CN220622581U - Axial hydraulic bushing with composite vulcanization integrated runner assembly - Google Patents

Abstract

The utility model discloses an axial hydraulic bushing with a composite vulcanization integrated runner assembly, and the technical field of automobile parts, comprising an assembly housing, wherein an upper main spring assembly, a runner assembly and a lower main spring assembly are sequentially arranged in the assembly housing from top to bottom, an upper liquid chamber is arranged between the upper main spring assembly and the runner assembly, and a lower liquid chamber is arranged between the lower main spring assembly and the runner assembly; the flow channel assembly is internally provided with a planar spiral flow channel body which is used for communicating the upper liquid chamber and the lower liquid chamber. The utility model integrates the upper and lower plates of the assembled runner through rubber vulcanization, ensures the characteristics of the runner, avoids the defects of damping fluid leakage and the like when the hydraulic bushing is excited, and simultaneously can design the vulcanized rubber structure into various required structures, thereby better forming the required liquid chamber cavities by the upper and lower main springs.

Description

Axial hydraulic bushing with composite vulcanization integrated runner assembly

Technical Field

The utility model belongs to the technical field of automobile parts, and particularly relates to an axial hydraulic bushing with a composite vulcanization integrated runner assembly.

Background

With the development of the automobile industry, automobiles are increasingly popular, and the requirements of people on automobile riding experience are further expanded from early-stage operation stability to riding comfort and the like. Especially in new energy automobiles without this vibration source of conventional fuel power assemblies, vibration excitation from the road surface becomes a primary factor affecting ride comfort. This also places higher demands on the NVH performance of the automotive suspension system. The bushing is an important part for determining the steering stability and smoothness in an automobile suspension system, and has very important significance for carrying out deep research on the part. Compared with the linear dynamic characteristic of the traditional rubber bushing, the hydraulic bushing has nonlinear dynamic characteristic, can provide a larger damping hysteresis angle in a certain frequency range, and has excellent vibration damping effect; or provides smaller dynamic stiffness characteristics in a certain frequency range, and reduces the vibration transmission rate to play a role in noise reduction. It is these good performance properties that make hydraulic bushings more and more widely used in automobiles.

The traditional hydraulic bushing is limited by the structure of the bushing, and the hydraulic resistance direction is generally radial, so that the hydraulic bushing is also greatly limited in the use position. The target vibration source of the auxiliary frame bushing or other bushing damping systems requiring the key consideration of axial hydraulic characteristics not only has resonance of front-back flexibility of the suspension, but also comprises unsprung resonance in the up-down direction. At present, no axial hydraulic bushing exists in the true sense (patent documents of an axial hydraulic bushing of a subframe, CN201810770946.4 and an axial hydraulic bushing of a rear subframe and a rear subframe assembly of an automobile, CN201921179646.5 disclose an axial hydraulic bushing, but a hydraulic main body part of the axial hydraulic bushing is arranged outside a main spring of the bushing, and only a throttle plate is arranged without a runner, so that damping force is generated essentially through viscous friction of liquid, the damping force does not belong to the principle of resonance with a liquid column, a damping angle which can be provided is limited, and a scene of wide application is lacking). While I have focused on the structural development of hydraulic bushings in recent years, it is recognized in the technological communications of many host factories that more and more host factories are beginning to pay attention to and pay attention to the dynamic characteristics requirements of the bushing in the axial direction. Under the background, the axial hydraulic bushing structure in the true sense needs to be invented, and has the characteristics of providing excellent axial liquid resistance characteristics, simultaneously taking the structure and manufacturing process of the product into consideration. If the axial hydraulic bushing is concerned, the structural arrangement of the bushing is considered, and besides the structural arrangement of the bushing, the structure of the flow channel and the structure of the liquid chamber are mainly considered, so that the liquid chamber is ensured to be axially arranged, and damping liquid can flow into the liquid chamber through the flow channel.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide an axial hydraulic bushing with a composite vulcanization integrated runner assembly, and the liquid chamber runner part of the bushing is completely integrated into a main spring main body by utilizing a plurality of modularized assemblies, so that the hydraulic characteristics required by the axial direction of the bushing are better realized.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the axial hydraulic bushing with the composite vulcanizing integrated runner assembly comprises an assembly outer cover, wherein an upper main spring assembly, a runner assembly and a lower main spring assembly are sequentially arranged in the assembly outer cover from top to bottom, an upper liquid chamber is arranged between the upper main spring assembly and the runner assembly, and a lower liquid chamber is arranged between the lower main spring assembly and the runner assembly; the flow channel assembly is internally provided with a planar spiral flow channel body which is used for communicating the upper liquid chamber and the lower liquid chamber.

On the basis of the technical scheme, the flow channel assembly comprises an outer tube and a flow channel plate body; the outer tube is matched with the assembly outer cover and is inserted into the assembly outer cover; the outside vulcanization of runner plate body is wrapped up with the rubber body, and the rubber body outwards extends and is connected with the inside wall vulcanization of outer tube.

On the basis of the technical scheme, the middle part of the flow passage plate body is provided with a central hole for the lower main spring assembly to pass through; the outer side edge of the flow passage plate body is provided with an anti-rotation groove.

On the basis of the technical scheme, the runner plate body comprises an upper runner plate and a lower runner plate which are mutually buckled; an upper plane spiral groove and a bolt are arranged on the bottom surface of the upper runner plate, and an upper connecting hole penetrating the upper runner plate is arranged at the outer side end of the upper plane spiral groove; the top surface of runner board down is provided with the plane helicla flute down and with the jack of bolt looks adaptation, and the inboard end of plane helicla flute down is provided with the lower connecting hole that link up runner board down.

On the basis of the technical scheme, the upper runner plate and the lower runner plate are of annular structures, and a convex ring is arranged at the inner circular edge of the top surface of the upper runner plate.

On the basis of the technical scheme, the lower end of the assembly outer cover is provided with a edging part.

On the basis of the technical scheme, the lower main spring assembly comprises a lower inner tube, the upper end of the lower inner tube penetrates through the runner assembly and then is inserted into the upper main spring assembly, and the lower end of the lower inner tube is provided with first vulcanized rubber matched with the assembly outer cover.

On the basis of the technical scheme, the upper main spring assembly comprises an upper inner tube in interference fit with the lower inner tube, and second vulcanized rubber matched with the assembly outer cover is arranged on the outer side of the upper inner tube.

On the basis of the technical scheme, a first annular supporting block is arranged in the first vulcanized rubber, and a second annular supporting block is arranged in the second vulcanized rubber.

On the basis of the technical scheme, a first sealing rib is arranged at the position, close to the edge, of the top surface of the first vulcanized rubber, and a second sealing rib is arranged at the position, close to the edge, of the bottom surface of the second vulcanized rubber.

The utility model has the beneficial effects that:

the utility model integrates the upper and lower plates of the assembled runner through rubber vulcanization, ensures the characteristics of the runner, avoids the defects of damping fluid leakage and the like when the hydraulic bushing is excited, and simultaneously can design the vulcanized rubber structure into various required structures, thereby better forming the required liquid chamber cavities by the upper and lower main springs.

Drawings

FIG. 1 is a perspective view of an axial hydraulic bushing having a composite vulcanization integrated runner assembly in accordance with an embodiment of the present utility model;

FIG. 2 is a top view of an axial hydraulic bushing having a composite vulcanization integrated runner assembly in accordance with an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an axial hydraulic bushing having a composite vulcanization integrated runner assembly in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of an assembled housing according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a lower main spring assembly according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a lower main spring assembly according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of an upper main spring assembly according to an embodiment of the present utility model;

FIG. 8 is a cross-sectional view of an upper main spring assembly in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a flow path assembly according to an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a flow path assembly according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a flow channel plate according to an embodiment of the present utility model;

FIG. 12 is a cross-sectional view of a flow channel plate in an embodiment of the utility model;

FIG. 13 is a perspective view of an upper flow field plate according to an embodiment of the present utility model;

FIG. 14 is a perspective view of an upper flow field plate from another perspective in accordance with an embodiment of the present utility model;

FIG. 15 is a cross-sectional view of an upper flow field plate in accordance with an embodiment of the present utility model;

FIG. 16 is a perspective view of a lower flow field plate according to an embodiment of the present utility model;

FIG. 17 is a perspective view of a lower flow field plate from another perspective in accordance with an embodiment of the present utility model;

fig. 18 is a cross-sectional view of a lower flow field plate in an embodiment of the utility model.

Reference numerals:

1-assembling a housing; 11-edge folding;

2-lower main spring assembly; 21-a lower inner tube; 22-a first vulcanized rubber; 23-a first annular support block; 24-a first sealing rib;

3-upper main spring assembly; 31-an upper inner tube; 32-a second vulcanized rubber; 33-a second annular support block; 34-a second sealing rib;

4-a runner assembly; 41-runner plate body; 411-upper flow channel plate; 4111-a male ring; 4112-upper planar spiral groove; 4113-upper connection hole; 4114-plug; 412-lower flow field plate; 4121-a jack; 4122-lower planar spiral grooves; 4123-lower connection holes; 413—a runner body; 414-a central aperture; 415-anti-rotation grooves; 42-rubber body; 43-an outer tube;

5-a liquid feeding chamber;

6-a liquid discharging chamber.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The technical scheme and the beneficial effects of the utility model are more clear and definite by further describing the specific embodiments of the utility model with reference to the drawings in the specification. The embodiments described below are exemplary by referring to the drawings for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.

Referring to fig. 1 to 3, an embodiment of the present utility model provides an axial hydraulic bushing with a composite vulcanization integrated runner assembly, which includes an assembly housing 1, an upper main spring assembly 3, a runner assembly 4 and a lower main spring assembly 2 are sequentially disposed in the assembly housing 1 from top to bottom, an upper liquid chamber 5 is disposed between the upper main spring assembly 3 and the runner assembly 4, and a lower liquid chamber 6 is disposed between the lower main spring assembly 2 and the runner assembly 4; a planar spiral flow channel body 413 is arranged in the flow channel assembly 4, and the flow channel body 413 is used for communicating the upper liquid chamber 5 with the lower liquid chamber 6.

Referring to fig. 9 to 12, the flow path assembly 4 includes an outer tube 43 and a flow path plate body 41; the outer tube 43 is matched with the assembly housing 1 and is inserted into the assembly housing 1; the outer vulcanization of the flow channel plate 41 is wrapped with a rubber body 42, and the rubber body 42 extends outwards and is in vulcanization connection with the inner side wall of the outer tube 43. Specifically, a central hole 414 through which the lower main spring assembly 2 passes is formed in the middle of the flow channel plate 41; the outer side edge of the flow channel plate 41 is provided with an anti-rotation groove 415.

Referring to fig. 13 to 18, the flow channel plate body 41 includes an upper flow channel plate 411 and a lower flow channel plate 412 which are fastened to each other; an upper plane spiral groove 4112 and a bolt 4114 are arranged on the bottom surface of the upper runner plate 411, and an upper connecting hole 4113 penetrating the upper runner plate 411 is arranged at the outer side end of the upper plane spiral groove 4112; the top surface of the lower flow channel plate 412 is provided with a lower planar spiral groove 4122 and an insertion hole 4121 adapted to the insertion pin 4114, the lower planar spiral groove 4122 is completely attached to the upper planar spiral groove 4112, and the inner side end of the lower planar spiral groove 4122 is provided with a lower connection hole 4123 penetrating the lower flow channel plate 412. Specifically, the upper flow channel plate 411 and the lower flow channel plate 412 have an annular structure, and a convex ring 4111 is disposed at the inner edge of the top surface of the upper flow channel plate 411. The length of the flow channel can be adjusted by increasing or decreasing the number of the arranged turns of the flow channel; thereby adjusting the hydraulic characteristics of the hydraulic bushing.

Referring to fig. 4, the lower end of the fitting housing 1 is provided with a bead 11. The trimming portion 11 is bonded to rubber to form a seal of damping fluid.

Referring to fig. 5 and 6, the lower main spring assembly 2 includes a lower inner tube 21, the upper end of the lower inner tube 21 is inserted into the upper main spring assembly 3 after passing through the runner assembly 4, and the lower end of the lower inner tube 21 is provided with a first vulcanized rubber 22 adapted to the assembly housing 1. Referring to fig. 7 and 8, the upper main spring assembly 3 includes an upper inner tube 31 interference-fitted with the lower inner tube 21, and a second vulcanized rubber 32 fitted with the fitting housing 1 is provided on the outer side of the upper inner tube 31. Specifically, the first annular supporting block 23 is provided in the first vulcanized rubber 22, and the second annular supporting block 33 is provided in the second vulcanized rubber 32. The first sealing rib 24 is arranged on the top surface of the first vulcanized rubber 22 near the edge, and the second sealing rib 34 is arranged on the bottom surface of the second vulcanized rubber 32 near the edge. The sealing rib is matched with the end face of the runner to form a secondary sealing effect of the upper main spring. A boss is designed at the joint part of the lower main spring inner core and the runner, and is used for limiting in the runner assembly process.

The dry filling mode of the utility model comprises the following steps: and a liquid filling hole is added on the lower main spring annular supporting block. And each assembly of the hydraulic bushing is directly assembled in the external environment, finally, the damping liquid is filled into the hydraulic bushing through a liquid filling hole on the annular supporting block by utilizing dry liquid filling, and finally, the whole hydraulic bushing is filled through interference fit of steel balls and the liquid filling hole.

The working principle of the utility model is as follows:

after the upper main spring, the lower main spring and the runner assembly are assembled, an upper liquid chamber is formed by the rubber contour of the upper main spring and the upper side rubber contour of the runner assembly, and a lower liquid chamber is formed by the rubber contour of the lower main spring and the lower side rubber contour of the runner assembly; the upper liquid chamber, the lower liquid chamber and the flow channel space are filled with damping liquid, and when the bushing is axially excited, the damping liquid flows from one liquid chamber to the other liquid chamber along the flow channel, so that the damping liquid plays a role in buffering and damping. Thereby realizing the hydraulic characteristic function of the axial direction of the bushing. The expansion rigidity of the hydraulic bushing is mainly determined by an upper main spring, a lower main spring and a vulcanized rubber structure on a runner. The expansion rigidity of the hydraulic bushing can be changed by changing the structure of the rubber body. The peak frequency, the hysteresis angle and other hydraulic characteristics of the hydraulic bushing can be adjusted by changing the sectional area of the flow passage assembly, the length of the flow passage, the surface finish of the flow passage and the like.

In the description of the present utility model, a description of the terms "one embodiment," "preferred," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model, and a schematic representation of the terms described above in the present specification does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model is not limited to the embodiments described above, but a number of modifications and adaptations can be made by a person skilled in the art without departing from the principle of the utility model, which modifications and adaptations are also considered to be within the scope of the utility model. What is not described in detail in this specification is prior art known to those skilled in the art.

Claims (10)

1. An axial hydraulic bushing with a composite vulcanization integrated runner assembly, comprising an assembly housing (1), characterized in that: an upper main spring assembly (3), a runner assembly (4) and a lower main spring assembly (2) are sequentially arranged in the assembly housing (1) from top to bottom, an upper liquid chamber (5) is arranged between the upper main spring assembly (3) and the runner assembly (4), and a lower liquid chamber (6) is arranged between the lower main spring assembly (2) and the runner assembly (4); a planar spiral flow channel body (413) is arranged in the flow channel assembly (4), and the flow channel body (413) is used for communicating an upper liquid chamber (5) and a lower liquid chamber (6).

2. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 1, wherein: the flow channel assembly (4) comprises an outer tube (43) and a flow channel plate body (41); the outer tube (43) is matched with the assembly housing (1) and is inserted into the assembly housing (1); the outside of the runner plate body (41) is vulcanized and wrapped with a rubber body (42), and the rubber body (42) extends outwards and is vulcanized and connected with the inner side wall of the outer tube (43).

3. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 2, wherein: a central hole (414) for the lower main spring assembly (2) to pass through is formed in the middle of the flow passage plate body (41); the outer side edge of the flow channel plate body (41) is provided with an anti-rotation groove (415).

4. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 2, wherein: the runner plate body (41) comprises an upper runner plate (411) and a lower runner plate (412) which are buckled with each other; an upper plane spiral groove (4112) and a bolt (4114) are formed in the bottom surface of the upper flow channel plate (411), and an upper connecting hole (4113) penetrating the upper flow channel plate (411) is formed in the outer side end of the upper plane spiral groove (4112); the top surface of lower runner board (412) is provided with lower plane helicla flute (4122) and jack (4121) with bolt (4114) looks adaptation, and the inboard end of lower plane helicla flute (4122) is provided with lower connecting hole (4123) that link up lower runner board (412).

5. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 4, wherein: the upper runner plate (411) and the lower runner plate (412) are of annular structures, and a convex ring (4111) is arranged at the inner circular edge of the top surface of the upper runner plate (411).

6. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 1, wherein: the lower end of the assembly housing (1) is provided with a edging part (11).

7. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 1, wherein: the lower main spring assembly (2) comprises a lower inner tube (21), the upper end of the lower inner tube (21) penetrates through the runner assembly (4) and then is inserted into the upper main spring assembly (3), and the lower end of the lower inner tube (21) is provided with first vulcanized rubber (22) which is matched with the assembly outer cover (1).

8. The axial hydraulic bushing with a composite cure integrated runner assembly of claim 7, wherein: the upper main spring assembly (3) comprises an upper inner tube (31) in interference fit with the lower inner tube (21), and a second vulcanized rubber (32) matched with the assembly outer cover (1) is arranged on the outer side of the upper inner tube (31).

9. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 8, wherein: a first annular supporting block (23) is arranged in the first vulcanized rubber (22), and a second annular supporting block (33) is arranged in the second vulcanized rubber (32).

10. The axial hydraulic bushing with a composite cure-in-one runner assembly of claim 9, wherein: the first sealing rib (24) is arranged at the position, close to the edge, of the top surface of the first vulcanized rubber (22), and the second sealing rib (34) is arranged at the position, close to the edge, of the bottom surface of the second vulcanized rubber (32).