WO2023216442A1

WO2023216442A1 - Electronic derailleur and variable-speed bicycle

Info

Publication number: WO2023216442A1
Application number: PCT/CN2022/111596
Authority: WO
Inventors: 刘春生; 周慧锋
Original assignee: 珠海蓝图运动科技股份有限公司
Priority date: 2022-05-10
Filing date: 2022-08-11
Publication date: 2023-11-16
Also published as: CN114906264B; CN114906264A

Abstract

Disclosed in the embodiments of the present application are an electronic derailleur and a variable-speed bicycle. The electronic derailleur comprises a base member, a P joint member, a chain guide member, an electric driver and a power supply. A hinged quadrilateral member comprises an inner linkage and an outer linkage; the driving axis of the electric driver coincides with a target diagonal line of the hinged quadrilateral, the electric driver being used for changing the length of the target diagonal line, so as to deform the hinged quadrilateral; the power supply is located within a motion space between the inner linkage and the outer linkage, and the power supply is electrically connected to the electric driver. In the embodiment of the present application, the distance between the power supply and the electric driver can be shortened, so that a power line can be connected in the shortest connection mode to the power supply, avoiding the problem of complex wiring and accordingly improving the structural compactness of the electronic derailleur.

Description

An electronic derailleur and speed-changing bicycle

This application is based on the Chinese patent application with application number 202210508355.6 and a filing date of May 10, 2022, and claims its priority. The entire content of the application is hereby incorporated into this application as a whole.

Technical field

The present application relates to the field of bicycle transmission devices, and in particular to an electronic derailleur and a transmission bicycle.

Background technique

At present, with the development of the bicycle industry, the bicycle transmission system has derived an electronic transmission system based on the traditional mechanical transmission system. As the electronic transmission system technology gradually matures, the electronic transmission system has become more and more popular in recent years. Very popular.

The batteries of electronic derailleurs on the market today are generally installed on the base member, or the batteries of the electronic derailleur are installed on the inner and outer connecting rods, or the batteries of the electronic derailleur are installed elsewhere on the bicycle frame. .

The above-mentioned prior art is based on the installation position of the battery, which results in a long power cord for connecting the battery and the motor of the electronic derailleur, and requires an additional cable tie (cable tie) to tie the power cord to the bicycle frame. That is to say, existing electronic derailleurs have complex wiring, resulting in insufficient compactness of the structure of the electronic derailleur.

Application content

The purpose of this application is to provide an electronic derailleur and a speed-changing bicycle, aiming to solve the problem of complex wiring in existing electronic derailleurs.

In order to solve the above technical problems, the purpose of this application is achieved through the following technical solutions: providing an electronic derailleur, including:

a base member for connection with the frame of a bicycle;

P joint member, the P joint member is connected to the base member through a hinged quadrilateral member;

A chain guide member, the P joint member is rotatably provided at one end of the chain guide member;

The articulated quadrilateral member includes:

Inner connecting rod, the two ends of the inner connecting rod are rotatably arranged on the base member and the P-joint member respectively;

An outer link, both ends of which are rotatably arranged on the base member and the P-joint member respectively, wherein the outer link is arranged opposite to the inner link in a hinged quadrilateral;

Also includes:

An electric driving member, the driving axis of the electric driving member coincides with the target diagonal of the hinged quadrilateral, and is used to change the target diagonal length, thereby deforming the hinged quadrilateral;

A power supply is located in the movable space between the inner connecting rod and the outer connecting rod, and is electrically connected to the electric driving component.

Further, the electric driving part is connected to the hinged quadrilateral member through a mounting base, and the power supply is installed on one side of the mounting base, wherein the electric driving part includes:

A motor, which is installed on the other side of the mounting base;

Control board, the control board is installed on one side of the mounting base, and the control board is electrically connected to the power supply and the motor respectively;

The mounting member is connected to the output shaft of the motor and is used to slide back and forth along the drive axis when the output shaft of the motor rotates to change the length of the target diagonal.

Further, the mounting base includes:

A base portion, the extension axis of the base portion coincides with the driving axis, and a relief groove is provided on one side of the base portion for the control panel to be embedded;

A bearing portion, which is fixed to one end on the other side of the base portion and has a bearing hole for the tail end of the motor to be embedded;

2 oppositely arranged latching parts, both of which are fixed on the other end of the other side of the base part, and a space for the front end of the motor to be embedded is formed between the two latching parts. snap hole;

Locking part, the locking part is connected to the two clamping parts, and is used to connect the two clamping parts after the front end of the motor is inserted into the clamping hole, so as to clamp the motor.

Further, the power supply includes:

The battery body is electrically connected to the control board;

A battery case is fastened to one side of the mounting base, and has a receiving cavity for accommodating the battery body.

Further, the battery case is detachably connected to the mounting base through a connecting piece.

Further, the battery case is provided with a first protrusion at one end and a second protrusion at the other end;

The connectors include:

A limiting block, the limiting block is fixed on one end of the mounting base, and the limiting block is provided with a matching hole for the first protrusion to be embedded;

The buckle is rotatably provided at the other end of the mounting base and can be connected with the second protrusion to fasten the battery case to the mounting base.

Further, the other end of the battery case is provided with an escape groove for the buckle to be inserted. The buckle includes:

A rotating part, the rotating part is rotationally connected in the avoidance groove;

A connecting part, the connecting part is fixed at the end of the rotating part;

A snap-fit portion is fixedly provided between the rotating portion and the connecting portion for resisting the second protrusion.

Further, the second protrusion is provided with a buckling surface that is inclined toward the battery case and downward, and the buckling portion is provided with a pressing surface that cooperates with the buckling surface.

Further, the inner link and the outer link are both brackets, and the brackets each include a connecting part and two wing parts respectively fixed on the opposite ends of the connecting part, and each of the wing parts is passed through a corresponding The pin element is rotationally connected to the corresponding position of the base member or P-joint member;

Wherein, the movable space is located between the two brackets, the mounting seat is fixed on the end of the first pin element, and the mounting piece is fixed on the end of the third pin element.

An embodiment of the present application also provides a variable speed bicycle, which includes an electronic derailleur as described above and a bicycle body, and the electronic derailleur is installed on the bicycle body.

Embodiments of the present application provide an electronic derailleur and a speed-changing bicycle, wherein: the electronic derailleur includes a base member, a P-joint member, a chain guide member, an electric driving member and a power supply, and the base member is used to communicate with The bicycle frame is connected; the P joint member is connected to the base member through a hinged quadrilateral member; the P joint member is rotatably provided at one end of the chain guide member; the hinged quadrilateral member includes an inner connecting rod , external link, the two ends of the inner link are rotatably arranged on the base member and the P-joint member respectively; the two ends of the outer link are rotatably arranged on the base member and the P-joint member respectively, wherein , the outer connecting rod is arranged opposite to the inner connecting rod in the hinged quadrilateral; the driving axis of the electric driving member coincides with the target diagonal of the hinged quadrilateral, and is used to change the target diagonal length, thereby making The hinged quadrilateral is deformed; the power supply is located in the movable space between the inner connecting rod and the outer connecting rod, and the power supply is electrically connected to the electric driving part.

The embodiment of the present application can shorten the distance between the power supply and the electric driving component, so that the power cord can be connected to the power supply in the shortest possible connection, avoiding the problem of complicated wiring, thereby improving the structural compactness of the electronic derailleur.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, which are of great significance to this field. Ordinary technicians can also obtain other drawings based on these drawings without exerting creative work.

Figure 1 is a schematic structural diagram of the electronic derailleur provided by the embodiment of the present application at a first angle;

Figure 2 is a schematic structural diagram of the electronic derailleur provided by the embodiment of the present application at a second angle;

Figure 3 is a schematic structural diagram of the hinged quadrilateral in the electronic derailleur provided by the embodiment of the present application;

Figure 4 is an exploded view of the partial structure of the electronic derailleur provided by the embodiment of the present application;

Figure 5 is a schematic structural diagram of the mounting base in the electronic derailleur provided by the embodiment of the present application;

Figure 6 is a schematic structural diagram of the P joint component in the electronic derailleur provided by the embodiment of the present application;

Figure 7 is a schematic structural diagram of the inner connecting rod and the outer connecting rod in the electronic derailleur provided by the embodiment of the present application;

FIG. 8 is a partial cross-sectional view of the connector in the electronic derailleur provided by the embodiment of the present application.

Description of the marks in the picture:

1. Base component; 2. P joint component; 21. P joint seat; 22. P joint body; 23. Spindle; 24. Return spring; 3. Chain guide component; 4. Inner connecting rod; 41. External connecting rod ; 42. Activity space; 43. Installation seat; 431. Base part; 432. Bearing part; 433. Snapping part; 434. Locking part; 435. Giving way; 436. Bearing hole; 437. Snapping hole ; 44. Electric drive parts; 441. Motor; 442. Control board; 443. Installation parts; 45. Connectors; 451. Limit blocks; 452. Buckle; 453. Fitting holes; 5. Power supply; 51. Battery body ; 52. Battery housing; 53. Avoidance groove; 6. First protrusion; 61. Second protrusion; 62. Fastening surface; 7. Rotating part; 71. Connecting part; 72. Fastening part; 73. Pressing surface; 8. First side; 81. Second side; 9. Externally threaded rod; 91. Internally threaded rod; 92. Limiting piece; 93. Limiting surface; 94. Limiting seat; 95. Limiting Rod; 951, threaded part; 952, raised part; 953, compression spring; 954, clamping groove; 96, limit hole; 97, contact surface; 98, torsion spring; 100, first connecting part; 200, No. Two connecting parts; 101, first wing part; 102, second wing part; 201, third wing part; 202, fourth wing part; 301, first pin element; 302, second pin element; 303, third Pin element; 304, fourth pin element; a, diagonal line; b, diagonal line.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be understood that, when used in this specification and the appended claims, the terms "comprises" and "comprises" indicate the presence of described features, integers, steps, operations, elements and/or components but do not exclude the presence of one or The presence or addition of multiple other features, integers, steps, operations, elements, components and/or collections thereof.

It should also be understood that the terminology used in the specification of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly dictates otherwise.

It will be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items. .

With reference to Figures 1 to 8, an embodiment of the present application provides an electronic derailleur, including:

Base member 1, said base member 1 is used to connect with the frame of a bicycle;

P joint member 2, which is connected to the base member 1 through a hinged quadrilateral member;

Chain guide member 3, the P joint member 2 is rotatably provided at one end of the chain guide member 3;

The articulated quadrilateral member includes:

Inner connecting rod 4, the two ends of the inner connecting rod 4 are rotatably arranged on the base member 1 and the P joint member 2 respectively;

External link 41, both ends of which are rotatably disposed on the base member 1 and the P-joint member 2 respectively, wherein the external link 41 is opposite to the inner link 4 in a hinged quadrilateral. set up;

Also includes:

The electric driving member 44, and the driving axis of the electric driving member 44 coincides with the target diagonal of the hinged quadrilateral, is used to change the target diagonal length, thereby deforming the hinged quadrilateral;

Power supply 5 is located in the movable space 42 between the inner connecting rod 4 and the outer connecting rod 41 , and is electrically connected to the electric driving component 44 .

1 and 3 , in this embodiment, both ends of the inner link 4 are respectively connected to the base member 1 and the P joint member 2 through pin elements (ie, the first pin element 301 and the second pin element 302 of this application). Rotally connected, both ends of the outer link 41 are rotationally connected to the base member 1 and the P-joint member 2 respectively through pin elements (ie, the third pin element 303 and the fourth pin element 304 of this application), wherein the pin elements 301 are respectively used. The line connected with the pin element 303 as the coordinate points is one of the diagonals a of the hinged quadrilateral (usually a parallelogram), and the line connected with the pin element 302 and the pin element 304 as the coordinate points is the line of the hinged quadrilateral. For another diagonal b, this application preferentially selects diagonal a as the target diagonal. It should be noted that the driving axis of the electric driving member 44 (consistent with the driving direction of the electric driving member 44) basically coincides with the diagonal a.

During the actual riding process, the user controls the electric drive component 44 to adjust the length of the diagonal a to achieve the shifting operation. In order to provide power to the electric drive component 44 and reduce wiring, the power supply 5 and the electric drive of the present application The components 44 are connected into an integral structure. Through such a design, the distance between the power supply 5 and the electric driving component 44 can be shortened, and the problem of complicated wiring can be avoided, thereby improving the compactness of the electronic derailleur; and it is beneficial to When the user replaces the power supply 5.

It should be noted that when the bicycle is riding on bumpy road conditions, the vibration source is transmitted from the tire to the base member 1, the articulated quadrilateral member, and finally to the P joint member 2. However, due to the articulated quadrilateral member and P joint of the present application, The component 2 has a buffering relationship, and the hinged quadrilateral component and the base component 1 also have a buffering relationship, so that the impact on the hinged quadrilateral component will be reduced, that is, the vibration amplitudes of the power supply 5 and the electric drive part 44 are smaller than in the prior art. lowered, thereby protecting the power supply 5 and the electric driving component 44.

2 and 4, in a specific embodiment, the electric driving component 44 is connected to the hinged quadrilateral member through a mounting base 43, and the power supply 5 is installed on one side of the mounting base 43, wherein the electric Driver 44 includes:

Motor 441, the motor 441 is installed on the other side of the mounting base 43;

Control board 442, the control board 442 is installed on one side of the mounting base 43, and the control board 442 is electrically connected to the power supply 5 and the motor 441 respectively;

Mounting piece 443, the mounting piece 443 is connected to the output shaft of the motor 441, and is used to slide back and forth along the driving axis when the output shaft of the motor 441 rotates, so as to change the length of the target diagonal. .

4 and 5 , in this embodiment, for convenience of explanation, one side of the mounting base 43 is named the first side 8 , the other side of the mounting base 43 is named the second side 81 , and the control board 442 and power supply 5 are located on the first side 8, and the motor 441 is located on the second side 81. The control board 442 is connected to the motor 441 (usually a high-precision servo motor 441) through wires. Specifically, a The power supply wire passes through the through hole, and the wire is passed through the through hole and connected to the motor 441 to avoid the wire being exposed to the outside, thereby improving the connection stability of the wire to the motor 441 and the control board 442.

This application is based on the fact that the bicycle is subject to high-intensity vibration during riding, especially when riding on mountain roads. In the prior art, the motor 441 and the battery are connected together through wires, which can easily cause the wires to loosen, thereby causing electronic dialing. The chain device loses its function, so in this application, a terminal plug is provided on the control board 442, and a socket adapted to the terminal plug is provided on the power supply 5. That is, when installing, directly connect the socket of the power supply 5 with the terminal plug. To realize the electrical connection between the two, the terminal connection is used instead of the wire connection, thereby improving the connection stability between the power supply 5 and the control board 442 .

In a specific embodiment, the mounting base 43 includes:

Base portion 431, the extension axis of the base portion 431 coincides with the driving axis, and a relief groove 435 is provided on one side of the base portion 431 for the control panel 442 to be embedded;

The bearing portion 432 is fixed to one end of the other side of the base portion 431 and has a bearing hole 436 for the rear end of the motor 441 to be inserted;

There are two opposite clamping parts 433. Both of the two clamping parts 433 are fixed on the other end of the other side of the base part 431. A space for the motor is formed between the two clamping parts 433. The front end of 441 is embedded with a snap hole 437;

Locking part 434, the locking part 434 is connected to the two clamping parts 433, and is used to connect the two clamping parts 433 after the front end of the motor 441 is inserted into the clamping hole 437. , to clamp the motor 441.

In this embodiment, both the first side 8 and the second side 81 are located on the base part 431 , and the bearing part 432 and the clamping part 433 can be welded or bolted to the second side 81 of the base part 431 connection, the relief groove 435 is provided on the first side 8 of the base part 431, and the control plate 442 can be connected to the base part 431 by bolting after being embedded in the relief groove 435. In this embodiment, the locking part 434 includes bolts and nuts used together. After the rear end of the motor 441 is inserted into the load-bearing hole 436, and the front end of the motor 441 is inserted into the clamping hole 437, the bolts are inserted through the two clamping parts 433 in sequence, and then the nuts and bolts are threaded. , so that the two clamping parts 433 are close to each other (the two clamping parts 433 are elastically deformed), so as to achieve the purpose of locking the motor 441 on the base part 431. The locking operation is simple, and the motor 441 can be removed for repair or maintenance later. Replacement is also more convenient.

In a specific embodiment, the power supply 5 includes:

The battery body 51 is electrically connected to the control board 442;

The battery case 52 is fastened to one side of the mounting base 43 . The battery case 52 has a receiving cavity for accommodating the battery body 51 .

In this embodiment, the battery body 51 is preferably a storage battery to achieve the purpose of environmental protection and energy saving. If necessary and/or desired, the storage battery can also be replaced with other types of batteries, so it will not be described again; wherein, the battery housing 52 As a casing with an opening, the battery can be completely embedded in the battery casing 52 to shield the battery, which can reduce the degree of damage to the battery from the external environment to a certain extent. If necessary and/or desired, a buffer layer of a certain thickness can be provided in the receiving cavity.

In a specific embodiment, the battery case 52 is detachably connected to the mounting base 43 through a connecting piece 45 .

The detachable installation method can improve the efficiency of user replacement of batteries.

In a specific embodiment, the battery case 52 is provided with a first protrusion 6 on one end and a second protrusion 61 on the other end;

The connector 45 includes:

Limiting block 451, the limiting block 451 is fixed on one end of the mounting base 43, and the limiting block 451 is provided with a matching hole 453 for the first protrusion 6 to be embedded;

The buckle 452 is rotatably provided at the other end of the mounting base 43 and can be connected with the second protrusion 61 to fasten the battery case 52 to the mounting base 43 .

In this embodiment, after the battery body 51 is installed in the accommodating cavity, the battery body 51 and the battery case 52 are moved along the length direction of the base portion 431 so that the first protrusion 6 is inserted into the mating hole 453 to achieve the desired position of the battery. For the purpose of limiting and positioning the housing 52 , the battery housing 52 and the battery body 51 are fixed on the first side 8 of the base portion 431 through the cooperation of the buckle 452 and the second protrusion 61 .

In a specific embodiment, the other end of the battery case 52 is provided with an escape groove 53 for the buckle 452 to be inserted. The buckle 452 includes:

The rotating part 7 is rotatably connected in the escape groove 53;

The connecting part 71 is fixed at the end of the rotating part 7;

The engaging portion 72 is fixedly provided between the rotating portion 7 and the connecting portion 71 for resisting the second protrusion 61 .

In this embodiment, the rotating part 7, the connecting part 71 and the buckling part 72 are integrally injection molded to improve the connection stability between the three. The rotating part 7 is connected to the battery case 52 through a shaft connection; In this application, due to the existence of the connecting portion 71, it is conducive for the user to squeeze the connecting portion 71 with fingers, thereby causing the buckling portion 72 to separate from the second protrusion 61, and due to the existence of the avoidance groove 53, the rotating portion 7 and the buckling can be The portion 72 serves as a shield to prevent the buckle 452 from being unintentionally pressed, resulting in the buckle 452 and the second protrusion 61 being accidentally separated. That is to say, the user can only use fingers to press the connection through the opening of the avoidance groove 53 Department 71.

More preferably, the second protrusion 61 is provided with a buckling surface 62 that is inclined toward the battery case 52 and downward, and the buckling portion 72 is provided with a pressing surface that cooperates with the buckling surface 62 . 73.

In this embodiment, by arranging the buckling surface 62 to be inclined, it is beneficial to increase the contact area between the second protrusion 61 and the buckle 452, and at the same time, it can better prevent the buckle 452 from being separated from the second protrusion 61. , that is, the user needs to use greater force to drive the buckle 452 to elastically deform and separate from the second protrusion 61 .

With reference to Figures 6 to 8, in a specific embodiment, the P joint member 2 includes:

P joint seat 21, the P joint seat 21 is connected to the hinged quadrilateral member;

P joint body 22. The P joint body 22 includes a main shaft 23 fixed on one end of the chain guide member 3 and a return spring 24 sleeved on the main shaft 23. One end of the return spring 24 is fixed on the chain. One end and the other end of the guide member 3 are fixed inside the P joint seat 21 for returning to the initial position after the P joint seat 21 rotates.

In this embodiment, one end of the inner link 4 is rotatably connected to the P joint seat 21 through the second pin element 302, and one end of the outer link 41 is rotatably connected to the P joint seat 21 through the third pin element 303. At the same time, the P joint The seat 21 can rotate around the main axis 23, and one end of the return spring 24 is fixed on the same end of the chain guide member 3, and the other end is fixed inside the P joint seat 21, for when the P joint seat 21 and the chain guide member 3 are opposite. After rotation, the P joint seat 21 is driven to return to the initial position.

In a specific embodiment, the inner link 4 and the outer link 41 are both brackets, and the bracket includes a connecting part (ie, the first connecting part 100 and the second connecting part 200 of this application) and two respective connecting parts. The wing portions fixed at the opposite end of the connecting portion (i.e., the first wing portion 101, the second wing portion 102, the third wing portion 201, and the fourth wing portion 202 of this application), each wing portion passes through a corresponding The pin elements (i.e., the first pin element 301, the second pin element 302, the third pin element 303, and the fourth pin element 304 of the present application) are rotationally connected to the corresponding positions of the base member 1 or the P joint member 2;

The movable space 42 is located between the two brackets, the mounting seat 43 is fixed at the end of the first pin element 301 , and the mounting piece 443 is fixed at the end of the third pin element 303 .

Specifically, the first wing portion 101 and the second wing portion 102 are respectively fixed at the opposite ends of the first connecting portion 100 , and the third wing portion 201 and the fourth wing portion 202 are respectively fixed at the opposite ends of the second connecting portion 200 . The two ends, that is, the bracket is U-shaped when viewed along its length direction. The two U-shaped brackets are interlocked to form a "mouth" shape, and the mounting base 43 is installed between the two brackets. s position.

Since the articulated quadrilateral components deform accordingly when the bicycle is shifting gears or subjected to vibration, this application uses pin elements to realize the connection between the outer link 41, the inner link 4, the base member 1 and the P-joint seat 21. Specifically, , the pin element in this application is a pin that is interference fit or threaded with the base member 1 or the P joint seat 21 .

In this embodiment, since the motor 441 has better control accuracy and can achieve desired changes in the control of the target diagonal, the driving source in the electric driving component 44 is preferably set to the motor 441, but it should be understood that, If needed and/or desired, the motor 441 can be replaced with an electric actuator.

In a specific embodiment, the mounting member 443 includes:

Externally threaded rod 9, the externally threaded rod 9 is fixed at the end of the output shaft of the motor 441;

Internally threaded rod 91, said internally threaded rod 91 has a threaded hole for threaded connection with said externally threaded rod 9;

The limiting member 92 is rotationally connected to the third pin element and is used to limit the rotation of the internally threaded rod 91 .

In this embodiment, the rotation axes of the externally threaded rod 9 , the internally threaded rod 91 and the output shaft of the motor 441 are all coincident. Under the limiting action of the limiter 92 , the motor 441 is started, driving the externally threaded rod 9 to rotate, and then The internally threaded rod 91 is driven to move along the driving axis. Due to the existence of each pin element, when the internally threaded rod 91 moves in one direction of the driving axis, the motor 441 itself also moves in the other direction of the driving axis, that is, the first pin is changed. The distance between element 301 and second pin element 302 brings about the deformation of the hinged quadrilateral.

In a specific embodiment, a limiting surface 93 is provided on the outer peripheral side of the internally threaded rod 91 and extends along its length direction, wherein the limiting member 92 includes:

Limiting seat 94, the limiting seat 94 is provided with a sliding hole for the internally threaded rod 91 to slide;

The limiting rod 95 is fixed on the limiting seat 94 and resists the limiting surface 93 .

In this embodiment, the limiting surface 93 is a plane provided on the outer peripheral side of the internally threaded rod 91. Through the cooperation of the limiting surface 93 and the sliding hole, when the externally threaded rod 9 rotates in the threaded hole, the internally threaded rod 91 They do not rotate together, but move in a straight line.

In this embodiment, the limiting rod 95 includes a threaded portion 951 that is threadedly connected to the limiting seat 94, and a hemispherical protruding portion 952 fixed on the threaded portion 951 through a compression spring 953. Specifically, the threaded portion The end of 951 is provided with a slot 954 for the compression spring 953 to be embedded. One end of the compression spring 953 is fixed at the bottom of the slot 954, and the other end is fixed at the protrusion 952, so that the protrusion 952 can slide in the slot 954. And at least part of it extends from the opening of the slot 954 to resist the limiting surface 93. The limiting surface 93 has a distance from both end surfaces of the internally threaded rod 91 to limit the internally threaded rod 91 on the limiting seat 94. The sliding distance prevents the internally threaded rod 91 from falling off the limiting seat 94 when the motor 441 fails.

In a specific embodiment, each of the pin elements is threadedly connected to the base member 1 or the P joint member 2, and the inner link 4 and the outer link 41 are provided with mounting holes for the pin elements to pass through. hole (not shown), wherein the diameter of the mounting hole is larger than the outer diameter of the pin element, and an elastic member for resetting the inner link 4 is provided on the third pin element 303 .

In this embodiment, since the diameter of the mounting hole is larger than the outer diameter of the pin element, the motor 441 has a certain room for shaking. During the riding process, the motor 441 may shake to a preset degree due to the impact of bumpy road conditions. , thereby achieving the purpose of buffering.

In this embodiment, the P-joint seat 21 is provided with an abutment surface 97 (as shown in FIG. 2 ), and the abutment surface 97 contacts the side wall of the outer connecting rod 41 so that the outer connecting rod 41 can fit against the abutment surface 97 Rotate to limit the position of the outer link 41. The elastic member is preferably set as a torsion spring 98. The torsion spring 98 is sleeved on the third pin element 303, and one end of the torsion spring 98 is connected to the inner link 4, and the other end of the torsion spring 98 is connected to the inner link 4. One end is connected to the P joint seat 21 and is used to limit the position of the inner connecting rod 4.

An embodiment of the present application also provides a variable speed bicycle, including an electronic derailleur as described above and a bicycle body (not shown), and the electronic derailleur is installed on the bicycle body.

It should be noted that this application is mainly an improvement to the rear derailleur of a bicycle, so the bicycle body will not be elaborated in detail. The rear derailleur of this application is suitable for assembly on any existing bicycle body with a speed change function. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of various equivalent methods within the technical scope disclosed in the present application. Modification or replacement, these modifications or replacements shall be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

An electronic derailleur including:

Base member (1), the base member (1) is used to connect with the frame of a bicycle;

P joint member (2), the P joint member (2) is connected to the base member (1) through a hinged quadrilateral member;

Chain guide member (3), the P joint member (2) is rotatably provided at one end of the chain guide member (3);

The articulated quadrilateral member includes:

Inner connecting rod (4), the two ends of the inner connecting rod (4) are rotatably arranged on the base member (1) and the P-joint member (2) respectively;

External link (41). Both ends of the external link (41) are rotatably arranged on the base member (1) and the P-joint member (2) respectively, wherein the external link (41) is hinged It is arranged opposite to the inner connecting rod (4) in the quadrilateral;

It is also characterized by:

An electric driving member (44), the driving axis of the electric driving member (44) coincides with the target diagonal of the hinged quadrilateral, and is used to change the target diagonal length, thereby deforming the hinged quadrilateral;

Power supply (5). The power supply (5) is located in the movable space (42) between the inner connecting rod (4) and the outer connecting rod (41). The power supply (5) is connected with the electric driving part (41). 44) Electrical connection.
The electronic derailleur according to claim 1, characterized in that the electric driving member (44) is connected to the hinged quadrilateral member through a mounting base (43), and the power supply (5) is installed on the mounting base. (43) One side, wherein the electric driving member (44) includes:

Motor (441), the motor (441) is installed on the other side of the mounting base (43);

Control board (442), the control board (442) is installed on one side of the mounting base (43), and the control board (442) is electrically connected to the power supply (5) and the motor (441) respectively;

Mounting piece (443), the mounting piece (443) is connected to the output shaft of the motor (441), and is used to slide back and forth along the driving axis when the output shaft of the motor (441) rotates to change the The length of the target diagonal.
The electronic derailleur according to claim 2, characterized in that the mounting base (43) includes:

Base portion (431). The extension axis of the base portion (431) coincides with the driving axis. A relief groove is provided on one side of the base portion (431) for the control panel (442) to be embedded. (435);

The bearing part (432) is fixed to one end on the other side of the base part (431), and has a bearing hole (436) for the tail end of the motor (441) to be embedded;

2 oppositely arranged latching parts (433), both of which are fixed on the other end of the other side of the base part (431), and the two latching parts (433) ) is formed between them to form a snap hole (437) for the front end of the motor (441) to be embedded;

Locking part (434), the locking part (434) is connected to the two clamping parts (433), and is used to insert the front end of the motor (441) into the clamping hole (437) to lock the The two clamping parts (433) are connected to clamp the motor (441).
The electronic derailleur according to claim 2, characterized in that the power supply (5) includes:

Battery body (51), the battery body (51) is electrically connected to the control board (442);

Battery housing (52), the battery housing (52) is fastened to one side of the mounting base (43), and the battery housing (52) has an accommodation cavity for accommodating the battery body (51).
The electronic derailleur according to claim 4, characterized in that the battery housing (52) is detachably connected to the mounting base (43) through a connecting piece (45).
The electronic derailleur according to claim 5, characterized in that the battery housing (52) is provided with a first protrusion (6) at one end and a second protrusion (61) at the other end;

Wherein, the connector (45) includes:

Limiting block (451). The limiting block (451) is fixed at one end of the mounting base (43). The limiting block (451) is provided with a hole for the first protrusion (6) to be embedded. Fitting hole(453);

The buckle (452) is rotatably provided at the other end of the mounting base (43) and can be connected with the second protrusion (61) to secure the battery case ( 52) Fasten to the mounting base (43).
The electronic derailleur according to claim 6, characterized in that the other end of the battery housing (52) is provided with an escape groove (53) for the buckle (452) to be inserted into, and the buckle (452) )include:

The rotating part (7) is rotatably connected in the avoidance groove (53);

The connecting part (71) is fixed at the end of the rotating part (7);

The buckling part (72) is fixed between the rotating part (7) and the connecting part (71), and is used to resist the second protrusion (61).
The electronic derailleur according to claim 7, characterized in that the second protrusion (61) is provided with a engaging surface (62) that is inclined toward the battery housing (52) and downwards, and the The buckling part (72) is provided with a pressing surface (73) that cooperates with the buckling surface (62).
The electronic derailleur according to claim 2, characterized in that: the inner connecting rod (4) and the outer connecting rod (41) are brackets, and the bracket includes connecting parts (100, 200) and 2 There are two wing parts (101, 102, 201, 202) respectively fixed on the opposite ends of the connecting part. Each of the wing parts is connected to the base member (1) through a corresponding pin element (301, 302, 303, 304). ) or the corresponding position of the P joint component (2) is rotationally connected;

Wherein, the activity space (42) is located between the two brackets, the mounting seat (43) is fixed on the end of the first pin element (301), and the mounting piece (443) is fixed on the third pin element (301). The end of the three-pin element (303).
A variable speed bicycle, characterized by: including an electronic derailleur according to any one of claims 1 to 9 and a bicycle body, the electronic derailleur being installed on the bicycle body.