Belt tensioner for bicycle

Abstract

The belt tensioner for the bicycle comprises a hook claw and a tensioning block, the tensioning block is connected with the hook claw in a sliding mode, a belt pulley can be tensioned by adjusting the tensioning block to slide on the inner side of the hook claw, the structure is stable, meanwhile, larger difficulty is not brought to disassembly, and maintenance is convenient. The adjusting process is gentle, and the belt cannot be influenced due to rapid change; a plurality of movable sliding blocks are arranged, so that stable connection can be ensured, and the safety coefficient is increased; the adjusting bolt and the sliding bolt are both of a hidden structure and are not prone to loosening due to external influence, and safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle technical field, specifically speaking is a kind of belt tensioner for bicycle. BACKGROUND

[0002] In the use of bicycle, generally need to use chain transmission pedal energy, drive rear wheel rotation, some bicycles on market will use belt drive to replace chain drive, realize the drive of wheel, due to the inherent characteristics of belt, generally all appear belt slack after long-term use, lead to transmission effect is poor. After the appearance belt slack, it is usually necessary to replace belt or tension belt, and the existing technology adopts a variety of tensioning schemes, usually adopts tensioning wheel to be tensioned, but this will additionally increase a set of tensioning wheel, occupy more space. CONTENT OF UTILITY MODEL

[0003] In view of the defects of the existing bicycle belt tensioning mode, the technical problem to be solved by the utility model is to provide a bicycle belt tensioner which does not additionally occupy space, is stable in structure, is convenient to maintain, is gently adjusted, and is not easily affected by external factors.

[0004] In order to achieve the above purpose, according to one aspect of the utility model, the utility model is realized by the following technical measures: a bicycle belt tensioner, comprising two sets of symmetrically arranged claws and tensioning blocks, one side of the claw is provided with a detachable tensioning block, the tensioning block and the claw are slidably connected, a wheel shaft fixing groove and a driving mechanism are arranged on the tensioning block, and the driving mechanism drives the movement of the tensioning block on one side of the claw.

[0005] Further, the bicycle belt tensioner further comprises a limiting mechanism, the limiting mechanism is used for the sliding connection of the tensioning block and the claw, and the movable direction of the tensioning block on the claw is limited.

[0006] Further, the limiting mechanism comprises a movable slot and a movable sliding block, the tensioning block is provided with the movable slot, the claw is provided with a bolt hole, a sliding bolt is arranged in the bolt hole, the sliding bolt is connected with the movable sliding block, the movable sliding block is arranged in the movable slot, and the size of the movable sliding block is matched with the movable slot.

[0007] Further, the movable slot is a stepped slot, comprising a limiting slot and a guide slot, the size of the guide slot is smaller than that of the limiting slot, the guide slot penetrates the tensioning block, and the limiting slot is used for accommodating the movable sliding block.

[0008] Further, the upper and lower edges of the movable sliding block are plane structures, matched with the upper and lower surfaces of the limiting slot, and the relative sliding of the tensioning block on the movable sliding block is limited.

[0009] Further, the driving mechanism comprises an adjusting bolt and an adjusting threaded hole, the adjusting bolt is in threaded connection with the adjusting threaded hole, a nut of the adjusting bolt is arranged on the claw in an axial direction, and the nut of the adjusting bolt is in rotational connection with the claw.

[0010] Further, the claw is provided with a displacement fixing hole, and the nut of the adjusting bolt is arranged in the displacement fixing hole.

[0011] Further, a row of protrusions are arranged at the slot opening of the limiting slot.

[0012] Further, the number of the movable slots is two, the number of bolt holes on the claw corresponds to the number of the movable slots, and the bolt holes are arranged in a staggered manner along the lower half of the claw.

[0013] Further, the outer end of the bolt hole is a counterbore, and after the sliding bolt is installed in place, the nut is arranged in the counterbore of the bolt hole.

[0014] Compared with the prior art, the advantages of the utility model lie in that:

[0015] 1. The belt tensioner can realize the tensioning of the belt pulley by adjusting the sliding of the tensioning block in the claw, and the structure is stable, the disassembly is not difficult, and the maintenance is convenient.

[0016] 2. The adjusting process is smooth, and the belt is not affected by rapid changes.

[0017] 3. A plurality of movable sliding blocks are arranged, the connection is stable, and the safety factor is increased.

[0018] 4. The adjusting bolt and the sliding bolt are in a hidden structure, are not easy to be loosened by external influences, and safety is ensured. DRAWINGS

[0019] The drawings constituting a part of the utility model are used to provide a further understanding of the utility model, the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0020] Figure 1 It is an overall structure schematic view of the belt tensioner for a bicycle.

[0021] Figure 2 It is an overall structure schematic view of the belt tensioner for a bicycle.

[0022] Figure 3 It is a structure schematic view of the tensioning block.

[0023] Figure 4The utility model discloses a part component structure diagram of belt tensioner for bicycle.

[0024] Mark explanation: 1, hook claw;2, tensioning block;3, displacement fixed hole;4, clamping leg;5, adjusting bolt;6, bolt hole;7, sliding bolt;8, adjusting screw hole;9, movable slot;10, limit slot;11, guide slot;12, movable sliding block;13, wheel shaft fixed slot. DETAILED DESCRIPTION

[0025] In the following, the utility model will be described in detail with reference to the drawings and in combination with the 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.

[0026] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0027] Please refer to Figures 1-4 The utility model provides a kind of belt tensioner for bicycle, including hook claw 1, tensioning block 2, adjusting bolt 5, hook claw 1 is V type body and is conveniently fixedly connected with bicycle rear fork, detachable tensioning block 2 is equipped in the inboard of hook claw 1, wheel shaft fixed slot 13 for installing the wheel shaft of bicycle wheel is equipped on tensioning block 2, connect with the both ends of wheel shaft by two wheel shaft fixed slots 13, make wheel shaft realize and be fixed with frame;Displacement fixed hole 3 is equipped on hook claw 1, the nut of adjusting bolt 5 is arranged in displacement fixed hole 3, can hide adjusting bolt 5, and displacement fixed hole 3 is equipped with several limit clamping legs 4, clamping leg 4 is used to limit the displacement of adjusting bolt 5, so design, nut is axially limited, ensure that adjusting bolt 5 is rotated by tool and does not move back and forth;The lower half of hook claw 1 is staggered and set with several bolt holes 6, sliding bolt 7 is equipped in bolt hole 6, the outer end of bolt hole 6 is counterbore, conveniently hide sliding bolt 7, the adjusting bolt 5 of hidden design, sliding bolt 7, it is not easy to be affected by external and loosen, ensure safety.

[0028] Tensioning block 2 is equipped with at least one movable slot 9, and the present embodiment is preferably two and staggered, multiple movable sliding blocks 12, can better satisfy the mechanical requirement of structure, ensure that connection is stable, can increase safety factor and provide double protection.

[0029] Preferably, the movable slot 9 is a stepped slot, the movable slot 9 comprises a limiting slot 10 and a guide slot 11, the guide slot 11 is smaller than the limiting slot 10, the guide slot 11 penetrates the tension block 2, the sliding bolt 7 is threadedly connected with a movable sliding block 12 after penetrating the guide slot 11, the movable sliding block 12 is arranged in the limiting slot 10, the upper and lower edges of the movable sliding block 12 are matched with the upper and lower walls of the limiting slot 10, the limiting slot 10 is used for accommodating the movable sliding block 12 and limiting the shaking of the movable sliding block 12 (avoiding the loosening of the sliding bolt 7 due to the bumping of the vehicle in use, thereby improving the safety effect); a ring of protrusions is arranged at the slot opening of the limiting slot 10, thereby improving the contact surface of the limiting slot 10 and the movable sliding block 12, ensuring the combination effect of the stress surface, stabilizing the connection between the tension block 2 and the hook claw 1, after the installation is completed, the hook claw 1 and the tension block 2 form a sliding connection, the tension block 2 is driven to move forward and backward on one side of the hook claw 1 by rotating the adjusting bolt 5, and the sliding bolt 7 relatively slides in the guide slot 11.

[0030] The tension block 2 is provided with an adjusting threaded hole 8, the adjusting threaded hole 8 is perpendicular to the wheel shaft direction, the adjusting bolt 5 is threadedly connected with the adjusting threaded hole 8, the tension block 2 can slide forward and backward on one side of the hook claw 1 by rotating the adjusting bolt 5, thereby realizing the tensioning of the belt pulley, the structure is stable, the disassembly is not difficult, the maintenance is facilitated, the rotating adjusting bolt 5 is adopted for adjustment, the adjustment process is smooth, and the belt is not affected due to rapid changes.

[0031] The bicycle belt tensioner provided in the embodiment is installed on both sides of the rear wheel shaft, the bicycle belt tensioners on the left and right sides are symmetrically arranged, the hook claw 1 is fixedly connected with the bicycle rear fork, the rear wheel shaft is arranged in the wheel shaft fixing slot 13, and the adjusting bolts 5 on the two hook claws 1 also need to be synchronously adjusted to appropriate positions, so that the position of the vehicle shaft is appropriate.

[0032] The bicycle belt tensioner provided in the embodiment is adjusted, the adjusting bolts 5 on the left and right sides are synchronously rotated, the adjusting bolt 5 can only be rotated and cannot be moved due to the limitation of the position of the adjusting bolt 5 itself, the tension block 2 is moved after the adjusting bolt 5 is rotated, the position of the tension block 2 is adjusted, the rear wheel shaft is moved by the tension block 2, and the tightness of the belt is changed, so that the tensioning of the belt pulley is achieved, the synchronous adjustment can ensure that the positions of the two tension blocks 2 and the relative positions of the hook claws 1 corresponding to the two tension blocks 2 are adapted, so that the position of the vehicle wheel shaft remains horizontal before and after the adjustment, the whole is translated, and the tensioning of the belt is realized.

[0033] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A belt tensioner for a bicycle, characterized by: The utility model relates to a kind of hooking claws (1) and tensioning blocks (2) for symmetrical arrangement, the one side of the hooking claw (1) is equipped with detachable tensioning block (2), the tensioning block (2) is slidably connected with the hooking claw (1), wheel shaft fixed groove (13) and driving mechanism are equipped on tensioning block (2), driving mechanism drives the movement of tensioning block (2) on the one side of hooking claw (1).

2. Belt tensioner for a bicycle according to claim 1, characterized in that: It also includes a limiting mechanism for the sliding connection of the tensioning block (2) and the hooking claw (1), and limits the direction of movement of the tensioning block (2) on the hooking claw (1).

3. Belt tensioner for a bicycle according to claim 2, characterized in that: The limiting mechanism includes a movable slot (9) and a movable sliding block (12). The tensioning block (2) is provided with a movable slot (9), the hooking claw (1) is provided with a bolt hole (6), a sliding bolt (7) is arranged in the bolt hole (6), the sliding bolt (7) is connected with the movable sliding block (12), the movable sliding block (12) is arranged in the movable slot (9), and the size of the movable sliding block (12) is matched with the movable slot (9).

4. Belt tensioner for a bicycle according to claim 3, characterized in that: The movable slot (9) is a stepped slot, including a limiting slot (10) and a guide slot (11), the size of the guide slot (11) is smaller than that of the limiting slot (10), the guide slot (11) penetrates the tensioning block (2), and the limiting slot (10) is used for accommodating the movable sliding block (12).

5. Belt tensioner for a bicycle according to claim 4, characterized in that: The upper and lower edges of the movable sliding block are flat structures, matched with the upper and lower surfaces of the limiting slot, and limiting the relative sliding of the tensioning block (2) on the movable sliding block (12).

6. The belt tensioner for a bicycle according to claim 1, characterized in that: The driving mechanism includes an adjusting bolt (5) and an adjusting threaded hole (8). The adjusting bolt (5) is threadedly connected with the adjusting threaded hole (8), the nut of the adjusting bolt (5) is arranged axially on the hooking claw (1), the nut of the adjusting bolt (5) is rotationally connected with the hooking claw (1), and the adjusting threaded hole (8) is arranged on the tensioning block (2).

7. Belt tensioner for a bicycle according to claim 6, characterized in that: The hooking claw (1) is provided with a displacement fixing hole (3), and the nut of the adjusting bolt (5) is arranged in the displacement fixing hole (3).

8. The belt tensioner for a bicycle according to claim 4, characterized in that: A ring of protrusions is arranged at the slot opening of the limiting slot (10).

9. The belt tensioner for a bicycle according to claim 3, characterized in that: The number of movable slots (9) is two, the number of bolt holes (6) on the hooking claw (1) corresponds to the number of movable slots (9), and the bolt holes (6) are arranged staggered along the lower half of the hooking claw (1).

10. The belt tensioner for a bicycle according to claim 3, characterized in that: The outer end of the bolt hole (6) is a counterbore, and after the sliding bolt (7) is installed in place, the nut is located in the counterbore of the bolt hole (6).

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