JP3167960B2 - Protective cover for refrigerant pipe for air conditioner and its device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective cover for a refrigerant pipe for an air conditioner having a connection port for a protective duct for accommodating and protecting a straight pipe portion of a refrigerant pipe for an air conditioner piped along a wall surface, and It concerns the device.

[0002]

2. Description of the Related Art A refrigerant pipe for an air conditioner is connected between an outdoor unit and an indoor unit, and a straight portion thereof is piped along a wall surface of a building. The straight portion of the refrigerant pipe is housed and protected in a protection duct fixed to the wall surface, and the bent part, the branch part, the lead part, and the like of the refrigerant pipe are housed in the protection cover. And the end of the protection duct is
It is connected to the protective cover.

In such a protective cover, a socket cover corresponding to the size of the protective duct is attached to a connection port thereof in order to enable connection of various sizes of protective ducts having different capacity of refrigerant tubes. Like that. The socket cover is connected to a first port of the protective cover.
It has a connecting part and a second connecting part connected to the end of the protective duct, and the size of the second connecting part differs according to the size of the protective duct.

[0004] As one of the above-mentioned protective cover and socket cover, one disclosed in Japanese Utility Model Laid-Open Publication No. 4-44593 is known. However, the socket cover disclosed in this publication is composed of a base and a divided body with a lid covered by the base, and the base and the lid sandwich the end of the protective duct. Connect.

As described above, the socket cover connected to the connection port of the conventional protective cover is composed of two parts.
As the number of parts increases, two parts need to be manufactured, which leads to high costs and a troublesome connection work. In addition, since the connection structure between the socket cover and the protection duct sandwiches the end of the protection duct with the socket cover, the connection end of the protection duct rises from the wall by the thickness of the base of the socket cover. However, there is a problem that the installation state is unstable.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional protective cover, the present invention makes it possible to connect protective ducts of different sizes stably and easily using a single-piece socket cover. The challenge is to provide a safe protective cover.

[0007]

Means for Solving the Problems A first means adopted in the present invention for solving the problems is a refrigerant pipe for an air conditioner, which comprises a base and a lid, and is piped along the wall of the building. In the protective cover of the refrigerant pipe for an air conditioner provided with at least one connection port to which a protection duct for housing and protecting the straight pipe portion can be connected, a plurality of types having different sizes are provided in a portion constituting the connection port on the base. Each of the protective ducts is fitted into a protective duct, and a tapered step-like positioning piece for positioning along the width direction of the protective duct is formed so as to protrude in a connecting direction, and further, at a connection port to which the protective duct can be connected. Is that when a protection duct smaller in size than the connection port is connected, a socket cover connected to an end of the protection duct can be connected.

A second means employed by the present invention is a protective cover device for an air conditioner refrigerant pipe comprising the protective cover and a socket cover connected to a connection port of the protective cover. At one end of the cover,
A first connection portion connectable to a connection port of the protection cover is formed, and the other end portion is externally fitted to an end portion of the protection duct in which the positioning piece is inserted and positioned in the width direction. That is, the second connection portion is formed.

[0009] The pipe route of the refrigerant pipe is defined on the wall of the building,
A base of the protective cover is fixed to a bent portion, a branch portion, a drawer portion, and the like of the refrigerant tube. Next, the bottom plate at the end of the base constituting the protection duct is inserted below a tapered step-like positioning piece provided at a connection port of the base of the protection cover, and the positioning piece is inserted into the protection duct. Is positioned in the width direction of the base of the protective duct with respect to the protective cover. Subsequently, refrigerant pipes are piped and housed in the bases of the protective duct and the protective cover, and after the lid is covered on the base of the protective duct, a protective duct having a size smaller than the connection port of the protective cover is formed. In the case of connection, the connection port of the base of the protective cover is covered with a socket cover having a single structure, and finally, the lid is covered with respect to the base of the protective cover.

As described above, only the bottom plate portion of the base constituting the protection duct is inserted below the tapered stepped positioning piece provided at the connection port of the base of the protection cover. Is positioned in the width direction, and a socket cover having a single structure is connected to the connection port of the protective cover. This simplifies the connection between multiple types of protection ducts of different sizes and the protection cover, and at the same time, the base of the connection part of the protection duct is in close contact with the wall, and the base of the protection duct is connected to the base as in the conventional structure. Since no gap is formed between the wall and the wall, the connection state is stabilized.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to examples. FIG. 1 is an overall perspective view of a building wall showing a state in which a branch portion of a refrigerant pipe P for an air conditioner (hereinafter, simply referred to as a “refrigerant pipe”) is protected by using a protective cover C and a socket cover S according to the present invention. FIG. 2 is a partially enlarged perspective view of a portion including the protective cover C and the socket cover S, and FIG.
And is an exploded perspective view of a protective duct D _1, FIG. 4 is a perspective view of the base Ca constituting the protective cover C, 5,
FIG. 4 is a plan sectional view of a portion of a protective cover C that accommodates a refrigerant pipe P in a branched state. As shown in FIG. 1, each indoor unit adjacent to the first floor of the building has an indoor unit 1 of an air conditioner.
The outdoor unit 2 of the air conditioner is installed outdoors close to the wall surface Wa of the building. On the wall surface Wa of the building, three large and small protective ducts D ₁ and D ₂ having different refrigerant pipe accommodating spaces are attached so as to cross each other in a T-shape, and each of the three protective ducts arranged in a T-shape is provided. The intersection of the ducts D ₁ and D ₂ is connected via the protective cover C and the socket cover S according to the present invention. The refrigerant pipe housing space of the protection duct D ₁ is
Greater than that of the other protective duct D _2, the refrigerant pipes P of large number of which are housed in protective ducts D _1, the protective cover C
Is of divided internally, yet is branched in opposite directions, are respectively housed in separate protection duct D _2.
In FIG. 1, reference numeral 3 denotes a terminal cover that covers the refrigerant pipe P drawn out of the indoor unit 1 to the outside.

Next, the protective cover C and the socket cover S for connecting each of the three large and small protective ducts D ₁ and D ₂ having different refrigerant tube accommodating spaces in a T-shape will be described. 3 to 5, a protective cover C includes a base Ca fixed to a wall surface Wa, and a cover Cb covered by the base Ca.
The planar shapes of the base Ca and the lid Cb are all T-shaped. As shown in FIGS. 2 and 5, the protective cover C, which is formed by covering the base Ca with the lid Cb, has connection ports 4 at positions corresponding to the three ends of the letter "T". Is formed. The base Ca has a flat peripheral wall 6 formed on a linear peripheral edge formed on the bottom plate 5.
a and a pair of arc-shaped peripheral walls 6b formed on a pair of arc-shaped peripheral edges formed on the bottom plate portion 5, respectively.

Each of the connection ports 4 on the base Ca
Are formed on the refrigerant pipes P, respectively.
Are formed integrally with the bottom plate portion 5 so as to protrude in the connection direction. The positioning piece 7 is a member for performing positioning along the width direction of a plurality of types of protection ducts having different sizes connected to the protection cover C. The positioning piece 7 of this embodiment is formed with three types of positioning portions 7a, 7b, 7c tapered and stepped so that three types of protection ducts can be positioned, and has the widest positioning of the base end. the opposite edges of the part 7c, each peripheral wall portion 6a, have a peripheral wall portion that is connected to 6b are formed, the peripheral wall portion, for performing the greatest positioning in the width direction of the duct D ₁ of the refrigerant pipe accommodating space It functions as the positioning peripheral wall 6c. As shown in FIGS. 7 and 8, the positioning piece 7 provided on the base Ca has a predetermined height above the bottom surface of the bottom plate portion 5 (each of the protection ducts D ₁ and D ₂ to be described later). At a position higher by the thickness of the bottom plate 18 of the bases D ₁ a and D ₂ a), and a step 8 is formed between the bottom plate 5 of the protective cover C and the positioning piece 7. ing.

Bottom plate 5 of base Ca of protective cover C
The connecting portions of the cover Cb and the peripheral wall portions 6a and 6b are provided with engaging recesses 9 respectively, and the portions of the lid Cb corresponding to the engaging recesses 9 are provided with engaging protrusions 11 respectively.
When the cover Cb is covered with the base Ca (see FIG. 9), the peripheral wall portion of the cover Cb is elastically deformed, and the engagement recess 9 engages with the engagement protrusion 11. Thus, the base Ca and the lid Cb are integrated.

The protective cover C is a cover for protecting the branch portion of the refrigerant pipe P when a large number of refrigerant pipes P are divided into two and branched. The socket cover S is connected to two connection ports 4 through which the refrigerant pipe P divided into two pipes is piped. As shown in FIG. 3, the cover Cb of the protective cover C is covered on the outside of the socket cover S, and the first connecting portion 12 connected to the protective cover C and the small space of the refrigerant pipe housing space are provided. is overmolded on the outside of the protective duct D _2, is composed of a second connecting portion 13 connected with the protective duct D _2, but the cross-sectional shape in all parts is in a U-shape, the The size varies from site to site. That is, the portion of the first connection portion 12 has the same size along the connection direction of the refrigerant pipe P, but the size of the portion of the second connection portion 13 increases sharply toward the opening end. Has become smaller. Also, a step is not formed on the boundary between the first connection portion 12 and the second connection portion 13 when the first connection portion 12 is covered with the cover Cb of the protective cover C. A step portion 14 is provided. Also, the first connection portion 1 of the socket cover S
2 and the inner peripheral surface of the cover Cb of the protective cover C, the engaging projections 15 which are in engagement with each other.
a and an engagement recess 15b. Note that FIG.
4, reference numeral 16 denotes a screw hole provided in the bottom plate portion 5 that forms the base Ca of the protective cover C.

Using the protective cover C and the socket cover S described above, a large number of refrigerant pipes P are branched in a T-shape on the wall surface Wa of the building and piped as follows. . First, a piping path of the refrigerant pipe P is defined on the wall surface Wa of the building, and the T-shaped branch portion of the refrigerant pipe P is provided with a protective cover C.
Is fixed using screws 17. As a result, the protective ducts D ₁ , D ₂ are provided between the positioning pieces 7 projecting from the connection ports 4 of the base Ca and the wall surface Wa.
A gap 19 (see FIG. 7) into which the bottom plate portion 18 constituting the bases D ₁ a and D ₂ a is inserted is formed.

Further, the space for accommodating the refrigerant pipe of the protection duct D ₁ is larger than that of the protection duct D ₂ , and each of the protection ducts D ₁ and D ₂ is a base D fixed to the wall surface Wa. ₁ a, D ₂ a and, the lid D is covering in fitted state to
₁ b, composed of the D ₂ b. In addition, each base D ₁ a, D ₂ a
A bottom plate portion 18 tightly fixed to the wall surface Wa;
And the side wall portions 21 erected at both ends in the width direction of the main body. Then, three connection ports 4 provided in the protection cover C
Of, the portion of the connecting port 4 facing directly below, is connected greater protection duct D ₁ of the refrigerant pipe accommodation space, the remaining two of the connection ports 4 provided in opposing positions along the transverse direction
The small protective duct D ₂ refrigerant tube housing space is connected.

[0018] As Therefore, as shown in FIG. 5, the bottom plate portion 18 constituting the base D ₁ a protective duct D _1, which is formed between the positioning piece 7 and the wall surface Wa facing downward The positioning piece 7 is inserted into the gap 19 so that almost all of the positioning piece 7 is fitted into the base D ₁ a, and both side walls 21 are arranged outside the widest positioning section 7 c of the positioning piece 7. Then, the narrowest flat plate-like portion 21 a (see FIG. 10) formed slightly below the center along the height direction of the side wall portions 21 of the base D ₁ a becomes the widest positioning piece 7. The positioning portions 7c are fitted outside the positioning peripheral wall portions 6c which are erected on both side edges of the positioning portion 7c. Then,
The base D ₁ a protective duct D ₁ is fixed to the wall surface Wa with bis (not shown). In exactly the same way, the protection duct D ₂
Of the bottom plate portion 18 constituting the base D ₂ a of the base member D ₂ a with a gap 19 formed between the positioning piece 7 and the wall surface Wa facing in the horizontal direction.
Into the base D ₂ a, and the both side walls 21 are arranged outside the positioning part 7 a. Then, the base D ₂ a of each protection duct D ₂ is fixed to the wall surface Wa using screws (not shown).

[0019] Thus, each base D ₁ a constituting the protective duct D _1, D _2, and connect the D ₂ a the base Ca protective cover C, and when fixing the wall surface Wa is protected Base C of cover C
by each positioning piece 7 provided on a, for two different types of protection duct D _1, D ₂ of the base D ₁ a of size, the width direction position of the D ₂ a is determined inevitably, its Connection work is simplified. The protection duct D _1, D ₂ of the base D ₁ a,
The bottom plate portion 18 constituting D ₂ a is inserted into the gap 19, and the entire connection portion of the bottom plate portion 18 is in close contact with the wall surface Wa, so that the connection state is stable.

[0020] Subsequently, the protective duct D _1, D ₂ of the base D ₁ a, and D ₂ a, the refrigerant pipe P is accommodated in the pipe to the base in Ca protective cover C. Many refrigerant pipes P accommodated in the base D ₁ a of the protection duct D ₁ are connected to the base Ca of the protection cover C.
Each of the refrigerant pipes P is divided into two and divided into right and left, and the two divided into a small number of refrigerant pipes P are housed in the base D ₂ a of the protection duct D ₂ .

Each of the bases D of the protection ducts D ₁ and D ₂
After covering the lids D ₁ b and D ₂ b with ₁ a and D ₂ a, the connection ends of the _two protection ducts D ₂ arranged in the horizontal direction are covered with the socket cover S, and The first connection portion 12 is fitted to the cover D ₂ b of the protection duct D ₂ . Finally, when the cover Cb is covered with respect to the base Ca of the protective cover C, the portion of the connection port 4 of the cover Cb facing directly below is connected to the larger protection duct D ₁ of the refrigerant pipe housing space. At the same time as the external connection (see FIG. 9), the portions of the connection ports 4 of the cover Cb which face in the horizontal direction are the first connection portions 1 of the socket covers S.
2 (see FIG. 5). As a result, as shown in FIGS. 5, 6, 9 and 10, three different protection ducts D ₁ and D ₂ composed of two types are attached to the protection cover C.
Is connected via a pair of socket covers S, and the refrigerant pipes P are accommodated therein in a branched state. When the cover Cb is covered with respect to the base Ca of the protective cover C, the engaging recess 9 provided in the base Ca and the cover C
b are engaged with each other, and are provided on the engaging protrusion 15a provided outside the first connection portion 12 of the socket cover S and the cover Cb of the protective cover C. The engagement recesses 15b engage with each other, and the three protection ducts D ₁ and D ₂ , the protection cover C, and the two socket covers S are integrated. Note that, unlike the above, each socket cover S is previously fitted inside the opening of the cover Cb of the protective cover C, and the cover Cb in a state where each socket cover S is fitted is attached to the base Ca. You may cover it.

When the protection duct D ₃ for accommodating the two branched refrigerant pipes P has an intermediate size between the protection duct D ₁ and the protection duct D ₂ , as shown in FIG. ,
By using the positioning portion 7b having an intermediate width in positioning piece 7 provided on the base Ca protective cover C, the protective duct D ₃ (more precisely, the base D ₃ a protective duct D ₃₎
May be positioned in the width direction. Incidentally, S 'in FIG. 11 shows a socket cover which corresponds to the size of the protective duct D _3.

As shown in FIG. 12, the tip of the positioning piece 7 and the both ends in the width direction of the central positioning portions 7a and 7b have a height that does not hinder the accommodation of the refrigerant pipe P. When the guide portion 22 is erected, the presence of the guide portion 22 causes the small protective ducts D ₂ , D _2
3. Positioning in the width direction becomes easier. Further, the positioning piece for positioning the protection duct connected to the protection cover in the width direction may have a configuration as shown in FIG. That is, this positioning piece 7 ′
A pair of protruding pieces 23 are protruded in the connection direction at predetermined intervals at a portion of the base Ca of the protective cover C where the connection ports 4 are formed, and the outside of each protruding piece 23 is formed in a step shape. At the same time, the guide portion 2 is
2 is provided.

The number of positioning portions provided on the positioning piece 7 is appropriately determined according to the type of the protection duct to be connected. Further, the above embodiment is an example in which the present invention is applied to a protective cover having a T-shape in plan view for protecting the branch portion of the refrigerant pipe. In addition, the present invention can be applied to a protective cover that protects a bent portion, a drawn portion, and the like of a refrigerant pipe.

[0025]

The protective cover for a refrigerant pipe according to the present invention is fitted into a plurality of types of protective ducts having different sizes at a connection portion of a base constituting the refrigerant pipe with the protective duct, and the protective duct is provided. A tapered stair-like positioning piece for positioning along the width direction is formed so as to protrude in the connection direction, and the bottom plate portion of the base constituting the protection duct is inserted below the positioning piece, The positioning of the plurality of types of protection ducts having different sizes in the width direction is performed only by fitting the positioning pieces into the protection duct, so that the connection work between the protection duct and the protection cover is simplified, and the protection duct is formed. The whole surface of the bottom plate portion of the connection portion of the base is in close contact with the wall surface, and a gap is not formed between the base and the wall surface of the protection duct unlike the conventional structure, so that the connection state is stabilized.

Further, as described above, the combination of the protective cover having the tapered stair-like positioning piece on the base and the single-piece socket cover connected to the connection port of the protective cover makes the protective cover as described above. After connecting the protection duct to the connection port, simply insert the socket cover of a single structure between the connection port of the protection cover and the end of the protection duct, and the protection cover and the size smaller than the connection port of the protection cover Can be connected to a plurality of different types of protective ducts, so that the connection work between them can be simplified, and the manufacturing cost can be reduced because the socket cover can be a single component.

[Brief description of the drawings]

FIG. 1 shows a protective cover C and a socket cover S according to the present invention.
FIG. 3 is an overall perspective view of a building wall showing a state in which a branch portion of a refrigerant pipe P is protected by using FIG.

FIG. 2 is a partially enlarged perspective view of a protective cover C and a socket cover S;

[3] the protective cover C, which is an exploded perspective view of the socket cover S, and protect the duct D _1.

FIG. 4 is a perspective view of a base Ca constituting the protective cover C.

FIG. 5 is a plan sectional view of a portion of a protective cover C that accommodates a refrigerant pipe P in a branched state.

FIG. 6 is a sectional view taken along line XX of FIG. 5;

FIG. 7 is an enlarged view of a portion of a connection port 4 of the protective cover C in FIG.

FIG. 8 is a partial perspective view of the connection port 4 of the base Ca of the protective cover C as viewed from the back.

FIG. 9 is a sectional view taken along line YY of FIG. 5;

FIG. 10 is a sectional view taken along the line ZZ in FIG. 5;

FIG. 11 is a plan view for explaining a positioning operation of a positioning piece 7 provided on a base Ca of the protective cover C.

FIG. 12 is a perspective view of a positioning piece 7 in which guide portions 22 are provided at both ends in the width direction of the positioning portions 7a and 7b at the front end and the center.

FIG. 13 is a perspective view of a positioning piece 7 'including a pair of projecting pieces 23 spaced at a predetermined interval in the width direction.

[Explanation of symbols]

C: protective cover Ca: base Cb protective cover: the lid D ₁ of the protective cover, D _2: refrigerant pipe protection duct P: refrigerant tube S: socket cover Wa: walls 4: protective cover connection port 5: Protection Duct 7, 7 ': positioning piece 12: first connection part of socket cover 13: second connection part of socket cover

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16L 57/00

Claims (2)

(57) [Claims] An at least one connection port, comprising a base and a lid, provided with a protection duct for accommodating and protecting a straight pipe portion of a refrigerant pipe for an air conditioner piped along a wall surface of a building. A protective cover, wherein a portion constituting the connection port of the base is fitted into a plurality of types of protective ducts having different sizes to position the protective duct along a width direction thereof. tapering stepped positioning piece is formed to project in the direction of connection, yet the protective duct connectable connection port, to connect a protective duct smaller size than the connection opening, the end portion of the protective duct A protective cover for a refrigerant pipe for an air conditioner, characterized in that a socket cover connected to the air conditioner is connectable. 2. The protection cover according to claim 1, further comprising: a socket cover connected to a connection port of the protection cover. One end of the socket cover is connectable to a connection port of the protection cover. A first connection portion is formed, and a second connection portion is formed at the other end, the second connection portion being connected to an end portion of the protection duct in which the positioning piece is fitted inside and positioned in the width direction. A protective cover device for a refrigerant pipe for an air conditioner.