CN216069595U

CN216069595U - Pull rod type suspension

Info

Publication number: CN216069595U
Application number: CN202122445619.1U
Authority: CN
Inventors: 叶军; 让·皮埃尔·梅西安
Original assignee: ContiTech China Rubber and Plastics Technology Ltd
Current assignee: ContiTech China Rubber and Plastics Technology Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-03-18
Anticipated expiration: 2031-10-11

Abstract

The utility model discloses a pull rod type suspension, which comprises a support, an inner core and a vibration reduction main spring, wherein the vibration reduction main spring is positioned between the support and the inner core, the support is provided with a through movable hole, the inner core and the vibration reduction main spring are both arranged in the movable hole, the inner core comprises a first inner core and a second inner core, the first inner core is provided with a first mounting hole, the second inner core is provided with a first weakening groove, and the tensile strength and the hardness of the first inner core are higher than those of the second inner core. By the arrangement, the matching of the inner core and the bolt, the counter part and the like can be ensured, and the fracture requirement when the specified load is exceeded can be met.

Description

Pull rod type suspension

[ technical field ] A method for producing a semiconductor device

The present invention relates to a tie rod suspension that may be used to damp a powertrain of a vehicle.

[ background of the utility model ]

With the continuous development of society, vehicles become an indispensable part of people's lives as vehicles, and common vehicles include cars, trucks, buses and the like. In order to satisfy various functions, a vehicle is generally provided with a plurality of vibration devices, such as an oil-burning engine or an electric motor for supplying power, an air-conditioning compressor for compressing and driving a refrigerant, etc., which generate large vibration during operation; when a vehicle runs on an uneven road surface, or emergency situations occur, emergency braking is required, or acceleration is required, or collision occurs, the vehicle body can shake, and the vibration damping device correspondingly also shakes; these vibrations and jolts significantly affect the rider's riding experience. For this reason, various suspensions for isolating vibration of the vibration device, such as a drawbar type suspension, have been developed. The traditional pull rod type suspension comprises a plastic bracket, a steel inner core and a vibration damping main spring which is formed between the bracket and the inner core in a vulcanization mode. The conventional tie rod type suspension effectively achieves the effect of vibration reduction, however, when the vehicle is vibrated and/or shaken by a strong external force, it is difficult to control the vibration device to move a long distance in a predetermined direction without rebounding.

Therefore, it is desirable to provide a new technical solution to solve the above technical problems.

[ Utility model ] content

The technical problem to be solved by the utility model is as follows: provided is a pull rod type suspension which can not only ensure the cooperation with a bolt, a hand piece and the like, but also realize the fracture requirement when the specified load is exceeded.

In order to solve the technical problems, the utility model can adopt the following technical scheme: the utility model provides a pull rod formula suspension, its is including support, inner core and being located the support with damping main spring between the inner core, the support has the movable hole that runs through, the inner core with damping main spring all set up in the movable hole, the inner core is including first inner core and second inner core, first inner core is provided with first mounting hole, the second inner core is provided with first weakening groove, the tensile strength and the hardness of first inner core all are greater than the second inner core.

In a preferred embodiment, the first core has a tensile strength of 330 mpa or greater and a hardness of 300 vickers or greater.

In a preferred embodiment, the tensile strength of the second core is 260-.

In a preferred embodiment, the inner core includes a flexible connector disposed between the first inner core and the second inner core.

In a preferred embodiment, the flexible connector is a rubber or silicone element molded between the first core and the second core.

In a preferred embodiment, the second inner core is provided with a second mounting hole, the first inner core is mounted in the second mounting hole, and the first weakening groove is communicated with the second mounting hole.

In a preferred embodiment, the second core is provided with two impact portions arranged oppositely to be engaged with the bracket and a thin wall portion connecting the two impact portions, and the first weakening groove is provided on or near the thin wall portion.

In a preferred embodiment, a buffer space and a second buffer block are arranged between the two striking parts and the bracket.

In a preferred embodiment, the first weakening grooves are two and are respectively provided at the junctions of the two striking portions and the thin-walled portion.

In a preferred embodiment, the first inner core has two oppositely disposed ends and gear hobbing disposed at both of the ends.

In a preferred embodiment, the tie-rod suspension includes a buffer member assembled between the bracket and the thin-wall portion, the buffer member is in a compression deformation state under the action of the bracket and the inner core, the buffer member includes a holding member and a first buffer block connected with each other, the second inner core is provided with a holding groove matched with the holding member, and the holding member is provided with a second weakening groove.

Compared with the prior art, the utility model has the following beneficial effects: the inner core is arranged to comprise the first inner core and the second inner core, the first inner core is provided with the first mounting hole, the second inner core is provided with the first weakening groove, and the tensile strength and hardness of the first inner core are higher than those of the second inner core, so that the matching of the inner core and a bolt, a hand piece and the like can be guaranteed, and the breaking requirement when the specified load is exceeded can be met.

[ description of the drawings ]

Fig. 1 is a perspective view of a drawbar type suspension according to a preferred embodiment of the present invention.

Fig. 2 is a front view of the drawbar suspension shown in fig. 1.

Fig. 3 is a partially exploded perspective view of the drawbar suspension shown in fig. 1, with the bumper disassembled.

Fig. 4 is a partially exploded perspective view of the drawbar suspension shown in fig. 3, wherein a buffer is not shown.

FIG. 5 is a perspective view of the drawbar type suspension shown in FIG. 4, wherein the flexible connecting member is not shown.

Fig. 6 is a perspective view of the second inner core of the pull rod type suspension shown in fig. 4.

Fig. 7 is a cross-sectional view of the drawbar type suspension shown in fig. 2 taken along line a-a.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Other embodiments, which can be obtained by those skilled in the art without any inventive step, are within the scope of the present invention.

Referring to fig. 1, the present invention provides a tie rod type suspension 100 that can be used for, but is not limited to, damping vibration of an electric motor or an oil engine, and the tie rod type suspension 100 can be used as a front tie rod or a rear tie rod according to actual needs. The pull rod type suspension 100 comprises a bracket 1, an inner core 2, a main damping spring 3 positioned between the bracket 1 and the inner core 2, and a buffer 4 assembled between the bracket 1 and the inner core 2. The support 1 is provided with a through movable hole 10, and the inner core 2 and the damping main spring 3 are both arranged in the movable hole 10.

Referring to fig. 1 to 3, the buffer member 4 is in a compression deformation state under the action of the bracket 1 and the inner core 2, and the buffer member 4 is set to have a certain preload after the assembly is completed, so that the durability of the buffer member 4 and the fatigue life of the buffer member 4 in a pressed state are both good, and the service life of a product is prolonged. Further, the compressive deformation of bolster 4 makes damping main spring 3 is in support 1 with the compressive deformation state also is under the effect of inner core 2, so set up, on the one hand, can improve damping main spring 3's durability, on the other hand, damping main spring 3 is less at the dynamic stiffness under the pressurized state, will pull rod formula suspension 100 is applied to when improving acceleration performance, can be so that whole car NVH feels better, can improve the roar.

Referring to fig. 2 and 3, the buffer 4 is fixed to one of the bracket 1 and the inner core 2 and elastically pressed against the other. The buffer 4 comprises a retainer 41 and a first buffer 42 connected to each other. The hardness of the fixing element 41 is greater than that of the first buffering block 42, for example, the fixing element 41 is made of plastic or metal, and the first buffering block 42 is made of rubber, so that the buffering element 4 can be better fixed, and the risk of falling off during the working process is reduced. The holder 1 or the core 2 is provided with a holding groove cooperating with the holder 41, in this embodiment the core 2 is provided with a holding groove 20. Referring to fig. 7, in the direction of the compressive deformation of the buffer 4, the first buffer block 42 is formed with an inwardly-tapered neck portion 420 by inwardly tapering the entire circumferential portion of the first buffer block, and the surface of the inwardly-tapered neck portion 420 is preferably arc-shaped. The arrangement of the retracted neck 420 makes the buffer member 4 easier to control, and can effectively prevent the buffer member 4 from being disengaged in the working process. The surface of the neck-in portion 420 is set to be an arc-shaped surface, so that the durability of the buffer member 4 can be improved, and stress concentration is not easily caused. Referring to fig. 2, 5 and 7, one of the bracket 1 or the inner core 2, which is provided with the fixing groove, is provided with an elastic anti-disengaging portion extending into the fixing groove, the fixing element 41 is provided with an anti-disengaging groove 410 engaged with the elastic anti-disengaging portion, the extending direction of the elastic anti-disengaging portion is preferably perpendicular to the assembling direction of the buffer element 4, and in this embodiment, the inner core 2 is provided with an elastic anti-disengaging portion 5.

Referring with emphasis to fig. 4 to 6, the inner core 2 includes a first inner core 21, a second inner core 22, and a flexible connecting member 23 disposed between the first inner core 21 and the second inner core 22. The first inner core 21 is provided with a first mounting hole 210, the second inner core 22 is provided with a first weakening groove 220, and the tensile strength and hardness of the first inner core 21 are both greater than those of the second inner core 22. With the arrangement, the matching of the inner core 2 and a bolt, a counter element and the like can be ensured, and the fracture requirement when the specified load is exceeded can be realized, specifically, the first inner core 21 can be well matched with the bolt and the counter element due to the high tensile strength and hardness, and the second inner core 22 can be fractured when the stress exceeds the specified load due to the low tensile strength and hardness, so that the motor or the fuel engine can move for a long distance in a specific direction and cannot rebound. In a preferred embodiment, the tensile strength of the first core 21 is greater than or equal to 330 megapascals (MPa), the hardness of the first core 21 is greater than or equal to 300 Vickers Hardness (HV), the tensile strength of the second core 22 is 260-300 megapascals (MPa), and the hardness of the second core 22 is 100-200 Vickers Hardness (HV). The flexible connector 23 is preferably a rubber or silicone member molded between the first core 21 and the second core 22, and the second core 22 is provided with a glue injection groove 221 for molding the flexible connector 23. In this embodiment, the flexible connecting member 23 fills the gap between the first inner core 21 and the second inner core 22, and the first weakening groove 220 and the glue injection groove 221. The flexible connecting piece 23 is arranged to ensure that the respective functions of the first inner core 21 and the second inner core 22 are realized, so that the influence on the function realization can be effectively reduced, and if the flexible connecting piece 23 is replaced by other relatively hard connecting pieces, such as a plastic connecting piece, the strength of the first inner core 21 and the second inner core 22 can be influenced, so that the function realization of the two parts is influenced, of course, in some applications with lower requirements, a plastic connecting piece and the like can be selected or other connecting modes can be selected. Further, the first inner core 21 has two opposite end portions 211 and the hobbing teeth 212 arranged at the two end portions 211, and the hobbing teeth 212 can prevent the first inner core 21 and a hand piece from rotating, effectively reduce the risk of force deviation of the buffer 4 due to rotation, and further ensure that the second inner core 22 breaks when exceeding a specified load.

Referring to fig. 2, 4 to 6, the second core 22 is provided with a second mounting hole 222, the first core 21 is mounted in the second mounting hole 222, the first weakening groove 220 is communicated with the second mounting hole 222, and the glue injection groove 221 is also communicated with the second mounting hole 222. The second inner core 22 is provided with two impact portions 223 oppositely arranged to be matched with the bracket 1 and a thin-wall portion 224 connecting the two impact portions 223, the first weakening groove 220 is arranged on the thin-wall portion 224 or near the thin-wall portion 224, in this embodiment, there are two first weakening grooves 223 respectively arranged at the connecting positions of the two impact portions 223 and the thin-wall portion 224. A buffer space 6 and a second buffer block 7 are arranged between the two striking parts 223 and the bracket 1. Referring to fig. 3, the holding groove 20 is formed by disposing the second core 22, the holding element 41 is disposed with a second weakening groove 410, and the second weakening groove 410 is disposed to reduce the influence of the holding element 41 on the strength of the second core 22, so as to reduce the influence on the fracture in a specific situation.

It will be appreciated that the above-described embodiments of the utility model may be combined with each other to obtain further embodiments, without conflict. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Claims

1. The utility model provides a pull rod formula suspension, its is including support, inner core and be located the support with the damping main spring between the inner core, the support has the activity hole that runs through, the inner core with the damping main spring all set up in the activity hole, its characterized in that: the inner core comprises a first inner core and a second inner core, the first inner core is provided with a first mounting hole, the second inner core is provided with a first weakening groove, and the tensile strength and hardness of the first inner core are both greater than those of the second inner core.

2. The tie-rod type suspension of claim 1, wherein: the tensile strength of the first inner core is greater than or equal to 330 MPa, and the hardness of the first inner core is greater than or equal to 300 Vickers hardness.

3. The tie-rod type suspension of claim 1, wherein: the tensile strength of the second inner core is 260-.

4. The tie-rod type suspension of claim 1, wherein: the inner core includes a flexible connector disposed between the first inner core and the second inner core.

5. The tie-rod type suspension of claim 4, wherein: the flexible connecting piece is a rubber piece or a silica gel piece formed between the first inner core and the second inner core.

6. The tie rod type suspension of any one of claims 1 to 5, wherein: the second inner core is provided with a second mounting hole, the first inner core is mounted in the second mounting hole, and the first weakening groove is communicated with the second mounting hole.

7. The tie rod type suspension of any one of claims 1 to 5, wherein: the second inner core is provided with two impact parts which are oppositely arranged and matched with the bracket and a thin-wall part for connecting the two impact parts, and the first weakening groove is arranged on the thin-wall part or near the thin-wall part.

8. The tie-rod type suspension of claim 7, wherein: two striking portion with all be provided with between the support and cushion space and second buffer block.

9. The tie-rod type suspension of claim 7, wherein: the first weakening grooves are two and are respectively arranged at the connecting positions of the two impact parts and the thin wall part.

10. The tie rod type suspension of any one of claims 1 to 5, wherein: the first inner core is provided with two opposite end parts and hobbing arranged at the two end parts.

11. The tie-rod type suspension of claim 7, wherein: the pull rod type suspension comprises a buffer piece assembled between the support and the thin wall portions, the buffer piece is in a compression deformation state under the action of the support and the inner core, the buffer piece comprises a fixing piece and a first buffer block which are connected with each other, the second inner core is provided with a fixing groove matched with the fixing piece, and the fixing piece is provided with a second weakening groove.