Buffer vibration isolator, steel plate spring suspension and vehicle

Abstract

The utility model provides a buffering vibration isolation pad, a steel plate spring suspension and a vehicle, the buffering vibration isolation pad comprises a body, the outer surface of the body is provided with a notch used for preventing the body from exceeding a target occupied space due to bulging when the body is compressed, and the notch is located at the position where the protruding amplitude of the outer surface exceeds a threshold value when the body is compressed. By means of the arrangement mode, the outer surface of the body can be prevented from protruding outwards to interfere with other structural parts (such as a plate spring fixing support), then the buffering vibration isolation cushion is prevented from being damaged, and the buffering effect and the service life of the buffering vibration isolation cushion are guaranteed.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a shock absorber, a leaf spring suspension, and a vehicle. Background Technology

[0002] With social development and improved living standards, people have increasingly higher demands for automotive comfort. The suspension system's function is to mitigate the impact generated when a car travels on uneven roads. Leaf spring suspension is a commonly used structural form in automobiles, with the leaf spring being the most important energy-absorbing element. Leaf springs are simple in structure, mature and reliable, and economical, giving them significant market value.

[0003] In related technologies, damping pads are set in different leaf springs in a leaf spring suspension to reduce the noise generated by different leaf springs during collision. However, when the damping pads in the related technologies are compressed, they will expand and cause interference between the damping pads and the leaf spring fixing brackets, which will lead to the damage of the damping pads and affect their damping effect. Utility Model Content

[0004] In view of this, this application provides a damping pad that can effectively solve the interference problem between the damping pad and the leaf spring fixing bracket. In addition, this application also provides a leaf spring suspension and a vehicle including the aforementioned damping pad.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A shock-absorbing pad, comprising:

[0007] The body has a notch on its outer surface to prevent it from expanding beyond the target space when compressed. The notch is located near the bottom of the body, close to the leaf spring.

[0008] Optionally, the outer surface of the body includes:

[0009] The two end faces are positioned opposite each other, and the outer contour of the end faces is in the shape of a "D".

[0010] The two sides are set opposite each other;

[0011] The top surface is curved.

[0012] The bottom surface is the mounting surface of the main body;

[0013] The notch is located at the intersection of the side surface and the end surface, and extends from the bottom surface to the top surface.

[0014] Optionally, a base plate is included for securing the body to the leaf spring;

[0015] Furthermore, the base plate has a bent portion, and the bent portion can be matched with the leaf spring for limiting.

[0016] Optionally, the body is provided with a buffer hole that penetrates the body.

[0017] Optionally, the body includes:

[0018] The first buffer section is located above the buffer hole in the buffer direction;

[0019] The second buffer section is located below the buffer hole in the buffering direction;

[0020] At least one of the first buffer portion and the second buffer portion is provided with an anti-impact protrusion.

[0021] Optionally, the anti-impact protrusion is disposed in the second buffer section, and the buffer hole is provided with anti-stacking clearance sections on both sides of the anti-impact protrusion.

[0022] Optionally, the first buffer section is configured as an arc shape, the anti-impact protrusion is arc-shaped and protrudes towards the first buffer section, the anti-stacking clearance section is arc-shaped, the radii of the first buffer section and the anti-impact protrusion are both greater than the radius of the anti-stacking clearance section, and the central angle of the first buffer section is greater than the central angle of the anti-impact protrusion.

[0023] Furthermore, the first buffer section, the anti-impact boss, and the anti-stacking clearance section cooperate to form the buffer hole.

[0024] A leaf spring suspension, comprising:

[0025] A first leaf spring with a leaf spring fixing bracket at its end;

[0026] The second leaf spring is fixedly connected to the first leaf spring, and there is a buffer gap between the two ends of the second leaf spring and the first leaf spring.

[0027] The buffer vibration isolation pad is the aforementioned buffer vibration isolation pad, which is fixed to the second leaf spring and located in the buffer gap.

[0028] Optionally, the distance between the buffer vibration damping pad and the first leaf spring is a, and a≤10mm.

[0029] A vehicle comprising the aforementioned shock absorber or the aforementioned leaf spring suspension.

[0030] The buffer vibration isolation pad provided in this application has a pre-set notch on the outer surface of the body for "filling". When the body is compressed under the action of impact force, the existence of the above-mentioned notch can prevent the outer surface of the body from interfering with other structural components (such as leaf spring fixing brackets), thereby preventing the buffer vibration isolation pad from being damaged and ensuring the buffering effect and service life of the buffer vibration isolation pad. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a buffer vibration isolation pad provided in an embodiment of this application.

[0033] Figure 2 for Figure 1 The right view of the buffer vibration isolation pad in the middle.

[0034] Figure 3 for Figure 1 Front view of the buffer vibration isolation pad in the middle.

[0035] Figure 4 This is a structural schematic diagram of a leaf spring suspension provided in an embodiment of this application.

[0036] exist Figures 1-4 middle:

[0037] 1-Body, 2-Base plate, 3-Bending part, 4-Bolt, 5-Buffer hole, 6-Notch, 7-First leaf spring, 8-Second leaf spring, 9-Leaf spring fixing bracket, 10-Impact-resistant boss;

[0038] 101 - First buffer section, 102 - Second buffer section, 501 - Anti-stacking and clearance section. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] like Figures 1-3As shown, the damping and vibration isolation pad in this embodiment includes a body 1, which refers to a local part of the damping and vibration isolation pad that can undergo elastic deformation under impact force. The outer surface of the body 1 is provided with a notch 6 (including but not limited to a groove structure) to prevent the body 1 from expanding beyond the target occupied space during compression. The notch 6 is located near the bottom of the leaf spring of the body 1. The aforementioned target occupied space refers to the maximum space that the body 1 can occupy during compression without interfering with other structural components (such as the leaf spring fixing bracket 9 described below).

[0041] When the aforementioned buffer and vibration damping pad is impacted, the molecular chains inside the body 1 are compressed, resulting in a reduction in the gaps between the molecular chains and a tendency for the overall volume of the body 1 to decrease. Under the action of the impact force, the body 1 will deform along the direction of the force (i.e., the body 1 is compressed in the buffer direction). At the same time, due to its internal elastic restoring force, the body 1 will expand in the direction perpendicular to the force. In this embodiment, a notch 6 is provided on the outer surface of the body 1 near the bottom of the leaf spring. During the aforementioned deformation process, the notch 6 can serve as a filling space. That is, the material in other positions of the body 1 can be added to the notch 6 during the compression process, thereby avoiding the outer surface of the body 1 from protruding and interfering with other structures when it is compressed.

[0042] In one exemplary implementation, such as Figures 1-3 As shown, the outer surface of the body 1 includes an end face, a side face, a bottom face, and a top face. There are two end faces and two side faces, and the two end faces are arranged opposite each other. As shown in the figure, the outer contour of the end face is "D" shaped, the top face is an arc surface, and the top face is the surface of the body 1 that contacts the force-applying structure. The bottom face is a plane, and the bottom face is the mounting surface of the body 1. Based on the above, the notch 6 is located at the intersection of the side face and the end face, and extends from the bottom face to the top face.

[0043] like Figures 1-3 As shown, the damping and vibration isolation pad includes a base plate 2, which is used to fix the damping and vibration isolation pad to the leaf spring. Specifically, the base plate 2 is fixedly connected to the body 1, and a bolt 4 for fixing the damping and vibration isolation pad to the leaf spring is provided on the side of the base plate 2 away from the body 1. During assembly, the bolt 4 is passed through the bolt hole at the corresponding position on the leaf spring, and the nut is tightened to fix the damping and vibration isolation pad to the leaf spring.

[0044] In one exemplary implementation, such as Figures 1-3As shown, the base plate 2 has two opposing surfaces (i.e., the surface with the largest area in the base plate 2). One surface is fixedly connected to the body 1, and the other surface has a protruding bolt 4, with the bolt 4 extending perpendicularly to the surface of the base plate 2. The bolt 4 can be fixed to the base plate 2 by riveting, welding, or threading. This application does not specifically limit this method, and adaptive designs can be made as needed during implementation. In a preferred embodiment, the bolt 4 and the base plate 2 are riveted together. In specific implementation, this connection method only requires that the lower end face of the nut of the bolt 4 be flush with the plane of the base plate 2. The process is simple, the cost is low, and the riveting force is relatively easy to control, preventing rotation.

[0045] Regarding the method of fixing the base plate 2 to the body 1, in one exemplary embodiment, the base plate 2 is made of metal, specifically Q235 steel, Q345 steel, 20# steel, 45# steel, or DC01 steel, etc., and the body 1 is made of rubber. The body 1 and the base plate 2 are bonded together by vulcanization. Of course, in some other embodiments, the base plate 2 and the body 1 can also be fixedly connected by adhesive bonding or other methods.

[0046] In a further embodiment, the base plate 2 has a bent portion 3, which can engage with the leaf spring for limiting. The bent portion 3 refers to the portion of the base plate 2 that forms an angle with the plate surface of the base plate 2; this bent portion 3 can be integrally formed with the base plate 2 (see details...). Figures 1-3 That is, the bent portion 3 is formed by bending a part of the base plate 2; or, the bent portion 3 can also be fixed to the base plate 2 by welding or other fixing methods. In specific implementation, the formation method of the bent portion 3 can be adapted to the needs. Under the above configuration, the bent portion 3 can serve as a positioning structure when the buffer vibration isolation pad is assembled with the leaf spring, thus facilitating the installation of the buffer vibration isolation pad and improving assembly efficiency; on the other hand, the bent portion 3 can serve as a limiting structure to prevent the installation of the buffer vibration isolation pad from loosening due to rotation caused by force, and at the same time, avoid interference with the leaf spring fixing bracket 9 after the buffer vibration isolation pad rotates, thereby ensuring the service life of the buffer vibration isolation pad.

[0047] In a further embodiment, such as Figure 4As shown, the bent portion 3 abuts against the side of the leaf spring to achieve a limiting fit between the bent portion 3 and the leaf spring. The side of the leaf spring refers to the surface of the leaf spring other than the plate surface (i.e., the surface with the largest area on the outer surface of the leaf spring). With this configuration, the limiting fit between the bent portion 3 and the leaf spring can be achieved without processing the leaf spring, thus simplifying the process and improving production efficiency. At the same time, it avoids damage to the leaf spring structure, thereby ensuring the structural strength of the leaf spring itself. Of course, when the impact of processing the leaf spring is not a concern, in some other embodiments, a hole can be made in the leaf spring, and the bent portion 3 can be inserted into the hole to achieve the limiting fit between the bent portion 3 and the leaf spring.

[0048] In some embodiments, the body 1 is provided with a buffer hole 5, which penetrates the body 1, meaning that the body 1 in this embodiment has a hollow structure. With this configuration, after the buffer damping pad is impacted, the buffer hole 5 deforms, thereby reducing the impact force and increasing the smoothness of the impact. Furthermore, the extending direction of the buffer hole 5 is perpendicular to the buffering direction, which can be specifically referred to... Figure 1 In the X direction; under this setting, when the buffer hole 5 deforms, the deformation at different positions is more uniform, which is more conducive to improving the buffering effect.

[0049] The number and shape of the buffer holes 5 can be adapted to meet specific needs, and this application does not impose any particular limitation on them. For example, the buffer holes 5 can be elliptical holes, circular holes, or arc-shaped holes, etc., and the number of buffer holes 5 can be 1, 2, or 3, etc.

[0050] In a further embodiment, such as Figures 1-3 As shown, the body 1 includes a first buffer portion 101 and a second buffer portion 102. In the buffering direction, the first buffer portion 101 is located above the buffer hole 5, and the second buffer portion 102 is located below the buffer hole 5. At least one of the first buffer portion 101 and the second buffer portion 102 is provided with an anti-impact boss 10. By providing the anti-impact boss 10, the comfort and smoothness of impact response can be further improved.

[0051] Furthermore, in some embodiments, the anti-impact protrusion 10 is disposed on the second buffer section 102, and the buffer hole 5 is provided with anti-stacking clearance sections 501 on both sides of the anti-impact protrusion 10. During the impact process, the material at the anti-impact protrusion 10 and other positions can move towards the anti-stacking clearance sections 501, thereby enabling the anti-impact protrusion 10 to achieve the preset anti-impact effect, while avoiding the impact on the service life of the buffer vibration isolation pad due to local material accumulation.

[0052] To facilitate understanding of the arrangement of the buffer hole 5, the first buffer section 101, the second buffer section 102, the anti-impact boss 10, and the anti-stacking clearance section 501 in the above embodiments, the following will be combined with... Figures 1-3 Taking the example of having only one buffer hole 5, the above structure will be illustrated by way of example.

[0053] Specifically, such as Figures 1-3 As shown, the first buffer section 101 is arc-shaped, the anti-impact boss 10 is arc-shaped and protrudes towards the first buffer section 101, and the anti-stacking clearance section 501 is arc-shaped. The radii of the first buffer section 101 and the anti-impact boss 10 are both greater than the radius of the anti-stacking clearance section 501, and the central angle of the first buffer section 101 is greater than the central angle of the anti-impact boss 10. Furthermore, the first buffer section 101, the anti-impact boss 10, and the anti-stacking clearance section 501 cooperate to form the buffer hole 5.

[0054] When the aforementioned buffer vibration isolation pad is subjected to impact, the first buffer section 101 is initially subjected to force and moves towards the second buffer section 102. During this process, the size of the buffer hole 5 in the buffering direction gradually decreases, and the reaction force of the first buffer section 101 on the force-applying structure (such as the first leaf spring 7 mentioned below) gradually increases. As the first buffer section 101 moves as described above, it contacts the anti-impact boss 10 and compresses it. During this process, the material on the anti-impact boss 10 is squeezed into the anti-stacking clearance section 501, thereby increasing the buffer stroke of the anti-impact boss 10 and improving the buffering effect. As can be seen from the above buffering process, in this embodiment, the reaction force of the buffer vibration isolation pad on the force-applying structure is a gradually increasing process. In this way, abrupt changes in stiffness can be avoided, thereby effectively reducing the impact force and improving the smoothness of the impact.

[0055] Furthermore, this application provides a leaf spring suspension, which includes a first leaf spring 7, a second leaf spring 8, and a damping pad. The first leaf spring 7 and the second leaf spring 8 are fixedly connected, and a buffer gap is provided between the two ends of the second leaf spring 8 and the first leaf spring 7. Specifically, as shown... Figure 4 As shown, the first leaf spring 7 and the second leaf spring 8 are fixedly connected by a threaded structure, and the end of the first leaf spring 7 is provided with a leaf spring fixing bracket 9, which is fixed to the vehicle body by a threaded structure or welding; there is a buffer gap between the two ends of the first leaf spring 7 and the first leaf spring 8. In specific implementation, the buffer gap can be achieved by setting the first leaf spring 7 and the second leaf spring 8 to have different curvatures. The buffer vibration damping pad is fixed on the second leaf spring 8 and located in the buffer gap.

[0056] It should be noted that, since the leaf spring suspension in this embodiment includes the aforementioned damping and vibration isolation pads, the beneficial effects of the leaf spring suspension brought by the damping and vibration isolation pads are detailed above and will not be repeated here.

[0057] Furthermore, in some embodiments, the distance between the damping pad and the first leaf spring 7 is 'a', and 'a' ≤ 10 mm. That is, in the non-deformed state of the first leaf spring 7, the distance between the damping pad and the first leaf spring 7 is less than or equal to 10 mm. For example, the distance between the damping pad and the first leaf spring 7 can be 0 mm, 4 mm, or 10 mm, etc. In this way, the impact of the first leaf spring 7 on the damping pad is relatively weak at the moment of contact, thereby effectively improving the smoothness.

[0058] In addition, this application provides a vehicle that includes the aforementioned shock absorber or leaf spring suspension. It should be noted that since the vehicle includes the aforementioned shock absorber or leaf spring suspension, the beneficial effects of the shock absorber or leaf spring suspension are detailed above and will not be repeated here.

[0059] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0060] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0061] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0062] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0063] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0064] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A cushioning vibration isolation mat, characterized in that, include: The body has a notch on its outer surface to prevent it from expanding beyond the target space when compressed. The notch is located near the bottom of the body, close to the leaf spring.

2. The cushioning vibration isolation mat of claim 1, wherein, The outer surface of the body includes: The two end faces are positioned opposite each other, and the outer contour of the end faces is in the shape of a "D". The two sides are set opposite each other; The top surface is curved. The bottom surface is the mounting surface of the main body; The notch is located at the intersection of the side surface and the end surface, and extends from the bottom surface to the top surface.

3. The cushioning vibration isolation mat of claim 1, wherein, Includes a base plate for fixing the body to the leaf spring; Furthermore, the base plate has a bent portion, and the bent portion can be matched with the leaf spring for limiting.

4. The cushioning vibration isolation mat of claim 1, wherein, The main body is provided with a buffer hole that penetrates the main body.

5. The cushioning vibration isolation mat of claim 4, wherein, The body includes: The first buffer section is located above the buffer hole in the buffer direction; The second buffer section is located below the buffer hole in the buffering direction; At least one of the first buffer portion and the second buffer portion is provided with an anti-impact protrusion.

6. The buffer vibration isolation mat according to claim 5, characterized in that The anti-impact protrusion is disposed on the second buffer section, and the buffer hole is provided with anti-stacking clearance sections on both sides of the anti-impact protrusion.

7. The buffer vibration damping pad according to claim 6, characterized in that, The first buffer section is configured as an arc shape, the anti-impact protrusion is arc-shaped and protrudes towards the first buffer section, the anti-stacking clearance section is arc-shaped, the radii of the first buffer section and the anti-impact protrusion are both greater than the radius of the anti-stacking clearance section, and the central angle of the first buffer section is greater than the central angle of the anti-impact protrusion. Furthermore, the first buffer section, the anti-impact boss, and the anti-stacking clearance section cooperate to form the buffer hole.

8. A leaf spring suspension characterized in that include: A first leaf spring with a leaf spring fixing bracket at its end; The second leaf spring is fixedly connected to the first leaf spring, and there is a buffer gap between the two ends of the second leaf spring and the first leaf spring. The damping and vibration isolation pad is the damping and vibration isolation pad as described in any one of claims 1-7, wherein the damping and vibration isolation pad is fixed on the second leaf spring and located in the damping gap.

9. The leaf spring suspension of claim 8 wherein, The distance between the buffer vibration isolation pad and the first leaf spring is a, and a≤10mm.

10. A vehicle characterized by comprising: Includes the damping and vibration isolation pad as described in any one of claims 1-7 or the leaf spring suspension as described in claim 8 or 9.

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