Internal tensioning type switching unit for whole bicycle assembly and whole bicycle assembly single-line equipment

Abstract

The utility model relates to an internal tensioning type switching unit for whole bicycle assembly and whole bicycle assembly single-line equipment. Comprising a tensioning main body, a tensioning trigger mechanism, a mounting seat and a connecting side arm, wherein the tensioning main body is inserted into a middle tube of a bicycle frame and is tensioned and fixed with the middle tube; the tensioning trigger mechanism is used for driving the tensioning main body to be switched between a tensioning state and a loosening state; the mounting seat is used for mounting the tensioning main body and the tensioning trigger mechanism; and the other end of the connecting side arm is provided with a connecting hole which is used for realizing the detachable installation of the internal tensioning type switching unit for assembling the whole bicycle. According to the internal tensioning type switching unit for assembling the whole bicycle, detachable mounting and fixing can be achieved, different clamping units can be conveniently switched according to different bicycle types, and practicability is high; according to the whole vehicle assembly single-line equipment, the clamping units are detachable, the inner tensioning type clamping units or the outer clamping type clamping units can be switched according to vehicle types, and the whole vehicle assembly single-line equipment can be suitable for assembly of different vehicle types and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to an internal tensioning switching unit for assembling a complete bicycle and a complete bicycle assembly single-line device. Background Art

[0002] A bicycle is composed of multiple parts, making assembly a relatively complex process. The frame, as the backbone of the entire bicycle, greatly determines and influences the correctness and comfort of riding posture. The frame is the basic structural element of the bicycle, serving as its backbone and main body. All other components are directly or indirectly mounted to the frame.

[0003] To facilitate bicycle assembly, a clamp is typically used to secure the bicycle frame, allowing for the installation of other components. Existing clamps typically come in two types: external clamps and internal tensioners. External clamps clamp directly onto the outer wall of the frame's center tube, while internal tensioners use a tensioner that expands and contacts the inner wall of the center tube to secure the tube. However, existing clamps are non-interchangeable, making them difficult to adapt to a wide range of vehicle models. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an internal tensioning switching unit for assembling a complete bicycle and a complete bicycle assembly single-line device.

[0005] The utility model is achieved through the following technical solutions:

[0006] The internal tensioning switching unit for assembling a complete bicycle provided in the present application comprises a tensioning body for being inserted into and tensionedly fixed to a center tube of a bicycle frame, a tensioning trigger mechanism for driving the tensioning body to switch between a tensioned state and a release state, a mounting seat for mounting the tensioning body and the tensioning trigger mechanism, and a connecting side arm connected to the mounting seat, wherein the other end of the connecting side arm is provided with a connecting hole for realizing detachable installation of the internal tensioning switching unit for assembling a complete bicycle.

[0007] Optionally, the connection hole is a bolt hole.

[0008] Optionally, the mounting seat includes an integrally manufactured flange and shaft neck, the upper end of the shaft neck is connected to the flange, and the lower end of the shaft neck is connected to the upper end of the tapered sleeve; one end of the connecting side arm has a mounting hole adapted to the shaft neck and a flange hole arranged around the mounting hole, the shaft neck of the mounting seat is installed in the mounting hole of the connecting side arm, and the flange of the mounting seat is fixedly connected to the flange of the connecting side arm.

[0009] Optionally, the tensioning body includes a cone sleeve and at least two tensioning blocks, the upper end of the cone sleeve is fixedly connected to the mounting seat, the lower end of the cone sleeve has an outer cone surface, and the inner surface of the tensioning block is an inner cone surface adapted to the outer cone surface of the cone sleeve; the tensioning block is arranged on the outside of the cone sleeve along the circumferential direction and fits the outer cone surface of the cone sleeve; the tensioning trigger mechanism includes a screw, an adjusting nut and an operating mechanism, the adjusting nut is built into the cone sleeve and is coaxial with the cone sleeve, the lower end of the screw extends into the cone sleeve and cooperates with the adjusting nut thread; each tensioning block is movably connected to the adjusting nut through a clamping block, and the cone sleeve has an avoidance opening for the clamping block to pass through; by rotating the screw, the adjusting nut can be driven to move axially in the cone sleeve, driving each tensioning block to switch between positions close to and away from each other; the screw passes through the inner hole of the mounting seat and is rotatably connected to the mounting seat; the upper end of the screw is connected to the operating mechanism.

[0010] Among them, one of the adjusting nut and the tightening block is provided with a radial clamping block, and the other is provided with a clamping groove adapted to the clamping block, and one end of the clamping block passes through the avoidance opening of the cone sleeve and is installed in the clamping groove.

[0011] Optionally, the operating mechanism includes a transmission wheel and a handle, the handle is connected to the transmission wheel, and the transmission wheel is connected to the screw.

[0012] The single-line equipment for whole-vehicle assembly provided in the present application includes a support frame, a base, and the internal tension switching unit for whole-vehicle bicycle assembly. The bottom of the support frame is connected to the base, and the other end of the connecting side arm is detachably fixedly connected to the support frame through a connecting hole.

[0013] Optionally, the base comprises a circular or non-circular bottom plate having a flat bottom surface.

[0014] Furthermore, the base also includes a universal moving mechanism and a lifting adjustment mechanism. The universal moving mechanism includes a pressure plate and a plurality of universal wheels. The universal wheels are mounted on the pressure plate. A through hole for the universal wheel to pass through is provided on the chassis at a position corresponding to each universal wheel.

[0015] The lifting and lowering adjustment mechanism is used to adjust the height of the universal movable mechanism, and can drive the universal movable mechanism to switch between a first position and a second position. When the universal movable mechanism is in the first position, the bottom of the universal wheel is higher than the bottom surface of the chassis. When the universal movable mechanism is in the second position, the bottom of the universal wheel is lower than the bottom surface of the chassis.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] 1. The internal tensioning switching unit for assembling a complete bicycle of the present application can be detachably installed and fixed, making it easy to switch between different clamping units according to different vehicle models, and having strong practicality;

[0018] 2. The single-line vehicle assembly equipment of the present application has a detachable clamping unit, which can be switched between an internal tensioning clamping unit and an external clamping clamping unit according to the vehicle model, and is suitable for the assembly of different vehicle models and has a wide range of applications;

[0019] 3. Each tensioning block of the present application moves radially due to the action of the outer conical surface of the cone sleeve. The outer cylindrical surface of the tensioning block can contact the inner hole wall of the clamped part, making the clamping more stable.

[0020] 4. The single-line equipment for whole vehicle assembly of the present application can be fixed on the ground by relying on its own weight, which can save the ground fixing parts; in addition, the single-line equipment for whole vehicle assembly of the present application can be switched to a movable mode, which is convenient for changing the fixed position of the equipment and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A perspective view of an internal tensioning switching unit for assembling a complete bicycle in an embodiment;

[0023] Figure 2 A cross-sectional view of an internal tensioning switching unit for assembling a complete bicycle in an embodiment;

[0024] Figure 3 An exploded view of an internal tensioning switching unit for assembling a complete bicycle in an embodiment;

[0025] Figure 4 for Figure 2 A partial enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic structural diagram of the adjusting nut in the embodiment;

[0027] Figure 6 Schematic diagram of three tensioning blocks in the initial state in the embodiment;

[0028] Figure 7 A three-dimensional diagram of the connecting side arm in the embodiment;

[0029] Figure 8 This is a schematic structural diagram of a single-line vehicle assembly equipment in an embodiment;

[0030] Figure 9 It is a structural schematic diagram of the base of the vehicle assembly single-line equipment in the embodiment. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] It should be noted that, in the absence of any conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to in conjunction with each other.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0034] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1 、 Figure 2 、 Figure 3 As shown, the internal tensioning switching unit for assembling a complete bicycle disclosed in this embodiment includes a tensioning body 100, a tensioning trigger mechanism, a mounting seat 6 and a connecting side arm 10. The tensioning trigger mechanism is used to drive the tensioning body 100 to switch between tensioned and released states.

[0036] The tensioning body 100 comprises a tensioning block 1 and a tapered sleeve 2. The tensioning blocks 1 have at least two members, and the sleeve 2 has an outer tapered surface. The inner surface of the tensioning block 1 is an inner tapered surface that matches the outer tapered surface of the sleeve 2, and the two have the same taper. The tensioning block 1 is arranged circumferentially outside the sleeve 2 and fits closely to the outer tapered surface of the sleeve 2.

[0037] The tension trigger mechanism is used to switch the tension blocks 1 between positions of moving closer together and farther apart. The trigger mechanism includes a screw 3, an adjusting nut 4, and an operating mechanism 5. The adjusting nut 4 is coaxially located within the tapered sleeve 2. The lower end of the screw 3 extends into the sleeve 2 and engages with the adjusting nut 4. The tension block 1 engages with the adjusting nut 4 via a clamping block 41. The sleeve 2 has a clearance 23 for the clamping block 41. Rotating the screw 3 drives the adjusting nut 4 axially within the sleeve 2, and the tension block 1 moves with the adjusting nut 4. Due to the sliding fit between the conical surfaces of the sleeve 2 and the tension block 1, the axial force of the tension block 1 is converted into force that drives the tension blocks 1 to expand radially outward and retract radially inward. Specifically, when the tension block 1 moves in the direction of increasing the outer diameter of the sleeve 2, it moves outward, achieving tension; when the tension block 1 moves in the direction of decreasing the outer diameter of the sleeve 2, it moves inward, achieving contraction.

[0038] It should be understood that the avoidance opening 23 not only allows the clamping block 41 to connect with the tensioning block 1 and the adjusting nut 4 , but also reserves a suitable space for the axial movement of the clamping block 41 .

[0039] In some embodiments, as Figure 2 、 Figure 5 、 Figure 6 As shown, radial retaining blocks 41 are formed on the outer surface of the adjusting nut 4, corresponding to the positions of each tensioning block 1. The tensioning block 1 has a retaining groove 11 that mates with the retaining blocks 41. The retaining blocks 41 on the adjusting nut 4 extend from the relief opening 23 to the exterior of the taper sleeve 2 and engage in the retaining groove 11 of the corresponding tensioning block 1. Conversely, in other embodiments, retaining grooves 11 are formed on the outer surface of the adjusting nut 4, corresponding to the positions of each tensioning block 1. The retaining blocks 41 on the tensioning block 1 extend from the relief opening 23 to the interior of the taper sleeve 2 and engage in the retaining grooves 11 at the corresponding positions of the adjusting nut 4. The cooperation between the retaining blocks 41 and the retaining grooves 11 not only prevents the adjusting nut 4 from rotating with the screw 3 but also enables synchronous axial movement of the tensioning block 1 driven by the adjusting nut 4, while simultaneously allowing radial movement of the tensioning block 1 relative to the adjusting nut 4.

[0040] It is worth noting that the number of the clamping blocks 41 corresponding to each tensioning block 1 can be reasonably set according to needs. To enhance stability, each tensioning block 1 is clamped with the adjusting nut 4 through two clamping blocks 41.

[0041] It is worth mentioning that the number of the tightening blocks 1 can also be reasonably set according to the needs; as preferred, the tightening blocks 1 are three. Optionally, the cross section of the tightening blocks 1 is arc-shaped, and the outer surface of each tightening block 1 is a cylindrical surface coinciding with the axis of the taper sleeve 2. Specifically, the cylindrical sleeve with the inner wall being a tapered surface and the outer wall being a cylindrical surface can be evenly divided into at least two equal parts in the circumferential direction and then each tightening block 1 is formed.

[0042] The upper part of the screw rod 3 is installed in the inner hole of the mounting seat 6 and is rotationally connected with the mounting seat 6 through the bearing 7. The mounting seat 6 is fixedly connected with the connecting side arm 10. Optionally, the mounting seat 6 includes a flange plate and a shaft neck integrally manufactured, the upper end of the shaft neck is connected with the flange plate, and the lower end of the shaft neck is connected with the upper end of the taper sleeve 2.

[0043] As shown in Figure 7 , one end of the connecting side arm 10 has a mounting hole 102 matched with the shaft neck and a flange hole 103 arranged around the mounting hole 102, and the other end of the connecting side arm 10 has a plurality of connecting holes 101, the shaft neck of the mounting seat 6 is installed in the mounting hole 102 of the connecting side arm 10, the flange plate of the mounting seat 6 is fixed with the connecting side arm 10, and the upper end of the taper sleeve 2 is fixedly connected with the mounting seat 6.

[0044] Optionally, the connecting hole 101 is a bolt hole, and the axis of the connecting hole 101 is parallel to the axis of the mounting hole 102 and the screw rod 3; as preferred, the connecting hole 101 is a countersunk bolt hole, which can be detachably fixed with the rotating arm of the equipment through a bolt, facilitating the switching of different clamping units.

[0045] In order to facilitate the operation of the screw rod 3, an operating mechanism 5 is connected to the upper end of the screw rod 3. Specifically, the operating mechanism 5 includes a transmission wheel 51 and a handle 52, the transmission wheel 51 is connected with the screw rod 3, and the handle 52 is connected with the transmission wheel 51. Through the handle 52, force can be more easily applied to the transmission wheel 51, and then the transmission wheel 51 can be easily rotated, driving the screw rod 3 to rotate, achieving the purpose of tightening or loosening the clamping of the cylindrical parts. Optionally, a key groove 31 is formed in the upper end of the screw rod 3, and the screw rod 3 is keyed connected with the transmission wheel 51.

[0046] The taper sleeve 2 includes a cylindrical segment 23 and a tapered segment 21 integrally manufactured, the lower end of the cylindrical segment 23 is connected with the upper end of the tapered segment 21, the upper end of the cylindrical segment 23 is connected with the lower end of the mounting seat 6 through a screw, the outer tapered surface and the avoiding opening 23 are both arranged on the tapered segment 21, a plurality of strip-shaped avoiding openings 23 are evenly arranged on the tapered segment 21 in the circumferential direction, and the lower end of the avoiding opening 23 penetrates through the lower end of the tapered segment 21, facilitating the clamping block 41 to be installed into the avoiding opening 23 from the end of the tapered segment 21.

[0047] To further enhance reliability and ease of operation, a first limiting device 91 and a second limiting device 92 are installed on the screw rod 3. The adjusting nut 4 is located between the first limiting device 91 and the second limiting device 92. The first limiting device 91 and the second limiting device 92 jointly limit the travel of the adjusting nut 4. Optionally, the first limiting device 91 is a retaining ring sleeved on the screw rod 3 and located within the tapered sleeve 2; the second limiting device 91 is a pin radially inserted into the screw rod 3 and located outside the tapered sleeve 2. The lower end of the screw rod 3 has a radial socket adapted for the pin.

[0048] In some embodiments, as Figure 4 As shown, there are two bearings 7 in the mounting seat 6, and the two bearings 7 are respectively installed in the mounting cavities at the upper and lower ends of the mounting seat 6. The outer ends of the bearings 7 are limited by retaining springs 71, and the inner wall of the mounting cavity of the mounting seat 6 has a groove adapted to the retaining spring 71.

[0049] The screw rod 3 is provided with a limit flange 32, which is located above the tapered sleeve 2 and below the lower bearing 7. The flange 32 can support the bearing 7. Optionally, a spring 8 is provided between the transmission wheel 51 and the mounting seat 6. The upper end of the mounting seat 6 and the lower end of the transmission wheel 51 both have spring cavities adapted for the spring 8. One end of the spring 8 is installed in the spring cavity of the mounting seat 6, and the other end is installed in the spring cavity of the transmission wheel 51. The spring 8 is sleeved outside the screw rod 3 and compressed between the transmission wheel 51 and the mounting seat 6.

[0050] In the initial state, as shown in Figure 6, the tensioning blocks 1 are close to each other, and the tensioning blocks 1 form an inner hole in the form of a tapered hole as a whole. The diameter of the circumferential surface of the outer surface of each tensioning block 1 is smaller than the inner diameter of the clamped part. At this time, the tensioning body 100 is inserted into the inner hole of the clamped part; then, the transmission wheel 51 is rotated, and the transmission wheel 51 drives the screw 3 to rotate, and then drives the adjusting nut 4 and the tensioning block 1 to move upward. At the same time, the tensioning blocks 1 move radially due to the action of the outer conical surface of the tapered sleeve 2 and then separate. In this way, the tensioning block 1 can be pressed against the inner hole wall of the clamped part to achieve tension and fixation of the clamped part.

[0051] Since the inner hole formed integrally by each tensioning block 1 is a tapered hole and the tapered section 21 is tapered correspondingly, the tensioning block 1 can be pushed radially outward when moved by the tensioning trigger mechanism, thereby radially tightening the parts sleeved on the tensioning block 1. In addition, the radial force exerted by each tensioning block 1 on the clamped part is uniform in magnitude, thereby providing good clamping stability.

[0052] like Figure 8As shown, the single-line equipment for complete bicycle assembly disclosed in a preferred embodiment of the present application includes a support frame 200 and a base 300. The internal tension-type switching unit for complete bicycle assembly is detachably fixedly connected to the support frame 200 via a connecting side arm 10, and the bottom of the support frame 200 is connected to the base 300. The base 300 includes a chassis 301 with a flat bottom surface. The large contact area between the chassis 301 and the ground increases the friction between them, and the position is fixed by the weight of the equipment.

[0053] Optionally, the base 300 can switch between a mobile state and a non-mobile state. Specifically, the base 300 further includes a universal movable mechanism and a lifting and lowering mechanism. The lifting and lowering mechanism is used to adjust the height of the universal movable mechanism and can drive the universal movable mechanism to switch between a first position and a second position. When the universal movable mechanism is in the first position, the base 300 is immobile; when the universal movable mechanism is in the second position, the base 300 is movable.

[0054] The universal moving mechanism includes a pressure plate 302 and a plurality of universal wheels 303 . The universal wheels 303 are mounted on the pressure plate 302 . A through hole 309 for the universal wheel 303 to pass through is provided on the chassis 301 at a position corresponding to each universal wheel 303 .

[0055] The lifting and lowering adjustment mechanism is used to adjust the height of the universal movable mechanism, and can drive the universal movable mechanism to switch between the first position and the second position. When the universal movable mechanism is in the first position, the bottom of the universal wheel 303 is higher than the bottom surface of the chassis 301. When the universal movable mechanism is in the second position, the bottom of the universal wheel 303 is lower than the bottom surface of the chassis 301.

[0056] In the initial state, the universal moving mechanism is in the first position, at which time the bottom of the universal wheel 303 is higher than the bottom surface of the chassis 301, and the bottom surface of the chassis 301 is in contact with the ground; then the universal moving mechanism can be driven downward by the lifting and adjusting mechanism, and the universal wheel 303 moves downward from the corresponding through hole 309 on the chassis 301, so that the bottom of each universal wheel 303 is lower than the bottom surface of the chassis 301. At this time, the universal wheel 303 replaces the chassis 301 in contact with the ground, and the chassis 301 is lifted off the ground under the drive of the reaction force, and the base 300 can move.

[0057] It is worth noting that the lifting and adjusting mechanism can be a manual lifting and adjusting mechanism or an automatic lifting and adjusting mechanism. In an exemplary embodiment, the lifting and adjusting mechanism is a manual adjustment structure. Specifically, Figure 9 As shown, the lifting adjustment mechanism includes an adjusting sleeve 304, a lifting adjustment nut 305 and a first spring 306. The bottom end of the adjusting sleeve 304 is connected to the chassis 301. The outer surface of the adjusting sleeve 304 has an external thread matching the lifting adjustment nut 305. The lifting adjustment nut 305 is threadedly connected to the adjusting sleeve 304.

[0058] The pressure plate 302 is mounted on the adjustment sleeve 304 and can move up and down along the adjustment sleeve 304. The first spring 306 is mounted on the adjustment sleeve 304 and positioned between the pressure plate 302 and the chassis 301. A lift adjustment nut 305 is located above the pressure plate 302. Turning the lift adjustment nut 305 downward causes the pressure plate 302 to move downward, overcoming the elastic force of the first spring 306. This in turn drives the universal wheel 303 downward from the corresponding through-hole 309 in the chassis 301 until the wheel bottom is below the bottom surface of the chassis 301. At this point, the universal wheel 303 replaces the chassis 301 in contact with the ground. Similarly, turning the lift adjustment nut 305 upward causes it to move upward, lifting the pressure plate 302 upward under the action of the first spring 306 until it is off the ground. The chassis 301 is also driven back into contact with the ground by the reaction force. To facilitate turning the lift adjustment nut 305, a lever hole is provided on the lift adjustment nut 305.

[0059] The lifting and adjusting mechanism described above is a manual adjustment mechanism. However, the present invention is not limited thereto. Specifically, in other embodiments, the lifting and adjusting mechanism is an automatic lifting and adjusting mechanism mounted on the adjustment sleeve 304. The automatic lifting and adjusting mechanism can drive the pressure plate 302 to move up and down. The automatic lifting and adjusting mechanism can be an electric lifting and adjusting mechanism, a hydraulic lifting and adjusting mechanism, or a pneumatic lifting and adjusting mechanism.

[0060] It is worth noting that the shapes of the chassis 301 and the through hole 309 are reasonably set according to needs; preferably, the chassis 301 is a circular disk and the through hole 309 is a circular hole.

[0061] To make the base 300 more stable, an adjustment sleeve 304 is connected to the center of the chassis 301. The adjustment sleeve 304 passes through the center hole of the pressure plate 302 and has a clearance fit therewith. The universal wheels 303 are evenly arranged on the same circumference around the center hole of the pressure plate 302. The lower end of the support frame 200 is mounted within the adjustment sleeve 304.

[0062] To further enhance the stability of the pressure plate 302 during its vertical movement, a plurality of support rods 307 are mounted on the chassis 301. The pressure plate 302 has support rod holes corresponding to the support rods 307. The lower ends of the support rods 307 are connected to the chassis 301, while the upper ends of the support rods 307 are mounted in corresponding support rod holes in the pressure plate 302, with a clearance fit therebetween. The plurality of support rods 307 provide a certain degree of guidance for the pressure plate 302 and prevent the pressure plate 302 from rotating relative to the adjustment sleeve 304, ensuring that the universal wheel 303 is always positioned directly above the corresponding hole 309 in the chassis 301.

[0063] In some embodiments, several auxiliary springs 308 are disposed between the pressure plate 302 and the chassis 301. These auxiliary springs 308 are evenly arranged on the same circumference around the first spring 306. Preferably, the number of auxiliary springs 308 matches the number of support rods 307. Each auxiliary spring 308 is sleeved onto the outside of the support rods 307. The upper ends of the auxiliary springs 308 are connected to the pressure plate 302, while the lower ends are free or connected to the chassis 301. When the pressure plate 302 moves downward and approaches the chassis 301, the auxiliary springs 308 provide a certain degree of cushioning and vibration reduction.

[0064] It is worth noting that the number of universal wheels 303 can be reasonably set according to needs, and setting three can basically meet the needs of smooth movement. In an exemplary embodiment, there are four universal wheels 303 and four support rods 307, and correspondingly, there are four through holes 309 on the chassis 301.

[0065] like Figure 8 As shown, in an exemplary embodiment, the tensioning body 100 is inserted into the middle tube of the bicycle frame 400 and tightened therewith, so that the bicycle frame 400 is fixed on the support frame 200. The operator can assemble parts onto the bicycle frame to complete the assembly of the bicycle.

[0066] The vehicle assembly single-line equipment of this embodiment can fix the position by the weight of the equipment by switching the base 300 to a non-movable state; and when the base 300 is switched to a movable state, it is easy to move the entire equipment, which is very convenient to use.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An internal tensioning switching unit for assembling a complete bicycle, characterized in that: include: A tensioning body (100) for being inserted into a middle tube of a bicycle frame and tensioned and fixed thereto; A tension trigger mechanism for driving the tensioning body (100) to switch between a tensioned state and a loosened state; A mounting seat (6) for mounting the tensioning body (100) and the tensioning trigger mechanism, and A connecting side arm (10) connected to the mounting seat (6) has a connecting hole (101) on the other end thereof for realizing detachable installation of the internal tensioning switching unit for assembling the entire bicycle.

2. The internal tension switching unit for assembling a complete bicycle according to claim 1, characterized in that: The connecting hole (101) is a bolt hole.

3. The internal tension switching unit for assembling a complete bicycle according to claim 1, characterized in that: The mounting seat (6) includes a flange and a shaft neck manufactured in one piece, the upper end of the shaft neck is connected to the flange, and the lower end of the shaft neck is connected to the upper end of the tapered sleeve (2); One end of the connecting side arm (10) has a mounting hole (102) adapted to the shaft neck and a flange hole (103) arranged around the mounting hole (102); the shaft neck of the mounting seat (6) is mounted in the mounting hole (102) of the connecting side arm (10); and the flange of the mounting seat (6) is fixedly connected to the flange of the connecting side arm (10).

4. The internal tension switching unit for assembling a complete bicycle according to any one of claims 1 to 3, characterized in that: The tightening body (100) comprises a cone sleeve (2) and at least two tightening blocks (1), the upper end of the cone sleeve (2) is fixedly connected to the mounting seat (6), the lower end of the cone sleeve (2) has an outer cone surface, and the inner surface of the tightening block (1) is an inner cone surface adapted to the outer cone surface of the cone sleeve (2); the tightening block (1) is arranged on the outer side of the cone sleeve (2) along the circumferential direction and fits with the outer cone surface of the cone sleeve (2); The tension trigger mechanism comprises a screw (3), an adjusting nut (4) and an operating mechanism (5); the adjusting nut (4) is built into the cone sleeve (2) and is coaxial with the cone sleeve (2); the lower end of the screw (3) extends into the cone sleeve (2) and is threadedly engaged with the adjusting nut (4); each tension block (1) is movably connected to the adjusting nut (4) via a clamping block (41); the cone sleeve (2) is provided with an escape opening (23) for the clamping block (41) to pass through; by rotating the screw (3), the adjusting nut (4) can be driven to move axially in the cone sleeve (2), driving each tension block (1) to switch between positions close to each other and positions away from each other; The screw rod (3) passes through the inner hole of the mounting seat (6) and is rotatably connected to the mounting seat (6); the upper end of the screw rod (3) is connected to the operating mechanism (5).

5. The internal tension switching unit for assembling a complete bicycle according to claim 4, characterized in that: One of the adjusting nut (4) and the tensioning block (1) has a radial clamping block (41), and the other has a clamping groove (11) adapted to the clamping block (41). One end of the clamping block (41) passes through the avoidance opening (23) of the cone sleeve (2) and is installed in the clamping groove (11).

6. The internal tension switching unit for assembling a complete bicycle according to claim 4, characterized in that: The operating mechanism (5) comprises a transmission wheel (51) and a handle (52), the handle (52) is connected to the transmission wheel (51), and the transmission wheel (51) is connected to the screw (3).

7. The internal tension switching unit for assembling a complete bicycle according to claim 4, characterized in that: A bearing (7) is provided between the screw (3) and the mounting seat (6).

8. Single-line equipment for complete vehicle assembly, characterized in that: The invention comprises a support frame (200), a base (300) and an internal tensioning switching unit for assembling a complete bicycle according to any one of claims 1 to 7, wherein the bottom of the support frame (200) is connected to the base (300), and the other end of the connecting side arm (10) is detachably fixedly connected to the support frame (200) through a connecting hole (101).

9. The vehicle assembly single-line equipment according to claim 8, characterized in that: The base (300) comprises a circular or non-circular bottom plate (301), and the bottom plate (301) has a flat bottom surface.

10. The vehicle assembly single-line equipment according to claim 9, characterized in that: The base (300) further includes a universal moving mechanism and a lifting and adjusting mechanism. The universal moving mechanism includes a pressing plate (302) and a plurality of universal wheels (303). The universal wheels (303) are mounted on the pressing plate (302). A through hole (309) for the universal wheel (303) to pass through is provided at a position corresponding to each universal wheel (303) on the chassis (301). The lifting and lowering adjustment mechanism is used to adjust the height of the universal movable mechanism and can drive the universal movable mechanism to switch between a first position and a second position. When the universal movable mechanism is in the first position, the wheel bottom of the universal wheel (303) is higher than the bottom surface of the chassis (301); when the universal movable mechanism is in the second position, the wheel bottom of the universal wheel (303) is lower than the bottom surface of the chassis (301).

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