RU204689U1 - EXPANDER BRUSH, TWO-SIDED - Google Patents

Abstract

The utility model relates to sports equipment and is designed to develop muscle strength, strengthen the ligaments and forearms of a person. Technical result: expanding the functionality of the device through the use of a composite elastic element in the form of a double ring, which, in turn, consists of two elastic elements in the shape of rings made of elastic material and having different modulus of elasticity from each other. The essence of the utility model: contains two elastic elements 1 and 2, made of elastic material in the form of rings with a body of round, oval, or semi-oval cross-section, with an outer diameter of 70-90 mm, with a body thickness of 17-20 mm, having a common central axis of symmetry perpendicular to their planes, fixedly fastened to each other by an adhesive joint and having elastic moduli different from each other. Depending on the position in the hand, elements 1 and 2 provide different resistance to the pressure of the phalanges of the fingers. Adhesive bonding holds elements 1 and 2 together. Positive result: wider range of use. 1 wp f-ly, 1 dwg.

Description

The utility model relates to sports equipment and is designed to develop muscle strength, strengthen the ligaments and forearms of a person.

Currently, a large number of resistance bands and simulators are known for training the muscles and ligaments of the human hands.

Known manual expander "donut" [1] - an analogue made in the form of a ring of elastic material such as rubber with an outer diameter of 60-90 mm, and a body diameter of 20-22 mm. The simplicity of design and efficiency of this device contributed to its widespread adoption. This expander is placed in the hand, wrapped around the fingers and compressed by them, as a result of which it deforms elastically and resists the pressure of the fingers. As a result, the fingers and hand as a whole receive useful physical activity.

The disadvantages of this device can be attributed to the limited functionality, in particular, "the fingers wrapping around the body of the expander are initially strongly bent due to the small diameter of its body, which in turn leads to a small amplitude of their movement during the exercise.

Known expander wrist [2] - an analogue made in the form of two elastic elements in the form of rings, connected by a bridge. The device is placed in the palm, one of the thumb rings supported by the bent index finger, the second is clamped with the rest of the fingers. By clenching and unclenching the fingers, the user trains the muscles and ligaments of the hand. The disadvantage of this device is the small size of the 60 (mm) larger ring, which is unacceptable for some users.

In addition, the manufacture of the bulkhead requires additional technological operations.

As a prototype, a wrist expander was chosen [3] with an elastic element in the form of two rings of elastic material fixedly connected to one another and having different diameters. The user places the device in the palm of the hand, with the smaller-diameter ring under the thumb, and the larger-diameter ring wrapped around the rest.

By clenching and unclenching fingers, the user receives a useful physical activity. The disadvantage of this device is a small amplitude of movement of four fingers, except for the large one, since they are in a bent position due to the relatively small diameter of the expander body.

The technical result achieved when implementing the claimed device is to expand its functionality, due to the use of a composite elastic element in the form of a ring, which, in turn, consists of two elastic elements in the form of rings made of an elastic material.

To achieve the technical result, the device introduced: two elastic elements located on a common central axis of symmetry perpendicular to their planes, each of which has the shape of a ring with a body of round (torus), oval, or semi-oval cross-section, with an outer diameter of 70-90 mm, body thickness 17-20 mm, rigidly fastened to one another, having different elastic moduli from each other and making up a double-sided wrist expander. The claimed device is illustrated by the description and drawing.

FIG. 1 shows a diagram of the device, which has the following functional elements:

1, 2 elastic elements.

The operation of the claimed device when performing exercises for training the muscles and Christmas time of the hand is as follows.

The user places the pre-sized device in the hand with an elastic element 1 on the palm and wraps around it with his fingers. With a properly sized device, the fingers are bent and fit the elastic element with 2 distal phalanges. Then the user compresses the fingers, while the distal phalanges first compress the elastic element 2, and the middle and proximal phalanges of the elastic element 1, while the distal phalanges work with a large amplitude.

As a result of elastic deformation, the elastic elements 1 and 2 resist the pressure of the fingers. When unclenching the fingers by the user, elements 1 and 2 take their original shape.

When the user turns the device over with the elastic element 2 on the palm, the fingers receive a different load, since the elastic elements have a different modulus of elasticity.

The distal phalanges of the fingers cannot develop effort, as the middle phalanges and an increase in the load on them leads to an increase in it for the entire hand, which is applicable when moving from warm-up to training. By clenching and unclenching fingers, the user receives a useful physical activity.

The above distinguishes the claimed device from the known analogs and prototype and allows the achievement of a technical result with a positive effect.

As an option, it is proposed to apply projections and recesses for palm massage to the outer surface of the device.

Implementation (for clarification only):

The claimed device is made using known materials (see Fig. 1).

Elements 1 and 2 are made of rubber or silicone, held together with rubber glue. The device has no other features.

Information sources:

1.URL: https: //krsk.au.ru/13382572-espander-kistevoj-bublik-20-kg/.

2. Patent RU 195322 dated 05.12.2019

3. Patent RU 197226 dated 03/02/2020 - prototype.

Claims (2)

1. A double-sided wrist expander, which includes two elastic elements made of elastic material, each of which has the shape of a ring, and is characterized in that the elastic elements are rigidly fastened to each other on a common central axis of symmetry, perpendicular to their planes, and have different one from the other elastic modulus. 2. Expander under item 1, characterized in that on its outer surface there are elements in the form of protrusions and recesses.

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