阅读说明：本技术 温控器固定结构及温度调节设备 (Temperature controller fixing structure and temperature adjusting equipment ) 是由 刘彪 李刚 刘展鹏 胡静利 于 2021-08-31 设计创作，主要内容包括：本申请涉及一种温控器固定结构及温度调节设备,温控器固定结构包括第一夹臂；第二夹臂,沿第一方向与所述第一夹臂相对设置,以形成夹持所述温控器的夹持空间；以及弹性连接部,两端分别与所述第一夹臂的一端及所述第二夹臂的一端相连；其中,所述弹性连接部能够在外力作用下沿所述第一方向形变以弹性卡接于所述固定孔,以提供使所述温控器保持夹紧于所述夹持空间的作用力。本申请提供的温控器固定结构及温度调节设备,操作方便,不需要额外的工具将温控器固定于本体上,因此,提高了固定效率。(The application relates to a temperature controller fixing structure and a temperature regulating device, wherein the temperature controller fixing structure comprises a first clamping arm; the second clamping arm is arranged opposite to the first clamping arm along the first direction so as to form a clamping space for clamping the temperature controller; the two ends of the elastic connecting part are respectively connected with one end of the first clamping arm and one end of the second clamping arm; the elastic connecting part can be deformed in the first direction under the action of external force to be elastically clamped in the fixing hole, so that the acting force for keeping the temperature controller clamped in the clamping space is provided. The application provides a temperature controller fixed knot constructs and temperature regulation equipment, convenient operation does not need extra instrument to be fixed in the body with the temperature controller on, consequently, has improved fixed efficiency.)

1. The utility model provides a temperature controller fixed knot constructs (100), be used for with temperature controller (200) are fixed in body (300), fixed orifices (310) have been seted up to body (300), its characterized in that, temperature controller fixed knot constructs (100) and includes:

a first clamp arm (10);

the second clamping arm (20) is arranged opposite to the first clamping arm (10) along the first direction to form a clamping space (40) for clamping the temperature controller (200); and

the two ends of the elastic connecting part (30) are respectively connected with one end of the first clamping arm (10) and one end of the second clamping arm (20);

the elastic connecting part (30) can deform along the first direction under the action of external force to be elastically clamped in the fixing hole (310) so as to provide acting force for keeping the temperature controller (200) clamped in the clamping space (40).

2. The temperature controller fixing structure (100) according to claim 1, wherein the first clamping arm (10) and/or the second clamping arm (20) has a first limiting portion (11), and the first limiting portion (11) can abut against the body (300) along the axial direction of the fixing hole (310) to limit the movement of the first clamping arm (10) and/or the second clamping arm (20).

3. The temperature controller fixing structure (100) according to claim 2, wherein the first position-limiting portion (11) protrudes out of the elastic connection portion (30) along a second direction perpendicular to the first direction.

4. The temperature controller fixing structure (100) according to claim 3, wherein the first position-limiting portions (11) comprise at least two, and two of the first position-limiting portions (11) are respectively located at two sides of the first clamping arm (10) or the second clamping arm (20) along the second direction.

5. The temperature controller fixing structure (100) according to any one of claims 1 to 4, wherein the elastic connecting portion (30) is capable of at least partially extending into one side of the fixing hole (310) when elastically clamping with the fixing hole (310), and the first clamping arm (10) and the second clamping arm (20) are located at the other side of the fixing hole (310).

6. The temperature controller fixing structure (100) according to claim 5, wherein the elastic connection part (30) has a second position-limiting part (31) protruding along the first direction, and the second position-limiting part (31) can abut against the body (300) along the axial direction of the fixing hole (310) to block the elastic connection part (30) from escaping from the fixing hole (310).

7. The temperature controller fixing structure (100) according to claim 6, wherein when the first clamping arm (10) and/or the second clamping arm (20) has a first position-limiting portion (11), the elastic connecting portion (30) further comprises a transition portion (32) connected between the first position-limiting portion (11) and the second position-limiting portion (31), the transition portion (32) can have a radial clearance with the fixing hole (310) when the elastic connecting portion (30) is elastically clamped in the fixing hole (310).

8. The temperature controller fixing structure (100) according to claim 6, wherein the second position-limiting portions (31) comprise at least two, and the at least two second position-limiting portions (31) respectively protrude from two sides of the elastic connection portion (30) along the first direction.

9. The temperature controller fixing structure (100) according to claim 6, wherein the second position limiting portion (31) is formed by bending at least a portion of the elastic connection portion (30) outward in a first direction.

10. The temperature controller fixing structure (100) according to claim 1, wherein a side of the first clamping arm (10) facing the second clamping arm (20) has a first mating surface (12), and an inner contour shape of the first mating surface (12) matches an outer contour shape of the temperature controller (200); and/or

One side of the second clamping arm (20) facing the first clamping arm (10) is provided with a second matching surface (21), and the inner size of the second matching surface (21) is matched with the outer shape of the temperature controller (200).

11. The temperature controller fixing structure (100) according to claim 1, wherein an end of the first clamping arm (10) away from the elastic connecting portion (30) is provided with a first guiding portion (13), the first guiding portion (13) is disposed obliquely along the first direction to a side away from the second clamping arm (20), and the first guiding portion (13) can guide the temperature controller (200) into the clamping space (40); and/or

One end, far away from the elastic connecting portion (30), of the second clamping arm (20) is provided with a second guide portion (22), the second guide portion (22) is obliquely arranged towards one side, far away from the first clamping arm (10), of the first clamping arm along the first direction, and the second guide portion (22) can guide the temperature controller (200) to enter the clamping space (40).

12. A temperature adjustment device, comprising a body (300), a temperature controller (200) and the temperature controller fixing structure (100) according to any one of claims 1 to 11.

13. The temperature conditioning device of claim 12, wherein the temperature conditioning device is an oven.

Technical Field

The application relates to the technical field of temperature detection device installation, in particular to a temperature controller fixing structure and temperature adjusting equipment.

Background

There are many temperature adjusting devices on the market, including ovens or air conditioners, which need to adjust the ambient temperature, and therefore, a temperature controller is needed to adjust and control the temperature.

Taking an oven as an example, the fixing mode of the temperature controller comprises two modes, one mode is that after the temperature controller is wrapped by a stainless steel sheet, the stainless steel sheet is fixed on the box body through screws, and after the stainless steel support is wound around the temperature controller, the two ends of the stainless steel support are tightly fixed on the box body through tools.

However, the two modes have the problems of inconvenient fixation and low fixation efficiency.

Disclosure of Invention

Therefore, it is necessary to provide a temperature controller fixing structure and a temperature adjusting device with convenient fixing and high fixing efficiency aiming at the problems of inconvenient fixing and low fixing efficiency of the existing temperature controller fixing mode.

The application provides a temperature controller fixed knot constructs for with the temperature controller is fixed in the body, the fixed orifices has been seted up to the body, temperature controller fixed knot constructs and includes:

a first clamp arm;

the second clamping arm is arranged opposite to the first clamping arm along the first direction so as to form a clamping space for clamping the temperature controller; and

two ends of the elastic connecting part are respectively connected with one end of the first clamping arm and one end of the second clamping arm;

the elastic connecting part can be deformed in the first direction under the action of external force to be elastically clamped in the fixing hole, so that the acting force for keeping the temperature controller clamped in the clamping space is provided.

In one embodiment, the first clamping arm and/or the second clamping arm has a first limiting portion, and the first limiting portion can abut against the body along the axial direction of the fixing hole to limit the movement of the first clamping arm and/or the second clamping arm.

In one embodiment, the first position-limiting portion protrudes out of the elastic connection portion along a second direction perpendicular to the first direction.

In one embodiment, the first limiting parts include at least two, and two of the first limiting parts are respectively located on two sides of the first clamping arm or the second clamping arm along the second direction.

In one embodiment, the elastic connecting portion can at least partially extend into one side of the fixing hole when elastically clamped with the fixing hole, and the first clamping arm and the second clamping arm are located on the other side of the fixing hole.

In one embodiment, the elastic connecting portion has a second limiting portion protruding along the first direction, and the second limiting portion can abut against the body along the axial direction of the fixing hole to block the elastic connecting portion from being separated from the fixing hole.

In one embodiment, when the first clamping arm and/or the second clamping arm has a first position-limiting portion, the elastic connection portion further includes a transition portion connected between the first position-limiting portion and the second position-limiting portion, and the transition portion can have a radial gap with the fixing hole when the elastic connection portion is elastically clamped in the fixing hole.

In one embodiment, the second position-limiting portions include at least two, and the at least two second position-limiting portions respectively protrude from two sides of the elastic connection portion along the first direction.

In one embodiment, the second limiting portion is formed by bending at least part of the elastic connecting portion outwards along the first direction.

In one embodiment, one side of the first clamping arm facing the second clamping arm is provided with a first matching surface, and the inner contour shape of the first matching surface is matched with the outer contour shape of the temperature controller; and/or

One side of the second clamping arm facing the first clamping arm is provided with a second matching surface, and the inner size of the second matching surface is matched with the outer shape of the temperature controller.

In one embodiment, a first guide portion is arranged at one end of the first clamping arm away from the elastic connecting portion, the first guide portion is arranged to incline towards one side away from the second clamping arm along the first direction, and the first guide portion can guide the temperature controller to enter the clamping space; and/or

One end of the second clamping arm, which is far away from the elastic connecting portion, is provided with a second guide portion, the second guide portion is obliquely arranged along one side, which is far away from the first clamping arm, of the first direction, and the second guide portion can guide the temperature controller to enter the clamping space.

In another aspect of the present invention, a temperature adjustment device is further provided, which includes a body, a temperature controller and the temperature controller fixing structure.

In one embodiment, the temperature regulating device is an oven.

Above-mentioned temperature controller fixed knot constructs and temperature regulation equipment, when needs installation temperature controller on the body, the operator can exert oneself to the direction that first arm lock and second arm lock are close to each other, make elastic connection portion warp, at this moment, can stretch into the fixed orifices with elastic connection portion, the operator is no longer exerting oneself to first arm lock and second arm lock afterwards, at this moment, under the effect of elasticity restoring force, elastic connection portion can joint in the fixed orifices of body, thereby can press from both sides tightly the temperature controller for being located the centre gripping space, make it keep in the centre gripping space, thereby make the temperature controller pass through the temperature controller fixed knot structure and be fixed in on the body steadily.

The application of temperature controller fixed knot constructs and temperature regulation equipment, convenient operation does not need extra instrument to be fixed in the body with the temperature controller on, consequently, has improved fixed efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a temperature controller fixing structure in an embodiment of the present application;

FIG. 2 is a schematic diagram of a portion of a temperature adjustment apparatus according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of the temperature controller fixing structure shown in FIG. 1 without being elastically clamped in the fixing hole;

FIG. 4 is a schematic cross-sectional view of the temperature controller fixing structure shown in FIG. 1 elastically clamped in the fixing hole;

FIG. 5 is an enlarged view of the fixing structure of the temperature controller shown in FIG. 4, which is elastically clamped to a portion A of the fixing hole;

fig. 6 is a schematic cross-sectional view illustrating a thermostat being clamped in the thermostat fixing structure shown in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

Fig. 1 shows a schematic structural diagram of a thermostat fixing structure in an embodiment of the present application, and fig. 2 shows a schematic structural diagram of a part of a thermostat in an embodiment of the present application. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.

Referring to the drawings, an embodiment of the present application provides a temperature controller fixing structure 100, which includes a first clamping arm 10, a second clamping arm 20, and an elastic connecting portion 30. The temperature controller fixing structure 100 of the present application is used for fixing the temperature controller 200 to the body 300, and the body 300 is provided with a fixing hole 310 (shown in fig. 3), and the temperature controller fixing structure 100 can be matched with the fixing hole 310 to fix the temperature controller 200 to the body 300. Specifically, the main body 300 may be a main body of an oven, or may be a main body 300 of another structure suitable for fixing a temperature controller, which is not limited herein.

The second clamping arm 20 is disposed opposite to the first clamping arm 10 along the first direction to form a clamping space 40 for clamping the temperature controller 200, and two ends of the elastic connecting portion 30 are connected to one end of the first clamping arm 10 and one end of the second clamping arm 20, respectively, wherein the elastic connecting portion 30 can be deformed along the first direction under the action of an external force to be elastically clamped in the fixing hole, so as to provide an acting force for keeping the temperature controller 200 clamped in the clamping space 40.

Thus, as shown in fig. 3, when the temperature controller 200 needs to be installed on the body 300, an operator may apply force to the first clamping arm 10 and the second clamping arm 20 in a direction approaching each other to cause the elastic connection portion 30 to deform, at this time, the elastic connection portion 30 may extend into the fixing hole 310, and then the operator does not apply force to the first clamping arm 10 and the second clamping arm 20 any more, as shown in fig. 4, at this time, under the action of the elastic restoring force, as shown in fig. 6, the elastic connection portion 30 may be clamped in the fixing hole 310 of the body 300, so that the temperature controller 200 located in the clamping space 40 may be clamped and maintained in the clamping space 40, and thus the temperature controller 200 may be stably fixed on the body 300 through the temperature controller fixing structure 100.

The temperature controller fixing structure 100 of the present application is convenient to operate, and does not require an additional tool to fix the temperature controller 200 to the body 310, thereby improving the fixing efficiency.

Referring to fig. 1 again, in the embodiment of the present application, the first clamping arm 10, the second clamping arm 20 and the elastic connecting portion 30 are integrally formed. Specifically, the first clip arm 10, the second clip arm 20 and the elastic connecting portion 30 are formed by bending an elastic sheet. In some embodiments, the temperature controller fixing structure 100 is made of stainless steel, i.e., the elastic piece is made of stainless steel.

It should be noted that the elastic sheet has a certain width, which can provide sufficient elastic deformation force for the elastic connection portion 30, and can make the clamping area of the first clamping arm 10, the second clamping arm 20 contacting with the temperature controller 200 larger, thereby improving the clamping stability.

In order to enable an operator to operate the elastic connecting portion 30 into the fixing hole 310 to be elastically clamped therewith, and to operate the elastic connecting portion in place without affecting the clamping capability of the first clamping arm 10 and the second clamping arm 20, in some embodiments, the first clamping arm 10 is provided with a first limiting portion 11, and the first limiting portion 11 can abut against the body 300 along the axial direction of the fixing hole 310 to limit the movement of the first clamping arm 10. In another embodiment, the second clamping arm 20 may also have the first limiting portion 11, and in other embodiments, the first clamping arm 10 and the second clamping arm 20 may have the first limiting portion 11, which is not limited herein.

Further, the first position-limiting portion 11 protrudes out of the elastic connection portion 30 along a second direction perpendicular to the first direction. The elastic connecting portion 30 protrudes along two directions, which is more than other directions, so as to avoid the influence of the change of the relative position relationship between the first clamping arm 10 and the second clamping arm 20, and change the abutting relationship of the body 300, so that the first limiting portion 11 can always keep abutting with the body 300 after the elastic connecting portion 30 extends into the fixing hole 310, thereby reducing the operation difficulty and improving the operation stability.

Furthermore, the first position-limiting portions 11 include at least two first position-limiting portions 11, wherein the two first position-limiting portions 11 are respectively located at two sides of the first clamping arm 10 or the second clamping arm 20 along the second direction. Thus, the abutting limit relationship between the first limit part 11 and the body 300 can be more stable.

Specifically, in the embodiment of the present application, the width of the first clamping arm 10 is greater than that of the elastic connection portion 30, so that the first limiting portion 11 can be formed on one side of the first clamping arm 10 close to the elastic connection portion 30. Similarly, the first position-limiting portion 11 of the second clamping arm 20 can be formed, so that the structures of the first clamping arm 10 and the second clamping arm 20 can be simplified.

As shown in fig. 5, in some embodiments, the elastic connection portion 30 can at least partially extend into one side of the fixing hole 310 when elastically engaging with the fixing hole 310, and the first clamping arm 10 and the second clamping arm 20 are located on the other side of the fixing hole 310. Therefore, the elastic connection portion 30 can be more stably and elastically clamped in the fixing hole 310, thereby ensuring that the temperature controller 200 is reliably fixed.

Further, the elastic connection portion 30 has a second position-limiting portion 31 protruding in the first direction, and the second position-limiting portion 31 can abut against the body 300 along the axial direction of the fixing hole 310 to block the elastic connection portion 30 from escaping from the fixing hole 310. It should be noted that when the elastic connection portion 30 is deformed by a force through the fixing hole 310, the second position-limiting portion 31 can be changed in position in the first direction so that the elastic connection portion 30 can smoothly pass through the fixing hole 310, and after the external force is removed, the first position-limiting portion 31 can be returned by the restoring force of the elastic connection portion 30, thereby blocking the elastic connection portion 30 from being separated from the fixing hole 310. By providing the second position-limiting portion 31, the elastic connection portion 30 can be prevented from being easily separated from the fixing hole 310 by an external force, so that the temperature controller 200 can be fixed to the main body 300 to be displaced or unstable.

Further, the second position-limiting portions 31 include at least two, and the at least two second position-limiting portions 31 respectively protrude from two sides of the elastic connection portion 30 along the first direction. Thus, the abutting limit relationship between the second limit portion 31 and the body 300 can be more stable.

In the embodiment of the present application, the second stopper portion 31 is formed by bending at least a portion of the elastic connection portion 30 outward in the first direction. In this way, the entire structure of the elastic connection portion 30 can be simplified. Specifically, the cross-sectional shape of the second stopper portion 31 in the first direction is an arc.

In some embodiments, the elastic connection portion 30 further includes a transition portion 32 connected between the first position-limiting portion 11 and the second position-limiting portion 31, and the transition portion 32 can have a radial gap with the fixing hole 310 when the elastic connection portion 30 is elastically clamped in the fixing hole 310. Thus, the temperature controller 200 can be fixed to the temperature controller fixing structure 100 after the temperature controller fixing structure 100 is fixed to the fixing hole 310. Specifically, the transition portion 32 is concave in the first direction, and more specifically, the cross-sectional shape of the transition portion 32 is arcuate.

In a specific practical operation, an operator may apply force to the first clamping arm 10 and the second clamping arm 20 in a direction approaching to each other to cause the elastic connection portion 30 to deform, at this time, after the elastic connection portion 30 extends into the fixing hole 310, due to the existence of the first limiting portion 11, the temperature controller fixing structure 100 may not move axially any more, at this time, the operator may not apply force to the first clamping arm 10 and the second clamping arm 20 any more, and under the action of the elastic restoring force, the temperature controller fixing structure 100 moves axially, so that the second limiting portion 31 abuts against the edge of the fixing hole 310, and meanwhile, a radial gap is formed between the transition portion 32 and the fixing hole 310. When the temperature controller 200 enters the clamping space 40, the transition portion 32 can be elastically deformed due to the radial gap between the transition portion 32 and the fixing hole 310, so that the first clamping arm 10 and the second clamping arm 20 move away from each other, and the temperature controller 200 is also clamped in the clamping space 40.

In order to more stably clamp the temperature controller 200 in the clamping space 40, in some embodiments, a side of the first clamping arm 10 facing the second clamping arm 20 has a first mating surface 12, an inner shape of the first mating surface 12 matches an outer shape of the temperature controller 200, a side of the second clamping arm 20 facing the first clamping arm 10 has a second mating surface 21, and an inner shape of the second mating surface 21 matches an outer shape of the temperature controller 200. In other embodiments, the first engagement surface 12 may be provided on only the first clamping arm 10, or the second engagement surface 21 may be provided on only the second clamping arm 20, without limitation. Specifically, in the embodiment of the present application, the temperature controller 200 has a cylindrical shape, and the first mating surface 12 and the second mating surface 12 are both arc-shaped.

In some embodiments, the end of the first clamping arm 10 away from the elastic connection portion 30 is provided with a first guide portion 13, and the first guide portion 13 is inclined toward a side away from the second clamping arm 20 along a first direction, so that the temperature controller 200 can be guided into the clamping space 40. Similarly, a second guide portion 22 is disposed at an end of the second clamping arm 20 away from the elastic connection portion 30, and the second guide portion 22 is inclined toward a side away from the first clamping arm 10 along the first direction. In other embodiments, the first and second clamp arms 10 and 20 have first and second guides 13 and 22, respectively, without limitation.

Based on the same inventive concept, the present application further provides a temperature adjusting apparatus, which includes a body 300, a temperature controller 200 and the temperature controller fixing structure 100.

In particular, the temperature regulating device is an oven. More specifically, the body 300 has an inner container, and the fixing hole 310 is opened on a sidewall of the inner container. The oven further comprises a heating tube 320, wherein the heating tube 320 is also fixed on the side wall of the inner container in a penetrating manner and is positioned at one side of the fixing hole 310.

The temperature controller fixed knot that this application embodiment provided constructs 100 and temperature regulation equipment has following beneficial effect:

when the temperature controller 200 is required to be installed on the body 300, an operator may apply force to the first clamping arm 10 and the second clamping arm 20 toward a direction close to each other, so as to deform the elastic connection portion 30, at this time, the elastic connection portion 30 may extend into the fixing hole 310, and thereafter, the operator does not apply force to the first clamping arm 10 and the second clamping arm 20 any more, at this time, under the action of the elastic restoring force, the elastic connection portion 30 may be clamped in the fixing hole 310 of the body 300, so that the temperature controller 200 located in the clamping space 40 may be clamped, so as to be maintained in the clamping space 40, and thus, the temperature controller 200 is stably fixed on the body 300 through the temperature controller fixing structure 100.

The temperature controller fixing structure 100 and the temperature adjusting device of the present application are convenient to operate, and do not require an additional tool to fix the temperature controller 200 to the body 310, thereby improving the fixing efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.