CN219517686U - Portable chest expander - Google Patents
Portable chest expander Download PDFInfo
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- CN219517686U CN219517686U CN202222722669.4U CN202222722669U CN219517686U CN 219517686 U CN219517686 U CN 219517686U CN 202222722669 U CN202222722669 U CN 202222722669U CN 219517686 U CN219517686 U CN 219517686U
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- friction
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- rotating
- chest expander
- rotating wheel
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Abstract
The utility model discloses a portable chest expander, which is characterized in that a swing support plate is respectively hinged on the left and right sides of a middle rotating shaft seat, a rotating shaft support seat is arranged at the outer side end part of the swing support plate, and a tension assembly is fixed on the rotating shaft support seat; the tension assembly is internally provided with a rotating wheel and a torsion spring, the rotating wheel is provided with a traction rope which extends to the outside, and the torsion spring can realize integral rebound after external force application and traction; the rotating wheel is also provided with a linkage part which is matched with a resistance component formed by the driving piece and the friction piece, and the friction clearance between the driving piece and the friction piece is adjusted by external force application so as to realize the control of the friction force when the rotating wheel rotates, thereby adjusting the resistance when the rotating wheel rotates. The device has the advantages of simple structure, ingenious conception, small volume, convenient use and carrying, and can realize folding and storage, thereby being an ideal portable chest expander.
Description
Technical Field
The utility model belongs to the technical field of fitness equipment, and particularly relates to a portable chest expander.
Background
In the existing body-building equipment, the equipment used for tension training is often squatting type or sitting type integral equipment, the tension equipment is designed with a tension handle, and is connected with a counterweight group through a rope, so that a user can adjust the counterweight through a counterweight bolt.
The existing chest expander is a standard indoor training device, and is large in size although covering multiple body-building functions, and is not suitable for household use or portable carrying use; with the gradual enhancement of health consciousness of people, home fitness or portable fitness equipment is increasingly being pursued by people. However, at present, aiming at the tensile training equipment, small-sized foldable equipment used in multiple fields is rarely involved, and people with training requirements can only go to a professional training stadium, so that inconvenience is brought to people with actual body building requirements.
Aiming at the defects in the prior art, the technical problems to be solved at present are as follows: the tension device is designed to be applicable to various occasions, is miniaturized and convenient to carry, and can realize tension free adjustment.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a portable chest expander, which is novel in structural design and comprises a miniaturized and foldable main body part, wherein the main body part can be fixed on the ground or a wall body, and a tension adjusting device capable of adjusting force is arranged in the main body part.
In order to achieve the technical purpose, the utility model adopts the following scheme: the portable chest expander comprises a middle rotating shaft seat, wherein a swinging support plate is symmetrically hinged on the middle rotating shaft seat in a left-right mode, a rotating shaft support seat is arranged at the outer side end portion of the swinging support plate, and a tension assembly is fixed on the rotating shaft support seat; the tension assembly is internally provided with a rotating wheel and a torsion spring, and the rotating wheel is provided with a traction rope which extends to the outside; the rotating wheel is also provided with a linkage part which is matched with the resistance component; the resistance component comprises a driving piece and a friction piece, and the friction gap between the driving piece and the friction piece is adjusted through external force application so as to realize the control of the friction force when the rotating wheel rotates.
The top surface and the bottom surface of the swing supporting plate are fixed with flexible materials.
The tension assembly at least comprises a rotating unit, a friction unit and an adjusting unit.
The rotating wheel and the torsion spring are fixed in the rotating unit, and the torsion spring is provided with a plug-in part which is in plug-in fit with a base shaft on the rotating shaft supporting seat; the linkage part is provided with a splicing groove which is spliced and linked with the driving piece.
The resistance component is arranged in the friction unit, a fixed shaft is arranged in the friction unit, a plurality of driving sheets and friction sheets are spliced on the fixed shaft and can rotate on the fixed shaft, and the driving sheets and the friction sheets are arranged at intervals; each driving piece is provided with a plurality of bulges which are spliced and matched with the splicing grooves on the linkage part; the friction unit in still be provided with the baffle, the fixed axle runs through the baffle setting, is provided with a plurality of elastomeric element on the baffle, one side of baffle is the driver blade, its opposite side is provided with the moving part, moving part extrusion elastomeric element to driver blade and friction disc direction application of force.
The fixed shaft is provided with external threads on one side of the moving part, the moving part is matched with the threads of the fixed shaft, and the moving part is provided with a circle of driven teeth.
The adjusting unit is internally provided with a circle of driving teeth towards the friction unit, and the driving teeth and the driven teeth are matched to realize meshing driving.
The end part of the fixed shaft is provided with a threaded hole, the adjusting unit is provided with a counter bore, and a bolt matched with the threaded hole is arranged in the counter bore to fix the adjusting unit at the end part of the fixed shaft.
The rotating unit is provided with a plurality of pulleys or rolling wheels on one side facing the rotating shaft supporting seat, and the pulleys or the rolling balls are annularly arranged with the central shaft as an axle center.
The rotary unit is provided with a central groove at one side facing the rotary shaft supporting seat, and the torsion spring is arranged in the central groove.
The fixed shaft is provided with a shaft hole on one side facing the rotating unit, and the shaft hole is spliced with a central shaft on the rotating unit to realize axial positioning.
The outer wall of the rotating unit is provided with a through hole for realizing internal and external penetration, and a steel cable on the rotating wheel is led out from the through hole and then is connected with an external traction ring to realize external force application.
The scale is arranged on the adjusting unit and is opposite to the friction unit, and the display of the adjustment quantity of the adjusting unit can be realized through the scale.
The beneficial effects of the utility model are as follows: through the arrangement, the left and right sides of the middle rotating shaft seat are respectively hinged with the swinging support plates, the outer side end parts of the swinging support plates are provided with the rotating shaft support seats, and the rotating shaft support seats are fixedly provided with the tension assemblies; the tension assembly is internally provided with a rotating wheel and a torsion spring, the rotating wheel is provided with a traction rope which extends to the outside, and the torsion spring can realize integral rebound after external force application and traction; the rotating wheel is also provided with a linkage part which is matched with a resistance component formed by the driving piece and the friction piece, and the friction clearance between the driving piece and the friction piece is adjusted by external force application so as to realize the control of the friction force when the rotating wheel rotates, thereby adjusting the resistance when the rotating wheel rotates. The device has the advantages of simple structure, ingenious conception, small volume, convenient use and carrying, and can realize folding and storage, thereby being an ideal portable chest expander.
Drawings
FIG. 1 is a schematic diagram of the three-dimensional structure of the device;
FIG. 2 is a schematic diagram of the front view structure of the device after being folded;
FIG. 3 is a schematic view of the pull assembly shown disassembled;
FIG. 4 is a schematic diagram I of the internal perspective structure of the rotary unit;
FIG. 5 is a schematic diagram II of the internal three-dimensional structure of the rotary unit;
FIG. 6 is a schematic perspective view of a friction unit;
FIG. 7 is a schematic perspective view II of a friction unit;
FIG. 8 is a schematic cross-sectional view of a friction unit;
FIG. 9 is a schematic perspective view of an adjusting unit;
FIG. 10 is a schematic diagram of a front view of an adjusting unit;
in the accompanying drawings:
1. swing supporting plate, 11, upper film, 12, lower film, 13, rotating shaft supporting seat, 131, base shaft, 132, positioning groove, 14, bottom fixing seat, 2, middle rotating shaft seat, 3, tension assembly, 31, adjusting unit, 311, driving ring, 312, driving tooth, 313, counter bore, 314, graduated scale, 32, friction unit, 321, fixed shaft, 3211, front end baffle, 3212, threaded hole, 3213, shaft hole, 3214, rear end baffle, 322, friction plate, 323, driven tooth, 324, pressing plate, 325, adjusting cabin, 326, baffle plate, 3261, spring through hole, 327, spring, 328, driving plate, 3281, protrusion, 329, locking seat, 33, rotating unit, 330, central shaft, 331, linkage ring, 3311, inserting groove, 332, rotating wheel, 333, rotating seat, 3331, pulley, 3332, central groove, 334, torsion spring, 3341, inserting part; 34. and the pull ring, 35, the counter bore.
Detailed Description
The utility model is as shown in the attached drawing, a portable chest expander comprises a middle rotating shaft seat 2, wherein the middle rotating shaft seat 2 is symmetrically hinged with a swinging support plate 1 from left to right, the outer side end part of each swinging support plate 1 is provided with a rotating shaft support seat 13, and a tension assembly 3 is fixed on the rotating shaft support seat 13; as shown in fig. 2, the whole storage of the chest expander is realized by folding.
The tension assembly 3 comprises a rotating unit 33, a friction unit 32 and an adjusting unit 31, wherein the rotating unit 33 is connected with the rotating shaft supporting seat 13, a locking seat 329 is arranged at the bottom of the friction unit 32 and is connected with a groove on the bottom fixing seat 14 in an inserting way and then is fixed into a whole through a bolt, and the friction unit 32 is fixed to press and lock the rotating unit 33 on the rotating shaft supporting seat 13; the end of the fixed shaft 321 on the friction unit 32 is provided with a threaded hole 3212, the outer shell of the adjustment unit 32 is provided with a counter bore 313, a bolt is arranged in the counter bore 313 and matched with the threaded hole 3212 to fix the adjustment unit on the end of the fixed shaft, and the fixed adjustment unit 31 can be rotationally adjusted on the friction unit 32.
The rotating unit 33 is internally provided with a rotating wheel 332, the outer wall of the rotating unit 33 is provided with a through hole for realizing internal and external penetration, and a steel cable on the rotating wheel 332 is led out from the through hole and then is connected with an external traction ring 34 for realizing external traction and application. The pulling ring 34 is used as an external force application point for a user to apply force and pull the pulling device.
The rotating wheel 332 is provided with a linkage ring 331 towards the friction unit 32, the linkage ring 331 is provided with a single-end opening inserting groove 3311, the other side of the rotating wheel 332 is provided with a rotating seat 333, one side of the rotating seat 333 towards the rotating shaft supporting seat 13 is provided with a central groove 3332, a torsion spring 334 is fixed in the central groove 3332, and the torsion spring 334 is provided with an inserting part 3341 which is in inserting fit with the positioning groove 132 on the base shaft 131 on the rotating shaft supporting seat 13; with the above structure, when the rotating wheel 332, the linkage ring 331 and the rotating base 333 rotate synchronously, it must overcome the self elastic force of the torsion spring 334 and realize rebound by the torsion spring.
The device realizes the adjustment of the pulling force through the cooperation of the linkage ring 331 and the resistance component, and the design idea is to realize the adjustment of the external pulling force through adjusting the friction coefficient of the linkage ring 331 and the external resistance component. The resistance parts are all arranged in the friction unit 32, as shown in fig. 6, 7 and 8, a fixed shaft 321 and a baffle plate 324 are arranged in the friction unit 32, the friction unit 32 is divided into two independent cabins by the baffle plate 324, the fixed shaft 321 penetrates through the baffle plate 324 to be arranged in the two independent cabins, and in the cabin facing one side of the rotating unit 33, a plurality of driving plates 328 and friction plates 322 are inserted on the fixed shaft 321 and can rotate on the fixed shaft 321, and the driving plates 328 and the friction plates 322 are arranged at intervals; a plurality of protrusions 3281 are uniformly distributed on the outer diameter of each driving piece 328 and are in plug-in matching with the plug-in grooves 3311 on the linkage ring 331; the baffle plate 324 is provided with a plurality of spring through holes 3261, a spring 327 is arranged in the spring through holes 3261, external threads are arranged on the outer diameter of the fixed shaft 321 in the adjusting cabin 325 at the other side of the baffle plate, a circle of driven teeth 323 are arranged on the pressing plate 324 which is annularly arranged in a T shape, the driven teeth 323 are driven to enable the pressing plate 324 to integrally press and apply force to the spring 327, and the driving plate 328 and the friction plate 322 are pressed and apply force to increase friction force of the driving plate 328 and the friction plate 322. In order to prevent the driving piece 328, the friction piece 322 and the blocking plate 324 from falling off from the fixed shaft 321, the front end blocking piece 3211 and the rear end blocking piece 3214 are respectively arranged at two ends of the fixed shaft 321 to block, and the front end blocking piece 3211 and the rear end blocking piece 3214 are elastic cards, so that the products are universal in the mechanical field and are not described in detail here.
The adjusting unit 31 is internally provided with a driving ring 311 facing the friction unit 32, the driving ring 311 is provided with driving teeth 312, the driving teeth 312 are meshed with driven teeth 323 on the pressing plate 324, when the adjusting unit 31 is rotated, the driving teeth 312 drive the driven teeth 323 to rotate, the driven teeth 323 enable the pressing plate 324 to integrally press and apply force to a spring 327, and the pressing spring applies force to the driving plate 328 and the friction plate 322 to enable friction force to be increased. Reverse screwing may reduce or cancel the above friction. For accurate adjustment of force, the adjusting unit 31 is provided with a graduated scale 314 opposite to the friction unit, and the graduated scale 314 can display the adjustment amount of the adjusting unit.
Further, as shown in fig. 5, a plurality of pulleys 3331 are disposed on the side of the rotating unit 33 facing the rotating shaft supporting seat 13, the pulleys 3331 are disposed in a ring shape with the central shaft 330 as the axis, and when the rotating unit 33 rotates, the whole sliding is promoted to be smoother by the pulleys 3331.
Still further, the device is provided with a shaft hole 3213 on one side of the fixed shaft 321 facing the rotating unit 33, and the shaft hole 3213 is inserted into the central shaft 330 on the rotating unit 33 to realize axial positioning.
In order to improve the use comfort of the device, the device is characterized in that the top surface and the bottom surface of the swing supporting plate 1 are both provided with flexible materials, and the top surface is required to be directly contacted with a human body, so that the top protection can be realized by adopting a mode of pasting a sponge cushion; the bottom surface of the swinging support plate 1 is provided with a rubber pad or a plastic pad for buffering and protecting the whole bottom surface in a use state.
Through the above detailed description, the whole technical scheme can be finally summarized as follows: the left and right sides of the middle rotating shaft seat 2 are respectively hinged with a swinging support plate 1, the outer side end part of the swinging support plate 1 is provided with a rotating shaft support seat 13, and the rotating shaft support seat 13 is fixedly provided with a tension assembly 3; the tension assembly 3 is internally provided with a rotating wheel 332 and a torsion spring 334, the rotating wheel 332 is provided with a traction rope which extends to the outside, and the torsion spring 334 can realize the integral rebound after external force application and traction; the rotating wheel 332 is also provided with a linkage ring 331, the linkage ring 331 is matched with a resistance component formed by the driving piece 328 and the friction piece 322, and the friction clearance between the driving piece 328 and the friction piece 322 is adjusted by external force application to realize the control of the friction force when the rotating wheel 332 rotates, so that the resistance when the rotating wheel rotates is adjusted. The user steps on the swing support plate 1 under standing, and arms pull the pulling ring 34 to exercise; the user can kneel on the swing support plate 1 with both legs, and exercise is achieved by pulling the pulling ring 34 with the left and right arms simultaneously.
The device has simple structure and ingenious conception, can realize folding and storage, is convenient to use and carry, and is an ideal portable chest expander.
Claims (9)
1. A portable chest expander, its characterized in that: the device comprises a middle rotating shaft seat, wherein a swinging support plate is symmetrically hinged on the middle rotating shaft seat in a left-right mode, a rotating shaft support seat is arranged at the outer side end part of the swinging support plate, and a tension assembly is fixed on the rotating shaft support seat; the tension assembly is internally provided with a rotating wheel and a torsion spring, and the rotating wheel is provided with a traction rope which extends to the outside; the rotating wheel is also provided with a linkage part which is matched with the resistance component; the resistance component comprises a driving piece and a friction piece, and the friction gap between the driving piece and the friction piece is adjusted through external force application so as to realize the control of the friction force when the rotating wheel rotates.
2. A portable chest expander as claimed in claim 1, wherein: the tension assembly at least comprises a rotating unit, a friction unit and an adjusting unit.
3. A portable chest expander as claimed in claim 2, wherein: the rotating wheel and the torsion spring are fixed in the rotating unit, and the torsion spring is provided with a plug-in part which is in plug-in fit with a base shaft on the rotating shaft supporting seat; the linkage part is provided with a splicing groove which is spliced and linked with the driving piece.
4. A portable chest expander as claimed in claim 2, wherein: the resistance component is arranged in the friction unit, a fixed shaft is arranged in the friction unit, a plurality of driving sheets and friction sheets are spliced on the fixed shaft and can rotate on the fixed shaft, and the driving sheets and the friction sheets are arranged at intervals; each driving piece is provided with a plurality of bulges which are spliced and matched with the splicing grooves on the linkage part; the friction unit in still be provided with the baffle, the fixed axle runs through the baffle setting, is provided with a plurality of elastomeric element on the baffle, one side of baffle is the driver blade, its opposite side is provided with the moving part, moving part extrusion elastomeric element to driver blade and friction disc direction application of force.
5. A portable chest expander as claimed in claim 3, wherein: an external thread is arranged on one side of the fixed shaft facing the moving part, the moving part is in threaded fit with the fixed shaft, and a circle of driven teeth is arranged on the moving part.
6. A portable chest expander as claimed in claim 5, wherein: the adjusting unit is internally provided with a circle of driving teeth towards the friction unit, and the driving teeth and the driven teeth are matched to realize meshing driving.
7. A portable chest expander as claimed in claim 4, wherein: the end part of the fixed shaft is provided with a threaded hole, the adjusting unit is provided with a counter bore, and a bolt matched with the threaded hole is arranged in the counter bore to fix the adjusting unit at the end part of the fixed shaft.
8. A portable chest expander as claimed in claim 2, wherein: the rotating unit is provided with a plurality of pulleys or rolling wheels on one side facing the rotating shaft supporting seat, and the pulleys or the rolling balls are annularly arranged with the central shaft as an axle center.
9. A portable chest expander as claimed in claim 2, wherein: the rotary unit is provided with a central groove at one side facing the rotary shaft supporting seat, and the torsion spring is arranged in the central groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222722669.4U CN219517686U (en) | 2022-10-17 | 2022-10-17 | Portable chest expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222722669.4U CN219517686U (en) | 2022-10-17 | 2022-10-17 | Portable chest expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219517686U true CN219517686U (en) | 2023-08-15 |
Family
ID=87634746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222722669.4U Active CN219517686U (en) | 2022-10-17 | 2022-10-17 | Portable chest expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219517686U (en) |
-
2022
- 2022-10-17 CN CN202222722669.4U patent/CN219517686U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |