CN114151499A

CN114151499A - Automobile shock absorber

Info

Publication number: CN114151499A
Application number: CN202111327302.6A
Authority: CN
Inventors: 李华; 洪伟杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-08

Abstract

The invention relates to the technical field of automobile shock absorption, in particular to an automobile shock absorber which comprises a cylinder body and an alarm lamp installed in an automobile, wherein a piston plate with a first round hole uniformly formed in the surface is movably arranged in the cylinder body, a first supporting rod which extends into the cylinder body and is fixedly connected with the piston plate is vertically and movably inserted into the top wall of the cylinder body, a second supporting rod is vertically and fixedly installed on the bottom wall of the cylinder body, a first supporting plate and a second supporting plate are respectively and fixedly installed at the top end of the first supporting rod and the bottom end of the second supporting rod, and a first spring fixedly connected with the second supporting plate is installed on the bottom wall of the first supporting plate. According to the invention, the worm is arranged on the inner bottom wall of the cylinder body, the sliding block in threaded connection with the worm is movably arranged on the bottom wall of the piston plate, and the piston plate is used for driving the sliding block to actively move on the worm to reduce the speed of the piston plate, so that the piston plate can be prevented from rapidly moving in the cylinder body.

Description

Automobile shock absorber

Technical Field

The invention relates to the technical field of automobile shock absorption, in particular to an automobile shock absorber.

Background

The shock absorber is mainly used for inhibiting the shock when the spring absorbs the shock and rebounds and the impact from the road surface. When the shock absorber passes through the uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping. The shock absorber is too soft, the vehicle body jumps up and down, and the shock absorber is too hard, so that too much resistance is brought, and the normal work of the spring is hindered. During the retrofit process for suspension systems, the stiff shock absorbers are to be mated with stiff springs; the stiffness of the spring is, in turn, related to the weight of the vehicle, so that heavier vehicles typically employ stiffer dampers.

Through search, chinese patent No. CN108547907A discloses a damper for an electric vehicle, which includes: the device comprises a cylinder body, a first piston, a piston rod, a protection cylinder, a circulation valve, an extension valve, a second piston, an inner spring, an outer spring, a guide rod and a supporting plate; the guide rod is connected to the bottom of the second piston; the bottom of the guide rod is fixedly connected with a support plate; an outer spring sleeved on the periphery of the cylinder body is arranged between the supporting plate and the guide sleeve, and the guide sleeve is sleeved on the end head of the outer spring.

Although the damper for an electric vehicle can reduce the stress of the first piston by the linkage of the first piston and the second piston, thereby prolonging the service life of the first piston, the damper for an electric vehicle still has the following defects: in the use process, certain friction force exists between the second piston and the cylinder body, the second piston is seriously abraded due to long-term use, and therefore the phenomenon that the gap between the second piston and the cylinder body is increased occurs.

To this end, a shock absorber for an automobile is proposed.

Disclosure of Invention

The invention aims to provide a shock absorber for an automobile, which aims to solve the problems that after long-term use, the gap between a piston and a cylinder body is enlarged due to friction, the shock absorption effect is reduced, and a hydraulic rod is damaged.

In order to achieve the purpose, the invention provides the following technical scheme:

a shock absorber for an automobile comprises a cylinder body and an alarm lamp installed in the automobile, wherein a piston plate with uniformly-arranged first round holes on the surface is movably arranged in the cylinder body, a first supporting rod which extends into the cylinder body and is fixedly connected with the piston plate is vertically and movably inserted in the top wall of the cylinder body, a second supporting rod is vertically and fixedly installed on the bottom wall of the cylinder body, a first supporting plate and a second supporting plate are respectively and fixedly installed at the top end of the first supporting rod and the bottom end of the second supporting rod, a first spring which is fixedly connected with the second supporting plate is installed on the bottom wall of the first supporting plate, a worm is vertically installed on the inner bottom wall of the cylinder body, four fixing rods are vertically installed on the bottom wall of the piston plate, a sliding block which is in threaded fit with the worm is jointly and movably installed at the bottom ends of the four fixing rods, and four installation holes are formed in the side wall of the cylinder body, the four mounting holes are respectively provided with an elastic plate protruding towards the inside of the cylinder body, a sleeve is fixedly sleeved outside the cylinder body and positioned between the first spring and the cylinder body, a second spring connected with the elastic plates is horizontally and fixedly mounted on the inner side wall of the sleeve, and a pressurizing mechanism for promoting the elastic plates to protrude is arranged in the sleeve;

the pressure mechanism includes a plurality of vertical heating rods of installing in the sleeve, a plurality of piezoceramics of establishing ties with the heating rod are installed to the bellied one side of elastic plate, the cover is equipped with closed conducting ring on the outer wall of cylinder body, vertically install first magnet on the roof of slider, vertically install the switch box of being connected with the warning light on the diapire of cylinder body.

Because the first supporting plate is connected with the vehicle body, and the second supporting plate is connected with the vehicle axle, the jolting feeling can be reduced under the action of the first spring, meanwhile, in the process that the piston plate moves up and down along the inner wall of the cylinder body, the hydraulic oil at the bottom of the piston plate in the cylinder body enters the cavity above the piston plate in the cylinder body through the first round hole on the piston plate, and when the hydraulic oil passes through the first round hole, the hydraulic oil can rub the side wall of the first round hole, so that the kinetic energy of the up-and-down movement of the piston plate is converted into the internal energy of the hydraulic oil, and the kinetic energy of the piston plate is reduced, which is specifically represented as that the moving speed of the piston plate is reduced, after the moving speed of the piston plate is reduced, the speeds of the first supporting rod connected with the piston plate and the first supporting plate arranged at the top end of the first supporting rod are reduced, so that the expansion speed of the first spring arranged between the first supporting plate and the second supporting plate is reduced, the jolting sense generated by the back-and-forth expansion of the first spring can be reduced, when the gap between the piston plate and the inner wall of the cylinder body is in a normal range, the slide blocks movably connected with the bottom ends of the four fixed rods arranged on the bottom wall of the piston plate are driven by the piston plate to move downwards to the maximum extent and are positioned at the top end of the worm, but the gap between the piston plate and the cylinder body is easily increased after long-term abrasion, when the piston plate passes through a jolting road section, hydraulic oil can rapidly pass through the gap between the piston plate and the cylinder body and does not pass through the first round hole with the smaller cross section area on the piston plate, at the moment, the piston plate can rapidly move in the cylinder body, so that the kinetic energy of the piston plate cannot be consumed, the specific expression is that the expansion speed of the first spring cannot be reduced, at the moment, the slide blocks movably arranged at the bottom ends of the fixed rods can freely move downwards in the cylinder body along with the piston plate, because the sliding block is movably connected with the fixed rod, when the sliding block is contacted with the worm, the piston plate drives the fixed rod to push the sliding block downwards, so the sliding block can move downwards along the worm, and because the resistance force applied when the sliding block moves on the worm is larger, the action of slowing down the moving speed of the piston plate is achieved, similarly, when the piston plate drives the sliding block to move upwards, the action of reducing the moving speed of the piston plate can be achieved, and in the process that the piston plate moves downwards beyond the limit, the elastic plate which is protruded towards the cylinder body and pushed by the second spring is extruded, because one side of the protrusion of the elastic plate is provided with a plurality of piezoelectric ceramics which are connected with the heating rod in series, the piezoelectric ceramics can be triggered to generate electricity in the process that the piston plate extrudes the elastic plate, so that the heating rod arranged in the sleeve generates heat, and the temperature in the space formed between the sleeve and the cylinder body rises when the heating rod emits heat, the pressure is increased, thereby assisting the second spring to push the elastic plate in the cylinder body, in the process that the piston plate is contacted with the elastic plate, because the friction force between the elastic plate protruding in the cylinder body and the piston plate is larger, the elastic plate has the function of hindering the movement of the piston plate, the speed of the piston plate moving up and down is reduced to a certain extent, meanwhile, according to the lenz law, in the process that the slider drives the first magnet to move down, the closed conducting ring on the outer wall of the cylinder body can generate induced current and generate an induced magnetic field repelling the first magnet, the function of reducing the movement speed of the piston plate is played, when the slider drives the first magnet to move up, the induced magnetic field generated on the closed conducting ring has the function of attracting the first magnet, thereby the movement speed of the piston plate is reduced, when the slider moves to the bottom end of the worm, the switch box is triggered under the action of the first magnet, therefore, the warning lamp arranged in the vehicle twinkles, and the function of prompting the driver to maintain the shock absorber is achieved.

Preferably, the worm is sleeved with a pressure plate, and the pressure plate is in threaded connection with the cylinder body through a bolt.

Because the force of the piston plate pushing the sliding block downwards is large, the worm can be damaged in the process that the sliding block moves on the worm, and the pressing plate is released by screwing the bolt after the worm is damaged, so that only the piston plate and the worm need to be replaced when the shock absorber is maintained, the whole shock absorber does not need to be replaced, and the effect of reducing the maintenance cost is achieved.

Preferably, each bottom of the fixed rod is fixedly provided with a steel ball, an annular groove is formed in the top wall of the sliding block, and the steel balls are movably embedded in the annular groove.

In the process that the fixed rod drives the sliding block to move downwards, the sliding block is in threaded connection with the worm, and the worm is fixed on the bottom wall of the cylinder body, so that the sliding block is in a rotating state when moving along the worm, and the steel ball installed at the bottom end of the fixed rod is movably embedded in the annular groove formed in the sliding block to play a role in ensuring that the sliding block can normally move along the worm.

Preferably, the sleeve is made of a heat insulation material, and a heat conduction rod extending to the inner wall of the sleeve is horizontally inserted into the inner side wall of the cylinder body.

The piston plate can rub with hydraulic oil in the process of moving in the cylinder body, so that the temperature of the hydraulic oil can be increased, the heat conducting rods extending to the inner wall of the sleeve are inserted in the side wall of the cylinder body, the heat of the hydraulic oil can be transferred to the space between the sleeve and the cylinder body through the heat transfer effect, the sleeve is made of a heat insulation material, the heat can be prevented from being dissipated into the air, the pressure in the space is increased, and the function of assisting the second spring to push the elastic plate to protrude inwards to the cylinder body is achieved.

Preferably, vertical fixed mounting has two guide bars, two on the interior diapire of cylinder body the common movable sleeve is equipped with the baffle on the guide bar, a plurality of second round holes have evenly been seted up on the baffle, vertically install the third spring that the diameter is greater than the worm diameter on the diapire of baffle, the third spring cover is established on the worm.

At a moment of slider and baffle contact, the effect of force is mutual, consequently when the slider promotes the baffle downwards, the baffle that is supported by the third spring also can upwards promote the slider, thereby reduce the impact force of slider to the worm, hydraulic oil can flow to the top of baffle through the second round hole on the baffle simultaneously, at this in-process, the kinetic energy of baffle downstream will be because of the internal energy of frictional force conversion between second round hole and the hydraulic oil to hydraulic oil, the speed that moves down of baffle has further been reduced, make the baffle upwards promote the slider in other words, the effect that prevents the worm and damaged by the striking has been played.

Preferably, the activity sets in the switch box has the second magnet that repels each other with first magnet, fixed mounting has the third magnet that repels each other with second magnet on the interior diapire of switch box, all install the conducting strip of establishing ties with the warning light on the diapire of second magnet and the roof of third magnet.

When the piston plate can only move to the top end of the worm, the distance between the first magnet and the second magnet is far, so that the repulsive force between the first magnet and the second magnet is smaller than the repulsive force between the second magnet and the third magnet, so that the second magnet is positioned on the inner top wall of the switch box, because the repulsive force between the first magnet and the second magnet is larger than the repulsive force between the second magnet and the third magnet when the distance is the same, when the sliding block moves to the bottom end of the worm, the first magnet arranged on the sliding block pushes the second magnet downwards, so that the second magnet mutually repulsive with the third magnet arranged at the bottom end of the switch box slides downwards along the inner wall of the switch box, in the process of sliding downwards of the second magnet, the conducting strips on the bottom wall of the second magnet and the top wall of the third magnet are contacted, so that the circuit is conducted, and when the two magnets are contacted, the warning lamp arranged in the vehicle emits light, the effect that the suggestion driver need maintain the bumper shock absorber has been played, the direction winding that will supply power for the warning light simultaneously is in the bottom of sleeve lateral wall, can produce the magnetic field that attracts first magnet when the warning light circular telegram to the effect that reduces the slider and move up the speed along the worm has been played.

Compared with the prior art, the invention has the beneficial effects that:

1. when leading to the gap grow between piston plate and the cylinder body through long-term use, through the interior bottom wall mounting worm at the cylinder body to the activity sets up the slider that passes through threaded connection with the worm on the diapire of piston plate, utilizes the piston plate to drive the slider initiative and removes the speed that reduces the piston plate on the worm, thereby can prevent the piston plate rapid draing in the cylinder body.

2. Through set up the sleeve outside the cylinder body to at telescopic lateral wall installation second spring, utilize the elastic plate of second spring promotion installation on the cylinder body lateral wall, make the elastic plate obstruct the piston board and reciprocate, thereby reduce the speed that the piston board moved down, can reduce the impact force of slider to the worm, and then prevent to lead to the worm to damage because of the impact force of slider is too big.

3. When the slider moved the bottom of worm, utilized the repulsion force between first magnet and the second magnet to make the second magnet carry the conducting strip and move down along the switch box, when two conducting strips contact, triggered the warning light of installing in the car and sent out light to remind the driver to select comparatively level and smooth road surface as far as possible and go, and in time maintain the bumper shock absorber.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the invention at A;

FIG. 4 is an enlarged view of the invention at B;

FIG. 5 is an enlarged view of the invention at C;

FIG. 6 is a combination view of the fixing rod, steel ball and slide block of the present invention;

FIG. 7 is a schematic view of the structure of the pressure plate of the present invention.

In the figure: 1. a cylinder body; 2. an alarm light; 3. a piston plate; 4. a first support bar; 5. a second support bar; 6. a first support plate; 7. a second support plate; 8. a first spring; 9. a worm; 10. fixing the rod; 11. a slider; 12. an elastic plate; 13. a sleeve; 14. a second spring; 15. piezoelectric ceramics; 16. conducting rings; 17. a first magnet; 18. a switch box; 19. pressing a plate; 20. a steel ball; 21. a heat conducting rod; 22. a guide bar; 23. a baffle plate; 24. a third spring; 25. a second magnet; 26. a third magnet; 27. and (4) conducting strips.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, the present invention provides a shock absorber for an automobile, which has the following technical scheme:

a shock absorber for an automobile comprises a cylinder body 1 and an alarm lamp 2 installed in the automobile, a piston plate 3 with a first round hole uniformly formed in the surface is movably arranged in the cylinder body 1, a first supporting rod 4 extending into the cylinder body 1 and fixedly connected with the piston plate 3 is vertically and movably inserted in the top wall of the cylinder body 1, a second supporting rod 5 is vertically and fixedly installed on the bottom wall of the cylinder body 1, a first supporting plate 6 and a second supporting plate 7 are respectively and fixedly installed at the top end of the first supporting rod 4 and the bottom end of the second supporting rod 5, a first spring 8 fixedly connected with the second supporting plate 7 is installed on the bottom wall of the first supporting plate 6, a worm 9 is vertically installed on the inner bottom wall of the cylinder body 1, four fixing rods 10 are vertically installed on the bottom wall of the piston plate 3, a sliding block 11 in threaded fit with the worm 9 is movably installed at the bottom ends of the four fixing rods 10 together, four mounting holes are formed in the side wall of the cylinder body 1, elastic plates 12 protruding towards the inside of the cylinder body 1 are arranged on the four mounting holes, a sleeve 13 is fixedly sleeved outside the cylinder body 1, the sleeve 13 is positioned between the first spring 8 and the cylinder body 1, a second spring 14 connected with the elastic plates 12 is horizontally and fixedly arranged on the inner side wall of the sleeve 13, and a pressurizing mechanism for enabling the elastic plates 12 to protrude is arranged in the sleeve 13;

the pressurizing mechanism comprises a plurality of heating rods vertically installed in the sleeve 13, a plurality of piezoelectric ceramics 15 connected with the heating rods in series are installed on one side of the protrusion of the elastic plate 12, a closed conducting ring 16 is sleeved on the outer wall of the cylinder body 1, a first magnet 17 is vertically installed on the top wall of the sliding block 11, and a switch box 18 connected with the alarm lamp 2 is vertically installed on the bottom wall of the cylinder body 1.

Because the first supporting plate 6 is connected with the vehicle body, and the second supporting plate 7 is connected with the vehicle axle, the jolt feeling can be reduced under the action of the first spring 8, meanwhile, in the process that the piston plate 3 moves up and down along the inner wall of the cylinder body 1, the hydraulic oil at the bottom of the piston plate 3 in the cylinder body 1 enters the cavity above the piston plate 3 in the cylinder body 1 through the first round hole on the piston plate 3, when the hydraulic oil passes through the first round hole, the hydraulic oil can rub against the side wall of the first round hole, so that the kinetic energy of the piston plate 3 moving up and down is converted into the internal energy of the hydraulic oil, and the kinetic energy of the piston plate 3 is reduced, which is specifically represented as that the moving speed of the piston plate 3 is reduced, after the moving speed of the piston plate 3 is reduced, the speeds of the first supporting rod 4 connected with the piston plate and the first supporting plate 6 arranged at the top end of the first supporting rod 4 are reduced, so that the expansion and contraction speed of the first spring 8 arranged between the first supporting plate 6 and the second supporting plate 7 can be reduced, the bumping feeling caused by the back-and-forth expansion of the first spring 8 can be reduced, when the gap between the piston plate 3 and the inner wall of the cylinder body 1 is in a normal range, the sliding blocks 11 movably connected with the bottom ends of four fixed rods 10 arranged on the bottom wall of the piston plate 3 are driven by the piston plate 3 to move down to the maximum extent and are positioned at the top end of the worm 9, but the gap between the piston plate 3 and the cylinder body 1 is easily increased after long-term abrasion, when the piston plate passes through a bumping road section, hydraulic oil can rapidly pass through the gap between the piston plate 3 and the cylinder body 1 and does not pass through the first round hole with a smaller cross-sectional area on the piston plate 3, at the moment, the piston plate 3 can rapidly move in the cylinder body 1, so that the kinetic energy of the piston plate 3 cannot be consumed, the specific expression is that the expansion speed of the first spring 8 cannot be reduced, at the moment, the sliding blocks 11 movably arranged at the bottom ends of the fixed rods 10 can freely move down in the cylinder body 1 along with the piston plate 3, because the slide block 11 is movably connected with the fixed rod 10, when the slide block 11 is contacted with the worm 9, the piston plate 3 drives the fixed rod 10 to push the slide block 11 downwards, so the slide block 11 can move downwards along the worm 9, because the resistance force received when the slide block 11 moves on the worm 9 is larger, the action of slowing down the moving speed of the piston plate 3 is achieved, similarly, when the piston plate 3 drives the slide block 11 to move upwards, the action of reducing the moving speed of the piston plate 3 can be achieved, and in the process that the piston plate 3 moves downwards beyond the limit, the elastic plate 12 which is protruded in the cylinder body 1 and pushed by the second spring 14 is pressed, because one side of the protrusion of the elastic plate 12 is provided with a plurality of piezoelectric ceramics 15 which are connected with the heating rod in series, the piezoelectric ceramics 15 can be triggered to generate electricity in the process that the piston plate 3 presses the elastic plate 12, so that the heating rod installed in the sleeve 13 generates heat, when the heating rod emits heat, the temperature in the space formed between the sleeve 13 and the cylinder 1 rises, the pressure is increased, thereby assisting the second spring 14 to push the elastic plate 12 into the cylinder 1, in the process that the piston plate 3 is contacted with the elastic plate 12, because the friction force between the elastic plate 12 protruding into the cylinder 1 and the piston plate 3 is larger, the elastic plate 12 has the function of obstructing the movement of the piston plate 3, the speed of the piston plate 3 moving up and down is reduced to a certain extent, meanwhile, according to the lenz law, in the process that the slider 11 drives the first magnet 17 to move down, the closed conducting ring 16 on the outer wall of the cylinder 1 generates induction current and generates an induction magnetic field repelling the first magnet 17, the effect of reducing the movement speed of the piston plate 3 is achieved, when the slider 11 drives the first magnet 17 to move up, the induction magnetic field generated on the closed conducting ring 16 has the effect of attracting the first magnet 17, thereby reducing the moving speed of the piston plate 3, when the slide block 11 moves to the bottom end of the worm 9, the switch box 18 is triggered under the action of the first magnet 17, so that the warning lamp 2 installed in the vehicle flickers, and the function of prompting the driver to maintain the shock absorber is achieved.

Referring to fig. 2 and 7, as an embodiment of the present invention, a pressing plate 19 is fitted over the worm 9, and the pressing plate 19 is screwed to the cylinder block 1 by a bolt.

Because the force of the piston plate 3 pushing the sliding block 11 downwards is large, the worm 9 may be damaged in the process of moving the sliding block 11 on the worm 9, and after the worm 9 is damaged, the pressing plate 19 is released by screwing the bolt, so that only the piston plate 3 and the worm 9 need to be replaced when the shock absorber is repaired, the whole shock absorber does not need to be replaced, and the effect of reducing the maintenance cost is achieved.

Referring to fig. 6, as an embodiment of the present invention, a steel ball 20 is fixedly mounted at the bottom end of each fixing rod 10, an annular groove is formed on the top wall of the slider 11, and a plurality of steel balls 20 are movably embedded in the annular groove.

In the process that the fixed rod 10 drives the sliding block 11 to move downwards, the sliding block 11 is in threaded connection with the worm 9, and the worm 9 is fixed on the bottom wall of the cylinder body 1, so that the sliding block 11 is in a rotating state when moving along the worm 9, and the steel ball 20 installed at the bottom end of the fixed rod 10 is movably embedded in the annular groove formed in the sliding block 11 to play a role in ensuring that the sliding block 11 can normally move along the worm 9.

Referring to fig. 2, the sleeve 13 is made of a heat insulating material, and a heat conducting rod 21 extending to the inner wall of the sleeve 13 is horizontally inserted into the inner wall of the cylinder 1.

Since the piston plate 3 can generate friction with the hydraulic oil during the movement in the cylinder body 1, the temperature of the hydraulic oil can be increased, the heat of the hydraulic oil can be transferred to the space between the sleeve 13 and the cylinder body 1 through the heat transfer effect by inserting the heat conducting rod 21 extending to the inner wall of the sleeve 13 on the side wall of the cylinder body 1, and the sleeve 13 is made of the heat insulating material, so that the heat can be prevented from being dissipated into the air, the pressure in the space can be increased, and the function of assisting the second spring 14 to push the elastic plate 12 to protrude inwards in the cylinder body 1 can be achieved.

As an embodiment of the present invention, referring to fig. 2, two guide rods 22 are vertically and fixedly installed on the inner bottom wall of the cylinder body 1, a baffle plate 23 is movably sleeved on the two guide rods 22 together, a plurality of second circular holes are uniformly formed on the baffle plate 23, a third spring 24 with a diameter larger than that of the worm 9 is vertically installed on the bottom wall of the baffle plate 23, and the third spring 24 is sleeved on the worm 9.

At the instant that slider 11 and baffle 23 contact, the effect of because force is mutual, consequently when slider 11 pushes down baffle 23, baffle 23 that is supported by third spring 24 also can upwards push slider 11, thereby reduce the impact force of slider 11 to worm 9, hydraulic oil can flow to the top of baffle 23 through the second round hole on baffle 23 simultaneously, at this in-process, the kinetic energy of baffle 23 downstream converts the internal energy of hydraulic oil into because of the frictional force between second round hole and the hydraulic oil, will further reduce the speed of moving down of baffle 23, be equivalent to impel baffle 23 to upwards push slider 11, played the effect that prevents that worm 9 from being damaged by the striking.

Referring to fig. 5, as one embodiment of the present invention, a second magnet 25 which repels the first magnet 17 is movably arranged in the switch box 18, a third magnet 26 which repels the second magnet 25 is fixedly mounted on the inner bottom wall of the switch box 18, and a conductive sheet 27 which is connected in series with the warning lamp is mounted on both the bottom wall of the second magnet 25 and the top wall of the third magnet 26.

When the piston plate 3 can only move to the top end of the worm 9, the distance between the first magnet 17 and the second magnet 25 is relatively long, so the repulsive force between the first magnet 17 and the second magnet 25 is smaller than the repulsive force between the second magnet 25 and the third magnet 26, so the second magnet 25 is positioned on the inner top wall of the switch box 18, because the repulsive force between the first magnet 17 and the second magnet 25 is larger than the repulsive force between the second magnet 25 and the third magnet 26 when the distance is the same, when the slider 11 moves to the bottom end of the worm 9, the first magnet 17 mounted on the slider 11 pushes the second magnet 25 downwards, so the second magnet 25 which is mutually repulsive with the third magnet 26 mounted at the bottom end of the switch box 18 slides downwards along the inner wall of the switch box 18, and during the sliding of the second magnet 25, the conductive sheets 27 on the bottom wall of the second magnet 25 and the top wall of the third magnet 26 contact, thereby make the circuit switch on, when two conducting strips 27 contact, install the warning light in the car and will send the light, played the effect that the suggestion driver need maintain the bumper shock absorber, will be simultaneously for the direction winding of warning light power supply in the bottom of sleeve 13 lateral wall, can produce the magnetic field that attracts first magnet 17 when the warning light circular telegram to the effect that has reduced slider 11 and has moved up the speed along worm 9 has been played.

The working principle is as follows: because first backup pad 6 and body coupling, second backup pad 7 is connected with the axle, consequently can slow down the sense of jolting under the effect of first spring 8, at the in-process that piston plate 3 reciprocated along the inner wall of cylinder body 1 simultaneously, the hydraulic oil that lies in 3 bottoms of piston plate in the cylinder body 1 sees through the first round hole that is located 3 tops of piston plate in the cavity that cylinder body 1 entered into 1 top of piston plate in the cylinder body, when hydraulic oil passed through first round hole, can take place the friction with the lateral wall of first round hole, thereby convert the kinetic energy that piston plate 3 reciprocated into the internal energy of hydraulic oil, thereby make the kinetic energy of piston plate 3 reduce, the concrete expression is that the speed that piston plate 3 removed slows down.

When the moving speed of the piston plate 3 is reduced, the speed of the first supporting rod 4 connected with the piston plate and the first supporting plate 6 arranged at the top end of the first supporting rod 4 is reduced, so that the expansion speed of the first spring 8 arranged between the first supporting plate 6 and the second supporting plate 7 is reduced, the bumping feeling generated by the back and forth expansion of the first spring 8 can be reduced, when the gap between the piston plate 3 and the inner wall of the cylinder body 1 is in a normal range, the slide block 11 movably connected with the bottom ends of the four fixed rods 10 arranged on the bottom wall of the piston plate 3 is driven by the piston plate 3 to move downwards to the top end of the worm 9 to the maximum extent, but the gap between the piston plate 3 and the cylinder body 1 is easily increased after long-term abrasion, when the piston plate passes through a bump road section, hydraulic oil can rapidly pass through the gap between the piston plate 3 and the cylinder body 1 and does not pass through the first round hole with a smaller cross-sectional area on the piston plate 3, at this time, the piston plate 3 can move rapidly in the cylinder 1, so that the kinetic energy of the piston plate 3 cannot be consumed, specifically, the expansion and contraction speed of the first spring 8 cannot be reduced, at this time, the sliding block 11 movably installed at the bottom end of the fixing rod 10 can move downwards along with the piston plate 3 in the cylinder 1 to any limit, because the sliding block 11 is movably connected with the fixed rod 10, when the sliding block 11 is contacted with the worm 9, the sliding block 11 is pushed downwards by the fixed rod 10 driven by the piston plate 3, in the process that the fixed rod 10 drives the slide block 11 to move downwards, because the slide block 11 is in threaded connection with the worm 9, and the worm 9 is fixed on the bottom wall of the cylinder body 1, therefore, the slide block 11 is in a rotating state when moving along the worm 9, and the function of ensuring that the slide block 11 can normally move along the worm 9 is realized by movably embedding the steel ball 20 arranged at the bottom end of the fixed rod 10 in the annular groove formed on the slide block 11.

Because the slider 11 is subjected to a large resistance when moving on the worm 9, the function of slowing down the moving speed of the piston plate 3 is achieved, similarly, when the piston plate 3 drives the slider 11 to move upwards, the function of reducing the moving speed of the piston plate 3 can be achieved, and in the process that the piston plate 3 moves downwards beyond the limit, the elastic plate 12 which is convex in the cylinder body 1 and is pushed by the second spring 14 is squeezed, because the plurality of piezoelectric ceramics 15 which are connected with the heating rods in series are installed on the convex surface of the elastic plate 12, the piezoelectric ceramics 15 can be triggered to generate electricity in the process that the piston plate 3 squeezes the elastic plate 12, so that the heating rods installed in the sleeve 13 emit heat, and because the piston plate 3 can generate friction with the hydraulic oil in the process that the piston plate moves in the cylinder body 1, the temperature of the hydraulic oil can be increased, and the heat of the hydraulic oil can be transferred to the sleeve 13 through the heat transfer function of heat transfer by inserting the heat conduction rods 21 which extend to the inner wall of the sleeve 13 on the side wall of the cylinder body 1 And the space between the cylinder 1 and the sleeve 13 made of heat insulating material, which can prevent heat from radiating into the air, thereby increasing the pressure in the space, and playing a role of assisting the second spring 14 to push the elastic plate 12 to protrude inwards the cylinder 1, thereby assisting the second spring 14 to push the elastic plate 12 towards the cylinder 1, during the process that the piston plate 3 contacts with the elastic plate 12, because the friction force between the elastic plate 12 protruding towards the cylinder 1 and the piston plate 3 is large, the elastic plate 12 has a role of blocking the piston plate 3 from moving, so the speed of the piston plate 3 moving up and down is reduced to a certain extent, and at the moment that the slide block 11 contacts with the baffle plate 23, because the force is mutual, when the slide block 11 pushes the baffle plate 23 downwards, the baffle plate 23 supported by the third spring 24 also pushes the slide block 11 upwards, thereby the impact force of the slide block 11 on the worm 9 is reduced, meanwhile, hydraulic oil can flow to the upper part of the baffle plate 23 through the second round hole on the baffle plate 23, in the process, the kinetic energy of the downward movement of the baffle plate 23 is converted into the internal energy of the hydraulic oil due to the friction force between the second round hole and the hydraulic oil, the downward movement speed of the baffle plate 23 is further reduced, namely the baffle plate 23 is promoted to upwards push the slide block 11, the effect of preventing the worm 9 from being damaged by impact is achieved, meanwhile, according to the lenz law, in the process that the slide block 11 drives the first magnet 17 to move downwards, the closed conducting ring 16 on the outer wall of the cylinder body 1 can generate induction current, and an induction magnetic field repelling the first magnet 17 is generated, the effect of reducing the movement speed of the piston plate 3 is achieved, when the slide block 11 drives the first magnet 17 to move upwards, the induction magnetic field generated on the closed conducting ring 16 has the effect of attracting the first magnet 17, so as to reduce the movement speed of the piston plate 3, when the slider 11 moves to the bottom end of the worm 9, the switch box 18 is triggered under the action of the first magnet 17, when the piston plate 3 can only move to the top end of the worm 9, because the distance between the first magnet 17 and the second magnet 25 is relatively long, the repulsive force between the first magnet 17 and the second magnet 25 is smaller than the repulsive force between the second magnet 25 and the third magnet 26, so that the second magnet 25 is positioned on the inner top wall of the switch box 18, because the repulsive force between the first magnet 17 and the second magnet 25 is larger than the repulsive force between the second magnet 25 and the third magnet 26 when the distance is the same, when the slider 11 moves to the bottom end of the worm 9, the first magnet 17 mounted on the slider 11 pushes the second magnet 25 downwards, so that the second magnet 25, which is mutually repulsive with the third magnet 26 mounted on the bottom end of the switch box 18, slides downwards along the inner wall of the switch box 18, and during the sliding of the second magnet 25 downwards, conducting strip 27 on the second magnet 25 diapire and on the third magnet 26 roof will contact to make the circuit switch on, when two conducting strips 27 contact, the warning light of installing in the car will send the light, has played the effect that the suggestion driver needs the maintenance bumper shock absorber.

The guide winding for the warning light power supply is wound at the bottom end of the side wall of the sleeve 13, and a magnetic field for attracting the first magnet 17 can be generated when the warning light is electrified, so that the effect of reducing the upward moving speed of the sliding block 11 along the worm 9 is achieved, however, the force for pushing the sliding block 11 downwards by the piston plate 3 is large, so that the worm 9 can be damaged in the process of moving the sliding block 11 on the worm 9, after the worm 9 is damaged, the pressing plate 19 is released by screwing the bolt, so that only the piston plate 3 and the worm 9 need to be replaced when the shock absorber is repaired, the whole shock absorber does not need to be replaced, and the effect of reducing the maintenance cost is achieved.

The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A shock absorber for an automobile comprises a cylinder body (1) and an alarm lamp (2) installed in the automobile, and is characterized in that: the cylinder body (1) is internally provided with a piston plate (3) with a surface uniformly provided with a first round hole, the top wall of the cylinder body (1) is vertically movably inserted with a first support rod (4) which extends into the cylinder body (1) and is fixedly connected with the piston plate (3), the bottom wall of the cylinder body (1) is vertically and fixedly provided with a second support rod (5), the top end of the first support rod (4) and the bottom end of the second support rod (5) are respectively and fixedly provided with a first support plate (6) and a second support plate (7), the bottom wall of the first support plate (6) is provided with a first spring (8) fixedly connected with the second support plate (7), the inner bottom wall of the cylinder body (1) is vertically provided with a worm (9), the bottom wall of the piston plate (3) is vertically provided with four fixing rods (10), and the bottom ends of the four fixing rods (10) are jointly and movably provided with a slide block (11) in threaded fit with the worm (9), the cylinder is characterized in that four mounting holes are formed in the side wall of the cylinder body (1), elastic plates (12) protruding towards the inside of the cylinder body (1) are mounted on the four mounting holes, a sleeve (13) is fixedly sleeved outside the cylinder body (1), the sleeve (13) is located between the first spring (8) and the cylinder body (1), a second spring (14) connected with the elastic plates (12) is horizontally and fixedly mounted on the inner side wall of the sleeve (13), and a pressurizing mechanism for enabling the elastic plates (12) to protrude is arranged in the sleeve (13);

the heating rod of pressure mechanism in sleeve (13) is installed including a plurality of vertical, a plurality of piezoceramics (15) of establishing ties with the heating rod are installed to the bellied one side in elastic plate (12), the cover is equipped with closed conducting ring (16) on the outer wall of cylinder body (1), vertically install first magnet (17) on the roof of slider (11), vertically install switch box (18) of being connected with warning light (2) on the diapire of cylinder body (1).

2. The shock absorber for an automobile according to claim 1, wherein: the worm (9) is sleeved with a pressure plate (19), and the pressure plate (19) is in threaded connection with the cylinder body (1) through a bolt.

3. The shock absorber for an automobile according to claim 1, wherein: the bottom end of each fixed rod (10) is fixedly provided with a steel ball (20), the top wall of each sliding block (11) is provided with an annular groove, and the steel balls (20) are movably embedded in the annular grooves.

4. The shock absorber for an automobile according to claim 1, wherein: the sleeve (13) is made of heat-insulating materials, and heat-conducting rods (21) extending to the inner wall of the sleeve (13) are horizontally inserted into the inner side wall of the cylinder body (1).

5. The shock absorber for an automobile according to claim 1, wherein: vertical fixed mounting has two guide bars (22), two on the interior diapire of cylinder body (1) common movable sleeve is equipped with baffle (23) on guide bar (22), a plurality of second round holes have evenly been seted up on baffle (23), vertically install third spring (24) that the diameter is greater than worm (9) diameter on the diapire of baffle (23), third spring (24) cover is established on worm (9).

6. The shock absorber for an automobile according to claim 1, wherein: switch box (18) internalization sets second magnet (25) that have mutually exclusive with first magnet (17), fixed mounting has third magnet (26) with second magnet (25) mutual exclusive on the interior diapire of switch box (18), all install conducting strip (27) of establishing ties with the warning light on the diapire of second magnet (25) and the roof of third magnet (26).