Tire mounting head

Abstract

The application discloses a tire mounting head, which comprises a first roller, a second roller, a connecting part and a butt joint part; the butt joint part comprises a connecting rod and a straight column; one end of the connecting part is sleeved with the first roller; the other end of the connecting part is connected with one end of the connecting rod; the other end of the connecting rod is connected with the straight column; the second roller is sleeved on the connecting rod; the first roller and the second roller are arranged axially perpendicular to each other; when the first roller is abutted against the tire side of a tire, the second roller is abutted against the rim of a wheel, and the straight column is inserted between the tire lip of the tire and the rim of the wheel. When a tire is mounted, damage to the wheel is effectively avoided, and the maintenance cost is reduced; meanwhile, the tire mounting head is in rolling contact with the wheel, the resistance is reduced, and the efficiency of mounting the tire is improved.

Description

Technical Field

[0001] This invention relates to the field of tire mounting, and more particularly to a tire mounting head. Background Technology

[0002] Car tires are made of rubber and are easily damaged during driving, requiring replacement or repair. Since the rim and tire are not easily separated, tire removal and installation devices are usually used to assist in tire removal and installation when replacing or repairing car tires. When installing a tire, the tire bead is pressed down into the groove of the rim to complete the installation.

[0003] In existing technologies, when using tire mounting tools to connect tires to rims, the tire mounting head will rub against the tire and rim. Since the tire mounting head is made of metal, the friction will wear down the wheel and cause damage. Therefore, a tire mounting tool is needed to accurately install tires without damaging them. Summary of the Invention

[0004] This invention provides a tire mounting head to overcome the problem that hard friction between the tire mounting head and the wheel during the tire mounting process can easily cause wheel damage.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A tire head assembly includes a first roller, a second roller, a connecting part, and a mating part;

[0007] The docking part includes a connecting rod and a straight column. One end of the connecting part is fitted with the first roller, and the other end of the connecting part is connected to one end of the connecting rod. The other end of the connecting rod is connected to the straight column. The connecting rod is fitted with the second roller. The first roller and the second roller are axially perpendicular.

[0008] When the first roller comes into contact with the tire sidewall, the second roller comes into contact with the wheel rim, and the straight rod extends between the tire bead and the wheel rim.

[0009] Furthermore, the docking part also includes a pressure block, the end face of which is an arc surface. The pressure block is disposed on one side of the straight column and connected to the connecting rod. When the first roller abuts against the tire sidewall, the pressure block abuts against the tire bead.

[0010] Furthermore, it also includes a cross arm, the connecting part is connected to the tire changer via the cross arm, the end of the cross arm is provided with an external thread, the end of the connecting part that is fitted with the first roller is provided with a threaded hole, and the connecting part and the cross arm are connected by threads;

[0011] The connecting part has a through hole at the end away from the first roller. The axis of the through hole is perpendicular to the axis of the threaded hole. The connecting rod includes a threaded section and a smooth section. The smooth section is fitted with the second roller. The threaded section passes through the through hole and is fixedly connected to the connecting part by a nut. The diameter of the smooth section is larger than the diameter of the through hole.

[0012] Furthermore, a gasket is provided on the end face of the straight column away from the pressure block.

[0013] Furthermore, the cross arm is a prism shaft, the outer wall of the prism shaft is provided with scale lines, the prism shaft is fitted with a fixing part, the fixing part is fixed to the prism shaft by bolts, the outer wall of the connecting part fitted with the first roller is provided with a stop part, and the first roller is disposed between the fixing part and the stop part.

[0014] Furthermore, the docking part also includes a retaining part, one end of the connecting rod is provided with the retaining part, the diameter of the retaining part is larger than the diameter of the connecting rod, and the retaining part is provided with the straight column and the pressure block.

[0015] Furthermore, the second roller has a receiving cavity at one end near the holding part, and the holding part is disposed in the receiving cavity.

[0016] Furthermore, the pressure block is welded to the end of the connecting rod, or connected to the connecting rod by threads.

[0017] Beneficial effects: By setting up a first roller, a second roller, and a docking part, the present invention ensures that during the tire installation process, the first roller contacts the tire sidewall, the second roller contacts the rim, and the docking part contacts the tire bead. This provides corresponding protection devices for the contact parts between the tire mounting head and the wheel, effectively preventing damage to the wheel and reducing maintenance costs. At the same time, the rolling contact between the tire mounting head and the wheel reduces resistance and improves the efficiency of tire installation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional schematic diagram of a tire head assembly according to the present invention;

[0020] Figure 2 This is a front view of a tire head assembly according to the present invention;

[0021] Figure 3 for Figure 2 Sectional view at point AA;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the docking part in this invention.

[0024] In the figure: 1. First roller; 2. Second roller; 3. Connecting part; 31. Stop part; 4. Connecting part; 41. Connecting rod; 42. Straight column; 421. Gasket; 43. Pressure block; 44. Holding part; 5. Cross arm; 6. Fixing part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0026] This embodiment provides a tire head assembly, such as... Figures 1 to 5 As shown, it includes a first roller 1, a second roller 2, a connecting part 3, and a docking part 4;

[0027] The docking part 4 includes a connecting rod 41 and a straight column 42. One end of the connecting part 3 is fitted with the first roller 1, and the other end of the connecting part 3 is connected to one end of the connecting rod 41. The other end of the connecting rod 41 is connected to the straight column 42. The connecting rod 41 is fitted with the second roller 2. The first roller 1 and the second roller 2 are axially perpendicular. When the first roller 1 abuts against the tire sidewall, the second roller 2 abuts against the wheel rim. The straight column 42 extends between the tire bead and the wheel rim.

[0028] Specifically, such as Figure 1As shown, the tire mounting head includes a first roller 1, which abuts against the tire sidewall during tire mounting. When the tire rotates with the work turntable, the position of the tire mounting head remains fixed, and the first roller 1 rolls against the tire sidewall, reducing the frictional resistance between the tire mounting head and the tire sidewall and preventing wear on the tire sidewall. The tire mounting head also includes a second roller 2, which abuts against the wheel rim. In the prior art, the connecting rod 41 directly contacts the wheel rim. Since both the connecting rod 41 and the wheel rim are made of metal, mutual friction during rotation can easily cause wear on the wheel rim, and the connecting rod 41 may wear and break. Therefore, a second roller 2 is sleeved on the connecting rod 41, which rolls against the second roller 2 when the wheel rim rotates, preventing damage to the wheel rim. The connecting rod 41 is connected to a straight column 42, which extends between the tire bead and the wheel rim, so that the tire bead and the wheel rim correspond to complete the tire mounting work.

[0029] The docking part 4 also includes a pressure block 43. The end face of the pressure block 43 is an arc surface. The pressure block 43 is disposed on one side of the straight column 42 and connected to the connecting rod 41. When the first roller 1 abuts against the tire sidewall, the pressure block 43 abuts against the tire bead.

[0030] Specifically, a pressure block 43 is provided at the end of the connecting rod 41. The pressure block 43 has an arc surface, and the arc surface abuts against the tire sidewall to prevent wear on the tire sidewall during tire rotation.

[0031] It also includes a cross arm 5. The connecting part 3 is connected to the tire changer via the cross arm 5. The end of the cross arm 5 is provided with an external thread. The end of the connecting part 3 that is fitted with the first roller 1 has a threaded hole. The connecting part 3 and the cross arm 5 are connected by threads. The end of the connecting part 3 away from the first roller 1 has a through hole. The axis of the through hole is perpendicular to the axis of the threaded hole. The connecting rod 41 includes a threaded section and a smooth section. The smooth section is fitted with the second roller 2. The threaded section passes through the through hole and is fixedly connected to the connecting part 3 by a nut. The diameter of the smooth section is larger than the diameter of the through hole. Specifically, the end of the connecting part 3 near the first roller 1 is connected to the cross arm 5 by a threaded engagement, so that the tire head is connected to the tire changer. The end of the connecting part near the second roller 2 has a through hole. The connecting rod is as follows: Figure 5The device includes two sections: a threaded section and a smooth section. The diameter of the threaded section matches the diameter of the through hole and can pass through it. The diameter of the smooth section is larger than the diameter of the through hole. The mating part 4 is fixed by the cooperation of the nut, the threaded section, and the smooth section. The connecting part 4 connects the first roller 1, which is coaxial with the cross arm 5, and the second roller 2, which is perpendicular to the axis of the cross arm 5, into a whole, ensuring that the relative positions of each component work together to complete the tire mounting work. According to the positional relationship between the tire and the rim, in order to ensure that the second roller 2 can be accurately positioned on the rim when the first roller 1 abuts against the tire sidewall, the bottom surfaces of the first roller 1 and the second roller 2 need to be kept at the same horizontal height to prevent the bottom surface of the first roller 1 from exceeding the bottom surface of the second roller 2, which would cause the second roller 2 to be unable to be positioned on the rim after the first roller 1 is positioned.

[0032] The end face of the straight post 42 away from the pressure block 43 is provided with a gasket 421. Specifically, when installing the tire, the straight post 42 contacts the wheel rim, and the gasket 421 is provided on the end face of the straight post 42. In this embodiment, the gasket 421 is made of rubber. The contact between the gasket 421 and the wheel rim can prevent the straight post 42 from wearing the wheel rim.

[0033] The cross arm 5 is a prism shaft, and the outer wall of the prism shaft is provided with scale lines. A fixing part 6 is sleeved on the prism shaft, and the fixing part 6 is fixed to the prism shaft by bolts. A stop part 31 is provided on the outer wall of one end of the connecting part 3 where the first roller 1 is sleeved. The first roller 1 is positioned between the fixing part 6 and the stop part 31. Specifically, as shown... Figure 1 and Figure 2 As shown, the tire mounting head is connected to the tire changer via a prism shaft. The prism shaft structure prevents the tire mounting head from rotating circumferentially, keeping it stable. The end of the prism shaft is threaded and fixedly connected to the connecting part 3. The outer wall of the prism shaft is marked with scale lines. When changing to different tire models, the prism shaft is stretched to the corresponding scale position to match the tire mounting head with the tire, saving adjustment time. The first roller 1 is mounted on the prism shaft. To prevent the first roller 1 from moving axially on the cross arm 5, a fixing part 6 is provided on one side of the first roller 1. The fixing part 6 is sleeved on the cross arm 5. The fixing part 6 has a radially threaded hole. Tightening the bolt in the threaded hole of the fixing part 141 causes the bolt to abut against and press against the outer surface of the cross arm 5, thereby fixing the fixing part 6 on the cross arm 5. A stop part 31 is provided on the other side of the first roller 1. The stop part 31 is located on the outer wall of the connecting part 3, ensuring that the position of the first roller 1 is limited between the fixing part 6 and the stop part 31 when it can rotate. In this embodiment, preferably, since hexagonal prisms have good compressive strength, the prism axis is a regular hexagonal prism.

[0034] The docking part 4 also includes a supporting part 44. One end of the connecting rod 41 is provided with the supporting part 44. The diameter of the supporting part 44 is larger than the diameter of the connecting rod 41. The supporting part 44 is provided with the straight column 42 and the pressure block 43. Specifically, the supporting part 44 is provided between the straight column 42, the pressure block 43 and the connecting rod 41. In this embodiment, the supporting part is a cylinder. The setting of the supporting part 44 increases the stability of the connection between the straight column 42, the pressure block 43 and the connecting rod 41, and prevents breakage when installing the tire.

[0035] A receiving cavity is provided at one end near the holding part 44, and the holding part 44 is disposed in the receiving cavity. Specifically, the connecting rod 41 is provided with the holding part 44. Friction easily occurs between the holding part 44 and the wheel rim. Therefore, in order to avoid wear, a receiving cavity matching the shape of the holding part 44 is provided in the second roller 2. The holding part 44 is placed in the receiving cavity, while the straight column 42 and the pressure block 43 are placed outside the receiving cavity, so as not to hinder the tire mounting work and to avoid tire wear.

[0036] The pressure block 43 is welded to the end of the connecting rod 41, or connected to the connecting rod 41 by threads. Specifically, as shown... Figure 5 As shown, the pressure block 43 and the connecting rod 41 can be connected by welding them together, or a threaded hole can be provided at the end of the pressure block 43, and the connecting rod 41 can be provided with a corresponding external thread, so that the pressure block 43 and the connecting rod 41 are fixedly connected by threads. In this embodiment, preferably, the pressure block 43 and the connecting rod 41 are integrally welded structures.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tire head assembly, characterized in that, It includes a first roller (1), a second roller (2), a connecting part (3), and a docking part (4); The docking part (4) includes a connecting rod (41) and a straight column (42). One end of the connecting part (3) is fitted with the first roller (1), and the other end of the connecting part (3) is connected to one end of the connecting rod (41). The other end of the connecting rod (41) is connected to the straight column (42). The second roller (2) is fitted on the connecting rod (41). The first roller (1) and the second roller (2) are axially perpendicular. The docking part (4) also includes a pressure block (43), the end face of the pressure block (43) is an arc surface, the pressure block (43) is disposed on one side of the straight column (42) and connected to the connecting rod (41), when the first roller (1) abuts against the tire sidewall, the pressure block (43) abuts against the tire bead; It also includes a cross arm (5), the connecting part (3) is connected to the tire changer through the cross arm (5), the end of the cross arm (5) is provided with an external thread, the end of the connecting part (3) on which the first roller (1) is sleeved is provided with a threaded hole, and the connecting part (3) and the cross arm (5) are connected by threads. The connecting part (3) has a through hole at one end away from the first roller (1). The axis of the through hole is perpendicular to the axis of the threaded hole. The connecting rod (41) includes a threaded section and a smooth section. The smooth section is fitted with the second roller (2). The threaded section passes through the through hole and is fixedly connected to the connecting part (3) by a nut. The diameter of the smooth section is larger than the diameter of the through hole. When the first roller (1) abuts against the sidewall of the tire, the second roller (2) abuts against the rim of the wheel, and the straight column (42) extends between the tire bead and the rim of the wheel.

2. The tire head assembly according to claim 1, characterized in that, The end face of the straight column (42) away from the pressure block (43) is provided with a gasket (421).

3. A tire head assembly according to claim 1, characterized in that, The cross arm (5) is a prism shaft. The outer wall of the prism shaft is provided with scale lines. The prism shaft is fitted with a fixing part (6). The fixing part (6) is fixed to the prism shaft by bolts. The connecting part (3) is fitted with a stop part (31) on the outer wall of one end of the first roller (1). The first roller (1) is located between the fixing part (6) and the stop part (31).

4. A tire head assembly according to claim 1, characterized in that, The docking part (4) also includes a holding part (44), one end of the connecting rod (41) is provided with the holding part (44), the diameter of the holding part (44) is larger than the diameter of the connecting rod (41), and the holding part (44) is provided with the straight column (42) and the pressure block (43).

5. A tire head assembly according to claim 4, characterized in that, The second roller (2) has a receiving cavity at one end near the holding part (44), and the holding part (44) is located in the receiving cavity.

6. A tire head assembly according to claim 1, characterized in that, The pressure block (43) is welded to the end of the connecting rod (41) or connected to the connecting rod (41) by threads.

Images