Scissors back pulling trainer

Abstract

The utility model relates to a scissors back-pulling training device which comprises a training device body and a swing arm body, the swing arm body comprises an upper swing arm and a lower swing arm which are of a split structure, the upper swing arm and the lower swing arm are respectively connected with a frame of the training device body in a rotating mode, and the upper swing arm and the lower swing arm are connected through a synchronous transmission mechanism. The upper swing arm drives the lower swing arm to act through the synchronous transmission mechanism; the back-pulling training device is reasonable in structural design, the upper swing arm and the lower swing arm which are of a split structure are adopted, so that the swing arm bodies are prevented from swinging outwards, the balance weight effect can be achieved by swinging the lower swing arm up and down, space occupation of the back-pulling training device with the scissors in the training process is reduced, and use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a scissors back pull trainer. Background Art

[0002] At present, a scissors back pull trainer generally includes two groups of symmetrically distributed swing arms. The two groups of swing arms are cross-distributed, resembling a scissors structure. A handle is provided at the upper part of the swing arm, and a barbell rod is provided at the lower part of the swing arm. A barbell for counterweight is installed on the barbell rod. However, in this structure, the swing arm is an integral structure and is formed by welding. When in use, the stretching movement of the user is opposite to the swinging movement angle of the swing arm, so that the stretching movement direction will cause the swing arm to swing outwards, occupying a large training space and posing a safety threat to other surrounding trainers. Summary of the Invention

[0003] In order to solve the deficiencies in the prior art, the purpose of the utility model is to provide a scissors back pull trainer, which adopts a split structure to reduce the space occupied during the training process.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A scissors back pull trainer includes a trainer body and its swing arm body, characterized in that: the swing arm body includes an upper swing arm and a lower swing arm with a split structure. The upper swing arm and the lower swing arm are respectively rotatably connected to the frame of the trainer body, and the upper swing arm and the lower swing arm are connected by a synchronous transmission mechanism. The upper swing arm drives the lower swing arm to move through the synchronous transmission mechanism.

[0006] At least one group of handles connected thereto are provided at the top end of the upper swing arm, and an assembly shaft connected thereto is provided at the bottom end of the upper swing arm. The assembly shaft is rotatably connected to the frame of the trainer body.

[0007] The assembly shaft is also connected to the synchronous transmission mechanism.

[0008] A barbell rod body is provided at one end of the lower swing arm, and the other end of the lower swing arm is rotatably connected to the frame of the trainer body.

[0009] The lower swing arm makes an up-and-down swinging movement through the rotational connection with the frame.

[0010] The lower swing arm is located at the edge or inside of the frame of the trainer body.

[0011] The barbell rod body adopts a circular tube, and the outer end thereof is processed into a spherical shape by spinning.

[0012] The middle part of the lower swing arm is also connected to the synchronous transmission mechanism.

[0013] The synchronous transmission mechanism is rotatably connected to the frame of the trainer body, and the outer sides of the synchronous transmission mechanism are respectively rotatably connected to the upper swing arm and the lower swing arm through connecting members.

[0014] A swing arm connected to the synchronous transmission mechanism is provided on the outer side of the synchronous transmission mechanism, and the swing arm is rotatably connected to the connecting member.

[0015] The connecting member adopts an adjustable pull rod.

[0016] The beneficial effects of the present utility model are as follows: The structure is reasonably designed. By adopting the upper swing arm and the lower swing arm with a split structure, the swinging motion of the swing arm body to the outside is avoided, so that the lower swing arm can achieve the counterweight effect by swinging up and down, reducing the space occupied by the scissors back trainer during training and improving the safety of use. Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the present utility model.

[0019] Figure 2 It is a rear structural schematic diagram of the present utility model.

[0020] Figure 3 It is a side structural schematic diagram of the present utility model.

[0021] In the figure: 100 frame, 200 upper swing arm, 201 handle, 202 assembly shaft, 300 connecting member, 400 lower swing arm, 401 barbell rod body, 500 synchronous transmission mechanism, 501 swing arm. Detailed Embodiment

[0022] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification.

[0023] According to Figures 1 to 3 As shown: This embodiment provides a scissors back trainer, including a trainer body. The main body of the trainer body is a frame 100. Two groups of symmetrically distributed swing arm bodies are installed on the upper part of the frame 100, as well as components such as a seat plate, a backrest, a barbell rod body, and a multifunctional display screen used in combination. Among them, the innovation of this embodiment mainly lies in the structural design of the swing arm body, and its structure is specifically described as follows.

[0024] The swing arm body includes an upper swing arm 200 and a lower swing arm 400 with a split structure. The upper swing arm 200 is located at the upper part of the frame 100, and the lower swing arm 400 is located at the lower part of the frame 100. The upper swing arms 200 of the two groups of swing arm bodies still maintain the layout design of cross distribution. The lower swing arms 400 of the two groups of swing arm bodies are respectively located on both sides of the lower part of the frame 100. In order to achieve the transmission effect between the upper swing arm 200 and the lower swing arm 400, a synchronous transmission mechanism 500 rotatably assembled with it is also installed at the middle position of the frame 100, where:

[0025] Two groups of handles 201 connected to it are provided at the top end of the upper swing arm 200 to meet different gripping needs. An assembly shaft 202 fixedly connected to it is provided at the bottom end of the upper swing arm 200. The assembly shaft 202 is arranged through the corresponding sleeve on the frame 100, so that the assembly shaft 202 is rotatably connected to the frame 100 of the trainer body. In this way, the upper swing arm 200 can rotate around the assembly shaft 202, and at the same time, the assembly shaft 202 is also connected to the synchronous transmission mechanism 500 to achieve transmission connection;

[0026] The lower swing arm 400 is located inside the edge of the frame. A barbell rod body 401 is provided at the front end of the lower swing arm 400. The rear end of the lower swing arm 400 is rotatably connected to the middle part of the frame 100 of the trainer body. The front end of the lower swing arm 400 is inclined downward, so that the front end of the lower swing arm 400 is padded on the bottom support of the frame 100. In this way, the lower swing arm 400 can rotate around the rear end, and at the same time, the middle part of the lower swing arm 400 is also connected to the synchronous transmission mechanism 500 to achieve transmission connection; At the same time, due to the assembly structure of the lower swing arm 400, the use effect of its counterweight will be realized through the up and down swing, and it will not move outward due to the swing action of the upper swing arm 200, thus reducing the space occupied during the training process;

[0027] Furthermore, the barbell rod body 401 adopts a circular tube body, and its outer end is processed into a spherical shape by spinning. Since the diameter of the end of the barbell rod body 401 gradually changes, it forms a guide during the barbell picking and placing process, reducing hard collision contact and making it safer to use. At the same time, there is no pipe opening at the end of the barbell rod body 401, and there is no need to assemble a cover for sealing treatment. The structural strength of the spherical end is much higher than that of a plastic cover, and it is not easy to be damaged even if a collision occurs;

[0028] There are two sets of the synchronous transmission mechanism 500, corresponding to two sets of swing arm bodies respectively. The main body of the synchronous transmission mechanism 500 is of a sleeve structure. There are two sets of swing arms 501 connected to the outside of the synchronous transmission mechanism 500. The two sets of swing arms 501 are radially distributed. The two sets of swing arms 501 are respectively connected to the upper swing arm 200 and the lower swing arm 400 through the corresponding connecting pieces 300. After being assembled with the frame 100, the synchronous transmission mechanism 500 is rotatably connected to the corresponding mounting shaft of the frame 100 through its sleeve structure. During the rotation of the synchronous transmission mechanism 500, its two sets of swing arms 501 will respectively synchronize with the actions of the upper swing arm 200 and the lower swing arm 400. In this way, when the user uses it, the swinging action of the upper swing arm 200 to the outside will drive the lower swing arm 400 to perform an up-and-down swinging action through the synchronous transmission mechanism 500;

[0029] Further, the connecting piece 300 adopts an adjustable pull rod, and its two ends are respectively rotatably connected to the swing arm 501, the upper swing arm 200 or the lower swing arm 400 of the synchronous transmission mechanism 500. In the assembly structure, the length of the connecting piece 300 can be adjusted to meet the assembly accuracy between components and achieve the best debugging and use effect.

[0030] The above is only the preferred implementation mode of the present invention. As long as the technical solutions that achieve the purpose of the present invention by basically the same means are within the protection scope of the present invention.

Claims

1. A scissor back pull trainer, comprising a trainer body and its swing arm body, characterized in that: The swing arm body includes an upper swing arm and a lower swing arm with a split structure. The upper swing arm and the lower swing arm are respectively rotatably connected to the frame of the trainer body, and the upper swing arm and the lower swing arm are connected by a synchronous transmission mechanism. The upper swing arm drives the lower swing arm to act through the synchronous transmission mechanism.

2. The scissor back trainer according to claim 1, wherein: At least one set of handles connected thereto are provided at the top end of the upper swing arm, and an assembly shaft connected thereto is provided at the bottom end of the upper swing arm, and the assembly shaft is rotatably connected to the frame of the trainer body.

3. The scissor back pull trainer according to claim 2, wherein: The assembly shaft is also connected to the synchronous transmission mechanism.

4. The scissor back trainer according to claim 1, wherein: A barbell rod body is provided at one end of the lower swing arm, and the other end of the lower swing arm is rotatably connected to the frame of the trainer body.

5. The scissor back pull trainer according to claim 4, wherein: The lower swing arm performs a swinging motion up and down through the rotational connection with the frame.

6. The scissors back pull trainer according to claim 1 or 4 or 5, characterized in that: The lower swing arm is located at the edge or inside of the frame of the trainer body.

7. The scissor back pull trainer according to claim 4, characterized in that: The barbell rod body is made of a circular tube, and the outer end thereof is formed into a spherical shape by spinning.

8. The scissor back pull trainer according to claim 4, wherein: The middle part of the lower swing arm is also connected to the synchronous transmission mechanism.

9. The scissor back pull trainer according to claim 1, wherein: The synchronous transmission mechanism is rotatably connected to the frame of the trainer body, and the outer sides of the synchronous transmission mechanism are respectively rotatably connected to the upper swing arm and the lower swing arm through connecting members.

10. The scissors back pull trainer according to claim 9, characterized in that: A swing arm connected thereto is provided on the outer side of the synchronous transmission mechanism, and the swing arm is rotatably connected to the connecting member.

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