CN219021909U

CN219021909U - Protective mask

Info

Publication number: CN219021909U
Application number: CN202222593513.0U
Authority: CN
Inventors: 李婉婧
Original assignee: Tianjin Yiheng Electromechanical Engineering Co ltd
Current assignee: Tianjin Yiheng Electromechanical Engineering Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-05-16
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a protective mask, which relates to the technical field of electric welding protective equipment and aims to solve the problems that in the prior art, a movable mirror frame is inconvenient to use, the protective effect is poor, the size of a head band cannot be adjusted and the wearing stability is poor.

Description

Protective mask

Technical Field

The utility model relates to the technical field of electric welding protective equipment, in particular to a protective mask.

Background

In the long-term electric welding process, a welder's extremely lovers can contact a large amount of smoke dust, strong light radiation, high-frequency electromagnetic fields, radioactive substances, noise and the like, and the protective mask is a protective article capable of preventing splash, arc light and other radiation from damaging the welding face and neck during welding.

Chinese patent CN202122364012.0 discloses an electric welding mask capable of opening an eyepiece, wherein both sides above the front end of the mask are provided with eyepiece supports, a movable mirror frame is arranged between the two eyepiece supports, the movable mirror frame is connected with the eyepiece supports through screws, a connecting block is arranged at the rear of the mask, a head hoop is arranged at the rear of the connecting block, and an eyepiece groove is arranged above the two eyepiece supports.

In the prior art, because during welding operation, need wear gloves, use the movable picture frame can be very inconvenient to sometimes need the low head to weld, the movable lens can be opened by gravity influence, loses the protective effect, and the headband size can't be adjusted moreover, can not adapt to different welder's head circumference, makes the stability when wearing poor, consequently needs to improve.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses a protective mask, which adopts the technical scheme that the protective mask comprises a mask, wherein a notch is formed in the mask, a movable mask in sliding connection is arranged on the front surface of the mask, a lens is arranged on the movable mask, the lens corresponds to the size matching position of the notch, the movable mask can drive the lens to move on the mask, so that the efficiency of observing welding spots is improved, an adjustable limiting mechanism is arranged between the movable mask and the mask, the position of the movable mask is conveniently fixed, the protective effect is ensured, a head strap is arranged on the back surface of the mask, and a distance adjusting mechanism is arranged on the head strap and can adjust the total length of the head strap.

As a preferable technical scheme of the utility model, the front surface of the mask is provided with vertical guide bars, a plurality of groups of guide bars are arranged on the front surface of the mask, the movable mask is provided with guide grooves, the guide grooves are connected with the guide bars in a sliding manner, and the guide bars are matched with the guide grooves to limit the moving track of the movable mask.

As a preferable technical scheme of the utility model, the movable cover is provided with the mirror groove, the top surface of the mirror groove is transparent and is flush with the top surface of the movable cover, the top of the mask is provided with the top cover, the top cover is matched with the sizes of the combined outline of the movable cover and the mirror groove, and the top cover can form a closed structure with the movable cover and the mirror groove, so that a good protection effect is achieved.

As a preferable technical scheme of the utility model, the limiting mechanism comprises a limiting strip and a limiting block, wherein the mask is provided with the limiting strip, the limiting strip is provided with limiting grooves, the limiting grooves are in multiple groups and are uniformly distributed, the movable cover is provided with a sliding seat, the sliding seat and the movable cover are provided with through grooves, a sliding block is connected in the through grooves in a sliding manner, a reset spring is arranged between the through grooves and the sliding block, so that the tail end of the sliding block is provided with the limiting block, the limiting block corresponds to the size-matched position of the limiting groove, and the limiting block and the limiting groove are separated from limiting by pulling the sliding block to slide on the sliding seat, so that the movable cover is lifted.

As a preferable technical scheme of the utility model, the adjustable distance mechanism comprises an adjusting seat, a gear and a rack are arranged in the adjusting seat, a knob is arranged on the gear, the gear is meshed with the rack, the rack is provided with two groups and is symmetrical with the gear at the center, the head band is provided with two groups, the racks are connected with the tail end of the head band, and the knob rotates to drive the gear to rotate, so that the rack moves in opposite directions or in opposite directions, and the length of the head band is adjusted.

As a preferable technical scheme of the utility model, a sliding column is arranged on the gear, a sleeve is arranged on the knob, the sleeve is in sliding connection with the sliding column, the sleeve and the sliding column are synchronously limited by a rotation angle through a positioning block and a positioning groove, the sleeve and the sliding column synchronously rotate to enable the knob and the gear to synchronously rotate, a rebound spring is arranged between the sleeve and the sliding column, a clamping block is arranged on the sleeve, a clamping groove is arranged in the adjusting seat, the clamping block corresponds to the position of the clamping groove with the size matched with the size, under the action of the rebound spring in a general state, the clamping block is positioned in the clamping groove, the sleeve and the knob are limited in rotation, so that the gear is limited, the length of the head band is fixed, and when the knob is pressed down, the knob is separated from the limit, so that the length of the head band is adjusted.

According to the utility model, as a preferable technical scheme, the tail end of the rack is provided with the stop block, the stop block corresponds to the position of the gear, and the gear can stop limiting the rack when the rack moves to the limit position.

The utility model has the beneficial effects that: according to the utility model, the sliding block is stirred to drive the limiting block to move, so that the limiting block is matched with or separated from the limiting strip, lifting operation of the movable cover is facilitated, the lenses can be conveniently controlled even if the gloves are worn during welding, overturning and other activities of the lenses are prevented, sparks are prevented from splashing out of the lenses during welding, safety during electric welding operation is improved, a protection effect is enhanced, the gear is separated from the limiting and drives the engaged rack by pressing and rotating the knob, the length of the head band is adjusted, the practicability of the protective mask on different head bands is enhanced, and the stability during wearing is improved.

Drawings

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below; like elements or portions are generally identified by like reference numerals throughout the several figures; in the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic rear view of the present utility model;

FIG. 4 is a schematic top view of the movable cover of the present utility model;

FIG. 5 is a schematic view of a right-side cross-sectional structure of the present utility model;

FIG. 6 is a schematic view of the internal structure of the adjusting seat of the present utility model;

fig. 7 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: 1. a face mask; 2. a movable cover; 3. a mirror groove; 4. a slide; 5. a headgear strap; 6. an adjusting seat; 7. a knob; 10. a top cover; 11. a conducting bar; 12. a limit bar; 30. a lens; 40. a slide block; 51. a rack; 52. a stop block; 60. a gear; 70. a sleeve; 401. a limiting block; 601. a spool; 602. a clamping groove; 701. and (5) clamping blocks.

Detailed Description

Example 1

As shown in fig. 1 to 7, the utility model discloses a protective mask, which adopts the technical scheme that the protective mask comprises a mask 1, wherein a notch is arranged on the mask 1, the front surface of the mask 1 is provided with a movable mask 2 in sliding connection, the movable mask 2 is provided with a lens 30, the lens 30 is matched with the notch, the welding process can be observed during welding, the mask 1 is provided with a limit bar 12, the limit bar 12 is provided with uniformly distributed limit grooves, the movable mask 2 is provided with a sliding seat 4, a through groove is arranged between the sliding seat 4 and the movable mask 2, a sliding block 40 is in sliding connection in the through groove, a reset spring is arranged between the through groove and the sliding block 40, the tail end of the sliding block 40 is provided with a limit block 401, the limit block 401 is matched with the limit groove, the back surface of the mask 1 is provided with a head strap 5, an adjusting seat 6 is arranged on the head strap 5, a gear 60 and a rack 51 are arranged in the adjusting seat 6, the gear 60 is provided with a knob 7, the gear 60 is meshed with the rack 51, the rack 51 is provided with two groups and is symmetrical by the center of the gear 60, the head strap 5 is provided with two groups, and the tail ends of the head strap 5 are connected with the head strap 5.

As shown in fig. 1, in order to stabilize the movement of the movable cover 2, as a preferred technical scheme of the present utility model, the front surface of the mask 1 is provided with two sets of vertical guide bars 11, the movable cover 2 is provided with corresponding guide grooves, and the guide grooves are slidably connected with the guide bars 11.

As shown in fig. 5, in order to facilitate the matching of the movable cover 2 and the mask 1, as a preferred technical scheme of the present utility model, a mirror groove 3 is provided on the movable cover 2, the top surface of the mirror groove 3 is transparent and is flush with the top surface of the movable cover 2, a top cover 10 is provided on the top of the mask 1, and the top cover 10 is matched with the size of the combined outline of the movable cover 2 and the mirror groove 3.

As shown in fig. 7, in order to limit the gear 60, so that the length of the head strap 5 is adjusted and then fixed, as a preferred technical scheme of the present utility model, a sliding post 601 is provided on the gear 60, a sleeve 70 is provided on the knob 7, the sleeve 70 is slidingly connected on the sliding post 601, the sleeve 70 and the sliding post 601 perform synchronous limit of rotation angle through a positioning block and a positioning groove, a rebound spring is provided between the sleeve 70 and the sliding post 601, a clamping block 701 is provided on the sleeve 70, a clamping groove 602 is provided in the adjusting seat 6, and the clamping block 701 is matched with the clamping groove 602.

As shown in fig. 6, in order to limit the rack 51 and prevent the rack 4 from being separated from the adjusting seat 6, a stopper 52 is provided at the end of the rack 51 as a preferred embodiment of the present utility model.

The working principle of the utility model is as follows: when in wear, firstly, the length of the head strap 5 is adjusted, the knob 7 is pressed down, the clamping block 701 is separated from the clamping groove 602, then the knob 7 is rotated, the sleeve 70 is driven to rotate, the gear 60 is driven to rotate through the sliding column 601, the rack 51 is driven to move in the adjusting seat 6, the head strap 5 is driven to move, the length of the head strap 5 is suitable, then the knob 7 is loosened, under the action of the rebound spring, the clamping block 701 on the sleeve 70 is embedded into the clamping groove 602, the length of the head strap 5 is limited, the stop block 52 is blocked by the gear 60 when the rack 51 moves to the limit, the rack 51 is limited, separation is prevented, then the head strap 5 is worn on the head of a welder, the face mask 1 is aligned with the face, the movable cover 2 is matched with the mirror groove 3 and the top cover 10, the top of the movable cover 2 is sealed with the mirror groove 3, sparks are prevented from splashing into the mask 1 during welding operation, the lens 30 filters the strong light generated by electric welding to protect eyes of a user, when electric welding is suspended, the user can dial the sliding block 40 by using the left hand, the sliding block 40 moves in the sliding seat 4 to drive the limiting block 401 to move, so that the limiting block 401 is separated from the limiting groove, the movable cover 2 is separated from the limiting of the limiting strip 12, then the sliding block 40 is pushed downwards to drive the movable cover 2 to descend, the movable cover 2 is separated from the lens 30 and the top cover 10 and descends, the movable cover 2 stably descends along the guide strip 11 to expose the notch, then the sliding block 40 is loosened, under the action of a reset spring, the sliding block 40 is embedded into the limiting groove on the limiting strip 12, the user can conveniently observe the quality of the welding part directly, after observation, the sliding block 40 can be dialed again and lifted, and the movable cover 2 and the lens 30 are restored to the original position.

The mechanical connection according to the utility model is a customary practice adopted by the person skilled in the art, and the technical teaching can be obtained by a limited number of tests, which belongs to the common general knowledge.

The components not described in detail herein are prior art.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with the interior of two elements, the specific meaning of the terms in this utility model will be understood by those of ordinary skill in the art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims

1. A protective mask comprising a mask (1), characterized in that: the face guard (1) is provided with a notch, the front face of the face guard (1) is provided with a movable cover (2) in sliding connection, the movable cover (2) is provided with a lens (30), the lens (30) corresponds to the size phase-match position of the notch, an adjustable limiting mechanism is arranged between the movable cover (2) and the face guard (1), the back face of the face guard (1) is provided with a head strap (5), and the head strap (5) is provided with a distance adjusting mechanism.

2. A protective mask according to claim 1, wherein: the face of the face mask (1) is provided with vertical guide bars (11), the guide bars (11) are provided with a plurality of groups, the movable mask (2) is provided with guide grooves, and the guide grooves are connected with the guide bars (11) in a sliding manner.

3. A protective mask according to claim 1, wherein: the movable cover (2) is provided with a mirror groove (3), the top surface of the mirror groove (3) is transparent and is flush with the top surface of the movable cover (2), the top of the mask (1) is provided with a top cover (10), and the top cover (10) is matched with the size of the combined outline of the movable cover (2) and the mirror groove (3).

4. A protective mask according to claim 1, wherein: the utility model discloses a face guard, including face guard, including stop bar (12), stopper (401), be equipped with stop bar (12) on face guard (1), be equipped with spacing groove on stop bar (12), the spacing groove has multiunit and evenly distributed, be equipped with slide (4) on movable cover (2), slide (4) with be equipped with logical groove on movable cover (2), sliding connection has slider (40) just it is equipped with reset spring to lead to the groove with be equipped with between slider (40), the end of slider (40) is equipped with stopper (401), stopper (401) with the size assorted position in spacing groove is corresponding.

5. A protective mask according to claim 1, wherein: the adjustable distance mechanism comprises an adjusting seat (6), a gear (60) and a rack (51) are arranged in the adjusting seat (6), a knob (7) is arranged on the gear (60), the gear (60) is meshed with the rack (51), the rack (51) is provided with two groups and is symmetrical with the gear (60) in center, the head band (5) is provided with two groups, and the rack (51) is connected with the tail end of the head band (5).

6. A protective mask according to claim 5, wherein: be equipped with traveller (601) on gear (60), be equipped with sleeve (70) on knob (7), sleeve (70) are in sliding connection on traveller (601), sleeve (70) with carry out rotation angle's synchronous spacing through locating piece and constant head tank between traveller (601), just sleeve (70) with be equipped with rebound spring between traveller (601), be equipped with fixture block (701) on sleeve (70), be equipped with draw-in groove (602) in adjusting seat (6), fixture block (701) with the size assorted position of draw-in groove (602) is corresponding.

7. A protective mask according to claim 5, wherein: and a stop block (52) is arranged at the tail end of the rack (51), and the stop block (52) corresponds to the position of the gear (60).