Patent Description:
In the medical field, medical workers need to wear airtight protective suits to protect themselves from germs. However, the air inside the protective suit does not ventilate, so a muggy environment is easy to form inside the protective suit during long-time wearing process. After the medical workers sweat, the protective suits are easy to attach to the medical workers, which is not good for the medical workers to maintain good working conditions. In order to solve the above problem, researchers have designed to combine a filter air supply device with a medical protective suit, so as to improve the working comfort of the medical workers.

<CIT> discloses a multifunctional safety protective suit according to the preamble of claim <NUM>.

<CIT> discloses a cooling device for chemical protective clothing and/or circulating respirator.

For the deficiencies in the prior art, the purpose of the present disclosure is to provide a protective suit with an air supply device.

In order to implement the above purpose, the present disclosure adopts the technical solution below:
The invention provides a protective suit with an air supply device, including a tops portion, a bottoms portion and a transparent head cover which are arranged integrally, wherein the tops portion is provided with a breathing tube, which is communicated with an internal environment of the protective suit, and an air inlet of the breathing tube is communicated with the air supply device; and an exhaust filter device is arranged at a top of the transparent head cover.

Preferably, the bottoms portion is provided with a dressing opening, which stretches upwards to the transparent head cover, a zipper is arranged in the dressing opening, and a starting point of the zipper is located at a lower end of the dressing opening while an end point is located at an upper end of the dressing opening.

Preferably, the protective suit is a three-layer structure, wherein the outer layer is an anti-scratch layer, the middle layer is an isolation layer, and the inner layer is a bacteriostatic layer.

Preferably, a waistband is arranged at a joint of the tops portion and the bottoms portion, a suspending portion is arranged on the air supply device, and the air supply device is installed on the waistband through the suspending portion.

According to the invention, the air supply device includes a top cover and a bottom shell, wherein a filter box, a filter lower shell, a blower and a battery for driving the blower to rotate are arranged between the top cover and the bottom shell; the filter box is located between the top cover and the filter lower shell, the blower and the battery are located between the filter lower shell and the bottom shell, a battery slot is arranged inside the bottom shell, and edges of the top cover, the filter lower shell and the bottom shell are buckled; in a buckling state, the battery slot and the filter lower shell form a battery cavity capable of clamping the battery, a battery opening and a battery lid are arranged at a side part of the filter lower shell correspondingly to the battery cavity, one side of the battery lid is hinged with the battery opening, the other side relative to the hinge side is provided with a clamping portion, and a first elastic member is arranged inside an inner wall of the battery cavity relative to the battery lid; a side part adjacent to the battery lid inside the battery cavity is hinged with a hook, and a torsional spring is arranged on a hinge shaft of the hook; and in the buckling state, the battery is clamped between the hook and the first elastic member, and the clamping portion of the battery lid is clamped between the battery cavity and the hook.

Preferably, a locking portion is arranged inside the battery lid, the locking portion is in parallel connection with an operation portion arranged outside the battery lid, an installing slot is arranged on the battery lid, a second elastic member is arranged inside the installing slot, a top of the installing slot is provided with a through hole correspondingly to the locking portion, the locking portion is connected to a free end of the second elastic member and can slide along the installing slot, and in a locking state, a top end of the locking portion stretches out of the installing slot and resists to a side wall of the battery cavity.

Preferably, one end of the clamping portion is provided with a clamping connection base, which is installed on an inner wall of the battery lid and provided with the installing slot, the battery lid is provided with an operation hole correspondingly to the operation portion, and the operation portion passes through the operation hole and one end of the operation portion stretches into the installing slot and is connected to the locking portion.

Preferably, the hook is a Z-shaped structure, which includes a fastening portion located at one end, a hinge portion located at the other end, and a connecting portion connected to the fastening portion and the hinge portion.

Preferably, an obtuse angle is formed between the hinge portion and the connecting portion, and the fastening portion is vertical to the connecting portion; and a connecting position of the fastening portion and the connecting portion is set as an inclined surface, an outer end face of the fastening portion is a plane, the plane intersects with the inclined surface to form an obtuse angle tip, and the clamping portion is provided with an obtuse angle slot correspondingly to the obtuse angle tip.

Preferably, the second elastic member includes first springs arranged at two sides of a bottom of the locking portion installing slot, the two sides of the bottom end of the locking portion are provided with connecting ear plates in respective, and the connecting ear plates are connected to free ends of the first springs.

Preferably, two sides of the second elastic member are provided with chutes, and one end of each chute is provided with an opening capable of containing the locking portion to slide only, and the other end of each chute is provided with a limiting member correspondingly to each first spring.

Preferably, the filter box includes an filter upper shell, which is an inverted groove shape, a filter membrane is arranged in the groove shape, a lower end opening of the groove shape is provided with a sealing cover, the filter upper shell is buckled with the filter lower shell, and a filter membrane rubber mat is arranged in a buckling gap.

Preferably, the filter upper shell is hung with one end of the filter lower shell, the other end of the filter upper shell is provided with a bolt, the filter lower shell is provided with a locking portion correspondingly to the bolt, the locking portion includes a key fixing frame arranged at a lower side of the filter lower shell, the key fixing frame is connected to a locking key through a third elastic member, the locking key and the filter lower shell are provided with bolt holes correspondingly to the bolt, the bolt bends and stretches inside the filter upper shell to form a hanging portion, and an inner end face of the locking key bends and stretches to the bolt holes and forms a limiting portion, and the limiting portion corresponds to the bolt.

Preferably, the hanging portion is vertical to the bolt to form a straight hook, and the limiting portion is obliquely arranged.

Preferably, the third elastic member includes a second spring, two sides of the locking key stretch out of a mounting portion, the mounting portion is provided with a guide column correspondingly to the second spring, and the guide column stretches into the second spring to be coaxial with the second spring.

Preferably, an upper side of the filter lower shell is a U-shaped groove structure and fits with the filter upper shell, a lower side of the filter lower shell is an inverted U-shaped structure and fits with the bottom shell, and the upper side of the filter lower shell is vertical to a U-shaped section of the lower side; and a side wall of the inverted U-shaped structure is provided with mounting holes, which correspond to outer end faces of the battery lid and the locking key, and the battery lid and the locking key are located at two side walls of the inverted U-shaped structure in respective.

Preferably, two sides of the bolt hole of the U-shaped groove are provided with a plurality of locating columns, and a cap peak is provided with locating holes correspondingly to the locating columns.

Compared with the prior art, the present disclosure has substantive features and progress. Specifically, the present disclosure provides the protective suit with the air supply device, the muggy feeling inside the protective suit may be reduced through the air supply device. The head adopts the fully transparent materials, with a clear view, so the oppression of the wearing personnel is reduced. The long zipper is arranged at the side of the protective suit, which is convenient for wearing and ensures single-person sterile operation. Further, the battery is arranged inside the air supply device, the battery lid is arranged at the side of the air supply device, and during use, the itself shell of the air supply device is combined with the hook stirrup for bearing, instead of adopting a single battery lid for bearing, so the bearing capacity is stronger. The large capacity battery with the greater weight may be adopted according to needs, so as to meet the endurance needs of the air supply device. Further, hanging columns of the filter upper shell and the filter lower shell in the air supply device are hung with the claw hooks, to rotate clockwise. The bolt of the filter upper shell contacts with the bolt hole of the filter lower shell, to extrude the limiting portion of the locking key to move, the third elastic member is compressed, the hanging portion is hung with the limiting portion together so as to complete the locking of the filter upper shell and the filter lower shell, and at this time, the locating columns are clamped in the locating holes correspondingly. When disassembly is required, the locking key is pressed inwards, the hanging portion is separated from the limiting portion, namely, the filter upper shell may be disassembled, so that the disassembly and replacement are convenient to carry out when the filter performance of the filter box is reduced. In addition, the filter box is sealed in a manner that a sealant is combined with a sealing gasket, so as to avoid air entering the air supply device without passing through the filter membrane, thereby reducing the using risk.

In the drawing: <NUM>. Tops portion, <NUM>. Bottoms portion, <NUM>. Waistband, <NUM>. Air supply device, <NUM>. Suspending portion, <NUM>. Dressing opening, <NUM>. Transparent head cover, <NUM>. Breathing tube, <NUM>. Exhaust filter device, <NUM>. Zipper, <NUM>. Filter upper shell, <NUM>. Filter membrane, <NUM>. Sealing cover, <NUM>. Filter membrane rubber mat, <NUM>. Filter lower shell, <NUM>. Blower, <NUM>. First joint, <NUM>. Sealing washer, <NUM>. Second joint, <NUM>. Air duct, <NUM>. Bottom shell, <NUM>. Battery slot, <NUM>. Battery cavity, <NUM>. Battery opening, <NUM>. Air outlet, <NUM>. Top cover, <NUM>. Filter box, <NUM>. Torsional spring, <NUM>. Hinge shaft, <NUM>. Hook, <NUM>. Fastening portion, <NUM>. Hinge portion, <NUM>. Connecting portion, <NUM>. Obtuse angle tip, <NUM>. Clamping portion, <NUM>. Obtuse angle slot, <NUM>. Clamping connection base, <NUM>. Installing slot, <NUM>. Locking portion, <NUM>. Second elastic member, <NUM>. Operation portion, <NUM>. First spring, <NUM>. Connecting ear plate, <NUM>. Chute, <NUM>. Opening, <NUM>. Limiting member, <NUM>. Battery lid, <NUM>. Mounting hole, <NUM>. Through hole, <NUM>. Operation hole, <NUM>. First elastic member, <NUM>. Battery, <NUM>. Female joint, <NUM>. Male joint, <NUM>. Bolt, <NUM>. Bolt hole, <NUM>. Locking key, <NUM>. Mounting hole, <NUM>. Key fixing frame, <NUM>. Mounting portion, <NUM>. Guide column, <NUM>. Third elastic member, <NUM>. Limiting portion, <NUM>. Hanging portion, <NUM>. Second spring, <NUM>. Claw hook, <NUM>. Locating hole, <NUM>. Locating column, <NUM>. Hanging column, <NUM>. Locking portion, <NUM>.

The technical solution of the present disclosure is further described in details below through the specific implementation modes.

As shown in <FIG>, this embodiment provides a protective suit with an air supply device, including a tops portion <NUM>, a bottoms portion <NUM> and a transparent head cover <NUM> which are arranged integrally, wherein the tops portion <NUM> is provided with a breathing tube <NUM>, which is communicated with an internal environment of the protective suit, and an air inlet of the breathing tube <NUM> is communicated with the air supply device <NUM>; and an exhaust filter device <NUM> is arranged at a top of the transparent head cover <NUM>. The air supply device <NUM> may reduce the muggy feeling inside the protective suit, and the head adopts fully transparent materials, with a clear view, so the oppression of wearing personnel can be reduced.

Further, the bottoms portion <NUM> is provided with a dressing opening <NUM>, which stretches upwards to the transparent head cover <NUM>, a zipper <NUM> is arranged in the dressing opening <NUM>, and a starting point of the zipper <NUM> is located at a lower end of the dressing opening <NUM> while an end point is located at an upper end of the dressing opening <NUM>, which is convenient for wearing and ensures single-person sterile operation.

Further, the protective suit is a three-layer structure, wherein the outer layer is an anti-scratch layer, the middle layer is an isolation layer, and the inner layer is a bacteriostatic layer. The multi-layer structural setting may prolong the service life, and the protective suit may be used repeatedly after being cleaned and disinfected. Specifically, the middle layer may adopt a plastic film with a function of isolating virus and germ, and the inner layer may adopt a spinneret with a bacteriostasis function.

Further, a waistband <NUM> is arranged at a joint of the tops portion <NUM> and the bottoms portion <NUM>, a suspending portion <NUM> is arranged on the air supply device <NUM>, and the air supply device <NUM> is installed on the waistband <NUM> through the suspending portion <NUM>.

Specifically, the air supply device <NUM> includes a top cover <NUM> and a bottom shell <NUM>, wherein a filter box <NUM>, a filter lower shell <NUM>, a blower <NUM> and a battery <NUM> for driving the blower <NUM> to rotate are arranged between the top cover <NUM> and the bottom shell <NUM>; the filter box <NUM> is located between the top cover <NUM> and the filter lower shell <NUM>, the blower <NUM> and the battery <NUM> are located between the filter lower shell <NUM> and the bottom shell <NUM>, a battery slot <NUM> is arranged inside the bottom shell <NUM>, and edges of the top cover <NUM>, the filter lower shell <NUM> and the bottom shell <NUM> are buckled; in a buckling state, the battery slot <NUM> and the filter lower shell <NUM> form a battery cavity <NUM> capable of clamping the battery <NUM>, a battery opening <NUM> is arranged at a side part of the filter lower shell <NUM> correspondingly to the battery cavity <NUM>, a battery lid <NUM> is arranged correspondingly to the battery opening <NUM>, one side of the battery lid <NUM> is hinged with the battery opening <NUM>, the other side relative to the hinge side is provided with a clamping portion <NUM>, and a first elastic member <NUM> is arranged inside an inner wall of the battery cavity <NUM> relative to the battery lid <NUM>; a side part adjacent to the battery lid <NUM> inside the battery cavity <NUM> is hinged with a hook <NUM>, and a torsional spring <NUM> is arranged on a hinge shaft <NUM> of the hook <NUM>; and in the buckling state, the battery <NUM> is clamped between the hook <NUM> and the first elastic member <NUM>, and the clamping portion <NUM> of the battery lid <NUM> is clamped between the battery cavity <NUM> and the hook <NUM>. Preferably, the first elastic member <NUM> may adopt a conical spring.

Further, a locking portion <NUM> is arranged inside the battery lid <NUM>, the locking portion <NUM> is in parallel connection with an operation portion <NUM> arranged outside the battery lid <NUM>, a locking portion installing slot <NUM> is arranged on the battery lid <NUM>, a second elastic member <NUM> is arranged inside the installing slot <NUM>, a top of the installing slot <NUM> is provided with a through hole <NUM> correspondingly to the locking portion <NUM>, the locking portion <NUM> is connected to a free end of the second elastic member <NUM> and can slide along the installing slot <NUM>, and in a locking state, a top end of the locking portion <NUM> stretches out of the installing slot <NUM> and resists to a side wall of the battery cavity <NUM>.

Further, one end of the clamping portion <NUM> is provided with a clamping connection base <NUM>, which is installed on an inner wall of the battery lid <NUM> and provided with the installing slot <NUM>, the battery lid <NUM> is provided with an operation hole <NUM> correspondingly to the operation portion <NUM>, and the operation portion <NUM> passes through the operation hole <NUM> and one end of the operation portion <NUM> stretches into the installing slot <NUM> and is connected to the locking portion <NUM>.

Further, the hook <NUM> is a Z-shaped structure, which includes a fastening portion <NUM> located at one end, a hinge portion <NUM> located at the other end, and a connecting portion <NUM> connected to the fastening portion <NUM> and the hinge portion <NUM>, an obtuse angle is formed between the hinge portion <NUM> and the connecting portion <NUM>, and the fastening portion <NUM> is vertical to the connecting portion <NUM>.

Further, a connecting position of the fastening portion <NUM> and the connecting portion <NUM> is set as an inclined surface, an outer end face of the fastening portion <NUM> is a plane, the plane intersects with the inclined surface to form an obtuse angle tip <NUM>, and the clamping portion <NUM> is provided with an obtuse angle slot <NUM> correspondingly to the obtuse angle tip <NUM>.

Further, the second elastic member <NUM> includes first springs <NUM> arranged at two sides of a bottom of the locking portion installing slot <NUM>, the two sides of the bottom end of the locking portion <NUM> are provided with connecting ear plates <NUM> in respective, and the connecting ear plates <NUM> are connected to free ends of the first springs <NUM>. Two sides of the second elastic member <NUM> are provided with chutes <NUM>, and one end of each chute <NUM> is provided with an opening <NUM> capable of containing the locking portion <NUM> to slide only, and the other end of each chute <NUM> is provided with a limiting member <NUM> correspondingly to each first spring <NUM>.

The battery <NUM> is arranged inside the air supply device <NUM> and the battery lid <NUM> is arranged at the side of the air supply device <NUM>, so the itself shell of the air supply device <NUM> is combined with the hook <NUM> stirrup for bearing, instead of adopting a single battery lid <NUM> for bearing during use, so the bearing capacity is stronger. The large capacity battery with the greater weight may be adopted according to needs, so as to meet the endurance needs of the air supply device <NUM>.

Specifically, when the battery <NUM> is installed, the operation portion <NUM> is required to move firstly, the second elastic member <NUM> is compressed, the locking portion <NUM> is separated from the position fitting with the battery cavity <NUM>, the operation portion1045 is buckled to rotate anticlockwise, and the battery lid <NUM> is completely opened to take out the battery <NUM>, so that a big round corner position of the battery <NUM> is aligned with the corresponding round corner inside the battery cavity <NUM> and slides into the battery cavity <NUM>. One end of the used battery <NUM> resists to the first elastic member <NUM>, so that the hook <NUM> is buckled at the other end of the battery <NUM> after rotating a certain angle around the hinge shaft <NUM>. Due to the elastic action of the torsional spring <NUM>, the hook <NUM> will buckle the edge of the battery <NUM> to prevent the battery <NUM> from moving, and then the battery lid <NUM> is buckled, the clamping portion <NUM> of the battery lid <NUM> is clamped between the hook <NUM> and the battery cavity <NUM>, so as to prevent the poor contact between a female joint <NUM> and a male joint <NUM> caused by the battery <NUM> disengagement due to loosened torsional spring <NUM>, without affecting the normal use of the device.

Further, the filter box <NUM> includes a filter upper shell <NUM>, which is an inverted groove shape, a filter membrane <NUM> is arranged in the inverted groove shape, a lower end opening of the groove shape is provided with a sealing cover <NUM>, the filter upper shell <NUM> is buckled with the filter lower shell <NUM>, and a filter membrane rubber mat <NUM> is arranged in a buckle gap. The filter upper shell <NUM> is hung with one end of the filter lower shell <NUM>, the other end of the filter upper shell <NUM> is provided with a bolt <NUM>, the filter lower shell <NUM> is provided with a locking portion <NUM> correspondingly to the bolt <NUM>, the locking portion <NUM> includes a key fixing frame <NUM> arranged at a lower side of the filter lower shell <NUM>, the key fixing frame <NUM> is connected to a locking key <NUM> through a third elastic member <NUM>, the locking key <NUM> and the filter lower shell <NUM> are provided with bolt holes <NUM> correspondingly to the bolt <NUM>, the bolt <NUM> bends and stretches inside the filter upper shell <NUM> to form a hanging portion <NUM>, and an inner end face of the locking key <NUM> bends and stretches to the bolt holes <NUM> and forms a limiting portion <NUM>, and the limiting portion <NUM> corresponds to the bolt <NUM>.

Preferably, the hanging portion <NUM> is vertical to the bolt <NUM> to form a straight hook, and the limiting portion <NUM> is obliquely arranged.

Further, the third elastic member <NUM> includes a second spring <NUM>, two sides of the locking key <NUM> stretch out of a mounting portion <NUM>, the mounting portion <NUM> is provided with a guide column <NUM> correspondingly to the second spring <NUM>, and the guide column <NUM> stretches into the second spring <NUM> to be coaxial with the second spring <NUM>.

Further, a cap peak <NUM> which is vertical to a groove-shaped side wall is arranged at an opened edge of the filter upper shell <NUM>, the bolt <NUM> is located at a lower side of the cap peak <NUM> and vertical to the cap peak <NUM>, the groove-shaped side wall is provided with hanging columns <NUM>, and one end of an upper side of the filter lower shell <NUM> is provided with claw hooks <NUM> correspondingly to the hanging columns <NUM>.

Further, an upper side of the filter lower shell <NUM> is a U-shaped groove structure and fits with the filter upper shell <NUM>, a lower side of the filter lower shell <NUM> is an inverted U-shaped structure and fits with the bottom shell <NUM>, and the upper side of the filter lower shell <NUM> is vertical to a U-shaped section of the lower side; and a side wall of the inverted U-shaped structure is provided with mounting holes <NUM>, which correspond to outer end faces of the battery lid <NUM> and the locking key <NUM>, and the battery lid <NUM> and the locking key <NUM> are located at two side walls of the inverted U-shaped structure in respective. Two sides of the bolt hole <NUM> of the U-shaped groove are provided with a plurality of locating columns <NUM>, and the cap peak <NUM> is provided with locating holes <NUM> correspondingly to the locating columns <NUM>.

During a specific assembly process, the hanging columns <NUM> of the filter upper shell <NUM> and the filter lower shell <NUM> are hung with the claw hooks <NUM>, and rotate clockwise, the bolt <NUM> of the filter upper shell <NUM> contacts with the bolt hole <NUM> of the filter lower shell <NUM>, the limiting portion <NUM> of the locking key <NUM> is extruded to move, the third elastic member <NUM> is compressed, the hanging portion <NUM> is hung with the limiting portion <NUM> so as to complete the locking of the filter upper shell <NUM> and the filter lower shell <NUM>, and at this time, the locating columns <NUM> are clamped into the locating holes <NUM> correspondingly. When disassembly is required, the locking key <NUM> is pressed inwards, the hanging portion <NUM> is separated from the limiting portion <NUM>, namely, the filter upper shell <NUM> may be disassembled, so that the disassembly and replacement are convenient to carry out when the filter performance of the filter box <NUM> is reduced.

Preferably, the filter membrane <NUM> is adhered to the filter upper shell <NUM> through a sealant, an air duct <NUM> is arranged between the filter lower shell <NUM> and the bottom shell <NUM>, the air duct <NUM> and the blower <NUM> are buckled with the filter lower shell <NUM> through screws, and the sealant is applied at a connecting gap. A first joint <NUM> is arranged in an air outlet <NUM>, the first joint <NUM> is clamped between the air duct <NUM> and the filter lower shell <NUM> to connect an exhaust outlet of blower <NUM>, and the sealant is applied at the connecting gap. Further, one end of the first joint <NUM> is connected to an external second joint <NUM> through a sealing washer <NUM>.

During assembly, the filter membrane <NUM> is firstly arranged inside the filter upper shell <NUM>, the sealant is applied to a part where the filter upper shell <NUM> fits with the filter membrane <NUM>, and then the sealing cover <NUM> is buckled to a lower surface of the filter upper shell <NUM>, so that the filter membrane <NUM> is sealed inside the filter upper shell <NUM>. Since the matching gap between the filter membrane <NUM> and the filter upper shell <NUM> is sealed through the sealant, the air may be ensured to enter the air supply device <NUM> only through the upper surface of the filter upper shell <NUM>, so as to avoid air entering the air supply device <NUM> without passing through the filter membrane <NUM>, and reduce the using risk. The filter membrane rubber mat <NUM> is adhered to the bottom of the filter upper shell <NUM>, thus when the filter upper shell <NUM> assembled with the filter membrane <NUM>, the sealing cover <NUM> and the filter membrane rubber mat <NUM> is buckled with the filter lower shell <NUM>, the membrane filter rubber mat <NUM> is extruded so that the filter upper shell <NUM> is buckled with the filter lower shell <NUM>, and the air-tightness of the filter box <NUM> may be ensured completely.

Claim 1:
A protective suit with an air supply device, comprising a tops portion (<NUM>), a bottoms portion (<NUM>) and a transparent head cover (<NUM>) which are arranged integrally, wherein the tops portion (<NUM>) is provided with a breathing tube (<NUM>), which is communicated with an internal environment of the protective suit, and an air inlet of the breathing tube (<NUM>) is communicated with the air supply device (<NUM>); characterized in that an exhaust filter device (<NUM>) is arranged at a top of the transparent head cover (<NUM>),
wherein the air supply device (<NUM>) comprises a top cover (<NUM>) and a bottom shell (<NUM>); a filter box (<NUM>), a filter lower shell (<NUM>), a blower (<NUM>) and a battery (<NUM>) for driving the blower (<NUM>) to rotate are arranged between the top cover (<NUM>) and the bottom shell (<NUM>); the filter box (<NUM>) is located between the top cover (<NUM>) and the filter lower shell (<NUM>), the blower (<NUM>) and the battery (<NUM>) are located between the filter lower shell (<NUM>) and the bottom shell (<NUM>), a battery slot (<NUM>) is arranged inside the bottom shell (<NUM>), and edges of the top cover (<NUM>), the filter lower shell (<NUM>) and the bottom shell (<NUM>) are buckled; in a buckling state, the battery slot (<NUM>) and the filter lower shell (<NUM>) form a battery cavity (<NUM>) capable of clamping the battery (<NUM>), a battery opening (<NUM>) and a battery lid (<NUM>) are arranged at at a side part of the filter lower shell (<NUM>) correspondingly to the battery cavity (<NUM>), one side of the battery lid (<NUM>) is hinged with the battery opening (<NUM>), the other side relative to the hinge side is provided with a clamping portion (<NUM>), and a first elastic member (<NUM>) is arranged inside an inner wall of the battery cavity (<NUM>) relative to the battery lid (<NUM>); a side part adjacent to the battery lid (<NUM>) inside the battery cavity (<NUM>) is hinged with a hook (<NUM>), and a torsional spring (<NUM>) is arranged on a hinge shaft (<NUM>) of the hook (<NUM>); and in the buckling state, the battery (<NUM>) is clamped between the hook (<NUM>) and the first elastic member (<NUM>), and the clamping portion (<NUM>) of the battery lid (<NUM>) is clamped between the battery cavity (<NUM>) and the hook (<NUM>).