阅读说明：本技术 一种适用于橡塑制品用的展示架 (Show shelf suitable for rubber and plastic products are used ) 是由 周道越 于 2018-07-12 设计创作，主要内容包括：本发明公开了一种适用于橡塑制品用的展示架,包括两个车体,两个车体之间共同设有连接装置,所述车体的上端固定有固定箱,所述固定箱内设有转动装置,所述转动装置上固定有固定杆,所述固定杆的上端贯穿固定箱的侧壁并延伸至固定箱的上端,所述固定杆上贯穿设有第一圆板和第二圆板,且第一圆板位于第二圆板的上端,所述第一圆板和第二圆板上均设有第一开口,且固定杆均固定在两个第一开口处,所述固定杆的上端固定有支撑板。本发明实现了对展示架的角度进行调节,同时提高了承载量,方便对橡塑制品进行分类放置的功能,避免了因角度不能调节,承载量小,无法进行分类导致影响展示效果的情况发生,操作简单,方便使用。(The invention discloses a display rack suitable for rubber and plastic products, which comprises two vehicle bodies, wherein a connecting device is jointly arranged between the two vehicle bodies, a fixed box is fixed at the upper end of each vehicle body, a rotating device is arranged in each fixed box, a fixed rod is fixed on each rotating device, the upper end of each fixed rod penetrates through the side wall of each fixed box and extends to the upper end of each fixed box, a first circular plate and a second circular plate penetrate through each fixed rod, the first circular plate is positioned at the upper end of the second circular plate, first openings are formed in the first circular plate and the second circular plate, the fixed rods are fixed at the two first openings, and a supporting plate is fixed at the upper end of each fixed rod. The angle adjusting device realizes the angle adjustment of the display rack, simultaneously improves the bearing capacity, is convenient for the classified placement of the rubber and plastic products, avoids the phenomenon that the display effect is influenced because the angle cannot be adjusted and the bearing capacity is small and cannot be classified, and is simple to operate and convenient to use.)

1. A show shelf suitable for rubber and plastic products is used, includes two automobile bodies (13), its characterized in that: a connecting device is jointly arranged between the two vehicle bodies (13), a fixed box (15) is fixed at the upper end of each vehicle body (13), a rotating device is arranged in each fixed box (15), a fixed rod (3) is fixed on each rotating device, the upper end of each fixed rod (3) penetrates through the side wall of each fixed box (15) and extends to the upper end of each fixed box (15), a first circular plate (5) and a second circular plate (18) are arranged on each fixed rod (3) in a penetrating mode, each first circular plate (5) is located at the upper end of each second circular plate (18), first openings are formed in each first circular plate (5) and each second circular plate (18), the fixed rods (3) are fixed at the two first openings, a supporting plate (2) is fixed at the upper end of each fixed to each fixed rod (3), a placing box (1) is fixed at the upper end of each supporting plate (2), and bearing blocks (19) are fixed on two sides of the upper ends of the vehicle, a vertical plate (20) is fixed at the upper end of the bearing block (19), a rotating plate (8) is rotatably connected at the upper end of the vertical plate (20), a second sliding groove (25) is arranged at the lower end of the rotating plate (8), a second sliding block (33) is installed in the second sliding groove (25), fixing boxes (12) are fixed at both sides of the upper end of the vehicle body (13), the two fixing boxes (12) are respectively positioned at both sides of the two bearing blocks (19), a lifting device is arranged in each fixing box (12), a lead screw (7) is fixed on each lifting device, one end of each lead screw (7) penetrates through the side wall of each fixing box (12) and is rotatably connected to the lower end of each second sliding block (33), a fixing plate (6) is fixed at one side of the rotating plate (8), a placing groove (45) is arranged at the upper end of each fixing plate (6), and a clamping device is arranged on one side wall of each placing groove, a placing device is arranged on one side of the fixed box (12).

2. The display rack suitable for rubber and plastic products as claimed in claim 1, wherein the connecting device comprises a mounting plate (26) fixed on one side of one of the vehicle bodies (13), the mounting plate (26) is provided with two first threaded through holes, one side of the vehicle body (13) is provided with two threaded blind holes corresponding to the first threaded through holes, the first threaded through holes are internally provided with bolts (27) in a penetrating manner, one ends of the bolts (27) extend into the threaded blind holes, one side of the mounting plate (26) is fixed with a moving rod (28), one side of the other vehicle body (13) is fixed with a connecting rod (32), one end of the connecting rod (32) is provided with a limiting groove (31), one end of the moving rod (28) extends through the side wall of the connecting rod (32) and extends into the limiting groove (31), one side of the connecting rod (32) is provided with a jack, one side of the movable rod (28) is provided with a plurality of blind holes (30) at equal intervals, an inserting rod (29) penetrates through the inserting hole, and one end of the inserting rod (29) extends into one of the blind holes (30).

3. The display rack suitable for rubber and plastic products according to claim 1, wherein the rotating device comprises a partition plate (39) between opposite side walls in the fixed box (15), a driving motor (17) is fixed on one side of the fixed box (15), an output shaft of the driving motor (17) penetrates through the side wall of the fixed box (15) and extends into the fixed box (15), a cross rod is fixed at the tail end of the output shaft of the driving motor (17), one end of the cross rod penetrates through the side wall of the partition plate (39) and extends to one side of the partition plate (39), a third bevel gear (40) is fixed at one end of the cross rod, a rotating rod (42) is rotatably connected to the bottom in the fixed box (15), a fourth bevel gear (41) is fixed on the rotating rod (42), and the third bevel gear (40) and the fourth bevel gear (41) are meshed with each other, the upper end of the rotating rod (42) is fixed at the lower end of the fixing rod (3).

4. A display stand suitable for rubber and plastic products according to claim 1, the lifting device comprises a first screw (44) rotatably connected between the opposite side walls in the fixed box (12), a second bevel gear (24) is fixed on the first screw (44), a crank (10) penetrates through one side of the fixed box (12), a first bevel gear (23) is fixed at one end of the crank (10), the second bevel gear (24) and the first bevel gear (23) are meshed with each other, the opposite side walls in the fixed box (12) are respectively provided with a first sliding chute (22), the two first sliding chutes (22) are internally provided with a first sliding block (21) together, the first sliding block (21) is provided with a second threaded through hole, and the first screw rod (44) penetrates through the second threaded through hole, and the lower end of the screw rod (7) is fixed at the upper end of the first sliding block (21).

5. The display rack suitable for rubber and plastic products according to claim 1, wherein the clamping device comprises a second screw (35) penetrating through a side wall of one end of the placing groove (45), one side of the placing groove (45) is provided with a third threaded through hole, the second screw (35) penetrates through the third threaded through hole, one end of the second screw (35) is fixed with a rotating wheel (34), the other end of the second screw (35) is rotatably connected with a clamping plate (36), two third sliding grooves (38) are formed in the bottom of the placing groove (45), third sliding blocks (37) are installed in the third sliding grooves (38), and the upper ends of the two third sliding blocks (37) are fixed at the lower end of the clamping plate (36).

6. The display rack for rubber and plastic products as claimed in claim 1, wherein the placing device comprises a placing plate (9) hinged on one side of a fixed box (12), a telescopic rod (11) is rotatably connected on one side of the fixed box (12), the placing plate (9) is positioned at the upper end of the telescopic rod (11), and the upper end of the telescopic rod (11) is rotatably connected at the lower end of the placing plate (9).

7. The display rack suitable for rubber and plastic products according to claim 1, wherein the upper ends of the first circular plate (5) and the second circular plate (18) are provided with two grooves (43), the upper ends of the first circular plate (5) and the second circular plate (18) are fixed with two stoppers (4), one groove (43) and one stopper (4) on the same side form a group, and the grooves (43) and the stoppers (4) in the same group correspond to each other.

8. A display stand suitable for rubber and plastic products according to claim 1, wherein the four corners of the lower end of the vehicle body (13) are provided with rollers (14).

9. A display stand suitable for rubber-plastic products according to claim 1, characterized in that the fixed box (15) is fixed with carrier plates (16) on both sides.

Technical Field

The invention relates to the technical field of display stands, in particular to a display stand suitable for rubber and plastic products.

Background

Rubber and plastic products are various in variety and can be classified into static sealing products and dynamic sealing products according to working conditions. O-rings are widely used for sealing of static and reciprocating machine parts. Oil seals are widely used for sealing rotating shafts. The O-shaped ring and the oil seal account for more than half of the total number of sealing products. The rubber sealing element is made to contact with rubber to be sealed, and if the oil seal is made to contact with the rotating shaft surface in certain pressure and has no leakage of oil under the action of fluid lubrication, the O-shaped ring is used to apply compression force to the rubber ring to realize sealing, so that the rubber material has high elasticity, high oil resistance and high ageing resistance.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a display rack suitable for rubber and plastic products.

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

a display rack suitable for rubber and plastic products comprises two vehicle bodies, wherein a connecting device is jointly arranged between the two vehicle bodies, a fixed box is fixed at the upper end of each vehicle body, a rotating device is arranged in the fixed box, a fixed rod is fixed on the rotating device, the upper end of the fixed rod penetrates through the side wall of the fixed box and extends to the upper end of the fixed box, a first circular plate and a second circular plate are arranged on the fixed rod in a penetrating manner, the first circular plate is positioned at the upper end of the second circular plate, first openings are respectively arranged on the first circular plate and the second circular plate, the fixed rods are respectively fixed at the two first openings, a supporting plate is fixed at the upper end of the fixed rod, a placing box is fixed at the upper end of the supporting plate, bearing blocks are respectively fixed at the two sides of the upper end of each vehicle body, a vertical plate is fixed at the upper end of each bearing block, a rotating plate is rotatably connected at, install the second slider in the second spout, the upper end both sides of automobile body all are fixed with fixed box, and two fixed boxes are located the both sides of two carrier blocks respectively, be equipped with elevating gear in the fixed box, the last lead screw that is fixed with of elevating gear, the one end of lead screw runs through the lateral wall of fixed box and rotates the lower extreme of connecting at the second slider, one side of rotor plate is fixed with the fixed plate, the upper end of fixed plate is equipped with the standing groove, be equipped with clamping device on one end lateral wall of standing groove, one side of fixed box is equipped with placer.

Preferably, connecting device is including fixing the mounting panel in one of them automobile body one side, be equipped with two first screw thread through-holes on the mounting panel, one side of this automobile body is equipped with two screw thread blind holes that correspond with first screw thread through-hole, run through in the first screw thread through-hole and be equipped with the bolt, and the one end of bolt extends to in the screw thread blind hole, one side of mounting panel is fixed with the carriage release lever, and one side of another automobile body is fixed with the connecting rod, the one end of connecting rod is equipped with the spacing groove, the one end of carriage release lever runs through the lateral wall of connecting rod and extends to the spacing inslot, one side of connecting rod is equipped with the jack, one side equidistant a plurality of blind holes that are equipped with of carriage release lever, run through in the jack and be equipped with the inserted bar.

Preferably, rotating device includes the baffle between the relative lateral wall in the fixed incasement, one side of fixed case is fixed with driving motor, driving motor's output shaft runs through the lateral wall of fixed case and extends to fixed incasement, driving motor's output shaft end is fixed with the horizontal pole, the one end of horizontal pole runs through the lateral wall of baffle and extends to one side of baffle, the one end of horizontal pole is fixed with third bevel gear, bottom rotation in the fixed incasement is connected with the dwang, be fixed with fourth bevel gear on the dwang, and third bevel gear and fourth bevel gear intermeshing, the lower extreme at the dead lever is fixed to the upper end of dwang.

Preferably, elevating gear is including rotating the first screw rod of connection between the relative lateral wall in the fixed box, be fixed with second bevel gear on the first screw rod, one side of fixed box is run through and is equipped with the crank, the one end of crank is fixed with first bevel gear, and second bevel gear and first bevel gear intermeshing, all be equipped with first spout on the relative lateral wall in the fixed box, install first slider jointly in two first spouts, be equipped with second screw thread through-hole on the first slider, and first screw rod runs through second screw thread through-hole, the upper end at first slider is fixed to the lower extreme of lead screw.

Preferably, the clamping device comprises a second screw rod penetrating through the side wall of one end of the placing groove, a third threaded through hole is formed in one side of the placing groove, the second screw rod penetrates through the third threaded through hole, a rotating wheel is fixed at one end of the second screw rod, the other end of the second screw rod is rotatably connected with a clamping plate, two third sliding grooves are formed in the bottom of the placing groove, third sliding blocks are installed in the third sliding grooves, and the upper ends of the two third sliding blocks are fixed at the lower end of the clamping plate.

Preferably, the placing device comprises a placing plate hinged to one side of the fixing box, one side of the fixing box is rotatably connected with a telescopic rod, the placing plate is located at the upper end of the telescopic rod, and the upper end of the telescopic rod is rotatably connected to the lower end of the placing plate.

Preferably, the upper ends of the first circular plate and the second circular plate are both provided with two grooves, the upper ends of the first circular plate and the second circular plate are both fixed with two stoppers, one groove and one stopper on the same side are in one group, and the grooves and the stoppers in the same group correspond to each other.

Preferably, the four corners of the lower end of the vehicle body are provided with rollers.

Preferably, both sides of the fixing box are fixed with a bearing plate.

The invention has the following advantages:

1. when the bearing capacity is adjusted, the telescopic rod, the placing plate and the fixing plate are matched, so that the function of displaying various rubber and plastic products at the same time is realized, the practicability of the display rack is improved, and the condition that a plurality of display racks are required to be used or a plurality of times of displaying are required is avoided;

2. when the angle is adjusted, the first screw rod rotates to drive the first sliding block to move through the matching among the first screw rod, the first sliding block, the screw rod and the rotating plate, the first sliding block moves to drive the screw rod to move, and the screw rod moves to drive the rotating plate to rotate, so that the function of adjusting the angle of the rubber and plastic product is realized, and the flexibility is strong;

3. when the rubber and plastic products are displayed in a classified manner, the first circular plate, the second circular plate, the bearing plate and the placing box are matched, so that the function of placing the rubber and plastic products in a classified manner is realized, and the phenomenon that the display effect is influenced due to the fact that the rubber and plastic products cannot be classified is avoided.

Drawings

FIG. 1 is a schematic view of an external structure of a display shelf suitable for rubber products according to the present invention;

FIG. 2 is a schematic view of the internal structure of a display rack suitable for rubber products according to the present invention;

FIG. 3 is a top view of a body of a display rack adapted for rubber articles according to the present invention;

FIG. 4 is an enlarged view of a portion A of a display shelf for rubber products according to the present invention;

FIG. 5 is an enlarged view of a display shelf for rubber products at point B in accordance with the present invention;

FIG. 6 is an enlarged view of a display shelf suitable for rubber products according to the present invention at position C;

fig. 7 is an enlarged view of a display shelf suitable for rubber products according to the present invention at D.

In the figure: the device comprises a placing box 1, a supporting plate 2, a fixing rod 3, a stop 4, a first circular plate 5, a fixing plate 6, a lead screw 7, a rotating plate 8, a placing plate 9, a crank 10, an expansion rod 11, a fixing box 12, a vehicle body 13, rollers 14, a fixing box 15, a bearing plate 16, a driving motor 17, a second circular plate 18, a bearing block 19, a vertical plate 20, a first sliding block 21, a first sliding chute 22, a first bevel gear 23, a second bevel gear 24, a second sliding chute 25, a mounting plate 26, a bolt 27, a moving rod 28, an insertion rod 29, a blind hole 30, a limiting groove 31, a connecting rod 32, a second sliding block 33, a rotating wheel 34, a second screw rod 35, a clamping plate 36, a third sliding block 37, a third sliding chute 38, a partition plate 39, a third bevel gear 40, a fourth bevel gear 41, a rotating rod 42, a groove 43, a first screw rod 44 and a.

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. 1-7, a display rack suitable for rubber and plastic products, comprising two car bodies 13 for supporting and fixing, wherein four corners of the lower end of the car body 13 are respectively provided with a roller 14 for moving, a connecting device is commonly arranged between the two car bodies 13 for connecting the two car bodies 13 according to requirements, the upper end of the car body 13 is fixed with a fixed box 15, a rotating device is arranged in the fixed box 15, the rotating device is fixed with a fixed rod 3, the upper end of the fixed rod 3 penetrates through the side wall of the fixed box 15 and extends to the upper end of the fixed box 15, the fixed rod 3 is penetrated with a first circular plate 5 and a second circular plate 18, the first circular plate 5 is positioned at the upper end of the second circular plate 18, the first circular plate 5 and the second circular plate 18 are both provided with a first opening, the fixed rod 3 is fixed at the two first openings, the rotating device rotates the fixed rod 3 to drive the fixed rod 3 to rotate, the fixed rod 3 rotates, the angle is convenient to adjust, and the display effect is enhanced;

a supporting plate 2 is fixed at the upper end of the fixed rod 3, a placing box 1 is fixed at the upper end of the supporting plate 2, rubber and plastic products are conveniently placed, bearing blocks 19 are fixed on two sides of the upper end of a vehicle body 13, a vertical plate 20 is fixed at the upper end of each bearing block 19, a rotating plate 8 is rotatably connected at the upper end of each vertical plate 20, a second sliding groove 25 is arranged at the lower end of each rotating plate 8, a second sliding block 33 is installed in each second sliding groove 25, fixed boxes 12 are fixed on two sides of the upper end of the vehicle body 13, the two fixed boxes 12 are respectively positioned on two sides of the two bearing blocks 19, a lifting device is arranged in each fixed box 12, a lead screw 7 is fixed on each lifting device, one end of each lead screw 7 penetrates through the side wall of each fixed box 12 and is rotatably connected to the lower end of each second sliding block 33, a fixed plate 6 is fixed on one side of each rotating plate 8, a placing groove, both sides of the fixed box 15 are fixed with bearing plates 16, the lifting device moves to drive the screw rod 7 to move, the screw rod 7 moves to drive the rotating plate 8 to rotate, the angle of the rotating plate 8 is convenient to adjust, the rubber and plastic product is clamped through the clamping device, and the stability of the rubber and plastic product is improved.

In the invention, the connecting device comprises a mounting plate 26 fixed on one side of one of the vehicle bodies 13, two first threaded through holes are arranged on the mounting plate 26, two threaded blind holes corresponding to the first threaded through holes are arranged on one side of the vehicle body 13, a bolt 27 penetrates through the first threaded through hole, one end of the bolt 27 extends into the threaded blind holes, so that the mounting and the dismounting are convenient, a moving rod 28 is fixed on one side of the mounting plate 26, a connecting rod 32 is fixed on one side of the other vehicle body 13, a limiting groove 31 is arranged at one end of the connecting rod 32, one end of the moving rod 28 penetrates through the side wall of the connecting rod 32 and extends into the limiting groove 31, one side of the connecting rod 32 is provided with a jack, a plurality of blind holes 30 are arranged on one side of the moving rod 28 at equal intervals, an inserting rod 29 penetrates through the jack, one end of the inserting rod 29 extends into one of the blind holes 30, so, the flexibility is strong.

In the invention, the rotating device comprises a partition 39 between opposite side walls in a fixed box 15, a driving motor 17 is fixed on one side of the fixed box 15, an output shaft of the driving motor 17 penetrates through the side wall of the fixed box 15 and extends into the fixed box 15, a cross bar is fixed at the tail end of the output shaft of the driving motor 17, the output shaft of the driving motor 17 rotates to drive the cross bar to rotate, one end of the cross bar penetrates through the side wall of the partition 39 and extends to one side of the partition 39, a third bevel gear 40 is fixed at one end of the cross bar, the cross bar rotates to drive the third bevel gear 40 to rotate, a rotating rod 42 is rotatably connected with the bottom in the fixed box 15, a fourth bevel gear 41 is fixed on the rotating rod 42, the third bevel gear 40 and the fourth bevel gear 41 are mutually meshed, the upper end of the rotating rod 42 is fixed at the lower end of the fixed rod 3, the third bevel gear 40 rotates to drive the fourth bevel gear 41 to, the rotating rod 42 rotates to drive the fixing rod 3 to rotate, and rubber and plastic products are conveniently displayed from a plurality of angles.

In the invention, the lifting device comprises a first screw 44 which is rotatably connected between opposite side walls in a fixed box 12, a second bevel gear 24 is fixed on the first screw 44, a crank handle 10 penetrates through one side of the fixed box 12, a first bevel gear 23 is fixed at one end of the crank handle 10, the second bevel gear 24 and the first bevel gear 23 are meshed with each other, the crank handle 10 rotates to drive the first bevel gear 23 to rotate, the first bevel gear 23 rotates to drive the second bevel gear 24 to rotate, opposite side walls in the fixed box 12 are provided with first sliding chutes 22, a first sliding block 21 is installed in each of the two first sliding chutes 22, a second threaded through hole is arranged on each first sliding block 21, the first screw 44 penetrates through the second threaded through hole, the lower end of a screw 7 is fixed at the upper end of the first sliding block 21, the second bevel gear 24 rotates to drive the first screw 44 to rotate, the first screw 44 rotates to drive the first sliding block 21 to move, the first sliding block 21 moves to drive the screw rod 7 to move, so that the angle of the rotating plate 8 can be conveniently adjusted, and the flexibility is strong.

According to the invention, the clamping device comprises a second screw 35 penetrating through the side wall of one end of the placing groove 45, a third threaded through hole is formed in one side of the placing groove 45, the second screw 35 penetrates through the third threaded through hole, a rotating wheel 34 is fixed at one end of the second screw 35, the other end of the second screw 35 is rotatably connected with a clamping plate 36, the rotating wheel 34 rotates to drive the second screw 35 to rotate, the second screw 35 rotates to drive the clamping plate 36 to move, two third sliding grooves 38 are formed in the bottom of the placing groove 45, third sliding blocks 37 are installed in the third sliding grooves 38, the upper ends of the two third sliding blocks 37 are fixed at the lower end of the clamping plate 36, the clamping plate 36 can conveniently move, the resistance encountered by the clamping plate 36 during moving is reduced, the rubber and plastic products can be conveniently clamped and fixed, and the stability is improved.

According to the invention, the placing device comprises a placing plate 9 hinged on one side of a fixed box 12, one side of the fixed box 12 is rotatably connected with a telescopic rod 11, the placing plate 9 is positioned at the upper end of the telescopic rod 11, the upper end of the telescopic rod 11 is rotatably connected to the lower end of the placing plate 9, and the position of the placing plate 9 is convenient to adjust so as to place the rubber and plastic product.

According to the invention, the two grooves 43 are respectively arranged at the upper ends of the first circular plate 5 and the second circular plate 18, the two stop blocks 4 are respectively fixed at the upper ends of the first circular plate 5 and the second circular plate 18, one groove 43 and one stop block 4 at the same side form a group, the grooves 43 and the stop blocks 4 in the same group correspond to each other, so that rubber and plastic products can be conveniently placed, and meanwhile, the rubber and plastic products can be classified, and the practicability is strong.

In the invention, when in use, the vehicle body 13 is moved to a proper position, the crank 10 is rotated to drive the first bevel gear 23 to rotate, the first bevel gear 23 is rotated to drive the second bevel gear 24 to rotate, the second bevel gear 24 is rotated to drive the first screw 44 to rotate, the first screw 44 is rotated to drive the first slide block 21 to move, the first slide block 21 is moved to drive the screw 7 to move, the screw 7 drives the second slide block 33 to slide in the second chute 25, so as to adjust the angle of the rotating plate 8, after the angle is adjusted, the rubber and plastic product to be displayed is placed in the placing groove 45, the rotating wheel 34 is rotated to drive the second screw 35 to rotate, the second screw 35 drives the clamping plate 36 to move, so as to clamp the rubber and plastic product for fixing, then other rubber and plastic products are placed in the groove 43 and are supported by the stopper 4, the output shaft of driving motor 17 rotates and drives third bevel gear 40 and rotate, third bevel gear 40 rotates and drives fourth bevel gear 41 and rotate, fourth bevel gear 41 rotates and drives dwang 42 and rotate, dwang 42 rotates and drives dead lever 3 and rotate, dead lever 3 rotates and drives first plectane 5 and second plectane 18 and rotate, thereby conveniently demonstrate the rubber and plastic goods from a plurality of angles, then telescopic link 11 drives when removing and places board 9 and rotates, after the position adjustment that will place board 9 is good, also can place the rubber and plastic goods on placing board 9, also can place the rubber and plastic goods on loading board 16, thereby conveniently demonstrate.

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.