Fluid-sealed suspension and vehicle

Abstract

The application provides a liquid seal suspension and a vehicle, and belongs to the technical field of vehicles, and comprises a main spring rubber body, a supporting arm, a main spring framework, a flow channel assembly and a leather cup; the flow channel assembly is arranged between the main spring rubber body and the leather cup, and forms an upper liquid chamber with the upper main spring rubber body and a lower liquid chamber with the lower leather cup; the main spring rubber body is provided with a liquid inlet hole communicating with the upper liquid chamber, and the liquid inlet hole is provided with an interference-fitted steel ball; the interference fit between the main spring rubber body and the steel ball forms a first-stage steel ball anti-falling structure; the supporting arm is arranged at the upper end of the main spring rubber body and blocks the liquid inlet hole, forming a second-stage steel ball anti-falling structure; the main spring framework is wrapped outside the main spring rubber body, the flow channel assembly and the leather cup, and connects the main spring rubber body, the flow channel assembly and the leather cup together. The liquid seal suspension provided by the application can prevent the steel ball from falling out through the first-stage steel ball anti-falling structure and the second-stage steel ball anti-falling structure, and the reliability of the liquid seal suspension work is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, and particularly relates to a liquid seal suspension and a vehicle. BACKGROUND

[0002] With the increasing requirement of people on the comfort and smoothness of automobiles, the suspension structure of pure rubber blocks cannot meet the requirement, and the hydraulic suspension is paid attention to by automobile companies all over the world due to its excellent vibration isolation performance, and is rapidly developed and popularized in automobiles.

[0003] The currently used liquid seal suspension has the following defects: the liquid inlet of the liquid seal suspension is generally designed on the framework, and the steel ball is directly punched into the liquid inlet hole through interference fit, and in the use process, the steel ball is easy to fall out, and the working reliability of the liquid seal suspension is poor. SUMMARY

[0004] The liquid seal suspension and the vehicle provided by the embodiments of the present application aim to solve the problem that the steel ball is easy to fall out, and the working reliability of the liquid seal suspension is poor.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: a liquid seal suspension is provided, comprising: a main spring rubber body, a supporting arm, a main spring framework, a flow channel assembly and a skin bowl; the flow channel assembly is arranged between the main spring rubber body and the skin bowl, and forms an upper liquid chamber with the main spring rubber body above and a lower liquid chamber with the skin bowl below; the main spring rubber body is provided with a liquid inlet hole communicating with the upper liquid chamber, and an interference fit steel ball is arranged in the liquid inlet hole; the interference fit between the main spring rubber body and the steel ball forms a first level steel ball anti-falling structure; the supporting arm is arranged at the upper end of the main spring rubber body and blocks the liquid inlet hole, forming a second level steel ball anti-falling structure; and the main spring framework is wrapped outside the main spring rubber body, the flow channel assembly and the skin bowl.

[0006] In combination with the first aspect, in a possible implementation manner, the upper end of the main spring rubber body is provided with a connecting portion, the connecting portion is provided with a connecting groove into which the supporting arm extends, and the liquid inlet hole is arranged at the bottom of the connecting groove.

[0007] In combination with the first aspect, in a possible implementation manner, the bottom of the connecting groove is provided with a groove, a column body is arranged in the groove, and the liquid inlet hole is arranged on the column body.

[0008] In combination with the first aspect, in a possible implementation manner, the upper end face of the column body is flush with the bottom face of the connecting groove; the bottom face of the supporting arm is provided with a protruding reinforcing rib, the bottom face of the supporting arm is downwardly protruded to form a closed support step, and the support step and the reinforcing rib are attached to the bottom of the connecting groove.

[0009] With reference to the first aspect, in a possible implementation manner, the connecting portion is embedded with an inner core framework, the inner core framework surrounds the connecting groove and the recess, and extends into the column body.

[0010] With reference to the first aspect, in a possible implementation manner, the connecting groove is provided with a positioning boss on an inner wall opposite to the slot opening, and the supporting arm is provided with a positioning groove matched with the positioning boss.

[0011] With reference to the first aspect, in a possible implementation manner, an inner wall of the main spring framework is provided with a limiting step, a lower flange edge of the main spring rubber body is provided with an abutting surface matched with the limiting step, the flow channel assembly edge is embedded in an annular groove in an inner wall of the leather cup, and the leather cup is embedded in the main spring framework and abuts against the lower flange edge at an upper end surface thereof.

[0012] With reference to the first aspect, in a possible implementation manner, the main spring rubber body and the main spring framework are limited in the bridge type support.

[0013] With reference to the first aspect, in a possible implementation manner, an inner wall of the bridge type support is further provided with a limiting groove, and the main spring framework is provided with a flash extending into the limiting groove.

[0014] The liquid seal suspension provided by the present application has the beneficial effects compared with the prior art that the liquid inlet hole is directly arranged on the main spring rubber body, the steel ball is interference fitted in the liquid inlet hole, the hard steel ball is matched with the elastic main spring rubber body to form a first steel ball anti-disengagement structure, and the upper end of the supporting arm blocks the liquid inlet hole to form a second steel ball anti-disengagement structure. The first and second steel ball anti-disengagement structures are as follows. On the one hand, the size of the steel ball is originally larger than that of the liquid inlet hole, the steel ball is interference fitted in the liquid inlet hole, and the steel ball needs to be hit into or pressed into the liquid inlet hole by using a tool. The interference fitting is a close fitting, which can improve the close fitting of the steel ball and the liquid inlet hole, the supporting arm blocks the liquid inlet hole, and the steel ball is difficult to disengage from the liquid inlet hole, and the leakage of the liquid sealed in the liquid chamber from the liquid inlet hole is avoided. On the other hand, the steel ball is hit into the liquid inlet hole, the steel ball abuts against the main spring rubber body, the main spring rubber body forms a groove covering the steel ball at the position contacted by the steel ball, and the main spring rubber body around the steel ball is not abutted and is in a natural stretching state. Therefore, the steel ball is firmly embedded in the liquid inlet hole due to the limiting of the groove and the elastic abutment of the main spring rubber body, and the problem of liquid leakage leading to the failure of the liquid seal suspension is avoided. On the other hand, the main spring rubber body is a main component of the liquid seal suspension and has a large volume. The rubber structure is dense, and the elasticity of the main spring rubber body is not easy to fail even in a long-term on-vehicle use. The elasticity is reliable and stable, the durability of the elastic force of the main spring rubber body on the steel ball is ensured, the problem of the disengagement of the steel ball is avoided, and the problem of liquid leakage leading to poor working performance of the liquid seal suspension is avoided.

[0015] The present application directly arranges the liquid inlet hole on the main spring rubber body, the structure is simple, the installation of the steel ball is simple and convenient, the cooperation of the hard steel ball and the elastic main spring rubber body and the blocking of the supporting arm on the liquid inlet hole avoid the problems of the disengagement of the steel ball and the leakage of the liquid, and the working reliability of the liquid seal suspension is improved.

[0016] In the second aspect, the present application also provides a vehicle comprising the liquid seal suspension.

[0017] The vehicle provided by the present application can avoid the problem of the disengagement of the steel ball, improve the reliability of the liquid seal, and ensure the reliability of the working performance of the liquid seal suspension due to the adoption of the anti-disengagement structure directly cooperating the steel ball and the main spring rubber body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The liquid seal suspension provided by the present application has the beneficial effects compared with the prior art that the liquid inlet hole is directly arranged on the main spring rubber body, the steel ball is interference fitted in the liquid inlet hole, the hard steel ball is matched with the elastic main spring rubber body to form a first steel ball anti-disengagement structure, and the upper end of the supporting arm blocks the liquid inlet hole to form a second steel ball anti-disengagement structure. The first and second steel ball anti-disengagement structures are as follows. On the one hand, the size of the steel ball is originally larger than that of the liquid inlet hole, the steel ball is interference fitted in the liquid inlet hole, and the steel ball needs to be hit into or pressed into the liquid inlet hole by using a tool. The interference fitting is a close fitting, which can improve the close fitting of the steel ball and the liquid inlet hole, the supporting arm blocks the liquid inlet hole, and the steel ball is difficult to disengage from the liquid inlet hole, and the leakage of the liquid sealed in the liquid chamber from the liquid inlet hole is avoided. On the other hand, the steel ball is hit into the liquid inlet hole, the steel ball abuts against the main spring rubber body, the main spring rubber body forms a groove covering the steel ball at the position contacted by the steel ball, and the main spring rubber body around the steel ball is not abutted and is in a natural stretching state. Therefore, the steel ball is firmly embedded in the liquid inlet hole due to the limiting of the groove and the elastic abutment of the main spring rubber body, and the problem of liquid leakage leading to the failure of the liquid seal suspension is avoided. On the other hand, the main spring rubber body is a main component of the liquid seal suspension and has a large volume. The rubber structure is dense, and the elasticity of the main spring rubber body is not easy to fail even in a long-term on-vehicle use. The elasticity is reliable and stable, the durability of the elastic force of the main spring rubber body on the steel ball is ensured, the problem of the disengagement of the steel ball is avoided, and the problem of liquid leakage leading to poor working performance of the liquid seal suspension is avoided. The present application directly arranges the liquid inlet hole on the main spring rubber body, the structure is simple, the installation of the steel ball is simple and convenient, the cooperation of the hard steel ball and the elastic main spring rubber body and the blocking of the supporting arm on the liquid inlet hole avoid the problems of the disengagement of the steel ball and the leakage of the liquid, and the working reliability of the liquid seal suspension is improved. Figure 1 ;

[0019] Figure 2 The liquid seal suspension provided by the present application has the beneficial effects compared with the prior art that the liquid inlet hole is directly arranged on the main spring rubber body, the steel ball is interference fitted in the liquid inlet hole, the hard steel ball is matched with the elastic main spring rubber body to form a first steel ball anti-disengagement structure, and the upper end of the supporting arm blocks the liquid inlet hole to form a second steel ball anti-disengagement structure. The first and second steel ball anti-disengagement structures are as follows. On the one hand, the size of the steel ball is originally larger than that of the liquid inlet hole, the steel ball is interference fitted in the liquid inlet hole, and the steel ball needs to be hit into or pressed into the liquid inlet hole by using a tool. The interference fitting is a close fitting, which can improve the close fitting of the steel ball and the liquid inlet hole, the supporting arm blocks the liquid inlet hole, and the steel ball is difficult to disengage from the liquid inlet hole, and the leakage of the liquid sealed in the liquid chamber from the liquid inlet hole is avoided. On the other hand, the steel ball is hit into the liquid inlet hole, the steel ball abuts against the main spring rubber body, the main spring rubber body forms a groove covering the steel ball at the position contacted by the steel ball, and the main spring rubber body around the steel ball is not abutted and is in a natural stretching state. Therefore, the steel ball is firmly embedded in the liquid inlet hole due to the limiting of the groove and the elastic abutment of the main spring rubber body, and the problem of liquid leakage leading to the failure of the liquid seal suspension is avoided. On the other hand, the main spring rubber body is a main component of the liquid seal suspension and has a large volume. The rubber structure is dense, and the elasticity of the main spring rubber body is not easy to fail even in a long-term on-vehicle use. The elasticity is reliable and stable, the durability of the elastic force of the main spring rubber body on the steel ball is ensured, the problem of the disengagement of the steel ball is avoided, and the problem of liquid leakage leading to poor working performance of the liquid seal suspension is avoided. The present application directly arranges the liquid inlet hole on the main spring rubber body, the structure is simple, the installation of the steel ball is simple and convenient, the cooperation of the hard steel ball and the elastic main spring rubber body and the blocking of the supporting arm on the liquid inlet hole avoid the problems of the disengagement of the steel ball and the leakage of the liquid, and the working reliability of the liquid seal suspension is improved. Figure 2 ;

[0020] Figure 3 This is a bottom view schematic diagram of the liquid seal suspension structure provided in an embodiment of the present invention;

[0021] Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle;

[0022] Figure 5 For along Figure 3 Cross-sectional view of the middle BB line;

[0023] Figure 6 An exploded structural diagram of the liquid-sealed suspension provided in an embodiment of the present invention (with the bridge support removed).

[0024] Figure 7 A three-dimensional structural diagram of the liquid seal suspension provided in an embodiment of the present invention (with the bridge bracket removed).

[0025] Figure 8 A bottom view of the liquid seal suspension structure provided in an embodiment of the present invention (with the bridge bracket removed).

[0026] Figure 9 For along Figure 8 Cross-sectional view of the CC line;

[0027] Figure 10 A bottom view of the liquid seal suspension structure provided in an embodiment of the present invention (with bridge bracket and support arm removed).

[0028] Figure 11 For along Figure 10 Cross-sectional view of the DD line;

[0029] Figure 12 This is a three-dimensional structural diagram of the main spring rubber body provided in an embodiment of the present invention;

[0030] Figure 13 This is a top view of the main spring rubber body provided in an embodiment of the present invention;

[0031] Figure 14 For along Figure 13 Cross-sectional view of the EE line;

[0032] Figure 15 A three-dimensional structural diagram of the inner core skeleton provided in an embodiment of the present invention. Figure 1 ;

[0033] Figure 16 A three-dimensional structural diagram of the inner core skeleton provided in an embodiment of the present invention. Figure 2 ;

[0034] Figure 17 This is a side view of the inner core skeleton provided in an embodiment of the present invention;

[0035] Figure 18 for along Figure 17 the line F-F of the sectional structure view;

[0036] Figure 19 for the flow channel assembly provided by the embodiment of the present application is a perspective structural schematic view (the front and back structures are the same);

[0037] Figure 20 for the skin bowl provided by the embodiment of the present application is a perspective structural schematic Figure 1 ;

[0038] Figure 21 for the skin bowl provided by the embodiment of the present application is a perspective structural schematic Figure 2 ;

[0039] Figure 22 for the skin bowl provided by the embodiment of the present application is a top view structural schematic view;

[0040] Figure 23 for along Figure 22 the line H-H of the sectional structure view;

[0041] Figure 24 for the main spring skeleton provided by the embodiment of the present application is a perspective structural schematic Figure 1 ;

[0042] Figure 25 for the main spring skeleton provided by the embodiment of the present application is a perspective structural schematic Figure 2 ;

[0043] Figure 26 for the main spring skeleton provided by the embodiment of the present application is a top view structural schematic view;

[0044] Figure 27 for along Figure 26 the line K-K of the sectional structure view;

[0045] Figure 28 for the bridge type support provided by the embodiment of the present application is a perspective structural schematic Figure 1 ;

[0046] Figure 29 for the bridge type support provided by the embodiment of the present application is a perspective structural schematic Figure 2 ;

[0047] Figure 30 for the armrest provided by the embodiment of the present application is a perspective structural schematic view (bottom view);

[0048] Explanation of the reference signs:

[0049] 1, bridge support; 11, limiting groove; 2, vehicle body connecting support; 3, main spring rubber body; 31, inner core framework; 32, liquid inlet hole; 33, connecting groove; 34, column; 35, groove; 36, upper flange; 37, lower flange; 38, positioning boss; 39, radial rib; 4, main spring framework; 41, flash; 42, limiting step; 5, support arm; 51, anti-falling stop block; 52, positioning groove; 53, reinforcing rib; 54, supporting step; 6, steel ball; 7, upper liquid chamber; 8, lower liquid chamber; 9, flow channel assembly; 91, upper flow channel plate; 92, decoupling film; 93, lower flow channel plate; 94, communication hole; 10, leather cup; 101, leather cup framework; 102, leather cup body. DETAILED DESCRIPTION

[0050] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0051] In the description of the present application, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower" and the like appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0052] Please refer to Figures 1 to 30 , now the liquid seal suspension provided by the present application will be described. The liquid seal suspension comprises a main spring rubber body 3, a support arm 5, a main spring framework 4, a flow channel assembly 9 and a leather cup 10; the flow channel assembly 9 is arranged between the main spring rubber body 3 and the leather cup 10, and forms an upper liquid chamber 7 with the upper main spring rubber body 3 and a lower liquid chamber 8 with the lower leather cup 10; the main spring rubber body 3 is provided with a liquid inlet hole 32 communicating with the upper liquid chamber 7, and the liquid inlet hole 32 is provided with a steel ball 6 in interference fit, and the interference fit between the main spring rubber body 3 and the steel ball 6 forms a first level steel ball 6 anti-falling structure; the support arm 5 is arranged at the upper end of the main spring rubber body 3 and blocks the liquid inlet hole 32, forming a second level steel ball 6 anti-falling structure; the main spring framework 4 covers the outside of the main spring rubber body 3, the flow channel assembly 9 and the leather cup 10, connecting the main spring rubber body 3, the flow channel assembly 9 and the leather cup 10 together.

[0053] The liquid seal suspension provided by the present application has the liquid inlet hole 32 arranged directly on the main spring rubber body 3, and the steel ball 6 is in interference fit in the liquid inlet hole 32, and the hard steel ball 6 cooperates with the elastic main spring rubber body 3 to form a first level steel ball 6 anti-falling structure. The effect of this first level steel ball 6 anti-falling structure is that:

[0054] In the first aspect, the size of the steel ball 6 is originally larger than the liquid inlet hole 32, the steel ball 6 is in interference fit with the liquid inlet hole 32, and the steel ball 6 needs to be punched into or pressed into the liquid inlet hole 32 by using a tool. The interference fit is a close fit, which can improve the close fit of the steel ball 6 with the liquid inlet hole 32, the steel ball 6 is difficult to be pulled out of the liquid inlet hole 32, and the leakage of the liquid sealed in the liquid chamber 7 from the liquid inlet hole 32 is avoided.

[0055] In the second aspect, the steel ball 6 is in soft and hard fit with the elastic main spring rubber body 3. After the steel ball 6 is punched into the liquid inlet hole 32, the steel ball 6 abuts against the main spring rubber body 3, the main spring rubber body 3 forms an envelope cavity covering the steel ball 6 at the contact position of the steel ball 6, and the main spring rubber body 3 around the steel ball 6 is not abutted and naturally stretches to wrap the steel ball 6. Therefore, the steel ball 6 is firmly embedded in the liquid inlet hole 32 due to the limiting of the envelope cavity and the elastic abutment of the main spring rubber body 3, and cannot be pulled out of the liquid inlet hole 32, thereby avoiding the problem that the liquid leakage causes the liquid seal suspension to fail.

[0056] In the third aspect, the main spring rubber body 3 is a main component of the liquid seal suspension and has a large volume. The rubber structure is dense, and the elasticity of the main spring rubber body 3 is not easy to fail even in a long-term on-vehicle use process. The elasticity is reliable and stable, and the durability of the elastic force applied by the main spring rubber body 3 to the steel ball 6 is ensured. The problems of the steel ball 6 being pulled out and the liquid leakage causing poor working performance of the liquid seal suspension are avoided, and the service life of the liquid seal suspension is improved.

[0057] In the fourth aspect, the supporting arm 5 is fixedly arranged at the upper end of the main spring rubber body 3 and blocks the liquid inlet hole 32, and constitutes a secondary steel ball 6 anti-pulling-out structure. When the supporting arm 5 is fixed with the main spring rubber body 3, the liquid inlet hole 32 is directly blocked, and the path for the steel ball 6 to be pulled out is completely blocked. The steel ball 6 is always unable to be pulled out through the cooperation of the primary anti-pulling-out structure and the secondary anti-pulling-out structure, the reliability of the liquid seal of the liquid seal suspension is ensured, and the reliability of the working performance of the liquid seal suspension is ensured.

[0058] The liquid inlet hole 32 is directly arranged on the main spring rubber body 3, the structure is simple, the installation of the steel ball 6 is simple and convenient, the cooperation of the hard steel ball 6 and the elastic main spring rubber body 3 avoids the problems of the steel ball 6 being pulled out and the liquid being leaked, and the working reliability of the liquid seal suspension is improved.

[0059] In the embodiment, as shown in Figure 11 and Figure 19As shown, the flow channel assembly 9 is a structure commonly used in liquid seal suspension, which comprises an upper flow channel plate 91, a lower flow channel plate 93 and a decoupling film 92. The upper and lower surfaces of the decoupling film 92 are designed to have convex structures, which can reduce the contact area and avoid the occurrence of abnormal sound when the liquid flows. The flow channel assembly 9 and the main spring rubber body 3 form the upper liquid chamber 7, and the flow channel assembly 9 and the skin cup 10 form the lower liquid chamber 8. The flow channel assembly 9 is provided with a communication hole 94 which communicates the upper liquid chamber 7 and the lower liquid chamber 8. Under different working conditions, the liquid flows between the lower liquid chamber 8 and the upper liquid chamber 7, which plays a role in adjusting the dynamic stiffness and damping hysteresis angle.

[0060] In some embodiments, as shown in Figures 1 to 11 As shown, the upper end of the main spring rubber body 3 is provided with a connecting portion, the connecting portion is provided with a connecting groove 33 into which the supporting arm 5 extends, and the liquid inlet hole 32 is arranged at the bottom of the connecting groove 33. In this embodiment, the connecting portion is only a name defined for the convenience of description. In fact, the connecting portion is integrally vulcanized and formed with the main spring rubber body 3. In order to improve the reliability of the connection between the supporting arm 5 and the main spring rubber body 3, and to avoid the separation of the supporting arm 5 and the main spring rubber body 3 during long-term use, one end of the supporting arm 5 is inserted into the main spring rubber body 3 and is press-fitted together with the main spring rubber body 3, thereby improving the reliability of long-term connection between the two.

[0061] After the supporting arm 5 is inserted into the connecting groove 33, the end of the supporting arm 5 is wrapped by the main spring rubber body 3, and the bottom surface of the supporting arm 5 can block the liquid inlet hole 32. This connection mode of the supporting arm 5 and the main spring rubber body 3 not only realizes the elastic connection between the two and improves the damping performance of the liquid seal suspension, but also improves the reliability of the connection between the two, and the liquid inlet hole 32 can be blocked without complex structure, which is simple in structure, convenient and reliable in connection, and has multiple beneficial effects.

[0062] In order to improve the reliability of the connection between the supporting arm 5 and the main spring rubber body 3, a anti-falling stop block 51 is arranged on the upper surface of the supporting arm 5 (as shown in Figure 6 and Figure 7 ), wherein the top wall of the connecting groove 33 is provided with a window, the supporting arm 5 is not covered by the main spring rubber body 3 at the part of the window, and the anti-falling stop block 51 is in abutment with the side wall of the window in the window, thereby preventing the supporting arm 5 from being pulled out of the connecting groove 33.

[0063] In some embodiments, as shown in Figure 4 , Figure 5 , Figures 9 to 14As shown, the bottom of the connecting groove 33 is provided with a groove 35, the groove 35 is provided with a column 34, and the liquid inlet hole 32 is arranged on the column 34. The groove 35 is arranged in the connecting groove 33, that is, on the main spring rubber body 3, so that the area of the main spring rubber body 3 directly contacting the support arm 5 can be reduced, a buffer cavity is formed between the main spring rubber body 3 and the support arm 5, the elastic connection between the support arm 5 and the main spring rubber body 3 is improved, and vibration damping and buffering are facilitated; at the same time, the groove 35 arranged on the main spring rubber body 3 also helps to reduce the weight of the main spring rubber body 3, and contributes to the weight reduction of the liquid-sealed suspension as a whole.

[0064] Since the groove 35 is arranged on the main spring rubber body 3, and the main spring rubber body 3 is provided with the liquid inlet chamber 7, which is a hollow structure, the thickness of the groove 35 part will inevitably be reduced. Here, the liquid inlet hole 32 is not enough to support the tightness of the steel ball 6, therefore, by arranging the column 34 at the central position of the groove 35, and arranging the liquid inlet hole 32 on the column 34, the length of the liquid inlet hole 32 is ensured, so that the steel ball 6 is not easy to fall out of the liquid inlet hole 32, thereby ensuring the reliability of the sealing of the steel ball 6.

[0065] In order to improve the structural strength of the column 34 and the groove 35 part, radial ribs 39 are arranged around the column 34 in the groove 35, as shown in Figure 10 and Figure 13 .

[0066] It should be noted that the support arm 5 is in the connecting groove 33, and at least the upper end face of the column 34 is blocked, or the bottom surface of the support arm 5 is attached to the four sides of the groove 35, and the support arm 5 forms a seal with the groove 35, and the distance between the support arm 5 and the upper end of the column 34 should be less than the radius of the steel ball 6, so as to block the steel ball 6 from falling out of the liquid inlet hole 32.

[0067] In some embodiments, as shown in Figure 4 , Figure 5 , Figure 9 , Figure 11 , Figure 14 , the upper end face of the column 34 is flush with the bottom surface of the connecting groove 33; as shown in Figure 30 , the bottom surface of the support arm 5 is provided with a protruding reinforcing rib 53, and the bottom surface of the support arm 5 is downwardly protruding to form a closed support step 54, and the support step 54 and the reinforcing rib 53 are attached to the bottom of the connecting groove 33. The structure of the support arm 5 is further refined in this example, mainly to respond to the demand for lightweight vehicles while ensuring that the support arm 5 blocks the liquid inlet hole 32 and ensures its own strength.

[0068] Specifically, first, by supporting the step 54, the thickness of the connecting end of the supporting arm 5 and the main spring rubber body 3 is reduced, the lightweight design of the supporting arm 5 is realized, the weight of the supporting arm 5 is reduced, and the manufacturing cost is reduced; second, the bottom surface of the connecting end of the supporting arm 5 and the main spring rubber body 3 is provided with a closed supporting step 54, which has a sealing effect on the recess 35 in the connecting groove 33 and the liquid inlet hole 32 on the column body 34, and avoids the steel ball 6 from falling out; third, since the supporting arm 5 is provided with the supporting step 54, a larger air slot is formed in the supporting step 54, which will weaken the structural strength of the supporting arm 5, therefore, the reinforcing rib 53 is arranged in the supporting step 54, which is used to ensure the strength of the supporting arm 5, and ensure the reliability of the connection and the reliability of the force transmission.

[0069] Among them, the reinforcing rib 53 can be located above the column body 34, and tightly abuts or maintains a gap smaller than the radius of the steel ball 6 on the upper end of the column body 34, to prevent the steel ball 6 from falling out.

[0070] Optionally, the column body 34 is a circular truncated cone, a prismatic truncated cone or a circular cylinder, and the liquid inlet hole 32 is arranged on the center line of the column body 34.

[0071] Optionally, the recess 35 is a circular truncated cone with a large upper part and a small lower part; the shape of the connecting groove 33 is adapted to the connecting end of the supporting arm 5 and the main spring rubber body 3.

[0072] In some embodiments, as shown in Figure 4 , Figure 5 , Figure 9 , Figure 11 , Figures 14 to 18 The connecting part is embedded with an inner core framework 31, the inner core framework 31 surrounds the connecting groove 33 and the recess 35, and extends into the column body 34. The inner core framework 31 improves the rigidity of the main spring rubber body 3, especially in the connecting part connected by the supporting arm 5, greatly improves the strength of the connection between the supporting arm 5 and the main spring rubber body 3, and prevents the problem of fracture between the supporting arm 5 and the main spring rubber body 3 in the long-term cooperation process. The shape of the inner core framework 31 is adapted to the connecting groove 33 and the recess 35, and is wrapped around the connecting end of the supporting arm 5. The inner core framework 31 is formed by stamping sheet metal and is vulcanized with the main spring rubber body 3 as a whole. The inner core framework 31 extends into the column body 34, which also strengthens the strength of the position of the liquid inlet hole 32, and ensures the reliability of the cooperation between the steel ball 6 and the liquid inlet hole 32.

[0073] Among them, the inner core framework 31 is provided with a connecting hole or a filling groove, so as to facilitate the embedding of the rubber and improve the reliability of the connection between the inner core framework 31 and the main spring rubber body 3.

[0074] In some embodiments, as shown in Figure 6 and Figure 30As shown, the inner wall opposite to the connecting groove 33 is provided with a positioning boss 38, and the supporting arm 5 is provided with a positioning groove 52 matched with the positioning boss 38. Through the cooperation of the positioning boss 38 and the positioning groove 52, the firmness of the connection between the supporting arm 5 and the main spring rubber body 3 can be improved, and the risk of the supporting arm 5 being separated from the main spring rubber body 3 under different working load vibrations can be reduced.

[0075] In order to improve the reliability of the connection of the supporting arm 5, uneven convex ribs or long grooves are respectively arranged on the opposite two side walls of the connecting groove 33 of the main spring rubber body 3. Of course, the convex ribs are accompanied by the existence of the long grooves. This structure not only improves the firmness of the connection of the supporting arm 5, but also has the effects of buffering, vibration reduction and weight reduction.

[0076] In some embodiments, as shown in Figure 4 , Figure 5 , Figure 9 , Figure 11 , Figures 24 to 27 As shown, the inner wall of the main spring framework 4 is provided with a limiting step 42, the lower end of the main spring rubber body 3 is provided with a lower flange edge 37 abutting against the limiting step 42, the edge of the flow channel assembly 9 is embedded in the annular groove in the inner wall of the skin bowl 10, the skin bowl 10 is embedded in the main spring framework 4, and the upper end face thereof abuts against the lower flange edge 37.

[0077] The main spring framework 4 is arranged outside the main spring rubber body 3 and at the lower part of the main spring rubber body 3, which strengthens the strength of the main spring rubber body 3, and also connects the main spring rubber body 3, the skin bowl 10 and the flow channel assembly 9 together.

[0078] The main spring framework 4 is made of nylon material, which is light in weight, so that the weight of the liquid seal suspension assembly is further reduced, which can better meet the current lightweight design concept of suspension. As shown in Figures 20 to 23 The structure of the skin bowl 10 includes a skin bowl body 102 and a skin bowl framework 101. The skin bowl 10 is a commonly used structure in liquid seal suspension, and is pressed into the main spring framework 4 through interference fit to form a closed lower liquid chamber 8 with the flow channel assembly 9 above. During driving, the skin bowl 10 moves together with the flow of liquid, so that the performance of the suspension reaches the extreme.

[0079] The limiting step 42 in the main spring framework 4 limits the upward movement of the main spring rubber body 3. At the same time, the upper end face of the skin bowl 10, i.e. the rubber part of the skin bowl 10, abuts against the lower flange edge 37 of the main spring rubber body 3, so that the upper liquid chamber 7 and the lower liquid chamber 8 are well sealed. The flow channel assembly 9 is tightly fitted and installed in the annular groove of the skin bowl body 102 (i.e. the rubber part of the skin bowl 10), which is not only convenient to install, but also achieves the sealing effect.

[0080] As shown in Figure 9 , Figures 11 to 14 ,As shown, the upper end surface of the main spring framework 4 abuts against the upper flange edge 36 of the middle part of the outer surface of the main spring rubber body 3, so that the main spring rubber body 3 also plays a role of upper limiting for the main spring framework 4.

[0081] As can be seen, in the present application, the vulcanization connection between the main spring rubber body 3 and the main spring framework 4, the matching connection between the flow channel assembly 9 and the skin cup 10, the matching connection between the main spring framework 4 and the skin cup 10, and the matching between the skin cup 10 and the main spring rubber body 3 are all achieved by the soft and hard matching of the material quality, realizing multiple effects such as close connection, reliable sealing, reliable limiting, without additional redundant components, simple structure, and convenient assembly and disassembly.

[0082] As shown in the liquid seal suspension provided by the embodiment of the present application, Figures 1 to 4 , Figure 28 and Figure 29 , the liquid seal suspension further comprises a bridge support 1, and the main spring rubber body 3 and the main spring framework 4 are limited in the bridge support 1. The bridge support 1 has a hole or a cavity, and the bridge support 1 serves as an outer shell of the main spring rubber body 3 and the main spring framework 4. The upper end of the main spring rubber body 3 abuts against the top wall of the bridge support 1, and the lower end surface of the main spring framework 4 abuts against the bottom of the bridge support 1. Meanwhile, the lower end surface of the skin cup 10 also partially abuts against the bottom of the bridge support 1. The bridge support 1 ensures the reliable connection position relationship of the main spring rubber body 3, the main spring framework 4 and the skin cup 10.

[0083] As shown in the liquid seal suspension provided by the embodiment of the present application, Figure 28 and Figure 29 , a limiting groove 11 is further arranged on the inner wall of the bridge support 1, and a flash 41 of the main spring framework 4 extends into the limiting groove 11, thereby ensuring the firmness of the matching of the main spring framework 4 and the bridge support 1.

[0084] The bridge support 1 and the support arm 5 are both cast into shape, and the bridge support 1 is also provided with a weight-reducing hole or a weight-reducing groove, thereby reducing the weight and cost of the bridge support 1 and meeting the requirement of lightweight design.

[0085] In order to improve the strength of the connection of the main spring rubber body 3 and the bridge support 1, a plurality of convex points or uneven ribs are arranged at the matching part of the main spring rubber body 3 and the bridge support 1.

[0086] As shown in the liquid seal suspension provided by the embodiment of the present application, Figures 1 to 4 , the liquid seal suspension further comprises a vehicle body connecting support 2, and the vehicle body connecting support 2 is a sheet metal part, which is light in weight and simple and convenient to manufacture.

[0087] In the above embodiments, the description of each embodiment has its own emphasis, and the part not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0088] Based on the same inventive concept, the embodiment of the present application further provides a vehicle comprising the liquid seal suspension.

[0089] The vehicle provided by the application can avoid the problem of the steel ball 6 falling off, improve the reliability of the liquid seal, and further ensure the reliability of the working performance of the liquid seal suspension.

[0090] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid-encapsulated suspension, characterized by, The application relates to a main spring rubber body (3), a supporting arm (5), a main spring framework (4), a flow channel assembly (9) and a leather cup (10). The flow channel assembly (9) is arranged between the main spring rubber body (3) and the leather cup (10), and forms an upper liquid chamber (7) with the upper main spring rubber body (3) and a lower liquid chamber (8) with the lower leather cup (10). The main spring rubber body (3) is provided with a liquid inlet hole (32) communicating with the upper liquid chamber (7), and the liquid inlet hole (32) is provided with a steel ball (6) in interference fit; the interference fit between the main spring rubber body (3) and the steel ball (6) forms a primary steel ball anti-falling structure. The supporting arm (5) is arranged at the upper end of the main spring rubber body (3) and blocks the liquid inlet hole (32), thereby forming a secondary steel ball anti-falling structure; the main spring framework (4) is arranged outside the main spring rubber body (3), the flow channel assembly (9) and the leather cup (10). The upper end of the main spring rubber body (3) is provided with a connecting portion, the connecting portion is provided with a connecting groove (33) into which the supporting arm (5) extends, and the liquid inlet hole (32) is arranged at the bottom of the connecting groove (33). The bottom of the connecting groove (33) is provided with a groove (35), the groove (35) is provided with a column (34), and the liquid inlet hole (32) is arranged on the column (34). The supporting arm (5) seals the groove (35), and a buffer cavity is formed between the main spring rubber body (3) and the supporting arm (5); meanwhile, the distance between the supporting arm (5) and the upper end of the column (34) is smaller than the radius of the steel ball (6), so that the steel ball (6) is prevented from falling out of the liquid inlet hole (32). The upper end surface of the column (34) is flush with the bottom surface of the connecting groove (33); the bottom surface of the supporting arm (5) is provided with a protruding reinforcing rib (53), the bottom surface of the supporting arm (5) is downwardly protruded to form a closed support step (54), the support step (54) and the reinforcing rib (53) are attached to the bottom of the connecting groove (33); the support step (54) has a sealing effect on the groove (35) in the connecting groove (33) and the liquid inlet hole (32) on the column (34), thereby preventing the steel ball (6) from falling out. The connecting portion is embedded with an inner core framework (31), the inner core framework (31) surrounds the connecting groove (33) and the groove (35) and extends into the column (34). The inner wall of the connecting groove (33) opposite to the groove opening is provided with a positioning boss (38), and the supporting arm (5) is provided with a positioning groove (52) matched with the positioning boss (38).

2. The liquid-encapsulated suspension of claim 1 wherein, The inner wall of the main spring framework (4) is provided with a limiting step (42), the lower end of the main spring rubber body (3) is provided with a lower flange edge (37) abutting against the limiting step (42), the edge of the flow channel assembly (9) is embedded in an annular groove in the inner wall of the leather cup (10), and the leather cup (10) is embedded in the main spring framework (4) and the upper end surface thereof abuts against the lower flange edge (37).

3. The liquid-encapsulated suspension of claim 1 wherein, ​ 4. The liquid-encapsulated suspension of claim 1 wherein, Also included is a bridge support (1), wherein the main spring rubber body (3) and the main spring skeleton (4) are limited in the bridge support (1).

5. The liquid-encapsulated suspension of claim 4 wherein, The bridge support (1) is further provided with a limiting groove (11) on the inner wall, and the main spring skeleton (4) is provided with a flash (41) extending into the limiting groove (11).

6. A vehicle characterized by comprising: A liquid-encapsulated suspension comprising the main spring rubber body (3) and the main spring skeleton (4) as claimed in any one of claims 1-5.

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