WO2020177602A1

WO2020177602A1 - Rapid-folding self-locking mechanism of scooter

Info

Publication number: WO2020177602A1
Application number: PCT/CN2020/076864
Authority: WO
Inventors: 应刚
Original assignee: 永康市酷格科技有限公司
Priority date: 2019-03-06
Filing date: 2020-02-27
Publication date: 2020-09-10
Also published as: CN110422260A

Abstract

Disclosed is a rapid-folding self-locking mechanism of a scooter. The rapid-folding self-locking mechanism comprises a pedal (6), a rocker arm, a locking mechanism, and a gear carrier (4), wherein the gear carrier (4) is mounted on one side of a front end of the pedal (6), the gear carrier (4) is provided with a gear carrier gear (23), the locking mechanism is mounted on the other side of the front end of the pedal (6), the rocker arm is provided with a rocker arm gear (22) meshing with the gear carrier gear (23), the rocker arm gear (22) and the gear carrier gear (23) are pushed by the locking mechanism to enable the gears to mesh and be locked together or be disengaged by the locking mechanism to enable the gears to be separated and unlocked, and when the gears are separated, the rocker arm can be rotated relative to the pedal (6), the rocker arm carrier (22) and the gear carrier gear (23) being tapered bevel gears. The unlocking mode of the rapid-folding self-locking mechanism of a scooter is a semi-automatic mode, whereby unlocking and locking can be realized by means of a lever force by just shifting a locking handle (13), and a gear meshing clearance between the rocker arm gear (22) and the gear carrier gear (23) is not interfered with and influenced by any third component. The gears have self-centering capability, such that the clearance at each instance of meshing is completely eliminated by means of the gear clearance and conical surfaces, and the clearance-free meshing can be realized by just a suitable pressure being applied by the locking handle (13).

Description

Quick folding self-locking mechanism of scooter

Technical field

The invention relates to the field of transportation tools, in particular to a quick folding self-locking mechanism of a scooter.

Background technique

As a new type of transportation tool, scooters have experienced rapid growth in the export market in recent years, and their portability and light weight have been welcomed by users. Become one of the new travel tools after bicycles. Existing solution: The original scooter folder generally uses a connecting rod or a lock pin mechanism to achieve folding. The main defect: The electric scooter folding mechanism of the connecting rod and the lock pin mechanism has a large number of parts, so the accumulated tolerance will cause a certain gap between the folding and unfolding locked states, and because of the special wrist position of the scooter, the gap will be The handle end is magnified 10-20 times, causing the handlebar to shake during driving. Moreover, most scooters cannot be folded under the pressure of their own weight, and it is generally necessary to shake the handle and perform the folding operation forcefully.

Summary of the invention

The purpose of the present invention is to provide a quick folding self-locking mechanism for a scooter in view of the defects of the prior art.

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A quick-folding and self-locking mechanism for a scooter includes a pedal, a rocker arm, a locking mechanism, and a gear seat. The gear seat is mounted on one side of the front end of the pedal, the gear seat is provided with gear seat teeth, and the locking mechanism is installed On the other side of the front end of the pedal, the rocker arm is provided with rocker teeth that mesh with the teeth of the gear seat, and the rocker teeth and the gear seat teeth are pushed by the locking mechanism to lock the teeth between the teeth or the locking mechanism to loosen the teeth. When the teeth are separated and unlocked, the rocker arm can rotate relative to the pedal when the teeth are separated, and the rocker arm teeth and the gear seat teeth are both tapered bevel gears. The tapered bevel gear can ensure that the fit between the teeth does not shift when locking, and any angle can be calibrated and pulled back during the pressing process, and the tapered gear has a tapered slope, which makes the centering effect better

Further, the angle between the side surface of each tooth of the rocker arm tooth and the tooth base tooth and the vertical axis of the tooth center is 12 degrees.

Further, the tooth profile distribution of the rocker teeth and the tooth holder teeth is as follows:

360°÷U÷2=T; U=2T; (U is the number of bisectors of teeth, T is the number of gear teeth)

30(gear diameter mm)×π÷U＞1.5;

360°÷U=equal angle; where U=40,36,30,24,20,18,12,10,8, the number of teeth T=20,18,15,12,10,9,6,5, 4.

Further, when the rocker arm is folded, the fork angle with the pedal is 70° to 90°, (any number from 70° to 90°)÷(360°÷U)=Y, Y is an integer; Y×(360°÷T )=When the folding angle, U=40,36,30,20,18,10,8, the number of teeth T=20,18,15,10,9,5,4, the folding angle is 72°, 80°, 72°, 72°, 80°, 72°, 90°.

Further, the locking mechanism is horizontally rotatably connected with the rocker arm, and when the rocker arm is folded and opened, the teeth of the rocker arm engage with the teeth of the gear holder and are locked.

Further, the locking mechanism is provided with a locking handle, the bottom of the locking handle is provided with a cam, the locking handle rotates in the axial direction of the cam, and the cam is used to push the teeth to engage and lock or the locking mechanism to loosen The teeth are separated and unlocked.

Further, the cam includes a long shaft arc surface and a short shaft arc surface, the long shaft arc surface pushes to lock the teeth between the teeth, and the short shaft arc surface loosens to unlock the teeth separation.

Further, the rocker teeth and the tooth holder teeth are both a 10 degree 36 halved 18-tooth taper bevel gear or a 20 degree 18 halved 9-tooth taper bevel gear.

Further, the tooth thickness of the rocker tooth and the tooth holder tooth is at least 2 mm.

Further, the widths of the tooth top surfaces of the rocker teeth and the tooth holder teeth are both greater than or equal to 1.4 mm.

By adopting the technical solution of the present invention, the beneficial effects of the present invention are: the unlocking of the present invention is in a semi-automatic mode, the unlocking and locking can be realized by leveraging only by turning the locking handle, and the tooth meshing gap between the rocker teeth and the tooth holder teeth is not Interference and influence by any third part. The gear of the present invention has the ability of self-centering, so that the gap of each meshing is completely eliminated through the tooth gap and the conical surface, and the gapless meshing can be realized only by locking the handle and applying appropriate pressure.

Description of the drawings

Figure 1 is a schematic diagram of the unfolded state of a quick-folding self-locking mechanism of a scooter provided by the present invention;

2 is a schematic diagram of a folding state of a quick folding self-locking mechanism of a scooter provided by the present invention;

Figure 3 is an exploded view of the overall structure of a quick folding self-locking mechanism of a scooter provided by the present invention;

4 is a structural diagram of a rocker arm of a quick folding self-locking mechanism of a scooter provided by the present invention;

Figure 5 is a structural diagram of the locking handle of a quick folding self-locking mechanism of a scooter provided by the present invention;

6 is a schematic diagram of the assembly state of the locking handle and the folding seat of the quick folding self-locking mechanism of the scooter provided by the present invention;

7 is a schematic diagram of the tooth meshing surface structure of a quick folding self-locking mechanism of a scooter provided by the present invention;

8 is a cross-sectional view of the teeth of the rocker teeth and the gear holder teeth of the quick folding self-locking mechanism of the scooter provided by the present invention;

9 is a comparative sectional view 1 of the teeth of the rocker arm teeth and the gear holder teeth of a quick folding self-locking mechanism of a scooter provided by the present invention;

Fig. 10 is a comparative sectional view 2 of the teeth of the rocker arm teeth and the gear holder teeth of a quick folding self-locking mechanism of a scooter provided by the present invention.

Among them, 1, rocker arm cover, 2, rocker arm seat, 3, gear seat screw, 4, gear seat, 5, gear seat nut, 6, pedal, 7, pedal screw, 8, folding seat nut, 9, folding seat , 10. Folding seat nut, 11. Locking buckle cover, 12, Locking buckle cover spring, 13, Locking handle, 14, Locking buckle seat, 15, Locking buckle seat screw, 16, Rocker cover locking screw, 17, Shake Arm cover locking countersunk screw, 18, unlocking spring, 19, rotating shaft, 20, rotating shaft circlip, 21, folding handle small shaft, 22, rocker teeth, 23, gear seat teeth, 24, card slot, 25, Cam.

detailed description

The specific embodiments of the specific scheme of the present invention will be further described with reference to the drawings.

As shown in Figures 1-3, a quick-folding self-locking mechanism for a scooter includes a pedal 6, a rocker arm, a locking mechanism, and a gear seat 4. The gear seat 4 is mounted on one side of the front end of the pedal 6, and the gear The seat 4 is provided with gear seat teeth 23, the locking mechanism is installed on the other side of the front end of the pedal 6, the rocker arm is provided with a rocker arm tooth 22 meshing with the gear seat teeth 23, and the rocker arm tooth 22 is connected to the gear seat The teeth 23 are pushed by the locking mechanism to engage and lock between the teeth or the locking mechanism is loosened to unlock and unlock the separation between the teeth. When the teeth are separated, the rocker arm can rotate relative to the pedal 6 and the rocker arm teeth and tooth holder teeth are both Taper bevel gear, as shown in Figure 7. The locking mechanism is horizontally rotatably connected with the rocker arm, and when the rocker arm is folded and opened, the teeth of the rocker arm are meshed and locked with the teeth of the gear holder. The tapered bevel gear can ensure that the fit between the teeth does not shift during locking, and any angle can be calibrated and pulled back during the pressing process, and the bevel gear has a tapered inclination, which makes the centering effect better.

The working conditions during folding determine that the static load of its basic parts is above 100KG and the dynamic load is above 400KG. Therefore, the diameter of the conical bite gear that achieves its structural strength must be greater than 30MM in order to be guaranteed. At the same time, the number of teeth is limited by the manufacturing process. The minimum thickness of a single tooth needs to be 2 mm to ensure the reliability of its structural strength, that is, the minimum tooth thickness of the rocker teeth 22 and the tooth holder teeth 23 is 2 mm. Moreover, the general and comfortable folding angle of the scooter is 70 degrees to 90 degrees, and the tooth profile distribution of the rocker teeth and the gear seat teeth is as follows:

360÷U÷2=T; U=2T;

30(gear diameter mm)×π÷U＞1.5;

The fork angle between the rocker arm and the pedal when folded is 70° to 90°, (any number from 70° to 90°)/ (360÷U)=Y, Y is an integer; Y×(360÷T)=when the folding angle When U=40,36,30,20,18,10,8, the number of teeth T=20,18,15,10,9,5,4, the folding angle is 72°, 80°, 72°, 72° , 80°, 72°, 90°.

T is the number of teeth, T must be an integer, U must be divisible by 2, U is an equal fraction and the number of teeth*2, an equal fraction is actually the number of teeth added by male and female teeth, a flat gear has protruding teeth and recesses, number of teeth + number of female teeth = Equal fraction, protrusion + depression = equal fraction.

360×π÷U is greater than 2. The meaning of this number is the length of the line segment after the circumference is equally divided by U, and also the thickness of the last single tooth.

Take the form of folding on the pedal, the comfort range of the front fork angle is 70 degrees-90 degrees, of which 80 degrees is the golden value, the more you go to the two sides, the worse the comfort. Therefore, the rocker teeth and the gear seat teeth are both a 10 degree 36 halved 18-tooth taper bevel gear or a 20 degree 18 halved 9-tooth taper bevel gear. Among them, the more the number of teeth, the higher the structural strength, the lower the strength of the contact surface, so 10 degrees 36 equally divided 18 teeth is the best choice.

As shown in Fig. 8, the angle between the side surface of each tooth of the rocker tooth and the tooth holder tooth and the vertical axis of the tooth center is 12 degrees. Figures 9, 8-2 are cross-sectional views when the included angle is 8 degrees and 16 degrees, respectively. Since the limit breakaway angle of the tooth is directly related to the width of the tooth top surface, the die-casting material has limited strength. In order to prevent tooth chipping and ensure durability, the tooth top surface width of the rocker tooth and the tooth holder tooth is both greater than or equal to 1.4 mm. The lowest slope of the easiest to get out of the tooth is 8 degrees. According to the formula, the maximum slope of the tooth is 16 degrees. The component force structure of the gear on the network will cause a large amount of scene load to be converted into axial force, causing it to fall off during use. Degree is the best choice.

The locking mechanism is provided with a locking handle 13, and the bottom of the locking handle 13 is provided with a cam 25. The locking handle 13 rotates along the axial direction of the cam 25. The cam 25 is used to push the teeth to engage and lock or the locking mechanism Loosening unlocks the separation between teeth. The cam 25 includes a long shaft arc surface and a short shaft arc surface. The long shaft arc surface pushes the teeth to lock the teeth, and the short shaft arc surface loosens to unlock the teeth.

As shown in Figures 3 and 4, the rocker arm mechanism includes a rocker arm cover 1, a rocker arm seat 2, a rotating shaft 19, and an unlocking mechanism. The rocker arm cover 1 is closed with the rocker arm seat 2, and the rotating shaft 19 The two ends of the rocker arm are respectively installed at the lower part of the rocker arm cover 1 and the rocker arm seat 2, and an unlocking mechanism is provided outside the rotating shaft 19. The unlocking mechanism includes an unlocking spring 18 and a rotating shaft circlip 20. The rotating shaft circlip 20 is arranged on a rotating shaft 19, the rotating shaft 19 is sheathed with an unlocking spring 18, and one end of the unlocking spring 18 is against Rotating shaft circlip 20. The lower part of the rocker arm cover 1 and the rocker arm seat 2 are both provided with shaft holes, and both ends of the rotating shaft 19 are inserted into the shaft holes.

The rotating shaft 19 is provided with a slot 24 at one end close to the rocker tooth 22, and the rotating shaft circlip 20 is provided on the slot 24 at one end of the rotating shaft 19.

The locking mechanism includes a folding seat 9 and a locking part, the folding seat 9 is connected with the pedal 6, the folding seat 9 is provided with a locking part, the bottom of the locking part is connected with the folding seat 9, and the locking part pushes The rocker teeth 22 are forwardly engaged with and locked with the gear seat teeth 23. The locking component includes a locking buckle cover 11, a locking buckle cover spring 12, a locking handle 13, a locking buckle seat 14 and a folding handle shaft 21. The cam 25 at the bottom of the locking handle 13 connects the small shaft 21 to the folding handle by folding. On the seat 9, the upper part of the folding seat 9 is provided with a locking buckle cover spring 12, and the locking buckle cover spring 12 is provided with a locking buckle cover 11 and a locking buckle seat 14. The locking buckle cover 11 cooperates with the folding seat 9 The rocker teeth 22 are pushed forward to engage and lock the gear seat teeth 23.

For example, the inclined surface of the locking buckle cover 11 cooperates with the inclined surface of the folding seat 9 to push the rocker teeth 22 forward to engage with the gear seat teeth 23 and lock.

The assembly process of this embodiment:

The rotating shaft circlip 20 is fixed on the groove of the rotating shaft 19, and the unlocking spring 18 is sleeved on one end of the rotating shaft 19 to resist the rotating shaft circlip 20 and is arranged at the lower part of the rocker arm base 2 and the rocker arm cover 1. The rocker arm cover 1 is covered on the rocker arm base 2 and the rocker arm cover locking screw 16 and the rocker arm cover locking countersunk screw 17 are screwed on.

The tooth holder 4 is arranged on one side of the pedal 6 and covered outside the rocker teeth 22. The tooth holder 4 is provided with tooth holder teeth 23, and the tooth holder screw 3 is screwed.

The locking buckle cover 11 is attached to the front of the locking handle 13 and the locking buckle cover spring 12 is installed, and then the locking buckle base 14 is covered and the locking buckle base screw 15 is screwed on. Then insert the locking handle 13 into the slot of the folding seat 9, as shown in FIG. 6, insert the folding small shaft 21 and sleeve it on one end of the rotating shaft 19, and screw on the folding seat nut 10.

Afterwards, the folding seat nut 8 is installed in the folding seat nut clamping position, and the tooth seat nut 5 is installed in the tooth seat nut clamping position. Place it on the pedal 6 and screw on the pedal screw 7.

The working process of this example: when the locking buckle cover 11 is toggled, the locking buckle cover spring 12 is compressed and the locking position on the locking buckle 11 is disengaged from the locking position on the folding seat 9 and then the locking handle 13 is pulled and the small shaft 21 is around the folding handle Moving in the axial direction, and at the same time, the cam 25 at the lower part of the locking handle 13 will move in the direction of the arcuate surface of the minor axis due to the rotation, leaving room for movement in the direction of the gear seat 4. At this time, the unlocking spring 18 will push the rocker arm cover 1 to drive the rocker arm seat 2 to move in the direction of the folding tooth seat 4. At this time, the rocker arm seat 2 and the gear seat teeth 23 are separated, so that the rocker arm is in the direction of the pedal 6 around the rotation axis 19 Dumped. When dumped to the designated position, the locking handle 13 moves around the folding shaft 21 toward the rocker cover 1.

At the same time, the inclined surface on the locking buckle cover 11 and the inclined surface on the folding seat 9 frictionally push the locking buckle cover 11 to move outward while pushing the rocker arm cover 1 to compress the unlocking spring 18, that is, the arc of the long axis of the cam pushes the arm seat teeth 22 and teeth The meshing of the seat teeth 23. After the locking handle 13 reaches the position-the locking buckle cover spring 12 makes the locking buckle cover 11 fully engage the protruding teeth on the folding seat 9 to achieve re-locking. The unlocking method is realized in reverse steps.

Note that the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope of is determined by the scope of the appended claims.

Claims

A quick-folding and self-locking mechanism for a scooter is characterized in that it comprises a pedal, a rocker arm, a locking mechanism and a gear seat. The gear seat is installed on one side of the front end of the pedal. The gear seat is provided with gear seat teeth. The locking mechanism is installed on the other side of the front end of the pedal, the rocker arm is provided with rocker teeth that mesh with the teeth of the gear seat, and the rocker teeth and the gear seat teeth are pushed by the locking mechanism to make the teeth meshing and locking or locking mechanism Loosening unlocks the separation between the teeth. When the teeth are separated, the rocker arm can rotate relative to the pedal, and the rocker arm teeth and the tooth holder teeth are both taper bevel gears.
The quick-folding and self-locking mechanism of a scooter according to claim 1, wherein the angle between the side surface of each tooth of the rocker tooth and the tooth base tooth and the vertical axis of the tooth center is 12 degrees.
The quick-folding and self-locking mechanism of a scooter according to claim 1, wherein the tooth profile distribution of the rocker teeth and the gear seat teeth is as follows:

360°÷U÷2=T; U=2T; (U is the number of bisectors of teeth, T is the number of gear teeth)

30(gear diameter mm)×π÷U＞1.5;

360°÷U=equal angle; where U=40,36,30,24,20,18,12,10,8, the number of teeth T=20,18,15,12,10,9,6,5, 4.
A quick folding self-locking mechanism for a scooter according to claim 1 or 3, wherein the fork angle of the rocker arm to the pedal when folded is 70° to 90° (any number from 70° to 90°) ÷(360÷U)=Y, Y is an integer; Y×(360÷T)=when folding angle, when U=40,36,30,20,18,10,8, the number of teeth T=20,18,15 , 10, 9, 5, 4, the folding angle is 72°, 80°, 72°, 72°, 80°, 72°, 90°.
The quick-folding and self-locking mechanism for a scooter according to claim 1, wherein the locking mechanism is horizontally rotatably connected with the rocker arm, and when the rocker arm is folded and opened, the rocker arm teeth and the gear seat The teeth are engaged and locked.
A quick folding self-locking mechanism for a scooter according to claim 1, wherein the locking mechanism is provided with a locking handle, the bottom of the locking handle is provided with a cam, and the locking handle rotates in the axial direction of the cam The cam is used to push the teeth to engage and lock or the locking mechanism to loosen and unlock the teeth.
The quick-folding and self-locking mechanism for a scooter according to claim 2, wherein the cam includes a long shaft arc surface and a short shaft arc surface, and the long shaft arc surface pushes the teeth to lock the teeth. The arc surface of the short shaft is loosened to unlock the separation between the teeth.
The quick-folding and self-locking mechanism for a scooter according to claim 1, wherein the rocker teeth and the gear seat teeth are both 10 degrees 36 equals 18 teeth taper bevel gears or 20 degrees 18 equals 9-tooth taper bevel gear.
The quick-folding and self-locking mechanism of a scooter according to claim 1, wherein the thickness of the teeth of the rocker arm teeth and the gear seat teeth is at least 2 mm.
The quick-folding and self-locking mechanism of a scooter according to claim 1, wherein the widths of the tooth top surfaces of the rocker teeth and the tooth holder teeth are both greater than or equal to 1.4 mm.