CN114906264A

CN114906264A - Electronic derailleur and variable speed bicycle

Info

Publication number: CN114906264A
Application number: CN202210508355.6A
Authority: CN
Inventors: 刘春生; 周慧锋
Original assignee: Zhuhai Ltwoo Controller Technology Co ltd
Current assignee: Zhuhai Ltwoo Controller Technology Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-16
Anticipated expiration: 2042-05-10
Also published as: CN114906264B; WO2023216442A1

Abstract

The embodiment of the invention discloses an electronic derailleur and a speed-changing bicycle, wherein the electronic derailleur comprises a base component, a P joint component, a chain guide component, an electric driving component and a power supply, and a hinged quadrilateral component comprises an inner connecting rod and an outer connecting rod; the driving axis of the electric driving piece is superposed with the target diagonal line of the articulated quadrilateral and is used for changing the length of the target diagonal line so as to deform the articulated quadrilateral; the power supply is positioned in the movable space between the inner connecting rod and the outer connecting rod and is electrically connected with the electric driving piece. The embodiment of the invention can shorten the distance between the power supply and the electric driving element, so that the power line can be connected with the power supply in the shortest connection mode, and the problem of complex wiring is avoided, thereby improving the structural compactness of the electronic derailleur.

Description

Electronic derailleur and variable speed bicycle

Technical Field

The invention relates to the field of bicycle speed changing devices, in particular to an electronic derailleur and a speed changing bicycle.

Background

With the development of the bicycle industry, an electronic speed changing system is derived from a bicycle speed changing system on the basis of a traditional mechanical speed changing system, and with the gradual maturity of the technology of the electronic speed changing system, the electronic speed changing system is widely pursued in recent years.

It is common for batteries of electronic derailleurs on the market today to be mounted on the base member, or to mount the batteries of the electronic derailleur on the inner and outer links, or to mount the batteries of the electronic derailleur elsewhere on the bicycle frame.

The above-mentioned prior art is based on the mounted position of battery, leads to the power cord that is used for connecting battery and the motor of electronic derailleur to be longer, and needs additionally to tie the power cord on the frame of bicycle through the ribbon (binding tape), that is to say, current electronic derailleur exists the complicated condition of walking the line, leads to the not enough compact structure of electronic derailleur.

Disclosure of Invention

The invention aims to provide an electronic derailleur and a speed-changing bicycle, and aims to solve the problem that the conventional electronic derailleur is complex in wiring.

In order to solve the technical problems, the invention aims to realize the following technical scheme: an electronic derailleur is provided, comprising:

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

a P-joint member connected with the base member by an articulated quadrilateral member;

a chain guide member, the P-joint member being rotatably provided at one end of the chain guide member;

the articulated quadrilateral member comprises:

the two ends of the inner connecting rod are respectively and rotatably arranged on the base component and the P joint component;

the two ends of the outer connecting rod are respectively and rotatably arranged on the base component and the P joint component, wherein the outer connecting rod is arranged opposite to the inner connecting rod in the articulated quadrilateral;

further comprising:

an electric driving member, a driving axis of which coincides with a target diagonal of the articulated quadrilateral, for changing a length of the target diagonal, thereby deforming the articulated quadrilateral;

the power supply is positioned in the movable space between the inner connecting rod and the outer connecting rod and is electrically connected with the electric driving part.

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

the motor is arranged on the other side of the mounting seat;

the control panel is arranged on one side of the mounting seat and is electrically connected with the power supply and the motor respectively;

the mounting piece is connected with the output shaft of the motor and used for sliding back and forth along the driving axis when the output shaft of the motor rotates so as to change the length of the target diagonal line.

Further, the mount includes:

the extending axis of the base part is superposed with the driving axis, and one side of the base part is provided with a yielding groove for the control board to be embedded;

the bearing part is fixedly arranged at one end of the other side of the base part and is provided with a bearing hole for the tail end of the motor to be embedded;

2 oppositely arranged clamping parts, wherein 2 clamping parts are fixedly arranged at the other end of the other side of the base part, and clamping holes for embedding the front end of the motor are formed among the 2 clamping parts;

the locking part is connected with the clamping parts and used for embedding the front end of the motor into the clamping holes and then connecting the clamping parts with the motor in order to clamp the motor.

Further, the power supply includes:

the battery body is electrically connected with the control board;

the battery shell is buckled on one side of the mounting seat and is provided with an accommodating cavity for accommodating the battery body.

Furthermore, the battery shell is detachably connected to the mounting seat through a connecting piece.

Furthermore, one end of the battery shell is provided with a first bulge, and the other end of the battery shell is provided with a second bulge;

the connector includes:

the limiting block is fixedly arranged at one end of the mounting seat and provided with a matching hole for the first bulge to be embedded in;

and the buckle is rotatably arranged at the other end of the mounting seat and can be connected with the second bulge so as to fasten the battery shell to the mounting seat.

Further, the battery case other end is provided with the confession the groove of dodging of buckle embedding, the buckle includes:

the rotating part is rotatably connected in the avoidance groove;

the connecting part is fixedly arranged at the tail end of the rotating part;

the buckling part is fixedly arranged between the rotating part and the connecting part and is used for abutting against the second protrusion.

Further, the second protrusion is provided with a fastening surface which is inclined towards the battery shell and faces downwards, and the fastening part is provided with a pressing surface matched with the fastening surface.

Furthermore, the inner connecting rod and the outer connecting rod are brackets, each bracket comprises a connecting part and 2 wing parts respectively fixedly arranged at the opposite ends of the connecting part, and each wing part is rotatably connected with the corresponding position of the base component or the P joint component through a corresponding pin element;

the activity space is located 2 between the bracket, the mount pad sets firmly in the end of first pin component, the installed part sets firmly in the end of third pin component.

An embodiment of the present invention further provides a variable speed bicycle, wherein: comprising the electronic derailleur and a bicycle body as described above, the electronic derailleur is mounted on the bicycle body.

The embodiment of the invention provides an electronic derailleur and a speed-changing bicycle, wherein: the electronic derailleur includes a base member for connection with a frame of a bicycle, a P-joint member, a chain guide member, an electric drive and a power source; the P-joint member is connected to the base member by an articulated quadrilateral member; the P-joint member is rotatably provided at one end of the chain guide member; the articulated quadrilateral component comprises an inner connecting rod and an outer connecting rod, and two ends of the inner connecting rod are respectively and rotatably arranged on the base component and the P joint component; the two ends of the outer connecting rod are respectively and rotatably arranged on the base component and the P joint component, wherein the outer connecting rod is arranged opposite to the inner connecting rod in the articulated quadrilateral; the driving axis of the electric driving piece is coincided with a target diagonal line of the articulated quadrilateral and is used for changing the length of the target diagonal line so as to deform the articulated quadrilateral; the power supply is positioned in the movable space between the inner connecting rod and the outer connecting rod and is electrically connected with the electric driving piece.

The embodiment of the invention can shorten the distance between the power supply and the electric driving element, so that the power line can be connected with the power supply in the shortest connection mode, and the problem of complex wiring is avoided, thereby improving the structural compactness of the electronic derailleur.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of an electronic derailleur at a first angle in accordance with an embodiment of the present invention;

FIG. 2 is a structural schematic view of the electronic derailleur at a second angle in accordance with the present embodiment of the invention;

FIG. 3 is a schematic structural view of an articulated quadrilateral in an electronic derailleur provided in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a partial structure of the electronic derailleur provided in accordance with the embodiment of the present invention;

FIG. 5 is a schematic structural view of a mounting base in the electronic derailleur provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic structural view of a P joint member of the electronic derailleur in accordance with the present embodiment;

FIG. 7 is a schematic structural view of an inner link and an outer link of the electronic derailleur in accordance with the present embodiment;

FIG. 8 is a partial cross sectional view of a coupling member in the electronic derailleur provided in accordance with an embodiment of the present invention.

The designations in the drawings illustrate:

1. a base member; 2. a P joint member; 21. a P joint seat; 22. a P joint body; 23. a main shaft; 24. a return spring; 3. a chain guide member; 4. an inner link; 41. an outer link; 42. an activity space; 43. a mounting seat; 431. a base part; 432. a bearing part; 433. a clamping part; 434. a locking portion; 435. a yielding groove; 436. a bearing hole; 437. a clamping hole; 44. an electric drive; 441. a motor; 442. a control panel; 443. a mounting member; 45. a connecting member; 451. a limiting block; 452. buckling; 453. a mating hole; 5. a power source; 51. a battery body; 52. a battery case; 53. an avoidance groove; 6. a first protrusion; 61. a second protrusion; 62. buckling the surface; 7. a rotating part; 71. a joining section; 72. a fastening part; 73. pressing and kneading the dough; 8. a first side; 81. a second side; 9. an externally threaded rod; 91. an inner threaded rod; 92. a limiting member; 93. a limiting surface; 94. a limiting seat; 95. a limiting rod; 951. a threaded portion; 952. a boss portion; 953. a compression spring; 954. a card slot; 96. a limiting hole; 97. an abutting surface; 98. a torsion spring; 100. a first connection portion; 200. a second connecting portion; 101. a first wing portion; 102. a second wing portion; 201. a third wing portion; 202. a fourth wing portion; 301. a first pin member; 302. a second pin member; 303. a third pin member; 304. a fourth pin element; a. a diagonal line; b. a diagonal line.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

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

It should 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 fig. 1-8, an embodiment of the present invention provides an electronic derailleur, comprising:

a base member 1, said base member 1 being for connection to a frame of a bicycle;

a P joint member 2, the P joint member 2 being connected to the base member 1 by an articulated quadrilateral member;

a chain guide member 3, the P-joint member 2 being rotatably provided at one end of the chain guide member 3;

the articulated quadrilateral member comprises:

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

an outer link 41, both ends of which are rotatably provided to the base member 1 and the P joint member 2, respectively, wherein the outer link 41 is disposed opposite to the inner link 4 in an articulated quadrilateral;

further comprising:

an electric drive 44, and a drive axis of the electric drive 44 coincides with a target diagonal of the articulated quadrilateral, for changing the target diagonal length, thereby deforming the articulated quadrilateral;

the power supply 5 is positioned in the movable space 42 between the inner connecting rod 4 and the outer connecting rod 41, and the power supply 5 is electrically connected with the electric driving piece 44.

Referring to fig. 1 and 3, in the present embodiment, the two ends of the inner link 4 are rotatably connected to the base member 1 and the P joint member 2 through pin elements (i.e., a first pin element 301 and a second pin element 302 in the present application), respectively, and the two ends of the outer link 41 are rotatably connected to the base member 1 and the P joint member 2 through pin elements (i.e., a third pin element 303 and a fourth pin element 304 in the present application), respectively, wherein the pin elements 301 and the pin elements 303 are taken as coordinate points to form a line, i.e., one diagonal a of an articulated quadrilateral (generally, a parallelogram), and the pin elements 302 and the pin elements 304 are taken as coordinate points to form a line, i.e., the other diagonal b of the articulated quadrilateral, which is preferably selected as a target diagonal. It should be noted that the driving axis of the electric driver 44 (which coincides with the driving direction of the electric driver 44) substantially coincides with the diagonal line a.

In the actual riding process, a user controls the electric driving piece 44 to further adjust the length of the diagonal line a, so that the gear shifting operation is realized, in order to provide power for the electric driving piece 44 and reduce wiring, the power supply 5 and the electric driving piece 44 are connected into an integral structure, through the design, the distance between the power supply 5 and the electric driving piece 44 can be shortened, the problem of complicated wiring is avoided, and the structural compactness of the electronic derailleur is improved; and facilitates the user to change the power source 5.

It should be noted that, when the bicycle is ridden on a bumpy road, the vibration source is transmitted from the tire to the base member 1, the articulated quadrilateral member and then to the P joint member 2, and because the articulated quadrilateral member and the P joint member 2 of the present application have a buffering relationship and the articulated quadrilateral member and the base member 1 also have a buffering relationship, the impact on the articulated quadrilateral member is reduced, that is, the amplitude of the vibration on the power source 5 and the electric driver 44 is reduced relative to the prior art, so that the power source 5 and the electric driver 44 are protected.

In a specific embodiment, referring to fig. 2 and 4, the electric driving unit 44 is connected to the articulated quadrilateral member through a mounting seat 43, and the power source 5 is mounted on one side of the mounting seat 43, wherein the electric driving unit 44 includes:

the motor 441 is installed at the other side of the installation seat 43;

a control board 442, the control board 442 being mounted on one side of the mounting seat 43, the control board 442 being electrically connected to the power source 5 and the motor 441, respectively;

a mounting member 443, the mounting member 443 being connected to the output shaft of the motor 441 for reciprocating sliding along the driving axis when the output shaft of the motor 441 rotates, so as to change the length of the target diagonal.

In the present embodiment, referring to fig. 4 and 5, for convenience of explanation, one side of the mounting base 43 is named as a first side 8, the other side of the mounting base 43 is named as a second side 81, the control board 442 and the power source 5 are both located on the first side 8, and the motor 441 is located on the second side 81, wherein the control board 442 is connected to the motor 441 (generally, the high-precision servo motor 441) through a wire, and specifically, a through hole through which a power supply wire passes may be provided on the mounting base 43, and the wire is connected to the motor 441 through the through hole, so as to prevent the wire from 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 bicycle is especially when the mountain road is ridden at the in-process of riding, the bicycle is in the vibration of high strength, connect motor 441 and battery together through the electric wire among the prior art, it is not hard up to lead to the electric wire easily, thereby cause the electron to dial the chain ware and lose the function, so this application is provided with the terminal plug on control panel 442, be provided with the socket with terminal plug adaptation on power 5, when installing promptly, directly with power 5's socket and terminal plug involution and connection, can realize electric connection between them, the mode of connecting through the terminal replaces the mode of connection of electric lines, improve power 5 and control panel 442's connection stability.

In a specific embodiment, the mounting seat 43 includes:

a base portion 431, an extension axis of which coincides with the driving axis, and a relief groove 435 into which the control board 442 is fitted is provided on one side of the base portion 431;

the bearing part 432 is fixedly arranged at one end of the other side of the base part 431, and is provided with a bearing hole 436 into which the tail end of the motor 441 is inserted;

2 oppositely arranged clamping parts 433, wherein 2 clamping parts 433 are fixedly arranged at the other end of the other side of the base part 431, and clamping holes 437 for embedding the front end of the motor 441 are formed among the 2 clamping parts 433;

and the locking part 434 is connected with 2 clamping parts 433, and is used for connecting 2 clamping parts 433 after the front end of the motor 441 is embedded into the clamping hole 437, so as to clamp the motor 441 tightly.

In this embodiment, the first side 8 and the second side 81 are both located on the base portion 431, the bearing portion 432 and the clamping portion 433 can be connected to the second side 81 of the base portion 431 by welding or bolting, the receding groove 435 is disposed on the first side 8 of the base portion 431, the control board 442 can be connected to the base portion 431 by bolting after being inserted into the receding groove 435, in this embodiment, the locking portion 434 includes a bolt and a nut, which are engaged with each other, and is inserted into the carrying hole 436 at the rear end of the motor 441, after the front end of the motor 441 is inserted into the clamping hole 437, the bolt sequentially penetrates through 2 clamping parts 433, then the nut is connected with the bolt by screw thread, so that 2 clamping parts 433 are mutually closed (2 clamping parts 433 are elastically deformed), so as to lock the motor 441 on the base part 431, the locking operation is simple, and the motor 441 can be taken down for maintenance or replacement at the later stage, which is also convenient.

In a specific embodiment, the power supply 5 includes:

the battery body 51, the battery body 51 is electrically connected with the control board 442;

a battery case 52, wherein the battery case 52 is fastened to one side of the mounting base 43, and the battery case 52 has an accommodating cavity for accommodating the battery body 51.

In the present embodiment, the battery body 51 is preferably selected as a storage battery to achieve the purpose of environmental protection and energy saving, and if necessary and/or desired, the storage battery can be replaced by other types of batteries, so that the description is omitted; the battery case 52 is a case with an opening, and the storage battery can be completely embedded in the battery case 52 to shield the storage battery, so that the damage degree of the storage battery to the external environment can be reduced to a certain extent. A thickness of the cushioning layer can be disposed within the receiving cavity if needed and/or desired.

In a specific embodiment, the battery housing 52 is detachably connected to the mounting seat 43 through a connecting member 45.

Through the detachable installation mode, can improve the operating efficiency that the user changed the battery.

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

the connecting member 45 includes:

the limiting block 451 is fixedly arranged at one end of the mounting seat 43, and the limiting block 451 is provided with a matching hole 453 for the first protrusion 6 to be embedded into;

a latch 452 rotatably disposed at the other end of the mounting seat 43 and connected to the second protrusion 61 to fasten the battery case 52 to the mounting seat 43.

In this embodiment, after the battery body 51 is installed in the accommodating cavity, the battery body 51 and the battery housing 52 are moved along the length direction of the base portion 431, so that the first protrusion 6 is inserted into the fitting hole 453 for the purpose of limiting and positioning the battery housing 52, and then the battery housing 52 and the battery body 51 are fixed on the first side 8 of the base portion 431 by using the buckle 452 in cooperation with the second protrusion 61.

In a specific embodiment, the other end of the battery housing 52 is provided with an avoiding groove 53 for the buckle 452 to be inserted into, and the buckle 452 includes:

the rotating part 7 is rotatably connected in the avoiding groove 53;

a joint part 71, wherein the joint part 71 is fixedly arranged at the tail end of the rotating part 7;

and the buckling part 72 is fixedly arranged between the rotating part 7 and the connecting part 71, and is used for abutting against the second bulge 61.

In the present embodiment, the rotating portion 7, the engaging portion 71 and the engaging portion 72 are integrally injection molded to improve the connection stability therebetween, wherein the rotating portion 7 is connected to the battery case 52 by a shaft connection; this application is favorable to using the finger to extrude linking portion 71 owing to linking portion 71's existence to the user to make buckling part 72 and second arch 61 separate, and owing to dodge the existence of groove 53, can play the effect of sheltering from to rotating part 7, buckling part 72, avoid buckle 452 to be pressed by accident, and lead to the unexpected circumstances of separating of buckle 452 and second arch 61, that is to say, the user can only press linking portion 71 from dodging the opening of groove 53 through the finger.

Preferably, the second protrusion 61 is provided with a downwardly inclined engaging surface 62 facing the battery case 52, and the engaging portion 72 is provided with a press-fit surface 73 that is engaged with the engaging surface 62.

In this embodiment, the fastening surface 62 is inclined, which is beneficial to improving the contact area between the second protrusion 61 and the fastener 452, and meanwhile, the fastener 452 can be separated from the second protrusion 61 better, i.e., the user needs to use a larger force to drive the fastener 452 to elastically deform and separate from the second protrusion 61.

In an embodiment, with reference to fig. 6 to 8, the P joint member 2 includes:

a P-joint seat 21, said P-joint seat 21 being connected with said articulated quadrilateral member;

the P joint body 22 comprises a main shaft 23 fixedly arranged at one end of the chain guide member 3 and a return spring 24 sleeved on the main shaft 23, wherein one end of the return spring 24 is fixedly arranged at one end of the chain guide member 3, and the other end of the return spring 24 is fixedly arranged in the P joint seat 21 and is used for returning to an 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, one end of the outer link 41 is rotatably connected to the P-joint seat 21 through the third pin element 303, meanwhile, the P-joint seat 21 can rotate around the spindle 23, and one end of the return spring 24 is fixedly disposed at the same end of the chain guide member 3, and the other end of the return spring is fixedly disposed inside the P-joint seat 21, so as to drive the P-joint seat 21 to return to the initial position after the P-joint seat 21 and the chain guide member 3 rotate relatively.

In a specific embodiment, the inner link 4 and the outer link 41 are both brackets, each of the brackets includes a connecting portion (i.e., the first connecting portion 100 and the second connecting portion 200 of the present application) and 2 wing portions (i.e., the first wing portion 101, the second wing portion 102, the third wing portion 201, and the fourth wing portion 202 of the present application) respectively fixed to opposite ends of the connecting portion, and each of the wing portions is rotatably connected to a corresponding position of the base member 1 or the P joint member 2 through a corresponding pin element (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);

wherein the activity space 42 is located between 2 of the brackets, the mounting seat 43 is fixedly arranged at the distal end of the first pin member 301, and the mounting part 443 is fixedly arranged at the distal end of the third pin member 303.

Specifically, the first wing part 101 and the second wing part 102 are respectively fixed at two opposite ends of the first connecting part 100, the third wing part 201 and the fourth wing part 202 are respectively fixed at two opposite ends of the second connecting part 200, that is, the bracket is U-shaped when viewed along the length direction, and is buckled by two U-shaped brackets to form a shape like a Chinese character 'kou', and the mounting seat 43 is mounted at a position between 2 brackets.

Because the articulated quadrilateral component is correspondingly deformed when the bicycle is shifted or vibrated, the connection among the outer connecting rod 41, the inner connecting rod 4, the base component 1 and the P-joint seat 21 is realized through the pin element, and particularly, the pin element is a pin in interference fit or threaded fit with the base component 1 or the P-joint seat 21.

In the present embodiment, the drive source in electric drive 44 is preferably configured as motor 441, based on the better control accuracy of motor 441 and the desired change in control of the target diagonal, but it should be understood that motor 441 may be replaced with an electric push rod if needed and/or desired.

In a specific embodiment, the mounting part 443 includes:

an externally threaded rod 9, the externally threaded rod 9 being fixedly disposed at a distal end of an output shaft of the motor 441;

an inner threaded rod 91, the inner threaded rod 91 having a threaded hole for threaded connection with the outer threaded rod 9;

a stop member 92, wherein the stop member 92 is rotatably connected to the third pin member for limiting the rotation of the inner threaded rod 91.

In this embodiment, the axes of rotation of the external threaded rod 9, the internal threaded rod 91, and the output shaft of the motor 441 are all coincident, and under the limiting action of the limiting member 92, the motor 441 is activated to rotate the external threaded rod 9 and further to drive the internal threaded rod 91 to move along the driving axis, and due to the existence of each pin element, when the internal threaded rod 91 moves towards one direction of the driving axis, the motor 441 itself also moves along the other direction of the driving axis, that is, the distance between the first pin element 301 and the second pin element 302 is changed to drive the deformation of the articulated quadrilateral.

In one embodiment, the inner threaded rod 91 has a limiting surface 93 extending along a length direction thereof and disposed on an outer peripheral side thereof, wherein the limiting member 92 includes:

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

and the limiting rod 95 is fixedly arranged on the limiting seat 94 and abuts against the limiting surface 93.

In this embodiment, the limit surface 93 is a flat surface provided on the outer peripheral side of the internally threaded rod 91, and the internally threaded rod 91 does not rotate together but moves linearly when the externally threaded rod 9 rotates in the threaded hole by the cooperation of the limit surface 93 and the slide hole.

In this embodiment, gag lever post 95 includes threaded portion 951 of threaded connection on spacing seat 94, set firmly on threaded portion 951 and be hemispherical bellying 952 through compression spring 953, it is specific, threaded portion 951 end is provided with the draw-in groove 954 that supplies compression spring 953 to imbed, compression spring 953 one end sets firmly in draw-in groove 954 bottom, the other end sets firmly in bellying 952, make bellying 952 can slide and stretch out at least part from draw-in groove 954 opening part in draw-in groove 954, in order to contradict in spacing face 93, spacing face 93 has the distance with the both ends face of female screw rod 91, a sliding distance for spacing internal thread pole 91 on spacing seat 94, when avoiding breaking down at motor 441, female screw rod 91 takes place the condition that drops with spacing seat 94.

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

In this embodiment, since the aperture of the mounting hole is greater than the outer diameter of the pin element, the motor 441 has a certain shaking space, and during the riding process, due to the influence of bumpy road conditions, the motor 441 can shake to a preset degree, so that the purpose of buffering is achieved.

In this embodiment, the P-joint seat 21 is provided with an abutting surface 97 (as shown in fig. 2), the abutting surface 97 abuts against a sidewall of the outer link 41, so that the outer link 41 can abut against the abutting surface 97 to rotate for limiting the position of the outer link 41, the elastic member is preferably 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 with the inner link 4, and the other end is connected with the P-joint seat 21 for limiting the position of the inner link 4.

An embodiment of the present invention further provides a speed-changing bicycle, which includes the electronic derailleur and a bicycle body (not shown), wherein the electronic derailleur is mounted on the bicycle body.

It should be noted that the present application is primarily an improvement in a bicycle rear derailleur and therefore does not specifically describe the bicycle body, and the rear derailleur of the present application is adapted to be mounted on any existing bicycle body that has a shifting function.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electronic derailleur comprising:

a base member (1), the base member (1) being for connection with a frame of a bicycle;

a P joint member (2), the P joint member (2) being connected with the base member (1) by an articulated quadrilateral member;

a chain guide member (3), the P-joint member (2) being rotatably provided at one end of the chain guide member (3);

the articulated quadrilateral member comprises:

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

an outer link (41), both ends of the outer link (41) being rotatably provided to the base member (1) and the P joint member (2), respectively, wherein the outer link (41) is disposed opposite to the inner link (4) in an articulated quadrilateral;

it is characterized by also comprising:

an electric drive (44), the drive axis of the electric drive (44) coinciding with a target diagonal of the articulated quadrilateral for varying the target diagonal length, thereby deforming the articulated quadrilateral;

the power supply (5), the power supply (5) are located in a movable space (42) between the inner connecting rod (4) and the outer connecting rod (41), and the power supply (5) is electrically connected with the electric driving piece (44).

2. The electronic derailleur according to claim 1, wherein said electric drive (44) is connected to said articulated quadrilateral member through a mounting seat (43), said electric power source (5) being mounted on one side of said mounting seat (43), wherein said electric drive (44) comprises:

the motor (441), the said motor (441) is mounted to another side of the said mounting base (43);

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

a mounting member (443), the mounting member (443) being coupled to the output shaft of the motor (441) for reciprocal sliding along the drive axis upon rotation of the output shaft of the motor (441) to vary the length of the target diagonal.

3. The electronic derailleur according to claim 2, wherein said mounting base (43) includes:

a base part (431), wherein the extension axis of the base part (431) is overlapped with the driving axis, and one side of the base part (431) is provided with a yielding groove (435) for the control plate (442) to be embedded;

the bearing part (432), the bearing part (432) is fixedly arranged at one end of the other side of the base part (431), and is provided with a bearing hole (436) for the tail end of the motor (441) to be embedded;

2 clamping parts (433) which are arranged oppositely, wherein the 2 clamping parts (433) are fixedly arranged at the other end of the other side of the base part (431), and a clamping hole (437) for embedding the front end of the motor (441) is formed between the 2 clamping parts (433);

locking portion (434), locking portion (434) with 2 joint portion (433) are connected, are used for the front end embedding of motor (441) will 2 behind joint hole (437) joint portion (433) are connected, in order to press from both sides tightly motor (441).

4. The electronic derailleur according to claim 2, wherein said power source (5) includes:

the battery body (51), the said battery body (51) is connected with said control panel (442) electrically;

the battery shell (52), the battery shell (52) is buckled on one side of the mounting seat (43), and the battery shell (52) is provided with an accommodating cavity for accommodating the battery body (51).

5. The electronic derailleur according to claim 4, wherein said battery housing (52) is removably coupled to said mounting base (43) by a coupling member (45).

6. The electronic derailleur according to claim 5, wherein said 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) comprises:

the limiting block (451) is fixedly arranged at one end of the mounting seat (43), and the limiting block (451) is provided with a matching hole (453) for the first protrusion (6) to be embedded into;

a buckle (452), wherein the buckle (452) is rotatably arranged at the other end of the mounting seat (43) and can be connected with the second protrusion (61) to fasten the battery shell (52) to the mounting seat (43).

7. The electronic derailleur according to claim 6, wherein the other end of the battery housing (52) is provided with an escape groove (53) into which the catch (452) fits, the catch (452) comprising:

the rotating part (7), the rotating part (7) is rotatably connected in the avoiding groove (53);

a joint part (71), wherein the joint part (71) is fixedly arranged at the tail end of the rotating part (7);

the buckling part (72) is fixedly arranged between the rotating part (7) and the connecting part (71) and used for abutting against the second protrusion (61).

8. The electronic derailleur according to claim 7, wherein said second protrusion (61) is provided with a downwardly facing engagement surface (62) inclined toward said battery case (52), and said engagement portion (72) is provided with a press-fit surface (73) that engages said engagement surface (62).

9. The electronic derailleur according to claim 2, wherein: the inner connecting rod (4) and the outer connecting rod (41) are brackets, each bracket comprises a connecting part (100, 200) and 2 wing parts (101, 102, 201, 202) which are fixedly arranged at the opposite ends of the connecting part respectively, and each wing part is rotatably connected with the corresponding position of the base component (1) or the P joint component (2) through corresponding pin elements (301, 302, 303, 304);

wherein the activity space (42) is located between 2 of the brackets, the mounting seat (43) being secured to the distal end of the first pin member (301), and the mounting part (443) being secured to the distal end of the third pin member (303).

10. A variable speed bicycle characterized by: comprising an electronic derailleur according to any one of claims 1-9 and a bicycle body on which said electronic derailleur is mounted.