Hydraulic-damping limiting block, suspension, and vehicle

Abstract

A hydraulic-damping limiting block, comprising: a limiting block body (1), mounting channels (11) being formed in the limiting block body (1), injection ports (12) and liquid filling chambers (13) being formed in the limiting block body (1), the injection ports (12) being communicated with the corresponding liquid filling chambers (13), and the limiting block body (1) being made of an elastic material; and sealing covers (2), the sealing covers (2) being mounted at the corresponding injection ports (12), so that the liquid filling chambers (13) are isolated from the outside. By adjusting the injection amount of liquid in the limiting block body, when the liquid flows into the bottoms of the liquid filling chambers; since the limiting block body is made of an elastic material, under the action of the weight of the liquid, the liquid pushes the limiting block body to deform, and the degree of deformation of the limiting block body is directly proportional to the liquid injection amount, so that both the static stiffness and the length of the limiting block body can be adjusted; and the requirements of different vehicle models for the limiting block body are met by changing the liquid injection amount in the liquid filling chambers, thereby achieving the purpose of universalization. The present invention further relates to a suspension and a vehicle.

Description

Liquid resistance limit block, suspension and vehicle Technical Field

[0001] The present invention relates to the field of automobile accessories, and in particular to a hydraulic resistance limit block, a suspension and a vehicle. Background Art

[0002] Suspension stops determine the suspension's travel, preventing tire interference with wheel arches while also protecting other elastic components from damage (preventing spring coilovers and shock absorbers from bottoming out). Suspension stops have a certain impact on ride comfort and handling stability. Different vehicle models require different suspension stop stiffness and clearance requirements.

[0003] In the related art, the static stiffness and length of the limit block in the suspension are not adjustable, and the limit block cannot be universally used when facing different car models.

[0004] Summary of the Invention

[0005] Embodiments of the present invention provide a hydraulic limit block, a suspension, and a vehicle to solve the problem in the related art that the static stiffness and length of the limit block in the suspension are not adjustable, and the limit block cannot be universally used when facing different vehicle models.

[0006] In a first aspect, a liquid resistance limit block is provided, comprising:

[0007] A limit block body, wherein the limit block body is provided with a mounting channel, an injection port and a liquid filling chamber, the injection port is communicated with the liquid filling chamber, and the limit block body is made of an elastic material;

[0008] A sealing cover is installed on the injection port to seal the liquid filling chamber from the outside.

[0009] In some embodiments, the liquid-filled chamber comprises:

[0010] A first cavity and a second cavity, wherein the first cavity and the second cavity are spaced apart along the length direction of the limiting block body;

[0011] The second flow channel is connected to the first cavity and the second cavity, and the inner diameter of the second flow channel is smaller than the inner diameter of the second cavity.

[0012] In some embodiments, along the spacing direction between the first cavity and the second cavity, the inner diameter of the second flow channel gradually decreases.

[0013] In some embodiments, the limit block body is provided with a plurality of liquid-filled chambers along its length direction, and any two adjacent liquid-filled chambers are connected through a third flow channel.

[0014] In some embodiments, in any two adjacent liquid-filled chambers, an included angle at the intersection of an extension line of the second flow channel and an extension line of the third flow channel is set to be an obtuse angle.

[0015] In some embodiments, along the spacing direction between the first cavity and the second cavity, the inner diameter of the third flow channel gradually decreases.

[0016] In some embodiments, the cross-section of the first cavity is racetrack-shaped, and the cross-section of the second cavity is circular.

[0017] In some embodiments, the limit block body is provided with a concave portion and a convex portion in sequence along its length direction;

[0018] The first cavity is opened in the recessed portion, and the second cavity is opened in the raised portion.

[0019] In some embodiments, one end portion of the limit block body is provided with a first annular extension portion and a second annular extension portion, and the second annular extension portion is located inside the first annular extension portion;

[0020] The injection port is formed between the first annular extension portion and the second annular extension portion;

[0021] A first flow channel is formed on the inner bottom wall of the injection port, and the first flow channel is connected to the liquid filling chamber;

[0022] The sealing cover covers the injection port and is fixedly engaged with one end portion of the limiting block body.

[0023] In some embodiments, a first annular limiting groove is formed on the inner side of the first annular extension portion;

[0024] The side wall of the sealing cover is provided with a first annular limiting portion, and the sealing cover is inserted into the first annular limiting groove through the first annular limiting portion to be fixed to the inner side of the first annular extending portion.

[0025] In some embodiments, the second annular extension portion is provided with a second annular limiting portion;

[0026] The sealing cover is provided with a second annular limiting groove;

[0027] The sealing cover is inserted into the second annular limiting portion through the second annular limiting groove to be fixed to the second annular extending portion.

[0028] In some embodiments, a first outer flange is provided at one end of the limit block body.

[0029] In a second aspect, a suspension is provided, comprising:

[0030] A limit block body, wherein the limit block body is provided with a mounting channel, an injection port and a liquid filling chamber, the injection port is communicated with the liquid filling chamber, and the limit block body is made of an elastic material;

[0031] a sealing cover, the sealing cover being mounted on the injection port to seal the liquid filling chamber from the outside;

[0032] One end of the limit block body is provided with a first outer flange;

[0033] Also includes bearings and shock absorbers;

[0034] One end of the bearing is provided with an inner flange, and the inner side of the bearing is provided with a support member;

[0035] One end of the limiting block body is fixed between the support member and the inner flange via the first outer flange;

[0036] The limiting block body is installed on the outer wall of the piston rod of the shock absorber through the bearing and the support member.

[0037] In some embodiments, the inner flange is provided with a second outer flange, and the second outer flange is in contact with the side wall of the limit block body;

[0038] The cross section of the second outer turning edge is in a truncated cone shape, and the wider end of the second outer turning edge is fixed to the inner turning edge, and the narrower end of the second outer turning edge is provided with a third outer turning edge.

[0039] In a third aspect, a vehicle is provided, comprising the suspension according to some embodiments described above.

[0040] The beneficial effects brought about by the technical solution provided by the present invention include: by adjusting the injection amount of liquid in the limit block body, the liquid flows into the bottom of the liquid filling chamber. Since the limit block body is made of elastic material, under the action of the weight of the liquid, the liquid will pull the limit block body to deform, and the degree of deformation is proportional to the injection amount, so that the static stiffness and length of the limit block body can be adjusted. By changing the injection amount in the liquid filling chamber, the requirements of different vehicle models for the limit block body can be adapted to achieve the purpose of universalization. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] FIG1 is a schematic diagram of the internal structure of a liquid resistance limit block provided in an embodiment of the present invention;

[0043] FIG2 is an exploded perspective structural diagram of a suspension provided by an embodiment of the present invention.

[0044] In the figure: 1. Limit block body; 11. Mounting channel; 12. Inlet; 121. First flow channel; 13. Liquid filling chamber; 131. First cavity; 132. Second cavity; 133. Second flow channel; 14. Third flow channel; 15. Recessed portion; 16. Protruding portion; 17. First annular extension portion; 18. Second annular extension portion; 181. Second annular limiting portion; 19. First outer flange; 2. Cover; 21. First annular limiting portion; 3. Bearing; 31. Inner flange; 32. Second outer flange; 33. Third outer flange; 4. Shock absorber; 5. Support member. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Embodiments of the present invention provide a hydraulic limit block, a suspension, and a vehicle to solve the problem in the related art that the static stiffness and length of the limit block in the suspension are not adjustable, and the limit block cannot be universally used when facing different vehicle models.

[0047] As shown in Figure 1, an embodiment of the present invention provides a liquid resistance limit block, which may include: a limit block body 1, the limit block body 1 is provided with an installation channel 11, the limit block body 1 is provided with an injection port 12 and a liquid filling chamber 13, the injection port 12 is connected to the liquid filling chamber 13, and the limit block body 1 is made of elastic material; a cover 2, the cover 2 is installed on the injection port 12 to seal the liquid filling chamber 13 from the outside.

[0048] The amount of liquid in the stopper body 1 can be adjusted by injecting liquid into the injection port 12. The liquid flows into the bottom of the liquid filling chamber 13. Because the stopper body 1 is made of an elastic material, the weight of the liquid causes the stopper body 1 to deform. The degree of deformation is proportional to the amount of liquid injected, allowing the static stiffness and length of the stopper body 1 to be adjusted. By varying the amount of liquid injected into the liquid filling chamber 13, the stopper body 1 can be adapted to the requirements of different vehicle models, achieving universality and improving the practicality of the stopper body 1.

[0049] In some embodiments, the stopper body 1 can be made of rubber or a thermoplastic elastomer, such as TPEE, TPV, or TPU. The cover 2 can be made of a thermoplastic elastomer such as TPU or a plastic. If the material is rubber, vulcanization molding is used; if the material is a thermoplastic elastomer or plastic, injection molding is used.

[0050] In some embodiments, the liquid may be an ethylene glycol aqueous solution, which is a liquid with antifreeze properties and a high boiling point.

[0051] In some embodiments, as shown in Figure 1, the liquid-filled chamber 13 may include: a first cavity 131 and a second cavity 132, the first cavity 131 and the second cavity 132 being spaced apart along the length direction of the limit block body 1 (i.e., in Figure 1, spaced apart along the up and down directions); a second flow channel 133, the second flow channel 133 being connected to the first cavity 131 and the second cavity 132, and the inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132.

[0052] Among them, when the limit block body 1 just contacts and is squeezed, the force generated is used to overcome the tensile deformation of the limit block body 1 caused by the injection of liquid, so that a lower front-end compression stiffness can be achieved, meeting the comfort requirements of the entire vehicle with the limit block body 1.

[0053] When the limit block body 1 continues to be compressed, the liquid starts to flow upward from the second cavity 132 at the lower part of the limit block body 1 through the second flow channel 133. The inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132, which can increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smooth and natural, which is conducive to avoiding large impacts of the suspension.

[0054] When the limit block body 1 is restored, the limit block body 1 first recovers a certain length through elastic deformation, and then the liquid quickly flows back, which is conducive to the rapid restoration of the limit block body 1.

[0055] In some embodiments, as shown in FIG. 1 , the inner diameter of the second flow channel 133 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0056] Among them, from top to bottom, the inner diameter of the second flow channel 133 gradually becomes smaller, which can further increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smoother and more natural, which is conducive to avoiding large impacts of the suspension.

[0057] In some embodiments, as shown in FIG1 , the stopper body 1 is provided with multiple liquid-filled chambers 13 along its length, and any two adjacent liquid-filled chambers 13 are connected by a third flow channel 14. FIG1 illustrates that the stopper body 1 has two liquid-filled chambers 13; when the stopper body 1 is squeezed and compressed, the tensile deformation of the stopper body 1 itself is first overcome, followed by the compressive stiffness of the lower liquid-filled chamber 13, then the compressive stiffness of the lower liquid-filled chamber 13 and the third flow channel 14, and finally the compressive stiffness of the upper liquid-filled chamber 13, thereby greatly ensuring the damping effect of the stopper body 1.

[0058] In some embodiments, as shown in FIG. 1 , in any two adjacent liquid-filled chambers 13 , the angle between the intersection of the extension line of the second flow channel 133 and the extension line of the third flow channel 14 is set to be an obtuse angle.

[0059] Specifically, the second flow channel 133 in the upper liquid-filled chamber 13 gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom. The second flow channel 133 in the lower liquid-filled chamber 13 also gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom, while the third flow channel 14 gradually moves closer to the mounting channel 11 from top to bottom. When the stopper body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the ability of the stopper body 1 to overcome the squeezing force and further ensure the damping effect of the stopper body 1.

[0060] Of course, the second flow channel 133 in the upper liquid-filled chamber 13 may also gradually approach the mounting channel 11 of the stopper body 1 from top to bottom, and the second flow channel 133 in the lower liquid-filled chamber 13 may also gradually approach the mounting channel 11 of the stopper body 1 from top to bottom, while the third flow channel 14 may also gradually move away from the mounting channel 11 from top to bottom. When the stopper body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the ability of the stopper body 1 to overcome the squeezing force and further ensure the damping effect of the stopper body 1.

[0061] In some embodiments, the inner diameter of the third flow channel 14 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0062] Among them, from top to bottom, the inner diameter of the third flow channel 14 gradually decreases, which can further increase the compression stiffness of the limit block body 1, making the transition section of the compression curve between the two liquid filling chambers 13 smoother and more natural, which is conducive to avoiding the problem that the limit block body 1 is easily damaged by squeezing at the connection point between the liquid filling chamber 13 and the third flow channel 14.

[0063] In some embodiments, as shown in FIG1 , the cross-section of the first cavity 131 is racetrack-shaped, and the cross-section of the second cavity 132 is circular. The cross-sections of the first cavity 131 and the second cavity 132 are adapted to the outer contour of the stopper body 1 to improve the durability of the stopper body 1 due to large differences in wall thickness.

[0064] In some embodiments, as shown in FIG1 , the limit block body 1 is sequentially provided with a recess 15 and a protrusion 16 along its length direction; the first cavity 131 is opened in the recess 15 , and the second cavity 132 is opened in the protrusion 16 .

[0065] The recessed portion 15 and raised portion 16 provide the stopper body 1 with a sufficient amount of space to deform when subjected to compression, providing a cushioning and shock-absorbing effect. The first cavity 131 and second cavity 132 of the two liquid-filled chambers 13 are arranged in a roughly S-shaped pattern, enhancing the damping effect of the stopper body 1.

[0066] In some embodiments, as shown in Figure 1, one end portion of the limit block body 1 is provided with a first annular extension portion 17 and a second annular extension portion 18, and the second annular extension portion 18 is located inside the first annular extension portion 17; the injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18; the inner bottom wall of the injection port 12 is provided with a first flow channel 121, and the first flow channel 121 is connected to the liquid filling chamber 13; the sealing cover 2 covers the injection port 12 and is fixed to one end portion of the limit block body 1.

[0067] The injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18, which facilitates the injection of liquid into the limit block body 1 and prevents the need for external tools for injection, which is inconvenient to operate and prone to liquid overflow.

[0068] Furthermore, the inner diameter of the first flow channel 121 can also gradually decrease from top to bottom. When the limit block body 1 is compressed to the upper limit position, the first flow channel 121 can also ensure the compression stiffness of the upper end of the limit block body 1, thereby ensuring that the compression stiffness of all sections of the limit block body 1 is smoother and more natural.

[0069] In some embodiments, as shown in Figure 1, a first annular limiting groove is provided on the inner side of the first annular extension portion 17; a first annular limiting portion 21 is provided on the side wall of the cover 2, and the cover 2 is inserted into the first annular limiting groove through the first annular limiting portion 21 to be fixed to the inner side of the first annular extension portion 17.

[0070] Among them, through the first annular limiting groove of the first annular extension part 17 and the first annular limiting part 21 of the cover 2, the assembly of the cover 2 can be completed quickly and conveniently, while ensuring good sealing between the cover 2 and the limiting block body 1 to prevent liquid overflow.

[0071] In some embodiments, as shown in Figure 1, the second annular extension portion 18 is provided with a second annular limiting portion 181; the cover 2 is provided with a second annular limiting groove; the cover 2 is inserted into the second annular limiting portion 181 through the second annular limiting groove to be fixed to the second annular extension portion 18.

[0072] Among them, the second annular limiting portion 181 of the second annular extension portion 18 and the second annular limiting groove of the cover 2 can further improve the sealing between the cover 2 and the limiting block body 1; it also facilitates the assembly work between the cover 2 and the limiting block body 1, which is convenient, fast and easy to operate.

[0073] Specifically, the staff first presses the cover 2, presses the second annular limiting groove at the bottom of the cover 2 into the second annular extension 18, completes the preliminary positioning work, and then moves the outer first annular extension 17 to open outward, so that the first annular limiting portion 21 on the side wall of the cover 2 is inserted into the first annular limiting groove of the first annular extension 17, thereby completing the installation of the cover 2.

[0074] In some embodiments, a first outer flange 19 is provided at one end of the limit block body 1 .

[0075] In some embodiments, as shown in FIG1 and FIG2 , an embodiment of the present invention provides a suspension, which may include: a limit block body 1, the limit block body 1 having a mounting channel 11, an injection port 12 and a liquid filling chamber 13, the injection port 12 communicating with the liquid filling chamber 13, the limit block body 1 being made of an elastic material; a cover 2, the cover 2 being mounted on the injection port 12 to seal the liquid filling chamber 13 from the outside; a first outer flange 19 being provided at one end of the limit block body 1. The suspension further includes a bearing 3 and a shock absorber 4; an inner flange 31 being provided at one end of the bearing 3, a support member 5 being provided on the inner side of the bearing 3; one end of the limit block body 1 being fixed between the support member 5 and the inner flange 31 via the first outer flange 19; the limit block body 1 being mounted to the outer wall of the piston rod of the shock absorber 4 via the bearing 3 and the support member 5.

[0076] The upper end of the limit block body 1 is provided with a first outer flange 19 , and the first outer flange 19 is clamped by the support surface provided by the support member 5 and the inner flange 31 provided by the bearing 3 to fix the limit block body 1 .

[0077] Furthermore, the top surface of the limit block body 1 fits in with the convex bulge at the bottom of the support member 5 (i.e., the bottom surface of the support member 5 is convex), which ensures that the limit block body 1 has good centering. Assembly is easy to operate, no tooling is required for press-fitting, and the fixation is secure without the risk of falling off.

[0078] In some embodiments, as shown in Figure 1, the inner flange 31 is provided with a second outer flange 32, and the second outer flange 32 is in contact with the side wall of the limit block body 1; the cross-section of the second outer flange 32 is truncated cone-shaped, and the wide end of the second outer flange 32 is fixed to the inner flange 31, and the narrow end of the second outer flange 32 is provided with a third outer flange 33.

[0079] The inner diameter of the second outer flange 32 gradually decreases from top to bottom, which can prevent the limit block body 1 from being separated from between the bearing 3 and the support member 5. The second outer flange 32 can hinder the limit block body 1 from being separated further, greatly improving the reliability and stability of the assembly of the limit block body 1. The third outer flange 33 facilitates the installation of the upper end of the limit block body 1 into the interior of the bearing 3.

[0080] In this suspension, the amount of liquid in the stopper body 1 can be adjusted by injecting liquid into the injection port 12. The liquid flows into the bottom of the liquid filling chamber 13. Because the stopper body 1 is made of an elastic material, the weight of the liquid causes the stopper body 1 to deform. The degree of deformation is proportional to the amount of liquid injected, allowing the static stiffness and length of the stopper body 1 to be adjusted. By varying the amount of liquid injected into the liquid filling chamber 13, the stopper body 1 can be adapted to the requirements of different vehicle models, achieving universality.

[0081] In some embodiments, the stopper body 1 can be made of rubber or a thermoplastic elastomer, such as TPEE, TPV, or TPU. The cover 2 can be made of a thermoplastic elastomer such as TPU or a plastic. If the material is rubber, vulcanization molding is used; if the material is a thermoplastic elastomer or plastic, injection molding is used.

[0082] In some embodiments, the liquid may be an ethylene glycol aqueous solution, which is a liquid with antifreeze properties and a high boiling point.

[0083] In some embodiments, as shown in Figure 1, the liquid-filled chamber 13 may include: a first cavity 131 and a second cavity 132, the first cavity 131 and the second cavity 132 being spaced apart along the length direction of the limit block body 1 (i.e., in Figure 1, spaced apart along the up and down directions); a second flow channel 133, the second flow channel 133 being connected to the first cavity 131 and the second cavity 132, and the inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132.

[0084] Among them, when the limit block body 1 just contacts and is squeezed, the force generated is used to overcome the tensile deformation of the limit block body 1 caused by the injection of liquid, so that a lower front-end compression stiffness can be achieved, meeting the comfort requirements of the entire vehicle with the limit block body 1.

[0085] When the limit block body 1 continues to be compressed, the liquid starts to flow upward from the second cavity 132 at the lower part of the limit block body 1 through the second flow channel 133. The inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132, which can increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smooth and natural, which is conducive to avoiding large impacts of the suspension.

[0086] When the limit block body 1 is restored, the limit block body 1 first recovers a certain length through elastic deformation, and then the liquid quickly flows back, which is conducive to the rapid restoration of the limit block body 1.

[0087] In some embodiments, as shown in FIG. 1 , the inner diameter of the second flow channel 133 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0088] Among them, from top to bottom, the inner diameter of the second flow channel 133 gradually becomes smaller, which can further increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smoother and more natural, which is conducive to avoiding large impacts of the suspension.

[0089] In some embodiments, as shown in FIG1 , the stopper body 1 is provided with multiple liquid-filled chambers 13 along its length, and any two adjacent liquid-filled chambers 13 are connected by a third flow channel 14. FIG1 illustrates that the stopper body 1 has two liquid-filled chambers 13; when the stopper body 1 is squeezed and compressed, the tensile deformation of the stopper body 1 itself is first overcome, followed by the compressive stiffness of the lower liquid-filled chamber 13, then the compressive stiffness of the lower liquid-filled chamber 13 and the third flow channel 14, and finally the compressive stiffness of the upper liquid-filled chamber 13, thereby greatly ensuring the damping effect of the stopper body 1.

[0090] In some embodiments, as shown in FIG. 1 , in any two adjacent liquid-filled chambers 13 , the angle between the intersection of the extension line of the second flow channel 133 and the extension line of the third flow channel 14 is set to be an obtuse angle.

[0091] Specifically, the second flow channel 133 in the upper liquid-filled chamber 13 gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom. The second flow channel 133 in the lower liquid-filled chamber 13 also gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom, while the third flow channel 14 gradually moves closer to the mounting channel 11 from top to bottom. When the stopper body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the ability of the stopper body 1 to overcome the squeezing force and further ensure the damping effect of the stopper body 1.

[0092] Of course, the second flow channel 133 in the upper liquid filling chamber 13 may also gradually approach the mounting channel 11 of the limit block body 1 from top to bottom, and the second flow channel 133 in the lower liquid filling chamber 13 may also gradually approach the mounting channel 11 of the limit block body 1 from top to bottom, and the third flow channel 14 may also gradually move away from the mounting channel 11 from top to bottom. When the limit block body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the limit block body 1's ability to overcome the squeezing force and further ensure the damping effect of the limit block body 1.

[0093] In some embodiments, the inner diameter of the third flow channel 14 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0094] Among them, from top to bottom, the inner diameter of the third flow channel 14 gradually decreases, which can further increase the compression stiffness of the limit block body 1, making the transition section of the compression curve between the two liquid filling chambers 13 smoother and more natural, which is conducive to avoiding the problem that the limit block body 1 is easily damaged by squeezing at the connection point between the liquid filling chamber 13 and the third flow channel 14.

[0095] In some embodiments, as shown in FIG1 , the cross-section of the first cavity 131 is racetrack-shaped, and the cross-section of the second cavity 132 is circular. The cross-sections of the first cavity 131 and the second cavity 132 are adapted to the outer contour of the stopper body 1 to improve the durability of the stopper body 1 due to large differences in wall thickness.

[0096] In some embodiments, as shown in FIG1 , the limit block body 1 is sequentially provided with a recess 15 and a protrusion 16 along its length direction; the first cavity 131 is opened in the recess 15 , and the second cavity 132 is opened in the protrusion 16 .

[0097] The recessed portion 15 and raised portion 16 provide the stopper body 1 with a sufficient amount of space to deform when subjected to compression, providing a cushioning and shock-absorbing effect. The first cavity 131 and second cavity 132 of the two liquid-filled chambers 13 are arranged in a roughly S-shaped pattern, enhancing the damping effect of the stopper body 1.

[0098] In some embodiments, as shown in Figure 1, one end portion of the limit block body 1 is provided with a first annular extension portion 17 and a second annular extension portion 18, and the second annular extension portion 18 is located inside the first annular extension portion 17; the injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18; the inner bottom wall of the injection port 12 is provided with a first flow channel 121, and the first flow channel 121 is connected to the liquid filling chamber 13; the sealing cover 2 covers the injection port 12 and is fixed to one end portion of the limit block body 1.

[0099] The injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18, which facilitates the injection of liquid into the limit block body 1 and prevents the need for external tools for injection, which is inconvenient to operate and prone to liquid overflow.

[0100] Furthermore, the inner diameter of the first flow channel 121 can also gradually decrease from top to bottom. When the limit block body 1 is compressed to the upper limit position, the first flow channel 121 can also ensure the compression stiffness of the upper end of the limit block body 1, thereby ensuring that the compression stiffness of all sections of the limit block body 1 is smoother and more natural.

[0101] In some embodiments, as shown in Figure 1, a first annular limiting groove is provided on the inner side of the first annular extension portion 17; a first annular limiting portion 21 is provided on the side wall of the cover 2, and the cover 2 is inserted into the first annular limiting groove through the first annular limiting portion 21 to be fixed to the inner side of the first annular extension portion 17.

[0102] Among them, through the first annular limiting groove of the first annular extension part 17 and the first annular limiting part 21 of the cover 2, the assembly of the cover 2 can be completed quickly and conveniently, while ensuring good sealing between the cover 2 and the limiting block body 1 to prevent liquid overflow.

[0103] In some embodiments, as shown in Figure 1, the second annular extension portion 18 is provided with a second annular limiting portion 181; the cover 2 is provided with a second annular limiting groove; the cover 2 is inserted into the second annular limiting portion 181 through the second annular limiting groove to be fixed to the second annular extension portion 18.

[0104] Among them, the second annular limiting portion 181 of the second annular extension portion 18 and the second annular limiting groove of the cover 2 can further improve the sealing between the cover 2 and the limiting block body 1; it also facilitates the assembly work between the cover 2 and the limiting block body 1, which is convenient, fast and easy to operate.

[0105] Specifically, the staff first presses the cover 2, presses the second annular limiting groove at the bottom of the cover 2 into the second annular extension 18, completes the preliminary positioning work, and then moves the outer first annular extension 17 to open outward, so that the first annular limiting portion 21 on the side wall of the cover 2 is inserted into the first annular limiting groove of the first annular extension 17, thereby completing the installation of the cover 2.

[0106] In some embodiments, the present invention provides a vehicle comprising a suspension as described in some of the above embodiments. The vehicle comprising the suspension has a simple structure and is easy to assemble, thereby extending the service life of suspension components, ensuring the reliability and durability of the entire vehicle, and improving the vehicle's ride comfort.

[0107] Specifically, the suspension may include: a limit block body 1, the limit block body 1 is provided with an installation channel 11, the limit block body 1 is provided with an injection port 12 and a liquid filling chamber 13, the injection port 12 is connected to the liquid filling chamber 13, and the limit block body 1 is made of elastic material; a cover 2, the cover 2 is installed on the injection port 12 to seal the liquid filling chamber 13 from the outside.

[0108] By injecting liquid into the injection port 12, the amount of liquid in the stopper body 1 can be adjusted. The liquid flows into the bottom of the liquid filling chamber 13. Because the stopper body 1 is made of an elastic material, the weight of the liquid causes the stopper body 1 to deform. The degree of deformation is proportional to the amount of liquid injected, allowing the static stiffness and length of the stopper body 1 to be adjusted. By varying the amount of liquid injected into the liquid filling chamber 13, the stopper body 1 can be adapted to the requirements of different vehicle models, achieving universality.

[0109] In some embodiments, the stopper body 1 can be made of rubber or a thermoplastic elastomer, such as TPEE, TPV, or TPU. The cover 2 can be made of a thermoplastic elastomer such as TPU or a plastic. If the material is rubber, vulcanization molding is used; if the material is a thermoplastic elastomer or plastic, injection molding is used.

[0110] In some embodiments, the liquid may be an ethylene glycol aqueous solution, which is a liquid with antifreeze properties and a high boiling point.

[0111] In some embodiments, as shown in Figure 1, the liquid-filled chamber 13 may include: a first cavity 131 and a second cavity 132, the first cavity 131 and the second cavity 132 being spaced apart along the length direction of the limit block body 1 (i.e., in Figure 1, spaced apart along the up and down directions); a second flow channel 133, the second flow channel 133 being connected to the first cavity 131 and the second cavity 132, and the inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132.

[0112] Among them, when the limit block body 1 just contacts and is squeezed, the force generated is used to overcome the tensile deformation of the limit block body 1 caused by the injection of liquid, so that a lower front-end compression stiffness can be achieved, meeting the comfort requirements of the entire vehicle with the limit block body 1.

[0113] When the limit block body 1 continues to be compressed, the liquid starts to flow upward from the second cavity 132 at the lower part of the limit block body 1 through the second flow channel 133. The inner diameter of the second flow channel 133 is smaller than the inner diameter of the second cavity 132, which can increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smooth and natural, which is conducive to avoiding large impacts of the suspension.

[0114] When the limit block body 1 is restored, the limit block body 1 first recovers a certain length through elastic deformation, and then the liquid quickly flows back, which is conducive to the rapid restoration of the limit block body 1.

[0115] In some embodiments, as shown in FIG. 1 , the inner diameter of the second flow channel 133 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0116] Among them, from top to bottom, the inner diameter of the second flow channel 133 gradually becomes smaller, which can further increase the compression stiffness of the rear section of the limit block body 1, making the transition section of the compression curve of the limit block body 1 smoother and more natural, which is conducive to avoiding large impacts of the suspension.

[0117] In some embodiments, as shown in FIG1 , the stopper body 1 is provided with multiple liquid-filled chambers 13 along its length, and any two adjacent liquid-filled chambers 13 are connected by a third flow channel 14. FIG1 illustrates that the stopper body 1 has two liquid-filled chambers 13; when the stopper body 1 is squeezed and compressed, the tensile deformation of the stopper body 1 itself is first overcome, followed by the compressive stiffness of the lower liquid-filled chamber 13, then the compressive stiffness of the lower liquid-filled chamber 13 and the third flow channel 14, and finally the compressive stiffness of the upper liquid-filled chamber 13, thereby greatly ensuring the damping effect of the stopper body 1.

[0118] In some embodiments, as shown in FIG. 1 , in any two adjacent liquid-filled chambers 13 , the angle between the intersection of the extension line of the second flow channel 133 and the extension line of the third flow channel 14 is set to be an obtuse angle.

[0119] Specifically, the second flow channel 133 in the upper liquid-filled chamber 13 gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom. The second flow channel 133 in the lower liquid-filled chamber 13 also gradually moves away from the mounting channel 11 of the stopper body 1 from top to bottom, while the third flow channel 14 gradually moves closer to the mounting channel 11 from top to bottom. When the stopper body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the ability of the stopper body 1 to overcome the squeezing force and further ensure the damping effect of the stopper body 1.

[0120] Of course, the second flow channel 133 in the upper liquid filling chamber 13 may also gradually approach the mounting channel 11 of the limit block body 1 from top to bottom, and the second flow channel 133 in the lower liquid filling chamber 13 may also gradually approach the mounting channel 11 of the limit block body 1 from top to bottom, and the third flow channel 14 may also gradually move away from the mounting channel 11 from top to bottom. When the limit block body 1 is squeezed and compressed, the upward flow path of the liquid is generally S-shaped, which can improve the limit block body 1's ability to overcome the squeezing force and further ensure the damping effect of the limit block body 1.

[0121] In some embodiments, the inner diameter of the third flow channel 14 gradually decreases along the spacing direction between the first cavity 131 and the second cavity 132 .

[0122] Among them, from top to bottom, the inner diameter of the third flow channel 14 gradually decreases, which can further increase the compression stiffness of the limit block body 1, making the transition section of the compression curve between the two liquid filling chambers 13 smoother and more natural, which is conducive to avoiding the problem that the limit block body 1 is easily damaged by squeezing at the connection point between the liquid filling chamber 13 and the third flow channel 14.

[0123] In some embodiments, as shown in FIG1 , the cross-section of the first cavity 131 is racetrack-shaped, and the cross-section of the second cavity 132 is circular. The cross-sections of the first cavity 131 and the second cavity 132 are adapted to the outer contour of the stopper body 1 to improve the durability of the stopper body 1 due to large differences in wall thickness.

[0124] In some embodiments, as shown in FIG1 , the limit block body 1 is sequentially provided with a recess 15 and a protrusion 16 along its length direction; the first cavity 131 is opened in the recess 15 , and the second cavity 132 is opened in the protrusion 16 .

[0125] The recessed portion 15 and raised portion 16 provide the stopper body 1 with a sufficient amount of space to deform when subjected to compression, providing a cushioning and shock-absorbing effect. The first cavity 131 and second cavity 132 of the two liquid-filled chambers 13 are arranged in a roughly S-shaped pattern, enhancing the damping effect of the stopper body 1.

[0126] In some embodiments, as shown in Figure 1, one end portion of the limit block body 1 is provided with a first annular extension portion 17 and a second annular extension portion 18, and the second annular extension portion 18 is located inside the first annular extension portion 17; the injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18; the inner bottom wall of the injection port 12 is provided with a first flow channel 121, and the first flow channel 121 is connected to the liquid filling chamber 13; the sealing cover 2 covers the injection port 12 and is fixed to one end portion of the limit block body 1.

[0127] The injection port 12 is formed between the first annular extension portion 17 and the second annular extension portion 18, which facilitates the injection of liquid into the limit block body 1 and prevents the need for external tools for injection, which is inconvenient to operate and prone to liquid overflow.

[0128] Furthermore, the inner diameter of the first flow channel 121 can also gradually decrease from top to bottom. When the limit block body 1 is compressed to the upper limit position, the first flow channel 121 can also ensure the compression stiffness of the upper end of the limit block body 1, thereby ensuring that the compression stiffness of all sections of the limit block body 1 is smoother and more natural.

[0129] In some embodiments, as shown in Figure 1, a first annular limiting groove is provided on the inner side of the first annular extension portion 17; a first annular limiting portion 21 is provided on the side wall of the cover 2, and the cover 2 is inserted into the first annular limiting groove through the first annular limiting portion 21 to be fixed to the inner side of the first annular extension portion 17.

[0130] Among them, through the first annular limiting groove of the first annular extension part 17 and the first annular limiting part 21 of the cover 2, the assembly of the cover 2 can be completed quickly and conveniently, while ensuring good sealing between the cover 2 and the limiting block body 1 to prevent liquid overflow.

[0131] In some embodiments, as shown in Figure 1, the second annular extension portion 18 is provided with a second annular limiting portion 181; the cover 2 is provided with a second annular limiting groove; the cover 2 is inserted into the second annular limiting portion 181 through the second annular limiting groove to be fixed to the second annular extension portion 18.

[0132] Among them, the second annular limiting portion 181 of the second annular extension portion 18 and the second annular limiting groove of the cover 2 can further improve the sealing between the cover 2 and the limiting block body 1; it also facilitates the assembly work between the cover 2 and the limiting block body 1, which is convenient, fast and easy to operate.

[0133] Specifically, the staff first presses the cover 2, presses the second annular limiting groove at the bottom of the cover 2 into the second annular extension 18, completes the preliminary positioning work, and then moves the outer first annular extension 17 to open outward, so that the first annular limiting portion 21 on the side wall of the cover 2 is inserted into the first annular limiting groove of the first annular extension 17, thereby completing the installation of the cover 2.

[0134] In some embodiments, a first outer flange 19 is provided at one end of the limit block body 1 .

[0135] The upper end of the limit block body 1 is provided with a first outer flange 19 , and the first outer flange 19 is clamped by the support surface provided by the support member 5 and the inner flange 31 provided by the bearing 3 to fix the limit block body 1 .

[0136] Furthermore, the top surface of the limit block body 1 fits in with the convex bulge at the bottom of the support member 5 (i.e., the bottom surface of the support member 5 is convex), which ensures that the limit block body 1 has good centering. Assembly is easy to operate, no tooling is required for press-fitting, and the fixation is secure without the risk of falling off.

[0137] In some embodiments, as shown in Figure 1, the inner flange 31 is provided with a second outer flange 32, and the second outer flange 32 is in contact with the side wall of the limit block body 1; the cross-section of the second outer flange 32 is truncated cone-shaped, and the wide end of the second outer flange 32 is fixed to the inner flange 31, and the narrow end of the second outer flange 32 is provided with a third outer flange 33.

[0138] The inner diameter of the second outer flange 32 gradually decreases from top to bottom, which can prevent the limit block body 1 from being separated from between the bearing 3 and the support member 5. The second outer flange 32 can hinder the limit block body 1 from being separated further, greatly improving the reliability and stability of the assembly of the limit block body 1. The third outer flange 33 facilitates the installation of the upper end of the limit block body 1 into the interior of the bearing 3.

[0139] In summary, when the vehicle is fully loaded and driving through a bumpy road, that is, the limit block body 1 is in a high-frequency and small-amplitude working condition, the lower end of the limit block body 1 is frequently contacted, and the liquid can flow upward through the third flow channel 14, the second flow channel 133 and the first flow channel 121, thereby eliminating the high-frequency hardening phenomenon and generating a low-stiffness, low-damping force to absorb the vibration of the shock absorber 4. The liquid flows through the second flow channel 133, the third flow channel 14 and the first flow channel 121 into each chamber to consume energy and achieve the purpose of vibration reduction.

[0140] Specifically, when the vehicle is in the upper limit state of wheel hop, that is, the limit block body 1 is in a low-frequency and large-amplitude working condition, the liquid flows through the third flow channel 14, the second flow channel 133 and the first flow channel 121, and the overall spatial size of the third flow channel 14 is the largest, the overall spatial size of the second flow channel 133 is moderate, and the overall spatial size of the first flow channel 121 is the smallest, and the inner diameters of the three gradually decrease from top to bottom. In this process, high stiffness and high damping are generated to absorb the vibration of the shock absorber 4, thereby playing a role in vibration isolation and noise reduction.

[0141] Specifically, since liquid is incompressible, the stop height of the limit block body 1 changes accordingly with the amount of liquid injected, meeting the travel requirements of different suspensions, and can be used universally among different models on the same platform, reducing development and verification costs.

[0142] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0143] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0144] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A liquid resistance limit block, characterized in that: It includes: A limit block body (1), the limit block body (1) is provided with a mounting channel (11), the limit block body (1) is provided with an injection port (12) and a liquid filling chamber (13), the injection port (12) is communicated with the liquid filling chamber (13), and the limit block body (1) is made of an elastic material; A sealing cover (2) is installed on the injection port (12) to seal the liquid filling chamber (13) from the outside.

2. The liquid resistance limit block according to claim 1, characterized in that: The liquid-filled chamber (13) comprises: A first cavity (131) and a second cavity (132), wherein the first cavity (131) and the second cavity (132) are spaced apart and distributed along the length direction of the limit block body (1); A second flow channel (133), wherein the second flow channel (133) is connected to the first cavity (131) and the second cavity (132), and the inner diameter of the second flow channel (133) is smaller than the inner diameter of the second cavity (132).

3. The liquid resistance limit block according to claim 2, characterized in that: Along the spacing direction between the first cavity (131) and the second cavity (132), the inner diameter of the second flow channel (133) gradually decreases.

4. The liquid resistance limit block according to claim 2, characterized in that: The limit block body (1) is provided with a plurality of liquid-filled chambers (13) along its length direction, and any two adjacent liquid-filled chambers (13) are connected via a third flow channel (14).

5. The liquid resistance limit block according to claim 4, characterized in that: In any two adjacent liquid-filled chambers (13), the angle between the intersection of the extension line of the second flow channel (133) and the extension line of the third flow channel (14) is set to be an obtuse angle.

6. The liquid resistance limit block according to claim 4, characterized in that: Along the spacing direction between the first cavity (131) and the second cavity (132), the inner diameter of the third flow channel (14) gradually decreases.

7. The liquid resistance limit block according to claim 2, characterized in that: The cross section of the first cavity (131) is in the shape of a racetrack, and the cross section of the second cavity (132) is in the shape of a circle.

8. The liquid resistance limit block according to claim 7, characterized in that: The limit block body (1) is provided with a recessed portion (15) and a raised portion (16) in sequence along its length direction; The first cavity (131) is opened in the recessed portion (15), and the second cavity (132) is opened in the raised portion (16).

9. The liquid resistance limit block according to claim 1, characterized in that: One end portion of the limit block body (1) is provided with a first annular extension portion (17) and a second annular extension portion (18), and the second annular extension portion (18) is located inside the first annular extension portion (17); The injection port (12) is formed between the first annular extension portion (17) and the second annular extension portion (18); The inner bottom wall of the injection port (12) is provided with a first flow channel (121), and the first flow channel (121) is connected to the liquid filling chamber (13); The sealing cover (2) covers the injection port (12) and is snap-fitted and fixed to one end of the limiting block body (1).

10. The liquid resistance limit block according to claim 9, characterized in that: A first annular limiting groove is formed on the inner side of the first annular extension portion (17); The side wall of the sealing cover (2) is provided with a first annular limiting portion (21), and the sealing cover (2) is inserted into the first annular limiting groove through the first annular limiting portion (21) to be fixedly engaged with the inner side of the first annular extension portion (17).

11. The liquid resistance limit block according to claim 9, characterized in that: The second annular extension portion (18) is provided with a second annular limiting portion (181); The sealing cover (2) is provided with a second annular limiting groove; The sealing cover (2) is inserted into the second annular limiting portion (181) via the second annular limiting groove so as to be fixedly engaged with the second annular extending portion (18).

12. The liquid group limit block according to claim 10, characterized in that: The second annular extension portion (18) is provided with a second annular limiting portion (181); The sealing cover (2) is provided with a second annular limiting groove; The sealing cover (2) is inserted into the second annular limiting portion (181) via the second annular limiting groove so as to be fixedly engaged with the second annular extending portion (18).

13. The liquid resistance limit block according to claim 1, characterized in that: One end of the limit block body (1) is provided with a first outer flange (19).

14. A suspension, characterized in that: It includes: A limit block body (1), the limit block body (1) is provided with a mounting channel (11), the limit block body (1) is provided with an injection port (12) and a liquid filling chamber (13), the injection port (12) is communicated with the liquid filling chamber (13), and the limit block body (1) is made of an elastic material; A sealing cover (2), the sealing cover (2) being mounted on the injection port (12) so as to seal the liquid filling chamber (13) from the outside; One end of the limit block body (1) is provided with a first outer flange (19); It also includes a bearing (3) and a shock absorber (4); One end of the bearing (3) is provided with an inner flange (31), and the inner side of the bearing (3) is provided with a support member (5); One end of the limit block body (1) is fixed between the support member (5) and the inner flange (31) via the first outer flange (19); The limit block body (1) is mounted on the outer wall of the piston rod of the shock absorber (4) via the bearing (3) and the support member (5).

15. The suspension according to claim 14, characterized in that: The inner flange (31) is provided with a second outer flange (32), and the second outer flange (32) is in contact with the side wall of the limit block body (1); The cross section of the second outer flange (32) is in the shape of a truncated cone, and the wider end of the second outer flange (32) is fixed to the inner flange (31), and the narrower end of the second outer flange (32) is provided with a third outer flange (33).

16. A vehicle, characterized in that: It comprises a suspension as claimed in claim 14 .

17. The vehicle according to claim 16, characterized in that The inner flange (31) is provided with a second outer flange (32), and the second outer flange (32) is in contact with the side wall of the limit block body (1); The cross section of the second outer flange (32) is in the shape of a truncated cone, and the wider end of the second outer flange (32) is fixed to the inner flange (31), and the narrower end of the second outer flange (32) is provided with a third outer flange (33).

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