CN112172997A

CN112172997A - Scooter with damping device

Info

Publication number: CN112172997A
Application number: CN202011230712.4A
Authority: CN
Inventors: 刘光锐; 娄永信
Original assignee: Ningbo Shengheng Industrial Design Co ltd
Current assignee: Ningbo Shengheng Industrial Design Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-01-05

Abstract

The invention discloses a scooter with a damping device, which comprises a pedal, a front wheel, a rear wheel and a handle, wherein the front wheel is arranged at the front end of the pedal, the handle is arranged at the upper end of the front wheel, and the rear wheel is arranged at the rear end of the pedal through a damping mechanism; this scooter with damping device compares traditional scooter's damping device, cooperatees through setting up triangle piece, connecting rod and elastic mechanism, when the highway section of jolting, the rear wheel atress upwards lifts up, and it is rotatory to drive the rocking arm, and triangle piece and connecting rod follow the displacement rotation to under the same displacement circumstances of wheel, the device can effectively enlarge compression angle, and shock attenuation efficiency promotes about 70%, can optimize the shock attenuation effect greatly.

Description

Scooter with damping device

Technical Field

The invention relates to the technical field of vehicles, in particular to a scooter with a damping device.

Background

Electric scooters are a new form of skateboard movement following a traditional skateboard. The electric scooter safety ring protects, and very the energy can be saved charges fast and the journey ability is long, compares with electric bicycle, and whole car is handsome in appearance, convenient operation, and mobility is good, and is smaller and more exquisite, and portable has received people's general liking, foresees in the future soon, uses electric scooter to go on a journey to be a trend.

The scooter in the existing market has the advantages that various electric vehicles with damping devices added on front forks or rear forks of the electric vehicles are pushed in the market for reducing jolting in driving, and the traditional electric vehicle faucet is connected with wheels through the front forks with the damping devices. Damping device includes hydraulic pressure guide arm and the outer shock absorber spring of hydraulic pressure guide arm is located to the cover usually, through hydraulic pressure guide arm and shock absorber spring shock attenuation simultaneously, but this direct-connected's damper shock attenuation effect is not good, experiences at the highway section of jolting poor.

Disclosure of Invention

The invention aims to provide a scooter with a damping device, and aims to solve the technical problems that the existing direct-connected damping mechanism in the background technology is poor in damping effect and poor in experience in bumpy road sections.

In order to achieve the purpose, the invention provides the following technical scheme: a scooter with a damping device comprises a pedal, a front wheel, a rear wheel and a handle, wherein the front wheel is arranged at the front end of the pedal, the handle is arranged at the upper end of the front wheel, and the rear wheel is arranged at the rear end of the pedal through a damping mechanism;

damper includes back pad base, rocking arm, three hornblocks, elastic mechanism and connecting rod, back pad base front end and footboard fixed connection, back pad base bilateral symmetry is provided with the rocking arm, rocking arm one end is connected with back pad base through first revolute pair, and its other end and rear wheel joint, back pad base lower extreme passes through the second revolute pair and is connected with three hornblocks, three hornblock lower extreme passes through the third revolute pair and is connected with the connecting rod, the connecting rod other end passes through the fourth revolute pair and is connected with the rocking arm, be provided with elastic mechanism between back pad base and the three hornblocks, the elastic mechanism lower extreme passes through the fifth revolute pair and is connected with three hornblocks, and its upper end is connected with back pad base through the sixth revolute pair.

Preferably, the elastic mechanism comprises a damping shaft, a lower baffle, an adjusting knob and a damping spring, the lower end of the damping shaft is provided with the lower baffle, the outer side of the damping shaft is provided with an external thread, the adjusting knob is in threaded connection with the damping shaft, the damping spring is arranged between the lower baffle and the adjusting knob, and the outer side of the damping shaft is sleeved with the damping spring.

Preferably, the first rotating pair comprises a rocker arm rotating shaft inserted in the rear cushion base and the rocker arm, a brass washer sleeved outside the rocker arm rotating shaft, and a nut used for fixing the rocker arm.

Preferably, the second revolute pair and the sixth revolute pair comprise rotary shafts, threaded holes are formed in two ends of each rotary shaft, bolts are installed in the threaded holes, and copper sleeves are installed between the bolts and the rotary shafts.

Preferably, the third revolute pair and the fifth revolute pair comprise an outer pin and an inner pin, the outer pin is a cylindrical pin with an external thread arranged on the smooth inner side of the outer circumferential surface, the inner pin is a cylindrical pin with an external thread arranged on the outer side, and the outer pin and the inner pin are in threaded fit.

Preferably, the fourth revolute pair comprises a pin hole column arranged on the rocker arm and a rotary shaft with two ends inserted into the pin hole column, and a step used for limiting the movement of the connecting rod is arranged in the middle of the rotary shaft.

Preferably, the number of the connecting rods is two, and the connecting rods are symmetrically arranged on two sides of the triangular block and two sides of the step.

Compared with the prior art, the invention has the beneficial effects that:

1. the damping device has the effects that when the whole vehicle drives through a bumpy road section, the wheels are impacted by the road surface, one part of the impact is absorbed by the deformation of the elastic mechanism (the spring damper), and the other part of the impact is directly reflected in the integral displacement (upward movement relative to the road surface) of the wheels to generate vibration. This scooter with damping device, compare traditional scooter's damping device, through setting up three hornblocks, connecting rod and elastic mechanism cooperate, when the highway section of jolting, the rear wheel atress upwards lifts up, it is rotatory to drive the rocking arm, it is rotatory that rocking arm displacement is followed to three hornblocks and connecting rod, later upwards promote elastic mechanism through three hornblock apex angles and make its compression, the device compares rocking arm and elastic mechanism lug connection's shock attenuation mode, enlarge the deformation effect of elastic mechanism (spring damper), in order to reach and weaken the wheel and shift up the trend, the conduction route of whole vibrations has been prolonged, vibrations have been weakened, let the user have better effect of riding. Therefore, under the condition that the wheels have the same displacement, the device can effectively amplify the compression amount, the damping efficiency is improved by about 70 percent, and the damping effect can be greatly optimized;

2. this scooter with damping device, adjust knob and damping shaft threaded connection, it makes it upwards or move down to rotate, thereby adjust damping spring's elasticity size, the brass packing ring and the cooperation of rocking arm pivot of setting, reducible wearing and tearing, and the service life is prolonged, this structure is easy to assemble or dismantle, can make simultaneously to connect more stably, the inner pin inserts outer round pin rather than screw-thread fit, moreover, the steam generator is simple in structure, it is convenient fixed, the symmetry sets up in two connecting rods of three hornblocks and step both sides, can make this structure more stable, the atress is even.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a hidden side rocker arm structure according to the present invention;

FIG. 3 is a schematic view of a partial structure of the damping mechanism according to the present invention;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 2 in accordance with the present invention;

FIG. 5 is a cross-sectional view taken at B-B of FIG. 2 in accordance with the present invention;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 2 in accordance with the present invention;

FIG. 7 is a cross-sectional view taken at E-E of FIG. 2 in accordance with the present invention;

FIG. 8 is a schematic view of a point of the damping mechanism of the present invention;

FIG. 9 is a geometric state diagram of the damping mechanism of the present invention;

FIG. 10 is a geometric state diagram of the damping mechanism of the present invention;

FIG. 11 is a geometric state diagram of the damping mechanism of the present invention;

FIG. 12 is a geometric state diagram of the damping mechanism of the present invention;

FIG. 13 is a schematic view of a conventional direct-coupled damping mechanism for taking points;

FIG. 14 is a geometric state diagram of a conventional direct-coupled damper mechanism;

FIG. 15 is a graph comparing the compression of the damping spring of the present invention with the compression of a conventional direct-coupled damping spring.

In the figure: 1. a pedal; 2. a front wheel; 3. a rear wheel; 4. a grip; 5. a damping mechanism; 6. a rear cushion base; 7. a rocker arm; 8. a first rotating pair; 81. a rocker arm shaft; 82. a brass washer; 83. a nut; 10. a triangular block; 11. a second revolute pair; 111. a rotating shaft; 171. a rotating shaft; 112. a bolt; 172. a bolt; 113. a copper sleeve; 173. a copper sleeve; 12. an elastic mechanism; 121. a shock-absorbing shaft; 122. a lower baffle plate; 123. adjusting a knob; 124. a damping spring; 13. a third revolute pair; 131. an outer pin; 161. an outer pin; 132. an inner pin; 162. an inner pin; 14. a connecting rod; 15. a fourth revolute pair; 151. a pin hole post; 152. a rotating shaft; 1521. a step; 16. a fifth revolute pair; 17. and a sixth revolute pair.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a scooter with a shock absorption device comprises a pedal 1, a front wheel 2, a rear wheel 3, a handle 4, a shock absorption mechanism 5, a rear cushion base 6, a rocker arm 7, a first rotating pair 8, a rocker arm rotating shaft 81, a brass washer 82, a nut 83, a triangular block 10, a second rotating pair 11, rotating

shafts

111 and 171,

bolts

112 and 172,

copper sleeves

113 and 173, an elastic mechanism 12, a shock absorption shaft 121, a lower baffle 122, an adjusting knob 123, a shock absorption spring 124, a third rotating pair 13,

outer pins

131 and 161,

inner pins

132 and 162, a connecting rod 14, a fourth rotating pair 15, a pin hole column 151, a rotating shaft 152, a step 1521, a fifth rotating pair 16 and a sixth rotating pair 17, wherein the front wheel 2 is installed at the front end of the pedal 1, the handle 4 is installed at the upper end of the front wheel 2, and the rear wheel 3 is installed at the rear end of the pedal 1 through the shock absorption mechanism 5;

the damping mechanism 5 comprises a rear cushion base 6, rocker arms 7, triangular blocks 10, an elastic mechanism 12 and a connecting rod 14, the front end of the rear cushion base 6 is fixedly connected with the pedal 1, the rocker arms 7 are symmetrically arranged on two sides of the rear cushion base 6, one end of each rocker arm 7 is connected with the rear cushion base 6 through a first rotating pair 8, the other end of each rocker arm is clamped with the rear wheel 3, the lower end of the rear cushion base 6 is connected with the triangular blocks 10 through second rotating pairs 11, the lower end of each triangular block 10 is connected with the connecting rod 14 through a third rotating pair 13, the other end of each connecting rod 14 is connected with the corresponding rocker arm 7 through a fourth rotating pair 15, the elastic mechanism 12 is arranged between the rear cushion base 6 and the triangular blocks 10, the lower end of each elastic mechanism 12 is connected with the corresponding triangular block 10 through a fifth rotating pair 16, and the upper end of each elastic mechanism is.

Further, the elastic mechanism 12 includes a damping shaft 121, a lower baffle 122, an adjusting knob 123 and a damping spring 124, the lower end of the damping shaft 121 is provided with the lower baffle 122, the outer side of the damping shaft 121 is provided with an external thread, the adjusting knob 123 is in threaded connection with the damping shaft 121, the damping spring 124 is arranged between the lower baffle 122 and the adjusting knob 123, the damping spring 124 is sleeved on the outer side of the damping shaft 121, the adjusting knob is in threaded connection with the damping shaft, and the adjusting knob can rotate to move upwards or downwards, so that the elastic force of the damping spring can be adjusted.

Furthermore, the first rotating pair 8 comprises a rocker arm rotating shaft 81 inserted in the rear cushion base 6 and the rocker arm 7, a brass washer 82 sleeved on the outer side of the rocker arm rotating shaft 81 and a nut 83 used for fixing the rocker arm 7, and the arranged brass washer is matched with the rocker arm rotating shaft, so that the abrasion can be reduced, and the service life can be prolonged.

Furthermore, the second revolute pair 11 and the sixth revolute pair 17 comprise rotating

shafts

111 and 171, threaded holes are formed in two ends of each

rotating shaft

111 and 171,

bolts

112 and 172 are installed in the threaded holes, and

copper sleeves

113 and 173 are installed between the

bolts

112 and 172 and the

rotating shafts

111 and 171.

Furthermore, the third revolute pair 13 and the fifth revolute pair 16 comprise

outer pins

131 and 161 and

inner pins

132 and 162, the

outer pins

131 and 161 are cylindrical pins with outer circumferential surfaces smooth and inner sides provided with internal threads, the

inner pins

132 and 162 are cylindrical pins with outer threads on outer sides, the

outer pins

131 and 161 are in threaded fit with the

inner pins

132 and 162, and the inner pins are inserted into the outer pins to be in threaded fit with the outer pins.

Furthermore, the fourth rotating pair 15 includes a pin hole column 151 disposed on the rocker arm 7 and a rotating shaft 152 with two ends inserted into the pin hole column 151, the middle of the rotating shaft 152 is provided with two steps 1521 for limiting the movement of the connecting rods 14, the number of the connecting rods 14 is two, the two connecting rods are symmetrically disposed on two sides of the triangular block 10 and the step 1521, and the two connecting rods are symmetrically disposed on two sides of the triangular block and the step, so that the structure is more stable and the stress is uniform.

The working principle is as follows: firstly, in the driving process, the rear wheel 3 is stressed to generate vibration and moves upwards to drive the rocker arm 7 to rotate upwards. The rocker arm 7 rotates around the rocker arm rotating shaft 81 connected with the rear cushion base 6 to drive the connecting rod 14 to rotate upwards, and the connecting rod 14 presses the triangular block 10 to rotate upwards at an angle larger than the rotating angle of the rocker arm 7, so that the triangular block 10 rotates around the second rotating pair 11. One corner of the triangular block 10 is connected with the lower end of the elastic mechanism 12, and the other end is fixed on the rear cushion base 6. The lower end of the elastic mechanism 12 is extruded upwards to generate spring deformation, so that the damping effect is achieved.

Compare traditional direct-connected damping device, do as follows verification and contrast: as shown in fig. 8, assuming that the first revolute pair is a point a, the second revolute pair is a point B, the third revolute pair is a point C, the fourth revolute pair is a point D, the fifth revolute pair is a point N, and the sixth revolute pair is a point M, a geometric state diagram is drawn as shown in fig. 9, and it can be known from the motion description that: AB. The lengths of three sides of BC and CD are fixed, AD rotates an angle X first, AB is fixed, quadrilateral ABCD deforms accordingly, BC and CD rotate accordingly, BC rotates an angle Y accordingly. And then according to the triangle block CBN, the edge BN and the edge BC rotate by the same angle Y, one edge BM of the triangle BMN is fixed, the length of the BN is unchanged, and the triangle BMN rotates by the angle Y to obtain a new triangle, wherein the difference value before and after the deformation of the MN is the spring compression amount.

Mathematical analysis was performed as follows:

(1): as shown in FIG. 10, the quadrilateral ABCD analysis is taken and recorded as AB length a, BC length b, CD length c, and AD length d. The angle BAD is less than A; BD is connected and its length is noted as P. As shown in fig. 11, the angle ABD is less than 1, and the angle CBD is less than 2;

then

AD is obtained by rotating the AD by X degrees₁And rotating BC by Y degrees to obtain BC₁Recording the angle BAD₁Is < A₁；

A₁＝A+X，BD₁Length P₁Angle ABD₁Is less than 3 and angle C₁BD₁Is less than 4.

Then

Y＝(∠1+∠2)-(∠3+∠4)；

(2) As shown in fig. 12, a triangular BMN is taken for analysis,

recording the BM length as n, the BN length as m, the MN length as Q, the angle MBN as < B,

then

Rotating BN by Y degrees to obtain BN₁Angle MBN₁Is < B₁，MN₁Length of Q₁，

Then < B₁＝∠B-Y；

Final spring compression Q-Q₁。

The following analysis of the conventional elastic mechanism and rocker arm direct-connected structure shows that, as shown in fig. 13, during driving, the rear wheel 3 is forced to vibrate and displace upward to drive the rocker arm 7 to rotate upward. The rocker arm 7 rotates around the rocker arm rotating shaft 81 connected with the rear cushion base 6, the lower end of the elastic mechanism 12 is fixedly connected to the rocker arm 7, the elastic mechanism 12 is upwards extruded by the lower end along with the rotating angle of the rocker arm 7, and the damping spring deforms to play a damping role.

And (5) taking points as shown in the figure 13, and analyzing the motion stroke. Wherein note: the rotating shaft of the rocker arm is point B, the upper fulcrum of the damping spring is M, and the lower fulcrum of the damping spring is N. Then, as shown in fig. 13, from the motion description, it can be known that: the rotating shaft of the rocker arm rotates upwards by Y degrees, namely the BN moves upwards to obtain the BN₁And the BM line is kept still to obtain a new triangular BMN₁Wherein MN and MN₁The difference is the spring compression.

Mathematical analysis was performed as follows:

(1) taking a triangular BMN for analysis,

the BM length is n, the BN length is m, the MN length is Q,

the angle MBN is < B,

then

Rotating BN by Y degrees to obtain BN₁；

Angle MBN₁Is < B₁；

MN₁Length of Q₁；

Then < B₁＝∠B-Y；

Final spring compression Q-Q₁。

As shown in fig. 15, the compression amount of the elastic mechanism of the device is compared with that of the traditional direct connection type device, the abscissa in the figure is the rotation angle of the rocker arm, and the ordinate is the compression amount of the elastic mechanism, as can be seen from fig. 15, under the condition that the rocker arm rotates at the same angle, the compression amount of the elastic mechanism of the device is greater than that of the traditional direct connection type device, so that the device can obtain better shock absorption effect on a bumpy road section, and the shock absorption device has the effect that when the whole vehicle drives through the bumpy road section, a part of shock is absorbed by the deformation of the elastic mechanism (spring shock absorber), and the other part of shock is directly reflected on the whole displacement of the wheel (moves upwards relative to the road surface), so as to generate shock. This scooter with damping device, compare traditional scooter's damping device, through setting up three hornblocks, connecting rod and elastic mechanism cooperate, when the highway section of jolting, the rear wheel atress upwards lifts up, it is rotatory to drive the rocking arm, it is rotatory that rocking arm displacement is followed to three hornblocks and connecting rod, later upwards promote elastic mechanism through three hornblock apex angles and make its compression, the device compares rocking arm and elastic mechanism lug connection's shock attenuation mode, enlarge the deformation effect of elastic mechanism (spring damper), in order to reach and weaken the wheel and shift up the trend, the conduction route of whole vibrations has been prolonged, vibrations have been weakened, let the user have better effect of riding. Therefore, under the condition that the wheels have the same displacement, the device can effectively amplify the compression amount, the damping efficiency is improved by about 70%, and the damping effect can be greatly optimized.

In the embodiments of the present application, the descriptions of the directional terms such as "front", "back", "left" and "right" are only described according to the directions shown in the drawings shown in the present application, and are not limited to the scope of the claims of the present application, and in the specific implementation process, other similar or similar embodiments may be obtained by correspondingly modifying the embodiments according to the embodiments, and all of the embodiments are within the scope of the present application, and the descriptions of the other similar or similar embodiments are not repeated in the present application.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A scooter with a shock-absorbing device comprises a pedal (1), a front wheel (2), a rear wheel (3) and a handle (4), and is characterized in that: the front end of the pedal (1) is provided with a front wheel (2), the upper end of the front wheel (2) is provided with a handle (4), and the rear end of the pedal (1) is provided with a rear wheel (3) through a damping mechanism (5);

the damping mechanism (5) comprises a rear cushion base (6), a rocker arm (7), three corner blocks (10), an elastic mechanism (12) and a connecting rod (14), the front end of the rear cushion base (6) is fixedly connected with the pedal (1), the rocker arms (7) are symmetrically arranged on two sides of the rear cushion base (6), one end of each rocker arm (7) is connected with the rear cushion base (6) through a first revolute pair (8), the other end of each rocker arm is connected with a rear wheel (3) in a clamping manner, the lower end of the rear cushion base (6) is connected with the three corner blocks (10) through a second revolute pair (11), the lower end of each three corner block (10) is connected with the connecting rod (14) through a third revolute pair (13), the other end of the connecting rod (14) is connected with the rocker arm (7) through a fourth revolute pair (15), the elastic mechanism (12) is arranged between the rear cushion base (6) and the three corner blocks (10), and the lower end of the elastic mechanism (12) is connected with the three corner blocks (10) through, the upper end of the rear cushion is connected with the rear cushion base (6) through a sixth revolute pair (17).

2. A scooter with shock absorbing means as claimed in claim 1, wherein: elastic mechanism (12) are including damping axle (121), lower separation blade (122), adjust knob (123) and damping spring (124), damping axle (121) lower extreme is provided with separation blade (122) down, the damping axle (121) outside is provided with the external screw thread, adjust knob (123) and damping axle (121) threaded connection, be provided with damping spring (124) between separation blade (122) and adjust knob (123) down, the damping spring (124) cover is located the damping axle (121) outside.

3. A scooter with shock absorbing means as claimed in claim 1, wherein: the first rotating pair (8) comprises a rocker arm rotating shaft (81) which is inserted in the rear cushion base (6) and the rocker arm (7), a brass washer (82) sleeved on the outer side of the rocker arm rotating shaft (81), and a nut (83) used for fixing the rocker arm (7).

4. A scooter with shock absorbing means as claimed in claim 1, wherein: the second revolute pair (11) and the sixth revolute pair (17) comprise rotary shafts (111, 171), threaded holes are formed in two ends of each rotary shaft (111, 171), bolts (112, 172) are installed in the threaded holes, and copper sleeves (113, 173) are installed between the bolts (112, 172) and the rotary shafts (111, 171).

5. A scooter with shock absorbing means as claimed in claim 1, wherein: the third rotating pair (13) and the fifth rotating pair (16) comprise outer pins (131, 161) and inner pins (132, 162), the outer pins (131, 161) are cylindrical pins with outer circumferential surfaces provided with internal threads on smooth inner sides, the inner pins (132, 162) are cylindrical pins with outer threads on outer sides, and the outer pins (131, 161) are in threaded fit with the inner pins (132, 162).

6. A scooter with shock absorbing means as claimed in claim 1, wherein: the fourth rotating pair (15) comprises a pin hole column (151) arranged on the rocker arm (7) and a rotating shaft (152) with two ends inserted into the pin hole column (151), and a step (1521) used for limiting the movement of the connecting rod (14) is arranged in the middle of the rotating shaft (152).

7. A scooter with shock absorbing means as claimed in claim 6 wherein: the number of the connecting rods (14) is two, and the connecting rods are symmetrically arranged on two sides of the triangular block (10) and the step (1521).