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

Abstract

The invention 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 inner diameter of the first containing cavity is smaller than that of the second containing cavity, and the outer diameter of the edge of the clamping point part is smaller than the inner diameter of the second containing cavity and larger than the inner diameter of the first containing 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 invention 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] The hydraulic bicycle brake system mainly consists of the oil brake upper pump on the bicycle, the brake lower pump installed next to the tire, and the hydraulic oil pipe used to connect the two. The brake lower pump will have a brake caliper used in conjunction with the brake disc installed on the front / rear wheel. When installing the brake system on an internal wiring bicycle, the high-pressure oil pipe connected to the oil brake upper pump / brake lower pump needs to pass through the inside of the bicycle frame and connect to the oil brake upper pump / brake lower pump at the other end.

[0003] Since 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 inserted into 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 to 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 an oil pipe quick-connect structure, a hydraulic disc brake system, and a bicycle. Summary of the invention

[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 tighten the oil pipe joint screws to deform the internal parts to form a seal, which poses a risk of oil leakage and is 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 through hole, a connecting piece, a transition piece, and an anti-dropping piece for positioning the connecting piece and the transition piece in a circumferential direction, wherein the connecting piece and the transition piece both have oil passages passing through them, a first end of the connecting piece is fixed to a free end of the first oil pipe, and a second end thereof is rotatably quick-connected with the transition piece to connect 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 arranged 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 at least includes a main body portion that is internally through, a first accommodating cavity and a second accommodating cavity that are opened at the first end of the main body portion and extend into the inner cavity in sequence, and a bayonet portion that is 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 disposed at the second end of the first plug-in portion, and an annular groove is formed 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, which is integrally formed at an end of the second plug-in portion 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 to provide an axial positioning force after the first plug-in portion is inserted into the second accommodating cavity;

[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 length of which is greater than the length of the clamping point portion and less than the height of the second accommodating cavity, and the end thereof close to the first plug-in portion is 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 is provided on the annular side wall of the first plug-in portion;

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

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

[0021] Optionally, a second oil needle portion is integrally formed at 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 with the related art, 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 coordination with the setting of the clamping point portion and the bayonet portion, after the rotational quick connection, the step formed at the junction of the clamping point portion and the first accommodating chamber and the second accommodating chamber is axially positioned, and at the same time, in coordination with the anti-slip component, 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 coordination of tools, and it will not fall off. 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 the brake lower pump with the adapter 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.

[0028] 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 present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying 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 an exploded schematic diagram 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 explosion diagram 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 It is a schematic diagram of the first assembly step of the oil pipe quick-connect structure 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] Fig. 9 It is a schematic diagram of the third assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

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

[0040] Fig.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] Fig.12 It is a cross-sectional view of the third assembly step of the oil pipe quick-connect structure according to an exemplary embodiment.

[0042] Fig.13 It is a schematic diagram of the first assembly step of the oil pipe quick-connect structure according to another exemplary embodiment.

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

[0044] Fig.15 It is a 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 casing 40 ; the positioning spring 50 ; the locking bolt 601 , the anti-dropping hole 602 , the anti-dropping groove 603 ; and the second oil pipe 70 . DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the related art, when installing the brake system on an internally routed bicycle, the high-pressure oil pipe connected to the oil brake upper pump / brake lower pump needs to pass through the inside of the bicycle frame and connect to the oil brake upper pump / brake lower pump at the other end. Since 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 to 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, an embodiment of the present invention provides an oil pipe quick-connect structure, a hydraulic disc brake system and a bicycle, which are described in detail below in conjunction with specific embodiments and drawings.

[0054] Example 1

[0055] An embodiment of the present invention 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 an exploded schematic diagram of an oil pipe quick-connect structure according to an exemplary embodiment. Figure 3 FIG. 1 is an exploded cross-sectional view of a quick-connect structure of an oil pipe 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 piece 10, an adapter 20, and an anti-slip piece for positioning the connecting piece 10 and the adapter 20 in a circumferential position. The connecting piece 10 and the adapter 20 both have oil circuits running through them. The first end of the connecting piece 10 is fixed to the free end of the first oil pipe 30, and the second end thereof is rotatably quick-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 at least includes a first plug-in portion 101, a first oil needle portion 104 disposed at a first end of the first plug-in portion 101, and at least one clamping point portion 105 disposed on a side wall of the first plug-in portion 101;

[0057] The adapter 20 at least includes a main body 201 that is internally through, a first accommodating cavity 202 and a second accommodating cavity 203 that are opened at the first end of the main body 201 and extend into the inner cavity in sequence, and a bayonet portion 205 that is opened on 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] See attached Figure 1-3 In this embodiment, the outer diameters of the connector 10 and the adapter 20 are smaller than those of the conventional 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 an 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 an 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, its length is greater than the length of the clamping point portion 105 and less than the height of the second accommodating cavity 203, and its end 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 an auxiliary clamping portion 2051 which is connected to the second accommodating cavity 203 to accommodate the auxiliary clamping point portion 1051 passing through and entering the second accommodating cavity 203 .

[0063] Figure 7 It is a schematic diagram of the first assembly step of the oil pipe quick-connect structure 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. Fig. 9 It is a schematic diagram of the third assembly step of the oil pipe quick-connect structure according to an exemplary embodiment. Fig.10 The present invention is a cross-sectional view showing the assembly steps of a quick-connect structure for an oil pipe according to an exemplary embodiment. Fig.11It is a cross-sectional view of the second assembly step of the oil pipe quick-connect structure according to an exemplary embodiment. Fig.12 It 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 solution of the above embodiment, refer to the attached Figure 7-12 , step 1, the first oil needle part 104 of the connector 10 is inserted into the free end of the first oil pipe 30 and is fixed by pressing the oil pipe sleeve 40 from the outside. It can be understood that the fixing principle of the oil pipe sleeve 40 is that after the first oil needle part 104 is pressed into the free end of the first oil pipe 30, the outside of the oil pipe sleeve 40 is pressed by a pressing machine to achieve compression deformation, thereby fixing the first oil needle part 104 and the first oil pipe 30; and the positioning spring 50 is installed on the boss positioning part 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, when the card point portion 105 and the auxiliary card point portion 1051 both enter the second accommodating chamber 203, rotate the connecting piece 10 clockwise / counterclockwise until the auxiliary card point portion 1051 rotates to one of the bayonet portions 205, release the pressure force, 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 connecting piece 10 and the adapter 20 have completed the axial and circumferential quick-connect positioning, and no tool-assisted fixing is required 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, an annular 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, which effectively maintains the oil path unobstructed and avoids 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 clamping point portion 105 and the auxiliary clamping point portion 1051. After the rotational quick connection, the auxiliary clamping point portion 1051 is clamped into the bayonet portion 205 under the elastic force of the positioning spring 50, and 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 this time, the axial and circumferential quick-connect positioning of the connecting member 10 and the adapter 20 are completed, 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 invention 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. Figure 5 It is a schematic explosion diagram 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 inner through hole, a connecting piece 10, an adapter 20, and an anti-dropping piece for positioning the connecting piece 10 and the adapter 20 in a circumferential direction. The connecting piece 10 and the adapter 20 both have oil passages passing through them. The first end of the connecting piece 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.

[0072] The connector 10 at least includes a first plug-in portion 101, a first oil needle portion 104 disposed at a first end of the first plug-in portion 101, and at least one clamping point portion 105 disposed on a side wall of the first plug-in portion 101;

[0073] The adapter 20 at least includes a main body 201 that is internally through, a first accommodating cavity 202 and a second accommodating cavity 203 that are opened at the first end of the main body 201 and extend into the inner cavity in sequence, and a bayonet portion 205 that is opened on 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.

[0074] Continue to refer to the attached Figure 4-6 The anti-dropping member includes: an anti-dropping groove 603, which is provided on the annular side wall of the first plug-in portion 101;

[0075] The anti-drop hole 602 is provided on the side wall of the main body 201 and corresponds to the position of the anti-drop groove 603 after the rotation quick connection;

[0076] The locking bolt 601 is threadedly assembled in the anti-drop hole 602, and its inner end extends into the anti-drop groove 603 for positioning and fitting; further, in the present embodiment, the locking bolt 601 is a hexagon socket screw, which can enter the anti-drop 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.

[0077] In the technical solution of the above embodiment, refer to the attached Figure 7-12 , step 1, the first oil needle part 104 of the connector 10 is inserted into the free end of the first oil pipe 30 and is fixed by pressing the oil pipe sleeve 40 from the outside. It can be understood that the fixing principle of the oil pipe sleeve 40 is that after the first oil needle part 104 is pressed into the free end of the first oil pipe 30, the outside of the oil pipe sleeve 40 is pressed by a pressing machine to achieve compression deformation, thereby fixing the first oil needle part 104 and the first oil pipe 30; and the positioning spring 50 is installed on the boss positioning part 103 of the connector 10;

[0078] Step 2: Align the connector 10 and the positioning spring 50 with the adapter 20, and align the clamping point 105 with the bayonet 205 and then plug them in. When 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 match 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.

[0079] Step three, install the locking bolt 601 into the inner thread of the anti-drop hole 602 and tighten the thread until the inner end of the locking bolt 601 extends into the anti-drop 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 without falling off, which facilitates the installation of the oil pipe in the hydraulic disc brake system.

[0080] For other structures not described, refer to Example 1.

[0081] 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 clamping 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 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 this time, the locking bolt 601 is threadedly installed in the anti-slip hole 602 to realize the axial and circumferential quick-connect positioning of the connecting member 10 and the adapter 20, the oil path is unobstructed and does not leak oil, and the auxiliary fixation of the oil pipe can be completed with simple cooperation of tools without falling off, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0082] Example 3

[0083] The difference between this embodiment and embodiment 1 is that embodiment 3 of the present invention provides an oil pipe quick-connect structure. The second end of the adapter 20 is integrally formed with a second oil needle portion 206, and the second oil needle portion 206 is plugged and fixed inside the second oil pipe 70 to connect the oil passages of the first oil pipe 30 and the second oil pipe 70 after the quick-connect rotation. It can be understood that the free end of the second oil pipe 70 is also equipped with an oil pipe sleeve 40 for external compression to fix the second oil needle portion 206 and the second oil pipe 70.

[0084] For other structures not described, refer to Example 1 or 2.

[0085] 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 installation, and on the other hand, it is also suitable for making up the length when the oil pipe is insufficient during user modification.

[0086] Example 4

[0087] The difference between this embodiment and embodiment 1 is that embodiment 4 of the present invention provides an oil pipe quick-connect structure. The adapter 20 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 to connect the oil brake upper pump / brake lower pump after rotating the quick-connect.

[0088] For other structures not described, refer to Example 1 or 2.

[0089] 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, can be directly used for the assembly of connecting parts, and is easier to be used as a complete set of hydraulic disc brake systems, thereby increasing the convenience of installation and the simplicity of user operation.

[0090] Example 5

[0091] Embodiment 5 of the present application provides a hydraulic disc brake system, which includes the oil pipe quick-connect structure of the above-mentioned embodiment 1 or embodiment 2, and embodiment 3 or embodiment 4.

[0092] Example 6

[0093] Embodiment 6 of the present application provides a bicycle, which includes the oil pipe quick-connect structure of the above-mentioned embodiment 1 or embodiment 2, and embodiment 3 or embodiment 4, or,

[0094] The hydraulic disc brake system of the fifth embodiment.

[0095] 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, and at the same time, the anti-slip component can be used to 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 only with simple cooperation of tools, and it 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 the brake lower pump with the adapter 20 structure, and used as a complete set of hydraulic disc brake systems to increase the convenience of loading and the simplicity of user operation.

[0096] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0097] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A quick-connect structure for an oil pipe, characterized in that: The invention comprises a first oil pipe having an inner through hole, a connecting piece, a transition piece, and an anti-dropping piece for positioning the connecting piece and the transition piece in a circumferential direction. The connecting piece and the transition piece both have oil passages passing through them. 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 transition piece to connect the oil passage of the first oil pipe. The connecting member at least includes a first plug-in portion, a first oil needle portion arranged 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 at least includes a main body portion that is internally through, a first accommodating cavity and a second accommodating cavity that are opened at the first end of the main body portion and extend into the inner cavity in sequence, and a bayonet portion that is 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 part 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 disposed at the second end of the first plug-in portion, and an annular groove is formed 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 comprises: An extension portion, which is integrally formed at an end of the second plug-in portion 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 to provide an axial positioning force after the first plug-in portion is inserted into the second accommodating cavity; 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 length of which is greater than the length of the clamping point portion and less than the height of the second accommodating cavity, and the end thereof close to the first plug-in portion is 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 comprises: An anti-slip groove is provided on the annular side wall of the first plug-in portion; An anti-drop hole is provided on the side wall of the main body and corresponds to the position of the anti-drop groove after the anti-drop groove is rotated and quickly connected; The locking bolt is threadedly assembled in the anti-drop hole, and the inner end of the locking bolt extends into the anti-drop groove for positioning and matching.

7. The oil pipe quick-connect structure according to claim 1, characterized in that: A second oil needle portion is integrally formed at 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 with 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 connector.

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

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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