Inverted-cone-shaped expansion nut

Abstract

The utility model discloses an inverted-cone-shaped expansion nut which comprises a nut body, a bolt rod is in threaded connection with the interior of the nut body, one end of the bolt rod is fixedly connected with a head, one end of the nut body is provided with an inverted-cone-shaped assembly, a protection structure is connected with the exterior of the nut body, and an auxiliary block and an installation block are connected with the exterior of the protection structure. A sliding groove is formed in the mounting block, and a self-locking structure is arranged in the auxiliary block. According to the inverted-cone-shaped expansion nut, the nut body, the protection structure, the auxiliary block and the mounting block are arranged, and the expansion part on the surface of the left end of the nut body can be protected through cooperation of the first baffle, the second baffle, the first protection plate and the second protection plate; the inverted-cone-shaped expansion nut prevents deformation of the expansion part caused by vibration, impact or stacking in the transportation process, ensures that the inverted-cone-shaped expansion nut keeps a good working state when arriving at a destination, and can be matched with bolts of the same specification and various models.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, and specifically relates to an inverted conical expansion nut. Background Art

[0002] The inverted conical expansion nut is a commonly used fastener. Its characteristics include that the conical expansion part is made of metal material. When the bolt is tightened, the conical part expands in the hole, thus being firmly fixed. This kind of bolt is made of materials such as stainless steel and carbon steel, and has the characteristics of durability and corrosion resistance. It is easy to install and provides a reliable connection. However, the expansion part of the inverted conical expansion nut does not have a protection structure. When it is bumped during transportation, it is easy to expand. Once the expansion part is deformed, it is difficult to return to the original state, resulting in the inability to reuse the inverted conical expansion nut and increasing the maintenance and replacement costs. Content of the Utility Model

[0003] The purpose of the utility model is to provide an inverted conical expansion nut to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: An inverted conical expansion nut, including a nut body, a bolt rod is threadedly connected inside the nut body, one end of the bolt rod is fixedly connected with a head, an inverted conical component is arranged at one end of the nut body, a protection structure is connected outside the nut body, an auxiliary block and a mounting block are connected outside the protection structure, a chute is opened inside the mounting block, a self-locking structure is arranged inside the auxiliary block, the self-locking structure is lapped with the mounting block, the protection structure includes a first baffle, a second baffle and a second protection plate, a guide rod is rotatably connected above the second protection plate, a first protection plate is fixedly connected outside the guide rod, the auxiliary block is fixedly connected to one side of the first protection plate, and the mounting block is fixedly connected to one side of the second protection plate.

[0005] As a further preference of this technical solution, a plurality of expansion grooves are opened inside the nut body, the auxiliary block is lapped with the mounting block, and threads are opened inside the nut body.

[0006] As a further preference of this technical solution, the first baffle is fixedly connected to the outer surface of the nut body, the second baffle is fixedly connected to the outer surface of the nut body and has a gap with the first baffle.

[0007] As a further preference of this technical solution, the first protection plate is lapped outside the nut body, the second protection plate is lapped outside the nut body, the first protection plate is located between the second baffle and the first baffle, and the second protection plate is located between the second baffle and the first baffle.

[0008] As a further preference of the present technical solution, the self-locking structure includes a moving rod and a ferrule. The ferrule is rotatably connected within the auxiliary block, the moving rod is slidably connected within the auxiliary block, the moving rod is slidably connected within the ferrule, and a positioning plate is fixedly connected to the bottom end of the moving rod.

[0009] As a further preference of the present technical solution, the positioning plate abuts against the mounting block, and a fixed disk is fixedly connected to the outside of the moving rod.

[0010] As a further preference of the present technical solution, a spring is sleeved outside the moving rod, and the fixed disk is connected to the ferrule through the spring.

[0011] The present utility model provides an inverted conical expansion nut, which has the following beneficial effects:

[0012] (1) By providing a nut body, a protection structure, an auxiliary block and a mounting block, the present utility model sleeved the first protection plate and the second protection plate on the surface of the nut body, and the second protection plate is clamped between the first baffle and the second baffle, driving the first protection plate to flip around the guide rod. When the first protection plate flips, it also abuts between the first baffle and the second baffle, and the auxiliary block on the side surface of the first protection plate abuts above the mounting block. Through the cooperation between the first baffle, the second baffle, the first protection plate and the second protection plate, the present inverted conical expansion nut can protect the expanded part on the left end surface of the nut body, prevent the expanded part from deforming due to vibration, impact or stacking pressure during transportation, ensure that the inverted conical expansion nut maintains a good working state when it reaches the destination, reduce the maintenance and replacement costs, and the inverted conical expansion nut can be matched with various models of bolts of the same specification. The protection plates can be removed when the expansion nut is in use.

[0013] (2) By providing a self-locking structure, when a pulling force is applied to the moving rod, it will drive the spring to deform. When the auxiliary block fits with the mounting block and then the moving rod is released, the positioning plate at the bottom end of the moving rod will slide within the chute, drive the moving rod to rotate, and then the positioning plate will abut against the bottom of the mounting block, so as to lock the first protection plate and the second protection plate. Subsequently, it is convenient to disassemble the protection structure, and the protection structure can be recycled as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is a three-dimensional structure diagram of the nut body of the present utility model;

[0016] Figure 3 is a three-dimensional structure diagram of the protection structure of the present utility model;

[0017] Figure 4 Schematic cross-sectional structure diagram of the self-locking structure of the present utility model in three dimensions;

[0018] In the figure: 1, nut body; 2, bolt rod; 3, head; 4, inverted conical component; 5, expansion groove; 6, protection structure; 601, first baffle; 602, second baffle; 603, first protection plate; 604, second protection plate; 605, guide rod; 7, auxiliary block; 8, mounting block; 9, self-locking structure; 901, moving rod; 902, ferrule; 903, positioning plate; 904, fixed disk; 905, spring; 10, chute. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] The present utility model provides a technical solution: As Figure 1 and Figure 4 shown, in this embodiment, an inverted conical expansion nut includes a nut body 1, a bolt rod 2 is threadedly connected inside the nut body 1, one end of the bolt rod 2 is fixedly connected to a head 3, an inverted conical component 4 is provided at one end of the nut body 1, a protection structure 6 is connected to the outside of the nut body 1, an auxiliary block 7 and a mounting block 8 are connected to the outside of the protection structure 6, a chute 10 is opened inside the mounting block 8, a self-locking structure 9 is provided inside the auxiliary block 7, the self-locking structure 9 is lapped with the mounting block 8, the protection structure 6 includes a first baffle 601, a second baffle 602 and a second protection plate 604, a guide rod 605 is rotatably connected above the second protection plate 604, a first protection plate 603 is fixedly connected to the outside of the guide rod 605, the auxiliary block 7 is fixedly connected to one side of the first protection plate 603, and the mounting block 8 is fixedly connected to one side of the second protection plate 604.

[0021] As Figure 1 and Figure 3 shown, a plurality of expansion grooves 5 are opened inside the nut body 1, the auxiliary block 7 is lapped with the mounting block 8, threads are opened inside the nut body 1, the first baffle 601 is fixedly connected to the outer surface of the nut body 1, the second baffle 602 is fixedly connected to the outer surface of the nut body 1 and has a gap with the first baffle 601, the first protection plate 603 is lapped on the outside of the nut body 1, the second protection plate 604 is lapped on the outside of the nut body 1, the first protection plate 603 is located between the second baffle 602 and the first baffle 601, and the second protection plate 604 is located between the second baffle 602 and the first baffle 601.

[0022] By setting the first baffle 601 and the second baffle 602, the first protective plate 603 and the second protective plate 604 are sleeved on the surface of the nut body 1. The second protective plate 604 will be clamped between the first baffle 601 and the second baffle 602, and the first protective plate 603 will also overlap between the first baffle 601 and the second baffle 602 when it is flipped. This enables the first baffle 601 and the second baffle 602 to play a certain limiting role in the positions of the first protective plate 603 and the second protective plate 604, avoiding the phenomenon that the positions of the first protective plate 603 and the second protective plate 604 shift during assembly.

[0023] As Figure 4 shown, the self-locking structure 9 includes a moving rod 901 and a collar 902. The collar 902 is rotatably connected inside the auxiliary block 7, the moving rod 901 is slidably connected inside the auxiliary block 7, the moving rod 901 is slidably connected inside the collar 902. A positioning plate 903 is fixedly connected to the bottom end of the moving rod 901, the positioning plate 903 overlaps with the mounting block 8, a fixed disk 904 is fixedly connected to the outside of the moving rod 901, a spring 905 is sleeved on the outside of the moving rod 901, and the fixed disk 904 is connected to the collar 902 through the spring 905.

[0024] By setting the collar 902 and the spring 905, when a pulling force is applied to the moving rod 901, the fixed disk 904 will drive the spring 905 to deform. When the auxiliary block 7 fits with the mounting block 8 and then the moving rod 901 is released, the moving rod 901 will be reset through the spring 905. This enables the spring 905 to play a certain supporting role in the movement of the moving rod 901, avoiding the phenomenon that the moving rod 901 detaches from the auxiliary block 7 during movement. When driving the moving rod 901 to rotate, the collar 902 will rotate inside the auxiliary block 7 under the influence of the spring 905, enabling the collar 902 to play a certain auxiliary role in the rotation of the moving rod 901, avoiding the phenomenon that the spring 905 gets entangled when the moving rod 901 rotates, and ensuring the smooth rotation of the moving rod 901.

[0025] The present utility model provides an inverted conical expansion nut, and the specific working principle is as follows:

[0026] When the inverted conical expansion nut is being transported, the first protective plate 603 and the second protective plate 604 can be sleeved on the surface of the nut body 1. The second protective plate 604 will be clamped between the first baffle 601 and the second baffle 602, driving the first protective plate 603 to flip around the guide rod 605. When the first protective plate 603 flips, it will also overlap between the first baffle 601 and the second baffle 602. The auxiliary block 7 on the side of the first protective plate 603 will overlap above the mounting block 8. When the first protective plate 603 flips, it exerts a pulling force on the moving rod 901. When the moving rod 901 slides in the auxiliary block 7, it will drive the spring 905 to deform through the fixed disk 904. When the auxiliary block 7 fits with the mounting block 8, the moving rod 901 is released. The moving rod 901 will be reset through the spring 905. The positioning plate 903 at the bottom of the moving rod 901 will slide in the chute 10. When driving the moving rod 901 to rotate, the ferrule 902 will rotate with the moving rod 901 in the auxiliary block 7. After the positioning plate 903 rotates, it will overlap with the bottom of the mounting block 8. When the inverted conical expansion nut needs to be used, the auxiliary block 7 can be separated from the mounting block 8, and then the first protective plate 603 and the second protective plate 604 can be detached from the surface of the nut body 1, enabling the normal use of the inverted conical expansion nut. The disassembled first protective plate 603 and second protective plate 604 can be used in cooperation with other nuts.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inverted conical expansion nut, comprising a nut body (1), characterized in that: The nut body (1) is internally threaded with a bolt rod (2). One end of the bolt rod (2) is fixedly connected with a head (3). One end of the nut body (1) is provided with an inverted conical assembly (4). The outside of the nut body (1) is connected with a protective structure (6). The outside of the protective structure (6) is connected with an auxiliary block (7) and a mounting block (8). A chute (10) is opened in the mounting block (8). A self-locking structure (9) is arranged in the auxiliary block (7). The self-locking structure (9) is lapped with the mounting block (8). The protective structure (6) includes a first baffle (601), a second baffle (602) and a second protective plate (604). A guide rod (605) is rotatably connected above the second protective plate (604). A first protective plate (603) is fixedly connected to the outside of the guide rod (605). The auxiliary block (7) is fixedly connected to one side of the first protective plate (603). The mounting block (8) is fixedly connected to one side of the second protective plate (604).

2. The inverted conical expansion nut according to claim 1, characterized in that: A plurality of expansion grooves (5) are opened in the nut body (1). The auxiliary block (7) is lapped with the mounting block (8). Threads are opened in the nut body (1).

3. The inverted conical expansion nut according to claim 1, characterized in that: The first baffle (601) is fixedly connected to the outer surface of the nut body (1). The second baffle (602) is fixedly connected to the outer surface of the nut body (1) and has a gap with the first baffle (601).

4. A reverse conical expansion nut according to claim 1, characterized in that: The first protective plate (603) is lapped outside the nut body (1). The second protective plate (604) is lapped outside the nut body (1). The first protective plate (603) is located between the second baffle (602) and the first baffle (601). The second protective plate (604) is located between the second baffle (602) and the first baffle (601).

5. The inverted conical expansion nut according to claim 1, wherein: The self-locking structure (9) includes a moving rod (901) and a collar (902). The collar (902) is rotatably connected in the auxiliary block (7). The moving rod (901) is slidably connected in the auxiliary block (7). The moving rod (901) is slidably connected in the collar (902). A positioning plate (903) is fixedly connected to the bottom end of the moving rod (901).

6. The inverted conical expansion nut according to claim 5, characterized in that: The positioning plate (903) is lapped with the mounting block (8). A fixed disk (904) is fixedly connected to the outside of the moving rod (901).

7. The inverted conical expansion nut according to claim 6, wherein: A spring (905) is sleeved outside the moving rod (901). The fixed disk (904) is connected to the collar (902) through the spring (905).

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