Self-unsealing hydraulic tubing quick-connect structure, self-unsealing hydraulic tubing, and hydraulic disc brake system

Abstract

A self-unsealing hydraulic tubing quick-connect structure, self-unsealing hydraulic tubing, and a hydraulic disc brake system. The self-unsealing hydraulic tubing quick-connect structure comprises a connector (10) and an adapter (20); the connector (10) and the adapter (20) are each provided with an oil passage extending therethrough; one end of the connector (10) engages with the adapter (20) to define a continuous oil passage; the connector (10) is provided with at least a first receiving cavity (104) extending axially therethrough; the first receiving cavity (104) has fitted therein a first oil seal member (30) that elastically seals said cavity (104); the adapter (20) comprises at least a second receiving cavity (201) extending axially therethrough; the second receiving cavity (201) has fitted therein a second oil seal member (40) that elastically seals said cavity (201); when the connector (10) and the adapter (20) are fitted together, both the first oil seal member (30) and the second oil seal member (40) elastically retract so as to bring the first receiving cavity (104) and the second receiving cavity (201) into fluid communication with each other. The described technical solution facilitates the interconnection and fixing together of hydraulic tubing, prevents air from entering into the oil passage, prevents oil from leaking out of said passage, and allows for rapid interconnection of hydraulic tubing within a hydraulic disc brake system.

Description

A self-opening quick-connect hydraulic hose structure, a self-opening hydraulic hose, and a hydraulic disc brake system. Technical Field

[0001] This utility model relates to the field of hydraulic disc brake technology, specifically to a self-opening quick-connect structure for hydraulic hoses, a self-opening hydraulic hose, and a hydraulic disc brake system. Background Technology

[0002] When installing a braking system on an internally cabled bicycle, the high-pressure brake 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.

[0003] However, the aforementioned quick-connect sealing method for hydraulic hoses requires a wrench to apply a set torque; insufficient torque poses a risk of oil leakage and is time-consuming and labor-intensive. Currently, some hydraulic hose connectors and quick-connect hydraulic brake upper / lower cylinder couplings are available on the market, but these products require opening the hydraulic circuit seal before quick-connection, which may allow air to enter the hydraulic circuit and affect braking performance. Therefore, we propose a self-opening quick-connect hydraulic hose structure, a self-opening hydraulic hose, and a hydraulic disc brake system. Utility Model Content

[0004] This application provides a self-opening quick-connect hydraulic hose structure, a self-opening hydraulic hose, and a hydraulic disc brake system to at least solve the problem in the prior art where hydraulic hose connectors and hydraulic brake upper / lower pumps require opening the hydraulic circuit seal before quick-connection during assembly, which may cause air to enter the hydraulic circuit and affect braking performance.

[0005] [Correction based on Rule 91 16.04.2026] In a first aspect, embodiments of this application provide a self-opening quick-connect structure for an oil pipe, including a connector and an adapter, both of which have an internal oil passage, and the first end of the connector is engaged with the adapter to limit the oil passage.

[0006] The connector includes at least a first assembly cavity that axially extends through the connector, and a first oil seal that elastically closes the first assembly cavity is assembled in the first assembly cavity.

[0007] The adapter includes at least a second assembly cavity that axially extends through the adapter, and the second assembly cavity is fitted with a second oil seal that elastically closes the second assembly cavity;

[0008] When the connector is assembled with the adapter, both the first oil seal and the second oil seal elastically retract to connect the first assembly cavity and the second assembly cavity.

[0009] Optionally, the first oil seal includes:

[0010] The first sealing part is movably assembled in the first assembly cavity, and a plurality of first oil grooves are provided on its annular sidewall.

[0011] [Correction 16.04.2026 according to Rule 91] A first top head is disposed at the first end of the first sealing portion;

[0012] [Correction 16.04.2026 according to Rule 91] The first annular step is integrally formed in the inner cavity of the first assembly cavity;

[0013] [Correction 16.04.2026 according to Rule 91] A first elastic member is limited and fitted to the second end of the first sealing portion, and its other end abuts against the oil needle member to elastically push the first sealing portion to contact the first annular step and close the first assembly cavity.

[0014] Optionally, the second oil seal includes:

[0015] The second sealing part is movably assembled in the first assembly cavity, and a third sealing part and a fourth sealing part are sequentially provided at one end near the first sealing part. The fourth sealing part has a plurality of second oil grooves on its annular sidewall, and the second sealing part has a plurality of third oil grooves on its annular sidewall.

[0016] The second top head is disposed at the first end of the fourth sealing part;

[0017] The second annular step is integrally formed in the inner cavity of the second assembly cavity;

[0018] The second elastic member is limited and fitted to the second end of the second sealing part, and its other end abuts against the oil needle member, so as to elastically push the third sealing part to contact the second annular step and close the first assembly cavity.

[0019] When the connector and the adapter are assembled, the second top head contacts the first top head and elastically pushes against the first seal and the second seal, and the oil passages of the first oil groove, the second oil groove and the third oil groove are connected for quick assembly.

[0020] Optionally, the connector further includes a first insertion portion and a main body portion arranged along the axial direction of the connector, and a locking point portion arranged on the side wall of the first insertion portion;

[0021] The second assembly cavity includes a first accommodating cavity, a second accommodating cavity, and a third accommodating cavity arranged sequentially and communicating with each other, wherein the inner diameter of the third accommodating cavity is less than the inner diameter of the first accommodating cavity and less than the inner diameter of the second accommodating cavity, and a snap-fit ​​portion communicating with the second accommodating cavity is provided on the side wall of the first accommodating cavity.

[0022] Wherein, the outer diameter of the edge of the locking point is smaller than the inner diameter of the second accommodating cavity and larger than the inner diameter of the first accommodating cavity, and the locking point passes through the locking opening and is rotated and positioned within the second accommodating cavity.

[0023] Optionally, the connector further includes:

[0024] The second insertion part is disposed at the second end of the first insertion part and its outer diameter is smaller than that of the first insertion part. A first sealing ring is radially fitted on the outer side wall of the second insertion part, and the first sealing ring abuts and seals against the inner wall of the third accommodating cavity.

[0025] Optionally, the checkpoint includes:

[0026] The main locking point, having at least one, is disposed on the annular sidewall of the first insertion part near the second insertion part;

[0027] At least one secondary locking point is provided on the annular sidewall of the first insertion part near the second insertion part and is offset from the main locking point in the circumferential direction. The secondary locking point is the same width as the main locking point and its length is greater than the length of the main locking point and less than the height of the second accommodating cavity.

[0028] Optionally, the bayonet portion includes:

[0029] The main bayonet portion is formed on the side wall of the first receiving cavity and communicates with the second receiving cavity, and its number is matched with the number of the main bayonet points.

[0030] The secondary bayonet portion is located on the side wall of the first accommodating cavity and connects to the second accommodating cavity, and its number is matched with the number of the secondary bayonet portions.

[0031] Optionally, the distal end of the connector and / or the adapter is fitted with an oil needle, the oil needle comprising:

[0032] The platform has two sections, which are respectively inserted into the far ends of the first assembly cavity and the second assembly cavity, and their first ends respectively contact the first elastic member and the second elastic member.

[0033] The second sealing ring, which is two in number, is radially sleeved on the outer side wall of the platform, and the second sealing ring abuts and seals against the inner walls of the first assembly cavity and the second assembly cavity respectively.

[0034] An oil needle section is provided at the second end of the platform for assembling an oil pipe;

[0035] A screw assembly is sleeved and fitted onto the oil needle portion, and threadedly fitted to the far end of the first assembly cavity and the second assembly cavity to limit the assembly of the platform portion.

[0036] Secondly, embodiments of this application provide a self-opening oil pipe, the free end of which has the self-opening oil pipe quick-connect structure described in the first aspect.

[0037] Thirdly, embodiments of this application provide a hydraulic disc brake system, which includes the self-opening quick-connect hydraulic hose structure of the first aspect above, or the self-opening hydraulic hose of the second aspect above.

[0038] Compared to related technologies, the self-opening quick-connect hydraulic hose structure, self-opening hydraulic hose, and hydraulic disc brake system provided in this application embodiment have at least the following technical advantages:

[0039] [Correction based on Rule 91, April 16, 2026] Through the quick-connect rotation of the connector and adapter, and the cooperation of the first and second oil seals, the internal oil passages of the connector and adapter in the unassembled state are sealed, preventing oil leakage. During assembly, the quick-connect rotation of the connector and adapter enables quick connection. After quick connection, the first and second oil seals come into contact and push against each other, causing the first seal to leave the first annular step and the third seal to leave the second annular step. In this state, the oil passage in the first assembly cavity reaches the third accommodating cavity via the first oil groove and the first annular step, and then connects via the second oil groove, the second annular step, and the third oil groove to form a continuous oil passage. No air will enter the oil passage and there will be no oil leakage. No tools are required for installation, and the oil pipe joint can be conveniently positioned and quickly connected without easily falling off, greatly facilitating the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0040] 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

[0041] 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.

[0042] Figure 1 is a perspective view of a self-opening quick-connect structure for oil pipes according to an exemplary embodiment.

[0043] Figure 2 is an exploded view of a self-opening quick-connect tubing structure according to an exemplary embodiment.

[0044] Figure 3 is an exploded view of a self-opening quick-connect structure for oil pipes according to an exemplary embodiment.

[0045] Figure 4 is a cross-sectional view of a self-opening quick-connect tubing structure according to an exemplary embodiment.

[0046] Figure 5 is a factory assembly diagram of the pump body according to an exemplary embodiment.

[0047] Figure 6 is an exploded view of the adapter plug according to an exemplary embodiment.

[0048] Explanation of reference numerals in the attached figures:

[0049] Connector 10: First insertion part 101; Second insertion part 102; Extension part 103; First assembly cavity 104; Main locking point part 1051; Secondary locking point part 1052; First sealing ring 106; First annular step 107;

[0050] Adapter 20: Second assembly cavity 201; First accommodating cavity 202; Second accommodating cavity 203; Third accommodating cavity 204; Second annular step 205; Main bayonet portion 2061; Sub-bayonet portion 2062;

[0051] First oil seal 30; First sealing part 301; First top head 302; First oil groove 303; First elastic element 304;

[0052] Second oil seal 40; Second sealing part 401; Third sealing part 402; Fourth sealing part 403; Second top head 404; Second oil groove 405; Third oil groove 406; Second elastic element 407;

[0053] Oil tubing casing 50;

[0054] Oil needle part 60; platform part 601; second sealing ring 602; oil needle part 603; screw platform part 604;

[0055] Adapter sealing part 70; sealing plug part 701; handle part 702; external thread part 703; third sealing ring 704. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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 inside of the bicycle frame and connect to the hydraulic brake 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, the hose joint installation typically requires a wrench to tighten the hose joint screws, causing deformation of the internal parts to create a seal.

[0060] However, the aforementioned quick-connect sealing method for hydraulic hoses requires a wrench to apply a set torque. Insufficient torque poses a risk of oil leakage and is time-consuming and labor-intensive. Currently, some hydraulic hose connectors and quick-connect hydraulic hose connectors for hydraulic brake upper / lower cylinders have appeared on the market. However, these products require opening the seal of the hydraulic circuit before assembly, which may allow air to enter the hydraulic circuit and affect braking performance.

[0061] Based on the above, this utility model provides a self-opening quick-connect structure for hydraulic hoses, a self-opening hydraulic hose and a hydraulic disc brake system, which will be described in detail below with reference to specific embodiments and accompanying drawings.

[0062] Example 1

[0063] [Corrected according to Rule 91, April 16, 2026] This utility model embodiment provides a self-opening quick-connect structure for oil pipes. Figure 1 is a perspective view of the self-opening quick-connect structure for oil pipes according to an exemplary embodiment. Figure 2 is an exploded view of the self-opening quick-connect structure for oil pipes according to an exemplary embodiment. Figure 3 is an exploded view of the self-opening quick-connect structure for oil pipes according to an exemplary embodiment. Figure 4 is a cross-sectional view of the self-opening quick-connect structure for oil pipes according to an exemplary embodiment. As shown in Figures 1-4, the self-opening quick-connect structure for oil pipes includes a connector 10 and an adapter 20. Both the connector 10 and the adapter 20 have an internal oil passage. The first end of the connector 10 is engaged with the adapter 20 to limit the oil passage.

[0064] The connector 10 includes at least a first assembly cavity 104 that axially extends through the connector 10, and a first oil seal 30 that elastically closes the first assembly cavity 104 is assembled within the first assembly cavity 104; in this embodiment, the first oil seal 30 includes:

[0065] The first sealing part 301 is movably assembled in the first assembly cavity 104, and a plurality of first oil grooves 303 are provided on its annular sidewall.

[0066] [Correction 16.04.2026 according to Rule 91] The second elastic member 407 is limited and assembled at the second end of the second sealing part 401, and its other end abuts against the oil needle member 60, so as to elastically push the third sealing part 402 to contact the second annular step 205 and close the first assembly cavity 104; In this embodiment, the first elastic member 304 and the second elastic member 407 are both compression springs.

[0067] The first annular step 107 is integrally formed in the inner cavity of the first assembly cavity 104;

[0068] The first elastic member 304 is limited and assembled at the second end of the first sealing part 301, and its other end abuts against the oil needle member 60, so as to elastically push the first sealing part 301 to contact the first annular step 107 and close the first assembly cavity 104.

[0069] The adapter 20 includes at least a second assembly cavity 201 that axially extends through the adapter 20, and a second oil seal 40 that elastically closes the second assembly cavity 201 is fitted thereon; in this embodiment, the second oil seal 40 includes:

[0070] The second sealing part 401 is movably assembled in the first assembly cavity 104, and a third sealing part 402 and a fourth sealing part 403 are sequentially provided at one end near the first sealing part 301. The fourth sealing part 403 has a plurality of second oil grooves 405 on its annular sidewall, and the second sealing part 401 has a plurality of third oil grooves 406 on its annular sidewall.

[0071] The second top head 404 is disposed at the first end of the fourth sealing part 403;

[0072] The second annular step 205 is integrally formed in the inner cavity of the second assembly cavity 201;

[0073] The second elastic member 407 is limited and assembled at the second end of the second sealing part 401, and its other end abuts against the oil needle member 60, so as to elastically push the third sealing part 402 to contact the second annular step 205 and close the first assembly cavity 104; in this embodiment, the first elastic member 304 and the second elastic member 407 are both compression springs.

[0074] When the connector 10 and the adapter 20 are assembled, the second top head 404 contacts the first top head 302 and elastically pushes against the first sealing part 301 and the second sealing part 401, which then retract in the opposite direction simultaneously. The oil passages of the first oil groove 303, the second oil groove 405 and the third oil groove 406 are connected for quick assembly. Both the connector 10 and the adapter 20 are equipped with oil needles 60 at their far ends. In this embodiment, the oil needles 60 connect the connector 10 and the adapter 20, providing elastic fixed support for the first oil seal 30 and the second oil seal 40. They also connect the two oil pipes to ensure the connection of the oil pipes.

[0075] In the above embodiment, under normal conditions, the first oil seal 30 closes the first assembly cavity 104 of the connector 10. Specifically, the first elastic member 304 elastically pushes the first sealing part 301 to contact the first annular step 107 and closes the first assembly cavity 104; the second oil seal 40 closes the second assembly cavity 201 of the adapter 20. Specifically, the second elastic member 407 elastically pushes the third sealing part 402 to contact the second annular step 205 and closes the first assembly cavity 104.

[0076] When the quick connection is made, after the connector 10 and the adapter 20 are inserted and fixed, the second top head 404 contacts the first top head 302 and pushes against each other, causing the first sealing part 301 to leave the first annular step 107 and the third sealing part 402 to leave the second annular step 205. In this state, the oil passage in the first assembly cavity 104 reaches the third accommodating cavity 204 through the first oil groove 303-first annular step 107, and then connects through the second oil groove 405-second annular step 205-third oil groove 406 to form a through oil passage.

[0077] In this embodiment, referring to Figures 1-4, the connector 10 further includes a first insertion portion 101 and a main body portion 103 arranged along the axial direction of the connector 10, as well as a locking point portion arranged on the side wall of the first insertion portion 101.

[0078] The second assembly cavity 201 includes a first accommodating cavity 202, a second accommodating cavity 203 and a third accommodating cavity 204 arranged sequentially and communicating with each other, and the inner diameter of the third accommodating cavity 204 is less than the inner diameter of the first accommodating cavity 202 and less than the inner diameter of the second accommodating cavity 203. The side wall of the first accommodating cavity 202 is provided with a latch portion that communicates with the second accommodating cavity 203.

[0079] The outer diameter of the locking point is smaller than the inner diameter of the second accommodating cavity 203 and larger than the inner diameter of the first accommodating cavity 203. The locking point passes through the locking part and rotates and positions itself within the second accommodating cavity 203.

[0080] Furthermore, in this embodiment, the locking point portion includes: a main locking point portion 1051, at least one of which is disposed on the annular sidewall of the first insertion portion 101 near the second insertion portion 102; and a secondary locking point portion 1052, at least one of which is disposed on the annular sidewall of the first insertion portion 101 near the second insertion portion 102 and is offset from the main locking point portion 1051 in the circumferential direction. The secondary locking point portion 1052 is the same width as the main locking point portion 1051, and its length is greater than the length of the main locking point portion 1051 and less than the height of the second accommodating cavity 203.

[0081] The bayonet section includes: a main bayonet section 2061, which is opened on the side wall of the first receiving cavity 202 and connected to the second receiving cavity 203, and its number is matched with the number of main bayonet points 1051; and a secondary bayonet section 2062, which is opened on the side wall of the first receiving cavity 202 and connected to the second receiving cavity 203, and its number is matched with the number of secondary bayonet points 1052.

[0082] In the above embodiment, under normal conditions, the first oil seal 30 closes the first assembly cavity 104 of the connector 10. Specifically, the first elastic member 304 elastically pushes the first sealing part 301 to contact the first annular step 107 and closes the first assembly cavity 104; the second oil seal 40 closes the second assembly cavity 201 of the adapter 20. Specifically, the second elastic member 407 elastically pushes the third sealing part 402 to contact the second annular step 205 and closes the first assembly cavity 104.

[0083] [Correction 16.04.2026 according to Rule 91] When quick-connect, align the connector 10 with the adapter 20, and align the main locking point 1051 with the main locking port 2061 and the secondary locking point 1052 with the secondary locking port 2062 before inserting; rotate the main body 103 clockwise / counterclockwise until the secondary locking point 1052 corresponds exactly to one of the main locking ports 2061, release the pressure, and the secondary locking point 1052 will axially retract into one of the main locking ports 2061 under the elastic force of the second oil seal 40 and engage, while the main locking point 1051 is axially positioned at the step formed at the junction of the first accommodating cavity 202 and the second accommodating cavity 203;

[0084] [Correction 16.04.2026 according to Rule 91] At this time, the second top head 404 contacts the first top head 302 and pushes against each other, causing the first sealing part 301 to leave the first annular step 107 and the third sealing part 402 to leave the second annular step 205. In this state, the oil passage in the first assembly cavity 104 reaches the third accommodating cavity 204 through the first oil groove 303-first annular step 107, and then connects through the second oil groove 405-second annular step 205-third oil groove 406 to form a through oil passage; and in this state, the axial and circumferential directions of the connector 10 and the adapter 20 are both completed with quick-connect positioning, which does not require tool assistance for fixation and will not fall off, which facilitates the installation of the oil pipe in the hydraulic disc brake system.

[0085] [Correction based on Rule 91, April 16, 2026] Continuing to refer to Figure 2, connector 10 also includes:

[0086] [Correction 16.04.2026 according to Rule 91] The second insertion part 102 is disposed at the second end of the first insertion part 101 and its outer diameter is smaller than that of the first insertion part 101. A first sealing ring 106 is radially mounted on the outer side wall of the second insertion part 102. The first sealing ring 106 abuts and seals against the inner wall of the third accommodating cavity 204. The first sealing ring 106 forms a sealed insulation between the inner cavity of the third accommodating cavity 204, the sealing ring 106, and the outer wall of the second insertion part 102, effectively maintaining the smooth flow of oil and preventing oil leakage.

[0087] [Correction based on Rule 91, April 16, 2026] Further, referring to Figures 1-2, the adapter 20 is also provided with:

[0088] [Correction 16.04.2026 according to Rule 91] The locking bolt is threaded into the threaded opening 207 on the outer wall of the main body 201, and its tail extends into the second receiving cavity 203 to limit the rotation angle of the locking point.

[0089] [Correction 16.04.2026 based on Rule 91] In this embodiment, the oil needle component 60 includes:

[0090] [Correction 16.04.2026 according to Rule 91] There are two platform parts 601, which are respectively inserted and assembled into the far ends of the first assembly cavity 104 and the second assembly cavity 201, and their first ends respectively abut against the first elastic member 304 and the second elastic member 407.

[0091] [Correction 16.04.2026 according to Rule 91] The second sealing ring 602, there are two of them, which are radially sleeved on the outer side wall of the platform 601, and the second sealing ring 602 abuts and seals against the inner wall of the first assembly cavity 104 and the second assembly cavity 201 respectively.

[0092] [Correction based on Rule 91 16.04.2026] Oil needle part 603 is provided at the second end of the platform part 601 for mounting oil pipe; in this embodiment, an oil pipe sleeve 50 for external clamping to fix the oil needle part 603 and the oil pipe end is also mounted on the free end of the oil pipe.

[0093] [Correction 16.04.2026 according to Rule 91] Screw assembly 604, which is sleeved and assembled on oil needle part 603, and is threadedly assembled with the remote end of the first assembly cavity 104 and the second assembly cavity 201 to limit the assembly platform part 601.

[0094] [Corrected according to Rule 91 16.04.2026] In the technical solution of the above embodiment, during assembly, the first oil seal 30 and the oil needle 60 are sequentially installed into the first assembly cavity 104 of the connector 10, and then the screw plate 604 is threaded in. The first elastic member 304 elastically pushes the first sealing part 301 to contact the first annular step 107 and closes the first assembly cavity 104, and the first part is assembled.

[0095] [Corrected according to Rule 91 16.04.2026] The second oil seal 40 and the oil needle 60 are then installed into the second assembly cavity 201 of the adapter 20, and the screw plate 604 is then threaded in. The second elastic member 407 elastically pushes the third sealing part 402 to contact the second annular step 205 and closes the first assembly cavity 104, thus completing the second part of the assembly.

[0096] [Correction 16.04.2026 according to Rule 91] In another alternative embodiment, (not shown in the figure) the adapter 20 may not be provided with the oil needle 60. The adapter 20 may be assembled on the upper pump / lower pump of the hydraulic brake with the adapter fitting structure and communicate with the oil circuit of the upper pump / lower pump of the hydraulic brake. The second elastic member 407 contacts the upper pump / lower pump of the hydraulic brake to achieve elastic support.

[0097] [Correction based on Rule 91, April 16, 2026] Therefore, the self-opening quick-connect hydraulic hose structure proposed in this application is suitable for length supplementation when the hydraulic hose length is insufficient in the hydraulic disc brake system. On the other hand, it can also be matched with the overall structure of the hydraulic brake upper pump and / or brake lower pump with a conversion matching structure. This realizes that after the adapter 20 is assembled with the connection end of the hydraulic brake upper pump / brake lower pump, and can be matched with the freely rotating adapter 20, combined with the setting of the main locking part 1051 and the secondary locking part 1052 on the connector 10, the connector 10 can be conveniently rotated after being inserted into the inner cavity of the adapter 20, without having to rotate the hydraulic hose and connector 10 which are difficult to rotate after passing through, thus increasing the convenience of vehicle installation and the simplicity of user operation.

[0098] In summary, the self-opening quick-connect hydraulic pipe structure and hydraulic disc brake system provided by this utility model embodiment, through the quick-connect rotation of the connector 10 and adapter 20 and the cooperation of the first oil seal 30 and the second oil seal 40, ensure that the internal oil passages of the connector 10 and adapter 20 are sealed in the unassembled state, preventing oil leakage. During assembly, the quick-connect rotation of the connector 10 and adapter 20 achieves the quick-connection. After the quick-connection, the first oil seal 30 and the second oil seal 40 come into contact and push against each other, causing the first sealing part 301 to move away from the first annular platform. Step 107, the third sealing part 402 leaves the second annular step 205. In this state, the oil passage in the first assembly cavity 104 reaches the third accommodating cavity 204 through the first oil groove 303-first annular step 107, and then connects through the second oil groove 405-second annular step 205-third oil groove 406 to form a through oil passage. No air will enter the oil passage and there will be no oil leakage. No tools are needed for installation. The oil pipe joint can be conveniently positioned and quickly connected without easily falling off, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0099] Example 2

[0100] The difference between this embodiment and embodiment 1 is that embodiment 2 of this utility model provides a self-opening quick-connect oil pipe structure. Figure 5 is a factory assembly diagram of the pump body according to an exemplary embodiment. Figure 6 is an exploded view of the adapter plug according to an exemplary embodiment. The self-opening quick-connect oil pipe structure also includes an adapter plug 70, which has a plug insertion part 701 and a handle part 702. A third sealing ring 704 is radially provided on the plug insertion part 701. The plug insertion part 701 is inserted into the second assembly cavity 201 and reaches the third receiving cavity 204. The third sealing ring 704 seals the gap between the third receiving cavity 204 and the plug insertion part 701, thus sealing the oil passage.

[0101] Furthermore, in this embodiment, the sealing plug part 701 is also provided with an external thread part 703, and the inner wall of the first accommodating cavity 202 is provided with an internal thread that matches the external thread part 703. When assembled at the factory, the external thread part 703 and the internal thread cooperate with each other to fix the adapter sealing part 70 on the adapter part 20, thereby effectively preventing dust or debris from entering and affecting the assembly effect.

[0102] Other undescribed structures are described in Example 1.

[0103] Example 3

[0104] Embodiment 3 of this application provides a self-opening oil pipe, the free end of which has the self-opening oil pipe quick-connect structure described in the first aspect above.

[0105] Other undescribed structures refer to Example 1 or 2.

[0106] Example 4

[0107] Embodiment 4 of this application provides a hydraulic disc brake system, which includes the self-opening quick-connect hydraulic hose structure of Embodiments 1-2 above, or the self-opening hydraulic hose of Embodiment 3 above.

[0108] In summary, the self-opening quick-connect structure for the hydraulic hose, the self-opening hydraulic hose, and the hydraulic disc brake system provided by this utility model embodiment, through the quick-connect rotation of the connector 10 and the adapter 20, and the cooperation of the first oil seal 30 and the second oil seal 40, ensures that the internal oil passages of the connector 10 and the adapter 20 are sealed in the unassembled state, preventing oil leakage. During assembly, the quick-connect rotation of the connector 10 and the adapter 20 achieves the quick-connection. After the quick-connection, the first oil seal 30 and the second oil seal 40 come into contact and push against each other, causing the first sealing part 301 to move away from the second oil seal 40. With an annular step 107, the third seal 402 leaves the second annular step 205. In this state, the oil passage in the first assembly cavity 104 reaches the third accommodating cavity 204 via the first oil groove 303-first annular step 107, and then connects via the second oil groove 405-second annular step 205-third oil groove 406 to form a continuous oil passage. No air will enter the oil passage and there will be no oil leakage. No tools are needed for installation. The oil pipe joint can be quickly connected after positioning and will not easily fall off, which greatly facilitates the rapid assembly of the oil pipe in the hydraulic disc brake system.

[0109] 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.

[0110] The embodiments described above are merely illustrative of several implementation methods of this application, and 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 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. [Corrected according to Rule 91, April 16, 2026] A self-opening quick-connect structure for oil pipes includes a connector and an adapter, both of which have internal oil passages, characterized in that... The first end of the connector is engaged and limited by the adapter to allow the oil passage to be opened; The connector includes at least a first assembly cavity that axially extends through the connector, and a first oil seal that elastically closes the first assembly cavity is assembled in the first assembly cavity. The adapter includes at least a second assembly cavity that axially extends through the adapter, and the second assembly cavity is fitted with a second oil seal that elastically closes the second assembly cavity; When the connector is assembled with the adapter, both the first oil seal and the second oil seal elastically retract to connect the first assembly cavity and the second assembly cavity.

2. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 1 is characterized in that, The first oil seal includes: The first sealing part is movably assembled in the first assembly cavity, and a plurality of first oil grooves are provided on its annular sidewall. The first top head is disposed at the first end of the first sealing part; The first annular step is integrally formed in the inner cavity of the first assembly cavity; The first elastic member is positioned and fitted at the second end of the first sealing portion, and its other end abuts against the oil needle member to elastically push the first sealing portion against the first annular step and close the first assembly cavity.

3. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 2 is characterized in that, The second oil seal includes: The second sealing part is movably assembled in the first assembly cavity, and a third sealing part and a fourth sealing part are sequentially provided at one end near the first sealing part. The fourth sealing part has a plurality of second oil grooves on its annular sidewall, and the second sealing part has a plurality of third oil grooves on its annular sidewall. The second top head is disposed at the first end of the fourth sealing part; The second annular step is integrally formed in the inner cavity of the second assembly cavity; The second elastic member is limited and fitted to the second end of the second sealing part, and its other end abuts against the oil needle member, so as to elastically push the third sealing part to contact the second annular step and close the first assembly cavity. When the connector is assembled with the adapter, the second top head contacts the first top head and elastically pushes against the first and second sealing parts and retracts in the opposite direction. The oil passages of the first oil groove, the second oil groove and the third oil groove are connected for quick assembly.

4. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 1 is characterized in that, The connector further includes a first insertion part and a main body part arranged along the axial direction of the connector, as well as a locking point part arranged on the side wall of the first insertion part; The second assembly cavity includes a first accommodating cavity, a second accommodating cavity, and a third accommodating cavity arranged sequentially and communicating with each other, wherein the inner diameter of the third accommodating cavity is less than the inner diameter of the first accommodating cavity and less than the inner diameter of the second accommodating cavity, and a snap-fit ​​portion communicating with the second accommodating cavity is provided on the side wall of the first accommodating cavity. Wherein, the outer diameter of the edge of the locking point is smaller than the inner diameter of the second accommodating cavity and larger than the inner diameter of the first accommodating cavity, and the locking point passes through the locking opening and is rotated and positioned within the second accommodating cavity.

5. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 4 is characterized in that, The connector also includes: The second insertion part is disposed at the second end of the first insertion part and its outer diameter is smaller than that of the first insertion part. A first sealing ring is radially fitted on the outer side wall of the second insertion part, and the first sealing ring abuts and seals against the inner wall of the third accommodating cavity.

6. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 5 is characterized in that, The checkpoint unit includes: The main locking point, having at least one, is disposed on the annular sidewall of the first insertion part near the second insertion part; At least one secondary locking point is provided on the annular sidewall of the first insertion part near the second insertion part and is offset from the main locking point in the circumferential direction. The secondary locking point is the same width as the main locking point and its length is greater than the length of the main locking point and less than the height of the second accommodating cavity.

7. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 6 is characterized in that, The bayonet portion includes: The main bayonet portion is formed on the side wall of the first receiving cavity and communicates with the second receiving cavity, and its number is matched with the number of the main bayonet points. The secondary bayonet portion is located on the side wall of the first accommodating cavity and connects to the second accommodating cavity, and its number is matched with the number of the secondary bayonet portions.

8. [Correction 16.04.2026 according to Rule 91] The self-opening quick-connect structure for oil pipes as described in claim 1 is characterized in that, The distal end of the connector and / or the adapter is fitted with an oil needle, the oil needle comprising: The platform has two sections, which are respectively inserted into the far ends of the first assembly cavity and the second assembly cavity, and their first ends respectively contact the first elastic member and the second elastic member. The second sealing ring, which is two in number, is radially sleeved on the outer side wall of the platform, and the second sealing ring abuts and seals against the inner walls of the first assembly cavity and the second assembly cavity respectively. An oil needle section is provided at the second end of the platform for assembling an oil pipe; A screw-type assembly, its threads are fitted to the far ends of the first and second assembly cavities to limit the assembly of the platform portion.

9. [Corrected according to Rule 91, April 16, 2026] A self-opening oil pipe, characterized in that, The free end of the self-opening tubing has a quick-connect structure for the self-opening tubing as described in any one of claims 1-8.

10. [Corrected according to Rule 91, April 16, 2026] A hydraulic disc brake system, characterized in that, The hydraulic disc brake system includes the self-opening quick-connect hydraulic hose structure as described in any one of claims 1-8, or the self-opening quick-connect hydraulic hose structure as described in claim 9.

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