Forearm isolated training instrument
By designing multi-stage effort-intensive gear sets and forearm isolation training equipment without overhanging weight structures, the problems of poor training results and safety hazards of forearm muscle groups in the existing technology are solved, and efficient and safe training results of muscle groups are achieved.
Patent Information
- Application Number
- CN202422185056.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The existing forearm muscle training devices are difficult to achieve efficient isolated training, and there are safety risks, which cannot meet the needs of one-armed people.
An forearm isolated training device was designed, using a multi-stage effort-intensive gear set and a dangling weightless structure, providing multi-stage torque resistance through the meshing of the shaft and gear, achieving precise training intensity adjustment and infinite continuous training stroke.
It achieves efficient isolated training of forearm muscle groups, avoids the safety risk of heavy objects falling, is suitable for one-armed people, and the training effect is significantly improved.
Smart Images
Figure CN223112244U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a fitness apparatus, which is particularly suitable for training the forearms. Background Art
[0002] The muscles on the forearms mainly function to control the clenching and opening of the fingers and the bending and straightening of the wrists. Specifically, the muscle groups on the forearms can be further divided into the extensor carpi radialis and the flexor carpi radialis. Among them, the extensor carpi radialis on the outer side of the forearm functions to open the palm and bend the wrist outward; the flexor carpi radialis on the inner side of the forearm does the opposite, responsible for clenching the palm and bending the wrist inward.
[0003] The main function of the forearm muscles is the gripping force. All gripping actions involving the palm and fingers require the participation of the forearm muscle groups. If one has well-developed forearm muscle groups, it is of great help for daily physical work, rehabilitation training after injuries, or professional sports competitions.
[0004] Since the forearm muscle groups belong to the small endurance muscle groups and all actions need to be coordinated with other large muscle groups, it is difficult for ordinary actions to isolate and deeply stimulate the forearm muscle groups, which results in a very slow or even stagnant growth rate of the forearm muscle groups.
[0005] At present, the most effective method for training the forearm muscle groups is wrist curling. Hang heavy objects on a round bar, and alternately rotate the round bar with both hands (continuously rotate forward or backward), and the heavy objects provide torque resistance. However, for such a simple training device to suspend the round bar and the heavy objects as a whole, the deltoid muscle of the shoulder needs to provide lateral support. The deltoid muscle is characterized by small load-bearing capacity and easy fatigue. Often, before the forearms reach the training intensity, the deltoid muscle can no longer support. This will inevitably lead to poor training effect for the forearms. In addition, the travel of the winding training is limited by the length of the rope (usually 1.5 meters), and it cannot meet the stimulation requirements of low weight and high repetitions; the swaying of the suspended heavy objects will cause the balance muscle groups of the trainer to participate in the force generation, which is also not conducive to the isolated and pure force generation of the forearm muscle groups and affects the effect. At the same time, disabled people with only one arm cannot use this method. Content of the Utility Model
[0006] The purpose of the utility model is to provide a forearm isolation training apparatus to make up for the deficiencies of the existing technology.
[0007] The technical solution adopted by the utility model to achieve the purpose is as follows:
[0008] The forearm isolation training apparatus is characterized in that: it includes a bracket, the bracket includes two vertical rods, there is a roller between the two vertical rods, and bearings are arranged between the roller and the vertical rods; a primary gear is arranged at the end of the roller.
[0009] There is an installation rod outside the vertical rod, and there are installation holes on both the installation rod and the vertical rod; a rotating shaft is provided to pass through the installation holes, and the rotating shaft can rotate and axially move within the installation holes; there is a secondary gear on the rotating shaft.
[0010] Preferably, a push-pull turntable is provided at the end of the rotating shaft; there is a limit retaining disc on the rotating shaft.
[0011] Preferably, both the primary gear and the secondary gear are straight gears.
[0012] The beneficial effects of the present utility model are as follows:
[0013] The structure of the present utility model is stable. By using a multi-stage laborious gear set to provide multi-stage torque resistance, the resistance adjustment is convenient and fast, and it can provide accurate training intensity. Moreover, the training stroke has infinite continuity, and the small arm muscle group can be completely isolated for targeted training and strengthening. In addition, the design without hanging heavy objects also avoids the safety risks of rope breakage and heavy object falling. This design is also suitable for single-arm people.
[0014] The following is a further description of the present utility model through embodiments in conjunction with the drawings. Description of the Drawings
[0015] Figure 1 It is a schematic structural diagram of the embodiment.
[0016] Figure 2 It is a schematic structural diagram of the first-stage transmission of the embodiment.
[0017] Figure 3 It is a schematic structural diagram of the second-stage transmission of the embodiment. Detailed Embodiment
[0018] Embodiment:
[0019] 1 is a bracket, 2 is a vertical rod, 3 is an installation rod, 4 is a roller, 5 is a bearing, 6 is a primary gear, 7 is an installation hole, 8 is a rotating shaft, 9 is a secondary gear, 10 is a push-pull turntable, 11 is a limit retaining disc, 12 is a tertiary gear, 13 is a push-pull turntable, 14 is a rotating shaft, 15 is an installation hole, 16 is a limit retaining disc.
[0020] As Figure 1 shown, the trainer stands or sits, holds the roller 4 with both hands, and alternately rotates the roller 4. The roller 4 rotates within the bearing 5 and drives the primary gear 6 to rotate. During the rotation process, the small arm muscle group can be trained. Continuous forward rotation or continuous reverse rotation can be selected to train the extensor carpi radialis and the flexor carpi respectively. The duration of rotation is not limited and can be determined according to personal circumstances.
[0021] If it is necessary to increase the training intensity, as Figure 2As shown, the push-pull turntable 10 can be pulled to axially move the rotating shaft 8 inward in the mounting hole 7 until the secondary gear 9 meshes with the primary gear 6. Since the number of teeth of the secondary gear 9 is less than that of the primary gear 6, this increases the rotational resistance of the roller 4, that is, it is more difficult to rotate the roller 4, achieving the effect of increasing the training intensity.
[0022] If during the meshing process of the secondary gear 9 and the primary gear 6, the position is not appropriate and they cannot mesh smoothly, slightly rotate the push-pull turntable 10 to fine-tune the circumferential position and they can mesh smoothly. The limit turntable 11 can, on the one hand, prevent the rotating shaft 8 from falling off, and on the other hand, accurately position the meshing position of the secondary gear 9.
[0023] If it is necessary to further increase the training intensity, as Figure 3 shown, pull the push-pull turntable 13 to axially move the rotating shaft 14 inward in the mounting hole 15 until the tertiary gear 12 meshes with the secondary gear 9. Since the number of teeth of the tertiary gear 12 is less than that of the secondary gear 9, this increases the rotational resistance of the roller 4 again, that is, it is more difficult to rotate the roller 4, achieving the effect of further increasing the training intensity.
[0024] If it is necessary to reduce the training intensity at this time, push the push-pull turntable 13 and the push-pull turntable 10 to release the meshing relationship between the gears.
[0025] In this embodiment, a two-stage laborious gear set is provided, and in actual application, the number of gear sets can also be increased or decreased according to needs.
[0026] In this embodiment, the laborious gear set is arranged on both sides of the vertical rod 2, and it can also be arranged on one side in actual application.
Claims
1. Forearm isolation training apparatus, characterized in that: It includes a bracket. The bracket includes two vertical rods. There is a rotating roller between the two vertical rods, and bearings are arranged between the rotating roller and the vertical rods. A primary gear is arranged at the end of the rotating roller; There is an installation rod outside the vertical rod, and there are installation holes on both the installation rod and the vertical rod. A rotating shaft is arranged to pass through the installation hole, and the rotating shaft can rotate and axially move in the installation hole. There is a secondary gear on the rotating shaft.
2. The isolated forearm training apparatus according to claim 1, characterized in that A push-pull turntable is arranged at the end of the rotating shaft; there is a limiting stop disk on the rotating shaft.
3. The isolated forearm training apparatus according to claim 1 or 2, characterized in that Both the primary gear and the secondary gear are spur gears.