 is a cable tie.
[0045] In summary, the flexible hose connector provided by this utility model has a simple and compact structure, which is more suitable for some narrow layout spaces in automobiles. On the other hand, the connection structure of the first limiting member 111 and the second limiting member 121 set at both ends is more compatible with the material characteristics of the hose, which can fully guarantee the reliability and stability of the hose connection. The structure is reasonably set and easy to install.
[0046] It is understood that the above description is merely exemplary and the embodiments of this application do not limit the scope of the application.
[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.
Claims
1. A hose connection joint comprising a cylindrical joint body (100) arranged with open ends for communicating two pipes (200) to be connected, characterized in that, The connector body (100) has a first connecting part (110) and a second connecting part (120). The first connecting part (110) is used to extend into one end of the cavity of a pipe (200), and the second connecting part (120) is used to extend into one end of the cavity of another pipe (200). The outer wall of the first connecting part (110) has at least one first limiting member (111) protruding outward, and the outer wall of the second connecting part (120) has at least one second limiting member (121) protruding outward. The radial dimensions of the first limiting member (111) and the second limiting member (121) are slightly larger than the cavity dimensions of the corresponding connecting pipe (200) so that the first connecting part (110) and the second connecting part (120) are stably locked in the pipe (200). The hose connector also includes a plurality of fixing parts (130) detachably disposed on the outside of the first connecting part (110) and the second connecting part (120). After the first connecting part (110) and the second connecting part (120) extend into the pipe (200), the plurality of fixing parts (130) are used to be spaced apart on the pipe (200) outside the first connecting part (110) and the second connecting part (120) to press the first connecting part (110) and the second connecting part (120) together.
2. The hose connection according to claim 1, characterized in that A stop (140) is provided between the first connecting part (110) and the second connecting part (120) to limit the connection length of the first connecting part (110) and the second connecting part (120) to the pipe (200).
3. The hose connection according to claim 2, characterized in that The stop (140) is an annular structure arranged axially around the connector body (100).
4. The hose connection according to claim 3, characterized in that The cross-section of the stop (140) is arc-shaped.
5. The hose connection coupling of claim 3, wherein, The sidewall thickness of the stop (140) is the same as that of the sidewall thickness of the first connecting part (110) and the second connecting part (120).
6. The hose connection coupling of claim 1, wherein, Both the first limiting member (111) and the second limiting member (121) are annular structures arranged axially around the connector body (100).
7. The hose connection according to claim 6, characterized in that The cross-sections of the first limiting member (111) and the second limiting member (121) are arc-shaped.
8. The hose connection according to claim 7, characterized in that Both the first connecting part (110) and the second connecting part (120) are provided with a guide section (150) with a tapered surface structure at the end for penetrating into the pipe (200).
9. The hose connection according to claim 8, characterized in that One end of the guide section (150) of the first connecting part (110) with a large diameter is connected to the position of the largest diameter of the adjacent first limiting member (111), and one end of the guide section (150) of the second connecting part (120) with a large diameter is connected to the position of the largest diameter of the adjacent second limiting member (121).
10. The hose connection according to any one of claims 1 to 9, characterized in that The fixing component (130) is a clamp.