Double-end traceless nail

Abstract

The utility model relates to a double-end traceless nail, and belongs to the field of connecting nails, the double-end traceless nail comprises a traceless nail main body and an installation pin installed on the traceless nail main body in a sliding mode, the traceless nail main body and the installation pin are coaxially arranged, and the traceless nail main body is provided with an installation groove for the installation pin to be arranged in a sliding mode; the installation pin comprises a sliding rod installed in the installation groove in a sliding mode and a conical pin head connected to the side, away from the installation groove, of the sliding rod, the outer diameter of the conical pin head is larger than that of the sliding rod, and the depth of the installation groove is larger than the length of the installation pin. The traceless pin main body is provided with a first guide inclined surface matched with the bottom surface of the conical pin head at the mounting groove; an installation boss is further arranged on the outer side wall of the traceless nail body. The connecting structure has the effect that the connecting attractiveness of the keel and the plate with the elastomer layer is improved.

Description

Technical Field

[0001] This application relates to the field of connectors, and more particularly to a double-ended, non-marking connector. Background Technology

[0002] In the fields of modern decoration and furniture manufacturing, the quality and aesthetics of panel installation are of great concern. Therefore, in order to improve the flatness of the panel installation process, it is often necessary to lay a keel under the panel and then connect and fix the panel and the keel with nails. However, after traditional nails are driven into the panel, some nails are exposed on the surface of the panel, or installation holes are left in the panel after installation, which affects the overall aesthetics of the panel.

[0003] Currently, there is a type of board with an elastomer layer that needs to be connected to a keel. When it is connected to the keel, the elastomer layer is arranged on the side of the board facing away from the keel. Now, a double-ended traceless nail suitable for the above-mentioned board is provided. Utility Model Content

[0004] To improve the aesthetics of connecting keel to sheet metal with an elastomer layer, this application provides a double-headed traceless nail.

[0005] The double-ended traceless nail provided in this application adopts the following technical solution:

[0006] A double-headed non-marking nail includes a non-marking nail body and a mounting pin slidably mounted on the non-marking nail body. The non-marking nail body and the mounting pin are arranged coaxially. The non-marking nail body has a mounting groove for the mounting pin to slide. The mounting pin includes a sliding rod slidably mounted in the mounting groove and a tapered pin head connected to the side of the sliding rod away from the mounting groove. The outer diameter of the tapered pin head is larger than the outer diameter of the sliding rod, and the depth of the mounting groove is greater than the length of the mounting pin. The non-marking nail body has a first guide slope at the mounting groove for engaging with the bottom surface of the tapered pin head. The outer side wall of the non-marking nail body also has a mounting boss.

[0007] By adopting the above technical solution, during the installation of double-ended traceless nails, the side of the double-ended traceless nail furthest from the mounting groove is first fixed in the keel by tapping the mounting boss. The mounting boss also helps to limit the position of the double-ended traceless nail. Then, the board with the elastomeric layer is tapped into the side of the double-ended traceless nail where the mounting pin is installed. When the board and the keel are connected in place, the top of the tapered pin head of the mounting pin is exposed on the surface of the board. Then, by tapping the tapered pin head into the mounting groove, the mounting pin enters the mounting groove under the guidance of the first guide slope, thereby expanding the double-ended traceless nail. This allows the double-ended traceless nail to act as an expansion screw, thereby improving the connection strength between the board and the keel. After the tapered pin head of the mounting pin enters the mounting groove, the elastomeric layer of the board closes, so that the nail body is not exposed on the surface of the board, effectively improving the aesthetics of the connection between the keel and the board with the elastomeric layer.

[0008] Optionally, the traceless nail body includes a first nail body and a second nail body, the mounting boss is arranged on the side of the first nail body close to the second nail body, and the second nail body is provided with deformation grooves spaced apart circumferentially.

[0009] By adopting the above technical solution, the mounting boss is arranged on the side of the first nail body close to the second nail body. This ensures that during the installation of the double-ended non-marking nail, the first nail body can be fixed in the keel while the second nail body is located on the surface of the keel, thus limiting the position of the non-marking nail body. The deformation groove on the second nail body allows for local elastic deformation of the nail body under stress, thereby reducing stress concentration and preventing nail breakage.

[0010] Optionally, the non-marking nail body has a guide cone surface on the side of the second nail body away from the first nail body, and the conical pin head has a first cone surface that cooperates with the first guide slope and a second cone surface that extends in the direction away from the sliding rod, and the guide cone surface and the second cone surface have the same inclination angle.

[0011] By adopting the above technical solution, the inclination angle of the guide cone surface on the second nail body and the second cone surface on the cone-shaped pin head are the same, which makes the insertion of the second nail body carrying the installation pin into the plate smoother and helps to improve the installation accuracy of the double-headed non-marking nail. The cooperation between the first cone surface and the first guide slope helps to guide the sliding of the cone-shaped pin head in the installation groove, which helps the cone-shaped pin head to enter the installation groove smoothly.

[0012] Optionally, the mounting groove includes a first groove and a second groove in sequence along the direction towards the conical pin head. The diameter of the first groove is smaller than the diameter of the second groove. The bottom surface of the second groove has a second guide slope. The sliding rod has an abutment surface that mates with the second guide slope. When the second guide slope abuts with the abutment surface, the first guide slope abuts with the bottom surface of the conical pin head.

[0013] By adopting the above technical solution, the position of the mounting pin in the mounting groove is limited by the cooperation between the second guide slope on the second groove and the abutment surface on the sliding rod. This reduces the probability that the conical pin head will slip into the mounting groove during the insertion of the mounting pin into the plate, ensuring that part of the second pin body can be smoothly and completely inserted into the plate, and ensuring a stable connection between the keel and the plate.

[0014] Optionally, the inclination angle of the second guide slope is 20 to 40°.

[0015] By adopting the above technical solution, the inclination angle of the second guide slope is set to 20-40°, which not only helps to reduce the probability that the tapered pin head will be completely inserted into the mounting groove during the insertion of the mounting pin into the plate, affecting the connection between the keel and the plate, but also provides guidance for the subsequent sliding process of the mounting pin in the extension direction of the mounting groove.

[0016] Optionally, the mounting groove includes a first groove and a second groove in sequence along the direction towards the conical pin head. The diameter of the first groove is smaller than the diameter of the second groove. An elastic limiting pad is provided at the bottom of the second groove. When the bottom of the sliding rod abuts against the elastic limiting pad, the first guide slope abuts against the bottom surface of the conical pin head.

[0017] By adopting the above technical solution, the setting of the elastic limiting pad at the second groove of the mounting groove helps to restrict the position of the mounting pin in the mounting groove, reduce the probability that the conical pin head of the mounting pin will slide into the mounting groove in advance during the installation process, affecting the stable connection between the board and the keel, and ensure that the second nail body can carry the mounting pin and be stably inserted into the board.

[0018] Optionally, the bottom of the second groove has a third guide slope, the inclination angle of which is 20 to 40°.

[0019] By adopting the above technical solution, the setting of the third guide slope at the bottom of the second groove helps to guide the sliding process of the installation pin pushing the elastic limiting pad in the installation groove, so that when the tapered pin head of the installation pin is subjected to a force in the direction of the first nail body, it can deform and slide into the first groove, so that the tapered pin head can slide into the installation groove, and the double-headed non-marking nail can stably connect the plate and the keel.

[0020] Optionally, the non-marking nail body is provided with anti-loosening barbs at circumferential intervals at the mounting groove, and the inclination direction of the anti-loosening barbs is consistent with the insertion direction of the mounting pin.

[0021] By adopting the above technical solution, anti-loosening barbs are set in the mounting groove, which can effectively reduce the probability of the mounting pin coming out of the mounting groove during the installation process, while ensuring the stability and reliability of the mounting pin.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. A double-headed traceless nail, comprising an installation groove on the nail body for sliding arrangement of the mounting pin; during installation, the nail body is first connected to the keel on the side away from the installation groove; then, a sheet material with an elastomer layer is hammered into the side of the nail body where the mounting pin is installed; after the keel and the sheet material are connected, the top of the tapered head of the mounting pin is exposed on the surface of the sheet material; finally, the tapered head is hammered into the installation groove, thereby expanding the nail body and improving the stability of the connection between the keel and the sheet material; simultaneously, after the tapered head retracts into the installation groove, the elastomer layer of the sheet material closes, preventing the nail body from being exposed on the surface, effectively improving the aesthetics of the connection between the keel and the sheet material with the elastomer layer.

[0024] 2. The deformation groove on the second nail body helps the second nail body to deform, reducing the probability of nail body breakage;

[0025] 3. The anti-loosening barbs help to limit the installation pins and reduce the probability of the installation pins coming out of the mounting slot. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the double-headed traceless nail in Embodiment 1 of this application.

[0027] Figure 2 This is a cross-sectional schematic diagram of the non-marking nail body and the mounting pin in Embodiment 1 of this application.

[0028] Figure 3 This is a schematic diagram of the deformation groove in Embodiment 1 of this application.

[0029] Figure 4This is a schematic diagram of the anti-barb structure of Embodiment 1 of this application.

[0030] Figure 5 This is a schematic diagram of the structure of the double-headed traceless nail in Embodiment 2 of this application.

[0031] Figure 6 This is a cross-sectional schematic diagram of the non-marking nail body and the mounting pin in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Markless nail body; 11. Mounting groove; 111. First guide slope; 112. First groove; 113. Second groove; 1131. Second guide slope; 1132. Third guide slope; 12. First nail body; 13. Second nail body; 131. Deformation groove; 132. Deformation part; 133. Guide cone surface; 14. Mounting boss; 15. Anti-loosening barb; 16. Elastic limiting pad; 2. Mounting pin; 21. Sliding rod; 211. Abutment surface; 22. Conical pin head; 221. First cone surface; 222. Second cone surface. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses a double-ended, non-marking nail.

[0035] Example 1

[0036] Reference Figure 1 and Figure 2 A double-ended non-marking nail includes a non-marking nail body 1 and a mounting pin 2 slidably mounted on the non-marking nail body 1. The non-marking nail body 1 and the mounting pin 2 are arranged coaxially. The non-marking nail body 1 has a mounting groove 11 for sliding the mounting pin 2.

[0037] Reference Figure 1 and Figure 2 The non-marking nail body 1 includes a first nail body 12 and a second nail body 13, with a mounting groove 11 extending through to the side of the second nail body 13 away from the first nail body 12. The side of the first nail body 12 away from the second nail body 13 has a conical surface extending away from the second nail body 13. To improve the stability of the connection between the first nail body 12 and the keel, the non-marking nail body 1 also has a mounting boss 14 on the outer side wall of the first nail body 12 near the second nail body 13. The cross-section of the mounting boss 14 can be circular, rectangular, hexagonal, staggered, or triangular, so that when the cross-section of the mounting boss 14 is circular, the non-marking nail body 1 can be driven into the keel; when the cross-section of the mounting boss 14 is irregular, the non-marking nail body 1 can be screwed into the keel. In this embodiment, the cross-section of the mounting boss 14 is hexagonal, and the non-marking nail body 1 has an external thread structure on the outer side wall of the first nail body 12.

[0038] Reference Figure 2 The mounting pin 2 is inserted into the mounting groove 11 from the second nail body 13, and the depth of the mounting groove 11 is greater than the length of the mounting pin 2. The mounting pin 2 includes a sliding rod 21 slidably installed in the mounting groove 11 and a tapered pin head 22 connected to the side of the sliding rod 21 away from the mounting groove 11. The outer diameter of the tapered pin head 22 is greater than the outer diameter of the sliding rod 21. In order to enable the double-ended non-marking nail to be smoothly inserted into the plate with the elastomeric layer, the non-marking nail body 1 has a guide cone surface 133 on the side of the second nail body 13 away from the first nail body 12. The tapered pin head 22 has a first cone surface 221 extending in the direction of the sliding rod 21 and a second cone surface 222 extending in the direction away from the sliding rod 21, wherein the guide cone surface 133 and the second cone surface 222 have the same inclination angle.

[0039] Reference Figure 2 In order to enable the tapered pin head 22 of the mounting pin 2 to slide smoothly into the mounting groove 11 during subsequent installation, the non-marking pin body 1 has a first guide slope 111 at the mounting groove 11 for cooperating with the first tapered surface 221 of the bottom surface of the tapered pin head 22. The inclination direction of the first guide slope 111 is consistent with the direction in which the mounting pin 2 is inserted into the mounting groove 11.

[0040] Reference Figure 2 To reduce the probability that the tapered pin head 22 of the mounting pin 2 will prematurely slip into the mounting groove 11 when inserted into the sheet metal with the elastomeric layer, a limiting structure is provided between the mounting pin 2 and the mounting groove 11. The mounting groove 11 includes a first groove 112 and a second groove 113 in sequence along the direction towards the tapered pin head 22. The diameter of the hole in the first groove 112 is smaller than the diameter of the hole in the second groove 113. The bottom surface of the second groove 113 has a second guide slope 1131. The mounting pin 2 has an abutment surface 211 at the sliding rod 21 that mates with the second guide slope 1131. When the second guide slope 1131 abuts with the abutment surface 211 of the sliding rod 21, the first guide slope 111 of the non-marking nail body 1 abuts with the first tapered surface 221 of the bottom surface of the tapered pin head 22. The second guide slope 1131 has an inclination angle of 10-60°, which allows it to initially limit the position of the mounting pin 2 within the mounting groove 11, while also guiding the subsequent sliding of the mounting pin 2 within the mounting groove 11. In this embodiment, the inclination angle of the second guide slope 1131 is 30°.

[0041] Reference Figure 1 and Figure 3To facilitate the smooth deformation of the non-marking nail body 1 when the mounting pin 2 slides within the mounting groove 11, the non-marking nail body 1 is provided with deformation grooves 131 evenly distributed circumferentially at the second nail body 13. The deformation grooves 131 penetrate the second nail body 13, dividing it into four deformable portions 132. In this embodiment, the second nail body 13 has four deformation grooves 131 spaced apart circumferentially.

[0042] Reference Figure 4 In order to reduce the probability of the mounting pin 2 coming out of the mounting groove 11, the non-marking pin body 1 is provided with anti-loosening barbs 15 at circumferential intervals at the mounting groove 11, and the tilting direction of the anti-loosening barbs 15 is consistent with the direction in which the mounting pin 2 is inserted into the mounting groove 11.

[0043] Reference Figures 1 to 4 The implementation principle of a double-headed traceless nail in this application embodiment is as follows: During the installation process of the double-headed traceless nail, the first nail body 12 of the traceless nail body 1 is first fixed to the keel by tapping the mounting boss 14 or by threading. Then, the plate with the elastic layer is tapped into the nail body of the traceless nail body 1. During this process, the cooperation between the second nail body 13 and the conical pin head 22 of the mounting pin 2, and the cooperation between the second guide slope 1131 and the abutment surface 211 on the sliding rod 21, allows the double-headed traceless nail to be smoothly inserted into the plate with the elastic layer. When the second nail body 13 is fully inserted into the plate with the elastic layer, the top of the conical pin head 22 is exposed on the surface of the elastic layer of the plate. Finally, by tapping the mounting pin 2 into the mounting groove 11, the second nail body 13 is opened, stably connecting the keel and the plate with the elastic layer. At the same time, the elastic layer closes, so that there are no exposed nail bodies on the surface of the plate, effectively improving the aesthetics of the plate after using the double-headed traceless nail.

[0044] Example 2

[0045] In this embodiment, the double-headed traceless nail is identical to the double-headed traceless nail in Embodiment 1, except for the limiting structure between the mounting groove 11 and the sliding rod 21 of the mounting pin 2, the shape of the mounting boss, and the structure of the first nail body.

[0046] Reference Figure 5 and Figure 6The non-marking nail body 1 includes a first nail body 12, a second nail body 13, and a mounting boss 14 connected to the side of the first nail body 12 near the second nail body 13. The mounting boss 14 has a circular cross-section. The non-marking nail body 1 also has a mounting groove 11 for sliding the mounting pin 2. The mounting groove 11 includes a first groove 112 and a second groove 113 sequentially along the direction towards the conical pin head 22. The diameter of the first groove 112 is smaller than the diameter of the second groove 113. An elastic limiting pad 16 is provided at the bottom of the second groove 113 in the mounting groove 11. When the bottom of the sliding rod 21 abuts against the elastic limiting pad 16, the first guide slope 111 abuts against the bottom surface of the conical pin head 22. To facilitate the deformation of the elastic limiting pad 16 when the installation pin 2 pushes it to slide towards the first pin body 12, the bottom of the second groove 113 has a third guide slope 1132, and the inclination angle of the third guide slope 1132 is 20-40°. In this embodiment, the inclination angle of the third guide slope 1132 is 30°.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-ended, non-marking nail, characterized in that, The device includes a non-marking nail body (1) and a mounting pin (2) slidably mounted on the non-marking nail body (1). The non-marking nail body (1) and the mounting pin (2) are arranged coaxially. The non-marking nail body (1) has a mounting groove (11) for the mounting pin (2) to slide. The mounting pin (2) includes a sliding rod (21) slidably mounted in the mounting groove (11) and a tapered pin head (22) connected to the side of the sliding rod (21) away from the mounting groove (11). The outer diameter of the tapered pin head (22) is larger than the outer diameter of the sliding rod (21) and the depth of the mounting groove (11) is greater than the length of the mounting pin (2). The non-marking nail body (1) has a first guide slope (111) at the mounting groove (11) for engaging with the bottom surface of the tapered pin head (22). The outer side wall of the non-marking nail body (1) is also provided with a mounting boss (14).

2. The double-ended traceless nail according to claim 1, characterized in that, The non-marking nail body (1) includes a first nail body (12) and a second nail body (13). The mounting boss (14) is arranged on the side of the first nail body (12) close to the second nail body (13). The second nail body (13) is provided with deformation grooves (131) spaced apart in the circumferential direction.

3. The double-ended traceless nail according to claim 2, characterized in that, The non-marking nail body (1) has a guide cone surface (133) on the side of the second nail body (13) away from the first nail body (12). The conical pin head (22) has a first cone surface (221) that cooperates with the first guide inclined surface (111) and a second cone surface (222) that extends in the direction away from the sliding rod (21). The guide cone surface (133) and the second cone surface (222) have the same inclination angle.

4. The double-ended traceless nail according to claim 1, characterized in that, The mounting groove (11) includes a first groove (112) and a second groove (113) in sequence along the direction toward the conical pin head (22). The diameter of the first groove (112) is smaller than the diameter of the second groove (113). The bottom surface of the second groove (113) has a second guide slope (1131). The sliding rod (21) has an abutment surface (211) that cooperates with the second guide slope (1131). When the second guide slope (1131) abuts with the abutment surface (211), the first guide slope (111) abuts with the bottom surface of the conical pin head (22).

5. A double-ended, non-marking nail according to claim 4, characterized in that, The inclination angle of the second guide slope (1131) is 10 to 60°.

6. A double-ended, non-marking nail according to claim 1, characterized in that, The mounting groove (11) includes a first groove (112) and a second groove (113) in sequence along the direction toward the conical pin head (22). The diameter of the first groove (112) is smaller than the diameter of the second groove (113). An elastic limiting pad (16) is provided at the bottom of the second groove (113) of the mounting groove (11). When the bottom of the sliding rod (21) abuts against the elastic limiting pad (16), the first guide slope (111) abuts against the bottom surface of the conical pin head (22).

7. A double-ended, non-marking nail according to claim 6, characterized in that, The bottom of the second groove (113) has a third guide slope (1132), and the inclination angle of the third guide slope (1132) is 20 to 40°.

8. A double-ended, non-marking nail according to claim 1, characterized in that, The non-marking nail body (1) is provided with anti-loosening barbs (15) at circumferential intervals at the mounting groove (11), and the inclination direction of the anti-loosening barbs (15) is consistent with the insertion direction of the mounting pin (2).

9. A double-ended, non-marking nail according to claim 1, characterized in that, The cross-section of the mounting boss (14) can be circular, rectangular, hexagonal, plum blossom-shaped, or triangular.

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