CN202040253U

CN202040253U - Vibration absorber for automobile transmission shaft

Info

Publication number: CN202040253U
Application number: CN2011201071129U
Authority: CN
Inventors: 曾涛
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2011-04-13
Filing date: 2011-04-13
Publication date: 2011-11-16
Anticipated expiration: 2021-04-13

Abstract

The utility model discloses a vibration absorber for an automobile transmission shaft, which comprises a rubber body (1) and an iron core (2), wherein the rubber body (1) is of a hollow sleeve structure; the middle part of the rubber body (1) is integrally provided with a ring-shaped boss (1a); the iron core (2) is embedded in the ring-shaped boss (1a); the end faces of both ends of the ring-shaped boss (1a) are provided with grooves (1b); and the grooves (1b) are uniformly distributed on the end faces of the ring-shaped boss (1a) along the periphery. Due to the adoption of the vibration absorber, the vibration frequency can be conveniently regulated, so that the requirement on the transmission shafts of different types of vehicles is met. The vibration absorber has the characteristics that the design is ingenious; the vibration absorber is easy to process; the cost is low; the application range is wide; and the like.

Description

The truck drive shaft bump leveller

Technical field

The utility model relates to a kind of automobile component, particularly the transmission shaft bump leveller on the automobile.

Background technique

Automobile in the process of moving, power system constantly applies various excitings to transmission shaft, especially the inertial force that produces based on the imbalance of the reciprocal inertia force of motor and transmission shaft impacts.These excitations will cause the transmission shaft vibration, and the vibration of transmission shaft is passed to vehicle body by outer universal joint, wheel hub, suspension with excitation energy, imports vibrational energy into cavity again after the body outer skin excited resonance, makes the excited resonance of vehicle cavity, produce the low frequency boom.

Influence for fear of transmission shaft resonates and brings to vehicle performance adds bump leveller on the transmission shaft axle.As shown in Figure 3, Figure 4, traditional bump leveller is made of rubber body 1 and iron core 2, and wherein rubber body 1 is the hollow sleeve structure, is formed with annular boss 1a at the middle part of rubber body 1, is embedded iron core 2 in this annular boss 1a.The vibration frequency of above-mentioned bump leveller design equals the transmission shaft first natural frequency, during automobile running, the transmission shaft vibrational energy overwhelming majority will be absorbed by bump leveller, because energy conservation, the vibration of transmission shaft itself will reduce significantly, thereby effectively reduce the vibrational energy that is passed to vehicle body, realized reducing the purpose of vehicle cavity low frequency boom.Because the first natural frequency of the transmission shaft of different automobile types is unequal, produce what vehicles, just need to be equipped with the bump leveller of corresponding number, each bump leveller is all wanted independent die sinking like this, and cost of production is quite high.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of adjustment vibration frequency truck drive shaft bump leveller easily.

The technical solution of the utility model is as follows: a kind of truck drive shaft bump leveller, comprise rubber body (1) and iron core (2), wherein rubber body (1) is the hollow sleeve structure, be formed with annular boss (1a) at the middle part of rubber body (1), be embedded iron core (2) in this annular boss (1a), its key is: be provided with groove (1b) on the end face at described annular boss (1a) two ends, this groove (1b) evenly distributes by circumference on the end face of annular boss (1a).

As everyone knows, the vibration frequency of bump leveller is relevant with himself rigidity k value and quality m value, as formula f=

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Shown in, rigidity k value is big more, and vibration frequency is big more; Quality m value is big more, and vibration frequency is more little.The utility model increases groove on the end face of rubber body annular boss, the degree of depth that can adjust groove during production flexibly realizes the adjustment of rigidity k value, and quality m value changes not quite, the vibration frequency that can control bump leveller so easily is in the value range of expectation, same secondary mould promptly can be used for producing the bump leveller of different vibration frequencies by repairing a die, and effectively reduces cost of production.Groove evenly distributes by circumference at the end face of rubber body annular boss, and not only processing and fabricating is easy, and can not influence the performance of bump leveller.

In order to adapt to the needs of different transmission shafts, on the end face of each end of described annular boss (1a), be provided with 2～8 grooves (1b).

For the further convenience that improves processing, and the utilization ratio of increase material, described groove (1b) is fan-shaped.

Beneficial effect: the utility model can be adjusted vibration frequency easily, with the needs of the transmission shaft that satisfies different automobile types, has characteristics such as be skillfully constructed, easy processing, cost are low, widely applicable.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the structural representation of background technique.

Fig. 4 is the A-A sectional view of Fig. 3.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1 and Figure 2, the utility model is made of rubber body 1 and iron core 2, and wherein rubber body 1 is the hollow sleeve structure, is formed with annular boss 1a at the middle part of rubber body 1, be embedded with a circle iron core 2 in this annular boss 1a, and iron core 2 is near the cylindrical of annular boss 1a.On the end face at described annular boss 1a two ends, be provided with groove 1b, the number of each end end face upper groove 1b of annular boss 1a is 2～8, be preferably 6 in the present embodiment, this groove 1b evenly distributes by circumference on the end face of annular boss 1a, and the center of circle of groove 1b place circumference is concentric with the center of circle of annular boss 1a.Described groove 1b can be different shapes as required, is preferably in the present embodiment to fan-shaped.

Claims

1. truck drive shaft bump leveller, comprise rubber body (1) and iron core (2), wherein rubber body (1) is the hollow sleeve structure, be formed with annular boss (1a) at the middle part of rubber body (1), be embedded iron core (2) in this annular boss (1a), it is characterized in that: be provided with groove (1b) on the end face at described annular boss (1a) two ends, this groove (1b) evenly distributes by circumference on the end face of annular boss (1a).

2. truck drive shaft bump leveller according to claim 1 is characterized in that: be provided with 2～8 grooves (1b) on the end face of each end of described annular boss (1a).

3. truck drive shaft bump leveller according to claim 1 and 2 is characterized in that: described groove (1b) is for fan-shaped.