RU2090120C1 - Gauntlet for protecting against vibrations - Google Patents

Abstract

FIELD: medical engineering. SUBSTANCE: device has cavity for hand to be placed, hand palm section with strap bearing patches extinguishing vibrations manufactured from elastic damping material. The patches fixed on the palmer part are in parallel relation one to another and in perpendicular relation to the longitudinal axis of the gauntlet. One of the patches is produced as segment covering the second and third phalanges of fingers, the other one has rectangular shape and covers the first phalanges of fingers. The patches are covered with material extinguishing vibrations. Leather split is used as material for extinguishing vibrations. Natural latex is used as elastic damping material. Thickness of a patch for extinguishing vibrations is 4-6 mm. EFFECT: reliable protection. 3 dwg

Description

 The invention relates to personal protective equipment against vibration.

 Known mitten for protection against vibration, including a cavity for accommodating the hand, the palm part with a napal and mounted on the palm part in the areas of greatest abrasion, vibration damping linings made of elastic damping material / rubber / and reinforcing strips / metal /, rigidly fixed under the vibration damping linings and located in parallel one relative to the other and perpendicular to the axis of the mitten.

 A disadvantage of the known mitt is that when working with a vibration tool, it protects only the part of the palm where the vibration damping pads with reinforcing strips are located, and not the entire plane of the palm, including the thumb, which reduces the effectiveness of its use in protecting hands from low-frequency vibrations and, as a result, leads to an increase in human vibrational illness.

 The aim of the invention is to increase the efficiency of use of the mitten when exposed to low-frequency vibrations.

 This goal is achieved by the fact that, in contrast to the well-known mitten for protection against vibration, including a cavity for placing the arm, the palm part with a napal and the vibration-damping pads made of elastic-damping material fixed on the palm part, at least two are fixed on the palm part of the proposed mitten parallel to one another and perpendicular to the longitudinal axis of the mitten vibration damping pads, one of which is made in the form of a segment that overlaps the second and third phalanges of the fingers, the other in the form of a rectangle that overlaps the first phalanxes of the fingers and is located behind the finger bend line to a width that provides a hand grip of the vibro-instrument, while the vibration-damping pad is also fixed on the file, made in the form of a segment that covers all three phalanxes of the thumb, the vibration-damping lining of the palm of the hand and the napalka are coated , which is used as a leather split, and as the elastic-damping material of the vibration-absorbing linings, natural latex is used, and the thickness of the vibration The blanking pad is 4–6 mm.

 Fixing the vibration-damping pads on the palm of the hand and on the tip, their form of execution and location will protect against vibration when the hand covers the vibration tool the entire plane of the palm, including all fingers.

 The use of linings made of elastic-damping material - natural latex, instead of rubber, increases the vibration-damping properties of the mitten, since natural latex has a higher absorption efficiency of vibration at low frequencies compared to rubber.

 The thickness of the vibration-absorbing linings is chosen 4-6 mm, since in this interval the highest degree of absorption of low-frequency vibrations by natural latex, beyond these limits, as shown by tests, the vibration absorption efficiency decreases both when exposed to low and high vibrations.

 The use of a vibration damping material, a leather split, as a lining coating, enhances the effect of vibration absorption, i.e. increases the efficiency of use of the mitten when exposed to low-frequency vibrations.

 For the convenience of hand grip of the instrument, the pads are made of two elements providing the mobility of the palm of the hand.

In FIG. 1 shows a mitten for protection against vibration with a groove on the filament;
in FIG. 2 mitten for protection against vibration with grooves on the palm of the hand;
in FIG. 3 location of the hand of a person in a mitten.

 The anti-vibration mitten contains a cavity 1 for accommodating a person’s hand, the palm part 2 with a nip 3. On the palm part 2 are located parallel to each other and perpendicular to the longitudinal axis 4, the mufflers are vibration-absorbing plates 5 and 6. The vibration-absorbing plate 5 is made in the form of a segment with the ability to cover the second phalanx of 7 fingers and the third phalanx of 8 fingers. Vibration suppression pad 6 is made in the form of a rectangle that overlaps the first phalanx of the 9 fingers and extends beyond the fold line of 10 fingers onto the palm of the width, providing coverage of the vibration tool. The width of the entire vibration damping pad 6 is selected for the middle arm of at least 60 mm, i.e. sufficient for a hand to reach a vibrating tool. A vibration damping pad 11 is fixed on the filler 3, made in the form of a segment overlapping the phalanxes of the thumb, respectively 12, 13 and 14. The vibration damping plates 5 and 6 are made of elastic-damping material of natural latex and their thickness is from 4 mm to 6 mm. Vibration damping pads 5 and 6 are covered with vibration damping material 15, which is used as a leather split. On the edges of the pads 5 and 6, 11, lines 16 and 17 are made, respectively.

 Work with a mitten to protect against vibration is as follows.

 During operation with a vibration tool, the resulting vibration is perceived and damped by vibration damping plates 5 and 6, which are made of natural latex with a thickness of 4 to 6 mm, capable of damping vibration or reducing their amplitudes to acceptable limits. Additional damping of vibrations occurs due to the coating of the pads 5 and 6, 11 with a leather split vibration-absorbing material 15. Covering with a leather split increases the wear resistance of the mitten.

 Thus, in comparison with the prototype, the entire plane of the human palm, including the fingers, is protected from vibrations of the instrument with which it works in low frequencies.

 The mitten was tested under production conditions, which confirmed the effective protection of human hands from vibration, and also showed ease of use and wear resistance of the mitten.

 Currently, mass production of mitts for vibration protection has been established due to the great need for them.

Claims (1)

 Mitten for vibration protection, including a cavity for placing the arm, palm part with a napal and vibration damping pads made of elastic-damping material fixed on the palm part, characterized in that at least two parallel, one relative to the other and perpendicular to the longitudinal axis are fixed on the palm part of the mitten anti-vibration mittens, one of which is made in the form of a segment overlapping the second and third phalanxes of the fingers, and the other in the form of a rectangle overlapping the first phalanx and fingers and located beyond the bend of the fingers to a width that provides coverage of the vibration tool, while the vibration-damping pad is made on the tip, made in the form of a segment that covers all three phalanxes of the thumb, the vibration-damping linings of the palm of the hand and the fingertip are coated with vibration-damping material, which is used as a leather split, and as the elastic-damping material of the vibration-absorbing lining - natural latex, and the thickness of the vibration-damping lining is 4 6 mm.

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