CN210364236U

CN210364236U - Low-dead-weight high-durability novel electric vehicle center shaft assembly

Info

Publication number: CN210364236U
Application number: CN201920953828.7U
Authority: CN
Inventors: 许震飞; 许嘉怡; 许一白
Original assignee: Tianjin Damai Technology Co ltd
Current assignee: Tianjin Damai Intelligent Technology Co.,Ltd.
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-04-21
Anticipated expiration: 2029-06-24

Abstract

A novel electric vehicle center shaft assembly with low self weight and high durability comprises a shaft lever rotationally connected in an electric vehicle shaft tube, cranks are sleeved at two ends of the shaft lever, two end parts of the shaft lever are of regular polygon structures, and threaded holes are coaxially formed in the two end parts of the shaft lever; bolts are attached within the threaded bores to connect the shaft and crank together. This electric motor car axis assembly has solved the connection structure intensity problem at axostylus axostyle both ends when possessing the low dead weight advantage of hollow axostylus axostyle to reduced the processing cost of axostylus axostyle, and simple structure easily realizes.

Description

Low-dead-weight high-durability novel electric vehicle center shaft assembly

Technical Field

The utility model relates to an electric motor car accessory technical field especially relates to a low dead weight high durable novel electric motor car axis assembly.

Background

It is known from the prior art to provide a shaft, in particular a solid shaft, of a motor vehicle, which is supported in rotation in a shaft tube of the motor vehicle by means of two rolling bearings, the shaft being fitted with cranks at both ends and being axially fixed and pressed by means of fastening nuts screwed on both ends of the shaft. The shaft transmits a torque, which acts as a result of a pedal force applied to the pedal of the electric vehicle.

Although there is the hollow axis electric motor car in the market at present, because the axis atress is great easily makes the both ends of tubulose axis take place to deform in the process of riding to because structural strength is lower, when electric motor car axis dismantlement maintenance, its both ends easily take place fracture, overflow and detain in the junction of bent axle. Although the hollow center shaft has the advantages of low self weight, low cost and the like, the hollow center shaft is still not widely used due to the problems of structural strength and the like.

Through searching the published patents, the following patent documents most relevant to the technical scheme are found:

a hollow center shaft (CN207550403U) of a bicycle discloses a hollow center shaft of the bicycle, which comprises a shaft body which is rotatably arranged at the five-way position of a frame of an electric vehicle, the middle part of the shaft body is hollow, two ends of the shaft body are sleeved with cranks, a wrench body is inserted in the shaft body, the wrench body is cylindrical, accommodating grooves which are arranged along the axial direction of the wrench body are uniformly distributed on the outer cylindrical wall of the wrench body, and inner hexagonal wrenches with various specifications and sizes are arranged in the accommodating grooves; the outer cylindrical wall of one end of the wrench body, which is positioned in the shaft body, is uniformly provided with a plurality of inner hexagonal counter bores which correspond to the specifications and sizes of the inner hexagonal wrench one by one. This scheme small in size light in weight can hide in electric motor car axis, can take out at any time when needs use, and the allen specification is complete, uses and carries all and its convenience, and annular magnet adsorbs fixedly firmly with the spanner cap, has avoided producing when riding by bike to come from vibrations from about, can avoid the spanner body to receive vibrations accident to drop.

Through the comparative analysis of the above patent publications, the applicant believes that the supporting connection mode of the two ends of the shaft rod and the crank in the application has a great difference compared with the prior art, and the patent does not affect the novelty of the application through analysis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's weak point, provide a low dead weight high durable novel electric motor car axis assembly, this electric motor car axis assembly has solved the connection structure intensity problem at axostylus axostyle both ends when possessing the low dead weight advantage of hollow axostylus axostyle to reduce the processing cost of axostylus axostyle, and simple structure, easily realize.

A novel electric vehicle center shaft assembly with low self weight and high durability comprises a shaft lever rotationally connected in an electric vehicle shaft tube, cranks are sleeved at two ends of the shaft lever, two end parts of the shaft lever are of regular polygon structures, and threaded holes are coaxially formed in the two end parts of the shaft lever; bolts are attached within the threaded bores to connect the shaft and crank together.

And a coaxial lightening through hole is formed in the shaft rod and is coaxially communicated with the threaded hole.

The crank has a mounting hole at its root for fitting the outer periphery of the two ends of the shaft.

And the outer wall of one side of the shaft lever is provided with a positioning groove for mounting the middle shaft chain wheel, and the outer wall of the shaft lever is provided with positioning rings which are symmetrical in span.

Moreover, the sections of the regular polygon structures at the two ends of the shaft lever are square, and the threaded holes at the two ends of the shaft lever are square holes.

The utility model has the advantages and the technical effect be:

the utility model discloses a low dead weight high durable novel electric motor car axis assembly, through the spacing suit crank of regular polygon structure circumference at axostylus axostyle both ends to through the spacing articulate bolt of female connection axial on the threaded hole inner wall, the total design length of axostylus axostyle can effectively be reduced in this design, and the hollow axostylus axostyle design in both ends can effectively reduce its self weight, at last through the interior support of bolt formation screw hole, prevent that the axostylus axostyle from leading to regular polygon structure deformation and then unable circumference spacing crank because of receiving torsion too big.

The utility model discloses a low dead weight high durable novel electric motor car axis assembly, through set up with the heavy through-hole of losing of axle center in the middle part of axostylus axostyle, further lighten axostylus axostyle self weight, and compare with solid axostylus axostyle, hollow axostylus axostyle axle torque under the condition of equal torsion is bigger, and material and processing cost are lower than solid axostylus axostyle; the positioning groove is used for circumferentially positioning the middle shaft chain wheel, and the positioning ring is used for axially positioning and circumferentially rotating the shaft rod and the electric vehicle shaft tube to be connected.

The utility model discloses a low dead weight high durable novel electric motor car axis assembly, through the periphery complex mounting hole that sets up and regular polygon structure at articulate root, the crank of being convenient for is at axostylus axostyle both ends circumference and axial fixed.

The utility model discloses a low dead weight high durable novel electric motor car axis assembly, hollow axostylus axostyle through having the heavy through-hole of subtracting and screw hole replaces original solid electric motor car axis, thereby reduce the axostylus axostyle dead weight, solid axle is from great among the prior art has been solved, the problem that the processing cost is high, the end connection structural strength problem of well mandrel in the prior art has been solved simultaneously, the bolt not only realizes circumference location crank promptly, can also form the support at the threaded hole inside at axostylus axostyle both ends, increase connection structural strength, be a low dead weight high durable novel electric motor car axis assembly that has higher creativity.

Drawings

Fig. 1 is a schematic structural view (partially cut away) of the shaft rod of the present invention;

FIG. 2 is a schematic view of the connection structure of the present invention;

FIG. 3 is a side view of the shaft of the present invention;

FIG. 4 is a schematic view of the crank mounting hole structure of the present invention;

in the figure: 1-a threaded hole; 2-lightening through holes; 3-positioning a groove; 4-a positioning ring; 5-shaft lever; 6-regular polygon structure; 7-a crank; 8-a gasket; 9-bolt; 10-mounting holes.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

A novel electric vehicle center shaft assembly with low self weight and high durability comprises a shaft lever 5 which is rotationally connected in an electric vehicle shaft tube, cranks 7 are sleeved at two ends of the shaft lever, two end parts of the shaft lever are of regular polygon structures 6, and threaded holes 1 are coaxially formed at two end parts of the shaft lever; a bolt 9 is attached in the threaded hole to connect the shaft and the crank together.

Furthermore, a coaxial lightening through hole 2 is formed in the shaft lever, and the lightening through hole is coaxially communicated with the threaded hole.

Further, the crank is formed at its root with mounting holes 10 to be fitted to the outer peripheries of both end portions of the shaft.

And, the outer wall of one side of axostylus axostyle is made with the constant head tank 3 of installation axis chain wheel, and the integrative holding ring 4 that has striding the well symmetry that has on the outer wall of axostylus axostyle.

Additionally, the utility model provides a low dead weight high durable novel electric motor car axis assembly also is applicable to multiple motorcycle types such as bicycle, tricycle.

In addition, the utility model provides a cross-section of mounting hole is the square, and the cross-section that subtracts heavy through-hole is circular.

Additionally, the utility model discloses preferably, the cover is equipped with gasket 8 on the bolt, and when the bolt was in the state of screwing up, the both sides face of this gasket closely the pressfitting respectively on the nut of bolt and articulate lateral wall.

For a more clear description of the embodiments of the present invention, the following provides an example:

as shown in fig. 1, fig. 2, the utility model discloses a low dead weight high durable novel electric motor car axis assembly, the axostylus axostyle mid-rotation is installed in the central siphon of electric motor car frame, the holding ring that the symmetry set up in striding on the axostylus axostyle clamps and fixes in the central siphon both sides, axle chain wheel is adorned admittedly to the constant head tank position of axostylus axostyle is coaxial, then suit crank on the regular polygon structure outer wall at axostylus axostyle both ends, at last at axostylus axostyle both ends screw hole department mounting bolt, be used for compressing tightly fixed crank and supporting thread.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. The utility model provides a low dead weight high durable novel electric motor car axis assembly, includes the axostylus axostyle of connecting at electric motor car central siphon internal rotation, the both ends suit crank of this axostylus axostyle, its characterized in that: the two end parts of the shaft lever are of regular polygon structures, and threaded holes are coaxially formed in the two end parts of the shaft lever; and a bolt is connected in the threaded hole so as to connect the shaft rod and the crank together.

2. The novel electric vehicle center shaft assembly with low self weight and high durability as claimed in claim 1, is characterized in that: and a coaxial weight-reducing through hole is formed in the shaft lever and is coaxially communicated with the threaded hole.

3. The novel electric vehicle center shaft assembly with low self weight and high durability as claimed in claim 1 or 2, wherein: the root of the crank is provided with regular polygon mounting holes matched with the two end parts of the shaft lever.

4. The novel electric vehicle center shaft assembly with low self weight and high durability as claimed in claim 1, is characterized in that: the outer wall of one side of the shaft lever is provided with a positioning groove for mounting the middle shaft chain wheel, and the outer wall of the shaft lever is provided with positioning rings which are symmetrical in span.

5. The novel electric vehicle center shaft assembly with low self weight and high durability as claimed in claim 1, is characterized in that: the cross-section of the regular polygon structure at the two ends of the shaft lever is square, and the threaded holes at the two ends of the shaft lever are square holes.