A cervical vertebra traction chair

Abstract

A cervical vertebra traction chair, comprising a seat, a lifting appliance, a bottom frame fixedly connected in the seat, a traction motor fixedly installed on the bottom frame, a speed reducer connected to the output shaft of the traction motor, a winding wheel fixedly installed on the output shaft of the speed reducer, a traction rope wound on the winding wheel, a vertical rod fixedly connected on the seat, a horizontal rod directly or indirectly fixedly connected on the vertical rod, a fixed pulley A and a fixed pulley B rotatably installed near the upper end of the vertical rod, a fixed pulley C and a fixed pulley D rotatably installed near the end of the horizontal rod, the fixed pulley A and the fixed pulley B being distributed left and right, the fixed pulley C and the fixed pulley D being distributed left and right, a lifting wheel rotatably connected in the middle of the lifting appliance, the traction rope being connected to a tension sensor after being wound on the fixed pulley A, the fixed pulley C, the lifting wheel, the fixed pulley D and the fixed pulley B in sequence from the winding wheel, and the tension sensor being fixedly installed on the bottom frame. The cervical vertebra traction chair is safe.

Description

Technical Field

[0001] This utility model relates to traction devices, and in particular to a cervical traction chair, belonging to the field of medical device technology. Background Technology

[0002] Cervical traction chairs are a common medical device used for seated cervical traction therapy. Existing cervical traction chairs generally employ electric traction control. Their basic structure includes a seat, a traction drive device (usually a reducer with a motor, a pulley fixedly connected to the reducer's output shaft, and a traction rope wound around the pulley), a traction frame (composed of uprights, crossbars, etc.), and a suspension system (suspenders). The neck support is connected to the suspension system. The traction effect is achieved by pulling the traction rope through the traction drive device. This type of device has been disclosed in numerous Chinese patent applications, such as CN2020114630064 (a cervical traction chair), CN202011466301.5 (an electric cervical traction chair), and CN20242086. 3860.7 discloses a traction device for cervical spine rehabilitation treatment, etc. Some traction devices also have a lumbar and back massage function, and some traction devices also integrate fumigation function. The existing traction devices have the following problems in manufacturing and use: First, with the development of technologies such as automatic control and intelligent control, in order to control and monitor the magnitude of traction force, traction chairs are generally equipped with tension sensors. The tension sensors are generally installed at the end of the suspension rope (suspension). Although this configuration method can conveniently detect the magnitude of traction force, the sensor cable is exposed and the wiring is inconvenient; Second, existing cervical traction chairs with a high degree of automation have the risk of motor malfunction. When the motor malfunctions, there is no hard protection, which may cause injury to the user. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems of existing cervical traction chairs and to provide a cervical traction chair.

[0004] To achieve the purpose of this utility model, the following technical solution is adopted: A cervical traction chair includes a seat and a suspension device. A base frame is fixedly connected inside the seat, and a traction motor is fixedly installed on the base frame. A reducer is connected to the output shaft of the traction motor, and a winding wheel is fixedly installed on the output shaft of the reducer. The traction rope is wound on the winding wheel. A vertical pole is fixedly connected to the seat, and a crossbar is directly or indirectly fixedly connected to the vertical pole. The crossbar is a telescopic pole, and fixed pulleys A and B are rotatably installed near the upper end of the vertical pole. Fixed pulleys C and D are rotatably installed near the end of the crossbar. Fixed pulleys A and B are distributed to the left and right, and fixed pulleys C and D are distributed to the left and right. Fixed pulleys A and C are located on one side, and fixed pulleys B and D are located on the other side. A lifting wheel is rotatably connected in the middle of the lifting device. The traction rope is led out from the wheel and passes upward in sequence around fixed pulleys A, C, the lifting wheel, D, and B before connecting to the tension sensor. The tension sensor is fixedly installed on the base frame.

[0005] Furthermore, a limiting plate is fixedly connected to the base frame, and a limiting hole is opened on the limiting plate. When the traction rope is connected from the fixed pulley B to the tension sensor, it passes through the limiting hole. A limiting block is fixedly connected to the traction rope below the limiting hole, and the size of the limiting block is larger than the limiting hole.

[0006] Furthermore, the crossbar is a sleeve-type telescopic bar.

[0007] Furthermore, a fixed plate is fixedly connected to the upper end of the lifting device, the lifting wheel is located below the fixed plate, and a rope hole is opened on the fixed plate, through which the traction rope passes.

[0008] Furthermore, multiple pairs of lifting rings are connected to the lower end of the lifting device, with two rings in each pair being symmetrical about the radial line of the lifting wheel in the vertical direction.

[0009] The positive and beneficial technical effects of this utility model are as follows: the tension sensor of this cervical traction chair is easy to install and has motor runaway protection, which will be described in detail with reference to specific implementation methods. Attached Figure Description

[0010] Figure 1 This is an overall schematic diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of the upper part of the pole.

[0012] Figure 3 This is a schematic diagram of the lifting device.

[0013] Figure 4 This is a schematic diagram of the limiting plate. Detailed Implementation

[0014] To more fully explain the implementation of this utility model, implementation examples are provided. These implementation examples are merely illustrative of this utility model and do not limit its scope.

[0015] The present invention will be further explained in detail with reference to the accompanying drawings, in which the following references are made: 1: seat; 2: base frame; 3: motor; 4: winding wheel; 5: upright; 6: traction rope; 7: fixed pulley A; 8: fixed pulley B; 9: fixed pulley C; 10: fixed pulley D; 11: telescopic rod; 12: lifting device; 13: tension sensor; 14: limiting plate; 15: limiting hole; 16: lifting ring; 17: lifting wheel; 18: fixing plate; 19: rope hole; 20: limiting block.

[0016] As shown in the attached figure, a cervical traction chair includes a seat 1 and a suspension device 12. A base frame 2 is fixedly connected inside the seat, and a traction motor 3 is fixedly installed on the base frame 2. A reducer is connected to the output shaft of the traction motor, and a pulley 4 is fixedly installed on the output shaft of the reducer. A traction rope 6 is wound on the pulley 4, and the inner end of the traction rope is fixedly connected to the pulley. A vertical pole 5 is fixedly connected to the seat, and a crossbar is directly or indirectly fixedly connected to the vertical pole. The crossbar is a telescopic pole 22. The above is a mature configuration of existing traction chairs.

[0017] In this embodiment, the crossbar is a sleeve-type telescopic bar. Fixed pulleys A7 and B8 are rotatably installed near the upper end of the upright. Fixed pulleys C9 and D10 are rotatably installed near the end of the crossbar. Fixed pulleys A and B are distributed left and right, and fixed pulleys C and D are distributed left and right. Fixed pulleys A and C are located on one side, and fixed pulleys B and D are located on the other side. A hanging wheel 17 is rotatably connected in the middle of the suspension device 12. In this embodiment, a fixed plate 18 is fixedly connected to the upper end of the suspension device, and the hanging wheel 17 is located below the fixed plate. A rope hole 19 is opened on the fixed plate, through which the traction rope 6 passes. Multiple pairs of lifting rings 16 are connected to the lower end of the suspension device. The two rings in each pair are symmetrical about the radial line of the hanging wheel in the vertical direction. Multiple pairs can be interchanged to allow for selection of appropriate rings to connect with the neck brace according to the patient's actual situation (such as weight, head size) during traction.

[0018] After the traction rope 6 is led out from the winding wheel, it goes upward and passes through the fixed pulley A, fixed pulley C, hanging wheel, fixed pulley D, and fixed pulley B in sequence before connecting to the tension sensor 13, which is fixedly installed on the base frame.

[0019] In this invention, to prevent potential harm to the patient from a malfunctioning motor, a limiting plate 20 is fixedly connected to the base frame. The limiting plate 20 has a limiting hole 15. The traction rope 6 passes through the limiting hole when connecting from the fixed pulley B to the tension sensor. A limiting block 20, larger than the limiting hole, is fixedly connected to the traction rope below the limiting hole. When the motor malfunctions, pulling the traction rope to a certain extent will cause the limiting block to be blocked by the limiting hole on the limiting plate, preventing further pulling of the traction rope and effectively preventing harm from potential motor malfunction.

[0020] Compared to traditional traction chairs, this traction chair mainly changes the installation method of the tension sensor, the winding method of the traction rope, and adds hardware protection against motor runaway. Other parts are existing technologies and can be referenced from existing technologies and products.

[0021] After a detailed description of the embodiments of this utility model, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the scope of the technical solution of this utility model, and this utility model is not limited to the embodiments of the examples given in the specification.

Claims

1. A cervical traction chair, comprising a seat and a suspension device, a base frame fixedly connected inside the seat, a traction motor fixedly mounted on the base frame, a reducer connected to the output shaft of the traction motor, a pulley fixedly mounted on the output shaft of the reducer, a traction rope wound around the pulley, a vertical pole fixedly connected to the seat, and a crossbar directly or indirectly fixedly connected to the vertical pole, wherein the crossbar is a telescopic pole, characterized in that: Fixed pulleys A and B are rotatably installed near the upper end of the upright, and fixed pulleys C and D are rotatably installed near the end of the crossbar. Fixed pulleys A and B are distributed to the left and right, and fixed pulleys C and D are distributed to the left and right. Fixed pulleys A and C are located on one side, and fixed pulleys B and D are located on the other side. A lifting wheel is rotatably connected in the middle of the lifting device. The traction rope is led out from the wheel and passes upward in sequence around fixed pulleys A, C, the lifting wheel, D, and B before connecting to the tension sensor. The tension sensor is fixedly installed on the base frame.

2. The cervical traction chair according to claim 1, characterized in that: A limiting plate is fixedly connected to the base frame. A limiting hole is opened on the limiting plate. When the traction rope connects from the fixed pulley B to the tension sensor, it passes through the limiting hole. A limiting block is fixedly connected to the traction rope below the limiting hole. The size of the limiting block is larger than that of the limiting hole.

3. A cervical traction chair according to claim 1, characterized in that: The crossbar is a sleeve-type telescopic bar.

4. A cervical traction chair according to claim 1, characterized in that: A fixed plate is fixedly connected to the upper end of the lifting device, and the lifting wheel is located below the fixed plate. The fixed plate has a rope hole, through which the traction rope passes.

5. A cervical traction chair according to claim 1, characterized in that: Multiple pairs of lifting rings are connected to the lower end of the lifting device. Two of the lifting rings in each pair are symmetrical about the radial line of the lifting wheel in the vertical direction.

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