阅读说明：本技术 一种方便安装的物联网核心一体机及使用方法 (Internet of things core all-in-one machine convenient to install and use method ) 是由 邓小武 于 2021-07-24 设计创作，主要内容包括：本发明公开了一种方便安装的物联网核心一体机,包括保护壳、垫板和一体机本体,所述垫板固定设置在保护壳下侧内壁,所述一体机本体固定设置在垫板上,所述一体机本体外侧固定设置有框体,所述框体为中空结构,所述框体两侧对称设置有定位块,且保护壳内壁设置有与定位块匹配的配合块,所述框体内设置有与定位块匹配的撑紧装置,所述保护壳侧壁对称设置有透气口,所述透气口内设置有匹配的防尘网,且保护壳侧壁内设置有与防尘网匹配的卡紧定位装置。本发明操作相对简便,无需拧紧多组螺栓螺母,大大的提高了工作人员对一体机的安装效率,能将防尘网从透气口上拆卸下来,及时对防尘网进行清洗和更换,及时对一体机本体进行吹风冷却。(The invention discloses an Internet of things core all-in-one machine convenient to install, which comprises a protective shell, a base plate and an all-in-one machine body, wherein the base plate is fixedly arranged on the inner wall of the lower side of the protective shell, the all-in-one machine body is fixedly arranged on the base plate, a frame body is fixedly arranged on the outer side of the all-in-one machine body, the frame body is of a hollow structure, positioning blocks are symmetrically arranged on two sides of the frame body, matching blocks matched with the positioning blocks are arranged on the inner wall of the protective shell, tightening devices matched with the positioning blocks are arranged in the frame body, ventilation openings are symmetrically arranged on the side wall of the protective shell, matched dust screens are arranged in the ventilation openings, and clamping and positioning devices matched with the dust screens are arranged in the side wall of the protective shell. The invention has relatively simple and convenient operation, does not need to tighten a plurality of groups of bolts and nuts, greatly improves the installation efficiency of workers to the integrated machine, can disassemble the dust screen from the ventilation port, cleans and replaces the dust screen in time, and cools the integrated machine body by blowing in time.)

1. An Internet of things core all-in-one machine convenient to mount comprises a protective shell (1), a base plate (2) and an all-in-one machine body (3), wherein the base plate (2) is fixedly arranged on the inner wall of the lower side of the protective shell (1), the all-in-one machine body (3) is fixedly arranged on the base plate (2), and the all-in-one machine is characterized in that a frame body (25) is fixedly arranged on the outer side of the all-in-one machine body (3), the frame body (25) is of a hollow structure, positioning blocks (5) are symmetrically arranged on two sides of the frame body (25), matching blocks (6) matched with the positioning blocks (5) are arranged on the inner wall of the protective shell (1), tightening devices matched with the positioning blocks (5) are arranged in the frame body (25), ventilation openings (7) are symmetrically arranged on the side wall of the protective shell (1), matched dustproof nets (8) are arranged in the ventilation openings (7), and clamping and positioning devices matched with the dustproof nets (8) are arranged in the side wall of the protective shell (1), the temperature-sensing device is characterized in that a driving motor (9) is fixedly arranged at the upper end of the inner side wall of the protective shell (1), an output shaft of the driving motor (9) is fixedly connected with a reciprocating screw rod (10), one end, far away from the output shaft of the driving motor (9), of the reciprocating screw rod (10) is rotatably connected with the inner wall of the other side of the protective shell (1), a movable nut (11) is in threaded connection with the reciprocating screw rod (10), a limit block (12) is fixedly arranged on the upper side wall of the movable nut (11), a limit groove (13) matched with the limit block (12) is arranged on the upper side wall of the protective shell (1), a small fan (14) is fixedly connected with the lower side wall of the movable nut (11), an automatic temperature-sensing control device matched with the driving motor (9) and the small fan (14) is arranged in the protective shell (1), a cover plate (36) is rotatably connected with the side wall of the protective shell (1), and a lock head is arranged on the cover plate (36), and the side wall of the protective shell (1) is provided with a lock catch matched with the lock head.

2. The Internet of things core all-in-one machine convenient to install according to claim 1, wherein the tightening device comprises a first rotating rod (26) and a plurality of second rotating rods (27), the second rotating rods (27) are symmetrically arranged on two sides of the first rotating rod (26), the first rotating rod (26) and the second rotating rod (27) are rotatably connected with the inner wall of a frame body (25), one end of the first rotating rod (26) outwards penetrates through the side wall of the frame body (25) and is fixedly connected with a rotating handle (4), a matched bearing is arranged at the joint of the side wall of the frame body (25) and the first rotating rod (26), a driving wheel (28) is fixedly sleeved on the first rotating rod (26), a driven wheel (29) is fixedly sleeved on the second rotating rod (27), each driving wheel (28) is in transmission connection with the driven wheel (29) through a transmission belt (30), and a plurality of groups of first rotating rods uniformly distributed fixedly sleeved on one end, far away from the first rotating rod (26), of the second rotating rod (27) is provided with a plurality of groups of first rotating rods uniformly distributed A helical gear (31), be provided with in framework (25) with second helical gear (32) of first helical gear (31) meshing, every second helical gear (32) all are connected through corresponding threaded rod (33) and framework (25) inside wall rotation, threaded connection has thread bush (34) on threaded rod (33), thread bush (34) lateral wall symmetric connection has connecting rod (35), every group connecting rod (35) all outwards run through framework (25) lateral wall and locating piece (5) fixed connection that corresponds.

3. An internet of things core all-in-one machine convenient to mount as claimed in claim 2, wherein the driving wheel (28) and the driven wheel (29) are both provided with anti-slip threads, and the transmission belt (30) is a transmission belt (30) with a V-shaped section.

4. The Internet of things core all-in-one machine convenient to mount as claimed in claim 1, wherein the frame body (25) is U-shaped, and the positioning block (5) and the matching block (6) are connected in an inserting and moving manner.

5. The Internet of things core all-in-one machine convenient to mount as claimed in claim 1, wherein the clamping and positioning device comprises a cavity (19) and a sliding block (20), the sliding block (20) is slidably connected with the inner wall of the cavity (19), a clamping column (21) is fixedly connected to one end, close to the ventilation port (7), of the sliding block (20), the clamping column (21) penetrates through the ventilation port (7) inwards and abuts against the side wall of the dustproof net (8), a spring (22) is fixedly connected between one end, far away from the clamping column (21), of the sliding block (20) and the inner end wall of the cavity (19), a strip-shaped sliding block opening (24) communicated with the cavity (19) is formed in the side wall of the protective shell (1), a pull button (23) is fixedly connected to the side wall of the protective shell (20), and a pull button (23) is fixedly connected to the pull rod, and the strip-shaped opening (24) penetrates through the outside.

6. The Internet of things core all-in-one machine convenient to mount according to claim 1, wherein the automatic temperature sensing control device comprises a metal cylinder (15) and a piston plate (16), the piston plate (16) is vertically, hermetically and slidably connected with the inner wall of the metal cylinder (15), a proper amount of low-boiling-point evaporating liquid (17) is arranged between the lower side wall of the piston plate (16) and the inner wall of the lower end of the metal cylinder (15), an elastic switch (18) is fixedly arranged on the inner wall of the upper end of the metal cylinder (15), and the elastic switch (18) is electrically connected with a driving motor (9) and a small fan (14).

7. The Internet of things core all-in-one machine convenient to mount as claimed in claim 6, wherein the metal cylinder (15) is made of a copper alloy material.

8. The use method of the Internet of things core all-in-one machine convenient to install according to claim 1, characterized by comprising the following steps:

s1, opening a cover plate (36) of the protective shell (1), and placing the all-in-one machine body (3) on the base plate (2) to align the positioning block (5) with the matching block (6);

s2, the rotating handle (4) is rotated, the first rotating rod (26) and the driving wheel (28) rotate, the driving belt (30) drives the driven wheel (29) to rotate, the second rotating rod (27) rotates along with the driving wheel, and the positioning block (5) is clamped with the matching block (6) along with the driving wheel;

s3, covering the cover plate (36), and buckling the lock catch to realize the fixed installation of the integrated machine body (3);

s4, when the dust screen (8) needs to be disassembled, the pull button (23) is pulled upwards, the sliding block (20) drives the clamping column (21) to contract into the cavity (19), the clamping column (21) is separated from the dust screen (8), and the dust screen (8) is taken down.

Technical Field

The invention relates to the technical field of Internet of things core all-in-one machines, in particular to an Internet of things core all-in-one machine convenient to install and a using method.

Background

The thing networking means through various devices and technologies such as various information sensor, radio frequency identification technology, global positioning system, laser scanner, gather any object or process that need monitor, connect, interdynamic in real time, and in the actual life, thing networking core all-in-one need tighten positioner many times with the help of the instrument when actual installation, and the installation is inconvenient, and the installation effectiveness is lower.

Disclosure of Invention

The invention aims to solve the defects that in the prior art, installation is inconvenient, and installation efficiency of workers on an Internet of things core all-in-one machine is low, and accordingly provides the Internet of things core all-in-one machine convenient to install and a using method.

In order to achieve the purpose, the invention adopts the following technical scheme:

an Internet of things core all-in-one machine convenient to install comprises a protective shell, a base plate and an all-in-one machine body, wherein the base plate is fixedly arranged on the inner wall of the lower side of the protective shell, the all-in-one machine body is fixedly arranged on the base plate, a frame body is fixedly arranged on the outer side of the all-in-one machine body, the frame body is of a hollow structure, positioning blocks are symmetrically arranged on two sides of the frame body, matching blocks matched with the positioning blocks are arranged on the inner wall of the protective shell, tightening devices matched with the positioning blocks are arranged in the frame body, ventilating openings are symmetrically formed in the side wall of the protective shell, matched dust screens are arranged in the ventilating openings, clamping and positioning devices matched with the dust screens are arranged in the side wall of the protective shell, a driving motor is fixedly arranged at the upper end of the inner side wall of the protective shell, a reciprocating lead screw is fixedly connected to an output shaft of the driving motor, one end, far away from the output shaft of the reciprocating lead screw, is rotatably connected with the inner wall of the other side of the protective shell, threaded connection has the removal nut on the reciprocal lead screw, the fixed stopper that is provided with of lateral wall on the removal nut, the lateral wall is provided with the spacing groove that matches with the stopper on the protective housing, remove the small-size fan of lateral wall fixedly connected with under the nut, and be provided with the automatic temperature sensing controlling means who matches with driving motor and small-size fan in the protective housing, the protective housing lateral wall rotates and is connected with the apron, be provided with the tapered end on the apron, and the protective housing lateral wall is provided with the hasp that matches with the tapered end.

Preferably, the tightening device comprises a first rotating rod and a plurality of second rotating rods, the second rotating rods are symmetrically arranged on two sides of the first rotating rod, the first rotating rod and the second rotating rods are rotatably connected with the inner wall of the frame body, one end of the first rotating rod outwards penetrates through the side wall of the frame body and is fixedly connected with a rotating handle, a matched bearing is arranged at the joint of the side wall of the frame body and the first rotating rod, a driving wheel is fixedly sleeved on the first rotating rod, a driven wheel is fixedly sleeved on the second rotating rod, each driving wheel is in transmission connection with the driven wheel through a transmission belt, a plurality of groups of first helical gears which are uniformly distributed are fixedly sleeved at one end of the second rotating rod, which is far away from the first rotating rod, second helical gears which are meshed with the first helical gears are arranged in the frame body, each second helical gear is rotatably connected with the inner side wall of the frame body through a corresponding threaded rod, and threaded sleeves are connected to the threaded rods, the threaded sleeve side wall is symmetrically connected with connecting rods, and each group of connecting rods outwards penetrates through the frame body side wall and is fixedly connected with the corresponding positioning block.

Preferably, the driving wheel and the driven wheel are both provided with anti-skid grains, and the transmission belt is a transmission belt with a V-shaped section.

Preferably, the frame body is provided with a U shape, and the positioning block and the matching block are connected in an inserting mode.

Preferably, the clamping and positioning device comprises a cavity and a sliding block, the sliding block is slidably connected with the inner wall of the cavity, one end, close to the ventilation opening, of the sliding block is fixedly connected with a clamping column, the clamping column penetrates through the ventilation opening inwards and is abutted to the side wall of the dust screen, one end, far away from the clamping column, of the sliding block is fixedly connected with a spring between the inner end wall of the cavity and the inner end wall of the sliding block, a strip-shaped opening communicated with the cavity is formed in the side wall of the protective shell, a pull button is fixedly connected with the side wall of the sliding block, and a pull rod penetrates through the strip-shaped opening and is fixedly connected with the pull button outwards.

Preferably, the automatic temperature sensing control device comprises a metal cylinder and a piston plate, the piston plate is vertically, hermetically and slidably connected with the inner wall of the metal cylinder in a sliding manner, a proper amount of low-boiling-point evaporating liquid is arranged between the lower side wall of the piston plate and the inner wall of the lower end of the metal cylinder, an elastic switch is fixedly arranged on the inner wall of the upper end of the metal cylinder, and the elastic switch is electrically connected with the driving motor and the small fan.

Preferably, the metal cylinder is made of a copper alloy material.

A use method of an Internet of things core all-in-one machine convenient to install comprises the following steps:

s1, opening the cover plate of the protective shell, and placing the integrated machine body on the base plate to align the positioning block with the matching block;

s2, the rotating handle is rotated, the first rotating rod and the driving wheel rotate, the driving belt drives the driven wheel to rotate, the second rotating rod rotates along with the driving wheel, and the positioning block is clamped with the matching block;

s3, covering the cover plate, and fastening the lock catch to realize the fixed installation of the integrated machine body;

s4, when the dust screen needs to be disassembled, the pull button is pulled upwards, the sliding block drives the clamping column to contract into the cavity, the clamping column is separated from the dust screen, and the dust screen can be taken down.

The invention has the beneficial effects that:

through the matching use of the transmission mechanisms such as the first rotating rod, the second rotating rod, the driving wheel, the driven wheel, the first bevel gear and the second bevel gear, when the first rotating rod is rotated in the forward direction, the positioning block is slowly inserted into the matching block, and when the first rotating rod is rotated in the reverse direction, the positioning block is slowly contracted from the matching block, so that the operation is relatively simple and convenient, a plurality of groups of bolts and nuts do not need to be screwed, and the installation efficiency of workers on the integrated machine is greatly improved;

through the sliding block, the card post, the cooperation of spring and draw the button is used can be comparatively convenient dismantles the dust screen from ventilative mouthful, in time wash and change the dust screen, avoid piling up the dust on the dust screen, influence the normal heat dissipation ventilation effect of protective housing, through automatic temperature sensing controlling means, with driving motor, reciprocal lead screw, the cooperation of removal nut and small-size fan is used, when the long-term work of all-in-one body leads to the protective housing in the high temperature, utilize low boiling evaporation liquid characteristics automatic start driving motor and the small-size fan of the evaporation of being heated, in time blow the cooling to the all-in-one body, the life of all-in-one body has been improved.

Drawings

Fig. 1 is a schematic structural diagram of an internet of things core all-in-one machine convenient to install according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic diagram of an internal structure of a frame of the internet of things core all-in-one machine convenient to mount according to the invention;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is an overall schematic diagram of an internet of things core all-in-one machine convenient to install.

In the figure: the device comprises a protective shell 1, a backing plate 2, an all-in-one machine body 3, a turning handle 4, a positioning block 5, a matching block 6, a ventilation opening 7, a dustproof net 8, a driving motor 9, a reciprocating screw rod 10, a movable nut 11, a limiting block 12, a limiting groove 13, a small fan 14, a metal cylinder 15, a piston plate 16, evaporated liquid with a low boiling point 17, an elastic switch 18, a cavity 19, a sliding block 20, a clamping column 21, a spring 22, a pull button 23, a strip-shaped opening 24, a frame 25, a first turning rod 26, a second turning rod 27, a driving wheel 28, a driven wheel 29, a transmission belt 30, a first helical gear 31, a second helical gear 32, a threaded rod 33, a threaded sleeve 34, a connecting rod 35 and a cover plate 36.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an internet of things core all-in-one machine convenient to install comprises a protective shell 1, a base plate 2 and an all-in-one machine body 3, wherein the base plate 2 is fixedly arranged on the inner wall of the lower side of the protective shell 1, the all-in-one machine body 3 is fixedly arranged on the base plate 2, a frame body 25 is fixedly arranged on the outer side of the all-in-one machine body 3, the frame body 25 is of a hollow structure, the frame body 25 is of a U shape, a positioning block 5 and a matching block 6 are connected in an inserting and moving mode, the matching mode can conveniently install and detach the all-in-one machine body 3, the positioning block 5 is symmetrically arranged on two sides of the frame body 25, the matching block 6 matched with the positioning block 5 is arranged on the inner wall of the protective shell 1, a tightening device matched with the positioning block 5 is arranged in the frame body 25 and comprises a first rotating rod 26 and a plurality of second rotating rods 27, the second rotating rods 27 are symmetrically arranged on two sides of the first rotating rod 26, the first rotating rod 26 and the second rotating rod 27 are rotatably connected with the inner wall of the frame body 25, one end of the first rotating rod 26 penetrates through the side wall of the frame body 25 outwards and is fixedly connected with a rotating handle 4, a matched bearing is arranged at the joint of the side wall of the frame body 25 and the first rotating rod 26, a driving wheel 28 is fixedly sleeved on the first rotating rod 26, a driven wheel 29 is fixedly sleeved on the second rotating rod 27, each driving wheel 28 is in transmission connection with the driven wheel 29 through a transmission belt 30, anti-skid grains are arranged on the driving wheel 28 and the driven wheel 29, the transmission belt 30 adopts a transmission belt 30 with a V-shaped cross section, the purpose of the arrangement is to avoid relative sliding when the driving wheel 28 drives the driven wheel 29, a plurality of groups of first helical gears 31 which are uniformly distributed are fixedly sleeved at one end of the second rotating rod 27 far away from the first rotating rod 26, second helical gears 32 which are meshed with the first helical gears 31 are arranged in the frame body 25, and each second helical gear 32 is in rotation connection with the inner side wall of the frame body 25 through corresponding threaded rods 33, the threaded rod 33 is in threaded connection with a threaded sleeve 34, the side wall of the threaded sleeve 34 is symmetrically connected with connecting rods 35, each group of connecting rods 35 outwards penetrates through the side wall of the frame body 25 and is fixedly connected with a corresponding positioning block 5, the positioning blocks 5 are slowly inserted into the matching blocks 6 when the first rotating rod 26 is rotated in the forward direction through the matching of the first rotating rod 26, the second rotating rod 27, the driving wheel 28, the driven wheel 29, the first bevel gears 31, the second bevel gears 32 and other transmission mechanisms, the positioning blocks 5 are slowly contracted from the matching blocks 6 when the first rotating rod 26 is rotated in the reverse direction, the operation is relatively simple and convenient, a plurality of groups of bolt nuts do not need to be screwed, and the installation efficiency of workers on the integrated machine body 3 is greatly improved;

the side wall of the protective shell 1 is symmetrically provided with a ventilation port 7, a matched dustproof net 8 is arranged in the ventilation port 7, the side wall of the protective shell 1 is internally provided with a clamping and positioning device matched with the dustproof net 8, the clamping and positioning device comprises a cavity 19 and a sliding block 20, the sliding block 20 is in sliding connection with the inner wall of the cavity 19, one end of the sliding block 20 close to the ventilation port 7 is fixedly connected with a clamping column 21, the clamping column 21 inwards penetrates through the ventilation port 7 to abut against the side wall of the dustproof net 8, a spring 22 is fixedly connected between one end of the sliding block 20 far away from the clamping column 21 and the inner end wall of the cavity 19, the side wall of the protective shell 1 is provided with a strip-shaped opening 24 communicated with the cavity 19, the side wall of the sliding block 20 is fixedly connected with a pull button 23, the sliding block 20, the clamping column 21, the spring 22 and the pull button 23 are matched to be used to conveniently disassemble the dustproof net 8 from the ventilation port 7, the dust screen 8 is cleaned and replaced in time, so that dust is prevented from being accumulated on the dust screen 8, and the normal heat dissipation and ventilation effects of the protective shell 1 are prevented from being influenced;

the upper end of the inner side wall of the protective shell 1 is fixedly provided with a driving motor 9, the output shaft of the driving motor 9 is fixedly connected with a reciprocating screw rod 10, one end of the reciprocating screw rod 10, which is far away from the output shaft of the driving motor 9, is rotatably connected with the inner wall of the other side of the protective shell 1, the reciprocating screw rod 10 is in threaded connection with a movable nut 11, the upper side wall of the movable nut 11 is fixedly provided with a limit block 12, the upper side wall of the protective shell 1 is provided with a limit groove 13 matched with the limit block 12, the lower side wall of the movable nut 11 is fixedly connected with a small fan 14, an automatic temperature sensing control device matched with the driving motor 9 and the small fan 14 is arranged in the protective shell 1, and the driving motor 9 and the small fan 14 are automatically started by utilizing the characteristics that the low-boiling-point evaporation liquid 17 is heated and evaporated when the temperature in the protective shell 1 is overhigh due to long-term work of the integrated machine body 3, in time carry out the cooling of blowing to all-in-one body 3, the life of all-in-one body 3 has been improved, automatic temperature sensing controlling means includes metal cylinder 15 and piston plate 16, metal cylinder 15 adopts the preparation of copper alloy material to form, piston plate 16 and the vertical sealed sliding connection of the 15 inner walls of metal cylinder, be provided with appropriate amount low boiling point evaporating liquid 17 under the piston plate 16 between lateral wall and the 15 lower extreme inner walls of metal cylinder, this low boiling point evaporating liquid 17 can be liquid dichloromethane, and the fixed elastic switch 18 that is provided with of the 15 upper end inner walls of metal cylinder, elastic switch 18 and driving motor 9 and small-size fan 14 electric connection, protective housing 1 lateral wall rotates and is connected with apron 36, be provided with the tapered end on the apron 36, and protective housing 1 lateral wall is provided with the hasp that matches with the tapered end.

A use method of an Internet of things core all-in-one machine convenient to install comprises the following steps:

s1, opening the cover plate 36 of the protective shell 1, and placing the all-in-one machine body 3 on the base plate 2 to align the positioning block 5 with the matching block 6;

s2, the rotating handle 4 is rotated, the first rotating rod 26 and the driving wheel 28 rotate, the driving belt 30 drives the driven wheel 29 to rotate, the second rotating rod 27 rotates along with the rotation, and the positioning block 5 is clamped with the matching block 6 along with the rotation;

s3, covering the cover plate 36, and fastening the lock catch to realize the fixed installation of the integrated machine body 3;

s4, when the dust screen 8 needs to be disassembled, the pull button 23 is pulled upwards, the sliding block 20 drives the clamping column 21 to contract into the cavity 19, the clamping column 21 is separated from the dust screen 8, and the dust screen 8 can be taken down.

In the invention, during installation, the rotating handle 4 is rotated, the first rotating rod 26 drives the driving wheel 28 to rotate, the driving wheel 28 drives the second rotating rod 27 to rotate through the transmission belt 30 and the driven wheel 29, the first bevel gear 31 fixedly sleeved on the second rotating rod 27 rotates along with the first bevel gear, the second bevel gear 32 meshed with the first bevel gear drives the threaded rod 33 to rotate along with the second bevel gear, the threaded sleeve 34 in threaded connection with the threaded rod 33 moves towards one end far away from the second bevel gear 32 along with the second bevel gear, the connecting rod 35 pushes the positioning block 5 and the matching block 6 to be clamped together with the first bevel gear, the integrated machine body 3 is fixedly installed, then the cover plate 36 is covered, the lock catch is buckled, in addition, when the temperature in the protective shell 1 is overhigh, the low-boiling-point evaporation liquid 17 arranged in the metal cylinder 15 is gasified along with the first bevel gear, the piston plate 16 is pushed upwards to extrude the elastic switch 18, the elastic switch 18 is opened along with the first bevel gear, the output shaft of the driving motor 9 drives the reciprocating screw rod 10 to rotate, the moving nut 11 connected with the screw thread drives the small fan 14 to perform uniform air blowing cooling on the surface of the all-in-one machine body 3 while reciprocating along the reciprocating screw rod 10, so that the load work of the all-in-one machine body 3 in a long-term early overheating environment is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.