Training wheel apparatus for traction of vehicle

Abstract

The present invention relates to an auxiliary wheel device for vehicle towing that can be easily attached to the lower part of the wheel of a broken or accident vehicle during the vehicle towing process to assist the wheel of the towed vehicle. The vehicle towing auxiliary wheel device of the present invention comprises a front auxiliary wheel; a rear auxiliary wheel; a front auxiliary wheel support frame comprising a front crossbar that rotatably supports the front auxiliary wheel and a front vertical bar extending perpendicularly from the front crossbar, and a rear auxiliary wheel support frame comprising a rear crossbar that rotatably supports the rear auxiliary wheel and a rear vertical bar extending perpendicularly from the rear crossbar, wherein the front vertical bar and the rear vertical bar are slidably coupled while overlapping to allow for adjustment of the spacing between them.

Description

Technology Field

[0001] The present invention relates to an auxiliary wheel device for vehicle towing, and more specifically, to an auxiliary wheel device for vehicle towing that can be easily attached to the lower part of the wheel of a broken or accident vehicle during the vehicle towing process to assist the wheel of the towed vehicle. Background Technology

[0002] Vehicle towing is carried out when there is a need to forcibly move a vehicle to another location due to damage caused by an accident or other reasons that prevent it from moving on its own, or due to illegal parking. In such cases, vehicle towing can be performed by a tow truck equipped with a vehicle towing device.

[0003] Currently, the most common vehicle towing method involves supporting the vehicle's weight using lifting cylinders, cables, hooks, or chains, and then placing a wheel lift under the front or rear wheels of the vehicle to be towed to lift it. However, this towing method is bulky, so it can only be installed on vehicles with sufficient clearance, such as trucks. Furthermore, since the vehicle's weight is supported by cables, chains, or hooks, there is a problem in that the cables or chains may sway during movement, potentially causing damage to the towed vehicle.

[0004] Various prior art technologies to solve or improve the aforementioned problems have been proposed in the following prior art literature.

[0005] However, conventionally, there was a problem in that the auxiliary wheels assisting the wheels of the towed vehicle were mounted on the towing vehicle—that is, operated in a dependent state—so their structure was not only complex but also bulky, and the process of mounting them to the wheels of the towed vehicle was also complicated. Prior art literature

[0006] Prior Art 1: Korean Registered Patent Publication No. 10-1861987 (Title of Invention: Underlift for Towing Vehicle with Detachable Auxiliary Wheels) Prior Art 2: Korean Registered Utility Model Publication No. 20-0475604 (Title of Design: Towing Vehicle Equipped with Auxiliary Wheels) Prior Art 3: Korean Registered Utility Model Publication No. 20-0470711 (Title of Design: Towing Car Equipped with Auxiliary Wheels) The problem to be solved

[0007] The present invention has been devised to solve the aforementioned problems and aims to provide an auxiliary wheel device for vehicle towing that can be easily attached to the lower part of the wheel of a broken or accident vehicle during the towing process to assist the wheel of the towed vehicle. means of solving the problem

[0008] The vehicle towing auxiliary wheel device of the present invention for achieving the aforementioned purpose comprises: a front auxiliary wheel; a rear auxiliary wheel; a front auxiliary wheel support frame comprising a front crossbar that rotatably supports the front auxiliary wheel and a front vertical bar extending perpendicularly from the front crossbar, and a rear auxiliary wheel support frame comprising a rear crossbar that rotatably supports the rear auxiliary wheel and a rear vertical bar extending perpendicularly from the rear crossbar, wherein the front vertical bar and the rear vertical bar are slidably coupled while overlapping to allow for adjustment of the spacing between them.

[0009] In the aforementioned configuration, the front wheel and the rear wheel are made of synthetic rubber material and are formed with a plurality of convex and concave portions spaced apart and parallel in the circumferential direction.

[0010] Each crossbar has a wheel contact surface formed thereon that contacts the wheels of the towed vehicle, and the wheel contact surface is formed at an angle with multiple holes formed therein.

[0011] In one vertical bar of the front auxiliary wheel support frame and the rear auxiliary wheel support frame, a plurality of support frame spacing forming holes are formed side by side at intervals, and in the other vertical bar, a fixing hole is formed that is vertically aligned with one of the support frame spacing forming holes, and a support frame fixing pin is inserted into the fixing hole aligned vertically with the support frame spacing forming hole to secure it.

[0012] The front auxiliary wheel support frame is provided with a front auxiliary wheel connecting member that connects the rotation axis of the front auxiliary wheel to the front crossbar, and the front auxiliary wheel connecting member is integrally coupled with a front lever insertion port into which a switching lever for switching the front auxiliary wheel between a loaded state and an unloaded state is inserted, and the rear auxiliary wheel support frame is provided with a rear auxiliary wheel connecting member that connects the rotation axis of the rear auxiliary wheel to the rear crossbar, and the rear auxiliary wheel connecting member is integrally coupled with a rear lever insertion port into which a switching lever for switching the rear auxiliary wheel between a loaded state and an unloaded state is inserted.

[0013] It is equipped with a front auxiliary wheel fixing lever and a rear auxiliary wheel fixing lever to fix the front auxiliary wheel and the rear auxiliary wheel, respectively, in a loaded state. Effects of the invention

[0014] According to the auxiliary wheel device for vehicle towing of the present invention, it can assist the wheels of a towed vehicle by easily and simply attaching to the wheels of the towed vehicle while remaining independent of the towing vehicle and having a small volume. Brief explanation of the drawing

[0015] FIG. 1 is a perspective view of an auxiliary wheel device for vehicle towing according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of the auxiliary wheel device for vehicle towing shown in FIG. 1. Figure 3 is a cross-sectional view along line AA in Figure 1. Figure 4 is a cross-sectional view along line BB in Figure 1. FIG. 5 is a perspective view of the auxiliary wheel device for vehicle towing illustrated in FIG. 1 before operation. FIG. 6 is a perspective view after operation of the auxiliary wheel device for vehicle towing shown in FIG. 1. Specific details for implementing the invention

[0016] Hereinafter, a preferred embodiment of the auxiliary wheel device for vehicle towing according to the present invention is described in detail with reference to the attached drawings. Here, the same reference numerals are used for identical components, and repetitive descriptions and detailed descriptions of known functions and components that could unnecessarily obscure the essence of the invention are omitted. Embodiments of the invention are provided to more fully explain the invention to those with average knowledge in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

[0017] Throughout the specification, when a configuration is described as being "connected" to another configuration, this includes not only cases where they are "directly connected" but also cases where they are "connected with another configuration in between." Furthermore, when a configuration is described as "including" another configuration, this means that, unless specifically stated otherwise, it does not exclude other configurations but may include additional configurations.

[0018] FIG. 1 is a perspective view of an auxiliary wheel device for towing a vehicle according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the auxiliary wheel device for towing a vehicle shown in FIG. 1. FIG. 3 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB in FIG. 1. FIG. 5 is a perspective view of the auxiliary wheel device for towing a vehicle shown in FIG. 1 before operation, and FIG. 6 is a perspective view of the auxiliary wheel device for towing a vehicle shown in FIG. 1 after operation.

[0019] As illustrated in FIGS. 1 to 6, the vehicle towing auxiliary wheel device of the present invention is largely formed by combining a front auxiliary wheel support frame (110) that rotatably supports a front auxiliary wheel (hereinafter referred to as a 'front auxiliary wheel' to distinguish it from the wheel of the towed vehicle, and a rear auxiliary wheel referred to as a 'rear auxiliary wheel' in the same sense) (160) and a rear auxiliary wheel support frame (210) that rotatably supports a rear auxiliary wheel (260), so that the spacing can be adjusted to match the wheel size (diameter) of the towed vehicle.

[0020] In the above configuration, the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (210) are made of metal, preferably steel, and may each be composed of a crossbar (111, 211) that supports the front auxiliary wheel (160) and the rear auxiliary wheel (260) so as to be rotatable, and a vertical bar (112, 212) that extends perpendicularly from the crossbar (111, 211) and slides together in an overlapping manner to adjust the distance between the front auxiliary wheel (160) and the rear auxiliary wheel (260).

[0021] The front wheel (160) and the rear wheel (260) may be made of a synthetic rubber material identical to the tire material of the vehicle, for example, and may be made of the same size and shape. On these front wheel (160) and rear wheel (260), a plurality of convex portions (162, 262) and concave portions (164, 264) may be formed side by side at intervals.

[0022] Each crossbar (111, 211) has a vehicle wheel contact surface (111a) formed thereon that contacts the wheel of the towed vehicle. This vehicle wheel contact surface (111a) is formed at an angle to maximize the contact area with the vehicle wheel, and furthermore, a plurality of holes (111aa) are formed in the vehicle wheel contact surface (111a) to maximize the contact force with the vehicle wheel.

[0023] Among the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (210), a plurality of support frame spacing forming holes (112a) are formed in a spaced-apart manner on one vertical bar (in this embodiment, the front vertical bar) (112), and a fixing hole is formed on the other vertical bar (212) that is vertically aligned with one of the support frame spacing forming holes (112a). In the above configuration, the operator adjusts the spacing between the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (210) to match the wheel size of the towed vehicle, and then inserts a support frame fixing pin (300) into the fixing hole aligned vertically with the support frame spacing forming hole (112a) so that the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (210) are firmly joined.

[0024] Meanwhile, the front auxiliary wheel support frame (110) is provided with a front auxiliary wheel connecting member (150) that connects the rotation axis of the front auxiliary wheel (160) and the front crossbar (111). This front auxiliary wheel connecting member (150) is integrally connected to a front lever insertion opening (130) into which a switching lever (LV) is inserted to switch the front auxiliary wheel (160) to a loaded state, i.e., a state in which the wheel of the towed vehicle is lifted, and to a non-loaded state, for example, by welding.

[0025] Reference number 120 represents a front wheel pivot axis that supports the front auxiliary wheel (160) and the front auxiliary wheel connecting member (150) to pivot, that is, to switch between a loaded state and an unloaded state.

[0026] Next, the rear auxiliary wheel support frame (210) is also provided with a rear auxiliary wheel connecting member (250) that connects the rotation axis (270) of the rear auxiliary wheel (260) and the rear crossbar (211). This rear auxiliary wheel connecting member (250) is integrally connected to a rear lever insertion opening (230) into which a switching lever (LV) is inserted to switch the rear auxiliary wheel (260) to a loaded state, i.e., a state in which the wheel of the towed vehicle is lifted, and to a non-loaded state, for example, by welding.

[0027] Reference numeral 220 represents a rear auxiliary wheel pivot axis that supports the rear auxiliary wheel (260) and the rear auxiliary wheel connecting member (250) to pivot, i.e., to switch between a loaded state and an unloaded state. Reference numerals 140 and 240 represent a front auxiliary wheel fixing lever and a rear auxiliary wheel fixing lever, respectively, for fixing the front auxiliary wheel (160) and the rear auxiliary wheel (260) in a loaded state, and reference numeral 242 represents a spring for maintaining the front auxiliary wheel fixing lever (240) in a constantly retracted state (likely installed in the rear auxiliary wheel fixing lever as well).

[0028] In the above configuration, the operator can prevent the front auxiliary wheel (160) and the rear auxiliary wheel (260) from switching from an unloaded state to a loaded state by using the switching lever (LV) to switch the front auxiliary wheel (160) and the rear auxiliary wheel (260) to a loaded state, and then pulling the front auxiliary wheel fixing lever (140) and the rear auxiliary wheel fixing lever (240) and placing them across the lower part of the front lever insertion opening (1130) and the rear lever insertion opening (230), respectively.

[0029] The operation of the auxiliary wheel device for vehicle towing according to the present invention will be described in detail below.

[0030] First, as shown in FIG. 5, the operator slides the vertical members (112, 212) of the front auxiliary wheel support frame (1110) and the rear auxiliary wheel support frame (210) so that the gap between the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (2110) is aligned with the wheel size of the towed vehicle, and then inserts the support frame fixing pin (300) to fix it.

[0031] In this state, with the long metal rod-shaped switching lever (LV) inserted into the front lever insertion port (130), force is applied in a counterclockwise direction to switch the front auxiliary wheel (160) to a loaded state, that is, as shown in FIG. 6, the front auxiliary wheel (160) is pivoted around the front auxiliary wheel pivot axis (120) to switch to a folded state. Afterwards, the front auxiliary wheel fixing lever (140) is pulled and placed over the front lever insertion port (130) to prevent the front auxiliary wheel (160) from switching to an unloaded state.

[0032] In the same way, with the switching lever (LV) inserted into the rear lever insertion port (230), force is applied clockwise to switch the rear auxiliary wheel (260) to a loaded state, that is, as shown in FIG. 6, the rear auxiliary wheel (260) is pivoted around the rear auxiliary wheel pivot axis (220) to switch it to a folded state. Afterwards, the rear auxiliary wheel fixing lever (240) is pulled and placed over the rear lever insertion port (230) to prevent the rear auxiliary wheel (260) from switching to an unloaded state.

[0033] And in this state, the wheels of the towed vehicle are lifted off the ground by the front auxiliary wheel (160) and the rear auxiliary wheel (260), and as the towed vehicle moves forward, the front auxiliary wheel (160) and the rear auxiliary wheel (260) roll in place of the wheels of the towed vehicle, thereby moving the towed vehicle.

[0034] Although preferred embodiments of the auxiliary wheel device for vehicle towing according to the present invention have been described in detail above, the present invention is not limited to the aforementioned embodiments and may be implemented with various modifications within the scope permitted by the technical concept of the present invention. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims. Explanation of the symbols

[0035] 110: Front auxiliary wheel support frame, 111: Front crossbar, 111a: Vehicle wheel contact surface, 111aa: Vehicle wheel contact hole, 112: Front vertical bar, 112a: Support frame spacing forming hole, 120: Front auxiliary wheel pivot axis, 130: Front lever insertion slot, 140: Front auxiliary wheel locking lever, 150: Front auxiliary wheel connecting member, 160: Front auxiliary wheel, 162, 262: Iron part, 164, 264: Recess, 210: Rear auxiliary wheel support frame, 211: Rear crossbar, 212: Rear vertical bar, 220: Rear auxiliary wheel pivot axis, 230: Rear lever insertion slot, 240: Rear auxiliary wheel locking lever, 242: Spring, 250: Rear auxiliary wheel connecting member, 260: Rear assist wheel, 270: Rear assist wheel pivot point, 300: Support frame fixing pin

Claims

Claim 1 The front auxiliary wheel (160); the rear auxiliary wheel (260); the front auxiliary wheel support frame (110) comprising a front crossbar (111) that rotatably supports the front auxiliary wheel (160) and a front vertical bar (112) that extends perpendicularly from the front crossbar (111); and the rear auxiliary wheel support frame (210) comprising a rear crossbar (211) that rotatably supports the rear auxiliary wheel (260) and a rear vertical bar (212) that extends perpendicularly from the rear crossbar (211), wherein the front vertical bar (112) and the rear vertical bar (212) are slidably coupled while overlapping so as to adjust the spacing, and the front auxiliary wheel support frame (110) is provided with a front auxiliary wheel connecting member (150) that connects the rotation axis of the front auxiliary wheel (160) and the front crossbar (111), and the front auxiliary wheel connecting member (150) is configured to allow the front auxiliary wheel (160) to be in a loaded state and an unloaded state. A vehicle towing auxiliary wheel device is integrally coupled with a front lever insertion opening (130) into which a switching lever (LV) for switching is inserted, and a rear auxiliary wheel connecting member (250) is provided in the rear auxiliary wheel support frame (210) to connect the rotation axis of the rear auxiliary wheel (260) and the rear crossbar (211), and the rear auxiliary wheel connecting member (250) is integrally coupled with a rear lever insertion opening (230) into which a switching lever (LV) for switching the rear auxiliary wheel (260) to a loaded state and an unloaded state is inserted. Claim 2 An auxiliary wheel device for towing a vehicle according to claim 1, wherein the front wheel (160) and the rear wheel (260) are made of synthetic rubber material and a plurality of convex portions (162, 262) and concave portions (164, 264) are formed side by side at intervals in the circumferential direction. Claim 3 An auxiliary wheel device for towing a vehicle, wherein, in claim 2, each crossbar (111, 211) has a vehicle wheel contact surface (111a) formed thereon that contacts the wheel of the towed vehicle, and the vehicle wheel contact surface (111a) is formed at an angle with a plurality of holes formed therein. Claim 4 An auxiliary wheel device for towing a vehicle according to claim 3, wherein a plurality of support frame spacing forming holes are formed in a spaced-apart manner on one side of the front auxiliary wheel support frame (110) and the rear auxiliary wheel support frame (210), and a fixing hole is formed in the other side of the support frame spacing forming holes that is aligned vertically with one of the support frame spacing forming holes, and a support frame fixing pin (300) is inserted and fixed into the fixing hole aligned vertically with the support frame spacing forming hole (112a). Claim 5 delete Claim 6 An auxiliary wheel device for vehicle towing according to claim 1, characterized by having a front auxiliary wheel fixing lever (140) and a rear auxiliary wheel fixing lever (240) for fixing the front auxiliary wheel (160) and the rear auxiliary wheel (260) respectively in a loaded state.

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