TWM576626U - Connection device for axially connecting two sticks - Google Patents

Abstract

The invention provides a connecting device for axially connecting two rods, comprising: a hollow sleeve having an axial through hole, the inner diameter surfaces of the opposite ends respectively having a left internal thread and a right internal thread; the first rod a second rod member having a left outer thread at one end, and a right outer thread at one end thereof; wherein the hollow sleeve is operated in one direction, the first and second rod members are axially adjacent to each other The ground moves until its ends interfere with each other to complete the connection. Wherein, the device may form a non-threaded section in the hollow sleeve, or may further comprise a gasket axially inserted into the through hole of the hollow sleeve and penetrated through the ends of the first and second rods The gasket is used to complete the connection; or the ends of the first and second rods are further formed with a non-threaded protruding end, and the end of the other rod is in contact with each other through the protruding end to complete the connection.

Description

Connecting device for axially connecting two rods

The present invention provides a connecting device for axially connecting two rod members, and more particularly to a connecting device for axially connecting two rod members such as steel bars by means of an axially extending hollow sleeve.

In construction and civil engineering, Reinforced Concrete (RC) and Steel Reinforced Concrete (SRC) are required to be constructed using steel bars. In order to facilitate handling and storage, they will be used in steel manufacturing sites. The manufactured steel bars are cut to a specific length and then transported to the construction site. Because the heights of the buildings vary, it is usually necessary to connect multiple steel bars to extend their lengths, and the strength of the joints must be considered. The connection method mainly includes a ligating connection method, a welding method, a mechanical connection method, and the like.

In the lashing connection method, the traditional artificial lap joint method is most often used, and the lap jointed steel bars are manually bundled and then grouted, so the artificial lap joint method is susceptible to the tying strength due to the tying quality or the grouting procedure. The commonly used methods in the welding method include a resistance welding method and a friction welding method, wherein the electric resistance welding method uses a current generating resistor to thermally decompose the metal of the contact surface of the steel bar, and then pressurizes the steel bar. However, the welding connection method is susceptible to the welding process. Factors such as bubbles generated in the weld, the angle of the weld, and structural changes affect the joint strength.

Compared with the foregoing method, the mechanical connection method usually uses a sleeve extrusion joint, or rolls the steel bar out of the screw thread, and then connects the steel bars with a threaded joint, which has the advantages of high joint strength, fast processing, energy saving and joint speed. Fast, therefore, the development of a variety of threaded joints of the rebar splicer, the common rebar splicer includes the rebar splicer disclosed in Figure 6 of the new patent of the Republic of China Patent No. M560495, including a thread with a relative arrangement The splicing member and the two male splicing members having the threaded teeth respectively matching the thread of the female splicing member, the two male splicing members are respectively connected with the friction welding of the steel bar, and the male splicing member and the female splicing member The two steel bars are connected by screwing. However, in this embodiment, the steel bars are subjected to friction welding processing with relatively energy consumption and then mechanically continued using the steel bar splicer.

Moreover, in the sleeve type reinforcing bar splicer, in order to facilitate the continuation of the reinforcing bar, the two threads of the female splicing piece are oppositely arranged, and the snails of the two male splicing pieces that have been connected to the reinforcing bar are respectively rotated. The number of threads of the female splicing piece is aligned to the axial direction, and then the female splicing piece is rotated by the clamp to simultaneously screw the two male splicing pieces and the female splicing piece, however, because the snails of the two male splicing pieces are screwed The number of turns that the teeth are initially screwed in is usually inconsistent, which may cause the screw of the male and female joints with more initial turns to be fully screwed into the thread of the female continuous joint when the rotary female continuous joint is screwed and fixed. Stopping the screwing and fixing, and the thread of the male splicing piece with less initial number of turns is still not threaded into the thread of the female splicing piece, so that the opposite side of the thread end of the two male splicing pieces fails. The gap is completely abutted, thus causing the strength of the continuous steel bar to decrease, and it is easy to bend or even break at the gap which is not completely abutted, thereby affecting the safety of the steel structure.

In view of the various problems to be solved mentioned in the prior art, the present invention aims to provide a connecting device for axially connecting two rods to solve the prior art, the connected structure is not easily at the ends of the two rods. The problem that the resulting gap is bent or even broken affects the joint structure.

The present invention provides a connecting device for axially connecting two rods, and the technical means thereof may include: a hollow sleeve having a through hole axially extending through opposite ends, the inner diameter surface of the through hole being opposite from a first end to the opposite end a second end extending in a direction to form a left internal thread, and extending from the second end to the first end to form a right internal thread; a first member having an outer diameter at one end Forming a left outer thread having a length, the left outer thread is screwed to the left inner thread of the hollow sleeve; and a second rod having an outer diameter at one end forming a right outer thread having a length, The right external thread is screwed to the right internal thread of the hollow sleeve; wherein, when the hollow sleeve is operated to rotate in one direction, the first rod and the second rod are axially adjacent to each other The ground is moved until the ends of the first and second bars interfere with each other to complete the connection.

One of the features of the present invention is that the left internal thread and the right internal thread both extend to an intermediate position of the hollow sleeve, and the left internal thread extends to the end of the inside of the through hole and the right internal thread extends to the inside of the through hole The terminals are adjacent to each other.

One of the features of the present invention may further include at least one spacer that is axially placed into the through hole of the hollow sleeve and that interferes with the end of the first and second members through the rotating hollow sleeve. The opposite sides of the spacer are joined to complete the gap so that there is no gap between the ends of the two members, thereby preventing the joined structure from breaking from the gap.

One of the features of the present invention is that at least one of the first and second members can be formed with a non-threaded protruding end at its end, and two protrusions of the first and second members can be transmitted through the rotating hollow sleeve. The ends are in opposition to each other to complete the connection such that there is no gap between the ends of the two members, thereby preventing the joined structure from breaking from the gap.

One of the features of the present invention is that the inner diameter surface of the through hole is axially extended from the center line position to the first end and the second end respectively to form a non-threaded section, and the inner diameter of the non-threaded section is larger than The through hole has an inner diameter and has no thread, and the two ends of the first and second rods are in contact with each other through the rotating hollow sleeve to complete the connection, so that there is no gap between the ends of the two rods, thereby avoiding The connected structure breaks from the gap.

One of the features of the present invention is that the first end and the second end of the through hole can be respectively formed with a first enlarged hole and a second enlarged hole, and an inner diameter of the first enlarged hole and the second enlarged hole is larger than an inner diameter of the through hole They are not threaded so that the two rods can be easily inserted into the hollow sleeve.

One of the features of the present invention is that the through hole extends from the first end to the second end with the same inner diameter, the length of the left outer thread of the first rod extends over the same outer diameter, and the right of the second rod The length of the external thread extends over the same outer diameter.

One of the features of the present invention is that the lengths of the left inner thread and the right inner thread of the through hole can be respectively formed into symmetric tapered holes, and the length ranges of the left outer thread and the right outer thread of the first and second rods are respectively formed. It is a cone corresponding to the tapered hole.

In addition, the various embodiments of the present invention are not limited to the above description, and other embodiments not mentioned may be clearly understood by those skilled in the art from the following description.

The technical solutions in the present invention are clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without departing from the scope of the present invention are within the scope of the present invention.

Further, in the following description of the present invention, detailed description of known related art may be omitted to avoid unnecessarily obscuring the subject matter of the present invention.

1A to 1C, according to a first embodiment of the present invention, a connecting device for axially connecting two rod members includes a hollow sleeve 10, two rod members 20 (i.e., first rod member 20a and second rod member 20b) And at least one spacer 30, in order to improve the connection strength, the hollow sleeve 10 and the two rods 20 may be made of the same material, wherein the hollow sleeve 10 has an axial direction through the opposite sides of the connecting device The through hole 14 of the end, the inner diameter surface of the through hole 14 extends from the first end 15a to the opposite second end 15b by a length to form a left internal thread 11a, and extends from the second end 15b toward the first end 15a. A right internal thread 11b is formed in length, and a terminal end of the left internal thread 11a extending into the inside of the through hole 14 and a terminal end of the right internal thread 11b extending to the inside of the through hole 14 are adjacent to each other, and the abutting position is preferably located in the hollow sleeve The center line position ML of the center of 10. The outer diameter of the spacer 30 is smaller than the inner diameter of the through hole 14, so that the spacer 30 can be axially placed into the through hole 14. In the embodiment of the present invention, the first rod member 20a and the second rod member 20b may be steel bars; the outer diameter of one end of the first rod member 20a forms a left outer thread 21a having a length, and the left outer thread 21a is screw-fitted to The left inner thread 11a of the hollow sleeve 10; and the outer diameter of one end of the second rod 20b is formed with a right outer thread 21b having a length, and the right outer thread 21b is screwed to the right inner thread 11b of the hollow sleeve 10; Insert the spacer 30 into the through hole 14, and screw the left and right external threads 21a, 21b into the left and right internal threads 11a, 11b, respectively (as shown in Figures 1A and 1B), due to the left and right inner The threads 11a, 11b are disposed opposite each other, and when the hollow sleeve 10 is rotated in the direction of screwing using a gripping tool such as a wrench, the first rod 20a and the second rod 20b can be brought closer to each other at the same time. The direction of the movement is axially moved, and at the same time, since both the left internal thread 11a and the right internal thread 11b extend to the center line position ML of the hollow sleeve 10, the first rod 20a and the second rod 20b are screwed into the hollow. During the sleeve 10 and during the tightening process, since the gasket 30 is not threaded and its outer diameter is smaller than the inside of the through hole 14 Instead, it can be moved with the end of the first rod 20a or the second rod 20b; and since the spacer 30 has a thickness, if the end of the left outer thread 21a of the first rod 20a reaches the hollow sleeve 10 first. When the center line position ML is pushed, the spacer 30 is pushed beyond the center line position ML, so that the end of the right outer thread 21b of the second rod 20b which is subsequently moved to interfere with the spacer 30 (as shown in FIG. 1C). On the other hand, if the end of the right outer thread 21b of the second rod 20b first reaches the line position ML of the hollow sleeve 10, it will push the gasket 30 beyond the center line position ML, so as to move to the first The end of the rod 20a is in contact with the spacer 30; therefore, when the first rod 20a and the second rod 20b are completely locked, even the left and right external threads 21a, 21b are initially screwed into the left and right internal threads 11a. The number of turns of 11b is inconsistent, and the ends of the first rod 20a and the second rod 20b can still completely oppose the opposite sides of the spacer 30 respectively without a gap, thereby preventing the connected structure from being broken from the gap. The problem. With such a connecting device, it is not necessary to take twice the time to screw the first rod 20a and the second rod 20b into the hollow sleeve 10, respectively, and since only the hollow sleeve 10 is rotated instead of rotating the first rod The 20a or the second rod 20b can solve the problem that the first rod 20a or the second rod 20b has been fixed to another object, and the first rod 20a or the second rod 20b cannot be rotated.

Referring to FIG. 2, according to a second embodiment of the present invention, at least one of the first rod member 20a and the second rod member 20b (i.e., the first rod member 20a in Fig. 2) may be provided with a left external thread. The end portion of the 21a is axially protrudedly formed with a protruding end 22a having an outer diameter smaller than the outer diameter of the left and right inner threads 11a, 11b, and the protruding end 22a can be formed by a chamfering technique, and then The first embodiment screwes the first rod 20a and the second rod 20b into the hollow sleeve 10 in the same manner, wherein the protruding end 22a is not threaded, and its outer diameter is smaller than the left and right internal threads 11a, The inner diameter of 11b, so that the protruding end 22a can easily penetrate the through hole 14 of the hollow sleeve 10, and can be restricted by the thread shape of the left and right inner threads 11a, 11b, with the end of the first rod 20a The position of the portion moves and moves; since the protruding end 22a has a protruding length in the axial direction, the opposite ends of the first rod 20a and the second rod 20b move toward the intermediate position of the hollow sleeve 10, the protruding end 22a Will first exceed the midline position ML, and then move to the second member 20b The portion is in contact with the end of the protruding end 22a; therefore, when the first rod member 20a and the second rod member 20b are completely locked, even if the left and right external threads 21a, 21b are initially screwed into the left and right internal threads 11a, The number of turns of 11b is inconsistent, and the ends of the projecting end 22a and the second rod 20b can still be completely in contact without a gap therebetween, thereby avoiding the problem that the joined structure is broken from the slit.

In addition, referring also to FIG. 2, according to the second embodiment of the present invention, the hollow sleeve 10 may further include first enlarged holes 12a and second enlarged holes respectively formed at the first end 15a and the second end 15b of the through hole 14. 12b, the inner diameters of the first enlarged hole 12a and the second enlarged hole 12b are larger than the inner diameter of the through hole 14, and the first enlarged hole 12a and the second enlarged hole 12b have no thread, so that the left side of the first rod 20a The thread 21a and the right external thread 21b of the second rod 20b can be easily introduced into the first enlarged hole 12a and the second enlarged hole 12b, respectively, and then easily assisted by the assistance of the first enlarged hole 12a and the second enlarged hole 12b. Align and screw into the left and right internal threads 11a, 11b. Wherein, the through hole 14 extends from the first enlarged hole 12a to the second enlarged hole 12b with the same inner diameter, and the first rod 20a is formed with the length t of the left external thread 21a and the second rod 20b is formed with The length t of the right outer thread 21b extends with the same outer diameter as the inner diameter of the through hole 14; and, in order to lock the left and right outer threads 21a, 21b into the hollow sleeve 10, the protruding end 22a can exceed the center line The position ML, the length t of the left and right external threads 21a, 21b is added to be equal to the axial length L of the hollow sleeve 10 (i.e., 2t).

Referring to Fig. 3, in the third embodiment of the present invention, the lengths of the left and right external threads 11a, 11b can be designed to be t, and the length of the projection 22a extending from the end of the left external thread 11a is further lengthened to t'. In order to match the total length 2t+t' of the left and right external threads 11a, 11b and the projection 22a, the length L1 of the range of the inner side surface of the hollow sleeve 10 having the left and right internal threads is set to 2t+t', and the hollow sleeve The lengths of the first enlarged hole 12a and the second enlarged hole 12b at both ends of the cylinder 10 are set to L2. Therefore, the length L of the hollow sleeve 10 is L1+2L2, that is, 2t+t'+2L2, that is, except for the left The lengths of the external thread 21a, the protruding end 22a, and the right external thread 21b are completely accommodated outside the range of the inner side surface of the hollow sleeve 10 having a thread, and the first enlarged hole 12a and the second enlarged hole 12b at both ends of the hollow sleeve 10 are respectively Further accommodating the length of a portion of the first rod member 20a and the second rod member 20b that are not threaded, so that the threads on the first rod member 20a and the second rod member 20b are completely covered in the hollow sleeve 10, further Protecting the first rod 20a and the second rod 20b from having a thread .

In addition, although not shown in the drawings, in another embodiment, the portions of the inner diameter surface of the through hole 14 formed with the left inner thread 11a and the right inner thread 11b may be respectively formed as tapered holes which are symmetrical to each other, and The portions of the one rod member 20a and the second rod member 20b having the left outer thread 21a and the right outer thread 21b, respectively, are formed as cones corresponding to the tapered holes.

Referring to FIG. 4A, the periphery of the hollow sleeve 10 of the present invention may be formed in a cylindrical shape, and a worker may rotate the hollow sleeve 10 using a gripping tool such as a pipe wrench to simultaneously simultaneously with the first rod 20a and the second. The rod 20b is screwed tightly. Alternatively, the periphery of the hollow sleeve 10 may be formed as a structure having a hexagonal corner post (as shown in FIG. 4B), allowing the worker to tighten the hollow sleeve 10 using a general wrench operation.

5A to 5D illustrate an assembly step of a connecting device for axially connecting two rod members according to a third embodiment of the present invention, comprising: axially connecting the first rod member 20a having the projecting end 22a and the hollow sleeve 10 Alignment (Fig. 5A); screwing the left outer thread 21a of the first rod 20a into the left inner thread 11a of the hollow sleeve 10 (Fig. 5B); screwing the right outer thread 21b of the second rod 20b into the hollow The right internal thread 11b of the sleeve 10 is looped (Fig. 5C); and the hollow sleeve 10 is rotated in a screwing direction using a gripping tool such as a wrench, so that the first rod 20a and the second rod 20b At the same time, they move axially toward each other until the protruding end 22a of the first rod 20a and the end of the second rod 20b completely interfere with each other to complete the connection (Fig. 5D).

6A to 6C, according to the fourth embodiment of the present invention, the center line position ML of the inner diameter surface of the through hole 14 of the hollow sleeve 10 may be axially extended to the first end 15a and the second end 15b, respectively. A length is formed to form the unthreaded section 16, the inner diameter of the unthreaded section 16 is larger than the inner diameter of the through hole 14 and has no thread, and the ends of the unthreaded section 16 are respectively terminated with the ends of the left inner thread 11a and the right inner thread 11b Adjacent; then the first rod 20a and the second rod 20b are screwed into the hollow sleeve 10 in the same manner as the first embodiment of the present invention; as shown in Fig. 6C, the left and right external threads 21a are And 21b are respectively screwed into the left and right internal threads 11a, 11b to the ends of the left and right external threads 21a, 21b beyond the intersection of the left and right internal threads 11a, 11b and the unthreaded section 16, even if left and right The number of turns of the threads 21a, 21b initially screwed into the left and right internal threads 11a, 11b is inconsistent. For example, the number of turns of the left external thread 21a initially screwed into the left internal thread 11a is first to the right internal thread 21b. The number of turns of 11b is large, so that when the end of the left external thread 21a first reaches the center line position ML during the tightening process Since the unthreaded section 16 is not threaded and its inner diameter is larger than the outer diameters of the left and right outer threads 21a, 21b, the left and right outer threads 21a, 21b are not restricted by the shape of the unthreaded section 16, and the hollow sleeve can be continuously rotated. The barrel 10 is screwed to the connecting structure, and when the first rod 20a and the second rod 20b are completely locked, the ends of the first rod 20a and the second rod 20b can still completely collide without being between There is a gap, thereby avoiding the problem that the joined structure is broken from the slit, and wherein the intersection of the ends of the left and right external threads 21a, 21b is not located at the center line position ML but slightly offset to the second end 15b shift. Similarly, although not shown, it is assumed that the number of turns of the right external thread 21b initially screwed into the right internal thread 11b is larger than the number of turns of the left external thread 21a which is initially screwed into the left internal thread 11a, due to the presence of the unthreaded section 16, When the first rod member 20a and the second rod member 20b are completely locked, the ends of the first rod member 20a and the second rod member 20b can still completely collide without a gap therebetween, and wherein the left and right sides are outside The intersection of the ends of the threads 21a, 21b is not located at the centerline position ML but is slightly offset towards the first end 15a.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is defined by the scope of the claims rather than the above description, and therefore is intended to fall within the scope of the claims. All changes within the meaning and scope of equivalent elements are included in this novel. Any component symbols in this specification should not be considered as limiting the scope of the patent application involved.

10‧‧‧ hollow sleeve

11a‧‧‧Left internal thread

11b‧‧‧Right internal thread

12a‧‧‧First enlarged hole

12b‧‧‧ second enlarged hole

14‧‧‧through hole

15a‧‧‧ first end

15b‧‧‧second end

16‧‧‧No thread segments

20‧‧‧ rods

20a‧‧‧first member

20b‧‧‧second rod

21a‧‧‧left external thread

21b‧‧‧Right external thread

22a‧‧‧ Highlight

30‧‧‧shims

ML‧‧‧ midline position

X‧‧‧ axis

1A to 1C are schematic views showing a structure in which two rod members are coupled to a gasket through a hollow sleeve according to a first embodiment of the present invention; and FIG. 2 is a view showing a hollow sleeve according to a second embodiment of the present invention. FIG. 3 is a schematic view showing the relationship between the hollow sleeve and the other thread length of the two rods and another form of the protruding end according to the third embodiment of the present invention; FIG. 4A FIG. 4B is an axial side view showing the outer diameter of the hollow sleeve of the present invention formed into a circular column shape; FIG. 4B is an axial side view showing the outer diameter of the hollow sleeve of the present invention formed into a hexagonal angular column shape. 5A to 5D are schematic views showing an assembly procedure for axially connecting two rods to a hollow sleeve according to a third embodiment of the present invention; and Figs. 6A to 6C are diagrams showing two according to a fourth embodiment of the present invention A structural view of the combination of the rods through a hollow sleeve connection having a non-threaded section at its intermediate position.

Claims (7)

A connecting device for axially connecting two rods, comprising: a hollow sleeve having a through hole extending axially through opposite ends, the inner diameter surface of the through hole extending from a first end to an opposite second end Forming a left internal thread in a length, and extending a length from the second end toward the first end to form a right internal thread; a first rod having an outer diameter at one end forming a left having a length An external thread, the left external thread is screwed to the left internal thread of the hollow sleeve; and a second rod having an outer diameter at one end forming a right external thread having a length, the right external thread being screwed to the The right inner thread of the hollow sleeve; wherein, when the hollow sleeve is operated to rotate in one direction, the first rod and the second rod are axially moved toward each other at the same time until the first The ends of the two rods abut each other to complete the connection. The connecting device for axially connecting the two rods according to claim 1, wherein the left inner thread and the right inner thread both extend to an intermediate position of the hollow sleeve, and the left inner thread extends to the through hole The inner terminal and the terminal end of the right inner thread extending to the inside of the through hole abut each other. The connecting device for axially connecting the two rods according to claim 2, further comprising at least one spacer axially inserted into the through hole of the hollow sleeve, the first The ends of the two members are in contact with opposite sides of the spacer to complete the connection. The connecting device for axially connecting the two rods according to claim 2, wherein at least one of the first rod member and the second rod member has the left outer thread or the right outer thread The end portion is axially projectingly formed with a protruding end that is not threaded, and the both end portions of the first and second rod members are in contact with each other to complete the connection. The connecting device for axially connecting the two rods according to claim 1, wherein the inner diameter surface of the through hole is formed by a middle line position to the first end and the second end respectively extending axially by a length A non-threaded section having an inner diameter greater than the inner diameter of the through hole and having no threads. The connecting device for axially connecting the two rods according to any one of claims 1 to 5, wherein the first end and the second end of the through hole respectively form a first enlarged hole and a second The hole is enlarged, the inner diameter of the first enlarged hole and the second enlarged hole is larger than the inner diameter of the through hole, and the first enlarged hole and the second enlarged hole have no thread. The connecting device for axially connecting the two rods according to any one of claims 1 to 5, wherein the through hole extends from the first end to the second end with the same inner diameter, the first rod The length of the left outer thread of the piece extends over the same outer diameter, and the length of the right outer thread of the second rod extends over the same outer diameter.