Chain tensioning wheel of all terrain vehicle

Abstract

The chain tensioning wheel of the all terrain vehicle comprises a swing piece, a torsion spring and a tensioning wheel, the two ends of the swing piece are respectively provided with a hinge portion and a connecting column, the swing piece is hinged to a vehicle frame main body through the hinge portion, the connecting column is sleeved with the tensioning wheel, the torsion spring is arranged on the swing piece in a sleeved mode, and two torsion arms of the torsion spring abut against the swing piece and the vehicle frame main body respectively. A chain contact surface and a chain limiting part are arranged on the tensioning wheel; the cylindrical wheel does not need to be aligned with the chain and clamping teeth, and the tightness of the chain can be kept stable under the action of the elastic force of the torsional spring in a large-vibration environment; and due to the open design, the chain is convenient to disassemble and assemble during replacement and maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sand buggies, in particular to a chain tension wheel of a sand buggy. BACKGROUND

[0002] The sand buggy is more and more welcomed by people because it is not affected by the terrain environment, and the main transmission mode of the sand buggy is chain transmission. When the vehicle runs in a poor road condition place, the tightness of the chain will change due to the influence of shaking, which affects the power transmission of the vehicle, and even chain drop may occur. The chain tension wheel of the current sand buggy generally adopts a roller with a tooth opening and a chain engagement, and an enclosing structure is provided outside to prevent chain drop. The production cost of this type of chain tension wheel is relatively high, and it is inconvenient to disassemble and maintain after failure. SUMMARY

[0003] In view of the defects of the existing chain tension wheel of the sand buggy, the technical problem to be solved by the utility model is to provide a chain tension wheel of a sand buggy, which has the advantages of simple structure, low production cost, stable chain tightness, and convenient chain disassembly and replacement and maintenance.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, the utility model is realized through the following technical measures: a chain tension wheel of a sand buggy, comprising a swing piece, a torsional spring, and a tension wheel, the swing piece is provided with a hinge part and a connecting column at both ends respectively, the swing piece is hinged to the main body of the vehicle frame through the hinge part, the connecting column is provided with the tension wheel, the torsional spring is sleeved on the swing piece, the two torsional arms of the torsional spring are respectively abutted on the swing piece and the main body of the vehicle frame, and the tension wheel is provided with a chain contact surface and a chain limiting part.

[0005] Further, the hinge part is provided with a hinge column, the hinge column is provided with a center hole, and the torsional spring is sleeved on the hinge column.

[0006] Further, the tension wheel is provided with a center hole, the center hole of the tension wheel is provided with limiting surfaces at both ends, one end of the connecting column is provided with a limiting part, the other end is provided with a thread, the thread is provided with a nut, and the distance from the limiting part to the thread is greater than the distance between the two limiting surfaces of the tension wheel.

[0007] Further, the center hole of the tension wheel is provided with an annular groove.

[0008] Compared with the prior art, the chain tension wheel of the sand buggy has the advantages of simple structure, low production cost, stable chain tightness, and convenient chain disassembly and replacement and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0009] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and serve to explain the principles of the present application. The drawings are not to scale. In the drawings:

[0010] Fig. 1 A structure schematic view of a chain tensioner wheel of a sand buggy according to the present application;

[0011] Fig. 2 A sectional view of a chain tensioner wheel of a sand buggy according to the present application;

[0012] Fig. 3 An installation schematic view of a chain tensioner wheel of a sand buggy according to the present application.

[0013] BRIEF DESCRIPTION OF DRAWINGS 1, swing piece; 2, torsional spring; 3, tensioner wheel; 4, hinged part; 5, connecting column; 6, hinged column; 7, limiting part; 8, nut; 9, chain contact surface; 10, chain limiting part; 11, limiting surface; 12, annular groove; 13, frame main body. DETAILED DESCRIPTION

[0014] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0016] Please refer to Figs. 1-3The chain tensioner of the sand vehicle provided by the embodiment comprises a swing piece 1, a torsion spring 2 and a tensioner 3. The swing piece 1 is provided with a hinged part 4 and a connecting column 5 at two ends respectively. The hinged part 4 is provided with a hinged column 6, and the hinged column 6 is provided with a center hole. The swing piece 1 and a vehicle frame main body 13 are hinged through the center hole of the hinged column 6. The connecting column 5 is provided with a limiting part 7 at the tail, and the connecting column 5 is provided with a screw thread at the top end. The screw thread is provided with a nut 8. The torsion spring 2 is sleeved on the hinged column 6 of the swing piece 1, and the two torsion arms of the torsion spring 2 are respectively arranged on the swing piece 1 main body and the vehicle frame main body 13. The tensioner 3 is sleeved on the connecting column 5, and the tensioner 3 is provided with a center hole. The center hole of the tensioner 3 is provided with limiting faces 11 at two ends, and is provided with an annular groove 12 inside. The annular groove 12 can reduce the friction surface between the tensioner 3 and the connecting column 5. The tensioner 3 is provided with a chain contact surface 9 at the outer ring. The tensioner 3 is provided with a chain limiting part 10 at the edge, which can prevent the chain from falling off. The distance from the limiting part 7 to the screw thread on the connecting column 5 is slightly larger than the distance between the two limiting faces 11 of the tensioner 3. After the nut 8 is screwed, the rotation of the tensioner 3 is not hindered.

[0017] The chain tensioner of the sand vehicle provided by the embodiment is used. After the center hole of the tensioner 3 is sleeved on the connecting column 5, the nut 8 is screwed into the screw thread of the connecting column 5 to limit the position. The torsion spring 2 is sleeved on the hinged column 6 of the swing piece 1. The swing piece 1 and the vehicle frame main body 13 are hinged through the center hole of the hinged column 6. After being hinged, one of the two torsion arms of the torsion spring 2 is arranged on the swing piece 1 main body, and the other is arranged on the vehicle frame main body 13 (preferably on the rear fork connected with the vehicle frame main body 13). The chain is placed on the chain contact surface 9 of the tensioner 3. Under the action of the elastic force of the torsion spring 2, the swing piece 1 is pushed to move, thereby driving the tensioner 3 to move, so that the chain is taut. When the chain rotates, the tensioner 3 rotates with the chain. When the vehicle shakes greatly, the chain tensioner can keep the chain in a straight state under the action of the elastic force of the torsion spring 2.

[0018] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A chain tensioner for an all terrain vehicle, characterized by: Including swing piece (1), torsion spring (2), tension wheel (3), swing piece (1) both ends are respectively provided with hinged part (4), connecting column (5), swing piece (1) is hinged with car frame main body (13) through hinged part (4), connecting column (5) is provided with tension wheel (3) on the sleeve, torsion spring (2) is sleeved in swing piece (1), and the both torsion arms of torsion spring (2) are respectively rested on swing piece (1) and car frame main body (13), the tension wheel (3) is provided with chain contact surface (9) and chain limiting portion (10) on it.

2. A chain tensioner wheel for an ATV as defined in claim 1, characterized in that: The hinged part (4) is provided with a hinge column (6), and the hinge column (6) is provided with a center hole, and the torsion spring (2) is sleeved on the hinge column (6).

3. A chain tensioner wheel for an ATV according to claim 1 or 2, characterized in that: The tension wheel (3) is provided with a center hole, and the center hole of the tension wheel (3) is provided with a limiting surface (11) at both ends, one end of the connecting column (5) is provided with a limiting portion (7), the other end is provided with a screw thread, the screw thread is provided with a nut (8), and the distance from the limiting portion (7) to the screw thread is greater than the distance between the two limiting surfaces (11) of the tension wheel (3).

4. A chain tensioner wheel for an all terrain vehicle as defined in claim 3, characterized in that: The center hole of the tension wheel (3) is provided with an annular groove (12).

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