Novel main support rotation locking structure

Abstract

The utility model discloses a novel main support rotation locking structure which comprises a main support and supporting legs outside the two sides of the main support, the two supporting legs are each provided with an outer sleeve facing the main support, and first tooth holders are arranged at the inner ends of the two outer sleeves. Second tooth holders are further arranged on the two sides of the main support, and when the tooth parts of the first tooth holders are close to the tooth parts of the second tooth holders, the two tooth parts can be meshed. The first tooth holder / the second tooth holder is also connected with a rotating pipe, and the rotating pipe is inserted into the corresponding second tooth holder / first tooth holder, so that when the tooth parts of the first tooth holder and the second tooth holder are not meshed, the two tooth parts can relatively rotate by taking the rotating pipe as the center. Namely, when the two tooth parts are meshed, the main bracket is in a locked state and cannot rotate; when the two tooth parts are separated, the main support can rotate. Rotation or locking of the main support can be achieved only through matching of the two tooth holders, the structure is simple, and cost is low.

Description

Technical Field

[0001] The utility model relates to a novel main bracket rotation locking structure, which is mainly used for treadmills, rowing machines and the like that need to be folded. Background Art

[0002] Foldable treadmills and rowing machines are already popular in the market, and the folding structures are also varied. However, the folding structures of some treadmills are relatively complex, such as the folding treadmill with application number 200520017727.7, or the folding treadmill with application number 201310354490.0, in which the structures used to achieve folding are relatively complex and the production cost is high. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a new main bracket rotation locking structure with a simple structure.

[0004] The technical solution of the utility model is as follows:

[0005] A novel main bracket rotation locking structure includes a main bracket and supporting legs on both sides thereof, both supporting legs are provided with outer sleeves facing the main bracket, and the inner ends of the two outer sleeves are provided with first tooth seats; second tooth seats are also provided on both sides of the main bracket, and when the teeth of the first tooth seat are close to the teeth of the second tooth seat, the two teeth can mesh; the first tooth seat / second tooth seat is also connected with a rotating tube, and the rotating tube is inserted into the corresponding second tooth seat / first tooth seat, so that when the teeth of the first tooth seat and the second tooth seat are not meshed, the two teeth can rotate relative to each other with the rotating tube as the center. That is, when the two teeth are meshed, the main bracket is in a locked state and cannot rotate; when the two teeth are separated, the main bracket can rotate.

[0006] Preferably, it also includes a central axis, which is coaxial with the outer sleeve, the first gear seat, the second gear seat, and the rotating tube. One end of the central axis is installed on the outer sleeve on one side, and the other end passes through the first gear seat, the rotating tube, and the second gear seat on this side, and then passes through the second gear seat, the rotating tube, and the first gear seat on the other side, and then passes out of the outer sleeve on the other side. The end that passes out is provided with an external thread and is connected to a knob through the thread. Therefore, after the teeth of the first gear seat and the second gear seat are engaged, tightening the knob can lock the two gear seats; and when the knob is loosened, the teeth of the first gear seat and the second gear seat can be separated and disengaged.

[0007] Preferably, after the rotating tube is inserted into the first tooth seat / the second tooth seat, a spring is further provided in the first tooth seat / the second tooth seat, the spring is sleeved on the central axis, and the spring is against the rotating tube. When the knob is tightened, the spring is compressed, and when the knob is loosened, the spring is reset, thereby springing the first tooth seat and the second tooth seat apart, facilitating the rotation of the main bracket. That is, only one knob is needed to control the engagement / separation of the two tooth seats, and the operation is simple and convenient.

[0008] The beneficial effects of the present utility model are as follows:

[0009] The present utility model can achieve the rotation or locking of the main bracket only through the cooperation of two tooth seats, with a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present utility model will be described by way of examples and with reference to the accompanying drawings, where:

[0011] Figure 1 is a perspective schematic view of the present utility model;

[0012] Figure 2 is the front view of the present utility model;

[0013] Figure 3 is a schematic view of the cooperation of two tooth seats. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic views, only illustrating the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.

[0015] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0016] In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements; the fixed connection can be welding, screwing, or gluing. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0017] As Figures 1-3The novel main bracket rotation locking structure shown in the figure includes a main bracket 1 and support legs 2 on both outer sides thereof. Outer sleeves 3 are provided on both support legs 2 facing the main bracket 1. First tooth seats 4 are provided at the inner ends of the two outer sleeves 3. Second tooth seats 5 are also provided on both sides of the main bracket 1. When the tooth parts of the first tooth seats 4 approach the tooth parts of the second tooth seats 5, the two tooth parts can be engaged. The first tooth seats 4 / second tooth seats 5 are also connected to a rotating tube 6. The rotating tube 6 is inserted into the corresponding second tooth seats 5 / first tooth seats 4, so that when the tooth parts of the first tooth seats 4 and the second tooth seats 5 are not engaged, the two tooth parts can rotate relative to each other with the rotating tube 6 as the center. That is, when the two tooth parts are engaged, the main bracket is in a locked state and cannot rotate; when the two tooth parts are separated, the main bracket can rotate.

[0018] For the convenience of operation, a central shaft 7 is also provided. The central shaft 7 is coaxial with the outer sleeve 3, the first tooth seat 4, the second tooth seat 5, and the rotating tube 6. One end of the central shaft 7 is installed on the outer sleeve 3 on one side. After passing through the first tooth seat 4, the rotating tube 6, and the second tooth seat 5 on this side, it passes through the second tooth seat 5, the rotating tube 6, and the first tooth seat 4 on the other side, and then passes out of the outer sleeve 3 on the other side. An external thread 10 is provided at the passed-out end, and a knob 8 is connected by a thread. Therefore, after the tooth parts of the first tooth seat and the second tooth seat are engaged, tightening the knob can lock the two tooth seats; when the knob is loosened, the tooth parts of the first tooth seat and the second tooth seat can be separated by operation. For further convenience in use, after the rotating tube 6 is inserted into the first tooth seat 4 / second tooth seat 5, a spring 9 is also provided in the first tooth seat 4 / second tooth seat 5. The spring 9 is sleeved on the central shaft 7, and the spring 9 abuts against the rotating tube 6. When the knob is tightened, the spring is compressed, and when the knob is loosened, the spring returns to its original position, thereby springing the first tooth seat and the second tooth seat apart, and the main bracket can rotate conveniently without other operations. Therefore, under the action of the two tooth seats, the rotating tube, and the spring, only one knob is needed to control the engagement / separation of the two tooth seats, and the operation is simple and convenient.

[0019] Inspired by the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A novel main bracket rotation locking structure, comprising a main bracket (1) and support legs (2) on the outer sides of both sides thereof, characterized in that, Both support legs (2) are provided with outer sleeves (3) facing the main bracket (1), and the inner ends of the two outer sleeves (3) are provided with first tooth seats (4); second tooth seats (5) are also provided on both sides of the main bracket (1). When the tooth parts of the first tooth seats (4) approach the tooth parts of the second tooth seats (5), the two tooth parts can be meshed. The first tooth seat (4) / the second tooth seat (5) is also connected with a rotating pipe (6). The rotating pipe (6) is inserted into the corresponding second tooth seat (5) / the first tooth seat (4), so that when the tooth parts of the first tooth seat (4) and the second tooth seat (5) are not meshed, the two tooth parts can rotate relative to each other with the rotating pipe (6) as the center.

2. The novel main bracket rotation locking structure according to claim 1, wherein, It further includes a central shaft (7). The central shaft (7) is coaxial with the outer sleeve (3), the first tooth seat (4), the second tooth seat (5), and the rotating pipe (6). One end of the central shaft (7) is installed on the outer sleeve (3) on one side. After passing through the first tooth seat (4), the rotating pipe (6), and the second tooth seat (5) on this side, it passes through the second tooth seat (5), the rotating pipe (6), and the first tooth seat (4) on the other side, and then passes out from the outer sleeve (3) on the other side. The passed-out end is provided with an external thread (10) and is threadedly connected with a knob (8).

3. The novel main bracket rotation locking structure according to claim 1, characterized in that, After the rotating pipe (6) is inserted into the first tooth seat (4) / the second tooth seat (5), a spring (9) is further arranged in the first tooth seat (4) / the second tooth seat (5). The spring (9) is sleeved on the central shaft (7), and the spring (9) abuts against the rotating pipe (6).

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