Arm strength device

Abstract

The invention 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] The invention belongs to the technical field of fitness equipment, and in particular relates to an arm trainer. Background Art

[0002] With existing arm trainers, the user grasps the left and right arms with both hands and applies force to bring the arms closer together, causing the arm spring between the two arms to bend, imparting strength to the arms, shoulders, and other muscles. The user then releases the applied force, causing the arm spring to return to its original separated position. Repeating this action strengthens the arms, shoulders, and other muscles. The elastic resistance of the arm springs in existing arm trainers is fixed and cannot be adjusted, thus failing to meet the needs of a wider range of users. Summary of the Invention

[0003] The present invention provides an arm strengthener, which aims to solve the problem in the prior art that the elastic resistance of the arm spring on the arm strengthener is fixed and cannot be adjusted, resulting in the inability to meet the needs of more users.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] An arm trainer, comprising:

[0006] Connecting seat;

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

[0008] Two groups of adjustment components are respectively arranged on the two force arms, and each group of the adjustment components is used to adjust the elastic resistance of the first elastic member corresponding thereto.

[0009] A further solution: the adjustment assembly includes a screw rod rotatably arranged on the lever arm and a nut seat threadedly connected to the screw rod, and a guide assembly is provided between the nut seat and the lever arm;

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

[0011] Based on the above technical solution: through the structure of the screw nut seat, and the first elastic member is connected to the nut seat, it is convenient for the user to adjust the elastic resistance of the first elastic member by rotating the screw, which is convenient for user operation.

[0012] A further solution: the guide assembly includes a guide block arranged on the nut seat and a guide groove arranged on the force arm, the guide block is located in the guide groove, and the first elastic member is connected to the guide block.

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

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

[0015] Two groups of ratchet and pawl assemblies, the two groups of ratchet and pawl assemblies are respectively arranged between the two force arms and the connecting seat, and the two groups of ratchet and pawl assemblies are symmetrically arranged on both sides; the ratchet and pawl assemblies include a ratchet arranged on the force arm and a pawl arranged on the connecting seat, a damping assembly is provided between the pawl and the connecting seat, and the damping assembly includes a first damping member arranged on the connecting seat and a second damping member cooperating with the pawl;

[0016] When an external force drives the two force arms to move closer to each other, each force arm drives the ratchet to rotate relative to its corresponding pawl, and the two first elastic members respectively provide elastic resistance to the two force arms to move away from each other and reset; when the two force arms move away from each other and reset under the action of the two first elastic members, each force arm drives the pawl and the second damping member cooperating with the pawl to rotate and reset relative to the first damping member through the ratchet, and the first damping member provides a damping force for the corresponding ratchet to rotate and reset through frictional contact with the second damping member.

[0017] Based on the above technical solution: by setting a ratchet pawl assembly and a damping assembly, when the user drives the two lever arms towards each other, each lever arm can drive the ratchet connected to it to rotate smoothly relative to the pawl corresponding to it. At this time, the two first elastic members are stretched, thereby giving the two lever arms elastic resistance to reset away from each other; 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 member to slowly rotate and reset relative to the first damping member through the ratchet. The first damping member gives it a friction damping force during rotation through frictional contact with the second damping member, thereby causing the two lever arms to slowly reset, which can prevent the lever arms from hitting people and causing injury when resetting.

[0018] A further solution is that there are two second damping members, which are located on the front and rear sides of the pawl respectively; there are two first damping members, the two first damping members are respectively matched with the two second damping members, and the two second damping members are clamped between the two first damping members.

[0019] Based on the above technical solution: by arranging two second damping members to be clamped between the two first damping members, the two first damping members are respectively in frictional contact with the two second damping members, which can provide a stable damping effect, thereby making the slow reset of the two force arms more stable.

[0020] A further solution: the pawl is arranged on the inner side of the ratchet wheel, and a plurality of ratchet teeth are arranged around the inner side of the ratchet wheel; one end of the pawl is provided with a claw portion that cooperates 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 an abutting portion for driving the claw portion to cooperate with the ratchet, one end of the abutting portion is provided with a second abutting end abutting against the first abutting end, and a second elastic member is provided between the other end of the abutting portion and the claw portion;

[0022] The two second damping members are connected in synchronous rotation.

[0023] Based on the above technical solution: the pawl is arranged on the inner side of the ratchet to facilitate installation, and a supporting portion is provided on one of the second damping members to drive the pawl and the ratchet as well as the pawl and the second damping member to form a stable matching relationship, so that when the force arm is reset, the three rotate synchronously and slowly reset; by setting up two second damping members for synchronous rotation connection, the pawl can drive the two second damping members to rotate synchronously by abutting against one of the second damping members.

[0024] A further solution is that a central shaft extending in the front-to-back direction is provided between the second damping member and the connecting seat, the second damping member is rotationally connected to the central shaft, and the central shaft passes through the ratchet, the second damping member and the first damping member.

[0025] Further solution: A connecting column extending in the front-to-back direction is provided in the middle of the pawl, the front and rear ends of the connecting column are respectively inserted into the two second damping members, and the pawl is connected to the two second damping members for synchronous rotation through the connecting column.

[0026] A further solution is that the second damping member is provided with a second damping surface, the first damping member is provided with a first damping surface, and the first damping surface is in surface contact with the second damping surface.

[0027] Based on the above technical solution: the second damping member provides more stable friction resistance by surface contact with the first damping member, so that the two force arms can be reset more stably and slowly, avoiding collision and injury to the user.

[0028] A further solution is that the connecting seat is formed by splicing the front half shell and the rear half shell and fixedly connected by bolts, and the ratchet pawl assembly and the damping assembly are clamped between the front half shell and the rear half shell.

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

[0030] A further solution: the upper side of the connecting seat is provided with left and right elastic member connecting parts, and the lower side is provided with left and right force arm connecting parts. The two first elastic members are respectively connected to the corresponding elastic member connecting parts at one end close to the connecting seat, and the two force arms are respectively connected to the two force arm connecting parts.

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

[0032] The beneficial effects of the present invention are:

[0033] The arm trainer provided by the present invention has two force arms respectively arranged on the left and right sides of the connecting base, and each force arm is rotatably connected to the connecting base, and each force arm is provided with an adjustment component for adjusting the elastic resistance of the first elastic part corresponding thereto, so that the user can adjust the elastic resistance of the first elastic part through the adjustment component according to specific exercise needs to achieve better exercise effects; by setting two groups of adjustment components to adjust the elastic resistance of the two first elastic parts respectively, it is convenient for the user to adjust so that the elastic resistance of the two force arms is balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

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

[0036] Figure 2 It is a schematic diagram of the explosion structure of an arm strengthener of the present invention.

[0037] Figure 3 It is a schematic diagram of the exploded structure of the damping assembly and the ratchet pawl assembly.

[0038] Figure 4 It is a schematic diagram of the cross-sectional structure of an arm strengthener of the present invention.

[0039] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at point A.

[0040] Description of the numbers in the figure:

[0041] 1-connecting seat; 11-front half shell; 12-rear half shell; 13-center axis; 14-elastic member connecting part; 2-lever; 21-hand grip; 22-screw; 221-knob; 23-nut seat; 231-guide block; 24-guide groove; 3-first damping member; 4-second damping member; 41-abutment portion; 411-second abutment end; 412-second elastic member; 413-connecting column; 5-ratchet; 6-pawl; 61-first abutment end; 62-claw tooth portion; 7-first elastic member. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

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

[0044] Connecting seat 1;

[0045] Two force arms 2 are respectively arranged on the left and right sides of the connecting base 1, and each of the force arms 2 is rotatably connected to the connecting base 1; a first elastic member 7 is provided between each of the force arms 2 and the connecting base 1, and the first elastic member 7 can specifically be an arm force spring; and

[0046] Two groups of adjustment components are respectively arranged on the two force arms 2, and each group of the adjustment components is used to adjust the elastic resistance of the first elastic member 7 corresponding thereto.

[0047] In order to facilitate user operation, a hand grip 21 is provided on the lever arm 2 .

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

[0049] The two ends of the first elastic member 7 are respectively connected to the nut seat 23 and the connecting seat 1. The elastic resistance of the first elastic member 7 is adjusted by rotating the screw 22 to move the nut seat 23 closer to or farther from the connecting seat 1. In a specific structure, the screw 22 is coaxially arranged with the lever 2, and a knob 221 is provided at the outer end of the screw 22 to facilitate the user's rotation of the screw 22. The guide assembly includes a guide block 231 provided on the nut seat 23 and a guide slot 24 provided on the lever 2. The guide block 231 is located in the guide slot 24, and the first elastic member 7 is connected to the guide block 231.

[0050] The connecting base 1 is provided with left and right elastic member connecting portions 14 on its upper side, and left and right force arm 2 connecting portions on its lower side. The two first elastic members 7, one end of which is closest to the connecting base 1, are connected to the corresponding elastic member connecting portions 14, and the two force arms 2 are connected to the two force arm 2 connecting portions. The elastic member connecting portion 14 is specifically a hooking shaft, and the first elastic member 7 is an arm force spring, which is hooked to the hooking shaft.

[0051] In some embodiments, such as Figures 1 to 5 As shown, in order to prevent the two force arms 2 from hitting the user and causing injury due to rapid rebound when they are reset under the elastic resistance of the two second elastic members 412, an arm exerciser of this embodiment further includes:

[0052] Two groups of ratchet 5 pawl 6 assemblies, the two groups of ratchet 5 pawl 6 assemblies are respectively arranged between the two force arms 2 and the connecting seat 1, and the two groups of ratchet 5 pawl 6 assemblies are symmetrically arranged on the left and right; the ratchet 5 pawl 6 assembly includes a ratchet 5 arranged on the force arm 2 and a pawl 6 arranged on the connecting seat 1, and a damping assembly is provided between the pawl 6 and the connecting seat 1, and the damping assembly includes a first damping member 3 arranged on the connecting seat 1 and a second damping member 4 cooperating with the pawl 6; the cooperation of the ratchet 5 pawl 6 enables the ratchet 5 to rotate smoothly relative to the pawl 6 when the user drives the two force arms 2 to approach each other; when the force arm 2 is reset, the pawl 6 will be driven to rotate synchronously through the ratchet 5 connected to it; the force arm 2 is fixedly connected to the corresponding ratchet 5.

[0053] Specifically, when an external force drives the two force arms 2 to move closer to each other, each force arm 2 drives the ratchet 5 to rotate relative to the corresponding pawl 6, and the two first elastic members 7 respectively provide elastic resistance for the two force arms 2 to move away from each other and reset; when the two force arms 2 move away from each other and reset under the action of the two first elastic members 7, each force arm 2 drives the pawl 6 and the second damping member 4 cooperating with the pawl 6 to rotate and reset relative to the first damping member 3 through the ratchet 5, and the first damping member 3 provides a damping force for the corresponding ratchet 5 to rotate and reset through frictional contact with the second damping member 4, so that the two force arms 2 are slowly reset, which can prevent the force arms 2 from hitting people and causing injuries when resetting.

[0054] In some embodiments, such as Figures 2 to 5 As shown, there are two second damping members 4, located on the front and rear sides of the pawl 6; there are two first damping members 3, and the two first damping members 3 are respectively matched with the two second damping members 4, and the two second damping members 4 are clamped between the two first damping members 3. As a result, the two first damping members 3 are in frictional contact with the two second damping members 4.

[0055] In some specific embodiments, in order to facilitate assembly, the pawl 6 is arranged on the inner side of the ratchet 5, and a plurality of ratchet teeth are arranged around the inner side of the ratchet 5; one end of the pawl 6 is provided with a claw portion 62 that cooperates with the ratchet teeth, and the other end is provided with a first abutting end 61;

[0056] One of the second damping members 4 is provided with a supporting portion 41 for driving the claw tooth portion 62 to cooperate with the ratchet teeth, and one end of the supporting portion 41 is provided with a second supporting end 411 abutting on the first supporting end 61, and a second elastic member 412 is provided between the other end of the supporting portion 41 and the claw tooth portion 62; the second elastic member 412 can be specifically a spring, and the supporting portion 41 can be set to be semicircular, and the circumferential surface around its outer side contacts and cooperates with the inner side of the ratchet 5, so that when the force arm 2 is reset, the ratchet 5, the pawl 6 and the second damping member 4 form a synchronous rotation relationship through the above structure.

[0057] The two second damping members 4 are connected for synchronous rotation. Specifically, a connecting column 413 extending in the front-to-back direction is provided in the middle of the pawl 6. The front and rear ends of the connecting column 413 are respectively inserted into the two second damping members 4. The pawl 6 is connected for synchronous rotation with the two second damping members 4 via the connecting column 413.

[0058] A central shaft 13 extending in the front-to-rear direction is provided between the second damping member 4 and the connecting seat 1 , the second damping member 4 is rotationally connected to the central shaft 13 , and the central shaft 13 is provided through the ratchet 5 , the second damping member 4 and the first damping member 3 .

[0059] In some embodiments, such as Figures 2 to 5 As shown, the second damping member 4 is provided with a second damping surface, and the first damping member 3 is provided with a first damping surface, and the first damping surface and the second damping surface are in surface contact. According to specific needs, a plurality of first damping members 3 can be provided, and two adjacent first damping members 3 are in surface contact.

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

[0061] Working principle description:

[0062] When using the arm trainer for fitness, the user holds the two lever arms 2 with both hands respectively, drives the two lever arms 2 closer to each other, so that the two first elastic members 7 are stretched to generate elastic resistance. When the user releases the force on the two lever arms 2, the two lever arms 2 are reset under the action of the elastic resistance. At this time, each lever arm 2 drives the pawl 6 and the second damping member 4 to slowly rotate and reset relative to the first damping member 3 through the ratchet 5. The first damping member 3 is in frictional contact with the second damping member 4, thereby giving it a friction damping force during rotation, so that the two lever arms 2 are slowly reset, which can prevent the lever arms 2 from hitting people and causing injuries when resetting.

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

[0064] The present invention is not limited to the above-mentioned optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be arbitrarily combined. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. An arm trainer, characterized in that: include: Connecting seat; Two force arms are respectively provided on the left and right sides of the connecting seat, each of the force arms is rotatably connected to the connecting seat; a first elastic member is provided between each of the force arms and the connecting seat; and, Two groups of adjustment components are respectively arranged on the two force arms, and each group of the adjustment components is used to adjust the elastic resistance of the first elastic member corresponding thereto.

2. An arm exerciser according to claim 1, characterized in that: The adjustment assembly includes a screw rod rotatably arranged on the lever arm and a nut seat threadedly connected to the screw rod, and a guide assembly is provided between the nut seat and the lever arm; The two ends of the first elastic member are respectively connected to the nut seat and the connecting seat, and the elastic resistance of the first elastic member is adjusted by rotating the screw rod to make the nut seat move closer to or away from the connecting seat.

3. An arm exerciser according to claim 2, characterized in that: The guide assembly includes a guide block arranged on the nut seat and a guide groove arranged on the force arm, the guide block is located in the guide groove, and the first elastic member is connected to the guide block.

4. An arm strength device according to claim 1, 2 or 3, characterized in that: Also includes: Two groups of ratchet and pawl assemblies, the two groups of ratchet and pawl assemblies are respectively arranged between the two force arms and the connecting seat, and the two groups of ratchet and pawl assemblies are symmetrically arranged on both sides; the ratchet and pawl assemblies include a ratchet arranged on the force arm and a pawl arranged on the connecting seat, a damping assembly is provided between the pawl and the connecting seat, and the damping assembly includes a first damping member arranged on the connecting seat and a second damping member cooperating with the pawl; When an external force drives the two force arms to move closer to each other, each force arm drives the ratchet to rotate relative to its corresponding pawl, and the two first elastic members respectively provide elastic resistance to the two force arms to move away from each other and reset; when the two force arms move away from each other and reset under the action of the two first elastic members, each force arm drives the pawl and the second damping member cooperating with the pawl to rotate and reset relative to the first damping member through the ratchet, and the first damping member provides a damping force for the corresponding ratchet to rotate and reset through frictional contact with the second damping member.

5. An arm exerciser according to claim 4, characterized in that: There are two second damping members, which are respectively located at the front and rear sides of the pawl; there are two first damping members, the two first damping members respectively cooperate with the two second damping members, and the two second damping members are clamped between the two first damping members.

6. The arm exerciser according to claim 4, characterized in that: The pawl is arranged on the inner side of the ratchet wheel, and a plurality of ratchet teeth are arranged around the inner side of the ratchet wheel; one end of the pawl is provided with a claw tooth portion that cooperates with the ratchet teeth, and the other end is provided with a first abutting end; One of the second damping members is provided with an abutting portion for driving the claw portion to cooperate with the ratchet, one end of the abutting portion is provided with a second abutting end abutting against the first abutting end, and a second elastic member is provided between the other end of the abutting portion and the claw portion; The two second damping members are connected in synchronous rotation.

7. The arm exerciser according to claim 4, characterized in that: A central shaft extending in the front-to-back 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. An arm exerciser according to claim 7, characterized in that: A connecting column extending in the front-to-rear direction is provided in the middle of the pawl, and the front and rear ends of the connecting column are respectively inserted into the two second damping members, and the pawl is connected to the two second damping members for synchronous rotation through the connecting column.

9. The arm exerciser according to claim 4, characterized in that: The second damping member is provided with a second damping surface, the first damping member is provided with a first damping surface, and the first damping surface is in surface contact with the second damping surface.

10. The arm exerciser according to claim 4, characterized in that: The connecting seat is formed by splicing the front half shell and the rear half shell and fixedly connected by bolts, and the ratchet pawl assembly and the damping assembly are clamped between the front half shell and the rear half shell; The upper side of the connecting seat is provided with left and right elastic member connecting parts, and the lower side is provided with left and right force arm connecting parts. The ends of the two first elastic members close to the connecting seat are respectively connected to the corresponding two elastic member connecting parts, and the two force arms are respectively connected to the two force arm connecting parts.

Images