A modular decorative wall panel assembly

Abstract

The present invention provides a modular decorative wall panel assembly, comprising a plurality of base plates, a plurality of decorative plates, a connecting structure, a resisting structure, a bearing structure, a clamping structure, a shielding structure and a locking structure. The decorative plates can be quickly installed through the cooperation of the connecting structure, the resisting structure, the bearing structure and the clamping structure, thereby avoiding the need to use glue. When a certain decorative plate is damaged, it can be disassembled, thereby avoiding damage to other decorative plates and wall surfaces during disassembly, and facilitating subsequent inspection and maintenance. The clamping structure and the base plate can be shielded by the shielding structure, thereby avoiding exposure of the clamping structure and the base plate, thereby improving aesthetics. The clamping structure can prevent the shielding structure from falling off the base plate, thereby improving stability. The base plate can be installed through a plurality of mounting holes.

Description

Technical Field

[0001] The invention belongs to the technical field of decorative wall panels, in particular to a modular decorative wall panel assembly. Background Art

[0002] In the process of wall decoration, decorative wall panels are mostly installed on the walls to increase the beauty of the interior. Decorative wall panels are a kind of man-made board. They are thermosetting laminated plastics supported by high-temperature and high-pressure adhesives. The board surface has various wood grains or patterns. It is not only beautiful, but also has high wear resistance, heat resistance, cold resistance and other functions. The walls and roofs of many high-end houses are decorated with this kind of decorative panels.

[0003] However, most traditional decorative wall panels are directly installed on the wall by applying adhesive. Since the adhesive has a certain irritating odor, this odor will produce a pungent feeling and affect people's health. In addition, the wall panels installed with adhesive are not easy to remove. Therefore, when a certain wall panel is damaged, it is easy to cause damage to the wall and surrounding wall panels during the process of removing the wall panel, which is not convenient for subsequent adjustment and maintenance. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a modular decorative wall panel assembly.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A modular decorative wall panel assembly comprises a plurality of base plates, wherein two adjacent base plates are in conflict with each other, a connecting structure is provided on the base plates, a blocking structure is provided on a base plate located at one end of the plurality of base plates, a tightening structure is provided on a base plate located at the other end of the plurality of base plates, a shielding structure is provided on the two base plates located at both ends of the plurality of base plates, a positioning structure is provided on the shielding structure, a plurality of bearing structures are provided on the base plates, a plurality of mounting holes are provided on the base plates, a plurality of decorative panels are in conflict with each other on one side of the plurality of base plates, and two adjacent decorative panels are in conflict with each other.

[0007] Specifically, the connection structure includes a first groove, the first groove is provided on the base plate, a connection strip is engaged inside the first groove, a baffle is provided inside the first groove, one side of the baffle is in contact with the connection strip, and the other side of the baffle is in contact with the base plate, and one end of the connection strip is engaged between two decorative panels.

[0008] Specifically, one end of the cross section of the connection strip is L-shaped, the other end of the cross section of the connection strip is T-shaped, the cross section of the first groove is L-shaped, and the length of the first groove is less than the length of the bottom plate.

[0009] Specifically, the blocking structure includes a second groove. A second groove is provided on a bottom plate at one end of the multiple bottom plates. A baffle is engaged inside the second groove. One end of the baffle is engaged with one of the decorative plates.

[0010] Specifically, the cross section of the baffle is a U-shaped structure, and the end of the cross section of the baffle is a trapezoidal structure.

[0011] Specifically, the bearing structure includes a third groove, a plurality of third grooves are provided on the bottom plate, a bearing plate is clamped on the third groove, the bearing plate is clamped with the decorative plate, and the cross section of the bearing plate is an L-shaped structure.

[0012] Specifically, a clamping structure is provided on a base plate located at one end of the multiple base plates, and the clamping structure includes a fifth groove. A fifth groove is provided on a base plate located at one end of the multiple base plates, and a connecting block is engaged inside the fifth groove. A screw rod is threadedly connected to the connecting block, and a slider is threadedly connected to the screw rod. The slider is slidably connected to the connecting block, and a clamping plate is fixedly connected to the slider, and the clamping plate is engaged with the decorative panel.

[0013] Specifically, the shielding structure includes a fourth groove. Two fourth grooves are provided on two base plates at both ends of the multiple base plates. A stopper is engaged inside the fourth groove. The stopper is in conflict with the decorative plate, and the length of the stopper is equal to the length of the decorative plate.

[0014] Specifically, the locking structure includes a slide groove, the block is provided with a slide groove, the slide groove is slidably fitted with a resist block inside, the resist block is fixedly connected with a first magnet inside, the block is slidably connected with a clamping block, the clamping block is engaged with the slot, the slot is provided on the block, the clamping block and the block are both fixedly connected with a second magnet, and a reset spring is provided between the resist block and the block.

[0015] Specifically, the magnetic poles of the two second magnets on the opposite sides are opposite, one end of the cross section of the stop block is in a trapezoidal structure, and the end of the cross section of the clamping block is in a trapezoidal structure.

[0016] The beneficial effects of the present invention are:

[0017] (1) The modular decorative wall panel assembly described in the present invention, when installing the decorative panels, firstly, multiple base panels are installed and fixed through multiple installation holes and expansion bolts. After the multiple base panels are installed and fixed, firstly, one of the decorative panels is inserted into the multiple bearing structures, and is abutted against the resisting structures. At this time, the decorative panels can be supported by the multiple bearing structures, effectively preventing them from falling under the action of gravity. After one decorative panel is installed, it is fixed by a connecting structure, and another decorative panel is engaged with the connecting structure. The above operation is repeated until the last decorative panel is installed. At this time, the last decorative panel is tightened by the tightening structure, thereby completing the installation of multiple decorative panels, thereby avoiding the use of adhesive during the installation process, and avoiding the irritating odor generated by the adhesive to cause harm to the human body. In addition, when a decorative panel is damaged, the multiple decorative panels can be quickly disassembled and the damaged decorative panel can be replaced, thereby facilitating the adjustment and maintenance of the decorative panels.

[0018] (2) The modular decorative wall panel assembly described in the present invention first installs and fixes multiple base panels through multiple installation holes and expansion bolts. When the base panels are installed, the load-bearing plate is inserted into the third groove, and the two load-bearing plates are inserted into one of the decorative panels. The decorative panel can be supported by the load-bearing plate, thereby effectively preventing the decorative panel from falling under the action of gravity. When the load-bearing plate is fully inserted into the decorative panel, the decorative panel is pushed to make the decorative panel and the baffle plate contact each other. Since the cross-section of the baffle plate is a U-shaped structure, the decorative panel and the base panel can fit together. At this time, the installation of the first decorative panel is completed. Then, a connecting strip is inserted into the first groove, and the baffle plate is placed in the first groove. The baffle plate can resist the connecting strip, thereby effectively preventing the connecting strip from sliding in the first groove. Then, the other decorative panel is installed. One end of the decorative panel is engaged with the connecting strip, and the decorative panel can resist the blocking strip, thereby preventing the blocking strip from falling from the first groove, thereby completing the connection between the two decorative panels, and repeating the above operations in sequence to connect multiple decorative panels to each other. When the last decorative panel is installed, the screw rod is rotated by a wrench, and the screw rod thread drives the slider to slide on the connecting block, and the slider drives the push plate to move toward the decorative panel. When the push plate and the decorative panel are tightly pressed, the wrench is stopped. At this time, the installation of multiple decorative panels is achieved, thereby avoiding the use of adhesive during the installation process, and avoiding the irritating smell of the adhesive to cause harm to the human body. When a decorative panel is damaged, the screw rod can be rotated in the opposite direction to realize the disassembly of multiple decorative panels, thereby replacing the damaged decorative panel, which is convenient for adjustment and maintenance of the decorative panel.

[0019] (2) A modular decorative wall panel assembly described in the present invention can shield the connection block and the bottom plate through the shielding structure after the decorative panel is installed, thereby improving the aesthetics, and can fix the shielding structure through the locking structure, thereby preventing the shielding structure from falling off the bottom plate, thereby improving the stability. That is, after the decorative panel is installed, the connection block and the bottom plate can be blocked by the blocking block, thereby preventing the connection block and the bottom plate from being exposed, thereby improving the aesthetics, and the engagement between the blocking block and the slot can prevent the block from falling off the bottom plate, thereby improving the stability, and when the block needs to be removed, the hand-held magnet is moved to one side of the first magnet, at this time, under the action of the magnetic force, the blocking block will move away from the blocking block and the sliding return spring will shrink, and at this time, under the action of the second magnet, the blocking block will move away from the slot, and when both the blocking blocks are not engaged with the slot, the blocking block can be removed from the bottom plate, and after the blocking block is removed, it will not block the connection block, thereby facilitating the subsequent removal of the decorative panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a modular decorative wall panel assembly provided by the present invention;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0023] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B is shown;

[0024] Figure 4 It is a schematic diagram of the connection structure between the load-bearing plate and the bottom plate of the present invention;

[0025] Figure 5 for Figure 4 An enlarged schematic diagram of the C-section structure is shown;

[0026] Figure 6 for Figure 5 An enlarged schematic diagram of the D-section structure is shown;

[0027] Figure 7 It is a schematic diagram of the connection structure between the slider and the abutment plate of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure between the sliding sleeve and the cross bar of the present invention;

[0029] Fig. 9 for Figure 8 An enlarged schematic diagram of the structure of part E is shown;

[0030] Fig.10 It is a structural schematic diagram of the stopper of the present invention;

[0031] Fig.11 It is a structural schematic diagram of the carrying plate of the present invention.

[0032] In the figure: 1. bottom plate; 2. decorative plate; 3. connecting structure; 301. connecting strip; 302. blocking strip; 303. first groove; 4. resisting structure; 401. baffle plate; 402. second groove; 5. mounting hole; 6. bearing structure; 601. bearing plate; 602. third groove; 7. shielding structure; 701. block; 702. fourth groove; 8. positioning structure; 801. resisting block; 802. first magnet; 803. blocking block; 804. second magnet; 805. reset spring; 806. slide groove; 807. clamping groove; 9. tightening structure; 901. connecting block; 902. screw rod; 903. slider; 904. resisting plate; 905. fifth groove. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1-11 As shown, an embodiment of the present invention provides a modular decorative wall panel assembly including a support frame 1, including multiple base plates 1, two adjacent base plates 1 are in conflict with each other, a connecting structure 3 is provided on the base plate 1, a base plate 1 located at one end of the multiple base plates 1 is provided with a blocking structure 4, a base plate 1 located at the other end of the multiple base plates 1 is provided with a tightening structure 9, two base plates 1 located at both ends of the multiple base plates 1 are provided with a shielding structure 7, a locking structure 8 is provided on the shielding structure 7, multiple bearing structures 6 are provided on the base plate 1, multiple mounting holes 5 are provided on the base plate 1, multiple decorative panels 2 are in conflict with each other on one side of the multiple base plates 1, and two adjacent decorative panels 2 are in conflict with each other.

[0035] like Figure 1-11 As shown, the connection structure 3 includes a first groove 303, the bottom plate 1 is provided with the first groove 303, the inside of the first groove 303 is engaged with a connection bar 301, the inside of the first groove 303 is provided with a stop bar 302, one side of the stop bar 302 abuts against the connection bar 301, the other side of the stop bar 302 abuts against the bottom plate 1, and one end of the connection bar 301 is engaged with the two decorative plates 2. One end of the cross section of the connection bar 301 is an L-shaped structure, the other end of the cross section of the connection bar 301 is a T-shaped structure, the cross section of the first groove 303 is an L-shaped structure, and the length of the first groove 303 is less than the length of the bottom plate 1.

[0036] like Figure 1-11As shown, the blocking structure 4 includes a second groove 402, and a bottom plate 1 located at one end of the bottom plates 1 is provided with the second groove 402, and a baffle 401 is engaged inside the second groove 402, and one end of the baffle 401 is engaged with one of the decorative plates 2. The cross section of the baffle 401 is a U-shaped structure, and the end of the cross section of the baffle 401 is a trapezoidal structure.

[0037] like Figure 1-11 As shown, the bearing structure 6 includes a third groove 602 . A plurality of third grooves 602 are provided on the bottom plate 1 . A bearing plate 601 is clamped on the third groove 602 . The bearing plate 601 is clamped with the decorative plate 2 . The cross section of the bearing plate 601 is an L-shaped structure.

[0038] In this embodiment, firstly, multiple base plates 1 are installed and fixed through multiple installation holes 5 in conjunction with expansion bolts. When the base plate 1 is installed, the bearing plate 601 is inserted into the third groove 602, and two bearing plates 601 are inserted into one of the decorative plates 2. The decorative plate 2 can be carried by the bearing plate 601, thereby effectively preventing the decorative plate 2 from falling under the action of gravity. When the bearing plate 601 is fully inserted into the decorative plate 2, the decorative plate 2 is pushed to make the decorative plate 2 collide with the baffle 401. Since the cross-section of the baffle 401 is a U-shaped structure, the decorative plate 2 can fit with the base plate 1. At this time After the installation of the first decorative panel 2 is completed, a connecting strip 301 is then inserted into the first groove 303, and the blocking strip 302 is placed into the first groove 303. The blocking strip 302 can block the connecting strip 301, thereby effectively preventing the connecting strip 301 from sliding in the first groove 303. Then, one end of another decorative panel 2 is engaged with the connecting strip 301, and the decorative panel 2 can block the blocking strip 302, thereby preventing the blocking strip 302 from falling from the first groove 303, thereby completing the connection between the two decorative panels 2. Repeat the above operations in sequence to connect multiple decorative panels 2 to each other.

[0039] like Figure 1-11As shown, a clamping structure 9 is provided on one of the base plates 1 located at one end of the multiple base plates 1, and the clamping structure 9 includes a fifth groove 905. A fifth groove 905 is provided on one of the base plates 1 located at one end of the multiple base plates 1, and a connecting block 901 is engaged inside the fifth groove 905. A screw rod 902 is threadedly connected to the connecting block 901, and a slider 903 is threadedly connected to the screw rod 902. The slider 903 is slidably connected to the connecting block 901, and a clamping plate 904 is fixedly connected to the slider 903, and the clamping plate 904 is engaged with the decorative panel 2. In this embodiment, when the last decorative panel 2 is installed, the screw rod 902 is rotated by a wrench, and the screw rod 902 thread drives the slider 903 to slide on the connecting block 901, and the slider 903 drives the abutment plate 904 to move toward the decorative panel 2. When the abutment plate 904 is tightly pressed against the decorative panel 2, the rotation of the wrench is stopped. At this time, the installation of multiple decorative panels 2 is achieved, thereby avoiding the use of glue during the installation process and avoiding the irritating smell of the glue to cause harm to the human body. In addition, when one decorative panel 2 is damaged, the screw rod 902 can be rotated in the opposite direction to achieve the disassembly of multiple decorative panels 2, so as to replace the damaged decorative panel 2, thereby facilitating the adjustment and maintenance of the decorative panel 2.

[0040] like Figure 1-11 As shown, the shielding structure 7 includes a fourth groove 702, and two fourth grooves 702 are provided on two bottom plates 1 at both ends of the plurality of bottom plates 1, and a stopper 701 is engaged inside the fourth groove 702, and the stopper 701 is in conflict with the decorative plate 2, and the length of the stopper 701 is equal to the length of the decorative plate 2. In this embodiment, the positioning structure 8 includes a slide groove 806, and the stopper 701 is provided with the slide groove 806, and the slide groove 806 is slidably matched with the stopper 801 inside. The stopper 801 is fixedly connected with a first magnet 802 inside, and a clamping block 803 is slidably connected to the stopper 701, and the clamping block 803 is engaged with a clamping groove 807, and the clamping groove 807 is provided on the stopper 701, and the clamping block 803 and the stopper 701 are both fixedly connected with a second magnet 804. A return spring 805 abuts against the stopper 801 and the stopper 701 . The two second magnets 804 have opposite magnetic poles on opposite sides. One end of the cross section of the stopper 801 is a trapezoidal structure, and the end of the cross section of the clamping block 803 is a trapezoidal structure.

[0041] When the decorative panel 2 is installed, the stopper 701 can be used to block the connecting block 901 and the bottom plate 1, thereby preventing the connecting block 901 and the bottom plate 1 from being exposed, thereby improving the aesthetics. The engagement between the blocking block 803 and the slot 807 can prevent the block 701 from falling off the bottom plate 1, thereby improving stability. When the block 701 needs to be removed, the hand-held magnet is moved to the side of the first magnet 802. At this time, under the action of the magnetic force, the blocking block 801 will move away from the blocking block 803 and the sliding return spring 805 will shrink. At this time, under the action of the second magnet 804, the blocking block 803 will move away from the slot 807. When both blocking blocks 803 are not engaged with the slot 807, the block 701 can be removed from the bottom plate 1. After the block 701 is removed, it will not block the connecting block 901, thereby facilitating the subsequent removal of the decorative panel 2.

[0042] When the present invention is used, firstly, multiple base plates 1 are installed and fixed through multiple installation holes 5 in combination with expansion bolts. When the base plate 1 is installed, the bearing plate 601 is inserted into the third groove 602, and two bearing plates 601 are inserted into one of the decorative plates 2. The decorative plate 2 can be carried by the bearing plate 601, thereby effectively preventing the decorative plate 2 from falling under the action of gravity. When the bearing plate 601 is fully inserted into the decorative plate 2, the decorative plate 2 is pushed to make the decorative plate 2 collide with the baffle 401. Since the cross-section of the baffle 401 is a U-shaped structure, the decorative plate 2 can fit with the base plate 1. At this time, the installation of the first decorative plate 2 is completed, and then a connecting strip 3 is inserted. 01 is inserted into the first groove 303, and the blocking bar 302 is placed into the first groove 303, and the blocking bar 302 can resist the connecting bar 301, effectively preventing the connecting bar 301 from sliding in the first groove 303, and then one end of another decorative panel 2 is engaged with the connecting bar 301, and the decorative panel 2 can resist the blocking bar 302, thereby preventing the blocking bar 302 from falling from the first groove 303, thereby completing the connection between the two decorative panels 2, and repeating the above operations in sequence to connect multiple decorative panels 2 to each other. When the last decorative panel 2 is installed, the screw rod 902 is rotated by a wrench, and the screw rod 902 thread drives the slider 903 to the connecting block 901 slides up, and the slider 903 drives the plate 904 to move toward the decorative panel 2. When the plate 904 is pressed against the decorative panel 2, the wrench is stopped. At this time, the installation of multiple decorative panels 2 is achieved, thereby avoiding the use of adhesive during the installation process, and avoiding the irritating smell of the adhesive to cause harm to the human body. When a decorative panel 2 is damaged, the screw rod 902 can be rotated in the opposite direction to realize the disassembly of multiple decorative panels 2, so that the damaged decorative panel 2 can be replaced, which is convenient for the adjustment and maintenance of the decorative panel 2. When the decorative panel 2 is installed, the connecting block 901 and the bottom plate 1 can be blocked by the stopper 701, thereby avoiding the connection block 901 and the bottom plate 1 from being exposed. Thereby, the aesthetics is improved, and the engagement between the block 803 and the slot 807 can prevent the block 701 from falling off the base plate 1, thereby improving stability. When the block 701 needs to be disassembled, the hand-held magnet is moved to the side of the first magnet 802. At this time, under the action of the magnetic force, the block 801 will move away from the block 803 and the sliding return spring 805 will contract. At this time, under the action of the second magnet 804, the block 803 will move away from the slot 807. When both blocks 803 are not engaged with the slot 807, the block 701 can be removed from the base plate 1. After the block 701 is removed, it will not resist the connecting block 901, thereby facilitating the subsequent removal of the decorative panel 2.

[0043] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A modular decorative wall panel assembly, characterized in that: The invention comprises a plurality of bottom plates (1), wherein two adjacent bottom plates (1) are in contact with each other, a connection structure is provided on the bottom plates (1), a bottom plate (1) located at one end of the plurality of bottom plates (1) is provided with a blocking structure (4), a bottom plate (1) located at the other end of the plurality of bottom plates (1) is provided with a tightening structure (9), two bottom plates (1) located at both ends of the plurality of bottom plates (1) are provided with a shielding structure (7), a blocking structure (8) is provided on the shielding structure (7), a plurality of bearing structures (6) are provided on the bottom plates (1), a plurality of mounting holes (5) are provided on the bottom plates (1), a plurality of decorative plates (2) are in contact with one side of the plurality of bottom plates (1), and two adjacent decorative plates (2) are in contact with each other; The connection structure (3) comprises a first groove (303), the base plate (1) is provided with the first groove (303), a connection strip (301) is engaged inside the first groove (303), a stop strip (302) is disposed inside the first groove (303), one side of the stop strip (302) abuts against the connection strip (301), the other side of the stop strip (302) abuts against the base plate (1), one end of the connection strip (301) is engaged with the two decorative plates (2), one end of the cross section of the connection strip (301) is an L-shaped structure, the other end of the cross section of the connection strip (301) is a T-shaped structure, the cross section of the first groove (303) is an L-shaped structure, and the length of the first groove (303) is less than the length of the base plate (1); The blocking structure (4) comprises a second groove (402), a bottom plate (1) located at one end of the plurality of bottom plates (1) is provided with the second groove (402), a baffle (401) is engaged inside the second groove (402), one end of the baffle (401) is engaged with one of the decorative plates (2), the cross section of the baffle (401) is a U-shaped structure, and the end of the cross section of the baffle (401) is a trapezoidal structure; The bearing structure (6) comprises a third groove (602), a plurality of third grooves (602) are provided on the bottom plate (1), a bearing plate (601) is clamped on the third groove (602), the bearing plate (601) is clamped with the decorative plate (2), and the cross section of the bearing plate (601) is an L-shaped structure; A tightening structure (9) is provided on a bottom plate (1) located at one end of the plurality of bottom plates (1), the tightening structure (9) comprising a fifth groove (905), a bottom plate (1) located at one end of the plurality of bottom plates (1) is provided with a fifth groove (905), a connecting block (901) is engaged inside the fifth groove (905), a screw rod (902) is threadedly connected to the connecting block (901), a slider (903) is threadedly connected to the screw rod (902), the slider (903) is slidably connected to the connecting block (901), a tightening plate (904) is fixedly connected to the slider (903), and the tightening plate (904) is engaged with the decorative plate (2).

2. A modular decorative wall panel assembly according to claim 1, characterized in that: The shielding structure (7) comprises a fourth groove (702), two fourth grooves (702) are provided on two base plates (1) located at both ends of the plurality of base plates (1), a stopper (701) is engaged inside the fourth groove (702), the stopper (701) is in contact with the decorative plate (2), and the length of the stopper (701) is equal to the length of the decorative plate (2).

3. A modular decorative wall panel assembly according to claim 2, characterized in that: The locking structure (8) comprises a slide groove (806), the block (701) is provided with a slide groove (806), the slide groove (806) is internally slidably matched with a stop block (801), the stop block (801) is internally fixedly connected with a first magnet (802), the stop block (701) is slidably connected with a clamping block (803), the clamping block (803) is engaged with a clamping groove (807), the clamping groove (807) is provided on the block (701), the clamping block (803) and the block (701) are both fixedly connected with a second magnet (804), and a reset spring (805) is provided between the stop block (801) and the block (701) to abut against each other.

4. A modular decorative wall panel assembly according to claim 3, characterized in that: The magnetic poles of the two second magnets (804) on the opposite sides are opposite, one end of the cross section of the stop block (801) is in a trapezoidal structure, and the end of the cross section of the clamping block (803) is in a trapezoidal structure.

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