Number plate device

Abstract

An embodiment of the present invention provides a number plate device, comprising a shell, a plurality of number plates, a push assembly and a plurality of movable card blocks. The shell has an installation cavity. The plurality of number plates are movably installed in the installation cavity along the length direction of the shell, and each number plate has a first position and a second position. The number plate in the first position is located in the installation cavity, and the number plate in the second position protrudes from the shell. The push assembly is movably installed in the shell along the length direction of the shell, and the push assembly pushes the plurality of number plates in sequence during the movement, and provides a force for each number plate to move from the first position to the second position. The plurality of movable card blocks are respectively engaged with the plurality of number plates in the second position. The number plate device provided by the present invention pushes the plurality of number plates in sequence during the movement by the push assembly, so that each number plate moves to the second position and is respectively connected to the plurality of movable card blocks, thereby realizing the ejection of the plurality of number plates one by one.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accessories, and in particular to a number plate device. Background Art

[0002] A temporary parking number plate is a plate used to display a contact phone number when temporarily parking. It is usually placed inside the car near the front windshield to make it easier for others to contact the owner.

[0003] The mobile phone number on the existing temporary parking number plate is fixed, and the user cannot control the display of the mobile phone number on the number plate, which is not interesting enough. Therefore, it is necessary to improve the existing temporary parking number plate. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a number plate device to solve the above problem. The embodiment of the present invention achieves the above purpose through the following technical solutions.

[0005] An embodiment of the present invention provides a number plate device, comprising a shell, a plurality of number plates, a push assembly and a plurality of movable clamping blocks. The shell has an installation cavity. The plurality of number plates are movably installed in the installation cavity along the length direction of the shell, and each number plate has a first position and a second position. The number plate in the first position is located in the installation cavity, and the number plate in the second position protrudes from the shell. The push assembly is movably installed in the shell along the length direction of the shell, and the push assembly pushes the plurality of number plates in turn during the movement, and provides a force for each number plate to move from the first position to the second position. The plurality of movable clamping blocks are respectively engaged with the plurality of number plates in the second position.

[0006] In one embodiment, the push assembly includes an operating member and a push member. The operating member is connected to the push member and is movably arranged in the shell along the length direction of the shell. The push member is located in the installation cavity. During the movement of the operating member, the push member pushes multiple number plates in turn and provides a force for each number plate to move from a first position to a second position.

[0007] In one embodiment, the push member has a first push inclined surface, each number plate includes a first contact arc surface, and during the movement of the push assembly, a plurality of first contact arc surfaces sequentially contact and slide over the first push inclined surface.

[0008] In one embodiment, the push member also has a second push inclined surface, which is opposite to the first push inclined surface. Each number plate also includes a second contact arc surface, which is connected to the first contact arc surface. During the movement of the push assembly, multiple second contact arc surfaces sequentially contact and slide over the second push inclined surface.

[0009] In one embodiment, the shell is provided with a slide groove, the extension direction of the slide groove is consistent with the length direction of the shell, and the operating member can be slidably inserted into the slide groove and exposed outside the shell.

[0010] In one embodiment, the number plate device also includes a back plate, which is installed in the shell, and a plurality of movable card blocks are telescopically installed on the back plate. The plurality of movable card blocks correspond one-to-one to the plurality of number plates, and each number plate has a card slot. The card slot of the number plate in the second position engages with the corresponding movable card block.

[0011] In one embodiment, the number plate device also includes a card block control rod, the length direction of the card block control rod is consistent with the length direction of the shell, the card block control rod is telescopically installed on the back plate, the telescopic direction of the card block control rod is consistent with the telescopic direction of the movable card block, and the card block control rod is offset against multiple movable card blocks.

[0012] In one embodiment, the number plate device also includes a pull rod, which is connected to the card block control rod. The pull rod includes a rod body and a stopper. The rod body passes through the stopper, and the stopper selectively resists or separates from the back plate during the pulling of the pull rod.

[0013] In one embodiment, the rod body includes a first connecting rod, a second connecting rod and a third connecting rod, the third connecting rod is connected between the first connecting rod and the second connecting rod, the stop portion includes a first stop portion and a second stop portion, the first connecting rod and the third connecting rod are passed through the first stop portion, the second connecting rod and the third connecting rod are passed through the second stop portion, and the first connecting rod and the second connecting rod are respectively connected to the two ends of the length direction of the block control rod.

[0014] In one embodiment, the number plate device further includes a baffle, which is mounted on the back plate and located in the mounting cavity, and the plurality of number plates are located between the housing and the baffle.

[0015] Compared with the prior art, the number plate device provided by the present invention includes a shell, multiple number plates, a push assembly and multiple active card blocks. The multiple number plates are movably installed in the installation cavity of the shell along the length direction of the shell. Each number plate has a first position and a second position. The number plate in the first position is located in the installation cavity, and the number plate in the second position protrudes from the shell. The push assembly is movably installed in the shell along the length direction of the shell. The push assembly pushes the multiple number plates in turn during the movement and provides a force for each number plate to move from the first position to the second position. The multiple active card blocks are respectively engaged with the multiple number plates in the second position. The push assembly pushes the multiple number plates in turn during the movement, so that each number plate is moved to the second position and connected to the multiple active card blocks respectively, thereby realizing the popping out of multiple number plates one by one, and increasing the fun of mobile phone number display.

[0016] These and other aspects of the present invention will become more apparent from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the number plate device provided by an embodiment of the present invention at a viewing angle.

[0019] Figure 2 It is a schematic structural diagram of a housing provided by an embodiment of the present invention.

[0020] Figure 3 It is a schematic structural diagram of a number plate device (excluding the housing) provided in an embodiment of the present invention at a viewing angle.

[0021] Figure 4 It is a structural schematic diagram of a number plate provided in an embodiment of the present invention.

[0022] Figure 5 It is a schematic structural diagram of a number plate device (excluding the housing) provided in an embodiment of the present invention from another viewing angle.

[0023] Figure 6 It is a structural schematic diagram of the number plate device provided by an embodiment of the present invention from another perspective. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the embodiments of the present invention, the embodiments of the present invention will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the embodiments of the present invention herein are only for the purpose of describing specific implementations and are not intended to limit the present invention.

[0026] See also Figure 1 , Figure 2 and Figure 3The embodiment of the present invention provides a number plate device 1, comprising a housing 10, a plurality of number plates 20, a push assembly 30 and a plurality of movable blocks 40. The plurality of number plates 20 are movably mounted in the housing 10 along the length direction of the housing 10; the push assembly 30 is movably mounted in the housing 10 along the length direction of the housing 10, and the push assembly 30 pushes the plurality of number plates 20 in sequence during the movement; and the plurality of movable blocks 40 are mounted in the housing 10 for engaging with the plurality of number plates 20.

[0027] Please continue reading Figure 1 In this embodiment, the shell 10 is a generally hollow rectangular parallelepiped structure with an open top, and the shell 10 includes a first side wall 11, a second side wall 12, a third side wall 13, a fourth side wall 14, and a bottom wall 15. The first side wall 11 is parallel to and opposite to the second side wall 12, the third side wall 13 is parallel to and opposite to the fourth side wall 14, the third side wall 13 (the fourth side wall 14) is connected between the first side wall 11 and the second side wall 12, and the bottom wall 15 is connected between the first side wall 11 and the second side wall 12 (between the third side wall 13 and the fourth side wall 14). The length direction of the first side wall 11 and the second side wall 12 is consistent with the length direction of the shell 10, and the width direction of the first side wall 11 and the second side wall 12 is consistent with the width direction of the shell 10; the length direction of the third side wall 13 and the fourth side wall 14 is consistent with the width direction of the shell 10, and the width direction of the third side wall 13 and the fourth side wall 14 is consistent with the thickness direction of the shell 10.

[0028] The housing 10 has an installation cavity 16, which is formed by the first side wall 11, the second side wall 12, the third side wall 13, the fourth side wall 14 and the bottom wall 15, and can be used to install multiple number plates 20 and multiple movable blocks 40. The housing 10 is provided with a slide 17, which is connected to the installation cavity 16. The extension direction of the slide 17 is consistent with the length direction of the housing 10. The slide 17 can be used for the passage of the push assembly 30, so that the push assembly 30 is partially exposed outside the housing 10, so as to operate the push assembly 30 to push the multiple number plates 20 in the installation cavity 16 in sequence. In this embodiment, the slide 17 is arranged on the side of the second side wall 12 close to the bottom wall 15. In other embodiments, the slide 17 can also be arranged on the side of the first side wall 11 close to the bottom wall 15, or arranged on the bottom wall 15.

[0029] The inner surface of the first side wall 11 is provided with a plurality of partitions 18, and the plurality of partitions 18 are arranged in the installation cavity 16 along the length direction of the shell 10. A number plate 20 can be installed between two adjacent partitions 18. By providing a plurality of partitions 18, the number plate 20 can be prevented from being offset during movement.

[0030] The number plate device 1 further includes a back plate 50, which is a substantially rectangular plate-shaped structure, and the length direction of the back plate 50 is consistent with the length direction of the housing 10. The back plate 50 is installed in the installation cavity 16 of the housing 10, and can be fitted with the inner surface of the second side wall 12. Specifically, the back plate 50 can be fitted with the inner surface of the second side wall 12 by bonding or the like. A plurality of card block mounting columns 52 and two control rod mounting portions 54 are provided on one side of the back plate 50 facing the installation cavity 16. The plurality of card block mounting columns 52 are located between the two control rod mounting portions 54 and are arranged at equal intervals along the length direction. The card block mounting columns 52 can be used to install a plurality of movable card blocks 40.

[0031] Please continue reading Figure 2 , Figure 3 and Figure 4 The number plate device 1 further includes a baffle 60, which is a long strip structure with a substantially U-shaped cross section, and the length extension direction of the baffle 60 is consistent with the length direction of the housing 10. The baffle 60 is installed on the back plate 50 and is located in the installation cavity 16. The baffle 60 is opposite to the plurality of partitions 18 and can contact the number plates 20, that is, the baffle 60 can stop the number plates 20, so that the plurality of number plates 20 are located between the first side wall 11 and the baffle 60, so that when the number plates 20 move from the first position to the second position or from the second position to the first position, they can move along the predetermined direction (the width direction of the housing 10) without lateral displacement along the thickness direction of the housing 10.

[0032] The number plate 20 can be used to set numbers, and multiple number plates 20 are movably mounted in the mounting cavity 16 along the length direction of the housing 10. In this embodiment, the number of number plates 20 is eleven, corresponding to eleven mobile phone numbers. The eleven number plates 20 are arranged along the length direction of the housing 10, and each number plate 20 is movably mounted in the mounting cavity 16, and has a first position and a second position, wherein the number plate 20 in the first position is located in the mounting cavity 16 to hide the number on the number plate 20; the number plate 20 in the second position protrudes from the housing 10 to display the number on the number plate 20.

[0033] The number plate 20 includes a number plate 22 and a snap-fit ​​protrusion 24 . The snap-fit ​​protrusion 24 is connected to one side of the number plate 22 . The number plate 22 is used to set numbers. The snap-fit ​​protrusion 24 is used to snap-fit ​​with the movable card block 40 to fix the number plate 20 .

[0034] The number plate 22 is generally a plate-like structure. Each number plate 22 includes a first surface 221 and a second surface 223. The first surface 221 and the second surface 223 are opposite to each other. The first surface 221 can be used to set numbers. The second surface 223 can be provided with a snap-fitting protrusion 24. The snap-fitting protrusion 24 cooperates with the second surface 223 to form a slot 26. That is, the snap-fitting protrusion 24 protrudes from the second surface 223 to form the slot 26. The slot 26 is used to snap with the movable block 40 to fix the number plate 20 in the second position. Each number plate 22 includes a first contact arc surface 225. The first contact arc surface 225 is provided at the lower end of the number plate 22. The first contact arc surface 225 is connected between the first surface 221 and the second surface 223. The first contact arc surface 225 can be moved during the movement of the push assembly 30 (such as Figure 3 The A1 direction) contacts the push assembly 30 so that the number plate 20 can be moved from the first position to the second position to display the number on the number plate 20. In addition, each number plate 22 also includes a second contact arc surface 227, the second contact arc surface 227 is connected to the first contact arc surface 225, and the second contact arc surface 227 is also connected between the first surface 221 and the second surface 223. Specifically, the first surface 221 and the second surface 223 are symmetrical about the axis of the number plate 20 along the width direction of the shell 10. The second contact arc surface 227 can also be moved during the movement of the push assembly 30 (such as Figure 3 The A2 direction (the A1 direction is opposite to the A2 direction) contacts the push assembly 30 so that the number plate 20 can be moved from the first position to the second position to display the number on the number plate 20.

[0035] The engaging protrusion 24 protrudes from the second surface 223 and is located at the upper end of the number plate 20. The engaging protrusion 24 and the number plate 20 can be integrally formed. The engaging protrusion 24 has a guide sliding inclined surface 241, a connecting surface 243 and an abutting surface 245, wherein the guide sliding inclined surface 241 is connected to the second surface 223, the abutting surface 245 can be perpendicular to the second surface 223, and the connecting surface 243 is connected between the guide sliding inclined surface 241 and the abutting surface 245. In this embodiment, when the number plate 20 moves from the first position to the second position, it first contacts the movable block 40 through the guide slope 241. Through the contact of the slope, the movable block 40 can be pushed to move in the direction close to the second side wall 12, and then contacts the movable block 40 through the connecting surface 243. When the number plate 20 moves to the second position, the movable block 40 engages with the slot 26, that is, the abutting surface 245 abuts against the movable block 40, preventing the number plate 20 from falling due to its own gravity, thereby fixing the number plate 20 and displaying the number on the number plate 20.

[0036] See also Figure 3 and Figure 5During the movement, the pushing component 30 pushes multiple number plates 20 in sequence and provides a force for each number plate 20 to move from the first position to the second position, so that each number plate 20 can be extended out of the shell 10 one by one, thereby displaying the numbers on each number plate 20 one by one, and finally displaying the complete mobile phone number, which increases the interest of the mobile phone number display.

[0037] The push assembly 30 includes an operating member 32 and a push member 34. The operating member 32 is connected to the push member 34 and is movably disposed in the housing 10 along the length direction of the housing 10. The push member 34 is located in the mounting cavity 16, and pushes the plurality of number plates 20 in sequence during the movement of the operating member 32, and provides a force for each number plate 20 to move from the first position to the second position.

[0038] The operating member 32 is slidably disposed in the slide groove 17 and exposed outside the housing 10, that is, protruding from the outer surface of the second side wall 12, so as to facilitate user operation. Specifically, the operating member 32 includes a toggle block 321 and a connecting rod 323, the connecting rod 323 is connected between the toggle block 321 and the push member 34, the toggle block 321 is located outside the housing 10, and the connecting rod 323 passes through the slide groove 17 and is connected to the push member 34, so that the user can control the movement of the push member 34 by operating the toggle block 321.

[0039] The push member 34 is a plate-shaped structure with a cross section of a parabola opening downward. The push member 34 has a first push inclined surface 342. Figure 3 The plurality of first contact arc surfaces 225 (in the A1 direction) sequentially contact and slide over the first push slope 342, so that the number plate 20 can be pushed to the second position along the moving direction of the push member 34. In addition, the push member 34 also has a second push slope 344, which is opposite to the first push slope 342. Figure 3 The plurality of second contact arc surfaces 227 (in the A2 direction) sequentially contact and slide over the second push bevel 344, so that the number plate 20 can be pushed to the second position along the moving direction of the push member 34. In this embodiment, the first push bevel 342 and the second push bevel 344 are symmetrical about the axis of the push member 34 along the width direction of the shell 10. It should be noted that since the first push bevel 342 and the second push bevel 344 can both push the number plate 20 to the second position, under the condition that the number plate 20 is in the first position, the reciprocating movement of the push member 34 can achieve the effect of pushing the plurality of number plates 20 in sequence, and the operation is more convenient.

[0040] See also Figure 3 , Figure 5 and Figure 6, a plurality of movable card blocks 40 are retractably mounted on the back plate 50, and the plurality of movable card blocks 40 correspond to the plurality of number plates 20 one by one, that is, the number of movable card blocks 40 is also eleven. The plurality of movable card blocks 40 can be respectively engaged with the plurality of number plates 20 in the second position, that is, when the mobile phone number on the number plate 20 needs to be displayed, the card slot 26 of the number plate 20 in the second position can be engaged with the corresponding movable card block 40 to fix the number plate 20. When the mobile phone number on the number plate 20 needs to be hidden, the number plate 20 in the second position can be separated from the corresponding movable card block 40, so that the number plate 20 can fall due to its own gravity, that is, it is in the first position.

[0041] The movable block 40 includes a block 41 and an elastic member 43, wherein the expansion and contraction direction of the elastic member 43 is consistent with the thickness direction of the housing 10 (the width direction of the third side wall 13), that is, the expansion and contraction direction of the elastic member 43 is perpendicular to the moving direction of the number plate 20. The elastic member 43 can be installed between the block mounting column 52 and the block 41, so as to provide a force for the extension of the block 41, so that the block 41 can be engaged with the slot 26. In this embodiment, the elastic member 43 can be a compression spring. In other embodiments, the elastic member 43 can also be other structures with elasticity. The card block 41 includes a card engaging portion 412 and an abutment portion 414. In the present embodiment, the card engaging portion 412 is roughly a U-shaped structure. The middle of the card engaging portion 412 can be used to install the elastic member 43, so that the extension and contraction of the elastic member 43 can control the extension or retraction of the card engaging portion 412. The abutment portion 414 protrudes from the card engaging portion 412. By controlling the abutment portion 414 to move in the direction of spring compression, the active card block 40 can be driven to retract, that is, the active card block 40 is separated from the number plate 20, so that the number plate 20 moves from the second position to the first position due to its own gravity, thereby hiding the numbers on the number plate 20.

[0042] The number plate device 1 further includes a card block control rod 70, the length direction of the card block control rod 70 is consistent with the length direction of the housing 10, and the card block control rod 70 is telescopically mounted on the back plate 50. Specifically, both ends of the card block control rod 70 can be mounted in the control rod mounting portion 54 by springs, and the telescopic direction of the card block control rod 70 is consistent with the telescopic direction of the movable card block 40. The card block control rod 70 can be abutted against multiple movable card blocks 40, so that the control rod can simultaneously control the retraction of multiple movable card blocks 40. When multiple number plates 20 are all in the second position, the multiple movable card blocks 40 are simultaneously controlled to retract by operating the control rod, so that the multiple movable card blocks 40 are respectively separated from the corresponding number plates 20, so that the multiple number plates 20 are simultaneously moved from the second position to the first position, achieving the effect of hiding the mobile phone number with one click.

[0043] See also Figure 1 and Figure 5In this embodiment, the number plate device 1 further includes a pull rod 80, which is connected to the card block control rod 70, so that the user can move the card block control rod 70 by pulling the pull rod 80, thereby simultaneously controlling the retraction of multiple active card blocks 40. In other embodiments, the user can also directly drive the card block control rod 70 to move without pulling the pull rod 80.

[0044] In this embodiment, the pull rod 80 includes a rod body 81 and a stop portion 83. The rod body 81 is inserted into the stop portion 83. The stop portion 83 selectively abuts against or separates from the back plate 50 during the pulling of the pull rod 80. The stop portion 83 can control the moving stroke of the block control rod 70 by abutting against the back plate 50, thereby preventing the block control rod 70 from detaching from the control rod mounting portion 54 during the extension process, thereby avoiding affecting the subsequent operation of the control rod to simultaneously control the retraction of multiple active blocks 40.

[0045] The stopper 83 includes a first stopper 831 and a second stopper 832 , wherein the first stopper 831 and the second stopper 832 are spaced apart from each other and are respectively disposed at two ends of the rod body 81 .

[0046] The rod body 81 includes a first connecting rod 811, a second connecting rod 812 and a third connecting rod 813. The third connecting rod 813 is connected between the first connecting rod 811 and the second connecting rod 812. The first connecting rod 811 and the third connecting rod 813 are passed through the first stop portion 831. The second connecting rod 812 and the third connecting rod 813 are passed through the second stop portion 832. The first connecting rod 811 and the second connecting rod 812 are respectively connected to the two ends of the length direction of the block control rod 70, so that the force on the block control rod 70 can be more uniform, avoiding the phenomenon that all movable blocks 40 cannot be retracted due to tilting when the block control rod 70 is pulled.

[0047] In summary, the number plate device 1 provided by the present invention includes a shell 10, multiple number plates 20, a push assembly 30 and multiple active blocks 40. The multiple number plates 20 are movably installed in the installation cavity 16 of the shell 10 along the length direction of the shell 10. Each number plate 20 has a first position and a second position. The number plate 20 in the first position is located in the installation cavity 16, and the number plate 20 in the second position protrudes from the shell 10. The push assembly 30 is movably installed in the shell 10 along the length direction of the shell 10. The push assembly 30 pushes the multiple number plates 20 in turn during the movement and provides a force for each number plate 20 to move from the first position to the second position. The multiple active blocks 40 are respectively connected to the multiple number plates 20 in the second position. The push assembly 30 pushes the multiple number plates 20 in turn during the movement, so that each number plate 20 moves to the second position and is respectively connected to the multiple active blocks 40, thereby realizing the popping out of the multiple number plates 20 one by one, and increasing the fun of the mobile phone number display.

[0048] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A number plate device, characterized in that: include: A housing having a mounting cavity; A plurality of number plates, wherein the plurality of number plates are movably mounted in the mounting cavity along the length direction of the housing, each number plate having a first position and a second position, wherein the number plate in the first position is located in the mounting cavity, and the number plate in the second position protrudes from the housing; A push component, the push component is movably mounted on the shell along the length direction of the shell, and the push component pushes the plurality of number plates in sequence during movement, and provides a force for each number plate to move from the first position to the second position; and A plurality of movable card blocks, wherein the plurality of movable card blocks are respectively engaged with the plurality of number plates at the second position; the plurality of movable card blocks correspond to the plurality of number plates one by one, each number plate has a card slot, and the card slot of the number plate at the second position is engaged with the corresponding movable card block; The push assembly includes an operating member and a push member, wherein the operating member is connected to the push member and is movably disposed in the housing along the length direction of the housing, and the push member is located in the installation cavity, and pushes the plurality of number plates in sequence during the movement of the operating member, and provides a force for each number plate to move from the first position to the second position; The push member has a first push inclined surface, and each of the number plates includes a first contact arc surface. During the movement of the push component, a plurality of the first contact arc surfaces sequentially contact and slide over the first push inclined surface.

2. The number plate device according to claim 1, characterized in that: The push member also has a second push inclined surface, which is opposite to the first push inclined surface. Each number plate also includes a second contact arc surface, which is connected to the first contact arc surface. During the movement of the push component, multiple second contact arc surfaces contact and slide over the second push inclined surface in turn.

3. The number plate device according to claim 1, characterized in that: The shell is provided with a slide groove, the extension direction of the slide groove is consistent with the length direction of the shell, and the operating member is slidably arranged in the slide groove and exposed outside the shell.

4. The number plate device according to claim 1, characterized in that: The number plate device further comprises a back plate, which is installed in the shell, and a plurality of movable card blocks are telescopically installed on the back plate.

5. The number plate device according to claim 4, characterized in that: The number plate device also includes a card block control rod, the length direction of the card block control rod is consistent with the length direction of the shell, the card block control rod is telescopically installed on the back plate, the telescopic direction of the card block control rod is consistent with the telescopic direction of the movable card block, and the card block control rod is against a plurality of the movable card blocks.

6. The number plate device according to claim 5, characterized in that: The number plate device also includes a pull rod, which is connected to the block control rod. The pull rod includes a rod body and a stopper. The rod body passes through the stopper, and the stopper selectively abuts against or separates from the back plate during the pulling of the pull rod.

7. The number plate device according to claim 6, characterized in that: The rod body includes a first connecting rod, a second connecting rod and a third connecting rod, the third connecting rod is connected between the first connecting rod and the second connecting rod, the stop portion includes a first stop portion and a second stop portion, the first connecting rod and the third connecting rod are passed through the first stop portion, the second connecting rod and the third connecting rod are passed through the second stop portion, and the first connecting rod and the second connecting rod are respectively connected to the two ends of the length direction of the block control rod.

8. The number plate device according to claim 4, characterized in that: The number plate device further comprises a baffle, which is mounted on the back plate and located in the mounting cavity, and a plurality of the number plates are located between the housing and the baffle.

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