A universal bicycle hydraulic brake switch bracket

Abstract

The present invention relates to the technical field of bicycle equipment, and in particular to a universal bicycle hydraulic brake switch bracket, which is matched with a brake pump body and cooperates to jointly enclose a mounting cavity. The universal bicycle hydraulic brake switch bracket can be compatible with both a reed switch and a Hall switch, and is formed with a semicircular process avoidance groove, a semicircular mounting groove and an opposing expansion structure. When the universal bicycle hydraulic brake switch bracket is assembled in place on the brake pump body, the semicircular mounting groove independently becomes a mounting cavity for fitting a columnar magnetic field sensing part of the reed switch, and the opposing expansion structure and the semicircular mounting groove cooperate to form a mounting cavity for fitting a plate-shaped magnetic field sensing part of the Hall switch. After the installation is completed, the columnar magnetic field sensing part of the reed switch can freely perform axial sliding movement in the mounting cavity, and the plate-shaped magnetic field sensing part of the Hall switch can freely perform axial sliding movement and circumferential rotation movement in the mounting cavity.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle equipment, in particular to a universal bicycle hydraulic brake switch bracket. Background Art

[0002] Electric vehicles, electric bicycles, and electric power-assisted bicycles usually use hydraulic disc brake systems to achieve short-term braking. The power-off switch used in hydraulic disc brake systems is usually a reed switch or a Hall switch. The working principle of the reed switch is to magnetize several or a single reed placed in a glass tube through an external magnetic field, and to achieve the disconnection and connection of the switch under the action of the magnetic force. The working principle of the Hall switch is that when a metal or semiconductor sheet with current is placed vertically in a magnetic field, a potential difference will be generated at both ends of the sheet, thereby controlling the on and off of the output state.

[0003] Whether it is a reed switch or a Hall switch, it needs to be supplemented by a switch bracket to complete the assembly with the brake assembly. As far as the current industry status is concerned, according to the different types of pre-installed magnetic field sensing switches, it is necessary to adaptably design switch brackets with different structural forms (such as Figure 1 , 2 As shown in , for example, in the case of pre-installed reed switch, because its magnetic field sensing part is cylindrical, the switch bracket needs to be formed into a cylindrical cavity accordingly; in the case of pre-installed Hall switch, because its magnetic field sensing part is a sheet circuit board, the switch bracket needs to be formed into a square cavity accordingly. This will inevitably increase the difficulty of assembly for workers, which is not conducive to further improvement and optimization of assembly efficiency, and increase the number of types of injection molds, which will lead to high initial mold opening costs. More importantly, when the reed switch and the Hall switch are installed, their displacement freedom is completely restricted, and it is impossible or difficult to fine-tune their relative position or orientation in the later stage. Failure of the reed switch and the Hall switch due to insufficient magnetic field induction intensity often occurs. Therefore, it is urgent for technical personnel to solve the above problems. Summary of the invention

[0004] Therefore, in view of the above existing problems and defects, the research team of the present invention collected relevant information, conducted multiple evaluations and considerations, and continuously experimented and modified the research team, which eventually led to the emergence of the universal bicycle hydraulic brake switch bracket.

[0005] In order to solve the above technical problems, the present invention relates to a universal bicycle hydraulic brake switch bracket, which is matched with a brake pump body and cooperates to jointly enclose a mounting cavity that can be adapted to both a reed switch and a Hall switch. The universal bicycle hydraulic brake switch bracket is a half-body injection molded part, and a semicircular process avoidance groove, a semicircular mounting groove and an opposing expansion structure are formed on it at the same time. When the universal bicycle hydraulic brake switch bracket is assembled in place on the brake pump body, the semicircular process avoidance groove is used to adapt to the electrical connection line of the reed switch or the Hall switch, and the semicircular mounting groove independently becomes a mounting cavity for adapting to the columnar magnetic field sensing part of the reed switch, and the opposing expansion structure and the semicircular mounting groove cooperate to form a mounting cavity for adapting to the plate-shaped magnetic field sensing part of the Hall switch. Before being fixed by injection, the columnar magnetic field sensing part of the reed switch can freely perform axial sliding movement in the mounting cavity, and the plate-shaped magnetic field sensing part of the Hall switch can freely perform axial sliding movement and circumferential rotation movement in the mounting cavity.

[0006] As a further improvement of the technical solution of the present invention, the columnar magnetic field sensing part of the reed switch is installed in the semicircular mounting groove by a clearance fit. Assuming that the radius of the columnar magnetic field sensing part of the reed switch is r1 and the radius of the semicircular mounting groove is r2, then r2-0.6mm≤r1≤t2-0.2mm.

[0007] As a further improvement of the technical solution of the present invention, the opposed expansion structure is composed of a first opposed expansion groove and a second opposed expansion groove which are mirror-symmetrical and have the same groove width. The first opposed expansion groove and the second opposed expansion groove are both formed by extending outward from the inner side wall of the semicircular installation groove.

[0008] As a further improvement of the technical solution of the present invention, assuming that the thickness of the plate-shaped magnetic field sensing portion of the Hall switch is t1, and the widths of the first opposing expansion groove and the second opposing expansion groove are both t2, then t2-0.3mm≤t1≤t2-0.15mm.

[0009] As a further improvement of the technical solution of the present invention, a milling operation is performed on two opposite side walls of the universal bicycle hydraulic brake switch bracket to respectively form a first brake pump body contoured arc surface and a second brake pump body contoured arc surface.

[0010] As a further improvement of the technical solution of the present invention, a plurality of anti-glue overflow grooves are formed on the contoured arc surface of the first brake pump body.

[0011] As a further improvement of the technical solution of the present invention, the universal bicycle hydraulic brake switch bracket is fixedly installed on the brake pump body by means of a first screw and a second screw, and a first extended mounting wing for adapting to the first screw and a second extended mounting wing for adapting to the second screw and opposite to the first extended mounting wing are respectively formed thereon.

[0012] In the process of installing the magnetic field sensing switch into the handlebar assembly, there is no need to change or convert the design structure of the hydraulic brake switch bracket according to the different types of pre-installed magnetic field sensing switches. Specifically, in the case of pre-fitting the reed switch, its columnar magnetic field sensing portion can be installed in the accommodating cavity independently formed by the semicircular mounting groove, and in the case of pre-fitting the Hall switch, its plate-shaped magnetic field sensing portion can be installed in the accommodating cavity formed by the semicircular mounting groove and the opposing expansion structure.

[0013] In practical applications, the universal bicycle hydraulic brake switch bracket can at least achieve the following beneficial technical effects, specifically:

[0014] 1) The universality of the hydraulic brake switch bracket has been expanded to make it compatible with both reed switches and Hall switches, which effectively reduces the matching workload of workers in assembly operations. This helps improve the overall assembly efficiency of the brake assembly;

[0015] 2) Regardless of whether it is a reed switch or a Hall switch, the corresponding hydraulic brake switch bracket has the same mounting cavity design structure. In this way, during the injection molding stage, the factory can greatly reduce the number of mold models and types, thereby reducing the initial development investment of the mold;

[0016] 3) After the magnetic field sensing part of the magnetic field sensing switch is installed in the hydraulic brake switch bracket, the orientation fine-tuning operation can be performed quickly and conveniently to ensure that the magnetic field sensing switch always occupies the correct orientation relative to the brake assembly. Specifically, when the columnar magnetic field sensing part of the reed switch is installed in the hydraulic brake switch bracket, it can freely perform axial sliding movement along the accommodating cavity when subjected to push-pull force until it occupies the correct relative position relative to the brake assembly, and then the curing glue is injected; when the plate-shaped magnetic field sensing part of the Hall switch is installed, it can freely perform axial sliding movement along the accommodating cavity when subjected to push-pull force, and can also perform circumferential rotation movement in the accommodating cavity when subjected to rotational torque until it occupies the correct orientation relative to the brake assembly, and then the curing glue is injected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The invention is a structural schematic diagram of a bicycle hydraulic brake switch bracket adapted to be installed with a reed switch in the prior art.

[0019] Figure 2 The invention is a structural schematic diagram of a bicycle hydraulic brake switch bracket adapted to be installed with a Hall switch in the prior art.

[0020] Figure 3 It is a three-dimensional schematic diagram of a universal bicycle hydraulic brake switch bracket of the present invention.

[0021] Figure 4 yes Figure 3 Front view of .

[0022] Figure 5 yes Figure 4 AA section view.

[0023] Figure 6 It is a three-dimensional schematic diagram of the first brake assembly in the present invention.

[0024] Figure 7 yes Figure 6 Top view of the .

[0025] Figure 8 yes Figure 6 Front view of .

[0026] Fig. 9 yes Figure 8 BB cross-sectional view.

[0027] Fig.10 It is a three-dimensional schematic diagram of the first brake assembly of the present invention (after hiding the brake pump body).

[0028] Fig.11 It is a three-dimensional schematic diagram of a second brake assembly in the present invention.

[0029] Fig.12 yes Fig.11 Top view of the .

[0030] Fig.13 yes Fig.11 Front view of .

[0031] Fig.14 yes Fig.13 CC cross-sectional view.

[0032] Fig.15 It is a three-dimensional schematic diagram of the second brake assembly of the present invention (after hiding the brake pump body).

[0033] 1-Hydraulic brake switch bracket; 11-semicircular process avoidance groove; 12-semicircular installation groove; 13-opposed expansion structure; 131-first opposed expansion groove; 132-second opposed expansion groove; 14-first brake pump body contoured arc surface; 15-second brake pump body contoured arc surface; 16-first extension mounting wing; 17-second extension mounting wing; 2-brake pump body; 3-magnetic field sensing switch; 31-reed switch; 311-columnar magnetic field sensing part; 312-first electrical connection line; 313-first electrical connection terminal; 32-Hall switch; 321-plate-shaped magnetic field sensing part; 322-second electrical connection line; 323-second electrical connection terminal. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the present invention in conjunction with specific embodiments. Figure 6 , 11 As shown in the figure, the brake assembly is mainly composed of a hydraulic brake switch bracket 1, a brake pump body 2, and a magnetic field sensing switch 3, wherein the brake pump body 2 is detachably fixed to the handlebar assembly. The hydraulic brake switch bracket 1 is matched with the brake pump body 2, and cooperates with each other to jointly enclose a mounting cavity to accommodate the magnetic field sensing part of the magnetic field sensing switch 3. When the handbrake line is driven, the magnetic field sensing part is activated by the magnetic force to disconnect and connect the switch, so that the vehicle can be stopped in an emergency in a short time.

[0035] As far as the current industry situation is concerned, the most commonly used types of magnetic field sensing switches 3 are reed switches 31 and Hall switches 32. Among them, the reed switch 31 is sequentially connected by a columnar magnetic field sensing portion 311, a first electrical connection line 312 and a first electrical connection terminal 312 (such as Fig.10 The Hall switch 32 is formed by connecting a plate-shaped magnetic field sensing portion 321, a second electrical connection line 322 and a second electrical connection terminal 322 in sequence (as shown in Fig.15 ).

[0036] Figure 3 , 45 respectively show the three-dimensional schematic diagram, front view and AA cross-sectional view of the universal bicycle hydraulic brake switch bracket of the present invention. It can be seen that a semicircular process avoidance groove 11, a semicircular installation groove 12 and an opposing expansion structure 13 are formed on it at the same time. When the universal bicycle hydraulic brake switch bracket 1 is assembled in place relative to the brake pump body 2, the semicircular process avoidance groove 11 is used for the first electrical connection line 312 and the second electrical connection line 322 to pass through, the semicircular installation groove 12 independently becomes a mounting cavity for fitting the columnar magnetic field sensing part 311, and the opposing expansion structure 13 and the semicircular installation groove 12 cooperate to form a mounting cavity for fitting the plate-shaped magnetic field sensing part 321. The opposing expansion structure 13 is composed of a first opposing expansion groove 131 and a second opposing expansion groove 132 that are mirror-symmetrical and have the same groove width. The first opposing expansion groove 131 and the second opposing expansion groove 132 are both formed by extending outward from the inner side wall of the semicircular installation groove 12. Before being fixed by injection, the columnar magnetic field sensing portion 311 of the reed switch 31 can freely perform axial sliding movement in the installation cavity, and the plate-shaped magnetic field sensing portion 321 of the Hall switch 32 can freely perform axial sliding movement and circumferential rotation movement in the installation cavity (such as Figures 6 to 15 ).

[0037] In the process of installing the magnetic field sensing switch 3 into the handlebar assembly, there is no need to change or convert the design structure of the hydraulic brake switch bracket 1 according to the different types of pre-installed magnetic field sensing switches 3. Specifically, in the case of pre-fitting the reed switch 31, its columnar magnetic field sensing portion 311 can be installed in the accommodating cavity independently formed by the semicircular mounting groove 12, and in the case of pre-fitting the Hall switch 32, its plate-shaped magnetic field sensing portion 321 can be installed in the accommodating cavity formed by the semicircular mounting groove 12, the first opposing expansion groove 131 and the second opposing expansion groove 132.

[0038] By adopting the above technical solution, on the one hand, the universality of the hydraulic brake switch bracket 1 is expanded, making it compatible with both the reed switch 31 and the Hall switch 32, thereby effectively reducing the matching workload of workers in the assembly operation. It is beneficial to improve the overall assembly efficiency of the brake assembly; on the other hand, whether it is the reed switch 31 or the Hall switch 32, the hydraulic brake switch bracket 1 matched therewith has the same installation cavity design structure, so that in the injection molding stage, the factory can greatly reduce the number of mold models and types, thereby helping to reduce the initial development investment of the mold.

[0039] Here, it is necessary to emphasize that after the magnetic field sensing part (including the columnar magnetic field sensing part 311 and the plate-shaped magnetic field sensing part 321) of the magnetic field sensing switch 2 is installed in the hydraulic brake switch bracket 1, the position fine-tuning operation can be performed quickly and conveniently, which not only greatly reduces the difficulty of later assembly and debugging, but also helps to achieve that the magnetic field sensing switch 2 always occupies the correct position relative to the brake assembly for a considerable period of time after being installed. Specifically, when the columnar magnetic field sensing part 311 of the reed switch 31 is installed in the hydraulic brake switch bracket 1, it can freely perform axial sliding movement along the accommodating cavity when subjected to push-pull force, until it occupies the correct relative position relative to the brake assembly, and then the curing glue is injected; when the plate-shaped magnetic field sensing part 321 of the Hall switch 32 is installed, it can freely perform axial sliding movement along the accommodating cavity when subjected to push-pull force, and can also perform circumferential rotation movement in the accommodating cavity when subjected to torque, until it occupies the correct position relative to the brake assembly, and then the curing glue is injected.

[0040] In the case where the reed switch 31 is selected, Figure 8 , 9 As shown in , the columnar magnetic field sensing part 311 is preferably installed in the semicircular mounting groove 12 by a clearance fit. Assuming that the radius of the columnar magnetic field sensing part 311 is r1 and the radius of the semicircular mounting groove 12 is r2, then r2-0.6mm≤r1≤t2-0.2mm. In this way, it is not only ensured that the columnar magnetic field sensing part 311 can be smoothly placed in the mounting cavity independently formed by the semicircular mounting groove 12 during the assembly operation, but also ensured that the columnar magnetic field sensing part 311 can smoothly perform axial displacement movement when subjected to push and pull forces.

[0041] In the case where the Hall switch 32 is selected, Fig.13 , 14 As shown in , assuming that the thickness of the plate-shaped magnetic field sensing part 321 is t1, and the widths of the first opposed expansion groove 131 and the second opposed expansion groove 132 are both t2, then t2-0.3mm≤t1≤t2-0.15mm. In this way, it is not only ensured that the plate-shaped magnetic field sensing part 321 can be smoothly placed in the installation cavity formed by the semicircular installation groove 12, the first opposed expansion groove 131 and the second opposed expansion groove 132 during the assembly operation, but also ensured that the plate-shaped magnetic field sensing part 321 can smoothly perform axial displacement movement and circumferential rotation movement when subjected to push-pull force and rotational torque respectively.

[0042] After the reed switch 31 and the Hall switch 32 are installed in place, in order to achieve fixation, the accommodating cavity needs to be filled with liquid resin glue. In order to avoid the overflow of part of the liquid resin glue through the assembly gap between the hydraulic brake switch bracket 1 and the brake pump body 2, as a further optimization of the above technical solution, Figures 3 to 5 As shown in FIG. 1 , two opposite side walls of the universal bicycle hydraulic brake switch bracket 1 are milled to form a first brake pump body contoured arc surface 14 and a second brake pump body contoured arc surface 15, respectively. In this way, when the assembly operation is completed, the hydraulic brake switch bracket 1 can be pressed against the outer side wall of the brake pump body 2 without gap (such as Fig. 9 , 14 ), which can effectively avoid the overflow of liquid resin glue and ultimately save a lot of subsequent cleaning work.

[0043] Although the above technical solution can effectively reduce the probability of liquid resin glue overflow, when the injection pressure exceeds the standard, the liquid resin glue overflow still occurs from time to time. In view of this, as a further optimization of the above technical solution, multiple anti-overflow grooves are formed on the first brake pump body contoured arc surface 14 and the second brake pump body contoured arc surface 15. For the first brake pump body contoured arc surface 14 alone, the multiple anti-overflow grooves are independent of each other, linearly evenly distributed along its width direction, and the groove depth is preferably controlled at 0.2 to 0.3 mm. In this way, when the injection pressure exceeds the standard, the overflowed liquid resin glue first fills each anti-overflow groove, and solidifies quickly when it is cold, which has the function of enhancing the sealing.

[0044] It is known that the hydraulic brake switch bracket 1 can adopt a variety of design structures to achieve a fixed connection with the brake pump body 2, such as a snap connection, etc. However, hereby recommends an implementation scheme with a simple structural design, extremely low implementation cost, and easy disassembly and assembly operations, specifically: Figures 3 to 5 As shown in Figures , 8, 9, 13 and 14, the hydraulic brake switch bracket 1 is preferably fixedly mounted on the brake cylinder body 2 by means of a first screw and a second screw, and a first extended mounting wing 16 for adapting to the first screw and a second extended mounting wing 17 for adapting to the second screw and opposite to the first extended mounting wing are respectively formed thereon.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A universal bicycle hydraulic brake switch bracket, characterized in that: Matching with the brake pump body, they cooperate to jointly enclose a mounting cavity that can be adapted to both the reed switch and the Hall switch; the universal bicycle hydraulic brake switch bracket is a half-body injection molded part, and a semicircular process avoidance groove, a semicircular mounting groove and an opposing expansion structure are simultaneously formed on it; when the universal bicycle hydraulic brake switch bracket is assembled in place on the brake pump body, the semicircular process avoidance groove is used to adapt to the electrical connection line of the reed switch or the Hall switch, and the semicircular mounting groove independently becomes the mounting cavity for adapting to the columnar magnetic field sensing part of the reed switch, and the opposing expansion structure and the semicircular mounting groove cooperate to form the mounting cavity for adapting to the plate-shaped magnetic field sensing part of the Hall switch; before being fixed by injection, the columnar magnetic field sensing part of the reed switch can freely perform axial sliding movement in the mounting cavity, and the plate-shaped magnetic field sensing part of the Hall switch can freely perform axial sliding movement and circumferential rotation movement in the mounting cavity.

2. The universal bicycle hydraulic brake switch bracket according to claim 1, characterized in that: The columnar magnetic field sensing portion of the reed switch is installed in the semicircular mounting groove in a clearance fit manner; assuming that the radius of the columnar magnetic field sensing portion of the reed switch is r1 and the radius of the semicircular mounting groove is r2, then r2-0.6mm≤r1≤r2-0.2mm.

3. The universal bicycle hydraulic brake switch bracket according to claim 1, characterized in that: The opposed expansion structure is composed of a first opposed expansion groove and a second opposed expansion groove which are mirror-symmetrical and have the same groove width; the first opposed expansion groove and the second opposed expansion groove are both formed by extending outward from the inner side wall of the semicircular mounting groove.

4. The universal bicycle hydraulic brake switch bracket according to claim 3, characterized in that: Assuming that the thickness of the plate-shaped magnetic field sensing portion of the Hall switch is t1, and the widths of the first opposing expansion grooves and the second opposing expansion grooves are both t2, then t2-0.3mm≤t1≤t2-0.15mm.

5. The universal bicycle hydraulic brake switch bracket according to claim 1, characterized in that: Milling operations are performed on two opposite side walls of the universal bicycle hydraulic brake switch bracket to respectively form a first brake pump body contoured cambered surface and a second brake pump body contoured cambered surface.

6. The universal bicycle hydraulic brake switch bracket according to claim 5, characterized in that: A plurality of anti-glue overflow grooves are formed on the contoured curved surface of the first brake pump body.

7. The universal bicycle hydraulic brake switch bracket according to any one of claims 1 to 6, characterized in that: The universal bicycle hydraulic brake switch bracket is fixedly mounted on the brake pump body by means of a first screw and a second screw, and is respectively formed with a first extension mounting wing for adapting to the first screw and a second extension mounting wing for adapting to the second screw and opposite to the first extension mounting wing.

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