Straight pipe of shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, in particular to a shock absorber straight pipe, a shock absorber inner pipe and a shock absorber outer pipe, the shock absorber outer pipe is connected to the outer side of the shock absorber inner pipe in a rotating mode, a shock absorption rod penetrates through the interior of the shock absorber inner pipe, and a shock absorber piston is installed at the bottom end of the shock absorption rod. The upper end and the lower end of the shock absorber inner pipe are each provided with a plurality of sets of oil through holes, and an adjusting mechanism is fixedly installed at the bottom end in the shock absorber inner pipe. The adjusting mechanism comprises a fixing ring fixedly connected to the bottom end of the interior of the shock absorber inner pipe, an adjusting ring is movably installed on the top of the fixing ring, and a plurality of sets of adjusting blocks are movably installed between the adjusting ring and the fixing ring. In addition, due to the fact that the total passing flow of the shock absorber oil is adjusted, the adjusted shock absorber oil can evenly flow through the multiple sets of oil passing holes, and the working stability of the shock absorber is further improved.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, specifically to a shock absorber straight tube. Background Technology

[0002] In existing technology, shock absorbers are driven by hydraulic pressure generated by a piston squeezing oil inside a straight tube. Due to space limitations, the straight tube cannot be too long. Therefore, existing technology uses a sleeve, with the inner tube coaxially sleeved inside the outer tube, forming two chambers. The oil can flow through the orifice connecting the two chambers. When the wheels bump, the piston inside the shock absorber moves up and down inside the sleeve. The oil inside the sleeve flows back and forth between the two chambers under the action of the piston's reciprocating motion. The friction between oil molecules and the friction between the oil and the orifice wall create resistance to the piston's movement, thus realizing the "damping" process of the shock absorber.

[0003] According to the search, CN218935124U discloses an adjustable damping shock absorber inner and outer tubes, including an outer tube and an inner tube. The inner tube runs through the outer tube, and a shock absorber piston is installed inside the shock absorber. A top oil seal cap is threaded onto the top of the inner tube, and a bottom sealing cap is threaded onto the bottom of the inner tube. An upper oil passage hole is opened at the top of the inner tube, and a lower oil passage hole is opened at the bottom of the inner tube.

[0004] The aforementioned utility model adjusts the damping by rotating the outer tube of the shock absorber to cover different numbers of upper and lower oil passages with the upper and lower rotating sealing rings. However, rotating the outer tube requires manual operation, which is impractical during use and reduces its applicability. Furthermore, when adjusting the damping by covering different numbers of oil passages, the shock absorber oil will only be discharged from the uncovered passages, resulting in uneven oil flow along the circumference and further reducing the working stability of the shock absorber.

[0005] Therefore, it is of great importance to design a shock absorber straight tube to solve the above-mentioned defects. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model designs a straight pipe for shock absorbers. This straight pipe aims to solve the technical problems of existing shock absorbers requiring manual damping operation, which reduces their applicability, and the uneven flow of shock absorber oil along the circumferential direction, further reducing the working stability of the shock absorber.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A shock absorber straight tube includes an inner shock absorber tube and an outer shock absorber tube. The outer shock absorber tube is rotatably connected to the outside of the inner shock absorber tube. A shock absorber rod passes through the inside of the inner shock absorber tube. A shock absorber piston is installed at the bottom end of the shock absorber rod. Multiple sets of oil passage holes are opened at both the upper and lower ends of the inner shock absorber tube. An adjustment mechanism is fixedly installed at the bottom end inside the inner shock absorber tube.

[0009] The adjustment mechanism includes a fixed ring fixedly connected to the bottom of the inner tube of the shock absorber. An adjustment ring is movably installed on the top of the fixed ring. Multiple sets of adjustment blocks are movably installed between the adjustment ring and the fixed ring. The outer side of the adjustment ring is fixedly connected to the outer tube of the shock absorber via a connecting rod. A transmission gear ring is fixedly connected to the top of the outer side of the outer tube of the shock absorber. A drive motor is fixedly installed at the top of the inner tube of the shock absorber, and the drive end of the drive motor meshes with the transmission gear ring via a drive gear.

[0010] As a preferred embodiment of this utility model, multiple sets of adjusting blocks are evenly distributed between the fixed ring and the adjusting ring. The tops of the multiple sets of adjusting blocks are slidably connected to the adjusting ring through guide grooves, and the bottoms of the multiple sets of adjusting blocks are slidably connected to the fixed ring through sliding grooves.

[0011] As a preferred embodiment of this utility model, a movable groove is provided in the inner wall of the inner tube of the shock absorber, and the connecting rod is slidably connected to the movable groove.

[0012] As a preferred embodiment of this utility model, the drive motor is fixedly connected to the inner tube of the shock absorber via a connecting frame, and the outer tube of the shock absorber is slidably connected to the connecting frame.

[0013] As a preferred embodiment of this utility model, the top end of the inner tube of the shock absorber is threaded with a top sealing cap, and a sealing sleeve is fitted between the top sealing cap and the shock absorber rod.

[0014] As a preferred embodiment of this utility model, the bottom end of the inner tube of the shock absorber is threadedly connected to a bottom cover, and a sealing gasket is fixedly connected to the inner side of the bottom cover. The bottom end of the outer tube of the shock absorber is slidably connected to the bottom cover through a rotating groove.

[0015] As a preferred embodiment of this utility model, an airtight piston is fitted at the top of the outer side of the inner tube of the shock absorber, and a sealing ring is fitted between the outer tube of the shock absorber and the inner tube of the shock absorber.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this invention, through the design of the adjustment mechanism, when adjusting the damping of the shock absorber, the drive motor is started to drive the drive gear to rotate, which in turn drives the outer tube of the shock absorber to rotate under the transmission of the transmission gear ring. With the connection of the connecting rod, the adjustment ring can be driven to rotate inside the inner tube of the shock absorber. When the driving adjustment ring rotates, under the guidance of multiple sets of guide grooves and the cooperation of multiple sets of sliding grooves, multiple sets of adjustment blocks can be driven to rotate synchronously, thereby adjusting the size of the gap formed at the center of the multiple sets of adjustment blocks. In turn, the damping is adjusted by adjusting the flow rate of the shock absorber oil through the gap. Not only is manual adjustment not required, but since the total flow rate of the shock absorber oil is adjusted, the adjusted shock absorber oil will flow evenly through multiple sets of oil passages, further improving the working stability of the shock absorber. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall internal structure of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of part of the adjustment mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the bottom structure of the fixing ring of this utility model;

[0023] Figure 6 This is a schematic diagram of the adjusting block structure of this utility model.

[0024] In the diagram: 1. Inner tube of shock absorber; 101. Top cover; 102. Sealing sleeve; 103. Bottom cover; 104. Sealing gasket; 105. Rotating groove; 106. Airtight piston; 2. Outer tube of shock absorber; 201. Sealing ring; 3. Shock absorber rod; 4. Shock absorber piston; 5. Oil passage hole; 6. Adjustment mechanism; 601. Fixed ring; 602. Adjusting ring; 603. Adjusting block; 604. Connecting rod; 605. Transmission gear ring; 606. Drive motor; 607. Drive gear; 608. Guide groove; 609. Slide groove; 610. Movable groove; 611. Connecting frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example: Please refer to Figures 1-6 This utility model provides a technical solution:

[0027] A shock absorber straight tube includes an inner shock absorber tube 1 and an outer shock absorber tube 2. The outer shock absorber tube 2 is rotatably connected to the outside of the inner shock absorber tube 1. A shock absorber rod 3 passes through the inside of the inner shock absorber tube 1. A shock absorber piston 4 is installed at the bottom end of the shock absorber rod 3. Multiple sets of oil passage holes 5 are opened at both the upper and lower ends of the inner shock absorber tube 1. An adjustment mechanism 6 is fixedly installed at the bottom end inside the inner shock absorber tube 1.

[0028] First, in this embodiment, the specific structure of the adjustment mechanism 6 is as follows:

[0029] The adjustment mechanism 6 includes a fixed ring 601 fixedly connected to the bottom of the inner tube 1 of the shock absorber. An adjustment ring 602 is movably mounted on the top of the fixed ring 601. Multiple sets of adjustment blocks 603 are movably mounted between the adjustment ring 602 and the fixed ring 601. The outer side of the adjustment ring 602 is fixedly connected to the outer tube 2 of the shock absorber via a connecting rod 604. A transmission gear ring 605 is fixedly connected to the top of the outer side of the outer tube 2 of the shock absorber. A drive motor 606 is fixedly mounted on the top of the inner tube 1 of the shock absorber, and the drive end of the drive motor 606 meshes with the transmission gear ring 605 via a drive gear 607. When adjusting the damping of the shock absorber, the drive motor 606 is started to drive the drive gear 607. The transmission ring 605 drives the outer tube 2 of the shock absorber to rotate. Under the connection of the connecting rod 604, the adjusting ring 602 can rotate inside the inner tube 1 of the shock absorber. When the adjusting ring 602 rotates, it can synchronously drive multiple sets of adjusting blocks 603 to rotate together, thereby adjusting the size of the gap formed by the center of the multiple sets of adjusting blocks 603. In turn, the damping is adjusted by adjusting the flow rate of the shock absorber oil through the gap. Not only is manual adjustment not required, but since the total flow rate of the shock absorber oil is adjusted, the adjusted shock absorber oil will flow evenly through the multiple sets of oil passages 5, further improving the working stability of the shock absorber.

[0030] Furthermore, multiple sets of adjusting blocks 603 are evenly distributed between the fixed ring 601 and the adjusting ring 602. The tops of the multiple sets of adjusting blocks 603 are slidably connected to the adjusting ring 602 through guide grooves 608, and the bottoms of the multiple sets of adjusting blocks 603 are slidably connected to the fixed ring 601 through sliding grooves 609. When the adjusting ring 602 is driven to rotate, under the guidance of the multiple sets of guide grooves 608 and with the cooperation of the multiple sets of sliding grooves 609, the multiple sets of adjusting blocks 603 can be driven to rotate synchronously, thereby adjusting the size of the gap formed at the center of the multiple sets of adjusting blocks 603. In turn, the damping is adjusted by adjusting the flow rate of the shock absorber oil through the gap size.

[0031] Then, a movable groove 610 is provided in the inner wall of the inner tube 1 of the shock absorber, and the connecting rod 604 is slidably connected to the movable groove 610. When the outer tube 2 of the shock absorber is driven to rotate, the connecting rod 604 slides inside the movable groove 610, thereby driving the adjusting ring 602 to rotate.

[0032] Furthermore, the drive motor 606 is fixedly connected to the inner tube 1 of the shock absorber via the connecting bracket 611, and the outer tube 2 of the shock absorber is slidably connected to the connecting bracket 611. The drive motor 606 is fixed to the outside of the inner tube 1 of the shock absorber via the connecting bracket 611, so that when it starts, it drives the drive gear 607 to rotate, and under the transmission of the transmission gear ring 605, it can drive the outer tube 2 of the shock absorber to rotate.

[0033] The top end of the inner tube 1 of the shock absorber is threadedly connected to a top cover 101. A sealing sleeve 102 is fitted between the top cover 101 and the shock absorber rod 3. The top cover 101 seals the top end of the inner tube 1 of the shock absorber, and the sealing sleeve 102 ensures the sealing between the shock absorber rod 3 and the top cover 101.

[0034] Secondly, the bottom end of the inner tube 1 of the shock absorber is threadedly connected to a bottom cover 103, and a sealing gasket 104 is fixedly connected to the inner side of the bottom cover 103. The bottom end of the outer tube 2 of the shock absorber is slidably connected to the bottom cover 103 through a rotating groove 105. The bottom cover 103 seals the bottom ends of the inner tube 1 and the outer tube 2 of the shock absorber, while the sealing gasket 104 ensures the sealing performance. When the outer tube 2 of the shock absorber rotates, its bottom end rotates in the rotating groove 105, thereby improving its rotational stability.

[0035] Finally, an airtight piston 106 is fitted at the top of the outer side of the inner tube 1 of the shock absorber, and a sealing ring 201 is fitted between the outer tube 2 of the shock absorber and the inner tube 1 of the shock absorber. Compressed gas is filled between the inner tube 1 and the outer tube 2 of the shock absorber and above the airtight piston 106, while shock absorber oil is filled below it. When the shock absorber oil expands due to heat, it can move upward with the airtight piston 106 to compress the internal gas, thereby preventing the shock absorber oil from leaking under high pressure.

[0036] In this embodiment, the specific implementation scenario is as follows: When adjusting the damping of the shock absorber, the drive motor 606 is started to drive the drive gear 607 to rotate. Under the transmission of the transmission gear ring 605, the outer tube 2 of the shock absorber rotates. Under the connection of the connecting rod 604, the adjusting ring 602 can rotate inside the inner tube 1 of the shock absorber. When the driving adjusting ring 602 rotates, under the guidance of multiple sets of guide grooves 608 and the cooperation of multiple sets of sliding grooves 609, multiple sets of adjusting blocks 603 can be rotated synchronously. This allows the size of the gap formed at the center of the multiple sets of adjusting blocks 603 to be adjusted. In turn, the damping is adjusted by adjusting the flow rate of the shock absorber oil through the gap. The entire operation process is simple and convenient. This utility model not only eliminates the need for manual adjustment, but also, because it adjusts the total flow rate of the shock absorber oil, the adjusted shock absorber oil will flow evenly through multiple sets of oil passages 5, further improving the working stability of the shock absorber.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock absorber straight tube comprising a shock absorber inner tube (1) and a shock absorber outer tube (2), characterized in that: The shock absorber outer tube (2) is rotationally connected to the outside of the shock absorber inner tube (1), the inside of the shock absorber inner tube (1) is penetrated by a shock absorbing rod (3), the bottom end of the shock absorbing rod (3) is provided with a shock absorber piston (4), the upper and lower ends of the shock absorber inner tube (1) are both provided with a plurality of groups of oil holes (5), and the bottom end of the inside of the shock absorber inner tube (1) is fixedly provided with an adjusting mechanism (6). The adjusting mechanism (6) comprises a fixed ring (601) fixedly connected to the bottom end of the inside of the shock absorber inner tube (1), an adjusting ring (602) movably mounted on the top of the fixed ring (601), a plurality of groups of adjusting blocks (603) movably mounted between the adjusting ring (602) and the fixed ring (601), a transmission gear ring (605) fixedly connected to the top end of the outside of the shock absorber outer tube (2), and a driving motor (606) fixedly mounted on the top end of the shock absorber inner tube (1), and the driving end of the driving motor (606) is engaged with the transmission gear ring (605) through a driving gear (607).

2. A shock absorber straight tube according to claim 1, characterized in that: A plurality of groups of the adjusting blocks (603) are equally spaced between the fixed ring (601) and the adjusting ring (602), the top of each of the plurality of groups of the adjusting blocks (603) is slidably connected with the adjusting ring (602) through a guide groove (608), and the bottom of each of the plurality of groups of the adjusting blocks (603) is slidably connected with the fixed ring (601) through a sliding groove (609).

3. A shock absorber straight tube as defined in claim 1, wherein: The inside wall of the shock absorber inner tube (1) is provided with a movable groove (610), and the connecting rod (604) is slidably connected with the movable groove (610).

4. The straight tube of claim 1, wherein: The driving motor (606) is fixedly connected with the shock absorber inner tube (1) through a connecting frame (611), and the shock absorber outer tube (2) is slidably connected with the connecting frame (611).

5. The straight tube of claim 1, wherein: The top end of the shock absorber inner tube (1) is threadedly connected with a top cover (101), and a sealing sleeve (102) is arranged between the top cover (101) and the shock absorbing rod (3).

6. A shock absorber straight tube as defined in claim 1, wherein: The bottom end of the shock absorber inner tube (1) is threadedly connected with a bottom cover (103), the inside of the bottom cover (103) is fixedly connected with a sealing gasket (104), and the bottom end of the shock absorber outer tube (2) is slidably connected with the bottom cover (103) through a rotating groove (105).

7. A shock absorber straight tube as defined in claim 1, wherein: The top end of the outside of the shock absorber inner tube (1) is sleeved with an airtight piston (106), and a sealing ring (201) is arranged between the shock absorber outer tube (2) and the shock absorber inner tube (1).

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