Special-shaped connector

Abstract

The utility model discloses a special-shaped joint, which belongs to the technical field of building security and protection, and comprises a screw, a tie plate, a connecting pipe, an expansion pipe and an expansion head, the tie plate is provided with a first round hole matched with the screw, the screw penetrates through the first round hole to be screwed at one end of the connecting pipe, the other end of the connecting pipe is provided with the expansion head, and the expansion head is connected with the connecting pipe. The connecting pipe is arranged in the expansion pipe in a penetrating mode, a plurality of expansion pieces are arranged at the end, facing the expansion head, of the expansion pipe, the tying disc is provided with a plurality of tying holes, the outer diameter of a nut of the screw is larger than the inner diameter of the first round hole, the screw is provided with a first through hole in the axial direction, and the expansion head is provided with a second through hole in the axial direction. The tie plate is provided with a plurality of tie holes, a plurality of tie points can be connected, glue can be injected into the screw through hole, the glue can reach the connecting pipe and the expansion head through hole to the outer side of the special-shaped connector, the space between the special-shaped connector and the hole wall is added, and the connecting strength of the special-shaped connector is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of building security, and particularly refers to a special-shaped joint. Background Art

[0002] Generally speaking, the existing expansion screws include a screw and an expansion tube. Before use, it is necessary to first drill a hole in the wall or ground, and the hole size is slightly larger than the outer diameter of the expansion tube. Secondly, the expansion tube is placed into the hole in the wall, and then the screw is screwed into the inside of the expansion tube by using a tool to make the expansion tube expand, so that the screw and the expansion tube are stably held in the hole in the wall. However, generally, only one nut exposed outside the existing expansion screw can be used as a pulling point. When multiple pulling points are required, a transfer piece is needed, and the process is cumbersome. Moreover, the existing expansion screws cannot be injected with glue to enhance the connection force between the expansion screws and the wall surface. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a special-shaped joint to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A special-shaped joint includes a screw, a tie plate, a connecting pipe, an expansion tube and an expansion head. The tie plate is provided with a first round hole adapted to the screw. The screw passes through the first round hole and is screwed to one end of the connecting pipe. The other end of the connecting pipe is provided with an expansion head. The connecting pipe is arranged in the expansion tube. One end of the expansion tube facing the expansion head is provided with a plurality of expansion pieces. The tie plate is provided with a plurality of tie holes. The outer diameter of the nut of the screw is larger than the inner diameter of the first round hole. The screw is provided with a first through hole along the axial direction, and the expansion head is provided with a second through hole along the axial direction.

[0006] Preferably, a protection tube is sleeved on one end of the expansion tube facing the tie plate, and the outer diameter of the protection tube is larger than the inner diameter of the first round hole.

[0007] Preferably, the expansion head is screwed to the connecting pipe.

[0008] Preferably, the first round hole is a flared through hole, the smaller opening of the flared through hole is arranged on the side facing the expansion head, an expansion ring is arranged in the first round hole, the expansion ring is adapted to the first round hole, a second round hole adapted to the screw is arranged in the expansion ring, and the outer diameter of the nail cap of the screw is larger than the inner diameter of the second round hole.

[0009] Preferably, a plurality of friction pieces are arranged between the expansion ring and the first round hole.

[0010] Beneficial effects

[0011] 1. The tie plate is provided with a number of tie holes, which can provide multiple tie points.

[0012] 2. After the special-shaped joint is installed, glue can be injected into the screw through-hole. The glue can reach the connecting pipe and the expansion head through-hole, and even to the outside of the special-shaped joint, filling the space between the special-shaped joint and the hole wall to enhance the connection strength of the special-shaped joint. Description of the drawings

[0013] Figure 1 is a perspective view of the embodiment;

[0014] Figure 2 is an exploded view of the embodiment;

[0015] Figure 3 is a schematic view of the expansion head;

[0016] Figure 4 is a schematic view of the screw.

[0017] Description of the reference numerals: 1 - screw; 2 - tie plate; 21 - tie hole; 3 - connecting pipe; 4 - expansion pipe; 5 - expansion head; 51 - second through-hole; 6 - expansion ring; 61 - friction plate; 7 - expansion piece; 8 - first round hole; 9 - second round hole; 10 - protection pipe; 11 - first through-hole. Detailed implementation manners

[0018] The technical solutions of the present utility model will be described below in conjunction with the drawings and embodiments.

[0019] Embodiment: Refer to Figures 1 to 4A special-shaped joint includes a screw 1, a tie plate 2, a connecting pipe 3, an expansion pipe 4 and an expansion head 5. The tie plate 2 is provided with a first circular hole 8 adapted to the screw 1. The screw 1 passes through the first circular hole 8 and is screwed to one end of the connecting pipe 3. The other end of the connecting pipe 3 is provided with an expansion head 5. The connecting pipe 3 is inserted into the expansion pipe 4. The end of the expansion pipe 4 facing the expansion head 5 is provided with a plurality of expansion sheets 7. The tie plate 2 is provided with a plurality of tie holes 21. The outer diameter of the nut of the screw 1 is larger than the inner diameter of the first circular hole 8. The screw 1 is provided with a first through hole 11 along the axial direction. The expansion head 5 is provided with a second through hole 11 along the axial direction. Hole 51. When in use, first pass the rope through the tie hole 21 in advance, insert the special-shaped joint into the hole opened on the wall or the ground, turn the screw 1, and when the screw 1 is inserted into the connecting pipe 3, pull the connecting pipe 3 outward, and the connecting pipe pulls the expansion head 5 outward, and the expansion head 5 opens the expansion sheet 7. The expansion sheet 7 rests on the inner wall of the hole, and the friction force generated prevents the special-shaped joint from being pulled out by external force. When the special-shaped joint is fixed, glue is injected into the connecting pipe 3 along the first through hole 11. After the glue fills the connecting pipe 3, it continues to be injected into the second through hole 51 until it overflows from the end of the expansion head 5 and fills the gap between the special-shaped joint and the hole wall, thereby enhancing the connection strength between the special-shaped joint and the wall or the ground.

[0020] Specifically, a protective tube 10 is sleeved on one end of the expansion tube 4 facing the tie plate 2, and the outer diameter of the protective tube 10 is larger than the inner diameter of the first circular hole 8. The protective tube 10 limits the expansion sheet 7 to start to expand at one end of the protective tube 10 at the expansion head 5, and the outer diameter of the protective tube 10 is larger than the outer diameter of the expansion tube 4, so that there is more space between the expansion tube 4 and the hole wall to accommodate glue, thereby making the combination between the special-shaped joint and the ground or wall tighter and the pulling force greater.

[0021] Specifically, the expansion head 5 is screwed to the connecting pipe 3, and the connecting pipe 3 is an internally threaded through pipe. One end of the expansion head 5 is provided with an external thread, which is more convenient for processing. When in use, the expansion head 5 only needs to be screwed into one end of the connecting pipe 3, which is convenient and quick.

[0022] Specifically, the first circular hole 8 is a trumpet-shaped through hole, and the smaller opening of the trumpet-shaped through hole is arranged on the side facing the expansion head 5. An expansion ring 6 is arranged in the first circular hole 8, and the expansion ring 6 is adapted to the first circular hole 8. A second circular hole 9 adapted to the screw 1 is arranged in the expansion ring 6. The outer diameter of the nail cap of the screw 1 is larger than the inner diameter of the second circular hole 9. By setting the expansion ring 6, the nut of the screw 1 does not need to be made larger than the diameter of the first circular hole 8, which is more convenient to process and use.

[0023] Specifically, a plurality of friction plates 61 are provided between the expansion ring 6 and the first circular hole 8 to increase the friction force between the expansion ring 6 and the first circular hole 8 .

[0024] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The above has described in detail an embodiment of the present utility model, with the focus on an interference fit socket and spigot connection structure with a rigid plug and a flexible socket, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A special-shaped joint, comprising a screw (1), a tie plate (2), a connecting pipe (3), an expansion pipe (4) and an expansion head (5), characterized in that: The tie plate (2) is provided with a first circular hole (8) adapted to the screw (1); the screw (1) passes through the first circular hole (8) and is screwed to one end of the connecting pipe (3); the other end of the connecting pipe (3) is provided with an expansion head (5); the connecting pipe (3) is inserted into the expansion pipe (4); one end of the expansion pipe (4) facing the expansion head (5) is provided with a plurality of expansion sheets (7); the tie plate (2) is provided with a plurality of tie holes (21); the outer diameter of the nut of the screw (1) is larger than the inner diameter of the first circular hole (8); the screw (1) is provided with a first through hole (11) along the axial direction; and the expansion head (5) is provided with a second through hole (51) along the axial direction.

2. A special-shaped connector according to claim 1, characterized in that: A protective tube (10) is sleeved on one end of the expansion tube (4) facing the tie plate (2), and the outer diameter of the protective tube (10) is greater than the inner diameter of the first circular hole (8).

3. The special-shaped connector according to claim 1, characterized in that: The expansion head (5) is threadedly connected to the connecting pipe (3).

4. The special-shaped connector according to claim 1, characterized in that: The first circular hole (8) is a trumpet-shaped through hole, the smaller opening of the trumpet-shaped through hole is arranged on the side facing the expansion head (5), an expansion ring (6) is arranged in the first circular hole (8), the expansion ring (6) is adapted to the first circular hole (8), a second circular hole (9) adapted to the screw (1) is arranged in the expansion ring (6), and the outer diameter of the nail head of the screw (1) is larger than the inner diameter of the second circular hole (9).

5. A special-shaped connector according to claim 4, characterized in that: A plurality of friction plates (61) are provided between the expansion ring (6) and the first circular hole (8).

Images