Patent Description:
The disclosure relates to the field of electronic product protection devices, in particular to a lifting and rotating electronic product support and protection device.

Known electronic product supporting apparatuses generally include a supporting carrier and a mounting member. The mounting member is fixed on the supporting carrier. When an electronic product is used, the electronic product is configured to be mounted in the mounting member, so that a user can, in a comfortable posture, watch a video or perform an on-line conference or the like by lifting the electronic product to a higher position, without the need for the user to hold the electronic product. However, because the electronic product supporting apparatus cannot adjust the height of the mounting member, the height position of the electronic product cannot be adjusted, thereby causing limitations in conditions such as when a user is watching a video. <CIT> discloses a bracket for supporting a portable electronic device. The bracket includes a base, a housing receiving the portable electronic device and an arm connecting the base with the housing. The arm defines a slot which has a plurality of teeth arranged along a lengthwise direction thereof. A connector extends through the slot of the arm into the housing. The connector has two elastic tabs movably engaging with the teeth to thereby position the housing at different heights of the arm. <CIT> discloses accessory units for electronic devices. The accessory units can include a panel that has a flexible substrate with a network of structural elements that are arranged to fold the panel into different forms and shapes similar to origami. For example, the panel can be bent along one or more fold lines that are defined by adjacent structural elements. In some cases, the panels are configured to fold at preferred fold lines, sometimes in non-parallel orientations with respect to each other. In one case, the accessory can be unfolded into a flat configuration and serve as a cover for the electronic device. In some cases, the accessory units can be brought behind and support an electronic device at different angles with respect to a support surface. The accessory units can also include features such as keyboards, touch pads, or other input devices for the electronic devices. <CIT> discloses an electronic device, such as a tablet computer, smartphone, or television, which can be mounted to a surface using a magnetic mounting apparatus. In one example, the apparatus can include a protective case that is adapted to receive an electronic device. The protective case can be configured to protect the electronic device from drop-induced damage. The protective case can include a female mounting portion disposed in the protective case. The female mounting portion of the protective case can be configured to magnetically mount to a male mounting portion associated with a folding cover, surface mount, or dock. Once magnetically mounted to the folding cover, surface mount, or dock, the protective case can rotate about the female mounting portion to allow the electronic device to be transitioned from a landscape mode to a portrait mode and vice versa.

The flowing disclosure serves a better understanding of the present invention. In order to overcome the shortcomings of the prior art, the purpose of the present disclosure is to provide a lifting and rotating electronic product support and protection device. By means of mounting an electronic product mounting assembly on a supporting carrier in a liftable manner, and locking the electronic product mounting assembly on the supporting carrier by means of a lifting and locking device, the height positions of a mounting member and an electronic product mounted thereon can be adjusted.

The purpose of the disclosure is realized by the following technical solutions:
A lifting and rotating electronic product support and protection device, comprising : a supporting carrier, an electronic product mounting assembly, and a lifting and locking device; wherein the electronic product mounting assembly is configured to be mounted on the supporting carrier in a liftable manner, and the lifting and locking device is configured to lock the electronic product mounting assembly on the supporting carrier; the electronic product mounting assembly comprises a mounting member configured for mounting an electronic product.

The supporting carrier is a foldable protective sleeve, and comprises a backplane body and a surface cover body, and the surface cover body is connected to the backplane body in a foldable manner, and the surface cover body is adapted to selectively convert into an unfolded form when the surface cover body covers the mounting member or a support form when the surface cover body supports the backplane body; and the electronic product mounting assembly is mounted on the backplane body in a liftable manner, and the lifting and locking device is configured to lock the electronic product mounting assembly on the backplane body.

A first transverse folding line is defined in the surface cover body, the surface cover body is divided into a first main cover body and a second main cover body along the first transverse folding line; the second main cover body is provided with a second transverse folding line parallel to the first transverse folding line, and the second main cover body is divided into a first transverse folding portion and a second transverse folding portion along the second transverse folding line, and the first transverse folding portion is located between the first main cover body and the second transverse folding portion; an edge of the first main cover body magnetically attracts an edge of the second transverse folding portion so that the first main cover body, the first transverse folding portion and the second transverse folding portion cooperatively enclose a triangle shape, and two inclined folding lines extending from an end corner of the second main cover body to a middle of the second transverse folding line are further arranged on the second main cover body, and the second main cover body is divided into three triangular folding portion by the two inclined folding lines, and the first main cover body is provided with a centering folding line intersecting with a middle portion of the first transverse folding line, and the first main cover body is divided into two pairs of coupling sections by the centering folding line, wherein one pair of coupling sections magnetically attracts the other pair of coupling sections so that three triangular folding portion of the second main cover body cooperatively enclose an enclosure having a triangular cross-section; the device is configure to hold a tablet computer of a mobile phone.

The electronic product mounting assembly further comprises a lifting base mounted on the supporting carrier in a liftable manner; the lifting and locking device is used to lock the lifting base onto the supporting carrier.

One of the supporting carrier and the lifting base is provided with a lifting mating structure, and the other one of the supporting carrier and the lifting base is provided with the lifting and locking device, and the lifting and locking device comprises a transverse movable cavity, a transverse locking member movably arranged in the transverse movable cavity, and a first spring arranged in the transverse movable cavity and abutting against the transverse locking member; the transverse locking member forms a first insert head, the lifting mating structure comprises a plurality of insert slots sequentially arranged along a lifting direction of the lifting base, and the first insert head is insertable into the insert slots.

The supporting carrier is provided with a lifting guide groove extending in the lifting direction of the lifting base, and the lifting base is mounted in the lifting guide groove in a liftable manner; the two groove side walls of the lifting guide groove are both provided with the lifting mating structure, and the lifting base is provided with two lifting and locking device in one-to-one correspondence with the two lifting mating structures, and the first insert head of the transverse locking member of the lifting and locking device is configured to be inserted into an insert slot of the corresponding lifting mating structure.

The lifting mating structure comprises a plurality of first protruding teeth arranged in sequence along the lifting direction of the lifting base, and an insert slot is formed between any two adjacent first protruding teeth, one end of the first spring is pressed against the cavity wall of a transverse movable cavity, and the other end of the first spring is pressed against a transverse locking member.

the electronic product mounting assembly further comprises a rotating member rotatably mounted on the lifting base, and a rotating and locking device configured for locking the rotating member on the lifting base; and the mounting member is fixed to the rotating member.

One of the lifting base and the rotating member is provided with a rotating mating structure, and the other is provided with the rotating and locking device, and the rotating and locking member comprises a mounting cavity, a movable locking member movably mounted in the mounting cavity, and a second spring arranged in the mounting cavity and abutting against the movable locking member; and the movable locking member is formed with a second insert head the rotating mating structure comprises a plurality of locking slots circumferentially arranged around a rotation axis of the rotating member, the second insert head is insertable into the locking slots.

The rotating mating structure is provided on the rotating member, and the rotating and locking device is provided on the lifting base; the rotating mating structure comprises a plurality of second protruding teeth arranged in a circumferential direction around a rotation axis of the rotating member, and a locking slot is formed between any two adjacent second protruding teeth; one end of the second spring abuts against the cavity wall of the mounting cavity, and the other end thereof abuts against the movable locking member; the mounting member is a protective frame.

Compared with the prior art, the present disclosure has the following beneficial effects:
The present disclosure provides a lifting and rotating electronic product support and protection device. By using a combination of a supporting carrier, an electronic product mounting assembly, and a lifting and locking device, at the same time, the electronic product mounting assembly configured to be mounted on the supporting carrier in a liftable manner, and the electronic product mounting assembly is locked on the supporting carrier via the lifting and locking device, thus, the electronic product mounting assembly can be lifted relative to the supporting carrier, and is locked by the lifting and locking device, so that the height position of the mounting component and the electronic product mounted thereon can be adjusted; furthermore, the rotating member can also be rotated relative to the lifting base, so that the angle of the mounting member and the electronic product mounted thereon can be adjusted, thereby being convenient for flexible use and satisfying various video watching and use requirements of a user. In addition, the rotating adjustment operation and the lifting adjustment operation are both simple and quick, which can save time and help users to quickly complete the adjustment; in addition, a folding protection sleeve is used for the supporting carrier, which can also protect an electronic product.

<NUM>: supporting carrier; <NUM>: backplane body; <NUM>: lifting guide groove; <NUM>: bottom plate; <NUM>: supporting frame; <NUM>: electronic product mounting assembly; <NUM>: lifting base; <NUM>: clamping ring part; <NUM>: lifting and locking device; <NUM>: transverse locking member; <NUM>: transverse movable cavity; <NUM>: first spring; <NUM>: rotating member; <NUM>: annular convex plate; <NUM>: clamping jaws; <NUM>: rotating and locking device; <NUM>: mounting cavity; <NUM>: movable locking member; <NUM>, second spring; <NUM>. lifting mating structure; <NUM>. insert slot; <NUM>. first protruding teeth; <NUM>. rotating mating structure; <NUM>. locking slot; <NUM>. second protruding teeth;<NUM>. surface cover body; <NUM>. first transverse folding line; <NUM>. second transverse folding line; <NUM>. inclined folding line; <NUM>. triangular folding portion;<NUM>: center folding line; <NUM>: coupling sections; <NUM>: mounting member.

The present utility model is further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the following embodiments or technical features may form a new embodiment in any combination.

Referring to <FIG>, a lifting and rotating electronic product support and protection device, comprising a supporting carrier <NUM>, an electronic product mounting assembly <NUM> and a lifting and locking device <NUM>; the electronic product mounting assembly <NUM> configured to be mounted on the supporting carrier <NUM> in a liftable manner, and the lifting and locking device <NUM> is configured to lock the electronic product mounting assembly <NUM> on the supporting carrier <NUM>; the electronic product mounting assembly <NUM> has a mounting member <NUM> for the mounting of electronic products.

When in use, electronic products such as a mobile phone or a tablet computer configured to be mounted on the mounting member <NUM> of the electronic product mounting assembly <NUM>, and the supporting carrier <NUM> is placed on a support interface (such as the desktop, worktable, or other support surfaces). If the height position of the electronic product needs to be adjusted, the electronic product mounting assembly <NUM> can be raised and lowered relative to the supporting carrier <NUM> and locked by the lifting and locking device <NUM>, thus the height position of the mounting member <NUM> and the electronic product mounted thereon can be flexibly adjusted according to the height of the support interface, which can improve the experience of watching and using electronic product videos.

The electronic product mounting assembly <NUM> further comprises a lifting base <NUM> mounted on the supporting carrier <NUM> in a liftable manner; the lifting and locking device <NUM> is used to lock the lifting base <NUM> onto the supporting carrier <NUM>.

One of the supporting carrier <NUM> and the lifting base <NUM> is provided with a lifting mating structure <NUM>, and the other is provided with the lifting and locking device <NUM>, that is to say, if the supporting carrier <NUM> is provided with the lifting mating structure <NUM>, the lifting base <NUM> is provided with the lifting and locking device <NUM>; if the supporting carrier <NUM> is provided with the lifting and locking device <NUM>, the lifting base <NUM> is provided with a lifting mating structure <NUM>, and the locking can also be achieved.

The lifting and locking device <NUM> comprises a transverse movable cavity <NUM>, a transverse locking member <NUM> movably arranged in the transverse movable cavity <NUM>, and a first spring <NUM> arranged in the transverse movable cavity <NUM> and abutting against the transverse locking member <NUM>; the transverse locking member <NUM> forms a first insert head, the lifting mating structure <NUM> comprises a plurality of insert slots <NUM> sequentially arranged along the lifting direction of the lifting base <NUM>, and the insert slots <NUM> are used for inserting the first insert head. When in use, by lifting the lifting base <NUM> to different height positions, the first insert head of the transverse locking member <NUM> can be inserted in different insert slots <NUM> to lock the lifting base <NUM> at different height positions. By using the structure of the lifting and locking device <NUM> and the lifting mating structure <NUM>, locking can be achieved, and lifting adjustment is facilitated.

Specifically, the lifting mating structure <NUM> comprises a plurality of first protruding teeth <NUM> arranged in sequence along the lifting direction of the lifting base <NUM>, and an insert slot <NUM> is formed between any two adjacent first protruding teeth <NUM>, thereby facilitating the formation of the insert slot <NUM>.

As a preferred embodiment of the disclosure, the supporting carrier <NUM> is provided with a lifting guide groove <NUM> extending in the lifting direction of the lifting base <NUM>, and the lifting base <NUM> is mounted in the lifting guide groove <NUM> in a liftable manner, and the two groove side walls of the lifting guide groove <NUM> are both provided with the lifting mating structure <NUM>, and the lifting base <NUM> is provided with two lifting and locking device <NUM> in one-to-one correspondence with the two lifting mating structures <NUM>, and the first insert head of the transverse locking member <NUM> of the lifting and locking device <NUM> is configured to be inserted into the insert slot <NUM> of the corresponding lifting mating structure <NUM>. By adopting the described structure, the locking stability of the lifting base <NUM> can also be improved.

Specifically, one end of the first spring <NUM> is pressed against the cavity wall of the transverse movable cavity <NUM>, and the other end of the first spring <NUM> is pressed against the transverse locking member <NUM>. Of course, in addition, a gasket or the like may be provided in the transverse movable cavity <NUM>, and the end of the first spring <NUM> away from the transverse locking member <NUM> is pressed against a component such as the gasket or the like.

The electronic product mounting assembly <NUM> further comprises a rotating member <NUM> rotatably mounted on the lifting base <NUM>, and a rotating and locking device <NUM> configured for locking the rotating member <NUM> on the lifting base <NUM>; and the mounting member <NUM> is fixed to the rotating member <NUM>. When in use, the rotating member <NUM> can also rotate relative to the lifting base <NUM>, and is locked by the rotating and locking device <NUM>, thus, the angle of the electronic product mounted on the mounting member <NUM> can be adjusted. In addition to having a lifting function, the electronic product protection device also has a rotating function, and can adjust the angle and height positions of the electronic product mounted on the mounting member <NUM>, and it is convenient for flexible use, and meets various video watching and use requirements of users.

One of the lifting base <NUM> and the rotating member <NUM> is provided with a rotating mating structure <NUM>, and the other is provided with the rotating and locking device <NUM>, that is to say, if the lifting <NUM> is provided with the rotating mating structure <NUM>, the rotating member <NUM> is provided with the rotating and locking device <NUM>; if the lifting base <NUM> is provided with the rotating and locking device <NUM>, the rotating member <NUM> is provided with the rotating matching structure <NUM>, and the locking can also be achieved.

The rotating and locking device <NUM> comprises a mounting cavity <NUM>, a movable locking member <NUM> movably mounted in the mounting cavity <NUM>, and a second spring <NUM> arranged in the mounting cavity <NUM> and abutting against the movable locking member <NUM>; and the movable locking member <NUM> is formed with a second insert head. The rotating mating structure <NUM> comprises a plurality of locking slots <NUM> circumferentially arranged around a rotation axis of the rotating member <NUM>. The locking slots <NUM> are used for inserting the second insert head. When in use, by rotating the rotating member <NUM> to different angles, the second insert head of the movable locking member <NUM> can be inserted into different locking slots <NUM>, so that the rotating member <NUM> can be locked at different angles. By using the described structure of the rotation locking apparatus <NUM> and the rotating mating structure <NUM>, locking can be achieved, and the rotation adjustment operation is facilitated.

Preferably, the rotating mating structure <NUM> comprises a plurality of second protruding teeth <NUM> arranged along a circumference around the rotation axis of the rotating member <NUM>, and a locking slot <NUM> is formed between any two adjacent second protruding teeth <NUM>, so as to facilitate the formation of the locking slot <NUM>.

As a preferred embodiment of the disclosure, the rotating mating structure <NUM> is arranged on the rotating member <NUM>, and the rotating and locking device <NUM> is arranged on the lifting base <NUM>. Specifically, the rotating member <NUM> is provided with an annular convex plate <NUM> protruding outward, and the rotating matching structure <NUM> is formed on the annular convex plate <NUM>.

The rotating member <NUM> is provided with several clamping jaws <NUM> arranged around the rotating axis thereof in a circumferential direction, the lifting base <NUM> is provided with a clamping ring part <NUM>, and the rotating member <NUM> is rotatably mounted on the clamping ring part <NUM> via the several clamping jaws <NUM>. Thus, by means of the described structure, the rotating member <NUM> is rotatably mounted on the lifting base <NUM>, and the mounting of the rotating member <NUM> is facilitated. Certainly, in addition, the rotating member <NUM> may also be rotatably mounted on the lifting base <NUM> through other structures such as a pivot, but the rotating member <NUM> may be rotatably mounted on the clasp portion <NUM> through the clamping jaws <NUM>, which is the most preferred implementation of the present disclosure and facilitates the mounting of the rotating member <NUM>.

One end of the second spring <NUM> abuts against the cavity wall of the mounting cavity <NUM>, and the other end thereof abuts against the movable locking member <NUM>. Certainly, in addition, a gasket or the like may be provided in the mounting cavity <NUM>, and one end of the second spring <NUM> away from the movable locking member <NUM> abuts against a component such as the gasket or the like.

The mounting member <NUM> is a protective frame. Certainly, in addition to the protective frame, the mounting piece <NUM> may also be a fastening bracket, and so on, as long as the mounting member <NUM> can be used for mounting an electronic product. However, using the protective frame for the mounting member <NUM> is the most preferred implementation of the present disclosure, providing protection for the mounting of the electronic product and reducing costs. In order to further optimize the performance thereof, the mounting member <NUM> may also be formed with an accommodating groove for an electronic pen to be placed thereon, wherein the accommodating cavity may be directly formed on the mounting member <NUM> by means of processing, and the mounting member <NUM> may also be formed by using a main frame body and a drawing cover connected to the main frame body in a drawing manner, and the accommodating groove may be enclosed by the main frame body and the drawing cover.

The electronic product may be a tablet computer, a mobile phone, or the like.

In the present embodiment, the supporting carrier <NUM> is a foldable protective sleeve, and comprises a backplane body <NUM> and a surface cover body <NUM>, wherein the surface cover body <NUM> is connected to the backplane body <NUM> in a foldable manner, and the surface cover body <NUM> is adapted to selectively convert into an unfolded form for covering a mounting member <NUM> or a support form for supporting the backplane body <NUM>; and the electronic product mounting assembly <NUM> is mounted on the backplane body <NUM> in a liftable manner, and the lifting and locking device <NUM> is used to lock the electronic product mounting assembly <NUM> on the backplane body <NUM>. During storage of the electronic product, the surface cover body <NUM> can be converted into an unfolded state, and the surface cover body <NUM> covers the mounting member <NUM>, so as to protect an electronic product, and when the electronic product is used to watch a video or perform an on-line conference, etc., the surface cover body <NUM> can be folded to the back of the backplane body <NUM>, and the surface cover body <NUM> is converted into a supporting form and is used for supporting the backplane body <NUM>, so as to facilitate a user to use an electronic product to watch a video, to perform an on-line conference, etc. Specifically, the electronic product mounting assembly <NUM> is mounted on the backplane body <NUM> in a liftable manner; and the lifting and locking device <NUM> is configured to lock the electronic product mounting assembly <NUM> on the backplane body <NUM>. The backplane body <NUM> comprises a bottom plate <NUM> and a supporting frame <NUM> fixed on the bottom plate <NUM>. The lifting guide groove <NUM> and the lifting mating structure <NUM> are both formed on the supporting frame <NUM>. Of course, in addition, the backplane body <NUM> may also adopt other structures such as a thickened plate body.

Certainly, in addition to the foldable protective sleeve, the supporting carrier <NUM> may also be a supporting frame, a support seat, and so on, as long as the supporting carrier <NUM> can serve a supporting function; however, the supporting carrier <NUM> using the foldable protective sleeve is the most preferred embodiment of the present disclosure, serving a supporting function and a protective function at the same time.

The surface cover body <NUM> may adopt various existing surface cover structures, as long as it is adapted to selectively convert into an unfolded state for covering the mounting member <NUM> or a supporting state for supporting the backplane body <NUM>. For example, a double-folded cover plate having a fastening fit and an adjustable angle between the two may be used, or the face cover body <NUM> may comprise a first stacked plate, a second stacked plate and a third stacked plate which are successively and turnably connected, when the surface cover body <NUM> is in an unfolded state, the first stacked plate, the second stacked plate and the third stacked plate are arranged as a flat plate, to fully cover the mounting member <NUM>; when the surface cover body <NUM> is in a supporting state, the edges of the third stacked plate and the edges of the first stacked plate are magnetically attracted to allow the first stacked plate, the second stacked plate and the third stacked plate to form a triangle. As the most preferred embodiment of the disclosure, a first transverse folding line <NUM> is defined in the surface cover body <NUM>. The surface covering <NUM> is divided into a first main cover body and a second main cover body along the first transverse folding line <NUM>, and the second main cover body is provided with a second transverse folding line <NUM> parallel to the first transverse folding line <NUM>. The second transverse folding line <NUM> divides the second main cover body into a first transverse folding portion and a second transverse folding portion, the first transverse folding portion is located between the first main cover body and the second transverse folding portion; the first main cover body edge is used for magnetically attracting the second transverse folding portion edge so that the first main cover body, the first transverse folding portion and the second transverse folding portion enclose a triangle shape. Two inclined folding lines <NUM> extending from an end corner of the second main cover body to the middle of the first transverse folding line <NUM> are also arranged on the second main cover body, and the second main cover body is divided into three triangular folding portion <NUM> by the two inclined folding lines <NUM>. The first main cover body is provided with a centering folding line <NUM> intersecting with a middle portion of the first transverse folding line <NUM>. The first main cover body is divided into two pairs of coupling sections <NUM> by the centering folding line <NUM>, wherein one pair of coupling sections <NUM> is used for magnetically attracting the other pair of coupling sections <NUM> so that three triangular folding portion <NUM> of the second main cover body enclose an enclosure with a triangular cross-section. When in use, the first main cover body and the second main cover body are arranged as plate bodies having a linear extending direction, and in this case, the surface cover body <NUM> is in an unfolded state, and can cover the mounting member <NUM> completely; by magnetically attracting the edges of the first main cover body and the edges of the second transverse folding portion, the first main cover body, the first transverse folding portion and the second transverse folding portion enclose a triangle shape, and in this case, the surface cover body <NUM> is in a supporting form and can be used to support the backplane body <NUM>. In addition, the two coupling sections <NUM> can also magnetically absorb each other, so that three triangular folding portion <NUM> of the second main cover body enclose an enclosure, and in this case, the surface cover body <NUM> is also in a supporting form, and can be used to support the backplane body <NUM>. Accordingly, by means of the described structure of the surface cover body <NUM>, two different support modes can be folded, so that different support modes can be selected according to usage requirements, thereby being more convenient to use flexibly.

The actual lifting rotation adjustment process of the present disclosure is as follows: if the lifting adjustment is required, firstly apply sufficient thrust to the mounting member <NUM> to make the lifting base <NUM> lift and fall along the lifting guide groove <NUM>. During the lifting of the lifting base <NUM>, the transverse locking member <NUM> can press the first spring <NUM> to retract towards the interior of the transverse movable cavity <NUM> under the effect of the abutting of the first protruding teeth <NUM>, and then it can cross the first protruding teeth <NUM>. After the electronic product mounting assembly <NUM> is lifted in place, the transverse locking member <NUM> resets under the elastic force of the first spring <NUM> and is inserted into the corresponding insert slot <NUM> by using the first insert head, so as to quickly complete the lifting adjustment. If rotation adjustment is required, a rotation thrust is applied to the mounting member <NUM> to rotate the rotating member <NUM> relative to the lifting base <NUM>. During the rotation of the rotating member <NUM>, the movable locking member <NUM> can press the second spring <NUM> to retract towards the mounting cavity <NUM> under the effect of the abutting of the second protruding teeth <NUM>, and then it can cross the second protruding teeth <NUM>. After the mounting member <NUM> is rotated into place, the movable locking member <NUM> is reset under the action of the elastic force of the second spring <NUM> and is embedded into the corresponding locking slot <NUM> using the second insert head, Thus, the rotation adjustment can be completed quickly.

Claim 1:
A device configure to lifting and rotating electronic product device, the device comprising: a supporting carrier (<NUM>), an electronic product mounting assembly (<NUM>), and a lifting and locking device (<NUM>); wherein the electronic product mounting assembly (<NUM>) is configured to be mounted on the supporting carrier (<NUM>) in a liftable manner, and the lifting and locking device (<NUM>) is configured to lock the electronic product mounting assembly (<NUM>) on the supporting carrier (<NUM>); the electronic product mounting assembly (<NUM>) comprises a mounting member (<NUM>) configured for mounting an electronic product;
wherein the electronic product mounting assembly (<NUM>) further comprises a lifting base (<NUM>) mounted on the supporting carrier (<NUM>) in a liftable manner; the lifting and locking device (<NUM>) is configured to lock the lifting base (<NUM>) onto the supporting carrier (<NUM>);
wherein one of the supporting carrier (<NUM>) and the lifting base (<NUM>) is provided with a lifting mating structure (<NUM>), and the other one of the supporting carrier (<NUM>) and the lifting base (<NUM>) is provided with the lifting and locking device (<NUM>), characterized in that the lifting and locking device (<NUM>) comprises a transverse movable cavity (<NUM>), a transverse locking member (<NUM>) movably arranged in the transverse movable cavity (<NUM>), and a first spring (<NUM>) arranged in the transverse movable cavity (<NUM>) and abutting against the transverse locking member (<NUM>); the transverse locking member (<NUM>) forms a first insert head, the lifting mating structure (<NUM>) comprises a plurality of insert slots (<NUM>) sequentially arranged along a lifting direction of the lifting base (<NUM>), and the first insert head is insertable into the insert slots (<NUM>).