Wrist developer

Abstract

A hand-muscle developer comprises a first holding rod, a second holding rod and a resistance mechanism, the upper end of the first holding rod and the upper end of the second holding rod are rotatably connected in a relative opening and closing mode, the hand-muscle developer is characterized in that the resistance mechanism comprises an elastic piece and a pull rope, the first holding rod is of a hollow structure, and the elastic piece is arranged in the first holding rod; one end of the pull rope is connected with the elastic piece, the other end of the pull rope is connected with the second holding rod, in the rotating closing process of the first holding rod and the second holding rod, the pull rope pulls the elastic piece to provide closing resistance of the first holding rod and the second holding rod, the elastic piece is arranged in the first holding rod, the occupied space of the wrist developer can be reduced, and the space utilization rate is increased; and the elastic piece is arranged inside, so that the elastic piece can be prevented from accidentally injuring the user, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to a hand gripper. Background Art

[0002] Chinese patent document CN104853815A discloses a gripper, comprising a left arm, a right arm and an elastic device, wherein the upper parts of the left arm and the right arm are connected to each other through a rotation axis to rotate around the rotation axis, thereby approaching each other and being spaced apart from each other, and the lower parts of the left arm and the right arm can be grasped by the hand of the user, and the elastic device is used to provide elastic force in a direction that hinders the left arm and the right arm from approaching each other. The elastic device comprises spring components symmetrically mounted on the front and rear sides of the upper parts of the left arm and the right arm, respectively, each of the front spring component and the rear spring component comprises a compression spring, a right spring support part and a left spring support part, and the compression spring is arranged between the right spring support part and the left spring support part to support the compression spring in a compressible manner; each of the left spring support part and the right spring support part of the front spring component and the rear spring component is connected to each other through a left spring component support shaft and a right spring component support shaft, and the upper part of the left arm or the upper part of the right arm is arranged therebetween, and is operated in an integrated manner.

[0003] However, the above solution arranges the elastic device outside the handgrip, which increases the space occupied by the handgrip and has poor aesthetics. In addition, when the exerciser uses the handgrip, the hand may be pinched by the spring component, which has low safety. Utility Model Content

[0004] The purpose of the utility model is to provide a hand gripper which is beautiful, compact and highly safe.

[0005] The purpose of the utility model is achieved through the following technologies:

[0006] A handgrip includes a first gripping rod, a second gripping rod and a resistance mechanism, wherein the upper ends of the first gripping rod and the second gripping rod are rotatably connected to each other so as to open and close relative to each other, and wherein the resistance mechanism includes an elastic member and a pull rope, the first gripping rod is a hollow structure, the elastic member is arranged in the first gripping rod, one end of the pull rope is connected to the elastic member and the other end is connected to the second gripping rod, during the process of the first gripping rod and the second gripping rod rotating and closing, the pull rope pulls the elastic member to provide resistance for the first gripping rod and the second gripping rod to close, the elastic member is arranged inside the first gripping rod to reduce the space occupied by the handgrip, thereby improving space utilization, and the elastic member is arranged inside to prevent the elastic member from accidentally injuring a user, thereby improving safety.

[0007] The elastic member is a coil spring, one end of which is connected to the first holding rod, and the other end of which is connected to the pull rope.

[0008] The first holding rod includes a hollow body and an adjusting mechanism, the adjusting mechanism includes a nut and a screw, the nut is fixedly arranged in the hollow body, the screw is threadedly matched with the nut, one end of the screw is rotatably connected to one end of the coil spring, and the screw can be raised and lowered in the hollow body by rotating the screw to adjust the stretching amount of the coil spring, thereby exercising and adjusting the resistance size.

[0009] The screw rod comprises a transition section, a threaded section and a connecting section which are connected in sequence. The transition section is two cylinders connected to each other. The two cylinders are respectively a large diameter section arranged on the outside and a small diameter section arranged on the inside. The diameter of the large diameter section is larger than that of the small diameter section. One end of the coil spring surrounds the small diameter section and is restricted from disengaging by the large diameter section, so as to realize the rotational connection between the coil spring and the screw rod. An external thread extending along its length direction is formed on the outer surface of the threaded section and cooperates with the nut thread. The cross-section of the connecting section is non-circular. The operating knob is formed with a non-circular hole for inserting the connecting section. In this way, the threaded section of the screw rod can cooperate with the nut thread by rotating the operating knob, thereby lifting and lowering the screw rod to adjust the stretching amount of the spring. The connecting section can move up and down in the non-circular hole, and the operating knob does not need to move up and down with the screw rod, so it is not easy to be damaged.

[0010] A first adapter portion is provided at the upper end of the first holding rod, and a second adapter portion is provided at the upper end of the second holding rod. The first adapter portion and the second adapter portion are rotatably connected to each other through an adapter shaft. A wear-resistant sleeve is provided on the first adapter portion or the second adapter portion. One end of the pull rope is connected to the elastic member, and the other end is connected to the second holding rod after passing through the wear-resistant sleeve. The wear-resistant sleeve is coaxially arranged with the adapter shaft. The provision of the adapter shaft can make the rotation of the first adapter portion and the second adapter portion smoother, and the provision of the wear-resistant sleeve can prevent the pull rope from wearing and increase its service life.

[0011] The wear-resistant sleeve is fixed on the first adapter part or the second adapter part by in-mold injection molding. An outwardly extending annular limiting edge is formed at one end of the wear-resistant sleeve located in the first adapter part or the second adapter part. The in-mold injection molding method can facilitate the production of the product. The wear-resistant sleeve can be better connected to the first adapter part or the second adapter part, and the formation of the annular limiting edge can further strengthen the connection strength between the wear-resistant sleeve and the first adapter part or the second adapter part.

[0012] The adapter shaft includes an adapter and a bolt, the adapter includes a limiting cap and a rod body, one end of the rod body is connected to the limiting cap, and the other end passes through the first adapter part and the second adapter part, and is formed with a screw hole extending along its length direction, the bolt cooperates with the screw hole, the first adapter part and the second adapter part are formed with a first mounting hole and a second mounting hole for the rod body to pass through, the rod body passes through the first mounting hole and the second mounting hole, and the bolt is then threadedly cooperated with the screw hole of the rod body to realize the rotational connection between the first adapter part and the second adapter part.

[0013] The first adapter part or the second adapter part is formed with a circular positioning boss, and the positioning boss is sleeved in the wear-resistant sleeve. The positioning boss cooperates with the wear-resistant sleeve to play a positioning role, so that the product can be installed better.

[0014] A counter and a control button are arranged on the first adapter part or the second adapter part.

[0015] The first gripping rod and the second gripping rod each include two halves that are interlocked, which can facilitate the installation of internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 It is a three-dimensional diagram from another perspective of the utility model.

[0018] Figure 3 It is a side view of the utility model.

[0019] Figure 4 for Figure 3 Section view along AA direction.

[0020] Figure 5 It is a front view of the utility model.

[0021] Figure 6 for Figure 5 A partial enlarged view of the BB section view.

[0022] Figure 7 This is an exploded view of the components of the present utility model.

[0023] Figure 8 This is a component exploded view from another perspective of the present invention.

[0024] Fig. 9 This is an exploded view of the components of the resistance mechanism and the adjustment mechanism of the utility model. DETAILED DESCRIPTION

[0025] Reference Figures 1 to 9As shown, a hand gripper comprises a first gripping rod 1, a second gripping rod 2 and a resistance mechanism, wherein the upper ends of the first gripping rod 1 and the second gripping rod 2 can be rotatably connected to each other in an opening and closing manner, a first adapter portion 13 is provided at the upper end of the first gripping rod 1, and the first adapter portion 13 and the first gripping rod 1 are integrally injection-molded, a second adapter portion 23 is provided at the upper end of the second gripping rod 2, and the second adapter portion 23 and the second gripping rod 2 are integrally injection-molded, the first adapter portion 13 and the second adapter portion 23 are rotatably connected to each other through an adapter shaft, and the first adapter portion 13 and the second adapter portion 23 are The circular structure is more suitable for rotation. The first gripping rod 1 includes a first upper shell 11 and a first lower shell 12 that are interlocked, and the second gripping rod 2 includes a second upper shell 21 and a second lower shell 22 that are interlocked. This can facilitate the rapid assembly of the product. The resistance mechanism can be first installed on the first lower shell 12 and the second lower shell 22, and then the first upper shell 11 and the second upper shell 21 are covered. The first upper shell 11 and the first lower shell 12 and the second upper shell 21 and the second lower shell 22 are detachably connected through a snap-on structure. The adapter shaft includes an adapter 62 and a bolt 61. The adapter shaft can be disassembled to repair or replace the resistance mechanism or other internal components. The buckle structure is a known prior art and will not be described in detail here. The adapter shaft includes an adapter 62 and a bolt 61. The setting of the adapter shaft can make the rotation of the first adapter part 13 and the second adapter part 23 smoother. The adapter 62 includes a limit cap 621 and a rod body 622. The limit cap 621 and the rod body 622 are integrally formed. One end of the rod body 622 is connected to the limit cap 621, and the other end passes through the first adapter part 13 and the second adapter part 23, and the rod body 622 is formed along its length. The extended screw hole 623, the bolt 61 cooperates with the screw hole 623, the first adapter part 13 and the second adapter part 23 are formed with a first mounting hole and a second mounting hole for the rod body 622 to pass through, the rod body 622 passes through the second mounting hole and the first mounting hole in sequence from one end of the second adapter part 23, and the bolt 61 is then inserted into the screw hole 623 of the rod body 622 from one end of the first limiting part and threadedly cooperates with the screw hole 623 to realize the rotational connection between the first adapter part 13 and the second adapter part 23, and a wear-resistant sleeve 5 is provided on the first adapter part 13, and the wear-resistant sleeve 5 is coaxially arranged with the adapter shaft.

[0026] The resistance mechanism includes an elastic member 31 and a pull rope 32. The first gripping rod 1 is a hollow structure. The elastic member 31 is arranged in the first gripping rod 1. One end of the pull rope 32 is connected to the elastic member 31, and the other end is connected to the second gripping rod 2 after passing through a wear-resistant sleeve 5. The wear-resistant sleeve 5 can prevent the pull rope 32 from rubbing against the first adapter 62 and the second adapter 62, thereby increasing the service life of the pull rope 32. A connecting pin 24 is arranged in the second gripping rod 2. Both ends of the pull rope 32 have connecting rings 321. The connecting ring 321 at one end of the pull rope 32 is sleeved on the upper end of the elastic member 31, and the connecting ring 321 at the other end is sleeved on the connecting pin 24. The elastic member 31 is a coil spring. During the rotation and closing process of the first gripping rod 1 and the second gripping rod 2, the pull rope 32 pulls the coil spring to provide resistance to the closing of the first gripping rod 1 and the second gripping rod 2. Arranging the coil spring inside the first gripping rod 1 can reduce the space occupied by the gripper and improve space utilization. Arranging the coil spring inside can also prevent the coil spring from accidentally injuring the user, thereby improving safety.

[0027] The second adapter part 23 is formed with a circular positioning boss 233, the diameter of which is slightly smaller than the diameter of the wear-resistant sleeve 5. When the second adapter part 23 is connected to the first adapter part 13, the positioning boss 233 is sleeved in the wear-resistant sleeve 5. The positioning boss 233 cooperates with the wear-resistant sleeve 5 to play a positioning role, so that the product can be better installed.

[0028] The first holding rod 1 includes a hollow body and an adjusting mechanism. The first upper shell 11 and the first lower shell 12 are spliced ​​to form a hollow body. The adjusting mechanism includes a nut 42 and a screw 41. An annular mounting groove 121 is formed in the hollow body. The nut 42 is fixedly arranged in the annular mounting groove 121. The screw 41 and the nut 42 are threadedly matched. One end of the screw 41 is rotatably connected to one end of the coil spring. By rotating the screw 41, the screw 41 can be raised and lowered in the hollow body to adjust the stretching amount of the coil spring, thereby exercising and adjusting the resistance size.

[0029] The screw rod 41 further comprises an operating knob 43 rotatably arranged at the lower end of the hollow main body. The screw rod 41 comprises a transition section 411, a threaded section 412 and a connecting section 413 which are connected in sequence. The transition section 411, the threaded section 412 and the connecting section 413 are integrally formed. The transition section 411 is two cylinders connected to each other. The two cylinders are respectively a large diameter section arranged on the outside and a small diameter section arranged on the inside. The diameter of the large diameter section is larger than that of the small diameter section. One end of the coil spring surrounds the small diameter section and is restricted from being separated by the large diameter section, so that the coil spring is rotatably connected to the screw rod 41. The outer surface of the threaded section 412 is formed with an external thread extending along its length direction and threadedly matched with the nut 42. The cross section of the connecting section 413 is square. The operating knob 43 is formed with a square hole 433 for inserting the connecting section 413. In this way, the thread of the screw rod 41 can be rotated by rotating the operating knob 43. The segment 412 is threadedly matched with the nut 42, so as to be raised and lowered to adjust the stretching amount of the spring, and the connecting segment 413 can move up and down in the square hole 433 and is not easy to be damaged. The upper segment of the operating knob 43 is a cylinder, and the end of the cylinder extends outward to form an annular positioning edge 434. An annular positioning groove 122 that cooperates with the positioning edge 434 is formed in the hollow body, and the positioning edge 434 can rotate in the positioning groove 122. The operating knob 43 does not need to move up and down with the screw 41. The operating knob 43 includes a knob body 431, and a rubber sleeve 432 is provided at the lower end of the knob body 431. The rubber sleeve 432 has a pattern that increases friction, allowing the user to rotate better. A locking ring 44 is provided at the bottom end of the hollow body, which can lock the bottom of the first upper shell 11 and the first lower shell 12 to increase the stability of the structure.

[0030] The wear-resistant sleeve 5 is fixed on the first adapter part 13 by in-mold injection molding. An outwardly extending annular limit edge 51 is formed at one end of the wear-resistant sleeve 5 located in the first adapter part 13. The in-mold injection molding method can facilitate the production of the product. The wear-resistant sleeve 5 can be better connected to the first adapter part 13 or the second adapter part 23, and the formation of the annular limit edge 51 can further enhance the connection strength between the wear-resistant sleeve 5 and the first adapter part 13. The wear-resistant sleeve 5 is a metal ring with higher strength.

[0031] The second adapter part 23 is formed with a storage slot 232, and an end cover 25 for covering the storage slot 232 is arranged on the second adapter part 23. A counter (not shown in the figure) is arranged in the storage slot 232, and a display screen 251 and a control button 252 are arranged on the end cover. The counter, the display screen 251 and the control button 252 are already disclosed in the prior art and will not be described in detail here.

[0032] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of implementation of the present utility model. That is, equivalent changes and modifications made according to the scope of the patent application of the present utility model and the contents of the specification should still fall within the scope covered by the patent of the present utility model.

Claims

1. A hand gripper, comprising a first gripping rod, a second gripping rod and a resistance mechanism, wherein the upper ends of the first gripping rod and the second gripping rod are rotatably connected to each other in an opening and closing manner, and characterized in that: The resistance mechanism includes an elastic member and a pull rope. The first gripping rod is a hollow structure. The elastic member is arranged in the first gripping rod. One end of the pull rope is connected to the elastic member and the other end is connected to the second gripping rod. During the rotation and closing process of the first gripping rod and the second gripping rod, the pull rope pulls the elastic member to provide resistance to the closing of the first gripping rod and the second gripping rod.

2. A hand gripper according to claim 1, characterized in that: The elastic member is a coil spring, one end of which is connected to the first holding rod, and the other end of which is connected to the pull rope.

3. A hand gripper according to claim 2, characterized in that: The first holding rod includes a hollow body and an adjusting mechanism, the adjusting mechanism includes a nut and a screw, the nut is fixedly arranged in the hollow body, the screw is threadedly matched with the nut, and one end of the screw is rotatably connected to one end of the coil spring.

4. A hand gripper according to claim 3, characterized in that: It also includes an operating knob rotatably arranged at the lower end of the hollow main body, the screw rod includes a transition section, a threaded section, and a connecting section connected in sequence, the transition section is two cylinders connected to each other, the two cylinders are respectively a large diameter section arranged on the outside and a small diameter section arranged on the inside, the diameter of the large diameter section is larger than the small diameter section, one end of the coil spring surrounds the small diameter section and is restricted from disengaging by the large diameter section, thereby realizing the rotational connection between the coil spring and the screw rod, the outer surface of the threaded section is formed with an external thread extending along its length direction to cooperate with the nut thread, the cross-section of the connecting section is non-circular, and the operating knob is formed with a non-circular hole for inserting the connecting section.

5. A hand gripper according to claim 1, characterized in that: A first adapter portion is provided at the upper end of the first holding rod, and a second adapter portion is provided at the upper end of the second holding rod. The first adapter portion and the second adapter portion are rotatably connected to each other through an adapter shaft. A wear-resistant sleeve is provided on the first adapter portion or the second adapter portion. One end of the pull rope is connected to the elastic member, and the other end is connected to the second holding rod after passing through the wear-resistant sleeve. The wear-resistant sleeve is coaxially arranged with the adapter shaft.

6. A hand gripper according to claim 5, characterized in that: The wear-resistant sleeve is fixed on the first transition part or the second transition part by in-mold injection molding, and an annular limiting edge extending outward is formed on one end of the wear-resistant sleeve located in the first transition part or the second transition part.

7. A hand gripper according to claim 5, characterized in that: The adapter shaft includes an adapter and a bolt, the adapter includes a limiting cap and a rod body, one end of the rod body is connected to the limiting cap, and the other end passes through the first adapter part and the second adapter part, and is formed with a screw hole extending along its length direction, the bolt cooperates with the screw hole, the first adapter part and the second adapter part are formed with a first mounting hole and a second mounting hole for the rod body to pass through, the rod body passes through the first mounting hole and the second mounting hole, and the bolt is then threadedly cooperated with the screw hole of the rod body to realize the rotational connection between the first adapter part and the second adapter part.

8. A hand gripper according to claim 5, characterized in that: The first transition part or the second transition part is formed with a circular positioning boss, and the positioning boss is sleeved in the wear-resistant sleeve.

9. A hand gripper according to any one of claims 5 to 8, characterized in that: A counter and a control button are arranged on the first adapter part or the second adapter part.

10. A hand gripper according to any one of claims 1 to 8, characterized in that: The first gripping rod and the second gripping rod each include two halves that are interlocked.

Images