Arm strength device

Abstract

The utility model provides an arm strength device, and aims to solve the problem that the elastic resistance of an arm strength spring on an arm strength device in the prior art is fixed and cannot be adjusted, so that the requirements of more users cannot be met. An arm strength device comprises a connecting base; the two force arms are arranged on the left side and the right side of the connecting base respectively, and each force arm is rotationally connected with the connecting base; a first elastic piece is arranged between each force arm and the connecting seat; and the two adjusting assemblies are arranged on the two force arms correspondingly, and each adjusting assembly is used for adjusting the elastic resistance of the first elastic piece corresponding to the adjusting assembly. A user can adjust the elastic resistance of the first elastic piece through the adjusting assembly according to specific exercise requirements, so that a better exercise effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically relating to an arm strength trainer. Background Technology

[0002] Existing arm exercisers work by the user gripping the left and right arms with both hands, applying force to bring the arms closer together. This causes the arm springs between the arms to bend, applying muscle strength to the arms and shoulders. The user then releases the force, allowing the arm springs to return to their original positions. Repeating this action can strengthen the muscles in the arms and shoulders. However, the elastic resistance of the arm springs in these existing exercisers is fixed and cannot be adjusted, thus failing to meet the needs of a wider range of users. Utility Model Content

[0003] This invention provides an arm strength exerciser, which aims to solve the problem that the elastic resistance of the arm strength spring in existing arm strength exercisers is fixed and cannot be adjusted, thus failing to meet the needs of more users.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An arm strength exerciser, comprising:

[0006] Connector;

[0007] Two lever arms are respectively disposed on the left and right sides of the connecting seat, and each lever arm is rotatably connected to the connecting seat; a first elastic element is provided between each lever arm and the connecting seat; and,

[0008] Two sets of adjustment components are respectively set on the two lever arms, and each set of adjustment components is used to adjust the elastic resistance of the first elastic element corresponding to it.

[0009] A further embodiment: the adjusting assembly includes a lead screw rotatably mounted on the lever arm and a nut seat threadedly connected to the lead screw, wherein a guide assembly is provided between the nut seat and the lever arm;

[0010] The two ends of the first elastic element are respectively connected to the nut seat and the connecting seat. The elastic resistance of the first elastic element is adjusted by rotating the screw to move the nut seat closer to or away from the connecting seat.

[0011] Based on the above technical solution: through the structure of the lead screw and nut seat, and with the first elastic element connected to the nut seat, the user can easily adjust the elastic resistance of the first elastic element by rotating the lead screw, thus facilitating user operation.

[0012] A further embodiment: The guide assembly includes a guide block disposed on the nut seat and a guide groove disposed on the lever arm, the guide block being located within the guide groove, and the first elastic element being connected to the guide block.

[0013] Based on the above technical solution: the above configuration makes the nut seat slide along the lever arm through the guide assembly when the lead screw is rotated, which makes it more stable when adjusting the elastic resistance of the first elastic element.

[0014] A further solution: an arm strength trainer, further comprising:

[0015] Two sets of ratchet and pawl assemblies are respectively disposed between two lever arms and the connecting seat, and the two sets of ratchet and pawl assemblies are symmetrically arranged left and right; each ratchet and pawl assembly includes a ratchet disposed on the lever arm and a pawl disposed on the connecting seat, and a damping assembly is provided between the pawl and the connecting seat, the damping assembly including a first damping element disposed on the connecting seat and a second damping element cooperating with the pawl;

[0016] When an external force drives the two lever arms to move closer together, each lever arm drives the ratchet to rotate relative to its corresponding pawl, and the two first elastic elements respectively provide elastic resistance to the two lever arms to move away from each other and reset. When the two lever arms move away from each other and reset under the action of the two first elastic elements, each lever arm drives the pawl and the second damping element that cooperates with the pawl to rotate and reset relative to the first damping element through the ratchet, and the first damping element provides damping force to the corresponding ratchet to rotate and reset through frictional contact with the second damping element.

[0017] Based on the above technical solution: by setting a ratchet and pawl assembly and a damping assembly, when the user drives the two lever arms to move closer together, each lever arm can drive the ratchet connected to it to rotate smoothly relative to its corresponding pawl. At this time, both first elastic elements are stretched, thus providing elastic resistance to the two lever arms to move away from each other and reset. When the user releases the force applied to the lever arms, the elastic resistance drives the two lever arms to reset. At this time, each lever arm drives the pawl and the second damping element to slowly rotate relative to the first damping element and reset. The first damping element provides frictional damping force during rotation through frictional contact with the second damping element, thus allowing the two lever arms to reset slowly, which can prevent the lever arms from hitting people and causing injury during reset.

[0018] A further embodiment: There are two second damping elements, located on the front and rear sides of the pawl respectively; there are two first damping elements, each of the two first damping elements cooperating with the two second damping elements, and the two second damping elements being clamped between the two first damping elements.

[0019] Based on the above technical solution: by setting two second damping elements to be clamped between two first damping elements, the two first damping elements respectively make frictional contact with the two second damping elements, which can provide a stable damping effect, thereby making the two lever arms slowly reset more stably.

[0020] A further embodiment: the pawl is disposed on the inner side of the ratchet, and a plurality of ratchet teeth are provided around the inner side of the ratchet; one end of the pawl is provided with a pawl tooth portion that engages with the ratchet teeth, and the other end is provided with a first abutting end;

[0021] One of the second damping members is provided with a stop portion for driving the claw tooth portion to engage with the ratchet tooth. One end of the stop portion is provided with a second stop end that abuts against the first stop end, and the other end of the stop portion is provided with a second elastic member between it and the claw tooth portion.

[0022] The two second damping elements are connected and rotate synchronously.

[0023] Based on the above technical solution: the pawl is placed inside the ratchet for easy installation, and a stop is provided on one of the second damping components to drive the pawl and ratchet, as well as the pawl and the second damping component, to form a stable engagement relationship, so that when the lever arm is reset, the three components rotate synchronously and slowly reset; by setting two second damping components to rotate synchronously, the pawl can drive the two second damping components to rotate synchronously by abutting against one of the second damping components.

[0024] A further embodiment: A central shaft extending in the front-rear direction is provided between the second damping member and the connecting seat, the second damping member is rotatably connected to the central shaft, and the central shaft passes through the ratchet, the second damping member and the first damping member.

[0025] A further embodiment: The pawl has a connecting post extending in the front-to-back direction in the middle, and the front and rear ends of the connecting post are respectively inserted into the two second damping members, and the pawl is synchronously rotated and connected to the two second damping members through the connecting post.

[0026] A further solution: The second damping component is provided with a second damping surface, and the first damping component is provided with a first damping surface, and the first damping surface and the second damping surface are in surface contact and fit together.

[0027] Based on the above technical solution: the second damping component, through surface contact with the first damping component, provides more stable frictional resistance, enabling the two lever arms to return to their original position more stably and slowly, thus avoiding impact on the user and causing injury.

[0028] A further embodiment: The connecting seat is composed of a front half housing and a rear half housing spliced ​​together and fixedly connected by bolts, and the ratchet and pawl assembly and the damping assembly are clamped between the front half housing and the rear half housing.

[0029] Based on the above technical solution: the above arrangement enables the two second damping elements to be clamped between the two first damping elements after assembly, thereby forming a frictional contact between the second damping elements and the first damping elements.

[0030] A further embodiment: The upper side of the connecting seat is provided with two elastic element connecting parts on the left and right, and the lower side is provided with two lever arm connecting parts on the left and right. The ends of the two first elastic elements near the connecting seat are respectively connected to the corresponding elastic element connecting parts, and the two lever arms are respectively connected to the two lever arm connecting parts.

[0031] Based on the above technical solution: the above configuration facilitates the installation of the first elastic element and the lever arm.

[0032] The beneficial effects of this utility model are as follows:

[0033] The arm strength trainer provided by this utility model has two arms respectively set on the left and right sides of the connecting seat, and each arm is rotatably connected to the connecting seat. Each arm is equipped with an adjustment component for adjusting the elastic resistance of its corresponding first elastic element. This allows the user to adjust the elastic resistance of the first elastic element according to specific training needs to achieve better training results. By setting two sets of adjustment components to adjust the elastic resistance of the two first elastic elements respectively, the user can easily adjust to balance the elastic resistance of the two arms. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural schematic diagram of an arm strength device according to the present invention.

[0036] Figure 2 This is an exploded structural diagram of an arm strength device according to this utility model.

[0037] Figure 3 This is an exploded structural diagram of the damping assembly and the ratchet and pawl assembly.

[0038] Figure 4 This is a cross-sectional structural diagram of an arm strength device according to the present invention.

[0039] Figure 5 yes Figure 4 A magnified structural diagram at point A.

[0040] Explanation of the labels in the diagram:

[0041] 1-Connecting seat; 11-Front half housing; 12-Rear half housing; 13-Central shaft; 14-Elastic element connecting part; 2-Lever arm; 21-Hand grip part; 22-Screw rod; 221-Knob; 23-Nut seat; 231-Guide block; 24-Guide groove; 3-First damping element; 4-Second damping element; 41-Abutting part; 411-Second abutting end; 412-Second elastic element; 413-Connecting post; 5-Ratchet; 6-Pawl; 61-First abutting end; 62-Pawl teeth part; 7-First elastic element. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0043] like Figures 1 to 5 As shown, this embodiment provides an arm strength trainer, including:

[0044] Connector 1;

[0045] Two lever arms 2 are respectively disposed on the left and right sides of the connecting seat 1, and each lever arm 2 is rotatably connected to the connecting seat 1; a first elastic element 7 is provided between each lever arm 2 and the connecting seat 1, the first elastic element 7 being specifically a lever spring; and,

[0046] Two sets of adjustment components are respectively set on the two lever arms 2, and each set of adjustment components is used to adjust the elastic resistance of the first elastic element 7 corresponding to it.

[0047] To facilitate user operation, the lever arm 2 is provided with a hand grip 21.

[0048] In some specific implementations, such as Figures 1 to 3 As shown, the adjustment assembly includes a lead screw 22 rotatably mounted on the lever arm 2 and a nut seat 23 threadedly connected to the lead screw 22, and a guide assembly is provided between the nut seat 23 and the lever arm 2;

[0049] The first elastic element 7 has two ends connected to the nut seat 23 and the connecting seat 1, respectively. The elastic resistance of the first elastic element 7 is adjusted by rotating the lead screw 22 to move the nut seat 23 closer to or further away from the connecting seat 1. Specifically, the lead screw 22 is coaxially arranged with the lever arm 2, and a knob 221 is provided at the outer end of the lead screw 22 for easy rotation by the user. The guiding assembly includes a guide block 231 disposed on the nut seat 23 and a guide groove 24 disposed on the lever arm 2. The guide block 231 is located within the guide groove 24, and the first elastic element 7 is connected to the guide block 231.

[0050] The connecting seat 1 has two elastic element connecting parts 14 on its upper side and two lever arm connecting parts 2 on its lower side. The ends of the two first elastic elements 7 near the connecting seat 1 are respectively connected to the corresponding elastic element connecting parts 14, and the two lever arms 2 are respectively connected to the two lever arm 2 connecting parts. The elastic element connecting part 14 is specifically a hanging shaft, and the first elastic element 7 is a lever spring, which is hung on the hanging shaft.

[0051] In some specific implementations, such as Figures 1 to 5 As shown, to prevent the two lever arms 2 from impacting the user and causing injury due to rapid rebound when resetting under the elastic resistance of the two second elastic elements 412, the arm strength device of this embodiment further includes:

[0052] Two sets of ratchet 5 and pawl 6 assemblies are respectively disposed between the two lever arms 2 and the connecting seat 1, and the two sets of ratchet 5 and pawl 6 assemblies are arranged symmetrically from left to right. Each ratchet 5 and pawl 6 assembly includes a ratchet 5 disposed on the lever arm 2 and a pawl 6 disposed on the connecting seat 1. A damping assembly is provided between the pawl 6 and the connecting seat 1. The damping assembly includes a first damping element 3 disposed on the connecting seat 1 and a second damping element 4 that cooperates with the pawl 6. The cooperation of the ratchet 5 and pawl 6 allows the ratchet 5 to rotate smoothly relative to the pawl 6 when the user drives the two lever arms 2 to move closer together. When the lever arm 2 is reset, it will drive the pawl 6 to rotate synchronously through the ratchet 5 connected to it. The lever arm 2 is fixedly connected to its corresponding ratchet 5.

[0053] Specifically, when an external force drives the two lever arms 2 to move closer together, each lever arm 2 drives the ratchet 5 to rotate relative to its corresponding pawl 6, and the two first elastic elements 7 respectively provide elastic resistance to the two lever arms 2 to move away from each other and reset. When the two lever arms 2 move away from each other and reset under the action of the two first elastic elements 7, each lever arm 2 drives the pawl 6 and the second damping element 4 that cooperates with the pawl 6 to rotate relative to the first damping element 3 and reset. The first damping element 3 provides damping force to the corresponding ratchet 5 to rotate and reset through frictional contact with the second damping element 4, thereby making the two lever arms 2 reset slowly and avoiding injury to people when the lever arms 2 are reset.

[0054] In some specific implementations, such as Figures 2 to 5 As shown, there are two second damping elements 4, located on the front and rear sides of the pawl 6 respectively; there are two first damping elements 3, each of which engages with one of the two second damping elements 4, and the two second damping elements 4 are clamped between the two first damping elements 3. This causes the two first damping elements 3 to make frictional contact with the two second damping elements 4 respectively.

[0055] In some specific embodiments, for ease of assembly, the pawl 6 is disposed on the inner side of the ratchet 5, and a plurality of ratchet teeth are provided around the inner side of the ratchet 5; one end of the pawl 6 is provided with a pawl tooth portion 62 that engages with the ratchet teeth, and the other end is provided with a first abutting end 61;

[0056] One of the second damping elements 4 is provided with a stop portion 41 for driving the pawl 62 to engage with the ratchet. One end of the stop portion 41 is provided with a second stop end 411 that abuts against the first stop end 61. The other end of the stop portion 41 is provided with a second elastic element 412 between it and the pawl 62. The second elastic element 412 can be a spring. The stop portion 41 can be set in a semi-circular shape, with its outer circumferential surface contacting and engaging with the inner side of the ratchet 5. Thus, when the lever arm 2 is reset, the ratchet 5, the pawl 6, and the second damping element 4 are made to rotate synchronously through the above structure.

[0057] The two second damping elements 4 are synchronously rotatably connected. Specifically, the pawl 6 has a connecting post 413 extending in the front-to-back direction in the middle. The front and rear ends of the connecting post 413 are respectively inserted into the two second damping elements 4, and the pawl 6 is synchronously rotatably connected to the two second damping elements 4 through the connecting post 413.

[0058] The second damping member 4 and the connecting seat 1 are provided with a central shaft 13 extending in the front-rear direction. The second damping member 4 is rotatably connected to the central shaft 13, and the central shaft 13 passes through the ratchet 5, the second damping member 4 and the first damping member 3.

[0059] In some specific implementations, such as Figures 2 to 5 As shown, the second damping member 4 has a second damping surface, and the first damping member 3 has a first damping surface. The first damping surface and the second damping surface are in surface contact with each other. Depending on the specific requirements, several first damping members 3 can be provided, and two adjacent first damping members 3 are in surface contact with each other.

[0060] In some specific embodiments, the connecting seat 1 is composed of a front half housing 11 and a rear half housing 12 joined together and fixedly connected by bolts, and the ratchet 5 and pawl 6 assembly and the damping assembly are clamped between the front half housing 11 and the rear half housing 12. Thus, after assembly, the two second damping elements 4 are clamped between the two first damping elements 3, thereby forming a frictional contact between the second damping elements 4 and the first damping elements 3.

[0061] Working principle explanation:

[0062] When using the arm exerciser, the user holds the two lever arms 2 with both hands and moves them closer together. This stretches the two first elastic elements 7, generating elastic resistance. When the user releases the force applied to the two lever arms 2, they return to their original position under the action of elastic resistance. At this time, each lever arm 2 is slowly rotated back to its original position by the ratchet 5 driving the pawl 6 and the second damping element 4 relative to the first damping element 3. The first damping element 3 provides frictional damping force during rotation by frictionally contacting the second damping element 4, thus allowing the two lever arms 2 to slowly return to their original position. This prevents the lever arms 2 from hitting people and causing injury during the return process.

[0063] Users can adjust the elastic resistance of the first elastic element 7 by rotating the lead screw 22 to move the nut seat 23 toward or away from the connecting seat 1 according to specific exercise needs.

[0064] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. An arm strength trainer, characterized in that, include: Connector; Two lever arms are respectively disposed on the left and right sides of the connecting seat, and each lever arm is rotatably connected to the connecting seat; a first elastic element is provided between each lever arm and the connecting seat; and, Two sets of adjustment components are respectively set on the two lever arms, and each set of adjustment components is used to adjust the elastic resistance of the first elastic element corresponding to it.

2. The arm strength trainer according to claim 1, characterized in that, The adjusting assembly includes a lead screw rotatably mounted on the lever arm and a nut seat threadedly connected to the lead screw, with a guide assembly provided between the nut seat and the lever arm; The two ends of the first elastic element are respectively connected to the nut seat and the connecting seat. The elastic resistance of the first elastic element is adjusted by rotating the screw to move the nut seat closer to or away from the connecting seat.

3. The arm strength trainer according to claim 2, characterized in that, The guide assembly includes a guide block disposed on the nut seat and a guide groove disposed on the lever arm. The guide block is located in the guide groove, and the first elastic element is connected to the guide block.

4. An arm strength trainer according to claim 1, 2, or 3, characterized in that, Also includes: Two sets of ratchet and pawl assemblies are respectively disposed between two lever arms and the connecting seat, and the two sets of ratchet and pawl assemblies are symmetrically arranged left and right; each ratchet and pawl assembly includes a ratchet disposed on the lever arm and a pawl disposed on the connecting seat, and a damping assembly is provided between the pawl and the connecting seat, the damping assembly including a first damping element disposed on the connecting seat and a second damping element cooperating with the pawl; When an external force drives the two lever arms to move closer together, each lever arm drives the ratchet to rotate relative to its corresponding pawl, and the two first elastic elements respectively provide elastic resistance to the two lever arms to move away from each other and reset. When the two lever arms move away from each other and reset under the action of the two first elastic elements, each lever arm drives the pawl and the second damping element that cooperates with the pawl to rotate and reset relative to the first damping element through the ratchet, and the first damping element provides damping force to the corresponding ratchet to rotate and reset through frictional contact with the second damping element.

5. The arm strength trainer according to claim 4, characterized in that, There are two second damping elements, located on the front and rear sides of the pawl respectively; there are two first damping elements, each of the two first damping elements cooperating with the two second damping elements, and the two second damping elements being clamped between the two first damping elements.

6. The arm strength trainer according to claim 4, characterized in that, The pawl is disposed on the inner side of the ratchet, and a plurality of ratchet teeth are provided around the inner side of the ratchet; one end of the pawl is provided with a pawl tooth portion that engages with the ratchet teeth, and the other end is provided with a first abutting end; One of the second damping members is provided with a stop portion for driving the claw tooth portion to engage with the ratchet tooth. One end of the stop portion is provided with a second stop end that abuts against the first stop end, and the other end of the stop portion is provided with a second elastic member between it and the claw tooth portion. The two second damping elements are connected and rotate synchronously.

7. The arm strength trainer according to claim 4, characterized in that, A central shaft extending in the front-rear direction is provided between the second damping member and the connecting seat. The second damping member is rotatably connected to the central shaft, and the central shaft passes through the ratchet, the second damping member, and the first damping member.

8. The arm strength trainer according to claim 7, characterized in that, The pawl is provided with a connecting post extending in the front-to-back direction in the middle. The front and rear ends of the connecting post are respectively inserted into the two second damping members, and the pawl is synchronously rotated and connected to the two second damping members through the connecting post.

9. The arm strength trainer according to claim 4, characterized in that, The second damping member has a second damping surface, and the first damping member has a first damping surface, with the first damping surface and the second damping surface in surface contact.

10. The arm strength trainer according to claim 4, characterized in that, The connecting seat is composed of a front half housing and a rear half housing spliced ​​together and fixedly connected by bolts, and the ratchet and pawl assembly and the damping assembly are clamped between the front half housing and the rear half housing. The upper side of the connecting seat is provided with two elastic element connecting parts on the left and right, and the lower side is provided with two lever arm connecting parts on the left and right. The two first elastic elements are respectively connected to the corresponding elastic element connecting parts at their ends near the connecting seat, and the two lever arms are respectively connected to the two lever arm connecting parts.

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