High-strength adjustable shock absorber bottom cylinder

Abstract

The utility model belongs to the technical field of electric tricycle shock absorber, concretely relates to a high strength adjustable shock absorber bottom cylinder, include: bottom cylinder body, it is by plastic steel alloy integrated processing forming, as the link and support part of shock absorber, front wheel axle hole, it is horizontally set up in bottom cylinder body lower extreme, is set in the outside of front wheel axle, makes shock absorber and front wheel link, spring mounting seat, it is located bottom cylinder top, is used to install shock spring, the utility model discloses through plastic steel alloy structure, has improved the tenacity and strength of bottom cylinder surface, has prolonged the life, simultaneously through adjustable device, makes the stroke of spring switch among three steps, adapts to different spring compression demand from no load to full load.

Description

Technical Field

[0001] This utility model belongs to the technical field of shock absorbers for electric tricycles, specifically relating to a high-strength adjustable shock absorber base cylinder. Background Technology

[0002] Shock absorbers are a crucial component of the suspension system in electric tricycles, primarily functioning to ensure a smoother ride and cushion vibrations and impacts from uneven road surfaces. Typically, shock absorbers employ a two-way action cylindrical structure, which effectively absorbs and dissipates vibrations and impacts from the road surface, improving ride smoothness and passenger comfort. Because shock absorbers frequently operate under high loads, they are also among the most vulnerable parts of electric tricycles, especially the springs within them. After long-term wear and tear, the springs' elasticity diminishes significantly, affecting both shock absorption and the vehicle's load-bearing capacity. The conventional approach is to replace the springs directly; however, this requires disassembling the shock absorber, resulting in high maintenance costs, significant material waste, and no increase in the spring's load-bearing capacity. Utility Model Content

[0003] The purpose of this utility model is to provide a high-strength adjustable shock absorber base cylinder, comprising: a base cylinder body, which is integrally formed from plastic steel alloy, serving as the connection and support part of the shock absorber; a front wheel axle hole, which is horizontally opened at the lower end of the base cylinder body and sleeved on the outside of the front wheel axle, so that the shock absorber is connected to the front wheel; and a spring mounting seat, which is located at the top of the base cylinder and is used to install the shock absorber spring.

[0004] Preferably, the spring mounting base has a ring of mounting bosses, and a ring of equally spaced square limiting blocks is provided above the mounting bosses.

[0005] Preferably, it also includes a spring adjusting ring, which is sleeved on the spring mounting base.

[0006] Preferably, a spring limiting boss is provided on the outside of the spring adjusting ring, and an adjusting block with the same number as the limiting block is provided below the spring limiting boss.

[0007] Preferably, each of the adjustment blocks is divided into a first step block, a second step block, and a third step block from left to right, and the longitudinal lengths of the first step block, the second step block, and the third step block decrease sequentially.

[0008] The beneficial effects of this utility model are: The base cylinder body is integrally molded from plastic-steel alloy, so its friction and lubrication are better than that of pure aluminum, and it has the advantage of noise reduction; the base cylinder body is not easy to break when subjected to external impact, has good toughness, and does not require secondary painting, effectively extending the service life of the base cylinder body.

[0009] By adjusting the stepped structure of the first, second, and third steps in the shock absorber, the spring stroke can be quickly shortened after long-term fatigue and elasticity decline, thereby increasing the spring strength. This increases the load-bearing capacity of the shock absorber without replacing the spring, effectively widening the load-bearing capacity range of the spring and improving the maintenance efficiency of the shock absorber.

[0010] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0011] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model; Figure 2 This is a schematic diagram of the bottom cylinder body surface of an embodiment of this utility model; Figure 3 This is a structural diagram of the spring adjusting ring according to an embodiment of the present invention.

[0014] In the picture: 1. Bottom cylinder body, 2. Front wheel axle hole, 3. Spring mounting seat, 4. Mounting boss, 5. Limiting block, 6. Spring adjusting ring, 7. Spring limiting boss, 8. Adjusting block, 801 first step block, 802 second step block, 803 third step block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] like Figures 1 to 3 As shown, this embodiment provides a high-strength adjustable shock absorber base cylinder, including: a base cylinder body 1, which is integrally formed from plastic steel alloy, serving as the connection and support part of the shock absorber. This material allows the base cylinder body 1 to maintain lightweight characteristics while achieving a tensile strength of 350MPa or higher and an impact toughness of 80kJ / m² or higher, effectively solving the problem of stress concentration in conventional metal materials; moreover, the friction and lubrication properties of plastic steel alloy are better than those of pure aluminum, and it has the advantage of noise reduction. The base cylinder body 1 is not easily broken when subjected to external impact, has good toughness, and does not require secondary painting, effectively extending the service life of the base cylinder body 1; a front wheel axle hole 2, which is horizontally opened at the lower end of the base cylinder body 1 and sleeved on the outside of the front wheel axle, connecting the shock absorber to the front wheel. The inner wall is inlaid with a self-lubricating copper alloy bushing to ensure that the radial clearance with the front wheel axle is controlled between 0.05-0.1mm, ensuring both rotational flexibility and preventing axial movement; and a spring mounting seat 3, located at the top of the base cylinder, used to install the shock absorber spring.

[0017] The spring mounting base 3 has a ring of mounting bosses 4, which in this embodiment are three equidistant mounting bosses 4, forming an integral load-bearing structure that can withstand the fatigue stress generated by continuous spring compression. A ring of equidistant square limiting blocks 5 is also provided above the mounting bosses 4. It also includes a spring adjusting ring 6, which is sleeved on the spring mounting base 3. A ring of spring limiting bosses 7 is provided outside the spring adjusting ring 6, and a ring of adjusting blocks 8, the same number as the limiting blocks 5, is provided below the spring limiting bosses 7, which in this embodiment are three equidistant adjusting blocks 8. The spring adjusting ring 6 itself is not fixed to the spring mounting base 3; it acts as a movable part to adjust the relationship between the spring mounting base 3 and the spring itself. Therefore, the spring adjusting ring 6 can be manually changed by technicians to adjust the spring stroke.

[0018] The specific adjustment structure is as follows: Figure 1 Assembly style and Figure 3 As shown in the independent structure of the spring adjusting ring 6, each adjusting block 8 is divided into a first step block 801, a second step block 802, and a third step block 803 from left to right. The longitudinal lengths of the first step block 801, the second step block 802, and the third step block 803 decrease sequentially, forming a stepped adjusting mechanism. It can be seen that the first step block 801, the second step block 802, and the third step block 803 are connected by a ramp transition, as shown in the figure. Figure 1 The state when the middle adjusting block 8 and the third step block 803 are in contact is the longest spring travel. When the spring fatigue increases, that is, when the damping effect is greatly reduced, the first step block 801 or the second step block 802 can be manually rotated to the position where it is in contact with the adjusting block 8, thereby shortening the spring travel.

[0019] In summary, the core principle of this embodiment lies in the following: The integrated molding technology of plastic-steel alloy eliminates the stress corrosion risk of traditional welded structures, resulting in better frictional lubrication than pure aluminum and noise reduction advantages; the base cylinder body is less prone to breakage under external impact, exhibiting good toughness, and eliminating the need for secondary painting, thus increasing fatigue life to more than three times that of traditional steel base cylinders. Manual adjustment of the adjusting block 8 allows for stepped switching of the spring stroke, enabling rapid shortening of the spring stroke after long-term fatigue and elasticity reduction, thereby increasing spring strength. This increases the load-bearing capacity of the shock absorber without replacing the spring, effectively broadening the spring's load-bearing range and improving the maintenance efficiency of the shock absorber. All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0020] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A high-strength adjustable shock absorber base cylinder, characterized in that, include: The bottom cylinder body (1) is integrally formed from plastic steel alloy and serves as the connection and support part of the shock absorber; The front wheel axle hole (2) is horizontally opened at the lower end of the bottom cylinder body (1) and sleeved on the outside of the front wheel axle so that the shock absorber is connected to the front wheel; Spring mounting bracket (3), located at the top of the bottom cylinder, is used to install the shock-absorbing spring.

2. The high-strength adjustable shock absorber base cylinder according to claim 1, characterized in that: The spring mounting base (3) has a ring of mounting bosses (4), and a ring of equally spaced square limiting blocks (5) is also provided above the mounting bosses (4).

3. The high-strength adjustable shock absorber base cylinder according to claim 2, characterized in that: It also includes a spring adjusting ring (6), which is sleeved on the spring mounting base (3).

4. The high-strength adjustable shock absorber base cylinder according to claim 3, characterized in that: A spring limiting boss (7) is provided on the outside of the spring adjusting ring (6), and an adjusting block (8) with the same number as the limiting block (5) is provided below the spring limiting boss (7).

5. The high-strength adjustable shock absorber base cylinder according to claim 4, characterized in that: Each of the adjustment blocks (8) is divided into a first step block (801), a second step block (802), and a third step block (803) from left to right, with the longitudinal lengths of the first step block (801), the second step block (802), and the third step block (803) decreasing sequentially.

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