TWI460368B - Method for jointing a nut of a pipe and the pipe structure thereof - Google Patents

Description

Nut joint method of pipe fitting and pipe structure with nut

The present invention provides a nut joint method for a pipe member and a pipe member structure having a nut, which is related to a method of manufacturing a pipe member and a nut by welding, and a structure of the pipe member.

A general telescopic sleeve is mainly provided with an inner tube for an outer tube 10, and is inserted by the outer tube 10 by a screw member 11 to force the inner tube to form a position, and the outer tube 10 is required to fit the screw member 11. A nut 12 is disposed to screw the screw member 11, as shown in FIGS. 1 to 3, which is a general outer tube 10, and the outer tube 10 is engaged with the nut 12 by directly welding the nut 12 by means of arc welding. Soldering on the outer peripheral side of the outer tube 10, the screw 11 is screwed onto the nut 12 and penetrates into the outer tube 10; however, since the outer tube 10 is generally in the form of a circular tube, the joint The process must stabilize the position of the nut 12 and the outer tube 10 and perform CO ₂ welding at the same time, and must be welded with the welding rod, so that the welding difficulty is greatly improved, and the welding efficiency is not good, and the welding takes too long. The lack of production cost improvement; at the same time, because welding is performed with consumable welding rods, it will produce obvious weld bead X after welding, which will cause the problem of unsightly products after welding; The joint of the nut 12 and the outer tube 10 is located on the outer surface of the outer tube 10. At the same time, the exposed joint is more susceptible to impact or damage, resulting in the damage of the nut 12 falling off; in view of this, the inventors have studied and studied more deeply, and after many research and development trials, finally invented A nut jointing method for a pipe member and a pipe member structure having a nut.

The invention provides a nut jointing method for a pipe fitting and a pipe fitting structure having a nut, the main purpose of which is to solve the problem that the conventional joining method is difficult and the production cost is high; and another object is to solve the conventional joining method. The pipe fitting with the nut is not aesthetically pleasing and easily damaged, and the service life is low.

In order to achieve the above object, the present invention provides a nut joining method for a pipe fitting, which is mainly for engaging a positioning jig to engage a nut and a pipe member, and the joining method comprises: a nut positioning step, the positioning jig is provided by a first Forming a second sleeve portion on a sleeve portion, and the nut member is formed by an end edge of a lock sleeve portion, and the lock sleeve portion of the nut has an internally threaded hole; The nut positioning step is that the nut is sleeved on the second threaded portion of the locking fixture and the abutting edge abuts against the first sleeve portion; the tube positioning step The tube peripheral mask has a perforation, and the tube positioning step is to insert the tube member on the first sleeve portion of the positioning fixture, and the perforation is further inserted into the locking sleeve portion of the nut, so that the tube The locking sleeve portion of the nut is pierced by the perforation of the tubular member, and the abutting edge of the nut is abutted against the inner circumferential surface of the tubular member; and the spot welding step is performed, and the outer peripheral surface of the tubular member is corresponding to the nut Spot welding.

By using the positioning fixture, the nut and the pipe fitting can be positioned at the positioning fixture and located at the joint position, which simplifies the difficulty of the spot welding, and improves the production efficiency of the spot welding and improves the economic efficiency.

In addition, in order to achieve another object of the present invention, the present invention provides a pipe structure having a nut, comprising: a pipe member, a hollow pipe body structure, and the pipe member has a perforation; and a nut, a lock sleeve The end edge of the portion is formed by abutting edge, and the locking sleeve portion of the nut has an internally threaded hole, and the through hole of the tubular member is sleeved through the locking sleeve portion of the nut, and the locking sleeve portion is pierced by the through hole The pipe member has an abutment against the inner circumferential surface of the pipe member and is fusion-bonded, and the nut is screwed to a screw member.

By arranging the abutting edge of the nut against the inner circumferential surface of the pipe member, and welding the nut and the pipe member by spot welding, the outer circumference of the pipe member does not cause a weld bead which affects the appearance, and the nut is The setting method can avoid the occurrence of the collision joint at the time of use, and can surely improve the service life.

In order to enable the reviewing committee to have a better understanding and understanding of the purpose, features and effects of the present invention, the following is a detailed description of the following: a preferred embodiment of the nut joining method of the tubular member of the present invention, for example. As shown in FIGS. 4 to 8, the resistance spot welding machine 20 having a positioning jig 21 is mainly engaged to engage a nut 30 and a pipe member 40, and the joining method includes: a nut positioning step A, the resistance point The positioning fixture 21 is fixedly formed on the welding machine 20, and the positioning fixture 21 is formed by forming a second sleeve portion 212 on the first sleeve portion 211. The first sleeve portion 211 and the same in the embodiment The second sleeve portion 212 is a cylindrical structure, and the nut 30 is formed by a flange 32 formed by the end edge of the lock sleeve portion 31, and the lock sleeve portion 31 of the nut 30 has an internally threaded hole. 311; the nut is set In step A, the nut 30 is sleeved on the second threaded portion 212 of the positioning fixture 21 with the female threaded hole 311 of the locking sleeve portion 31, and the flange 32 is abutted against the first sleeve. The portion 211 is as shown in Fig. 6; the tube positioning step B, the tube member 40 has a perforation 41 in the mask, and the tube positioning step B is to insert the tube member 40 on the first sleeve portion of the positioning jig 21 211, and the perforation 41 is further inserted into the locking sleeve portion 31 of the nut 30, so that the locking sleeve portion 31 of the nut 30 is pierced by the through hole 41 of the tubular member 40, and the nut 30 is abutted. The edge 32 abuts against the inner circumferential surface of the pipe member 40, as shown in Fig. 7; the spot welding step C, the resistance spot welding machine 20 has a welding electrode 22, and the welding electrode 22 of the resistance spot welding machine 20 When the outer peripheral surface of the pipe member 40 is touched to the nut 30, a current is applied and pressure is applied to perform spot welding, as shown in FIG.

The pipe structure made by the above jointing method is as shown in Figures 9 and 10, comprising: a pipe member 40, a hollow pipe body structure, and the pipe member 40 has a perforation 41; and a nut 30, The end edge of the locking sleeve portion 31 is formed by a flange 32, and the locking sleeve portion 31 of the nut 30 has an internally threaded hole 311, and the through hole 41 of the tube member 40 is sleeved through the locking sleeve of the nut 30. The locking portion 31 is threaded out of the tubular member 40 by the through hole 41, and the abutting edge 32 of the nut 30 abuts against the inner circumferential surface of the tubular member 40 and is fusion-bonded. The nut 30 can be screwed. A screw 50.

The above is the nut jointing method of the pipe fitting of the present invention and the pipe fitting structure having the nut, and the method for joining the pipe fitting and the nut of the present invention is provided with the positioning jig 21 Since the resistance spot welding machine 20 uses the joint, the nut 30 and the pipe member 40 can be positioned at the joint position by the positioning of the positioning jig 21 during the joining process, so that the spot welding work can be easily performed, which can greatly The difficulty of the joining work is reduced, and at the same time, the production efficiency of the joining work can be simultaneously improved, the production cost is reduced, and the economic benefit is created. The nut 30 of the pipe structure made by the above joining method only passes through the locking sleeve portion 31. Outside the tube member 40, the outer surface of the tube member 40 does not have an uneven bead, which can maintain the aesthetic appearance of the tube member 40. At the same time, since the nut 30 abuts against the inner circumference of the tube member 40 by the flange 32. The joints and the joints of the nut 30 are not exposed, so that the joint between the nut 30 and the tubular member 40 can be reduced, which can extend the service life of the tubular structure.

"Knowledge Technology"

10‧‧‧External management

11‧‧‧ screw

12‧‧‧ Nuts

X‧‧‧weld

"this invention"

20‧‧‧Resistance spot welding machine

21‧‧‧ positioning fixture

211‧‧‧First wearing part

212‧‧‧Second wear parts

22‧‧‧ welding electrode

30‧‧‧ Nuts

31‧‧‧Lock knots

311‧‧‧Threaded hole

32‧‧‧Resist

40‧‧‧ Pipe fittings

41‧‧‧Perforation

50‧‧‧ screw

A‧‧‧ Nut positioning steps

B‧‧‧ Pipe positioning steps

C‧‧‧ point welding step

Figure 1 is a schematic exploded view of a conventional outer tube with a nut.

Figure 2 is a schematic perspective view of a conventional outer tube joint nut.

Figure 3 is a cross-sectional view of a conventional outer tube joint nut.

Figure 4 is a flow chart showing the steps of the nut joining method of the pipe fitting of the present invention.

Fig. 5 is a schematic view showing a fitting member in a nut joining method of a pipe member according to the present invention.

Fig. 6 is a schematic view showing the step of positioning the nut in the nut joining method of the pipe member of the present invention.

Fig. 7 is a schematic view showing the step of positioning a pipe member in the nut joining method of the pipe member of the present invention.

Fig. 8 is a schematic view showing the point welding step in the nut joining method of the pipe member of the present invention.

Fig. 9 is a perspective view showing the structure of a pipe member having a nut made by the nut joining method of the pipe member of the present invention.

Fig. 10 is a cross-sectional view showing the structure of a pipe member having a nut made by a nut joining method of a pipe member of the present invention.

20‧‧‧Resistance spot welding machine

21‧‧‧ positioning fixture

211‧‧‧First wearing part

212‧‧‧Second wear parts

22‧‧‧ welding electrode

30‧‧‧ Nuts

31‧‧‧Lock knots

311‧‧‧Threaded hole

32‧‧‧Resist

40‧‧‧ Pipe fittings

41‧‧‧Perforation

Claims (5)

A nut jointing method for a pipe fitting is mainly for engaging a positioning jig to engage a nut and a pipe member, and the joining method comprises: a nut positioning step, wherein the positioning jig is formed by a first bushing portion The nut is formed by a sleeve portion formed by an end edge of a lock sleeve portion, the lock sleeve portion having an internally threaded hole; the nut positioning step is to lock the nut The inner threaded hole of the sleeve portion is sleeved on the second sleeve portion of the positioning fixture and the abutting edge abuts against the first sleeve portion; in the tube positioning step, the tube member has a perforation in the circumference of the tube member, and the tube member is positioned The step of inserting the tube member on the first sleeve portion of the positioning fixture, and allowing the perforation to pass through the locking sleeve portion of the nut, so that the locking sleeve portion of the nut is perforated by the tube member The nut is worn out, and the abutting edge of the nut is abutted against the inner peripheral surface of the pipe member; and the spot welding step is performed, and the outer peripheral surface of the pipe member is spot-welded at the corresponding nut. The nut jointing method of the pipe fitting according to the first aspect of the invention, wherein the positioning jig is fixedly disposed on a resistance spot welding machine. The nut jointing method of the pipe fitting according to the first aspect of the invention, wherein the first piercing portion and the second piercing portion are both cylindrical structures. The nut joint welding method of the pipe fitting according to the second aspect of the invention, wherein the resistance spot welding machine has a welding electrode, and the welding step of the spot is to touch the outer circumference of the pipe member by the welding electrode of the resistance spot welding machine. When the surface corresponds to the nut, the current is applied and pressure is applied to perform spot welding. A pipe structure having a nut, comprising: a tubular member having a hollow tubular body structure and having a perforation in the peripheral portion of the tubular member; and a nut formed by forming an abutment at an end edge of the locking sleeve portion, and the locking sleeve portion of the nut having an inner portion a threaded hole, the through hole of the pipe member is sleeved through the lock sleeve portion of the nut, the lock sleeve portion is pierced out of the pipe member by the through hole, and the abutting edge of the nut is abutted against the inner peripheral surface of the pipe member and is fusion-bonded. The nut can be screwed to a screw.