Manual tire expander

Abstract

The utility model discloses a manual tire expander which comprises a connecting rod, the top of the connecting rod is provided with a plurality of tooth grooves, the outer wall of the connecting rod is sleeved with a sliding sleeve in a sliding mode, a gear is rotationally connected between the inner walls of the two sides of the sliding sleeve, and the gear is meshed with the tooth grooves. And a limiting clamping jaw is rotationally connected between the inner walls of the two sides of the sliding sleeve, the limiting clamping jaw is meshed with the gear, and a rotating frame is rotationally connected between the outer walls of the two sides of the sliding sleeve. The adjusting handle is pressed downwards to drive the pressing claw to move downwards, so that the gear is pushed to rotate clockwise, then the sliding sleeve is driven to move on the connecting rod under the meshing action of the gear and the tooth groove, the second opening frame is driven to be far away from the first opening frame, and then a tire is expanded outwards; and the reverse rotation of the gear is prevented through the meshing of the limiting clamping jaw and the gear, so that the falling of the tire expander is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile maintenance, in particular to a manual tire expander. Background Art

[0002] A necessary tool in the tire maintenance process is the tire expander, which is a machine that expands the distance between the tire beads on both sides and can be turned and rotated. It is mainly used for tire inspection and maintenance.

[0003] At present, in the use of the existing tire expander, the tire beads on both sides are easy to fall off during the expansion process, and it is inconvenient to carry, which affects the practicality of the tire expander. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that tire rims on both sides are easy to fall off during the expansion process during use and the tire expander is inconvenient to carry, thereby affecting the practicality of the tire expander, and a manual tire expander is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A manual tire expander comprises a connecting rod, wherein the connecting rod has a plurality of tooth grooves on the top, a sliding sleeve is provided on the outer wall sliding sleeve, a gear is rotatably connected between the inner walls on both sides of the sliding sleeve, the gear is meshed with the tooth grooves, a limiting claw is rotatably connected between the inner walls on both sides of the sliding sleeve, the limiting claw is meshed with the gear, a rotating frame is rotatably connected between the outer walls on both sides of the sliding sleeve, a pressure claw is rotatably connected between the inner walls on both sides of the rotating frame, the pressure claw can be meshed with the gear, an adjustment handle is fixedly connected to one end of the rotating frame, and torsion springs are sleeved on both ends of the limiting claw and both ends of the pressure claw.

[0007] Furthermore, a first open frame is welded to the bottom of the connecting rod, a second open frame is welded to the bottom outer wall of the sliding sleeve, and an anti-slip sleeve is bonded to the outer wall of the adjusting handle.

[0008] Furthermore, one side of the first open frame and one side of the second open frame are both fixedly connected with an arc-shaped plate, and one side of the arc-shaped plate is bonded with a plurality of anti-slip strips.

[0009] Furthermore, a handle is welded on one end of the connecting rod.

[0010] Furthermore, the other end of the connecting rod is rotatably connected to a roller.

[0011] Furthermore, an anti-slip groove is provided on the outer wall of the handle.

[0012] The beneficial effects of the utility model are:

[0013] 1. Press the adjusting handle downward to drive the pressing claw to move downward, thereby pushing the gear to rotate clockwise. Then, the sliding sleeve is driven to move on the connecting rod under the action of the meshing of the gear and the tooth groove, thereby driving the second support frame away from the first support frame, thereby expanding the tire outward, and the meshing of the limit claw and the gear prevents the gear from reversing, thereby preventing the tire expander from falling off.

[0014] 2. A roller is arranged at one end of the connecting rod, and the tire expander is dragged to make the roller roll on the ground, so that the tire expander is easy to carry.

[0015] 3. The setting of the roller can increase the friction between the arc plate and the tire, thereby further preventing the arc plate from slipping out of the tire, so as not to affect the efficiency of tire expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of a manual tire expander proposed by the utility model;

[0017] Figure 2 This is a partial cross-sectional structural schematic diagram of Embodiment 1 of a manual tire expander proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of a second embodiment of a manual tire expander proposed by the utility model;

[0019] Figure 4 This is a side structural schematic diagram of Example 2 of a manual tire expander proposed by the utility model.

[0020] In the figure: 1. connecting rod; 2. tooth groove; 3. first open frame; 4. sliding sleeve; 5. second open frame; 6. arc plate; 7. anti-slip strip; 8. gear; 9. rotating frame; 10. adjustment handle; 11. limit claw; 12. pressure claw; 13. torsion spring; 14. handle; 15. roller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 2 A manual tire expander comprises a connecting rod 1, a plurality of tooth grooves 2 are arranged on the top of the connecting rod 1, a first support frame 3 is welded on the bottom of the connecting rod 1, a sliding sleeve 4 is arranged on the outer wall sliding sleeve of the connecting rod 1, a second support frame 5 is welded on the outer wall of the bottom of the sliding sleeve 4, and the second support frame 5 cooperates with the first support frame 3 to facilitate support;

[0023] A gear 8 is rotatably connected between the inner walls of both sides of the sliding sleeve 4 through a pin shaft, and the gear 8 can mesh with the tooth groove 2. A limit claw 11 is rotatably connected between the inner walls of both sides of the sliding sleeve 4 through a pin shaft, and the limit claw 11 can mesh with the gear 8;

[0024] The outer walls of both sides of the sliding sleeve 4 are rotatably connected with a rotating frame 9 through a pin shaft, and the inner walls of both sides of the rotating frame 9 are rotatably connected with a pressure claw 12 through a pin shaft, and the pressure claw 12 can mesh with the gear 8. An adjustment handle 10 is welded at one end of the rotating frame 9. Pressing the adjustment handle 10 downward drives the pressure claw 12 to move downward, and then the gear 8 is driven to rotate clockwise under the action of the engagement between the pressure claw 12 and the gear 8, and then the sliding sleeve 4 is driven to move on the connecting rod 1 under the action of the engagement between the gear 8 and the tooth groove 2, thereby driving the second support frame 5 away from the first support frame 3, so that the tire expands outward;

[0025] Both ends of the limiting claw 11 and the pressing claw 12 are sleeved with torsion springs 13 , and the limiting claw 11 is meshed with the gear 8 under the action of the torsion spring 13 , thereby preventing the gear 8 from reversing.

[0026] The working principle of this embodiment is as follows: when in use, first, push the limit claw 11 to separate it from the gear 8, then push the adjustment handle 10 to drive the sliding sleeve 4 to move on the connecting rod 1, thereby driving the second support frame 5 to move close to the first support frame 3, then relax the limit claw 11, and under the action of the torsion spring 13, the limit claw 11 is engaged with the gear 8 to prevent the reverse rotation of the gear 8, then, insert the first support frame 3 and the second support frame 5 into the tire, then press the adjustment handle 10 downward to drive the pressure claw 12 to move downward, and then drive the gear 8 to rotate clockwise under the action of the pressure claw 12 engaging with the gear 8, and then, The gear 8 is meshed with the tooth groove 2 to drive the sliding sleeve 4 to move on the connecting rod 1, thereby driving the second opening frame 5 away from the first opening frame 3, so that the tire is expanded outward, and then the adjustment handle 10 is lifted upward to separate the pressure claw 12 from the gear 8. At this time, the limit claw 11 is meshed with the gear 8 to prevent the gear 8 from reversing, and then the pressure claw 12 is meshed with the gear 8 again under the action of the torsion spring 13, and then the adjustment handle 10 is pressed down again to make the gear 8 rotate, thereby continuing to drive the second opening frame 5 to move, so that the tire continues to expand outward, and then the tire is expanded to the required degree according to the above steps;

[0027] Example 2

[0028] The difference between this embodiment and embodiment 1 is that one side of the first support frame 3 and one side of the second support frame 5 are both fixed with an arc plate 6 by bolts, and a plurality of anti-skid strips 7 are bonded to one side of the arc plate 6, thereby increasing the friction between the arc plate 6 and the tire, thereby preventing the arc plate 6 from slipping out of the tire, and a handle 14 is welded to one end of the connecting rod 1, and an anti-skid groove is provided on the outer wall of the handle 14, thereby facilitating the holding of the connecting rod 1, and a roller 15 is rotatably connected to one end of the connecting rod 1, and the tire expander is dragged to make the roller 15 roll on the ground, thereby facilitating the carrying of the tire expander.

[0029] When not in use, the handle 14 is held by hand to drag the roller 15 to roll on the ground, so that the tire expander is easy to carry.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual tire expander, comprising a connecting rod (1), characterized in that: The top of the connecting rod (1) is provided with a plurality of tooth grooves (2); the outer wall sliding sleeve of the connecting rod (1) is provided with a sliding sleeve (4); a gear (8) is rotatably connected between the inner walls on both sides of the sliding sleeve (4); the gear (8) is meshed with the tooth groove (2); a limit clamping claw (11) is rotatably connected between the inner walls on both sides of the sliding sleeve (4); the limit clamping claw (11) is meshed with the gear (8); a rotating frame (9) is rotatably connected between the outer walls on both sides of the sliding sleeve (4); a pressure claw (12) is rotatably connected between the inner walls on both sides of the rotating frame (9); the pressure claw (12) can mesh with the gear (8); one end of the rotating frame (9) is fixed An adjusting handle (10) is connected, and both ends of the limiting claw (11) and the pressing claw (12) are sleeved with torsion springs (13). A first support frame (3) is welded to the bottom of the connecting rod (1), and a second support frame (5) is welded to the bottom outer wall of the sliding sleeve (4). One side of the first support frame (3) and one side of the second support frame (5) are fixedly connected with an arc plate (6), and one side of the arc plate (6) is bonded with a plurality of anti-slip strips (7). A handle (14) is welded to one end of the connecting rod (1), and an anti-slip groove is provided on the outer wall of the handle (14). The other end of the connecting rod (1) is rotatably connected with a roller (15).

2. A manual tire expander according to claim 1, characterized in that: An anti-slip sleeve is bonded to the outer wall of the adjustment handle (10).

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