Oil disc upper pump without locking clamping ring and hidden oil pipe

Abstract

The invention discloses an oil disc upper pump without a locking clamping ring and with a hidden oil pipe, which relates to the technical field of bicycle brake systems and comprises a transverse pipe assembly, a handle assembly, an oil passing screw and an oil pipe assembly. The transverse pipe assembly is composed of a handlebar transverse pipe, a handlebar sleeve and an internal expansion component, and the internal expansion component is used for fixing the upper pump into the handlebar transverse pipe. The handle assembly comprises a brake handle and an upper pump, and the upper pump is connected with the horizontal pipe assembly and the oil pipe assembly through a protruding part of the upper pump. A T-shaped oil way is arranged in the oil passing screw and used for guiding oil liquid to the universal joint. The oil pipe assembly comprises a universal joint, an oil needle, an oil pipe, a clamp, a clamp locking screw and an oil needle sealing ring, and oil circulation is ensured and leakage is prevented. By means of the hidden oil pipe and the internal expansion mechanism, the problems that an oil pipe and a locking clamping ring of a traditional oil pressure disc brake system are exposed are solved, the appearance is more concise and attractive, and meanwhile the sensitivity and reliability of the brake system are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle brake systems, in particular to a locking clamp ring-free and oil pipe-less hidden oil disc upper pump. Background Art

[0002] Nowadays, cycling is becoming more and more popular and has become the best choice for people's daily travel and exercise. As people's requirements for high-quality cycling become higher and higher, more and more bicycles choose to use hydraulic disc brakes as the main braking method. Compared with other braking methods, hydraulic disc brakes have the advantages of strong braking force and light braking feel.

[0003] However, the oil pipe of the traditional hydraulic disc brake system is usually exposed outside the handlebar cross tube, resulting in messy wiring and affecting the neat appearance. This not only affects the appearance, but is also easily affected by the external environment, causing damage to the oil pipe or oil leakage. In addition, the upper pump is usually fixed to the handlebar cross tube by a clamp ring, and the exposed clamp ring affects the appearance. The present invention aims to solve the above problems and provide an oil disc upper pump device with a completely hidden oil pipe and no exposed locking clamp ring, so that the appearance of the bicycle is more simple and beautiful. Summary of the invention

[0004] The object of the present invention is to provide an oil disc upper pump without a locking clamp ring and an oil pipe hidden, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A locking clamp ring-free and oil pipe-less oil disc upper pump, comprising:

[0007] A cross tube assembly, the cross tube assembly includes a cross tube, a handle cover and an internal expansion member, the cross tube is provided with two holes, the handle cover is fixedly connected to the outside of the cross tube, and the internal expansion mechanism is used to fix the upper pump inside the cross tube;

[0008] The handle assembly includes a brake handle and an upper pump. The upper pump has two protruding parts: an upper pump oil pipe protrusion and an upper pump fixing protrusion. The upper pump oil pipe protrusion is used to connect the oil pipe assembly, and the upper pump fixing protrusion is used to connect the inner expansion member. The upper pump oil pipe protrusion and the upper pump fixing protrusion are respectively inserted into two holes on the cross pipe. The upper pump oil pipe protrusion is provided with an upper pump oil passage hole.

[0009] The oil-through screw is fixed to the protrusion of the upper pump oil pipe through a threaded connection. A T-shaped oil-through screw oil passage is provided inside the oil-through screw to guide the oil from the upper pump cavity to the universal joint;

[0010] The oil pipe assembly includes a universal joint, an oil needle, an oil pipe, a clamp ring and a clamp ring locking screw. The universal joint is locked on the upper pump oil pipe protrusion by the oil screw, the oil needle is inserted into the oil pipe, the clamp ring passes through the oil pipe and is connected to the universal joint by the clamp ring locking screw, and an oil needle sealing ring is provided at the front end of the oil needle for sealing.

[0011] As a further solution of the present invention: the internal expansion component includes an internal expansion lower slider, an internal expansion upper slider, an upper pump fixing screw and an internal expansion fixing ring, the upper pump fixing screw passes through the internal expansion upper slider and the internal expansion lower slider, and is connected to the upper pump fixing protrusion thread through the internal expansion fixing ring.

[0012] As a further solution of the present invention: the handle assembly also includes a shaft disc, a push rod, a piston and a lip-shaped sealing ring. The brake handle is connected to the push rod through the shaft disc. One end of the push rod is connected to the shaft disc, and the other end is connected to the piston. The front end of the piston is fixedly connected to the lip-shaped sealing ring. The shaft disc, push rod, piston and lip-shaped sealing ring are all arranged inside the upper pump.

[0013] As a further solution of the present invention: the upper pump oil circuit hole is communicated with the oil circuit of the oil-passing screw.

[0014] As a further solution of the present invention: the oil pipe assembly also includes a universal joint oil circuit, an oil needle oil circuit and an oil pipe oil circuit. A universal joint oil circuit is provided inside the universal joint to guide the oil from the oil screw oil circuit to the oil needle. An oil needle oil circuit is provided inside the oil needle to guide the oil from the universal joint oil circuit to the oil pipe. An oil pipe oil circuit is provided inside the oil pipe to guide the oil from the oil needle oil circuit to the lower caliper.

[0015] As a further solution of the present invention: universal joint oil seals are respectively pressed at the front and rear ends of the universal joint to prevent oil leakage.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the device hides the oil pipe inside the handlebar, with a neat appearance, which improves the overall aesthetics of the bicycle; the internal expansion mechanism fixes the upper pump, avoids the loosening problem of the traditional locking clamp ring, and improves the reliability of the system. The device simplifies the installation and disassembly process of the upper pump, making it easy to maintain and replace; and through the design of the oil needle seal ring and the universal joint oil seal, it effectively prevents oil leakage and improves the sealing performance of the system. The use effect of the device is outstanding and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic diagram is a structural diagram of a concealed oil disc upper pump without a locking clamp ring and an oil pipe.

[0018] Figure 2 The utility model is a structural schematic diagram of an internal expansion upper slider and an internal expansion lower slider in an oil disc upper pump without a locking clamp ring and an oil pipe.

[0019] Figure 3The figure is a side view of a concealed oil disc upper pump without a locking clamp ring and an oil pipe.

[0020] Figure 4 for Figure 3 AA cross-section diagram.

[0021] Figure 5 The present invention is a structural schematic diagram of a cross pipe assembly in an oil disc upper pump without a locking clamp ring and an oil pipe hidden therein.

[0022] Figure 6 The present invention is a structural schematic diagram of a handle assembly in an oil disc upper pump without a locking clamp ring and an oil pipe.

[0023] Figure 7 The present invention is a structural schematic diagram of an oil-through screw in an oil-disc upper pump without a locking clamp ring and an oil pipe.

[0024] Figure 8 The present invention is a structural schematic diagram of an oil pipe assembly in an oil disc upper pump without a locking clamp ring and an oil pipe hidden therein.

[0025] In the figure: 1, cross tube assembly; 101, cross tube; 102, handle cover; 2, internal expansion member; 3, handle assembly; 301, brake handle; 302, upper pump; 303, upper pump oil pipe protrusion; 304, upper pump fixing protrusion; 305, upper pump oil passage hole; 306, shaft plate; 307, push rod; 308, piston; 309, lip seal ring; 4, oil screw; 5, oil screw oil passage; 6. Oil pipe assembly; 601. Universal joint; 602. Oil needle; 603. Oil pipe; 604. Clamp ring; 605. Clamp ring locking screw; 606. Oil needle sealing ring; 607. Universal joint oil circuit; 608. Oil needle oil circuit; 609. Oil pipe oil circuit; 201. Internal expansion lower slider; 202. Internal expansion upper slider; 203. Upper pump fixing screw; 204. Internal expansion fixing ring; 7. Universal joint oil seal. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] Embodiment 1

[0031] See also Figure 1-8 , a locking clamp ring and oil pipe hidden oil disc upper pump, comprising:

[0032] A cross tube assembly 1, the cross tube assembly 1 comprising a cross tube 101, a handle cover 102 and an internal expansion member 2, the cross tube 101 is provided with two holes, the handle cover 102 is fixedly connected to the outside of the cross tube 101, and the internal expansion mechanism is used to fix the upper pump 302 inside the cross tube 101;

[0033] The handle assembly 3 includes a brake handle 301 and an upper pump 302. The upper pump 302 has two protruding parts: an upper pump oil pipe protrusion 303 and an upper pump fixing protrusion 304. The upper pump oil pipe protrusion 303 is used to connect the oil pipe assembly 6. The upper pump fixing protrusion 304 is used to connect the inner expansion member 2. The upper pump oil pipe protrusion 303 and the upper pump fixing protrusion 304 are respectively inserted into two holes on the cross pipe. The upper pump oil pipe protrusion 303 is provided with an upper pump oil passage hole 305.

[0034] An oil-through screw 4, which is fixed to the upper pump oil receiving pipe protrusion 303 by threaded connection, and a T-shaped oil-through screw oil passage 5 is provided inside the oil-through screw 4 for guiding the oil from the upper pump cavity to the universal joint 601;

[0035] The oil pipe assembly 6 includes a universal joint 601, an oil needle 602, an oil pipe 603, a clamping ring 604 and a clamping ring locking screw 605. The universal joint 601 is locked on the upper pump oil pipe protrusion 303 by the oil screw 4. The oil needle 602 is inserted into the oil pipe 603. The clamping ring 604 passes through the oil pipe 603 and is connected to the universal joint 601 by the clamping ring locking screw 605. The front end of the oil needle 602 is provided with an oil needle sealing ring 606 for sealing.

[0036] The internal expansion component 2 includes an internal expansion lower slider 201, an internal expansion upper slider 202, an upper pump fixing screw 203 and an internal expansion fixing ring 204. The upper pump fixing screw 203 passes through the internal expansion upper slider 202 and the internal expansion lower slider 201, and is threadedly connected to the upper pump fixing protrusion 304 through the internal expansion fixing ring 204.

[0037] The device is provided with an internal expansion member 2 to fix the upper pump 302 on the handlebar tube 101, the internal expansion lower slider 201 and the internal expansion upper slider 202 are connected through the upper pump fixing screw 203, and the internal expansion fixing ring 204 is sleeved on the upper pump fixing screw 203 to prevent the slider and the screw from falling off. The internal expansion mechanism is connected to the upper pump fixing protrusion 304 through the upper pump fixing screw 203. When the upper pump fixing screw 203 is tightened, the internal expansion lower slider 201 and the internal expansion upper slider 202 slide relative to each other under the pressure of the screw. Since the contact surface of the two sliders is an inclined surface, radial expansion force is generated during sliding, so that the slider is pressed against the inner wall of the handlebar tube 101. This internal expansion force can firmly fix the upper pump 302 inside the handlebar tube 101. That is, the internal expansion mechanism can be completely hidden inside the handlebar tube 101, and no locking device can be seen from the outside, making the appearance more simple and beautiful.

[0038] Embodiment 2

[0039] This embodiment further adds the following improvements on the basis of the first embodiment: the handle assembly 3 also includes a shaft disc 306, a push rod 307, a piston 308 and a lip seal 309, the brake handle 301 is connected to the push rod 307 through the shaft disc 306, one end of the push rod 307 is connected to the shaft disc 306, and the other end is connected to the piston 308, the front end of the piston 308 is fixedly connected to the lip seal 309, the shaft disc 306, the push rod 307, the piston 308 and the lip seal 309 are all arranged inside the upper pump 302.

[0040] The upper pump oil passage hole 305 of the device is connected with the oil passage screw oil passage 5.

[0041] The oil pipe assembly 6 of the present device also includes a universal joint oil circuit 607, an oil needle oil circuit 608 and an oil pipe oil circuit 609. A universal joint oil circuit 607 is provided inside the universal joint 601 for guiding the oil from the oil screw oil circuit 5 to the oil needle 602. An oil needle oil circuit 608 is provided inside the oil needle 602 for guiding the oil from the universal joint oil circuit 607 to the oil pipe 603. An oil pipe oil circuit 609 is provided inside the oil pipe 603 for guiding the oil from the oil needle oil circuit 608 to the lower caliper.

[0042] Universal joint oil seals 7 are respectively pressed on the front and rear ends of the universal joint 601 of the device to prevent oil leakage.

[0043] When the rider presses the brake handle 301, the brake handle 301 drives the push rod 307 to move forward through the shaft disc 306, and the push rod 307 pushes the piston 308 to move in the cavity of the upper pump 302, squeezing the brake oil in the cavity. The oil enters the oil screw oil circuit 5 through the upper pump oil circuit hole 305, and then passes to the lower caliper through the universal joint oil circuit 607, the oil needle oil circuit 608 and the oil pipe oil circuit 609, pushing the caliper piston to achieve braking. When the rider releases the brake handle 301, the push rod 307 returns to its position under the action of the spring, and the piston 308 also returns to its position. The oil returns from the lower caliper to the cavity of the upper pump 302, the caliper piston returns to its position, and the brake is released.

[0044] The connection mechanism between the brake handle 301 and the upper pump 302 of the device is hidden inside the handlebar cross tube 101, and the oil pipe 603 and the connection mechanism are not visible from the outside, making the appearance cleaner and neater.

[0045] How it works

[0046] The device is provided with an internal expansion member 2 to fix the upper pump 302 on the handlebar tube 101, the internal expansion lower slider 201 and the internal expansion upper slider 202 are connected by the upper pump fixing screw 203, and the internal expansion fixing ring 204 is sleeved on the upper pump fixing screw 203 to prevent the slider and the screw from falling off. The internal expansion mechanism is connected to the upper pump fixing protrusion 304 through the upper pump fixing screw 203. When the upper pump fixing screw 203 is tightened, the internal expansion lower slider 201 and the internal expansion upper slider 202 slide relative to each other under the pressure of the screw. Since the contact surface of the two sliders is an inclined surface, radial expansion force is generated during sliding, so that the slider is pressed against the inner wall of the handlebar tube 101. This internal expansion force can firmly fix the upper pump 302 inside the handlebar tube 101.

[0047] When the rider presses the brake handle 301, the brake handle 301 drives the push rod 307 to move forward through the shaft disc 306, and the push rod 307 pushes the piston 308 to move in the cavity of the upper pump 302, squeezing the brake oil in the cavity. The oil enters the oil screw oil circuit 5 through the upper pump oil circuit hole 305, and then passes to the lower caliper through the universal joint oil circuit 607, the oil needle oil circuit 608 and the oil pipe oil circuit 609, pushing the caliper piston to achieve braking. When the rider releases the brake handle 301, the push rod 307 returns to its position under the action of the spring, and the piston 308 also returns to its position. The oil returns from the lower caliper to the cavity of the upper pump 302, the caliper piston returns to its position, and the brake is released.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A concealed oil disc pump without locking clamp ring and oil pipe, characterized in that: include: A cross tube assembly (1), the cross tube assembly (1) comprising a cross tube (101), a handle cover (102) and an internal expansion member (2), the cross tube (101) being provided with two holes, the handle cover (102) being fixedly connected to the outside of the cross tube (101), and the internal expansion member being used to fix an upper pump (302) inside the cross tube (101); A handle assembly (3), the handle assembly (3) comprising a brake handle (301) and an upper pump (302), the upper pump (302) having two protruding parts: an upper pump oil pipe protrusion (303) and an upper pump fixing protrusion (304), the upper pump oil pipe protrusion (303) being used to connect to the oil pipe assembly (6), the upper pump fixing protrusion (304) being used to connect to the inner expansion member (2), the upper pump oil pipe protrusion (303) and the upper pump fixing protrusion (304) being respectively inserted into two holes on the transverse pipe, and an upper pump oil passage hole (305) being formed on the upper pump oil pipe protrusion (303); An oil-through screw (4), the oil-through screw (4) being fixed to the upper pump oil receiving pipe protrusion (303) by threaded connection, and a T-shaped oil-through screw oil passage (5) being provided inside the oil-through screw (4) for guiding oil from the upper pump cavity to the universal joint (601); An oil pipe assembly (6), the oil pipe assembly (6) comprising a universal joint (601), an oil needle (602), an oil pipe (603), a clamping ring (604) and a clamping ring locking screw (605); the universal joint (601) is locked on the upper pump oil pipe protrusion (303) through an oil through screw (4); the oil needle (602) is inserted into the oil pipe (603); the clamping ring (604) passes through the oil pipe (603) and is connected to the universal joint (601) through the clamping ring locking screw (605); and an oil needle sealing ring (606) is sleeved on the front end of the oil needle (602) for sealing.

2. The oil disc upper pump without locking clamp ring and oil pipe hidden according to claim 1 is characterized in that: The internal expansion component (2) comprises an internal expansion lower slider (201), an internal expansion upper slider (202), an upper pump fixing screw (203) and an internal expansion fixing ring (204); the upper pump fixing screw (203) passes through the internal expansion upper slider (202) and the internal expansion lower slider (201), and is threadedly connected to the upper pump fixing protrusion (304) through the internal expansion fixing ring (204).

3. The oil disc upper pump without locking clamp ring and oil pipe hidden according to claim 1 is characterized in that: The handle assembly (3) also includes a shaft disc (306), a push rod (307), a piston (308) and a lip seal (309); the brake handle (301) is connected to the push rod (307) via the shaft disc (306); one end of the push rod (307) is connected to the shaft disc (306) and the other end is connected to the piston (308); the front end of the piston (308) is fixedly connected to the lip seal (309); the shaft disc (306), the push rod (307), the piston (308) and the lip seal (309) are all arranged inside the upper pump (302).

4. The oil disc upper pump without locking clamp ring and oil pipe hidden according to claim 1 is characterized in that: The upper pump oil passage hole (305) is in communication with the oil passage screw oil passage (5).

5. The oil disc upper pump without locking clamp ring and oil pipe hidden according to claim 1 is characterized in that: The oil pipe assembly (6) further comprises a universal joint oil circuit (607), an oil needle oil circuit (608) and an oil pipe oil circuit (609); the universal joint oil circuit (607) is provided inside the universal joint (601) for guiding oil from the oil screw oil circuit (5) to the oil needle (602); the oil needle oil circuit (608) is provided inside the oil needle (602) for guiding oil from the universal joint oil circuit (607) to the oil pipe (603); the oil pipe oil circuit (609) is provided inside the oil pipe (603) for guiding oil from the oil needle oil circuit (608) to the lower caliper.

6. The oil disc upper pump without locking clamp ring and oil pipe hidden according to claim 5 is characterized in that: Universal joint oil seals (7) are respectively pressed on the front and rear ends of the universal joint (601) to prevent oil leakage.

Images