Novel wire pulling oil pressure upper pump and wire pulling oil disc

Abstract

The utility model relates to a novel wire pulling oil pressure upper pump and a wire pulling disc brake. The novel wire pulling oil pressure upper pump is used in cooperation with a handlebar stem of a bicycle frame and comprises an upper pump body, the upper pump body is provided with a first oil cylinder cavity and a second oil cylinder cavity which horizontally penetrate through the middle of the upper pump body and are arranged in parallel, driving parts are arranged in the first oil cylinder cavity and the second oil cylinder cavity, and a pull wire pulling the driving parts to move is arranged in the middle of the driving parts in a penetrating mode. The stay wire comprises an inner wire and a wire pipe wrapping the inner wire; the first ends, close to the traction direction of the driving piece, of the first oil cylinder cavity and the second oil cylinder cavity are provided with stay wire adjusting pieces, and the stay wire adjusting pieces are arranged on the inner wire in a sleeving mode and can movably push and abut against the end of the wire pipe so as to adjust the tightness of the stay wire. After the upper pump body is assembled, the tightness of the stay wire can be conveniently and quickly adjusted, and the advantages of a stay wire disc brake and an oil pressure disc brake are integrated.

Description

Technical Field

[0001] The present application relates to the field of bicycles, and in particular to a novel line-pulled oil pressure pump and a line-pulled oil disc. Background Art

[0002] Cable-pulled hydraulic disc brake is a new type of disc brake on the market that combines cable-pulled disc brake and hydraulic disc brake. It has the advantages of cable-pulled disc brake and hydraulic disc brake, with lower cost and better braking experience.

[0003] In the prior art, a Chinese patent with application number 202410103296.3 discloses a combined wire-pulled oil pressure upper pump and a wire-pulled oil disc, comprising an upper pump body, a first oil cylinder chamber and a second oil cylinder chamber opened on the upper pump body, a driving member, and a pull wire, wherein the first end of the pull wire is respectively connected to the two driving members to pull and control the activities of the two driving members, so that the oil in the first oil cylinder chamber is output through the first oil outlet, and the oil in the second oil cylinder chamber is output through the second oil outlet after passing through the oil path hole.

[0004] However, once the cable of the cable-pull oil pressure pump provided in the above-mentioned related technology is assembled, the adjustment of the tightness of the cable requires the disassembly of the structural parts, which makes the adjustment difficult and affects the braking feel, and there is room for further improvement. Summary of the invention

[0005] The embodiments of the present application provide a novel cable-pull oil pressure pump and a cable-pull oil disc, so as to at least solve the problem that once the cable of the brake cable-pull oil pressure pump in the related art is assembled, the tightness of the cable needs to be adjusted by disassembling the structural parts, which makes the adjustment difficult and affects the braking feel.

[0006] In the first aspect, the embodiment of the present application provides a novel wire-pulled oil pressure upper pump, which is used in conjunction with a handlebar of a bicycle frame, and includes an upper pump body, and the upper pump body has: a first oil cylinder cavity and a second oil cylinder cavity horizontally penetrating the middle thereof and arranged in parallel; a first oil outlet and a second oil outlet radially connected to the first oil cylinder cavity; and an oil passage hole coaxially arranged with the second oil outlet and connecting the first oil cylinder cavity and the second oil cylinder cavity, wherein the first oil cylinder cavity and the second oil cylinder cavity are both provided with a driving member, and a pulling wire for pulling the driving member is passed through the middle of the driving member, and the pulling wire includes an inner wire and a wire tube wrapped around the inner wire;

[0007] A wire adjustment member is mounted on the first end of the first oil cylinder cavity and the second oil cylinder cavity close to the traction direction of the driving member, and the wire adjustment member is sleeved on the inner wire and can be movably pushed against the end of the wire tube to adjust the tightness of the wire.

[0008] Optionally, the wire adjustment member includes:

[0009] A plug base, the interior of which is hollow for passing the inner wire and the exterior of which is arranged in sequence with a first external thread segment and a second external thread segment, wherein the first external thread segment is threadably assembled on the first end;

[0010] A fine-tuning screw, whose thread is assembled on the second external thread segment, and whose first end abuts against the end of the wire tube, and the position of the fine-tuning screw on the second external thread segment is adjusted by thread to push against the wire tube;

[0011] The adjusting nut is threadably assembled on the second external thread segment and is located between the fine-tuning screw and the first external thread segment to fix the position of the fine-tuning screw.

[0012] Optionally, a hexagonal bolt portion is integrally formed on one end of the second external thread segment away from the first external thread segment, so as to cooperate with a tool to threadably fasten the first external thread segment and the first end.

[0013] Optionally, the driving member comprises:

[0014] A piston rod is movably inserted in the first oil cylinder cavity or the second oil cylinder cavity, and a hollow hole for passing the inner line is axially opened in the middle thereof;

[0015] A first sealing ring, which is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and sleeved on the first radial end of the piston rod;

[0016] A second sealing ring, which is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and sleeved on the second radial end of the piston rod;

[0017] A piston ring, which is fixedly sleeved on the radial middle part of the piston rod and forms an oil cavity between the piston ring and the first sealing ring;

[0018] A limiting ring, which is sleeved on a section of the piston rod located in the active chamber and presses and fixes the axial position of the second sealing ring;

[0019] An elastic member, one end of which is limitedly assembled in the hollow hole, and the other end of which is limitedly assembled with the wire adjustment member to elastically locate the normal position of the piston rod and provide elastic restoring force after the piston rod moves;

[0020] A wire clip terminal, the first end of which is threadedly inserted into the second end of the piston rod and is provided with a wire locking screw to fix the first end of the inner wire, and the second end of which is movably assembled in the second end of the first oil cylinder cavity or the second oil cylinder cavity;

[0021] The inner line traction controls the movement of the two driving members, so that the oil in the first oil cylinder cavity is output through the first oil outlet, and the oil in the second oil cylinder cavity is output through the second oil outlet after passing through the oil passage hole.

[0022] Optionally, a boss portion is integrally formed in the radial middle portion of the piston rod, and an annular piston groove for positioning the piston ring is formed on the boss portion.

[0023] Optionally, an annular flow channel is provided on the annular inner wall of the second oil cylinder chamber corresponding to the second sealing ring, and the annular flow channel is connected to the second oil outlet and the oil passage hole.

[0024] Optionally, two oil replenishing ports for injecting oil into the first oil cylinder cavity and the second oil cylinder cavity respectively are formed on the side wall of the upper pump body.

[0025] Optionally, the upper pump body is further provided with an oil pool mechanism for adjusting the oil pressure in the first oil cylinder cavity and the second oil cylinder cavity, and the oil pool mechanism includes:

[0026] There are two oil pool chambers, which are horizontally penetrated through the upper pump body and are arranged in parallel with the first oil cylinder chamber and the second oil cylinder chamber;

[0027] There are two oil pool holes, which are connected to the two oil pool chambers and the first oil cylinder chamber and the second oil cylinder chamber respectively, and the oil pool hole is coaxially arranged with the oil replenishing port;

[0028] Breathing pads, two in number, are disposed in the oil pool cavity and fixed to the first end of the oil pool cavity through an oil pool screw cap, so as to expand and contract in accordance with the oil pressure change to adjust the pressure in the first oil cylinder cavity and the second oil cylinder cavity;

[0029] Two sealing gaskets are disposed on the inner side of the oil sump screw cover to cooperate with the oil sump screw cover to seal the first end of the oil sump cavity;

[0030] There are two first plugging screws, which are threadedly assembled on the second end of the oil pool cavity.

[0031] Optionally, a first connecting portion is provided on one side of the upper pump body, and the first connecting portion is assembled with a second connecting portion formed at the end of the handlebar tube through bolts to clamp and fix the handlebar of the bicycle.

[0032] In a second aspect, the embodiment of the present application provides a line-pull oil disc, characterized in that it has the novel line-pull oil pressure pump described in the first aspect, and,

[0033] Brake handles, two in number, are respectively mounted on the two ends of the handlebar and are respectively connected to the second ends of the two pull wires to pull the driving member to move when the brake handle moves;

[0034] There are two oil pipes, and first ends of the oil pipes are connected to the first oil outlet and the second oil outlet respectively through oil pipe bolts;

[0035] There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to brake the disc.

[0036] Compared with the related art, the novel cable-pull hydraulic pump and cable-pull disc brake provided in the embodiment of the present application have at least the following technical effects:

[0037] By assembling it at the handlebar of the bicycle frame, on the one hand, the original clamp connector is replaced on the basis of saving space, and on the other hand, the setting of the cable adjustment piece is combined, so that the tightness of the cable can be adjusted quickly and conveniently after the upper pump body is assembled, and the advantages of the cable disc brake and the hydraulic disc brake are combined to use a smaller braking force to achieve a smooth braking effect; at the same time, the structure and active stroke of the wire clip terminal are improved, and while the oil cavity is sealed, the active stroke of the wire clip terminal is basically located in the two cylinder cavities when being pulled, further reducing the length and volume of the upper pump body and increasing the aesthetics of the installation.

[0038] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 A novel three-dimensional structure of a line-pull oil pressure upper pump according to an exemplary embodiment is shown. Figure 1 .

[0041] Figure 2 A novel three-dimensional structure of a line-pull oil pressure upper pump according to an exemplary embodiment is shown. Figure 2 .

[0042] Figure 3 is a side view of a new type of line-pull oil pressure upper pump according to an exemplary embodiment.

[0043] Figure 4 yes Figure 3 Cross-sectional view of the AA structure.

[0044] Figure 5 yes Figure 3 Cross-sectional view of the BB structure.

[0045] Figure 6 is a three-dimensional structural diagram of a driving component according to an exemplary embodiment.

[0046] Figure 7is an exploded view of a driving member structure according to an exemplary embodiment.

[0047] Figure 8 It is a three-dimensional structural diagram of an upper pump body according to an exemplary embodiment.

[0048] Description of reference numerals: upper pump body 10: first oil cylinder chamber 101, second oil cylinder chamber 102, first connecting portion 103, first oil outlet 104, second oil outlet 105, oil passage hole 106;

[0049] Driving member 20: piston rod 201, piston ring 202, wire clip terminal 203, wire locking screw 204, limit ring 205, elastic member 206, first sealing ring 207, second sealing ring 208;

[0050] Oil pipe 30;

[0051] The wire adjustment member 40 includes a plug base 401, a fine-tuning screw 402, an adjusting screw nut 403, and a spring positioning column 404;

[0052] The oil pool mechanism 50 includes an oil pool cavity 501, an oil pool hole 502, a breathing pad 503, a sealing gasket 504, an oil pool screw cover 505, and a first plug screw 506;

[0053] Second plug screw 60; oil filling port 70. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0055] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0056] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0057] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a kind of", "the" and the like involved in this application do not indicate a quantitative limitation and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0058] In the related art, the brake lower pump is generally improved, and a mechanism for pulling the oil pressure by a wire is set at the lower pump to achieve this purpose. However, the brake lower pump provided in the above-mentioned related art has the limitations of greatly increasing the volume due to the increase in structure, limited assembly space, unchanged wire length, and relatively high braking force. There is room for further improvement.

[0059] Based on the above situation, an embodiment of the present invention provides a new type of cable-pull oil pressure pump and cable-pull disc brake, which are described in detail below in conjunction with specific embodiments and drawings.

[0060] Example 1

[0061] The embodiment of the present application provides a novel wire-pulled oil pressure upper pump, which is used in conjunction with a handlebar tube of a bicycle frame. Specifically, a first connecting portion 103 is provided on one side of the upper pump body 10, and the first connecting portion 103 is assembled with a second connecting portion formed at the end of the bicycle handlebar tube by bolts to clamp and fix the bicycle handlebar. On the one hand, it replaces the original clamp connector for fixing the bicycle handlebar, and on the other hand, the novel wire-pulled oil pressure upper pump is hidden here, which can shorten the length of the pull wire in both directions and allow the oil pipe 30 to enter the vehicle body along the handlebar tube, shortening the exposed length of the oil pipe 30 and playing an effective protective role. Figure 1 A novel three-dimensional structure of a line-pull oil pressure upper pump according to an exemplary embodiment is shown. Figure 1 . Figure 2 A novel three-dimensional structure of a line-pull oil pressure upper pump according to an exemplary embodiment is shown. Figure 2 . Figure 3 FIG. 1 is a side view of a novel line-pull oil pressure upper pump according to an exemplary embodiment. Figure 1-3 As shown, the novel wire-pulled oil pressure upper pump comprises an upper pump body 10, and the upper pump body 10 has: a first oil cylinder chamber 101 and a second oil cylinder chamber 102 which are horizontally penetrated through the middle thereof and arranged in parallel; a first oil outlet 104 and a second oil outlet 105 which are radially connected to the first oil cylinder chamber 101; and an oil passage hole 106 which is coaxially arranged with the second oil outlet 105 and connects the first oil cylinder chamber 101 and the second oil cylinder chamber 102, a driving member 20 is arranged in each of the first oil cylinder chamber 101 and the second oil cylinder chamber 102, a pulling wire which pulls the driving member 20 is passed through the middle of the driving member 20, and the pulling wire comprises an inner wire and a wire tube which wraps around most of the inner wire body, and both ends of the inner wire extend out of the wire tube to be assembled with the brake handle and the driving member 20;

[0062] A wire adjustment member 40 is mounted on the first end of the first oil cylinder chamber 101 and the second oil cylinder chamber 102 close to the traction direction of the driving member 20, and the wire adjustment member 40 is sleeved on the inner wire and can be movably pushed against the end of the wire tube to adjust the tightness of the wire;

[0063] Figure 4 yes Figure 3 Cross-sectional view of the AA structure. Figure 5 yes Figure 3 Cross-sectional view of the BB structure. Figure 6 is a three-dimensional structural diagram of a driving component according to an exemplary embodiment. Figure 7 FIG. 1 is an exploded view of a driving member structure according to an exemplary embodiment. Figure 4-7 As shown, the wire adjustment member 40 includes:

[0064] The plug base 401 is hollow inside for passing the inner wire and has a first external thread section 4011 and a second external thread section 4012 arranged in sequence on the outside. The first external thread section 4011 is threadedly assembled on the first ends of the first oil cylinder cavity 101 and the second oil cylinder cavity 102;

[0065] A fine-tuning screw 402, whose thread is assembled on the second external thread section 4012, and whose first end abuts against the end of the wire tube, and the thread adjusts the position of the fine-tuning screw 402 on the second external thread section 4012 to push against the wire tube;

[0066] The adjusting nut 403 is threadably assembled on the second external thread segment 4012 and is located between the fine-tuning screw 402 and the first external thread segment 4011 to fix the position of the fine-tuning screw 402 .

[0067] Refer to the attached Figure 7In this embodiment, a hexagonal bolt portion 4013 is integrally formed at one end of the second external thread segment 4012 away from the first external thread segment 4011, so as to cooperate with a hexagonal wrench to thread the first end of the first cylinder cavity 101 and the second cylinder cavity 102 to fasten the first external thread segment 4011.

[0068] In the technical scheme of the above embodiment, during assembly, the first external thread section 4011 of the plug base 401 is threadedly fixed on the first end of the first cylinder cavity 101 and the second cylinder cavity 102, and cooperates with the positioning of the first sealing ring 207 to form an end closure of the oil cavity. At the same time, the fine-tuning screw 402 threadedly assembled on the second external thread section 4012 of the plug base 401 can be adjusted by thread, and is mainly used to push the wire tube of the outer layer of the extruded pull wire to move to the side away from the upper pump body 10, and then tighten the inner wire of the pull wire in the first cylinder cavity 101 and the second cylinder cavity 102, which is suitable for loading adjustment to achieve the use of smaller braking force and achieve a smooth braking effect. After the fine-tuning screw 402 is adjusted to the required position, the adjusting nut 403 is rotated until it abuts against the fine-tuning screw 402, thereby double-threadedly positioning the position of the fine-tuning screw 402 to maintain the brake tightness feel after the adjustment is completed.

[0069] Figure 4 yes Figure 3 Cross-sectional view of the AA structure. Figure 5 yes Figure 3 Cross-sectional view of the BB structure. Figure 6 FIG. 1 is a three-dimensional structural diagram of a driving member according to an exemplary embodiment. Figure 4-6 As shown, the driving member 20 includes:

[0070] The piston rod 201 is movably inserted in the first oil cylinder cavity or the second oil cylinder cavity, and a hollow hole for passing the inner wire is axially opened in the middle thereof;

[0071] A first sealing ring 207, which is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and sleeved on the first radial end of the piston rod 202;

[0072] The second sealing ring 208 is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and is sleeved on the second radial end of the piston rod 202; the piston ring 202 is fixedly sleeved on the radial middle part of the piston rod 201, and an oil cavity is formed between it and the first sealing ring 207; wherein, a boss portion is integrally formed in the radial middle part of the piston rod 201, and an annular piston groove for positioning the piston ring 202 is opened on the boss portion, and the piston ring 202 is assembled in the annular piston groove; and as Figure 3 As shown, two oil replenishing ports 70 are provided on the side wall of the upper pump body 10 for respectively injecting oil into the first oil cylinder chamber 101 and the second oil cylinder chamber 102, and an oil replenishing screw cap is threadedly mounted on the oil replenishing port 70 to close the oil replenishing port 70;

[0073] A limiting ring 205 is sleeved on a section of the piston rod 201 located in the active cavity and presses and fixes the axial position of the second sealing ring 208;

[0074] The elastic member 206 has one end limitedly assembled in the hollow hole, and the other end limitedly assembled with the wire adjustment member to elastically position the normal position of the piston rod 201 and provide elastic restoring force after the piston rod 201 moves; in this embodiment, the elastic member 206 can be a compression spring or a spring sheet;

[0075] The first end of the wire clip terminal 203 is threadedly inserted into the second end of the piston rod 201, and a wire locking screw 204 is provided on the wire clip terminal to fix the first end of the inner wire, and the second end of the wire clip terminal 203 is movably assembled in the second end of the first cylinder cavity 101 or the second cylinder cavity 102;

[0076] The inner line traction controls the movement of the two driving parts, so that the oil in the first cylinder chamber 101 is output through the first oil outlet 104, and the oil in the second cylinder chamber 102 is output through the second oil outlet 105 after passing through the oil passage hole.

[0077] In the technical scheme of the above embodiment, when installed on a bicycle, the brake handle, the oil pipe 30 and the brake lower pump are used in combination. Specifically, the brake handle is two in number, which are respectively mounted on the two ends of the handlebar and respectively connected to the second ends of the two pull wires to pull the driving member 20 to move when the brake handle moves; the oil pipe 30 is two in number, and its first end is respectively connected to the first oil outlet 104 and the second oil outlet 105 through the oil pipe bolt; the brake lower pump is two in number, which are respectively mounted on the front / rear wheel of the bicycle frame and are arranged in combination with the disc, and the brake lower pump is respectively connected to the second ends of the two oil pipes 30 to apply hydraulic pressure to the disc;

[0078] Refer to the attached Figure 1-4 When the brake handle on one side is squeezed and the pull wire on the lower side is pulled, the piston rod 201 moves axially in the first oil cylinder chamber 101 and drives the oil in the oil chamber to be discharged through the first oil outlet 104 through the piston ring 202, and then enters the brake lower pump at the front / rear wheel through the oil pipe 30. The brake lower pump clamps the disc of the front / rear wheel to perform hydraulic braking, the oil circuit is smooth, and the braking is stable;

[0079] When the brake handle on the other side is squeezed and the pull wire on the upper side is pulled, the piston rod 201 moves axially in the second oil cylinder chamber 102 and drives the oil in the oil chamber through the piston ring 202 to enter the annular flow channel 2083 through the oil path hole 106 and then reach the second oil outlet 105 for output, and then enters the brake lower pump at the front / rear wheel through the oil pipe 30. The brake lower pump clamps the disc of the front / rear wheel for hydraulic braking, the oil path is smooth, and the braking is stable;

[0080] At the same time, it can be understood that the limiting ring 205 cooperates with the assembly of the second sealing ring 208 so that when the wire clip terminal 203 is pulled, its movable stroke is basically located inside the second end of the first cylinder cavity 101 and the second cylinder cavity 102, further reducing the length and volume of the upper pump body and increasing the aesthetics of the installation.

[0081] Furthermore, a spring positioning column 404 is also provided inside the plug base 401, and the other end of the spring positioning column 404 is inserted into the elastic member 206 to avoid deformation of the elastic member 206 when the piston rod 201 moves, thereby hindering the braking stroke of the piston rod 201; it can be easily understood that the other end of the spring positioning column 404 can extend into the hollow hole of the piston rod 201, and can also have a certain gap with the piston rod 201, and the size of this gap does not exceed the width of one circle of the elastic member 206 (compression spring) under normal conditions.

[0082] like Figure 3 As shown, in this embodiment, an annular flow channel is opened on the annular inner wall of the second cylinder chamber 102 corresponding to the second sealing ring 208, and the annular flow channel is connected to the second oil outlet 105 and the oil passage hole 106.

[0083] Specifically, in this embodiment, refer to the attached Figure 4 Since the oil path between the first oil cylinder cavity 101 and the first oil outlet 104 is short, there is no need to set an annular flow channel externally, so the overall length of the first sealing ring 207 in the first oil cylinder cavity 101 is shortened, and the limiting ring 205 is directly threadedly assembled with the movable cavity of the first oil cylinder cavity 101. More specifically, the limiting ring 205 in the first oil cylinder cavity 101 has an external thread, and the limiting ring 205 is threadedly assembled with the internal thread provided on the inner wall of the first oil cylinder cavity 101;

[0084] The second cylinder chamber 102 and the second oil outlet 105 are separated by the first cylinder chamber 101. It is necessary to consider that the oil enters the annular flow channel through the oil path hole 106 and then reaches the second oil outlet 105. Therefore, it is necessary to first consider forming an annular flow channel at the position of the first cylinder chamber 101 corresponding to the second sealing ring 208, and secondly, extend the structural design of the second sealing ring 208 so as not to affect the oil path during traction. Therefore, considering the active stroke of the piston rod 201 and the length of the sealing ring 205 comprehensively, an annular flow channel is opened on the annular inner wall of the second cylinder chamber 102 corresponding to the second sealing ring 208 to achieve the fixation of the piston limiter and the closure of the first end of the second cylinder chamber 102.

[0085] In summary, the new type of cable-pull hydraulic upper pump provided by the embodiment of the present invention is assembled at the handlebar of the bicycle frame. On the one hand, it replaces the original clamp connector on the basis of saving space. On the other hand, it combines the setting of the cable adjustment member 40, which can quickly and conveniently adjust the tightness of the cable after the upper pump body is assembled. It combines the advantages of cable-pull disc brakes and hydraulic disc brakes, uses a smaller braking force, and achieves a smooth braking effect. At the same time, the structure and active stroke of the wire clip terminal 203 are improved. While sealing the oil chamber, the active stroke of the wire clip terminal 203 during traction is basically located in the first cylinder chamber 101 and the second cylinder chamber 102, further reducing the length and volume of the upper pump body and increasing the installation aesthetics.

[0086] Example 2

[0087] The difference between the second embodiment of the present invention and the first embodiment is that the upper pump body 10 is further provided with an oil pool mechanism 50 for adjusting the oil pressure in the first oil cylinder chamber 101 and the second oil cylinder chamber 102. Figure 5 yes Figure 3 Cross-sectional view of the BB structure. Figure 6 is a three-dimensional structural diagram of a driving component according to an exemplary embodiment. Figure 7 is an exploded view of a driving member structure according to an exemplary embodiment. Figure 8 FIG. 1 is a three-dimensional structural diagram of an upper pump body according to an exemplary embodiment. Figure 5-8 , the oil pool mechanism 50 comprises:

[0088] There are two oil pool chambers 501, which are horizontally penetrated through the upper pump body 10 and are arranged in parallel with the first oil cylinder chamber 101 and the second oil cylinder chamber 102;

[0089] There are two oil pool holes 502, which are connected to the two oil pool chambers 501 and the first oil cylinder chamber 101 and the second oil cylinder chamber 102 respectively, and the oil pool hole 501 is coaxially arranged with the oil replenishing port 70;

[0090] There are two breathing pads 503, which are arranged in the oil pool cavity 501 and fixed to the first end of the oil pool cavity 501 through the oil pool screw cover 505, so as to expand and contract in accordance with the change of oil pressure and adjust the pressure in the first cylinder cavity 101 and the second cylinder cavity 102; specifically, the breathing pad 503 is U-shaped as a whole, one end of which is open and is sleeved on the open end of the oil filling port, and the other end extends into the oil pool cavity 501 to form a sealed continuous cavity bag that is elastically compressed as the oil pressure increases and elastically reset as the oil pressure decreases.

[0091] Two sealing gaskets 504 are disposed on the inner side of the oil sump screw cover 505 to cooperate with the oil sump screw cover 505 to seal the first end of the oil sump cavity 501;

[0092] There are two first plug screws 506 , which are threadedly assembled on the second end of the oil pool cavity 501 .

[0093] In summary, the novel wire-pull hydraulic upper pump provided by the embodiment of the present invention has two oil pool chambers 501 for adjusting the oil pressure of the first cylinder chamber 101 and the second cylinder chamber 102 respectively arranged on the upper pump body 10, and a breathing pad 503 which expands and contracts to match the oil pressure change is provided in the oil pool chamber 501. When braking, the oil conducts the heat of the brake pad and expands due to the heat. The expanded oil enters the two oil pool chambers 501 through the oil pool holes 502 and compresses the breathing pad 503. When the oil temperature drops, it automatically flows back to the first cylinder chamber 101 and the second cylinder chamber 102 where the pressure is reduced. In this way, the oil pressure in the first cylinder chamber 101 and the second cylinder chamber 102 during braking is adjusted, the risk of disc locking is effectively avoided, and the stable braking effect of the hydraulic disc brake is maintained and optimized.

[0094] Example 3

[0095] Embodiment 3 of the present invention provides a line-pull oil disc, which has the novel line-pull oil pressure pump of the above-mentioned embodiments 1-2, and,

[0096] Brake handles, two in number, are respectively mounted on both ends of the handlebar and are respectively connected to the second ends of the two pull wires to pull the driving member 20 to move when the brake handles move;

[0097] There are two oil pipes 30, and the first ends thereof are connected to the first oil outlet 104 and the second oil outlet 105 respectively through oil pipe bolts;

[0098] There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and matched with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes 30 to brake the disc.

[0099] Furthermore, the handlebars of road bikes are mostly curved handlebars, the purpose of which is to lower the upper body to reduce wind resistance. Due to limited installation space on the curved handlebars, cable disc brake handles are often provided, which does not provide a good user experience. The cable-pull oil disc provided in Example 3 of the present invention can fully adapt to the oil disc requirements of the cable disc brake handle, use a smaller braking force, and achieve a smooth braking effect. At the same time, flat-handle road bikes have also appeared on the market. The cable-pull oil disc provided in Example 3 of the present invention can also fully adapt to flat-handle road bikes, combining the advantages of cable-pull disc brakes and hydraulic disc brakes.

[0100] The cable-pull oil disc provided in Example 3 of the present invention is assembled at the handlebar of a bicycle frame. On the one hand, it replaces the original clamp connector on the basis of saving space. On the other hand, it combines the setting of the cable adjustment member 40, which can quickly and conveniently adjust the tightness of the cable after the upper pump body is assembled. It combines the advantages of cable-pull disc brakes and hydraulic disc brakes, uses a smaller braking force, and achieves a smooth braking effect. At the same time, the structure and active stroke of the cable buckle terminal 203 are improved. While sealing the oil chamber, the active stroke of the cable buckle terminal 203 during traction is basically located in the first cylinder chamber 101 and the second cylinder chamber 102, further reducing the length and volume of the upper pump body and increasing the installation aesthetics.

[0101] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible new types of the technical features in the above embodiments are described. However, as long as there are no contradictions in the new types of these technical features, they should be considered to be within the scope of this specification.

[0102] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A novel wire-pull hydraulic upper pump, which is used in conjunction with a handlebar of a bicycle frame, comprises an upper pump body, and the upper pump body has: a first oil cylinder cavity and a second oil cylinder cavity horizontally penetrating the middle thereof and arranged in parallel; a first oil outlet and a second oil outlet radially connected to the first oil cylinder cavity; and an oil passage hole coaxially arranged with the second oil outlet and connecting the first oil cylinder cavity and the second oil cylinder cavity, characterized in that: A driving member is provided in each of the first oil cylinder cavity and the second oil cylinder cavity, a pulling wire is passed through the middle of the driving member to pull the driving member to move, and the pulling wire includes an inner wire and a wire tube wrapped around the inner wire; A wire adjustment member is mounted on the first end of the first oil cylinder cavity and the second oil cylinder cavity close to the traction direction of the driving member, and the wire adjustment member is sleeved on the inner wire and can be movably pushed against the end of the wire tube to adjust the tightness of the wire.

2. The novel line-pull oil pressure pump according to claim 1 is characterized in that: The wire adjustment member comprises: A plug base, the interior of which is hollow for passing the inner wire and the exterior of which is arranged in sequence with a first external thread segment and a second external thread segment, wherein the first external thread segment is threadably assembled on the first end; A fine-tuning screw, whose thread is assembled on the second external thread segment, and whose first end abuts against the end of the wire tube, and the position of the fine-tuning screw on the second external thread segment is adjusted by thread to push against the wire tube; The adjusting nut is threadably assembled on the second external thread segment and is located between the fine-tuning screw and the first external thread segment to fix the position of the fine-tuning screw.

3. The novel wire-pull oil pressure pump according to claim 2 is characterized in that: A hexagonal bolt portion is integrally formed at one end of the second external thread segment away from the first external thread segment, so as to cooperate with a tool to thread-fasten the first external thread segment and the first end.

4. The novel line-pull oil pressure pump according to claim 1 is characterized in that: The driving member comprises: A piston rod is movably inserted in the first oil cylinder cavity or the second oil cylinder cavity, and a hollow hole for passing the inner line is axially opened in the middle thereof; A first sealing ring, which is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and sleeved on the first radial end of the piston rod; A second sealing ring, which is positioned and assembled in the first oil cylinder cavity or the second oil cylinder cavity and sleeved on the second radial end of the piston rod; A piston ring, which is fixedly sleeved on the radial middle part of the piston rod and forms an oil cavity between the piston ring and the first sealing ring; A limiting ring, which is sleeved on a section of the piston rod located in the active chamber and presses and fixes the axial position of the second sealing ring; An elastic member, one end of which is limitedly assembled in the hollow hole, and the other end of which is limitedly assembled with the wire adjustment member to elastically locate the normal position of the piston rod and provide elastic restoring force after the piston rod moves; A wire clip terminal, the first end of which is threadedly inserted into the second end of the piston rod and is provided with a wire locking screw to fix the first end of the inner wire, and the second end of which is movably assembled in the second end of the first oil cylinder cavity or the second oil cylinder cavity; The inner line traction controls the movement of the two driving members, so that the oil in the first oil cylinder cavity is output through the first oil outlet, and the oil in the second oil cylinder cavity is output through the second oil outlet after passing through the oil passage hole.

5. The novel wire-pull oil pressure pump according to claim 4 is characterized in that: A boss portion is integrally formed in the radial middle portion of the piston rod, and an annular piston groove for positioning the piston ring is formed on the boss portion.

6. The novel wire-pull oil pressure pump according to claim 4 is characterized in that: An annular flow channel is provided on the annular inner wall of the first oil cylinder chamber corresponding to the second sealing ring, and the annular flow channel is connected with the second oil outlet and the oil passage hole.

7. The novel wire-pull oil pressure pump according to claim 2 is characterized in that: Two oil replenishing ports for respectively injecting oil into the first oil cylinder cavity and the second oil cylinder cavity are arranged on the side wall of the upper pump body.

8. The novel wire-pull oil pressure pump according to claim 7 is characterized in that: The upper pump body is also provided with an oil pool mechanism for adjusting the oil pressure in the first oil cylinder cavity and the second oil cylinder cavity, and the oil pool mechanism includes: There are two oil pool chambers, which are horizontally penetrated through the upper pump body and are arranged in parallel with the first oil cylinder chamber and the second oil cylinder chamber; There are two oil pool holes, which are connected to the two oil pool chambers and the first oil cylinder chamber and the second oil cylinder chamber respectively, and the oil pool hole is coaxially arranged with the oil replenishing port; Breathing pads, two in number, are disposed in the oil pool cavity and fixed to the first end of the oil pool cavity through an oil pool screw cap, so as to expand and contract in accordance with the oil pressure change to adjust the pressure in the first oil cylinder cavity and the second oil cylinder cavity; Two sealing gaskets are disposed on the inner side of the oil sump screw cover to cooperate with the oil sump screw cover to seal the first end of the oil sump cavity; There are two first plugging screws, which are threadedly assembled on the second end of the oil pool cavity.

9. The novel wire-pull oil pressure pump according to claim 1 is characterized in that: A first connection portion is provided on one side of the upper pump body, and the first connection portion is assembled with a second connection portion formed at the end of the handlebar tube through bolts to clamp and fix the handlebar of the bicycle.

10. A wire-pulled oil disc, characterized in that: A novel line-pull oil pressure pump according to any one of claims 1 to 9, and Brake handles, two in number, are respectively mounted on the two ends of the handlebar and are respectively connected to the second ends of the two pull wires to pull the driving member to move when the brake handle moves; There are two oil pipes, and first ends of the oil pipes are connected to the first oil outlet and the second oil outlet respectively through oil pipe bolts; There are two brake lower pumps, which are respectively mounted on the front / rear wheels of the bicycle frame and arranged in conjunction with the disc, and the brake lower pumps are respectively connected to the second ends of the two oil pipes to brake the disc.

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