CN217109980U - Machine in connecting tube subassembly and air conditioning - Google Patents

Abstract

The utility model provides a connecting pipe component and an air-conditioning indoor unit, wherein the connecting pipe component comprises a connecting pipe, a transition connecting pipe and a joint, and the joint is used for being clamped with a drain pipe of a drainage structure; the first end of the transition connecting pipe is connected with the joint through a clamping hole and a clamping bulge which are matched with each other, and the clamping bulge is inserted in the clamping hole; the second end of the transition connecting pipe is connected with the connecting pipe, the joint and the transition connecting pipe are in spacing connection through a spacing bulge and a spacing recess which are matched with each other, the spacing recess is provided with a first spacing end and a second spacing end which are sequentially arranged along the circumferential direction of the transition connecting pipe, and the spacing bulge is arranged in the spacing recess and is limited between the first spacing end and the second spacing end. The utility model discloses a connecting pipe subassembly has solved the problem that has the circumference drunkenness between the transition connecting pipe among the prior art and the joint.

Description

Machine in connecting tube subassembly and air conditioning

Technical Field

The utility model relates to a domestic appliance field particularly, relates to a machine in connecting pipe subassembly and air conditioning.

Background

The indoor machine of the air conditioner can produce a large amount of condensed water in the refrigerating process, the condensed water needs to be discharged to the outdoor or a sewer pipe through a drainage connecting pipe, and the structural design of the drainage connecting pipe has the following problems: an operator needs to hold the drain pipe with one hand and the bottom case with the other hand, and push the drain pipe forward while rotating the drain pipe, so that the assembly is very difficult. After the drain pipe is assembled in place, the metal clamping hook needs to be clamped on the positioning column on the bottom shell, the metal clamping hook and the positioning column are in interference fit, assembly is difficult, and labor intensity is high. The matching mode of the original drain pipe determines that the assembly of the drain pipe is difficult to realize automation. Because the drain pipe needs to adopt the mode installation of rotatory propulsion, if the power is too big, can lead to the drain pipe to appear pincher trees, have the hidden danger of leaking of breaking.

The connecting pipe assembly comprises a connecting pipe, a transition connecting pipe and a joint, and the joint is connected with the drain pipe through a clamping structure, so that the assembly is facilitated. However, the following problems exist with the connector assembly:

circumferential play exists between the transition connecting pipe and the joint to cause play of the drain pipe;

in order to facilitate clamping, the clamping structure is easy to break due to the structural design and short in service life;

the connecting pipe and the transition connecting pipe are inconvenient to connect and complex to assemble.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a connecting pipe assembly and an air conditioner indoor unit, which can solve the problem of circumferential play between the transition connecting pipe and the joint in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a connection pipe assembly, comprising a connection pipe, a transition connection pipe, and a joint, wherein the joint is used for being clamped with a drain pipe of a drainage structure; the first end of the transition connecting pipe is connected with the joint through a clamping hole and a clamping bulge which are matched with each other, and the clamping bulge is inserted in the clamping hole; the second end of transition connecting pipe is connected with the connecting pipe, and through spacing protruding and spacing sunken spacing connection of mutually supporting between joint and the transition connecting pipe, spacing sunken first spacing end and the spacing end of second that has arranged in proper order along transition connecting pipe's circumferential direction, spacing protruding setting is in spacing sunken and spacing between first spacing end and the spacing end of second.

Furthermore, the limiting protrusion is arranged on the side wall of the joint; spacing sunken setting on transition connecting pipe, spacing sunken first end towards the second end extension by transition connecting pipe along transition connecting pipe's axial direction, and spacing sunken radial direction along transition connecting pipe extends to transition connecting pipe's outer wall by transition connecting pipe's inner wall.

Furthermore, the limiting protrusion is arranged on the side wall of the joint and extends from the first end of the joint to the second end of the joint; spacing sunken setting on transition connecting pipe, spacing sunken first end towards the second end extension by transition connecting pipe along transition connecting pipe's axial direction, and spacing sunken radial direction along transition connecting pipe extends towards transition connecting pipe's outer wall by transition connecting pipe's inner wall.

Further, spacing arch and spacing sunken setting in pairs, spacing arch and spacing sunken be a plurality ofly, and a plurality of spacing archs are arranged along the circumference direction of joint in proper order.

Furthermore, the joint comprises a buckle which is used for being clamped with a clamping groove of the drain pipe, and a pressing part is arranged on the buckle; wherein, be provided with the strengthening rib between buckle and the splenium.

Further, connect including the buckle, the buckle be used for with the draw-in groove joint of drain pipe, the value range of the width of buckle is 7mm to 12 mm.

Furthermore, the transition connecting pipe comprises a connecting pipe section, a connecting bulge is arranged on the side wall of the connecting pipe section, and the connecting bulge is arranged around the connecting pipe section; the connecting pipe section is inserted in the connecting pipe and is in interference connection with the connecting pipe through the connecting bulge.

Further, the connecting bulges are multiple and are sequentially arranged along the axial direction of the connecting pipe section.

According to another aspect of the present invention, an indoor unit of an air conditioner is provided, which comprises the above-mentioned connecting pipe assembly; and the drainage structure is used for discharging condensed water generated by the indoor unit of the air conditioner and comprises a drainage pipe, and the joint of the connecting pipe component is clamped with the drainage pipe.

Further, the drain pipe has the draw-in groove, and the buckle and the draw-in groove joint of joint, the width of draw-in groove equals with the width of buckle, and the value range of the width of draw-in groove is 7mm to 12 mm.

The connecting pipe component of the utility model comprises a connecting pipe, a transition connecting pipe and a joint, wherein the joint is used for being connected with a drain pipe of a drainage structure in a clamping way, and condensed water is discharged from the drain pipe and is discharged outside through the joint and the transition connecting pipe; transition connection pipe's first end and joint are connected through the joint hole and the joint arch of mutually supporting, the joint arch is inserted and is established in the joint hole, connect and transition connection pipe's cooperation of being connected, make the comdenstion water of following drain pipe discharge enter into transition connection pipe through connecting, and connect and transition connection pipe between through the spacing arch of mutually supporting and spacing sunken limit connection, it is inseparable to make transition connection pipe and articulate, the problem of circumference drunkenness can not appear, and then guarantee that the drain pipe can not take place the drunkenness, the reliability of drain pipe has been improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a front view of a joint of a connector assembly according to the present invention;

figure 2 shows a top view of a joint of a connector assembly according to the present invention;

figure 3 shows an isometric view of a joint of a connector assembly according to the present invention;

figure 4 illustrates a front view of a transition connection tube of a connection tube assembly according to the present invention;

figure 5 illustrates a side view of a transition connection tube of a connection tube assembly according to the present invention;

figure 6 illustrates a top view of a transition connection tube of a connection tube assembly according to the present invention;

fig. 7 shows a front view of an air conditioning indoor unit according to the present invention;

fig. 8 shows a side view of an indoor unit of an air conditioner according to the present invention;

fig. 9 shows a top view of an indoor unit of an air conditioner according to the present invention;

fig. 10 shows a partial schematic view of a drain pipe of an air conditioning indoor unit according to the present invention;

figure 11 illustrates a front view of a seal ring of a connector tube assembly in accordance with the present invention;

figure 12 illustrates a top view of a seal ring of a connector tube assembly in accordance with the present invention; and

figure 13 illustrates a side view of a joint of a connector assembly according to the present invention.

Wherein the figures include the following reference numerals:

10. a transition connecting pipe; 11. a clamping hole; 12. limiting and sinking; 13. connecting the pipe sections; 14. a connecting projection; 20. a joint; 21. clamping the bulges; 22. a limiting bulge; 23. buckling; 24. a pressing part; 25. reinforcing ribs; 26. a guide groove; 30. a drain pipe; 31. a card slot; 32. a guide portion; 40. and (5) sealing rings.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In order to solve the problem of circumferential play between the transition connecting pipe and the joint in the prior art, the utility model provides a connecting pipe assembly, please refer to fig. 1 to 13, which comprises a connecting pipe, a transition connecting pipe 10 and a joint 20, wherein the joint 20 is used for being clamped with a drain pipe 30 of a drainage structure; the first end of the transition connecting pipe 10 is connected with the joint 20 through a clamping hole 11 and a clamping bulge 21 which are matched with each other, and the clamping bulge 21 is inserted in the clamping hole 11; the second end and the connecting pipe of transitional coupling pipe 10 are connected, connect between 20 and the transitional coupling pipe 10 through spacing protruding 22 and the spacing 12 spacing connection of mutually supporting, spacing 12 has the first spacing end and the spacing end of second that arrange in proper order along the circumferential direction of transitional coupling pipe 10, spacing protruding 22 sets up in spacing 12 and spacing between the first spacing end and the spacing end of second.

The utility model discloses a connecting pipe subassembly includes connecting pipe, transition connecting pipe 10 and joint 20, and joint 20 is used for with the drain pipe 30 joint of drainage structures, and the comdenstion water is discharged from drain pipe 30, through joint 20 and transition connecting pipe 10, by the connecting pipe discharge outdoor; transition connection pipe 10's first end and joint 20 are connected through the joint hole 11 and the protruding 21 of joint of mutually supporting, joint protruding 21 is inserted and is established in joint hole 11, connect 20 and transition connection pipe 10's cooperation of being connected, make the comdenstion water of following drain pipe 30 exhaust enter into transition connection pipe 10 through connecting 20, and connect 20 and transition connection pipe 10 between through the spacing protruding 22 and the spacing 12 spacing connection of spacing sunken of mutually supporting, it is inseparable to make transition connection pipe 10 be connected with joint 20, the problem of circumference drunkenness can not appear, and then guarantee that the drain pipe can not take place the drunkenness, the reliability of drain pipe has been improved.

Specifically, the clamping protrusion 21 is disposed on a side wall of the joint 20, and extends outwards from an outer wall of the side wall; the clamping hole 11 is arranged on the side wall of the transition connecting pipe 10, extends from the inner wall of the transition connecting pipe 10 to the outer wall, and is matched with the clamping protrusion 21 in shape.

Specifically, the width of the clamping protrusion 21 is 10.00mm, and the width of the clamping protrusion 21 is a linear distance between a first end and a second end of the clamping protrusion 21 in the circumferential direction of the joint 20; the width of the engaging hole 11 is 12mm, and the width direction of the engaging hole 11 is the left-right direction in fig. 5.

In specific implementation, when the transition connecting pipe 10 is connected with the joint 20, the clamping protrusion 21 and the clamping hole 11 are clamped together, so that the accurate installation position between the transition connecting pipe 10 and the joint 20 is ensured, and the axial movement is avoided. However, the width of the clamping hole 11 is larger than that of the clamping protrusion 21, so that circumferential movement can occur, and the limiting protrusion 22 and the limiting recess 12 are further arranged to ensure that the drain pipe cannot move.

In the present embodiment, as shown in fig. 1, the stopper projection 22 is provided on the side wall of the joint 20; spacing sunken 12 sets up on transition connecting pipe 10, and spacing sunken 12 extends towards the second end by the first end of transition connecting pipe 10 along the axial direction of transition connecting pipe 10, and spacing sunken 12 extends to the outer wall of transition connecting pipe 10 by the inner wall of transition connecting pipe 10 along the radial direction of transition connecting pipe 10.

In other embodiments, not shown, the limiting protrusion 22 is disposed on a sidewall of the connector 20, and the limiting protrusion 22 extends from a first end of the connector 20 to a second end of the connector 20; spacing sunken 12 sets up on transition connection pipe 10, and spacing sunken 12 extends towards the second end by the first end of transition connection pipe 10 along the axial direction of transition connection pipe 10, and spacing sunken 12 extends towards the outer wall of transition connection pipe 10 by the inner wall of transition connection pipe 10 along the radial direction of transition connection pipe 10. Wherein a first end of the joint 20 is adapted to be connected to the drain pipe 30, and a second end of the joint 20 is adapted to be connected to a first end of the transition joint pipe 10.

Specifically, the limiting protrusion 22 is arranged on the side wall of the joint 20, is located in the middle of the side wall, is above the clamping protrusion 21 in the axial direction, and is arranged at 90 degrees with the clamping protrusion 21 in the circumferential direction; spacing sunken 12 sets up at the top of the lateral wall of transition connecting pipe 10, extends to the outer wall by the inner wall of lateral wall, and spacing sunken 12 and spacing protruding 22's shape and position looks adaptation to spacing protruding 22 can closely cooperate when being connected with spacing sunken 12, avoids taking place the circumference drunkenness between transition connecting pipe 10 and the joint 20.

Specifically, the width of the limiting protrusion 22 is greater than or equal to 5mm and less than or equal to 7 mm; optionally, the width of the limiting protrusion 22 is 6.00 mm; the height of the limiting protrusion 22 is 1.91mm, the width of the limiting protrusion 22 is a linear distance between a first end and a second end of the limiting protrusion 22 in the circumferential direction of the joint 20, and the height direction of the limiting protrusion 22 is the up-down direction in fig. 1; the width of the limiting recess 12 is more than or equal to 5mm and less than or equal to 7 mm; optionally, the width of the limiting recess 12 is 6.05 mm; the height of the limiting recess 12 is 2.50mm, the width direction of the limiting recess 12 is the left-right direction in fig. 4, and the height of the limiting recess 12 is the up-down direction in fig. 4. Such an arrangement increases the stability of the positioning.

In specific implementation, the limiting recess 12 is disposed at the top of the side wall of the transition connection pipe 10, and when the joint 20 rotates in the circumferential direction, the limiting protrusion 22 is supported by the side wall of the transition connection pipe 10, so that the circumferential movement between the transition connection pipe 10 and the joint 20 is mainly limited by the matching of the limiting recess 12 and the limiting protrusion 22.

In the present embodiment, the limiting protrusions 22 and the limiting recesses 12 are provided in pairs, the limiting protrusions 22 and the limiting recesses 12 are both plural, and the plural limiting protrusions 22 are sequentially arranged along the circumferential direction of the joint 20.

Alternatively, the restricting protrusion 22 and the restricting recess 12 may be two each.

In the present embodiment, the joint 20 includes a buckle 23, the buckle 23 is used for being clamped with a clamping groove 31 of the drain pipe 30, and the buckle 23 is provided with a pressing portion 24; a rib 25 is provided between the clip 23 and the pressing portion 24, as shown in fig. 3. The arrangement of the pressing part 24 facilitates the pressing operation of the buckle 23, and the joint 20 is more labor-saving and quicker to disassemble from the drain pipe 30; the reinforcing rib 25 ensures that the buckle 23 cannot be broken after being disassembled and assembled for many times, ensures the reliability of the buckle 23, and balances the toughness and the strength of the buckle 23.

Specifically, the buckle 23 is disposed on the side wall of the connector 20, and the pressing portion is rectangular and has a width of 10.64 mm.

Specifically, the thickness of the reinforcing rib 25 is not less than 0.5mm and not more than 0.7 mm; optionally, the ribs 25 are 0.6mm thick. The thickness direction of the rib 25 is the x direction in fig. 3. Such setting can be under the prerequisite that keeps buckle intensity, and attenuate 25 thickness of strengthening rib are in order to strengthen buckle toughness, avoid the buckle fracture after the joint many times.

In this embodiment, the connector 20 includes a clip 23, the clip 23 is used for being clipped with a clip groove 31 of the drain pipe 30, and the width of the clip 23 ranges from 7mm to 12 mm. The reliability of the buckle assembly is enhanced, the buckle locking force is increased, and the stability of the joint 20 after being connected with the drain pipe 30 is improved.

Optionally, the width of the catch 23 is 8.1 mm.

In specific implementation, the drain pipe 30 and the joint 20 are assembled and disassembled by fastening and loosening the buckle 23 and the clamping groove 31 of the drain pipe 30.

In specific implementation, the drain pipe 30 further includes a guiding portion 32, as shown in fig. 10, the guiding portion 32 is disposed at two sides of the slot 31 and is shaped like a boss; the connector 20 is provided with a guide groove 26 matched with the guide part 32, and before the buckle 23 is fastened with the clamping groove 31 of the drain pipe 30, the guide part 32 is inserted into the guide groove 26 to play a role in guiding, so that the buckle 23 is prevented from being installed at other positions.

In this embodiment, as shown in fig. 4, the transition connecting pipe 10 includes a connecting pipe section 13, a connecting protrusion 14 is disposed on a side wall of the connecting pipe section 13, and the connecting protrusion 14 is disposed around the connecting pipe section 13; the connecting pipe section 13 is inserted into the connecting pipe, and the connecting pipe section 13 is connected with the connecting pipe in an interference manner through the connecting bulge 14.

In the present embodiment, the coupling protrusion 14 is plural, and the plural coupling protrusions 14 are arranged in order in the axial direction of the coupling pipe section 13.

During specific implementation, the connecting pipe section 13 and the connecting pipe are tightly clamped by the plurality of connecting protrusions 14, so that the condition that condensed water overflows from the connecting pipe section 13 is avoided.

In specific implementation, as shown in fig. 11, the connection pipe assembly further includes a sealing ring 40, and the sealing ring 40 is mounted on an inner boss of the transition connection pipe 10 and clamped between the inner boss and the joint 20 to perform a sealing function, so as to prevent the condensed water from overflowing between the transition connection pipe 10 and the joint 20.

Specifically, the material of the sealing ring is hydrogenated nitrile rubber, and the hydrogenated nitrile rubber has good oil resistance, heat resistance, high pressure resistance and oxygen resistance, so that the sealing ring cannot be easily damaged.

The utility model also provides an air-conditioning indoor unit, which comprises the connecting pipe component in the embodiment; the drainage structure is used for draining condensed water generated by the indoor unit of the air conditioner and comprises a drain pipe 30, and the joint 20 of the connecting pipe component is clamped with the drain pipe 30.

In this embodiment, the drain pipe 30 has a slot 31, the clip 23 of the connector 20 is clipped to the slot 31, the width of the slot 31 is equal to the width of the clip 23, and the width of the slot 31 ranges from 7mm to 12 mm.

Optionally, the width of the slot is 8.10 mm.

It can be seen that the utility model provides a following technical problem:

the problem of complex structural design is solved, and the buckling and pressing type connecting device and the air conditioner are simple in design structure and easy to assemble; the problem of assembly operation degree of difficulty big is solved, the buckle formula withholds and makes assembly, dismantlement more simple and convenient to adopt orthoscopic butt joint assembly, it is convenient to install, one step of completion is sealed with the locking function.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the utility model discloses a connecting pipe subassembly includes connecting pipe, transition connecting pipe 10 and joint 20, and joint 20 is used for with the drain pipe 30 joint of drainage structures, and the comdenstion water is discharged from drain pipe 30, through joint 20 and transition connecting pipe 10, by the connecting pipe discharge outdoor; transition connection pipe 10's first end and joint 20 are connected through the joint hole 11 and the protruding 21 of joint of mutually supporting, joint protruding 21 is inserted and is established in joint hole 11, connect 20 and transition connection pipe 10's cooperation of being connected, make the comdenstion water of following drain pipe 30 exhaust enter into transition connection pipe 10 through connecting 20, and connect 20 and transition connection pipe 10 between through the spacing protruding 22 and the spacing 12 spacing connection of spacing sunken of mutually supporting, it is inseparable to make transition connection pipe 10 be connected with joint 20, the problem of circumference drunkenness can not appear, and then guarantee that the drain pipe can not take place the drunkenness, the reliability of drain pipe has been improved.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A connecting pipe assembly comprises a connecting pipe, a transition connecting pipe (10) and a connector (20), wherein the connector (20) is used for being clamped with a drain pipe (30) of a drainage structure; the first end of the transition connecting pipe (10) is connected with the joint (20) through a clamping hole (11) and a clamping protrusion (21) which are matched with each other, and the clamping protrusion (21) is inserted into the clamping hole (11); the second end of the transition connecting pipe (10) is connected with the connecting pipe, characterized in that,

connect (20) with spacing connection through spacing protruding (22) and spacing sunken (12) of mutually supporting between transition connecting pipe (10), spacing sunken (12) are followed the circumferential direction of transition connecting pipe (10) has the spacing end of first spacing end and the second that arranges in proper order, spacing protruding (22) set up spacing sunken (12) in and spacing between the spacing end of first spacing end and the second.

2. A connecting tube assembly according to claim 1, characterized in that the stop lug (22) is provided on a side wall of the joint (20); spacing sunken (12) set up on transition connecting pipe (10), spacing sunken (12) are followed the axial direction of transition connecting pipe (10) by the first end of transition connecting pipe (10) extends towards the second end, spacing sunken (12) are followed the radial direction of transition connecting pipe (10) by the inner wall of transition connecting pipe (10) extends to the outer wall of transition connecting pipe (10).

3. A connecting tube assembly according to claim 1, characterized in that the stop lug (22) is provided on a side wall of the nipple (20), the stop lug (22) extending from a first end of the nipple (20) to a second end of the nipple (20); spacing sunken (12) set up on transition connecting pipe (10), spacing sunken (12) are followed the axial direction of transition connecting pipe (10) by the first end of transition connecting pipe (10) extends towards the second end, spacing sunken (12) are followed the radial direction of transition connecting pipe (10) by the inner wall orientation of transition connecting pipe (10) the outer wall of transition connecting pipe (10) extends.

4. The connecting tube assembly according to claim 1, wherein the limiting protrusions (22) and the limiting recesses (12) are provided in pairs, the limiting protrusions (22) and the limiting recesses (12) are each provided in plurality, and the plurality of limiting protrusions (22) are arranged in sequence in the circumferential direction of the joint (20).

5. Connecting tube assembly according to one of claims 1 to 4, characterized in that the joint (20) comprises a snap (23), the snap (23) being adapted to snap into a snap groove (31) of the drain tube (30), the snap (23) being provided with a pressing portion (24);

wherein a reinforcing rib (25) is arranged between the buckle (23) and the pressing part (24).

6. The connecting tube assembly according to any one of claims 1 to 4, wherein the joint (20) comprises a snap (23), the snap (23) is used for being snapped with a snap groove (31) of the drain tube (30), and the width of the snap (23) ranges from 7mm to 12 mm.

7. The connecting tube assembly according to any one of claims 1 to 4,

the transition connecting pipe (10) comprises a connecting pipe section (13), a connecting bulge (14) is arranged on the side wall of the connecting pipe section (13), and the connecting bulge (14) is arranged around the connecting pipe section (13); the connecting pipe section (13) is inserted into the connecting pipe, and the connecting pipe section (13) is in interference connection with the connecting pipe through the connecting bulge (14).

8. The connector assembly according to claim 7, wherein the coupling projection (14) is plural, and plural coupling projections (14) are arranged in sequence in an axial direction of the coupling pipe section (13).

9. An indoor unit of an air conditioner, comprising:

the connector tube assembly of any one of claims 1 to 8;

the drainage structure is used for draining condensed water generated by the indoor unit of the air conditioner and comprises a drainage pipe (30), and a joint (20) of the connecting pipe assembly is clamped with the drainage pipe (30).

10. The indoor unit of air conditioner as claimed in claim 9, wherein the drain pipe (30) has a slot (31), the buckle (23) of the joint (20) is clamped with the slot (31), the width of the slot (31) is equal to the width of the buckle (23), and the width of the slot (31) ranges from 7mm to 12 mm.

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