External buckling type oil pipe quick connection structure, oil pressure disc brake system and bicycle

Abstract

The utility model relates to an external buckling type oil pipe quick connection structure and an oil pressure disc brake system. The structure comprises a connecting piece, an adapter piece and an outer fastener, oil ways penetrate through the connecting piece and the adapter piece, and the connecting piece and the adapter piece are connected in an inserted mode so as to be communicated with the oil ways. The connecting piece at least comprises a main inserting part, an annular edge part, a first outer buckling groove and at least one sealing ring; the adapter at least comprises a main sleeving part which is internally through, an accommodating cavity which is formed in the first end of the main sleeving part and is used for accommodating the main inserting part in a matched manner, and a second outer buckling groove which is formed in the axial side wall, close to the second end, of the main sleeving part; wherein the outer buckling piece is embedded into the first outer buckling groove and the second outer buckling groove so as to fix the assembling positions of the connecting piece and the adapting piece. The oil pipe can penetrate through the oil pipe conveniently, the oil pipe can be assembled and fixed without matching of tools, an oil way is smooth and does not leak oil, and rapid assembly of the oil pipe in an oil pressure disc brake system is greatly facilitated.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic disc brake technology, specifically to an external snap-fit ​​hydraulic hose quick-connect structure, a hydraulic disc brake system, and a bicycle. Background Technology

[0002] A hydraulic bicycle braking system mainly consists of a hydraulic brake upper cylinder on the bicycle, a brake lower cylinder mounted next to the tire, and hydraulic hoses connecting the two. The brake lower cylinder has brake calipers that work with the brake discs mounted on the front / rear wheels. When installing a braking system on an internally cabled bicycle, the high-pressure hydraulic hose connected to the hydraulic brake upper / lower cylinder must pass through the inside of the bicycle frame and connect to the hydraulic brake upper / lower cylinder at the other end.

[0003] Because the brake lines are pre-filled with brake fluid, the connectors at both ends are sealed. The usual sealing method is a surface seal; after the brake lines pass through the frame, installing the connectors typically requires a wrench to tighten the connector screws, causing internal parts to deform and create a seal. However, this method requires a set torque from the wrench, and insufficient torque poses a risk of leakage, making it time-consuming and labor-intensive. Therefore, we propose an external snap-fit ​​brake line quick-connect structure, a hydraulic disc brake system, and a bicycle. Utility Model Content

[0004] This application provides an external snap-fit ​​hydraulic hose quick-connect structure, a hydraulic disc brake system, and a bicycle, which at least solves the problem that in the prior art, hydraulic hose joint installation generally requires a wrench to tighten the hydraulic hose joint screws, causing internal parts to deform and form a seal, which poses a risk of oil leakage and is time-consuming and labor-intensive.

[0005] In a first aspect, embodiments of this application provide an externally snap-fit ​​oil pipe quick-connect structure, including a connector, an adapter, and an external fastener for positioning the connector and the adapter at their assembly positions. Both the connector and the adapter have internally connected oil passages, and the connector and the adapter are inserted into each other to connect the oil passages.

[0006] The connector includes at least a main plug portion, an annular edge portion formed on the axial sidewall of the second end of the main plug portion, a first external groove opened in the middle of the annular edge portion, and at least one sealing ring sleeved on the sidewall of the main plug portion near the first end.

[0007] The adapter includes at least an internally penetrating main socket, a receiving cavity opened at the first end of the main socket to match and accommodate the main plug, and a second external groove opened on the axial sidewall of the main socket near the second end.

[0008] Wherein, after the connector and the adapter are assembled, the outer fastener is embedded in the first outer fastener groove and the second outer fastener groove to fix the assembly position of the connector and the adapter.

[0009] Optionally, the external fastener includes:

[0010] The first fastener is cotter pin shaped and has an Ω-shaped cross-section. The two free ends of the first fastener are fastening edges. After elastic deformation, the two fastening edges are respectively embedded in the first outer fastening groove and the second outer fastening groove to position the assembly position of the connector and the adapter.

[0011] The second fastener is a strip-shaped structure with external buckling protrusions formed on both sides in the width direction, which fasten to the outside of the two free ends of the buckle portion to close the opening of the buckle portion.

[0012] Optionally, the second end of the connector is provided with a first oil needle portion that is matched and inserted into the free end of the first oil pipe.

[0013] Optionally, the free end of the first oil pipe is fitted with an oil pipe sleeve for external clamping to fix the first oil needle and the first oil pipe.

[0014] Optionally, the second end of the main sleeve is integrally formed on the upper hydraulic brake pump / lower hydraulic brake pump and communicates with the hydraulic circuit of the upper hydraulic brake pump / lower hydraulic brake pump, so that after the quick-connect snap-fit, it can be connected to the upper hydraulic brake pump / lower hydraulic brake pump through the first oil pipe.

[0015] Optionally, a hexagonal bolt portion is formed on the outer wall of the main sleeve, and an external thread portion is formed on the outer wall of its second end, wherein the external thread portion is engaged and fixed with the internal thread provided on the upper pump / lower pump of the hydraulic brake.

[0016] Optionally, a second sealing ring is fitted onto the outer wall of the second end of the main sleeve.

[0017] Optionally, the second end of the main sleeve is formed with a second oil needle portion, and the second oil needle portion is inserted and fixed inside the second oil pipe to connect the oil passages of the first oil pipe and the second oil pipe after the quick-connect is snapped.

[0018] Secondly, embodiments of this application provide a hydraulic disc brake system, which includes the external snap-fit ​​hydraulic hose quick-connect structure described in the first aspect.

[0019] Thirdly, embodiments of this application provide a bicycle, which includes the external snap-on hydraulic hose quick-connect structure described in the first aspect, or the hydraulic disc brake system described in the second aspect.

[0020] Compared to related technologies, the external snap-fit ​​hydraulic hose quick-connect structure, hydraulic disc brake system, and bicycle provided in this application embodiment have at least the following technical advantages:

[0021] The main connector and main sleeve are inserted and installed together. A sealing ring is used to seal the gap between the main connector and the inner cavity of the receiving chamber, preventing oil leakage. Then, a first fastener in the shape of an open pin is used. The two fastening edges elastically deform and embed into the first and second outer fastening grooves respectively, completing the positioning of the connector and adapter. The second fastener is then fastened at the opening of the first fastener, completing the quick-connect positioning. This installation requires no tools and will not fall off, facilitating the installation of the oil hose in the hydraulic disc brake system. On one hand, it is suitable for length supplementation when the oil hose in the hydraulic disc brake system is insufficient. On the other hand, it can also be used in conjunction with the overall structure of the hydraulic brake upper pump and / or brake lower pump with an adapter structure, serving as a complete hydraulic disc brake system, increasing installation convenience and user ease of operation.

[0022] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of an externally snap-fit ​​oil pipe quick-connect structure according to an exemplary embodiment.

[0025] Figure 2 This is an exploded schematic diagram of an externally snap-fit ​​oil pipe quick-connect structure according to an exemplary embodiment.

[0026] Figure 3 This is a cross-sectional view of an externally snap-fit ​​tubing quick-connect structure according to an exemplary embodiment.

[0027] Figure 4 This is a side view of an external snap-fit ​​tubing quick-connect structure according to another exemplary embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] Connector 10: Main insertion part 101, first oil needle part 102, ring edge part 103, first outer groove 104, sealing ring 105;

[0030] Adapter 20: Main socket 201, receiving cavity 202, second external snap groove 203, second oil needle part 204;

[0031] First oil pipe 30; Second oil pipe 40; Oil pipe sleeve 50; First fastener 60; Fastening edge 601; Second fastener 70; Outer fastening protrusion 701. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In related technologies, when installing a braking system on an internally cabled bicycle, the high-pressure hydraulic hose connected to the hydraulic brake booster / suppressor needs to pass through the bicycle frame and connect to the booster / suppressor at the other end. Since the hose is pre-filled with brake fluid, the hose joints at both ends are sealed. The usual sealing method is a surface seal. After the hose has passed through the frame, tightening the hose joint screws with a wrench usually deforms the internal parts to create a seal. However, this method requires the wrench to apply a set torque; insufficient torque poses a risk of leakage and is time-consuming and labor-intensive.

[0036] Based on the above, this utility model provides an external snap-on hydraulic hose quick-connect structure, a hydraulic disc brake system, and a bicycle. The following detailed description is provided in conjunction with specific embodiments and accompanying drawings.

[0037] Example 1

[0038] This utility model embodiment provides an external snap-fit ​​oil pipe quick-connect structure. Figure 1 This is a three-dimensional schematic diagram of an externally snap-fit ​​oil pipe quick-connect structure according to an exemplary embodiment. Figure 2 This is an exploded schematic diagram of an externally snap-fit ​​oil pipe quick-connect structure according to an exemplary embodiment. Figure 3 This is a cross-sectional view of an externally snap-fit ​​tubing quick-connect structure according to an exemplary embodiment. (See example...) Figure 1-3 As shown, the externally snap-fit ​​oil pipe quick-connect structure includes a connector 10, an adapter 20, and an external fastener for positioning the connector 10 and adapter 20 at their assembly positions. Both the connector 10 and adapter 20 have internal oil passages. The connector 10 and adapter 20 are inserted into each other to connect the oil passages. (Continue referring to the attached diagram...) Figure 1-3 The second end of the connector 10 is provided with a first oil needle part 102 that is matched and inserted into the free end of the first oil pipe 30; the free end of the first oil pipe 30 is equipped with an oil pipe sleeve 50 for external clamping to fix the first oil needle part 102 and the first oil pipe 30. It is understood that in this embodiment, the outer diameters of the connector 10 and the adapter 20 are smaller than those of the traditional fixed oil needle, and are more regular, which makes it easier to thread and assemble the bicycle frame inside the oil pipe.

[0039] Continue to refer to the appendix Figure 2 The connector 10 includes at least a main plug portion 101, an annular edge portion 103 formed on the axial sidewall of the second end of the main plug portion 101, a first external groove 104 opened in the middle of the annular edge portion 103, and at least one sealing ring 105 sleeved on the sidewall of the main plug portion 101 near the first end. In this embodiment, there are two sealing rings 105. The adapter 20 includes at least a through main sleeve portion 201, a receiving cavity 202 opened at the first end of the main sleeve portion to match and accommodate the main plug portion 101, and a second external groove 203 opened on the axial sidewall of the main sleeve portion 201 near the second end.

[0040] The outer fastener is embedded in the first outer fastener groove 104 and the second outer fastener groove 203 after the connector 10 and the adapter 20 are assembled to fix the assembly position of the connector 10 and the adapter 20.

[0041] Furthermore, Figure 4 This is a side view of an externally snap-fit ​​tubing quick-connect structure according to another exemplary embodiment. (Refer to the attached diagram.) Figure 1-4The outer fastener includes: a first fastener 60, which is cotter pin shaped and has an Ω-shaped cross section. The two free ends of the first fastener 60 are fastening edges 601. After elastic deformation, the two fastening edges 601 are respectively embedded in the first outer fastening groove 104 and the second outer fastening groove 203 to position the assembly position of the connector 10 and the adapter 20; and a second fastener 70, which is a strip structure and has outer fastening protrusions 701 formed on both sides in the width direction, which fasten to the outside of the two free ends of the fastening edges 601 to close the opening position of the fastening edges 601.

[0042] In the above embodiment, the first oil needle part 102 of the connector 10 is inserted into the free end of the first oil pipe 30 and is fixed by external pressure through the oil pipe sleeve 50. It can be understood that the fixing principle of the oil pipe sleeve 50 is that after the first oil needle part 102 is pressed into the free end of the first oil pipe 30, the oil pipe sleeve 50 is subjected to external pressure by the pressing machine to achieve deformation of the sleeve, thereby fixing the first oil needle part 102 and the first oil pipe 30.

[0043] Insert the first end of the main connector 101 into the inner cavity of the main sleeve 201, and gradually push it in until the front end of the main connector 101 abuts against the bottom of the receiving cavity 202 or the sealing ring 105 assembled at the front end of the main connector 101 abuts against the bottom of the receiving cavity 202. At this time, the boss positioning part 103 abuts against the outer edge of the main sleeve 201, and the sealing ring 105 abuts against and seals the gap between the main connector 101 and the inner cavity of the receiving cavity 202 to prevent oil leakage. The first fastener 60 in the shape of a cotter pin is inserted into the radial side of the connector 10 and the adapter 20. After the two fastening edges 601 are elastically deformed, they are respectively embedded in the first outer fastening groove 104 and the second outer fastening groove 203, completing the positioning of the connector 10 and the adapter 20. Then, the second fastener 70 is fastened at the opening of the first fastener 60 to complete the quick-connect positioning. No tools are required for installation and it will not fall off, which facilitates the installation of the oil pipe in the hydraulic disc brake system.

[0044] Based on the above embodiment 1, in an optional embodiment, the second end of the main sleeve 201 is integrally formed on the upper hydraulic brake pump / lower hydraulic brake pump and communicates with the oil passage of the upper hydraulic brake pump / lower hydraulic brake pump, so as to connect the upper hydraulic brake pump / lower hydraulic brake pump through the first oil pipe after the snap-fit ​​is connected.

[0045] Based on the above embodiment 1, in another optional embodiment, a hexagonal bolt portion is formed on the outer wall of the main sleeve 201, and an external thread portion is formed on the outer wall of its second end. The external thread portion is engaged and fixed with the internal thread on the upper hydraulic brake pump / lower hydraulic brake pump. By rotating the hexagonal bolt portion with a wrench, the adapter 20 is screwed into the upper hydraulic brake pump / lower hydraulic brake pump to complete the installation. A sealing ring 50 is also fitted on the outer wall of the second end of the main sleeve 201 for sealing the gap after the adapter 20 is connected and fixed to the upper hydraulic brake pump / lower hydraulic brake pump.

[0046] Based on the above embodiment 1, in the third optional embodiment, the second end of the main sleeve 201 is formed with a second oil needle 204, and the second oil needle 204 is inserted and fixed inside the second oil pipe 40 so as to connect the oil passage of the first oil pipe 30 and the second oil pipe 40 after the quick snap connection, for the connection between the two oil pipes to extend the overall oil pipe length.

[0047] In summary, the external snap-fit ​​quick-connect structure for oil pipes provided in this embodiment of the present invention, through the insertion and installation of the main plug-in part 101 and the main sleeve part 201, and with the sealing ring 105 abutting and sealing the gap between the main plug-in part 101 and the inner cavity of the receiving cavity 202, prevents oil leakage. Then, the first fastener 60 in the shape of an open pin is used, and after the two fastening edges 601 are elastically deformed, they are respectively embedded in the first external fastening groove 104 and the second external fastening groove 203 to complete the positioning of the assembly position of the connector 10 and the adapter 20. The second fastener 70 is then fastened at the opening of the first fastener 60 to complete the quick-connect positioning. No tools are required for installation and it will not fall off, which facilitates the installation of oil pipes in hydraulic disc brake systems.

[0048] Example 2

[0049] Embodiment 2 of this application provides a hydraulic disc brake system, which includes the external snap-fit ​​hydraulic hose quick-connect structure described in Embodiment 1 above.

[0050] Example 3

[0051] Embodiment 3 of this application provides a bicycle, which includes the external snap-on hydraulic hose quick-connect structure of Embodiment 1, or the hydraulic disc brake system of Embodiment 2.

[0052] Other undescribed structures are described in Example 1.

[0053] In summary, the external snap-fit ​​quick-connect structure for hydraulic hoses, the hydraulic disc brake system, and the bicycle provided by this utility model embodiment, through the insertion and installation of the main plug-in part 101 and the main sleeve part 201, and with the sealing ring 105 abutting against and sealing the gap between the main plug-in part 101 and the inner cavity of the receiving cavity 202, prevents oil leakage. Subsequently, the first fastener 60 in the shape of an open pin is used, and after the two fastening edges 601 are elastically deformed, they are respectively embedded into the first external fastening groove 104 and the second external fastening groove 203, completing the positioning of the connector 10 and the adapter 20. The second fastener 70 is then fastened at the opening of the first fastener 60 to complete the quick-connect positioning. No tools are required for installation and it will not fall off, facilitating the installation of hydraulic hoses in the hydraulic disc brake system. On the one hand, it is suitable for length supplementation when the length of hydraulic hoses in the hydraulic disc brake system is insufficient. On the other hand, it can also be used in conjunction with the overall structure of the hydraulic brake upper pump and / or brake lower pump with the adapter 20 structure as a complete hydraulic disc brake system, increasing the convenience of installation and the ease of user operation.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An externally snap-fit ​​quick-connect structure for oil pipes, characterized in that, It includes a connector, an adapter, and an external fastener for positioning the connector and the adapter at their assembly positions. Both the connector and the adapter have internal oil passages, and the connector and the adapter are inserted into each other to connect the oil passages. The connector includes at least a main plug portion, an annular edge portion formed on the axial sidewall of the second end of the main plug portion, a first external groove opened in the middle of the annular edge portion, and at least one sealing ring sleeved on the sidewall of the main plug portion near the first end. The adapter includes at least an internally penetrating main socket, a receiving cavity opened at the first end of the main socket to match and accommodate the main plug, and a second external groove opened on the axial sidewall of the main socket near the second end. Wherein, after the connector and the adapter are assembled, the outer fastener is embedded in the first outer fastener groove and the second outer fastener groove to fix the assembly position of the connector and the adapter.

2. The externally threaded quick-connect structure for oil pipes as described in claim 1, characterized in that, The external fastener includes: The first fastener is cotter pin shaped and has an Ω-shaped cross-section. The two free ends of the first fastener are fastening edges. After elastic deformation, the two fastening edges are respectively embedded in the first outer fastening groove and the second outer fastening groove to position the assembly position of the connector and the adapter. The second fastener is a strip-shaped structure with external buckling protrusions formed on both sides in the width direction, which fasten to the outside of the two free ends of the buckle portion to close the opening of the buckle portion.

3. The externally threaded quick-connect structure for oil pipes as described in claim 1, characterized in that, The second end of the connector is provided with a first oil needle that is matched and inserted into the free end of the first oil pipe.

4. The externally threaded quick-connect structure for oil pipes as described in claim 3, characterized in that, The free end of the first oil pipe is fitted with an oil pipe sleeve for external clamping to fix the first oil needle and the first oil pipe.

5. The externally threaded quick-connect structure for oil pipes as described in claim 3, characterized in that, The second end of the main sleeve is integrally formed on the upper hydraulic brake pump / lower hydraulic brake pump and is connected to the oil passage of the upper hydraulic brake pump / lower hydraulic brake pump, so that after the quick-connect snap-fit, it can be connected to the upper hydraulic brake pump / lower hydraulic brake pump through the first oil pipe.

6. The externally threaded quick-connect structure for oil pipes as described in claim 1, characterized in that, The outer wall of the main sleeve is formed with a hexagonal bolt portion, and the outer wall of its second end is formed with an external thread portion, which is engaged and fixed with the internal thread on the upper pump / lower pump of the hydraulic brake.

7. The externally threaded quick-connect structure for oil pipes as described in claim 6, characterized in that, A second sealing ring is fitted on the outer wall of the second end of the main sleeve.

8. The externally threaded quick-connect structure for oil pipes as described in claim 3, characterized in that, The second end of the main sleeve is formed with a second oil needle portion, and the second oil needle portion is inserted and fixed inside the second oil pipe so as to connect the oil passage of the first oil pipe and the second oil pipe after the quick-connect is snapped.

9. A hydraulic disc brake system, characterized in that, The hydraulic disc brake system includes the external snap-fit ​​hydraulic hose quick-connect structure as described in any one of claims 1-8.

10. A bicycle, characterized in that, The bicycle includes the external snap-on hydraulic hose quick-connect structure as described in claims 1-8, or the hydraulic disc brake system as described in claim 9.

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