CN209800608U

CN209800608U - Single-cylinder shock absorber for automobile

Info

Publication number: CN209800608U
Application number: CN201920558619.2U
Authority: CN
Inventors: 刘德凤
Original assignee: Chongqing Qingyun Trading Co Ltd
Current assignee: Chongqing Guogui Racing Technology Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-12-17
Anticipated expiration: 2029-04-23

Abstract

the utility model discloses a novel high-end car list section of thick bamboo bumper shock absorber, including the cylinder, with cylinder sliding fit's piston rod and spring, the piston rod top is equipped with the spring holder, be equipped with the screw thread section on the cylinder outer wall, this cylinder bottom cup jointed with screw thread section screw-thread fit's lower spring holder and installation ear, the spring butt is on last spring holder and lower spring holder. The utility model discloses convenient to use, the adjustable spring hardness to difference of bumper shock absorber, damping parameter, and mounting height, and in the vehicle traveles, stopped the factor that influences the shock attenuation effect such as bumper shock absorber idle stroke, noise completely, shock attenuation effect and stability are higher than traditional bumper shock absorber.

Description

Single-cylinder shock absorber for automobile

Technical Field

The utility model relates to a car suspension field especially relates to a car single-cylinder shock absorber.

Background

The shock absorber is an essential part of a motor vehicle and includes a connecting disc connected to a body suspension and a mounting lug connected to a tire. The tire-type brake device can inhibit the jumping of the vehicle in the high-speed running process, improve the grounding performance of the tire, improve the running safety, reduce the transverse vibration of the vehicle in the processes of quick acceleration, quick braking and quick turning, and improve the operation stability of the vehicle. The damping device is used for inhibiting the vibration of the spring when rebounding after absorbing the shock and the impact from the road surface, and can realize the damping of the vibration of the frame and the vehicle body so as to improve the driving smoothness of the vehicle.

traditional automobile shock absorber ware mainly comprises the fixed hydraulic shock absorber ware of the unadjustable spring of rigidity and attenuator, and is relatively poor to the suitability of different road conditions, is difficult to satisfy the driving custom of driver difference. When the shock absorber passes through the uneven road surface, although the shock absorbing spring can absorb the shock of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping.

the inventor finds out according to the existing market shock absorber service condition survey that: the shock absorber is too soft, and the vehicle body jolts up and down when the vehicle runs on a concave-convex road surface; if the shock absorber is too hard, large resistance is brought to the shock absorber, and the shock absorption effect is low; in the application of the shock absorber in the field of racing cars, the shock absorber often needs different damping parameters, spring hardness and installation height for different race road conditions. Most of the existing shock absorbers are complex in structure and are installed rigidly, and the parameters of the shock absorbers cannot be adjusted at any time according to road conditions; the size of the shock absorber in the prior art is heavy, and the increase of the weight of a car body can be caused, wherein the shock absorber further comprises a damper, a double-cylinder damper is usually adopted, the damper comprises an upper cylinder, a lower cylinder and a piston, when the piston is pressed in, a compression valve plate is opened due to high pressure, oil is compensated to an upper cavity low-pressure area from a lower cavity high-pressure area, when the piston is restored, oil in the upper cavity high-pressure area is compensated to the lower cavity low-pressure area, and in the oil compensation process, due to the fact that the piston is not pressed in enough, the oil is not compensated timely, and then the situations of idle stroke, noise and the like occur, so that the shock absorption effect is.

In view of the foregoing, there is a need in the art for a shock absorber that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single section of thick bamboo bumper shock absorber of car, its simple structure is convenient for install to realized the controllable regulation to attenuator hardness and mounting height, reduced the emergence of the circumstances such as idle stroke, noise, thereby strengthened the travelling comfort that the car travel.

the utility model provides a technical scheme that its technical problem adopted is: the utility model provides an automobile single-tube shock absorber, includes single-tube damper, cylinder to and with cylinder sliding connection's piston rod and spring, piston rod upper portion is equipped with spring holder, bearing frame and connection pad from bottom to top in proper order along the axial, be equipped with the screw thread section on the cylinder outer wall, this cylinder bottom has cup jointed down spring holder and installation ear in proper order along axial direction top-down, and lower spring holder passes through threaded connection with the cylinder respectively with the installation ear, the spring both ends respectively with last spring holder and lower spring holder butt.

The utility model provides a technical principle that its technical problem adopted is: the user carries out the removal of top or below through rotatory lower spring holder, and then adjusts bumper shock absorber spring hardness, carries out the removal of top or below through rotatory installation ear, and then adjusts mounting height. The bearing seat is connected with a connecting disc, two mutually parallel mounting grooves are symmetrically formed in the connecting disc and used for enabling the connecting disc to be fixedly connected with the bearing seat through screws, two groups of screw holes corresponding to the mounting grooves are formed in the bearing seat, the number of the screw holes is two, the hole distance of each screw hole is smaller than the length of the corresponding mounting groove, the mounting positions of the screws in the mounting grooves are moved as required, and mounting at different positions is carried out. The one end threaded connection that the installation ear is close to lower spring holder has lock nut, sets up the recess along circumference evenly distributed on this lock nut, and this recess forms with instruments such as spanner, clamp and corresponds, and the user rotates through aforementioned instrument cooperation recess, and then adjusts the mounting height of bumper shock absorber. In addition, the bearing seat is disc-shaped, and the connecting disc is peach heart-shaped, so that the bearing seat is attractive in appearance, simple in structure, high in structural strength of parts and convenient to process.

The beneficial effects of the utility model reside in that: the height and hardness of the spring of the shock absorber can be adjusted by rotating the lower spring seat, the installation height can be adjusted by rotating the installation lug, and the hardness of the damper can be adjusted by rotating the adjusting knob. Meanwhile, the mounting position of the screw in the mounting groove can be moved according to requirements, so that mounting at different positions is realized, and the mounting effect that the shock absorber can be properly inclined is achieved. The single-cylinder damper can effectively eliminate the idle stroke problem caused by untimely compensation of oil, and reduce the noise generated when the oil passes through the valve block; secondly, the single-cylinder damping is different from the traditional double-cylinder damping, can effectively prevent bubbles in the cylinder barrel from being generated when oil moves at a high speed, prevents idle stroke caused by the bubbles, and completely absorbs resonance generated by the spring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein 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 without inventive work according to the drawings:

FIG. 1 is a schematic structural view of a single tube shock absorber for an automobile according to embodiment 1 of the present invention;

Fig. 2 is a sectional view of a cylinder in embodiment 1 of the present invention;

Fig. 3 is a front view of a bearing seat in embodiment 1 of the present invention;

Fig. 4 is a schematic view of connection between a connection disc and a bearing seat in embodiment 1 of the present invention;

Fig. 5 is a front view of a lower spring seat in embodiment 1 of the present invention;

Fig. 6 is a schematic mechanism diagram of a mounting lug in embodiment 1 of the present invention;

Fig. 7 is a structural view of an upper spring seat in embodiment 1 of the present invention;

Fig. 8 is a structural diagram of the lock nut in embodiment 1 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

in embodiment 1, as shown in fig. 1 and 2, an automobile single-tube shock absorber includes a single-tube damper 30, a cylinder 16, and a piston rod 06 and a spring 21 slidably connected to the cylinder 16, wherein an upper spring seat 05, a bearing seat 03 and a connecting disk 01 are sequentially disposed on an upper portion of the piston rod 06 from bottom to top along an axial direction, a threaded section 16a is disposed on an outer wall of the cylinder 16, a lower spring seat 18 and an installation lug 20 are sequentially sleeved on a bottom end of the cylinder 16 from top to bottom along the axial direction, the lower spring seat 18 and the installation lug 20 are respectively in threaded connection with the cylinder 16, and two ends of the spring 21 are respectively abutted to the upper spring seat 05 and the lower spring seat 18.

Further, as shown in fig. 3 and 4, the bearing seat 03 and the connecting plate 01 are fixedly connected by screws. The symmetry is equipped with two mounting grooves 01b that are parallel to each other on the connection pad 01, makes connection pad 01 and bearing frame 03 fixed connection through screw 07, just even be equipped with on the bearing frame 03 with two sets of screw holes 03d that mounting groove 01b corresponds, every group screw hole 03 d's quantity is three, and its hole interval is less than the length of mounting groove 01 b.

Further, as shown in fig. 4, a scale mark 01a is provided on the connecting disc 01, and the scale mark is convenient for a user to refer to different vehicle types, so as to adjust the installation position.

Further, as shown in fig. 6, the mounting lug 20 includes an inner hole having a thread, and a first mounting plate 20a and a second mounting plate 20b extending from end surfaces thereof in parallel to each other. The tail of the mounting lug 20 is provided with a gap 20c along the axis direction of the inner hole, and a locking threaded hole 20d is also arranged in the direction vertical to the gap 20c, in actual use, the mounting lug can be formed by processing a whole piece of aluminum alloy, and the left and right connecting plates and the barrel body form a streamline and are provided with reinforcing ribs, so that the overall strength of the mounting lug is improved; there is the gap through the back cutting to be equipped with the locking hole, pass the locking hole through bolt assembly and fix the installation ear, prevent that it is not hard up in going, improve its stability, and weight is half of traditional ironware.

Further, as shown in fig. 2 and 8, the cylinder 16 is provided with a lock nut 19, and 6 first adjusting bosses 19a are uniformly formed on the edge of the lock nut. One end of the mounting lug, which is close to the lower spring seat, is provided with a locking nut, and the locking nut is provided with adjusting bosses which are uniformly distributed along the circumferential direction and are grooves. By adopting the structure, the installation height of the shock absorber can be conveniently adjusted by the braking tool matched with the groove.

Further, as shown in fig. 1, 5 and 7, a deep groove ball bearing 05a is installed inside the upper spring seat 05, a metal gasket 23 is arranged between the upper spring seat and the spring 21, and the metal gasket 23 is arranged between the lower spring seat 18 and the spring 21; through setting up metal gasket, increased the area of contact of spring butt, improved overall structure's stability, set up the gasket simultaneously at the spring both ends and can also avoid going up the spring holder and be worn and torn because of the butt with lower spring holder, prolong its life. The deep groove ball bearing is embedded in the spring seat of the shock absorber, abnormal sound generated by the shock absorber when an automobile turns can be effectively avoided, the deep groove ball bearing adopts a 6302 bearing, the cost of the bearing is low, and the structural strength of the bearing is high. In addition, the specification of the metal gasket is phi 82 phi 62 phi 1 in consideration of the optimal contact area between the spring and the bearing seat.

Further, as shown in fig. 5, 8 second adjusting bosses 18a are formed on the edge of the lower spring seat 18; similar to the adjusting boss of the locking nut, the structure is adopted, so that the height and hardness of the shock absorber spring can be conveniently adjusted by the braking tool matched with the groove.

Further, a dust cover 14 and an internal buffer block 25 are arranged at the joint of the piston rod 06 and the cylinder 16. Wherein, the buffer block is used for carrying out cushioning effect to bounce and impact force, and the dust cover is used for reducing the noise of bumper shock absorber during operation, prevents simultaneously that dust, impurity from falling into. Dust cover and buffer block top-down one pass the piston rod in proper order and put on the guide holder terminal surface, and the dust cover is tightly embraced at the cylinder port, and it can effectually prevent that dust and impurity from getting into the oil blanket, and then avoids destroying oil blanket and polluting fluid. The dust cover is made of rubber TPV, has high toughness, oil resistance, environmental protection and recyclability, and can normally work at the temperature of minus 60-150 ℃.

Further, as shown in fig. 1 and 2, the single-cylinder damper 30 is composed of a cylinder 16, a floating piston 13, a floating piston seal ring 26, a guider 9, a guider seal ring 27, a guide seat 07, a main piston 12, an auxiliary piston 11, a nut 31, a large gasket 32, a small gasket 33, a piston rod 06, a limit ring 34, a turbulent flow ring 35, a framework oil seal 36 and a wire clamp spring 37. The inner bottom end of the cylinder 16 is connected with a floating piston 13 in a sliding manner, and in order to improve the sealing performance between the cylinder and the floating piston 13, a floating piston sealing ring 26 is further sleeved on the floating piston 13; the top end in the cylinder 16 is also connected with a guider 9 in a sliding way, and a guider sealing ring 27 is also sleeved on the guider 9 in order to improve the sealing property of the cylinder and the guider 9; the top end of the cylinder barrel 16 is further fixed with a guide seat 07, a piston assembly is further connected in the cylinder barrel in a sliding mode, the piston assembly comprises a main piston 12, an auxiliary piston 11, a nut 31, a large gasket 32 and a small gasket 33, the nut 31, the small gasket 33, the main piston 12, the auxiliary piston 11 and the large gasket 32 are sequentially sleeved on a piston rod 06 from bottom to top, the piston assembly is driven by the piston rod 06 to move up and down along the inner wall of the cylinder barrel, and a limit ring 34 and a turbulent flow ring 35 are further sleeved on the piston rod 06 between the piston assembly and the guide 9; a framework oil seal 36 is arranged below the guider 9, and a steel wire clamp spring 37 is fixed above the guider 9; when the automobile runs on a concave-convex road surface, the shock absorber is subjected to ground impact force, wherein the floating piston 13 forms a high-pressure air chamber at the bottom of the cylinder 16, and when the piston rod 06 drives the main piston 12 and the auxiliary piston 11 to be pressed into a certain position, the high-pressure air chamber rebounds the high-pressure air chamber, so that the shock absorber is kept at the original height.

The double-cylinder oil-gas hybrid damping device is different from the traditional double-cylinder oil-gas hybrid damping, oil liquid and gas are isolated through the floating piston to form an oil storage cavity and a high-pressure gas cavity, and the two cavities are not interfered with each other, so that bubbles generated by the oil liquid are avoided, and the risk of idle stroke formed by damping is reduced; the diameter of the piston and the cross section area of the piston compensation valve are increased, so that the oil amount compensated by the piston in unit time is increased, and effective oil compensation in shorter time is ensured; the single-cylinder damping adopts double pistons, namely a positive piston and a negative piston, when the speed of the secondary piston can be controlled to be slow, the stability of an automobile is ensured by adjusting oil of a valve needle, when the speed is high, the positive piston and the negative piston are simultaneously opened, the low-pressure cavity oil can be compensated in a shorter time, and the idle stroke and the failure of the shock absorber caused by the untimely compensation of the traditional damping at a high speed are avoided.

Further, as shown in fig. 2, the piston rod 06 is composed of an adjusting knob 06a, an adjusting steel wire 06b, a valve needle 06c, and a valve core 06d, the piston rod includes a long hole penetrating through the inside of the piston rod, the adjusting knob 06a is sleeved on the top of the piston rod 06 and is slidably connected with the piston rod, the adjusting steel wire 06b is embedded in the long hole inside the piston rod 06, the top of the adjusting steel wire is fixedly connected with the adjusting knob 06a, the valve core 06d is fixed at the bottom of the valve needle 06c, and the valve needle 06c is fixed at the bottom of the valve. The user drives the adjusting steel wire 06b to rotate by rotating the adjusting knob 06a, so that a gap between the valve needle 06c and the valve core 06d is changed, the oil drainage amount is controlled, and the effect of adjusting the hardness of the damper is achieved.

Specifically, as shown in fig. 2, the piston rod 06 drives the main piston 12 and the auxiliary piston 11 to move up and down repeatedly in the cylinder 16, so that the oil in the cylinder passes through the compression and recovery valve, thereby generating resistance. The resistance auxiliary spring resists impact force and inhibits the rapid rebound of the spring, so that the stability of the vehicle body is kept, and the comfort level of passengers is improved. In order to conveniently adjust the parameters of the damper and adapt to different road conditions, the adjusting knob 06a is arranged at the top of the piston rod, and the adjusting knob 06a is rotated to adjust the parameters of the damper, so that the damper is convenient and quick.

As shown in FIG. 6, the bottom end of the cylinder 16 is connected with a mounting lug 20 which is in threaded fit with the cylinder 16 and is used for connecting the shock absorber with the vehicle frame, and the mounting height of the shock absorber can be adjusted through the mounting lug 20 according to different use requirements. Meanwhile, the mounting lugs 20 are machined from an integral aluminum alloy, and are light in weight and high in strength. In order to conveniently adjust the installation height, one end of the installation lug 20 is provided with a locking nut 19, the locking nut 19 is provided with adjusting grooves which are uniformly distributed along the circumferential direction, and during adjustment, a special adjusting tool can be directly used for adjusting the installation height of the locking nut. Meanwhile, in order to ensure the connection strength, reinforcing ribs are arranged on the mounting plates 20a and 20b, the root part of each reinforcing rib is provided with an R angle, the back surface of each reinforcing rib is provided with a locking hole 20d, and after the mounting lugs 20d are adjusted in place, the mounting lugs 20 are locked through screws 20e, so that the mounted shock absorber is firmer.

As shown in fig. 3 and 4, in the present embodiment, the connection plate 01 is fixedly connected to the suspension of the vehicle body by a bolt on the top plate surface thereof. The bottom disc surface of the connecting disc 01 is fixedly connected with the bearing seat 03, two parallel grooves 01b are formed in the surface of the connecting disc 01 and are fixedly connected with the bearing seat 03 through screws 07, and the mounting position is adjusted through the parallel grooves.

Claims

1. the utility model provides an automobile single-tube shock absorber, includes single-tube damper (30), cylinder (16) to and piston rod (06) and spring (21) with cylinder (16) sliding connection, its characterized in that: piston rod (06) upper portion is equipped with spring holder (05), bearing frame (03) and connection pad (01) from bottom to top in proper order along axial direction, be equipped with screw thread section (16a) on cylinder (16) outer wall, spring holder (18) and installation ear (20) have been cup jointed down in proper order along axial direction top-down to this cylinder (16) bottom, and spring holder (18) and installation ear (20) pass through threaded connection with cylinder (16) respectively down, spring (21) both ends respectively with last spring holder (05) and spring holder (18) butt down.

2. The automotive mono-tube shock absorber as claimed in claim 1, wherein the bearing seat (03) is fixedly connected with the connecting disc (01) by a screw.

3. The mono-tube shock absorber for automobiles according to claim 1 or 2, characterized in that the connecting disc (01) is provided with graduation marks (01 a).

4. The vehicle mono-tube shock absorber according to claim 1, wherein the mounting lug (20) comprises an inner bore provided with a thread, the end surface of which extends a first mounting plate (20a) and a second mounting plate (20b) parallel to each other.

5. the automotive monotube shock absorber of claim 1, wherein the cylinder tube (16) is provided with a lock nut (19) and 6 first adjusting bosses (19a) are uniformly formed at the edge thereof.

6. The automobile mono-tube shock absorber as claimed in claim 1, wherein the deep groove ball bearing (05a) is arranged in the upper spring seat (05), a metal gasket (23) is sleeved between the upper spring seat and the spring (21), and the metal gasket (23) is sleeved between the lower spring seat (18) and the spring (21).

7. The automotive monotube shock absorber of claim 1 or 6, wherein 8 second adjusting bosses (18a) are opened at the edge of the lower spring seat (18).

8. The automotive mono-tube shock absorber according to claim 1, characterized in that the joint of the piston rod (06) and the cylinder (16) is provided with a dust cover (14) and an internal bumper (25).

9. The automobile single-cylinder shock absorber according to claim 1 or 8, wherein the single-cylinder damper (30) is composed of a cylinder barrel (16), a floating piston (13), a floating piston seal ring (26), a guider (9), a guider seal ring (27), a guide seat (07), a main piston (12), an auxiliary piston (11), a nut (31), a large gasket (32), a small gasket (33), a piston rod (06), a limit ring (34), a spoiler ring (35), a framework oil seal (36) and a steel wire clamp spring (37), the inner bottom end of the cylinder barrel (16) is slidably connected with the floating piston (13), the floating piston seal ring (26) is sleeved on the floating piston (13), the inner top end of the cylinder barrel (16) is slidably connected with the guider (9), the guider seal ring (27) is sleeved on the guider (9), the guide seat (07) is fixed at the top end of the cylinder barrel (16), still sliding connection has piston assembly in the cylinder, piston assembly includes main piston (12), vice piston (11), nut (31), big gasket (32), little gasket (33), wherein nut (31), little gasket (33), main piston (12), vice piston (11) and big gasket (32) overlap in proper order from bottom to top on piston rod (06), spacing ring (34) and vortex ring (35) have been cup jointed on piston rod (06), be equipped with skeleton oil blanket (36) in the below of director (9) to and be fixed with steel wire jump ring (37) in the top of director (9).

10. The automobile single-cylinder shock absorber according to claim 1 or 8, wherein the piston rod (06) is composed of an adjusting knob (06a), an adjusting steel wire (06b), a valve needle (06c) and a valve core (06d), the piston rod (06) comprises a long hole penetrating through the piston rod (06a), the adjusting knob (06a) is sleeved on the top of the piston rod (06) and is in sliding connection with the piston rod, the adjusting steel wire (06b) is embedded in the long hole inside the piston rod (06), the top of the adjusting steel wire is fixedly connected with the adjusting knob (06a), the valve core (06d) is fixed at the bottom of the valve needle (06c), and the valve needle (06c) is fixed at the bottom of the valve core (06 d).