CN212195770U - Scooter with steering pre-tightening structure - Google Patents

Abstract

A scooter with a steering pre-tightening structure comprises a fixed seat, a knob, a pre-tightening elastic piece and a pre-jacking piece, wherein the fixed seat is fixedly arranged below the front part of a pedal; the knob is transversely screwed into the fixed seat; after the pre-tightening elastic piece and the pre-jacking piece are sequentially placed in the fixed seat, two ends of the pre-tightening elastic piece are respectively jacked on the knob and the pre-jacking piece; the end of the pre-jacking piece close to the front wheel axle is a sharp arc pre-jacking part which is contacted with a concave arc pre-tightening surface on the front surface of the middle part of the front wheel axle; the knob can adjust the pretightning force of the top effect on the pretightning surface of front wheel axle in advance of this piece of ejecting in advance when the rotating to compensate the focus and turn to the elastic component of structure and weaken the unable normal defect of putting right of the front wheel that brings because of elasticity, thereby also can continue keeping the ajusting of front wheel and restoring to the throne of front wheel when guaranteeing scooter long-term use, just also let the user keep fine use throughout and experience when the scooter is played, consequently the utility model discloses a structure is more reasonable.

Description

Scooter with steering pre-tightening structure

Technical Field

The utility model relates to a scooter especially indicates tricycle or four-wheel scooter of two front wheels.

Background

As known, the scooter mainly has two steering modes:

one is that the handle is manually operated to realize left and right steering, and the structure is common on two-wheeled scooters;

the other is to realize left and right steering by the shift of the gravity center of the human body, and the structure is used on a three-wheel or four-wheel scooter with double front wheels. The structure for actually steering by offsetting the center of gravity of the human body adopts elastic pieces (such as springs or elastic soft rubber and the like) at two sides of a steering shaft, when the weight of the human body at the left side or the right side is larger, the elastic piece at one side is pressed to deform more, and the elastic piece at the other side is pressed to deform less, so that the double front wheel assemblies can swing around the steering shaft to realize left turning or right turning. Because the elastic component is after using a period of time, its elasticity can weaken gradually, will influence the pendulum of two front wheels and just reset like this, and then make the scooter can walk partially when going straight, just at this moment must lean on the power of user's this person with the foot to rectify a little, thereby influenced user's use and experienced.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, providing a more reasonable utensil of structure turns to the scooter of pretension structure, it can let the user keep fine use to experience.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a scooter with a steering pre-tightening structure comprises a pedal, a handle rod arranged on the pedal, a handle arranged on the handle rod, a front wheel assembly consisting of a pair of front wheels and a front wheel shaft connecting the front wheels, at least one rear wheel, a gravity center steering structure arranged on the front wheel shaft, a steering shaft arranged below the front end of the pedal and used for connecting the pedal and the front wheel shaft, and a steering pre-tightening structure arranged below the front part of the pedal and positioned in front of the steering shaft, wherein the steering pre-tightening structure comprises a fixed seat, a knob, a pre-tightening elastic piece and a pre-jacking piece, wherein:

the fixed seat is in a transverse U shape and is fixedly arranged below the front part of the pedal;

the knob is transversely screwed into the fixed seat;

after the pre-tightening elastic piece and the pre-jacking piece are sequentially placed in the fixed seat, two ends of the pre-tightening elastic piece respectively jack against the knob and the pre-jacking piece; the end of the pre-jacking piece close to the front wheel axle is a pointed arc pre-jacking part which is contacted with an inwards concave arc pre-tightening surface on the front surface of the middle part of the front wheel axle; the knob can adjust the pretightening force of the pretightening part acting on the pretightening surface of the front wheel shaft when being rotated.

In the improvement scheme of the scooter with the steering pre-tightening structure, the pre-tightening elastic parts are two, namely a soft rubber sleeved outside the inner end of the knob and a pressure spring sleeved on the soft rubber, and two ends of the pre-tightening elastic parts interact with the pre-jacking part and the knob respectively and simultaneously.

In the improvement scheme of the scooter with the steering pre-tightening structure, the soft rubber and the pressure spring are in contact with the soft rubber and the pressure spring through a sliding sleeve sleeved on the middle position of the knob.

Compared with the prior art, the beneficial effects of the utility model are that: because turn to the pretension structure and make the elastic component adjust the effort between ejecting and the front wheel axle in advance through twisting after moving its knob, just can compensate the focus and turn to the elastic component of structure and weaken the unable normal defect of putting right of the front wheel that brings because of elasticity to ensure that the just reset of the just can continue keeping the front wheel of scooter when using for a long time, just also let the user keep fine use throughout when the scooter is played and experience, consequently the utility model discloses a structure is more reasonable.

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

[ description of the drawings ]

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an assembly schematic view of the main parts of the embodiment of the present invention;

FIG. 3 is an enlarged view of section I of FIG. 2;

fig. 4 is a schematic structural diagram of a steering pre-tightening structure according to an embodiment of the present invention.

[ detailed description ] embodiments

A scooter with a steering pre-tightening structure, as shown in fig. 1 to 4, comprises a pedal 1, a handle bar 2 mounted on the pedal 1, a handle 3 arranged on the handle bar 2, a front wheel assembly consisting of a pair of front wheels 4 and a front wheel shaft 5 connecting the pair of front wheels 4, at least one rear wheel 6, a gravity center steering structure 7 arranged on the front wheel shaft 5, and a steering shaft 8 arranged below the front end of the pedal 1 for connecting the pedal 1 and the front wheel shaft 5, wherein an elastic member of the gravity center steering structure is contacted with the lower bottom surface of the front part of the pedal; these structures are basically the same as a scooter that is steered by offsetting the center of gravity, and will not be described in detail herein, except that it further comprises a steering pre-tightening structure 9 installed below the front part of the pedal 1 and in front of the steering shaft 8, and comprising a fixed seat 91, a knob 92, a pre-tightening elastic member 93 and a pre-jacking member 94, wherein:

the fixed seat 91 is in a transverse U shape and is fixedly arranged below the front part of the pedal 1;

said knob 92 is screwed transversely into the fixed seat 91;

after the pre-tightening elastic piece 93 and the pre-jacking piece 94 are sequentially placed in the fixed seat 91, two ends of the pre-tightening elastic piece 93 are respectively jacked on the knob 92 and the pre-jacking piece 94; the pre-top part 94 is a sharp arc pre-top 941 at the end near the front wheel axle 5, and contacts with the concave arc pre-tightening surface 51 on the front surface of the middle part of the front wheel axle 5; the knob 92 can adjust the pretension of the pre-top portion 941 of the pre-top member 94 on the pretensioning surface 51 of the front wheel axle 5 when rotated.

When the front wheel assembly is in a reset state, the center line of the pre-tightening surface 51 of the front wheel shaft 5 and the center line of the steering pre-tightening structure 9 are just on the same straight line and intersect with the axis of the steering shaft 8. When the scooter turns left in the walking process, the center of gravity of the rider leans to the left or the force of feet on the left is large, so that after the left side of the center-of-gravity steering structure 7 is subjected to large pressure, the front wheel shaft 5 can drive the pair of front wheels 4 to swing anticlockwise around the steering shaft 8, and then the scooter can turn left, and at the moment, the arc-shaped pre-tightening surface 51 on the front side of the front wheel shaft 5 slightly swings along the right half of the pre-tightening part 941 of the pre-tightening part 94; similarly, when the scooter is going to turn right during walking, the center of gravity of the rider leans to the right or the feet exert a large force on the right, so that the right side of the center-of-gravity steering structure 7 is pressed by a large force, the front axle 5 can drive the pair of front wheels 4 to swing clockwise around the steering shaft 8, and thus the scooter can turn right, and at the same time, the arc-shaped pre-tightening surface 51 on the front side of the front axle 5 slightly swings along the left half of the pre-tightening part 941 of the pre-tightening part 94. When the person's center of gravity is swung, in addition to the front wheel being swung by the return of the center of gravity steering structure 7, the pre-lift member 94 also helps the front wheel axle 5 to drive the pair of front wheels 4 to swing under the action of the pre-tensioned elastic member 93. After a period of use, the elasticity of the elastic member of the center-of-gravity steering structure 7 is weakened to affect the normal swinging of the front wheel, and the knob 92 can be slightly screwed to slightly increase the pre-tightening force between the pre-jacking member 94 and the front wheel shaft 5, so as to assist the swinging and resetting of the front wheel assembly.

It can be seen from the above that, turn to pretension structure 9 and make pretension elastic component 93 adjust the effort between pretension 94 and the front wheel axle 5 after twisting its knob 92, just can compensate the focus and turn to the unable defect of normally putting of front wheel that the elastic component of structure 7 brought because of elasticity weakens to ensure that the scooter also can continue to keep the ajusting of front wheel to reset during long time use, just also let the user keep fine use throughout when the scooter is played and experience, consequently the utility model discloses a structure is more reasonable.

The pre-tightening elastic member 93 may be a spring or an elastic soft rubber. In this embodiment, as shown in fig. 2 to 4, the two pre-tightening elastic members 93 are a soft rubber 931 and a compression spring 932, and the soft rubber 931 and the compression spring 932 are respectively sleeved on the outer surface of the inner end of the knob, and two ends of the two pre-tightening elastic members interact with the pre-jacking member 94 and the knob 92 respectively, so that the characteristics of small elasticity of the soft rubber and large elasticity of the compression spring are utilized to avoid that the pre-tightening force is too small or too large to affect the swing reset adjustment of the scooter. Here, the soft rubber 931 and the pressure spring 932 are in contact with the soft rubber 931 and the pressure spring 932 through a sliding sleeve 95 sleeved on the middle position of the knob; a shaft shoulder 921 is arranged at the middle position of the knob 92. As shown in fig. 4, the sliding sleeve 95 can only move linearly but not rotate in the seat after being installed in the fixing seat (in this embodiment, as shown in fig. 3, the sliding seat is a cylinder with the upper and lower surfaces flattened, and after being installed in the fixing seat 91, the sliding seat can only move but can not rotate by the limitation of the upper and lower surfaces of the inner hole wall of the fixing seat, and certainly, other structures can be used to realize the linear movement of the sliding sleeve); the sliding sleeve 95 is connected with the knob in a threaded manner, so that the pretightening force can be adjusted by rotating the knob to enable the sliding sleeve 95 to slide in the fixed seat. Of course, the knob can also be in threaded connection with the fixed seat and fixedly connected with the sliding sleeve, so that the pretightening force can be adjusted when the knob is rotated.

Preferably, a screw 96 for limiting the maximum compression length of the pre-tightening elastic element 93 is provided on the fixed seat 91, and is installed on one side of the center line of the knob, so that the maximum moving limit of the sliding sleeve 95 can be limited, besides the forced compression and self-return of the pre-tightening elastic element 93 are not hindered, when the knob is turned to push the sliding sleeve to slide to be stopped by the screw, the sliding sleeve reaches the sliding limit, and the sliding sleeve and the knob can be prevented from being disengaged from the threaded connection.

In this embodiment, as shown in fig. 2, the pedal 1 is composed of a supporting plate 11 and a decorative cover plate 12 covering the supporting plate 11, which not only facilitates the detachment and installation of the steering pre-tightening structure 9, but also makes the scooter more beautiful (because the exposure of most parts of the steering pre-tightening structure 9 can be greatly reduced by the shielding of the decorative cover plate 12).

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the present disclosure, but rather to limit the scope thereof by the appended claims.

Claims (4)

1. The utility model provides a scooter of utensil pretension structure that turns to, including the footboard, install the handle pole on this footboard, establish the handle on this handle pole, the front wheel subassembly that comprises a pair of front wheels and the front wheel axle that couples together this pair of front wheels, at least one rear wheel, establish the focus on this front wheel axle and turn to the structure, and establish the below of this footboard front end and be used for the steering spindle that couples together this footboard and front wheel axle, its characterized in that still includes and installs the pretension structure that turns to that is located this steering spindle the place ahead below the front portion of this footboard, it includes fixing base, knob, pretension elastic component and ejecting in advance, wherein:

the fixed seat is in a transverse U shape and is fixedly arranged below the front part of the pedal;

the knob is transversely screwed into the fixed seat;

after the pre-tightening elastic piece and the pre-jacking piece are sequentially placed in the fixed seat, two ends of the pre-tightening elastic piece respectively jack against the knob and the pre-jacking piece; the end of the pre-jacking piece close to the front wheel axle is a pointed arc pre-jacking part which is contacted with an inwards concave arc pre-tightening surface on the front surface of the middle part of the front wheel axle; the knob can adjust the pretightening force of the pretightening part acting on the pretightening surface of the front wheel shaft when being rotated.

2. The scooter with steering pre-tightening structure as claimed in claim 1, wherein the pre-tightening elastic members include two soft rubber members respectively fitted over the inner end of the knob and a compression spring fitted over the soft rubber members, and both ends of the two soft rubber members respectively interact with the pre-jacking member and the knob at the same time.

3. The scooter with the steering pre-tightening structure as claimed in claim 2, wherein the flexible rubber and the compression spring are in contact with each other through a sliding sleeve sleeved on the middle portion of the knob.

4. The scooter with steering pre-tightening structure as claimed in any one of claims 1 to 3, wherein a screw for limiting the maximum compression length of the pre-tightening elastic member is provided on the fixing base and is installed on one side of the center line of the knob.

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