Shock absorber

Abstract

The invention relates to the technical field of shock absorption, in particular to a shock absorber which is characterized in that a base plate is provided with a groove extending in the length direction of the base plate, the first end of an elastic reed is fixed to the first side, in the length direction, of the groove, the middle of the elastic reed is provided with a protruding part, and the protruding part protrudes upwards and protrudes out of the upper side face of the base plate; the elastic reed is made of an elastic material; the shock absorber comprises a first state without acting force, in the first state, a first interval space is formed between the second end of the elastic reed and the second side of the groove, in the second state, the elastic reed is subjected to downward acting force and elastically deforms, and in the process of switching from the first state to the second state, the elastic reed is separated from the second side of the groove. The middle of the elastic reed elastically deforms downwards, and the second end of the elastic reed moves in the extending direction of the groove and is close to the second end of the groove. In this way, the problems that an existing shock absorber is prone to damage and difficult to resist lateral acting force are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorption, and in particular to a shock absorber. Background Art

[0002] A large number of components on modern cars are fixed to the vehicle's load-bearing structure, and are mainly fixed to the frame through a set connection structure. However, the vehicle will vibrate during operation, causing these components to directly impact the frame. In order to reduce the damage caused by the impact, shock-absorbing components are usually set between the components and the frame for buffering and shock absorption.

[0003] Commonly used shock-absorbing components are typically specially shaped gaskets made of materials such as rubber and nylon, which utilize their softness to absorb vibrations. However, these components are generally well-suited to longitudinal shock and vibration, but are less resistant to lateral friction and rubbing. This is especially true for the shock-absorbing pads between heavy components like battery packs and the vehicle frame. Due to their heavy weight, the shock-absorbing components are subject to significant inertia, impact, and lateral forces, making them susceptible to damage from repeated rubbing. Damaged shock-absorbing pads significantly reduce their shock-absorbing capacity. Summary of the Invention

[0004] In order to solve the problem that the existing shock absorber is easily damaged and difficult to resist lateral forces, the present invention provides a shock absorber, comprising: a substrate and an elastic spring, the substrate is a plate-like structure, wherein a groove extending along the length direction of the substrate is provided, the first end of the elastic spring is fixed to the first side of the groove along the length direction, the middle part of the elastic spring is provided with a protrusion, the protrusion is arranged to bulge upward and protrude from the upper side surface of the substrate, the middle part of the elastic spring is arranged to be able to fit into the lower side surface of the shock-absorbing component, and the elastic spring is made of elastic material; the shock absorber includes a first state where no force is applied, in the first state, a first spacing space is provided between the second end of the elastic spring and the second side of the groove, the shock absorber also includes a second state, in the second state, the elastic spring is subjected to a downward force and undergoes elastic deformation, in the process of converting from the first state to the second state, the middle part of the elastic spring elastically deforms downward, the second end of the elastic spring moves along the extension direction of the groove and approaches the second end of the groove.

[0005] In some embodiments, the shock absorber also includes a limit bar, which is fixed on the substrate. The limit bar includes two limit bars and is respectively arranged on both sides of the width direction of the elastic spring. In the first state, the height of the top surface of the limit bar is lower than the upper side surface of the raised portion.

[0006] In some embodiments, the second end of the elastic spring is provided with a first extension portion, the first extension portion can slide along the extension direction of the groove, the first extension portion is provided with a dustproof plate, the dustproof plate is fixed on the upper side of the first extension portion, the dustproof plate can cover the upper side of the opening of the groove, and the dustproof plate can move with the second end of the elastic spring.

[0007] In some embodiments, two sides of the dustproof plate are respectively attached to the limiting strips.

[0008] In some embodiments, a side of the dustproof plate away from the elastic spring is configured to be arc-shaped. As the dustproof plate extends away from the elastic spring, it gradually bends downward and is pressed against the upper side of the base plate.

[0009] In some embodiments, a protruding structure protruding upward is further provided on the substrate. The protruding structure is provided close to the side of the groove away from the elastic spring. The protruding structure extends along the width direction of the groove. The length of the protruding structure is greater than or equal to the width of the groove.

[0010] In some embodiments, in the first state, a gap exists between the protruding structure and the lower side of the dustproof plate.

[0011] In some embodiments, there is a clearance fit between the elastic spring and the limiting strip, and the clearance between the elastic spring and the limiting strip is set to be less than 0.2 mm; the longitudinal deformation range of the raised portion is set to 2.5-5 mm.

[0012] In some embodiments, the lower side of the protrusion is not higher than the upper side of the limiting strip.

[0013] In some embodiments, mounting holes are provided at both ends of the substrate; the thickness of the first extension portion is the same as the thickness of the groove, and the lower side of the first extension portion is flush with the bottom of the groove.

[0014] To solve the problem that existing shock absorbers are easily damaged and difficult to resist lateral forces, the present invention has the following advantages:

[0015] In the above technical solution, the elastic spring's elastic deformation capacity is utilized. When subjected to vertical downward pressure, the spring can elastically deform due to its shape and material properties. The raised portion can always fit the component being damped. During vibration, the spring deforms while its second end slides along the groove, guiding the deformation generated by the deformation to be fully released, thereby providing vertical damping. Compared to elastic materials such as rubber pads, due to the positive Poisson's ratio of rubber pads, when subjected to vertical forces, they will undergo a circumferential expansion-like deformation process. However, repeated deformation can easily lead to material damage over time. At the same time, for lateral forces, the spring itself is made of metal and has high strength. The groove provides space for the spring to deform and also guides its deformation direction. Even in the presence of lateral forces, the spring's deformation can be guided by its structural characteristics. Compared with traditional shock-absorbing pads such as rubber pads, its service life can be significantly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a shock absorber according to an embodiment is shown;

[0017] Figure 2 A schematic diagram of the lower structure of a shock absorber according to an embodiment is shown;

[0018] Figure 3 A schematic cross-sectional view of the shock absorber according to the first embodiment is shown;

[0019] Figure 4 A schematic cross-sectional view of the shock absorber according to the second embodiment is shown;

[0020] Figure 5 Shown Figure 4 Schematic diagram of the enlarged structure of part A in the middle.

[0021] Figure numerals: 10 - base plate; 11 - groove; 12 - raised structure; 13 - mounting hole; 20 - elastic spring; 21 - raised portion; 30 - limiting strip; 40 - dustproof plate. DETAILED DESCRIPTION

[0022] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0023] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0024] This embodiment discloses a shock absorber, such as Figure 1-5As shown, it may include: a substrate 10 and an elastic spring 20, the substrate 10 is a plate-like structure, in which a groove 11 extending along the length direction of the substrate 10 is provided, a first end of the elastic spring 20 is fixed to a first side of the groove 11 along the length direction, a ridge 21 is provided in the middle of the elastic spring 20, the ridge 21 is configured to ridge upward and protrude from the upper side of the substrate 10, the middle part of the elastic spring 20 is configured to be able to fit against the lower side of the shock-absorbing component, and the elastic spring 20 is made of elastic material; the shock absorber includes a first state in which no force is applied, in the first state, a first spacing space is provided between the second end of the elastic spring 20 and the second side of the groove 11, the shock absorber also includes a second state, in the second state, the elastic spring 20 is subjected to a downward force and undergoes elastic deformation, in the process of converting from the first state to the second state, the middle part of the elastic spring 20 elastically deforms downward, and the second end of the elastic spring 20 moves along the extension direction of the groove 11 and approaches the second end of the groove 11.

[0025] It should be noted that the above-mentioned technical solution of this application is mainly used for the shock absorption effect between the battery pack and the related load-bearing structure of new energy vehicles. The battery pack is usually provided with a load-bearing frame, which is fixedly mounted on the vehicle frame and other structures through other components. Since vibration and even collision are inevitable during the operation of the vehicle, in order to prevent direct collision between the two rigid structures, it is usually necessary to provide additional shock-absorbing pads and other structures to cushion them. Traditional shock-absorbing pads are usually made directly from flexible materials such as rubber and are used to reduce vertical vibrations. When vibration occurs, the rubber material can deform, thereby reducing the impact. However, since the vehicle does not only travel in a straight line at a constant speed, acceleration will be generated along the direction of vehicle travel during acceleration and deceleration. When turning, acceleration and force will be generated along the width of the vehicle. At this time, under the influence of acceleration or force, the battery pack will not only generate vertical force on the shock absorber or shock absorber on the lower side, but also horizontal force. With the superposition of multiple forces, the rubber shock absorber is not only compressed, but also torsion. This torsional force makes traditional rubber shock absorbers particularly susceptible to damage.

[0026] In the above technical solution, the elastic deformation ability of the elastic spring 20 is utilized. When subjected to downward pressure in the vertical direction, the elastic spring 20 can be elastically deformed by virtue of its shape characteristics and material properties. The raised portion 21 can always fit on the component to be damped. When vibration occurs, the elastic spring 20 deforms while its second end slides along the groove 11, thereby guiding the deformation generated by the deformation to be fully released, thereby providing shock absorption in the vertical direction. Compared with elastic materials such as rubber pads, due to the positive Poisson's ratio characteristics of the rubber pad, when it is subjected to a force in the vertical direction, it will be deformed in the circumferential direction. The bulging deformation process will easily cause the material itself to break due to repeated deformation as the use time increases. At the same time, for lateral forces, since the elastic spring 20 itself is made of metal material, it can have higher strength, and due to the effect of the groove 11, it provides space for the deformation of the elastic spring 20 while also guiding its deformation direction. Even if lateral force occurs, the deformation mode of the elastic spring 20 can be guided by means of structural characteristics. Compared with traditional shock-absorbing pads such as rubber pads, the deformation of the material itself is converted into structural deformation, and its service life can be significantly increased.

[0027] Among them, the substrate 10 and the elastic spring 20 can be uniformly made of spring steel by stamping, so that the substrate 10 and the elastic spring 20 form an integrated structure, thereby having good connection structural strength. Before further processing, the elastic spring 20 can have the same length as the groove 11. After the protrusion 21 is formed by processing, it undergoes longitudinal deformation, so that a first spacing space can be formed between its second end and the second side of the groove 11 in the length direction. When the elastic spring 20 is deformed, it can slide along the extension direction of the groove 11, driving the protrusion 21 to move downward, and elastically deforming from a more convex shape to a relatively flat shape. Since the second end of the elastic spring 20 is arranged in the groove 11, when a lateral force occurs, the side wall of the groove 11 can block the movement of the elastic spring 20, thereby eliminating the lateral force.

[0028] Furthermore, the shock absorption capacity can be adjusted by adjusting the thickness of the elastic spring 20, thereby adjusting the reaction force during its deformation. The groove 11 can be a downwardly concave structure provided on the base plate 10. As a simplified preferred structure, the groove 11 can be directly provided as a through-hole structure that vertically penetrates the base plate 10, which not only facilitates production but also reduces the thickness and weight of the shock absorber.

[0029] As a further embodiment, Figure 1 As shown, the shock absorber also includes a limit bar 30, which is fixedly arranged on the substrate 10. The limit bar 30 includes two limit bars 30 and is respectively arranged on both sides of the width direction of the elastic spring 20. In the first state, the height of the top surface of the limit bar 30 is lower than the upper side surface of the protrusion 21.

[0030] The limit bars 30 can further limit and guide the vertical deformation of the elastic spring 20, preventing excessive plastic deformation and a reduction in shock absorption capacity. Furthermore, they are arranged on both sides of the elastic spring 20 in the width direction, which can prevent lateral slippage and deformation of the elastic spring 20. The height of the limit bars 30 can also completely block the space below the exposed side of the elastic spring 20, preventing dirt from entering the lower side of the elastic spring 20, thereby preventing dirt from limiting the deformation of the elastic spring 20.

[0031] In addition, if Figure 1-5 As shown, the second end of the elastic spring 20 is provided with a first extension portion, which can slide along the extension direction of the groove 11. The first extension portion is provided with a dustproof plate 40, which is fixed to the upper side of the first extension portion. The dustproof plate 40 can cover the upper side of the opening of the groove 11, and the dustproof plate 40 can move with the second end of the elastic spring 20.

[0032] The setting of the first extension portion provides convenience for connection with the dustproof plate 40. Since the first extension portion is located in the groove 11, and a part of the groove 11 is exposed to the outside in order to provide sliding space, long-term use may easily cause dirt to enter and accumulate here. Therefore, a dustproof plate 40 is provided here so that the dustproof plate 40 can move with the first extension portion to avoid affecting the deformation and shock absorption function of the elastic spring 20, and at the same time cover the opening of the groove 11 to prevent dirt from entering.

[0033] In order to guide the movement of the dustproof plate 40, as Figure 1-5 As shown, both sides of the dustproof plate 40 are respectively attached to the limiting strips 30. The limiting strips 30 guide the movement of the dustproof plate 40, effectively preventing the elastic spring 20 from twisting and deforming during long-term use. Furthermore, a spacer can be added between the two limiting strips 30. A gap of the same thickness as the dustproof plate 40 can be created between the spacer and the underlying base plate 10, limiting the movement of the dustproof plate 40 to within this gap and preventing twisting and deformation.

[0034] Since the dustproof plate 40 will wear the base plate 10 during long-term use, and due to tolerance limitations, a small gap may be formed between the base plate 10 and the dustproof plate 40, which can allow dust to enter. Dirt will still accumulate in the groove 11 after long-term use. In order to prevent this situation, Figure 4-5 As shown, the side of the dustproof plate 40 away from the elastic spring 20 is set to be arc-shaped. During the process of extending in the direction away from the elastic spring 20, the dustproof plate 40 gradually bends downward and is pressed against the upper side of the base plate 10.

[0035] The dust shield 40 can be curved with a smaller curvature, that is, closer to a flat state, to avoid occupying a large amount of longitudinal space. The curved portion is bent downward. During installation, it is supported by the base plate 10 and slightly deformed upward, so that the dust shield 40 and the base plate 10 are always in contact with each other to prevent dust from entering. Specifically, the dust shield 40 can be curved throughout, or only the side away from the elastic spring 20 can be curved.

[0036] In order to further prevent dust from penetrating into the groove 11, as Figure 4-5 As shown, the base plate 10 is also provided with an upwardly protruding raised structure 12. The raised structure 12 is provided near the side of the groove 11 away from the elastic spring 20. The raised structure 12 extends along the width direction of the groove 11, and the length of the raised structure 12 is greater than or equal to the width of the groove 11. The provision of the raised structure 12 ensures that even if dust can enter the lower side of the dustproof plate 40 through the small gap between the base plate 10 and the dustproof plate 40, it will be blocked by the raised structure 12. A curved channel that first extends upward and then downward is formed between the upper side of the raised structure 12 and the lower side of the dustproof plate 40, making it very difficult for dust to enter.

[0037] Furthermore, in order to prevent the gap between the base plate 10 and the dustproof plate 40 from being worn out over a long period of use, thereby preventing dirt from entering, in the first state, there is a gap between the protruding structure 12 and the lower side of the dustproof plate 40.

[0038] When one side of the dustproof plate 40 is arc-shaped, the wear mode between it and the substrate 10 changes from face-to-face friction to surface-to-line (narrow edge) friction. As the friction intensifies, the relative height of the dustproof plate 40 away from the elastic spring 20 will gradually decrease. At this time, the gap between the raised structure 12 and the lower side of the dustproof plate 40 will gradually decrease with wear. When the sealing ability between the dustproof plate 40 and the substrate 10 decreases due to wear, the gap between the raised structure 12 and the lower side of the dustproof plate 40 will also disappear, so that the upper side of the raised structure 12 and the lower side of the dustproof plate 40 form a new fitting sealing structure to prevent dirt from entering. The above structure can avoid the use of sealing components such as sealing rings, and does not affect the use of the elastic spring 20, thereby improving product life and extending maintenance cycles.

[0039] Specifically, there is a clearance fit between the elastic spring 20 and the limiting strip 30 , and the clearance between the elastic spring 20 and the limiting strip 30 is set to be less than 0.2 mm; the longitudinal deformation range of the raised portion 21 is set to 2.5-5 mm.

[0040] To prevent dirt from entering the groove 11 through the side of the elastic spring 20, the lower side of the protrusion 21 is not higher than the upper side of the limiting strip 30. Specifically, this can be adjusted by adjusting the height of the limiting strip 30, so that the side of the protrusion 21 forms a downwardly extending baffle, thereby covering the height gap between the lower side of the protrusion 21 and the upper side of the limiting strip 30.

[0041] To facilitate fixation, as an embodiment, mounting holes 13 are provided at both ends of the substrate 10 ; the thickness of the first extension portion is the same as that of the groove 11 , and the lower side of the first extension portion is flush with the bottom of the groove 11 .

[0042] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and that in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A shock absorber, characterized in that: The shock absorber comprises: A substrate and an elastic spring, wherein the substrate is a plate-like structure and is provided with a groove extending along the length direction of the substrate, a first end of the elastic spring is fixed to a first side of the groove along the length direction, a raised portion is provided in the middle portion of the elastic spring, the raised portion is configured to bulge upward and protrude from the upper side of the substrate, the middle portion of the elastic spring is configured to be able to fit on the lower side of the shock-absorbing component, and the elastic spring is made of an elastic material; The shock absorber includes a first state in which no force is applied, in which a first spacing space is provided between the second end of the elastic spring and the second side of the groove, and a second state in which the elastic spring is subjected to a downward force and elastically deformed. During the transition from the first state to the second state, the middle portion of the elastic spring is elastically deformed downward, and the second end of the elastic spring moves along the extending direction of the groove and approaches the second end of the groove.

2. A shock absorber according to claim 1, characterized in that: The shock absorber also includes a limit bar, which is fixed on the base plate. The limit bar includes two limit bars and is respectively arranged on both sides of the elastic spring in the width direction. In the first state, the height of the top surface of the limit bar is lower than the upper side surface of the raised portion.

3. A shock absorber according to claim 2, characterized in that: The second end of the elastic spring is provided with a first extension portion, which can slide along the extension direction of the groove. The first extension portion is provided with a dustproof plate, which is fixed to the upper side of the first extension portion. The dustproof plate can cover the upper side of the opening of the groove, and the dustproof plate can move with the second end of the elastic spring.

4. A shock absorber according to claim 3, characterized in that: Both sides of the dustproof plate are respectively attached to the limiting strips.

5. A shock absorber according to claim 4, characterized in that: The side of the dustproof plate away from the elastic spring is set to be arc-shaped. In the process of extending in the direction away from the elastic spring, the dustproof plate gradually bends downward and is pressed against the upper side of the base plate.

6. A shock absorber according to claim 5, characterized in that: The substrate is also provided with an upwardly protruding structure, which is arranged close to the side of the groove away from the elastic spring, and extends along the width direction of the groove. The length of the protruding structure is greater than or equal to the width of the groove.

7. A shock absorber according to claim 6, characterized in that: In the first state, there is a gap between the protruding structure and the lower side of the dustproof plate.

8. The shock absorber according to claim 2, characterized in that: There is a clearance fit between the elastic spring and the limit strip, and the clearance between the elastic spring and the limit strip is set to be less than 0.2 mm; The longitudinal deformation range of the raised portion is set to 2.5-5 mm.

9. The shock absorber according to claim 1, characterized in that: The lower side surface of the raised portion is not higher than the upper side surface of the limiting strip.

10. The shock absorber according to claim 1, characterized in that: Mounting holes are provided at both ends of the substrate; The thickness of the first extension portion is the same as that of the groove, and the lower side of the first extension portion is flush with the bottom of the groove.

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