Grip strengthener and method of grip testing

Abstract

The application discloses a handgrip and a handgrip testing method, which comprises a support block, a sleeve, an air bag, and a piston assembly. The end face of the support block is attached to the end face of the sleeve and is fixed. The inner wall of the sleeve is fixedly provided with the air bag. The piston assembly comprises a piston cylinder, which is at least partially located in the air bag. The inner wall of the piston cylinder is slidably connected with a piston. The piston cylinder comprises a cavity one and a cavity two located on both sides of the piston. The cavity two is communicated with the inner cavity. The air bag is provided with a tension chamber. The piston is connected with a connecting rod. The connecting rod extends out of the air bag. The end of the connecting rod away from the air bag is connected with a sliding rod. When the sliding rod moves close to the air bag, the volume of the cavity one increases, and the volume of the cavity two decreases, so that the total volume of the cavity two and the inner cavity decreases, thereby increasing the pressure in the inner cavity, and the tension chamber contracts. When the sliding rod moves away from the air bag, the volume of the cavity one decreases, and the volume of the cavity two increases. The application provides a handgrip and a handgrip testing method, which can overcome arm tremor and improve the handgrip exercise effect.

Description

Technical Field

[0001] This invention relates to the field of grip strength testing equipment technology, and more particularly to a grip strength tester and grip strength testing method. Background Technology

[0002] As people age, their muscle strength gradually weakens. Strengthening muscles through exercise can improve physical vitality and help slow down the aging process. Grip strength, a skill involving the fingers, palm, and arm, is frequently used in daily life; therefore, improving grip strength can help enhance the self-care abilities of older adults. However, when using commonly available hand grip strengtheners, many older adults experience hand and arm tremors when applying significant force. This reduces their control over their grip muscles, making it difficult to concentrate force fully on the grip strengthener, resulting in insufficient training effectiveness. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a grip strength tester and grip strength testing method to overcome arm tremors and improve the grip strength training effect.

[0004] This invention discloses a grip strengthener, comprising a support block, a sleeve, an air bladder, and a piston assembly. The end face of the support block is attached and fixed to the end face of the sleeve. An air bladder is fixedly installed on the inner wall of the sleeve. The piston assembly includes a piston cylinder, at least partially located within the air bladder. A piston is slidably connected to the inner wall of the piston cylinder, and the piston moves along the axial direction of the sleeve. The piston cylinder includes a first cavity and a second cavity located on both sides of the piston, separated by the piston. The air bladder has an inner cavity, and the second cavity communicates with the inner cavity. The air bladder has a tension chamber. The tension chamber is located radially inside the airbag. A piston is connected to a connecting rod that extends out of the airbag. The end of the connecting rod away from the airbag is connected to a sliding rod that can move axially along the sleeve. When the sliding rod approaches the airbag, the volume of cavity one increases and the volume of cavity two decreases, so that the total volume of cavity two and the inner cavity decreases, thereby increasing the pressure inside the inner cavity and causing the tension chamber to contract. When the sliding rod moves away from the airbag, the volume of cavity one decreases and the volume of cavity two increases, so that the total volume of cavity two and the inner cavity increases, thereby decreasing the pressure inside the inner cavity and causing the tension chamber to expand.

[0005] Furthermore, the airbag has an opening that extends through the airbag in the radial direction and includes a tension chamber.

[0006] Furthermore, the support block is equipped with an extension frame, the length direction of the slide rod is perpendicular to the length direction of the extension frame, the extension frame is located on both sides of the support block, and a fixing rod is installed between the two extension frames, with the fixing rod located between the slide rod and the airbag.

[0007] Furthermore, it also includes a pressure pad, which is located on the side of the airbag away from the slide bar and can be pressed into the airbag.

[0008] Furthermore, a slider is installed on the side of the pressure pad away from the airbag, and an outer ring is fitted on the outer wall of the sleeve. The outer ring is threaded to the outer wall of the sleeve. The outer ring is provided with a pressure ring, which abuts against the slider and the abutting surface is perpendicular to the axial direction of the slider. The pressure ring can move the slider closer to or away from the airbag when it moves closer to or away from the airbag.

[0009] Furthermore, the sleeve is provided with limiting holes located on both sides of the sleeve along its axial direction, and the slider is provided with insert rods that are inserted into the limiting holes.

[0010] Furthermore, the piston cylinder is provided with a connecting end one and a connecting end two. The connecting end one passes through the end face of the airbag and is sealed to the airbag, while the connecting end two passes through the circumferential outer wall of the airbag and is sealed to the airbag.

[0011] Furthermore, the second connecting end passes through one end of the airbag and is fixed to the inner wall of the sleeve.

[0012] This invention also discloses a grip strength testing method using a grip strength tester, comprising the following steps:

[0013] ① The user's arm is inserted into the tension chamber, and their fingers grip the slide bar;

[0014] ② Pull the slide bar to move it closer to the airbag. The piston moves in the same direction, the volume of the second cavity and the inner cavity decreases, the pressure increases, the tension chamber contracts, and the extension frame is marked with scale values. According to the distance the slide bar moves, read the scale value on the extension frame as the test grip strength value.

[0015] The beneficial effects of this invention are:

[0016] As the slider moves, the piston moves in the same direction, reducing the volume of the second cavity and the inner cavity. The tension chamber contracts more intensely, and the wall's grip on the user's arm increases, preventing the elderly user's arm from trembling. The greater the gripping force applied by the elderly user, the greater the distance the slider moves, and the greater the gripping force on the user's arm, overcoming arm tremors and helping the elderly user exert maximum muscle grip strength to reach peak muscle power. This results in a stronger muscle stimulation effect and improved usage. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of an embodiment;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 A cross-sectional view along the MM direction;

[0020] Figure 4 for Figure 1 A cross-sectional view along the NN direction;

[0021] Figure 5 for Figure 1 A cross-sectional view along the PP direction.

[0022] Reference numerals: bracket block 1, sleeve 11, limiting hole 111, extension frame 12, slider 13, groove 131, through hole 132, insertion rod 133, outer ring 14, pressure ring 141, pressure pad 15, airbag 2, inner cavity 21, opening 22, tension chamber 221, wall surface 23, piston assembly 3, slide rod 31, connecting rod 32, piston 33, piston cylinder 34, cavity one 341, cavity two 342, connecting end one 343, connecting end two 344, fixing rod 4. Detailed Implementation

[0023] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, a grip strength tester is used for grip strength training and testing in the elderly. The grip strength tester includes a support block 1, combined with... Figure 5 Support block 1 is a rectangular block structure, with Figure 5 The top and bottom positions indicate the orientation of the hand gripper. Figure 5 In the middle, the bottom surface of the support block 1 is used to abut against the table surface when placed, and the top surface of the support block 1 is fixedly installed with an extension frame 12. The extension frame 12 is located on the left and right sides of the support block 1. Figure 1 In the middle, the extension frame 12 extends along the direction perpendicular to the length of the support block 1.

[0025] like Figure 1 As shown, the extension frame 12 extends out of the support block 1 to form a cantilever. On the side of the support block 1 away from the extension frame 12, a sleeve 11 is installed on the support block 1. Figure 3 The sleeve 11 is a circular ring structure, and the sleeve 11 is axially continuous. The end face of the support block 1 is attached to and fixed to the end face of the sleeve 11.

[0026] like Figure 1 As shown, an airbag 2 is fixedly installed on the inner wall of the sleeve 11, combined with Figure 3The airbag 2 has a fan-shaped cross-section with an angle between 240 and 280 degrees. The outer wall of the airbag 2 is fixed to the inner wall of the sleeve 11. The two end faces of the airbag 2 along the circumference are fixed to the sleeve 11 by a rigid plate, which is also fixed to the inner wall of the sleeve 11 to limit the expansion of the airbag 2 at that location. The airbag 2 has an inner cavity 21 and an opening 22 that extends radially through the airbag 2. The opening 22 includes a tension chamber 221, which is a cylindrical cavity with a fan-shaped cross-section. The user's hand and arm can be inserted into the opening 22, and the user's arm can be locked into the tension chamber 221. The airbag 2 is also provided with a wall 23, which is a fan-shaped columnar inner wall with an arc angle greater than 180°. The tension chamber 221 is located on the radial inner side of the wall 23. After the user's arm is inserted into the tension chamber 221, the pressure increases through the inner wall of the airbag 2 due to the contact between the radial outer side of the airbag 2 and the sleeve 11, causing the tension chamber 221 to contract and the wall 23 to move towards the center of the airbag 2, thereby locking the user's arm.

[0027] like Figure 1 , Figure 3 As shown, a piston assembly 3 is also fixedly installed on the inner wall of the sleeve 11. The piston assembly 3 includes a piston cylinder 34, which is at least partially located within the airbag 2. Specifically, in conjunction with... Figure 2 The piston cylinder 34 is provided with a first connection end 343 and a second connection end 344. The first connection end 343 extends out of the end face of the airbag 2 from inside the airbag 2, and the second connection end 344 extends out of the airbag 2 from the outer wall around the airbag 2. Both the first connection end 343 and the second connection end 344 are sealed to the airbag 2, and the second connection end 344 is fixedly connected to the inner wall of the sleeve 11.

[0028] like Figure 1 , Figure 2 As shown, a piston 33 is slidably connected to the inner wall of the piston cylinder 34. The piston 33 moves along the axial direction of the sleeve 11. A connecting rod 32 is connected to the piston 33. The connecting rod 32 extends out of the air bladder 2. A sliding rod 31 is connected to the end of the connecting rod 32 away from the air bladder 2. The sliding rod 31 can move along the axial direction of the sleeve 11. Figure 5 The slide bar 31 and the extension frame 12 abut against each other vertically. Figure 5 In the middle, the upper surface of the extension frame 12 is set horizontally, and the slide bar 31 moves on the horizontal surface.

[0029] like Figure 2 As shown, the piston cylinder 34 includes a first cavity 341 and a second cavity 342 located on both sides of the piston 33. Both the first cavity 341 and the second cavity 342 are in the direction of movement of the piston 33. The first cavity 341 and the second cavity 342 are separated by the piston 33, and the second cavity 342 is connected to the inner cavity 21.

[0030] like Figure 1As shown, a fixing rod 4 is installed between the two extension frames 12. The fixing rod 4 is located between the slide rod 31 and the airbag 2. When the user's arm is inserted into the tension chamber 221, and their fingers reach to the slide rod 31 and grasp it, the fingers tighten to move the slide rod 31 towards the side closer to the airbag 2, simultaneously causing the piston 33 to move in the same direction. Figure 2 At this point, the volume of cavity one 341 increases, and the volume of cavity two 342 decreases, so that the total volume of cavity two 342 and inner cavity 21 decreases, thereby increasing the pressure inside inner cavity 21, causing tension cavity 221 to contract, combined with Figure 3 The user's arm is tightly wrapped by the wall 23 to prevent the arm of elderly users from trembling, thereby improving the user's focus on the grip muscle group, so as to maximize muscle strength and improve the effect of use.

[0031] When the user releases the slider 31, the air pressure inside the airbag 2 causes the piston 33 to move toward the slider 31. The slider 31 moves in the same direction and away from the airbag 2. At this time, the volume of cavity one 341 decreases and the volume of cavity two 342 increases, so that the total volume of cavity two 342 and inner cavity 21 increases, thereby reducing the pressure inside inner cavity 21 and expanding tension cavity 221. This allows the user to relax, the force of the wall 23 on the arm to disappear, and the blood flow between the arm and fingers to be smooth, so as to provide energy replenishment to the muscles.

[0032] like Figure 1 As shown, the outer wall of the sleeve 11 is threadedly connected to an outer ring 14, which is a circular ring structure. The outer ring 14 is slidably connected to a slider 13, and the inner wall of the outer ring 14 is slidably connected to the outer wall of the slider 13.

[0033] Combination Figure 4 Slider 13 has a semi-circular ring structure. Figure 4 In the middle, the area where the user's arm is placed is located above the slider 13. The outer ring 14 includes a pressure ring 141, which extends radially inward along the inner wall of the outer ring 14 to form a ring shape. The slider 13 is provided with a groove 131, which is recessed radially inward along the outer wall of the slider 13 to form a semi-circular annular groove. The pressure ring 141 is inserted into the groove 131, and the axial end face of the pressure ring 141 abuts against the axial end face of the groove 131.

[0034] like Figure 1 As shown, the slider 13 is equipped with a pressure pad 15, which is located on the side of the airbag 2 away from the slide bar 31. The pressure pad 15 can press into the airbag 2. When the outer ring 14 is screwed into the sleeve 11, the pressure ring 141 pushes the slider 13 to move closer to the airbag 2, and at the same time, the pressure pad 15 presses into the airbag 2, so that the pressure inside the airbag 2 increases, allowing the user to adjust the tightness of the wall surface 23 on the arm after the arm is placed in the tension chamber 221.

[0035] like Figure 1As shown, the sleeve 11 is provided with limiting holes 111, which are located on both axial sides of the sleeve 11. The slider 13 is provided with a insertion rod 133, which is inserted into the limiting hole 111 to prevent the slider 13 from rotating. Figure 4 The slider 13 is also provided with a through hole 132 to prevent the slider 13 from interfering with the user's arm when it is placed.

[0036] A grip strength testing method, using the aforementioned grip strength tester, comprises the following steps:

[0037] ①For example Figure 1 As shown, the user's arm is inserted into the tension chamber 221, the fingers grip the slide bar 31, and the palm near the wrist presses against the fixing bar 4.

[0038] ② Screw the outer ring 14 into the sleeve 11. The outer ring 14 drives the slider 13 to move. The slider 13 moves closer to the airbag 2, so that the pressure pad 15 is pressed into the airbag 2. The air pressure inside the airbag 2 increases, the tension chamber 221 contracts, and the wall 23 wraps tightly around the user's arm.

[0039] ③ Pull the slide bar 31 to move it closer to the airbag 2. The extension frame 12 is marked with scale values. The scale value is read on the extension frame 12 according to the distance the slide bar 31 moves, and is used as the user's grip strength value.

[0040] Under the action of the sliding rod 31, the piston 33 moves in the same direction, causing the volume of the second cavity 342 and the inner cavity 21 to decrease. The tension chamber 221 contracts more intensely, and the wall surface 23 increases the gripping force on the user's arm, preventing the elderly user's arm from trembling. The greater the gripping force applied by the elderly user, the greater the distance that the sliding rod 31 moves, and the greater the gripping force of the wall surface 23 on the user's arm, overcoming arm trembling and helping the elderly user exert maximum muscle grip strength to reach the peak of muscle strength. The stimulation effect on the muscles is stronger, improving the usage effect.

[0041] ④ Release the slide bar 31. At this time, because the slide bar 31 moved closer to the airbag 2 in step ③, the pressure of cavity 1 341 is less than that of cavity 2 342. When the slide bar 31 is released, the piston 33 pushes the connecting rod 32 under the pressure difference to make the slide bar 31 move away from the airbag 2. The volume of cavity 2 342 and inner cavity 21 increases, tension cavity 221 expands, and the gripping force of the wall 23 on the user's arm weakens, so that after a grip strength exercise, the user's arm blood circulation is smooth and the muscles can continue to output power.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A handgrip, characterized in that The application relates to a supporting device, which comprises a supporting block (1), a sleeve (11), an air bag (2) and a piston assembly (3), the end face of the supporting block (1) is attached to the end face of the sleeve (11) and fixed, the inner wall of the sleeve (11) is fixedly provided with the air bag (2), the piston assembly (3) comprises a piston cylinder (34), the piston cylinder (34) is at least partially located in the air bag (2), the inner wall of the piston cylinder (34) is slidably connected with a piston (33), the moving direction of the piston (33) is along the axial direction of the sleeve (11), the piston cylinder (34) comprises a cavity one (341) and a cavity two (342) located on the two sides of the piston (33), the cavity one (341) and the cavity two (342) are separated by the piston (33), the air bag (2) is provided with an inner cavity (21), the cavity two (342) is communicated with the inner cavity (21). The air bag (2) is provided with a tension cavity (221), the tension cavity (221) is located on the inner side of the air bag (2) in the radial direction, the piston (33) is connected with a connecting rod (32), the connecting rod (32) extends out of the air bag (2), one end of the connecting rod (32) away from the air bag (2) is connected with a sliding rod (31), the sliding rod (31) can move along the axial direction of the sleeve (11), when the sliding rod (31) approaches the air bag (2), the volume of the cavity one (341) is increased, the volume of the cavity two (342) is decreased, so that the total volume of the cavity two (342) and the inner cavity (21) is decreased, thereby the pressure in the inner cavity (21) is increased, the tension cavity (221) is contracted, when the sliding rod (31) moves away from the air bag (2), the volume of the cavity one (341) is decreased, the volume of the cavity two (342) is increased, so that the total volume of the cavity two (342) and the inner cavity (21) is increased, thereby the pressure in the inner cavity (21) is decreased, the tension cavity (221) is expanded. The supporting block (1) is provided with an extension frame (12), the length direction of the sliding rod (31) is perpendicular to the length direction of the extension frame (12), the extension frame (12) is located on the two sides of the supporting block (1). The supporting device further comprises a pressing pad (15), the pressing pad (15) is located on the side of the air bag (2) away from the sliding rod (31), and the pressing pad (15) can be pressed into the air bag (2). The side of the pressing pad (15) away from the air bag (2) is provided with a sliding block (13), the outer wall of the sleeve (11) is sleeved with an outer sleeve ring (14), the outer sleeve ring (14) is threadedly connected with the outer wall of the sleeve (11), the outer sleeve ring (14) is provided with a pressing ring (141), the pressing ring (141) abuts against the sliding block (13) and the abutting face is perpendicular to the axial direction of the sliding block (13), the pressing ring (141) can drive the sliding block (13) to approach or move away from the air bag (2) by approaching or moving away from the air bag (2).

2. A handgrip according to claim 1, wherein The air bag (2) is provided with an opening part (22) penetrating the air bag (2) along the radial direction of the air bag (2), and the opening part (22) comprises the tension cavity (221).

3. A handgrip according to claim 1, wherein A fixing rod (4) is installed between the two extension frames (12), and the fixing rod (4) is located between the slide rod (31) and the air bag (2).

4. A handgrip according to claim 1, wherein The sleeve (11) is provided with a limiting hole (111) located on both axial sides of the sleeve (11), and the slide block (13) is provided with an insertion rod (133) inserted into the limiting hole (111).

5. A handgrip according to claim 1, wherein The piston cylinder (34) is provided with a connecting end one (343) penetrating the end face of the air bag (2) and being in sealed connection with the air bag (2), and a connecting end two (344) penetrating the circumferential outer wall of the air bag (2) and being in sealed connection with the air bag (2).

6. A handgrip according to claim 5, wherein The connecting end two (344) penetrates one end of the air bag (2) and is fixed to the inner wall of the sleeve (11).

7. A grip strength testing method using the grip strengthener according to any one of claims 1 to 6, characterized by, The method comprises the following steps: ①The user's arm is clamped into the tension cavity (221), and the fingers hold the slide rod (31); ②The slide rod (31) is pulled to move the slide rod (31) to the side close to the air bag (2), and the piston (33) moves in the same direction, the volume of the cavity two (342) and the inner cavity (21) is reduced, the pressure is increased, the tension cavity (221) is contracted, the extension frame (12) is engraved with a scale value, according to the moving distance of the slide rod (31), the scale value on the extension frame (12) is read out as the test grip value.

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