Wrist developer

Abstract

The invention provides a hand-muscle developer which is very simple in structure, small and exquisite in shape and capable of being configured with a large amount of force, a main body of the hand-muscle developer comprises a first grip, a second grip, two bearings and two guide columns, the two bearings are fixed to the first grip, five pressure spring holes are formed in the first grip, the two guide columns are fixed to the second grip, and five pressure spring holes are formed in the second grip. The first grip and the second grip are connected through the bearings and the guide columns, one to five pressure springs can be limited in respective pressure spring holes to perform opening and closing linear motion, the pressure springs can be increased, decreased or replaced only by separating the first grip from the guide columns and connecting the first grip after replacement, and the operation is very convenient and fast. The first grip can be limited by screwing the hand-turning screw and the nut, the situation that the first grip is separated from the guide column in the moving process, and consequently the limited compression spring is separated is prevented, and trainees who do not frequently change force and often go out to carry the device are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of fitness equipment, and more particularly to a handgrip strengthener. Background Art

[0002] In recent years, there are more and more fitness enthusiasts, and many fitness programs require grip strength. For example, deadlifts and pull-ups require good grip, and a handgrip strengthener is a good device for exercising grip strength. It is small in size and easy to carry, so you can exercise almost anytime and anywhere.

[0003] Currently, most of the existing hand grippers are A-type hand grippers, some of which have fixed strength and some have adjustable strength. However, this adjustable strength is only adjusted by the length of a spring stretched or compressed, which has great limitations.

[0004] Among the existing hand grippers, there are also flat hand grippers with a wide range of adjustable strength. A wide range of adjustable strength is achieved by installing one to multiple springs. This type of hand gripper obtains strength by stretching the spring, so it is relatively large in size and inconvenient to carry, and there are certain limitations in replacing the spring. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a hand gripper which can adjust the strength over a wide range, is easy to adjust, and has a compact size.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A hand gripper, characterized in that it includes a hand gripper body, which includes a first handle, a second handle, a first bearing, a second bearing, a first guide column, a second guide column, a bearing fixing screw, a guide column fixing screw, a limit screw and a nut, and an elastic component.

[0008] Furthermore, the elastic component is a compression spring, called a compression spring.

[0009] Furthermore, the first handle is a cylinder with anti-slip patterns on the surface, and is provided with a through circular hole near both ends, called a bearing hole, for accommodating the first bearing and the second bearing. The middle section of the first handle is provided with 5 non-through circular holes, called compression spring holes, for accommodating one end of the compression spring. The bearing hole and the compression spring hole are on the same surface, and a bearing fixing screw hole for fixing the first bearing and the second bearing is provided at the center of the two ends of the first handle.

[0010] Furthermore, the second handle is a cylinder with anti-slip patterns on the surface, and is provided with a non-through circular hole near both ends, called a guide post hole, for respectively placing one end of the first guide post and the second guide post. The middle section of the second handle is provided with 5 non-through circular holes, called compression spring holes, for placing the other end of the compression spring. The guide post hole and the compression spring hole are on the same plane and are opposite to the bearing hole and the compression spring hole on the first handle. A guide post fixing screw hole for fixing the first guide post and the second guide post is provided at the center of the two ends of the second handle.

[0011] Furthermore, both the first bearing and the second bearing are cylindrical linear bearings, and can be fixed in the two bearing holes on the first handle respectively by the bearing fixing screws through the bearing fixing screw holes at the centers of the two ends of the first handle.

[0012] Furthermore, one end of the first guide post and the second guide post are both flat-bottomed, and can be fixed to the two guide post holes on the second handle by the guide post fixing screws through the guide post fixing screw holes at the centers of the two ends of the second handle. The other ends of the first guide post and the second guide post are both semi-spherical, which are convenient for respectively extending into the first bearing and the second bearing. The first guide post is provided with a through circular hole near one end of the semi-spherical shape, which is called a limit hole, for installing the limit screw and the nut to limit the opening distance between the first handle and the second handle.

[0013] Furthermore, by utilizing the five compression spring holes on the first handle and the five compression spring holes opposite thereto on the second handle, the first guide column and the second guide column on the second handle are respectively extended into the first bearing and the second bearing on the first handle to restrict the compression spring and connect the first handle and the second handle, and the elastic force of the compression spring can perform linear movement of opening and closing of the first handle and the second handle.

[0014] The hand gripper with the above structure according to the present invention has a very simple structure and a compact size. The first handle and the second handle can be integrally processed with a metal knurling rod, or can be processed with plastic by opening a mold. Since the first handle and the second handle are connected by bearings and guide columns, the opening and closing of the handles are very smooth, and the replacement of compression springs is very convenient. 1-5 compression springs can be placed, and the strength can be adjusted by adding, reducing or replacing compression springs of different strengths, so that the adjustable strength is very much to meet the needs of different trainees. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2It is an exploded view of the present invention.

[0017] Figure 3 It is a cross-sectional view of the first handle of the present invention.

[0018] Figure 4 It is a cross-sectional view of the second handle of the present invention.

[0019] Figure 5 It is a schematic diagram of placing the compression spring of the present invention.

[0020] Figure 6 This invention continues Figure 5 Picture of the handgrip connection status after the compression spring is installed.

[0021] Figure 7 This invention continues Figure 6 Image of the hand gripper in the closed state after hand force.

[0022] In the figure: 1. first handle; 2. second handle; 3. first bearing; 4. second bearing; 5. first guide post; 6. second guide post; 7. bearing fixing screw; 8. guide post fixing screw; 9. limit screw and nut; 10. compression spring; 11. limit hole; 12. bearing hole; 13. first handle compression spring hole; 14. bearing fixing screw hole; 15. guide post hole; 16. second handle compression spring hole; 17. guide post fixing screw hole. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0024] It should be understood that in the description, terms such as "one end", "two ends", "opposite", "middle section", "center of a circle", "close", "same face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the holes, slots, components, elements and the like referred to must have specific positions, be constructed and operated in specific positions, and therefore should not be understood as limiting the present invention.

[0025] See also Figure 1-4The present invention provides a grip strengthener, wherein the first grip 1 is provided with a first bearing 3, a second bearing 4, and five compression spring holes 13; the second grip 2 is provided with a first guide column 5, a second guide column 6, and five compression spring holes 16, and is opposite to the first bearing 3, the second bearing 4, and the five compression spring holes 13 on the first grip 1; the first bearing 3 and the second bearing 4 can be fixed and removed by bearing fixing screws 7 through the bearing fixing screw holes 14 at both ends of the first grip 1; the first guide column 5 and the second guide column 6 can be fixed and removed by guide column fixing screws 8 through the guide column fixing screw holes 17 at both ends of the second grip 2; one end of the first guide column 5 and the second guide column 6 are both semi-spherical, which is convenient for inserting into the bearing, and a limiting hole 11 is provided at one end of the first guide column 5 close to the semi-spherical shape, and the opening distance of the first grip 1 and the second grip 2 can be limited by tightening the limiting screw and the nut 9, and the limiting screw and the nut 9 are hand screws and hand nuts, and can be unscrewed and replaced with compression springs at any time to adjust the strength without the aid of tools.

[0026] See also Figure 5-7 According to the present invention, one end of 1 to 5 compression springs 10 can be placed in the compression spring hole 13 of the first grip 1, and the first guide column 5 and the second guide column 6 on the second grip 2 are respectively extended into the first bearing 3 and the second bearing 4 on the first grip 1 opposite thereto, and the other end of the compression spring 10 is placed in the compression spring hole 16 on the second grip 2, so as to connect the first grip 1 and the second grip 2, and restrict the compression spring 10 in the compression spring hole. The first bearing 3 and the second bearing 4 are respectively connected to the first guide column 5 and the second guide column 6, and the compression spring 10 restricted in the compression spring hole can only perform linear motion, and is very smooth without jamming. To replace the compression spring 10 again, it is only necessary to separate the first grip 1 from the guide column and then connect it after replacement, and the replacement speed is very fast.

[0027] The second grip 2 is placed on the palm, and the first grip 1 is placed on the fingers. When the hand exerts force, the first grip 1 can compress the compression spring 10 linearly along the first guide post 5 and the second guide post 6 through the first bearing 3 and the second bearing 4 until the first grip 1 and the second grip 2 are completely closed. The depth of the compression spring hole is sufficient to allow the first grip 1 and the second grip 2 to be completely closed. When the hand relaxes, the elastic force of the compression spring 10 will push the first grip 1 to its original position along the first guide post 5 and the second guide post 6. The set lengths of the first guide post 5, the second guide post 6 and the compression spring 10 and the depth of the compression spring hole will not push the first grip 1 away from the guide post. The diameters of the first grip 1 and the second grip 2 are larger than the diameter of the compression spring 10, so there is no need to worry about the compression spring 10 pinching the hand during the compression process.

[0028] A limiting hole 11 is provided near one end of the semi-spherical shape of the first guide post 5, for installing a limiting screw and a nut 9 that can be screwed by hand, so as to limit the distance between the first handle 1 and the second handle 2, and prevent the first handle 1 from being separated from the guide post during movement, causing the restricted compression spring 10 to be separated. The limiting screw and the nut 9 can be screwed when it is needed to be carried outside or the trainer does not frequently change the strength after configuring it. Some trainers need to frequently increase or decrease the compression spring 10 to adjust the strength during a training session, such as the decreasing group in a fitness program. In this case, the limiting screw and the nut 9 do not need to be screwed, so as to quickly adjust the strength, and can be screwed after the training is completed.

[0029] The present invention can accommodate 1-5 compression springs 10, and materials with different wire diameters can be used to make compression springs 10 with different strengths. Therefore, the adjustable strength is very much. One compression spring with very small strength can be configured for rehabilitation training, and five compression springs with very large strength can be configured for professional grip strength training. For trainees with special needs, the length of the compression spring 10 can also be changed to increase or decrease the grip stroke. If necessary, the length of the first guide column 5 and the second guide column 6 can also be changed to increase the aesthetics.

[0030] The first grip 1 and the second grip 2 can be processed by using a metal knurling rod. The knurling process on the surface of the grip can prevent slipping. They can also be made of plastic by cutting a mold, which can greatly reduce the cost.

[0031] The present invention is not only small in size and easy to carry, but also has a wide range of adjustable strengths and can be adjusted quickly to suit trainees with different needs. Moreover, the structure is very simple and all components are detachable. If any component is damaged, only the component needs to be replaced.

[0032] Although some embodiments of the present invention have been shown and described, those skilled in the art will appreciate that several improvements and modifications may be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hand gripper, characterized in that: The invention comprises a handgrip body, which comprises a first handle (1), a second handle (2), a first bearing (3), a second bearing (4), a first guide column (5), a second guide column (6), a bearing fixing screw (7), a guide column fixing screw (8), a limit screw and a nut (9), and an elastic component (10).

2. A hand gripper according to claim 1, characterized in that: The elastic component is a compression spring (10), which is called a compression spring (10).

3. A hand gripper according to claim 1, characterized in that: The first handle (1) is cylindrical with anti-slip patterns on the surface, and is provided with a through circular hole (12) near both ends, called a bearing hole (12), for accommodating the first bearing (3) and the second bearing (4). The middle section of the first handle (1) is provided with five non-through circular holes (13), called compression spring holes (13), for accommodating one end of the compression spring (10). The bearing hole (12) and the compression spring hole (13) are both on the same surface, and the centers of the two ends of the first handle (1) are respectively provided with a bearing fixing screw hole (14) for fixing the first bearing (3) and the second bearing (4).

4. A hand gripper according to claim 1, characterized in that: The second handle (2) is cylindrical with anti-slip patterns on the surface, and is provided with a non-through circular hole (15) near both ends, called the guide post hole (15), for respectively placing one end of the first guide post (5) and the second guide post (6). The middle section of the second handle (2) is provided with five non-through circular holes (16), called the compression spring holes (16), for placing the other end of the compression spring (10). The guide post hole (15) and the compression spring hole (16) are both on the same plane and are opposite to the bearing hole (12) and the compression spring hole (13) on the first handle (1). The center of the two ends of the second handle (2) is provided with a guide post fixing screw hole (17) for fixing the first guide post (5) and the second guide post (6).

5. A hand gripper according to claims 1 and 3, characterized in that: The first bearing (3) and the second bearing (4) are both cylindrical linear bearings and can be fixed in the two bearing holes (12) on the first handle (1) by the bearing fixing screws (7) through the bearing fixing screw holes (14) at the centers of the two ends of the first handle (1).

6. A hand gripper according to claims 1 and 4, characterized in that: One end of the first guide post (5) and the second guide post (6) are both flat-bottomed, and can be fixed to the two guide post holes (15) on the second handle (2) by the guide post fixing screws (8) through the guide post fixing screw holes (17) at the centers of the two ends of the second handle (2). The other ends of the first guide post (5) and the second guide post (6) are both semi-spherical, so as to be easily inserted into the first bearing (3) and the second bearing (4) respectively. A through-hole (11) is provided near one end of the semi-spherical shape of the first guide post (5), which is called a limit hole (11) and is used to install the limit screw and nut (9) to limit the distance between the first handle (1) and the second handle (2).

7. A hand gripper according to claims 1-6, characterized in that: By utilizing the five compression spring holes (13) on the first handle (1) and the five compression spring holes (16) on the second handle (2) opposite thereto, the first guide column (5) and the second guide column (6) on the second handle (2) are respectively extended into the first bearing (3) and the second bearing (4) on the first handle (1), so as to restrict the compression spring (10) and connect the first handle (1) and the second handle (2), and the first handle (1) and the second handle (2) can be opened and closed in a straight line motion by the elastic force of the compression spring (10).

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