Lifting protective mask

Abstract

The utility model provides a lifting protective mask which comprises a head sleeve and a transparent mask body, the head sleeve is used for sleeving the head of a human body, the transparent mask body is installed at the front end of the head sleeve and used for blocking the front of the face, and the transparent mask body and the head sleeve are rotationally connected. A motor for driving the transparent face mask to rotate is arranged between the transparent face mask and the transparent face mask; a control mechanism is arranged on the outer side face of the head sleeve and comprises a battery box fixed to the head sleeve and a rotary switch fixed to the battery box. A battery is arranged in the battery box; and the rotary switch is used for connecting the battery and the motor and controlling the motor to rotate forwards or backwards, so that the transparent mask is lifted after rotating upwards or reset after rotating downwards. The mask can be lifted under the condition that the mask does not need to be taken off, so that the operation is convenient, and the operation amount of medical personnel is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically a retractable protective face shield. Background Technology

[0002] Medical protective face shields are mainly used by medical personnel for protection during examinations, treatments, and various epidemic prevention work scenarios. Their primary function is to block the spread of pathogens through splashes of bodily fluids and blood. Various medical protective face shields exist in the prior art. For example, patent document CN114794616A discloses a medical isolation face shield, including a transparent protective face shield, a sponge block, and an elastic band. The top of the transparent protective face shield has an inner cavity with a slot, and the inner cavity of the slot contains the sponge block. Another example is patent document CN111529988A, which discloses an anti-fog medical protective face shield, including a curved transparent face shield and a support pad, a left adhesive strip, and a right adhesive strip disposed on the curved transparent face shield. The left adhesive strip has an adhesive snap fastener, and the right adhesive strip has an adhesive female snap fastener that can be attached to the adhesive snap fastener. The surface of the curved transparent face shield is coated with a hydrophilic anti-fog coating, which is obtained by applying a hydrophilic anti-fog coating and then drying it. The above-mentioned protective face shields may encounter the following problems when in use: In some situations, medical personnel need to frequently alternate between wearing and not wearing the face shield. Since the fastening straps of common face shields are usually located at the back of the head, alternating between wearing and removing the face shield obviously increases the workload and brings various inconveniences. Utility Model Content

[0003] The main objective of this application is to provide a retractable protective face shield that can be raised or lowered without removing the face shield. To this end, this application provides the following technical solution:

[0004] A retractable protective face shield includes a headgear and a transparent face shield. The headgear is worn over the head, and the transparent face shield is mounted on the front end of the headgear to cover the face. The transparent face shield and the headgear are rotatably connected, and a motor is provided between them to drive the transparent face shield to rotate. A control mechanism is provided on the outer side of the headgear, including a battery box fixed to the headgear and a rotary switch fixed to the battery box. The battery box contains a battery for powering the motor. The rotary switch includes a sleeve and a knob. The sleeve is sealed at the lower end and open at the upper end, with an annular groove at the bottom and a circular ring on its inner wall. There are two pairs of disconnected contacts, which are connected in series between the motor and the battery, respectively, forming two circuits with opposite current directions. A limiting plate is provided below the contacts in the annular groove, and the height of the limiting plate is greater than the depth of the annular groove. The lower end of the knob has a downwardly protruding central shaft that passes through the ring. Two baffles are symmetrically provided on the lower side wall, and two conductive plates are symmetrically provided on the upper side wall. The two baffles are located between the annular groove and the ring, and a spring is provided between the baffles and one of the limiting plates. One of the surfaces of the two conductive plates is conductive, and this surface is separated from the contacts under the action of the spring.

[0005] The lifting protective mask provided in this application can achieve at least the following beneficial effects: by setting a motor that can drive the transparent mask to rotate and a control mechanism for controlling the forward and reverse rotation of the motor, the mask can be rotated upward to open the mask and rotated downward to reset it. Without removing the mask, the mask can be avoided from obscuring the face of medical personnel when necessary. Attached Figure Description

[0006] One or more embodiments of this application will now be described by way of example only with reference to the accompanying drawings, in which:

[0007] Figure 1 , Figure 2 and Figure 3 These are perspective views, side views, and usage diagrams of embodiments of this application, respectively.

[0008] Figure 4 , Figure 5 and Figure 6 The figures shown are perspective view, sectional view and exploded view of the rotary switch in the embodiment.

[0009] The following numbers are labeled in the diagram: 100, headgear; 110, head ring; 111, side shaft; 112, fastening screw; 113, vent hole; 120, adjusting belt; 200, transparent face mask; 210, motor; 300, control mechanism; 310, battery box; 320, rotary switch; 321, sleeve; 322, knob; 323, ring; 324, contact point; 325, limiting plate; 326, central shaft; 327, baffle; 328, conductive plate; 329, spring; 330, annular groove. Detailed Implementation

[0010] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0011] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0012] like Figures 1-6As shown, the lifting protective mask of this embodiment includes a headgear 100 and a transparent face mask 200. The headgear 100 is used to cover the head of a person, and the transparent face mask 200 is installed at the front end of the headgear 100 to block the front of the face. The transparent face mask 200 and the headgear 100 are rotatably connected, and a motor 210 for driving the transparent face mask 200 to rotate is provided between them. A control mechanism 300 is provided on the outer side of the headgear 100. The control mechanism 300 includes a battery box 310 fixed to the headgear 100 and a rotary switch 320 fixed to the battery box 310. The battery box 310 contains a battery for powering the motor 210. The rotary switch 320 includes a sleeve 321 and a knob 322. The sleeve 321 is sealed at the lower end and open at the upper end, and has an annular groove 330 at the bottom and a ring 32 on the inner wall in the middle. 3. The ring 323 has two pairs of disconnected contacts 324, which are connected in series between the motor 210 and the battery, respectively, and form two circuits with opposite current directions. A limiting plate 325 is provided in the annular groove 330 below the contacts 324. The height of the limiting plate 325 is greater than the depth of the annular groove 330. The lower end of the knob 322 has a downwardly protruding central shaft 326, which passes through the ring 323. Two baffles 327 are symmetrically provided on the lower side wall, and two conductive plates 328 are symmetrically provided on the upper side wall. The two baffles 327 are located between the annular groove 330 and the ring 323, and a spring 329 is provided between the baffles 327 and one of the limiting plates 325. One of the surfaces of the two conductive plates 328 can conduct electricity, and this surface is separated from the contacts 324 under the action of the spring 329.

[0013] The headgear 100 includes a headband 110 and an adjustment strap 120. A battery box 310 and a motor 210 are fixed to the side of the headband 110. The side of the headband 110 also has a laterally protruding side shaft 111. The rotating shaft of the motor 210 is fixedly connected to one of the upper corners of the transparent face mask 200, and the side shaft 111 is rotatably connected to the other upper corner of the transparent face mask 200. The rear end of the headband 110 has a through slot, and a fastening screw 112 is threaded onto the back of the slot. One end of the adjustment strap 120 is fixedly connected to the front end of the headband 110, and the other end is inserted into the slot. The motor 210 should preferably be a geared motor to avoid excessive rotation speed.

[0014] Both the headband 110 and the adjustment strap 120 are made of plastic and have ventilation holes 113 evenly distributed on both to reduce overall weight and improve wearing comfort. The transparent face mask 200 is made of transparent plastic. The side of the knob 322 has anti-slip textured surfaces to facilitate rotation.

[0015] In this embodiment, when using the lifting protective mask, first place the headband 110 over the head above the ears. Before or during wearing, the adjustment strap 120 can be pulled out and the fastening screw 112 tightened to adjust the wearing height and tightness of the entire headband 100. When it is necessary to raise or lower the transparent mask 200, turn the knob 322 clockwise or counterclockwise. The conductive plate 328 touches the two disconnected contacts 324, thereby connecting the entire power circuit of the motor 210. Since the current direction of the circuit formed by the two pairs of contacts is different, different directions of the knob 322 can control the motor 210 to rotate forward or reverse, ultimately achieving the purpose of opening the transparent mask 200 by rotating it upward or resetting it by rotating it downward. After rotating to the appropriate position, release the knob 322. Under the action of the spring 329, the conductive surface of the conductive plate 328 leaves the contact 324, the circuit is broken, and the transparent mask 200 stops rotating.

[0016] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this application should be within the protection scope of this application.

Claims

1. A retractable protective face shield, comprising a head cover (100) and a transparent face shield (200), the head cover (100) being used to cover the head of a person, and the transparent face shield (200) being installed at the front end of the head cover (100) for covering the front of the face, characterized in that, The transparent face mask (200) and the headgear (100) are rotatably connected, and a motor (210) for driving the transparent face mask (200) to rotate is provided between them; a control mechanism (300) is provided on the outer side of the headgear (100), the control mechanism (300) includes a battery box (310) fixed on the headgear (100) and a rotary switch (320) fixed on the battery box (310); a battery for powering the motor (210) is provided inside the battery box (310); The rotary switch (320) includes a sleeve (321) and a knob (322); the sleeve (321) is sealed at the lower end and open at the upper end, and has an annular groove (330) at the bottom and a ring (323) on the inner wall of the middle section. The ring (323) has two pairs of disconnected contacts (324), which are connected in series between the motor (210) and the battery, respectively, forming two circuits with opposite current directions. A limiting plate (325) is located below the contacts (324) within the annular groove (330), and the height of the limiting plate (325) is greater than the depth of the annular groove (330). The lower end of the knob (322) is provided with a downwardly protruding central shaft (326), which passes through the ring (323). The lower side wall is symmetrically provided with two baffles (327), and the upper side wall is symmetrically provided with two conductive plates (328). The two baffles (327) are located between the annular groove (330) and the ring (323). A spring (329) is provided between the baffle (327) and one of the limiting plates (325). One of the conductive plates (328) is conductive, and the plate is separated from the contact point (324) under the action of the spring (329).

2. The lifting protective mask according to claim 1, characterized in that, The headgear (100) includes a head ring (110) and an adjustment strap (120); the battery box (310) and the motor (210) are fixed to the side of the head ring (110), and the side of the head ring (110) is also provided with a side-protruding side shaft (111). The rotating shaft of the motor (210) is fixedly connected to one of the upper corners of the transparent mask (200), and the side shaft (111) is rotatably connected to the other upper corner of the transparent mask (200); the rear end of the head ring (110) is provided with a slot that runs vertically through it, and a fastening screw (112) is threaded on the back of the slot. One end of the adjustment strap (120) is fixedly connected to the front end of the head ring (110), and the other end is inserted into the slot.

3. The lifting protective mask according to claim 2, characterized in that, Both the headband (110) and the adjustment belt (120) are made of plastic and are provided with ventilation holes (113).

4. The lifting protective mask according to claim 1, characterized in that, The transparent face mask (200) is made of transparent plastic.

5. The lifting protective mask according to claim 1, characterized in that, The knob (322) has anti-slip textured surfaces on its side.

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