Cutter for taking out stone on tire patterns
By designing the pusher and hook sections of the stone removal knife in the tire tread, the problem of difficulty in removing stones when the space between the tire and the wheel chock is limited is solved, enabling quick and safe removal of stones without obstructing the view.
Patent Information
- Application Number
- CN202520366989.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing tire stone removers cannot effectively remove stones when the space between the tire and the wheel chock is limited, and the rubber layer obstructs the view, affecting the user experience.
Design a tire tread stone removal knife, which is equipped with a pusher and a hook. The pusher uses a curved cone and a support to pry out the stone, while the hook uses a blade and an end hook to pull out the stone. The baffle is made of transparent material so as not to obstruct the view.
In environments where space is limited between the tire and the wheel chock, it can effectively remove stones without obstructing the view, thus improving ease of use and safety.
Smart Images

Figure CN223835557U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a handheld tool, specifically a stone removal knife for tire treads. Background Technology
[0002] To meet the needs of anti-slip, drainage, noise reduction, and comfort, the outer circumference of the wheel is decorated with a specific pattern, namely the tire tread.
[0003] Small stones on the road can easily get stuck in the treads of tires while a car is driving, and they are difficult to remove on their own. These stones can affect the stress, wear resistance, and safety of the tires during driving, so they need to be removed promptly.
[0004] Existing technology, such as the Chinese invention patent with publication number "CN110304026B" entitled "Tire Stone Cleaner", discloses the following technical solution: "A tire stone cleaner is composed of an adjustment knob, a hand sleeve, a sleeve, an auxiliary wheel, a screw, a cleaning hook, a splash guard, a support wheel, a connecting rod, a sliding sleeve, a support rod, a limiting block, and a screw. The hand sleeve is placed on the sleeve, and the surface of the hand sleeve has multiple annular pits and anti-slip protrusions. The connecting rod is placed inside the sleeve, and the adjustment knob is connected to one end of the connecting rod, with the adjustment knob located on one end face of the sleeve. The sleeve is composed of two parts; the cleaning hook is screwed to the other end of the sliding sleeve via a thread."
[0005] The above solution uses a lever principle to remove stones, which is less strenuous and allows the stone to roll along the tire surface, reducing tire rubbing. It also provides protection during stone removal to prevent stones from flying.
[0006] The cleaning hook described above can be inserted into the gap at the bottom of the stone to pry it out; however, the action of inserting the cleaning hook into the gap at the bottom of the stone is to push the handle forward. When the space between the tire and the wheel chock is limited and the handle cannot be pushed forward, and the handle can only be pulled back, the stone cannot be removed.
[0007] Furthermore, the splash guard with a rubber layer obstructs the view when the cleaning hook is inserted into the stones, resulting in a poor user experience. Utility Model Content
[0008] The purpose of this utility model is:
[0009] Design a tire tread stone removal knife with a pusher and a hook at the end. It can push forward to push out stones from the tire tread and pull back to hook out stones from the tire tread. It is convenient to use in environments where the space between the tire and the wheel chock is limited, and does not obstruct the view.
[0010] To achieve the above objectives, the present invention provides the following technical solution:
[0011] A tire tread stone removal knife includes a handle, a connecting rod, a pusher section, and a hook section. One end of the connecting rod is connected to the handle, and the other end is connected to the pusher section and the hook section. The pusher section and the hook section are located on opposite sides of the connecting rod's axial direction. The pusher section includes a conical head and a support section. The conical head has a pointed tip that faces away from the handle, and the support section is located between the conical head and the handle. The hook section includes a blade body with a wedge and an end hook. The end hook is located at the end of the blade body and extends towards the handle. The knife also includes a baffle made of transparent material.
[0012] Furthermore, the curved cone head is arc-shaped, and the curved cone head is connected to the end of the connecting rod away from the handle.
[0013] Furthermore, the support portion is located on the curved cone head, the support portion is connected to the connection between the curved cone head and the connecting rod, and the support portion extends in a direction away from the curved cone head.
[0014] Furthermore, the blade body is connected to the end of the connecting rod away from the handle, the end hook is located at the end of the blade body, and the extension direction of the end hook is parallel to the axis of the connecting rod.
[0015] Furthermore, the wedge is located at the end of the end hook and faces the connecting rod, and the end hook is integrally formed with the blade body.
[0016] Furthermore, a baffle is provided at the end of the connecting rod away from the handle, and the baffle is located between the pusher section and the hook section.
[0017] The beneficial effects of this utility model are as follows:
[0018] A tire tread stone removal knife has a pusher section and a hook section at the end of the connecting rod away from the handle. The pusher section includes a curved cone head and a support section, while the hook section includes a blade body and an end hook. The curved cone head of the pusher section can push forward to push out stones from the tire tread, and the end hook of the hook section can pull backward to hook out stones from the tire tread. The push and pull can be selected according to the actual situation, making it convenient for use in environments where the space between the tire and the wheel chock is limited. At the same time, a baffle is located between the pusher section and the hook section. It is made of transparent material and does not obstruct the view, so that the user can quickly align and remove stones from the tire tread. Attached Figure Description
[0019] Figure 1 This is a three-dimensional view of the overall structure of a tire tread stone removal tool according to this utility model.
[0020] Figure 2 for Figure 1 A three-dimensional view of the structure shown from another perspective.
[0021] Figure 3 This is a partial structural diagram of a stone removal tool for tire treads according to the present invention.
[0022] The attached figures are labeled as follows:
[0023] 1. Handle; 2. Connecting rod; 3. Pusher section; 31. Conical head; 32. Support section; 4. Hook section; 41. Blade body; 42. Wedge section; 43. End hook; 5. Baffle. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.
[0025] refer to Figures 1 to 3 A tire tread stone removal knife includes a handle 1, a connecting rod 2, a pusher part 3, and a hook part 4; the handle 1 is for easy gripping; the connecting rod 2 is for connecting.
[0026] One end of the connecting rod 2 is connected to the handle 1, and the other end of the connecting rod 2 is connected to the pusher part 3 and the hook part 4; wherein, the pusher part 3 and the hook part 4 are used to push forward to pry out stones and pull back to hook out stones, respectively.
[0027] The pusher section 3 and the hook section 4 are located on both sides of the axis of the connecting rod 2; in actual use, one of them can be used, and the two structures do not interfere with each other.
[0028] The pusher part 3 includes a curved cone head 31 and a support part 32. The curved cone head 31 has a tip and the tip is directed away from the handle 1. The curved cone head 31 is used to insert into the lower part of the stone and pry the stone out along the groove or gap.
[0029] The support part 32 is located between the curved cone head 31 and the handle 1; the support part 32 is used to provide a fulcrum when prying out the stone, so that the entire removal knife forms a lever and the stone is pried out using the lever principle.
[0030] The hook part 4 includes a blade body 41, on which a wedge part 42 and an end hook 43 are provided. The end hook 43 is located at the end of the blade body 41 and extends toward the handle 1. The end hook 43 is used to insert into the groove or crevice where the stone is located and hook the stone out along the groove or crevice.
[0031] The aforementioned tire tread stone removal knife also includes a baffle 5. The baffle 5 is used to block the stones that are pried out or hooked out, preventing them from flying. The baffle 5 is made of transparent material, so it will not obstruct the user's view, making it easy to aim at the stones for operation.
[0032] The curved cone head 31 is arc-shaped and is connected to the end of the connecting rod 2 away from the handle 1. The curved cone head 31 gradually thickens from the tip to the connecting rod 2.
[0033] The support part 32 is located on the curved cone head 31. The support part 32 is connected to the connection between the curved cone head 31 and the connecting rod 2. The support part 32 extends in a direction away from the curved cone head 31. The support part 32 and the curved cone head 31 are integrally formed, and the overall structure has high strength.
[0034] The blade body 41 is connected to the end of the connecting rod 2 away from the handle 1. The end hook 43 is located at the end of the blade body 41, and the extension direction of the end hook 43 is parallel to the axis of the connecting rod 2. Thus, when the handle 1 is pulled back, the end hook 43 can hook the stone out of the tire tread.
[0035] The wedge 42 is located at the end of the end hook 43 and faces the connecting rod 2. The end hook 43 is integrally formed with the blade body 41. The wedge 42 includes a bevel, so that the size of the end of the end hook 43 away from the blade body 41 is smaller than the size of the end of the end hook 43 close to the blade body 41, so that the stone can be hooked out by the action of the bevel.
[0036] A baffle 5 is provided at the end of the connecting rod 2 away from the handle 1. The baffle 5 is located between the pusher part 3 and the hook part 4. The position of the baffle 5 corresponds to the tip of the curved cone head 31 and the wedge part 42 of the end hook 43, thereby preventing the stones from suddenly flying outward when they just leave the groove or gap.
[0037] The specific usage of this utility model is as follows:
[0038] When a stone gets stuck in the tread grooves or gaps of a car tire and needs to be removed, first determine the position of the stone relative to the wheel and the wheel well. Based on the available space, decide whether to pry the stone out by pushing forward or to pull it out by hooking it back.
[0039] If the stone is pried out by pushing forward, hold the handle 1, move the hook part 4 toward the stone, and insert the tip of the curved cone 31 into the groove or gap where the stone is located until it reaches the bottom of the stone. Then press the handle 1 down, the support part 32 presses against the tire, and using the lever principle, the support part 32 acts as a fulcrum, and the curved cone 31 pries the stone out of the groove or gap.
[0040] When the stones are pried out, the baffle 5 can block the stones and prevent them from flying out quickly and causing damage.
[0041] If the only way to remove the stone is by pulling back, hold the handle 1, move the hook 4 toward the stone, and make the hook 4 face down, so that the end hook 43 passes over the stone and pulls back toward the bottom of the stone; then continue to pull back the handle 1, and the wedge 42 on the end hook 43, under the action of the inclined plane, will hook the stone out of the groove or gap of the tire tread.
[0042] When a stone is hooked out, the baffle 5 can block the stone and prevent it from flying rapidly and causing damage.
[0043] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.
Claims
1. A tool for removing stones from tire treads, characterized in that: It includes a handle (1), a connecting rod (2), a pusher (3), and a hook (4); one end of the connecting rod (2) is connected to the handle (1), and the other end of the connecting rod (2) is connected to the pusher (3) and the hook (4); the pusher (3) and the hook (4) are located on both sides of the axis of the connecting rod (2); the pusher (3) includes a curved cone (31) and a support (32), the curved cone (31) has a tip and the tip is directed away from the handle (1), and the support (32) is located between the curved cone (31) and the handle (1); the hook (4) includes a blade (41), the blade (41) is provided with a wedge (42) and an end hook (43), the end hook (43) is located at the end of the blade (41) and extends toward the handle (1); it also includes a baffle (5), the baffle (5) is made of transparent material.
2. The tire tread stone removal knife according to claim 1, characterized in that: The curved cone (31) is arc-shaped and is connected to the end of the connecting rod (2) away from the handle (1).
3. The tire tread stone removal knife according to claim 2, characterized in that: The support (32) is located on the conical head (31), the support (32) is connected to the connection between the conical head (31) and the connecting rod (2), and the support (32) extends in a direction away from the conical head (31).
4. The tire tread stone removal knife according to claim 1, characterized in that: The blade (41) is connected to the end of the connecting rod (2) away from the handle (1), and the end hook (43) is located at the end of the blade (41), and the extension direction of the end hook (43) is parallel to the axis of the connecting rod (2).
5. The tire tread stone removal knife according to claim 4, characterized in that: The wedge (42) is located at the end of the end hook (43) and faces the connecting rod (2). The end hook (43) is integrally formed with the blade body (41).
6. A tire tread stone removal knife according to any one of claims 1-5, characterized in that: The end of the connecting rod (2) away from the handle (1) is also provided with a baffle (5), which is located between the push knife part (3) and the hook knife part (4).
Citation Information
Patent Citations
Tire stone remover
CN110304026B