Miniature tire changer and using method thereof

Abstract

The invention relates to the technical field of tire changer and discloses a miniature tire changer and a using method thereof.The miniature tire changer comprises a frame, a plurality of universal wheels are installed at the bottom of the frame, a controller is arranged on one side of the frame, a driving assembly is arranged at the output end of the controller, and a transmission assembly is arranged at the top end of the driving assembly; a fixing assembly is arranged on the outer wall of the transmission assembly, a separating assembly is arranged at the top end of the transmission assembly, the motor is fixedly connected to the output end of the controller, the output end of the motor is fixedly connected with a chain wheel chain, and a differential mechanism is arranged at the bottom of the other end of the chain wheel chain. The tire bead and the hub can be separated in advance through the tire pressing assembly, and the subsequent tire removing resistance is reduced; the driving assembly provides stable rotating power, the transmission assembly is matched with a threaded buckle through a threaded clamping sleeve, and the separation assembly achieves telescopic and steering adjustment through a T-shaped sleeve, so that the working efficiency is greatly improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] This invention relates to the field of tire changing machine technology, specifically a miniature tire changing machine and its usage method. Background Technology

[0002] During daily driving, vehicle tires are prone to various malfunctions due to road conditions or wear and tear. For example, they may be punctured by sharp objects, bulge due to internal structural damage caused by impact, or suffer excessive tread wear due to long-term friction. This can not only affect the vehicle's handling stability and driving safety, but may also increase fuel consumption. Therefore, car owners should regularly check the condition of their tires and replace or professionally repair them in a timely manner based on the inspection results.

[0003] A traditional tire changer is a mechanical device specifically designed for removing and installing car tires. It typically consists of core components such as a frame, chuck, tire pressing arm, and worktable. During operation, it relies on mechanical or hydraulic power to safely separate the tire from the rim. It is widely used in auto repair shops, tire specialty stores, and vehicle maintenance workshops, and is an indispensable basic tool for tire replacement, repair, or rim cleaning.

[0004] However, traditional large tire changers have a bulky overall structure and a long operating stroke. Key actions are mostly performed manually, resulting in a low degree of automation. When adapting to different tire specifications, repeated adjustments are required, which is cumbersome and time-consuming. At the same time, the equipment lacks a labor-saving transmission and assist structure, resulting in poor human-machine operation and low overall work efficiency, as well as high labor intensity for operators. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a miniature tire changer and its usage method, solving the problems of low operating efficiency and high labor intensity of traditional tire changers.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a mini tire changer, comprising a frame, a plurality of casters mounted on the bottom of the frame, a controller provided on one side of the frame, a drive component provided at the output end of the controller, a transmission component provided at the top of the drive component, a fixing component provided on the outer wall of the transmission component, a separation component provided at the top of the transmission component, and a tire pressing component provided on one side of the frame. The drive assembly includes a motor, which is fixedly connected to the output end of the controller. A sprocket and chain are fixedly connected to the output end of the motor. A differential is provided at the bottom of the other end of the sprocket and chain, and a universal joint is fixedly connected to the top end of the sprocket and chain. The transmission assembly includes a rotating shaft, which is fixedly connected to the top of the universal joint. A base is provided on the outer wall of the top of the rotating shaft. A threaded sleeve is fixedly connected to the top of the base. A threaded buckle is threadedly connected to the top of the threaded sleeve. A spline shaft is provided inside the threaded buckle. A limit ring is fixedly connected to one end of the spline shaft.

[0007] The above technical solution provides the following: the frame is an integral support structure with casters installed at the bottom for easy movement and positioning of the equipment; the controller is located on one side of the frame to control the start, stop, and operation of the drive components and various actuators; the motor transmits power to the differential via sprockets and chains, and then connects to the transmission components via a universal joint to achieve stable power output and steering adaptation; the rotating shaft is connected to the frame via the base, the splined shaft is coaxial with the rotating shaft, and the threaded sleeve and threaded buckle cooperate to achieve quick assembly and disassembly of the components.

[0008] Preferably, the fixing component includes a fixing ring, which is fixedly connected to the bottom outer wall of the base. A rotating ring is rotatably connected to the top of the fixing ring. A plurality of connecting rods are rotatably connected to the outer wall of the rotating ring. A clamping block is installed at one end of each of the plurality of connecting rods. A slider is fixedly connected to one side of each of the plurality of clamping blocks. A hoop is provided on the outer wall of each of the plurality of sliders. A screw is threaded to one end of one of the sliders. A hand crank is fixedly connected to one end of the screw.

[0009] The above technical solution involves: a fixed ring being fitted onto the outside of the transmission assembly, a rotating ring being able to rotate relative to the fixed ring, a connecting rod connecting the rotating ring and the slider, the slider driving the clamping block to move radially along the fixed ring, and a hand crank driving the screw to rotate, thereby tightening the hoop and achieving rapid clamping and shaft positioning of the wheel hub.

[0010] Preferably, the tire pressing assembly includes a support, which is fixedly connected to one side of the frame. One end of the support is rotatably connected to a pressure rod, and one end of the pressure rod is fixedly connected to a tire pressing plate. A sleeve is fixedly connected to one side of the frame, and one end of the sleeve is threaded with a bolt.

[0011] The above technical solution involves: the support being fixed to the frame; the pressure rod being hinged to the support via a sleeve; bolts being used to adjust the pressure of the pressure rod; and the tire pressure plate pressing down on the tire to achieve initial separation of the tire from the wheel hub.

[0012] Preferably, the separation component includes a first T-shaped sleeve, which is installed on the outer wall of the spline shaft, and a second T-shaped sleeve is provided on one side of the first T-shaped sleeve. A bird's head is fixedly connected to one end of the spline shaft.

[0013] Preferably, the top end of the rotating shaft has a groove, and the inner wall of the groove is adapted to the outer wall of the spline shaft.

[0014] Preferably, the limiting ring is fixedly connected to one end near the rotating shaft and is disposed between the threaded sleeve and the threaded buckle.

[0015] Through the above technical solution: the first T-shaped sleeve is connected to the spline shaft, the second T-shaped sleeve can extend, retract and rotate relative to the first T-shaped sleeve, and the bird head is used to pry the tire and wheel hub apart.

[0016] Preferably, one end of the fixing ring is L-shaped, and the screw is rotatably connected to the short end of the fixing ring.

[0017] Preferably, the bolt is threaded between the two ends of the pressure rod.

[0018] Preferably, the inside of the first T-shaped sleeve is provided with a spline groove, and the inner wall of the spline groove is adapted to the outer wall of the spline shaft.

[0019] The above technical solution utilizes the spline groove inside the first T-shaped sleeve to cooperate with the spline shaft, thereby limiting the spline shaft and preventing it from sliding inside the first T-shaped sleeve.

[0020] A method for using a mini tire changer includes the following steps: S1: First, place the tire on one side of the frame, align the tire pressure plate with the edge of the tire and the rim and press it down. Use an electric wrench to tighten the bolts. The bolts and sockets work together to retract the pressure bar and press the tire. This is the initial separation. S2: Tighten the threaded buckle to separate it from the threaded sleeve. At this time, the separation component is separated from the transmission component. Place the tire on the base and turn the hand crank to drive the screw to drive the slider to slide. At this time, the slider drives the clamp to expand synchronously, so that the clamp is fixed on the inner wall of the wheel hub. While fixing the wheel hub, it can also position the axle. Then align the spline shaft with the rotating shaft and tighten the threaded buckle to lock it. S3: The controller starts the motor to drive the separation component to separate the tire from the rim. The bird head is placed in the gap of the initial separation, and then the separation component is driven to rotate to make the tire detach from the rim.

[0021] The above technical solution involves: placing the tire on one side of the frame, aligning the tire pressure plate with the edge of the tire and rim, and pressing it down. Using an electric wrench, the bolts are tightened, and the bolts and sleeve work together to drive the pressure rod to retract, completing the initial separation. Next, the threaded clips are tightened to separate from the threaded sleeve, at which point the separation assembly disengages from the transmission assembly. The tire is then placed on the base, and the hand crank is turned to drive the screw, causing the slider to slide and simultaneously expand and fix the clamping block to the inner wall of the rim, fixing the rim and simultaneously completing the axle positioning. Afterward, the spline shaft is aligned with the rotating shaft, and the threaded clips are tightened to lock it. Finally, the motor is started via the controller, driving the separation assembly to separate the tire from the rim. The bird's head is placed into the initial separation gap, and the separation assembly is then driven to rotate, completely detaching the tire from the rim.

[0022] Working principle: First, the tire pressing assembly initially separates the tire to facilitate subsequent tire removal. The drive assembly transmits power to the transmission assembly via sprockets, chains, and universal joints, driving the rotating shaft and splined shaft to rotate, which in turn drives the separation assembly to rotate synchronously with the wheel hub. The fixing assembly drives the screw via a hand crank, tightening the clamping ring and causing the clamping block to radially clamp the wheel hub. At the same time, the cooperation of the rotating ring and connecting rod achieves precise alignment between the center of the wheel hub and the axis of the equipment. The fixing assembly can quickly fix the wheel hub and quickly position the axis, avoiding damage to the wheel hub during tire removal. The tire pressing assembly presses down on the edge of the tire with the pressing rod and pressing plate, initially separating the tire from the wheel hub bead. Then, the bird head of the separation assembly extends between the bead and the wheel hub, and completes the separation of the tire from the wheel hub as the wheel hub rotates.

[0023] This invention provides a miniature tire changer and its method of use. It has the following beneficial effects: 1. This invention can pre-separate the tire bead from the wheel hub through the tire pressing component, reducing the resistance of subsequent tire removal; the drive component provides stable rotational power, which, together with the bird head of the separation component, realizes automated tire removal; the transmission component adopts the use of threaded sleeve and threaded buckle; and the separation component realizes telescopic and steering adjustment through T-shaped sleeve, which greatly improves the work efficiency and reduces the intensity of manual labor.

[0024] 2. The present invention can precisely control the start, stop and speed of the drive component through the controller, and the fixing component can be driven by the hand crank and screw to quickly clamp the wheel hub and position the axle, so as to avoid the wheel hub shifting or shaking during the tire removal process and effectively protect the wheel hub from damage.

[0025] 3. The invention adopts a frame design and is equipped with casters, making it compact and flexible to move. It is suitable for small repair shops, outdoor rescue and other scenarios, and solves the problem of large tire changers being inconvenient to move. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is an enlarged view of point A in the present invention; Figure 5 This is a schematic diagram of the driving component of the present invention; Figure 6 This is an exploded view of the transmission component of the present invention; Figure 7 This is a schematic diagram of the fixing component of the present invention; Figure 8 This is a top view of the fixed component of the present invention.

[0027] The components are as follows: 1. Frame; 2. Casters; 3. Controller; 4. Drive assembly; 401. Motor; 402. Sprocket and chain; 403. Differential; 404. Universal shaft; 5. Transmission assembly; 501. Shaft; 502. Base; 503. Threaded sleeve; 504. Threaded buckle; 505. Splined shaft; 506. Limiting ring; 6. Fixing assembly; 601. Fixing ring; 602. Rotary ring; 603. Connecting rod; 604. Clamping block; 605. Slider; 606. Hoop ring; 607. Screw; 608. Hand crank; 7. Separation assembly; 701. First T-sleeve; 702. Second T-sleeve; 703. Bird head; 8. Tire pressing assembly; 801. Support; 802. Pressure rod; 803. Tire pressing plate; 804. Sleeve; 805. Bolt. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described 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. Example

[0029] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a mini tire changer, including a frame 1, a plurality of casters 2 installed at the bottom of the frame 1, a controller 3 provided on one side of the frame 1, a drive component 4 provided at the output end of the controller 3, a transmission component 5 provided at the top of the drive component 4, a fixing component 6 provided on the outer wall of the transmission component 5, a separation component 7 provided at the top of the transmission component 5, and a tire pressing component 8 provided on one side of the frame 1. The drive assembly 4 includes a motor 401, which is fixedly connected to the output end of the controller 3. A sprocket and chain 402 are fixedly connected to the output end of the motor 401. A differential 403 is provided at the bottom of the other end of the sprocket and chain 402. A universal joint 404 is fixedly connected to the top end of the sprocket and chain 402. The transmission assembly 5 includes a rotating shaft 501, which is fixedly connected to the top of the universal joint 404. A base 502 is provided on the outer wall of the top of the rotating shaft 501. A threaded sleeve 503 is fixedly connected to the top of the base 502. A threaded buckle 504 is threadedly connected to the top of the threaded sleeve 503. A spline shaft 505 is provided inside the threaded buckle 504. A limit ring 506 is fixedly connected to one end of the spline shaft 505.

[0030] Specifically, the motor 401 transmits power to the differential 403 via sprockets and chain 402, and then connects to the transmission assembly 5 via the universal joint 404 to achieve stable power output and steering adaptation. The transmission assembly 5 consists of a rotating shaft 501, a base 502, a threaded sleeve 503, a threaded buckle 504, a splined shaft 505, and a limiting ring 506. The rotating shaft 501 is connected to the frame 1 via the base 502. The splined shaft 505 is coaxially arranged with the rotating shaft 501. The threaded sleeve 503 and the threaded buckle 504 cooperate to achieve quick assembly and disassembly of the components. The limiting ring 506 is used to limit the axial displacement of the splined shaft 505.

[0031] Reference Figures 7-8 The fixing component 6 includes a fixing ring 601, which is fixedly connected to the bottom outer wall of the base 502. The top of the fixing ring 601 is rotatably connected to a rotating ring 602. The outer wall of the rotating ring 602 is rotatably connected to multiple connecting rods 603. A clamping block 604 is installed at one end of the multiple connecting rods 603. A slider 605 is fixedly connected to one side of the multiple clamping blocks 604. A hoop 606 is provided on the outer wall of the multiple sliders 605. A screw 607 is threadedly connected to one end of one slider 605. A hand crank handle 608 is fixedly connected to one end of the screw 607.

[0032] Specifically, the fixed ring 601 is sleeved on the outside of the transmission assembly 5, the rotating ring 602 can rotate relative to the fixed ring 601, the connecting rod 603 connects the rotating ring 602 and the slider 605, the slider 605 drives the clamping block 604 to move radially along the fixed ring 601, and the hand crank 608 drives the screw 607 to rotate, so that the hoop 606 is tightened, realizing the rapid clamping of the wheel hub and the positioning of the shaft center.

[0033] Reference Figure 4 The tire pressing assembly 8 includes a support 801, which is fixedly connected to one side of the frame 1. One end of the support 801 is rotatably connected to a pressure rod 802, and one end of the pressure rod 802 is fixedly connected to a tire pressing plate 803. A sleeve 804 is fixedly connected to one side of the frame 1, and one end of the sleeve 804 is threadedly connected to a bolt 805.

[0034] Specifically, the support 801 is fixed to the frame 1, the pressure rod 802 is hinged to the support 801 through the sleeve 804, the bolt 805 is used to adjust the pressure of the pressure rod 802, and the tire pressure plate 803 can press down on the tire to achieve the initial separation of the tire from the wheel hub.

[0035] Reference Figures 1-2 The separation component 7 includes a first T-shaped sleeve 701, which is installed on the outer wall of the spline shaft 505. A second T-shaped sleeve 702 is provided on one side of the first T-shaped sleeve 701, and a bird head 703 is fixedly connected to one end of the spline shaft 505.

[0036] Reference Figure 6The top of the rotating shaft 501 has a groove, and the inner wall of the groove is adapted to the outer wall of the spline shaft 505.

[0037] Reference Figure 6 The limiting ring 506 is fixedly connected to one end near the rotating shaft 501 and is located between the threaded sleeve 503 and the threaded buckle 504.

[0038] Specifically, the first T-shaped sleeve 701 is connected to the spline shaft 505, the second T-shaped sleeve 702 can extend, retract and rotate relative to the first T-shaped sleeve 701, and the bird head 703 is used to pry the tire and wheel hub apart.

[0039] Reference Figures 7-8 One end of the retaining ring 601 is L-shaped, and the screw 607 is rotatably connected to the short end of the retaining ring 601.

[0040] Reference Figure 7 Bolt 805 is threadedly connected between the two ends of pressure rod 802.

[0041] Reference Figure 2 The first T-shaped sleeve 701 has a spline groove inside, and the inner wall of the spline groove is adapted to the outer wall of the spline shaft 505.

[0042] A method for using a mini tire changer includes the following steps: S1: First, place the tire on one side of the frame 1, align the tire pressing plate 803 with the edge of the tire and the rim and press it down. Use an electric wrench to turn the bolt 805. The bolt 805 and the socket 804 cooperate to make the pressure rod 802 retract to press the tire. This is the initial separation. S2: Tighten the threaded buckle 504 to separate it from the threaded sleeve 503. At this time, the separation component 7 is separated from the transmission component 5. Place the tire on the base 502 and turn the hand crank 608 to drive the screw 607 to drive the slider 605 to slide. At this time, the slider 605 drives the clamp 604 to expand synchronously, so that the clamp 604 is fixed on the inner wall of the wheel hub. While fixing the wheel hub, the axle can also be positioned. Then align the spline shaft 505 with the rotating shaft 501 and tighten the threaded buckle 504 to lock it. S3: The controller 3 starts the motor 401 to drive the separation component 7 to separate the tire from the wheel hub, places the bird head 703 in the gap of the initial separation, and then drives the separation component 7 to rotate so that the tire is removed from the wheel hub.

[0043] Specifically, first, place the tire on one side of the frame 1, align the tire pressure plate 803 with the edge of the tire and rim and press it down. Use an electric wrench to tighten the bolt 805. The bolt 805 and the sleeve 804 work together to drive the pressure rod 802 to retract, completing the initial separation. Next, tighten the threaded buckle 504 to separate it from the threaded sleeve 503. At this time, the separation component 7 is disengaged from the transmission component 5. Place the tire on the base 502, turn the hand crank 608 to drive the screw 607, causing the slider 605 to slide, which drives the clamp 604 to expand synchronously and fix it to the inner wall of the rim. Fixing the rim and completing the axle center positioning at the same time. Then, align the spline shaft 505 with the rotating shaft 501 and tighten the threaded buckle 504 to lock it. Finally, start the motor 401 through the controller 3 to drive the separation component 7 to separate the tire and rim. Place the bird head 703 into the gap of the initial separation and drive the separation component 7 to rotate, so that the tire is completely separated from the rim.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A miniature tire changer, comprising a frame (1), characterized in that: The bottom of the frame (1) is equipped with multiple casters (2), a controller (3) is provided on one side of the frame (1), a drive assembly (4) is provided at the output end of the controller (3), a transmission assembly (5) is provided at the top of the drive assembly (4), a fixing assembly (6) is provided on the outer wall of the transmission assembly (5), a separation assembly (7) is provided at the top of the transmission assembly (5), and a tire pressing assembly (8) is provided on one side of the frame (1). The drive assembly (4) includes a motor (401), which is fixedly connected to the output end of the controller (3). A sprocket and chain (402) are fixedly connected to the output end of the motor (401). A differential (403) is provided at the bottom of the other end of the sprocket and chain (402). A universal joint (404) is fixedly connected to the top end of the sprocket and chain (402). The transmission assembly (5) includes a rotating shaft (501), which is fixedly connected to the top end of the universal joint (404). A base (502) is provided on the outer wall of the top end of the rotating shaft (501). A threaded sleeve (503) is fixedly connected to the top end of the base (502). A threaded buckle (504) is threadedly connected to the top end of the threaded sleeve (503). A spline shaft (505) is provided inside the threaded buckle (504). A limit ring (506) is fixedly connected to one end of the spline shaft (505).

2. The miniature tire changer according to claim 1, characterized in that: The fixing component (6) includes a fixing ring (601), which is fixedly connected to the bottom outer wall of the base (502). A rotating ring (602) is rotatably connected to the top of the fixing ring (601). A plurality of connecting rods (603) are rotatably connected to the outer wall of the rotating ring (602). A clamping block (604) is installed at one end of the plurality of connecting rods (603). A slider (605) is fixedly connected to one side of the plurality of clamping blocks (604). A hoop (606) is provided on the outer wall of the plurality of sliders (605). A screw (607) is threaded to one end of one of the sliders (605). A hand crank handle (608) is fixedly connected to one end of the screw (607).

3. A miniature tire changer according to claim 1, characterized in that: The tire pressing assembly (8) includes a support (801), which is fixedly connected to one side of the frame (1). One end of the support (801) is rotatably connected to a pressure rod (802), and one end of the pressure rod (802) is fixedly connected to a tire pressing plate (803). One side of the frame (1) is fixedly connected to a sleeve (804), and one end of the sleeve (804) is threadedly connected to a bolt (805).

4. A miniature tire changer according to claim 1, characterized in that: The separation component (7) includes a first T-shaped sleeve (701), which is installed on the outer wall of the spline shaft (505). A second T-shaped sleeve (702) is provided on one side of the first T-shaped sleeve (701), and a bird head (703) is fixedly connected to one end of the spline shaft (505).

5. A miniature tire changer according to claim 1, characterized in that: The top end of the rotating shaft (501) has a groove, and the inner wall of the groove is adapted to the outer wall of the spline shaft (505).

6. A miniature tire changer according to claim 1, characterized in that: The limiting ring (506) is fixedly connected to one end near the rotating shaft (501) and is disposed between the threaded sleeve (503) and the threaded buckle (504).

7. A miniature tire changer according to claim 2, characterized in that: One end of the fixing ring (601) is L-shaped, and the screw (607) is rotatably connected to the short end of the fixing ring (601).

8. A miniature tire changer according to claim 3, characterized in that: The bolt (805) is threaded between the two ends of the pressure rod (802).

9. A miniature tire changer according to claim 4, characterized in that: The first T-shaped sleeve (701) has a spline groove inside, and the inner wall of the spline groove is adapted to the outer wall of the spline shaft (505).

10. A method of using a mini tire changer, as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: First, place the tire on one side of the frame (1), align the tire pressure plate (803) with the edge of the tire and the rim and press it down. Use an electric wrench to turn the bolt (805). The bolt (805) and the sleeve (804) work together to make the pressure rod (802) retract to press the tire. This is the initial separation. S2: Tighten the threaded buckle (504) to separate it from the threaded sleeve (503). At this time, the separation component (7) is separated from the transmission component (5). Place the tire on the base (502), turn the hand crank (608) to drive the screw (607) to drive the slider (605) to slide. At this time, the slider (605) drives the clamp (604) to expand synchronously, so that the clamp (604) is fixed on the inner wall of the wheel hub. While fixing the wheel hub, the axle can also be positioned. Then align the spline shaft (505) with the rotating shaft (501) and tighten the threaded buckle (504) to lock it. S3: Start the motor (401) through the controller (3) to drive the separation component (7) to separate the tire from the wheel hub, place the bird head (703) in the gap of the initial separation, and then drive the separation component (7) to rotate so that the tire is separated from the wheel hub.

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