CN216923009U

CN216923009U - Small-size hydraulic damper compact in length

Info

Publication number: CN216923009U
Application number: CN202220041922.7U
Authority: CN
Inventors: 王秀杰; 米存
Original assignee: Launch Design Inc ltd
Current assignee: Launch Design Inc ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-07-08
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a small hydraulic shock absorber with compact length, which comprises a bushing, an upper spring seat, a piston rod and a piston rod, wherein the bushing, the upper spring seat, the piston rod and the upper spring seat are welded together; the bottom of piston rod is located an oil storage section of thick bamboo, and the oil storage section of thick bamboo lower part outside is equipped with spring tray, and there is the tray recess spring tray upside, and the buffer block is hugged closely to the lower plane of spring seat of honour, and the downside of spring seat of honour is located the buffer block outside and is equipped with the seat of honour recess, and the outside cover of oil storage section of thick bamboo and buffer block is equipped with the spring, and the upside of spring is located the seat of honour recess, and its downside is located the tray recess. The shock absorber reduces the whole length of the shock absorber by using the mode that the shaft sleeve is sleeved at one end of the bushing and at the other end of the bushing, the shaft sleeve is not in direct contact with the nut, clearance treatment is carried out, the slotted gasket is added, and the nut is prevented from loosening due to relative rotation between the shaft sleeve and the nut.

Description

Small-size hydraulic damper compact in length

Technical Field

The utility model relates to the technical field of shock absorbers for small vehicles, in particular to a small hydraulic shock absorber with compact length.

Background

The piston rod and the spring upper seat of most small-size shock absorbers are connected through screw threads and are locked by matching nuts, so that the distance between the oil storage cylinder and the mounting center on the shock absorber is increased, the overall length of the shock absorber is increased, and the occupied arrangement space of the whole vehicle is large.

In order to realize the reduction of length or the convenience of shock absorber assembly, the fixed both ends of spring are fixed with the bifurcate for the bush respectively for middle-size and small-size shock absorber in the existing market. Bolt (nut) looseness may be produced in the use process, and the safety is poor.

Most shock absorber spring tray is the plane, for increasing the lifting surface, need carry out the terminal surface to the spring both ends and grind the flat processing, has increased the processing cost to the location of spring mounting is not considered.

Accordingly, those skilled in the art have provided a small hydraulic shock absorber having a compact length to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a small hydraulic shock absorber with compact length, which comprises a bushing, an upper spring seat, a piston rod and a piston rod, wherein the bushing, the upper spring seat, the piston rod and the three are welded together;

The bottom of the piston rod is positioned in the oil storage cylinder, a spring tray is arranged on the outer side of the lower part of the oil storage cylinder, a tray groove is formed in the upper side of the spring tray, the lower plane of the upper spring seat is tightly attached to the buffer block, an upper seat groove is formed in the lower side of the upper spring seat, which is positioned on the outer side of the buffer block, springs are sleeved on the outer sides of the oil storage cylinder and the buffer block, the upper side of each spring is positioned in the upper seat groove, and the lower side of each spring is positioned in the tray groove;

the lower part of the oil storage cylinder is positioned below the spring tray, a limiting block is arranged below the spring tray, a limiting groove is formed in the lower side of the spring tray, the limiting block is positioned in the limiting groove, and the limiting block is fixed on the outer side of the oil storage cylinder;

the shaft sleeve is installed to the lower extreme of an oil storage section of thick bamboo, is equipped with the axle in the shaft sleeve, and the one end threaded connection nut of axle, and be equipped with the fluting gasket between nut and the shaft sleeve.

Preferably: the spring upper seat is a stamping part.

Preferably, the following components: the shaft sleeve is connected with the oil storage cylinder in a welding mode.

Preferably: the shaft sleeve is in threaded connection with the shaft, and the shaft is embedded into the whole vehicle.

Preferably, the following components: the slotted gasket is in spline fit with the shaft.

Preferably: the matching end face of the shaft is higher than the shaft sleeve, and a gap is reserved between the shaft sleeve and the slotted gasket.

Preferably: the bottom is equipped with the bottom valve in the oil storage section of thick bamboo, and its top is equipped with the oil blanket, and is located the below of oil blanket in the oil storage section of thick bamboo and is equipped with guide holder, block rubber and toper stopper in proper order, and the block rubber sets up in the guide holder bottom, and the downside at the block rubber is connected to the toper stopper, and oil storage section of thick bamboo lateral wall position is equipped with the working cylinder.

Preferably: the piston rod passes oil blanket, guide holder, block rubber and toper stopper from top to bottom in proper order, and installs the piston valve in its bottom, and the downside of piston valve is equipped with piston valve nut, its and piston rod threaded connection.

The utility model has the technical effects and advantages that:

1. according to the spring upper seat and the spring seat groove structure, the contact area between the spring and the tray is increased under the condition that the end face of the spring is not ground to be flat, the processing cost is reduced, and the positioning function of spring installation is considered;

2. the shock absorber reduces the whole length of the shock absorber by using the mode that one end of the shock absorber is sleeved with the bushing and the other end of the shock absorber is sleeved with the bushing, the bushing is not directly contacted with the nut, clearance treatment is carried out, the slotted gasket is added, and the nut is prevented from loosening due to relative rotation between the bushing and the nut;

3. the utility model changes the connection mode of the upper spring seat and the piston rod, uses the welding mode to make the structure more compact, the length of the shock absorber smaller, improves the arrangement space of the whole vehicle, and changes the installation mode, the spring enters from the lower part, the spring tray enters from the lower part, the nut and the machining structure between the upper spring seat and the oil storage cylinder are removed, the distance between the oil storage cylinder and the installation point on the spring is shortened, the machining cost is reduced, and the assembly and the disassembly are more convenient;

4. According to the spring tray, the structure of the spring tray is changed, various grooves are added, the spring tray rotates after being limited by the limiting block, the limiting grooves and the limiting block are overlapped, the limiting grooves and the limiting block are fixed at opposite positions, the stress area of the tray and a spring is increased, the spring tray can be formed by punching directly, and the processing cost is saved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a sectional view taken along line B-B of fig. 2.

Fig. 4 is a partial sectional view taken along the line a-a in fig. 1.

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 1 during assembly of the spring tray past a stop.

Fig. 6 is a spring tray with adjustable spring rates.

In the figure:

1. a bushing; 2. a spring upper seat; 3. a buffer block; 4. a piston rod; 5. a spring; 6. an oil storage cylinder; 7. a spring tray; 8. a limiting block; 9. a shaft sleeve; 10. slotting a gasket; 11. a shaft; 12. a nut;

2-1, oil sealing; 2-2, a guide seat; 2-3, rubber blocks; 2-4, a conical limiting block; 2-5, a piston valve; 2-6, piston valve nut; 2-7, a working cylinder; 2-8, bottom valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Examples

Referring to fig. 1 to 5, in the present embodiment, a small hydraulic shock absorber with a compact length is provided, which includes a bushing 1, a spring upper seat 2, a piston rod 4, and three parts welded together, wherein the spring upper seat 2 and the piston rod 4 are both located below the bushing 1, the piston rod 4 is located at the center of the spring upper seat 2, the spring upper seat 2 is a stamping part, the forming is simple and the cost is low, the bottom of the piston rod 4 is located in an oil storage cylinder 6, a spring tray 7 is arranged outside the lower part of the oil storage cylinder 6, a tray groove is arranged on the upper side of the spring tray 7, the lower plane of the spring upper seat 2 is tightly attached to the buffer block 3, the lower side of the spring upper seat 2 is located outside the buffer block 3 and is provided with an upper seat groove, the springs 5 are sleeved outside the oil storage cylinder 6 and the buffer block 3, the upper sides of the springs 5 are located in the upper seat grooves, and the lower sides of the springs are located in the tray grooves;

a limiting block 8 is arranged below the spring tray 7 at the lower part of the oil storage cylinder 6, a limiting groove is arranged at the lower side of the spring tray 7, the limiting block 8 is arranged in the limiting groove, and the limiting block 8 is fixed at the outer side of the oil storage cylinder 6;

the axle sleeve 9 is installed to the lower extreme of an oil storage section of thick bamboo 6, and axle sleeve 9 is welded connection with an oil storage section of thick bamboo 6, and the internal diameter of spring tray 7 is greater than the volume scope of axle sleeve 9 to ensure to pass through smoothly, be equipped with axle 11 in the axle sleeve 9, both threaded connection, wherein, axle 11 buries whole car part, and the one end threaded connection nut 12 of axle 11, and be equipped with fluting gasket 10 between nut 12 and the axle sleeve 9, fluting gasket 10 and axle 11 are the spline fit.

As shown in fig. 5, the spring 5 enters from below, the spring tray 7 enters from below the damper through the boss 9, and a groove (tray groove) formed in an upper surface of the spring tray 7 is fitted to the spring 5 to press the spring 5.

Utilize the recess (spacing recess) of circle in spring tray 7 self, dodge and open stopper 8, come to stopper 8's top, then rotatory, spring 5 extrudees spring tray 7 and gives its downward power, makes the spacing recess of self lateral wall and stopper 8 coincidence, then fixed position, spring 5 extrudees spring tray 7 and gives its downward power and makes spring tray 7 and stopper 8 coincidence fixed.

As shown in fig. 4, the engaging end of the shaft 11 is higher than the shaft sleeve 9, so that the shaft sleeve 9 has a slight clearance with the slotted washer 10, and because of the clearance between the slotted washer 10 and the shaft sleeve 9, the shaft sleeve 9 swings or rotates during the operation of the damper and the nut 12 is not loosened.

The bottom of the oil storage cylinder 6 is provided with a bottom valve 2-8, the top of the oil storage cylinder is provided with an oil seal 2-1, a guide seat 2-2, a rubber block 2-3 and a conical limiting block 2-4 are sequentially arranged below the oil seal 2-1 in the oil storage cylinder 6, the rubber block 2-3 is arranged at the bottom of the guide seat 2-2, the conical limiting block 2-4 is connected to the lower side of the rubber block 2-3, a piston rod 4 sequentially penetrates through the oil seal 2-1, the guide seat 2-2, the rubber block 2-3 and the conical limiting block 2-4 from top to bottom, the bottom of the piston rod is provided with a piston valve 2-5, and the lower side of the piston valve 2-5 is provided with a piston valve nut 2-6 which is in threaded connection with the piston rod 4 to fix the piston valve 2-5;

Working cylinders 2-7 are arranged on the side wall of the oil storage cylinder 6;

the compression working principle of the shock absorber is shown in fig. 3, when the shock absorber works in a compression mode, the oil storage cylinder 6, the spring tray 7, the shaft 11, the shaft sleeve 9, the slotted gasket 10 and the bottom valves 2-8 move upwards, the piston valves 2-5 and the piston rod 4 move downwards relative to the shaft sleeve 9 and the like, the oil storage space is reduced, oil enters the upper oil storage space through the piston valves 2-5, and the upper end face of the oil storage cylinder 6 directly extrudes the buffer block 3.

The distance between the upper end surface of the oil storage cylinder 6 and the buffer block 3 and the compression stroke of the buffer block 3 are the working stroke of the shock absorber, and the distance between the oil storage cylinder 6 and the upper center of the shock absorber is reduced to the greatest extent.

Referring to fig. 6, the structure of the spring tray 7 is changed, and the adjusting round holes and the adjusting limiting grooves are added, so that the spring tray 7 can adjust the preload length of the springs 5 after the assembly of the shock absorber is completed;

the use tool inserts in adjusting the round hole, then rotates spring tray 7, makes stopper 8 enter into not among the limit groove of co-altitude, reaches the purpose of adjusting spring 5 rigidity.

The spring tray 7 can also be accessed from below the damper and then welded directly in place so that the springs 5 are no longer separately removable.

The spring tray 7 can also be made into a plane for processing convenience, and then a rubber gasket is added above the spring tray 7 to increase the stress area and positioning of the spring 5.

It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. A small-sized hydraulic shock absorber with compact length is characterized by comprising a bushing (1), an upper spring seat (2), a piston rod (4) and a sleeve, wherein the bushing (1), the upper spring seat (2) and the piston rod (4) are welded together, the upper spring seat (2) and the piston rod (4) are both positioned below the bushing (1), and the piston rod (4) is positioned in the center of the upper spring seat (2);

the bottom of the piston rod (4) is positioned in the oil storage cylinder (6), a spring tray (7) is arranged on the outer side of the lower portion of the oil storage cylinder (6), a tray groove is formed in the upper side of the spring tray (7), the lower plane of the upper spring seat (2) is tightly attached to the buffer block (3), an upper seat groove is formed in the lower side of the upper spring seat (2) and is positioned on the outer side of the buffer block (3), a spring (5) is sleeved on the outer sides of the oil storage cylinder (6) and the buffer block (3), the upper side of the spring (5) is positioned in the upper seat groove, and the lower side of the spring (5) is positioned in the tray groove;

A limiting block (8) is arranged below the spring tray (7) at the lower part of the oil storage cylinder (6), a limiting groove is arranged at the lower side of the spring tray (7), the limiting block (8) is arranged in the limiting groove, and the limiting block (8) is fixed at the outer side of the oil storage cylinder (6);

the lower end of the oil storage cylinder (6) is provided with a shaft sleeve (9), a shaft (11) is arranged in the shaft sleeve (9), one end of the shaft (11) is in threaded connection with a nut (12), and a slotted gasket (10) is arranged between the nut (12) and the shaft sleeve (9).

2. A small hydraulic shock absorber of compact length according to claim 1, characterised in that the upper spring seat (2) is a stamped part.

3. A compact length hydraulic shock absorber as claimed in claim 1, wherein the sleeve (9) is welded to the reservoir (6).

4. A compact length hydraulic shock absorber as claimed in claim 1, wherein the shaft sleeve (9) is threadedly connected to the shaft (11), the shaft (11) being embedded in the vehicle body.

5. A compact length hydraulic shock absorber as claimed in claim 1, wherein the slotted washer (10) is splined to the shaft (11).

6. A compact length hydraulic shock absorber as claimed in claim 1, wherein the mating end face of the shaft (11) is higher than the sleeve (9), the sleeve (9) having clearance with the slotted washer (10).

7. The small-sized hydraulic shock absorber with compact length as claimed in claim 1, characterized in that a bottom valve (2-8) is arranged at the bottom in the oil storage cylinder (6), an oil seal (2-1) is arranged at the top of the oil storage cylinder, a guide seat (2-2), a rubber block (2-3) and a conical limiting block (2-4) are sequentially arranged below the oil seal (2-1) in the oil storage cylinder (6), the rubber block (2-3) is arranged at the bottom of the guide seat (2-2), the conical limiting block (2-4) is connected to the lower side of the rubber block (2-3), and a working cylinder (2-7) is arranged at the side wall of the oil storage cylinder (6).

8. The small-sized hydraulic shock absorber with compact length as claimed in claim 1 or 7, characterized in that the piston rod (4) passes through the oil seal (2-1), the guide seat (2-2), the rubber block (2-3) and the conical limiting block (2-4) from top to bottom in sequence, the bottom of the piston rod is provided with the piston valve (2-5), and the lower side of the piston valve (2-5) is provided with the piston valve nut (2-6) which is in threaded connection with the piston rod (4).