JP2011112079A - Retaining clip for pipe cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a retaining clip for a pipe cover, allowing a pipe connecting cover to be externally-fitted and connected to the end of a cylindrical cover reliably without requiring the intricately-shaped pipe cylindrical cover, and allowing the cylindrical cover to hardly come off the connecting cover even if strong external force is applied to a coming-off side. <P>SOLUTION: This retaining clip 7 preventing the pipe cylindrical cover 1 from relatively coming off the pipe connecting cover 2 includes: an outer tongue piece 8 and an inner tongue piece 9 which sandwich the end of the cylindrical cover 1; and a connecting portion 10 for connecting both the tongue pieces. The outer tongue piece 8 is provided with a retaining portion 8b abutting on a stopper 14 protruded from the inner peripheral surface of the connecting cover 2 and projecting outward in order to prevent the cylindrical cover 1 from relatively coming off the connecting cover 2. At least one of the outer tongue piece 8 and inner tongue piece 9 is provided with claws 8a, 9a bitten into the cylindrical cover 1 by pressing force applied from the stopper 14 to the retaining portion 8b in association with the relative movement of the cylindrical cover 1 and connecting cover 2 to the falling-out side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a piping cover retaining clip used for preventing relative disconnection between a tubular cover for piping and a connection cover for piping that is externally connected to the end of the tubular cover. About.

  In order to prevent such a relative disconnection between the cylindrical cover and the connection cover, conventionally, a plurality of grooves along the longitudinal direction of the cylindrical cover are formed on the outer periphery of the cylindrical cover, and the plurality of grooves A retaining member made of soft resin is inserted and held inside, and a plurality of protrusions are provided on the inner peripheral surface of the connection cover so that the insertion member on the cylindrical cover side and the protrusion on the connection cover side are in contact with each other. A configuration is known in which the cylindrical cover and the connection cover are prevented from coming off relative to each other by contact (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-31393

However, in the prior art described in the above publication, in addition to requiring a fitting member for retaining, a plurality of grooves for fitting the fitting member on the outer periphery of the cylindrical cover are required, and the shape of the cylindrical cover is There is a drawback that the tube cover becomes expensive due to the complexity.
Furthermore, since the retaining member for retaining is elastically fitted in the groove of the cylindrical cover and is held by the frictional force, a strong external force is exerted between the tubular cover and the connection cover on the slipping side. If it acts, there is a possibility that the fitting member is detached from the groove and the connection between the cylindrical cover and the connection cover is disconnected, and there is also room for improvement in this respect.

  The present invention pays attention to such a conventional problem, and its purpose is to connect a pipe connection to the end of the cylindrical cover without requiring a complicated pipe cover for the pipe. To provide a retaining clip for a pipe cover that can securely fit and connect the cover, and the cylindrical cover and the connecting cover do not easily come off even if a strong external force acts on the removal side. is there.

  A first characteristic configuration of the present invention is a pipe used for preventing relative disconnection between a tubular cover for piping and a connection cover for piping that is externally connected to the end of the tubular cover. A clip for retaining the cover, wherein the clip connects an outer tongue piece and an inner tongue piece that sandwich the end portion of the cylindrical cover from the outside and the inside, and a connecting portion that connects the base end portions of both tongue pieces to each other The outer tongue piece comes into contact with a stopper projecting on the inner peripheral surface of the connection cover, and the tubular cover and the connection cover are relatively removed. A retaining portion projecting outward to prevent the outer tongue piece and the inner tongue piece from moving away from the stopper as the tubular cover and the connection cover move toward the relative withdrawal side. The cylindrical cover bites in with the pressing force applied to the retaining part In the place which is equipped with a performance of the claw portion.

According to the first characteristic configuration of the present invention, the tubular cover for piping and the connection cover for piping that is externally connected to the end of the tubular cover are used to prevent relative disconnection. The piping cover retaining clip includes an outer tongue piece and an inner tongue piece for holding the end portion of the cylindrical cover from the outside and the inside, and a connecting portion for connecting the base end portions of both tongue pieces to each other in a side view. The outer tongue is abutted against a stopper projecting on the inner peripheral surface of the connection cover and protrudes outward to prevent the cylindrical cover and the connection cover from coming off relative to each other. Since it has a retaining part, the retaining cover can be prevented from coming off simply by clamping the retaining clip to the end of the tubular cover using the outer and inner tongues. .
Therefore, it is not necessary to provide a groove or the like that contributes to preventing the cylindrical cover from coming off, and the shape of the cylindrical cover can be simplified to reduce the cost of the cylindrical cover.
Then, at least one of the outer tongue piece and the inner tongue piece can bite into the cylindrical cover with a pressing force applied from the stopper to the retaining portion as the tubular cover and the connection cover move relative to the removal side. Therefore, even if a strong external force acts on the removal side, the cylindrical cover and the connection cover are not easily detached by the biting of the claw portion into the cylindrical cover.

  According to a second characteristic configuration of the present invention, the outer tongue piece includes an outer claw portion that projects obliquely inward toward the connection portion side so as to bite into an outer peripheral surface of the cylindrical cover, and the inner tongue piece In order to bite into the inner peripheral surface of the cylindrical cover, there is an inner claw portion that protrudes obliquely outward toward the connecting portion side.

According to the second characteristic configuration of the present invention, the outer tongue piece includes the outer claw portion that obliquely protrudes inward toward the connecting portion side so as to bite into the outer peripheral surface of the cylindrical cover, and the inner tongue piece is a cylinder. Because it has an inner claw that protrudes obliquely outward toward the connecting part to bite into the inner peripheral surface of the cover, it can be connected to the cylindrical cover regardless of the pressing force applied from the stopper to the retaining part The connection of the cover can be held firmly.
That is, the pressing force applied from the stopper to the retaining portion as the cylindrical cover and the connection cover move relative to each other is not limited in its strength, and the direction in which it acts is not constant. Although the outer tongue is provided with the outer claw and the inner tongue is provided with the inner claw, the outer claw and the inner claw are not affected regardless of the direction of the pressing force. At least one of them is likely to bite into the cylindrical cover, and the connection between the cylindrical cover and the connection cover can be firmly held.

  According to a third characteristic configuration of the present invention, the outer tongue piece includes a plurality of outer claw portions along the lateral width direction, and the inner tongue piece includes a plurality of inner claw portions along the lateral width direction. It is in place.

  According to the third characteristic configuration of the present invention, the outer tongue piece includes a plurality of outer claw portions along the lateral width direction, and the inner tongue piece includes a plurality of inner claw portions along the lateral width direction. Therefore, these multiple claw portions not only enable powerful biting into the cylindrical cover, but also more reliably cope with changes in the direction of the pressing force applied from the stopper to the retaining portion. be able to.

  According to a fourth characteristic configuration of the present invention, the plurality of outer claw portions and the plurality of inner claw portions are arranged so as to be staggered with a phase shift along the lateral width direction and intersect each other in a side view. It is in place.

  According to the fourth characteristic configuration of the present invention, the plurality of outer claw portions and the plurality of inner claw portions are arranged in such a manner that they are shifted in phase along the lateral width direction and intersect each other in a side view. In other words, as described above, as described above, a plurality of outer claws protruding obliquely inward toward the connecting portion and a plurality of inner claws protruding obliquely outward toward the connecting portion. Are arranged so as to cross each other when viewed from the side, so that the outer claw and the inner claw have already bite into the cylindrical cover with the retaining clip held between the ends of the cylindrical cover. Therefore, when the retaining clip is securely clamped to the end of the cylindrical cover, and when the pressing force is applied from the stopper to the retaining portion due to the movement of the tubular cover and the connection cover to the withdrawal side, Cut into the connection cover more firmly, It will reliably prevent leakage of the connection cover.

Overall view of air conditioner with piping cover Vertical side view of the main part of the piping cover Perspective view, front view, rear view, and longitudinal side view of retaining clip Exploded perspective view of the main part of the piping cover Vertical side view of the main part of the piping cover for explaining the action of the retaining clip Front view, rear view, and longitudinal side view of a retaining clip according to another embodiment Front view, rear view, and longitudinal side view of a retaining clip according to another embodiment

An embodiment of a retaining clip for a piping cover according to the present invention will be described with reference to the drawings.
The piping cover to which the present invention is directed covers, for example, piping C such as various air conditioning pipes and electric wires connecting the indoor unit A and the outdoor unit B of the air conditioner as shown in FIG. The piping C extends from the indoor unit A and is arranged along the ceiling of the building. After passing through the wall W of the building, the piping C is arranged in the vertical direction along the outer surface of the wall W. It is installed and connected to the outdoor unit B.
As a piping cover for covering the piping C, a straight cylindrical cover 1 made of synthetic resin is usually used, and the cylindrical cover 1 is an elbow as a connection cover 2 for piping made of synthetic resin. A terminal cover 2c for reducing the diameter, which is an example of a connection cover 2 for piping made of synthetic resin, is connected to the end of the cylindrical cover 1 through the cover 2a and the connecting cover 2b. The piping C is extended from the terminal cover 2c.

As shown in FIGS. 2 and 4, the cylindrical cover 1 is composed of a pair of half-split covers 3 and 4 that can be fitted and connected to each other. As for the cylindrical cover 1 that is suspended and held on the ceiling and disposed outside the room, one half cover body 3 is fixedly held on the wall W via the fixing bracket 6, and the one half cover body 3 On the other hand, the other half cover body 4 is fitted and connected, and if necessary, both the half covers 3 and 4 are firmly connected to each other by appropriate means not shown.
The elbow cover 2a, the connecting cover 2b, and the terminal cover 2c as the connection cover 2 for piping are externally connected to the end of the cylindrical cover 1 in a state of preventing relative disconnection, and used at that time. What is to be done is a retaining clip 7 according to the invention.

Hereinafter, the retaining clip 7 will be described, and the connection structure of the cylindrical cover 1 and the connection cover 2 will be referred to. However, the connection cover 2 is different in shape only, and the configuration for connection is the same. The elbow cover 2a will be described as an example.
The retaining clip 7 is formed by punching spring steel, for example, and as shown in FIG. 3, an outer tongue piece 8 and an inner tongue piece that elastically sandwich the end of the cylindrical cover 1 from the outside and the inside. 9 and a connecting portion 10 that connects the base end portions of both tongue pieces 8 and 9 to each other, and is formed in a substantially U shape in a side view.
The two tongue pieces 8 and 9 are bent obliquely from the connecting portion 10 toward the free end side so that the substantially central portions in the insertion direction (vertical direction) are close to each other, and the free end portions 8b and 9b are Opened in the shape of a letter C so as to be separated from each other, the free end portion 8a of the outer tongue piece 8 is configured to function as a retaining portion described in detail later.

The outer tongue piece 8 of the retaining clip 7 is integrally provided with a plurality of (two in the embodiment of FIG. 3) outer claw portions 8a along the lateral width direction, and the outer claw portion 8a is a cylindrical cover. 1 is provided so as to protrude obliquely inward toward the connecting portion 10 so as to bite into the outer peripheral surface.
The inner tongue piece 9 is also integrally provided with a plurality of (three in the embodiment of FIG. 3) inner claw portions 9a along the width direction, and the inner claw portion 9a is an inner peripheral surface of the cylindrical cover 1. It is provided so as to protrude obliquely outward toward the connecting portion 10 so as to bite into.
The two outer claw portions 8a and the three inner claw portions 9a are arranged so as to be out of phase with each other along the width direction, more specifically, staggered along the width direction, and As apparent from FIG. 3 (d), the outer claw portion 8a and the inner claw portion 9a are arranged so as to cross each other in a side view.

As shown in FIGS. 2 and 4, an elbow cover 2a, which is an example of a connection cover 2 for piping, is composed of a pair of left and right half cover bodies 11, 12 that can be fitted and connected to each other. 11 and 12 are configured to be fixable to each other by a connecting fitting 13 such as a bolt, and a flange 14 that functions as a stopper is integrally formed on the inner peripheral surface of the opening end portion connecting the cylindrical cover 1. Projected to
On the inner peripheral surface of each half cover body 11, 12, there are a plurality of strip-shaped rattle prevention portions 15 that are long along the connecting direction of the cylindrical cover 1 and the connecting cover 2 (see FIG. 2 and FIG. 2). In the embodiment shown in FIG. 4, two stoppers are provided integrally, and a stopper portion 16 for restricting the insertion length of the cylindrical cover 1 is provided near the back end of the backlash prevention portion 15. 15 projecting integrally along the circumferential direction so as to be substantially orthogonal to 15.

Next, the construction procedure for connecting the cylindrical cover 1 and the connection cover 2 using the retaining clip 7 and the connection structure thereof will be described taking the connection of the cylindrical cover 1 and the elbow cover 2a as an example.
First, with the piping C inserted, the cylindrical cover 1 disposed indoors is suspended and held on the ceiling by the hanging metal fitting 5, and the half cover body 3 of the cylindrical cover 1 disposed outside the room is suspended. Is fixed to the wall W by the fixing bracket 6 and the other half-split cover body 4 is fitted and connected to one half-split cover body 3 with the piping C inserted therein. The bodies 3 and 4 are firmly connected by appropriate means.
One or more clips 7 are attached to the upper end of one half cover body 3 before or after the other half cover body 4 is fitted and connected. That is, as shown in FIGS. 4 and 5, the clip 7 is attached so that the outer tongue piece 8 is located outside the half cover body 3 and the inner tongue piece 9 is located inside the half cover body 3. The clip 7 can be easily attached by the guiding action of the free end portions 8b and 9b of the tongue pieces 8 and 9 that are open in a C-shape.

Thereafter, as shown in FIGS. 2 and 4, a pair of left and right halved cover bodies 11 and 12 constituting the elbow cover 2a are spread over the cylindrical cover 1 disposed indoors and the cylindrical cover 1 disposed outdoor. Then, both the half cover bodies 11 and 12 are connected and fixed by the connecting metal fitting 13 by external fitting connection to the respective end portions.
In this connected and fixed state, due to the difficulty in construction accuracy, the upper end portion of the outdoor cylindrical cover 1 usually does not reach the stopper portion 16 as shown in FIG. The free end portion 8b of the outer tongue piece 8 that functions as a portion does not contact the flange 14 of the elbow cover 2a that functions as a stopper, and there is a gap between the free end portion 8b and the flange 14.
However, since the plurality of rattling prevention portions 15 protruding from the inner peripheral surface of the elbow cover 2a are interposed in the circumferential direction between the outer peripheral surface of the cylindrical cover 1 and the inner peripheral surface of the elbow cover 2a. Rattle between the cover 1 and the elbow cover 2a is reliably prevented, and the outer claw portion 8a and the inner claw portion 9a are separated from the outer peripheral surface and the inner Since it bites into the surface, the clip 7 is reliably prevented from falling off.

In this connected and fixed state, for example, when the cylindrical cover 1 and the elbow cover 2a move relative to each other due to some external force such as an earthquake or strong wind, the cylindrical cover 1 tries to enter the elbow cover 2a more than necessary. The upper end portion of the cylindrical cover 1 abuts against the stopper portion 16 and further entry is prevented.
On the contrary, when the cylindrical cover 1 and the elbow cover 2a are moved relative to each other, the free end portion 8b of the outer tongue piece 8 and the flange 14 of the elbow cover 2a come into contact with each other as shown in FIG. Thus, the relative removal of the cylindrical cover 1 and the elbow cover 2a is prevented.
In addition, at that time, as the cylindrical cover 1 and the elbow cover 2a move toward the relative withdrawal side, the free end portion of the outer tongue 8 from the flange 14 as shown by the arrow in FIG. 5 (b). A pressing force is applied to 8 b, and either one or both of the outer claw portion 8 a of the outer tongue piece 8 and the inner claw portion 9 a of the inner tongue piece 9 is applied to either the outer peripheral surface or the inner peripheral surface of the cylindrical cover 1. Since either one or both of them are bitten, the relative removal of the cylindrical cover 1 and the elbow cover 2a is more reliably prevented.

[Another embodiment]
Next, another embodiment of the retaining clip according to the present invention will be described. However, in order to avoid redundant description, the description of the configuration described in the previous embodiment and the configuration having the same action is omitted by indicating the same reference numerals. Then, the configuration different from the previous embodiment will be mainly described.

(1) In the previous embodiment, the outer tongue piece 8 of the retaining clip 7 and the free end portions 8b, 9b of the inner tongue piece 9 were separated from each other and opened in a C shape. 6, only the free end portion 8b of the outer tongue piece 8 can be configured to face outward. Further, as shown in FIG. 6, the outer claw portion 8a and the inner claw portion 9a are arranged in the lateral width direction. Without shifting the phase, the phase is slightly shifted in the insertion direction (longitudinal direction) one by one, and the inner claw portion 9a is shortened so that both the claw portions 8a and 9a do not cross each other in side view. It can also be set up.
Moreover, as shown in FIG. 7, the outer claw part 8a and the inner claw part 9a are provided one by one, and a plurality of sharp parts can be provided at the tip of each claw part 8a, 9a. As shown in FIG. 7, the outer claw portion 8a and the inner claw portion 9a can be arranged with a large phase shift in the insertion direction (vertical direction) of the tongue piece.

(2) As apparent from the above description, the number and shape of the claw portions 8a, 9a provided on the outer tongue piece 8 and the inner tongue piece 9 are arbitrary, and any of the outer tongue piece 8 and the inner tongue piece 9 It can also carry out by providing a nail | claw part in either.
Further, the retaining clip 7 does not necessarily need to be formed by punching spring steel, and can be formed of various metals other than spring steel, synthetic resin, and the like. It is also possible to attach two or more retaining clips 7 to the end of the cover 1.
Further, as specific examples of the connection cover 2 for piping, an elbow cover 2a, a connection cover 2b, and a terminal cover 2c for reducing the diameter are shown, but other than that, for example, a connection cover for different diameters or T It can be applied to various connection covers such as a mold connection cover.

DESCRIPTION OF SYMBOLS 1 Cylindrical cover for piping 2 Connection cover for piping 7 Retaining clip 8 Outer tongue piece 8a Outer claw part 8b Retaining part 9 Inner tongue piece 9a Inner claw part 10 Connection part 14 Stopper

Claims (4)

A piping cover retaining clip used to prevent relative disconnection between a tubular cover for piping and a connection cover for piping that is externally connected to the end of the tubular cover,
The clip is provided with an outer tongue piece and an inner tongue piece for clamping the end portion of the cylindrical cover from the outside and the inside, and a connecting portion for connecting the base end portions of both tongue pieces to each other. Formed into a shape,
The outer tongue piece has a retaining portion projecting outward to abut against a stopper projecting on the inner peripheral surface of the connection cover and to prevent the cylindrical cover and the connection cover from being detached relative to each other,
At least one of the outer tongue piece and the inner tongue piece can bite into the cylindrical cover with a pressing force applied from the stopper to the retaining portion as the tubular cover and the connection cover move relative to the removal side. Retaining clip for the piping cover with a special claw.   The outer tongue piece includes an outer claw portion that obliquely protrudes inward toward the connecting portion side so as to bite into the outer peripheral surface of the cylindrical cover, and the inner tongue piece is formed on the inner peripheral surface of the cylindrical cover. The retaining clip for a piping cover according to claim 1, further comprising an inner claw portion that obliquely protrudes outward toward the connecting portion side so as to bite in.   The piping according to claim 2, wherein the outer tongue piece includes a plurality of the outer claw portions along a lateral width direction thereof, and the inner tongue piece includes a plurality of the inner claw portions along a lateral width direction thereof. Cover retaining clip.   The plurality of outer claw portions and the plurality of inner claw portions are arranged so as to be staggered with a phase shift along the lateral width direction so as to intersect each other in a side view. Retaining clip for the piping cover.

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