CN212125409U

CN212125409U - Transmission assembly mechanism of electric bicycle

Info

Publication number: CN212125409U
Application number: CN202020571013.5U
Authority: CN
Inventors: 吴高峰; 张舒
Original assignee: Kunshan Shunyirui Intelligent Technology Co ltd
Current assignee: Kunshan Shunyirui Intelligent Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-12-11
Anticipated expiration: 2030-04-17

Abstract

The utility model provides an electric bicycle's transmission assembly devices belongs to electric bicycle technical field. The assembly connection structure solves the problems that the conventional assembly connection structure of the frame of the existing electric bicycle cannot be exchanged with a middle motor and is inconvenient to use. This electric bicycle's transmission assembly devices, including setting firmly in the motor cabinet of frame middle part lower extreme intersection, be equipped with the assembly positioning piece in the motor cabinet, the assembly positioning piece is used for electric bicycle main shaft to rotate the erection joint, is provided with between assembly positioning piece and the motor cabinet to enable the assembly positioning piece fast loading and unloading's assembly connection structure in the motor cabinet, still is provided with on the motor cabinet to shelter from the closing cap structure of hiding in the motor cabinet with the assembly positioning piece. The utility model has the advantages of reasonable design, it is stable, the installation of conveniently changing can reach the purpose of putting motor and conventional main shaft in and exchanging the installation, and structural stability is high, and loading and unloading are convenient, and the processing and the production uniform cost of frame are lower, convenient assembly.

Description

Transmission assembly mechanism of electric bicycle

Technical Field

The utility model belongs to the technical field of electric bicycle transmission system, a electric bicycle's transmission assembly devices is related to.

Background

With the popularization of electric bicycles, the overall structural design and the transmission system structure thereof have been developed greatly.

And (4) assembling a special motor base for assembling and connecting the centrally-mounted motor with a positioning shaft sleeve of the conventional main shaft in a switching way. Customers have more choices in the same frame, and can freely select and match the electric bicycle type prepared by the middle motor or the conventional main shaft, thereby expanding the requirements of different customers in the market.

The conventional main shaft is in the same position with the center shaft of the middle motor after being assembled in the positioning shaft sleeve, and the electric bicycle frame is the same, so that management and control are facilitated, and batch production of a production line is facilitated.

The traditional assembling and connecting structure of the positioning shaft sleeve and the electric bicycle frame cannot achieve the purpose of interchange with the middle motor, and is inconvenient to assemble and use.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, can reach the purpose of exchanging with the middle motor, connection structure is stable, loading and unloading are convenient, the lower electric bicycle's of manufacturing cost transmission assembly devices.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an electric bicycle's transmission assembly devices, is including setting firmly the motor cabinet in frame middle part lower extreme intersection, its characterized in that, the motor cabinet in be equipped with the assembly setting element, the assembly setting element be used for electric bicycle main shaft to rotate the assembly connection, assembly setting element and motor cabinet between be provided with the assembly connection structure that enables the assembly setting element fast loading and unloading in the motor cabinet, the motor cabinet on still be provided with and can shelter from the closing cap structure of hiding in the motor cabinet with the assembly setting element.

The transmission assembly mechanism of the electric bicycle is mainly characterized in that an assembly connection structure is arranged between an assembly positioning part and a motor base, the assembly positioning part is quickly assembled and disassembled in the motor base through the assembly connection structure, the assembly positioning part is used for rotating and assembling and connecting a main shaft of the electric bicycle, and when the assembly positioning part is disassembled on the motor base, a middle motor can be quickly assembled on the motor base, so that the purpose of quick exchange with the middle motor is achieved; the motor base is connected with a middle motor.

In the transmission assembling mechanism of the electric bicycle, the assembling positioning part is a positioning shaft sleeve, and a central shaft hole of the positioning shaft sleeve is used for assembling a main shaft of the electric bicycle. The positioning shaft sleeve is detachably connected with the frame, so that the positioning shaft sleeve is convenient to assemble and disassemble on the frame, and can be replaced to a middle-mounted motor through assembling and disassembling of the positioning shaft sleeve on the motor base; after the middle motor is disassembled, the positioning shaft sleeve can be assembled on the motor base, the purpose of quick exchange between the middle motor and the conventional transmission main shaft can be achieved, and the production is convenient.

In foretell electric bicycle's transmission assembly devices, assembly connection structure on the outer wall that includes the location axle sleeve circumference interval distribution have more than two tie-beams that outwards extend the setting, the free end of every tie-beam all is provided with connecting portion, the motor cabinet on be provided with the installation hole site more than two along the girth direction interval of motor cabinet, tie-beam and installation hole site one-to-one distribute, when the location axle sleeve was located the motor cabinet, connecting portion on this motor cabinet all were in the installation hole site that corresponds and linked firmly through the bolt spiral. The purpose of setting up like this makes the location axle sleeve connect stably on the motor cabinet, ensures the electric bicycle main shaft and rotates the stability of assembly connection on the location axle sleeve, long service life.

In foretell electric bicycle's transmission assembly devices, the motor cabinet including be used for strengthening frame low tube, well union coupling's motor cabinet body, the downward arc bending of rear end of motor cabinet body be used for linking firmly back fork under the frame, the both sides of motor cabinet body have the extension limit portion of bending down formation, the equal axial relative distribution in every installation hole site is on two extension limit portions. The motor base body is fixedly connected with the lower tube, the middle tube and the lower rear fork of the frame in a welding mode and used for strengthening the mechanical strength of the intersection of the lower tube, the middle tube and the lower end of the lower rear fork.

In the transmission assembling mechanism of the electric bicycle, three connecting beams are circumferentially distributed on the outer wall of the positioning shaft sleeve at intervals, the three connecting beams are respectively an upper edge beam, a middle beam and a lower edge beam, the upper edge beam and the lower edge beam are in tangent fit with the positioning shaft sleeve, the middle beam is positioned between the upper edge beam and the lower edge beam and is radially positioned in the middle of the positioning shaft sleeve, the two extending edges are provided with three mounting hole positions which are respectively an upper hole position, a middle hole position and a lower hole position, the upper hole position is positioned in the middle of the two extending edges, the lower hole position is positioned at the rear ends of the two extending edges, and the middle hole position is positioned at the bent position of the rear ends of the two extending edges; when the positioning shaft sleeve is positioned in the motor base, the connecting part of the upper boundary beam is correspondingly assembled and fixedly connected with the upper hole position, the connecting part of the middle beam is correspondingly assembled and fixedly connected with the middle hole position, and the connecting part of the lower boundary beam is correspondingly assembled and fixedly connected with the lower hole position. The purpose that sets up like this is to ensure the joint strength of location axle sleeve on the motor cabinet, makes location axle sleeve and electric bicycle main shaft when swivelling joint cooperates, stable in structure, and life is strong.

In foretell electric bicycle's transmission assembly devices, the connecting portion of roof side rail between the connecting portion of intermediate beam set firmly and strengthen boundary beam one, the connecting portion of intermediate beam between and the connecting portion of roof side rail set firmly and strengthen boundary beam two, roof side rail, strengthen boundary beam one and intermediate beam form triangular support structure, intermediate beam, strengthen boundary beam two and roof side rail form triangular support structure. The design accords with the principle of triangle stability like this, has characteristics firm, withstand voltage.

In foretell electric bicycle's transmission assembly devices, the closing cap structure include left protecting cover and right protecting cover, left protecting cover on be provided with left axle hole site, right protecting cover on be provided with right axle hole site, left protecting cover, right protecting cover when the both ends of location axle sleeve link firmly relatively, the central shaft hole and the right axle hole site of this left axle hole site, location axle sleeve are same axial distribution. The purpose that sets up like this is the stability of the structure of guaranteeing the location axle sleeve, has fine guard action, and left protecting cover, right protecting cover can ensure that the location axle sleeve is waterproof, sand control, anticorrosion.

In foretell electric bicycle's transmission assembly devices, location axle sleeve, roof side rail, all be provided with the auxiliary connection position on middle beam and the roof side rail, left side protecting cover and right protecting cover all link firmly location axle sleeve, roof side rail relatively through the bolt, in the auxiliary connection position on middle beam and the roof side rail, when left side protecting cover and right protecting cover link firmly relatively at the both ends of location axle sleeve, this left side protecting cover, right side protecting cover both and the extension limit portion overlap joint cooperation that corresponds. Except the assembly space of the positioning shaft sleeve, the space between the left protecting cover and the right protecting cover forms a circuit storage space.

In foretell electric bicycle's transmission assembly devices, the left axle hole site of left protecting cover on be provided with the assembly groove that is used for installing limit side formula sensor, the notch of assembly groove and the left end face of location axle sleeve support and lean on the cooperation. The purpose that sets up like this is that make things convenient for avris formula sensor to install convenient to use in the assembly groove of the left axle hole site of left protecting cover.

In the transmission assembling mechanism of the electric bicycle, the positioning shaft sleeve is provided with a wire passing hole which is radially formed and used for assembling the wiring of the torque sensor and the speed sensor. The purpose of setting up like this is to make things convenient for moment formula sensor, speed sensor wiring, walks the line, convenient to use.

This left protecting cover and right protecting cover among electric bicycle's transmission assembly devices are located the both ends of location axle sleeve, and when the both ends at the location axle sleeve linked firmly mutually, this left protecting cover, right protecting cover both with the extension limit portion overlap joint cooperation that corresponds, except the assembly space of location axle sleeve, this left protecting cover, space between the right protecting cover is equipped with the assembly space of assembly controller, can directly place the controller in this space, be provided with the screw position on the right protecting cover simultaneously, this screw position is used for linking firmly the controller, the controller assembly can effectively accelerate the heat to give off when in right protecting cover.

Compared with the prior art, this electric bicycle's transmission assembly devices's advantage does: structural design is reasonable, stable, and the installation of conveniently changing can reach the purpose of putting motor and conventional main shaft in and exchanging the installation, and structural stability is high, and loading and unloading are convenient, and the processing of frame and the unified cost of production are lower, convenient assembly.

Drawings

Fig. 1 is an exploded perspective view of the transmission assembly mechanism of the electric bicycle.

Fig. 2 is a schematic perspective view of the transmission assembly mechanism of the electric bicycle.

FIG. 3 is a perspective view of the transmission assembly mechanism of the electric bicycle with the left cover open.

Fig. 4 is a schematic view of a three-dimensional structure in which a motor base is fixedly connected in a frame in the transmission assembly mechanism of the electric bicycle.

Fig. 5 is a schematic view of the three-dimensional structure of the transmission assembly mechanism of the electric bicycle, wherein the positioning shaft sleeve, the left protecting cover and the right protecting cover are detached and the middle motor is additionally arranged.

In the figure, 1, a frame; 1a, a lower tube; 1b, a middle pipe; 1c, a lower rear fork; 2. a motor base; 3. positioning the shaft sleeve; 4. a central shaft hole; 5. a connecting portion; 6. mounting hole sites; 6a, an upper hole position; 6b, a mesopore position; 6c, a lower hole position; 7. a motor base body; 8. extending the edge part; 9. a roof side rail; 10. a center sill; 11. a lower edge beam; 12. reinforcing the edge beam I; 13. reinforcing the edge beam II; 14. a left protective cover; 15. a right protective cover; 16. a left shaft hole site; 17. a right axis hole location; 18. an auxiliary connection bit; 19. assembling a groove; 20. a wire passing hole; 21. a motor is arranged in the middle; 22. and (6) positioning screws.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the transmission assembly mechanism of the electric bicycle mainly comprises a motor base 2 fixedly arranged at the intersection of the lower end of the middle part of a frame 1, an assembly positioning part is arranged in the motor base 2 and used for rotating, assembling and connecting a main shaft of the electric bicycle, and an assembly connection structure capable of enabling the assembly positioning part to be rapidly assembled and disassembled in the motor base 2 is arranged between the assembly positioning part and the motor base 2; during actual design, the assembling positioning piece is a positioning shaft sleeve 3, and a central shaft hole 4 of the positioning shaft sleeve 3 is used for being rotatably assembled and connected with a main shaft of the electric bicycle; in actual manufacturing, the specific implementation of the assembly connection structure is as follows: the circumference interval distribution has three tie-beams that outwards extend the setting on the outer wall of location axle sleeve 3, and the free end of every tie-beam all is provided with connecting portion 5, is provided with three installation hole site 6 along the girth direction interval of motor cabinet 2 on the motor cabinet 2, and tie-beam and 6 one-to-one distribution of installation hole site, when location axle sleeve 3 was located motor cabinet 2, connecting portion 5 on this motor cabinet 2 all was in the installation hole site 6 that corresponds and linked firmly through the bolt spiral.

Specifically speaking: the three connecting beams are respectively an upper edge beam 9, a middle beam 10 and a lower edge beam 11, the upper edge beam 9 and the lower edge beam 11 are in tangential fit with the positioning shaft sleeve 3, and the middle beam 10 is positioned between the upper edge beam 9 and the lower edge beam 11 and is radially positioned in the middle of the positioning shaft sleeve 3; the motor base 2 comprises a motor base body 7 for reinforcing connection of a lower pipe 1a and a middle pipe 1b of a frame 1, the rear end of the motor base body 7 is bent downwards in an arc shape for fixedly connecting a lower rear fork 1c of the frame 1, two sides of the motor base body 7 are provided with extension side parts 8 formed by bending downwards, and each installation hole position 6 is axially and relatively distributed on the two extension side parts 8; the three mounting hole sites 6 are respectively an upper hole site 6a, a middle hole site 6b and a lower hole site 6c, the upper hole site 6a is positioned in the middle position of the two extending edge parts 8, the lower hole site 6c is positioned at the rear ends of the two extending edge parts 8, and the middle hole site 6b is positioned at the bending position of the rear ends of the two extending edge parts 8; when the positioning shaft sleeve 3 is positioned in the motor base 2, the connecting part 5 of the upper side beam 9 is correspondingly assembled and fixedly connected with the upper hole site 6a, the connecting part 5 of the middle beam 10 is correspondingly assembled and fixedly connected with the middle hole site 6b, and the connecting part 5 of the lower side beam 11 is correspondingly assembled and fixedly connected with the lower hole site 6 c; in order to strengthen the mechanical strength of each connecting beam, a first reinforcing side beam 12 is fixedly arranged between the connecting part 5 of the upper side beam 9 and the connecting part 5 of the middle beam 10, a second reinforcing side beam 13 is fixedly arranged between the connecting part 5 of the middle beam 10 and the connecting part 5 of the lower side beam 11, the upper side beam 9, the first reinforcing side beam 12 and the middle beam 10 form a triangular supporting structure, and the middle beam 10, the second reinforcing side beam 13 and the lower side beam 11 form a triangular supporting structure.

The motor base 2 is also provided with a sealing cover structure which can shield the assembly positioning piece from being hidden in the motor base 2. In actual manufacturing, the specific implementation of the cover structure is as follows: mainly constitute by left protecting cover 14 and right protecting cover 15, be provided with left axle hole site 16 on the left protecting cover 14, be provided with right axle hole site 17 on the right protecting cover 15, when left protecting cover 14, right protecting cover 15 linked firmly relatively at the both ends of location axle sleeve 3, this left axle hole site 16, the central shaft hole 4 and the right axle hole site 17 of location axle sleeve 3 were same axial distribution. The specific connection mode of the left protecting cover 14 and the right protecting cover 15 on the positioning shaft sleeve 3 is as follows: the positioning shaft sleeve 3, the upper edge beam 9, the middle beam 10 and the lower edge beam 11 are respectively provided with an auxiliary connecting position 18, the left protecting cover 14 and the right protecting cover 15 are respectively and fixedly connected with the positioning shaft sleeve 3 and the upper edge beam 9 through bolts, and in the auxiliary connecting positions 18 on the middle beam 10 and the lower edge beam 11, when the left protecting cover 14 and the right protecting cover 15 are relatively and fixedly connected at two ends of the positioning shaft sleeve 3, the left protecting cover 14 and the right protecting cover 15 are in lap joint fit with the corresponding extending side part 8 of the motor base body 7; an assembly groove 19 for mounting the side sensor is arranged on a left shaft hole 16 of the left protective cover 14, and a notch of the assembly groove 19 is abutted and matched with the left end face of the positioning shaft sleeve 3; the positioning shaft sleeve 3 is provided with a wire through hole 20 which is radially arranged, and the wire through hole 20 is used for connecting a torque sensor and a speed sensor in a wire passing manner; except the assembly space of locating shaft sleeve 3 between left protecting cover 14, right protecting cover 15, the space between this left protecting cover 14, right protecting cover 15 is used for assembling the controller, is provided with screw position 22 on right protecting cover 15, and this screw position 22 is used for linking firmly the controller.

Example two

As shown in fig. 5, the positioning sleeve 3, the left protecting cover 14 and the right protecting cover 15 are quickly disassembled in the motor base 2, so that the central motor 21 can be quickly assembled in the motor base 2, and the purpose of quick exchange with the central motor 21 is achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the frame 1 is used more herein; a lower tube 1 a; a middle tube 1 b; a lower rear fork 1 c; a motor base 2; a positioning shaft sleeve 3; a central shaft hole 4; a connecting portion 5; mounting hole sites 6; an upper hole site 6 a; a middle hole site 6 b; a lower hole site 6 c; a motor base body 7; an extended edge portion 8; a roof side rail 9; a center sill 10; a lower edge beam 11; a first reinforcing edge beam 12; a second reinforcing edge beam 13; a left protective cover 14; a right protective cover 15; a left axle hole site 16; a right shaft hole site 17; an auxiliary connection bit 18; a fitting groove 19; a wire passing hole 20; a mid-motor 21; screw position 22, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides an electric bicycle's transmission assembly devices, is including setting firmly motor cabinet (2) in frame (1) middle part lower extreme intersection, its characterized in that, motor cabinet (2) in be equipped with the assembly setting element, the assembly setting element be used for electric bicycle main shaft to rotate assembly connection, assembly setting element and motor cabinet (2) between be provided with and enable the assembly setting element fast loading and unloading's in motor cabinet (2) assembly connection structure, motor cabinet (2) on still be provided with and can shelter from the closing cap structure of hiding in motor cabinet (2) with the assembly setting element.

2. The transmission assembling mechanism of the electric bicycle according to claim 1, wherein the assembling positioning member is a positioning sleeve (3), and the central shaft hole (4) of the positioning sleeve (3) is used for assembling a main shaft of the electric bicycle.

3. The transmission assembling mechanism of the electric bicycle as claimed in claim 2, wherein the assembling connection structure comprises more than two connecting beams extending outwards and distributed on the outer wall of the positioning shaft sleeve (3) at intervals in the circumferential direction, the free end of each connecting beam is provided with a connecting part (5), the motor base (2) is provided with more than two mounting hole sites (6) at intervals along the circumferential direction of the motor base (2), the connecting beams and the mounting hole sites (6) are distributed in a one-to-one correspondence manner, and when the positioning shaft sleeve (3) is located in the motor base (2), the connecting parts (5) on the motor base (2) are all located in the corresponding mounting hole sites (6) and are fixedly connected through bolts in a spiral manner.

4. The transmission assembling mechanism of the electric bicycle as claimed in claim 3, wherein the motor base (2) comprises a motor base body (7) for reinforcing the connection of the lower tube (1a) and the middle tube (1b) of the frame (1), the rear end of the motor base body (7) is bent downwards in an arc shape for fixedly connecting the lower rear fork (1c) of the frame (1), extension side portions (8) formed by bending downwards are arranged on two sides of the motor base body (7), and each mounting hole position (6) is axially and relatively distributed on the two extension side portions (8).

5. The transmission assembly mechanism of the electric bicycle according to claim 4, wherein three connecting beams are circumferentially distributed on the outer wall of the positioning shaft sleeve (3) at intervals, the three connecting beams are respectively an upper side beam (9), a middle beam (10) and a lower side beam (11), the upper side beam (9) and the lower side beam (11) are in tangent fit with the positioning shaft sleeve (3), the middle beam (10) is positioned between the upper side beam (9) and the lower side beam (11) and is radially positioned at the middle position of the positioning shaft sleeve (3), the two extension side portions (8) are provided with three mounting hole sites (6), the three mounting hole sites (6) are respectively an upper hole site (6a), a middle hole site (6b) and a lower hole site (6c), the upper hole site (6a) is positioned at the middle position of the two extension side portions (8), the lower hole site (6c) is positioned at the rear ends of the two extension side portions (8), the middle hole position (6b) is positioned at the bending part of the rear ends of the two extending edge parts (8); when the positioning shaft sleeve (3) is positioned in the motor base (2), the connecting part (5) of the upper side beam (9) and the upper hole site (6a) are correspondingly assembled and fixedly connected, the connecting part (5) of the middle pipe (1b) and the middle hole site (6b) are correspondingly assembled and fixedly connected, and the connecting part (5) of the lower side beam (11) and the lower hole site (6c) are correspondingly assembled and fixedly connected.

6. The transmission assembling mechanism of the electric bicycle as claimed in claim 5, wherein a first reinforcing side beam (12) is fixedly arranged between the connecting portion (5) of the upper side beam (9) and the connecting portion (5) of the middle beam (10), a second reinforcing side beam (13) is fixedly arranged between the connecting portion (5) of the middle beam (10) and the connecting portion (5) of the lower side beam (11), the upper side beam (9), the first reinforcing side beam (12) and the middle beam (10) form a triangular supporting structure, and the middle beam (10), the second reinforcing side beam (13) and the lower side beam (11) form a triangular supporting structure.

7. The transmission assembling mechanism of the electric bicycle according to claim 5, wherein the cover structure comprises a left protecting cover (14) and a right protecting cover (15), the left protecting cover (14) is provided with a left shaft hole site (16), the right protecting cover (15) is provided with a right shaft hole site (17), when the two ends of the left protecting cover (14) and the right protecting cover (15) are relatively fixedly connected, the left shaft hole site (16), the center shaft hole site (4) and the right shaft hole site (17) of the positioning shaft sleeve (3) are distributed in the same axial direction.

8. The transmission assembling mechanism of the electric bicycle according to claim 7, wherein the positioning shaft sleeve (3), the top side beam (9), the middle beam (10) and the bottom side beam (11) are respectively provided with an auxiliary connecting position (18), the left protecting cover (14) and the right protecting cover (15) are respectively and relatively and fixedly connected with the positioning shaft sleeve (3) and the top side beam (9) through bolts, and in the auxiliary connecting positions (18) on the middle beam (10) and the bottom side beam (11), when the left protecting cover (14) and the right protecting cover (15) are relatively and fixedly connected at two ends of the positioning shaft sleeve (3), the left protecting cover (14) and the right protecting cover (15) are in lap joint with the corresponding extending edge portions (8).

9. The transmission assembly mechanism of the electric bicycle as claimed in claim 8, wherein the left shaft hole (16) of the left protecting cover (14) is provided with an assembly groove (19) for mounting the edge-side sensor, and the notch of the assembly groove (19) is in abutting fit with the left end face of the positioning sleeve (3).

10. The transmission assembling mechanism of the electric bicycle as claimed in claim 2, 3, 4 or 5, wherein the positioning sleeve (3) has a wire through hole (20) formed in a radial direction, and the wire through hole (20) is used for assembling a torque sensor and a speed sensor.