阅读说明：本技术 一种用于外翻式车门的省力装置 (Labor-saving device for outward-turning type vehicle door ) 是由 张春雨 郭林林 朱永亮 刘全有 于 2019-10-08 设计创作，主要内容包括：本发明实施例公开了一种用于外翻式车门的省力装置,该装置包括：滑道、滑道底部固定座、滑动省力系统、定滑轮和定滑轮固定螺栓,所述定滑轮通过定滑轮固定螺栓转动连接于滑道的上部,该省力装置固定在车门的门框位置,钢丝绳的一端固定连接车门,另一端穿过定滑轮固定在滑动省力系统的下部导引头上,所述滑动省力系统的另一端固定于滑道的上部,所述滑动省力系统的主体部分由两个反向固接的气弹簧构成。本方案克服了单一气弹簧行程短、刚度弱等缺点,具有结构简单、可靠性好、成本低、应用范围广泛等优点。(The embodiment of the invention discloses a labor-saving device for an outward turning type vehicle door, which comprises: the sliding door comprises a sliding way, a sliding way bottom fixing seat, a sliding labor-saving system, a fixed pulley and a fixed pulley fixing bolt, wherein the fixed pulley is rotatably connected to the upper portion of the sliding way through the fixed pulley fixing bolt, the labor-saving device is fixed to the position of a door frame of a door, one end of a steel wire rope is fixedly connected with the door, the other end of the steel wire rope penetrates through the fixed pulley and is fixed to a lower portion guide head of the sliding labor-saving system, the other end of the sliding labor-saving system is fixed to the upper portion of the sliding way, and a main body. The scheme overcomes the defects of short stroke, weak rigidity and the like of a single gas spring, and has the advantages of simple structure, good reliability, low cost, wide application range and the like.)

1. A power saving device for a roll-out vehicle door, comprising: slide, slide bottom fixing base, the laborsaving system of slip, fixed pulley and fixed pulley fixing bolt, the fixed pulley passes through the fixed pulley fixing bolt and rotates to be connected in the upper portion of slide, and this laborsaving device is fixed in the door frame position of door, and wire rope's one end fixed connection door, the other end pass the fixed pulley and fix on the lower part guide head of the laborsaving system of slip, the other end of the laborsaving system of slip is fixed in the upper portion of slide, its characterized in that: the main body part of the sliding labor-saving system is composed of two gas springs which are fixedly connected in opposite directions.

2. A power saving device for an outboard door as defined in claim 1, wherein: the slide include slide main part, top fixed plate and fixed lug of fixed pulley, the upper portion of slide main part is passed through the rigid coupling and is installed on the roof in the top fixed plate on its top, the lower part of slide main part is pegged graft in slide bottom fixing base and is passed through slide bottom fixing base is installed on the vehicle bottom plate, the fixed lug of fixed pulley is fixed in the upper portion of slide main part and is close to the top fixed plate position, the fixed pulley passes through fixed pulley fixing bolt with fixed lug of fixed pulley rotates and connects.

3. A power saving device for an outboard door as defined in claim 2, wherein: the slideway bottom fixing seat comprises a fixing seat bottom plate and a slideway fixing plate, the slideway fixing plate is welded and fixed on the fixing seat bottom plate, and the lower part of the slideway main body is inserted into the slideway fixing plate and is fixedly connected with the slideway fixing plate through a through hole on the slideway fixing plate.

4. A power saving device for an outboard door as defined in claim 2, wherein: the laborsaving system of slip include air spring fixing base, upper portion air spring, lower part seeker and wire rope fixing pin, the stiff end of upper portion air spring insert in the air spring fixing base and with air spring fixing base rigid coupling, the expansion end of upper portion air spring be fixed in the upper portion of slide, the stiff end of lower part air spring with air spring fixing base rigid coupling, the expansion end and the lower part seeker rigid coupling of lower part air spring, the upper portion air spring with the lower part air spring be located the both sides of air spring fixing base respectively just the expansion end of upper portion air spring with the expansion end of lower part air spring stretches out opposite direction.

5. A power saving device for an outboard door as defined in claim 4, wherein: the air spring fixing seat comprises an integrally elongated U-shaped plate main body, an upper air spring fixing plate, a lower air spring fixing plate and a lower air spring limiting plate, wherein the upper air spring fixing plate is welded and fixed at one end of the U-shaped plate main body, the fixed end of the upper air spring is inserted into the U-shaped plate main body and fixedly connected with the U-shaped plate main body through a through hole in the upper air spring fixing plate, the lower air spring fixing plate is welded and fixed at the other end of the U-shaped plate main body and is respectively positioned at two sides of the U-shaped plate main body together with the upper air spring fixing plate, the fixed end of the lower air spring is inserted into the lower air spring fixing plate and fixedly connected with the lower air spring fixing plate through a through hole in the lower air spring fixing plate, and the lower gas spring limiting plate can reliably limit the axial position of the lower gas spring.

6. A power saving device for an outboard door as defined in claim 5, wherein: the lower portion guide head comprises a U-shaped plate and a steel wire rope fixing lifting lug, the side face of the U-shaped plate is triangular, the steel wire rope fixing lifting lug is welded and fixed to one end of the U-shaped plate and located on one side, opposite to the opening direction of the U-shaped plate, a through hole is formed in the bottom of the U-shaped plate, a steel wire rope fixing bolt is rotatably connected with the steel wire rope fixing lifting lug through the through hole in the steel wire rope fixing lifting lug, the other end of the steel wire rope is finally fixed to the lower portion guide head through the steel wire rope fixing bolt, and the movable end of the lower portion air spring is fixedly.

7. A power saving device for an outboard door as defined in claim 6, wherein: the slide main part wholly be slender U template structure, the slide main part be equipped with the through-hole in its U template bottom upper end, and still be equipped with integrated into one piece's kink at U type opening edge, fixed lug welded fastening of fixed pulley on this kink, the laborsaving system of slip be fixed in the through-hole of slide main part through the expansion end of upper portion air spring on, and wholly be located inside the U template structure of slide main part.

8. A power saving device for an outboard door as defined in claim 7, wherein: the laborsaving system of slip still include antifriction bearing, the U template main part of air spring fixing base and the lower part air spring limiting plate outside still are equipped with 2 symmetrical arrangement's bearing fixed column respectively, and the whole journey diagonal line of bearing fixed column on the bearing fixed column in the U template main part and the lower part air spring limiting plate arranges, the U template little terminal surface and the big terminal surface outside of lower part seeker still be equipped with 2 symmetrical arrangement's bearing fixed column respectively, antifriction bearing total 8, install respectively in on 8 bearing fixed columns, and guarantee that there is 4 antifriction bearing and the reliable laminating of U template main part bottom all the time on the mounted position, 4 antifriction bearing and the reliable laminating of kink inner wall in addition.

9. The labor-saving device for the outwardly-turned vehicle door as claimed in claim 3, wherein an included angle α between the bottom plate of the fixed seat and the main body of the slideway is 70 degrees ~ 85 degrees at the mounting position so as to ensure the seamless joint of the bottom plate of the fixed seat and the vehicle bottom plate at the corresponding position.

10. A power saving device for an outboard door as defined in claim 4, wherein: the labor-saving devices are used in pairs and are symmetrically arranged on two sides of the door frame, so that the stress balance of the door in the processes of outward turning and upward closing is better ensured.

Technical Field

The invention relates to the field of automobiles, in particular to a labor-saving device for an outward-turning type automobile door.

Background

With the development of society, various vehicle types exist at present, some vehicle types adopt outward turning type vehicle doors for expanding functions, the opening and closing modes of the existing outward turning type vehicle doors are mainly two, one is an electric mode, the other is a torsion hinge structure, the electric mode is complex in structure and high in cost, the vehicle doors are difficult to open and close after a power supply system has problems, and the appearance is influenced due to the fact that the torsion hinge structure is difficult to install; at present, the design of the vehicle door by adopting a gas spring as a labor-saving device is rare, and even if the design is carried out, a single gas spring is often adopted at a single supporting point, but the problems of insufficient stroke, low rigidity, poor overall stability and the like exist in a single gas spring in certain occasions, so that the design of the labor-saving device for the outwardly-turned vehicle door capable of overcoming the defects is urgently needed.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a labor saving device for an out-turned vehicle door, which can at least partially solve the problems in the prior art.

The embodiment of the invention provides a labor-saving device for an outward-turning type vehicle door, which comprises: the sliding door comprises a sliding way, a sliding way bottom fixing seat, a sliding labor-saving system, a fixed pulley and a fixed pulley fixing bolt, wherein the fixed pulley is rotatably connected to the upper portion of the sliding way through the fixed pulley fixing bolt, the labor-saving device is fixed to the position of a door frame of a door, one end of a steel wire rope is fixedly connected with the door, the other end of the steel wire rope penetrates through the fixed pulley and is fixed to a lower portion guide head of the sliding labor-saving system, the other end of the sliding labor-saving system is fixed to the upper portion of the sliding way, and a main body.

According to a specific implementation manner of the embodiment of the invention, the slideway comprises a slideway main body, a top fixing plate and a fixed pulley fixing lifting lug, wherein the upper part of the slideway main body is installed on the roof through the top fixing plate fixedly connected to the top end of the slideway main body, the lower part of the slideway main body is inserted into a slideway bottom fixing seat and is installed on a vehicle bottom plate through the slideway bottom fixing seat, the fixed pulley fixing lifting lug is fixed at the position, close to the top fixing plate, of the upper part of the slideway main body, and the fixed pulley is rotatably connected with the fixed pulley fixing lifting lug through the fixed pulley fixing bolt.

According to a specific implementation manner of the embodiment of the invention, the slideway bottom fixing seat comprises a fixing seat bottom plate and a slideway fixing plate, the slideway fixing plate is welded and fixed on the fixing seat bottom plate, and the lower part of the slideway main body is inserted into the slideway fixing plate and is fixedly connected with the slideway fixing plate through a through hole on the slideway fixing plate.

According to a specific implementation manner of the embodiment of the invention, the sliding labor-saving system comprises a gas spring fixing seat, an upper gas spring, a lower guide head and a steel wire rope fixing bolt, wherein the fixed end of the upper gas spring is inserted into the gas spring fixing seat and fixedly connected with the gas spring fixing seat, the movable end of the upper gas spring is fixed on the upper part of the slideway, the fixed end of the lower gas spring is fixedly connected with the gas spring fixing seat, the movable end of the lower gas spring is fixedly connected with the lower guide head, the upper gas spring and the lower gas spring are respectively positioned on two sides of the gas spring fixing seat, and the extending directions of the movable end of the upper gas spring and the movable end of the lower gas spring are opposite.

According to a specific implementation manner of the embodiment of the invention, the gas spring fixing seat comprises a U-shaped plate main body, an upper gas spring fixing plate, a lower gas spring fixing plate and a lower gas spring limiting plate, wherein the U-shaped plate main body is slender integrally, the upper gas spring fixing plate is welded and fixed at one end of the U-shaped plate main body, the fixed end of the upper gas spring is inserted into the U-shaped plate main body and fixedly connected with the U-shaped plate main body through a through hole in the upper gas spring fixing plate, the lower gas spring fixing plate is welded and fixed at the other end of the U-shaped plate main body and is respectively positioned at two sides of the U-shaped plate main body together with the upper gas spring fixing plate, the fixed end of the lower gas spring is inserted into the lower gas spring fixing plate and fixedly connected with the lower gas spring fixing plate through a, and the lower gas spring limiting plate can reliably limit the axial position of the lower gas spring.

According to a specific implementation manner of the embodiment of the invention, the lower guide head comprises a U-shaped plate with a triangular side surface and a steel wire rope fixing lifting lug, the steel wire rope fixing lifting lug is welded and fixed at one end of the U-shaped plate and is positioned at one side of the U-shaped plate with an opposite opening direction, a through hole is formed in the bottom of the U-shaped plate, a steel wire rope fixing bolt is rotatably connected with the steel wire rope fixing lifting lug through the through hole in the steel wire rope fixing lifting lug, the other end of the steel wire rope is finally fixed on the lower guide head through the steel wire rope fixing bolt, and the movable end of the lower air spring is fixedly connected with the lower guide head through the through.

According to a specific implementation manner of the embodiment of the invention, the slide main body is integrally of a slender U-shaped plate structure, a through hole is formed in the upper end of the bottom of the U-shaped plate of the slide main body, an integrally formed bent part is further arranged at the edge of the U-shaped opening, the fixed pulley fixing lifting lug is welded and fixed on the bent part, and the sliding labor-saving system is fixed on the through hole of the slide main body through the movable end of the upper gas spring and is integrally positioned in the U-shaped plate structure of the slide main body.

According to a specific implementation mode of the embodiment of the invention, the sliding labor-saving system further comprises rolling bearings, 2 symmetrically-arranged bearing fixing columns are further arranged on the outer sides of the U-shaped plate main body and the lower air spring limiting plate of the air spring fixing seat respectively, the bearing fixing columns on the U-shaped plate main body and the bearing fixing columns on the lower air spring limiting plate are arranged in a diagonal line mode, 2 symmetrically-arranged bearing fixing columns are further arranged on the outer sides of the small end face and the large end face of the U-shaped plate of the lower seeker respectively, the number of the rolling bearings is 8, the rolling bearings are mounted on the 8 bearing fixing columns respectively, and 4 rolling bearings are guaranteed to be reliably attached to the bottom of the U-shaped plate main body all the time in mounting positions, and the other 4.

According to a specific implementation manner of the embodiment of the invention, in the installation position, the included angle alpha between the bottom plate of the fixed seat and the slideway main body is 70 degrees ~ 85 degrees, so that the bottom plate of the fixed seat is enabled to be in seamless joint with the bottom plate of the vehicle at the corresponding position.

According to a specific implementation mode of the embodiment of the invention, the labor-saving devices are used in pairs and are symmetrically arranged on two sides of the door frame, so that the stress balance of the vehicle door in the processes of outward turning and upward closing is better ensured.

The use method of the labor-saving device of the outward turning type vehicle door is briefly described as follows:

when the vehicle arrives at a destination, the locking mechanism is opened, the vehicle door is turned outwards by hand, the lower guide head moves upwards under the action of the gravity of the vehicle door, the two gas springs are stressed and compressed and provide corresponding reaction force for the vehicle door, so that the vehicle door is very gentle and labor-saving in the descending process, and when the vehicle door is closed by hand, the two gas springs are respectively pushed outwards, the lower guide head moves downwards, the door slowly ascends and is also very labor-saving.

The invention has the following advantages:

1. the problems of insufficient stroke, small rigidity and poor overall stability of a single gas spring in some occasions are solved, and the gas spring is simple in structure, convenient to install and operate, low in cost and wide in application range;

2. the sliding labor-saving system is compact in overall structure, is reliably attached to the two-way inner side of the slide way through the rolling bearing, greatly reduces friction force, and improves the reliability of the system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an assembly view of a power saving device for a liftgate according to an embodiment of the present invention (the slide is removed to show the internal structure);

FIG. 2 is a schematic structural view of the power saving device of the out-turned vehicle door according to the embodiment of the present invention (the partial structure of the slide is also removed in an imaginary manner);

FIG. 3 is an exploded view of a power saving device for a roll-out door provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of a slide structure provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural view of a bottom fixing base of a slide according to an embodiment of the present invention;

FIG. 6 is an assembly view of a sliding labor saving system according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a gas spring retaining bracket according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a lower conducting head according to an embodiment of the present invention.

Reference numerals: 1. a slideway, 2, a slideway bottom fixed seat, 3, a sliding labor-saving system, 4, a fixed pulley, 5, a fixed pulley fixed bolt, 6, a steel wire rope, 7, a door frame, 8, a door, 11, a slideway main body, 12, a top fixed plate, 13, a fixed pulley fixed lifting lug, 21, a fixed seat bottom plate, 22, a slideway fixed plate, 31, a gas spring fixed seat, 32, an upper gas spring, 33, a lower gas spring, 34, a lower guide head, 35, a steel wire rope fixed bolt, 36, a bearing 111, a through hole, 112, 113, a bending part, 221, a through hole, 311, a U-shaped plate main body, 312, an upper gas spring fixed plate, 313, a lower gas spring fixed plate, 314, a gas spring lower limiting plate, 315, a through hole, 316, a through hole, 317, 318, 319, 320, a bearing fixed column, 341, a U-shaped plate, 345. 346, 347, 348 bearing fixing post.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, including: slide 1, slide bottom fixing base 2, the laborsaving system of slip 3, fixed pulley 4 and fixed pulley fixing bolt 5, fixed pulley 4 rotates through fixed pulley fixing bolt 5 and connects in the upper portion of slide 1, and this laborsaving device is fixed in door frame 7 position of door 8, and wire rope 6's one end fixed connection door 8, the other end pass fixed pulley 4 and fix on the lower part seeker 34 of the laborsaving system of slip 3, the other end of the laborsaving system of slip 3 is fixed in the upper portion of slide 1, the main part of the laborsaving system of slip 3 comprises two air springs 32, 33 of reverse rigid coupling.

According to a specific implementation manner of the embodiment of the invention, the slideway 1 comprises a slideway main body 11, a top fixing plate 12 and a fixed pulley fixing lug 13, wherein the upper part of the slideway main body 11 is mounted on the roof through the top fixing plate 12 fixedly connected to the top end of the slideway main body, the lower part of the slideway main body 11 is inserted into the slideway bottom fixing seat 2 and is mounted on a vehicle bottom plate through the slideway bottom fixing seat 2, the fixed pulley fixing lug 13 is fixed at a position, close to the top fixing plate 12, of the upper part of the slideway main body 11, and the fixed pulley 4 is rotatably connected with the fixed pulley fixing lug 13 through the fixed pulley fixing bolt 5.

According to a specific implementation manner of the embodiment of the present invention, the slideway bottom fixing base 2 includes a fixing base bottom plate 21 and a slideway fixing plate 22, the slideway fixing plate 22 is fixed to the fixing base bottom plate 21 by welding, and the lower portion of the slideway main body 11 is inserted into the slideway fixing plate 22 and is fixedly connected thereto through a through hole 221 on the slideway fixing plate 22.

According to a specific implementation manner of the embodiment of the present invention, the sliding labor saving system 3 includes a gas spring fixing seat 31, an upper gas spring 32, a lower gas spring 33, a lower guide head 34 and a steel wire rope fixing bolt 35, a fixed end of the upper gas spring 32 is inserted into the gas spring fixing seat 31 and is fixedly connected to the gas spring fixing seat 31, a movable end of the upper gas spring 32 is fixed to an upper portion of the slideway 1, a fixed end of the lower gas spring 33 is fixedly connected to the gas spring fixing seat 31, a movable end of the lower gas spring 33 is fixedly connected to the lower guide head 34, the upper gas spring 32 and the lower gas spring 33 are respectively located at two sides of the gas spring fixing seat 31, and extending directions of the movable end of the upper gas spring 32 and the movable end of the lower gas spring 33 are opposite.

According to a specific implementation manner of the embodiment of the present invention, the gas spring fixing seat 31 includes a U-shaped plate body 311, an upper gas spring fixing plate 312, a lower gas spring fixing plate 313 and a lower gas spring limiting plate 314, the U-shaped plate body 311 is elongated integrally, the upper gas spring fixing plate 312 is welded and fixed at one end of the U-shaped plate body 311, the fixed end of the upper gas spring 32 is inserted into the U-shaped plate body 311 and is fixedly connected thereto through a through hole 316 on the upper gas spring fixing plate 312, the lower gas spring fixing plate 313 is welded and fixed at the other end of the U-shaped plate body 311, and is respectively located at two sides of the U-shaped plate body 311 with the upper gas spring fixing plate 312, the fixed end of the lower gas spring 33 is inserted into the lower gas spring fixing plate 313 and is fixedly connected thereto through a through, and is welded and fixed to the same side of the U-shaped plate body 311 as the lower gas spring fixing plate 313 and is located at the same end as the upper gas spring fixing plate 312, the lower gas spring limiting plate 314 can reliably limit the axial position of the lower gas spring 33.

According to a specific implementation manner of the embodiment of the present invention, the lower guide head 34 includes a U-shaped plate 341 with a triangular side surface and a wire rope fixing lug 342, the wire rope fixing lug 342 is welded and fixed to one end of the U-shaped plate 341 and is located on the side opposite to the opening direction of the U-shaped plate 341, a through hole 344 is provided at the bottom of the U-shaped plate 341, the wire rope fixing bolt 35 is rotatably connected to the through hole 343 on the wire rope fixing lug 342, the other end of the wire rope 6 is finally fixed to the lower guide head 34 through the wire rope fixing bolt 35, and the movable end of the lower gas spring 33 is fixedly connected to the lower guide head 34 through the through hole 344 at the bottom of the U-shaped plate.

According to a specific implementation manner of the embodiment of the present invention, the slide main body 11 is integrally formed as an elongated U-shaped plate structure, the slide main body 11 is provided with a through hole 111 at the upper end of the bottom of the U-shaped plate, and the edge of the U-shaped opening is further provided with bending portions 112 and 113 integrally formed, the fixed pulley fixing lifting lug 13 is welded and fixed to the bending portions 112 and 113, and the sliding labor saving system 3 is fixed to the through hole 111 of the slide main body 11 through the movable end of the upper gas spring 32, and is integrally located inside the U-shaped plate structure of the slide main body 11.

According to a specific implementation manner of the embodiment of the present invention, the sliding labor saving system 3 further includes rolling bearings 36, the outer sides of the U-shaped plate body 311 and the lower gas spring limit plate 314 of the gas spring fixing seat 31 are further respectively provided with 2 symmetrically arranged bearing fixing columns 317, 318 (not shown), 319, 320, the bearing fixing columns 317, 318 on the U-shaped plate body 311 and the bearing fixing columns 319, 320 on the lower gas spring limit plate 314 are arranged in an overall diagonal line, the outer sides of the small end surface and the large end surface of the U-shaped plate 341 of the lower guide head 34 are further respectively provided with 2 symmetrically arranged bearing fixing columns 345, 346, 347, 348, the rolling bearings 36 have 8 in total, are respectively mounted on the 8 bearing fixing columns 317, 318, 319, 320, 345, 346, 347, 348, and it is ensured that 4 rolling bearings 36 are reliably attached to the bottom of the U-shaped plate body 311 at the mounting position all, the other 4 rolling bearings 36 are reliably attached to the inner walls of the bent portions 112 and 113.

According to a specific implementation manner of the embodiment of the invention, in the installation position, an included angle α between the fixing seat bottom plate 21 and the slideway main body 11 is 70 ° ~ 85 °, preferably 75 °, so as to ensure that the fixing seat bottom plate 21 and the vehicle bottom plate at the corresponding position are in seamless fit.

According to a specific implementation manner of the embodiment of the invention, the labor-saving devices are used in pairs and are symmetrically arranged on two sides of the door frame 7, so that the stress balance of the vehicle door 8 in the processes of outward turning and upward closing is better ensured.

The use method of the labor-saving device of the outward turning type vehicle door is briefly described as follows:

when the vehicle arrives at a destination, the locking mechanism is opened, the vehicle door is turned outwards by hand, the lower guide head moves upwards under the action of the gravity of the vehicle door, the two gas springs are stressed and compressed and provide corresponding reaction force for the vehicle door, so that the vehicle door is very gentle and labor-saving in the descending process, and when the vehicle door is closed by hand, the two gas springs are respectively pushed outwards, the lower guide head moves downwards, the door slowly ascends and is also very labor-saving.

The invention has the following advantages:

1. the problems of insufficient stroke, small rigidity and poor overall stability of a single gas spring in some occasions are solved, and the gas spring is simple in structure, convenient to install and operate, low in cost and wide in application range;

2. the sliding labor-saving system is compact in overall structure, is reliably attached to the two-way inner side of the slide way through the rolling bearing, greatly reduces friction force, and improves the reliability of the system.

It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any such relationship.

There may be any such actual relationship or order between the entities or operations. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.