CN214146403U

CN214146403U - Electric automobile bumper shock absorber is from power generation facility, bumper shock absorber and electric automobile

Info

Publication number: CN214146403U
Application number: CN202023119322.8U
Authority: CN
Inventors: 陈山友; 张庆永; 范桢; 江铭俊
Original assignee: Fujian University of Technology
Current assignee: Fujian University of Technology
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-07
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses an electric automobile bumper shock absorber is from power generation facility, bumper shock absorber and electric automobile, from power generation facility, include: the shock absorber comprises a shock absorbing cylinder, a piston rod and a shock absorbing spring; it still includes: the connecting shell is vertically and fixedly arranged on one side of the shock absorber, and a lifting chute is arranged on one side, close to the piston rod, of the upper part of the connecting shell; the twist rod is vertically and coaxially arranged in the connecting shell in a penetrating way, and the upper end of the twist rod is fixedly connected with the upper end of the piston rod; the permanent magnet block is rotationally restrained in the connecting shell, and a profiling connecting groove matched with the twist rod is formed in the permanent magnet block; the coil group is arranged in a gap between the permanent magnet blocks and the inner wall of the connecting shell in a surrounding mode, a lead extending out of the connecting shell is further led out of the coil group, the piston rod lifts the twist rod in the connecting shell synchronously and drives the permanent magnet blocks to rotate, and the coil group cuts magnetic lines of force passively to generate current and leads out the current through the lead.

Description

Electric automobile bumper shock absorber is from power generation facility, bumper shock absorber and electric automobile

Technical Field

The utility model relates to a from the power generation facility field, especially relate to an electric automobile bumper shock absorber is from power generation facility, bumper shock absorber and electric automobile.

Background

The rapid development of the world economy greatly increases the consumption of energy. With the improvement of living standard of people, the automobile holding capacity is larger and larger, the proportion of automobile energy consumption in total energy consumption is higher and higher, and the energy-saving problem of automobiles is concerned more and more. At present, electric automobiles which have smaller environmental impact than traditional automobiles are put into use in life, and in order to save energy and optimize and utilize automobile resources, a plurality of students are dedicated to research automobile energy saving methods and have great effect. However, there are few devices for converting the ineffective mechanical energy of the running automobile into effective energy, and the mechanical energy of the reciprocating motion of the automobile shock absorber is finally converted into useless internal energy and causes certain loss to the shock absorber, so that the energy and materials are wasted.

Among them, patent CN 206972452U discloses a vibration power generation damper, which transmits the reciprocating vibration to the rack in the driving process of the vehicle, converts the vertical motion into the reciprocating rotation motion by the meshing action of the rack and the pinion, then converts the reciprocating rotation motion into the unidirectional rotation motion by the action of the unidirectional bearing, and then the unidirectional rotation motion drives the generator to rotate to realize the power generation.

In addition, patent CN 204547789U discloses a hydraulic damping power generation device, two hydraulic oil loops are provided between a hydraulic assembly and a hydraulic motor, the reciprocating motion of a piston rod is used to control the flow of hydraulic oil when the damper vibrates, and then the middle shaft of the hydraulic motor is connected with the middle shaft of a generator through a flywheel clutch to generate power.

However, both of the above patents have certain limitations, which make the practical application difficult, roughly as follows:

patent CN 206972452U carries out plumb motion-rotation back and forth-unidirectional rotation's work through a plurality of mechanical connections, through the cooperation of rack and pinion, bearing, drives the generator and rotates and realize the electricity generation. The problems of more connecting pieces, large power loss, large noise, low power generation efficiency, higher requirements on manufacturing and mounting precision of gears and racks, high price and the like exist;

the patent CN 204547789U utilizes the reciprocating motion of the piston rod and multiple ports to control the flow of hydraulic oil in two hydraulic oil paths, and then generates electricity by connecting multiple devices of a hydraulic motor, a flywheel clutch and a generator. The problems that the power generation device has a plurality of conversion parts, the hydraulic oil circuit is complex in structure, difficult to install, large in occupied space and the like exist, and on the other hand, the situation that power generation is unstable easily occurs through flowing of hydraulic oil for power generation.

Disclosure of Invention

In view of this, the utility model aims at providing a simple structure, implement reliably, compact structure and maintain convenient, with low costs electric automobile bumper shock absorber from power generation facility, bumper shock absorber and electric automobile.

In order to realize the technical purpose, the utility model adopts the technical scheme that:

the utility model provides an electric automobile bumper shock absorber is from power generation facility, includes:

the shock absorber comprises a shock absorbing cylinder, a piston rod and a shock absorbing spring, wherein the lower end of the piston rod penetrates into the shock absorbing cylinder in a sliding manner from the upper end of the shock absorbing cylinder, the shock absorbing spring is sleeved on the shock absorbing cylinder and the piston rod, the lower end of the shock absorbing spring abuts against the outer wall of the shock absorbing cylinder, and the upper end of the shock absorbing spring abuts against the upper end of the piston rod;

it still includes:

the connecting shell is of a cylindrical shell structure and is vertically and fixedly arranged on one side of the shock absorber, and a lifting chute is arranged on one side, close to the piston rod, of the upper part of the connecting shell;

the upper end of the twist rod is fixedly connected with the upper end of the piston rod through a connecting piece;

the permanent magnet block is of a columnar structure and is rotationally constrained at the lower part in the connecting shell through a constraint part, a gap is formed between the outer wall of the permanent magnet block and the inner wall of the connecting shell, a profiling connecting groove which penetrates through the upper end surface and the lower end surface of the permanent magnet block and is structurally matched with the twist rod is arranged on the permanent magnet block, and the lower end of the twist rod penetrates through the profiling connecting groove;

the coil group is arranged in a gap between the permanent magnet blocks and the inner wall of the connecting shell in a surrounding mode, a lead extending out of the connecting shell is led out of the coil group, the piston rod is driven to lift up and down synchronously in the connecting shell by lifting of the piston rod, the permanent magnet blocks are driven to rotate, and the coil group is enabled to cut magnetic lines of force passively to generate current and is led out through the lead.

As a possible implementation, the present solution further includes:

the storage battery is connected with the lead which is led out of the connecting shell and is used for temporarily storing the current generated by the coil group;

the charging protection unit is arranged at one end of the lead wire connected to the storage battery and is used for preventing the current output to the storage battery from being overloaded;

and the rectifier is arranged on a lead between the charging protection unit and the storage battery and is used for converting alternating current output by the lead into direct current and charging the storage battery.

As a possible implementation manner, further, the upper part of the piston rod is provided with a first annular extension part, and the lower end surface of the first annular extension part is abutted against the upper end of the damping spring; and a second annular extension part is arranged on the outer wall of the middle part of the damping cylinder, and the upper end surface of the second annular extension part is abutted against the lower end of the damping spring.

As a possible embodiment, further, the constraining member includes:

the first restraint blocks are in a pair and are oppositely arranged at the lower part of the connecting shell, and one end of each first restraint block is fixedly connected with the inner wall of the connecting shell close to the first restraint block;

the second constraint blocks are a pair of connection shells which are arranged below the first constraint blocks in an opposite mode, one ends of the second constraint blocks are fixedly connected with the inner wall of the connection shell close to the second constraint blocks respectively, a vertical space between the first constraint blocks and the second constraint blocks forms a rotation containing area for rotationally constraining the permanent magnet blocks, the lower end faces of the permanent magnet blocks are attached to the upper end faces of the pair of second constraint blocks respectively, and gaps smaller than 2mm are formed between the upper end faces of the permanent magnet blocks and the lower end faces of the pair of first constraint blocks.

As a preferred implementation option, preferably, the restraining member further comprises:

the pair of first balls correspond to the pair of first constraint blocks one by one, the lower end face of each first constraint block is provided with a first semicircular groove, the first balls are contained in the first semicircular grooves, the upper end face of each permanent magnet block is provided with a first guide groove in an annular structure, and the first guide grooves are in contact connection with the first balls on the pair of first constraint blocks, so that the first balls are constrained between the first guide grooves and the first semicircular grooves;

the pair of second balls correspond to the pair of second constraint blocks one to one, a second semicircular groove is formed in the upper end face of each second constraint block, the second balls are contained in the second semicircular grooves, a second guide groove of an annular structure is formed in the lower end face of each permanent magnet block, the second guide grooves are in contact connection with the second balls on the pair of second constraint blocks, and the second balls are constrained between the second guide grooves and the second semicircular grooves.

As a possible implementation manner, furthermore, this scheme still includes the protecting crust, the lower extreme of connecting the casing is equipped with the throat through-hole, and the connecting casing part of throat through-hole both sides is equipped with the hole of drawing forth that supplies the wire to draw forth.

As a possible implementation mode, further, the profiling connecting groove is a spiral groove which is matched with the outline of the twist rod, and the number of spiral turns of the spiral groove is 0.5-2.

As a preferred alternative, it is preferable that the spiral groove has 1 turn.

Based on above-mentioned device scheme, this scheme still provides a bumper shock absorber, and it includes above-mentioned electric automobile bumper shock absorber is from power generation facility.

Based on above-mentioned device scheme, this scheme still provides an electric automobile, it includes above-mentioned electric automobile bumper shock absorber is from power generation facility.

Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: the scheme has the advantages that the design is ingenious and reasonable, the damping spring performs vertical reciprocating motion in the vertical bumping process of the vehicle to drive the twisted rod to perform vertical reciprocating motion, the permanent magnet blocks rotate to generate a rotating magnetic field through the matching of the twisted rod and the permanent magnet blocks, the magnetic induction intensity of the magnet blocks can be further enhanced through the cylindrical structure of the connecting shell, and the coil group in the connecting shell generates induced electromotive force through cutting magnetic lines of force, so that more current is output, and the power generation efficiency is improved; on the basis of not increasing energy consumption, the mechanical energy generated by the buffer action of the shock absorber in the vehicle running process is recovered, the idle mechanical energy in the vehicle running process is converted into electric energy by utilizing an ingenious design device to supply a storage battery, the extra supplement of the electric energy is realized, meanwhile, an element with a charging protection function is correspondingly arranged to store the electric energy in the storage battery, so that the new energy automobile can be continuously charged at any time and any place in the running process, the running mileage of the new energy automobile charged at a station is prolonged, high efficiency and energy conservation are realized, and conditions are created for the further popularization of the new energy automobile.

The utility model discloses make full use of damping spring pull-up pushes down the motion for the magnet piece lasts just reversal, has both shortened the electricity generation interval time, has improved the generating efficiency again, need not more mechanical transmission, and overall structure is simple, compact, easily realizes, and is energy-concerving and environment-protective, and the energy cleanness of production can be regenerated, has great meaning to the development and the utilization of the new forms of energy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is one of the schematic structural diagrams of the connecting shell part of the embodiment 1 of the present invention;

fig. 3 is a second schematic structural view schematically showing a section of the connection housing in a cross-section of the embodiment 1 of the present invention, and mainly shows the installation state of the permanent magnet blocks in the connection housing;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 3 of the present invention;

fig. 6 is one of the schematic structural diagrams of the embodiment 4 of the present invention, in which the connecting shell is cut briefly;

FIG. 7 is a schematic view of a portion of the structure at A in FIG. 6;

FIG. 8 is a schematic view of a portion of the structure at B in FIG. 6;

fig. 9 is a second schematic structural view schematically showing a section of the connection housing in a cross-section according to the embodiment 4 of the present invention, and mainly shows the installation state of the permanent magnet blocks in the connection housing;

fig. 10 is a schematic structural view of the lower end face of the permanent magnet according to embodiment 4 of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only some but not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Example 1

As shown in one of fig. 1 to 3, the self-generating device for the electric vehicle shock absorber of the present embodiment includes:

the shock absorber 1 comprises a shock absorbing cylinder 11, a piston rod 12 and a shock absorbing spring 13, wherein the lower end of the piston rod 12 penetrates into the shock absorbing cylinder 11 in a sliding manner from the upper end of the shock absorbing cylinder 11, the shock absorbing spring 13 is sleeved on the shock absorbing cylinder 11 and the piston rod 12, the lower end of the shock absorbing spring 13 abuts against the outer wall of the shock absorbing cylinder 11, the upper end of the shock absorbing spring 13 abuts against the upper end of the piston rod 12, in the embodiment, a first annular extension part 121 is arranged on the upper part of the piston rod 12, and the lower end face of the first annular extension part 121 abuts against the upper end of the shock absorbing spring 13; a second annular extension part 111 is arranged on the outer wall of the middle part of the damping cylinder 11, and the upper end surface of the second annular extension part 111 is abutted against the lower end of the damping spring 13;

this scheme still includes:

the connecting shell 2 is of a cylindrical shell structure, is vertically and fixedly arranged on one side of the shock absorber 1, is particularly relatively fixed with the shock absorbing cylinder 11, can be fixedly connected with the shock absorbing cylinder 11 through a fixing piece, can also be fixed on any automobile part such as a chassis of an electric automobile and the like which can be relatively fixed with the shock absorbing cylinder 11, the piston rod 12 can extend and contract in the shock absorbing cylinder 11 relative to the connecting shell 2 to play a buffering role, and a lifting chute 21 is arranged on one side, close to the piston rod 12, of the upper part of the connecting shell 2;

the twist rod 3 is vertically and coaxially arranged in the connecting shell 2 in a penetrating manner, the upper end of the twist rod 3 is fixedly connected with the upper end of the piston rod 12 through a connecting piece 23, wherein the connecting piece 23 can be a connecting sleeve, one end of the connecting piece 23 is fixedly sleeved with the upper end of the twist rod, the other end of the connecting piece is provided with a hoop type copying part 231 matched with the upper end structure of the piston rod 12, the connecting piece is sleeved at the upper end of the piston rod 12 through the hoop type copying part 231, one side of the hoop type copying part 231 is also provided with a bolt hole 232, and the hoop type copying part 231 and the upper end of the piston rod 12 can be fixedly sleeved through the bolt and nut locking;

the permanent magnet block 4 is of a columnar structure and is rotationally constrained at the lower part in the connecting shell 2 through a constraining piece, a gap is reserved between the outer wall of the permanent magnet block 4 and the inner wall of the connecting shell 2, a profiling connecting groove 41 which penetrates through the upper end surface and the lower end surface of the permanent magnet block 4 and is structurally matched with the twist rod 3 is arranged on the permanent magnet block 4, and the lower end of the twist rod 3 penetrates through the profiling connecting groove 41;

the coil group 5 is arranged in a gap between the permanent magnet block 4 and the inner wall of the connecting shell 2 in a surrounding mode, a lead 51 extending out of the connecting shell is further led out of the coil group 5, the lifting of the piston rod 12 of the shock absorber 1 drives the twist rod 3 to synchronously lift in the connecting shell 2 and drive the permanent magnet block 4 to rotate, and the coil group 5 is enabled to passively cut magnetic lines of force to generate current and lead out through the lead 51.

As a possible implementation manner, further, the present embodiment further includes a protective shell 22, the lower end of the connecting shell 2 is provided with a necking through hole 24, and the portions of the connecting shell 2 at the two sides of the necking through hole 24 are provided with lead-out holes 241 for leading out the wires 51, and the protective shell 22 mainly functions to prevent the wires from being exposed to the outside too much to cause damage, and simultaneously prevents external dust or other particle impurities from entering the connecting shell 2 from the lower end to cause clamping stagnation of the twist rod 3, and it should be understood that the necking through hole 24 functions to allow the twist rod 3 to pass through the connecting shell 2, and simultaneously, the buffering stroke of the piston rod 12 can be adjusted according to the adjustment damping spring 13 to adapt to the allowable matching depth of the protective shell 22.

Because permanent magnet 4 carries out the rotation restraint and is that it cooperates with fluted bar 3, drives permanent magnet 4 by fluted bar 3 and carries out rotatory pipe fitting, consequently, as a possible implementation, further, this scheme about part include:

the first restraint blocks 42 are a pair and are oppositely arranged at the lower part of the connecting shell 2, one end of each first restraint block 42 is fixedly connected with the inner wall of the connecting shell 2 close to the corresponding first restraint block, screws can penetrate into the connecting shell 2 from the outer wall of the connecting shell 2, the end part of each first restraint block 42 is locked and fixed in the connecting shell 2, and other fixing modes such as welding, bonding and the like can also be adopted;

the second restraint blocks 43 are a pair of and oppositely arranged in the connecting shell 2 below the first restraint block 42, one end of each second restraint block 43 is fixedly connected with the inner wall of the connecting shell 2 close to the corresponding second restraint block, a vertical space between each first restraint block 42 and each second restraint block 43 forms a rotation accommodating area for rotationally restraining the permanent magnet blocks 4, the lower end surfaces of the permanent magnet blocks 4 are respectively attached to the upper end surfaces of the corresponding second restraint blocks 43, a gap smaller than 2mm is formed between the upper end surfaces of the permanent magnet blocks 4 and the lower end surfaces of the corresponding first restraint blocks 42, the gap is used for preventing the permanent magnet blocks 4 from being directly clamped between the first restraint blocks 42 and the second restraint blocks 43, in order to reduce friction and abrasion, a proper amount of solid lubricant (such as grease lubricant) can be coated on the upper end surfaces and the lower end surfaces of the permanent magnet blocks 4, in addition, the second restraint blocks 43 and the first restraint blocks 42 can be arranged in a staggered mode, therefore, the permanent magnet blocks 4 can be balanced and uniform in stress.

Because the spiral number of turns of the copying connecting groove 41 on the permanent magnet block 4 affects the resistance of the twist rod 3 matching with the twist rod to a certain extent, as a possible implementation mode, further, the copying connecting groove 41 is a spiral groove adapted to the contour of the twist rod, the number of turns of the spiral groove is 0.5-2, as an optimal value, the number of turns of the spiral groove is 1, and because the matching of the twist rod 3 and the copying connecting groove 41 is direct rotation pushing, a certain friction resistance effect exists between the two, when the number of turns of the spiral groove 41 is 0.5, the generated friction abrasion can cause the increase of the matching gap between the two due to long-term matching, thereby causing the situation that the permanent magnet block 4 can generate lateral deviation and shake to a certain extent when rotating, and when the number is more than 2, because the contact surface is too large, the too big intensity that leads to needing the higher fiber twist pole 3 of intensity to maintain the cooperation structure of cooperation resistance appears easily, simultaneously, the cooperation resistance of fiber twist pole 3 and permanent magnet 4 is too big, still probably disturb the buffer effect of the piston rod 12 of bumper shock absorber 1 to a certain extent, consequently, the spiral number of turns of profile modeling spread groove 41 is the preferred value relatively when 1 circle, it can guarantee the cooperation reliability of fiber twist pole 3 and permanent magnet 4, and in order to avoid too much wearing and tearing, can also apply a certain amount of solid lubricant in the fit clearance of fiber twist pole 3 and permanent magnet 4 in order to improve the cooperation lubricity of the two.

In the working process of the scheme of the embodiment, when the piston rod 12 of the shock absorber 1 is pressed down in a bump, the twist rod 3 is driven to press down, the twist rod 3 penetrates through the profile modeling connecting groove 41 of the permanent magnet block 4 to keep pressing down (in an initial state, the twist rod 3 is matched with the profile modeling connecting groove 41 of the permanent magnet block 4), at the moment, the damping spring 13 is compressed, and as the friction resistance of the twist rod 3 is small, the twist rod is in spiral fit with the profile modeling connecting groove 41 and the permanent magnet block 4 is rotationally constrained in the connecting shell 2, the rotary motion of the permanent magnet block 4 can be realized. When the permanent magnet block 4 rotates, a rotating magnetic field is generated, the coil group 5 cuts magnetic lines of force to generate induced electromotive force to generate electricity, and meanwhile, the existence of the connecting shell 2 greatly enhances the magnetic induction intensity of the magnet block and effectively improves the power generation efficiency. (when the twist rod 3 is pressed down to the bottom, it can pass through the necking through-hole 34 of the connecting housing 2, thereby keeping the twist rod 3 working normally)

When the damping spring 13 rebounds, the piston rod 12 is driven to rise, the twisted rod 3 is integrally driven to rise, the permanent magnet block 4 automatically rotates in the original position under the action of the restraint piece, meanwhile, the coil group 5 cuts magnetic lines of force to generate induced electromotive force so as to generate reverse current, and the current is transmitted through the connection of the wire 51 and the coil group 5 in the connecting shell 2.

Example 2

As shown in fig. 4, this embodiment is substantially the same as embodiment 1, and differs therefrom in that the present embodiment further includes:

the storage battery 6 is connected with the lead which is led out of the connecting shell 2 and is used for temporarily storing the current generated by the coil group;

a charge protection unit 7 provided at one end of the lead 51 connected to the secondary battery 6 and for preventing current overload output from the lead 51 to the secondary battery 6;

the rectifier 8 is arranged on the lead 51 between the charging protection unit 7 and the storage battery 6 and used for converting alternating current output by the lead 51 into direct current and charging the storage battery 6, and the twist rod is driven by the piston rod 12 of the shock absorber 1 to ascend and descend, so that when the permanent magnet blocks are driven by the twist rod, the ascending and descending processes of the twist rod drive the permanent magnet blocks to rotate in different directions, and therefore the rectifier is required to convert the alternating current into the direct current, so that the storage battery 6 can be charged conveniently.

The connecting housing 2 of this embodiment can be connected to a chassis (not shown) of an automobile, so that the connecting housing 2 and the damper cylinder 11 are relatively fixed, and the piston rod 12 can move relative to the connecting housing 2 to drive the twist rod in the connecting housing 2 to lift through the connecting member 23.

Since the charging protection unit 7 and the rectifier 8 are common elements in the circuit, and the scheme is not a fixed part, the principle and model thereof are not described in detail.

The reference numerals not mentioned in this embodiment are substantially the same as those in embodiment 1, and thus are not described again.

Because the permanent magnet blocks can form a strong magnetic field by performing forward and reverse continuous rotation motion, the permanent magnet blocks can continuously cut magnetic lines of force, so that induced electromotive force, namely induced alternating current, is generated by the coil group, is rectified by the rectifier 8 to become direct current, and is transmitted to a power management system (consisting of the charging protection unit 7 and the storage battery 6), the purpose of continuous charging is achieved, and the power generation effect of the permanent magnet blocks is realized.

Since the current is transmitted to the secondary battery 6 through the lead 51, a charge protection device 8 is installed on the lead 51 for controlling charging and discharging, and the charge protection unit 7 stops the supply of the power when the secondary battery 6 is fully charged or the current exceeds an allowable value, so as to prolong the life of the secondary battery; the electric energy stored in the storage battery 6 can be used for supplying power to electronic devices of the electric automobile (for example, lamps in the automobile), so that the utilization rate of the electric energy is improved.

Example 3

As shown in fig. 5, the present embodiment is substantially the same as embodiment 2, except that in the present embodiment, the connecting housing 2 is fixedly connected to the piston cylinder 11 through the connecting rod 9, so that the connecting housing 2 and the damping cylinder 11 are relatively fixed, and the piston rod 12 can move relative to the connecting housing 2 to drive the twist rod in the connecting housing 2 to lift through the connecting piece 23.

The reference numerals not mentioned in this embodiment are substantially the same as those in embodiment 2, and thus are not described again.

Example 4

As shown in one of fig. 6 to 10, this embodiment is substantially the same as embodiment 1, except that, as a preferred implementation option, the constraining member of this embodiment further includes:

the pair of first balls 422 correspond to the pair of first constraint blocks 42 one by one, the lower end surfaces of the first constraint blocks 42 are provided with first semicircular grooves 421, the first balls 422 are accommodated in the first semicircular grooves 421, the upper end surfaces of the permanent magnet blocks 4 are provided with first guide grooves 44 in an annular structure, and the first balls 422 are in contact connection with the first balls 422 on the pair of first constraint blocks 42 through the first guide grooves 44 to constrain the first balls 422 between the first guide grooves 44 and the first semicircular grooves 421;

the pair of second balls 432 correspond to the pair of second constraining blocks 43 one by one, the upper end face of the second constraining block 43 is provided with a second semicircular groove 431, the second balls 432 are accommodated in the second semicircular groove 431, the lower end face of the permanent magnet block 4 is provided with a second guide groove 45 in an annular structure, and the second guide groove 45 is in contact connection with the second balls 432 on the pair of second constraining blocks 43, so that the second balls 432 are constrained between the second guide groove 45 and the second semicircular groove 431.

This scheme further improves the cooperation reliability of restricted part and permanent magnet piece 4 through setting up first ball 432, second ball 432 on embodiment 1's basis, and simultaneously,

ball

422, 432 can also the frictional force between greatly reduced restricted part and the permanent magnet piece 4, and resistance when reducing its rotation improves the life-span of device, and greatly reduced device disturbs bumper shock absorber 1's shock-absorbing capacity simultaneously.

The above only is the partial embodiment of the utility model discloses a not therefore restriction the utility model discloses a protection scope, all utilize the utility model discloses equivalent device or equivalent flow transform that the content of description and drawing was done, or direct or indirect application in other relevant technical field, all the same reason is included in the patent protection scope of the utility model.

Claims

1. The utility model provides an electric automobile bumper shock absorber is from power generation facility, includes:

it is characterized in that it also comprises:

2. The self-generating device of the electric automobile shock absorber-absorber according to claim 1, characterized in that it further comprises:

3. The self-generating device of the shock absorber of the electric automobile according to claim 1, wherein the upper portion of the piston rod is provided with a first annular extension portion, and the lower end surface of the first annular extension portion abuts against the upper end of the shock absorbing spring; and a second annular extension part is arranged on the outer wall of the middle part of the damping cylinder, and the upper end surface of the second annular extension part is abutted against the lower end of the damping spring.

4. The electric vehicle shock absorber self-generating device as claimed in claim 1, wherein said restraint member comprises:

5. The electric vehicle shock absorber self-generating device according to claim 4, wherein the restraint further comprises:

6. The self-generating device of the electric automobile shock absorber according to claim 1, further comprising a protective shell, wherein the lower end of the connecting shell is provided with a necking through hole, and the connecting shell parts at two sides of the necking through hole are provided with lead-out holes for leading out wires.

7. The self-generating device of the electric automobile shock absorber according to claim 1, wherein the profiling connecting groove is a spiral groove adapted to the profile of the twist rod, and the number of spiral turns of the spiral groove is 0.5-2.

8. The self-generating device of the electric automobile shock absorber according to claim 7, wherein the spiral number of the spiral groove is 1 turn.

9. A shock absorber, characterized in that it comprises a self-generating device of a shock absorber of an electric vehicle according to one of claims 1 to 8.

10. An electric vehicle, characterized in that it comprises a damper self-generating device of an electric vehicle according to any one of claims 1 to 8.