RU58932U1 - FACE MASK - Google Patents

Abstract

The utility model relates to personal respiratory protection. The technical task is to improve performance by eliminating the appearance of namin head due to changes in the shape and length of the frontal webbing. The front part of the gas mask containing a body with trapezoidal glasses for the eyes, an intercom and a drinking device, exhalation and inhalation units with a filter element connected, cheek and temporal straps and a frontal strap for attaching a headband located in the upper part of the case, characterized in that the frontal strap is fixed in the upper part in the nape direction, while the length of the strap is from 10 mm to 70 mm, and the length of the attachment point is from 20 mm to 40 mm. 5 ill.

Description

The utility model relates to personal respiratory protection and can be used in mass-produced gas masks, for example, GP-8M, GP-7VMT, etc., designed to be protected from harmful gases, vapors and aerosols by the Ministry of Internal Affairs.

The front part of MGP-VM Super gas mask is known (see TU 2539-064-00149392), made in the form of a mask (body) with trapezoidal viewing glasses for the eyes. The mask is equipped with an intercom, an inhalation unit with a filter element mount, and an exhalation unit equipped with a protective screen. The intercom is located in the center of the front part and is connected to the housing using the mounting clip. On the sides of the body and in its upper part along the obturation line, there are respectively two buccal and two temporal straps and a frontal strap for attaching the headband using buckles. On the head, the front part is held by a special headgear, which is fastened with buckles to the straps of the front part.

Known front part is intended for use in commercially available gas masks. It has a number of advantages compared to previously known masks, namely, trapezoidal viewing glasses for the eyes improve visibility during operation, is equipped with

intercom, which is designed for verbal communication while maintaining normal speech intelligibility, as well as a device for receiving water in an infected atmosphere. Unlike the front part used in gas masks GP-7 and GP-7V, the MGP-VM Super mask has two nodes for convenient filtering and absorbing boxes (on the right or left) for ease of use of the gas mask.

However, despite a number of advantages of the famous mask, the MGP-VM Super mask has a significant drawback - poor combination of the front part with a protective helmet. In operating conditions, when wearing a gas mask with such a front part together with a protective helmet (helmet), it causes naminas on the user's head along the obturation line, as well as inconvenience when worn during operation, which creates uncomfortable conditions.

The technical task of the utility model is to improve performance by eliminating the appearance of namin head and inconvenience when worn due to changes in the shape and length of the frontal webbing.

The technical problem is achieved in that in the front part of the gas mask containing the body with trapezoidal glasses for the eyes, intercom and drinking device, exhalation and inhalation units with the connection of the filter element, cheek and temporal straps and a frontal strap located in the upper part of the body for attaching the headgear, characterized in that the frontal webbing is fixed in the upper part in the direction of the nape, while the length of the webbing is from 10 mm to 70 mm, and the length of the attachment point is from 20 mm to 40 mm.

According to the proposed utility model, in order to achieve a technical result, the frontal webbing of the front part is elongated, and the frontal webbing of the headgear is shortened.

The utility model is illustrated by drawings, where in Fig. 1 is a front view of the front part, in Fig. 2 is a left view, in Fig. 3 is a frontal strap view, in Fig. 4 is a prototype (front view), in Fig. 5 is a prototype (left view).

The front part comprises a housing 1, on which glasses 2, consisting of trapezoidal viewing glasses, are fixed by means of a spectacle cage. In the center of the front part there is an intercom 3 connected to the housing 1 by means of a mounting clip. In the buccal region on the right or left, there are holes for attaching a removable neck 4 filter-absorbing with the inspiration valve. The free hole in the front part body is closed by a plug 5. There is also an exhalation unit equipped with a protective screen 6. The body 1 is equipped with cheek, temporal and frontal 7 straps for fastening the headrest 8. The front strap 7 is located in the upper part of the body 1 and is connected to it at an angle 17 ° -20 °, while its length is from 10 to 70 mm, and the length of the mounting location is from 20 mm to 40 mm. Accordingly, the length of the frontal headband of the headgear is shortened by a length of 10 to 70 mm.

Figure 4 and figure 5 presents a front view and a left side view of the front of the IHP-VM Super gas mask, adopted as a prototype.

Known front part contains a housing 9 with trapezoidal viewing glasses 10 for the eyes. The housing 9 has an inspiration valve with a unit for attaching the filter element 11 and an exhalation valve equipped with a protective screen 12. In the center of the front part there is an intercom 13 and connected to the housing 9

using the mounting clip. On the obturation line, the front part has straps 14 for fastening the headgear 15 with buckles.

The proposed utility model - the front of the gas mask - is used as follows:

A filter element is pre-connected to the housing 1 of the front part of the mask by means of a threaded connection. Next, set the position of the headband straps in accordance with the recommendations. The frontal and temporal straps by pulling through the slots of the buckles are installed in the buckles so that the recommended number completely passes through the extreme slot, and the ledge on the strap corresponding to this figure fits snugly to the buckle web. Buccal straps are installed in the same way.

The performance of the proposed utility model is confirmed by testing prototypes made with the stated quantitative characteristics. The length range of the frontal webbing and its shape is selected to provide comfortable conditions for the user when operating a gas mask with the proposed front part. To determine the conformity of the proposed design with the specified conditions, tests of prototypes of the front parts in combination with a helmet (helmet) were also carried out by protective officers of the Ministry of Internal Affairs (see the appendix).

Thus, the proposed utility model is comfortable along the obturation line, avoids namin head when using a protective helmet (helmet) and is convenient to operate.

application

PROTOCOL

Tests of prototypes of the front parts of the MP-04 in combination with a helmet (helmet) by the protective staff of the Ministry of Internal Affairs while checking operational properties.

1. General Provisions

1.1 Place of testing: OJSC "ARTI".

1.2 The tests were carried out in accordance with the requirements of GOST R 12.4.189-99 p. 7.19.

2. Information about the prototypes of the front parts of MP-04:

2.1 Manufacturer of ARTI OJSC.

2.2 Date of manufacture: July 4, 2006

2.3 Tests were conducted on prototypes of the front parts of MP-04 - 1 growth, 2 growth, 3 growth.

2.4 full name Kondratiev Ivan Petrovich

2.4.1 Age 30 years.

2.5 Frolov Nikolay Viktorovich

2.5.1 Age 24 years.

2.6 Strigina Tatyana Vasilievna

2.6.1 Age 53 years.

3. Test conditions

3.1 Tests were carried out at an ambient temperature of 20 ° C and a relative humidity of 80%.

3.2 The testers performed the following actions:

- walking for 5 minutes in an inclined position;

- crawling for 5 minutes;

- filling the container with small objects, lifting to a height of up to 1.5 m, followed by rash and collection. Filling the container with small objects was carried out by testers in an inclined position. This operation was carried out 19 times in 10 minutes.

4. Test results.

Table 1 Height FULL NAME. Frontal webbing length, mm Result one Strigina Tatyana Vasilievna 8 We observed namina of soft tissues of the head in the frontal part 10 Namins were absent fifty Namins were absent 70 Namins were absent 75 The front part is losing tightness

2 Frolov Nikolay Viktorovich 8 We observed namina of soft tissues of the head in the frontal part 10 Namins were absent fifty Namins were absent 70 Namins were absent 75 The front part is losing tightness 3 Kondratiev Ivan Petrovich 8 We observed namina of soft tissues of the head in the frontal part 10 Namins were absent fifty Namins were absent 70 Namins were absent 75 The front part is losing tightness table 2 Height FULL NAME. Length fastening point buckle, mm Result one Strigina Tatyana Vasilievna 10 The front part is losing tightness twenty Namins were absent thirty Namins were absent 40 Namins were absent 43 During operation, in combination with a protective helmet, pain was present 2 Frolov Nikolay Viktorovich 10 The front part is losing tightness twenty Namins were absent thirty Namins were absent 40 Namins were absent 43 During operation, in combination with a protective helmet, pain was present 3 Kondratiev Ivan Petrovich 10 The front part is losing tightness twenty Namins were absent thirty Namins were absent 40 Namins were absent fifty During operation, in combination with a protective helmet, pain was present

Conclusion: When testing the operational properties of prototypes of front parts of the MP-04 with an elongated frontal strap in combination with a protective helmet of the Ministry of Internal Affairs, the testers noted the absence of pain during dressing on the head and namin of soft tissues of the head along the obturation line of the front part, after removing the MP- 04 and a protective helmet.

Claims (1)

The front part of the gas mask containing a body with trapezoidal glasses for the eyes, an intercom and a drinking device, exhalation and inhalation units with a filter element connected, cheek and temporal straps and a frontal strap for attaching a headband located in the upper part of the case, characterized in that the frontal strap is fixed in the upper part in the nape direction, while the length of the strap is from 10 to 70 mm, and the length of the attachment point is from 20 to 40 mm.