Universal rebar coupler and assembly method thereof

Abstract

A universal rebar coupler includes a first male connector, a second male connector, a connector, a nut and a sleeve. The connector includes a female connector and a third male connector, and the first male connector is fixed to the screw hole of the female connector. The second male connector passes through the through hole of the nut. The third male connector is fixed to the through hole of the sleeve. The sleeve is rotated until the second male connector is fixed to the through hole of the sleeve and the second end of the sleeve abuts against the nut. The wrench locks the female connector to the first male connector. In this way, no matter whether the pitch of the external and internal threads is in a multiple relationship, no matter whether the mouth of the external thread is aligned with the internal thread, the first male connector can completely enter the screw hole of the female connector, and the second male connector can completely enter the through hole of the sleeve, without the need for forced locking to prevent damage to the external and internal threads.

Description

[Technical Field]

[0001] This invention relates to a rebar connector and its assembly method, particularly a universal rebar connector for connecting two rebars and its assembly method. [Previous Technology]

[0002] In building and civil engineering, both reinforced concrete (RC) and steel reinforced concrete (SRC) structures require steel reinforcement. To facilitate construction, pre-fabricated steel bars are typically cut to specific lengths at a processing plant before being transported to the construction site. Because the types of buildings vary, specific methods are often used to splice multiple steel bars to extend their lengths to meet construction requirements, while also considering the strength of the connections. Using steel bar connectors to connect two steel bars is one of the most common methods in the industry.

[0003] Conventional rebar splicers connect two rebars in the following two ways: First, a male splice is disposed at the end of one of the two rebars and has an external thread, and a female splice is disposed at the end of the other rebar and has a threaded hole with an internal thread, and the male splice is fixed to the threaded hole; Second, a first male splice is disposed at the end of one of the two rebars and has an external thread, and a second male splice is disposed at the end of the other rebar and has an external thread, the first male splice is fixed to a first end of a through hole of a female splice, and the second male splice is fixed to a second end of a through hole of the female splice, the through hole having an internal thread.

[0004] However, the pitch of the internal thread of the female connector's screw hole or through hole is not necessarily a multiple of the pitch of the male connector's external thread. Furthermore, during the locking process, it is impossible to know whether the teeth of the male connector's external thread are correctly aligned with the internal thread of the female connector's screw hole or through hole. This causes the male connector to move further into the female connector's screw hole or through hole, resulting in a tighter engagement between the male connector's external thread and the female connector's screw hole or through hole's internal thread. In some cases, the male connector may not even be fully inserted into the female connector's screw hole or through hole before the male connector's external thread and the female connector's screw hole or through hole's internal thread are completely jammed. It should be noted that if the male connector is not fully inserted into the screw hole or through hole of the female connector, the structural strength of the rebar connector will be reduced. In order to make the male connector fully inserted into the screw hole or through hole of the female connector, the worker will force it in, and continue to move the male connector into the screw hole or through hole of the female connector, which will damage the external thread of the male connector and the internal thread of the screw hole or through hole of the female connector. [Summary of the Invention]

[0005] The main objective of this invention is to provide a universal rebar connector and its assembly method. Regardless of whether the pitch of the external thread and the pitch of the internal thread are multiples of each other, and regardless of whether the teeth of the external thread are aligned with the internal thread, the first male connector can be fully inserted into the threaded hole of the female connector, and the second male connector can be fully inserted into the through hole of the sleeve.

[0006] To achieve the aforementioned objective, the present invention provides a universal rebar connector for connecting two rebars. The universal rebar connector includes a first male connector, a second male connector, a connecting member, a nut, and a sleeve. The first end of the first male connector is located at the end of one of the rebars, and the first male connector has an external thread. The first end of the second male connector is located at the end of the other rebar, and the second male connector also has an external thread. The connecting member includes a female connector and a third male connector. The female connector is polygonal and has a threaded hole with an internal thread. The first male connector is fixed to the threaded hole such that the end face of a second end of the first male connector abuts against the innermost side of the threaded hole. The third male connector has an external thread. The nut has a through hole with internal threads, through which the second male connector passes, and the nut moves along the second male connector to a second end of the second male connector. The sleeve has a through hole with internal threads, and the third male connector is fixed to a first end of the through hole, and a first end of the sleeve abuts against the female connector. The sleeve is rotated so that it moves along the second male connector toward the nut until the second male connector is fixed at a second end of the through hole of the sleeve, and the first end of the sleeve moves away from the female connector, while the second end of the sleeve abuts against the nut. At this time, the third male connector rotates with the sleeve, and the female connector rotates with the third male connector, so that the female connector moves along the first male connector toward the second male connector, and the end face of the second end of the first male connector moves away from the innermost side of the screw hole, while the third male connector moves along the through hole toward the second male connector. In this process, a wrench drives the female connector to rotate, causing the female connector to move away from the sleeve along the first male connector, and the third male connector to move away from the second male connector along the through hole, until the end face of the second end of the first male connector abuts against the innermost side of the screw hole, so that the female connector is locked to the first male connector, and one end of the third male connector is still located in the through hole.

[0007] In some embodiments, the first end of the first male connector is welded to the end of one of the reinforcing bars, and the first end of the second male connector is welded to the end of the other of the reinforcing bars.

[0008] In some embodiments, the first end of the first male connector is friction-welded to the end of one of the reinforcing bars, and the first end of the second male connector is friction-welded to the end of the other of the reinforcing bars.

[0009] In some embodiments, the female connector is hexagonal.

[0010] To achieve the aforementioned objective, the present invention provides an assembly method for a universal rebar connector, comprising the following steps: placing a first end of a first male connector at the end of one of two rebars, and placing a first end of a second male connector at the end of the other rebar, wherein the first male connector has an external thread, and the second male connector has an external thread; fixing the first male connector to a threaded hole in a female connector of a connector, such that the end face of a second end of the first male connector abuts against... The second male connector is passed through a through hole of a nut, with the nut moving along the second male connector to a second end of the male connector. The female connector is polygonal, the screw hole has internal threads, and the through hole also has internal threads. A third male connector is fixed to a first end of a through hole in a sleeve, with the first end of the sleeve abutting against the female connector. The third male connector has external threads, and the through hole has internal threads. The sleeve is rotated so that the sleeve moves along... The second male connector moves closer to the nut until it is fixed at a second end of the through hole in the sleeve, and the first end of the sleeve moves away from the female connector, while the second end of the sleeve abuts against the nut. At this time, the third male connector rotates with the sleeve, and the female connector rotates with the third male connector, causing the female connector to move along the first male connector towards the second male connector, and the end face of the second end of the first male connector moves away from the innermost side of the threaded hole, and the third male connector... The connector moves along the through hole toward the second male connector; and a wrench drives the female connector to rotate, causing the female connector to move away from the sleeve along the first male connector, and the third male connector moves along the through hole away from the second male connector, until the end face of the second end of the first male connector abuts against the innermost side of the screw hole, so that the female connector is locked to the first male connector, and one end of the third male connector is still located in the through hole, to obtain a universal rebar connector.

[0011] In some embodiments, the first end of the first male connector is welded to the end of one of the reinforcing bars, and the first end of the second male connector is welded to the end of the other of the reinforcing bars.

[0012] In some embodiments, the first end of the first male connector is friction-welded to the end of one of the reinforcing bars, and the first end of the second male connector is friction-welded to the end of the other of the reinforcing bars.

[0013] In some embodiments, the female connector is hexagonal.

[0014] The advantage of this invention is that, regardless of whether the pitch of the external thread of the first male connector is a multiple of the pitch of the internal thread of the screw hole of the female connector, regardless of whether the teeth of the external thread of the first male connector are aligned with the internal thread of the screw hole of the female connector, regardless of whether the pitch of the external thread of the third male connector and the external thread of the second male connector are a multiple of the pitch of the internal thread of the through hole of the sleeve, and regardless of whether the teeth of the external thread of the third male connector and the external thread of the second male connector are aligned with the internal thread of the through hole of the sleeve, the first male connector can completely enter the screw hole of the female connector, and the second male connector can completely enter the through hole of the sleeve. This ensures that the universal rebar connector of this invention maintains a certain structural strength, completely eliminating the need for forced locking, and preventing damage to the external thread of the first male connector, the internal thread of the screw hole of the female connector, the external thread of the third male connector, the internal thread of the through hole of the sleeve, and the external thread of the second male connector.

Implementation Method

[0015] The embodiments of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement them after reading this specification.

[0016] Figure 1 is a combined cross-sectional view of a first embodiment of the universal rebar connector of the present invention. Figure 2 is an exploded cross-sectional view of the first embodiment of the universal rebar connector of the present invention. Figure 3 is a top view of the connector 30 of the present invention. As shown in Figures 1, 2 and 3, the present invention provides a universal rebar connector for connecting two rebars 100 and 100A. The universal rebar connector includes a first male connector 10, a second male connector 20, a connector 30, a nut 40 and a sleeve 50. A first end of the first male connector 10 is disposed at the end of the rebar 100, and the first male connector 10 has external threads. A first end of the second male connector 20 is disposed at the end of the rebar 100A, and the second male connector 20 has external threads. The connector 30 includes a female connector 31 and a third male connector 32. The female connector 31 is polygonal and has a threaded hole 311 with internal threads. A first male connector 10 is fixed to the threaded hole 311, such that the end face of a second end of the first male connector 10 abuts against the innermost side of the threaded hole 311. The third male connector 32 has external threads. The nut 40 has a through hole 41 with internal threads. A second male connector 20 passes through the through hole 41, and the nut 40 moves along the second male connector 20 to a second end of the second male connector 20. The sleeve 50 has a through hole 51 with internal threads. The third male connector 32 is fixed to a first end of the through hole 51, and a first end of the sleeve 50 abuts against the female connector 31. Rotate the sleeve 50 so that it moves along the second male connector 20 toward the nut 40 until the second male connector 20 is fixed at the second end of the through hole 51 of the sleeve 50, and the first end of the sleeve 50 moves away from the female connector 31, and the second end of the sleeve 50 abuts against the nut 40. At this time, the third male connector 32 rotates with the sleeve 50, and the female connector 31 rotates with the third male connector 32, so that the female connector 31 moves along the first male connector 10 toward the second male connector 20, and the end face of the second end of the first male connector 10 moves away from the innermost side of the screw hole 311, and the third male connector 32 moves along the through hole 51 toward the second male connector 20. A wrench (not shown) drives the female connector 31 to rotate, causing the female connector 31 to move away from the sleeve 50 along the first male connector 10, and the third male connector 32 to move away from the second male connector 20 along the through hole 51, until the end face of the second end of the first male connector 10 abuts against the innermost side of the screw hole 311, so that the female connector 31 is locked to the first male connector 10, and one end of the third male connector 32 is still located in the through hole 51.

[0017] Figure 4 is a flowchart of the assembly method of the universal rebar connector of the present invention. Figure 5 is a schematic diagram of step S10 of the assembly method of the universal rebar connector of the present invention. Figure 6 is a schematic diagram of step S20 of the assembly method of the universal rebar connector of the present invention. Figure 7 is a schematic diagram of step S30 of the assembly method of the universal rebar connector of the present invention. Figure 8 is a schematic diagram of step S40 of the assembly method of the universal rebar connector of the present invention. Figure 9 is a schematic diagram of step S50 of the assembly method of the universal rebar connector of the present invention. The present invention provides an assembly method of a universal rebar connector, comprising the following steps:

[0018] Step S10, as shown in Figures 4 and 5, involves placing a first end of a first male connector 10 at the end of the reinforcing bar 100, and placing a first end of a second male connector 20 at the end of the reinforcing bar 100A. The first male connector 10 has an external thread, and the second male connector 20 also has an external thread.

[0019] Step S20, as shown in Figures 4 and 6, fix the first male connector 10 to a screw hole 311 of a female connector 31 of a connector 30, such that the end face of a second end of the first male connector 10 abuts against the innermost side of the screw hole 311. Pass the second male connector 20 through a through hole 41 of a nut 40, and move the nut 40 along the second male connector 20 to a second end of the second male connector 20. The female connector 31 is polygonal, the screw hole 311 has internal threads, and the through hole 41 has internal threads.

[0020] In step S30, as shown in Figures 4 and 7, a third male connector 32 of the connector 30 is fixed to a first end of a through hole 51 of a sleeve 50, and the first end of the sleeve 50 abuts against the female connector 31. The third male connector 32 has an external thread, and the through hole 51 has an internal thread.

[0021] Step S40, as shown in Figures 4 and 8, rotate the sleeve 50 so that the sleeve 50 moves along the second male connector 20 towards the nut 40 until the second male connector 20 is fixed at a second end of the through hole 51 of the sleeve 50, and the first end of the sleeve 50 moves away from the female connector 31, and the second end of the sleeve 50 abuts against the nut 40. At this time, the third male connector 32 rotates with the sleeve 50, and the female connector 31 rotates with the third male connector 32, so that the female connector 31 moves along the first male connector 10 towards the second male connector 20, and the end face of the second end of the first male connector 10 moves away from the innermost side of the screw hole 311, and the third male connector 32 moves along the through hole 51 towards the second male connector 20.

[0022] Step S50, as shown in Figures 4 and 9, a wrench (not shown) drives the female connector 31 to rotate, causing the female connector 31 to move away from the sleeve 50 along the first male connector 10, and the third male connector 32 to move away from the second male connector 20 along the through hole 51, until the end face of the second end of the first male connector 10 abuts against the innermost side of the screw hole 311, so that the female connector 31 is locked to the first male connector 10, and one end of the third male connector 32 is still located in the through hole 51, so as to obtain a universal rebar connector.

[0023] As shown in Figures 1 and 2, the first end of the first male connector 10 is welded to the end of the reinforcing bar 100, and the first end of the second male connector 20 is welded to the end of the reinforcing bar 100A.

[0024] As shown in Figure 3, in the first embodiment, the female connector 31 is hexagonal.

[0025] Figure 10 is a combined cross-sectional view of a second embodiment of the universal rebar connector of the present invention. Figure 11 is a cutaway cross-sectional view of a second embodiment of the universal rebar connector of the present invention. As shown in Figures 10 and 11, the difference between the second embodiment and the first embodiment is that the first end of the first male connector 10A is friction-welded to the end of the rebar 100, and the first end of the second male connector 20A is friction-welded to the end of the rebar 100A.

[0026] In summary, regardless of whether the pitch of the external threads of the first male connectors 10 and 10A is a multiple of the pitch of the internal threads of the screw holes 311 of the female connector 31, regardless of whether the teeth of the external threads of the first male connectors 10 and 10A are aligned with the internal threads of the screw holes 311 of the female connector 31, regardless of whether the pitch of the external threads of the third male connector 32 and the second male connectors 20 and 20A is a multiple of the pitch of the internal threads of the through holes 51 of the sleeve 50, regardless of whether the external threads of the third male connector 32 and the second male connectors 20 and 20A are aligned with ... sleeve 50, regardless of whether the external threads of the third male connector 32 and the second male connectors 20 and 20A are aligned with the pitch of the internal threads of the sleeve 50, regardless of whether the external threads of the third male connector 32 and the second male connectors 20 and 20A are aligned with the pitch of the internal threads of the sleeve 50, regardless of whether the external threads of the third male connector 32 and the second Whether the threaded teeth are aligned with the internal thread of the through hole 51 of the sleeve 50, the first male connector 10, 10A can be fully inserted into the screw hole 311 of the female connector 31, and the second male connector 20, 20A can be fully inserted into the through hole 51 of the sleeve 50, so that the universal rebar connector of the present invention maintains a certain structural strength, without the need for forced locking, and prevents damage to the external thread of the first male connector 10, the internal thread of the screw hole 311 of the female connector 31, the external thread of the third male connector 32, the internal thread of the through hole 51 of the sleeve 50, and the external thread of the second male connector 20.

[0027] The above description is only for explaining the preferred embodiments of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications or changes made to the present invention under the same inventive spirit should still be included in the scope of protection intended by the present invention. [Simplified Explanation of the Diagram]

[0028] Figure 1 is an assembled cross-sectional view of the first embodiment of the universal rebar connector of the present invention. Figure 2 is an exploded cross-sectional view of the first embodiment of the universal rebar connector of the present invention. Figure 3 is a top view of the connector of the present invention. Figure 4 is a flowchart of the assembly method of the universal rebar connector of the present invention. Figure 5 is a schematic diagram of step S10 of the assembly method of the universal rebar connector of the present invention. Figure 6 is a schematic diagram of step S20 of the assembly method of the universal rebar connector of the present invention. Figure 7 is a schematic diagram of step S30 of the assembly method of the universal rebar connector of the present invention. Figure 8 is a schematic diagram of step S40 of the assembly method of the universal rebar connector of the present invention. Figure 9 is a schematic diagram of step S50 of the assembly method of the universal rebar connector of the present invention. Figure 10 is an assembled cross-sectional view of the second embodiment of the universal rebar connector of the present invention. Figure 11 is an exploded cross-sectional view of the second embodiment of the universal rebar connector of the present invention.

Claims

1. A universal rebar connector for connecting two rebars, the universal rebar connector comprising: A first male connector, the first end of which is disposed at the end of one of the reinforcing bars, the first male connector having external threads; a second male connector, the first end of which is disposed at the end of the other of the reinforcing bars, the second male connector having external threads; a connector including a female connector and a third male connector, the female connector being polygonal and having a threaded hole having internal threads, the first male connector being fixed to the threaded hole such that the end face of a second end of the first male connector abuts against the innermost side of the threaded hole, the third male connector having external threads; a nut having a through hole having internal threads, the second male connector passing through the through hole, and the nut moving along the second male connector to a second end of the second male connector; and a sleeve having a through hole having internal threads, the third male connector being fixed to a first end of the through hole, and a first end of the sleeve abutting against the female connector; Rotating the sleeve causes it to move along the second male connector towards the nut until the second male connector is fixed at a second end of the sleeve's through hole, and the first end of the sleeve moves away from the female connector while the second end of the sleeve abuts against the nut. At this point, the third male connector rotates with the sleeve, and the female connector rotates with the third male connector, causing the female connector to move along the first male connector towards the second male connector, and the end face of the second end of the first male connector moves away from the nut. The innermost side of the screw hole, and the third male connector moves along the through hole toward the second male connector; and wherein a wrench drives the female connector to rotate, causing the female connector to move away from the sleeve along the first male connector, and the third male connector to move away from the second male connector along the through hole, until the end face of the second end of the first male connector abuts against the innermost side of the screw hole, so that the female connector is locked to the first male connector, and one end of the third male connector is still located in the through hole.

2. The universal rebar connector as described in claim 1, wherein, The first end of the first male connector is welded to the end of one of the reinforcing bars, and the first end of the second male connector is welded to the end of the other reinforcing bar.

3. The universal rebar connector as described in claim 1, wherein, The first end of the first male connector is friction-welded to the end of one of the reinforcing bars, and the first end of the second male connector is friction-welded to the end of the other reinforcing bar.

4. The universal rebar connector as described in claim 1, wherein, The female connector is hexagonal in shape.

5. A method for assembling a universal rebar splice, comprising the following steps: placing a first end of a first male splice at the end of one of two rebars, and placing a first end of a second male splice at the end of the other rebar, wherein... The first male connector has an external thread, and the second male connector also has an external thread. The first male connector is fixed to a threaded hole in a female connector of a connector, such that the end face of a second end of the first male connector abuts against the innermost side of the threaded hole. The second male connector is passed through a through hole in a nut, and the nut moves along the second male connector to a second end of the second male connector. The female connector is polygonal, the threaded hole has an internal thread, and the through hole also has an internal thread. A third male connector of the connector is fixed to a first end of a through hole in a sleeve, and the first end of the sleeve abuts against the female connector. The third male connector has an external thread, and the through hole has an internal thread. Rotate the sleeve so that it moves along the second male connector towards the nut until the second male connector is fixed at a second end of the sleeve's through hole, and the first end of the sleeve moves away from the female connector, while the second end of the sleeve abuts against the nut. At this time, the third male connector rotates with the sleeve, and the female connector rotates with the third male connector, so that the female connector moves along the first male connector towards the second male connector, and the end face of the second end of the first male connector moves away from the innermost part of the threaded hole. The third male connector moves along the through hole toward the second male connector; and a wrench drives the female connector to rotate, causing the female connector to move away from the sleeve along the first male connector, and the third male connector moves along the through hole away from the second male connector, until the end face of the second end of the first male connector abuts against the innermost side of the screw hole, so that the female connector is locked to the first male connector, and one end of the third male connector is still located in the through hole, to obtain a universal rebar connector.

6. The assembly method of the universal rebar connector as described in claim 5, wherein, The first end of the first male connector is welded to the end of one of the reinforcing bars, and the first end of the second male connector is welded to the end of the other reinforcing bar.

7. The assembly method of the universal rebar connector as described in claim 5, wherein, The first end of the first male connector is friction-welded to the end of one of the reinforcing bars, and the first end of the second male connector is friction-welded to the end of the other reinforcing bar.

8. The assembly method of the universal rebar connector as described in claim 5, wherein, The female connector is hexagonal in shape.

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