Quick assembly device of scooter base and handlebar support

Abstract

The application belongs to the technical field of quick assembly, and relates to a quick assembly device for a hand-held scooter base and a handlebar support. The application comprises a fixing seat, a screwdriver bit and a mounting unit. The fixing seat is provided with a placing part for placing the scooter base and the handlebar support. A bolt machine is slidably arranged above the fixing seat, and the mounting unit is mounted at the lower end of the bolt machine. The mounting unit comprises a guide piece and a limiting assembly. The guide piece is coaxially fixedly connected with the bolt machine, is matched with the screwdriver bit, and has a polygonal cross section. The limiting assembly is matched with the guide piece. When the screwdriver bit is mounted on the mounting unit through the guide piece, the limiting assembly clamps and fixes the screwdriver bit, and simultaneously makes the screwdriver bit have a tendency of being twisted relative to the guide piece, so that the outer side of the screwdriver bit extrudes the inner wall of the guide piece, increases the friction between the screwdriver bit and the guide piece, further fixes the screwdriver bit, and prevents the screwdriver bit from vertically sliding relative to the guide piece.

Description

Technical Field

[0001] This invention belongs to the field of rapid assembly technology and relates to a rapid assembly device for a hand-held scooter base and handlebar bracket. Background Technology

[0002] Hand-held scooters, with their handlebars for easy control, are popular and represent the mainstream type of scooter on the market. The handlebars connect to the scooter's base via a handlebar bracket. For easy maintenance and replacement of the handlebar bracket, the bracket and base are typically connected using bolts and nuts. When installing the bolts, a bolting machine uses a screwdriver bit to rotate the bolt, thus completing the installation. For quick installation and replacement, the screwdriver bit is usually inserted directly into the bolting machine, allowing it to slide vertically relative to the machine.

[0003] To address the aforementioned problems, this invention proposes a quick assembly device for the base and handlebar bracket of a hand-held scooter. Summary of the Invention

[0004] To address the problems existing in the background art, the present invention proposes a quick assembly device for the base and handlebar bracket of a hand-held scooter.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] The quick assembly device for the base and handlebar bracket of a hand-held scooter includes: a fixed base, screwdriver bits, and an installation unit for mounting the screwdriver bits; the fixed base has a placement part for placing the scooter base and handlebar bracket; a bolting machine is slidably mounted above the fixed base, and the installation unit is mounted at the lower end of the bolting machine; the installation unit includes a guide and a limiting component; the guide is coaxially fixed to the bolting machine, the guide is adapted to the screwdriver bits, and the cross-section of the guide is polygonal; the limiting component cooperates with the guide.

[0007] When the screwdriver bit passes through the guide and is installed onto the mounting unit, the limiting component clamps and fixes the screwdriver bit. At the same time, the limiting component causes the screwdriver bit to have a tendency to rotate relative to the guide, so that the outer edge of the screwdriver bit exerts a pressing force on the guide, thereby increasing the friction between the screwdriver bit and the guide, and further fixing the screwdriver bit.

[0008] Furthermore, the lower end of the bolting machine is equipped with a mounting base that rotates. The bolting machine drives the mounting base to rotate, and at the same time, the bolting machine drives the mounting base to move up and down.

[0009] Furthermore, the guide component includes a fixing sleeve, which is fixedly installed below the mounting base by a fixing rod, and the fixing sleeve is coaxially arranged with the mounting base;

[0010] The limiting assembly includes a first limiting sleeve and a first clamping member. The first limiting sleeve is coaxially rotatable below the mounting base via a first rotating shaft. The first limiting sleeve is located at the upper end of the fixed sleeve and is adapted to a screwdriver bit. An inclined surface is provided at the lower end of the inner side of the first limiting sleeve, and the lower end of the inclined surface is inclined outward. A first torsion spring is sleeved on the first rotating shaft and is fixedly connected between the mounting base and the first limiting sleeve. A first clearance groove is provided on each side of the first limiting sleeve, and a first clamping member is slidably disposed inside and outside each first clearance groove.

[0011] Furthermore, the first clamping member includes a first clamping block, which is slidably disposed in a corresponding first clearance groove. The lower end of the first clamping block facing the axis of the first limiting sleeve has a first inclined surface, and the lower end of the first inclined surface is inclined outward. A first rectangular slide rod is fixedly connected to the other side of the first clamping block. A sliding hole is provided on the first limiting sleeve to slide with the first rectangular slide rod. The end of the first rectangular slide rod away from the first clamping block passes through the sliding hole and extends to the outside of the first limiting sleeve.

[0012] A first baffle is fixedly connected to one end of the first rectangular slide rod that extends outside the first limiting sleeve. A first spring is fixedly connected between the first baffle and the first limiting sleeve, and the first spring is sleeved on the first rectangular slide rod.

[0013] Furthermore, the guide component is a second limiting sleeve, which is coaxially fixed to the lower end of the mounting base; the second limiting sleeve is adapted to the screwdriver bit, and the horizontal cross-section of the second limiting sleeve is polygonal;

[0014] Each side of the second limiting sleeve is provided with a second clearance groove, and multiple second clearance grooves are at the same height and are offset counterclockwise to the side they are located on; each second clearance groove is provided with a limiting component; the limiting component includes a second clamping block, a sliding sleeve, and a second rectangular sliding rod;

[0015] The second clamping block is slidably disposed within the second clearance groove. A second inclined surface is formed at the lower end of the inward-facing side of the second clearance groove, with the lower end of the second inclined surface tilting outwards. A sliding sleeve is rotatably disposed within the second clearance groove via a second rotating shaft, which is vertically positioned. A second torsion spring is fitted onto the second rotating shaft, and a first torsion spring is fixedly connected between the second limiting sleeve and the sliding sleeve. One end of the second rectangular sliding rod is hinged to the second clamping block via a first hinge shaft, which is vertically positioned. A third torsion spring is fitted onto the first hinge shaft, with one end of the third torsion spring fixedly connected to the second clamping block and the other end fixedly connected to the second rectangular sliding rod. The other end of the second rectangular sliding rod slides through the sliding sleeve and extends outside the second limiting sleeve.

[0016] A second baffle is fixedly connected to one end of the second rectangular slide rod outside the second limiting sleeve. A second spring is fixedly connected between the second baffle and the slide sleeve, and the second spring is sleeved on the second rectangular slide rod.

[0017] Furthermore, one end of the scooter base has a slanted bar with multiple first mounting holes on the slanted bar, and the multiple first mounting holes are on the same straight line; one side of the handlebar bracket has a protrusion with multiple second mounting holes on the protrusion, and the first mounting holes and the second mounting holes correspond one-to-one.

[0018] The placement section includes a first placement slot for placing the scooter base, a second placement slot for placing the diagonal bar, and a third placement slot for placing the handlebar bracket; one end of the second placement slot is connected to the first placement slot, and the other end of the second placement slot is connected to the third placement slot.

[0019] Multiple nut grooves are provided on the bottom wall of the placement part, and the multiple nut grooves are on the same straight line; the multiple nut grooves correspond one-to-one with multiple first mounting holes. When the scooter base and handlebar bracket are placed in the placement part, the nut grooves and the corresponding first mounting holes and second mounting holes are on the same vertical line.

[0020] Each nut slot has a groove at the bottom.

[0021] Furthermore, a support frame is fixedly connected to one end of the fixed base, and an electric slide rail is installed on the support frame. An electric slider is installed in conjunction with the electric slide rail, and the bolting machine is fixedly installed on the electric slider. The sliding direction of the bolting machine is directly above the line where the multiple nut grooves are located.

[0022] Compared with the prior art, the present invention has the following beneficial effects: when the screwdriver bit passes through the guide and is installed on the mounting unit, the limiting component clamps and fixes the screwdriver bit. At the same time, the limiting component makes the screwdriver bit have a tendency to twist relative to the guide, thereby causing the outer edge of the screwdriver bit to press against the inner wall of the guide, increasing the friction between the screwdriver bit and the guide, further fixing the screwdriver bit and preventing the screwdriver bit from sliding vertically relative to the guide. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the scooter base and handlebar bracket in this invention;

[0025] Figure 3 This is a schematic diagram of the structure of the fixing base in this invention;

[0026] Figure 4 In this invention Figure 3 Enlarged view of part A;

[0027] Figure 5 This is a schematic diagram showing the position of the electric slide rail in this invention;

[0028] Figure 6This is an external schematic diagram of the mounting unit in Embodiment 1 of the present invention;

[0029] Figure 7 This is a cross-sectional view of the installation unit in Embodiment 1 of the present invention;

[0030] Figure 8 This is a bottom view of the installation unit in Embodiment 1 of the present invention;

[0031] Figure 9 This is an external schematic diagram of the mounting unit in Embodiment 2 of the present invention;

[0032] Figure 10 This is a cross-sectional view of the installation unit in Embodiment 2 of the present invention;

[0033] Figure 11 This is a schematic diagram of the screwdriver bit structure in this invention.

[0034] In the diagram: 1. Fixed base; 2. First placement slot; 3. Second placement slot; 4. Third placement slot; 5. Nut slot; 6. Groove; 7. Support frame; 8. Electric slide rail; 9. Bolting machine; 10. Mounting base; 11. First rotating shaft; 12. First limiting sleeve; 13. Inclined surface; 14. First clearance groove; 15. First clamping block; 16. First inclined surface; 17. First rectangular slide rod; 18. First spring; 19. Fixed sleeve; 20. Fixed rod; 21. Second limiting sleeve; 22. Second clearance groove; 23. Second clamping block; 24. Second inclined surface; 25. Second rectangular slide rod; 26. Sliding sleeve; 27. Second rotating shaft; 28. Second spring; 29. ​​Screwdriver bit; 30. Scooter base; 31. Inclined rod; 32. First mounting hole; 33. Handlebar bracket; 34. Second mounting hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1-11 The quick-assembly device shown is for the base and handlebar bracket of a hand-held scooter.

[0037] Example 1

[0038] The technical solution adopted in this invention is as follows: a quick assembly device for the base and handlebar bracket of a hand-held scooter, including a fixing seat 1, a screwdriver bit 29, and an installation unit.

[0039] The mounting base 1 has a placement portion for placing the scooter base 30 and the handlebar bracket 33. One end of the scooter base 30 has a diagonal bar 31 with multiple first mounting holes 32 aligned in a straight line. One side of the handlebar bracket 33 has a protrusion with multiple second mounting holes 34, corresponding one-to-one with the first mounting holes 32. The second mounting holes 34 are aligned with their corresponding first mounting holes 32, and then the handlebar bracket 33 and the scooter base 30 are securely connected together using bolts and nuts.

[0040] The placement section includes a first placement slot 2, a second placement slot 3, and a third placement slot 4. One end of the second placement slot 3 communicates with the first placement slot 2, and the other end of the second placement slot 3 communicates with the third placement slot 4. The first placement slot 2 is adapted to the scooter base 30 and is used to place the scooter base 30. The second placement slot 3 is adapted to the diagonal bar 31 and is used to place the diagonal bar 31. The third placement slot 4 is adapted to the handlebar bracket 33 and is used to place the handlebar bracket 33. Multiple nut slots 5 are formed on the bottom wall of the placement section, and the multiple nut slots 5 are aligned in a straight line. The multiple nut slots 5 correspond one-to-one with multiple first mounting holes 32. When the scooter base 30 and the handlebar bracket 33 are placed in the placement section, the nut slots 5 are aligned with the corresponding first mounting holes 32 and second mounting holes 34 in a vertical line. A groove 6 is formed at the bottom of each nut slot 5 to provide space for bolts to be drilled.

[0041] A support frame 7 is fixedly mounted on one end of the fixed base 1. A bolting machine 9 is horizontally slidably mounted on the support frame 7, and the moving path of the bolting machine 9 is aligned with the straight line containing the multiple nut grooves 5. The bolting machine 9 is vertically mounted. An electric slide rail 8 is fixedly mounted on the support frame 7, and an electric slider is fitted onto the electric slide rail 8. The electric slider is fixedly connected to the bolting machine 9.

[0042] The lower end of the bolting machine 9 has a mounting base 10. The bolting machine 9 can drive the mounting base 10 to rotate and simultaneously drive the bolting machine 9 to move up and down. The bolting machine 9 is existing technology and will not be described in detail here.

[0043] The mounting unit is installed at the lower end of the mounting base 10 and is used to mount the screwdriver bit 29. The bolting machine 9 drives the screwdriver bit 29 to rotate through the mounting base 10 and the mounting unit, and at the same time moves the screwdriver bit 29 downward, thereby completing the automatic bolt tightening action.

[0044] The mounting unit includes a guide and a limiting assembly. The guide is coaxially and fixedly connected to the mounting base 10. The horizontal cross-section of the guide is polygonal, and the guide is adapted to the screwdriver bit 29. The limiting assembly cooperates with the guide. When the screwdriver bit 29 passes through the guide and is installed on the mounting unit, the limiting assembly clamps and fixes the screwdriver bit 29. At the same time, the limiting assembly applies torque to the screwdriver bit 29 relative to the guide, causing the outer edge of the screwdriver bit 29 to exert a compressive force on the guide, thereby increasing the friction between the screwdriver bit 29 and the guide, further fixing the screwdriver bit 29.

[0045] The guide includes a fixing sleeve 19, which is fixedly installed below the mounting base 10 via a fixing rod 20. The fixing sleeve 19 is coaxially arranged with the mounting base 10.

[0046] The limiting assembly includes a first limiting sleeve 12 and a first clamping member. The first limiting sleeve 12 is coaxially rotatable below the mounting base 10 via a first rotating shaft 11. The first limiting sleeve 12 is located at the upper end of the fixed sleeve 19 and is adapted to the screwdriver bit 29. An inclined surface 13 is formed at the lower end of the first limiting sleeve 12, and the lower end of the inclined surface 13 is inclined outward. A first torsion spring is sleeved on the first rotating shaft 11 and is fixedly connected between the mounting base 10 and the first limiting sleeve 12. A first clearance groove 14 is formed on each side of the first limiting sleeve 12, and a first clamping member is slidably disposed in each first clearance groove 14.

[0047] The first clamping member includes a first clamping block 15, which is slidably disposed within a corresponding first clearance groove 14. A first inclined surface 16 is formed at the lower end of the first clamping block 15 facing the axis of the first limiting sleeve 12, with the lower end of the first inclined surface 16 tilting outwards. A first rectangular slide rod 17 is fixedly connected to the other side of the first clamping block 15. A sliding hole is formed on the first limiting sleeve 12 to slide with the first rectangular slide rod 17. One end of the first rectangular slide rod 17, away from the first clamping block 15, extends through the sliding hole to the outside of the first limiting sleeve 12. A first baffle is fixedly connected to the end of the first rectangular slide rod 17 extending outside the first limiting sleeve 12. A first spring 18 is fixedly connected between the first baffle and the first limiting sleeve 12, and the first spring 18 is sleeved on the first rectangular slide rod 17.

[0048] In this embodiment, the horizontal cross-section of the screwdriver bit 29 is a regular hexagon, and the horizontal cross-sections of the first limiting sleeve 12 and the fixing sleeve 19 are both regular hexagons adapted to the screwdriver bit 29. Initially, under the action of the first torsion spring, the first limiting sleeve 12 has a certain torsion angle relative to the fixing sleeve 19, that is, the six corners of the lower end of the first limiting sleeve 12 intersect with the six corners of the upper end of the fixing sleeve 19. The corners of the lower end of the first limiting sleeve 12 are above the upper edge of the fixing sleeve 19, but not opposite to the midpoint of the upper edge of the fixing sleeve 19. Thus, when the screwdriver bit 29 is inserted into the fixing sleeve 19, the angles between the sides of the corners of the screwdriver bit 29 and the corresponding inclined surfaces 13 are different in the horizontal projection. Thus, when the corners of the screwdriver bit 29 abut against the inclined surfaces 13, under the action of the inclined surfaces 13, the screwdriver bit 29 causes the first limiting sleeve 12 to rotate against the elastic force of the first torsion spring.

[0049] Working principle and process: In the initial state, under the action of the first torsion spring, the first limiting sleeve 12 has a certain torsion angle relative to the fixed sleeve 19, that is, the six corners of the first limiting sleeve 12 and the six corners of the fixed sleeve 19 are staggered. Under the action of the first spring 18, the inward end of the first clamping block 15 extends into the first limiting sleeve 12.

[0050] Place the nut into the nut groove 5. Align the second mounting hole 34 on the handlebar bracket 33 and the first mounting hole 32 on the scooter base 30. Then place the handlebar bracket 33 and scooter base 30 into the mounting section, so that the handlebar bracket 33 is in the third placement groove 4, the scooter base 30 is in the first placement groove 2, and the first mounting hole 32 is in the second placement groove 3. At this time, the axis of the nut groove 5 is on the same vertical line as the axes of the corresponding first mounting hole 32 and second mounting hole 34. Then insert multiple bolts into the first mounting hole 32 and second mounting hole 34. Then insert the screwdriver bit 29 into the mounting unit. Move the bolting machine 9 directly above the bolts via the electric slide rail 8, start the bolting machine 9, and the bolting machine 9 will cause the mounting base 10 to rotate and move downwards. The mounting base 10 will drive the screwdriver bit 29 to rotate and move downwards through the mounting unit, and the screwdriver bit 29 will drive the bolts to move synchronously. This will connect the bolts and the nut. After tightening one bolt, the mounting base 10 is moved upwards, and then the bolt tightening machine 9 slides along the electric slide rail 8 to move directly above the next bolt to be tightened. In this way, multiple bolts are tightened, thereby completing the fixed connection between the scooter base 30 and the handlebar bracket 33.

[0051] When installing the screwdriver bit 29 onto the mounting unit, the upper end of the screwdriver bit 29 is inserted into the retaining sleeve 19. When the upper end of the screwdriver bit 29 contacts the first limiting sleeve 12, the corner of the upper end of the screwdriver bit 29 contacts the inclined surface 13. Then, as the screwdriver bit 29 moves upward, under the guidance of the inclined surface 13, the first limiting sleeve 12 rotates around the first rotating shaft 11, and at the same time, the first torsion spring undergoes torsional deformation and acquires elastic potential energy. Until the side of the first limiting sleeve 12 is aligned with the side of the retaining sleeve 19, the screwdriver bit 29 moves upward along the inner wall of the first limiting sleeve 12. When the upper end of the screwdriver bit 29 contacts the first inclined surface 16, the screwdriver bit 29 presses the first clamping block 15 through the first inclined surface 16, causing the first clamping block 15 to move outward along the first relief groove 14, causing the first spring 18 to be stretched and acquire elastic potential energy. Under the action of the first spring 18, the first clamping block 15 exerts a compressive force on the screwdriver bit 29. The multiple first clamping blocks 15 clamp and fix the screwdriver bit 29, preventing it from sliding vertically. At the same time, under the action of the first torsion spring, the screwdriver bit 29 has a certain rotational tendency relative to the fixed sleeve 19, so that the edge of the screwdriver bit 29 exerts a compressive force on the side wall of the fixed sleeve 19, thereby increasing the friction between the screwdriver bit 29 and the fixed sleeve 19, further preventing the screwdriver bit 29 from sliding vertically relative to the fixed sleeve 19.

[0052] Example 2

[0053] like Figures 9-11 As shown, this embodiment is a modification based on the fixing base 1 of the embodiment. This embodiment only describes the parts that are different from those in the fixing base 1 of the embodiment, and the parts that are the same will not be described.

[0054] The guide includes a second limiting sleeve 21.

[0055] The second limiting sleeve 21 is coaxially and fixedly connected to the lower end of the mounting base 10. The horizontal cross-section of the second limiting sleeve 21 is a regular hexagon, and the second limiting sleeve 21 is adapted to the screwdriver bit 29. Each side of the second limiting sleeve 21 is provided with a second limiting component. When the screwdriver bit 29 is inserted into the second limiting sleeve 21, the multiple second limiting components clamp and fix the screwdriver bit 29, preventing the screwdriver bit 29 from sliding vertically relative to the second limiting sleeve 21.

[0056] like Figure 10 As shown, a second clearance groove 22 is provided on one side of each side of the second limiting sleeve 21. Multiple second clearance grooves 22 are at the same height, and all are offset counterclockwise towards their respective sides. The axes of the second clearance grooves 22 on opposite sides are not on the same straight line. A limiting component is provided within each second clearance groove 22.

[0057] The limiting assembly includes a second clamping block 23, a sliding sleeve 26, and a second rectangular sliding rod 25. The sliding sleeve 26 is vertically rotatable within the second clearance groove 22 via a second rotating shaft 27. A second torsion spring is fitted onto the second rotating shaft 27 and is fixedly connected between the sliding sleeve 26 and the second limiting sleeve 21. One end of the second rectangular sliding rod 25 facing the inside of the second limiting sleeve 21 is hinged to the second clamping block 23 via a first hinge axis, the axis of which is vertically oriented. A third torsion spring is fitted onto the first hinge axis and is fixedly connected between the second clamping block 23 and the second rectangular sliding rod 25. The other end of the second rectangular sliding rod 25 slides through the sliding sleeve 26 and extends outside the second limiting sleeve 21. A second baffle is fixedly mounted on the end of the second rectangular sliding rod 25 extending outside the second limiting sleeve 21. A second spring 28 is fitted onto the second rectangular sliding rod 25 and is fixedly connected between the second baffle and the sliding sleeve 26. The second clamping block 23 and the second relief groove 22 slide together. The lower end of the second clamping block 23 near the inner side of the second limiting sleeve 21 is provided with a second inclined surface 24, and the lower end of the second inclined surface 24 is inclined outward.

[0058] It should be noted that the width of the second clearance groove 22 is designed so that the second rectangular slide bar 25 and the slide sleeve 26 will not interfere with the movement of the second limiting sleeve 21.

[0059] In the initial state, under the action of the third torsion spring, the second rectangular slide bar 25 has a certain deflection relative to the second clamping block 23.

[0060] When the upper end of the screwdriver bit 29 is inserted into the second limiting sleeve 21, the screwdriver bit 29 presses against the second clamping block 23 via the second inclined surface 24, causing the second clamping block 23 to move outward along the second relief groove 22. The second clamping block 23 pushes the second rectangular slide rod 25, causing the second rectangular slide rod 25 to slide outward along the sliding sleeve 26. At the same time, the second clamping block 23 causes the second rectangular slide rod 25 to rotate around the first hinge axis, increasing the deflection angle of the second rectangular slide rod 25 relative to the second clamping block 23, causing the third torsion spring to deform to the torsional potential energy. The second rectangular slide rod 25 causes the sliding sleeve 26 to rotate around the second rotating shaft 27, causing the second torsion spring to torsion and acquire torsional potential energy. When the second rectangular slide rod 25 moves outward along the sliding sleeve 26, the second spring 28 extends and acquires elastic potential energy. Because the second rectangular slide bar 25 is inclined relative to the second clamping block 23, under the action of the second spring 28, the second clamping block 23 tilts and presses against the screwdriver bit 29. The pressing force of the second clamping block 23 on the screwdriver bit 29 can be decomposed into a vertical force perpendicular to the side of the screwdriver bit 29 and a parallel force parallel to the side of the screwdriver bit 29. The vertical force clamps and fixes the screwdriver bit 29. Figure 10As shown, because the second clearance groove 22 is close to one side, the axes of the second clearance grooves 22 on opposite sides are not on the same axis. Therefore, the vertical forces acting on the opposite sides of the screwdriver bit 29 are not on the same straight line, thus causing the screwdriver bit 29 to tend to rotate counterclockwise. This causes the outer edge of the screwdriver bit 29 to press against the inner wall of the second limiting sleeve 21, thereby increasing the friction between the screwdriver bit 29 and the second limiting sleeve 21, which further fixes the screwdriver bit 29. At the same time, the parallel force also causes the screwdriver bit 29 to tend to rotate counterclockwise, further increasing the fixing effect of the screwdriver bit 29.

[0061] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick assembly device for the base and handlebar bracket of a hand-held scooter, characterized in that, include: The mounting base (1), screwdriver bits (29), and mounting unit for mounting screwdriver bits (29) are provided. The mounting base (1) has a placement part for placing a scooter base (30) and a handlebar bracket (33). A bolting machine (9) is slidably arranged above the mounting base (1), and the mounting unit is installed at the lower end of the bolting machine (9). The mounting unit includes a guide and a limiting component. The guide is coaxially fixed to the bolting machine (9), and the guide is adapted to the screwdriver bits (29). The cross-section of the guide is polygonal. The limiting component cooperates with the guide. When the screwdriver bit (29) is installed onto the mounting unit through the guide, the limiting component clamps and fixes the screwdriver bit (29). At the same time, the limiting component makes the screwdriver bit (29) tend to rotate relative to the guide, so that the outer edge of the screwdriver bit (29) exerts a squeezing force on the guide, thereby increasing the friction between the screwdriver bit (29) and the guide, and further fixing the screwdriver bit (29). The lower end of the bolting machine (9) is rotatably equipped with a mounting base (10). The bolting machine (9) drives the mounting base (10) to rotate, and at the same time, the bolting machine (9) drives the mounting base (10) to move up and down. The guide includes a fixing sleeve (19), which is fixedly installed below the mounting base (10) by a fixing rod (20). The fixing sleeve (19) and the mounting base (10) are coaxially arranged. The limiting assembly includes a first limiting sleeve (12) and a first clamping member. The first limiting sleeve (12) is coaxially rotatable below the mounting base (10) via a first rotating shaft (11). The first limiting sleeve (12) is located at the upper end of the fixed sleeve (19). The first limiting sleeve (12) is adapted to the screwdriver bit (29). An inclined surface (13) is provided at the lower end of the inner side of the first limiting sleeve (12). The lower end of the inclined surface (13) is inclined outward. A first torsion spring is sleeved on the first rotating shaft (11). The first torsion spring is fixedly connected between the mounting base (10) and the first limiting sleeve (12). The first limiting sleeve (12) and the fixed sleeve (19) are interleaved. A first clearance groove (14) is provided on each side of the first limiting sleeve (12). A first clamping member is slidably arranged inside and outside each first clearance groove (14). The first clamping member includes a first clamping block (15), which is slidably disposed in a corresponding first clearance groove (14). The lower end of the first clamping block (15) facing the axis of the first limiting sleeve (12) is provided with a first inclined surface (16), and the lower end of the first inclined surface (16) is inclined outward. A first rectangular slide rod (17) is fixedly connected to the other side of the first clamping block (15). A sliding hole is provided on the first limiting sleeve (12) to slide with the first rectangular slide rod (17). The end of the first rectangular slide rod (17) away from the first clamping block (15) passes through the sliding hole and extends to the outside of the first limiting sleeve (12). A first baffle is fixedly connected to one end of the first rectangular slide bar (17) that extends outside the first limiting sleeve (12). A first spring (18) is fixedly connected between the first baffle and the first limiting sleeve (12). The first spring (18) is sleeved on the first rectangular slide bar (17).

2. A quick assembly device for the base and handlebar bracket of a hand-held scooter, characterized in that, include: The mounting base (1), screwdriver bits (29), and mounting unit for mounting screwdriver bits (29) are provided. The mounting base (1) has a placement part for placing a scooter base (30) and a handlebar bracket (33). A bolting machine (9) is slidably arranged above the mounting base (1), and the mounting unit is installed at the lower end of the bolting machine (9). The mounting unit includes a guide and a limiting component. The guide is coaxially fixed to the bolting machine (9), and the guide is adapted to the screwdriver bits (29). The cross-section of the guide is polygonal. The limiting component cooperates with the guide. When the screwdriver bit (29) is installed onto the mounting unit through the guide, the limiting component clamps and fixes the screwdriver bit (29). At the same time, the limiting component makes the screwdriver bit (29) tend to rotate relative to the guide, so that the outer edge of the screwdriver bit (29) exerts a squeezing force on the guide, thereby increasing the friction between the screwdriver bit (29) and the guide, and further fixing the screwdriver bit (29). The lower end of the bolting machine (9) is rotatably equipped with a mounting base (10). The bolting machine (9) drives the mounting base (10) to rotate, and at the same time, the bolting machine (9) drives the mounting base (10) to move up and down. The guide is a second limiting sleeve (21), which is fixed coaxially to the lower end of the mounting base (10); the second limiting sleeve (21) is adapted to the screwdriver bit (29), and the horizontal cross-section of the second limiting sleeve (21) is polygonal; Each side of the second limiting sleeve (21) is provided with a second clearance groove (22), and multiple second clearance grooves (22) are at the same height and are offset counterclockwise to the side on which they are located; each second clearance groove (22) is provided with a limiting component; the limiting component includes a second clamping block (23), a sliding sleeve (26), and a second rectangular sliding rod (25); The second clamping block (23) is slidably disposed in the second relief groove (22). The lower end of the second relief groove (22) facing inward is provided with a second inclined surface (24), and the lower end of the second inclined surface (24) is inclined outward. The sliding sleeve (26) is rotatably disposed in the second relief groove (22) through the second rotating shaft (27), and the second rotating shaft (27) is vertically disposed. A second torsion spring is sleeved on the second rotating shaft (27), and a first torsion spring is fixedly connected between the second limiting sleeve (21) and the sliding sleeve (26). One end of the second rectangular sliding rod (25) is hinged to the second clamping block (23) through the first hinge shaft, the first hinge shaft is vertically disposed, and a third torsion spring is sleeved on the first hinge shaft. One end of the third torsion spring is fixedly connected to the second clamping block (23), and the other end of the third torsion spring is fixedly connected to the second rectangular sliding rod (25). The other end of the second rectangular slide rod (25) slides through the sliding sleeve (26) and extends outside the second limiting sleeve (21); a second baffle is fixedly connected to one end of the second rectangular slide rod (25) outside the second limiting sleeve (21), and a second spring (28) is fixedly connected between the second baffle and the sliding sleeve (26), and the second spring (28) is sleeved on the second rectangular slide rod (25).

3. The quick assembly device for the base and handlebar bracket of a hand-held scooter according to claim 1 or 2, characterized in that: The scooter base (30) has a slant bar (31) at one end, and multiple first mounting holes (32) are provided on the slant bar (31), and the multiple first mounting holes (32) are on the same straight line; the handlebar bracket (33) has a protrusion on one side, and multiple second mounting holes (34) are provided on the protrusion, and the first mounting holes (32) and the second mounting holes (34) correspond one to one; The placement section includes a first placement slot (2) for placing the scooter base (30), a second placement slot (3) for placing the diagonal bar (31), and a third placement slot (4) for placing the handlebar bracket (33); one end of the second placement slot (3) is connected to the first placement slot (2), and the other end of the second placement slot (3) is connected to the third placement slot (4); Multiple nut grooves (5) are provided on the bottom wall of the placement part, and the multiple nut grooves (5) are on the same straight line; the multiple nut grooves (5) correspond one-to-one with multiple first mounting holes (32). When the scooter base (30) and handlebar bracket (33) are placed in the placement part, the nut grooves (5) are on the same vertical line as the corresponding first mounting holes (32) and second mounting holes (34); each nut groove (5) has a groove (6) at the bottom.

4. The quick assembly device for the base and handlebar bracket of a hand-held scooter according to claim 1 or 2, characterized in that: One end of the fixed base (1) is fixedly connected to the support frame (7), and the support frame (7) is equipped with an electric slide rail (8). The electric slide rail (8) is equipped with an electric slider, and the bolt machine (9) is fixedly installed on the electric slider. The sliding direction of the bolt machine (9) is directly above the line where the multiple nut grooves (5) are located.

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