Adjustable arm strength device

Abstract

The utility model belongs to the technical field of arm strength devices, and particularly relates to an adjustable arm strength device which comprises a main spring, grips are arranged at the two ends of the main spring, mounting rods are fixedly connected to the two ends of the main spring respectively, connecting holes are formed in the grips, the mounting rods are arranged in the connecting holes in a penetrating mode, and at least two positioning portions are arranged on the mounting rods at intervals. The positioning parts are sequentially arranged at intervals in the length direction of the mounting rod, a positioning assembly and an elastic piece are arranged on the grip, the positioning assembly is slidably arranged on the grip, one end of the positioning assembly penetrates into the connecting hole and is matched with the positioning parts, and a control part is arranged at the other end of the positioning assembly and is exposed out of the outer side of the grip; the elastic piece drives the positioning assembly to slide into the grip and is matched with the positioning part, so that the grip and the mounting rod are relatively fixed; the positioning assembly can be pulled to slide towards the outer side of the grip through the control part, and the positioning assembly is separated from the positioning hole, so that the grip can slide in the length direction of the mounting rod, and the adjustable arm strength device is simple in structure and high in safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of arm strengtheners, and in particular relates to an adjustable arm strengthener. Background Art

[0002] The arm strengthener, also known as the grip bar, is used to exercise the arm muscles, mainly to exercise the arm strength and chest muscles, and to assist in exercising the wrist strength.

[0003] The handles on traditional arm trainers are mostly fixed at both ends of the main spring, and the exercise intensity of the arm trainer is constant during exercise. Now, the handles on some arm trainers on the market can be movable, and the user can adjust the distance between the handle and the main spring to increase or decrease the exercise intensity of the arm trainer. For example, an arm trainer disclosed in Chinese utility model patent CN202322506174.2 includes a body assembly, which includes a torsion spring and two handles. The two handles are connected to the two ends of the torsion spring. The handle includes a handle body, a gripping component and a locking mechanism. The gripping component is slidably mounted on the gripping body, and the gripping body is provided with a plurality of positioning holes arranged along its length direction. The locking mechanism includes a button, an elastic member and a limit member. The button is arranged on the gripping component and can be rotated between a first state and a second state. The limit member is arranged on the button. When the button is in the first state, the limit member passes through the positioning hole to fix the gripping component on the gripping body. When the button is in the second state, the limit member disengages from the positioning hole, so that the gripping component can slide on the gripping body, and the elastic member drives the button to rotate to the first state.

[0004] Although the button in the above structure can facilitate the control of the limit part from being separated from the positioning hole, the button is easily touched by mistake when the user uses the arm trainer for exercise, resulting in the gripping part easily moving relative to the gripping body accidentally during use, or even the gripping part accidentally separating from the gripping body, thereby causing accidents. Summary of the Invention

[0005] In order to overcome the defects in the prior art, the purpose of the present invention is to provide an adjustable arm strengthener with simple structure and high safety.

[0006] The purpose of this utility model is achieved in this way:

[0007] An adjustable arm strength device includes a main spring, and handles are provided at both ends of the main spring. The two ends of the main spring are respectively fixedly connected to a mounting rod, and a connecting hole is provided in the handle. The mounting rod is inserted into the connecting hole, and at least two positioning parts are arranged at intervals on the mounting rod. The positioning parts are arranged in sequence at intervals in the length direction of the mounting rod. A positioning assembly and an elastic part are provided on the handle. The positioning assembly is slidably arranged on the handle, one end of the positioning assembly is inserted into the connecting hole and cooperates with the positioning part, and the other end of the positioning assembly is provided with a control part, which is exposed on the outside of the handle. The elastic part drives the positioning assembly to slide into the handle and cooperate with the positioning part, so that the handle and the mounting rod are relatively fixed; the positioning assembly can be pulled to slide to the outside of the handle by the control part and the positioning assembly can be disengaged from the positioning hole, so that the handle can slide along the length direction of the mounting rod.

[0008] The utility model is further configured as follows: a first guide portion is provided on the side wall of the connecting hole, and a second guide portion adapted to the first guide portion is provided on the side wall of the mounting rod. The first guide portion and the second guide portion cooperate to guide the movement of the handle, and enable different positioning portions to move to the end of the positioning assembly in sequence.

[0009] The present invention is further configured as follows: the second guide portion is a plane on the side wall of the mounting rod, the positioning portion is arranged on the second guide portion, and the side wall of the first guide portion abuts against the plane.

[0010] The present invention is further configured as follows: at least two first guide portions are spaced apart on the side wall of the connection hole, and the first guide portions extend in the length direction of the connection hole and respectively abut against the second guide portions.

[0011] The utility model is further configured as follows: a plurality of gripping grooves corresponding to the user's fingers are provided on one side of the handle corresponding to the first guide portion.

[0012] The utility model is further configured as follows: a mounting groove is provided on the side wall of the connecting hole, a guide hole is provided at the bottom of the mounting groove, the positioning component is slidably connected to the guide hole, and a mounting protrusion is provided on the positioning component, the elastic member is provided in the placement groove, and the two ends of the elastic member respectively abut against the bottom of the mounting groove and the mounting protrusion.

[0013] The present invention is further configured as follows: the positioning assembly includes a detachably connected latch member and a control member, the mounting protrusion and the control member are respectively arranged on the latch member and the control member and are respectively located at both ends of the guide hole, and the mounting protrusion and the control member respectively extend to the side of the guide hole and prevent the latch member and the control member from passing through the guide hole.

[0014] The utility model is further configured as follows: an assembly hole is further provided on the side wall of the connecting hole, the assembly hole is located in the extension direction of the guide hole, and the latch member can pass through the assembly hole and the guide hole and be connected to the control member.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The elastic part in the utility model drives the positioning assembly to slide into the handle and cooperate with the positioning part, so that the handle and the mounting rod are relatively fixed. The structure is simple and convenient for assembly and production. When adjusting the arm strength trainer, the positioning assembly needs to be pulled toward the outside of the handle. During the use of the arm strength trainer, it is not easy for the positioning assembly to be separated from the positioning part due to accidents, which is beneficial to improving the safety of the arm strength trainer.

[0017] 2. The arrangement of the first guide portion and the second guide portion in the present invention facilitates the stable sliding of the handle and the mounting rod, avoids deflection or misalignment of the positioning assembly and the positioning portion during adjustment, and is beneficial for the elastic member to drive the positioning assembly and the positioning portion to automatically cooperate during adjustment, making it convenient for the user to adjust the arm strength trainer; the planar structure facilitates the production and processing of the second guide portion, and is also beneficial for the production and processing of the positioning portion.

[0018] 3. The at least two first guide parts in the present invention are convenient for reducing the material used in the handle and reducing production costs. The structure can also reduce the local thickness of the handle, avoiding the deformation of the first guide part during the injection molding process affecting the coordination between the first guide part and the second guide part. When the user places his fingers in the grip groove and uses the arm strengthener, the main spring will bend to both sides of the first guide part, reducing the relative force between the first guide part and the second guide part during exercise, avoiding the first guide part and the second guide part being damaged due to excessive force, and helping to extend the service life of the arm strengthener.

[0019] 4. The setting of the mounting groove in the present invention facilitates the positioning and installation of the elastic member and increases the installation space of the elastic member, which is beneficial to increasing the range of motion of the positioning component and making the positioning component and the positioning part cooperate stably, avoiding the positioning component from being accidentally touched and causing the positioning component and the positioning part to be accidentally separated.

[0020] 5. The detachably connected latch parts and control parts in the present invention facilitate the assembly and disassembly of the positioning components, and facilitate the production and maintenance of the arm strengthener. The setting of the mounting flange facilitates the stable installation of the elastic part; the setting of the assembly hole makes it easy for the manufacturer to control the coordination between the latch parts and the guide holes, and facilitates the assembly and production of the arm strengthener. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 It is an explosion diagram of the utility model;

[0023] Figure 3 It is a partial cross-sectional view of the utility model;

[0024] Figure 4It is a partial cross-sectional view of the connection structure between the mounting rod and the main spring in the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the handle of the utility model;

[0026] Figure 6 It is a cross-sectional view of the handle of the present invention.

[0027] The meaning of the numbers in the figure are: 1-main spring; 2-mounting rod; 21-second guide part; 22-positioning part; 23-fixing sleeve; 3-handle; 31-connecting hole; 32-first guide part; 33-guide hole; 34-mounting slot; 35-movable slot; 36-assembly hole; 37-gripping slot; 4-positioning assembly; 41-latch member; 42-control member; 411-mounting protrusion; 421-control member; 5-elastic member. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] See also Figures 1 to 6 As shown, an adjustable arm strength device includes a main spring 1, and handles 3 are provided at both ends of the main spring 1. The two ends of the main spring 1 are respectively fixedly connected to a mounting rod 2, and a connecting hole 31 is provided in the handle 3. The mounting rod 2 is inserted into the connecting hole 31, and at least two positioning parts 22 are arranged at intervals on the mounting rod 2. The positioning parts 22 are arranged in sequence at intervals in the length direction of the mounting rod 2, and a positioning component 4 and an elastic member 5 are provided on the handle 3. The positioning component 4 is slidably arranged on the handle 3, one end of the positioning component 4 is inserted into the connecting hole 31 and cooperates with the positioning part 22, and the other end of the positioning component 4 is provided with a control part 421, and the control part 421 is exposed on the outside of the handle 3, and the elastic member 5 drives the positioning component 4 to slide into the handle 3 and cooperate with the positioning part 22, so that the handle 3 and the mounting rod 2 are relatively fixed; the positioning component 4 can be pulled to slide to the outside of the handle 3 and the positioning component 4 can be disengaged from the positioning hole through the control part 421, so that the handle 3 can slide along the length direction of the mounting rod 2.

[0030] In the above structure, the elastic member 5 drives the positioning assembly 4 to slide into the handle 3 and cooperate with the positioning part 22, so that the handle 3 and the mounting rod 2 are relatively fixed. The structure is simple and convenient for assembly and production. When adjusting the arm strength trainer, the positioning assembly 4 needs to be pulled toward the outside of the handle 3. During the use of the arm strength trainer, it is not easy for the positioning assembly 4 to be detached from the positioning part 22 due to accidents, which is beneficial to improving the safety of the arm strength trainer.

[0031] In the present invention, the main spring 1 is a cylindrical tension spring, and the mounting rods 2 are respectively passed through the two ends of the main spring 1 and fixed relative to the main spring 1, and a fixing sleeve 23 is fixedly provided on the mounting rod 2. The main spring 1 and the fixing sleeve 23 respectively abut against the inner and outer sides of the main spring 1 and prevent the connection position between the main spring 1 and the fixing sleeve 23 from loosening or damage.

[0032] A first guide portion 32 is provided on the side wall of the connecting hole 31, and a second guide portion 21 adapted to the first guide portion 32 is provided on the side wall of the mounting rod 2. The first guide portion 32 cooperates with the second guide portion 21 to guide the movement of the handle 3, and enables different positioning portions 22 to move to the end of the positioning component 4 in sequence. The setting of the first guide portion 32 and the second guide portion 21 facilitates the stable sliding of the handle 3 and the mounting rod 2, avoiding deflection or misalignment of the positioning component 4 and the positioning portion 22 during the adjustment process, and is beneficial for the elastic member 5 to drive the positioning component 4 and the positioning portion 22 to automatically cooperate during the adjustment process, so as to facilitate the user to adjust the arm strength device.

[0033] In the present invention, the first guide portion 32 and the second guide portion 21 can be mutually cooperating protrusions and grooves. In this embodiment, the second guide portion 21 is a plane on the side wall of the mounting rod 2, and the positioning portion 22 is arranged on the second guide portion 21. The first guide portion 32 is a protrusion on the side wall of the connecting hole 31. The side wall of the first guide portion 32 rests on the plane, and the structure of the plane facilitates the production and processing of the second guide portion 21, and is also conducive to the production and processing of the positioning portion 22.

[0034] At least two first guide portions 32 are spaced apart on the side wall of the connecting hole 31. The first guide portions 32 extend in the length direction of the connecting hole 31 and respectively abut against the second guide portions 21. At least two first guide portions 32 facilitate reducing the material used in the handle 3 and reducing production costs. This structure can also reduce the local thickness of the handle 3, thereby preventing deformation of the first guide portion 32 during the injection molding process from affecting the fit between the first guide portion 32 and the second guide portion 21. In the drawings of the specification of this embodiment, two first guide portions 32 are spaced apart on the side wall of the connecting hole 31.

[0035] In the present invention, a plurality of gripping grooves 37 corresponding to the user's fingers are provided on one side of the handle 3 corresponding to the first guide part 32. When the user's fingers are placed in the gripping grooves 37 and the arm strengthener is used, the main spring 1 will bend toward both sides of the first guide part 32, reducing the relative force between the first guide part 32 and the second guide part 21 during exercise, avoiding damage to the first guide part 32 and the second guide part 21 due to excessive force, and helping to extend the service life of the arm strengthener.

[0036] The side wall of the connecting hole 31 is provided with a mounting groove 34, and the bottom of the mounting groove 34 is provided with a guide hole 33. The positioning component 4 is slidably connected to the guide hole 33, and the positioning component 4 is provided with a mounting protrusion 411. The elastic member 5 is arranged in the placement groove, and the two ends of the elastic member 5 respectively abut against the bottom of the mounting groove 34 and the mounting protrusion 411. The setting of the mounting groove 34 facilitates the positioning and installation of the elastic member 5, and increases the installation space of the elastic member 5, which is conducive to increasing the range of movement of the positioning component 4 and making the positioning component 4 stably cooperate with the positioning part 22, thereby avoiding the positioning component 4 being accidentally touched and causing the positioning component 4 to be accidentally separated from the positioning part 22.

[0037] The positioning assembly 4 in the present invention includes a detachably connected latch member 41 and a control member 42. The mounting protrusion 411 and the control portion 421 are respectively arranged on the latch member 41 and the control member 42 and are respectively located at both ends of the guide hole 33. The mounting protrusion 411 and the control portion 421 extend to the sides of the guide hole 33 respectively and prevent the latch member 41 and the control member 42 from passing through the guide hole 33. The detachably connected latch member 41 and the control member 42 facilitate the assembly and disassembly of the positioning assembly 4 and facilitate the production and maintenance of the arm strength trainer. The setting of the mounting protrusion 411 facilitates the stable installation of the elastic member 5.

[0038] Preferably, an assembly hole 36 is also provided on the side wall of the connecting hole 31. The assembly hole 36 is located in the extension direction of the guide hole 33. The latch part 41 can pass through the assembly hole 36 and the guide hole 33 and be connected to the control part 42. The setting of the assembly hole 36 makes it convenient for the manufacturer to control the coordination between the latch part 41 and the guide hole 33, thereby facilitating the assembly and production of the arm strengthener.

[0039] In this embodiment, the guide hole 33 is provided with a movable groove 35 at one end close to the outer side of the handle 3. When the elastic member 5 drives the positioning assembly 4 to reset, the end of the control member 42 is passed through the movable groove 35, thereby avoiding the positioning assembly 4 from shaking during use, which is conducive to the stable connection between the handle 3 and the mounting rod 2.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable arm strength device, comprising a main spring (1), with handles (3) provided at both ends of the main spring (1), characterized in that: The two ends of the main spring (1) are respectively fixedly connected to the mounting rod (2), the handle (3) is provided with a connecting hole (31), the mounting rod (2) is inserted into the connecting hole (31), and at least two positioning parts (22) are arranged at intervals on the mounting rod (2), and the positioning parts (22) are arranged in sequence at intervals in the length direction of the mounting rod (2). The handle (3) is provided with a positioning component (4) and an elastic member (5), the positioning component (4) is slidably provided on the handle (3), one end of the positioning component (4) is inserted into the connecting hole (31) and In cooperation with the positioning portion (22), a control portion (421) is provided at the other end of the positioning component (4), and the control portion (421) is exposed outside the handle (3). The elastic member (5) drives the positioning component (4) to slide into the handle (3) and cooperate with the positioning portion (22), thereby fixing the handle (3) and the mounting rod (2) relative to each other; the positioning component (4) can be pulled to slide outside the handle (3) and disengaged from the positioning hole by the control portion (421), thereby allowing the handle (3) to slide along the length direction of the mounting rod (2).

2. The adjustable arm strength device according to claim 1, characterized in that: A first guide portion (32) is provided on the side wall of the connecting hole (31), and a second guide portion (21) adapted to the first guide portion (32) is provided on the side wall of the mounting rod (2). The first guide portion (32) cooperates with the second guide portion (21) to guide the movement of the handle (3) and enables different positioning portions (22) to move to the end of the positioning assembly (4) in sequence.

3. The adjustable arm strength device according to claim 2, characterized in that: The second guide portion (21) is a plane on the side wall of the mounting rod (2), the positioning portion (22) is arranged on the second guide portion (21), and the side wall of the first guide portion (32) abuts against the plane.

4. The adjustable arm strength device according to claim 2, characterized in that: At least two first guide portions (32) are spaced apart on the side wall of the connection hole (31), and the first guide portions (32) extend in the length direction of the connection hole (31) and respectively abut against the second guide portions (21).

5. The adjustable arm strength device according to claim 2, characterized in that: A plurality of gripping grooves (37) corresponding to the user's fingers are provided on one side of the handle (3) corresponding to the first guide portion (32).

6. The adjustable arm strength device according to claim 1, characterized in that: A mounting groove (34) is provided on the side wall of the connecting hole (31), a guide hole (33) is provided at the bottom of the mounting groove (34), a positioning assembly (4) is slidably connected to the guide hole (33), and a mounting protrusion (411) is provided on the positioning assembly (4), the elastic member (5) is arranged in the placement groove, and two ends of the elastic member (5) respectively abut against the bottom of the mounting groove (34) and the mounting protrusion (411).

7. The adjustable arm strength device according to claim 6, characterized in that: The positioning assembly (4) comprises a detachably connected latch member (41) and a control member (42); a mounting protrusion (411) and a control portion (421) are respectively arranged on the latch member (41) and the control member (42) and are respectively located at both ends of the guide hole (33); and the mounting protrusion (411) and the control portion (421) respectively extend toward the side of the guide hole (33) and prevent the latch member (41) and the control member (42) from passing through the guide hole (33).

8. The adjustable arm strength device according to claim 1, characterized in that: An assembly hole (36) is also provided on the side wall of the connecting hole (31), and the assembly hole (36) is located in the extending direction of the guide hole (33). The latch member (41) can pass through the assembly hole (36) and the guide hole (33) and be connected to the control member (42).

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