CN213808640U - Self-adaptive front shock absorber for electric tricycle - Google Patents
Self-adaptive front shock absorber for electric tricycle Download PDFInfo
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- CN213808640U CN213808640U CN202022815674.0U CN202022815674U CN213808640U CN 213808640 U CN213808640 U CN 213808640U CN 202022815674 U CN202022815674 U CN 202022815674U CN 213808640 U CN213808640 U CN 213808640U
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- shock absorber
- front fork
- urceolus
- spring
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Abstract
The utility model relates to a bumper shock absorber before electric tricycle uses self-adaptation belongs to electric tricycle technical field. Including the front fork, the urceolus, coil spring, two oil sealings, attenuator and piston rod, the front fork passes through two oil sealings embedding urceolus, be equipped with variable pitch damping spring in the bifurcated pipe of front fork upper portion, plug screw and sealing washer are installed at the front fork top, the front fork sub-unit connection has the attenuator, coil spring installs inside and the attenuator of front fork in the front and has constituted bumper shock absorber buffer system jointly, the piston rod sets up in the urceolus, the top of piston rod is equipped with supporting spring and blocks the front fork and stretch out the urceolus, the lower part of piston rod is passed through fastening bolt and is fixed in urceolus bottom portion. The utility model has the advantages that: when the requirements of laws and regulations are met, the front shock absorber automatically adapts to the most suitable damping according to the conditions of the current road condition, the vehicle speed, the load and the like, sufficient supporting force is provided, and the optimal comfort and controllability of the vehicle are ensured.
Description
Technical Field
The utility model relates to a bumper shock absorber before electric tricycle uses self-adaptation belongs to electric tricycle technical field.
Background
The front shock absorbers assume the task of supporting the mass of the body and transmitting the weight of the vehicle to the ground through the wheels. The motion of the steering system of the electric tricycle is correctly transmitted to the road surface through the front shock absorber, so that the vehicle can stably and independently run by self, and the operation comfort in the running process of the vehicle is guaranteed. The shock absorber is basically composed of a spring, a damper and a connecting piece. In recent years, as the demand for comfort has been increasing, higher demands have been made on the function and performance of the front shock absorber. Pursuing the control comfort, diversity and individuality of the front shock absorber becomes an important link influencing the performance of the shock absorber.
The existing front shock absorber has the following defects: 1. in the compression process of the front shock absorber, shock absorption oil is instantly squeezed into the front fork tube through the piston rod oil hole and the front fork tube one-way valve; in the process of recovery, the damping oil returns along the original path instantly. The damping oil only serves the purpose of lubricating the springs, and the vibration of the vehicle body only depends on the damping springs. The user experiences reduced control comfort during use. 2. The design of the front shock absorber spring can not meet the 'fat and thin' characteristics of a driver and can not meet the driving requirements of flat and severe road surfaces.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming of the prior art, the utility model provides a bumper shock absorber before electric tricycle uses self-adaptation guarantees best vehicle travelling comfort and nature controlled when satisfying the legislation requirement.
The utility model discloses a realize through following technical scheme: the utility model provides a bumper shock absorber before electric tricycle uses self-adaptation which characterized in that: including the front fork, the urceolus, coil spring, two oil sealings, attenuator and piston rod, the front fork passes through two oil sealings embedding urceolus, be equipped with variable pitch damping spring in the bifurcated pipe of front fork upper portion, plug screw and sealing washer are installed at the front fork top, the front fork sub-unit connection has the attenuator, coil spring installs inside and the attenuator of front fork in the front and has constituted bumper shock absorber buffer system jointly, the piston rod sets up in the urceolus, the top of piston rod is equipped with supporting spring and blocks the front fork and stretch out the urceolus, the lower part of piston rod is passed through fastening bolt and is fixed in urceolus bottom portion.
The spiral spring adopts a variable-stiffness metal spiral spring, the spring characteristic adopts a nonlinear characteristic, the thickness and the density of the spring are changed from top to bottom, and the elastic coefficient is not a fixed value.
The double oil seals form a whole oil seal structure by two oil seals together, and when the primary seal fails, the secondary seal can still seal.
The damper is divided into a free valve and a guide sleeve, the free valve is made of a 65Mn spring steel strip, and the guide sleeve is made of powder metallurgy or aluminum alloy.
The piston rod adopts a low-carbon alloy piston rod, a piston ring at the top of the piston rod and a double oil seal form two-point positioning, the piston ring arranged at the top of the piston rod and a free valve arranged in a lower end hole of the front fork tube and between the outer circle of the piston rod isolate damping oil, and a damper working system is divided into three parts, namely an oil storage cavity, a high-pressure cavity and a low-pressure cavity.
The front fork pipe is formed by multiple finish rolling of a high-strength alloy steel front fork pipe and a hot rolled pipe, and the wall thickness of the precision seamless steel pipe with the medium wall thickness is more than or equal to 2.5 mm.
The outer cylinder is a cast aluminum alloy outer cylinder.
The utility model has the advantages that: when the requirements of laws and regulations are met, the front shock absorber automatically adapts to the most suitable damping according to the conditions of the current road condition, the vehicle speed, the load and the like, sufficient supporting force is provided, and the optimal comfort and controllability of the vehicle are ensured.
Drawings
The invention will be further explained below with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
Detailed Description
As shown in fig. 1 and 2, the adaptive front shock absorber for an electric tricycle is characterized in that: including preceding breeches pipe 1, urceolus 2, coil spring 3, two oil blanket 4, attenuator 5 and piston rod 6, preceding breeches pipe 1 is through two oil blanket 4 embedding urceolus 2, be equipped with variable pitch damping spring in the breeches pipe of 1 upper portion of preceding breeches pipe, plug screw and sealing washer are installed at 1 top of preceding breeches pipe, 1 sub-unit connection of preceding breeches pipe has attenuator 5, coil spring 3 installs inside and attenuator 5 of breeches pipe 1 in the front and has constituted bumper shock absorber buffer system jointly, piston rod 6 sets up in urceolus 2, the top of piston rod 6 is equipped with supporting spring and blocks preceding breeches pipe 1 and stretch out urceolus 2, fastening bolt is passed through to the lower part of piston rod 6 and fixes in 2 bottom portions of urceolus.
The spiral spring 3 adopts a variable-stiffness metal spiral spring, the spring characteristic adopts a nonlinear characteristic, the thickness and the density of the spring are changed from top to bottom, the elastic coefficient is not a fixed value, the requirements of 1 person with light load, flat road surface, small rigidity when deformation amount is small, softness and comfort can be met, and the requirements of 2 persons with heavy load, severe road surface, large rigidity when deformation amount is large, and rigidity when bearing is not mounted at the bottom can be met, so that the riding comfort of a vehicle can be obviously improved.
The double oil seals 4 are two oil seals which jointly form a whole oil seal structure, and when the primary seal fails, the secondary seal can still seal, so that the shock absorption oil is prevented from leaking.
Damper 5 divide into free valve and uide bushing, the free valve adopts 65Mn spring steel band preparation, the uide bushing is formed for powder metallurgy or aluminum alloy preparation, the elastic valve piece mainly plays the throttle effect, shock attenuation oil flows from the aperture and produces main resilience resistance, shock attenuation oil only overcomes the deformation amount of deflection of elastic valve piece, just can produce the earial drainage, the uide bushing has shock attenuation oil circulation passageway, preceding bumper shock absorber is at the compression recovery in-process, shock attenuation oil flows to the low pressure chamber from the high pressure chamber through the circulation passageway of uide bushing, through flow in the aperture and produce the impact that the resistance brought in slowing down the driving of preceding bumper shock absorber.
The piston rod 6 adopts a low-carbon alloy piston rod, a piston ring at the top of the piston rod 6 and the double oil seals 4 form two-point positioning, the piston ring arranged at the top of the piston rod 6 and a free valve in a lower end hole of the front fork tube 1 and between the outer circle of the piston rod 6 isolate damping oil, a damper working system is divided into three parts, namely an oil storage cavity, a high-pressure cavity and a low-pressure cavity, the free valve is used as a boundary, and the high-pressure cavity and the low-pressure cavity are alternately changed along with the change of the motion direction of the front fork.
The front fork tube 1 is formed by performing multiple finish rolling on a high-strength alloy steel front fork tube and a hot rolled tube, and the wall thickness of the precision seamless steel tube with the medium wall thickness is more than or equal to 2.5 mm.
The outer cylinder 2 is a cast aluminum alloy outer cylinder.
The front shock absorber mainly performs compression and recovery processes in actual working conditions:
in the compression process, the damping spring is compressed, the front fork tube 1 moves downwards, and the oil storage volume in the outer cylinder 2 is reduced to form a high-pressure cavity; the volume of the middle area between the piston rod 6 and the front fork tube 1 is increased to form a low-pressure cavity. Part of the damping oil flows into the low-pressure cavity through the oil hole on the piston rod 6, so that the lubricating effect on the buffer spring is realized; one part of the damping oil flows through a damper guide sleeve flow passage at the lower end of the front fork pipe 1, when the pressure is high enough, the damping oil overcomes the deflection of the elastic valve plate, and rushes out the guide sleeve flow passage blocked by the elastic valve plate, so that the damping oil enters a low-pressure cavity through a free valve; another part flows into the low pressure chamber through the gap between the front fork 1 and the piston rod 6. The three parts are carried out simultaneously, and the compression resistance in the compression process of the shock absorber is formed together. When the shock absorber continues to be pressed down, damping oil enters the upper end of the front fork tube 1 through a gap between a piston ring on the piston rod 6 and the front fork tube, and meanwhile, the lubricating effect on the damping spring is achieved.
In the process of recovery, the damping spring stretches, the front fork tube 1 moves upwards, the volume of the lower space of the outer cylinder 2 is increased, and a low-pressure cavity is formed; the volumes of the spaces at the upper part of the front fork tube 1 and the middle parts of the front fork tube 1 and the piston rod 6 are increased to form a high-pressure cavity. Part of the damping oil flows into the lower part of the front fork tube 1 through a gap between a piston ring on the piston rod 6 and the front fork tube 1; one part flows into the outer cylinder 2 through the gap between the front fork tube 1 and the piston rod 6; one part extrudes the elastic valve plate through the free valve to cause the elastic valve plate to generate bending deformation or form a gap, so that the elastic valve plate enters the lower part of the outer cylinder 2 through a flow passage in the guide sleeve; the other part flows into the lower part of the outer cylinder 2 through the oil hole on the piston rod 2.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a bumper shock absorber before electric tricycle uses self-adaptation which characterized in that: including preceding breeches pipe (1), urceolus (2), coil spring (3), two oil blanket (4), attenuator (5) and piston rod (6), preceding breeches pipe (1) imbeds urceolus (2) through two oil blanket (4), be equipped with variable pitch damping spring in preceding breeches pipe (1) upper portion breeches pipe, plug screw and sealing washer are installed at preceding breeches pipe (1) top, preceding breeches pipe (1) sub-unit connection has attenuator (5), coil spring (3) are installed and have constituted bumper shock absorber buffer system jointly in the inside of preceding breeches pipe (1) and attenuator (5), piston rod (6) set up in urceolus (2), the top of piston rod (6) is equipped with supporting spring and stops preceding breeches pipe (1) and stretch out urceolus (2), the lower part of piston rod (6) is passed through fastening bolt and is fixed in urceolus (2) bottom portion.
2. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the spiral spring (3) adopts a variable-stiffness metal spiral spring, the spring characteristic adopts a nonlinear characteristic, the thickness and the density of the spring change from top to bottom, and the elastic coefficient is not a fixed value.
3. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the double oil seals (4) form a whole oil seal structure together by two oil seals, and when the primary seal fails, the secondary seal can still seal.
4. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the damper (5) is divided into a free valve and a guide sleeve, the free valve is made of a 65Mn spring steel strip, and the guide sleeve is made of powder metallurgy or aluminum alloy.
5. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the damper is characterized in that the piston rod (6) adopts a low-carbon alloy piston rod, a piston ring at the top of the piston rod (6) and the double oil seals (4) form two-point positioning, the piston ring arranged at the top of the piston rod (6) and a free valve in a lower end hole of the front fork tube (1) and between the outer circle of the piston rod (6) isolate damping oil, and a damper working system is divided into three parts, namely an oil storage cavity, a high-pressure cavity and a low-pressure cavity.
6. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the front fork pipe (1) is formed by performing finish rolling on a high-strength alloy steel front fork pipe and a hot rolled pipe for multiple times, and the wall thickness of the precision seamless steel pipe with the medium wall thickness is more than or equal to 2.5 mm.
7. The adaptive front shock absorber for electric tricycle of claim 1, wherein: the outer cylinder (2) is a cast aluminum alloy outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022815674.0U CN213808640U (en) | 2020-11-30 | 2020-11-30 | Self-adaptive front shock absorber for electric tricycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022815674.0U CN213808640U (en) | 2020-11-30 | 2020-11-30 | Self-adaptive front shock absorber for electric tricycle |
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| CN213808640U true CN213808640U (en) | 2021-07-27 |
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| CN202022815674.0U Active CN213808640U (en) | 2020-11-30 | 2020-11-30 | Self-adaptive front shock absorber for electric tricycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623182A (en) * | 2022-03-28 | 2022-06-14 | 江苏爱玛车业科技有限公司 | Front shock absorber and electric bicycle |
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2020
- 2020-11-30 CN CN202022815674.0U patent/CN213808640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623182A (en) * | 2022-03-28 | 2022-06-14 | 江苏爱玛车业科技有限公司 | Front shock absorber and electric bicycle |
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