JP3658347B2 - Tube fixing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tube fixing method for fixing a tube capable of compressive elastic deformation to a rigid member to be connected, and a riveter using this method.
[0002]
[Prior art]
Conventionally, a fixing method of the tube T as shown in FIG. 6 is known. This method of fixing the tube T uses a commercially available tube joint 100. After one end of the tube joint 100 is connected and fixed to a connected member 200 such as a riveter, the tube T is connected to the tube joint 100. It is to connect to the other end of the.
[0003]
The tube joint 100 includes an elbow pipe 101 bent at a substantially right angle, a nut body 102 formed integrally with one end of the elbow pipe 101, and a screw having a male screw on an outer peripheral surface extending from the nut body 102. It consists of a pipe 103 and a joint pipe 104 connected to the other end of the elbow pipe 101.
[0004]
The joint pipe 104 includes a pipe main body 105 and a sliding contact pipe 106 having a flange portion 107 that is fitted into the pipe main body 105 with a sliding contact body, and the distal end of the tube T is inserted into the sliding contact pipe 106. Thus, while the sliding contact tube 106 is immersed in the tube main body 105, the tube T is prevented from coming off, and the tube T can be removed by releasing the retaining by pressing the flange portion 107 toward the tube main body 105. .
[0005]
[Problems to be solved by the invention]
By the way, the tube joint 100 configured as described above has a very complicated structure and a large number of parts, and therefore is very expensive. Therefore, various apparatuses using the tube joint 100 include the existence of the tube joint 100. Therefore, it has been difficult to reduce the cost.
[0006]
Further, in order to fix the tube joint 100 to the connected member 200, an internal thread must be screwed on the inner peripheral surface of the connection hole 201 provided in the connected member 200, and this threading operation is very difficult. In addition to being troublesome, the screw tube 103 of the tube joint 100 must be screwed into the connection hole 201 using a torque wrench, and these operations are complicated, work efficiency is poor, and work cost increases. Is also present.
[0007]
The present invention was made to solve the above problems, and it is possible to easily and quickly connect and fix a tube to a connected member without using an expensive tube joint, Accordingly, it is an object of the present invention to provide a tube fixing method and a riveter using this method that can improve workability while ensuring reduction in component costs.
[0008]
[Means for Solving the Problems]
  The invention according to claim 1 is composed of a rigid body.CoveredA tube fixing method in which a tube is connected and fixed to a connection hole drilled in a connection member, wherein a rivet body comprising a cylindrical body and a collar formed at one end of the body From the other end, the inner diameter of the barrelLargeThe head with a diametric dimension and the inner diameter of the body connected to the head concentrically and integrally.SmallUsing a rivet formed by inserting a shaft composed of a shaft portion having a diametric dimension into the rivet body, the shaft is relatively fitted from the head side to the tube, and the body portion is fitted into the tube in the connection hole. The rivet mounting process to make the inscribed state and the pin pulling that presses the tube against the inner peripheral surface of the connection hole at the outer peripheral surface of the trunk portion by expanding the diameter of the trunk portion by passing the head portion by pulling out the shaft portion It is a tube fixing method characterized by connecting and fixing a tube to the connection hole by passing through a process.
[0009]
According to this invention, after the shaft portion of the shaft is inserted into the barrel portion of the cylindrical rivet body from the side opposite to the flange portion and the head portion of the shaft is in contact with the end portion of the barrel portion, In the rivet mounting process, the shaft is relatively fitted from the head side into the tube so that the body part is inscribed in the connection hole of the connected member, and the collar part is in contact with the connected member, and then the pin In the drawing process, the tube is pressed against the inner peripheral surface of the connection hole at the outer peripheral surface of the expanded trunk by expanding the diameter of the trunk by passing the head by pulling out the shaft. Thus, the tube is fixed to the connected member.
[0010]
In the rivet mounting process, the shaft holding the rivet body may first be fitted into the connection hole, and then the tube may be fitted to the rivet body within the connection hole, or the tube may be inserted into the connection hole. Then, the shaft holding the rivet body may be fitted into the tube. Further, the fitting of the shaft holding the rivet body into the connection hole and the fitting of the tube into the connection hole may be performed simultaneously. In short, it is only necessary that the tube is externally fitted to the rivet body in the connection hole, and the order of fitting is not particularly limited.
[0011]
In this way, the tube is fixed to the connected member by performing a simple operation of pulling out the shaft from the rivet body after simultaneously inserting the rivet body and the tube through which the shaft has passed into the connecting hole of the connected member. Compared to the conventional tube fixing method using a tube joint, the workability is significantly improved, which contributes to a reduction in work costs and reduces the cost of parts by not using a tube joint. Reduction is realized.
[0012]
  The invention according to claim 2The invention according to claim 1 is applied to a riveter, and the tube is provided with a shaft pull-out portion for pulling out the shaft, a pull-out drive portion for operating the shaft pull-out portion, and a hydraulic pressure supply that provides driving force to the pull-out drive portion A tube for an air phase used in a riveter comprising a portion, an air cylinder portion that drives the hydraulic pressure supply portion, and an air pressure supply portion that supplies air pressure to drive the air cylinder portion, and the connected member is It is a rigid member of a riveter.
[0013]
According to the present invention, since the tube is fixed at a predetermined position of the riveter by the method of claim 1, which can reduce both the component cost and the work cost, the manufacturing cost of the riveter can be reduced.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a process diagram for explaining each process of the tube fixing method of the present invention. As shown in this figure, in the tube fixing method of the present invention, a tube T made of a flexible material such as a rubber material or a soft synthetic resin material is connected and fixed to a predetermined connected member 200 made of a rigid body. For this purpose, it comprises a rivet mounting process P1 and a pin pulling process P2.
[0015]
In the pin drawing process P2, the rivet 10 obtained by inserting the rod-shaped shaft 30 through the tubular rivet body 20 is used. By using this rivet 10, the tube T is fixed to the connected member 200 easily and quickly. Therefore, the structure of the rivet 10 is important in the present invention.
[0016]
The rivet body 20 is formed of a ductile metal material such as an aluminum alloy or a copper alloy. As shown in FIG. 2, a cylindrical body 21 and one end of the body 21 (the lower end in FIG. 1). Part) and a collar part 22 formed concentrically. The outer diameter dimension of the trunk portion 21 is set slightly smaller than the inner diameter dimension of the tube T, so that the trunk portion 21 can be easily inserted into the tube T.
[0017]
On the other hand, the shaft 30 has a shaft portion 31 whose diameter is set so as to be fitted in the body portion 21 in a sliding contact state, and one end portion (the upper end portion in FIG. 1) of the shaft portion 31. It consists of a formed spherical head 32. The shaft 30 is configured such that the length of the shaft portion 31 is longer than that of the rivet body 20 and the tip side is tapered, and the head portion 32 is centered on the shaft center of the shaft portion 31. The maximum diameter dimension is set to be the same as the outer diameter dimension of the body portion 21.
[0018]
And the rivet 10 is obtained by inserting the axial part 31 of the shaft 30 into the trunk | drum 21 of the rivet main body 20 from the edge part on the opposite side to the collar part 22. FIG. The rivet 10 is different from the conventional rivet member in that an annular groove is not provided in the shaft portion 31. The said annular groove is for making the diameter dimension of the part of the axial part 31 smaller than others. By doing so, when the shaft portion 31 is pulled out from the rivet body 20, stress concentration occurs in the annular groove portion, and the shaft portion 31 is easily broken. In the conventional rivet member, the head 32 is left in the rivet main body 20 by the above breakage, and the caulking process is performed. However, in the method of the present invention in which the head is pulled out, the use of the conventional rivet member is used. Is not suitable.
[0019]
In the rivet mounting step P1, as shown in the lower frame of the rivet mounting step P1 in FIG. 1, the tube T and the rivet body 20 are mounted in a connection hole 201 formed in a predetermined connected member 200 made of a rigid body. It is a process. The tube T is fixed to the connection hole 201 of the member to be connected 200 via the rivet body 20 by a predetermined operation in the rivet mounting step P1.
[0020]
FIG. 2 is an enlarged explanatory view in cross-sectional view showing an embodiment of the mounting operation in the rivet mounting process P1. FIG. (B) shows a state in which both the tube T and the rivet 10 are inserted into the connection hole 201 of the connected member 200.
[0021]
When mounting and fixing the tube T in the connection hole 201 of the connected member 200, as shown in FIG. 2A, the tube T and the rivet 10 are moved up and down across the connection hole 201 of the connected member 200. Opposed. At this time, for the rivet 10, the head portion 32 of the shaft 30 faces the connection hole 201. Incidentally, the connection hole 201 is perforated with an inner diameter dimension set in advance so that the tube T can be inserted in a sliding contact state.
[0022]
Next, the tube T is first inserted into the connection hole 201, and the rivet 10 is subsequently inserted into the tube T from the head 32 side. At this time, since the outer diameter of the head portion 32 and the body portion 21 is set to be approximately the same as the inner diameter size of the tube T, as shown in FIG. Can be plugged in. The order of inserting the tube T and the rivet 10 into the connection hole 201 is not limited to inserting the rivet 10 into the tube T after inserting the tube T as described above. May be inserted into the body portion 21 in the connection hole 201, or both may be inserted into the connection hole 201 at the same time.
[0023]
The rivet body 20 is provided with a flange 22, and the rivet 10 is fitted into the tube T in the connection hole 201 so that the flange 22 of the rivet body 20 is brought into contact with the lower edge of the connection hole 201. Therefore, it is possible to always properly position the insertion amount of the rivet 10 by this stop.
[0024]
The pin pulling process P2 is a process of pulling out the shaft portion 31 of the rivet 10 inserted into the connection hole 201 of the connected member 200 from the rivet body 20 as shown in the lower frame of the pin pulling process P2 in FIG. is there. By passing through this process, the diameter dimension of the trunk | drum 21 is expanded by passage of the head part 32, Therefore The tube T is pressed on the inner peripheral surface of the connection hole 201 by the outer peripheral surface of the trunk | drum 21, and a to-be-connected member It is securely fixed to the 200 connection holes 201.
[0025]
FIG. 3 is an enlarged explanatory view in cross-sectional view showing an embodiment of the pulling operation in the pin pulling process P <b> 2, and FIG. 3A is a shaft portion 31 of the shaft 30 fitted in the connection hole 201 of the connected member 200. (B) shows a state where the tube T is fixed to the connection hole 201 of the member to be connected 200.
[0026]
When pulling out the shaft 30 in the pin pulling process P2, first, a rivet 40, which will be described in detail later, is externally fitted to the shaft portion 31 of the shaft 30 until the tip end of the shaft 30 abuts against the flange portion 22 of the rivet body 20 (FIG. 3 (A)), a predetermined drive switch (a trigger 47a described later) is turned on / off. Then, the distal end portion of the riveter 40 moves so as to draw the shaft portion 31 into the riveter 40, and thereby the trunk portion 21 in a state where the upper surface of the distal end portion of the riveter 40 prevents the rivet body 22 from coming off. Only is taken down.
[0027]
And since the head part 32 of the shaft 30 fits in the said trunk | drum 21 while expanding the trunk | drum 21 by this taking-up force by plastic deformation, it shows to (a) of FIG. Thus, the tube T in the connection hole 201 is compressed and elastically deformed so that the thickness dimension becomes thinner over the entire circumference.
[0028]
By repeating such an on / off operation of the trigger 47 a, the shaft portion 31 is intermittently sequentially pulled into the riveter 40, and the head portion 32 of the shaft 30 is pulled out from the trunk portion 21. In the state where the head portion 32 is pulled out from the trunk portion 21, as shown in FIG. 3B, the tube T in the connection hole 201 is expanded in diameter over the entire length and the entire circumference. Between the outer peripheral surface of the connecting hole 201 and the inner peripheral surface of the connecting hole 201, whereby the tube T is connected and fixed to the connecting hole 201 of the connected member 200 via the rivet body 20. .
[0029]
The tube T fixing method of the present invention is for connecting and fixing the tube T to a connection hole 201 drilled in a predetermined connected member 200 made of a rigid body. A head 32 having a diameter slightly larger than the inner diameter of the body portion 21 from the other end of the rivet body 20 including the flange portion 22 formed at one end of the portion 21, and the head Use the rivet 10 obtained by inserting the shaft portion 31 of the shaft 30 composed of the shaft portion 31 that is concentrically and integrally connected to the shaft 32 and has a diameter portion 31 slightly smaller than the inner diameter size of the body portion 21. As a premise, the shaft 30 is relatively fitted into the tube T from the head 32 side so that the body portion 21 is inscribed in the tube T in the connection hole 201, and the flange portion 22 is connected to the member to be connected. 200 contacted The rivet body 20 is attached to the tube T, and the diameter of the body portion 21 is expanded by passing the head portion 32 by pulling out the shaft portion of the shaft 30, so that the tube T is attached to the body portion 21. The pin pulling process P2 pressed against the inner peripheral surface of the connection hole 201 at the outer peripheral surface.
[0030]
Accordingly, in the rivet setting step P1, the shaft 30 is relatively fitted into the tube T from the head 32 side so that the body portion 21 is inscribed in the tube T in the connection hole 201 of the connected member 200. The tube T is brought into a state in which the head portion 32 is brought into contact with the connected member 200, and in the pin pulling process P2, the diameter of the trunk portion 21 is expanded by passing the head portion 32 by pulling out the shaft portion. Then, the expanded outer peripheral surface of the body portion 21 is pressed against the inner peripheral surface of the connection hole 201, whereby the tube T can be fixed to the connected member 200.
[0031]
As described above, by inserting the rivet main body 20 through which the shaft 30 is penetrated and the tube T into the connection hole 201 of the connected member 200 at the same time, and then pulling out the shaft 30 from the rivet main body 20, It becomes possible to fix the tube T to the connected member 200, and the workability is remarkably improved as compared with the conventional method of fixing the tube T using the tube joint 100, thereby contributing to the reduction of the work cost. In addition, the cost of parts can be reduced by not using the tube joint 100.
[0032]
FIG. 4 is a perspective view showing an embodiment of a riveter 40 to which the tube fixing method of the present invention is applied, and FIG. 5 is a longitudinal sectional view thereof. As shown in this figure, the riveter 40 is a tool used for pulling out the shaft 30 of the rivet 10 inserted into the connection hole 201 of the connected member 200 ((B) of FIG. 3). A shaft pulling portion 41 for pulling out the shaft 30, a pulling drive portion 42 for operating the shaft pulling portion 41, a pin discharge portion 43 for discharging the pulled shaft 30 to the outside of the machine, and a hydraulic pressure for applying a driving force to the pulling drive portion 42 A supply unit 44; an air cylinder unit 45 for driving the hydraulic pressure supply unit 44; an air pressure supply unit 46 for supplying air pressure to drive the air cylinder unit 45; a shaft extraction unit 41; an extraction drive unit 42; It has a basic configuration including an operation unit 47 that controls the operation of the supply unit 44, the air cylinder unit 45, and the air pressure supply unit 46.
[0033]
The shaft pull-out portion 41 includes a frame head 41 a disposed so that the front end surface can face the rivet 10. A pin pulling mechanism 41b for gripping and pulling the shaft portion 31 is built in the frame head 41a, and a conical cylindrical nose piece 41c is provided concentrically with the pin pulling mechanism 41b at the tip of the frame head 41a. It has been. Then, as shown in FIG. 3 (a), the nose piece 41c is gripped by operating the pin pulling mechanism 41b in a state where it abuts against the flange portion 22 of the rivet body 20 of the rivet 10, as shown in FIG. The formed shaft 30 is pulled out from the rivet body 20 in the connection hole 201 and pulled into the frame head 41a.
[0034]
The pulling drive unit 42 obtains the hydraulic pressure from the hydraulic pressure supply unit 44 and gives the pin pulling mechanism 41b a reciprocating motion in the axial direction. The pin pulling mechanism 41b built in the cylindrical casing 42a It has a hydraulic cylinder mechanism 42b concentrically linked, and the pin pulling mechanism 41b performs the pulling operation of the shaft portion 31 by driving toward the rear (left side in FIG. 5) of the hydraulic cylinder mechanism 42b. Yes.
[0035]
The pin discharge portion 43 includes a frame cap 43a that discharges the extracted shaft 30 concentrically connected to the rear end of the extraction drive portion 42 to the outside of the machine. The shaft 30 extracted by driving the shaft extraction portion 41 is discharged out of the machine through the frame cap 43a.
[0036]
The oil pressure supply unit 44 includes an oil sleeve 44a fixed to the lower surface side of the cylindrical casing 42a of the pull-out drive unit 42, and an air piston rod fitted in sliding contact with the oil sleeve 44a from the lower end opening of the oil sleeve 44a. 44b.
[0037]
Then, as the air piston rod 44b is raised by driving the air cylinder portion 45, the hydraulic oil in the oil sleeve 44a is supplied to the hydraulic cylinder mechanism 42b, whereby the hydraulic cylinder mechanism 42b causes the pin pulling mechanism 41b to move forward and the air. The hydraulic oil in the oil sleeve 44a is pulled back from the hydraulic cylinder mechanism 42b by the lowering of the air piston rod 44b due to the reverse drive of the cylinder portion 45, whereby the hydraulic cylinder mechanism 42b reversely operates the pin pulling mechanism 41b. . The shaft 30 is pulled out from the rivet body 20 by repeating the forward and reverse operations of the pin pulling mechanism 41b.
[0038]
As shown in FIG. 4, the oil sleeve 44a of the hydraulic pressure supply unit 44 is sandwiched from the left and right by a pair of frame covers 51, whereby a frame as shown by a two-dot chain line in the same figure outside the oil sleeve 44a. A unit 50 is formed. The frame unit 50 is for gripping when the operator operates the riveter 40.
[0039]
The air cylinder portion 45 includes a cup 45a that is concentric with the oil sleeve 44a at the lower portion of the hydraulic pressure supply portion 44, and an air piston 45b that is slidably inserted into the cup 45a. .
[0040]
The lower end portion of the air piston rod 44b is concentrically fixed at the center position of the upper surface of the air piston 45b, and the air piston 45b rises by introducing high pressure air into the lower space from the air piston 45b in the cup 45a. The piston 45b rises, and a predetermined hydraulic pressure is applied to the hydraulic oil in the hydraulic pressure supply unit 44. On the other hand, the hydraulic oil in the oil sleeve 44a is lowered by the lowering of the air piston rod 44b through the air piston 45b due to the decompression of the lower space. The pressure is reduced.
[0041]
The air pressure supply unit 46 includes an air tube (air hose) 46b disposed between the air source 46a and the air pressure supply unit 46 in order to send high pressure air from an air source 46a that supplies high pressure air, and the air tube. And an air switching mechanism 46c connected to the downstream end of 46b. The air switching mechanism 46c has a predetermined switching valve 46d therein, and supply and stop of supply of high-pressure air from the air tube 46b into the cup 45a by a predetermined switching operation of the switching valve 46d by operation of the operation unit 47. It can be switched.
[0042]
The operation unit 47 includes a trigger 47a that is provided below the cylindrical casing 42a of the pulling drive unit 42 and that is rotatable about the support shaft on the frame unit 50, and a valve sleeve 47b that is opened and closed by operating the trigger 47a. A first conduit 47c disposed between the valve sleeve 47b and the air switching mechanism 46c, and a second conduit disposed between the cylindrical casing 42a and the air switching mechanism 46c. 47f.
[0043]
The valve sleeve 47b is closed when the trigger 47a is not operated (that is, the trigger (trigger 47a) is not pulled), and is closed when the trigger 47a is operated. It is configured to be in a valve state. When the valve sleeve 47b is closed, high-pressure air is supplied into the cup 45a by the opening / closing operation of the switching valve 46d provided by pressure balance in the air switching mechanism 46c. When the valve sleeve 47b is opened by the pulling operation (ON operation) of 47a, the switching valve 46d is switched by the change of the pressure balance in the air switching mechanism 46c in this state, so that the high-pressure air flows into the air piston 45b in the cup 45a. It is supplied to the lower side.
[0044]
Therefore, when the trigger 47a is not pulled, high-pressure air from the air source 46a is not supplied to the cup 45a in a predetermined open / close state of the switching valve 46d. Since the shaft does not operate, the shaft pull-out portion 41 is in a state in which the pull-out operation via the pull-out driving portion 42 is not performed.
[0045]
When the trigger 47a is turned on (pulling) in this state, the valve sleeve 47b is opened and the pressure balance in the air switching mechanism 46c changes, and this change changes the open / close state of the switching valve 46d, and the air from the air source 46a. Since the high-pressure air is supplied to the cup 45a, the air piston rod 44b is moved upward by driving the air piston 45b, and hydraulic pressure is generated by the compression of the hydraulic oil in the oil sleeve 44a. The pin pulling mechanism 41b performs a pulling operation via the pulling drive unit 42.
[0046]
In the riveter 40 of the present embodiment, a cylinder top 48 corresponding to the previous connected member 200 as a structural material is interposed between the hydraulic pressure supply portion 44 and the air cylinder portion 45, and this cylinder A box-shaped cylinder cover 49 that houses an air cylinder portion 45 and an air switching mechanism 46c is fixed to the lower portion of the top 48 with screws or the like.
[0047]
On the other hand, the first pipe line 47c includes a first tube pipe 47d corresponding to the previous tube T piped to the front side of the outer surface of the oil sleeve 44a, and one corner part in front of the cylinder cover 49 (shown in FIG. 4). In the example, the left corner portion) is composed of a first expanding tube 47e extending in the vertical direction formed by expanding outward. The second pipe 47f has a second tube pipe 47g corresponding to the previous tube T piped so as to cross the first tube pipe 47d and the other corner in front of the cylinder cover 49 outward. The second expansion pipe 47h is formed by bulging out toward the bottom.
[0048]
The first projecting edge 48a and the first projecting edge 48a projecting from the edge of the cylinder top 48 are provided between the lower ends of the tube tubes 47d and 47g and the upper ends of the expanded tubes 47e and 47h. Two projecting edges 48b are interposed. A first connection hole 48c and a second connection hole 48d corresponding to the previous connection hole 201 are formed in the projecting edges 48a and 48b, and the present invention described above is provided in these connection holes 48c and 48d. The lower ends of the tube tubes 47d and 47g are connected and fixed by the method.
[0049]
The upper end portion of the second tube pipe 47g is connected to the cylindrical casing 42a. The high-pressure air from the air source 46a supplied to the air switching mechanism 46c via the air tube 46b is configured to be always supplied into the cylindrical casing 42a via the second conduit 47f. With this air pressure, predetermined parts of the hydraulic cylinder mechanism 42b are always pressed, and this usually promotes the pressing force required to direct the predetermined parts of the pin pulling mechanism 41b forward (to the right in FIG. 5). It is like that.
[0050]
According to the riveter 40 to which such a fixing method is applied, the tube tubes 47d and 47g are connected to the connection holes 48c and 48d of the cylinder top 48 without using the expensive tube joint 100 (FIG. 6) that has been used conventionally. This can contribute to the reduction of parts costs and can also reduce the assembling cost only by the rivet process, thereby reducing the manufacturing cost of the riveter 40. Reduction can be achieved.
[0051]
The present invention is not limited to the above embodiment, and includes the following contents.
[0052]
(1) In the above embodiment, the riveter 40 is exemplified as the connected member 200 to which the tube T is connected. However, the present invention is not limited to the connected member 200 being the riveter 40. As long as it is a member to which the tube T is to be connected and is formed of a rigid body, any member can be applied as the connected member 200.
[0053]
(2) In the above embodiment, the riveter 40 is used to fix the tube T to the connected member 200, but the present invention is limited to using the riveter 40 only for fixing the tube T. It does not wait, and it cannot be used for the original use of the riveter 40 for fixing two members.
[0054]
【The invention's effect】
According to the tube fixing method of claim 1, the shaft portion is inserted into the cylindrical body portion from the side opposite to the flange portion, and the shaft head portion is in contact with the end portion of the body portion. Then, in the rivet setting process, the shaft is relatively fitted from the head side into the tube so that the body part is inscribed in the connection hole of the connected member and the head is brought into contact with the connected member. Then, in the pin pulling process, the tube is pressed against the inner peripheral surface of the connection hole at the outer peripheral surface of the expanded trunk portion by expanding the diameter of the trunk portion by passing the head portion by pulling out the shaft portion. Thus, the tube can be fixed to the connected member.
[0055]
In this way, the tube is fixed to the connected member by performing a simple operation of pulling out the shaft from the rivet body after simultaneously inserting the rivet body and the tube through which the shaft has passed into the connecting hole of the connected member. It is possible to improve the workability of the fixing work compared to the conventional method of fixing the tube using a tube joint, thereby contributing to the reduction of the work cost, Since the tube joint is not used, the parts cost can be reduced.
[0056]
According to the riveter described in claim 2, the tube for fluid movement is provided at a predetermined position of the member to be connected by the tube fixing method according to claim 1, which can reduce both component cost and work cost. Therefore, the manufacturing cost of the riveter can be reduced.
[Brief description of the drawings]
FIG. 1 is a process diagram for explaining each process of a tube fixing method of the present invention.
FIG. 2 is an enlarged explanatory view in cross-sectional view showing an embodiment of a mounting operation in a rivet mounting process, where (a) is a state immediately before the tube and the rivet are inserted into the connection hole of the connected member; ) Shows a state in which both the tube and the rivet are fitted in the connection hole of the connected member.
FIG. 3 is an enlarged explanatory view in cross-sectional view showing an embodiment of a pulling operation in a pin pulling process, in which (a) is pulling out a shaft portion of a shaft inserted into a connection hole of a connected member; , (B) respectively show a state in which the tube is fixed to the connection hole of the connected member.
FIG. 4 is a perspective view showing an embodiment of a riveter to which the tube fixing method of the present invention is applied.
FIG. 5 is a longitudinal sectional view of the riveter shown in FIG. 4;
FIG. 6 is an explanatory view illustrating a conventional tube fixing method.
[Explanation of symbols]
10 rivets 20 rivets
21 torso 22 buttocks
30 Shaft 31 Shaft
32 head 40 riveter
41 Shaft extraction part
41a frame head 41b mechanism
41c Nosepiece 42 Drive unit
42a Tubular casing
42b Hydraulic cylinder mechanism
43 Pin ejector 43a Frame cap
44 Hydraulic supply part 44a Oil sleeve
44b Air piston rod 45 Air cylinder
45a Cup 45b Air piston
46 Air pressure supply part 46a Air source
46b Air tube (air hose)
46c Air switching mechanism
47 Operation unit 47a Trigger
47b Valve sleeve 47c First pipe
47d first tube 47e first expansion tube
47f Second pipe 47g Second tube
47h Second expansion pipe 48 Cylinder top
48a First protruding edge 48b Second protruding edge
48c first connection hole 48d second connection hole
49 Cylinder cover 50 Frame unit
51 Frame cover
100 Tube joint 200 Connected member
201 Connection hole
P1 Rivet installation process
P2 pin drawing process
T tube

Claims (2)

The connection hole drilled in the connected member Do that a rigid body a tube fixing method of fixing connecting tube,
From the other end of the rivet body consisting of a tubular body portion with one of the flange portion formed at an end of the body portion, and a head having a Redirecting a listening diameter by the inner diameter of the body portion , using a rivet formed by inserting the integrally connected to concentrically to the head, the shaft comprising a shaft portion having a small again diameter Ri by the inside diameter of the barrel to the rivet body,
A rivet mounting step in which the shaft is relatively fitted into the tube from the head side so that the body portion is inscribed in the tube in the connection hole;
By expanding the diameter of the body part by passing the head part by pulling out the shaft part, the tube is inserted into the connection hole by passing through a pin pulling process in which the tube is pressed against the inner peripheral surface of the connection hole by the outer peripheral surface of the body part. A tube fixing method characterized by connecting and fixing. The tube includes a shaft pull-out portion for pulling out the shaft, a pull-out drive portion that operates the shaft pull-out portion, a hydraulic pressure supply portion that applies a driving force to the pull-out drive portion, and an air cylinder portion that drives the hydraulic pressure supply portion; 2. A tube for an air phase used in a riveter comprising an air pressure supply section for supplying air pressure to drive an air cylinder section, and the connected member is a rigid member of the riveter. Fixing method.

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