JPH04134982U - Installation device for piping fittings - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the means for preventing the connection tool from rotating relative to the mounting plate and to reduce costs. [Structure] The fitting part 16 of the connecting tool 3 has two circular arc parts 16a.
and two flat parts 16b, and when the fitting part 16 is fitted into the mounting hole 2, the rotation of the connector 3 is prevented by the engagement between the flat part 16b of the fitting part 16 and the straight part 2b of the mounting hole 2. thwarted. As a means for forming the fitting part 16, there is a simple method of cutting the outer periphery of the fitting part 16 formed into a circular shape to make it flat. Unlike the case where the engaging piece is fitted into the support hole on the outer periphery of the fitting part and the protruding part is engaged with the notch of the mounting hole, this method does not require the troublesome work of forming the support hole in the fitting part. This is unnecessary and eliminates the need to use an engagement piece as a separate component.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

In this invention, the pipe is connected to one end first, and the other end is connected later. Attach a cylindrical connector with a connecting thread at the other end to which the pipe is connected. A locking surface that fits into a mounting hole formed in a plate and is perpendicular to the axis formed on the outer periphery of the connection tool. A male thread for mounting that is brought into contact with one side of the mounting plate and formed around the outer periphery of the connection tool. Screwing a tightening nut onto the mounting plate and squeezing the mounting plate between the tightening nut and the locking surface. Regarding the mounting device for piping fittings that fixes the fittings to the mounting plate. It is something.

0002

[Conventional technology]

As one example of the use of the above-mentioned piping fitting installation equipment, air in a dryer that dehumidifies the air and sends it out as dry air. It may be used as an intake connection or an output connection. How to do piping in this case At the stage of assembling the dryer, the connectors are fixed to the mounting plate and the Connect the pipe that runs inside the dryer to one end of the connector, and then assemble it. After installing the dryer with the It is designed to connect the pipe that runs outside the dryer.

0003 When connecting the pipe to the connecting thread at the other end of this fitting, Screw the nipples together and tighten with a spanner to secure the pipe to the nipples. This is done by following the steps below. During this work, use a tool such as a wrench to tighten the connectors. The nipple should be tightened while being held in place so that it does not rotate. Some people may be able to screw in the nipple without securing the fitting with a spanner, etc. be.

0004 At this time, the outer periphery of the mounting hole on the mounting plate and the connection fitting inserted into the mounting hole should be circular. If it is, the tightening force of the nipple will overcome the squeezing force of the tightening nut, and the connection may rotate, in which case the pipe connected to one end of the fitting may It will be twisted and cut.

[0005] In order to avoid this situation, the installation equipment for piping fittings should be Measures are taken to prevent rotation of the mounting plate relative to the mounting plate. Conventionally, as a means of achieving this, the mounting hole was formed by cutting out a part of the hole edge of the circular opening. On the other hand, the connecting tool is supported on the outer periphery of a circle with the same diameter as the mounting hole. A retaining hole is formed and an engaging piece is fitted into the support hole so that the protruding part fits into the cutout of the mounting hole. Align the notch with the engaging piece when the connector is inserted into the mounting hole. A method has been used in which rotation of the connector is prevented by engaging the connector.

[0006]

[Problem that the idea aims to solve]

However, in the conventional method, support holes are formed in the connector before mounting it on the mounting plate. However, during installation, the troublesome work of fitting the engagement piece into the support hole is required. Not only does this require the use of an engaging piece as a separate component, which is time-consuming and time-consuming. The drawback was that it was time consuming and costly.

[0007]

[Means to solve the problem]

In this invention, as a means to solve the above problem, the mounting hole is formed in a non-circular shape. , a non-circular cross-section that is inserted into the mounting hole on the outer periphery of the connector so that it cannot rotate around the axis. It has a configuration in which a section is formed.

[0008]

[Function and effect of the idea]

The piping fitting installation device of the present invention has the above configuration, and the fitting part of the fitting is attached to the mounting hole. When it is inserted into the connector, the fitting part is non-circular, so the connector is prevented from rotating about its axis relative to the mounting plate. Therefore, the fitting Connect the pipe to one end first, then insert the nipple into the connecting thread at the other end of the fitting. When connecting other pipes by screwing them in, do not use tools such as spanners to secure the fittings. Even if the fitting is tightened, the fitting will not rotate and the pipe at one end will be twisted. This prevents the material from being bent and cut.

[0009] An example of a non-circular shape of the mounting hole and the insertion part of the connection tool is to replace a part of the circle with an arc. There is a straight shape, and an example of a means for forming the insertion part into such a shape is a circular shape. There is a simple method of cutting the outer periphery of the shaped fitting part to make it a flat surface.

0010 As described above, according to the present invention, the support hole is not formed on the outer periphery of the connector as in the conventional method. You can do the troublesome work of fitting the engagement piece into the support hole, or you can engage it as a separate part. It is possible to reliably prevent the fitting from rotating relative to the mounting plate without using a piece. It is possible to do so, but it requires less effort before and during installation of the connection tool to the mounting plate. This has the effect of saving time and keeping costs low.

[0011]

【Example】

Hereinafter, a first embodiment of the present invention will be described based on FIGS. 1 and 2. In the figure, reference numeral 1 indicates a mounting plate in which mounting holes 2 are formed. Mounting hole 2 is circular A part of the hole is replaced with a circular arc to form a straight line, and the hole edges are concentric with each other. Two circular arc parts 2a, 2a and two parallel straight parts 2b, 2b corresponding to each other. It is formed by twisting.

0012 Reference numeral 3 indicates a piping connector attached to the mounting plate 1. This connector 3 is It has a cylindrical shape with a hollow 4 for fluid circulation. On the outer periphery of one end of the connecting tool 3 is a connecting male screw whose outer diameter is smaller than the distance between the straight parts 2b and 2b of the mounting hole 2. 5 is formed, and a pipe 6 is inserted into the hollow 4 from one end side of the connector 3. Screw the hub nut 7 fitted onto the pipe 6 onto the male connection thread 5, and The fitted ring 8 is pressed between the pressing surface 7a on the inner circumference of the hub nut 7 and the pressing surface 9 on one end of the connecting tool 3. By sandwiching the pipe 6 in the axial direction between the connectors 3 and 3 to reduce its diameter, the pipe 6 connected to one end for rotation around an axis and immovable in the axial direction. .

[0013] In addition, the other end of the hollow 4 of the connector 3 is provided with a tapered female connection thread (this invention 10 (corresponding to a connecting threaded portion which is a component of the above) is formed. for this connection The female thread 10 has a nipple 11 with male threads 11a and 11b formed on the outer periphery of both ends. A male screw 11a on one end side is screwed together. The other end of this nipple 11 In the section, a pipe 12 different from the pipe 6 is connected to a pipe at one end of the connector 3. 6, connect the hub nut 13 fitted onto the pipe 12 to the nipple 1. By screwing into the male screw 11b of 1, the connection is tightened with a ring (not shown). It is starting to be continued.

[0014] The outer periphery of the other end of the connector 3 has a diameter larger than that of the arc portion 2a of the mounting hole 2. An engaging portion 15 having a regular hexagonal cross section is formed. The area adjacent to one end side of this engaging portion 15 In the position where , 16b, thereby forming a cross-sectional shape that matches the mounting hole 2, and A fitting part 16 is formed with the same width as the thickness of the mounting plate 1. The stepped portion between the outer circumferential surface of the connecting member 3 and the outer surface of the engaging portion 15 is provided at right angles to the axial direction of the connecting tool 3. A locking surface 17 is formed.

[0015] Further, at a position adjacent to one end side of the fitting portion 16, a portion having the same cross-sectional shape as the fitting portion 16 is provided. A male mounting screw 19 having a circular arc portion 19a whose outer periphery is the top of the thread. is formed and is continuous with the flat part 16b of the fitting part 16 of the male mounting screw 19. The portion formed by the screw is a flat portion 19b where the thread is interrupted. And this mounting male A tightening nut 20 for fixing the connector 3 to the mounting plate 1 is screwed into the same 19. It's becoming like that.

[0016] Further, the outer peripheral portion of the connecting device 3 is shaped to have the same regular hexagonal cross section as the engaging portion 15. A bar extruded into a circular shape with a predetermined diameter from one end, leaving the engaging part 15. Cut in the circumferential direction so that and the male mounting thread 19, and then the male mounting thread 19 and the fitting part 16 are assembled. By cutting the flat parts 19b and 1 corresponding to the straight part 2b of the mounting hole 2, 6b. In addition, the molding of the inner peripheral part of the connector 3 The hollow 4 is formed by cutting, and the other end is further cut to form a connecting female. The procedure is to form the screw 10.

[0017] The first embodiment has the above configuration, and when attaching the connector 3 to the mounting plate 1, First, insert only the connecting tool 3 into the mounting hole 2 from one end with the smaller diameter, and align it in a straight line. Insert the flat part 19b of the male mounting screw 19 into the part 2b while slidingly contacting the part 2b, and fit the connector 3. The entry part 16 is tightly fitted into the mounting hole 2, and the locking surface 17 of the connecting tool 3 is inserted into the mounting plate. 1. Next, attach the tightening nut 20 fitted from one end of the connector 3 to the male connector. Screw it into the screw 19 and tighten it, and the tightening nut 20 and the locking surface 17 of the connecting tool 3 The connecting tool 3 is fixed by squeezing the mounting plate 1 between them. .

[0018] The connecting tool 3 attached to the mounting plate 1 in this way has a flat surface of its insertion part 16. Since the portion 16b and the straight portion 2b of the mounting hole 2 are engaged, rotation around the axis is prevented. is being prevented.

[0019] Then, apply the package to one end of the connecting tool 3 attached to the mounting plate 1 by the above-mentioned procedure. pipe 6 is connected, and then another pipe 12 is connected to the other end of the connector 3.

[0020] When connecting the pipe 12 to the other end of the connector 3, the connection of the other end of the connector 3 When screwing the nipple 11 onto the internal thread 10 for tightening, and when tightening the nipple 11, When screwing and tightening the hub nut 13 on the other end, attach the connecting tool 3 to the Although a large rotational force is applied to the connector 3, the engagement between the fitting portion 16 and the mounting hole 2 Since rotation is prevented due to Even if you do not fix the connecting tool 3 by fitting a tool such as, the connecting tool 3 will not rotate, There is no fear that the pipe 6 at one end of the connector 3 will be twisted and cut.

[0021] In addition, in the connector 3 of the first embodiment, the pipe 12 is connected later. The connecting thread on the end side is a female thread, but in this invention, the connecting thread is a male thread. It can also be applied to cases.

[0022] Next, a second embodiment of the present invention will be described based on FIGS. 3 to 5. The bar 21 of the connecting tool 23 in the second embodiment has a regular hexagonal outer surface. The bottom surface is the flat part 24b of the fitting part 24 and the male screw for mounting on two mutually parallel surfaces. The recessed portions 22, 22, which become the flat portion 25b of the same 25, are formed over the entire length in the longitudinal direction. It is extruded into a shape.

[0023] One end of the bar 21 is cut so that the engaging portion 26 remains at the other end. In order from the side, the male connection thread 27, the male mounting thread 25, the fitting part 24, and the locking surface 28 are It is formed.

[0024] When forming the fitting part 24 and the male mounting thread 25, if cutting is performed in the circumferential direction, A part of the bottom surface of the recess 22 previously formed in the bar 21 remains as it is on the flat surface of the insertion part 24. Since these are the surface portion 24b and the flat portion 25b of the male mounting screw 25, those flat portions 24 A separate cutting step to form b, 25b is not required.

[0025] Moreover, in the part of the male mounting thread 25, the thread is removed after the thread is formed. When forming a flat part by cutting, burrs from cutting may enter the groove of the thread. Since there is no fear, there is no need to remove burrs that have entered the grooves of the screws.

[0026] Note that the recesses 22, 22 of the bar 21 remain as they are in the engaging portion 26 of the connector 23. , since the surfaces on both sides of the recessed portion 22 form a regular hexagon together with other surfaces, the engaging portion 2 A tool such as a spanner can be fitted into the hole 6 from either direction.

[0027] Further, a tool such as a spanner can be fitted into the recesses 22, 22. In particular, the fittings This is advantageous when the tool is made of a soft material such as copper, since deformation of the tool engaging portion can be prevented.

[0028] FIG. 6 shows a third embodiment of the present invention. Before cutting this connecting tool 33, the bar material (not shown) has a parallel shape with a part of the circle replaced with an arc. It is extruded into two straight cross-sectional shapes. Two parallel bars The interval between the planes is determined by the interval between the two plane parts 34b, 34b of the fitting part 34 and the male screw for mounting. The dimension is the same as the distance between the two flat parts 35b, 35b of the same 35.

[0029] The connecting tool 3 is formed by cutting this bar material in the circumferential direction, and at this time, For forming the flat part 34b of the fitting part 34 and the flat part 35b of the male mounting screw 35. No separate cutting step is required.

[0030] 7 and 8 show a fourth embodiment of the present invention. The connector 43 of the fourth embodiment can be attached to the connector 23 of the second embodiment described above. This is an improved process for forming the male thread and its flat surface.

[0031] The bar 41 before cutting has a bottom surface on two mutually parallel outer surfaces of the regular hexagon. The recessed part 4 becomes the flat part 44b of the fitting part 44 and the flat part 45b of the male mounting screw 45. 2 and 42 are formed in the length direction, and further, narrow grooves 4 are formed on both sides of the bottom surface of the recess 42. 2a and 42a are formed by extrusion molding.

[0032] Attaching the connecting tool 43 formed by cutting the rod 41 in the circumferential direction In the male screw 45, the arc-shaped threaded portion 45a and the flat portion 45b are The narrow groove 42a of the recess 42 of the bar 41 remains deeper than the trough of the screw at the connection part. However, Then, use a cutting tool to cut the thread groove from the threaded part 45a side to the flat part 45b side. Since the burr generated on the opposite side enters into the narrow groove 42a of the recess 42, the burr forms on the flat surface 45b. It does not protrude to the sides. As a result, burrs protruding toward the flat portion 45b can be removed. There is no need for a process for

[0033] In addition, in each of the above embodiments, the mounting hole and the fitting part are arranged in two positions corresponding to each other. By creating a cross-sectional shape consisting of a concentric circular arc part and two corresponding straight parts, However, according to the present invention, the mounting hole and the fitting are prevented from rotating. The shape of the part shall be any other shape other than circular as long as it can prevent rotation. It is also possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a mounting plate and a connector according to a first embodiment.

FIG. 2 is a sectional view of the attached state of the first embodiment.

FIG. 3 is a perspective view of the connector of the second embodiment in a state before molding.

FIG. 4 is a perspective view of the connector of the second embodiment after molding.

FIG. 5 is a front view of the connector of the second embodiment.

FIG. 6 is a front view of the connector of the third embodiment.

FIG. 7 is a perspective view of the connector of the fourth embodiment in a state before molding.

FIG. 8 is a perspective view of the connector of the fourth embodiment after molding.

[Explanation of symbols]

1: Mounting plate 2: Mounting hole 3, 23, 33, 43: Connection tool 10: Connection female thread (connection thread) 16, 2
4, 34, 44: Fitting portion 17, 28: Locking surface 19, 2
5, 35, 45: Male thread for mounting 20: Tightening nut

Claims (1)

[Scope of utility model registration request] Claim 1: A cylindrical connector having one end to which a pipe is first connected and a connection thread formed at the other end to which another pipe is connected later, is mounted on a mounting plate. A locking surface perpendicular to the axis formed on the outer periphery of the connecting tool is brought into contact with one surface of the mounting plate, and a tightening nut is inserted into the mounting hole formed on the outer periphery of the connecting tool. In the piping fitting mounting device, the fitting is fixed to the mounting plate by screwing together and compressing the mounting plate between the tightening nut and the locking surface,
The mounting hole is formed in a non-circular shape, and the outer periphery of the connecting tool has a
A fitting device for a piping connector, characterized in that a fitting portion having a non-circular cross section is formed in the fitting hole so as not to rotate around an axis.