TWM597231U - Full-length height adjustable mechanism for shock absorber - Google Patents

Abstract

The invention relates to a full-length height adjustable mechanism for shock absorber that can be applied on an air bag or a hydraulic cylinder, or an adjustable mechanism at the top of a shock absorber.

This full-length height adjustable mechanism for shock absorber which includes a fixed flange, wherein has a cylinder. The cylinder contains a driving gear which is connected to the cylinder in a circumferential direction, and the axis is relatively fixed to the driving gear. Inside the driving gear, it is designed to have a lifting container which attaches to the thread of the driving gear. A driving motor is disposed to the fixed flange and the cylinder, which connects to the outer thread of the driving gear. The connection of the driving motor and the driving gear drives the lifting container to rise or fall, thereby achieving the mechanical application of a full-length height adjustment for shock absorber.

The invention can adjust the overall height of the vehicle, but does not change the essential of the stroke structure, the spring, and the performance of a shock absorber. This ensures that the entire shock absorber can maintain the optimal parameter after the adjustment of the vehicle’s height.

Description

Full-length variable shock absorber vehicle height adjusting mechanism

This new type of patent belongs to the field of automobiles, specifically a height adjustment mechanism for a full-length variable shock absorber.

Suspension is the general term for all force-transmitting connection devices between the car's frame (or load-bearing body) and the axle (or wheel). Its function is to transmit the force and torque between the wheel and the frame, and buffer The impact force transmitted to the frame or body from the uneven road surface and reduce the vibration caused thereby to ensure that the car can run smoothly.

The suspension includes shock absorbers. The shock absorbers include springs and dampers, which can first support the vehicle to make the body a certain distance from the ground, and secondly can offset the vibration brought by the car during the movement and improve the smoothness of the car; At present, most shock absorbers are fixed, and the length cannot be adjusted. That is, the distance between the body and the ground when the car is shipped from the factory is set. At this time, the spring length, elastic coefficient, damper and other parameters of the shock absorber All achieve the best results.

There is similar to pneumatic or hydraulic pressure, which can adjust the length and change the distance from the body to the ground. It can change the distance of the piston rod into the piston barrel by changing the position of the spring seat to adjust the overall length, as shown in Figure 1 , Which uses the inflation and deflation of the airbag 104 to adjust the height of the body. The shock absorber on the left is the factory-set standard value, and the right is the state of the shock absorber after inflation in the airbag. At this time, the piston rod 102 of the shock absorber The top moves upward at a distance of 40mm, and the axis of the piston rod 102 simultaneously moves upward at a distance of 40mm. The distance between the body and the ground increases by 40mm. At this time, the total length of the shock absorber (the length of the entire shock absorber when the piston rod is fully extended) ) No change, after the change, the parameters of the damper and the spring (airbag) have changed, especially the stroke. The initial position of the piston rod 102 in the piston cylinder 101 is the best position obtained after a lot of experiments and calculations. Self-adjusting, the overall performance changes after the parameters are changed, usually in the worse direction. Although the height of the body is changed, the parameters and performance are reduced, even when the piston rod is extended. The piston rod is too long to cause the piston rod to bend. As shown in Figure 1, the distance between the shock absorber rubber block and the piston cylinder is 40mm. After adjustment, the distance between the shock absorber rubber block and the piston cylinder is 80mm. The elongation distance is also less than 40mm, and the length of the piston rod extending out of the piston cylinder has changed. During the work process, the piston rod should have moved a distance of 40mm to hit the piston cylinder, but after adjustment, the piston rod cannot move 40mm. Impact on the piston cylinder has an impact on the shock absorption performance; and when passing through the pothole, the wheel should normally fall with the pothole, but the piston rod has been raised and its reach can be reduced, resulting in the wheel not contacting the pothole At the bottom, the shock absorber will pull the entire body down, affecting the shock absorption performance; if the piston rod extends too short of the piston cylinder, the shock absorber rubber 103 at the end of the piston rod will hit the surface of the piston cylinder in advance, resulting in the entire life of the shock absorber It is greatly reduced. At the same time, when using the airbag or hydraulic cylinder to adjust the shock absorber on the side of the original shock absorber, the component needs to be placed on the side of the original shock absorber, which occupies a large suspension space of the original shock absorber. When the hydraulic cylinder fails, the wheels will be shrunk within the fender, the entire shock absorber function disappears, and the vehicle cannot run normally.

In view of the shortcomings of the existing technology, the new patent provides a full length variable shock absorber vehicle height adjustment mechanism of the overall length, but does not change the structure and performance of the original shock absorber spring and shock absorber to ensure adjustment After the height of the car body, the entire shock absorber can still maintain the original best parameter performance.

In order to achieve the above purpose, the new patent provides the following technical solution: A full-length variable shock absorber vehicle height adjustment mechanism, including an airbag or a cylinder or a mechanical adjustment mechanism provided at the end of the shock absorber.

The mechanical adjustment mechanism includes a flange, and the flange is provided with an accommodating cylinder, and a driving ring gear is provided in the accommodating cylinder. The driving ring gear is rotationally connected with the accommodating cylinder in the circumferential direction and the axis direction is relatively fixed. A lifting bowl is provided in the driving ring gear, the lifting bowl is threadedly connected to the driving ring gear, a driving motor is provided on the flange or the accommodating cylinder, and the driving motor is connected to the outer teeth of the driving ring gear.

Further, a positioning ring is provided inside the accommodating cylinder, and the outer diameter of the driving ring gear is larger than the inner diameter of the positioning ring.

Further, the positioning ring is located at an opening of the side of the accommodating cylinder facing away from the flange, and the driving ring gear Axial against the positioning ring.

Further, the driving gear ring is provided with gear teeth on the outside, and the containing cylinder is provided with an annular groove into which the gear teeth extend toward the side facing the flange.

Further, the outer side of the lifting bowl is provided with a guide groove along the axial direction, and a guide rail is provided on the corresponding positioning ring on the accommodating cylinder.

Further, a side of the accommodating cylinder facing away from the flange is provided with a locking mechanism. The locking mechanism includes a locking ring gear and a locking motor. The locking motor is connected to the outer teeth of the locking ring gear. The inner side of the locking ring gear is threadedly connected to the outer side of the lifting bowl, and the axial direction of the locking ring gear is relatively fixed to the containing cylinder.

Further, a positioning cylinder is arranged above the accommodating cylinder, an inner ring groove is arranged inside the positioning cylinder, and a locking ring gear is arranged in the inner ring groove.

Further, the accommodating cylinder is provided with a through slot on the side corresponding to the driving motor, and the through slot is used for connecting the driving motor with the driving ring gear.

A vehicle height adjustment mechanism for a shock absorber, the vehicle height adjustment mechanism may be fixed at the upper end of the shock absorber or the lower end of the shock absorber.

Compared with the prior art, the beneficial effect of the new patent is that the height adjustment mechanism of the full-length variable shock absorber is installed on the end of the shock absorber. The distance between the flanges changes. During this process, the shock absorber is always synchronized with the lifting bowl, but the shock absorber itself does not have any structural changes, and will not occupy the length of the original shock absorber and reduce the original Stroke; and the entire mechanical adjustment mechanism adopts a clever ring-sleeve structure, which forms both circumferential rotation and axis movement inside. The structure is compact, and the lifting bowl can be adjusted more accurately by at least two stages of deceleration; the overall does not change the shock absorber The original design performance does not occupy the original hanging space, avoiding the inability to drive under the fault.

1: flange

2: containing tube

3: lifting bowl

4: Guide groove

6: Drive ring gear

7: locating ring

8: Thrust needle roller bearings

9: Guide rail

10: Shock absorber

11: Drive motor

12: Variable speed gear box

14: gearbox output gear

26: through slot

51: positioning cylinder

52: Lock the motor

53: Lock the ring gear

61: Gear teeth

81: Needle bearing

101: Piston cylinder

102: Piston rod

103: shock-absorbing rubber block

104: airbag

105: spring

106: Mechanical adjustment mechanism

513: inner ring groove

Figure 1 is a comparison diagram of shock absorber changes when adjusting vehicle height in the prior art; Figure 2 is a comparison diagram 1 of changes in shock absorber assembly when adjusting vehicle height in the new patent; Figure 3 is a mechanical adjustment mechanism in the new patent Comparison of shock absorber assembly changes when adjusting vehicle height Figure 4 is a schematic diagram of the structure of the new patented mechanical adjustment mechanism when it is placed on the upper end of the shock absorber; Figure 5 is a sectional view of DD in Figure 4; Figure 6 is an enlarged view of E in Figure 5; Figure 7 is a new patent The structure diagram of the middle mechanical adjustment mechanism when it is set at the lower end of the shock absorber; Figure 8 is the cross-sectional view of CC in Figure 7; Figure 9 is the perspective structural diagram of the mechanical adjustment mechanism in the new patent; Figure 10 is the mechanical adjustment in the new patent Sectional view of the mechanism; Figure 11 is an exploded view of the mechanical adjustment mechanism in the new patent.

The embodiments of the new patent will be further described with reference to FIGS. 2 to 11.

A full-length variable shock absorber vehicle height adjustment mechanism includes an airbag or a cylinder or a mechanical adjustment mechanism provided at the end 10 of the shock absorber. When adjusting the vehicle height, the vehicle height adjustment mechanism is in motion, and the shock absorber 10 The vehicle height adjustment mechanism increases the length of the shock absorber assembly (including the shock absorber itself and the vehicle height adjustment mechanism), and the vehicle rises at this time; otherwise, the vehicle height adjustment mechanism makes the length of the shock absorber assembly Reduce, so that the car is lowered.

In this embodiment, the airbag, the cylinder, or the mechanical adjustment mechanism 106 is preferably provided at the end of the shock absorber 10 to achieve the condition that the shock absorber 10 itself is not changed, but the length of the shock absorber assembly changes.

As shown in FIG. 2, it shows a schematic diagram of adjusting the height of the vehicle when the mechanical adjustment mechanism 106 is provided at the upper end of the shock absorber 10 (that is, between the spring of the shock absorber and the upper seat), of which the full-length variable shock absorber on the left The state of the vehicle height adjustment mechanism is set at the factory. The right side is the state diagram after the length of the full-length variable shock absorber vehicle height adjustment mechanism is increased. The length of the mechanical adjustment mechanism 106 is increased, and the length increase value is 40mm. 40mm high, and the axis of the piston rod 102 of the shock absorber is the same as the left side (factory setting position), and the spring 105 has not changed in any way. The extension distance of the shock absorber is also unchanged, that is, the shock absorber 10 itself has not changed, and at this time, the length of the full-length variable shock absorber vehicle height adjustment mechanism is increased to achieve the purpose of increasing the vehicle height, the shock absorber 10 is still It can maintain the best performance at the factory setting.

As shown in Fig. 3, it shows a comparison diagram of adjusting the height of the vehicle when the mechanical adjustment mechanism 106 is provided at the lower end of the shock absorber of the shock absorber (that is, between the piston cylinder of the shock absorber and the lower seat), wherein the total length of the left side is variable The state of the height adjustment mechanism of the type shock absorber is set at the factory. The right side is the state diagram after the length of the height adjustment mechanism of the variable-length shock absorber is increased. The distance between the damping rubber block and the piston cylinder is 30mm at the beginning. The length of the mechanical adjustment mechanism is increased, and the length increase value is 40mm. At this time, the height of the vehicle is increased by 40mm, and the distance between the damping rubber block and the piston cylinder is still maintained at 30mm, that is, the shock absorber itself has no change, and its piston The length of the rod extending from the piston barrel and the deformation of the spring are maintained in the factory state. At this time, the length of the full-length variable shock absorber vehicle height adjustment mechanism is increased to achieve the purpose of increasing the vehicle height.

The mechanical adjustment mechanism includes a flange 1, a receiving cylinder 2 is provided on the flange 1, a driving ring gear 6 is provided in the receiving cylinder 2, the driving ring gear 6 is rotationally connected to the receiving cylinder 2 in the circumferential direction and has an axis The direction is relatively fixed, the driving ring gear 6 is provided with a lifting bowl 3, the lifting bowl 3 is screwed with the driving ring gear 6, the flange 1 or the accommodating cylinder 2 is provided with a driving motor 11, the driving The motor 11 is connected to the outer teeth of the drive ring gear 6.

As shown in FIG. 2, a state diagram when the mechanical adjustment mechanism 106 is provided at one end of the piston rod 102, at this time, the lifting bowl 3 is connected to the spring seat of the shock absorber 10 and the end of the piston rod 102 and is relatively fixed; as shown in FIG. 3, At this time, the mechanical adjustment device 106 is provided at one end of the piston cylinder 101, and at this time the lifting bowl is connected to the end of the piston cylinder 101; the outer wall of the piston cylinder can also be provided with threads to serve as a lifting bowl, so that the threads of the outer wall of the piston cylinder and the driving teeth The ring 6 only needs to be matched, especially for the twisted teeth shock absorber, as shown in FIGS. 7 and 8, the threads can be connected into one body.

In this embodiment, the drive motor 11 is a servo motor. The shaft end of the drive motor 11 is connected to the transmission gearbox 12. A gearbox output gear 14 is provided in the output gearbox 12. The rotation of the drive motor 11 causes the drive ring gear 6 to rotate. Make a circular motion in the accommodating cylinder 2 and at the same time drive the ring gear 6 to be relatively fixed with the accommodating cylinder 2 in the axis direction, and then the lifting bowl 3 will be close to or away from the flange due to the threaded engagement of the drive ring gear 6 The disc 1 moves in the direction, so that the length of the entire full-length variable shock absorber vehicle height adjustment mechanism changes. During the adjustment process, it will not affect the spring 105. The amount of compression and the extension length of the piston rod 102, and after the adjustment is completed, it can realize the double self-locking function through the cooperation of the thread and the teeth.

Wherein, the driving ring gear 6 and the accommodating cylinder 2 are relatively fixed in the axial direction by digging grooves on the side wall of the accommodating cylinder 2 and putting the driving ring gear 6 into it, or arranging several sections on the inner wall of the accommodating cylinder 2 circumferentially For the concealed protrusion, the drive ring gear 6 is located between the protrusion and the flange 1.

A positioning ring 7 (positioning ring 7 can be formed by connecting several protrusions together) is preferably provided inside the accommodating cylinder 2 in this embodiment. The outer diameter of the driving ring gear 6 is larger than the inner diameter of the positioning ring 7, in When the driving ring gear 6 is placed inside the accommodating cylinder 2, the positioning ring 7 and the flange 1 position at least a part of the driving ring gear 6 between the two, so that the driving ring gear 6 is limited in the axial direction.

For ease of production and installation, the positioning ring 7 preferred in this embodiment is located at the opening of the side of the accommodating cylinder 2 facing away from the flange 1, and the driving ring gear 6 axially interferes with the positioning ring 7, ie the entire driving ring gear 6 is completely Located between the positioning ring 7 and the flange 1, the positioning ring 7 can be formed by grooving the inner wall of the accommodating cylinder 2, or after the accommodating cylinder 2 is formed, it can be welded or fixedly connected by other means at the opening of the accommodating cylinder 2 A ring of inner flange forms a positioning ring 7, preferably a groove is used to form the positioning ring 7. At this time, the overall structure of the accommodating cylinder 2 is stronger, in which the outer wall of the driving ring gear 6 abuts the inner wall of the accommodating cylinder 2, and the driving ring gear The two sides of the 6 axis are in contact with the flange 1 and the positioning ring 7 respectively, so that the position of the entire drive ring gear 6 is relatively fixed, to avoid misalignment or sway during use. In practical application, the relative movement position will be added molybdenum disulfide Lubricating oil to reduce friction.

Among them, preferably, a needle bearing 81 is provided between the driving ring gear 6 and the inner wall of the accommodating cylinder 2, and a thrust needle bearing 8 is provided between the driving ring gear 6 and the flange 1 to reduce friction.

The driving ring gear 6 is provided with gear teeth 61 on the outside, and the accommodating cylinder 2 is provided with an annular groove into which the gear teeth 61 extend toward the side of the flange 1. The gear connected to the driving motor 11 cooperates with the gear teeth 61. The tooth 61 can protrude from the outer wall of the driving ring gear 6, and at this time, the accommodating cylinder 2 is provided with an annular groove; in this embodiment, it is preferable to provide the gear teeth 61 on the surface of the driving ring gear 6.

In this embodiment, a guide groove 4 is provided on the outer side of the lifting bowl 3 along the axial direction, and a guide rail 9 is provided on the corresponding positioning ring 7 on the accommodating cylinder 2, wherein the guide groove 4 and the guide rail 9 make the lifting bowl 3 It can only move along the axis direction to avoid the synchronous rotation of the lifting bowl 3 and the driving ring gear 6 during the adjustment process, in which the guide groove 4 and the guide rail 9 are arranged in pairs, that is, one guide groove 4 corresponds to one guide rail 9, this embodiment In the example, three pairs are preferred, and the three pairs are evenly distributed on the circumference, of course, any integer Yes, and preferably all adopt a circumferential distribution structure.

The guide groove 4 does not penetrate the lift bowl 3 toward the flange 1 side. During the adjustment, the lift bowl 3 has a certain adjustment space to prevent the lift bowl 3 from being separated from the driving ring gear 6.

In this embodiment, a side of the receiving cylinder 2 facing away from the flange 1 is provided with a locking mechanism. The locking mechanism includes a locking ring gear 53 and a locking motor 52. The locking motor 52 and the locking The outer teeth of the ring gear 53 are connected, the inner side of the locking ring gear 53 is threadedly connected to the outer side of the lifting bowl 3, the locking ring gear 53 is relatively fixed in the axial direction with the accommodating cylinder 2, and the locking motor 52 preferably also uses a servo motor.

And preferably, a positioning cylinder 51 is provided above the accommodating cylinder 2, an inner ring groove 513 is provided inside the positioning cylinder 51, and a locking ring gear 53 is provided in the inner ring groove 513, so as to achieve the locking of the ring gear 53 on the shaft To fix, the locking motor 52 is fixed on the side wall of the receiving cylinder 2 or the side wall of the locking ring gear 53, which can be determined according to the axial length of the locking ring gear 53, if the axial length of the locking ring gear 53 is sufficient, It is directly arranged on the side wall of the locking ring gear 53, otherwise it is preferably fixed on the side wall of the accommodating cylinder 2.

The locking ring gear 53 can rotate in the inner circumference of the positioning cylinder 51, and a hole is provided in the positioning cylinder 51 for the teeth of the locking motor 52 and the locking ring gear 53 to be connected. After the adjustment of the lifting bowl 3 by the driving motor 11 is completed, The locking motor 52 rotates the locking ring gear 53. At this time, the locking ring gear 53 and the driving ring gear 6 fix the lifting bowl 3 together. The locking ring gear 53 can eliminate the driving ring gear 6 and the lifting when the driving motor 11 is adjusted. The thread gap between the bowls 3 fixes the position of the lifting bowl 3 firmly; of course, during the adjustment of the lifting bowl 3, the driving motor 11 and the locking motor 52 work at the same time, that is, the driving ring gear 6 and the locking ring gear 53 rotate simultaneously. And the rotation is in the same direction to make the lifting bowl 3 move axially. After completion, the driving motor 11 stops, and the locking motor 52 can be rotated in the forward or reverse direction to lock the lifting bowl 3 with a screw thread. Moreover, it is preferable that the same guide rail 9 as the positioning ring 7 is provided on the axial side of the positioning cylinder 51, especially the side of the positioning cylinder 51 facing away from the flange 1.

In the preferred embodiment, the accommodating cylinder 2 is provided with a through slot 26 corresponding to the drive motor 11 side. The through slot 26 is used for connecting the drive motor 11 with the drive ring gear 6, and the gear connected to the drive motor 11 is extended into The driving ring gear 6 is connected. In order to prevent dust from entering, the gear and the through slot 26 will be blocked by the cover in practice.

The through groove 26 can be formed by the side wall of the accommodating cylinder 2, and a pad can be added between the accommodating cylinder 2 and the flange 1, and a through groove 26 is naturally formed between the accommodating cylinder 2 and the flange 1.

The preferred driving motor 11 in this embodiment is located on the side of the accommodating cylinder 2, and the driving motor 11 is fixed to On the side of the accommodating cylinder 2, the drive motor 11 can always maintain the same position as the drive ring gear 6, and the positions of the three remain relatively stationary.

In this embodiment, the preferred receiving tube 2 is connected to the flange 1 by bolts.

During installation, first put the needle roller bearing into the accommodating cylinder 2, and then the lifting bowl 3 and the driving ring gear 6 are screwed together, and then integrated into the accommodating cylinder 2, so that the guide groove 4 on the driving ring gear 6 Align with the guide rail 9 on the positioning ring 7, and make the gear teeth 61 of the driving ring gear 6 completely into the annular groove, and then put the thrust needle roller bearing on the surface of the driving ring gear, and finally place the flange 1 and the accommodating cylinder 2 It can be fixed, and the locking ring gear 53, the positioning cylinder 51 and the locking motor 52 are installed from the other side of the lifting bowl 3, and can be finally assembled.

Preferably, a waterproof cover is provided between the driving motor and the accommodating cylinder, and a waterproof cover is also preferably provided at the locking mechanism.

The overall structure is very compact, and the operation of the adjustment process is stable, completely avoiding the interference caused by the spring 105 of the shock absorber 10 or the shock absorber. Similarly, after the adjustment, there is no parameter change to the original spring or shock absorber. Just adjusting the distance between the body and the ground, but still maintaining the original best performance of the shock absorber 10, can be adjusted while the car is stopped or even traveling.

1: flange

8: Thrust needle roller bearings

61: Gear teeth

6: Drive ring gear

81: Needle bearing

2: containing tube

26: through slot

9: Guide rail

7: locating ring

3: lifting bowl

4: Guide groove

51: positioning cylinder

513: inner ring groove

53: Lock the ring gear

Claims (10)

A full-length variable shock absorber vehicle height adjustment mechanism is characterized by comprising an airbag or an oil cylinder or a mechanical adjustment mechanism provided at the end of the shock absorber. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 1 of the patent application range is characterized in that the mechanical adjustment mechanism includes a flange, and the flange is provided with an accommodating cylinder, and the accommodating cylinder A driving ring gear is arranged inside, the driving ring gear is rotatably connected with the circumferential direction of the accommodating cylinder and the axis direction is relatively fixed, the driving ring gear is provided with a lifting bowl, the lifting bowl is threadedly connected with the driving ring gear, and the flange Or a driving motor is provided on the accommodating cylinder, and the driving motor is connected to the outer teeth of the driving ring gear. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 2 of the patent application range is characterized in that: a positioning ring is provided inside the accommodating cylinder, and the outer diameter of the driving ring gear is larger than the inner diameter of the positioning ring. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 3 of the patent application range is characterized in that: the positioning ring is located at an opening of the side of the accommodating cylinder facing away from the flange, and the driving ring gear axially interferes Locating ring. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 4 of the patent application range is characterized in that: the driving ring gear is provided with gear teeth on the outside, and the receiving cylinder is provided with a supply wheel on the side facing the flange An annular groove into which the teeth extend. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 5 of the patent application range is characterized in that: the outer side of the lifting bowl is provided with a guide groove along the axial direction, and the corresponding positioning ring is provided on the accommodating cylinder Guide rail. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 6 of the patent application range is characterized in that a locking mechanism is provided on the side of the accommodating cylinder facing away from the flange, and the locking mechanism includes a locking mechanism A ring gear and a locking motor, the locking motor is connected to the outer teeth of the locking ring gear, the inner side of the locking ring gear is threadedly connected to the outer side of the lifting bowl, and the locking ring gear is axially fixed relative to the receiving cylinder. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 7 of the patent application range is characterized in that: a positioning cylinder is provided above the accommodating cylinder, an inner ring groove is arranged inside the positioning cylinder, and the ring gear is locked Set in the inner ring groove. The full-length variable shock absorber vehicle height adjustment mechanism according to claim 8 of the patent application range is characterized in that the accommodating tube is provided with a through slot on the side corresponding to the drive motor, and the through slot is used for connecting the drive motor with the drive ring gear. A shock absorber including the vehicle height adjustment mechanism as claimed in claim 9 of the patent application range is characterized in that the vehicle height adjustment mechanism can be fixed to the upper end of the shock absorber or the lower end of the shock absorber.

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