JPH04111985U - soft pipe fittings - Google Patents

Abstract

(57) [Summary] [Purpose] Confirm that the inserted length has reached a predetermined amount by checking the state of the indicator protrusion that moves when pushed by the end surface of the soft tube. Furthermore, it reliably prevents the soft tube from coming off. [Structure] A window is opened in the male screw part and an indicator is provided around the tube insertion part. A protrusion protrudes diagonally outward in the tube insertion direction and fits into the window, so that the tip of the indicator protrusion comes out of the window when the inserted length of the soft tube reaches a predetermined length. Configure. A stopper having a ring-shaped base that comes into contact with the tip end surface of the male threaded part, and a protrusion that projects obliquely inward from the base in the direction of soft tube insertion to allow the soft tube to be inserted and prevent it from coming out. Equipped with

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to joints for soft pipes, and is a method for preventing connection failures when connecting soft pipes to joints. It is related to the policy.

0002

[Conventional technology]

Conventionally, as shown in Fig. 10, a pipe insertion part (b) of a body (a) has been used as a joint for a soft pipe. Insert the soft tube (c) into the male thread part (d) on the outside of the tube insertion part. Connect the pipe insertion part (B) through the chuck ring (F) using the cap nut (E) screwed onto the The one that is tightened is widely known.

0003

[Problem that the idea aims to solve]

By the way, with the above conventional method, inserting the soft tube (C) into the insertion part (B) depends on intuition. Since this is done manually, the insertion length of the soft tube (C) (L in Figure 10) may be difficult. or not constant. For this reason, the soft tube (c) may not be fully inserted into the tube insertion part (b). The cap nut (E) may be tightened when the insertion length L is shorter than the specified amount. In this case, water may leak from between the tube insertion part (b) and the soft tube (c) due to a poor connection. Problems such as leakage or the soft tube (c) falling off from the tube insertion part (b) occur.

0004 Also, even if the insertion length L can be set to the specified length during insertion, tighten the cap nut (E). During the process, the soft tube (c) may slip out of the tube insertion part (b) and cause a connection failure. Ru. Therefore, conventionally, the inserted soft tube (c) was pushed in the insertion direction by hand while being tightened with a bag nut. The conventional method was to tighten the holes (H) and (E), but this was difficult to work with, especially when the space was Workability was extremely poor when the space was narrow and it was difficult to use both hands.

[0005] This invention was made with attention to these points, and its purpose is to The insertion length is determined by the indicator protrusion that moves by being pushed against the end surface of the soft tube. The goal is to confirm that the goal has been reached.

[0006] Furthermore, after confirming that the insertion length has reached the specified length, the insertion length is Holding the pipe firmly in place prevents the soft pipe from slipping out and improves connection workability. This is also the purpose.

[0007]

[Means to solve the problem]

In order to achieve the above object, in claim 1, a soft tube inserted into a tube insertion portion of a trunk is provided. The pipe is inserted through the chuck ring using a cap nut screwed onto the male thread on the outside of the pipe insertion part. This assumes a soft pipe fitting that is tightened onto the insertion part. And for this , a window is opened in the male thread part, and an indicator is provided around the tube insertion part. The indicator is connected to a ring part that is fitted onto the tube insertion part so as to come into contact with the end surface of the soft tube. , protrudes obliquely outward from the ring portion toward the soft tube insertion direction, and fits into the window. When the inserted length of the soft tube reaches a predetermined length, the indicator protrusion The tip is configured so that it comes out of the window.

[0008] Further, in claim 2, in addition to the above configuration, a ring that abuts the tip end surface of the male threaded portion is provided. A shaped base body, which protrudes diagonally inward from the base body in the soft tube insertion direction, A configuration including a stopper having a protruding tooth portion that allows the insertion of the material and prevents the material from coming out. It is said that

[0009]

[Effect]

With the above configuration, in claim 1, when the soft tube is inserted into the tube insertion portion, the soft tube The end surface of the indicator touches the ring part of the indicator, and as it is further inserted, the indicator will It moves forward by being pushed by a soft tube.

0010 In that case, when the inserted length of the soft tube reaches a predetermined length, the tip of the protrusion of the indicator will open the window. The protruding tip protrudes and retracts to ensure that the inserted length has reached the specified length. recognized.

[0011] Also, for example, springback of the indicator protrusion or other external force may cause soft The tube may come out, but in claim 2, the protruding tooth part of the stopper prevents this coming out. Since ejection is blocked, the indicator confirms that the insertion length has reached the predetermined amount. After checking, there is no need to keep pushing the soft tube in the insertion direction by hand, which improves the connection work. improves.

0012

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figures 1, 2 and figures Reference numeral 5 indicates a joint for a soft pipe according to an embodiment, and reference numeral 10 indicates a shell, and inside this shell 10 there is a joint for a soft pipe. A fluid passage is provided through it. A wrench locking portion 11 is provided in the center of this body 10. A tube insertion portion 12 is provided on one end side of the tube insertion portion 12, and a tube insertion portion 12 is provided on the outer peripheral side of this tube insertion portion 12. A male threaded portion 13 is provided. Further, 30 is a bag provided on one end side of the body 10. A female threaded portion 31 is provided on the inner circumferential surface of the cap nut 30. The female threaded portion 31 is screwed into the male threaded portion 13 of the body 10. And inside the cap nut 30 The back part has a tapered surface. Furthermore, 20 is a soft tube made of polyethylene. , whose tip passes through the inside of the cap nut 30 and fits onto the tube insertion portion 12 of the body 10. Ru. Between the connecting pipe 20 and the tapered surface of the cap nut 30, there is a projection on the inner circumferential surface. A chuck ring 40 having teeth is provided, and the protruding teeth bite into the outer wall of the soft tube 20. It is crowded.

[0013] That is, when connecting the soft tube 20 to the body 10, the tube insertion portion 12 of the body 10 is connected in advance. Insert the chuck ring 40 into the housing 10, and loosely screw the cap nut 30 onto the Keep it together. In this state, connect the soft tube 20 to the tube insertion portion 12 through the cap nut 30. It is inserted between the back ring 40 and the back ring 40. Then, when the cap nut 30 is further tightened, , the chuck ring 40 is pushed down toward the center by being pressed by the tapered surface of the cap nut 30. , the protruding teeth bite into the circumferential surface of the soft tube 20 to complete the connection.

[0014] A window 13a is opened in the male threaded portion 13. This window 13a is inside the joint. Two are provided at symmetrical positions across the heart axis. In addition, around the tube insertion part 12, An indicator 50 is provided. As shown in Figures 6 and 7, this indicator The ring portion 50 is fitted onto the tube insertion portion 12 so as to come into contact with the end surface of the soft tube 20. 51, projecting obliquely outward from the ring portion 51 toward the soft tube insertion direction, and A pair of protrusions 52, 52 that fit into each window 13a are provided, and the insertion length of the soft tube 20 is When the length L reaches a predetermined amount, the tip of the protruding piece 52 of the indicator 50 is removed from the window 13a. It is configured so that it will come out.

[0015] Further, a stopper 60 is provided around the tube insertion portion 12. Figures 8 and 9 As shown in FIG. a base body 61, protruding diagonally inward from the base body 61 toward the soft tube insertion direction, A large number of protruding teeth 62, 62, which allow the soft tube 20 to be inserted and prevent it from coming out. ・It has.

[0016] Next, the operation of the above embodiment will be explained. The joint is initially in the state shown in Figures 1 and 2. However, as the soft tube 20 is inserted into the tube insertion section 12, the end surface of the soft tube 20 becomes indented. When the indicator 50 comes into contact with the ring part 51 of the indicator 50 and is further inserted, the indicator 50 becomes soft. It moves forward by being pushed by the mass tube 20.

[0017] As shown in FIG. 3, when the insertion length L of the soft tube 20 reaches a predetermined length, the Since the tip of the protruding piece 52 of the indicator 50 comes out from the window 13a, the tip of the protruding piece 52 is This confirms that the insertion length L has reached the predetermined amount. In this state, cap nut 30 When tightened, the connection of the soft tube 20 to the joint is completed, as shown in FIG. child As shown in the figure, it can be confirmed that the insertion length L has reached the specified amount by the protrusion and retraction of the tip of the protrusion. A connection between the tube insertion part 12 and the soft tube 20 is prevented by preventing poor connection at the joint of the soft tube 20. This method reliably prevents problems such as water leakage from the pipes and falling of the soft pipe 20 from the pipe insertion part 12. can be stopped.

[0018] Also, due to the springback of the indicator protrusion 52, the soft tube 20 is pulled out. However, the protruding tooth portion 62 of the stopper 60 prevents this slippage. Therefore, after checking the insertion length L using the indicator 50, remove the soft tube 20 by hand. This eliminates the need to keep pushing in the insertion direction, improving connection work efficiency.

[0019] In the above embodiment, two windows 13a and two protrusions 52 were provided, but one It may be arranged in pairs, or conversely it may be arranged in three or more pairs.

[0020]

[Effect of the idea]

As explained above, according to the soft pipe joint of claim 1, the window is opened in the male thread part. At the same time, an indicator is provided around the tube insertion part, and this indicator is attached to a soft A ring part is fitted onto the tube insertion part so as to come into contact with the end surface of the pipe, and a soft pipe is inserted from the ring part. A soft and flexible protrusion that protrudes diagonally outward toward the insertion direction and that fits into the window. Make sure that the tip of the indicator protrusion comes out of the window when the inserted length of the tube reaches the specified length. Because it is configured to This prevents poor connections at soft pipe joints and prevents leakage between the pipe insertion part and the soft pipe. It is possible to reliably prevent problems such as water or soft pipes falling out of the pipe insertion part. Wear.

[0021] Further, according to the soft pipe joint of claim 2, the lip that comes into contact with the tip end surface of the male threaded portion is further provided. A ring-shaped base and a soft A stopper is provided that has a protruding tooth portion that allows the insertion of the quality tube and prevents it from coming out. Therefore, after confirming that the insertion length has reached the specified length using the indicator, This prevents the soft pipe from coming off due to springback of the indicator protrusion or other external forces. It is no longer necessary to keep pushing the soft tube in the insertion direction by hand, improving connection work efficiency. can be done.

[Brief explanation of drawings]

[Figure 1] Half-sectional side view of the joint before inserting the soft tube,

[Figure 2] Plan view of the joint before inserting the soft tube.

[Figure 3] Half-sectional side view of the joint when inserting the soft tube,

[Figure 4] Half-sectional side view of the joint when the soft pipe connection is completed,

[Fig. 5] Exploded perspective view of a soft pipe and a joint,

[Fig. 6] Front view of the indicator,

[Fig. 7] Vertical side view of the indicator,

[Fig. 8] Front view of the stopper,

[Fig. 9] Longitudinal side view of the stopper,

FIG. 10 is a half-sectional side view showing a conventional soft pipe joint.

[Explanation of symbols]

10 Torso 12 Tube insertion part 13 Male thread part 13a window 20 Soft pipe 30 Cap nut 40 Chuck ring 50 indicator 51 Ring part 52 Projection piece 60 Stopper 61 Substrate 62 Protruding tooth part

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Ken Kudo Address: 1-1-3 Otemachi, Chiyoda-ku, Tokyo Within Yukinzoku Kogyo Co., Ltd. (72) Creator Hisao Hayase Address: 1-1-3 Otemachi, Chiyoda-ku, Tokyo Within Yukinzoku Kogyo Co., Ltd. (72) Creator Kiyoshi Asai Address: 1-1-3 Otemachi, Chiyoda-ku, Tokyo Within Yukinzoku Kogyo Co., Ltd.

Claims (2)

[Scope of utility model registration request] [Claim 1] A joint for a soft tube in which a soft tube inserted into a tube insertion portion of a body is tightened to the tube insertion portion via a chuck ring using a cap nut screwed onto a male threaded portion on the outside of the tube insertion portion. , a window is opened in the male thread part, and an indicator is provided around the tube insertion part, and this indicator is
A soft pipe comprising: a ring part fitted onto the outside of the pipe insertion part so as to come into contact with the end surface of the soft pipe; and a projecting piece that projects obliquely outward from the ring part in the direction of insertion of the soft pipe and fits into the window; A joint for a soft pipe, characterized in that the tip of the protrusion of the indicator comes out of the window when the inserted length of the pipe reaches a predetermined length. 2. A ring-shaped base that abuts the tip end surface of the male threaded portion, and protruding teeth that protrude diagonally inward from the base in the direction of soft tube insertion to allow the soft tube to be inserted and prevent it from coming out. The soft pipe joint according to claim 1, further comprising a stopper having a portion.