CN2310720Y - suspension frame - Google Patents

Abstract

The utility model relates to a frame structure of moving away to avoid possible earthquakes mainly comprises crotch, crossbeam, auxiliary girder and the back frame of preceding wheel, and the crossbeam concreties together with the back frame, and the crotch of preceding wheel comprises upper bracket and lower carriage two parts, is connected by "Z" type connecting piece between the upper and lower carriage, and the crossbeam is together fixed with the upper bracket, and the one end and the lower carriage fixed connection of auxiliary girder, the other end is connected with the fulcrum of fixing on the frame of back, can rotate around the fulcrum. The utility model discloses simple structure, the shock attenuation effect is strong, and the frame is not fragile, and long service life mainly is applicable to the bicycle, on the rickshaw such as tricycle.

Description

suspension frame

The utility model relates to a novel vehicle frame structure, in particular to a vehicle frame with a shock-absorbing effect.

At present, the vehicle frame structure of existing rickshaws such as bicycle or tricycle as shown in Figure 1, mainly is made up of fork frame 20, crossbeam 21, auxiliary beam 22 and rear vehicle frame 23 of front wheel, crossbeam 21, auxiliary beam 22 and rear The vehicle frame 23 is an integral structure, and the fork frame 20 of the front wheel is consolidated with the integral structure. Although this kind of frame has the advantages of stability and strong bearing capacity, due to its rigid connection, when the wheels travel on bumpy roads, although the front tires have a very limited shock absorption effect, under the action of the vibration force N1, The front wheels tend to rise and move, so the front wheels bump up and down, causing the vehicle frame to vibrate accordingly, affecting people's control of the driving direction and comfort when pedaling, and the wheels and vehicle frame are easily damaged.

The purpose of this utility model is to design a shock-absorbing vehicle frame, which has a simple structure, good shock absorption and durability, and enhances the steering function of the front wheels.

The shock absorber frame designed by the utility model is mainly composed of the fork frame of the front wheel, the beam, the auxiliary beam and the rear frame. The beam and the rear frame are consolidated together. The upper and lower brackets are connected by "Z" type connectors, the beam is fixed with the upper bracket, one end of the auxiliary beam is fixedly connected with the lower bracket, and the other end is connected with the fulcrum fixed on the rear frame. Rotate around the fulcrum.

In order to maintain the shape of the above-mentioned "Z"-shaped connector and have stretching force during use, in the "Z"-shaped connector of the shock-absorbing frame designed by the utility model, the connecting rod is an elastic rod, which can make the "Z"-shaped The inner included angle of the connecting piece is in the range of 0°-180°.

In the shock-absorbing vehicle frame designed by the utility model, the middle connecting rod of the "Z" type connector is a cylindrical torsion spring.

In the shock-absorbing vehicle frame designed by the utility model, a shock-absorbing element is also provided, which is located between the auxiliary beam or the lower bracket of the front wheel and the fixed vehicle body.

In order to facilitate installation and maintain the attractive appearance of the vehicle frame, in the shock-absorbing vehicle frame designed by the utility model, the two ends of the shock-absorbing element are fixed on the auxiliary frame and the rear vehicle frame.

The shock-absorbing element of the shock-absorbing vehicle frame designed by the utility model is an elastic element, so as to improve the shock-absorbing effect.

When the shock-absorbing frame designed by the utility model is used, if the road surface is bumpy and the front wheel moves up to form an arc swing, the auxiliary beam connected with the fork frame of the front wheel can rotate around the fulcrum at the joint to assist Swing, control the direction of the "Z"-shaped connector to reduce the swing amplitude of the handlebar due to vibration and maintain the direction of travel. Shock effect, reducing the amplitude of bumps.

The advantage of the designed shock absorber frame of the utility model is:

1. The structure is simple and the shock absorption effect is strong. Since the fork frame of the frame is equipped with a "Z" type connector, and the auxiliary beam can swing, and a shock absorbing element is added between the auxiliary beam and the fixed vehicle body, the impact on the vehicle body caused by road bumps is greatly reduced. shock.

2. Comfortable riding, reduce human fatigue. Because the vibration is reduced, and the designed auxiliary beam has the effect of guiding the swing direction of the frame, the control of the handlebar is easy to operate, and both the rider and the rider feel relaxed and comfortable, and are not prone to fatigue for a long time.

3. The frame is not easily damaged and has a long service life. The frame is no longer the rigid connection in the past. Some parts that make up the frame have a certain degree of elasticity, which reduces the impact on the connection parts during vibration, thereby reducing damage such as collisions and fractures, protecting the frame and prolonging the service life. role.

The shock-absorbing vehicle frame designed by the utility model is mainly applicable to small rickshaws such as bicycles and tricycles.

Figure 1 is a structural diagram of the original frame.

Fig. 2 is the structural diagram of the shock-absorbing vehicle frame designed by the utility model.

FIG. 3 is a schematic diagram of a modified use state of FIG. 2 .

Fig. 4 is a cross-sectional view of the connecting point of the fork frame and the "Z"-shaped connecting piece in Fig. 2 .

The embodiment and effect of the shock-absorbing vehicle frame designed by the utility model will be further described below in conjunction with specific examples according to the accompanying drawings.

Example

The shock absorber frame shown in Figure 2 is mainly composed of a crossbeam 1 of the front wheel, a fork frame 2, an auxiliary beam 3 and a rear frame 4. The fork frame 2 of the front wheel is divided into two parts, the upper bracket 5 and the lower bracket 6. The upper and lower brackets are connected by a "Z" connector 7, and the middle link 8 of the "Z" connector 7 is a cylindrical torsion spring with elasticity to reduce vibration during driving. The connection between the fork frame 2 and the "Z"-shaped connector 7 is shown in FIG. 4 . One end of the crossbeam 1 is fixed together with the upper bracket 5 , and the other end is fixed together with the rear vehicle frame 4 . One end of auxiliary beam 3 is fixed together with lower bracket 6, and the other end is connected with rear vehicle frame 4 by being fixed on upper fulcrum 9 of rear vehicle frame 4, and fulcrum 9 is a rotating shaft, and auxiliary beam 3 can rotate around fulcrum 9. A shock-absorbing element 10 is installed between the auxiliary beam 3 and the rear vehicle frame 4, and the shock-absorbing element 10 is a rod-shaped elastic member to absorb shock force. During driving, as shown in Figure 3, when the road surface is uneven and vibrates, the fork frame 2 of the front wheel is subject to the vibration force N2, which tends to move upward, causing the elastic deformation of the "Z"-shaped connector 7, and the auxiliary beam 3 follows the vibration force N2. It rotates around the fulcrum 9, so that one end fixedly connected with the lower bracket 6 moves up in an arc shape, and at the same time, the shock absorbing element 10 elastically stretches, so that the connecting end of the shock absorbing element 10 and the auxiliary beam 3 moves from point A to At point B, under the action of the elastic force of the shock-absorbing element 10, the auxiliary beam 3 is hindered from moving freely, so that the auxiliary beam 3 plays a guiding role and weakens the vibration force. It can be seen that the fork frame 2 of the front wheel does not produce hard impact force when the road surface is bumpy, and each part of the vehicle frame is protected. This kind of frame is used in bicycles or other rickshaws. The frame itself can produce a shock absorbing function, which is bound to improve the service life of the car. Whether it is a bicycle or a person riding a car, it will reduce the fatigue caused by bumps, and it is more convenient to use. reliable.

Claims (6)

1. A shock-absorbing vehicle frame, which is mainly composed of a fork frame of the front wheel, a crossbeam, an auxiliary beam and a rear frame, the crossbeam and the rear frame are consolidated together, and it is characterized in that the fork frame of the front wheel is composed of an upper bracket and a lower bracket It consists of two parts, the upper and lower brackets are connected by "Z" type connectors, the beam is fixed with the upper bracket, one end of the auxiliary beam is fixedly connected with the lower bracket, and the other end is connected with the fulcrum fixed on the rear frame. Can rotate around the fulcrum. 2. The shock absorber frame according to claim 1, further characterized in that: the middle link of the "Z"-shaped connector is an elastic rod, so that the inner angle of the "Z"-shaped connector is between 0° and 180° within range. 3. The shock-absorbing vehicle frame according to claim 2, further characterized in that: the middle link of the "Z"-shaped connector is a cylindrical torsion spring. 4. The shock-absorbing vehicle frame according to claim 1, further characterized in that: a shock-absorbing element is provided between the auxiliary beam or the lower bracket of the front wheel and the fixed vehicle body. 5. The shock-absorbing frame according to claim 4, further characterized in that: both ends of the shock-absorbing element are fixed on the auxiliary frame and the rear frame. 6. The shock-absorbing vehicle frame according to claim 1, further characterized in that: the shock-absorbing element is an elastic element.

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