Hub motor tower footing for lithium battery moped

Abstract

The hub motor tower footing comprises a motor neutron and a ratchet wheel sleeve, one end of the motor neutron is sleeved with the ratchet wheel sleeve, and the inner side of one end of the ratchet wheel sleeve is provided with a first oil seal piece arranged on the outer wall of the motor neutron in a sleeved mode. A one-way rotating structure and a notch steel bowl which are located in the ratchet sleeve are sequentially installed outside the motor neutron, inner teeth meshed with the one-way rotating structure are arranged on the inner side of the ratchet sleeve, and a first bearing which is located on the side edge of the notch steel bowl and used for pressing the notch steel bowl and the end face of the one-way rotating structure is further arranged outside the motor neutron. A second oil sealing piece is arranged at the end, away from the notch steel bowl, of the first bearing, and the outer wall of the first oil sealing piece abuts against the inner wall of the ratchet wheel sleeve. The structure can avoid the situation that rotation is not smooth due to the fact that the later-stage lubricating effect is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power-assisted bicycle accessories, in particular to a lithium battery power-assisted vehicle wheel hub motor tower foundation. BACKGROUND

[0002] Power-assisted bicycle is a new type of two-wheeled vehicle, which belongs to a kind of bicycle, uses battery as auxiliary power source, is installed with motor, and is provided with power-assisted system, can realize the integration of human-powered riding and motor-assisted new type of traffic tool.

[0003] In the field of power-assisted bicycle, motor tower foundation is used for installing motor on one side and flywheel on the other side, and its structure directly affects the installation of flywheel and motor in later period, the internal structure of traditional motor tower foundation structure such as patent application number 201922484347.9 disclosed tower foundation and electric power-assisted bicycle is prone to reduce internal lubrication effect after long time use, so as to cause the problem of unsmooth rotation, and the overall structure is complex, thus improvement is needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a lithium battery power-assisted vehicle wheel hub motor tower foundation to solve the problem of existing motor tower foundation internal structure in the prior art, which is prone to reduce internal lubrication effect after long time use, so as to cause the problem of unsmooth rotation, and the overall structure is complex.

[0005] To achieve the above object, the utility model provides the following technical scheme: a lithium battery power-assisted vehicle wheel hub motor tower foundation, which comprises a motor neutron and a ratchet sleeve, the ratchet sleeve is sleeved on one end of the motor neutron, the inner side of one end of the ratchet sleeve is provided with a first oil seal piece sleeved on the outer wall of the motor neutron, the motor neutron is successively provided with a one-way rotation structure and a notched steel bowl located in the ratchet sleeve, the inner side of the ratchet sleeve is provided with internal teeth engaged with the one-way rotation structure, and the motor neutron is further provided with a bearing one located at the side of the notched steel bowl and used for pressing the notched steel bowl and the end face of the one-way rotation structure, one end of the bearing one away from the notched steel bowl is provided with a second oil seal piece, and the outer wall of the first oil seal piece is in abutment with the inner wall of the ratchet sleeve.

[0006] As a preferred, in order to be able to bear and transmit radial and axial load, and reduce friction by rolling in the ratchet sleeve, thereby reducing energy loss and prolonging the service life of the ratchet sleeve, the inner side of one end of the ratchet sleeve close to the first oil seal piece is provided with a concave ring one, the motor neutron is provided with a ball groove one, the ball groove one and the concave ring one are matched to form a ball groove one, and the ball groove one is circumferentially filled with more than one ball one.

[0007] Preferably, the one-way rotation structure comprises one or more pawls and elastic members; the outer circumferential surface of the other end of the motor rotor is provided with a pawl slot, and the pawl is fixed in the pawl slot by the elastic member.

[0008] Preferably, the pawl slot is provided with a gasket near one end of the notched steel bowl to improve the pressing effect.

[0009] Preferably, in order to further bear and transmit radial and axial loads, reduce friction by rolling in the ratchet sleeve, reduce energy loss and prolong the service life of the ratchet sleeve, the ratchet sleeve is further provided with a ball groove two near the notched steel bowl, the notched steel bowl is provided with a concave ring two on one end surface, the concave ring two cooperates with the ball groove two to form a ball groove two, and the ball groove two is circumferentially provided with one or more ball two.

[0010] Preferably, in order to facilitate installation, the notched steel bowl is provided with a concave ring three at one end away from the one-way rotation structure, and the bearing is partially arranged in the concave ring three.

[0011] In order to facilitate later installation, the inner side of the other end of the motor rotor is provided with a bearing two, and the end surface of the other end of the motor rotor is circumferentially provided with one or more screw mounting holes.

[0012] Preferably, in order to improve the clamping effect on the first oil seal, the motor rotor is provided with a boss, the outer side of the boss is provided with a triangular notch, and the first oil seal is clamped in the triangular notch.

[0013] Preferably, the elastic member is a clasp.

[0014] Preferably, the inner side of the other end of the ratchet sleeve away from the motor rotor is provided with an internal helical tooth.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows: the structure is provided with a first oil seal between the inner side of one end of the ratchet sleeve and the motor rotor, which further improves the sealing performance and prevents the problem of poor rotation caused by reduced lubrication effect after long-term use. The notched steel bowl is used to press the one-way rotation structure on the outer side of the motor rotor, and the bearing arranged in the inner side can ensure the lubrication of rotation. Moreover, the whole structure is simple and convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic view of a hub motor tower base for a lithium electric moped disclosed in Embodiment 1;

[0017] Figure 2An exploded view of a hub motor tower base for a lithium electric moped disclosed in embodiment 1;

[0018] Figure 3 A structure diagram of a one-way rotation structure disclosed in embodiment 1;

[0019] Figure 4 A structure diagram of a ratchet sleeve disclosed in embodiment 1 Figure 1 ;

[0020] Figure 5 A structure diagram of a ratchet sleeve disclosed in embodiment 1 Figure 2 ;

[0021] Figure 6 A partial sectional view of a hub motor tower base for a lithium electric moped disclosed in embodiment 1;

[0022] In the figure: motor rotor 1, pawl groove 101, boss 102, triangular notch 103, ratchet sleeve 2, internal teeth 201, internal helical teeth 202, first oil seal 3, one-way rotation structure 4, notch steel bowl 5, bearing one 6, second oil seal 7, concave ring one 8, ball groove one 9, ball one 10, pawl 401, elastic member 402, gasket 11, ball groove two 12, concave ring two 13, ball two 14, concave ring three 15, bearing two 16, screw mounting hole 17. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0024] Please refer to Figures 1-6 , the present embodiment discloses a hub motor tower base for a lithium electric moped, comprising a motor rotor 1 and a ratchet sleeve 2, the ratchet sleeve 2 is sleeved on one end of the motor rotor 1, the inner side of one end of the ratchet sleeve 2 is provided with a first oil seal 3 sleeved on the outer wall of the motor rotor 1, the motor rotor 1 is sequentially provided with a one-way rotation structure 4 and a notch steel bowl 5 located in the ratchet sleeve 2, the inner side of the ratchet sleeve 2 is provided with internal teeth 201 engaged with the one-way rotation structure 4, the motor rotor 1 is further provided with a bearing one 6 located on the side of the notch steel bowl 5 and used for pressing the notch steel bowl 5 and the end face of the one-way rotation structure 4, the end of the bearing one 6 away from the notch steel bowl 5 is provided with a second oil seal 7, and the outer wall of the first oil seal 3 abuts against the inner wall of the ratchet sleeve 2.

[0025] As preferred, in order to bear and transfer radial and axial loads, and reduce friction by rolling inside the ratchet sleeve 2, thereby reducing energy loss and prolonging the service life of the ratchet sleeve 2, a concave ring 8 is arranged on the inner side of the end of the ratchet sleeve 2 close to the first oil seal 3, a ball groove 9 is arranged outside the motor rotor 1, the ball groove 9 and the concave ring 8 cooperate to form a ball groove 1, and more than one ball 10 is arranged circumferentially in the ball groove 1. The ratchet sleeve 2 is also provided with a ball groove 12 close to the notch steel bowl 5, the notch steel bowl 5 is provided with a concave ring 13 on one end surface, the concave ring 13 and the ball groove 12 cooperate to form a ball groove 2, and more than one ball 14 is arranged circumferentially in the ball groove 2. In order to facilitate installation, a concave ring 15 is arranged on the inner side of the end of the notch steel bowl 5 away from the one-way rotation structure 4, and the bearing 6 is partially arranged in the concave ring 15.

[0026] As preferred, the one-way rotation structure 4 includes more than one pawl 401 and a resilient member 402; a pawl groove 101 is formed on the outer circumferential surface of the other end of the motor rotor 1, the pawl 401 is fixed inside the pawl groove 101 through the resilient member 402, and the resilient member 402 is a circlip.

[0027] As preferred, to improve the pressing effect, the pawl groove 101 is provided with a gasket 11 at one end close to the notch steel bowl 5 to press the pawl 401 in the pawl groove 101.

[0028] As preferred, to facilitate later installation, the inner side of the other end of the motor rotor 1 is provided with a bearing 16, and the end surface of the other end of the motor rotor 1 is provided with more than one screw mounting hole 17 circumferentially, which facilitates later connection with the motor.

[0029] As preferred, in order to improve the clamping effect on the first oil seal 3, a boss 102 is arranged outside the motor rotor 1, the outer side of the boss 102 is provided with a triangular notch 103, and the first oil seal 3 is clamped in the triangular notch 103. By arranging the triangular notch 103, the limiting and fixing effect of the first oil seal 3 is realized, avoiding the influence of oil leakage caused by random displacement.

[0030] As preferred, the inner side of the end of the ratchet sleeve 2 away from the motor rotor 1 is provided with an internal helical tooth 202, which facilitates threaded connection when connecting with other components later.

[0031] The structure further improves the sealing performance by arranging the first oil seal 3 on the inner side of one end of the ratchet sleeve 2 relative to the motor rotor 1, and the problem of unsmooth rotation due to reduced lubrication effect does not occur in the interior after long time use, the one-way rotation structure 4 is pressed against the motor rotor 1 by the notched steel bowl 5, the bearing one 6 arranged in the interior can ensure the lubrication of rotation, and the whole structure is simpler and easier to install.

[0032] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hub motor tower for a lithium electric moped, comprising a motor stator (1) and a ratchet sleeve (2) sleeved outside one end of the motor stator (1), characterized in that, The inner side of one end of the ratchet sleeve (2) is provided with a first oil seal (3) sleeved on the outer wall of the motor rotor (1), the motor rotor (1) is sequentially provided with a one-way rotation structure (4) located in the ratchet sleeve (2) and a notch steel bowl (5), the inner side of the ratchet sleeve (2) is provided with internal teeth (201) engaged with the one-way rotation structure (4), the motor rotor (1) is further provided with a bearing one (6) located at the side of the notch steel bowl (5) and used for pressing the notch steel bowl (5) and the end face of the one-way rotation structure (4), the one end of the bearing one (6) away from the notch steel bowl (5) is provided with a second oil seal (7), and the outer wall of the first oil seal (3) is abutted against the inner wall of the ratchet sleeve (2).

2. The hub motor tower base for lithium electric scooter of claim 1, wherein, The inner side of one end of the ratchet sleeve (2) is provided with a first oil seal (3) sleeved on the outer wall of the motor rotor (1), the motor rotor (1) is sequentially provided with a one-way rotation structure (4) located in the ratchet sleeve (2) and a notch steel bowl (5), the inner side of the ratchet sleeve (2) is provided with internal teeth (201) engaged with the one-way rotation structure (4), the motor rotor (1) is further provided with a bearing one (6) located at the side of the notch steel bowl (5) and used for pressing the notch steel bowl (5) and the end face of the one-way rotation structure (4), the one end of the bearing one (6) away from the notch steel bowl (5) is provided with a second oil seal (7), and the outer wall of the first oil seal (3) is abutted against the inner wall of the ratchet sleeve (2).

3. The hub motor tower base for a lithium electric scooter according to claim 1 or 2, characterized in that, The one-way rotation structure (4) comprises one or more than one pawl (401) and an elastic member (402); a pawl groove (101) is formed in the outer circumferential surface of the other end of the motor rotor (1), and the pawl (401) is fixed in the pawl groove (101) by the elastic member (402).

4. The hub motor tower base for lithium electric scooter of claim 3, wherein, The end of the pawl groove (101) close to the notch steel bowl (5) is provided with a gasket (11) for pressing the pawl (401) in the pawl groove (101).

5. The hub motor tower base for lithium electric scooter of claim 3, wherein, The ratchet sleeve (2) is further provided with a ball groove two (12) close to the notch steel bowl (5), the notch steel bowl (5) is provided with a concave ring two (13) on one end face, the concave ring two (13) and the ball groove two (12) cooperate to form a ball groove two, and the ball groove two is circumferentially filled with one or more than one ball two (14).

6. The hub motor tower base for lithium electric scooter according to claim 1 or 2, characterized in that, The end of the notch steel bowl (5) away from the one-way rotation structure (4) is provided with a concave ring three (15), and the bearing one (6) is partially arranged in the concave ring three (15).

7. The hub motor tower base for lithium electric scooter of claim 2, wherein, The inner side of the other end of the motor rotor (1) is provided with a bearing two (16), and one or more than one screw mounting hole (17) is circumferentially arranged on the end face of the other end of the motor rotor (1).

8. The hub motor tower base for lithium electric scooter of claim 2, wherein, The motor rotor (1) is provided with a boss (102), the outer side of the boss (102) is provided with a triangular notch (103), and the first oil seal (3) is clamped in the triangular notch (103).

9. The hub motor tower base for lithium electric scooter of claim 3, wherein, The elastic member (402) is a clasp spring.

10. The hub motor tower base for lithium electric scooter of claim 2, wherein, The inner side of the end of the ratchet sleeve (2) away from the motor rotor (1) is provided with internal helical teeth (202).

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