Stretcher for physical fitness

Abstract

The utility model provides a stretching device for physical fitness, which belongs to the technical field of stretching device assistance and comprises a first stand column and a second stand column, a first threaded rod and a second threaded rod are rotatably arranged in the first stand column and the second stand column respectively, and a connecting column is fixedly connected between the first stand column and the second stand column. And the height adjusting assembly comprises a first nut and a second nut which are in threaded connection with the first threaded rod and the second threaded rod. By arranging the height adjusting assembly, the stretching height of the equipment can be conveniently adjusted, the actual use requirement is better met, the applicability of the equipment is improved, meanwhile, the relative stretching position is adjusted through the dimension adjusting assembly, the stretching position is synchronously adjusted when the height is adjusted, and the equipment is more efficient, convenient and rapid to use. And the actual use requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of stretcher auxiliary, in particular to a stretcher for sports and fitness. Background Art

[0002] With the continuous development of society, people pay more and more attention to their own physical health issues and will selectively exercise, whether by themselves or through fitness equipment, in order to achieve their own health. Among some fitness equipment, stretchers are a relatively common equipment used for muscle stretching exercises to increase joint flexibility and flexibility, thereby improving body posture, reducing stress and preventing injuries.

[0003] After searching, the patent document with publication number CN217567277U discloses a stretcher for sports and fitness, including a base plate, the upper end of which is provided with symmetrically arranged screws, the upper ends of the screws on both sides are rotatably provided with top plates, the top plates are provided with a driving assembly for screw rotation, and the outer sides of the screws on both sides are provided with a lifting plate through a threaded sleeve. The utility model can realize the adjustment of the height of the stretcher and can also increase the counterweight.

[0004] The above prior art often has the following problems when used:

[0005] When using existing stretchers for sports and fitness, different users have different dimensions, including height, arm span, shoulder width, etc., so not only the height needs to be adjusted, but the taller the height, the longer the arm span. Therefore, the force position of stretching needs to be changed to better meet actual needs. At the same time, when adjusting, the existing technology is not convenient enough to adjust the height and stretching position of the stretcher. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a stretching device for sports and fitness.

[0007] The embodiment of the utility model provides a stretching device for sports and fitness, comprising:

[0008] A first column and a second column, wherein a first threaded rod and a second threaded rod are rotatably disposed in the first column and the second column respectively, and a connecting column is fixedly connected between the first column and the second column;

[0009] A height adjustment component, the height adjustment component includes a No. 1 nut and a No. 2 nut which are threadedly connected to a No. 1 threaded rod and a No. 2 threaded rod, a bearing column is fixedly connected between the No. 1 nut and the No. 2 nut, a rotating shaft is arranged in the No. 1 column, the rotating shaft is rotatably connected to the side wall of the No. 1 column through a bearing, the No. 1 threaded rod is circumferentially fixedly connected to a driven bevel gear, the side end of the rotating shaft is fixedly connected to a driving bevel gear, the driving bevel gear is meshed with the driven bevel gear, the top end of the No. 1 threaded rod is circumferentially fixedly connected to a driving wheel, the top end of the No. 2 threaded rod is circumferentially fixedly connected to a driven wheel, the driving wheel and the driven wheel are connected through a belt transmission;

[0010] A dimension adjustment component, wherein the dimension adjustment component is disposed in the bearing column;

[0011] Two stretching components are respectively arranged on the sides of the first column and the second column.

[0012] Furthermore, the dimension adjustment assembly includes a bidirectional threaded rod rotatably arranged in the supporting column, the bidirectional threaded rod is circumferentially fixedly connected with a rotating gear at one end close to the No. 1 column, the side wall of the No. 1 column is fixedly connected with a rack, the rotating gear is meshed with the rack, and the threaded sections of the bidirectional threaded rod with opposite thread directions are threadedly connected with No. 3 nuts, the bottom surfaces of two No. 3 nuts are fixedly connected with connecting blocks, and the bottom surfaces of two connecting blocks are fixedly connected with handles.

[0013] Furthermore, the stretching assembly includes a base plate fixedly connected to the bottom side wall of the No. 1 column, two track rods are fixedly connected to the surface of the base plate, a configuration block is slidably sleeved outside the two track rods, a force ring is fixedly connected to the back of the connection block, a traction rope is fixedly connected to the surface of the counterweight block, and the other end of the traction rope passes through the force ring and the sleeve and is fixedly connected to the handle surface.

[0014] Furthermore, the side walls at both ends of the bearing column are respectively fitted with the inner walls of the No. 1 column and the No. 2 column, a partition is fixedly connected between the inner walls of the bearing columns, and the bidirectional threaded rod is connected to the side wall of the partition by circumferential penetration and rotation.

[0015] Furthermore, a rotating handle is fixedly connected to one end of the rotating shaft away from the No. 1 threaded rod.

[0016] Furthermore, the front and back surfaces of the two connecting blocks are respectively fitted with the inner wall of the bearing column.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the utility model, by providing a height adjustment component, the stretching height of the equipment can be conveniently adjusted according to different users, which is more in line with actual use needs and increases the applicability of the equipment. At the same time, the relative position of the stretching is adjusted by the dimension adjustment component. The arm span of a person is related to the height. The stretching position is synchronously adjusted according to the adjusted height without the need for additional adjustment. It is more efficient and convenient and is more in line with actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure analysis of a stretching device for sports and fitness described in an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of a stretching device for sports and fitness described in an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a stretching device for sports and fitness described in an embodiment of the utility model from another perspective.

[0022] Figure 4 yes Figure 1 Enlarged view of point A.

[0023] In the above drawings: 1 No. 1 column, 2 No. 2 column, 3 No. 1 threaded rod, 4 No. 2 threaded rod, 5 connecting column, 6 No. 1 nut, 7 No. 2 nut, 8 bearing column, 9 rotating shaft, 10 driven bevel gear, 11 driving bevel gear, 12 driving wheel, 13 driven wheel, 14 two-way threaded rod, 15 rotating gear, 16 rack, 17 No. 3 nut, 18 connecting block, 19 sleeve, 20 handle, 21 bottom plate, 22 track rod, 23 counterweight, 24 force ring, 25 traction rope. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1-Figure 4 As shown, the embodiment of the utility model provides a stretching device for sports and fitness, comprising:

[0026] A first column 1 and a second column 2 are respectively provided with a first threaded rod 3 and a second threaded rod 4 for rotation in the first column 1 and the second column 2, a connecting column 5 is fixedly connected between the first column 1 and the second column 2, and a height adjustment component is provided. The height adjustment component includes a first nut 6 and a second nut 7 which are threadedly connected to the first threaded rod 3 and the second threaded rod 4, a bearing column 8 is fixedly connected between the first nut 6 and the second nut 7, a rotating shaft 9 is provided in the first column 1, and the rotating shaft 9 is rotatably connected to the side wall of the first column 1 through a bearing, and the first threaded rod 6 is fixedly connected to the side wall of the first column 1 through a bearing. The circumference of the threaded rod 3 is fixedly connected with a driven bevel gear 10, the side end of the rotating shaft 9 is fixedly connected with a driving bevel gear 11, the driving bevel gear 11 is meshed with the driven bevel gear 10, the top of the No. 1 threaded rod 3 is circumferentially fixedly connected with a driving wheel 12, the top of the No. 2 threaded rod 4 is circumferentially fixedly connected with a driven wheel 13, the driving wheel 12 and the driven wheel 13 are connected through a belt drive, because the diameters of the driving wheel 12 and the driven wheel 13 are different, there is a transmission ratio between the two, so the rotation speed of the No. 2 threaded rod 4 is greater than that of the No. 1 threaded rod 3, so the No. 2 threaded rod 4 The pitch of the threaded rod 3 is smaller than that of the first threaded rod 3, so that when the first threaded rod 3 and the second threaded rod 4 rotate, the first nut 6 and the second nut 7 can move synchronously, and the side walls of the two ends of the bearing column 8 are respectively fitted with the inner side walls of the first column 1 and the second column 2, so that the first nut 6 and the second nut 7 have a limit position and will not rotate with the first threaded rod 3 and the second threaded rod 4 when they rotate. The end of the rotating shaft 9 away from the first threaded rod 3 is fixedly connected with a rotating handle for the convenience of the user to adjust. The two stretching components, the two stretching components The components are respectively arranged on the sides of the No. 1 column 1 and the No. 2 column 2. The stretching assembly includes a bottom plate 21 fixedly connected to the bottom side wall of the No. 1 column 1. Two track rods 22 are fixedly connected to the surface of the bottom plate 21. The two track rods 22 are slidably sleeved with a counterweight 23 outside. A force ring 24 is fixedly connected to the back of the connecting block 18. A traction rope 25 is fixedly connected to the surface of the counterweight 23. The other end of the traction rope 25 passes through the force ring 24 and the sleeve 19 and is fixedly connected to the surface of the handle 20. It is used for stretching exercises. The counterweight 23 is pulled by the traction rope 25 for exercise.

[0027] A dimension adjustment component is arranged in the bearing column 8. The dimension adjustment component includes a bidirectional threaded rod 14 rotatably arranged in the bearing column 8. The bidirectional threaded rod 14 is circumferentially fixedly connected with a rotating gear 15 at one end close to the No. 1 column 1. The side wall of the No. 1 column 1 is fixedly connected with a rack 16. The rotating gear 15 is meshed with the rack 16. The threaded sections of the bidirectional threaded rod 14 with opposite thread directions are threadedly connected with No. 3 nuts 17. The bottom surfaces of the two No. 3 nuts 17 are fixedly connected with connecting blocks 18. The bottom surfaces of the two connecting blocks 18 are fixedly connected with handles 20. The handles 20 are for users to grasp and perform stretching exercises. A partition is fixedly connected between the inner walls of the bearing column 8. The bidirectional threaded rod 14 is circumferentially penetrated and rotatably connected to the side walls of the partition to improve the stability of the equipment itself.

[0028] The detailed working process of the utility model is as follows:

[0029] When the user needs to adjust the height according to his own needs, he rotates the handle to rotate the shaft 9, and the shaft 9 rotates, thereby driving the active bevel gear 11 to rotate. The active bevel gear 11 rotates, and the transmission bevel gear 1 is driven to rotate through meshing transmission, and the driven bevel gear 1 is driven to rotate. The driven bevel gear 10 rotates, which will drive the No. 1 threaded rod 3 to rotate, and the No. 1 threaded rod 3 rotates, driving the driving wheel 12 to rotate, and the driving wheel 12 drives the driven wheel 13 to rotate through the belt transmission, and then drives the No. 2 threaded rod 4 to rotate. When the No. 1 threaded rod 3 and the No. 2 threaded rod 4 are rotated, the No. 1 nut 6 and the No. 2 nut 7 will not rotate with them under the limit of the bearing column 8, and will move up and down along the threaded rods connected to them respectively. Through the set pitch, the No. 1 nut 6 and the No. 2 nut 7 can move up and down synchronously, thereby driving the bearing column 8 to move up and down together, so as to achieve height adjustment, which is more in line with actual use needs and increases the applicability of the equipment.

[0030] When the height is adjusted, the bearing column 8 moves up and down, driving the rotating gear 15 to move up and down. When the rotating gear 15 moves up and down, it will mesh with the rack 16 and then rotate. The front and back sides of the bearing column 8 located at the position of the rotating gear 15 are provided with through grooves, which are convenient for the meshing transmission between the rotating gear 15 and the rack 16. When the rotating gear 15 rotates, it will drive the two-way threaded rod 14 to rotate. When the two-way threaded rod 14 rotates, the two No. 3 nuts 17 will not rotate with it under the limit of the connecting block 18 and the bearing column 8. Then, when the stretching height is increased, the two No. 3 nuts 17 are meshed with the two-way threaded rod 14 and will gradually move away from the two-way threaded rod 14. Similarly, when the height is lowered, the two will gradually move closer. The taller the height, the longer the arm span. Therefore, the height adjustment is used to synchronously adjust the stretching position without additional adjustment. It is more efficient and convenient, and it is more in line with actual usage needs.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stretching device for sports and fitness, characterized in that: include: A first column (1) and a second column (2), wherein a first threaded rod (3) and a second threaded rod (4) are rotatably disposed in the first column (1) and the second column (2), respectively, and a connecting column (5) is fixedly connected between the first column (1) and the second column (2); A height adjustment component, the height adjustment component comprises a first nut (6) and a second nut (7) which are threadedly connected to a first threaded rod (3) and a second threaded rod (4); a bearing column (8) is fixedly connected between the first nut (6) and the second nut (7); a rotating shaft (9) is provided inside the first column (1); the rotating shaft (9) is rotatably connected to the side wall of the first column (1) through a bearing; a driven bevel gear (10) is fixedly connected to the circumference of the first threaded rod (3); a driving bevel gear (11) is fixedly connected to the side end of the rotating shaft (9); the driving bevel gear (11) is meshed with the driven bevel gear (10); a driving wheel (12) is fixedly connected to the top end of the first threaded rod (3); a driven wheel (13) is fixedly connected to the top end of the second threaded rod (4); and the driving wheel (12) and the driven wheel (13) are connected via a belt transmission; A dimension adjustment component, wherein the dimension adjustment component is arranged in the bearing column (8); Two stretching components are respectively arranged on the sides of the first column (1) and the second column (2).

2. A stretching device for physical fitness according to claim 1, characterized in that: in: The dimension adjustment assembly comprises a bidirectional threaded rod (14) rotatably arranged in the bearing column (8); one end of the bidirectional threaded rod (14) close to the No. 1 column (1) is circumferentially fixedly connected with a rotating gear (15); the side wall of the No. 1 column (1) is fixedly connected with a rack (16); the rotating gear (15) is meshed with the rack (16); the threaded sections of the bidirectional threaded rod (14) with opposite thread directions are both threadedly connected with No. 3 nuts (17); the bottom surfaces of the two No. 3 nuts (17) are both fixedly connected with connecting blocks (18); the bottom surfaces of the two connecting blocks (18) are both fixedly connected with sleeves (19); and a handle (20) is provided below the sleeve (19).

3. A stretching device for physical fitness according to claim 2, characterized in that: in: The stretching assembly comprises a bottom plate (21) fixedly connected to the bottom side wall of the first column (1), two track rods (22) are fixedly connected to the surface of the bottom plate (21), a counterweight block (23) is slidably sleeved outside the two track rods (22), a force ring (24) is fixedly connected to the back of the connecting block (18), a traction rope (25) is fixedly connected to the surface of the counterweight block (23), and the other end of the traction rope (25) passes through the force ring (24) and the sleeve (19) and is fixedly connected to the surface of the handle (20).

4. A stretching device for physical fitness according to claim 2, characterized in that: in: The side walls at both ends of the bearing column (8) are respectively fitted with the inner walls of the first column (1) and the second column (2); a partition is fixedly connected between the inner walls of the bearing column (8); and the bidirectional threaded rod (14) is rotatably connected to the side walls of the partition by circumferential penetration.

5. A stretching device for physical fitness according to claim 1, characterized in that: in: The rotating shaft (9) is fixedly connected with a rotating handle at one end away from the No. 1 threaded rod (3).

6. A stretching device for physical fitness according to claim 2, characterized in that: in: The front and back surfaces of the two connecting blocks (18) are respectively fitted with the inner wall of the bearing column (8).

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