crowbar

Abstract

The utility model relates to vehicle maintenance technical field provides a crowbar. The utility model provides a crowbar, include: crowbar body and abutting unit, abutting unit sets up on the lateral wall of crowbar body, in the state that the lateral wall of crowbar body is in abutment with the outer edge of wheel rim, abutting unit is used for abutting with the one end surface of wheel rim. Solve the technical problem that the lateral wall of crowbar in the prior art is easy to damage wheel rim, and the lateral wall of crowbar is easy to slip on the edge of wheel rim.

Description

Technical Field

[0001] This utility model relates to the field of vehicle maintenance technology, specifically to a pry bar. Background Technology

[0002] In the field of vehicle repair, especially in tire removal and installation operations for large vehicles such as heavy trucks and construction machinery, a tire pry bar is an indispensable tool for repair personnel. Its core function is to use leverage to pry the tire bead off the rim edge, making it easier to install a new tire.

[0003] Existing pry bars mostly use a single metal rod structure with a flat pry head at the front end. In use, the wheel assembly is first placed flat on the ground or other supporting base. Then, the pry bar is held upright, and the pry head is inserted into the gap between the tire bead and the rim. Force is then applied to the pry bar towards the rim. At this point, the sidewall of the pry bar contacts and abuts against the edge of the rim, acting as a fulcrum. Using the lever principle, the tire bead can be pried up above the rim edge.

[0004] However, the cross-section of the pry bar is circular, and the edge of the rim is curved. When the side wall of the pry bar abuts against the edge of the rim, the two are in line contact, the contact area is small, and there is only one connection point. This not only easily damages the edge of the rim, but also the side wall of the pry bar is prone to slipping on the edge of the rim, causing the fulcrum position to drift. The operator needs to frequently adjust the angle of the pry bar to ensure that the position of the fulcrum remains unchanged. As a result, the work efficiency is greatly reduced. Utility Model Content

[0005] This invention provides a pry bar to solve the technical problems in the prior art where the side wall of the pry bar easily damages the wheel rim and the side wall of the pry bar easily slips on the edge of the wheel rim.

[0006] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:

[0007] This utility model provides a pry bar, including: a pry bar body and abutting unit; the abutting unit is disposed on the side wall of the pry bar body, and when the pry bar body is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body abuts against the outer edge of the rim, the abutting unit is used to abut against one end face of the rim.

[0008] According to one embodiment of the present invention, the abutting unit has an arc-shaped abutting surface. When the pry bar body is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body abuts against the outer edge of the rim, the arc-shaped abutting surface is used to abut against one end face of the rim.

[0009] According to one embodiment of the present invention, the side wall of the pry bar body has multiple connecting structures, the multiple connecting structures are arranged at intervals along the axial direction of the pry bar body, and the abutment unit is detachably disposed on one of the multiple connecting structures.

[0010] According to one embodiment of the present invention, the connecting structure is a connecting hole, and the abutting unit can be inserted into the connecting hole.

[0011] According to one embodiment of the present invention, the abutting unit includes a connecting and mating mechanism and an abutting mechanism; the connecting and mating mechanism passes through the connecting hole; the abutting mechanism is connected to the connecting and mating mechanism, is perpendicular to the connecting and mating mechanism, and has the arc-shaped abutting surface.

[0012] According to one embodiment of the present invention, the connecting hole is a threaded hole, the connecting and mating mechanism is a screw, and the screw is threaded to the threaded hole.

[0013] According to one embodiment of the present invention, the connecting hole is a through hole.

[0014] According to one embodiment of the present invention, the connecting and mating mechanism is embedded in the through hole.

[0015] According to one embodiment of the present invention, the free end of the connecting and mating mechanism has a threaded section; the abutting unit further includes a fastening nut, which is screwed to the threaded section, so that the pry bar body is clamped between the connecting and mating mechanism and the fastening nut.

[0016] According to one embodiment of the present invention, the connecting and mating mechanism extends along an axial direction perpendicular to the crowbar body; the abutting mechanism is perpendicular to both the connecting and mating mechanism and the crowbar body.

[0017] The features and advantages of this utility model pry bar are:

[0018] The pry bar body is used to insert into the gap between the tire bead and the rim. Its sidewall forms a fulcrum when it contacts the outer edge of the rim, and serves as a connection point. The abutment unit is set on the sidewall of the pry bar body. After the pry bar body is inserted into the gap, it contacts one end face of the rim and serves as another connection point. Compared with the existing technology which only has one connection point, the pry bar of this utility model has two connection points. The newly introduced connection points can not only share the pressure when the pry bar body contacts the outer edge of the rim, reducing the possibility of damaging the outer edge of the rim, but also make the sidewall of the pry bar less likely to slip on the edge of the rim, making it more stable when prying the tire. That is, by using the contact between the abutment unit and the end face of the rim to form a stable auxiliary fulcrum, the fulcrum position is fixed through double-point support during the lever application process, thereby improving operational stability and increasing the efficiency of tire prying. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of one embodiment of the crowbar of this utility model;

[0021] Figure 2 This is a perspective view of another embodiment of the crowbar of this utility model;

[0022] Figure 3 This is a side view of another embodiment of the crowbar of this utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of section A in the middle;

[0024] Figure 5 yes Figure 3 Enlarged view of section B in the middle.

[0025] Figure label:

[0026] 1. Crowbar body; 101. First crowbar head; 102. Second crowbar head; 1020. Gap widening section; 11. Connecting structure; 2. Abutting unit; 21. Connecting and mating mechanism; 211. Threaded section; 22. Abutting mechanism; 23. Fastening nut; O. Axial direction of the crowbar body. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no sequential order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "at least one" means one or more, and "multiple" means two or more. The use of the term "may" is intended to indicate that any attribute described that is included in "may" is optional.

[0029] In this embodiment, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0030] like Figures 1 to 5 As shown, the present invention provides a pry bar, including: a pry bar body 1 and abutting unit 2; the abutting unit 2 is disposed on the side wall of the pry bar body 1. When the pry bar body 1 is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body 1 abuts against the outer edge of the rim, the abutting unit 2 is used to abut against one end face of the rim.

[0031] In practical implementation, the pry bar body 1 is used to insert into the gap between the tire bead and the rim. Its sidewall forms a fulcrum when it contacts the outer edge of the rim and serves as a connection point. The abutment unit 2 is set on the sidewall of the pry bar body 1. After the pry bar body 1 is inserted into the gap, it contacts one end face of the rim and serves as another connection point. Compared with the existing technology which only has one connection point, the pry bar of this utility model has two connection points. The newly introduced connection points can not only share the pressure when the pry bar body 1 contacts the outer edge of the rim, reducing the possibility of damaging the outer edge of the rim, but also make the sidewall of the pry bar less likely to slip on the edge of the rim, making it more stable when prying the tire. That is, by using the contact between the abutment unit 2 and the end face of the rim to form a stable auxiliary fulcrum, the fulcrum position is fixed through double-point support during the lever application process, thereby improving the operational stability and increasing the efficiency of tire prying.

[0032] In this embodiment, the crowbar body 1 can be based on existing technology; for example, it can be a crowbar. The abutment unit 2 can be cylindrical.

[0033] According to one embodiment of the present invention, the abutment unit 2 has an arc-shaped abutment surface. When the pry bar body 1 is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body 1 abuts against the outer edge of the rim, the arc-shaped abutment surface is used to abut against one end face of the rim.

[0034] In practice, the surface of the arc-shaped contact surface is smooth, making it less likely to damage the end face of the rim when prying the tire.

[0035] According to one embodiment of the present invention, the side wall of the pry bar body 1 has a plurality of connecting structures 11, the plurality of connecting structures 11 are arranged at intervals O along the axial direction of the pry bar body 1, and the abutment unit 2 is detachably disposed on one of the plurality of connecting structures 11.

[0036] In practice, maintenance personnel can select to connect the abutment unit 2 to the connection structure 11 at different positions according to the tire model. That is, the pry bar has flexibility (adaptability).

[0037] According to one embodiment of the present invention, the connecting structure 11 is a connecting hole, and the abutting unit 2 can be inserted into the connecting hole.

[0038] According to one embodiment of the present invention, the abutting unit 2 includes a connecting and mating mechanism 21 and an abutting mechanism 22; the connecting and mating mechanism 21 is inserted into the connecting hole; the abutting mechanism 22 is connected to the connecting and mating mechanism 21, is perpendicular to the connecting and mating mechanism 21, and has an arc-shaped abutting surface.

[0039] In one feasible embodiment, the connecting hole is a threaded hole, and the connecting and mating mechanism 21 is a screw rod, which is screwed into the threaded hole.

[0040] In practice, the above-mentioned structural design facilitates maintenance personnel in changing the position of the support unit 2.

[0041] In another feasible embodiment, the connecting hole is a through hole, and the connecting and mating mechanism 21 is embedded in the through hole.

[0042] In practice, the above-mentioned structural design improves the efficiency of maintenance personnel in changing the position of the abutment unit 2, eliminating the need to repeatedly screw in and out the screw.

[0043] In another feasible embodiment, the abutment unit 2 further includes a fastening nut 23, which is screwed to the threaded section 211, so that the pry bar body 1 is clamped between the connecting and mating mechanism 21 and the fastening nut 23.

[0044] In practical implementation, compared to the embodiment where the fastening nut 23 is not used for direct screwing, the angle of the abutment mechanism 22 depends on the screwing depth of the connecting and mating mechanism 21. If screwed in too shallowly, the abutment mechanism 22 will be too loose, and the abutment unit 2 will fail. If screwed in too deeply, the angle of the abutment mechanism 22 may not be perpendicular to the pry bar body 1, causing the abutment mechanism 22 to abut against the outer edge of the rim before the side wall of the pry bar body 1 when prying the tire, making it impossible to pry the tire. In summary, the above structural design ensures the stability of the abutment unit 2. In use, the connecting and mating mechanism 21 can be inserted into the connecting structure 11 first, and then the fastening nut 23 can be tightened.

[0045] In this embodiment, the connecting and mating mechanism 21 and the abutting mechanism 22 can be extended along the axial direction O perpendicular to the crowbar body 1; the abutting mechanism 22 is perpendicular to the connecting and mating mechanism 21 and the crowbar body 1 respectively.

[0046] In some embodiments, the pry bar body 1 includes a first end and a second end disposed opposite to each other. The first end has a flat first pry head 101. An abutment unit 2 is disposed on the side wall of the pry bar body 1 and can be disposed close to the first end. When the first pry head 101 is inserted into the gap between the tire bead and the rim, and the side wall of the first pry head 101 abuts against the outer edge of the rim, the abutment unit 2 is used to abut against one end face of the rim. The second end has a flat second pry head 102. The second pry head 102 has a gap increasing portion 1020. The gap increasing portion 1020 has an inclined surface, which is inclined inward along the direction from the second end to the first end.

[0047] In practical implementation, the above-mentioned structural design increases the gap between the tire bead and the rim, facilitating tire prying. In use, the second pry head 102 is first inserted into the gap between the tire bead and the rim. As the second pry head 102 gradually extends further, the gap-enlarging part 1020 gradually extends in, and its inclined surface gradually widens the gap between the tire bead and the rim, making the tire bead and rim more loose. Then, the second pry head 102 is removed, and the pry bar body 1 is rotated. The first pry head 101 is then inserted into the gap between the tire bead and the rim, with the sidewall of the pry bar body 1 abutting against the outer edge of the rim. When the abutment unit 2 abuts against one end face of the rim, the tire can be pryed. This facilitates the repair of tires with an overly tight connection between the tire bead and the rim.

[0048] The above descriptions are merely a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.

Claims

1. A crowbar, characterized in that, include: Crowbar body (1) and abutment unit (2); The crowbar body (1) includes a first end and a second end disposed opposite to each other; the first end has a flat first crowbar (101); the second end has a flat second crowbar (102), the second crowbar (102) has a gap-increasing portion (1020), the gap-increasing portion (1020) has an inclined surface, the inclined surface is inclined inward along the direction from the second end to the first end; The abutting unit (2) is disposed on the side wall of the pry bar body (1) and near the first end. When the pry bar body (1) is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body (1) abuts against the outer edge of the rim, the abutting unit (2) is used to abut against one end face of the rim.

2. The crowbar according to claim 1, characterized in that, The abutting unit (2) has an arc-shaped abutting surface. When the pry bar body (1) is inserted into the gap between the tire bead and the rim, and the side wall of the pry bar body (1) abuts against the outer edge of the rim, the arc-shaped abutting surface is used to abut against one end face of the rim.

3. The crowbar according to claim 2, characterized in that, The pry bar body (1) has multiple connecting structures (11) on its side wall. The multiple connecting structures (11) are arranged at intervals along the axial direction (O) of the pry bar body (1). The abutment unit (2) is detachably disposed on one of the multiple connecting structures (11).

4. The crowbar according to claim 3, characterized in that, The connecting structure (11) is a connecting hole, and the abutting unit (2) can be inserted into the connecting hole.

5. The crowbar according to claim 4, characterized in that, The abutting unit (2) includes a connecting and cooperating mechanism (21) and an abutting mechanism (22); The connecting and mating mechanism (21) passes through the connecting hole; The abutting mechanism (22) is connected to the connecting and mating mechanism (21) and is perpendicular to the connecting and mating mechanism (21), and has the arc-shaped abutting surface.

6. The crowbar according to claim 5, characterized in that, The connecting hole is a screw hole, and the connecting and mating mechanism (21) is a screw rod, which is screwed into the screw hole.

7. The crowbar according to claim 6, characterized in that, The connection hole is a through hole.

8. The crowbar according to claim 7, characterized in that, The connecting and mating mechanism (21) is embedded in the through hole.

9. The crowbar according to claim 7, characterized in that, The free end of the connecting and mating mechanism (21) has a threaded section (211). The abutment unit (2) also includes a fastening nut (23), which is screwed to the threaded section (211), so that the pry bar body (1) is clamped between the connecting and mating mechanism (21) and the fastening nut (23).

10. The crowbar according to any one of claims 5 to 9, characterized in that, The connecting and mating mechanism (21) extends along the axial direction (O) perpendicular to the crowbar body (1); The abutting mechanism (22) is perpendicular to the connecting and mating mechanism (21) and the crowbar body (1).

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