CN213083397U

CN213083397U - Electric balance car

Info

Publication number: CN213083397U
Application number: CN202021693656.3U
Authority: CN
Inventors: 吕剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-04-30
Anticipated expiration: 2030-08-14

Abstract

The utility model provides an electrodynamic balance car, it includes left frame, right frame and will control the slewing mechanism that the frame rotates the connection, left side frame includes left casing and left wheel, right side frame includes right casing and right wheel, slewing mechanism is including running through locating pivot in the casing about, in proper order the cover locate the epaxial oilless bearing of pivot and bearing holder, the one end and the left casing fixed connection of pivot, the other end rotate with right casing through oilless bearing and bearing holder and be connected, the bearing holder with right side casing fixed connection. The electric balance car of the utility model avoids the deformation of the oilless bearing by arranging the oilless bearing and the bearing retainer for maintaining the roundness of the oilless bearing outside the rotating shaft, so that the rotating shaft can flexibly rotate, and the abrasion of the rotating shaft and other parts is reduced; in addition, the oilless bearing is selected, so that the production cost is greatly reduced.

Description

Electric balance car

Technical Field

The utility model relates to a double round balance car field especially relates to an electrodynamic balance car.

Background

The electric balance car is convenient to carry, simple to operate and good in stability, and is gradually concerned and loved by young people. The two-wheeled electrodynamic balance car adopts two wheels to support, and the battery power supply, brushless motor drive, and single chip microcomputer control in addition, attitude sensor gathers angular velocity and angle signal, and the balance of common coordinated control automobile body only relies on the change of human focus alright realize actions such as start, acceleration, speed reduction, the stopping of vehicle.

The bearing mounting modes generally adopted in the existing electric balance car rotating mechanism are as follows: the one is to adopt whole shaft hole, and deep groove ball bearing or the oil free bearing of cover tube form can be chooseed for use to the bearing, and above-mentioned bearing all can be well with whole shaft hole cooperation installation, and the effect is better. The other mode is that the upper and lower half slot shaft hole is adopted, deep groove ball bearing and this shaft hole installation effect are better, but deep groove ball bearing cost is higher, and the size requirement to the rotating shaft in the slewing mechanism of balance car is higher if use deep groove ball bearing moreover, and the bearing can't be put into when the axle size is too big, and the axle size is too little can cause the race inner circle, consequently needs the counter shaft to grind the excircle and handle, operates complicacy. In addition, if the oilless bearing is directly matched with the upper and lower semicircular groove shaft holes, due to the structure of the oilless bearing, the roundness of the oilless bearing cannot be maintained sufficiently, the upper and lower semicircular grooves in an actual product have the problems of deformation and tolerance, the oilless bearing is likely to deform, and the rotation of the rotating shaft is not flexible, so that an external structure is required for maintaining the roundness of the oilless bearing.

Therefore, it is necessary to design an electric balance car to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pivot rotates nimble and lower electrodynamic balance car of cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an electrodynamic balance car, its includes left frame, right frame and will control the slewing mechanism that the frame rotates the connection, left side frame includes left casing and left wheel, right side frame includes right casing and right wheel, slewing mechanism is including running through locating pivot in the casing about, overlap in proper order and locate the epaxial oilless bearing of pivot and bearing holder, the one end and the left casing fixed connection of pivot, the other end is connected with right casing rotation through oilless bearing and bearing holder, the bearing holder with right casing fixed connection.

As the utility model discloses further modified technical scheme, the bearing holder is the ring form, slewing mechanism still includes the holder mount pad, and the bearing holder is fixed between right casing and holder mount pad.

As a further improved technical scheme of the utility model, left side casing is formed by upper left casing and left lower casing lock joint, right side casing is formed by upper right casing and right lower casing lock joint, the holder mount pad is located the pivot below and fixes on the upper right casing.

As the utility model discloses further modified technical scheme, the semicircle pipe that the holder mount pad set up for following the pivot axial, be equipped with in the holder mount pad with the half slot that the bearing holder matches, the half slot both ends are equipped with the mounting panel, the holder mount pad passes through mounting panel and bolt assembly are fixed with right casing.

As the utility model discloses further modified technical scheme, right side casing with oilless bearing and bearing holder cooperation department are equipped with the casing half slot, and the bearing holder is fixed between the half slot of casing half slot and holder mount pad.

As the utility model discloses further modified technical scheme, the width of bearing holder is less than oilless bearing's width, the half slot edge be equipped with oilless bearing edge complex step, the step restriction oilless bearing is at the ascending removal of axial.

As a further improved technical scheme of the utility model, the quantity of oilless bearing and bearing retainer is two respectively.

As the utility model discloses further modified technical scheme, bolt assembly is passed through in the pivot and the fixing is on left casing, still be equipped with the power supply unit who is used for providing electric energy in the left side casing.

As a further improved technical scheme of the utility model, radially be fixed with the spacer pin in the pivot, seted up on the casing of the right side with the spacing hole of spacer pin complex, the tip of spacer pin stretches into spacing hole, and can spacing downthehole swing.

As the utility model discloses further modified technical scheme, slewing mechanism still includes the central supporting part, the central supporting part is cylindricly, the pivot is worn to locate the central supporting part and quilt the central supporting part supports, the one end of central supporting part stretch into left casing and with left casing fixed mounting, the other end of central supporting part stretches into right casing.

According to the technical scheme, the electric balance car of the utility model has the advantages that the oilless bearing and the bearing retainer for maintaining the roundness of the oilless bearing are arranged outside the rotating shaft, so that the deformation of the oilless bearing is avoided, the rotating shaft can flexibly rotate, and the abrasion of the rotating shaft and other parts is reduced; in addition, the oilless bearing is selected, so that the production cost is greatly reduced.

Drawings

Fig. 1 is a perspective view of the electric balance car of the present invention.

Fig. 2 is an exploded view of the electric balance car of fig. 1.

Fig. 3 is a sectional view of the electric balance car of fig. 1.

Fig. 4 is an enlarged view of a circled portion in fig. 3.

Fig. 5 is a perspective view of the electric balance car of fig. 1 with the right pedal omitted.

Fig. 6 is a sectional view of the electric balance car of fig. 5 taken along the direction a-a.

Fig. 7 is a perspective view of the bearing cage of fig. 2.

Fig. 8 is a perspective view of the holder mounting base of fig. 2.

Fig. 9 is a perspective view of the central support portion of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, the present invention provides an electric balance car 100, which includes a left frame 1, a right frame 2, and a rotating mechanism 3 rotatably connecting the left frame 1 and the right frame 2. The left frame 1 includes a left housing 11 and a left wheel 12 mounted on the left side of the left housing 11, the left housing 11 is formed by fastening a left upper housing 111 and a left lower housing 112, and a receiving cavity is formed between the two housings. Similarly, the right frame 2 includes a right housing 21 and a right wheel 22 mounted on the right side of the right housing 21, and the right housing 21 is formed by fastening a right upper housing 211 and a right lower housing 212, with a receiving cavity formed therebetween. Left and

right pedals

13 and 23 are provided above left and

right housings

11 and 21.

A power supply assembly 14 for providing electric energy is further arranged in the left shell 11, the power supply assembly 14 is electrically connected with the left wheel 12, the right wheel 22, the left wheel 12 and the right wheel 22 are both provided with hub motors, and the hub motors are driven by the power supply assembly 14 to operate. The structure and the working principle of the hub motor are the prior art and are not repeated.

The rotating mechanism 3 includes a rotating shaft 31 penetrating the left housing 11 and the right housing 21, an oilless bearing 32 and a bearing holder 33 sequentially sleeved on the rotating shaft 31, a bolt assembly 34, a limit pin 35, a holder mounting seat 36, and a central support portion 37, so as to realize the relative rotation of the left housing 11 and the right housing 21. The mutual close position of left casing 11 and right casing 21 all forms the narrowing mouth, and pivot 31 both ends pass respectively and stretch into left casing 11 and right casing 21 in the cooperation installation.

Referring to fig. 2 and 3, one end of the rotating shaft 31 is fixedly connected to the left housing 11 through a bolt assembly 34. The bolt assembly 34 includes a bolt and a nut which are matched with each other, the rotating shaft 31 is in a hollow cylindrical tube shape, a mounting hole for the bolt to pass through is formed in the rotating shaft, and one end of the rotating shaft 31 is fixed on the upper left shell 111 through the mounting hole by the bolt assembly 34. Preferably, the bolt assemblies 34 are arranged in two groups side by side, so that the fixing effect is good, and the rotating shaft 31 is prevented from swinging in the horizontal direction.

Referring to fig. 2, 3 and 7, the other end of the rotating shaft 31 is rotatably connected to the right housing 21 through an oilless bearing 32 and a bearing holder 33, and the bearing holder 33 is fixedly connected to the right housing 21. Specifically, the oilless bearing 32 is tightly sleeved on the outer side of the rotating shaft 31, and the bearing retainer 33 and the retainer mounting seat 36 are sequentially arranged on the outer side of the oilless bearing 32. The oilless bearing 32 is preferably made by rolling a mixture of polytetrafluoroethylene and lead rolled on the surface layer with a steel plate as a base, spherical bronze powder sintered in the middle layer, and a spherical bronze powder sintered in the surface layer. The bearing holder 33 is annular, and the bearing holder 33 is fixed between the right housing 21 and the holder mounting seat 36.

The bearing retainer 33 is a circular ring with a width smaller than that of the oilless bearing 32, and a plurality of holes 331 are formed in the bearing retainer 33 along the circumferential direction, so that heat dissipation of the bearing retainer 33 is facilitated, and the service life of the bearing retainer 33 and the oilless bearing 32 is prolonged. The number of the oilless bearing 32 and the bearing holder 33 is 2.

Referring to fig. 4 and 8, the holder mounting seat 36 extends along the axial direction of the rotating shaft 31 and is simultaneously engaged with 2 bearing holders 33. The holder mounting seat 36 is a semicircular tube disposed along the axial direction of the rotating shaft 31, and specifically, the holder mounting seat 36 includes a body 365 in the shape of a semicircular tube, recessed

semicircular grooves

362 and 364 disposed in the body 365, and two sets of

mounting plates

361 and 363 extending outward from two ends of the

semicircular grooves

362 and 364. The holder mounting base 36 is fixed to the right housing 21 by

mounting plates

361 and 363 and a bolt assembly.

During installation, the holder installation base 36 is matched with the rotating shaft 31 and the bearing holder 33 upwards and is fixedly installed with the upper right shell 211 through the bolt assemblies arranged on the two

installation parts

361 and 363, and at the moment, the two bearing holders 33 are positioned in the two recessed

semicircular grooves

362 and 364 and are tightly matched with the upper right shell 211 and the holder installation base 36. Preferably, a housing semicircular groove is provided at a mating portion of the right housing 21 with the oilless bearing 32 and the bearing holder 33, and the bearing holder 33 is fixed between the housing semicircular groove and the

semicircular grooves

362 and 364 of the holder mounting seat 36. With this arrangement, the position of the bearing holder 33 can be defined in the axial direction, preventing its movement.

Further, since the width of the oilless bearing 32 is larger than the width of the bearing holder 33, the edges of the

semicircular grooves

362 and 364 are provided with steps which engage with the edges of the oilless bearing 32, and the steps restrict the movement of the oilless bearing 32 in the axial direction.

Referring to fig. 5 and 6, the limit pin 35 is fixed along the radial direction of the rotating shaft 31 and protrudes out of the rotating shaft 31. The right housing 21 is provided with a limit hole 38 matched with the limit pin 35, and the end of the limit pin 35 extends into the limit hole 38 and can swing in the limit hole 38. And further, the relative rotation angle between the left and

right housings

11, 21 is limited, and the use safety and the user experience of the electric balance car 100 are improved.

Referring to fig. 3 and 9, the central support portion 37 is disposed between the left housing 11 and the right housing 21, and the rotating shaft 31 is inserted through the central support portion 37 and supported by the central support portion 37. Specifically, the central support portion 37 includes a cylindrical body 371, the rotating shaft 31 penetrates through the through hole 372 in the middle of the body and is supported by the central support portion 37, two mounting plates 373 are arranged on the left side of the body 371, one end of the central support portion 37 extends into the left casing 11 from the narrowing opening of the left casing 11 and is fixedly mounted with the left casing 11, and the other end extends into the right casing 12 from the narrowing opening of the right casing 21. The central support portion 37 is configured to more firmly fix the rotating shaft 31 on the left housing 11, and provide an upward supporting force for the rotating shaft 31, so as to reduce the load bearing of the oilless bearing 32 and the bearing retainer 33, reduce the wear thereof, and further enable the rotating shaft 31 to rotate flexibly.

To sum up, the electric balance car 100 of the present invention avoids deformation of the oilless bearing 32 by providing the oilless bearing 32 and the bearing holder 33 for maintaining the roundness of the oilless bearing 32 outside the rotating shaft 31, so that the rotating shaft 31 rotates flexibly, and abrasion of the rotating shaft 31 and other components is reduced; furthermore, the rotating shaft 31 is provided with the limiting pin 35, and the right shell 21 is provided with the limiting hole 38 matched with the limiting pin 35 to limit the rotating angle of the rotating shaft 31, so that the use safety and the user experience of the electric balance car 100 are improved; in addition, the central support part 37 is arranged at the connecting position between the left shell 11 and the right shell 21, so that a certain supporting effect is exerted on the rotating shaft 31, the bearing of the oilless bearing 32 and the bearing retainer 33 is reduced, the abrasion of the oilless bearing is reduced, and the rotating shaft 31 can rotate flexibly; on the other hand, the central support portion 37 fills the gap between the right housing 21 and the rotating shaft 31, and prevents foreign objects from entering the right housing 21 and damaging the internal parts.

Terms such as "upper", "lower", "rear", and the like, used herein to denote relative spatial positions, are used for ease of description to describe one feature's relationship to another feature as illustrated in the figures. It will be understood that the spatially relative positional terms may be intended to encompass different orientations than those shown in the figures depending on the product presentation position and should not be construed as limiting the claims.

In addition, the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, and although the present specification has described the present invention in detail with reference to the above embodiments, the person of ordinary skill in the art should understand that the person of ordinary skill in the art can still modify the present invention or substitute the same, and all the technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. The utility model provides an electrodynamic balance car, its includes left frame, right frame and will control the slewing mechanism that the frame rotates the connection, left side frame includes left casing and left wheel, right side frame includes right casing and right wheel, its characterized in that, slewing mechanism is including running through locating pivot in the casing about, in proper order the cover locate the epaxial oilless bearing of pivot and bearing holder, the one end and the left casing fixed connection of pivot, the other end is connected with right casing rotation through oilless bearing and bearing holder, the bearing holder with right side casing fixed connection.

2. The electrodynamic balance car of claim 1, wherein the bearing retainer is annular, the rotating mechanism further comprising a retainer mount, the bearing retainer being fixed between the right housing and the retainer mount.

3. The electric balance car of claim 2, wherein the left housing is formed by fastening an upper left housing and a lower left housing, the right housing is formed by fastening an upper right housing and a lower right housing, and the holder mounting seat is located below the rotating shaft and fixed to the upper right housing.

4. The electric balance car of claim 2, wherein the holder mounting seat is a semicircular tube disposed along an axial direction of the rotating shaft, a semicircular groove matched with the bearing holder is disposed in the holder mounting seat, mounting plates are disposed at two ends of the semicircular groove, and the holder mounting seat is fixed to the right housing through the mounting plates and bolt assemblies.

5. The electric balance car of claim 4, wherein a housing half-slot is formed at a position where the right housing is matched with the oilless bearing and the bearing retainer, and the bearing retainer is fixed between the housing half-slot and the half-slot of the retainer mounting seat.

6. The electric balance car of claim 4, wherein the width of the bearing holder is smaller than the width of the oilless bearing, and the semicircular groove edge is provided with a step that engages with the oilless bearing edge, the step limiting movement of the oilless bearing in the axial direction.

7. The electric balance car of claim 1, wherein the number of the oilless bearing and the bearing holder is two.

8. The electric balance car of claim 1, wherein the rotating shaft is fixed on the left housing through a bolt assembly, and a power supply assembly for supplying electric energy is further arranged in the left housing.

9. The electric balance car of claim 1, wherein a limit pin is radially fixed to the rotating shaft, a limit hole matched with the limit pin is formed in the right housing, and an end of the limit pin extends into the limit hole and can swing in the limit hole.

10. The electric balance car of claim 1, wherein the rotating mechanism further comprises a central support portion, the central support portion is cylindrical, the rotating shaft penetrates through the central support portion and is supported by the central support portion, one end of the central support portion extends into the left housing and is fixedly mounted with the left housing, and the other end of the central support portion extends into the right housing.