Advertising pins for securing signs

Abstract

The utility model relates to the technical field of advertising signboard fixing accessory, especially relates to an advertising nail for fixing a signboard, including base, base is hollow cylinder structure, the front end of base is provided with mounting hole, the inside of mounting hole is provided with countersunk head screw, still include the limiting post of setting in the inside of base, the periphery of limiting post is fixed and installs two groups of bosses, and the boss is in contact with base inner chamber wall surface and is pasted together, and the side that two groups of bosses are away from countersunk head screw all is provided with a group of locking mechanism, the utility model discloses the connection fixed of base and the installation wall surface, then the inside of base is inserted limiting post, in this process, the periphery boss and base inner chamber wall surface form accurate sliding guide cooperation, ensure that limiting post axial stable insertion and make the front end tightly countersunk head screw head, form rigid limiting constraint, and locking mechanism and boss synergistic effect, through mechanical interlock mechanism bidirectional locking of limiting post fixed, guarantee countersunk head screw anti-loosening performance in long -term use.

Description

Technical Field

[0001] This utility model relates to the technical field of advertising sign fixing accessories, and in particular to advertising nails used for fixing signs. Background Technology

[0002] Outdoor billboards and signs are widely used in modern urban environments. Their fixing method is directly related to safety and aesthetics. Most signs are usually fixed by split advertising nails. The non-contact design keeps the sign and the wall surface appropriately spaced, achieving a sense of spatial hierarchy while reducing the risk of surface wear caused by direct contact.

[0003] Traditional advertising nails are directly connected and fixed to the wall using countersunk screws. After long-term use, the countersunk screws are susceptible to environmental vibration, temperature changes, or material fatigue, which weakens the engagement between the screw and the wall threads, leading to loosening. This reduces the stability of the connection between the advertising nail and the wall, and in severe cases, may cause the sign to fall off, posing a public safety hazard.

[0004] Therefore, to address the aforementioned issues, an advertising nail for fixing signs can be designed. By integrating an additional limiting structure inside the advertising nail, the countersunk screw can be locked in place, thereby eliminating the risk of connection failure caused by loose screws and significantly improving the long-term reliability and safety of the installation system. Utility Model Content

[0005] To overcome the problem that traditional advertising nails, after long-term use, are prone to loosening due to external factors, which reduces the stability of the connection between the advertising nail and the wall and may even cause the sign to fall off, posing a public safety hazard.

[0006] The technical solution of this utility model is as follows: an advertising nail for fixing signs includes a base, which is a hollow cylindrical structure. The front end of the base has an installation hole, and a countersunk screw passes through the installation hole. It also includes a limiting post set inside the base. Two sets of bosses are fixedly installed on the periphery of the limiting post. The bosses are in contact with and fit against the inner wall of the base. A locking mechanism is set on the side of the two sets of bosses away from the countersunk screw. A rivet nut is set on the periphery of the limiting post, and the rivet nut is located outside the base.

[0007] Preferably, by setting countersunk screws to pass through the mounting holes and connect with the mounting wall, the base and the mounting wall can be connected and fixed. Then, a limiting post is inserted into the base. During this process, its outer boss and the inner wall of the base form a precise sliding guide fit, ensuring that the limiting post is axially stable and that its front end is pressed against the head of the countersunk screw, forming a rigid limiting constraint. The signboard back plate is quickly assembled by using rivet nuts, completing the mechanical connection of the signboard. The locking mechanism and the boss work together to lock and fix the limiting post in both directions, effectively eliminating the risk of displacement of the limiting post caused by environmental factors such as vibration and temperature difference, and ensuring the anti-loosening performance of the countersunk screw during long-term use.

[0008] Preferably, the rear periphery of the limiting post is provided with a threaded section that matches the rivet nut.

[0009] Preferably, the mounting hole is a countersunk hole, the inner wall of which matches the head shape of the countersunk screw.

[0010] Preferably, the locking mechanism includes a through hole in the side wall of the base, and a pin is slidably connected inside the through hole, the pin contacting the boss.

[0011] Preferably, an iron plate is fixedly installed on the outer periphery of the side wall of the base, the iron plate is located outside the through hole, and a magnet is fixedly installed on the outer periphery of the pin, the magnet being magnetically connected to the iron plate.

[0012] Preferably, the surface of the iron plate has several grooves, and the lower end of the magnet block has several protrusions that match the grooves.

[0013] The beneficial effects of this utility model are: After the base is fixed to the wall surface using countersunk screws, a limiting post is inserted into the base. During this process, the outer boss of the limiting post forms a precise sliding guide fit with the inner wall of the base cavity, ensuring that the limiting post is inserted axially and that its front end presses against the head of the countersunk screw, forming a rigid limiting constraint. Then, a pin is inserted into the through hole. The part of the pin that extends into the inner cavity of the base contacts the side wall of the boss, which can lock and fix the limiting post inserted into the base cavity, effectively eliminating the risk of displacement of the limiting post, and ensuring that its front end can maintain contact with the head of the countersunk screw, thus ensuring the anti-loosening performance of the countersunk screw during long-term use. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of the advertising nail for fixing signs according to this utility model; Figure 2 The diagram shown is a three-dimensional cross-sectional view of the advertising nail for fixing signs according to this utility model. Figure 3 The diagram shown is a three-dimensional structural schematic of the advertising nail pin for fixing signs in the disassembled state according to this utility model. Figure 4 The diagram shown is a three-dimensional structural schematic of the advertising nail pin for fixing signs according to this utility model. Figure 5 The diagram shown is an overall assembly schematic of Embodiment 2 of the advertising nail for fixing signs according to this utility model; Figure 6 The image shown is an advertising nail for fixing signs according to this utility model. Figure 5 Enlarged structural diagram of the area within the box; Explanation of reference numerals in the attached drawings: 1. Base; 2. Countersunk screw; 3. Limiting post; 301. Boss; 4. Rivet nut; 501. Through hole; 502. Pin; 503. Iron plate; 504. Magnet block; 505. Groove; 506. Protrusion. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Example 1 Please see Figure 1 and Figure 2 This utility model provides an embodiment of an advertising nail for fixing signs, including a base 1, which is a hollow cylindrical structure. The base 1 has a mounting hole at its front end, through which a countersunk screw 2 passes. It also includes a limiting post 3 disposed inside the base 1. Two sets of bosses 301 are fixedly installed on the periphery of the limiting post 3, and the bosses 301 are in contact with and fit against the inner wall of the base 1. A locking mechanism is provided on the side of each set of bosses 301 away from the countersunk screw 2. A rivet nut 4 is provided on the periphery of the limiting post 3, located outside the base 1. By setting the countersunk screw 2 to pass through the mounting hole and connect to the mounting wall, it is possible to... The base 1 is connected and fixed to the mounting wall. Then, the limiting post 3 is inserted into the interior of the base 1. During this process, the outer boss 301 and the inner wall of the base 1 form a precise sliding guide fit to ensure that the limiting post 3 is inserted axially and that its front end is pressed against the head of the countersunk screw 2 to form a rigid limiting constraint. The signboard back plate is quickly assembled by the rivet nut 4 to complete the mechanical connection of the signboard. The locking mechanism and the boss 301 work together to lock the limiting post 3 in both directions, effectively eliminating the risk of displacement of the limiting post 3 caused by environmental factors such as vibration and temperature difference, and ensuring the anti-loosening performance of the countersunk screw 2 during long-term use.

[0017] Please see Figure 1 and Figure 2In this embodiment, the rear periphery of the limiting post 3 is provided with a threaded section that matches the rivet nut 4; the threaded fit enables the rivet nut 4 and the limiting post 3 to lock together axially, thereby achieving stable installation of the sign; the mounting hole is a countersunk hole, and its inner wall surface matches the head shape of the countersunk screw 2; forming a geometric fitting structure, effectively dispersing the stress concentration between the head of the countersunk screw 2 and the contact surface of the base 1, and also preventing the countersunk screw 2 from shifting during installation.

[0018] Please see Figure 3 and Figure 4 In this embodiment, the locking mechanism includes a through hole 501 formed in the side wall of the base 1. A pin 502 is slidably connected inside the through hole 501, and the pin 502 contacts the boss 301. An iron plate 503 is fixedly installed on the outer periphery of the side wall of the base 1, and the iron plate 503 is located outside the through hole 501. A magnet 504 is fixedly installed on the outer periphery of the pin 502, and the magnet 504 is magnetically connected to the iron plate 503. A plurality of grooves 505 are formed on the surface of the iron plate 503, and a plurality of grooves matching the grooves 505 are fixedly installed at the lower end of the magnet 504. The protrusion 506, through the insertion of the pin 502 into the through hole 501, achieves mechanical interlock with the boss 301, forming a radial constraint on the limiting post 3, suppressing its displacement tendency under dynamic load, and enhancing the stability of the limiting structure. The iron plate 503 and the magnet block 504 cooperate to realize the quick assembly and disassembly of the pin 502, and the groove 505 and the protrusion 506 form a double locking effect, which not only enhances the reliability of the magnetic connection, but also further suppresses the lateral slippage of the magnet block 504 through physical limiting, ensuring the stability of the pin 502 assembly.

[0019] During operation, the countersunk screw 2 passes through the mounting hole and connects with the mounting wall to fix the base 1 to the mounting wall. Then, the limiting post 3 is inserted into the interior of the base 1. During this process, its outer boss 301 forms a precision sliding guide fit with the inner wall of the base 1 to ensure that the limiting post 3 is inserted axially and stably and that its front end presses against the head of the countersunk screw 2 to form a rigid limiting constraint. Then, insert the pin 502 into the through hole 501. With the cooperation of the iron plate 503 and the magnet block 504, the pin 502 can be stably fixed on the periphery of the base 1. The part of the pin 502 that extends into the inner cavity of the base 1 contacts the side wall of the boss 301, thereby locking and fixing the limiting post 3 inserted into the base 1, effectively eliminating the risk of displacement of the limiting post 3, so that its front end can keep in contact with the head of the countersunk screw 2, and ensuring the anti-loosening performance of the countersunk screw 2 in long-term use. When disassembly and maintenance are required, simply pull out all the pins 502 to unlock the limit post 3, allowing it to be easily pulled out from inside the base 1, thus completing the disassembly of the signboard.

[0020] Example 2 Please see Figure 5 and Figure 6 The difference from Embodiment 1 is that the limiting post 3 uses a common round head screw, the through hole 501 is a threaded hole, and the pin 502 uses an internal hexagon stud. The pin is threaded to the base 1 through the through hole. During installation, the limiting post 3 is used to hold the countersunk screw 2, and then a hex wrench is used to screw the two sets of pins 502 into the two sets of through holes 501 respectively, so that the ends of the pins 502 contact the outer periphery of the limiting post 3. Under the action of friction, the limiting post 3 is locked. The overall structure is simpler, the manufacturing cost is lower, and it is suitable for the installation of smaller signs.

[0021] Through the above steps, the base 1 is connected and fixed to the mounting wall. Then, a limiting post 3 is inserted into the interior of the base 1. During this process, the outer boss 301 and the inner wall of the base 1 form a precise sliding guide fit, ensuring that the limiting post 3 is inserted axially and stably, and that the front end is pressed against the head of the countersunk screw 2, forming a rigid limiting constraint. The locking mechanism works in conjunction with the boss 301 to lock the limiting post 3 in both directions, ensuring the anti-loosening performance of the countersunk screw 2 during long-term use. This solves the problem that after long-term use, the countersunk screw 2 fixed to the wall of traditional advertising nails is prone to loosening due to external factors, which reduces the stability of the connection between the advertising nail and the wall and may even cause the sign to fall off, posing a public safety hazard.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An advertising nail for fixing a signboard, comprising a base (1), the base (1) being a hollow cylindrical structure, a mounting hole being provided at the front end of the base (1), and a countersunk screw (2) passing through the mounting hole, characterized in that: It also includes a limiting post (3) set inside the base (1). Two sets of bosses (301) are fixedly installed on the periphery of the limiting post (3). The bosses (301) are in contact with the inner wall of the base (1). A locking mechanism is provided on the side of the two sets of bosses (301) away from the countersunk screw (2). A rivet nut (4) is provided on the periphery of the limiting post (3). The rivet nut (4) is located outside the base (1).

2. The advertising nail for fixing signs according to claim 1, characterized in that: The rear periphery of the limiting post (3) is provided with a threaded section that matches the rivet nut (4).

3. The advertising nail for fixing signs according to claim 1, characterized in that: The mounting hole is a countersunk hole, and its inner wall surface matches the head shape of the countersunk screw (2).

4. The advertising nail for fixing signs according to claim 1, characterized in that: The locking mechanism includes a through hole (501) opened on the side wall of the base (1), and a pin (502) is slidably connected inside the through hole (501), and the pin (502) contacts the boss (301).

5. The advertising nail for fixing signs according to claim 4, characterized in that: An iron plate (503) is fixedly installed on the outer periphery of the side wall of the base (1). The iron plate (503) is located on the periphery of the through hole (501). A magnet (504) is fixedly installed on the periphery of the pin (502). The magnet (504) is magnetically connected to the iron plate (503).

6. The advertising nail for fixing signs according to claim 5, characterized in that: The surface of the iron plate (503) has several grooves (505), and the lower end of the magnet block (504) is fixedly installed with several protrusions (506) that match the grooves (505).

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