Oil pipe quick connection structure, oil pressure disc brake system and bicycle

Abstract

The utility model relates to an oil pipe quick connection structure, an oil pressure disc brake system and a bicycle. The oil pipe quick-connection structure comprises a first oil pipe with a through interior, a connecting piece, an adapter piece and an anti-falling piece for positioning the circumferential positions of the connecting piece and the adapter piece, oil ways penetrate through the connecting piece and the adapter piece, the first end of the connecting piece is fixed to the free end of the first oil pipe, and the second end of the connecting piece is fixed to the free end of the adapter piece. The second end of the first oil pipe is rotationally and quickly connected with the adapter to communicate with an oil path of the first oil pipe; the connecting piece at least comprises a first inserting part, a first oil needle part arranged at the first end of the first inserting part, and at least one clamping point part arranged on the side wall of the first inserting part; the adapter at least comprises a main body part with a through interior, a first accommodating cavity and a second accommodating cavity which are formed in the first end of the main body part and sequentially penetrate into an inner cavity, and a bayonet part which is formed in the side wall surface of the first accommodating cavity and is communicated to the second accommodating cavity; the oil pipe can penetrate through the oil pipe conveniently and can be assembled and fixed, 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] The utility model relates to the technical field of hydraulic disc brakes, and in particular to an oil pipe quick-connect structure, a hydraulic disc brake system and a bicycle. Background Art

[0002] A hydraulic bicycle brake system primarily consists of an upper brake pump mounted on the bicycle, a lower brake pump mounted next to the tire, and a hydraulic hose connecting the two. The lower brake pump typically has brake calipers that work with the front and rear disc brakes. When installing the brake system on a bicycle with internal wiring, the high-pressure hose connecting the upper and lower brake pumps must pass through the bicycle frame and connect to the upper and lower brake pumps at the other end.

[0003] Because the oil pipe is pre-filled with brake fluid, the oil pipe joints at both ends are sealed. The typical sealing method is a face seal. After the oil pipe is inserted into the frame, the oil pipe joint installation generally requires a wrench to tighten the oil pipe joint screws to deform the internal parts and form a seal. However, this method requires the wrench to apply a set torque. If the torque is insufficient, there is a risk of oil leakage, which is time-consuming and labor-intensive. To this end, we propose a quick-connect oil pipe structure, a hydraulic disc brake system, and a bicycle. Utility Model Content

[0004] The embodiments of the present application provide an oil pipe quick-connect structure, a hydraulic disc brake system and a bicycle, so as to at least solve the problem in the prior art that the installation of the oil pipe joint generally requires a wrench to be used to tighten the oil pipe joint screws, causing the internal parts to deform to form a seal, posing a risk of oil leakage and being relatively time-consuming and labor-intensive.

[0005] In a first aspect, an embodiment of the present application provides an oil pipe quick-connect structure, comprising a first oil pipe having an internal passage, a connector, an adapter, and an anti-dropout member for circumferentially positioning the connector and the adapter, wherein both the connector and the adapter have oil passages extending therethrough, a first end of the connector being fixed to a free end of the first oil pipe, and a second end of the connector being rotatably connected to the adapter to communicate with the oil passage of the first oil pipe;

[0006] The connecting member at least includes a first plug-in portion, a first oil needle portion provided at a first end of the first plug-in portion, and at least one clamping point portion arranged on a side wall of the first plug-in portion;

[0007] The adapter includes at least a main body portion with an internal penetration, a first accommodating cavity and a second accommodating cavity opened at the first end of the main body portion and extending into the inner cavity in sequence, and a bayonet portion opened at the side wall of the first accommodating cavity and connected to the second accommodating cavity to accommodate the clamping point portion passing through and entering the second accommodating cavity; wherein, the inner diameter of the first accommodating cavity is smaller than the inner diameter of the second accommodating cavity, and the outer diameter of the edge of the clamping point portion is smaller than the inner diameter of the second accommodating cavity and larger than the inner diameter of the first accommodating cavity.

[0008] Optionally, a free end of the first oil pipe is equipped with an oil pipe sleeve for external compression to fix the first oil needle portion and the first oil pipe.

[0009] Optionally, a ring edge portion is provided between the first plug-in portion and the first oil needle portion.

[0010] Optionally, a third accommodating cavity with a decreasing inner diameter is formed on a side of the second accommodating cavity away from the first accommodating cavity;

[0011] A second plug-in portion with a decreasing outer diameter is provided at the second end of the first plug-in portion, and an annular groove is provided on the outer side wall of the second plug-in portion, and a sealing ring is sleeved on the annular groove.

[0012] Optionally, the anti-dropping member includes:

[0013] an extension portion integrally formed at an end of the second plug-in portion facing away from the first plug-in portion;

[0014] a positioning spring, a first end of which is sleeved on the extension portion, and the other end of which abuts against the inner wall of the third accommodating cavity after the first plug-in portion is installed in the second accommodating cavity to provide an axial positioning force;

[0015] and at least one auxiliary clamping point portion arranged on the side wall of the first plug-in portion, the auxiliary clamping point portion being arranged with the same width as the clamping point portion and being staggered in the circumferential direction of the first plug-in portion, the auxiliary clamping point portion being longer than the clamping point portion and shorter than the height of the second accommodating cavity, and the end thereof close to the first plug-in portion being flush with the first end of the clamping point portion;

[0016] Wherein, a side wall surface of the first accommodating cavity is provided with a secondary clamping portion connected to the second accommodating cavity to accommodate the secondary clamping point portion passing through and entering the second accommodating cavity.

[0017] Optionally, the anti-dropping member includes:

[0018] an anti-slip groove, which is provided on the annular side wall of the first plug-in portion;

[0019] An anti-slip hole is provided on the side wall of the main body at a position corresponding to the position of the anti-slip groove after the anti-slip groove is rotated and quickly connected;

[0020] The locking bolt is threadedly assembled in the anti-dropout hole, and the inner end of the locking bolt extends into the anti-dropout groove for positioning fit.

[0021] Optionally, a second oil needle portion is integrally formed on the second end of the adapter, and the second oil needle portion is plugged and fixed inside the second oil pipe to connect the oil paths of the first oil pipe and the second oil pipe after rotating the quick connector.

[0022] Optionally, the adapter is integrally formed on the oil brake upper pump / brake lower pump and is connected to the oil circuit of the oil brake upper pump / brake lower pump, so as to be connected to the oil brake upper pump / brake lower pump after rotating the quick connect.

[0023] In a second aspect, an embodiment of the present application provides a hydraulic disc brake system, which includes the oil pipe quick-connect structure described in the first aspect.

[0024] In a third aspect, an embodiment of the present application provides a bicycle, wherein the bicycle includes the oil pipe quick-connect structure described in the first aspect, or

[0025] The hydraulic disc brake system described in the second aspect above.

[0026] Compared to related technologies, the oil pipe quick-connect structure, hydraulic disc brake system, and bicycle provided by the embodiments of the present application have at least the following technical effects:

[0027] Through the rotational quick connection of the connecting piece and the adapter, in conjunction with the setting of the card point part and the bayonet part, after the rotational quick connection, the card point part is axially positioned by the step formed at the junction of the first accommodating chamber and the second accommodating chamber, and at the same time, in conjunction with the anti-slip part, the axial and circumferential quick connection positioning of the connecting piece and the adapter can be achieved. The auxiliary fixation of the oil pipe can be completed without tools or with only simple cooperation of tools without falling off, and the oil path is unobstructed and there is no oil leakage, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system. On the one hand, it is suitable for making up the length of the oil pipe in the hydraulic disc brake system when the length is insufficient. On the other hand, it can also be matched with the overall structure of the oil brake upper pump and / or brake lower pump with an adapter structure to be used as a complete set of hydraulic disc brake systems, thereby increasing the convenience of installation and the simplicity of user operation.

[0028] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a three-dimensional schematic diagram of an oil pipe quick-connect structure according to an exemplary embodiment.

[0031] Figure 2 The figure is a schematic diagram of an explosion of an oil pipe quick-connect structure according to an exemplary embodiment.

[0032] Figure 3 The figure is an exploded cross-sectional view of an oil pipe quick-connect structure according to an exemplary embodiment.

[0033] Figure 4 It is a three-dimensional schematic diagram of an oil pipe quick-connect structure according to another exemplary embodiment.

[0034] Figure 5 It is a schematic diagram of an explosion of an oil pipe quick-connect structure according to another exemplary embodiment.

[0035] Figure 6 The figure is an exploded cross-sectional view of an oil pipe quick-connect structure according to another exemplary embodiment.

[0036] Figure 7 The figure is a schematic diagram showing the first step of assembling a quick-connect structure of an oil pipe according to an exemplary embodiment.

[0037] Figure 8 It is a schematic diagram of the second assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

[0038] Figure 9 1 is a schematic diagram of the third step of assembling the oil pipe quick-connect structure according to an exemplary embodiment.

[0039] Figure 10 The figure is a cross-sectional view showing the assembly steps of a quick-connect structure for an oil pipe according to an exemplary embodiment.

[0040] Figure 11 It is a cross-sectional view of the second assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

[0041] Figure 12 1 is a cross-sectional view of the third assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

[0042] Figure 13 1 is a schematic diagram showing the first step of assembling an oil pipe quick-connect structure according to another exemplary embodiment.

[0043] Figure 14 It is a schematic diagram of the second assembly step of the oil pipe quick-connect structure according to another exemplary embodiment.

[0044] Figure 15 Schematic diagram of the rotating quick-connect position in step three of assembling the oil pipe quick-connect structure according to another exemplary embodiment.

[0045] Description of reference numerals:

[0046] Connector 10: first plug-in portion 101, second plug-in portion 102, boss positioning portion 103, first oil needle portion 104, clamping point portion 105, auxiliary clamping point portion 1051, annular groove 106, sealing ring 107, and annular edge portion 108;

[0047] Adapter 20: main body 201, first accommodating cavity 202, second accommodating cavity 203, third accommodating cavity 204; bayonet portion 205, auxiliary bayonet portion 2051, second oil needle portion 206;

[0048] The first oil pipe 30 ; the oil pipe sleeve 40 ; the positioning spring 50 ; the locking bolt 601 , the anti-dropout hole 602 , the anti-dropout groove 603 ; and the second oil pipe 70 . DETAILED DESCRIPTION

[0049] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0050] 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 positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on 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.

[0051] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0052] In related technology, when installing a brake system on an internally routed bicycle, the high-pressure oil pipe connected to the upper brake pump / lower brake pump must pass through the inside of the bicycle frame and connect to the upper brake pump / lower brake pump at the other end. Because the oil pipe is pre-filled with brake fluid, the oil pipe joints at both ends are sealed. The usual sealing method is face sealing. After the oil pipe is passed through the frame, the installation of the oil pipe joint generally requires a wrench to tighten the oil pipe joint screws to deform the internal parts and form a seal. However, this method requires the wrench to apply a set torque. If the torque is insufficient, there is a risk of oil leakage, which is time-consuming and labor-intensive.

[0053] Based on the above situation, the embodiments of the present invention provide an oil pipe quick-connect structure, a hydraulic disc brake system and a bicycle, which are described in detail below with reference to specific embodiments and drawings.

[0054] Example 1

[0055] An embodiment of the utility model provides an oil pipe quick-connect structure. Figure 1 It is a three-dimensional schematic diagram of an oil pipe quick-connect structure according to an exemplary embodiment. Figure 2 The figure is a schematic diagram of an explosion of an oil pipe quick-connect structure according to an exemplary embodiment. Figure 3 FIG. 1 is an exploded cross-sectional view of an oil pipe quick-connect structure according to an exemplary embodiment. Figure 1-3 As shown, the oil pipe quick-connect structure includes a first oil pipe 30 with an internal passage, a connecting member 10, an adapter 20, and an anti-slip member for positioning the connecting member 10 and the adapter 20 in a circumferential position. The connecting member 10 and the adapter 20 both have oil circuits running through them. The first end of the connecting member 10 is fixed to the free end of the first oil pipe 30, and the second end thereof is rotated and quickly connected with the adapter 20 to connect the oil circuit of the first oil pipe 30; the free end of the first oil pipe 30 is equipped with an oil pipe sleeve 40 for external compression to fix the first oil needle portion 104 and the first oil pipe 30.

[0056] The connector 10 comprises at least a first plug-in portion 101, a first oil needle portion 104 provided at a first end of the first plug-in portion 101, and at least one clamping point portion 105 arranged on a side wall of the first plug-in portion 101;

[0057] The adapter 20 includes at least an internally through-body main body 201, a first accommodating cavity 202 and a second accommodating cavity 203 opened at the first end of the main body 201 and extending successively deeper into the inner cavity, and a bayonet portion 205 opened at the side wall of the first accommodating cavity 202 and connected to the second accommodating cavity 203 to accommodate the card point portion 105 passing through and entering the second accommodating cavity 203; wherein, the inner diameter of the first accommodating cavity 202 is smaller than the inner diameter of the second accommodating cavity 203, and the outer diameter of the edge of the card point portion 105 is smaller than the inner diameter of the second accommodating cavity 203 and larger than the inner diameter of the first accommodating cavity 202; in this embodiment, the number of the card point portions 105 is two and they are symmetrically arranged on the side wall of the first plug-in portion 101, and the number of the bayonet portions 205 is two and they are symmetrically arranged to match the two card point portions 105 passing through.

[0058] Refer to the attached Figure 1-3 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, making it easier to thread and assemble the oil pipe into the bicycle frame.

[0059] In this embodiment, continue to refer to the attached Figure 1-3 The anti-dropping member includes: an extension portion 103, which is integrally formed at one end of the second plug-in portion 102 away from the first plug-in portion 101;

[0060] The first end of the positioning spring 50 is sleeved on the extension portion 103, and the other end thereof abuts against the inner wall of the third accommodating cavity 204 after the first plug-in portion 101 is inserted into the second accommodating cavity 203 to provide axial positioning force;

[0061] and at least one auxiliary clamping point portion 1051 arranged on the side wall of the first plug-in portion 101. The auxiliary clamping point portion 1051 is arranged with the same width as the clamping point portion 105 and is staggered in the circumferential direction of the first plug-in portion 101. The auxiliary clamping point portion 1051 is longer than the length of the clamping point portion 105 and shorter than the height of the second accommodating cavity 203. The end of the auxiliary clamping point portion 1051 close to the first plug-in portion 101 is flush with the first end of the clamping point portion 105.

[0062] The side wall of the first accommodating cavity 202 is provided with a secondary clamping portion 2051 which is connected to the second accommodating cavity 203 to accommodate the secondary clamping point portion 1051 passing through and entering the second accommodating cavity 203 .

[0063] Figure 7 The figure is a schematic diagram showing the first step of assembling a quick-connect structure of an oil pipe according to an exemplary embodiment. Figure 8 It is a schematic diagram of the second assembly step of the oil pipe quick-connect structure according to an exemplary embodiment. Figure 9 1 is a schematic diagram of the third step of assembling the oil pipe quick-connect structure according to an exemplary embodiment. Figure 10 The figure is a cross-sectional view showing the assembly steps of a quick-connect structure for an oil pipe according to an exemplary embodiment. Figure 11It is a cross-sectional view of the second assembly step of the oil pipe quick-connect structure according to an exemplary embodiment. Figure 12 1 is a cross-sectional view of the third assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

[0064] In the technical solutions of the above embodiments, refer to the attached Figure 7-12 In step 1, the first oil needle portion 104 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 40. It can be understood that the fixing principle of the oil pipe sleeve 40 is that after the first oil needle portion 104 is pressed into the free end of the first oil pipe 30, pressure is applied to the outside of the oil pipe sleeve 40 by a pressing machine to achieve compression deformation, thereby fixing the first oil needle portion 104 and the first oil pipe 30; and a positioning spring 50 is installed on the boss positioning portion 103 of the connector 10;

[0065] Step 2: Align the connector 10 and the positioning spring 50 with the adapter 20, align the clamping point 105 with the clamping port 205, and align the auxiliary clamping point 1051 with the auxiliary clamping port 2051, and then plug them together;

[0066] Step three, after the card point portion 105 and the auxiliary card point portion 1051 have entered the second accommodating chamber 203, rotate the connector 10 clockwise / counterclockwise until the auxiliary card point portion 1051 rotates to one of the bayonet portions 205, release the pressure, and the auxiliary card point portion 1051 is engaged into the bayonet portion 205 under the elastic force of the positioning spring 50, and the card point portion 105 is axially positioned by the step formed at the junction of the first accommodating chamber 202 and the second accommodating chamber 203. At this time, the connector 10 and the adapter 20 have completed the quick-connect positioning in the axial and circumferential directions, and no tools are required to assist in fixing and they will not fall off, which facilitates the installation of the oil pipe in the hydraulic disc brake system.

[0067] In this embodiment, continue to refer to the attached Figure 1-3 The free end of the first oil pipe 30 is equipped with an oil pipe sleeve 40 for external compression to fix the first oil needle portion 104 and the first oil pipe 30; further, a ring edge portion 108 is provided between the first plug-in portion 101 and the first oil needle portion 104, which is used for positioning the first oil needle portion 104 after being inserted into the first oil pipe 30, and for axial positioning of the first plug-in portion 101 of the connector 10 after entering the interior of the adapter 20.

[0068] In this embodiment, continue to refer to the attached Figure 1-3A third accommodating chamber 204 with a decreasing inner diameter is provided on the side of the second accommodating chamber 203 away from the first accommodating chamber 202; a second plug-in portion 102 with a decreasing outer diameter is provided at the second end of the first plug-in portion 101, and an annular groove 106 is provided on the outer wall of the second plug-in portion 102, and a sealing ring 107 is sleeved on the annular groove 106. After the quick-connect installation, the second plug-in portion 102 extends into the third accommodating chamber 204, and the presence of the sealing ring 107 forms a sealed insulation between the inner cavity of the third accommodating chamber 204-the sealing ring 107-the outer wall of the second plug-in portion 102, effectively maintaining the oil path unobstructed and preventing oil leakage.

[0069] In summary, the oil pipe quick-connect structure provided by the embodiment of the present invention, through the rotational quick connection of the connecting member 10 and the adapter 20, cooperates with the setting of the card point portion 105 and the auxiliary card point portion 1051. After the rotational quick connection, the auxiliary card point portion 1051 is carded into the bayonet portion 205 under the elastic force of the positioning spring 50, and the card point portion 105 is axially positioned by the step formed at the junction of the first accommodating chamber 202 and the second accommodating chamber 203. At this time, the connecting member 10 and the adapter 20 have completed the axial and circumferential quick-connect positioning, the oil path is unobstructed and does not leak oil, no tools are required for auxiliary installation, and the installation is quick and convenient and will not fall off easily, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0070] Example 2

[0071] The difference between this embodiment and embodiment 1 is that embodiment 2 of the present utility model provides an oil pipe quick-connect structure. Figure 4 It is a three-dimensional schematic diagram of an oil pipe quick-connect structure according to another exemplary embodiment.

[0072] Figure 5 It is a schematic diagram of an explosion of an oil pipe quick-connect structure according to another exemplary embodiment. Figure 6 FIG. 1 is an exploded cross-sectional view of an oil pipe quick-connect structure according to another exemplary embodiment. Figure 4-6 As shown, the oil pipe quick-connect structure includes a first oil pipe 30 with an internal passage, a connector 10, an adapter 20, and an anti-dropping member for circumferentially positioning the connector 10 and the adapter 20. The connector 10 and the adapter 20 both have oil passages extending therethrough. The first end of the connector 10 is fixed to the free end of the first oil pipe 30, and the second end thereof is rotatably connected to the adapter 20 to communicate with the oil passage of the first oil pipe 30.

[0073] The connector 10 comprises at least a first plug-in portion 101, a first oil needle portion 104 provided at a first end of the first plug-in portion 101, and at least one clamping point portion 105 arranged on a side wall of the first plug-in portion 101;

[0074] The adapter 20 includes at least an internally through-body main body 201, a first accommodating cavity 202 and a second accommodating cavity 203 opened at the first end of the main body 201 and extending successively deeper into the inner cavity, and a bayonet portion 205 opened at the side wall of the first accommodating cavity 202 and connected to the second accommodating cavity 203 to accommodate the card point portion 105 passing through and entering the second accommodating cavity 203; wherein, the inner diameter of the first accommodating cavity 202 is smaller than the inner diameter of the second accommodating cavity 203, and the outer diameter of the edge of the card point portion 105 is smaller than the inner diameter of the second accommodating cavity 203 and larger than the inner diameter of the first accommodating cavity 202; in this embodiment, the number of the card point portions 105 is two and they are symmetrically arranged on the side wall of the first plug-in portion 101, and the number of the bayonet portions 205 is two and they are symmetrically arranged to match the two card point portions 105 passing through.

[0075] Continue to refer to the attached Figure 4-6 , the anti-slip member includes: an anti-slip groove 603, which is opened on the annular side wall of the first plug-in portion 101;

[0076] The anti-slip hole 602 is provided on the side wall of the main body 201 and corresponds to the position of the anti-slip groove 603 after the quick-connect rotation;

[0077] The locking bolt 601 is threadedly assembled in the anti-slip hole 602, and its inner end extends into the anti-slip groove 603 for positioning and fitting; further, in this embodiment, the locking bolt 601 is a hexagon socket screw, which can enter the anti-slip hole 602 after assembly, and will not leave a screw cap protrusion on the surface of the main body 201, which is more beautiful and practical.

[0078] In the technical solutions of the above embodiments, refer to the attached Figure 7-12 In step 1, the first oil needle portion 104 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 40. It can be understood that the fixing principle of the oil pipe sleeve 40 is that after the first oil needle portion 104 is pressed into the free end of the first oil pipe 30, pressure is applied to the outside of the oil pipe sleeve 40 by a pressing machine to achieve compression deformation, thereby fixing the first oil needle portion 104 and the first oil pipe 30; and a positioning spring 50 is installed on the boss positioning portion 103 of the connector 10;

[0079] Step 2: Align the connector 10 and the positioning spring 50 with the adapter 20, and align the clamping point 105 with the bayonet portion 205 before plugging them together. After the clamping point 105 enters the second accommodating cavity 203, rotate the connector 10 clockwise / counterclockwise until the anti-slip groove 603 on the first plug-in portion 101 rotates to mate with the anti-slip hole 602 on the adapter 20. At this time, the clamping point 105 is axially positioned by the step formed at the junction of the first accommodating cavity 202 and the second accommodating cavity 203.

[0080] Step three, install the locking bolt 601 into the inner thread of the anti-slip hole 602 and tighten the thread until the inner end of the locking bolt 601 extends into the anti-slip groove 603 for positioning. The axial and circumferential quick-connect positioning of the connector 10 and the adapter 20 are completed. Only simple cooperation of tools is required to complete the auxiliary fixation of the oil pipe and it will not fall off, which facilitates the installation of the oil pipe in the hydraulic disc brake system.

[0081] For other structures not described, refer to Example 1.

[0082] In summary, the oil pipe quick-connect structure provided by the embodiment of the present invention, through the rotational quick connection of the connecting member 10 and the adapter 20, cooperates with the setting of the card point portion 105 and the bayonet portion 205. After the rotational quick connection, the anti-slip groove 603 on the first plug-in portion 101 is rotated to match the anti-slip hole 602 on the adapter 20, and the card point portion 105 is axially positioned by the step formed at the junction of the first accommodating chamber 202 and the second accommodating chamber 203. At this time, the locking bolt 601 is threadedly installed in the anti-slip hole 602 to achieve the axial and circumferential quick-connect positioning of the connecting member 10 and the adapter 20. The oil path is unobstructed and there is no oil leakage. Only simple cooperation of tools is required to complete the auxiliary fixation of the oil pipe and it will not fall off, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0083] Example 3

[0084] This embodiment differs from Example 1 in that Example 3 provides a quick-connect oil pipe structure. A second oil needle 206 is integrally formed on the second end of the adapter 20. This second oil needle 206 is inserted and fixed within the second oil pipe 70, connecting the oil passages between the first oil pipe 30 and the second oil pipe 70 after the quick-connect is rotated. It is understood that the free end of the second oil pipe 70 is also equipped with an oil pipe sleeve 40 for external compression to secure the second oil needle 206 and the second oil pipe 70.

[0085] For other structures not described, refer to Example 1 or 2.

[0086] In summary, the oil pipe quick-connect structure provided in the embodiment of the present invention can be used to connect two oil pipes to extend the length of the oil pipe in the hydraulic disc brake system, and then make up for the insufficient length of the oil pipe. On the one hand, it is suitable for emergencies during vehicle installation, and on the other hand, it is also suitable for making up the length of the oil pipe when the length is insufficient during user modification.

[0087] Example 4

[0088] The difference between this embodiment and embodiment 1 is that embodiment 4 of the present invention provides a quick-connect oil pipe structure. The adapter 20 is integrally formed on the oil brake upper pump / brake lower pump and is connected to the oil circuit of the oil brake upper pump / brake lower pump. After rotating the quick-connect, it can be connected to the oil brake upper pump / brake lower pump.

[0089] For other structures not described, refer to Example 1 or 2.

[0090] In summary, the oil pipe quick-connect structure provided in the embodiment of the present invention directly sets the structure of the adapter 20 on the oil brake upper pump and / or the brake lower pump, which can be directly used for the assembly of connecting parts and is easier to use as a complete set of hydraulic disc brake systems, increasing the convenience of installation and the simplicity of user operation.

[0091] Example 5

[0092] Example 5 of the present application provides a hydraulic disc brake system, which includes the oil pipe quick-connect structure of the above-mentioned Example 1 or Example 2, and Example 3 or Example 4.

[0093] Example 6

[0094] Embodiment 6 of the present application provides a bicycle, which includes the oil pipe quick-connect structure of embodiment 1 or embodiment 2, and embodiment 3 or embodiment 4, or,

[0095] The hydraulic disc brake system of the fifth embodiment.

[0096] In summary, the oil pipe quick-connect structure, hydraulic disc brake system and bicycle provided by the embodiments of the present invention, through the rotational quick connection of the connecting member 10 and the adapter 20, cooperate with the setting of the clamping point portion 105 and the bayonet portion 205. After the rotational quick connection, the clamping point portion 105 is axially positioned by the step formed at the junction of the first accommodating chamber 202 and the second accommodating chamber 203. At the same time, the anti-slip component can realize the axial and circumferential quick connection positioning of the connecting member 10 and the adapter 20. The auxiliary fixation of the oil pipe can be completed without tools or with only simple cooperation of tools and will not fall off, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system. On the one hand, it is suitable for supplementing the length of the oil pipe in the hydraulic disc brake system when the length is insufficient. On the other hand, it can also be matched with the overall structure of the oil brake upper pump and / or brake lower pump with the adapter 20 structure to be used as a complete set of hydraulic disc brake systems, thereby increasing the convenience of loading and the simplicity of user operation.

[0097] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0098] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A quick-connect structure for an oil pipe, characterized in that: The invention comprises a first oil pipe having an internal passage, a connecting piece, an adapter, and an anti-dropping piece for circumferentially positioning the connecting piece and the adapter. The connecting piece and the adapter both have oil passages extending therethrough. The first end of the connecting piece is fixed to the free end of the first oil pipe, and the second end thereof is rotatably connected to the adapter to communicate with the oil passage of the first oil pipe. The connecting member at least includes a first plug-in portion, a first oil needle portion provided at a first end of the first plug-in portion, and at least one clamping point portion arranged on a side wall of the first plug-in portion; The adapter includes at least a main body portion with an internal penetration, a first accommodating cavity and a second accommodating cavity opened at the first end of the main body portion and extending into the inner cavity in sequence, and a bayonet portion opened at the side wall of the first accommodating cavity and connected to the second accommodating cavity to accommodate the clamping point portion passing through and entering the second accommodating cavity; wherein, the inner diameter of the first accommodating cavity is smaller than the inner diameter of the second accommodating cavity, and the outer diameter of the edge of the clamping point portion is smaller than the inner diameter of the second accommodating cavity and larger than the inner diameter of the first accommodating cavity.

2. The oil pipe quick-connect structure according to claim 1, characterized in that: The free end of the first oil pipe is equipped with an oil pipe sleeve for external compression to fix the first oil needle portion and the first oil pipe.

3. The oil pipe quick-connect structure according to claim 1, characterized in that: A ring edge portion is provided between the first plug-in portion and the first oil needle portion.

4. The oil pipe quick-connect structure according to claim 1, characterized in that: A third accommodating cavity with a decreasing inner diameter is formed on a side of the second accommodating cavity away from the first accommodating cavity; A second plug-in portion with a decreasing outer diameter is provided at the second end of the first plug-in portion, and an annular groove is provided on the outer side wall of the second plug-in portion, and a sealing ring is sleeved on the annular groove.

5. The oil pipe quick-connect structure according to claim 4, characterized in that: The anti-dropping member includes: an extension portion integrally formed at an end of the second plug-in portion facing away from the first plug-in portion; a positioning spring, a first end of which is sleeved on the extension portion, and the other end of which abuts against the inner wall of the third accommodating cavity after the first plug-in portion is installed in the second accommodating cavity to provide an axial positioning force; and at least one auxiliary clamping point portion arranged on the side wall of the first plug-in portion, the auxiliary clamping point portion being arranged with the same width as the clamping point portion and being staggered in the circumferential direction of the first plug-in portion, the auxiliary clamping point portion being longer than the clamping point portion and shorter than the height of the second accommodating cavity, and the end thereof close to the first plug-in portion being flush with the first end of the clamping point portion; Wherein, a side wall surface of the first accommodating cavity is provided with a secondary clamping portion connected to the second accommodating cavity to accommodate the secondary clamping point portion passing through and entering the second accommodating cavity.

6. The oil pipe quick-connect structure according to claim 1, characterized in that: The anti-dropping member includes: an anti-slip groove, which is provided on the annular side wall of the first plug-in portion; An anti-slip hole is provided on the side wall of the main body at a position corresponding to the position of the anti-slip groove after the anti-slip groove is rotated and quickly connected; The locking bolt is threadedly assembled in the anti-dropout hole, and the inner end of the locking bolt extends into the anti-dropout groove for positioning fit.

7. The oil pipe quick-connect structure according to claim 1, characterized in that: A second oil needle portion is integrally formed on the second end of the adapter, and the second oil needle portion is plugged and fixed inside the second oil pipe to connect the oil paths of the first oil pipe and the second oil pipe after rotating the quick connector.

8. The oil pipe quick-connect structure according to claim 1, characterized in that: The adapter is integrally formed on the oil brake upper pump / brake lower pump and is connected to the oil path of the oil brake upper pump / brake lower pump, so as to be connected to the oil brake upper pump / brake lower pump after rotating the quick connect.

9. A hydraulic disc brake system, characterized in that: The hydraulic disc brake system includes the oil pipe quick connection structure according to any one of claims 1 to 8.

10. A bicycle, characterized in that: The bicycle comprises the oil pipe quick-connect structure according to any one of claims 1 to 8, or The hydraulic disc brake system according to claim 9.

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