A driving structure and double-sided disc brake caliper driven along the radial direction of a rotating shaft

Abstract

The present invention relates to a driving structure and double-sided disc brake caliper that is pushed radially along a rotating shaft, comprising: a first caliper body, a mounting cavity is provided in the first caliper body, and the mounting cavity comprises a radially arranged first cavity and a second cavity that is connected to the first cavity and has an open bottom; a direction-changing driving mechanism is provided in the mounting cavity, and the direction-changing driving mechanism comprises: an axial rotating member that is rotatably installed in the first cavity; a radial braking member that is movably installed in the second cavity; and a plurality of spherical members that are provided between the axial rotating member and the radial braking member, and when the axial rotating member rotates, the radial braking member is driven by the spherical member to move radially toward the bottom opening. After assembly, the present invention is adapted to the improved rear fork frame, and will not interfere with the frame during braking, and its overall volume is greatly reduced, with rapid driving response and good braking effect, and has high social use value and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycle brake devices, and in particular to a driving structure and a double-sided disc brake caliper that are driven along the radial direction of a rotating shaft. Background Art

[0002] Disc brakes are essential components for bicycles and electric bicycles to adjust speed and brake. Traditional disc brakes are usually large in size. To pursue the overall aesthetics of the vehicle and to make it lighter and smaller, the installation space of disc brakes is compressed to meet the above requirements. Therefore, it is necessary to design a disc brake structure with a smaller size, more reasonable drive, and simpler pull rod routing to meet market demand.

[0003] In order to achieve lightweighting of some vehicles currently on the market, please refer to the attached Figure 7 The vehicle's rear fork frame has been improved, reducing the angle of the rear fork and compressing the installation space accordingly. Traditional disc brakes are primarily driven axially, and when the vehicle brakes, the brake cable pulls the disc brake lever, which interferes with the frame and prevents effective braking.

[0004] To this end, we propose a driving structure that pushes along the radial direction of the rotating shaft and a double-sided disc brake caliper. Summary of the Invention

[0005] The embodiments of the present application provide a driving structure and a double-sided disc brake caliper that are pushed radially along the rotating shaft to at least solve the problem of compressed installation space of the rear fork frame in the prior art. The traditional disc brake drive is basically axial drive. When the vehicle brakes, the disc brake rod is pulled by the brake cable and interferes with the frame, making it impossible to effectively brake.

[0006] In a first aspect, the present invention provides a driving structure for pushing radially along a rotating shaft, comprising a first caliper body, characterized in that a mounting cavity is defined in the first caliper body, and the mounting cavity comprises a radially arranged first cavity and a second cavity that is in communication with the first cavity and has an open bottom;

[0007] A direction-changing drive mechanism is provided in the installation cavity, and the direction-changing drive mechanism includes: an axial rotating part, which is rotatably installed in the first cavity, one end of the axial rotating part extends to the outside of the first cavity and is installed with a pull rod part; a radial braking part, which is movably installed in the second cavity; and several spherical parts, which are arranged between the axial rotating part and the radial braking part. When the axial rotating part rotates, the spherical part drives the radial braking part to move radially toward the bottom opening.

[0008] Optionally, the axial rotating part includes: a rotating rod body, which is radially rotatably installed in the first cavity; an annular step, which is integrally formed in the middle part of the rotating rod body; a screw cover, which is sleeved on the rotating rod body and threadedly installed in the first cavity, and the inner end of the screw cover cooperates with the inner wall surface of the first cavity to limit the axial position of the annular step; there are several first water drop ball channels, which are opened in the same direction on the bottom end surface of the annular step, and the upper half of the spherical part is limited to rolling in the first water drop ball channel.

[0009] Further, optionally, the axial rotating member further includes: a bearing member symmetrically sleeved on both sides of the rotating rod body relative to the annular step, and an outer end surface thereof abuts against the inner wall surface of the first cavity.

[0010] Optionally, the radial brake member includes: a driving platform, which is slidably mounted in the second cavity, and whose upper end surface is provided with an arc groove adapted to the rotation of the annular step; a plurality of second water drop ball grooves, which are opened in the arc groove and match the first water drop ball channel, and the lower half of the spherical member is limited to rolling in the second water drop ball groove; a positioning cover plate, which is slidably mounted on the driving platform and fixed to the bottom opening of the second cavity by a countersunk screw; an elastic member, which is arranged between the driving platform and the positioning cover plate to provide the driving platform with elastic force toward the axial rotating member.

[0011] Further, optionally, a plurality of first half-side grooves are provided on the bottom wall edge of the driving platform, and the first half-side grooves cooperate with the second half-side grooves provided on the inner wall of the second cavity to form a cylindrical assembly groove for installing the elastic member.

[0012] Optionally, the pull rod member includes: a pull rod body, which is fixed to one end of the rotating rod body through a pull rod screw; and a wire pressing screw, which is arranged at a non-center position of the pull rod body to fix the end of the brake steel rope.

[0013] Further, optionally, the side of the pull rod body facing the first cavity has a rotating positioning platform rotatably connected to the inner wall surface of the screw cover, and the end of the rotating rod body facing the rotating positioning platform has a positioning end head, and the rotating positioning platform is provided with a polygonal slot that matches the positioning end head for axial positioning.

[0014] In second aspect, the present invention provides a double-sided disc brake caliper, comprising a second caliper body fixed to the first caliper body by caliper body bolts, a brake member is provided between the second caliper body and the first caliper body for clamping and braking the disc through the above-mentioned driving structure pushed radially along the rotating shaft, the brake member comprises: a brake pad spring; two brake pads, which are symmetrically arranged on both sides of the brake pad spring so as to elastically reset after the braking of the driving structure pushed radially along the rotating shaft is completed.

[0015] Optionally, an adjusting stud for adjusting the position of a brake pad located on one side of the second caliper body to adapt to disc brake requirements is threaded through the bottom of the second caliper body.

[0016] Optionally, a threading screw for guiding the direction of the brake cable is further provided on one side of the second caliper body close to the pull rod.

[0017] The present invention mainly has the following beneficial effects:

[0018] The driving structure of the present invention is reasonably designed and can convert axial rotation into radial drive, which reduces the height of the driving structure as a whole, and the driving response is quick and the braking effect is good. The pull rod arrangement is adjusted from the front of the traditional clamp to the side, and it is effectively adapted to the improved rear fork frame after assembly, and will not interfere with the frame during braking. At the same time, the double-sided disc brake clamp with the driving structure that is pushed radially along the rotating shaft has a greatly reduced overall volume, which reduces the demand for installation space, meets the requirements of lightweight and miniaturized installation of vehicles, and is lighter and more beautiful after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is an exploded view of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention.

[0023] Figure 4 This is a bottom view of the structure of the first clamp body in the present invention.

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the cross-section structure.

[0025] Figure 6 It is a schematic diagram of the combined structure of the radial rotating part and the axial braking part in the present invention.

[0026] Figure 7 This is a schematic diagram of the installation of the double-sided disc brake caliper proposed by the present invention on the rear fork frame.

[0027] Description of reference numerals:

[0028] First clamp body 10, first cavity 101, second cavity 102, mounting wing 103;

[0029] Second clamp body 20, threading screw 201;

[0030] Pull rod 30, pull rod body 301, rotation positioning platform 302, polygonal slot 303, pull rod screw 304, wire pressing screw 305;

[0031] Spherical member 40;

[0032] Axial rotating member 50, rotating rod body 501, annular step 502, first water drop ball path 503, positioning end 504, bearing member 505, screw cover 506;

[0033] Driving platform 601, arc groove 602, second water drop ball groove 603, first half groove 604, positioning cover 605, elastic member 606;

[0034] Braking member 70, brake pad spring 701, brake pad 702, guide post 703, guide post groove 704;

[0035] Adjusting stud 80, caliper bolt 90, rear fork frame b. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] Example 1

[0040] In a first aspect, the present invention provides a driving structure for radially pushing along a rotating shaft, comprising a first caliper body 10, characterized in that a mounting cavity is defined within the first caliper body 10, and the mounting cavity comprises a radially arranged first cavity 101 and a second cavity 102 that is in communication with the first cavity 101 and has an open bottom;

[0041] A direction-changing drive mechanism is provided in the installation cavity, and the direction-changing drive mechanism includes: an axial rotating member 50, which is rotatably installed in the first cavity 101, one end of the axial rotating member 50 extends to the outside of the first cavity 101 and is installed with a pull rod member 30; a radial brake member 60, which is movably installed in the second cavity 102; and several spherical members 40, which are arranged between the axial rotating member 50 and the radial brake member 60. When the axial rotating member 50 rotates, the radial brake member 60 is driven by the spherical member 40 to move radially toward the bottom opening.

[0042] In this embodiment, Figure 2-6 As shown, the axial rotating member 50 includes: a rotating rod body 501, which is radially rotatably mounted in the first cavity 101; an annular step 502, which is integrally formed in the middle of the rotating rod body 501; a screw cover 506, which is sleeved on the rotating rod body 501 and threadedly mounted in the first cavity 101, and the inner end of the screw cover 506 cooperates with the inner wall surface of the first cavity 101 to limit the axial position of the annular step 502; a plurality of first water drop ball paths 503, which are opened in the same direction on the bottom end surface of the annular step 502, and the upper half of the spherical member 40 is limited in rolling in the first water drop ball paths 503; a bearing member 505, which is symmetrically sleeved on both sides of the rotating rod body 501 relative to the annular step 502, and its outer end surface abuts the inner wall surface of the first cavity 101;

[0043] In this embodiment, Figure 2-6 As shown, the radial brake member 60 includes: a driving platform 601, which is slidably mounted in the second cavity 102, and has an arc-shaped groove 602 on its upper end surface that is rotatably adapted to the annular step 502; a plurality of second water drop ball grooves 603, which are opened in the arc-shaped grooves 602 and match the first water drop ball channels 503, and the lower half of the spherical member 40 is limited in rolling in the second water drop ball grooves 603; a positioning cover plate 605, which is slidably sleeved on the driving platform 601 and fixed to the bottom opening of the second cavity 102 by countersunk screws; an elastic member 606, which is arranged between the driving platform 601 and the positioning cover plate 605 to provide an elastic force to the driving platform 601 toward the axial rotating member 50; in this embodiment, the elastic member 606 can be a compression spring or a spring column;

[0044] In the technical solution of the above embodiment, the direction-changing drive mechanism is composed of an axial rotating part 50, a spherical part 40 and a radial braking part 60. In the unstressed state, the upper and lower parts of the spherical part 40 are completely located in the first water drop ball channel 503 and the second water drop ball groove 603, and no additional thickness is generated. The overall height of the split pull rod bidirectional disc brake of this embodiment is reduced to the greatest extent from the design principle; when driven by force, the rotating rod body 501 actively rotates in the first cavity 101, driving the spherical part 40 to roll in the first water drop ball channel 503, and changing position with the spherical part 40. The rolling of the spherical part 40 will also change position along the second water drop ball groove 603. The two are combined to press the driving platform 601 to move downward; when the force is applied, the elastic force of the elastic part 606 pushes the driving platform 601 to reset upward, driving the spherical part 40 to roll in the opposite direction, and driving the rotating rod body 501 to reset at the same time.

[0045] Furthermore, in this embodiment, if Figure 2-6 As shown, a plurality of first half-side grooves 604 are provided on the bottom wall edge of the driving platform 601, and the first half-side grooves 604 cooperate with the second half-side grooves provided on the inner wall of the second cavity 102 to form a cylindrical assembly groove for installing the elastic member 606. By setting the two half-side grooves, the overall volume of the driving platform 601 is effectively reduced and the installation of the elastic member 606 is adapted, thereby reducing the volume of the first caliper body 10 as a whole, reducing the volume of the double-sided disc brake caliper product, and making it lighter and more beautiful after installation.

[0046] In this embodiment, Figure 2-3 As shown, the pull rod member 30 includes: a pull rod body 301, which is roughly fan-shaped and is fixed to one end of the rotating rod body 501 by a pull rod screw 304; a wire pressing screw 304, which is arranged at a non-center position of the pull rod body 301 to fix the end of the brake rope; wherein, the pull rod body 301 has a rotating positioning platform 302 rotatably connected to the inner wall surface of the screw cover 506 on the side facing the first cavity 101, and the rotating rod body 501 has a positioning end 504 at one end facing the rotating positioning platform 302, and the rotating positioning platform 302 is provided with a polygonal slot 303 that matches the positioning end 504 for axial positioning.

[0047] In the technical solutions of the above embodiments, refer to the attached Figure 7, a schematic diagram of the installation of the double-sided disc brake caliper proposed by the present invention on the rear fork frame, when the rider needs to brake, he pulls the brake cable to drive the pull rod body 301 and the rotating rod body 501 fixed to the pull rod body 301 to rotate axially, and at the same time, the rotating positioning platform 302 rotates with the inner wall surface of the screw cover 506 to effectively ensure that the pull rod body 301 rotates along the end axis of the rotating rod body 501 under the drive of the brake cable, and at the same time, the polygonal groove 303 engages the positioning end 504 of the rotating rod body 501 to realize axial drive positioning, and the arrangement of the driving pull rod body 301 is adjusted from the front of the traditional caliper to the side. After assembly, it effectively adapts to the improved rear fork frame b and will not interfere with the frame during braking; at the same time, it also ensures the stability of the drive.

[0048] Example 2

[0049] In this embodiment, Figure 1-2 As shown in Figure 7, an embodiment of the present invention provides a double-sided disc brake caliper, which is installed at the angle position of the rear fork frame b, and includes a second caliper body 20 fixed to the first caliper body 10 by a caliper body bolt 90, wherein the second caliper body 20 is further provided with a threading screw 201 for guiding the direction of the brake steel rope on the side close to the pull rod member 30; a brake member 70 is provided between the second caliper body 20 and the first caliper body 10 for clamping and braking the bicycle disc through the above-mentioned driving structure pushed radially along the rotating shaft, and the brake member 70 includes: a brake pad spring 701; two brake pads 702, which are symmetrically arranged on both sides of the brake pad spring 701 to elastically reset after the braking of the driving structure pushed radially along the rotating shaft is completed.

[0050] Furthermore, in this embodiment, the brake pad spring 701 is U-shaped, and pin holes located on the same axis are opened on both sides of the brake pad spring 701, and the brake pad spring 701 is fixed between the second caliper body 20 and the first caliper body 10 through a guide column 703 passing through the two pin holes, one end of the guide column 703 extends into the guide column groove 704 opened at the bottom of the first caliper body 10, and the other end of the guide column 703 is threadedly connected to the bottom of the second caliper body 20.

[0051] In this embodiment, Figure 2-3 As shown, the bottom thread of the second caliper body 20 is threaded with an adjustment stud 80 for adjusting the position of the brake pad 702 located on one side of the second caliper body 20 to adapt to the disc braking requirements, so as to facilitate free adjustment and adaptation according to the thickness, type and braking requirements of the bicycle disc.

[0052] For other structures not described, refer to Example 1.

[0053] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A driving structure that pushes along the radial direction of a rotating shaft, comprising a first clamp body, characterized in that: The first caliper body is provided with an installation cavity, and the installation cavity includes a radially arranged first cavity and a second cavity which is connected to the first cavity and has an open bottom; A direction-changing drive mechanism is provided in the installation cavity, and the direction-changing drive mechanism includes: an axial rotating member, rotatably mounted in the first cavity, one end of the axial rotating member extending to the outside of the first cavity and being mounted with a pull rod; a radial brake member, movably mounted in the second cavity; There are a plurality of spherical members disposed between the axial rotating member and the radial braking member, and when the axial rotating member rotates, the spherical members drive the radial braking member to move radially toward the bottom opening; The axially rotating member includes: a rotating rod body, radially rotatingly mounted in the first cavity; an annular step, integrally formed in the middle of the rotating rod body; a screw cap, sleeved on the rotating rod body and threadedly mounted in the first cavity, the inner end of the screw cap cooperating with the inner wall surface of the first cavity to limit the axial position of the annular step; a plurality of first water drop ball paths, which are opened in the same direction on the bottom end surface of the annular step, and the upper half of the spherical member is limited in rolling within the first water drop ball paths; The radial brake member includes: a driving platform, which is slidably mounted in the second cavity, and whose upper end surface is provided with an arc groove that is adapted for rotation with the annular step; a plurality of second water-drop ball grooves, which are opened in the arc groove and match the first water-drop ball track, and the lower half of the spherical member is limited to the rolling position in the second water-drop ball groove; a positioning cover plate, which is slidably sleeved on the driving platform and fixed to the bottom opening of the second cavity by countersunk screws; an elastic member, which is arranged between the driving platform and the positioning cover plate to provide the driving platform with elastic force toward the axial rotating member, wherein the bottom wall edge of the driving platform is provided with a plurality of first half-side grooves, and the first half-side grooves cooperate with the second half-side grooves opened on the inner wall of the second cavity to form a cylindrical assembly groove for the installation of the elastic member.

2. The driving structure for pushing along the radial direction of the rotating shaft according to claim 1, characterized in that: The axial rotating member also includes: The bearing member is symmetrically sleeved on both sides of the rotating rod body relative to the annular step, and the outer end surface of the bearing member abuts against the inner wall surface of the first cavity.

3. The driving structure for pushing along the radial direction of the rotating shaft according to claim 1, characterized in that: The pull rod comprises: A pull rod body, which is fixed to one end of the rotating rod body by a pull rod screw; A wire pressing screw is arranged at a non-center position of the pull rod body to fix the end of the brake steel rope.

4. The driving structure for pushing along the radial direction of the rotating shaft according to claim 3, characterized in that: The side of the pull rod body facing the first cavity has a rotating positioning platform rotatably connected to the inner wall of the screw cover, and the end of the rotating rod body facing the rotating positioning platform has a positioning end head, and the rotating positioning platform is provided with a polygonal slot that matches the positioning end head for axial positioning.

5. A double-sided disc brake caliper, characterized by: The invention comprises a second caliper body fixed to the first caliper body by a caliper body bolt, a brake member for clamping and braking the disc by the driving structure pushed radially along the rotating shaft according to any one of claims 1 to 4 is provided between the second caliper body and the first caliper body, and the brake member comprises: brake pad springs; There are two brake pads, which are symmetrically arranged on both sides of the brake pad spring so as to elastically reset after the braking of the driving structure pushed radially along the rotating shaft is completed.

6. The double-sided disc brake caliper according to claim 5, characterized in that: The bottom thread of the second caliper body is threaded with an adjusting stud for adjusting the position of the brake pad located on one side of the second caliper body to adapt to the disc brake requirements.

7. The double-sided disc brake caliper according to claim 5, wherein: A threading screw for guiding the direction of the brake steel rope is further provided on one side of the second caliper body close to the pull rod.

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