Advertising board fixing device

Abstract

The utility model belongs to the technical field of advertising board fixing, and particularly relates to an advertising board fixing device which comprises a base, a supporting rod is arranged at the top of the base, a rectangular groove is formed in the bottom of the supporting rod, and a rectangular block fixed to the top of the base is installed in the rectangular groove in an inserted mode. The fixing assembly is located in the supporting rod and used for fixing the supporting rod; the limiting groove is formed in one side of the supporting rod, two sliding blocks are installed in the limiting groove in a sliding mode, inserting grooves are formed in the sliding blocks, first sliding grooves communicated with the inserting grooves are formed in the sliding blocks, limiting rods are installed in the inserting grooves in an inserted mode, and first limiting blocks are installed in the first sliding grooves in a sliding mode. The top and the bottom of the advertising board body can be fixed, the fixing effect of the advertising board body is better, the wind resistance of the advertising board body is higher, the supporting rod can be fixed, the fixing mode is convenient, and meanwhile later disassembly is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of billboard fixing, and particularly relates to a billboard fixing device. Background Art

[0002] Billboards are effective tools for enterprises to promote products and services. Through vivid images, eye-catching texts and attractive designs, they can quickly attract the attention of potential customers and convey the features, advantages and values of products.

[0003] For example, a Chinese patent with the publication number CN213519153U discloses a billboard fixing device, which relates to the field of billboard fixing devices. It includes a fixing column and a billboard main body. A combination mechanism for installing the billboard main body is installed on the top surface of the fixing column. The combination mechanism includes a first combination part and a second combination part. The first combination part and the second combination part are respectively located on both side surfaces of the fixing column. A first pin shaft is connected between the first combination part and the second combination part. A sleeve is fixedly installed on one side surface of the second combination part. A fixing mechanism is inserted into the sleeve. A second pin shaft is inserted into the top of the sleeve. The billboard main body is connected to the sleeve through the fixing mechanism. The combination mechanism on the surface of the fixing column and the fixing mechanism connected to the sleeve can, when it is necessary to replace the advertisement, turn the screw out of the first thread groove and the second thread groove, take out the connecting frame from the connecting groove, and replace the billboard main body in the connecting frame.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use. For example, when fixing the billboard main body, it can only fix and support the top of the billboard main body, and cannot fix and support the bottom of the billboard main body. If the wind force is large, the billboard main body may shake violently, which is likely to cause damage to the billboard main body. Moreover, this device is not convenient for fixing the fixing column. In view of this, we propose a billboard fixing device. Content of the Utility Model

[0006] The purpose of the utility model is to provide a billboard fixing device to solve the problems put forward in the above background art.

[0007] In view of this, the utility model provides a billboard fixing device, including:

[0008] A base, a support rod is arranged on the top of the base, a rectangular groove is opened at the bottom of the support rod, and a rectangular block fixed to the top of the base is inserted and installed in the rectangular groove;

[0009] A fixing component, which is located in the support rod and is used for fixing the support rod;

[0010] A limiting groove is provided on one side of the support rod. Two sliders are slidably installed in the limiting groove. A slot is formed in the slider, and a first chute communicating with the slot is formed in the slider. A limiting rod is inserted into the slot. A first limiting block is slidably installed in the first chute. One end of the first limiting block extends into the limiting rod. A first pull rod is fixedly installed in the first chute at the other end of the first limiting block and located inside the first chute. The two first pull rods respectively penetrate through the two opposite sides of the two first chutes and extend to the outside. A first spring is sleeved on the first pull rod in the first chute. A billboard main body is fixedly installed between the two limiting rods.

[0011] A driving assembly is located inside the support rod and is used to drive the two sliders to approach or move away from each other.

[0012] In this technical solution, during installation, first place the base at the designated location. Subsequently, the staff place a number of expansion bolts into the corresponding installation holes on the base through auxiliary tools, and then fix the base to the ground through the auxiliary tools and the number of expansion bolts. Subsequently, the staff align the rectangular groove at the bottom of the support rod with the rectangular block, and then displace the support rod downward so that the rectangular groove sleeves on the rectangular block. Through the provided fixing assembly, the fixing assembly will fix the support rod on the rectangular block.

[0013] Subsequently, according to the height of the billboard main body, the staff use the provided driving assembly to drive the two sliders to approach each other until the slots on the two sliders are adjusted to the appropriate positions. Subsequently, the staff align the two limiting rods on the billboard main body with the corresponding slots, and then displace the billboard main body in the direction close to the support rod, so that the billboard main body drives the two limiting rods to displace. Accordingly, the two limiting rods will be inserted into the corresponding slots. During the displacement process, the limiting rods will squeeze the inclined surface at one end of the first limiting block. The first limiting block will be retracted into the first chute under the extrusion. At this time, the first spring will also contract under the extrusion. Subsequently, when the two limiting rods can no longer be displaced in the corresponding slots, under the action of the rebounding force of the first spring, the first spring will push the first limiting block to displace in the direction close to the limiting rod until one end of the first limiting block is inserted into the limiting rod. At this time, the two limiting rods will be fixed in the corresponding slots, and the billboard main body will also be fixed.

[0014] In the above technical solution, further, the fixing assembly includes:

[0015] The second sliding groove, the second sliding groove is opened in the support rod and is located on one side of the rectangular groove. A second limiting block is slidably installed in the second sliding groove. One end of the second limiting block extends into the rectangular block. The other end of the second limiting block is fixedly installed with a second pull rod. One end of the second pull rod penetrates through one side of the second sliding groove and extends to the outside. A second spring is sleeved on the second pull rod in the second sliding groove.

[0016] In this technical solution, the user aligns the rectangular groove at the bottom of the support rod with the rectangular block. Subsequently, the support rod is displaced downward so that the rectangular groove is sleeved on the rectangular block. Continuing to displace the support rod downward, at this time, the inclined surface at one end of the second limiting block will be squeezed by the rectangular block and displaced into the second sliding groove. And the second spring will be compressed by the second limiting block until the second limiting block completely enters the second sliding groove and the support rod can no longer be displaced downward. At this time, the bottom of the support rod will contact the top of the base. Subsequently, under the action of the rebounding force of the second spring, the second spring will push the second limiting block in the direction of the rectangular block, so that one end of the second limiting block will be inserted into the rectangular block. At this time, the support rod will be fixed on the rectangular block.

[0017] In the above technical solution, further, the second sliding groove communicates with the rectangular groove. One end of the second limiting block is inserted and matched with the rectangular block, and one end of the second limiting block is of an inclined structure. The two ends of the second spring are tightly welded to the other end of the second limiting block and the inner wall of the second sliding groove respectively. The second pull rod is slidably connected with the second sliding groove and the support rod.

[0018] In this technical solution, it is ensured that one end of the second limiting block can be inserted into the rectangular block; it is ensured that the rectangular block can squeeze the second limiting block to make it displace; it is ensured that the structure of the second spring is stable; it is ensured that the second pull rod can operate normally.

[0019] In the above technical solution, further, the driving assembly includes:

[0020] A bidirectional threaded rod, the bidirectional threaded rod is rotatably installed in the limiting groove, and one end of the bidirectional threaded rod penetrates through the two sliders;

[0021] A power cavity, the power cavity is opened in the support rod and is located between the limiting groove and the second sliding groove. A worm gear is rotatably installed directly below the bidirectional threaded rod in the power cavity. A worm is rotatably installed on one side of the worm gear in the power cavity. The worm is meshed with the worm gear. One end of the worm gear penetrates through the top of the power cavity and extends into the limiting groove, and one end of the worm gear is coaxially connected with the bidirectional threaded rod. One end of the worm penetrates through one side of the power cavity and extends to the outside.

[0022] In this technical solution, according to the height of the billboard main body, the operator rotates the rocker on the worm in the forward direction by hand to drive the worm to rotate. Under the meshing effect, the worm will drive the worm wheel to rotate. Subsequently, the worm wheel will drive the double-threaded rod to rotate. Under the effect of the thread, the double-threaded rod will drive the two sliders to approach each other until the slots on the two sliders are adjusted to the appropriate positions. At the same time, the operator can also rotate the rocker on the worm in the reverse direction, so that the two sliders can move away from each other.

[0023] In the above technical solution, further, two sections of threads with opposite helix directions are provided on the double-threaded rod. The slider is threadedly connected to the double-threaded rod. One end of the worm wheel is rotatably connected to the limiting groove, and one end of the worm is rotatably connected to the support rod.

[0024] In this technical solution, under the effect of the thread, when the double-threaded rod rotates, it will drive the two sliders to approach or move away from each other; ensure that one end of the worm wheel can rotate in the limiting groove; ensure that one end of the worm can rotate normally.

[0025] In the above technical solution, further, the rectangular block and the base are of an integrally formed structure. The cross sections of the limiting rod and the slot are both of an isosceles trapezoid structure.

[0026] In this technical solution, ensure the structural stability between the rectangular block and the base; ensure that after the limiting rod is inserted into the slot, it will not move up and down.

[0027] In the above technical solution, further, one end of the first limiting block is of an inclined structure. One end of the first pull rod is slidably connected to the first chute and the slider. The two ends of the first spring are respectively tightly welded to the inner wall of the first chute and the other end of the first limiting block.

[0028] In this technical solution, ensure that the limiting rod can squeeze the first limiting block to make it displace; ensure that the first pull rod can slide normally; ensure the structural stability of the first spring.

[0029] The beneficial effects of the present utility model are:

[0030] 1. For this billboard fixing device, with the cooperation among the two limiting rods, two slots, two first limiting blocks, two first chutes, two first springs, two sliders and the driving assembly, both the top and the bottom of the billboard main body can be fixed, making the fixing effect better and enhancing the wind resistance of the billboard main body.

[0031] 2. For this billboard fixing device, with the cooperation among the base, rectangular groove, rectangular block and fixing assembly provided, it is ensured that the support rod can be fixed. The fixing method is relatively convenient and is also convenient for later disassembly. Description of the Drawings

[0032] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0033] Figure 2 It is one of the schematic diagrams of the internal structure of the slider in the present utility model;

[0034] Figure 3 For the present utility model Figure 2 The enlarged schematic diagram of the structure at position A;

[0035] Figure 4 It is the second schematic diagram of the internal structure of the slider in the present utility model;

[0036] Figure 5 It is one of the schematic diagrams of the internal structure of the support rod in the present utility model;

[0037] Figure 6 For the present utility model Figure 5 The enlarged schematic diagram of the structure at position B;

[0038] Figure 7 It is the second schematic diagram of the internal structure of the support rod in the present utility model;

[0039] Figure 8 For the present utility model Figure 7 The enlarged schematic diagram of the structure at position C;

[0040] Figure 9 It is the schematic diagram of the explosion structure of the rectangular block and the second limiting block in the present utility model;

[0041] Figure 10 It is the sectional schematic diagram of the support rod in the present utility model.

[0042] The markings in the figure are shown as:

[0043] 1. Base; 2. Support rod; 3. Limiting groove; 4. Bidirectional threaded rod; 5. Slider; 6. First pull rod; 7. Limiting rod; 8. Billboard main body; 9. Second pull rod; 10. First sliding groove; 11. First spring; 12. First limiting block; 13. Slot; 14. Power cavity; 15. Worm; 16. Second sliding groove; 17. Second spring; 18. Second limiting block; 19. Rectangular block; 20. Rectangular groove; 21. Worm gear. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0045] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0047] It should be noted that in the description of the present application, the directional terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. usually indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the protection scope of the present application; the directional terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0048] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0049] Embodiment 1:

[0050] Please refer to Figure 1 - Figure 10 As shown, this embodiment provides a billboard fixing device, including:

[0051] A base 1, a support rod 2 is provided at the top of the base 1, a rectangular groove 20 is opened at the bottom of the support rod 2, and a rectangular block 19 fixed to the top of the base 1 is inserted and installed in the rectangular groove 20;

[0052] A fixing component, which is located inside the support rod 2 and is used to fix the support rod 2;

[0053] A limiting groove 3 is opened on one side of the support rod 2, two sliders 5 are slidably installed in the limiting groove 3, a slot 13 is opened in the slider 5, and a first chute 10 communicating with the slot 13 is opened in the slider 5. A limiting rod 7 is inserted and installed in the slot 13, a first limiting block 12 is slidably installed in the first chute 10, one end of the first limiting block 12 extends into the limiting rod 7, and a first pull rod 6 is fixedly installed at the other end of the first limiting block 12 and located in the first chute 10. The far ends of the two first pull rods 6 respectively penetrate through the far sides of the two first chutes 10 and both extend to the outside. A first spring 11 is sleeved on the first pull rod 6 in the first chute 10, and a billboard main body 8 is fixedly installed between the two limiting rods 7;

[0054] A driving component, which is located inside the support rod 2 and is used to drive the two sliders 5 to approach or move away from each other.

[0055] Among them, during installation, first place the base 1 at the designated location. Subsequently, the staff place a number of expansion bolts into the corresponding installation holes on the base 1. Then, use auxiliary tools and a number of expansion bolts to fix the base 1 to the ground. Subsequently, the staff align the rectangular groove 20 at the bottom of the support rod 2 with the rectangular block 19. Then, displace the support rod 2 downward so that the rectangular groove 20 is sleeved on the rectangular block 19. Through the set fixing component, the fixing component will fix the support rod 2 on the rectangular block 19;

[0056] Subsequently, according to the height of the billboard main body 8, the staff use the set driving component to drive the two sliders 5 to approach each other until the slots 13 on the two sliders 5 are adjusted to the appropriate positions. Then, the staff align the two limiting rods 7 on the billboard main body 8 with the corresponding slots 13. Then, displace the billboard main body 8 in the direction close to the support rod 2, so that the billboard main body 8 drives the two limiting rods 7 to displace. Accordingly, the two limiting rods 7 will be inserted into the corresponding slots 13. During the displacement process, the limiting rod 7 will squeeze the inclined surface at one end of the first limiting block 12. The first limiting block 12 will be retracted into the first chute 10 under the extrusion. At this time, the first spring 11 will also contract under the extrusion. Then, when the two limiting rods 7 can no longer continue to displace in the corresponding slots 13, under the action of the rebounding force of the first spring 11, the first spring 11 will push the first limiting block 12 to displace in the direction close to the limiting rod 7 until one end of the first limiting block 12 is inserted into the limiting rod 7. At this time, the two limiting rods 7 will be fixed in the corresponding slots 13, so that the billboard main body 8 will also be fixed.

[0057] Embodiment 2:

[0058] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The fixing component includes:

[0059] The second chute 16 is opened in the support rod 2 and is located on one side of the rectangular groove 20. A second limiting block 18 is slidably installed in the second chute 16. One end of the second limiting block 18 extends into the rectangular block 19. The other end of the second limiting block 18 is fixedly installed with a second pull rod 9. One end of the second pull rod 9 penetrates through one side of the second chute 16 and extends to the outside. A second spring 17 is sleeved on the second pull rod 9 in the second chute 16.

[0060] Among them, the personnel align the rectangular groove 20 at the bottom of the support rod 2 with the rectangular block 19. Subsequently, the support rod 2 is displaced downward so that the rectangular groove 20 is sleeved on the rectangular block 19. Continuing to displace the support rod 2 downward, at this time, the inclined surface at one end of the second limiting block 18 will be squeezed by the rectangular block 19 and displaced into the second sliding groove 16. Moreover, the second spring 17 will be compressed by the second limiting block 18 until the second limiting block 18 completely enters the second sliding groove 16 and the support rod 2 can no longer be displaced downward. At this time, the bottom of the support rod 2 will contact the top of the base 1. Subsequently, under the action of the rebounding force of the second spring 17, the second spring 17 will push the second limiting block 18 to displace towards the rectangular block 19, so that one end of the second limiting block 18 will be inserted into the rectangular block 19. At this time, the support rod 2 will be fixed on the rectangular block 19.

[0061] Embodiment 3:

[0062] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the second sliding groove 16 communicates with the rectangular groove 20, one end of the second limiting block 18 is inserted and matched with the rectangular block 19, and one end of the second limiting block 18 has an inclined structure. The two ends of the second spring 17 are tightly welded to the other end of the second limiting block 18 and the inner wall of the second sliding groove 16 respectively. The second pull rod 9 is slidably connected to the second sliding groove 16 and the support rod 2.

[0063] Among them, it is ensured that one end of the second limiting block 18 can be inserted into the rectangular block 19; it is ensured that the rectangular block 19 can squeeze the second limiting block 18 to make it displace; it is ensured that the structure of the second spring 17 is stable; it is ensured that the second pull rod 9 can operate normally.

[0064] Embodiment 4:

[0065] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the driving assembly includes:

[0066] A bidirectional threaded rod 4, the bidirectional threaded rod 4 is rotatably installed in the limiting groove 3, and one end of the bidirectional threaded rod 4 penetrates through the two sliders 5;

[0067] A power cavity 14, the power cavity 14 is opened in the support rod 2 and is located between the limiting groove 3 and the second sliding groove 16. A worm gear 21 is rotatably installed in the power cavity 14 and is located directly below the bidirectional threaded rod 4. A worm 15 is rotatably installed on one side of the worm gear 21 in the power cavity 14. The worm 15 meshes with the worm gear 21. One end of the worm gear 21 penetrates through the top of the power cavity 14 and extends into the limiting groove 3, and one end of the worm gear 21 is coaxially connected to the bidirectional threaded rod 4. One end of the worm 15 penetrates through one side of the power cavity 14 and extends to the outside.

[0068] Among them, according to the height of the billboard main body 8, the personnel rotate the rocker on the worm 15 forward by hand and drive the worm 15 to rotate. Under the meshing action, the worm 15 will drive the worm wheel 21 to rotate. Subsequently, the worm wheel 21 will drive the bidirectional threaded rod 4 to rotate. Under the action of the thread, the bidirectional threaded rod 4 will drive the two sliders 5 to approach each other until the slots 13 on the two sliders 5 are adjusted to the appropriate positions. At the same time, the personnel can also rotate the rocker on the worm 15 in the reverse direction, so that the two sliders 5 can move away from each other.

[0069] Embodiment 5:

[0070] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. There are two threads with opposite helix directions on the bidirectional threaded rod 4. The slider 5 is threadedly connected to the bidirectional threaded rod 4. One end of the worm wheel 21 is rotatably connected to the limiting groove 3, and one end of the worm 15 is rotatably connected to the support rod 2.

[0071] Among them, under the action of the thread, when the bidirectional threaded rod 4 rotates, it will drive the two sliders 5 to approach or move away from each other; ensure that one end of the worm wheel 21 can rotate in the limiting groove 3; ensure that one end of the worm 15 can rotate normally.

[0072] Embodiment 6:

[0073] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The rectangular block 19 and the base 1 are integrally formed structures. The cross-sections of the limiting rod 7 and the slot 13 are both isosceles trapezoid structures.

[0074] Among them, ensure the structural stability between the rectangular block 19 and the base 1; ensure that the limiting rod 7 will not move up and down after being inserted into the slot 13.

[0075] Embodiment 7:

[0076] This embodiment provides a billboard fixing device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. One end of the limiting block 12 is inclined. One end of the pull rod 6 is slidably connected to the chute 10 and the slider 5. Both ends of the spring 11 are tightly welded to the inner wall of the chute 10 and the other end of the limiting block 12 respectively.

[0077] Among them, ensure that the limiting rod 7 can squeeze the limiting block 12 to make it displace; ensure that the pull rod 6 can slide normally; ensure the structural stability of the spring 11.

[0078] Working principle: During installation, first place the base 1 at the designated location. Subsequently, the staff place several expansion bolts into the corresponding installation holes on the base 1 through auxiliary tools. Then, the base 1 is fixed to the ground through the auxiliary tools and several expansion bolts. Subsequently, the staff align the rectangular groove 20 at the bottom of the support rod 2 with the rectangular block 19. Then, displace the support rod 2 downward so that the rectangular groove 20 is sleeved on the rectangular block 19. Continue to displace the support rod 2 downward. At this time, the inclined surface at one end of the limiting block two 18 will be squeezed by the rectangular block 19 and displace into the chute two 16. And the spring two 17 will be squeezed by the limiting block two 18 and contract until the limiting block two 18 completely enters the chute two 16 and the support rod 2 can no longer be displaced downward. At this time, the bottom of the support rod 2 will contact the top of the base 1. Subsequently, under the action of the rebounding force of the spring two 17, the spring two 17 will push the limiting block two 18 to displace towards the direction of the rectangular block 19, so that one end of the limiting block two 18 will be inserted into the rectangular block 19. At this time, the support rod 2 will be fixed on the rectangular block 19;

[0079] Subsequently, according to the height of the billboard main body 8, the staff rotate the rocker on the worm 15 by hand to drive the worm 15 to rotate. Under the meshing action, the worm 15 will drive the worm wheel 21 to rotate. Subsequently, the worm wheel 21 will drive the double-threaded screw rod 4 to rotate. Under the action of the thread, the double-threaded screw rod 4 will drive the two sliders 5 to approach each other until the slots 13 on the two sliders 5 are adjusted to the appropriate positions. Then, the staff align the two limiting rods 7 on the billboard main body 8 with the corresponding slots 13. Then, displace the billboard main body 8 towards the direction close to the support rod 2, so that the billboard main body 8 drives the two limiting rods 7 to displace. Subsequently, the two limiting rods 7 will be inserted into the corresponding slots 13. During the displacement process, the limiting rod 7 will squeeze the inclined surface at one end of the limiting block one 12, and the limiting block one 12 will be retracted into the chute one 10 under the squeeze. At this time, the spring one 11 will also contract under the squeeze. Then, when the two limiting rods 7 can no longer be displaced in the corresponding slots 13, under the action of the rebounding force of the spring one 11, the spring one 11 will push the limiting block one 12 to displace towards the direction close to the limiting rod 7 until one end of the limiting block one 12 is inserted into the limiting rod 7. At this time, the two limiting rods 7 will be fixed in the corresponding slots 13, so that the billboard main body 8 will also be fixed. Because the worm 15 and the worm wheel 21 have a self-locking function, without external force, the worm 15 and the worm wheel 21 will not rotate;

[0080] When disassembling, the staff first pull the two first pull rods 6, causing the two first pull rods 6 to displace away from the billboard main body 8. At this time, the two first limit blocks 12 will also displace away from the billboard main body 8, and the first spring 11 will be compressed and contract until the two first limit blocks 12 are completely withdrawn from the corresponding limit rods 7. At this time, the two limit rods 7 will be released from the limit, and the two limit rods 7 can be withdrawn from the corresponding slots 13, and the billboard main body 8 can be disassembled together. Subsequently, the staff can pull the second pull rod 9, causing the second pull rod 9 to drive the second limit block 18 to displace away from the rectangular block 19 until the second limit block 18 completely enters the second chute 16. At this time, the second spring 17 will be compressed and contract. At this time, the support rod 2 can be displaced upward so that the rectangular groove 20 is completely separated from the rectangular block 19 to complete the disassembly of the support rod 2, and the operation is convenient.

[0081] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A billboard fixing device, characterized in that: include: A base (1), wherein a support rod (2) is provided at the top of the base (1), a rectangular groove (20) is provided at the bottom of the support rod (2), and a rectangular block (19) fixed to the top of the base (1) is inserted and installed in the rectangular groove (20); A fixing assembly, the fixing assembly being located inside the support rod (2) and being used to fix the support rod (2); A limit groove (3), wherein the limit groove (3) is provided on one side of the support rod (2), wherein two sliders (5) are slidably installed in the limit groove (3), wherein a slot (13) is provided in the slider (5), and wherein a slide groove (10) connected to the slot (13) is provided in the slider (5), wherein a limit rod (7) is inserted and installed in the slot (13), wherein a limit block (12) is slidably installed in the slide groove (10), and wherein the limit block (12) is ) extends into the limit rod (7), the other end of the limit block (12) is located in the slide groove (10) and is fixedly installed with a pull rod (6), the ends of the two pull rods (6) that are away from each other respectively penetrate the sides of the two slide grooves (10) that are away from each other and extend to the outside, a spring (11) is provided in the slide groove (10) and is located on the pull rod (6), and a billboard body (8) is fixedly installed between the two limit rods (7); A driving assembly is located inside the support rod (2) and is used to drive the two sliders (5) to move closer to each other or away from each other.

2. A billboard fixing device according to claim 1, characterized in that: The fixing assembly comprises: A second slide groove (16), wherein the second slide groove (16) is opened in the support rod (2) and is located on one side of the rectangular groove (20), a second limit block (18) is slidably installed in the second slide groove (16), one end of the second limit block (18) extends into the rectangular block (19), and a second pull rod (9) is fixedly installed on the other end of the second limit block (18), one end of the second pull rod (9) passes through one side of the second slide groove (16) and extends to the outside, and a second spring (17) is provided in the second slide groove (16) and on the second pull rod (9).

3. A billboard fixing device according to claim 2, characterized in that: The second slide groove (16) is connected to the rectangular groove (20), one end of the second limit block (18) is plugged into the rectangular block (19), and one end of the second limit block (18) is in an inclined structure, the two ends of the second spring (17) are tightly welded to the other end of the second limit block (18) and the inner wall of the second slide groove (16), and the second pull rod (9) is slidably connected to the second slide groove (16) and the support rod (2).

4. The billboard fixing device according to claim 1, characterized in that: The drive assembly comprises: A bidirectional threaded rod (4), wherein the bidirectional threaded rod (4) is rotatably mounted in the limiting groove (3), and one end of the bidirectional threaded rod (4) passes through two sliders (5); A power chamber (14), the power chamber (14) is opened in the support rod (2) and is located between the limit groove (3) and the second slide groove (16), a worm wheel (21) is rotatably installed in the power chamber (14) and located directly below the bidirectional threaded rod (4), a worm (15) is rotatably installed in the power chamber (14) and located on one side of the worm wheel (21), the worm (15) is meshed with the worm wheel (21), one end of the worm wheel (21) passes through the top of the power chamber (14) and extends into the limit groove (3), and one end of the worm wheel (21) is coaxially connected to the bidirectional threaded rod (4), and one end of the worm (15) passes through one side of the power chamber (14) and extends to the outside.

5. A billboard fixing device according to claim 4, characterized in that: The bidirectional threaded rod (4) is provided with two sections of threads with opposite rotation directions, the slider (5) is threadedly connected to the bidirectional threaded rod (4), one end of the worm wheel (21) is rotationally connected to the limit groove (3), and one end of the worm (15) is rotationally connected to the support rod (2).

6. The billboard fixing device according to claim 1, characterized in that: The rectangular block (19) and the base (1) are integrally formed structures, and the cross-sections of the limiting rod (7) and the slot (13) are both isosceles trapezoidal structures.

7. The billboard fixing device according to claim 1, characterized in that: One end of the limit block (12) is in an inclined structure, one end of the pull rod (6) is slidably connected to the slide groove (10) and the slider (5), and the two ends of the spring (11) are tightly welded to the inner wall of the slide groove (10) and the other end of the limit block (12) respectively.

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