CN218187689U

CN218187689U - Exercise device

Info

Publication number: CN218187689U
Application number: CN202222680563.2U
Authority: CN
Inventors: 徐剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-01-03
Anticipated expiration: 2032-10-11

Abstract

The utility model provides an exercise device, including two resistance arms that can open and shut and the resistance subassembly of connection between two resistance arms, the resistance subassembly includes the resistance axle, first elastic component, the second elastic component, first connecting piece and second connecting piece all rotationally set up epaxially at the resistance, first connecting piece and second connecting piece are connected with two resistance arms respectively, first elastic component sets up between first connecting piece and resistance axle, the second elastic component sets up between second connecting piece and resistance axle, two resistance arms coincide the in-process, first connecting piece and the relative resistance axle rotation of second connecting piece, first elastic component and second elastic component take place deformation and provide and hinder this pivoted resistance, need not pneumatic cylinder or gravity spring and other drive mechanism, thereby it is simpler to make the resistance provide the mechanism, weight is also lighter, occupation space is littleer, simplify production installation process, and production cost is reduced.

Description

Exercise device

Technical Field

The utility model relates to an exercise device.

Background

Along with the improvement of living standard of people, the enthusiasm of national fitness keeps rising, various fitness equipment are continuously updated, and arm strength exerciser is the fitness equipment aiming at the large-scale market demand of local fitness equipment of arms.

The traditional arm strength device generally comprises a rocker arm and a spring or a hydraulic cylinder, and a patent with the publication number of CN212998160U discloses an arm strength device which comprises a mounting seat, wherein the mounting seat is provided with the hydraulic cylinder and two groups of rocker arms, a piston rod is arranged in the hydraulic cylinder, a transmission connecting rod is arranged between the rocker arms and the piston rod, the mounting seat, the rocker arms, the transmission connecting rod and the piston rod form a crank-slider mechanism, the hydraulic cylinder comprises an adjusting piece and a cylinder body, and the adjusting piece adjusts resistance force applied in the movement process of the piston rod in the relative rotation process of the cylinder body and the adjusting piece. The prior art arm exerciser as described in this patent still has drawbacks: the resistance providing mechanism formed by the hydraulic cylinder and the crank sliding mechanism to provide resistance during exercise is more complex in structure, heavier in weight and larger in occupied space, which makes the production process of the whole product more complicated and more costly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an exercise device, the resistance subassembly structure is more simple, and weight is lighter, and occupation space is littleer, simplifies production installation procedure, reduction in production cost.

The utility model discloses a following technical scheme realizes:

the utility model provides an exercise device, including two resistance arms that can open and shut and the resistance subassembly of connection between two resistance arms, the resistance subassembly includes the resistance axle, first elastic component, the second elastic component, first connecting piece and second connecting piece all rotationally set up epaxially at the resistance, first connecting piece and second connecting piece are connected with two resistance arms respectively, first elastic component sets up between first connecting piece and resistance axle, the second elastic component sets up between second connecting piece and resistance axle, two resistance arms meet the in-process mutually, first connecting piece and the relative resistance axle rotation of second connecting piece, first elastic component and second elastic component take place deformation and provide and hinder this pivoted resistance, need not pneumatic cylinder or gravity spring and other drive mechanism, thereby it is simpler to make the resistance provide the mechanism, weight is also lighter, occupation space is littleer, simplify production installation process, and production cost is reduced, and two resistance arms can expand to roughly horizontal position, also can be convenient for combine in order to realize other exercise functions with other parts.

Further, first elastic component and second elastic component are connected with the resistance axle through two connecting axles respectively, two connecting axles set up at resistance axle both ends, first elastic component and second elastic component all include the inner circle, a plurality of deformation sections and a plurality of linkage segment, a plurality of deformation section one end and inner circle connection and circumference are arranged, the linkage segment sets up between two adjacent deformation section other ends, the fixed cover of inner circle is established at the resistance axle, first connecting piece and second connecting piece all are provided with a plurality of supporting parts, the supporting part is located between two deformation sections and pastes and lean on the corresponding linkage segment inner wall, when two resistance arms are fashionable mutually, first connecting piece and second connecting piece do the rotation of opposite direction relative to the resistance axle, the inner circle and the outer lane of first elastic component rotate relatively, then do the relative rotation of another direction with the outer lane of second elastic component, thereby the tensile deformation of the deformation section emergence different directions of tractive first elastic component and second elastic component, and then provide resistance that resistance axle and two resistance arms rotated relatively.

Furthermore, the resistance axle has the first through hole that extends along its length direction, the connecting axle has the second through hole that extends along its length direction, two the connecting axle respectively with resistance axle both ends plug-in connection, fixing bolt passes first through hole and two second through holes in order to be fixed with two connecting axles and resistance axle, and the fixing process is convenient simple.

Furthermore, the cross section of the first through hole is non-circular, and one end of the connecting shaft is provided with an extending section which is matched with the first through hole and is inserted into the first through hole, so that the relative rotation of the connecting shaft and the resistance shaft in the rotation process can be avoided.

Further, first connecting piece is including setting up first pivot portion and the first installation department on a resistance arm, and first pivot portion rotates the cover and establishes on the resistance is epaxial, first installation department and first pivot portion fixed connection, first elastic component sets up on first installation department, and/or, the second connecting piece is including setting up second pivot portion and the second installation department on another resistance arm, and second pivot portion rotates the cover and establishes on the resistance is epaxial, second installation department and second pivot portion fixed connection, the second elastic component sets up on the second installation department, makes things convenient for the installation of first elastic component and second elastic component to and the rotation of resistance arm and resistance axle is connected.

Furthermore, first connecting piece still includes the third pivot portion that sets up on a resistance arm, and third pivot portion rotates the cover and establishes at the resistance epaxial and lie in between first pivot portion and the second pivot portion, the second connecting piece still includes the fourth pivot portion that sets up on another resistance arm, and fourth pivot portion rotates the cover and establishes at the resistance epaxial and lie in between first pivot portion and the third pivot portion, and the structure is more reasonable, makes the power distribution more balanced, prolongs the life of taking exercise device.

Further, resistance arm includes the upper portion and the lower part of relative lock joint, first pivot portion sets up the upper portion at a resistance arm, first installation department sets up the lower part at a resistance arm, second pivot portion sets up the upper portion at another resistance arm, the second installation department sets up the lower part at another resistance arm, and the upper portion and the lower part lock joint back of a resistance arm, first installation department pass through the bolt fastening on first pivot portion, and the upper portion and the lower part lock joint back of another resistance arm, second installation department pass through the bolt fastening on second pivot portion, make things convenient for the installation of resistance arm, also make the structure more reasonable.

Further, resistance arm is arc platelike structure, conveniently combines with dull and stereotyped supporting pad and/or shank supporting seat to realize other exercise functions.

Furthermore, resistance arm free end is provided with holds the ring, supplies the user to hold the resistance arm, is more convenient for carry out the arm strength exercise.

Furthermore, the resistance component further comprises a shell which is sleeved on the resistance component, and a first abdicating hole which is used for abdicating the first connecting piece and the second connecting piece is formed in the shell, so that the whole structure is more stable.

Further, establish including the cover casing on the resistance subassembly, the casing has two end plates, has seted up the confession on the end plate the through-hole that the connecting axle other end was worn out, the connecting axle other end have with stretch out the recess that the section matches, when needs, can insert this recess with the section of stretching out of another connecting axle in to increase more elastic component, thereby increase the resistance size that can provide, make exercise device application scope wider.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is another schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the exploded structure of the present invention.

Fig. 4 is an enlarged view of a portion a of fig. 3.

Fig. 5 is a schematic sectional view of the present invention.

Fig. 6 is another schematic sectional view of the present invention.

Fig. 7 is a schematic structural view of the elastic member and the first mounting portion of the present invention.

Fig. 8 is an exploded schematic view of the resistance arm of the present invention.

Fig. 9 is a schematic structural diagram of the housing of the present invention.

Fig. 10 is a schematic structural view of the support portion of the present invention.

Wherein, 1, a resistance arm; 11. an inner side surface; 12. an outer side surface; 13. a raised ring; 14. mounting grooves; 15. a first mounting groove; 16. an installation part; 17. a second mounting groove; 18. an extension portion; 19. an upper portion; 191. feeding a pipe; 110. a lower portion; 1101. an insertion hole; 2. a resistance assembly; 21. a resistance shaft; 211. a first through hole; 22. a first elastic member; 221. an inner ring; 222. a deformation section; 223. a connecting section; 23. a second elastic member; 24. a first connecting member; 241. a first pivot portion; 242. a third pivot portion; 243. a first mounting portion; 25. a second connecting member; 251. a second pivot portion; 252. a fourth pivot portion; 253. a second mounting portion; 254. a second support portion; 255. a third reinforcing rib; 26. a housing; 261. an upper shell; 2611. a flat plate; 2612. an arc-shaped plate; 2613. a second abdicating hole; 262. a lower case; 2621. a third abdicating hole; 263. an end plate; 264. a through hole; 265. a first abdicating hole; 27. a connecting shaft; 272. a protruding section; 273. a groove; 28. fixing the bolt; 3. a first backing plate; 4. a second backing plate; 5. a leg support base; 51. a support portion; 511. a top surface; 512. a side surface; 513. a first reinforcing rib; 514. mounting the cylinder; 515. a second reinforcing rib; 52. a cushion pad; 61. mounting holes; 62. positioning a groove; 63. a rotating shaft; 64. a fixed block; 7. a hand-held ring; 8. a display screen.

Detailed Description

As shown in fig. 1 to 10, the exercise device includes two resistance arms 1 that can open and shut, resistance assembly 2, two first backing plates 3, two second backing plates 4, two leg supporting bases 5, two hand holding rings 7, casing 26 and display screen 8, resistance assembly 2 connects between two resistance arms 1 in order to provide the resistance at two resistance arm 1 in-process that coincide, resistance arm 1 is for having the arc platelike structure of certain width, two first backing plates 3 set up respectively at the medial surface 11 of two resistance arms 1, two second backing plates 4 also set up respectively at the medial surface 11 of two resistance arms 1, in order to supply the user to carry out dull and stereotyped support when two resistance arms 1 open, first backing plate 3 and second backing plate 4 on the same resistance arm 1 arrange along resistance arm 1 length direction interval, two leg supporting bases 5 set up respectively at the lateral surface 12 of two resistance arms 1, user's shank makes two resistance arms 1 open and shut through leg supporting base 5, hand holding ring 7 then sets up the free end at resistance arm 1, in order to supply to hold hand holding resistance arm 1 when conveniently taking exercise.

In this embodiment, the end surface of the second pad 4 on the same resistance arm 1 is higher than the end surface of the first pad 3. The medial surface 11 of resistance arm 1 outwards caves in and forms the first mounting groove 15 of installation first backing plate 3, and the part that resistance arm 1 medial surface 512 did not set up first mounting groove 15 inwards heaves and forms installation portion 16, and the 16 terminal surfaces of installation portion outwards caves in and forms the second mounting groove 17 of installation second backing plate 4. The first shim plate 3 and the second shim plate 4 may be mounted in the first mounting groove 15 and the second mounting groove 17 by gluing or other means.

Resistance subassembly 2 includes resistance axle 21, first elastic component 22, second elastic component 23, first connecting piece 24, second connecting piece 25 and two connecting axles 27, first connecting piece 24 and second connecting piece 25 all rotationally set up on resistance axle 21, first connecting piece 24 and second connecting piece 25 are connected with two resistance arms 1 respectively, first elastic component 22 sets up between first connecting piece 24 and resistance axle 21, second elastic component 23 sets up between second connecting piece 25 and resistance axle 21, two resistance arms 1 meet the in-process mutually, first connecting piece 24 and the relative resistance axle 21 of second connecting piece 25 rotate, first elastic component 22 and second elastic component 23 provide respectively and hinder this pivoted resistance.

Resistance axle 21 has the first through-hole 211 that extends along its length direction, connecting axle 27 has the second through-hole that extends along its length direction, first through-hole 211 cross section is the hexagon, connecting axle 27 one end has the cross section for the hexagon and with the section 272 that stretches out that first through-hole 211 matches, the section 272 that stretches out of two connecting axles 27 inserts from the both ends of first through-hole 211 respectively, so that two connecting axles 27 are connected with the grafting of resistance axle 21 both ends respectively, fixing bolt 28 passes behind the second through-hole of first through-hole 211 and two connecting axles 27 and locks in the nut that corresponds, in order to fix two connecting axles 27 with resistance axle 21. The first elastic member 22 and the second elastic member 23 are connected to the resistance shaft 21 through two connecting shafts 27, respectively. First elastic component 22 and second elastic component 23 are the same in structure, all include inner circle 221, a plurality of deformation sections 222 and a plurality of linkage segment 223, a plurality of deformation sections 222 one end are connected and the circumference is arranged with inner circle 221, then be provided with a linkage segment 223 between the two adjacent deformation sections 222 other ends, the fixed cover of inner circle 221 is established on resistance axle 21, first connecting piece 24 and second connecting piece 25 all are provided with a plurality of second supporting parts 254, second supporting part 254 is located between two deformation sections 222 and pastes and lean on the corresponding linkage segment 223 inner wall, for strengthening second supporting part 254 intensity, second supporting part 254 inboard still is provided with third strengthening rib 255. The inner ring 221, the deformation section 222 and the connection section 223 are integrally formed of an elastic material. In the present embodiment, the deformation segments 222 are straight segments arranged obliquely, and the connecting segments 223 are arc segments, each of which forms a circle. In order to avoid slipping of the inner ring 221 and the connecting shaft 27 in the deformation process, a plurality of recessed limiting grooves are arranged on the connecting shaft 27 at intervals, the connecting shaft 27 is placed into a forming die of the first elastic part 22, then elastic materials are injected, after the elastic materials are solidified, the connecting shaft 27 can be fixedly connected with the inner ring 221 of the first elastic part 22, the groove bottom of each limiting groove is arc-shaped, shearing of the inner ring 221 can be avoided, after forming, a limiting strip corresponding to each limiting groove is formed on the inner side of the inner ring 221, and the inner ring of the second elastic part 23 is fixedly sleeved on the other connecting shaft 27 in the same mode.

The first connecting member 24 includes a first pivot portion 241, a third pivot portion 242 and a first mounting portion 243 disposed on one resistance arm 1, the first pivot portion 241 and the third pivot portion 242 are rotatably sleeved on the resistance shaft 21, the first mounting portion 243 is fixedly connected with the first pivot portion 241 through a bolt, the first elastic member 22 is disposed on the first mounting portion 243, the second connecting member 25 includes a second pivot portion 251, a fourth pivot portion 252 and a second mounting portion 253 disposed on the other resistance arm 1, the second pivot portion 251 and the fourth pivot portion 252 are rotatably sleeved on the resistance shaft 21, the second mounting portion 253 is fixedly connected with the second pivot portion 251 through a bolt, the second elastic member 23 is disposed on the second mounting portion 253, the third pivot portion 242 is disposed between the first pivot portion 241 and the second pivot portion 251, and the fourth pivot portion 252 is disposed between the first pivot portion 241 and the third pivot portion 242.

In this embodiment, the resistance arm 1 includes an upper portion 19 and a lower portion 110, wherein an upper tube 191 is disposed at a lower end of the upper portion 19, a lower tube into which the upper tube 191 is inserted is disposed at an upper end of the lower portion 110, an internal thread is disposed inside the upper tube 191, an insertion hole 1101 corresponding to the lower tube is disposed at the lower portion 110, and after the upper tube 191 is inserted into the lower tube, a bolt is inserted into the insertion hole 1101 and locked inside the upper tube 191, thereby achieving the fastening of the upper portion 19 and the lower portion 110. A first mounting part 243 and a third pivoting part 242 are arranged at intervals on the upper part 19 of a resistance arm 1, two first pivoting parts 241 are arranged at intervals on the lower part 110 of the resistance arm 1, after the upper part 19 and the lower part 110 are buckled, the first mounting part 243 is fixedly connected with one of the first pivoting parts 241, and the other first pivoting part 241 is fixedly connected with the third pivoting part 242. The upper part 19 of the other resistance arm 1 is provided with a second mounting part 253 and a fourth pivot part 252 at intervals, the lower part 110 of the resistance arm 1 is provided with two second pivot parts 251 at intervals, after the upper part 19 and the lower part 110 of the resistance arm 1 are fastened, the second mounting part 253 is fixedly connected with one of the second pivot parts 251, and the other second pivot part 251 is connected with the fourth pivot part 252.

The housing 26 is sleeved on the resistance assembly 2, and in order to enable the first connecting piece 24 and the second connecting piece 25 to rotate relative to the resistance shaft 21, a first avoiding hole 265 for avoiding the first connecting piece 24 and the second connecting piece 25 is formed in the housing 26. The housing 26 has two end plates 263, a through hole 264 for the other end of the connecting shaft 27 to pass through is formed on the end plates 263, the other end of the connecting shaft 27 has a non-circular recess 273 matched with the protruding end, and when necessary, the protruding section 272 of the other connecting shaft 27 can be inserted into the recess 273 to increase more elastic members, thereby increasing the resistance provided. In this embodiment, a connecting shaft 27 extends out of one end of the housing 26, an electrical space is formed at the other end of the housing 26, the display screen 8 is disposed at an end of the electrical space, and a counting module is disposed in the electrical space, wherein the counting module, the counting module and the display screen 8 are connected in the prior art.

In this embodiment, the housing 26 includes an upper housing 261 and a lower housing 261 that are fastened to each other, the upper housing 261 includes a flat plate 2611 and arc plates 2612 disposed on two sides of the flat plate 2611, a second yielding hole 2613 for passing through the first connector 24 and the second connector 25 is disposed on the arc plate 2612, a third yielding hole 2621 corresponding to the second yielding hole 2613 is disposed on the lower housing 261, the second yielding hole 2613 and the corresponding third yielding hole 2621 form a first yielding hole 265, the end portions of the two resistance arms 1 are both provided with extension portions 18, the inner side surfaces of the extension portions 18 are arc surfaces matched with the arc plate 2612, the end portions of the extension portions 18 abut against the edge of the flat plate 2611, and the two arc plates 2612 are respectively embedded between the arc surfaces and the first connector 24 and between the arc surfaces and the second connector 25.

In another embodiment, the resistance assembly 2 includes a torsion spring having two ends respectively connected to the two resistance arms 1, and the specific connection structure between the torsion spring and the two resistance arms is the prior art.

In this embodiment, the edge of the contact surface of the leg support base 5 with the resistance arm 1 does not exceed the edge of the outer side surface 12 of the resistance arm 1, and the top surface 511 of the support base is recessed downward to be adapted to the leg shape. Specifically, the leg support seat 5 includes a support portion 51 and a cushion 52, the support portion 51 is in a frustum shape, and includes a top surface 511, a side surface 512 disposed around the top surface 511, a first reinforcing rib 513 disposed between the top surface 511 and the side surface 512, and a mounting cylinder 514 disposed between two adjacent first reinforcing ribs 513, a second reinforcing rib 515 is disposed between the mounting cylinder 514 and two adjacent first reinforcing ribs 513, the lower end of the support portion 51 is disposed on the outer side surface 12 of the resistance arm 1, a recess is formed on the top surface 511 of the support portion 51, and the cushion 52 is disposed on the top surface 511 of the support portion 51 and matches with the recess.

Be provided with slewing mechanism between resistance arm 1 and the supporting part 51, slewing mechanism is including setting up the mounting hole 61 at the lateral surface 12 of resistance arm 1, a plurality of constant head tanks 62 that the circumference interval set up, the setting is at supporting part 51 top surface 511 lower extreme and the pivot 63 that passes mounting hole 61 downwards, fixed block 64, the installation section of thick bamboo 514 that sets up on supporting part 51 and the elastic pin of setting on installation section of thick bamboo 514, pivot 63 passes the mounting hole 61 back downwards, fixed block 64 locks at pivot 63 lower extreme, when supporting part 51 rotates and makes the elastic pin be located constant head tank 62 top, the elastic pin pops out downwards and blocks in constant head tank 62. Specifically, the outer side surface 512 of the resistance arm 1 is provided with a protruding ring 13, the protruding ring 13 and the outer side surface 12 of the resistance arm 1 form a mounting groove 14 matched with the supporting part 51, and the mounting hole 61 is arranged at the bottom of the mounting groove 14.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. An exercise device characterized by: including two resistance arms (1) that can open and shut and resistance subassembly (2) of connection between two resistance arms (1), resistance subassembly (2) are including resistance axle (21), first elastic component (22), second elastic component (23), first connecting piece (24) and second connecting piece (25) all rotationally set up on resistance axle (21), first connecting piece (24) and second connecting piece (25) are connected with two resistance arms (1) respectively, first elastic component (22) set up between first connecting piece (24) and resistance axle (21), second elastic component (23) set up between second connecting piece (25) and resistance axle (21), two resistance arms (1) in-process that coincide, first connecting piece (24) and second connecting piece (25) are relative resistance axle (21) and are rotated, first elastic component (22) and second elastic component (23) provide the resistance that hinders this pivoted respectively.

2. An exercise device as claimed in claim 1, wherein: first elastic component (22) and second elastic component (23) are connected with resistance axle (21) through two connecting axles (27) respectively, two connecting axles (27) set up at resistance axle (21) both ends, first elastic component (22) and second elastic component (23) all include inner circle (221), a plurality of deformation sections (222) and a plurality of linkage segment (223), a plurality of deformation sections (222) one end is connected and the circumference is arranged with inner circle (221), linkage segment (223) set up between two adjacent deformation sections (222) other end, the fixed cover of inner circle (221) is established on resistance axle (21), first connecting piece (24) and second connecting piece (25) all are provided with a plurality of supporting parts (254), supporting part (254) are located between two deformation sections (222) and paste and lean on corresponding linkage segment (223) inner wall.

3. An exercise device as claimed in claim 2, wherein: the resistance shaft (21) is provided with a first through hole (211) extending along the length direction of the resistance shaft, the connecting shaft (27) is provided with a second through hole extending along the length direction of the connection shaft, the two connecting shafts (27) are respectively connected with two ends of the resistance shaft (21) in an inserting mode, and the fixing bolt (28) penetrates through the first through hole (211) and the two second through holes to fix the two connecting shafts (27) and the resistance shaft (21).

4. An exercise device as claimed in claim 3, wherein: the first through hole (211) is non-circular in cross section, and one end of the connecting shaft (27) has a protruding section (272) which is matched with the first through hole (211) to be inserted therein.

5. An exercise apparatus as claimed in claim 1 or 2 or 3 or 4, wherein: first connecting piece (24) are including setting up first pivot portion (241) and first installation department (243) on a resistance arm (1), and first pivot portion (241) rotate the cover and establish on resistance axle (21), first installation department (243) and first pivot portion (241) fixed connection, first elastic component (22) set up on first installation department (243), and/or, second connecting piece (25) are including setting up second pivot portion (251) and second installation department (253) on another resistance arm (1), and second pivot portion (251) rotate the cover and establish on resistance axle (21), second installation department (253) and second pivot portion (251) fixed connection, second elastic component (23) set up on second installation department (253).

6. An exercise device as claimed in claim 5, wherein: the first connecting piece (24) further comprises a third pivoting portion (242) arranged on one resistance arm (1), the third pivoting portion (242) is rotatably sleeved on the resistance shaft (21) and located between the first pivoting portion (241) and the second pivoting portion (251), the second connecting piece (25) further comprises a fourth pivoting portion (252) arranged on the other resistance arm (1), and the fourth pivoting portion (252) is rotatably sleeved on the resistance shaft (21) and located between the first pivoting portion (241) and the third pivoting portion (242).

7. An exercise device as claimed in claim 5, wherein: resistance arm (1) is including the upper portion and the lower part of relative lock joint, first pivot portion (241) set up the upper portion at a resistance arm (1), first installation department (243) set up the lower part at a resistance arm (1), second pivot portion (251) set up the upper portion at another resistance arm (1), second installation department (253) set up the lower part at another resistance arm (1), after the upper portion and the lower part lock joint of a resistance arm (1), first installation department (243) pass through the bolt fastening on first pivot portion (241), after the upper portion and the lower part lock joint of another resistance arm (1), second installation department (253) pass through the bolt fastening on second pivot portion (251).

8. An exercise apparatus as claimed in claim 1 or 2 or 3 or 4, wherein: the resistance arm (1) is of an arc-shaped plate-shaped structure.

9. An exercise apparatus as claimed in claim 1 or 2 or 3 or 4, wherein: the free end of the resistance arm (1) is provided with a hand-holding ring (7).

10. An exercise apparatus as claimed in claim 1 or 2 or 3 or 4, wherein: still establish including the cover casing (26) on resistance subassembly (2), be provided with the first hole of stepping down (265) of dodging first connecting piece (24) and second connecting piece (25) on casing (26).

11. An exercise device as claimed in claim 4, wherein: still establish including the cover casing (26) on resistance subassembly (2), casing (26) have two end plates, offer the confession on the end plate the through-hole that the connecting axle (27) other end was worn out, connecting axle (27) other end have with stretch out recess (273) that section (272) matches.