A clamp and leaf spring assembly

Abstract

The application discloses a structure schematic diagram of a clamp and a leaf spring assembly, the clamp is arranged on at least two adjacent steel plate spring leaves, and comprises a connecting body, the connecting body is arranged to be connected to a steel plate spring leaf, and a clamping groove is arranged on the connecting body relative to another adjacent steel plate spring leaf, and the opening end of the clamping groove gradually decreases along the direction close to the another adjacent steel plate spring leaf, and the connecting body is used for connecting the another adjacent steel plate spring leaf, and the cross section of the connecting body comprises a first steel plate layer, a first rubber layer and a second steel plate layer which are sequentially arranged from inside to outside and are connected to each other. The application can effectively solve the problem that when the impact force of the road is transmitted to the wheels, the transverse movement and the longitudinal movement exist between the multiple steel plates, and thus the friction noise is generated.

Description

Technical Field

[0001] This invention relates to the field of leaf spring technology, specifically to a clamp and leaf spring assembly. Background Technology

[0002] Leaf springs are an important component of vehicle suspension systems. They play a role in bearing the weight of the vehicle body, transmitting forces and torques in all directions, and damping vehicle vibrations. They have a very important impact on the ride comfort and handling stability of the entire vehicle.

[0003] For example, Chinese utility model patent with publication number CN204186856U, entitled "A Leaf Spring," describes a leaf spring comprising multiple leaf spring plates of equal thickness. The top leaf spring plate has rolled ears on both sides, and its thickness increases as it transitions to the rolled ears. Furthermore, wedge-shaped pads are added to the joints of the leaf spring plates. A top wedge-shaped pad is added to the top surface of the top leaf spring plate, and a bottom wedge-shaped pad is added to the bottom surface of the bottom leaf spring plate. The top and bottom wedge-shaped pads are installed in opposite directions. This device, by thickening the rolled ear portion, improves the overall reliability of the multi-leaf leaf spring, increases the utilization rate of the leaf spring material, and reduces costs. Adding wedge-shaped pads also makes the leaf spring support more versatile.

[0004] However, when a car travels on the road and the impact force is transmitted to the wheels, there will be lateral and longitudinal movement between the multiple steel plates. During the movement, friction noise will be generated due to mutual collision. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a clamp and leaf spring assembly to solve the technical problem in the prior art where the impact force from the road surface to the wheel causes lateral and longitudinal movement between multiple steel plates, resulting in frictional noise.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a clamp configured to connect at least two adjacent leaf springs, comprising: A connector is configured to be connected to one of the leaf spring sheets and to have a snap-fit ​​groove relative to another adjacent leaf spring sheet, wherein the opening end of the snap-fit ​​groove gradually decreases in the direction close to the other adjacent leaf spring sheet, for connecting the other adjacent leaf spring sheet. The connector includes a first steel plate layer, a first rubber layer, and a second steel plate layer that are arranged sequentially from the inside out and interconnected with each other.

[0007] In some embodiments, the connector is detachably connected to one of the leaf spring plates.

[0008] In some embodiments, a steel leaf spring sheet has at least one first mounting hole, and the bottom inner wall of the snap-fit ​​groove has a second mounting hole that penetrates the connector body relative to the first mounting hole. The clamp also includes at least one connector, which has a large diameter section and a small diameter section. The small diameter section of the connector passes through the second mounting hole and is connected to the inner wall of the first mounting hole, and the large diameter section of the connector abuts against the bottom inner wall of the snap-fit ​​groove.

[0009] In some embodiments, the second mounting hole has a large diameter section and a small diameter section, the large diameter section of the second mounting hole is disposed away from the first mounting hole relative to its small diameter section, and the large diameter section of the connector abuts against the bottom inner wall of the large diameter section of the second mounting hole.

[0010] In some embodiments, the circumferential inner wall of the first mounting hole is formed with an internal thread, the circumferential inner wall of the minor diameter section of the second mounting hole is formed with an internal thread, the circumferential outer wall of the minor diameter section of the connector is formed with an external thread, and the minor diameter section of the connector is threadedly connected to the minor diameter section of the first mounting hole and the second mounting hole.

[0011] In some embodiments, the clamp further includes a second rubber layer disposed between the first steel plate layer and an adjacent other steel plate spring sheet, and connected to the first steel plate layer.

[0012] In some embodiments, the second rubber layer has at least one receiving groove relative to the adjacent other leaf spring sheet, and the clamp further includes at least one abutment body, the abutment body being a lubricated structure, the abutment body being engaged in the receiving groove and capable of abutting against the adjacent other leaf spring sheet.

[0013] In some embodiments, the number of receiving grooves on the second rubber layer is multiple, and the multiple receiving grooves are evenly distributed along the surface of the second rubber layer.

[0014] In some embodiments, the cross-section of the connector is U-shaped or H-shaped.

[0015] Secondly, the present invention also provides a leaf spring assembly, characterized in that it includes at least two leaf spring plates and at least one clamp as described in any of the above.

[0016] Compared with the prior art, the beneficial effects of the clamp and leaf spring assembly provided by the present invention include: the connecting body is disposed between two adjacent leaf spring plates, the connecting body is connected to one leaf spring plate, and a snap-fit ​​groove is opened relative to the other adjacent leaf spring plate, and the opening end of the snap-fit ​​groove gradually decreases along the direction close to the other adjacent leaf spring plate, for connecting the other adjacent leaf spring plate, wherein the connecting body includes a first steel plate layer, a first rubber layer and a second steel plate layer arranged sequentially from the inside to the outside and connected to each other. Compared to existing technologies, by setting a connector between two adjacent leaf springs, one end of the connector is connected to one leaf spring, and the other end of the connector is engaged with another adjacent leaf spring through a locking groove, so that at least two leaf springs form a whole. This avoids lateral and longitudinal movement between multiple leaf springs, thereby reducing the impact and noise caused by the impact force transmitted from the wheel. The connector includes a first steel plate layer, a first rubber layer, and a second steel plate layer arranged sequentially from the inside out and connected to each other. It has high strength and high connection stability, and can solve the technical problem in existing technologies where lateral and longitudinal movement between multiple leaf springs occurs when the impact force from the road surface is transmitted to the wheel, resulting in friction noise. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a clamp provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a clamp provided in one embodiment of the present invention from another perspective; Figure 3 This is a schematic diagram of a clamp and leaf spring assembly provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a clamp and leaf spring assembly provided in another embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 100 steel leaf spring; 200 connecting body; 210 first steel plate layer; 220 first rubber layer; 230 second steel plate layer; 300 connecting piece; 400 second rubber layer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] To address the technical problem of frictional noise caused by lateral and longitudinal movement between multiple steel plates when impacted by the road surface, this invention provides a clamp and leaf spring assembly. This assembly achieves this by setting a connector 200 between two adjacent leaf spring plates 100. One end of the connector 200 is connected to one leaf spring plate 100, and the other end of the connector 200 is engaged with another adjacent leaf spring plate 100 via a locking groove. This allows at least two leaf spring plates 100 to form a single unit, preventing lateral and longitudinal movement between the multiple steel plates and reducing impact and noise caused by the wheel's impact force. The connector 200 comprises a first steel plate layer 210, a first rubber layer 220, and a second steel plate layer 230 arranged sequentially from the inside out and interconnected, exhibiting high strength and high connection stability.

[0021] Please see Figure 1 , Figure 2 , Figure 1 , Figure 2 This is a schematic diagram of a clamp and leaf spring assembly according to an embodiment of the present invention. The clamp is configured to connect at least two adjacent leaf spring plates 100 and includes: a connecting body 200. The connecting body 200 is configured to connect to one leaf spring plate 100 and has a snap-fit ​​groove opened relative to the other adjacent leaf spring plate 100. The opening end of the snap-fit ​​groove gradually decreases along the direction close to the other adjacent leaf spring plate 100, and is used to connect the other adjacent leaf spring plate 100. The connecting body 200 includes a first steel plate layer 210, a first rubber layer 220 and a second steel plate layer 230 arranged sequentially from the inside to the outside and connected to each other.

[0022] In this device, compared with the prior art, a connector 200 is provided between two adjacent leaf spring plates 100. One end of the connector 200 is connected to one leaf spring plate 100, and the other end of the connector 200 is engaged with another adjacent leaf spring plate 100 through a locking groove. This makes at least two leaf spring plates 100 form a whole, avoiding lateral and longitudinal movement between multiple steel plates, thereby reducing the impact and noise caused by the impact force transmitted from the wheel. The connector 200 includes a first steel plate layer 210, a first rubber layer 220, and a second steel plate layer 230 arranged sequentially from the inside out and connected to each other. It has high strength and high connection stability, and can solve the technical problem in the prior art where lateral and longitudinal movement between multiple steel plates occurs when the impact force from the road surface is transmitted to the wheel, resulting in friction noise.

[0023] Furthermore, the first steel plate layer 210, the first rubber layer 220 and the second steel plate layer 230 are interconnected to form a whole, increasing the strength and stability of the connector 200. Here, the first steel plate layer 210, the first rubber layer 220 and the second steel plate layer 230 are all common and readily available materials on the market, which are conventional settings known to those skilled in the art, and will not be described in detail here.

[0024] In this embodiment, as Figures 1 to 3 As shown, the connecting body 200 is detachably connected to a steel leaf spring 100.

[0025] The detachable connection between the connector 200 and the leaf spring 100 facilitates their installation and replacement.

[0026] In one embodiment, such as Figure 1 As shown, the steel leaf spring 100 has at least one first mounting hole, and the bottom inner wall of the snap-fit ​​groove has a second mounting hole that penetrates the connector 200 opposite to the first mounting hole. The clamp also includes at least one connector 300, which has a large diameter section and a small diameter section. The small diameter section of the connector 300 passes through the second mounting hole and is connected to the inner wall of the first mounting hole, and the large diameter section of the connector 300 abuts against the bottom inner wall of the snap-fit ​​groove.

[0027] The detachable connection between the connector 200 and a steel leaf spring 100 is achieved by using the small diameter section of the connector 300 passing through the detachable connection between the second mounting hole and the first mounting hole, and by the large diameter section of the connector 300 abutting against the bottom inner wall of the snap-fit ​​groove.

[0028] Furthermore, in this application, the diameters of the first mounting hole, the second mounting hole, and the small-diameter section of the connector 200 are matched.

[0029] In one embodiment, such as Figure 1 As shown, the second mounting hole has a large diameter section and a small diameter section. The large diameter section of the second mounting hole is disposed away from the first mounting hole relative to its small diameter section. The large diameter section of the connector 300 abuts against the bottom inner wall of the large diameter section of the second mounting hole.

[0030] The large-diameter section of the connector 300 is engaged with the bottom inner wall of the large-diameter section of the second mounting hole to achieve a snap-fit ​​connection.

[0031] Furthermore, by sliding along the axis of the second mounting hole, the small diameter section of the connector 300 passes through the small diameter section of the second mounting hole, thereby achieving a snap-fit ​​with the first mounting hole. At this time, the large diameter section of the connector 300 abuts against the bottom inner wall of the second mounting hole.

[0032] In one embodiment, the circumferential inner wall of the first mounting hole is formed with an internal thread, the circumferential inner wall of the minor diameter section of the second mounting hole is formed with an internal thread, the circumferential outer wall of the minor diameter section of the connector 300 is formed with an external thread, and the minor diameter section of the connector 300 is threadedly connected to the minor diameter section of the first mounting hole and the second mounting hole.

[0033] The threaded connection enables a detachable connection, which is not only easy to disassemble but also provides a stable connection.

[0034] In some embodiments, the small-diameter section of the connector 300 is elastically engaged with the inner wall of the first mounting hole through an elastic structure, which will not be described in detail here.

[0035] In this embodiment, as Figure 2 As shown, the clamp also includes a second rubber layer 400, which is disposed between the first steel plate layer 210 and the adjacent other steel plate spring sheet 100, and connected to the first steel plate layer 210.

[0036] By providing a second rubber layer 400 between the first steel plate layer 210 and the adjacent steel plate spring sheet 100, the impact force between the two can be absorbed or buffered, further reducing noise.

[0037] Furthermore, the second rubber layer 400 here is a common and readily available material on the market, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0038] In some embodiments, the second rubber layer 400 and the adjacent steel leaf spring sheet 100 are also provided with annular gaskets, which will not be described in detail here.

[0039] In this embodiment, as Figure 1 , Figure 2 As shown, the second rubber layer 400 has at least one receiving groove relative to the adjacent other steel leaf spring 100. The clamp also includes at least one abutment body, which is a lubricating structure. The abutment body is engaged in the receiving groove and can abut against the adjacent other steel leaf spring 100.

[0040] By setting an abutment body connected to the first rubber layer 220 and abutting against the adjacent steel leaf spring 100, the abutment body plays a lubricating role for the adjacent steel leaf spring 100, thereby reducing collisions and impacts and further reducing noise generation.

[0041] Furthermore, the contact body here is a graphite cylindrical rod.

[0042] In some embodiments, the second rubber layer 400 has a plurality of receiving grooves, which are evenly distributed along the surface of the second rubber layer 400.

[0043] To improve the noise reduction effect, multiple abutments are evenly distributed on the surface of the second rubber layer 400.

[0044] In this embodiment, the cross-section of the connector 200 is U-shaped or H-shaped.

[0045] like Figure 3 , Figure 4 As shown, by setting the shape of the connector 200 to U-shape or H-shape, it is possible to connect another steel leaf spring 100 located on one or both sides.

[0046] Furthermore, by setting the shape of the connector 200 to H-shape, the volume of the leaf spring 100 assembly can be reduced.

[0047] The present invention also provides a leaf spring assembly, comprising at least two leaf spring plates 100 and at least one clamp.

[0048] By setting clamps, a stable connection can be achieved between multiple steel leaf spring plates 100.

[0049] To better understand this invention, the following is combined with... Figures 1 to 4 The technical solution of the present invention will be described in detail below: The connector 200 is disposed between two adjacent leaf spring plates 100. The connector 200 is connected to one leaf spring plate 100 and has a snap-fit ​​groove relative to the other adjacent leaf spring plate 100. The opening end of the snap-fit ​​groove gradually decreases in the direction close to the other adjacent leaf spring plate 100, and is used to connect the other adjacent leaf spring plate 100. The connector 200 includes a first steel plate layer 210, a first rubber layer 220 and a second steel plate layer 230 arranged sequentially from the inside to the outside and connected to each other. Compared to existing technologies, by setting a connector 200 between two adjacent leaf spring plates 100, one end of the connector 200 is connected to one leaf spring plate 100, and the other end of the connector 200 is engaged with another adjacent leaf spring plate 100 through a locking groove, so that at least two leaf spring plates 100 form a whole, avoiding lateral and longitudinal movement between multiple steel plates, thereby reducing the impact and noise caused by the impact force transmitted from the wheel. The connector 200 includes a first steel plate layer 210, a first rubber layer 220 and a second steel plate layer 230 arranged sequentially from the inside out and connected to each other, and has high strength and high connection stability.

[0050] Furthermore, the U-shaped connector 200 in this device has a second rubber layer 400 on its inner surface. The connector 200 has two bolt holes for fixed connection with the steel plate. The holes in the rubber layer have a large diameter to accommodate the bolt nuts.

[0051] The second rubber layer 400 has grooves on its surface and contains graphite, which serves as friction lubrication and prevents abnormal noise. The inner side of the connector 200 consists of a first steel plate layer 210, a first rubber layer 220, and a second steel plate layer 230. The steel plate layer can serve as a structural reinforcement. When the rubber layer is thick, it can prevent fatigue caused by long-term large-scale deformation and extend its service life.

[0052] Furthermore, the connecting body 200 can also be designed in an H shape, with approximately symmetrical sides, according to the vehicle model and the design requirements of the leaf spring. It is fixed on the steel plate located in the middle, which simultaneously plays the role of fixing the lateral displacement of the steel plates on both sides of the middle steel plate, as well as the role of shock absorption and noise reduction.

[0053] This application, through the aforementioned structure, can solve the technical problem in the prior art where, when the impact force from the road surface is transmitted to the wheel, multiple steel plates will experience lateral and longitudinal movement, resulting in frictional noise.

[0054] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A clamp, configured to connect at least two adjacent leaf springs, characterized in that, include: A connector is configured to be connected to one of the steel leaf spring sheets and to have a snap-fit ​​groove relative to another adjacent steel leaf spring sheet. The opening end of the snap-fit ​​groove gradually decreases in the direction close to the other adjacent steel leaf spring sheet, and is used to connect the other adjacent steel leaf spring sheet. The cross-section of the connector includes a first steel plate layer, a first rubber layer and a second steel plate layer arranged sequentially from the inside to the outside and connected to each other. The steel plate spring sheet is provided with at least one first mounting hole, and the bottom inner wall of the snap-fit ​​groove is provided with a second mounting hole that penetrates the connector body relative to the first mounting hole. The clamp also includes at least one connector, which has a large diameter section and a small diameter section. The small diameter section of the connector passes through the second mounting hole and is connected to the inner wall of the first mounting hole, and the large diameter section of the connector abuts against the bottom inner wall of the snap-fit ​​groove. The second mounting hole has a large diameter section and a small diameter section. The large diameter section of the second mounting hole is located away from the first mounting hole relative to its small diameter section. The large diameter section of the connector abuts against the bottom inner wall of the large diameter section of the second mounting hole. Wherein, the inner circumferential wall of the first mounting hole is formed with an internal thread, the inner circumferential wall of the small diameter section of the second mounting hole is formed with an internal thread, the outer circumferential wall of the small diameter section of the connector is formed with an external thread, and the small diameter section of the connector is threadedly connected to the small diameter section of the first mounting hole and the second mounting hole. The clamp further includes a second rubber layer, which is disposed between the first steel plate layer and another adjacent steel plate spring sheet, and connected to the first steel plate layer; The second rubber layer has at least one receiving groove relative to the adjacent steel plate spring sheet, and the clamp also includes at least one abutment body. The abutment body is a lubricating structure, and the abutment body is engaged in the receiving groove and can abut against the adjacent steel plate spring sheet.

2. The clamp according to claim 1, characterized in that, The connector is detachably connected to one of the steel leaf springs.

3. The clamp according to claim 1, characterized in that, The second rubber layer has multiple receiving grooves, which are evenly distributed along the surface of the second rubber layer.

4. The clamp according to claim 1, characterized in that, The cross-section of the connector is U-shaped or H-shaped.

5. A leaf spring assembly, characterized in that, It includes at least two leaf springs and at least one clamp as described in any one of claims 1-4.

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