Oil pressure calipers, oil way connecting structure of oil pressure calipers and bicycle

Abstract

The oil pressure calipers are used for being installed on a bicycle frame, the bicycle frame is provided with a first connector communicated with an oil conveying pipe used for conveying oil, the part, close to the first connector, of the oil conveying pipe is located in the bicycle frame, and the oil pressure calipers are provided with a second connector. The second connector communicates with a caliper oil way in the oil pressure caliper, and when the oil pressure caliper is fixedly connected to the vehicle frame, the second connector communicates with the first connector in a butt joint mode. The oil pressure calipers are in oil way connection with a frame in a joint butt joint mode, an oil conveying pipeline exposed outside cannot be formed at the installation position of the oil pressure calipers, and the interference problem caused by exposure of the oil conveying pipeline is solved.

Description

Technical Field

[0001] This utility model relates to the field of brake caliper technology, specifically to a hydraulic caliper, a hydraulic circuit connection structure for the hydraulic caliper, and a bicycle. Background Technology

[0002] Currently, hydraulic calipers used on bicycles are typically bolted to the front and / or rear fork tubes of the frame. The brake lines connecting to the brake levers, whether externally or internally routed, are directly connected to the hydraulic caliper's hydraulic inlet, allowing hydraulic fluid to enter the caliper's internal hydraulic circuitry. However, this connection structure creates redundant, exposed hydraulic lines at the caliper's mounting location. These lines are prone to interference with spokes or other components, leading to riding problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and provide a hydraulic caliper, a hydraulic caliper oil circuit connection structure and a bicycle. The hydraulic caliper forms an oil circuit connection with the frame through a connector docking method. No oil supply line is exposed to the outside at the installation position of the hydraulic caliper, which improves the interference problem caused by the exposure of the oil supply line.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A hydraulic caliper for mounting to a vehicle frame, wherein the vehicle frame is provided with a first connector communicating with an oil supply pipe for conveying hydraulic fluid, the portion of the oil supply pipe near the first connector being located inside the vehicle frame, the hydraulic caliper being provided with a second connector communicating with the caliper oil circuit inside the hydraulic caliper, and when the hydraulic caliper is fixed to the vehicle frame, the second connector and the first connector are connected and aligned.

[0006] Technical solution two based on technical solution one: The hydraulic caliper includes a first caliper seat and a second caliper seat fixedly connected to each other, and a braking assembly mounted on the first caliper seat and the second caliper seat and adapted to clamp the brake pads by hydraulic pressure; the first caliper seat is fixedly connected to the vehicle frame and is provided with the second connector.

[0007] Technical solution three based on technical solution two: The second clamp seat is provided with an oil injection hole, which is connected to the caliper oil passage in the second clamp seat and is sealed by a detachable sealing component.

[0008] Technical Solution 4 based on Technical Solution 3: The braking assembly includes a first piston, a second piston, a first brake pad, a second brake pad, and an elastic reset member; the first caliper seat and the second caliper seat are respectively provided with a first hydraulic chamber and a second hydraulic chamber, and the first hydraulic chamber and the second hydraulic chamber are connected through a caliper oil circuit; the first piston and the second piston are slidably mounted in the first hydraulic chamber and the second hydraulic chamber along a first direction so as to move towards each other under hydraulic pressure; the first brake pad and the second brake pad are respectively fixed to the first piston and the second piston, and a braking space for the brake pad to extend into is formed between them; the two ends of the elastic reset member act on the first brake pad and the second brake pad along the first direction to push the first piston and the second piston away from each other.

[0009] Technical solution five based on technical solution four: the second connector is connected to the first oil hole at the bottom of the first hydraulic chamber, and the oil injection hole is connected to the second oil hole at the bottom of the second hydraulic chamber; the bottom of the first hydraulic chamber is also provided with a third oil hole, and the bottom of the second hydraulic chamber is also provided with a fourth oil hole, and the third oil hole and the fourth oil hole are connected through a first channel and a second channel respectively provided on the first clamp seat and the second clamp seat and connected to each other.

[0010] Technical Solution Six based on Technical Solution Five: The first connector and the second connector are connected by a male-female plug-in method.

[0011] Technical solution seven based on technical solution six also includes a caliper sealing ring; the caliper sealing ring is located between the first connector and the second connector, and is adapted to abut against the surface of the first connector or the frame facing the hydraulic caliper to form a seal.

[0012] Technical solution eight based on technical solution seven: The second connector is surrounded by a sealing ring groove, and the caliper sealing ring is embedded and fixed in the sealing ring groove.

[0013] In addition, this utility model also provides technical solution nine: an oil circuit connection structure for a hydraulic caliper, wherein the hydraulic caliper is fixedly connected to the vehicle frame, the vehicle frame is provided with a first connector communicating with an oil supply pipe for conveying oil, and the portion of the oil supply pipe near the first connector is located inside the vehicle frame; the hydraulic caliper is provided with a second connector, the second connector communicating with the caliper oil circuit inside the hydraulic caliper, and when the hydraulic caliper is fixedly connected to the vehicle frame, the second connector and the first connector are connected.

[0014] In addition, this utility model also provides technical solution ten: a bicycle, which includes a frame, the frame having a first connector connected to an oil delivery pipe for conveying oil, the portion of the oil delivery pipe near the first connector being located inside the frame, and further including a hydraulic caliper as described in any one of technical solutions one to eight, the hydraulic caliper being fixed to the frame, and its second connector being connected to the first connector on the frame.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] Technical solution one provides a hydraulic caliper. The caliper has a second connector connected to the internal hydraulic circuit, and a first connector connected to the oil supply line and located within the frame, near the first connector. The hydraulic circuit connection is achieved by merging the second connector with the first connector when the hydraulic caliper is fixed to the frame. The key to this solution is directly merging the second connector with the first connector, and ensuring that the installation position of the second connector is related to the locking position when the hydraulic caliper is fixed to the frame. Only in this way can the first and second connectors merging and forming a stable hydraulic circuit connection be achieved simultaneously with the caliper being fixed to the frame. By directly connecting the first connector on the frame to the second connector on the hydraulic caliper, instead of connecting via an external jumper or pulling the internally routed oil line to the outside to connect to the hydraulic caliper, exposed oil lines are avoided at the installation location of the hydraulic caliper. This effectively reduces the possibility of interference between the oil line and the spokes or other components, improves the safety and stability of riding the bicycle, and makes the overall structure of the bicycle simpler and more aesthetically pleasing.

[0017] In technical solution two, the hydraulic caliper consists of a first caliper seat, a second caliper seat, and a braking assembly that are fixedly connected to each other. The second connector is set on the first caliper seat that is fixed to the frame. Since the second connector is also set on the first caliper seat, it is convenient to connect the first caliper seat to the frame while simultaneously connecting the second connector to the first connector on the frame. This arrangement provides a reliable structural foundation for the hydraulic circuit connection between the hydraulic caliper and the frame, and enhances the installation firmness of the entire braking system on the frame.

[0018] In technical solution three, an oil filling hole connected to the caliper's hydraulic circuit is provided on the second caliper seat and sealed with a removable plug. This facilitates the maintenance and upkeep of the internal hydraulic circuit of the hydraulic caliper, allowing for oil replenishment or replacement without disassembling the entire hydraulic caliper. This improves maintenance efficiency, reduces maintenance costs, and extends the service life of the hydraulic caliper. Furthermore, oil can be directly injected into the oil supply lines within the entire frame through the oil filling hole, facilitating the replacement or replenishment of oil within the oil supply lines.

[0019] In technical solution four, the braking assembly includes a first piston, a second piston, a first brake pad, a second brake pad, and an elastic reset member. A first hydraulic chamber and a second hydraulic chamber, which are interconnected, are respectively provided in the first caliper and the second caliper. The piston is slidably mounted in the hydraulic chamber along a first direction. The brake pad is fixed to the piston and forms a braking space. The elastic reset member acts on the brake pad to push the pistons away from each other. This configuration achieves a stable and reliable hydraulic braking function, enabling rapid response to braking operations, providing sufficient braking force, and automatically resetting after braking, ensuring the normal cyclic operation of the braking system and improving the performance and reliability of the bicycle brakes.

[0020] In technical solution five, the second connector is connected to the first oil hole at the bottom of the first hydraulic chamber, and the oil injection hole is connected to the second oil hole at the bottom of the second hydraulic chamber. A third oil hole is provided at the bottom of the first hydraulic chamber, and a fourth oil hole is provided at the bottom of the second hydraulic chamber. These are connected through the first and second channels that intersect on the first and second caliper seats. This arrangement ensures that the hydraulic fluid can drive the first and second pistons from the bottom, optimizes the hydraulic fluid transmission path inside the hydraulic caliper, guarantees the stable transmission and uniform action of hydraulic pressure throughout the caliper's hydraulic circuit, improves the consistency and stability of braking, and reduces the risk of brake failure due to poor hydraulic fluid flow.

[0021] In technical solution six, a male-female plug-in method is used to connect the first and second connectors. The shape design of the male and female connectors allows for automatic alignment and tight connection during insertion, ensuring accurate connection and sealing, while also facilitating installation and disassembly. This design simplifies the connection process between the hydraulic caliper and the frame, improves installation efficiency, reduces installation difficulty, ensures good hydraulic circuit connection, reduces the risk of hydraulic leakage, and enhances the reliability of the entire braking system.

[0022] In technical solution seven, a caliper sealing ring is provided between the first connector and the second connector, and it abuts against the surface of the first connector or the frame facing the hydraulic caliper to form a seal. When the sealing ring is compressed by the connector, it undergoes elastic deformation, filling the tiny gaps between the connectors, preventing oil leakage, and ensuring the sealing of the oil circuit.

[0023] In technical solution eight, a sealing ring groove is provided around the second connector, and the caliper sealing ring is embedded and fixed in the sealing ring groove. The sealing ring groove provides a stable installation position for the caliper sealing ring, preventing the caliper sealing ring from shifting or falling off during use, and ensuring the durability of the sealing effect.

[0024] Technical Solution Nine provides a hydraulic circuit connection structure for a hydraulic caliper. This structure involves installing a first connector on the frame and a second connector on the hydraulic caliper, achieving connection between the connectors when the hydraulic caliper is fixed to the frame. This hydraulic circuit connection structure ensures a simple and effective connection between the hydraulic caliper and the frame, improves the interference problem of external oil lines, and provides a reliable hydraulic circuit architecture foundation for the stable operation of the bicycle braking system.

[0025] Technical solution ten provides a bicycle in which a hydraulic caliper from any one of technical solutions one through eight is installed on the bicycle, including a frame, and the second connector of the hydraulic caliper is connected to the first connector of the frame. In practical applications of bicycles, the organic integration of the hydraulic caliper with the frame provides a safe, reliable, aesthetically pleasing, and easy-to-maintain braking system solution, improving the overall performance of the bicycle and the user experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an embodiment of the oil circuit connection structure involved in this utility model;

[0028] Figure 2 The structure of the hydraulic caliper involved in this utility model exploded. Figure 1 ;

[0029] Figure 3 The structure of the hydraulic caliper involved in this utility model exploded. Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the assembly state of the hydraulic caliper involved in this utility model. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the assembly state of the hydraulic caliper involved in this utility model. Figure 2 ;

[0032] Figure 6 This is a schematic diagram of the assembly state of the hydraulic caliper involved in this utility model. Figure 3 .

[0033] Explanation of key figure labels:

[0034] Hydraulic caliper 10; second connector 11; first caliper seat 12; first hydraulic chamber 121; first channel 122; second caliper seat 13; second hydraulic chamber 131; second channel 132; brake assembly 14; oil injection hole 15; sealing element 16; caliper sealing ring 17; sealing ring groove 18; threaded hole 19;

[0035] Frame 20; Oil pipe 21; First connector 22; Connector sealing ring 23; Fastening hole 24;

[0036] Fastener 30. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0038] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0039] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does 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 limiting the specific protection scope of this utility model.

[0040] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0041] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0042] In the claims, description and drawings of this invention, the term "interference fit" or its variations means: in mechanical assembly, a fit in which the actual size of the shaft is larger than the actual size of the hole, and pressure is generated between the two after assembly, wherein the algebraic difference between the hole and shaft sizes is negative.

[0043] In the claims, description and the above drawings of this invention, the term "fitting connection" or its variations means: the surfaces of two or more objects are in close contact and are fitted together, usually relying on friction, clamping force, adhesive or the fit of their own shapes to achieve the connection, so that the parts form a whole to a certain extent and can jointly withstand external forces and other effects.

[0044] In the claims, description and the above drawings of this invention, the term "step-like" or its variations means that the surface (or outline) of an object presents a step-like shape, that is, it is composed of a series of planes (or approximate planes) of different heights (or depths) connected in sequence, with a significant height difference between each two adjacent planes, just like the steps of a staircase.

[0045] In the claims, description and drawings of this invention, the term "butt" or its variations means: a method in which two joints achieve the functions of connecting, transmitting materials or signals by directly bringing their ends together so that the connecting parts of the joints are in close contact on the same axis.

[0046] In the claims, description and the above drawings of this invention, the term "male and female plug-in" or its variations means that two elements having a protruding part (male head) and a corresponding recessed part (female head) are tightly joined together by inserting the male head into the female head, thereby realizing functions such as electrical connection, fluid transmission or mechanical fixation.

[0047] Example

[0048] This utility model relates to an oil circuit connection structure for a bicycle and a hydraulic caliper 10. The bicycle mainly includes a frame 20 and a hydraulic caliper 10. The frame 20 is provided with a first connector 22 communicating with an oil supply pipe 21 for conveying hydraulic fluid. The portion of the oil supply pipe 21 near the first connector 22 is located inside the frame 20. Furthermore, a hydraulic handle can be installed on the frame 20. The hydraulic handle is connected to the other end of the oil supply pipe 21. By operating the hydraulic handle, the hydraulic fluid in the oil supply pipe 21 moves, driving the hydraulic caliper 10 to clamp the brake pads, thereby achieving braking of the bicycle. Of course, the hydraulic caliper 10 involved in this utility model can not only be applied to bicycles, but also to other related products, such as wheelchairs.

[0049] In the hydraulic circuit connection structure of the hydraulic caliper 10 involved in this embodiment, the hydraulic caliper 10 is provided with a second connector 11. The second connector 11 is connected to the caliper hydraulic circuit inside the hydraulic caliper 10, and when the hydraulic caliper 10 is fixed to the frame 20, the second connector 11 is connected to the first connector 22. This hydraulic circuit connection structure ensures a simple and effective hydraulic circuit connection between the hydraulic caliper 10 and the frame 20 from the perspective of the overall hydraulic circuit connection structure, improves the interference problem of the external oil supply pipe 21, and provides a reliable hydraulic circuit architecture foundation for the stable operation of the bicycle braking system.

[0050] Furthermore, the specific structure of the frame 20 and the hydraulic caliper 10 will be described below.

[0051] Reference Figure 1 The oil supply pipe 21 is pre-embedded in the tube body of the frame 20, and a first connector 22 is provided on the tube body. In this embodiment, the tube body with the first connector 22 is the rear chainstay tube of the frame 20. At the rear chainstay tube, the portion of the oil supply pipe 21 near the first connector 22 is located inside the frame 20.

[0052] Specifically, the pipe body is formed by the enclosure of the pipe wall, for example, refer to Figure 1 The rear lower fork pipe structure shown has an oil delivery pipe 21 fixed to the inner wall of the pipe body, with a countersunk hole recessed in the pipe wall into which the first connector 22 is embedded. The pipe wall can be entirely made of carbon fiber material, or of a composite material containing carbon fiber, such as with added glass fiber. Of course, in other embodiments, the pipe wall can also be made of metal material, such as aluminum alloy.

[0053] When the pipe fittings are made of materials such as carbon fiber, the oil pipe 21 can be pre-placed in the middle of the multiple layers of carbon fiber that make up the pipe wall, and then formed together with the carbon fiber. At this time, the space occupied by the oil pipe 21 between the carbon fibers can form an installation channel for the oil pipe 21. Since the oil pipe 21 and the pipe wall are formed together, the outer wall of the oil pipe 21 can form a tight fit with the inner wall of the installation channel, and the oil pipe 21 is tightly wrapped and fixed by the installation channel. The first connector 22 can be fixed to the pipe wall during the pipe wall forming process, or after the pipe wall is formed, the first connector 22 can be fixed to the pipe wall and made to communicate with the oil pipe 21. This design not only reduces the assembly process of inserting the oil pipe 21 into the frame 20, but also ensures a strong connection between the oil pipe 21 and the pipe body. Furthermore, the pipe wall structure is strong, and after the oil pipe 21 is wrapped by the installation channel, the oil pressure it receives will be transmitted to the pipe wall. Therefore, the thickness of the oil pipe 21 can be made thinner than that of conventional brake cable oil pipes, further increasing the inner diameter of the oil pipe 21 to facilitate the transmission of oil pressure.

[0054] Alternatively, in other embodiments, the outer surface of the oil pipe 21 can be directly bonded to the inner surface of the pipe wall. For example, during the pipe wall forming process, the oil pipe 21 is placed at the innermost layer of the pipe wall, and then the oil pipe 21 and the pipe wall are formed together. Because the pipe wall is made of carbon fiber material, the outer layer of the oil pipe 21 can be directly connected to the inner surface of the pipe wall during the thermoforming process. In addition, an adhesive can be applied to the outer surface of the oil pipe 21. When the oil pipe 21 is placed in the installation channel, the adhesive can further fix the oil pipe 21 to the installation channel. With this configuration, the oil pipe 21 will not wobble in its radial direction, and it will also be fixed to the pipe wall in its extension direction. The oil pipe 21 will not slide back and forth in the installation channel, which can further prevent the first joint 22 from loosening between itself and the pipe wall due to the influence of the oil pipe 21.

[0055] The bottom of the first connector 22 is provided with a hollow insert, which can be inserted into the oil pipe 21 and form an interference fit with the oil pipe 21. The interference fit between the insert and the oil pipe 21 enables the oil pipe 21 and the first connector 22 to form an oil passage connection.

[0056] A downward-recessed countersunk hole is provided on the outer surface of the pipe wall. The bottom of this countersunk hole has a through-hole that penetrates the pipe wall, and the position of this through-hole corresponds to the end position of the oil delivery pipe 21 within the pipe wall. In a further embodiment, the end of the oil delivery pipe 21 can be inserted into the through-hole at the bottom of the countersunk hole to limit its position. Corresponding to the countersunk hole, a first connector 22 is embedded and fixed within it. The lower end of the first connector 22 is provided with a axially extending insert. The insert is hollow inside and open at both ends. This insert can pass through the through-hole at the bottom of the countersunk hole, thereby extending into the oil delivery pipe 21. The outer diameter of the insert is adapted to the inner diameter of the oil delivery pipe 21, allowing the insert to form an interference fit with the oil delivery pipe 21 after insertion. The countersunk hole allows for a larger contact area between the first connector 22 and the pipe wall. Simultaneously, the inner circumferential wall of the countersunk hole limits the movement of the first connector 22, preventing it from wobbling circumferentially. Furthermore, the axial movement of the first connector 22, which is in the same direction as the extension of the oil pipe 21, is further restricted due to its fixed connection to the oil pipe 21, making it less prone to loosening. Additionally, by providing the countersunk hole, the first connector 22 does not need to protrude beyond the outer wall surface of the pipe, or only slightly protrudes, facilitating the connection between the first connector 22 and the second connector 11 and reducing dirt accumulation.

[0057] The inner wall of the countersunk hole and the outer wall of the first joint 22 are stepped in a corresponding manner. For example, refer to... Figure 1 , Figure 1The countersunk hole and the first connector 22 shown are shaped with a stepped structure. The inner wall of the countersunk hole forms a right-angle bend at the middle position of the axial direction, and a corresponding right-angle bend is formed at the middle position of the first connector 22 in the axial direction. The fit between the steps further increases the contact area between the two, allowing the first connector 22 to be more firmly installed on the pipe wall.

[0058] Furthermore, fastening holes 24 are provided through the tube on both sides of the first connector 22. These fastening holes 24 are for threaded fasteners 30 to pass through, and the fasteners 30 can be threaded into the pre-drilled threaded holes 19 on the hydraulic caliper 10, thereby fixing the hydraulic caliper 10 to the frame 20. Also, while the hydraulic caliper 10 is fixed to the frame 20, the second connector 11 on the hydraulic caliper 10 can be directly connected to the first connector 22.

[0059] Reference Figure 1 , Figure 2 and Figure 3 The hydraulic caliper 10 includes a first caliper seat 12 and a second caliper seat 13 fixedly connected to each other, and a brake assembly 14 mounted on the first caliper seat 12 and the second caliper seat 13 and adapted to clamp the brake pads by hydraulic pressure. The first caliper seat 12 is fixedly connected to the vehicle frame 20 and is provided with a second connector 11. The second caliper seat 13 is provided with an oil injection hole 15, which communicates with the caliper oil passage in the second caliper seat 13 and is sealed by a removable sealing member 16.

[0060] In addition, a caliper seal ring 17 is included; the caliper seal ring 17 is located between the first connector 22 and the second connector 11, and is adapted to abut against the surface of the first connector 22 or the frame 20 facing the hydraulic caliper 10 to form a seal. The second connector 11 is provided with a sealing ring groove 18 around it, and the caliper seal ring 17 is embedded and fixed in the sealing ring groove 18.

[0061] Specifically, first refer to Figure 2 and Figure 3 The two images show exploded views of the hydraulic caliper 10 from two different perspectives. The hydraulic caliper 10 mainly includes a first caliper seat 12 and a second caliper seat 13 made of metal. A braking assembly 14 is installed on the first caliper seat 12 and the second caliper seat 13. The hydraulic fluid delivered by the oil pipe 21 can transmit the pressure of the hydraulic handle to the hydraulic caliper 10 and drive the braking assembly 14 to clamp the brake pads, thereby achieving braking of the bicycle.

[0062] The first caliper is equipped with the aforementioned second connector 11. In this embodiment, the first connector 22 and the second connector 11 are connected by a male-female mating method. Specifically, the first connector 22 has a recessed mating groove, and the second connector 11 has a protruding mating protrusion. A through hole is provided at the bottom of the mating groove to connect to the oil supply pipe 21. The mating protrusion has a hollow internal structure, and after the mating protrusion is inserted into the mating groove, its opening can communicate with the through hole at the bottom of the mating groove, allowing oil to be delivered from the first connector 22 to the second connector 11. The male-female mating method connects the first connector 22 and the second connector 11. The shape design of the male and female connectors allows for automatic alignment and tight connection during insertion, ensuring accurate and airtight connection, while facilitating installation and disassembly. This design simplifies the connection process between the hydraulic caliper 10 and the frame 20, improves installation efficiency, reduces installation difficulty, ensures good oil circuit connection, reduces the risk of oil leakage, and enhances the reliability of the entire braking system.

[0063] Furthermore, a sealing ring groove 18 is provided around the outer periphery of the mating protrusion, and a caliper sealing ring 17 is embedded and fixed in the sealing ring groove 18, as shown in the figure. Figure 1 When the mating protrusion is inserted into the mating groove, the caliper seal ring 17 abuts against the surface of the first connector 22 on the frame 20 facing the hydraulic caliper 10, thereby applying pressure to the caliper seal ring 17 to deform it, thus forming a seal between the first connector 22 and the second connector 11. Of course, in other embodiments, the caliper seal ring 17 may also abut against the outer surface of the tube wall of the frame 20.

[0064] In addition, refer to Figure 2 , Figure 4 and Figure 5 On the first jaw 12 of the hydraulic caliper 10, on the same surface where the second connector 11 is located, two threaded holes 19 are also provided. The positions of these two threaded holes 19 correspond to the positions of the two fastening holes 24 on the frame 20. The first jaw 12 can be fixedly installed on the frame 20 by fasteners 30. At the same time, the first jaw 12 and the second jaw 13 are fixedly connected by bolts extending in the first direction. Therefore, the hydraulic caliper 10 as a whole can be installed and fixed on the frame 20.

[0065] Reference Figure 3 and Figure 6An oil injection hole 15 is provided on the second clamp seat 13. This oil injection hole 15 is connected to the caliper oil passage in the second clamp seat 13, and the caliper oil passage in the second clamp seat 13 is also connected to the caliper oil passage in the first clamp seat 12. Therefore, oil can be injected into the caliper oil passage of the hydraulic caliper 10 through the oil injection hole 15. The oil injection hole 15 can be sealed by a sealing member 16. In this embodiment, the sealing member 16 is a threaded plug, which can form a threaded fit with the wall of the oil injection hole 15. To improve the sealing effect of the sealing member 16 on the oil injection hole 15, a sealing rubber ring can also be provided between the two.

[0066] Further, the braking assembly 14 includes a first piston, a second piston, a first brake pad, a second brake pad, and an elastic reset member; the first caliper seat 12 and the second caliper seat 13 are respectively provided with a first hydraulic chamber 121 and a second hydraulic chamber 131, and the first hydraulic chamber 121 and the second hydraulic chamber 131 are connected through a caliper oil passage; the first piston and the second piston are slidably mounted in the first hydraulic chamber 121 and the second hydraulic chamber 131 along a first direction, so as to move towards each other under hydraulic pressure; the first brake pad and the second brake pad are respectively fixed to the first piston and the second piston, and a braking space for the brake pad to extend into is formed between them; the two ends of the elastic reset member act on the first brake pad and the second brake pad along the first direction to push the first piston and the second piston away from each other.

[0067] The second connector 11 is connected to the first oil hole at the bottom of the first hydraulic chamber 121, and the oil injection hole 15 is connected to the second oil hole at the bottom of the second hydraulic chamber 131. The bottom of the first hydraulic chamber 121 is also provided with a third oil hole, and the bottom of the second hydraulic chamber 131 is also provided with a fourth oil hole. The third and fourth oil holes are connected by a first channel 122 and a second channel 132 respectively located on the first clamp seat 12 and the second clamp seat 13 and connected to each other. It should be noted that the first, second, third, and fourth oil holes are not shown in the accompanying drawings, but those skilled in the art will understand how they should be configured, and will not be elaborated upon here.

[0068] Specifically, refer to Figures 2 to 6A first hydraulic chamber 121 and a second hydraulic chamber 131 are respectively provided on the first clamp seat 12 and the second clamp seat 13. The second connector 11 is connected to the first hydraulic chamber 121 through the first oil hole. At the same time, a first channel 122 and a second channel 132 are respectively provided on the first clamp seat 12 and the second clamp seat 13. When the first clamp seat 12 and the second clamp seat 13 are fixed together, they are connected to each other. The oil in the first hydraulic chamber 121 enters the first channel 122 through the third oil hole, and then enters the second hydraulic chamber 131 through the second channel 132 and the fourth oil hole. The second oil hole in the second hydraulic chamber 131 is connected to the oil injection hole 15. The oil can be injected into the second hydraulic chamber 131 from the oil injection hole 15 and enter the first hydraulic chamber 121 and the oil supply pipe 21, or the oil can be released from the oil injection hole 15.

[0069] A first piston and a second piston are respectively installed in the first hydraulic chamber 121 and the second hydraulic chamber 131. Grooves are provided on the walls of both chambers, and piston sealing rings are embedded within these grooves to prevent oil leakage. The bottom surfaces of the first and second pistons face the bottom of the first hydraulic chamber 121. The oil pressure drives the first and second pistons to move towards each other in a first direction. A first brake pad and a second brake pad are respectively installed at the free ends of the first and second pistons in the first direction. Driven by the first and second pistons, these two pads clamp the brake pads. Simultaneously, two elastic arms of the elastic reset member are connected to the first and second brake pads, respectively. These elastic arms allow the first and second pistons to reset when the oil pressure decreases.

[0070] Among them, reference Figure 5 A braking space is formed between the first and second brake pads, into which the brake pads can extend. See also... Figure 2 , Figure 3 and Figure 4 The braking assembly 14 also includes a pin that passes sequentially through the first brake pad, the second brake pad, and the elastic return member along a first direction. The elastic return member is approximately "V"-shaped, with two elastic arms connected to the first and second brake pads respectively forming an outwardly extending structure within its shape. The pin ensures the stability of the elastic return member's position and allows the first and second brake pads to move accurately along the first direction.

[0071] The bicycle according to this embodiment of the utility model uses the aforementioned hydraulic caliper 10. A second connector 11, communicating with the internal hydraulic circuit of the caliper, is provided on the hydraulic caliper 10. A first connector 22, communicating with the oil supply pipe 21 and located within the frame 20 near the first connector 22, is provided on the frame 20. The hydraulic circuit connection is achieved by directly connecting the second connector 11 to the first connector 22 when the hydraulic caliper 10 is fixed to the frame 20. The key to this technical solution is that the second connector 11 is directly connected to the first connector 22, and the installation position of the second connector 11 is related to the locking position when the hydraulic caliper 10 is fixed to the frame 20. Only in this way can the first connector 22 and the second connector 11 be connected and form a stable hydraulic circuit connection while the hydraulic caliper 10 is fixed to the frame 20. Because the first connector 22 on the frame 20 is directly connected to the second connector 11 on the hydraulic caliper 10, instead of being connected via an external jumper or having the internally routed oil pipe 21 pulled out to the outside and connected to the hydraulic caliper 10, the installation position of the hydraulic caliper 10 avoids the formation of an exposed oil pipe 21, effectively reducing the possibility of interference between the oil pipe 21 and the spokes or other components, improving the safety and stability of the bicycle, and making the overall structure of the bicycle simpler and more aesthetically pleasing.

[0072] In practical applications on bicycles, the integration of hydraulic calipers 10 with the frame 20 provides a safe, reliable, aesthetically pleasing, and easy-to-maintain braking system solution, enhancing the overall performance and user experience of the bicycle.

[0073] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A hydraulic caliper for mounting to a frame (20), the frame (20) having a first connector (22) communicating with an oil supply pipe (21) for supplying hydraulic fluid, the portion of the oil supply pipe (21) near the first connector (22) being located within the frame (20), characterized in that, The hydraulic caliper (10) is provided with a second connector (11), which is connected to the caliper oil circuit inside the hydraulic caliper (10). When the hydraulic caliper (10) is fixed to the frame (20), the second connector (11) is connected to the first connector (22).

2. A hydraulic caliper as described in claim 1, characterized in that, The hydraulic caliper (10) includes a first caliper seat (12) and a second caliper seat (13) fixedly connected to each other, and a brake assembly (14) mounted on the first caliper seat (12) and the second caliper seat (13) and adapted to clamp the brake pads by hydraulic pressure; the first caliper seat (12) is fixedly connected to the vehicle frame (20) and is provided with the second connector (11).

3. A hydraulic caliper as described in claim 2, characterized in that, The second clamp seat (13) is provided with an oil injection hole (15), which is connected to the caliper oil passage in the second clamp seat (13) and is sealed by a detachable sealing member (16).

4. A hydraulic caliper as described in claim 3, characterized in that, The braking assembly (14) includes a first piston, a second piston, a first brake pad, a second brake pad, and an elastic reset member; the first caliper seat (12) and the second caliper seat (13) are respectively provided with a first hydraulic chamber (121) and a second hydraulic chamber (131), and the first hydraulic chamber (121) and the second hydraulic chamber (131) are connected through a caliper oil circuit; the first piston and the second piston are slidably mounted in the first hydraulic chamber (121) and the second hydraulic chamber (131) along a first direction, so as to move towards each other under hydraulic pressure; the first brake pad and the second brake pad are respectively fixed to the first piston and the second piston, and a braking space for the brake pad to extend into is formed between them; the two ends of the elastic reset member act on the first brake pad and the second brake pad along the first direction to push the first piston and the second piston away from each other.

5. A hydraulic caliper as described in claim 4, characterized in that, The second connector (11) is connected to the first oil hole at the bottom of the first hydraulic chamber (121), and the oil injection hole (15) is connected to the second oil hole at the bottom of the second hydraulic chamber (131). The bottom of the first hydraulic chamber (121) is also provided with a third oil hole, and the bottom of the second hydraulic chamber (131) is also provided with a fourth oil hole. The third oil hole and the fourth oil hole are connected by a first channel (122) and a second channel (132) respectively provided on the first clamp seat (12) and the second clamp seat (13) and connected to each other.

6. A hydraulic caliper as described in claim 1, characterized in that, The first connector (22) and the second connector (11) are connected by a male-female plug-in method.

7. A hydraulic caliper as described in claim 1, characterized in that, It also includes a caliper seal (17); the caliper seal (17) is located between the first connector (22) and the second connector (11) and is adapted to abut against the surface of the first connector (22) or the frame (20) facing the hydraulic caliper (10) to form a seal.

8. A hydraulic caliper as described in claim 7, characterized in that, The second connector (11) is surrounded by a sealing ring groove (18), and the caliper sealing ring (17) is embedded and fixed in the sealing ring groove (18).

9. A hydraulic circuit connection structure for a hydraulic caliper, wherein the hydraulic caliper (10) is fixedly connected to a vehicle frame (20), characterized in that, The frame (20) is provided with a first connector (22) that communicates with an oil delivery pipe (21) for conveying oil, and the portion of the oil delivery pipe (21) near the first connector (22) is located inside the frame (20); The hydraulic caliper (10) is provided with a second connector (11), which is connected to the caliper oil circuit inside the hydraulic caliper (10). When the hydraulic caliper (10) is fixed to the frame (20), the second connector (11) is connected to the first connector (22).

10. A bicycle comprising a frame (20) having a first connector (22) communicating with an oil supply pipe (21) for conveying oil, the portion of the oil supply pipe (21) near the first connector (22) being located within the frame (20), characterized in that, It also includes a hydraulic caliper (10) as described in any one of claims 1-8, the hydraulic caliper (10) being fixed to the frame (20), and its second connector (11) being connected to the first connector (22) on the frame (20).

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