Pipe connecting structure and household appliance

Abstract

The application provides a pipeline connecting structure and a household appliance. The pipeline connecting structure comprises a first connecting pipe and a second connecting pipe arranged oppositely. The second connecting pipe is sleeved outside the first connecting pipe at opposite ends of the first connecting pipe and the second connecting pipe, so that the first connecting pipe and the second connecting pipe have a coinciding portion. A pressing member is arranged on the second connecting pipe. After the first connecting pipe and the second connecting pipe are connected, the pressing member is located in the coinciding portion. A pressing sleeve is sleeved outside the first connecting pipe and the second connecting pipe and is connected with the first connecting pipe and the second connecting pipe. The pressing sleeve applies a pressing force to the pressing member, so that the second connecting pipe and the first connecting pipe abut against each other at the coinciding portion. The assembly of the pipeline connecting structure is not affected by the size precision of the pipeline to be connected. Meanwhile, the first connecting pipe and the second connecting pipe are convenient to install and high in assembly efficiency. Therefore, the technical scheme of the application solves the defect that the installation of the clamp chuck in the prior art is greatly affected by the pipeline precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe fitting, in particular to a pipe connecting structure and a household appliance. BACKGROUND

[0002] In the household appliance, there is often a need to connect two pipes. For example, in a water purifier, a clamp or a chuck is usually used to connect two stainless steel pipes. However, if there is a large error in the size of the two stainless steel pipes during production or welding, it will be difficult to install the clamp or chuck, affecting the assembly efficiency. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the defect that the installation of the clamp and chuck in the prior art is greatly affected by the precision of the pipe, thereby providing a pipe connecting structure and a household appliance.

[0004] To solve the above problems, the present application provides a pipe connecting structure, comprising: a first connecting pipe and a second connecting pipe arranged oppositely, in the opposite ends of the first connecting pipe and the second connecting pipe, the second connecting pipe is sleeved outside the first connecting pipe, so that the first connecting pipe and the second connecting pipe have a coincident part, a pressing member is arranged on the second connecting pipe, and the pressing member is located in the coincident part after the first connecting pipe and the second connecting pipe are connected; a pressing sleeve is sleeved outside the first connecting pipe and the second connecting pipe and connects the first connecting pipe and the second connecting pipe, the pressing sleeve applies a pressing force to the pressing member, so that the first connecting pipe and the second connecting pipe are pressed together.

[0005] The coincident part of the second connecting pipe and the first connecting pipe abuts.

[0006] Optionally, the second connecting pipe is provided with a receiving hole, the pressing member is a pressing ball, and the pressing ball is arranged in the receiving hole and protrudes from the inner and outer surfaces of the second connecting pipe.

[0007] Optionally, the receiving hole is a plurality of receiving holes, the plurality of receiving holes are arranged at intervals along the circumference of the second connecting pipe, and the plurality of pressing balls are arranged one-to-one with the plurality of receiving holes.

[0008] Optionally, the inner wall of the pressing sleeve is provided with a pressing groove, the first end of the pressing groove penetrates the end of the pressing sleeve facing the second connecting pipe, the second end of the pressing groove extends towards the inside of the pressing sleeve, and the pressing groove is adapted to abut against the pressing ball.

[0009] Optionally, the pressing groove is an annular groove.

[0010] Optionally, the inner wall of the pressing sleeve is provided with a first receiving groove, the first receiving groove is in communication with the second end of the pressing groove, and the first receiving groove is adapted to cooperate with the pressing ball.

[0011] Optionally, a second accommodating groove is arranged on the outer wall of the first connecting pipe, and the second accommodating groove is adapted to cooperate with the compression ball.

[0012] Optionally, the second accommodating groove is an annular groove.

[0013] Optionally, the outer wall of the first connecting pipe is provided with a first threaded segment, the outer wall of the second connecting pipe is provided with a second threaded segment, and the inner wall of the compression sleeve is provided with a third threaded segment, which cooperates with the first threaded segment and the second threaded segment.

[0014] The application further provides a household appliance comprising the pipeline connecting structure.

[0015] The application has the following advantages:

[0016] When the two-end pipeline needs to be connected, the first connecting pipe is connected with one of the pipelines, the second connecting pipe is connected with the other pipeline, and then the first pipeline and the second pipeline are assembled. The second pipeline is sleeved outside the first pipeline, so that

[0017] The compression member is located in the overlapping part of the first pipeline and the second pipeline, and then the first pipeline and the second pipeline are connected through the compression sleeve. The compression sleeve exerts a compression force on the compression member, and the overlapping part of the first pipeline and the second pipeline is tightly attached, thereby completing the connection of the two-end pipeline. In the above structure, the assembly of the pipeline connecting structure is not affected by the size precision of the pipelines to be connected, and the first connecting pipe and the second connecting pipe are easy to install and have high assembly efficiency. Therefore, the technical scheme of the application solves the defect that the installation of the clamp chuck in the prior art is greatly affected by the pipeline precision. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 Fig. 1 shows a structure schematic view of the first connecting pipe of an embodiment of the pipeline connecting structure of the application;

[0020] Figure 2 Fig. 2 shows a structure schematic view of the second connecting pipe of an embodiment of the pipeline connecting structure of the application;

[0021] Figure 3 Fig. 3 shows a structure schematic view of the compression sleeve of an embodiment of the pipeline connecting structure of the application;

[0022] Figure 4 Assembling view of an embodiment of the pipe connecting structure of the present application is shown; and

[0023] Figure 5 Assembling view of an embodiment of the pipe connecting structure of the present application is shown; and Figure 4 Enlarged view at A in the middle.

[0024] Explanation of reference numerals:

[0025] 10, first connecting pipe; 11, second accommodating groove; 12, first threaded section; 20, second connecting

[0026] pipe; 21, accommodating hole; 22, second threaded section; 30, pressing member; 40, pressing sleeve; 41, pressing groove; 42, first accommodating groove; 43, third threaded section. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0031] For example, Figures 1 to 5As shown, the pipe connecting structure of the embodiment includes a first connecting pipe 10 and a second connecting pipe 20 arranged oppositely, and a pressing sleeve 40. Among the opposite ends of the first connecting pipe 10 and the second connecting pipe 20, the second connecting pipe 20 is sleeved outside the first connecting pipe 10, so that the first connecting pipe 10 and the second connecting pipe 20 have a coincident part. The pressing member 30 is arranged on the second connecting pipe 20, and after the first connecting pipe 10 and the second connecting pipe 20 are connected, the pressing member 30 is located in the coincident part. The pressing sleeve 40 is sleeved outside the first connecting pipe 10 and the second connecting pipe 20, and connects the first connecting pipe 10 and the second connecting pipe 20. The pressing sleeve 40 applies a pressing force to the pressing member 30, so that the coincident part of the second connecting pipe 20 and the first connecting pipe 10 abuts.

[0032] By using the technical solution of the embodiment, when two-end pipes need to be connected, the first connecting pipe 10 is first connected with one of the pipes, the second connecting pipe 20 is connected with the other pipe, and then the first connecting pipe 10 and the second connecting pipe 20 are assembled. The second connecting pipe 20 is first sleeved outside the first connecting pipe 10, so that the pressing member 30 is located in the coincident part of the first connecting pipe 10 and the second connecting pipe 20. Then the first connecting pipe 10 and the second connecting pipe 20 are connected by the pressing sleeve 40. The pressing sleeve 40 applies a pressing force to the pressing member 30, and makes the coincident part of the first connecting pipe 10 and the second connecting pipe 20 tightly fit, thereby completing the connection of the two-end pipes. In the above structure, the assembly of the pipe connecting structure is not affected by the size accuracy of the pipes to be connected, and the first connecting pipe and the second connecting pipe are easy to install and have high assembly efficiency. Therefore, the technical solution of the embodiment solves the defect in the prior art that the installation of the clamp chuck is greatly affected by the pipe accuracy.

[0033] It should be noted that the opposite ends of the first connecting pipe 10 and the second connecting pipe 20 mentioned above refer to the end of the first connecting pipe 10 facing the second connecting pipe 20, and the end of the second connecting pipe 20 facing the first connecting pipe 10. That is Figure 1 the right end of the first connecting pipe 10 in the figure, Figure 2 the left end of the second connecting pipe 20 in the figure. For simplicity of description, the opposite ends of the first connecting pipe 10 and the second connecting pipe

[0034] 20 will be described as the right end of the first connecting pipe 10 and the left end of the second connecting pipe 20 in the following.

[0035] Since the second connecting pipe 20 is sleeved outside the first connecting pipe 10, the first connecting pipe 10 and the second connecting pipe 20 have a coincident part after assembly. The pressing member 30 is arranged at the left end of the second connecting pipe 20, so that after the second connecting pipe 20 is sleeved outside the first connecting pipe 10, the pressing member 30 is located between the coincident part of the first connecting pipe 10 and the second connecting pipe 20.

[0036] Combination Figure 3 As can be seen, the pressing sleeve 40 is in a sleeve structure, the pressing sleeve 40 is sleeved on the first connecting pipe 10 and the second connecting pipe 20, and connects the first connecting pipe 10 and the second connecting pipe 20. The inner wall of the pressing sleeve 40 can exert an inward pressing force on the pressing piece 30. Since the pressing piece 30 is arranged on the second connecting pipe 20, that is, the second connecting pipe 20 is subjected to a pressing force towards the first connecting pipe 10, so that the coinciding parts of the first connecting pipe 10 and the second connecting pipe 20 are tightly overlapped, and the sealing effect of the connection is guaranteed.

[0037] When connecting the pipeline, the first connecting pipe 10 and one of the two sections of the pipeline to be connected are connected, and the second connecting pipe 20 is connected with the other section of the pipeline to be connected. Specifically, the two sections of the pipeline to be connected are flared, and then the two sections of the pipeline to be connected are respectively inserted with the left end of the first connecting pipe 10 and the right end of the second connecting pipe 20, and then welded and fixed, and then the first connecting pipe 10 and the second connecting pipe 20 are assembled.

[0038] As shown in Figure 5 In the technical scheme of the embodiment, the second connecting pipe 20 is provided with a containing hole 21, and the pressing piece 30 is a pressing ball, which is arranged in the containing hole 21 and protrudes from the inner and outer surfaces of the second connecting pipe 20.

[0039] Specifically, the pressing ball is a steel ball. The two sides of the pressing ball protrude from the outer wall and the inner wall of the second connecting pipe 20, so that the outer side of the pressing ball can be extruded by the inner wall of the pressing sleeve 40, and

[0040] The inner side of the pressing ball can extrude the outer wall of the right end of the first connecting pipe 10.

[0041] Preferably, the pressing ball is arranged in the containing hole 21 and cannot be taken out of the containing hole 21. The above arrangement can be realized by arranging the hole wall of the containing hole 21 as an arc-shaped wall, or arranging an anti-extrusion structure between the containing hole 21 and the pressing ball.

[0042] As shown in Figure 2 and Figure 5 In the technical scheme of the embodiment, the containing hole 21 is a plurality of containing holes 21, which are arranged along the circumference of the second connecting pipe 20. The pressing ball is a plurality of pressing balls, which are arranged one by one corresponding to the plurality of containing holes 21.

[0043] Specifically, when the clamping sleeve 40 is fitted over the second connecting pipe 20, the inner wall of the clamping sleeve 40 can apply clamping force to multiple clamping balls, that is, apply inward clamping force to the entire circumference of the second connecting pipe 20, thereby making the fit between the second connecting pipe 20 and the first connecting pipe 10 better.

[0044] The specific number of the aforementioned receiving holes 21 and the pressure balls can be determined by those skilled in the art based on the specific dimensions of the first connecting tube 10 and the second connecting tube 20.

[0045] like Figure 3 As shown, in the technical solution of this embodiment, the inner wall of the compression sleeve 40 is provided with a compression groove 41. The first end of the compression groove 41 passes through the end of the compression sleeve 40 facing the second connecting pipe 20, and the second end of the compression groove 41 extends toward the inside of the compression sleeve 40. The compression groove 41 is adapted to abut against the compression ball.

[0046] Specifically, the clamping groove 41 is provided on the inner wall of the right end of the clamping sleeve 40. The right end of the clamping groove 41 penetrates the right end of the clamping sleeve 40 and forms an opening, while the left end of the clamping groove 41 extends into the interior of the clamping sleeve 40.

[0047] During assembly, the clamping sleeve 40 is fitted over the second connecting pipe 20, and the portion of the clamping ball protruding from the second connecting pipe 20 enters the clamping groove 41 through the aforementioned opening. The clamping sleeve 40...

[0048] As the ball moves toward the second connecting pipe 20, the inner wall of the clamping groove 41 comes into contact with the clamping ball, thereby applying pressure to the clamping ball. The pressure on the clamping ball is transmitted to the second connecting pipe 20, causing the second connecting pipe 20 and the first connecting pipe 10 to fit tightly together.

[0049] like Figure 5 As shown, when the clamping sleeve 40 is assembled on the second connecting pipe 20, the distance between the bottom wall of the clamping groove 41 and the outer wall of the second connecting pipe 20 is slightly smaller than the thickness of the clamping ball protruding from the outer wall of the second connecting pipe 20, so that the bottom wall of the clamping groove 41 and the clamping ball can interfere with each other to apply clamping force to the clamping ball.

[0050] Preferably, the clamping groove 41 is an annular groove. Since the clamping sleeve 40 needs to be rotated during installation, the clamping groove 41 is set as an annular groove to prevent interference with the clamping ball during assembly.

[0051] like Figure 5 As shown, in the technical solution of this embodiment, the inner wall of the compression sleeve 40 is provided with a first receiving groove 42, which is connected to the second end of the compression groove 41, and the first receiving groove 42 is adapted to cooperate with the compression ball.

[0052] Specifically, the first receiving groove 42 is connected to the left end of the pressing groove 41, and the depth of the first receiving groove 42 is greater than the depth of the pressing groove 41. The first receiving groove 42 is also an annular groove.

[0053] The function of the first receiving groove 42 is to allow the clamping sleeve 40 to move to the position of the clamping ball corresponding to the first receiving groove 42 when the fit between the first connecting pipe 10 and the second connecting pipe 20 is sufficiently tight and no additional clamping force is required (i.e., Figure 5 The intermediate clamping sleeve 40 continues to move to the right. At this time, the clamping ball is contained in the first receiving groove 42 and is not subjected to inward pressure, so the second connecting pipe 20 is not subjected to the squeezing force of the clamping sleeve 40.

[0054] like Figure 1 As shown, in the technical solution of this embodiment, a second receiving groove 11 is provided on the outer wall of the first connecting pipe 10, and the second receiving groove 11 is adapted to cooperate with the pressure ball.

[0055] Specifically, the right end of the first connecting pipe 10 has a reduced diameter section, which is inserted during assembly.

[0056] Inside the second connecting pipe 20. The second receiving groove 11 is provided on the reduced diameter section of the first connecting pipe 10.

[0057] from Figure 5 As can be seen, during assembly, when the first connecting pipe 10 and the second connecting pipe 20 move until the clamping ball is located within the second receiving groove 11, they are properly assembled. One function of the second receiving groove 11 is to position the first connecting pipe 10 and the second connecting pipe 20. When the clamping ball is felt to be engaged within the second receiving groove 11 during assembly, it indicates that the first connecting pipe 10 and the second connecting pipe 20 are properly assembled. Another function of the second receiving groove 11 is that the portion of the clamping ball protruding from the inner wall of the second connecting pipe 20 can be accommodated within the second receiving groove 11, thereby ensuring a tight fit between the outer wall of the first connecting pipe 10 and the inner wall of the second connecting pipe 20. This prevents liquid leakage caused by gaps between the first connecting pipe 10 and the second connecting pipe 20 due to the clamping ball abutting against the outer wall of the first connecting pipe 10.

[0058] Preferably, the second receiving groove 11 is an annular groove. After the first connecting pipe 10 and the second connecting pipe 20 are assembled, the multiple clamping balls are all accommodated in the second receiving groove 11.

[0059] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the outer wall of the first connecting pipe 10 is provided with a first threaded section 12, the outer wall of the second connecting pipe 20 is provided with a second threaded section 22, and the inner wall of the compression sleeve 40 is provided with a third threaded section 43, which cooperates with the first threaded section 12 and the second threaded section 22.

[0060] Specifically, before assembly, the compression sleeve 40 and the second connecting pipe 20 are assembled as a whole, and the third threaded section 43 is engaged with the second threaded section 22. During assembly, the first connecting pipe 10 is first positioned corresponding to the left end of the compression sleeve 40, and then the compression sleeve 40 is rotated so that the third threaded section 43 is engaged with the first threaded section 12, and the first connecting pipe 10 is moved towards the second connecting pipe 20 until the compression ball is positioned in the second accommodating groove 11. Then the compression sleeve 40 is rotated so that the compression sleeve 40 is moved towards the second connecting pipe 20, and the compression ball is moved into the compression groove 41 and is compressed by the compression groove 41. The compression ball transmits the compression force to the second connecting pipe 20, so that the coinciding part of the first connecting pipe 10 and the second connecting pipe 20 is tightly fitted.

[0061] The compression groove 41 is compressed. The compression ball transmits the compression force to the second connecting pipe 20, so that the coinciding part of the first connecting pipe 10 and the second connecting pipe 20 is tightly fitted.

[0062] The application also provides a household appliance, which comprises the pipe connecting structure described above. Preferably, the household appliance is a water purifier.

[0063] Obviously, the above embodiments are only examples for clearly illustrating the application, and are not intended to limit the application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the application.

Claims

1. A pipe connection structure characterized by comprising: The utility model relates to a pipeline connecting structure, which comprises: opposite first connecting pipe (10) and second connecting pipe (20), in the opposite end of first connecting pipe (10) and second connecting pipe (20), second connecting pipe (20) is set outside first connecting pipe (10), so that first connecting pipe (10) and second connecting pipe (20) have coincident part, second connecting pipe (20) is provided with pressure tight member (30), after first connecting pipe (10) and second connecting pipe (20) are connected, pressure tight member (30) is located in coincident part, pressure tight sleeve (40) is set outside first connecting pipe (10) and second connecting pipe (20) and connects first connecting pipe (10) and second connecting pipe (20), pressure tight sleeve (40) exerts pressure tight force on pressure tight member (30), so that the coincident part of second connecting pipe (20) and first connecting pipe (10) abuts, second connecting pipe (20) is provided with containing hole (21), pressure tight member (30) is pressure tight ball, pressure tight ball is arranged in containing hole (21), and pressure tight ball protrudes the inner and outer surface of second connecting pipe (20), the inner wall of pressure tight sleeve (40) is provided with pressure tight groove (41), the first end of pressure tight groove (41) penetrates the end of pressure tight sleeve (40) towards second connecting pipe (20), the second end of pressure tight groove (41) extends towards the inside of pressure tight sleeve (40), and pressure tight groove (41) is adapted to abut with pressure tight ball, the inner wall of pressure tight sleeve (40) is provided with first containing groove (42), first containing groove (42) is communicated with the second end of pressure tight groove (41), and first containing groove (42) is adapted to cooperate with pressure tight ball, the distance between the bottom wall of pressure tight groove (41) and the outer wall of second connecting pipe (20) is less than the thickness of pressure tight ball protruding the outer wall of second connecting pipe (20), and the depth of first containing groove (42) is greater than the depth of pressure tight groove (41).

2. The pipe connection structure according to claim 1, characterized by Containing hole (21) is multiple, and multiple containing holes (21) are arranged along the circumference of second connecting pipe (20), multiple pressure tight balls are arranged one by one with multiple containing holes (21).

3. The pipe connection structure according to claim 1, characterized by Pressure tight groove (41) is annular groove.

4. The pipe connection structure according to any one of claims 1 to 3, characterized by The outer wall of first connecting pipe (10) is provided with second containing groove (11), and second containing groove (11) is adapted to cooperate with pressure tight ball.

5. The pipe connection structure according to claim 4, characterized by Second containing groove (11) is annular groove.

6. The pipe connection structure according to any one of claims 1 to 3, characterized by The outer wall of first connecting pipe (10) is provided with first threaded section (12), the outer wall of second connecting pipe (20) is provided with second threaded section (22), and the inner wall of pressure tight sleeve (40) is provided with third threaded section (43), which cooperates with first threaded section (12) and second threaded section (22).

7. A domestic appliance characterized in that, The utility model relates to a pipeline connecting structure, which comprises: any one of claims 1 to 6.

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