Holding moment sectional type brake handle and wire pulling disc brake

Abstract

The utility model relates to a holding moment sectional type brake handle and a wire pulling disc brake. The holding moment sectional type brake handle is matched with a handle bar of a bicycle for use, and comprises a brake handle seat, a handle bar, a handle bar, a handle bar and a handle bar, the holding torque brake handle is movably assembled on the brake handle seat and at least comprises a brake handle piece, a tooth bottom plate piece, a tooth cover plate piece, an upper pin shaft and a lower rotating shaft; the first end of the pull wire is connected with the brake handle part; and when the brake handle part is held by a rider, the brake handle part is driven to move in two sections along the lower rotating shaft and the upper pin shaft in sequence, so that the pull wire is quickly tensioned under the first section of holding torque, and large brake pulling force is provided under the second section of holding torque. According to the cable-pulling disc brake, the convenient assembly requirement and the braking requirement of the disc brake are effectively considered, the braking hand feeling of the cable-pulling disc brake of the bicycle is effectively improved, and the braking comfort of a rider is improved.

Description

Technical Field

[0001] The present application relates to the field of bicycles, and in particular to a segmented brake handle and a cable-pull disc brake. Background Art

[0002] There are currently two control transmission methods for disc brakes, namely cable disc brakes and hydraulic disc brakes. Hydraulic disc brakes are more expensive, so they are mostly installed on high-end bicycles or professional racing bikes. Compared with hydraulic disc brakes, cable disc brakes have a simpler structure and lower cost. Limited by the production cost of bicycles, cable disc brakes are still widely installed and used on bicycles.

[0003] When assembling the cable-operated disc brakes currently on the market, a sufficient gap needs to be left between the brake pad and the disc to facilitate installation. If a brake handle with a large cable travel is used for assembly, the corresponding lever ratio is small. Although it can be adapted to a large gap for easy installation, it will lead to insufficient braking force of the brake pad; on the contrary, if the gap is reduced and a brake handle with a small cable travel is used for assembly, the corresponding lever ratio is large, which meets the braking force, but the assembly and adjustment of the vehicle factory is relatively difficult, and the brake handle has a soft feel, which is a poor experience.

[0004] The above-mentioned cable-operated disc brake solutions in the related art all have limitations, resulting in poor performance of the cable-operated disc brake in terms of ease of assembly on a bicycle and balance of braking force, and there is room for further improvement. Utility Model Content

[0005] The embodiments of the present application provide a segmented brake handle with a grip torque and a cable-pull disc brake to at least solve the problem that the cable-pull disc brake solutions in the related art have limitations, resulting in poor results in balancing the ease of assembly and braking force requirements of the cable-pull disc brake on a bicycle.

[0006] In a first aspect, an embodiment of the present application provides a segmented brake handle, which is used in conjunction with a handlebar of a bicycle, and includes:

[0007] A brake handle seat, which is mounted on the handlebar and has a movable cavity inside;

[0008] A grip brake handle, which is movably mounted on the brake handle seat, at least comprises a brake handle member, a tooth bottom plate member, a tooth cover plate member, an upper pin shaft and a lower rotating shaft, wherein the brake handle member at least comprises a brake handle portion for the rider to hold and a driving portion that moves in the movable cavity, wherein the brake handle member is movably mounted on the brake handle seat via the upper pin shaft, and the tooth bottom plate member and the tooth cover plate member are movably mounted on both sides of the driving portion respectively;

[0009] A pull wire, a first end of which is connected to the brake handle;

[0010] When the brake handle is held by the rider, the brake handle is driven to move in two stages along the lower rotating shaft and the upper pin shaft in sequence so that the pull wire is quickly tensioned under the first gripping moment and a large braking force is provided under the second gripping moment.

[0011] In some embodiments, the brake handle also includes:

[0012] A pin shaft movable groove is in an arc strip shape and is opened on the upper part of the driving part to movably penetrate the upper pin shaft, and the upper pin shaft is located on a side of the pin shaft movable groove close to the brake handle part in a non-gripping state;

[0013] A lower shaft groove is provided at the lower part of the driving part to rotatably pass through the lower shaft;

[0014] The brake handle shaft connecting tooth is integrally formed on both sides of the lower end of the driving part and is arranged in an arc shape with the lower rotating shaft groove as the axis. The two free ends of the brake handle shaft connecting tooth are respectively the first shaft connecting tooth and the second shaft connecting tooth.

[0015] In some of the embodiments, the lower ends of the tooth bottom plate and the tooth cover plate are respectively rotatably assembled with the two brake handle shaft teeth, and movable shaft teeth are integrally formed on both sides of the lower ends of the tooth bottom plate and the tooth cover plate, and in a non-holding state, the movable shaft teeth on one side and the first shaft teeth have a rotational clearance that matches the movable path of the upper pin shaft in the movable groove of the pin shaft, and the movable shaft teeth on the other side are abutted and assembled with the second shaft teeth.

[0016] In some embodiments, the tooth bottom plate comprises:

[0017] A bottom plate, disposed in the movable cavity and assembled on one side of the driving part;

[0018] A lower rotating shaft is fixed to a side of the lower part of the bottom plate close to the driving part, and a free end of the lower rotating shaft passes through the lower rotating shaft groove and is rotatably assembled with the lower rotating shaft groove;

[0019] A first pin hole is provided on the upper portion of the bottom plate for passing an upper pin;

[0020] The positioning pin is integrally formed on one side of the base plate close to the driving part, and the free end of the positioning pin extends into a positioning groove provided on the driving part and is elastically positioned on one side of the positioning groove close to the brake handle part by a small compression spring.

[0021] In some embodiments, the tooth cover plate comprises:

[0022] A cover plate, disposed in the movable cavity and assembled on a side of the driving part away from the bottom plate;

[0023] A hexagonal locking groove is provided on one side of the lower part of the cover plate close to the driving part, which is engaged with the hexagonal locking part formed at the free end of the lower rotating shaft and cooperates with the assembly screws to fix the gear cover plate and the gear bottom plate;

[0024] A second pin hole is provided on the upper portion of the cover plate to pass an upper pin;

[0025] A torsion spring assembly portion is arranged on the side of the cover plate away from the driving portion and is equipped with a torsion spring whose torsion axis coincides with the second pin shaft hole. One free end of the torsion spring abuts against a torsion spring buckle portion fixed on the inner wall of the active cavity, and the other free end abuts against the torsion spring assembly portion to provide an elastic restoring force to the torque brake handle.

[0026] In some embodiments, a cylindrical step for positioning and assembling the torsion spring torsion axis is integrally formed at a position of the torsion spring assembly portion corresponding to the second pin shaft hole.

[0027] In some of the embodiments, both ends of the brake handle seat body corresponding to the movable cavity are provided with pin fixing holes for fixing the two free ends of the upper pin.

[0028] In some embodiments, the brake handle seat includes:

[0029] The brake handle seat body has an opening on one side for assembling the movable cavity of the driving part;

[0030] A tightening buckle is arranged on one side of the brake handle seat body to cover and fix the brake handle seat body on the handlebar;

[0031] A threading pin is arranged on the other side of the brake handle seat body to thread the pull wire and limit the movement trajectory of the pull wire.

[0032] In some of the embodiments, both free ends of the pull wire are fixed with pull wire terminals, and the pull wire terminals are fixedly assembled in the pull wire buckle grooves provided on the brake handle.

[0033] In a second aspect, the utility model provides a wire-pull disc brake having a segmented brake handle as described in the first aspect, and:

[0034] The brake pump is mounted on the front / rear wheel of the bicycle frame and is arranged in conjunction with the disc. The brake pump is connected to the second end of the pull cable to drive the brake pads in the brake pump to clamp and brake the disc in sections when the torque segmented brake handle is gripped.

[0035] Compared with the related art, the segmented brake handle and the cable-pull disc brake provided by the embodiment of the present application have at least the following technical effects:

[0036] By setting two rotation axes, the lower rotating shaft and the upper pin shaft, when the brake handle is held by the rider, the brake handle is driven to rotate along the lower rotating shaft first and then along the upper pin shaft, and the gripping torque is divided into two sections so that the cable has a small pulling force and a large stroke in the first section of the gripping torque, thereby quickly tensioning, and a large pulling force and a small stroke in the second section of the gripping torque, thereby providing a large braking pulling force; when applied to the cable-pull disc brake of a bicycle, the brake pads of the brake lower pump are quickly approached to the disc in the first section of the gripping torque, and the output force is small and does not affect the braking effect; the brake pads of the brake lower pump are forced to press the disc in the second section of the gripping torque to meet the large braking torque requirement; the two-section gripping torque effectively takes into account the needs of convenient assembly of the disc brake and large braking force braking, effectively improves the braking feel of the bicycle cable-pull disc brake, and improves the braking comfort of the rider.

[0037] 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

[0038] 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:

[0039] Figure 1 is a three-dimensional structural diagram of a grip-torque segmented brake handle according to an exemplary embodiment;

[0040] Figure 2 is an exploded view of a grip-torque segmented brake handle structure according to an exemplary embodiment;

[0041] Figure 3 is a schematic diagram of the combined structure of a brake handle, a gear bottom plate and a gear cover plate according to an exemplary embodiment;

[0042] Figure 4 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 1 ;

[0043] Figure 5 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 2 ;

[0044] Figure 6 The first change state of the grip torque segmented brake handle is shown according to an exemplary embodiment. Figure 1 ;

[0045] Figure 7 The first change state of the grip torque segmented brake handle is shown according to an exemplary embodiment. Figure 2 ;

[0046] Figure 8is a diagram showing a second changing state of a grip-torque segmented brake handle according to an exemplary embodiment.

[0047] In the figure: brake handle seat 10: brake handle seat body 101, tightening lock buckle 102, threading pin 103, pin fixing hole 104, torsion spring buckle portion 105;

[0048] Grip brake handle 20:

[0049] Brake handle 201: brake handle portion 2011, cable buckle groove 2012, driving portion 2013, pin shaft movable groove 2014, positioning groove 2015, lower shaft groove 2016, brake handle shaft connecting teeth 2017;

[0050] Gear bottom plate 202: bottom plate 2021, lower rotating shaft 2022, hexagonal locking portion 2023, first pin shaft hole 2024, positioning pin 2025;

[0051] Gear cover plate 203: cover plate 2031, hexagonal locking groove 2032, torsion spring assembly portion 2033, second pin shaft hole 2034;

[0052] Upper pin 204; assembly screw 205; torsion spring 206; movable shaft connecting tooth 207;

[0053] Put the horizontal bar 30;

[0054] Pull wire 40: pull wire terminal 401. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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", "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; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, 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 before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0059] In the related art, when assembling the cable-operated disc brakes currently on the market, a sufficient gap needs to be left between the brake pad and the disc to facilitate installation. If a brake handle with a large cable travel is used for assembly, the corresponding lever ratio is small. Although it can be adapted to a large gap to facilitate installation, it will lead to insufficient braking force of the brake pad; on the contrary, if the gap is reduced and a brake handle with a small cable travel is used for assembly, the corresponding lever ratio is large, which meets the braking force, but the assembly and adjustment of the vehicle factory is relatively difficult, and the brake handle has a soft feel, which is a poor experience.

[0060] Based on the above situation, an embodiment of the utility model provides a segmented brake handle with a grip torque and a cable-pull disc brake, which are described in detail below in conjunction with specific embodiments and drawings.

[0061] Example 1

[0062] The utility model embodiment provides a brake handle with segmented grip. Figure 1 It is a three-dimensional structural diagram of a segmented brake handle according to an exemplary embodiment. Figure 2 is an exploded view of a grip-torque segmented brake handle structure according to an exemplary embodiment. Figure 3 FIG. 1 is a schematic diagram of the combined structure of a brake handle, a gear bottom plate and a gear cover plate according to an exemplary embodiment. Figure 1-3 As shown, the grip-segmented brake handle is used in conjunction with a handlebar 30 of a bicycle. Figure 1-3 The grip-type segmented brake handle comprises:

[0063] The brake handle seat 10 is mounted on the handlebar 30 and has an active cavity therein, wherein the brake handle seat 10 comprises: a brake handle seat body 101, one side of which is opened with an active cavity for mounting the driving part 2013; a tightening buckle 10, which is arranged on one side of the brake handle seat body 101 to be sleeved and fixed to the handlebar 30; a threading pin 103, which is arranged on the other side of the brake handle seat body 101 to pass the cable 40 and limit the movement trajectory of the cable 40;

[0064] The grip brake handle 20 is movably mounted on the brake handle seat 10, and at least comprises a brake handle member 201, a tooth bottom plate member 202, a tooth cover plate member 203, an upper pin shaft 204 and a lower rotating shaft 2022. The brake handle member 201 at least comprises a brake handle portion 2011 for the rider to hold and a driving portion 2013 that moves in a movable cavity. The brake handle member 201 is movably mounted on the brake handle seat 10 through the upper pin shaft 204. The tooth bottom plate member 202 and the tooth cover plate member 203 are movably mounted on both sides of the driving portion 2013 respectively.

[0065] In this embodiment, refer to the attached Figure 3The brake handle 201 includes a brake handle portion 2011 for the rider to hold and a driving portion 2013 movable in the movable cavity, and also includes: a pin movable groove 2014, which is in an arc strip shape and is opened at the upper part of the driving portion 2013 to movably penetrate the upper pin 204, and the upper pin 204 is located on the side of the pin movable groove 2014 close to the brake handle portion 2011 in a non-holding state; a lower rotating shaft groove 2016, which is opened at the lower part of the driving portion 2013 to rotatably penetrate the lower rotating shaft 2022; a brake handle shaft connecting tooth 2017, which is integrally formed on both sides of the lower end of the driving portion 2013 and is connected to the lower rotating shaft groove 20 16 is an arc-shaped axis arrangement, and the two free ends of the brake handle shaft connecting tooth 2017 are respectively the first shaft connecting tooth and the second shaft connecting tooth; the lower ends of the tooth bottom plate 202 and the tooth cover plate 203 are respectively rotatably assembled with the two brake handle shaft connecting teeth 2017, and both sides of the lower ends of the tooth bottom plate 202 and the tooth cover plate 203 are integrally formed with movable shaft connecting teeth 207, and in a non-holding state, the movable shaft connecting tooth 207 on one side and the first shaft connecting tooth have a rotational clearance that matches the movable path of the upper pin 204 in the pin movable groove 2014, and the movable shaft connecting tooth 207 on the other side is abutted and assembled with the second shaft connecting tooth.

[0066] In this embodiment, Figure 4 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 1 . Figure 5 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 2 . Refer to the attached Figure 1-5 The tooth bottom plate 202 includes: a bottom plate 2021, which is arranged in the movable cavity and assembled on one side of the driving part 2013; a lower rotating shaft 2022, which is fixed to the lower part of the bottom plate 2021 near the driving part 2013, and the free end of the lower rotating shaft 2022 passes through the lower rotating shaft groove 2016 and is rotatably assembled with the lower rotating shaft groove 2016; a first pin shaft hole 2024, which is opened on the upper part of the bottom plate 2021 to pass the upper pin shaft 204; a positioning pin 2025, which is integrally formed on one side of the bottom plate 2021 near the driving part 2013, and the free end of the positioning pin 2025 extends into the positioning groove 2015 opened on the driving part 2013 and is elastically positioned on the side of the positioning groove 2015 near the brake handle part 2011 through a small compression spring;

[0067] In this embodiment, refer to the attached Figure 1-5The tooth cover plate 203 includes: a cover plate 2031, which is arranged in the active cavity and assembled on the side of the driving part 2013 away from the bottom plate 2021; a hexagonal locking groove 2032, which is opened on the side of the lower part of the cover plate 2031 close to the driving part 2013, and is clamped and assembled with the hexagonal locking part 2023 formed at the free end of the lower rotating shaft 2022 and cooperates with the assembly screw 205 to fix the tooth cover plate 203 and the tooth bottom plate 202; a second pin hole 20 34, opened on the upper part of the cover plate 2031 to pass the upper pin shaft 204; the torsion spring assembly part 2033, arranged on the side of the cover plate 2031 away from the driving part 2013 and equipped with a torsion spring 206 whose torsion axis coincides with the second pin shaft hole 2034, one free end of the torsion spring 206 abuts against the torsion spring buckle part 105 fixed on the inner wall of the active cavity, and the other free end abuts against the torsion spring assembly part 2033 to provide elastic restoring force to the grip brake handle 20;

[0068] The first end of the pull wire 40 passes through the threading pin 103 and limits the movement trajectory of the pull wire 40 and is connected to the brake handle 2011;

[0069] When the brake handle 2011 is held by the rider, the brake handle 201 is driven to move in two stages along the lower rotating shaft 2022 and the upper pin shaft 204 in sequence so that the cable 40 is quickly tightened under the first gripping moment and provides a large braking force under the second gripping moment.

[0070] In the technical solution of the above embodiment, Figure 4 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 1 ; Figure 5 The initial state of the grip torque segmented brake handle according to an exemplary embodiment is shown Figure 2 ; Figure 6 The first change state of the grip torque segmented brake handle is shown according to an exemplary embodiment. Figure 1 ; Figure 7 The first change state of the grip torque segmented brake handle is shown according to an exemplary embodiment. Figure 2 ; Figure 8 FIG. 2 is a diagram showing a second change state of a grip torque segmented brake handle according to an exemplary embodiment. Figure 4-8 , specifically:

[0071] In the initial state, refer to the attached Figure 4-5, the lower rotating shaft 2022 passes through the lower rotating shaft groove 2016 and is rotatably assembled with the lower rotating shaft groove 2016, and the hexagonal locking portion 2023 at the free end of the lower rotating shaft 2022 is engaged with the hexagonal locking groove 2032 and cooperates with the assembly screw 205 to fix the tooth cover plate 203 and the tooth bottom plate 202; the upper pin shaft 204 passes through the first pin shaft hole 2024, the pin shaft movable groove 2014 and the second pin shaft hole 2034 in sequence, and the left end of the pin shaft movable groove 2014 contacts the upper pin shaft 204; the small compression spring is accommodated in the positioning groove 2015 opened on the driving part 2013 and elastically positions the positioning pin 202 of the tooth bottom plate 202 25; At this time, the preload force of the torsion spring 206 on the tooth cover plate 203 pushes the brake handle 201 to rotate counterclockwise around the upper pin shaft 204 until it abuts against the brake handle seat 10 for positioning, and at the same time, the preload force of the small compression spring pushes the positioning pin 2025 to be located on the side of the positioning groove 2015 close to the brake handle portion 2011. At this time, the upper pin shaft 204 is located on the side of the pin shaft movable groove 2014 close to the brake handle portion 2011, and there is a maximum angle of rotation gap a between the movable shaft connecting tooth 207 on the left and the first shaft connecting tooth, and the movable shaft connecting tooth 207 on the other side is abutted and assembled with the second shaft connecting tooth, and the brake handle 201 is in the maximum grip state.

[0072] In the first change state, refer to the attached Figure 6-7 , the brake handle 201 is pressed, and the gripping force F1 applied by the rider drives the brake handle 201 to rotate clockwise around the lower rotating shaft 2022, and the rotation gap a gradually decreases until the movable shaft connecting tooth 207 on the left side abuts against the first shaft connecting tooth, and the rotation gap a=0, and the rotation gap b generated between the movable shaft connecting tooth 207 on the right side and the second shaft connecting tooth reaches the maximum angle value, and the pin shaft movable groove 2014 and the positioning groove 2015 are displaced with the movement of the brake handle 201, and the pin shaft movable groove 2014 moves to the left end to contact the upper pin shaft 204, and the small compression spring is also compressed to the shortest state under the abutment of the positioning pin 2025, and in this process, the cable 40 is quickly tensioned;

[0073] The torque of a brake handle 201 is: F1×R1=F2×R2;

[0074] The tension F2 of a cable is: F2 = F1 × R1 / R2

[0075] A wire pulling stroke L1 is: L1 = R2 × b;

[0076] Among them, F1 is a section of gripping force applied by the rider; F2 is a section of cable pulling force; R1 is a section of gripping force F1 applied by the rider relative to the first axial force arm; R2 is a section of cable pulling force F2 relative to the first axial force arm; L1 is a section of cable pulling stroke; b is the rotation gap angle generated between the right side movable shaft connecting tooth 207 and the second shaft connecting tooth; refer to the attached Figure 6, since R2 is designed with a large pivot radius and R1 < R2, it can be calculated that F2 < F1; therefore, this section of the action in the first change state has the characteristics of a small pulling force F2 of the first cable and a large stroke L1 of the first cable.

[0077] In the second change state, referring to the appendix Figure 8 , continue to apply the force on the brake lever 201. Since the movable shaft connecting tooth 207 on the left abuts against the first shaft connecting tooth, the rotation gap a = 0, and the pin shaft movable groove 2014 moves to the left end to contact the pin shaft 204, and the small compression spring has been compressed to the shortest state, so there is no relative movement between the brake lever 201, the tooth cover plate 203 and the tooth bottom plate 202; the brake lever 201 drives the tooth cover plate 203 and the tooth bottom plate 202 to rotate together around the upper pin shaft 204 under the second holding force F1 applied by the rider, jointly compressing the torsion spring 206, and the torsion angle c of the torsion spring 206 gradually increases. During this process, the cable 40 provides a large braking force;

[0078] The moment of the second brake lever 201: F3 × R4 = F1 × R3

[0079] The second cable pulling force F3 is: F3 = F1 × R3 / R4

[0080] The second cable stroke L2 is: L2 = R4 × c

[0081] Among them, F1 is the second holding force applied by the rider; F3 is the second cable pulling force; R3 is the second axis force arm relative to the second holding force F1 applied by the rider; R4 is the second axis force arm relative to the second cable pulling force F3; L2 is the second cable stroke; c is the torsion angle of the torsion spring 206; referring to the appendix Figure 8 , since R3 > R1 and R4 < R2, it can be calculated that: F3 > F2 and L2 < L1; therefore, this section of the action in the second change state has the characteristics of a large pulling force F3 of the second cable and a small stroke L2 of the second cable.

[0082] At the same time, it can be understood that when the rider releases the brake lever 201, the elastic restoring force of the small compression spring pushes the brake lever 201 to rotate counterclockwise along the lower pivot shaft 2022 until the rotation gap a between the movable shaft connecting tooth 207 on the left and the first shaft connecting tooth resumes the maximum value, and a rotation gap b = 0 is generated between the movable shaft connecting tooth 207 on the right and the second shaft connecting tooth. The elastic torsional force of the torsion spring 206 pushes the combination of the brake lever 201, the tooth cover plate 203 and the tooth bottom plate 202 to rotate counterclockwise along the upper pin shaft 204 until the brake lever 201 returns to紧靠 the brake seat 10 position.

[0083] Optionally, referring to the appendix Figure 3The torsion spring assembly portion 2033 is integrally formed with a cylindrical step corresponding to the position of the second pin shaft hole 2034 for positioning and assembling the torsion spring 206 torsional axis, thereby effectively ensuring that the torsion spring 206 is positioned by the cylindrical step during elastic torsion, thereby improving the elastic stability of the torsion.

[0084] Optionally, refer to the attached Figure 1 The two ends of the brake handle seat body 101 corresponding to the active cavity are provided with pin fixing holes 104 for fixing the two free ends of the upper pin 204 for fixing and assembling the upper pin 204 .

[0085] Optionally, refer to the attached Figure 2 , both free ends of the pull wire 40 are fixed with a pull wire terminal 401, and the pull wire terminal 401 at the first end is fixedly assembled in the pull wire buckle groove 2012 opened on the brake handle 201. The setting of the pull wire terminal 401 can conveniently realize the snap-fit ​​assembly of the pull wire 40 and the brake handle 201. It can be understood that the pull wire terminal 401 at the second end is snap-fitted and assembled on the pull rod of the brake lower pump.

[0086] In summary, the grip torque segmented brake handle provided by the embodiment of the utility model, by setting two rotation axes, the lower rotating shaft 2022 and the upper pin shaft 204, allows the brake handle member 201 to be driven to rotate along the lower rotating shaft 2022 first, and then along the upper pin shaft 204 when the rider holds it, so that the grip torque is divided into two sections so that the cable 40 has a small pulling force and a large stroke under the first section of the grip torque, thereby quickly tensioning, and has a large pulling force and a small stroke under the second section of the grip torque, thereby providing a large braking pulling force; when applied to the cable-pull disc brake of a bicycle, the brake pads of the brake lower pump are quickly approached to the disc under the first section of the grip torque, and the output force is small and does not affect the braking effect; the brake pads of the brake lower pump are forced to press the disc under the second section of the grip torque to meet the large braking torque requirement; the two-section grip torque effectively takes into account the convenient assembly requirements of the disc brake and the large braking force braking requirements, effectively improves the braking feel of the bicycle cable-pull disc brake, and improves the braking comfort of the rider.

[0087] Example 2

[0088] Embodiment 2 of the present utility model provides a wire-pull disc brake having the segmented brake handle of the grip moment as described in embodiment 1, and:

[0089] The brake pump is mounted on the front / rear wheel of the bicycle frame and is arranged in conjunction with the disc. The brake pump is connected to the second end of the pull cable 40 to drive the brake pads in the brake pump to clamp and brake the disc in sections when the torque segmented brake handle is gripped.

[0090] In summary, the segmented brake handle and cable-pull disc brake provided by the embodiment of the utility model, by setting two rotation axes, the lower rotating shaft 2022 and the upper pin shaft 204, enable the brake handle member 201 to be firstly driven to rotate along the lower rotating shaft 2022 and then along the upper pin shaft 204 when the brake handle member 201 is held by the rider, so that the brake handle member 201 is divided into two sections so that the cable 40 has a small tension and a large stroke under the first section of the gripping torque, thereby being quickly tensioned, and has a large tension and a small stroke under the second section of the gripping torque, thereby providing a large braking tension; when applied to the cable-pull disc brake of a bicycle, the brake pads of the brake lower pump are quickly approached to the disc under the first section of the gripping torque, and the small output force does not affect the braking effect; the brake pads of the brake lower pump are forced to press the disc under the second section of the gripping torque to meet the large braking torque requirement; the two-section gripping torque effectively takes into account the convenient assembly requirements and large braking force requirements of the disc brake, effectively improves the braking feel of the bicycle cable-pull disc brake, and improves the braking comfort of the rider.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model 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 segmented brake handle, which is used in conjunction with a handlebar of a bicycle. It is characterized in that Included are: A brake handle seat, which is mounted on the handlebar and has a movable cavity inside; A grip brake handle, which is movably mounted on the brake handle seat, at least comprises a brake handle member, a tooth bottom plate member, a tooth cover plate member, an upper pin shaft and a lower rotating shaft, wherein the brake handle member at least comprises a brake handle portion for the rider to hold and a driving portion that moves in the movable cavity, wherein the brake handle member is movably mounted on the brake handle seat via the upper pin shaft, and the tooth bottom plate member and the tooth cover plate member are movably mounted on both sides of the driving portion respectively; A pull wire, a first end of which is connected to the brake handle; When the brake handle is held by the rider, the brake handle is driven to move in two stages along the lower rotating shaft and the upper pin shaft in sequence so that the pull wire is quickly tensioned under the first gripping moment and a large braking force is provided under the second gripping moment.

2. The segmented brake handle according to claim 1, It is characterized in that The brake handle also includes: A pin shaft movable groove is in an arc strip shape and is opened on the upper part of the driving part to movably penetrate the upper pin shaft, and the upper pin shaft is located on a side of the pin shaft movable groove close to the brake handle part in a non-gripping state; A lower shaft groove is provided at the lower part of the driving part to rotatably pass through the lower shaft; The brake handle shaft connecting tooth is integrally formed on both sides of the lower end of the driving part and is arranged in an arc shape with the lower rotating shaft groove as the axis. The two free ends of the brake handle shaft connecting tooth are respectively the first shaft connecting tooth and the second shaft connecting tooth.

3. The segmented brake handle according to claim 2, It is characterized in that The lower ends of the tooth bottom plate and the tooth cover plate are respectively rotatably assembled with the two brake handle shaft teeth, and movable shaft teeth are integrally formed on both sides of the lower ends of the tooth bottom plate and the tooth cover plate, and in a non-holding state, the movable shaft teeth on one side and the first shaft teeth have a rotational clearance that matches the movable path of the upper pin shaft in the movable groove of the pin shaft, and the movable shaft teeth on the other side are abutted and assembled with the second shaft teeth.

4. The segmented brake handle according to claim 2, It is characterized in that The tooth bottom plate comprises: A bottom plate, disposed in the movable cavity and assembled on one side of the driving part; A lower rotating shaft is fixed to a side of the lower part of the bottom plate close to the driving part, and a free end of the lower rotating shaft passes through the lower rotating shaft groove and is rotatably assembled with the lower rotating shaft groove; A first pin hole is provided on the upper portion of the bottom plate for passing an upper pin; The positioning pin is integrally formed on one side of the base plate close to the driving part, and the free end of the positioning pin extends into a positioning groove provided on the driving part and is elastically positioned on one side of the positioning groove close to the brake handle part by a small compression spring.

5. The segmented brake handle according to claim 4, It is characterized in that The gear cover plate comprises: A cover plate, disposed in the movable cavity and assembled on a side of the driving part away from the bottom plate; A hexagonal locking groove is provided on one side of the lower part of the cover plate close to the driving part, which is engaged with the hexagonal locking part formed at the free end of the lower rotating shaft and cooperates with the assembly screws to fix the gear cover plate and the gear bottom plate; A second pin hole is provided on the upper portion of the cover plate to pass an upper pin; A torsion spring assembly portion is arranged on the side of the cover plate away from the driving portion and is equipped with a torsion spring whose torsion axis coincides with the second pin shaft hole. One free end of the torsion spring abuts against a torsion spring buckle portion fixed on the inner wall of the active cavity, and the other free end abuts against the torsion spring assembly portion to provide an elastic restoring force to the torque brake handle.

6. The segmented brake handle according to claim 5, It is characterized in that The torsion spring assembly portion is integrally formed with a columnar step corresponding to the position of the second pin shaft hole for positioning and assembling the torsion spring torsion axis.

7. The segmented brake handle according to claim 1, It is characterized in that The two ends of the brake handle seat body corresponding to the active cavity are both provided with pin shaft fixing holes for fixing the two free ends of the upper pin shaft.

8. The segmented brake handle according to claim 1, It is characterized in that The brake handle seat comprises: The brake handle seat body has an opening on one side for assembling the movable cavity of the driving part; A tightening buckle is arranged on one side of the brake handle seat body to cover and fix the brake handle seat body on the handlebar; A threading pin is arranged on the other side of the brake handle seat body to thread the pull wire and limit the movement trajectory of the pull wire.

9. The segmented brake handle according to claim 1, It is characterized in that Both free ends of the pull wire are fixed with pull wire terminals, and the pull wire terminals are fixedly assembled in the pull wire buckle grooves opened on the brake handle.

10. A cable-pull disc brake, It is characterized in that A brake handle with segmented grip according to any one of claims 1 to 9, and The brake pump is mounted on the front / rear wheel of the bicycle frame and is arranged in conjunction with the disc. The brake pump is connected to the second end of the pull cable to drive the brake pads in the brake pump to clamp and brake the disc in sections when the torque segmented brake handle is gripped.

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