Acrylic plate with bending resistance

Abstract

The utility model relates to the related technical field of acrylic plates, in particular to an acrylic plate with anti-bending capability, which comprises an acrylic plate main body, the acrylic plate main body is divided into an upper piece and a lower piece, and the upper side and the lower side of the middle part of the acrylic plate main body close to the surface of one side of the acrylic plate main body are respectively provided with two edge covering protection plates. And a group of regular hexagonal through grooves are formed in the side surfaces of the edge covering protection plate and the acrylic plate main body at equal intervals. The improved acrylic plate with the anti-bending capability is provided with the interlayer protection plates and the fixed connecting rods, and the interlayer protection plates and the fixed connecting rods are arranged in the middles of the two edge covering protection plates at equal intervals, so that pressing blocks can be extruded by the fixed connecting rods to pop clamping plates into grooves of the interlayer protection plates; and therefore, the edge covering protection plate and the acrylic plate main body can be prevented from being bent in the transverse position through the structure of the interlayer protection plate and the fixed connecting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of acrylic plate, specifically is acrylic plate with bending resistance. BACKGROUND

[0002] Acrylic is a product after special treatment of organic glass, it has the advantages of good light transmission, bright color, many color types and flat form, and due to its special properties, its service life is long, and it is widely used in daily life.

[0003] The surface of the acrylic plate is smooth and beautiful when in use, and special patterns and characters can be printed, but the main body will bend after long-term use under the influence of the outside world, which not only affects the appearance, but also affects the service life.

[0004] The inventor found that the prior art has the following problems in the process of realizing the utility model: 1. The surface of the traditional acrylic plate will be bent and wrinkled after long-term use, which will affect subsequent use; 2. The side protection plate of the traditional acrylic plate will exceed the edge of the protection structure when fixed, affecting subsequent installation and use. UTILITY MODEL CONTENT

[0005] The utility model aims at providing acrylic plate with bending resistance to solve the problem of bending of traditional acrylic plate and the problem of fixed structure affecting installation and splicing. To achieve the above purpose, the utility model provides the following technical scheme: acrylic plate with bending resistance, including acrylic plate body, the acrylic plate body is divided into two parts, and the middle part of the acrylic plate body is provided with two edge protection plates on the upper and lower sides of the side surface of the acrylic plate body, a group of regular hexagonal through grooves are arranged on the side surface of the edge protection plate and the acrylic plate body at equal intervals, and a group of interlayer protection plates are arranged on the side surface of the edge protection plate close to the other edge protection plate, and a fixed connecting rod is arranged in the middle gap of the interlayer protection plate.

[0006] The through groove of the edge protection plate is provided with a fixed screw, and the middle part of the fixed screw is provided with a screw connection assembly, a group of clamping block assemblies are arranged on one side of the middle part of the edge protection plate close to the fixed screw, and a pull rope is arranged on one end of the clamping block assembly close to the center of the cross section of the fixed screw, the other end of the pull rope is provided with a pressing rod, and the middle part of the pressing rod is provided with a connecting ring.

[0007] The left and right side surfaces of the sandwich protective plate and the fixed connecting rod are provided with a row of circular through grooves at equal intervals, and the interior of the through grooves is provided with a bending-resistant cross bar.

[0008] The end of the bending-resistant cross bar is provided with a slope connecting rod, and the end of the slope connecting rod close to the central axis of the bending-resistant cross bar is inclined.

[0009] The middle part of the bending-resistant cross bar is provided with a group of sliding rings at equal intervals.

[0010] Further preferably, the length of the fixed screw is greater than the sum of the depth of the through groove of the side surface of the edge protective plate and the depth of the groove of the acrylic plate body, the thread length of the end of the fixed screw close to the edge protective plate is equal to the depth of the groove of the acrylic plate body, the side surface of the pressing rod is slidingly connected to the interior of the groove of the middle part of the fixed screw, the middle part of the pressing rod is slidingly connected to the interior of the inner side surface of the connecting ring, the outer surface of the connecting ring is provided with four rectangular through grooves at equal intervals, and the end of the pull rope close to the pressing rod is fixed to the middle surface of the pressing rod by penetrating the middle part of the rectangular groove of the connecting ring.

[0011] Further preferably, the end of the clamping block assembly close to the screw connecting assembly is connected to the surface of the screw connecting assembly by a spring, the side surface of the clamping block assembly close to the edge protective plate is inclined, the outer surface of the connecting ring is fixed to the inner wall of the screw connecting assembly by a fixed column, and the side surface of the screw connecting assembly close to the end of the fixed screw is slidingly connected to the groove inner wall of the fixed screw by a spring.

[0012] Further preferably, the front and rear ends of the fixing assembly are symmetrically slotted and fixed to the inner walls of the upper ends of the front and rear sides of the rectangular slot of the edge protection plate, and the middle portions of the bottom ends of the inner walls of the front and rear sides of the fixing assembly are provided with rectangular through slots, and the width of the rectangular through slot is equal to the cross-sectional width of the clamping plate, and the one end of the sliding slope block close to the clamping plate is fixed to the middle portion of the surface of the one end of the clamping plate inside the interlayer protection plate, and the other end of the sliding slope block close to the pressing block is inclined.

[0013] Further preferably, the front and rear ends of the fixing assembly are symmetrically slotted and fixed to the inner walls of the upper ends of the rectangular slot of the edge protection plate, and the middle portions of the bottom ends of the inner walls of the front and rear sides of the fixing assembly are provided with rectangular through slots, and the width of the rectangular through slot is equal to the cross-sectional width of the clamping plate, and the one end of the sliding slope block close to the clamping plate is fixed to the middle portion of the surface of the one end of the clamping plate inside the interlayer protection plate, and the other end of the sliding slope block close to the pressing block is inclined.

[0014] Further preferably, the front and rear ends of the fixing assembly are symmetrically slotted and fixed to the inner walls of the upper ends of the rectangular slot of the edge protection plate, and the middle portions of the bottom ends of the inner walls of the front and rear sides of the fixing assembly are provided with rectangular through slots, and the width of the rectangular through slot is equal to the cross-sectional width of the clamping plate, and the one end of the sliding slope block close to the clamping plate is fixed to the middle portion of the surface of the one end of the clamping plate inside the interlayer protection plate, and the other end of the sliding slope block close to the pressing block is inclined.

[0015] Further preferably, the front and rear ends of the fixing assembly are symmetrically slotted and fixed to the inner walls of the upper ends of the rectangular slot of the edge protection plate, and the middle portions of the bottom ends of the inner walls of the front and rear sides of the fixing assembly are provided with rectangular through slots, and the width of the rectangular through slot is equal to the cross-sectional width of the clamping plate, and the one end of the sliding slope block close to the clamping plate is fixed to the middle portion of the surface of the one end of the clamping plate inside the interlayer protection plate, and the other end of the sliding slope block close to the pressing block is inclined.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] The utility model discloses, be provided with interlayer protection board and fixed connecting rod, through the interlayer protection board and fixed connecting rod of equal interval of being provided with in the middle part of two edge covering protection board, and through the interlocking board and fixed assembly, the interlayer protection board is clamped and fixed in the surface of edge covering protection board, and can be through fixed connecting rod extrusion press button block and interlocking board is popped into the groove inside interlayer protection board, to make edge covering protection board and acrylic plate main part can pass through the structure of interlayer protection board and fixed connecting rod, avoid the bending of own transverse position, and be provided with anti -bending cross bar in the round through -going groove of interlayer protection board and fixed connecting rod, make acrylic plate main part and the longitudinal surface of edge covering protection board avoid bending.

[0018] The utility model discloses, be provided with fixed screw and interlocking block component, through the fixed screw of edge slot setting of acrylic plate main part and edge covering protection board, and through spring setting screw connection component and press rod in the middle part slot of fixed screw, make when fixing the end of fixed screw, can press press rod and the other end of fixed screw, make press rod through drawstring and draw interlocking block component and interlock into the slot inner wall of edge covering protection board, then release press rod and fixed screw, finally press rod and the end surface of fixed screw flush with the surface of edge covering protection plate. ACCURACY OF DRAWINGS

[0019] Figure 1 It is whole structure schematic drawing for the utility model;

[0020] Figure 2 It is interlayer protection board enlarged structure schematic drawing for the utility model;

[0021] Figure 3 It is edge covering protection plate enlarged structure schematic drawing for the utility model;

[0022] Figure 4 It is fixed screw enlarged structure schematic drawing for the utility model;

[0023] Figure 5 It is interlocking block component enlarged structure schematic drawing for the utility model;

[0024] Figure 6 It is sliding ring enlarged structure schematic drawing for the utility model;

[0025] Figure 7 It is fixed assembly enlarged structure schematic drawing for the utility model.

[0026] In the figure: 1, acrylic plate main body; 2, edge protection plate; 3, sandwich protection plate; 4, fixed connecting rod; 5, anti-bending crossbar; 6, clamping cylinder; 7, fixed screw; 8, screw connection assembly; 9, clamping block assembly; 10, connecting ring; 11, pressing rod; 12, pull rope; 13, sliding ring; 14, connecting slope; 15, slope connecting rod; 16, fixing assembly; 17, pressing block; 18, sliding slope block; 19, clamping plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Please refer to Figures 1 to 7 The present application provides a technical scheme: an acrylic plate with bending resistance, comprising an acrylic plate main body 1, the acrylic plate main body 1 is divided into two parts, and two edge protection plates 2 are arranged on the upper and lower sides of the middle part of the acrylic plate main body 1, the side surfaces of the edge protection plates 2 and the acrylic plate main body 1 are evenly provided with a group of hexagonal through grooves, and a group of sandwich protection plates 3 are arranged on the side surface of the edge protection plate 2 close to the other side of the edge protection plate 2, and a fixed connecting rod 4 is arranged in the gap of the middle part of the sandwich protection plate 3;

[0029] The inside of the through groove of the edge protection plate 2 is provided with a fixed screw 7, the middle part of the fixed screw 7 is provided with a screw connection assembly 8, one side of the screw connection assembly 8 close to the middle part of the edge protection plate 2 is provided with a group of clamping block assemblies 9, one end of the clamping block assembly 9 close to the cross-sectional center of the fixed screw 7 is provided with a pull rope 12, the other end of the pull rope 12 is provided with a pressing rod 11, and the middle part of the pressing rod 11 is sleeved with a connecting ring 10;

[0030] The left and right side surfaces of the sandwich protection plate 3 and the fixed connecting rod 4 are evenly provided with a row of circular through grooves, and the inside of the through groove is provided with an anti-bending crossbar 5, the middle part of the front and rear sides of the anti-bending crossbar 5 is evenly provided with a group of circular through grooves, and the inside of the circular through groove is provided with a clamping cylinder 6;

[0031] The slope connecting rod 15 is inclined at the left end close to the central axis of the anti-bending cross bar 5, and the slope surface of the slope connecting rod 15 is tightly attached to the connecting slope 14. A group of sliding rings 13 are equidistantly sleeved on the middle part of the anti-bending cross bar 5.

[0032] A group of rectangular grooves are equidistantly formed in the middle part of the side surface of the edge protection plate 2 close to the interlayer protection plate 3, and the fixed assembly 16 is arranged in the groove. A rectangular slot is formed in the side surface of the fixed assembly 16 close to the middle part of the interlayer protection plate 3, and a group of sliding slope blocks 18 are arranged in the rectangular slot. The end of the sliding slope block 18 close to the inner wall of the front and rear sides of the fixed assembly 16 is provided with a clamping plate 19, and the end of the sliding slope block 18 close to the middle part of the interlayer protection plate 3 is provided with a pressing block 17.

[0033] In this embodiment, as shown in Figure 4 and Figure 5 The length of the fixed screw 7 is greater than the sum of the depth of the side surface through slot of the acrylic plate body 1 and the edge protection plate 2, and the threaded length of the end of the fixed screw 7 close to the edge protection plate 2 is equal to the groove depth of the acrylic plate body 1. The side surface of the pressing rod 11 is slidingly connected to the groove inside the middle part of the fixed screw 7. The middle part of the pressing rod 11 penetrates the inner side surface of the connecting ring 10. The outer surface of the connecting ring 10 is equidistantly provided with four rectangular through slots. The end of the pull rope 12 close to the pressing rod 11 penetrates the middle part of the rectangular slot of the connecting ring 10 and is fixed to the middle surface of the pressing rod 11. By pressing the fixed screw 7 and the pressing rod 11, the pressing rod 11 can drive the clamping block assembly 9 to slide along the slot inner wall of the screw connecting assembly 8 through the pull rope 12.

[0034] In this embodiment, as shown in Figure 4 The end of the clamping block assembly 9 close to the screw connecting assembly 8 is connected to the surface of the screw connecting assembly 8 through a spring. The side surface of the clamping block assembly 9 close to the edge protection plate 2 is inclined. The outer surface of the connecting ring 10 is fixed to the inner wall of the screw connecting assembly 8 through a fixed column. The side surface of the screw connecting assembly 8 close to the end of the fixed screw 7 is slidingly connected to the slot inner wall of the fixed screw 7 through a spring. The end of the pressing rod 11 of the fixed screw 7 is clamped in the slot of the edge protection plate 2 through the clamping block assembly 9, and the end surface of the pressing rod 11 and the surface of the edge protection plate 2 are flush.

[0035] In this embodiment, as shown in Figure 7As shown, the front and rear ends of the fixing component 16 are symmetrically slotted and fixed to the upper inner walls of the rectangular grooves on both sides of the edge protection plate 2 by screws. The inner walls of the fixing component 16 are provided with rectangular through slots at the bottom center on both sides, and the width of the rectangular through slots is equal to the cross-sectional width of the snap-fit ​​plate 19. The end of the sliding ramp block 18 near the snap-fit ​​plate 19 is fixed to the middle of the surface of the snap-fit ​​plate 19 located inside the sandwich protection plate 3, and the other end of the sliding ramp block 18 near the push block 17 is sloping. By slotting the surface of the edge protection plate 2 and fixing the fixing component 16 with screws, the fixing component 16 can be fixed inside the rectangular groove of the edge protection plate 2, and it is convenient to snap the sandwich protection plate 3 in the future.

[0036] In this embodiment, as Figure 7 As shown, the push block 17 is located on the outside of the interlayer protective plate 3, and both its front and rear sides are sloping. The middle of the sliding ramp block 18 is fitted with a spring, and the front and rear ends of the spring are respectively connected to the middle of the end surface of the locking plate 19 and the middle of the side surface of the sliding ramp block 18. The slope of the sliding ramp block 18 near the push block 17 is in close contact with the slope surface of the push block 17 near the sliding ramp block 18. The middle of the push block 17 is slidably connected to the inner wall of the groove of the interlayer protective plate 3. The bottom end of the interlayer protective plate 3 is located at the middle of the front and rear ends of the fixed component 16, and a rectangular groove is provided. By pressing the push block 17, the sliding ramp block 18 can drive the locking plate 19 to slide out of the groove of the interlayer protective plate 3, thereby locking the interlayer protective plate 3 inside the fixed component 16.

[0037] In this embodiment, as Figure 2 and Figure 6 As shown, the surface of the anti-bending crossbar 5 is slidably connected to the inner wall of the through groove of the interlayer protective plate 3 and the fixed connecting rod 4. The part of the anti-bending crossbar 5 near the sliding ring 13 is connected to one side surface of the sliding ring 13 by a spring. The middle part of the anti-bending crossbar 5 is slidably connected to the inner surface of the sliding ring 13. The end of the connecting ramp 14 near the sliding ring 13 is fixed to the middle of the front and rear ends of the sliding ring 13. The side of the connecting ramp 14 near the ramp connecting rod 15 is sloping. The slope surface at the end of the connecting ramp 14 is in close contact with the slope surface of the ramp connecting rod 15 near the connecting ramp 14. By setting the anti-bending crossbar 5 inside the circular through groove of the interlayer protective plate 3 and the fixed connecting rod 4, and by locking the anti-bending crossbar 5 inside the groove of the interlayer protective plate 3 and the fixed connecting rod 4 by the locking cylinder 6, bending of the acrylic plate body 1 and the edge protection plate 2 is prevented.

[0038] In this embodiment, as Figure 6As shown, the other end of the slope connecting rod 15 is fixed to the end of the clamping cylinder 6, and the middle part of the slope connecting rod 15 is sleeved with a spring, and the two ends of the spring are connected to the inner wall of the anti-bending cross rod 5 on the surface of the middle part of the slope connecting rod 15. The total spring force of the middle spring of the slope connecting rod 15 is less than the spring force of the middle spring of the anti-bending cross rod 5; by arranging a spring in the middle of the anti-bending cross rod 5, and the spring force of the spring is greater than the spring force of the middle spring of the slope connecting rod 15, so that the clamping cylinder 6 can be clamped into the slot inside the interlayer protection plate 3 when the middle cylinder of the anti-bending cross rod 5 is not pressed.

[0039] The use method and advantages of the utility model are as follows:

[0040] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , first, the user can clamp and splice the acrylic plate body 1 and the edge protection plate 2, and rotate the fixing screw 7 to clamp into the recess inside the acrylic plate body 1 and the edge protection plate 2, then press the end of the fixing screw 7 and the pressing rod 11, so that the pressing rod 11 pulls the clamping block assembly 9 through the pull rope 12 to make the end of the clamping block assembly 9 close to the connecting ring 10, and retract into the inside of the screw connecting assembly 8, so that the fixing screw 7 and the end of the pressing rod 11 are retracted into the slot inside the edge protection plate 2, and the clamping block assembly 9 can be clamped into the recess inside the slot wall of the edge protection plate 2, so that the end surface of the pressing rod 11 and the fixing screw 7 is flush with the surface of the edge protection plate 2, thereby facilitating subsequent installation and splicing;

[0041] Then the user can fix the assembly 16 by screwing it into the rectangular slot inside the edge protection plate 2, and aligning the protrusion at the bottom end of the interlayer protection plate 3 with the rectangular slot in the middle of the fixing assembly 16, then inserting the fixed connecting rod 4 between the two interlayer protection plates 3, and the fixed connecting rod 4 presses the pressing block 17, so that the other end of the pressing block 17 presses the sliding slope block 18 on the front and rear sides, and the clamping plate 19 is clamped into the rectangular slot inside the fixing assembly 16 through the sliding slope block 18, so that the interlayer protection plate 3 and the fixed connecting rod 4 can be fixed in the middle of the edge protection plate 2;

[0042] Finally, the anti-bending crossbar 5 is inserted into the circular through slot in the middle of the sandwich protection plate 3 and the fixed connecting rod 4, and at the same time, the middle of the anti-bending crossbar 5 is pulled, so that the front and rear clamping cylinders 6 are retracted into the anti-bending crossbar 5 by the traction force of the spring. When the anti-bending crossbar 5 is fully inserted, the circular rod is released, so that the spring in the middle of the circular rod can pop the sliding ring 13 back to the original position, and the sliding ring 13 is extruded by the connecting slope 14 at both ends of the sliding ring 13, so that the clamping cylinder 6 is clamped into the groove in the sandwich protection plate 3, and the anti-bending crossbar 5 is locked in the circular through slot of the sandwich protection plate 3.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An acrylic sheet with bending resistance, comprising an acrylic sheet body (1), characterized in that: The acrylic sheet body (1) is divided into upper and lower parts, and two edge protection plates (2) are provided on the upper and lower sides of the middle part of the acrylic sheet body (1) near the side surface of the acrylic sheet body (1). A set of regular hexagonal through grooves are equally spaced on the side surface of the edge protection plate (2) and the side surface of the acrylic sheet body (1). A set of sandwich protection plates (3) is provided on the side surface of the edge protection plate (2) near the other edge protection plate (2). A fixed connecting rod (4) is provided in the middle gap of the sandwich protection plate (3). The through slot of the edge protection plate (2) is provided with a fixing screw (7), and the middle of the fixing screw (7) is provided with a screw connection assembly (8). The screw connection assembly (8) is provided with a set of locking block assembly (9) on the side near the middle of the edge protection plate (2). The locking block assembly (9) is provided with a pull rope (12) at the end near the center of the cross section of the fixing screw (7). The other end of the pull rope (12) is provided with a push rod (11), and a connecting ring (10) is sleeved in the middle of the push rod (11). The left and right sides of the interlayer protective plate (3) and the fixed connecting rod (4) are provided with a row of circular through slots at equal intervals, and anti-bending crossbars (5) are provided inside the through slots. A set of circular through slots are provided at equal intervals in the middle of the front and rear sides of the anti-bending crossbars (5), and locking cylinders (6) are provided inside the circular through slots. Each of the locking cylinders (6) is provided with a ramp connecting rod (15) at one end inside the anti-bending crossbar (5), and the left side of the ramp connecting rod (15) near the central axis of the anti-bending crossbar (5) is sloping. The ramp surface of the ramp connecting rod (15) is closely attached to the connecting ramp (14), and a set of sliding rings (13) are evenly spaced in the middle of the anti-bending crossbar (5). The edge protection plate (2) has a set of rectangular grooves evenly spaced in the middle of the side surface near the interlayer protection plate (3), and each groove is provided with a fixing component (16). Each fixing component (16) has a rectangular groove in the middle of the side surface near the interlayer protection plate (3), and each rectangular groove is provided with a set of sliding ramp blocks (18). Each sliding ramp block (18) is provided with a locking plate (19) at one end near the inner wall of the front and rear sides of the fixing component (16), and each sliding ramp block (18) is provided with a pressing block (17) at one end near the middle of the interlayer protection plate (3).

2. The acrylic sheet with bending resistance according to claim 1, characterized in that: The length of the fixing screw (7) is greater than the sum of the depths of the through grooves on the side surfaces of the acrylic plate body (1) and the edge protection plate (2), and the thread length of the fixing screw (7) near the edge protection plate (2) is equal to the groove depth of the acrylic plate body (1). The side surface of the push rod (11) is slidably connected to the groove in the middle of the fixing screw (7), and the middle part of the push rod (11) is slidably connected to the inner surface of the connecting ring (10). The outer surface of the connecting ring (10) is provided with four rectangular through grooves at equal intervals. The end of the pull rope (12) near the push rod (11) passes through the middle of the rectangular groove of the connecting ring (10) and is fixed to the middle surface of the push rod (11).

3. The acrylic sheet with bending resistance according to claim 1, characterized in that: The end of each snap-fit ​​assembly (9) near the screw connection assembly (8) is connected to the surface of the screw connection assembly (8) by a spring. The side surface of the snap-fit ​​assembly (9) near the edge protection plate (2) is sloped. The outer ring surface of the connecting ring (10) is fixed to the inner wall of the screw connection assembly (8) by a fixing post. The side surface of the screw connection assembly (8) near the end of the fixing screw (7) is slidably connected to the inner wall of the groove of the fixing screw (7) by a spring.

4. An acrylic sheet with bending resistance according to claim 1, characterized in that: The front and rear ends of the fixing component (16) are symmetrically slotted and fixed to the inner wall of the upper end of the rectangular groove on both sides of the edge protection plate (2) by screws. The inner wall of the fixing component (16) is provided with a rectangular through groove at the middle of the bottom end on both sides. The width of the rectangular through groove is equal to the cross-sectional width of the locking plate (19). The end of the sliding ramp block (18) near the locking plate (19) is fixed to the middle of the surface of the locking plate (19) located inside the interlayer protection plate (3). The other end of the sliding ramp block (18) near the push block (17) is sloping.

5. An acrylic sheet with bending resistance according to claim 1, characterized in that: The push block (17) is located outside the interlayer protection plate (3) and has sloping sides at both ends. The sliding ramp block (18) is fitted with a spring in the middle. The front and rear ends of the spring are respectively connected to the middle of the end surface of the locking plate (19) and the middle of the side surface of the sliding ramp block (18). The ramp of the sliding ramp block (18) near the push block (17) is closely attached to the ramp surface of the push block (17) near the sliding ramp block (18). The middle of the push block (17) is slidably connected to the inner wall of the groove of the interlayer protection plate (3). The bottom end of the interlayer protection plate (3) is located at the middle of the front and rear ends of the fixed component (16). Rectangular grooves are provided at the middle of both ends.

6. An acrylic sheet with bending resistance according to claim 1, characterized in that: The surface of the anti-bending crossbar (5) is slidably connected to the inner wall of the through groove of the sandwich protective plate (3) and the fixed connecting rod (4). The part of the anti-bending crossbar (5) near the sliding ring (13) is connected to one side surface of the sliding ring (13) by a spring. The middle part of the anti-bending crossbar (5) is slidably connected to the inner surface of the sliding ring (13). The end of the connecting ramp (14) near the sliding ring (13) is fixed to the middle of the front and rear ends of the sliding ring (13). The side of the connecting ramp (14) near the ramp connecting rod (15) is sloping. The slope surface at the end of the connecting ramp (14) is in close contact with the slope surface of the ramp connecting rod (15) near the connecting ramp (14).

7. An acrylic sheet with bending resistance according to claim 1, characterized in that: The other end of each ramp connecting rod (15) is fixed to the end of the locking cylinder (6), and each ramp connecting rod (15) is fitted with a spring in the middle, and the two ends of the spring are respectively connected to the middle surface of the ramp connecting rod (15) and the inner wall of the anti-bending crossbar (5). The sum of the elastic forces of the springs in the middle of the ramp connecting rod (15) is less than the elastic force of the springs in the middle of the anti-bending crossbar (5).

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