Sewer pipe assembly

Abstract

The sewer pipe assembly comprises a flexible sewer pipe and a pipe connector, the pipe connector comprises a water inlet end and a water outlet end, a water outlet pipe is arranged at the position, corresponding to the water outlet end, of the pipe connector, a connector part is fixedly or integrally arranged at the outer end of the water outlet pipe, and external threads are arranged on the outer wall of the connector part. All outer end points, projected to a tangent plane coinciding with the central axis of the connector part, of the external threads form two end point sets located on two oblique lines, and the distance between the inner ends of the oblique lines and the central axis is larger than that between the outer ends of the oblique lines and the central axis. At least part of the pipe diameter of the flexible sewer pipe is consistent, the inner wall of the part with the consistent pipe diameter is provided with an internal thread which is in threaded connection with the connector part, and the part with the consistent pipe diameter of the flexible sewer pipe is gradually expanded when being in threaded connection with the connector part. And the flexible sewer pipe is gradually expanded during screwing, so that falling can be avoided, the connecting effect is guaranteed, and assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of drainers, in particular to a sewer pipe assembly. Background Art

[0002] In a bathtub, washbasin or vegetable washing basin, in order to facilitate water storage and drainage, a drainer is generally arranged at the bottom end of the bathtub, washbasin or vegetable washing basin. By controlling the switch of the drainer, the water storage and drainage of the bathtub, washbasin or vegetable washing basin are realized. According to the type, it can be divided into a pop-up drainer, a flip drainer, a lift drainer, etc.

[0003] The drainer needs to be used in cooperation with a sewer pipe. The drainer includes a pipe joint connected to the sewer pipe. It is necessary to dock the sewer pipe with the pipe joint. The sewer pipe is threadedly connected to the threaded part outside the pipe joint through a screw cap installed on the sewer pipe. This method requires a separate accessory to complete the installation, and the connection method between the accessory (screw cap) and the sewer pipe also needs to be considered. The assembly structure is complex and the installation is not convenient enough. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a sewer pipe assembly.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sewer pipe assembly includes a flexible sewer pipe and a pipe joint. The pipe joint includes a water inlet end and a water outlet end. A water outlet pipe is arranged at the position corresponding to the water outlet end of the pipe joint. A joint part is fixedly or integrally arranged at the outer end of the water outlet pipe. An external thread is arranged on the outer wall of the joint part. All the outer endpoints of the external thread projected onto the section coinciding with the central axis of the joint part form two groups of endpoint groups arranged along two oblique lines. The distance from the inner end of the oblique line to the central axis is greater than the distance from the outer end of the oblique line to the central axis. At least part of the flexible sewer pipe has a consistent pipe diameter, and an internal thread for threaded connection with the joint part is arranged on the inner wall of the part with the consistent pipe diameter. When the part with the consistent pipe diameter of the flexible sewer pipe is threadedly connected with the joint part, it is gradually expanded.

[0006] As a preferred technical solution of the utility model, the outer wall of the joint part is a conical surface, and the diameter of the conical surface gradually decreases from inside to outside. The external thread is arranged on the conical surface.

[0007] As a preferred technical solution of the utility model, the flexible sewer pipe is a spiral corrugated pipe and the spiral corrugated pipe is made of plastic.

[0008] As a preferred technical solution of the utility model, a retaining ring is arranged on the sewer pipe at the inner end of the external thread.

[0009] As a preferred technical solution of the present utility model, a retaining piece is arranged on the outer wall of the retaining ring. A rotary cover matched with the retaining ring is sleeved outside the flexible lower water pipe. A blocking portion is arranged at the inner end of the rotary cover, and a rotary groove is formed inside the blocking portion. A notch adapted to the shape of the retaining piece is arranged outside the blocking portion, and the notch is communicated with the rotary groove.

[0010] As a preferred technical solution of the present utility model, two retaining pieces are arranged and symmetrically arranged on the outer wall of the retaining ring. Two blocking portions are arranged, and the notches of the blocking portions correspond to the retaining pieces respectively. After the retaining pieces are aligned with the notches and inserted, and then rotated clockwise or counterclockwise, the two retaining pieces can enter and be limited in the rotary groove at the same time.

[0011] As a preferred technical solution of the present utility model, both the retaining piece and the notch are fan-shaped.

[0012] As a preferred technical solution of the present utility model, a channel hole is arranged at the water inlet end of the pipe joint, and a pipe fitting fixed to the upper end of the pipe joint and communicated with the channel hole is provided.

[0013] As a preferred technical solution of the present utility model, the pipe fitting includes a pipe body and positioning pieces symmetrically arranged on both sides of the pipe body. Internal threads are arranged inside the pipe body. Positioning grooves are arranged on both sides of the upper end of the channel hole at the water inlet end of the pipe joint. The pipe body is inserted into the channel hole, and the positioning pieces are inserted and matched with the positioning grooves.

[0014] As a preferred technical solution of the present utility model, the pipe fitting includes a pipe body and positioning pieces symmetrically arranged on both sides of the pipe body. A connecting column is arranged at the center of the pipe body, and internal threads are arranged inside the connecting column. A plurality of connecting ribs are arranged in an array between the outer wall of the connecting column and the inner wall of the pipe body. Positioning grooves are arranged on both sides of the upper end of the channel hole at the water inlet end of the pipe joint. The pipe body is inserted into the channel hole, and the positioning pieces are inserted and matched with the positioning grooves.

[0015] In summary, the beneficial effects of the present utility model are as follows:

[0016] The flexible lower water pipe can be directly thread-connected with the pipe joint. When the flexible lower water pipe is screwed, it gradually expands by using its own plasticity. The end point groups of the external threads are arranged along an oblique line on the section, so that the flexible lower water pipe is tightened more and more, which can avoid falling off, ensure the connection effect, and is convenient for assembly.

[0017] A rotary cover is sleeved outside the flexible lower water pipe. After the flexible lower water pipe is screwed, the rotary cover is pushed towards the retaining ring to align the notch of the blocking portion with the retaining piece. Then the rotary cover is rotated to make the retaining piece enter and be limited in the rotary groove, which can press the expanded part of the flexible lower water pipe and avoid the infinite expansion of the outer end of the flexible lower water pipe and phenomena such as cracking. Description of the Drawings

[0018] Figure 1It is the exploded view of the present utility model;

[0019] Figure 2 It is the structural schematic diagram of the pipe joint in the present utility model;

[0020] Figure 3 It is the top view of the pipe joint in the present utility model;

[0021] Figure 4 It is the sectional view of the pipe joint in the present utility model;

[0022] Figure 5 It is the structural schematic diagram of the screw cap in the present utility model;

[0023] Figure 6 It is the structural schematic diagram of a kind of pipe fitting in the present utility model;

[0024] Figure 7 It is the structural schematic diagram of another kind of pipe fitting in the present utility model.

[0025] Reference signs: 1, flexible sewer pipe; 2, pipe joint; 3, water inlet end; 4, water outlet end; 5, water outlet pipe; 6, joint part; 7, external thread; 8, oblique line; 9, pipe fitting; 10, conical surface; 11, retaining ring; 12, retaining piece; 13, screw cap; 14, blocking part; 15, rotary groove; 16, notch; 17, through hole; 18, pipe body; 19, positioning piece; 20, positioning groove; 21, connecting column; 22, connecting rib; 23, gasket. Detailed implementation manners

[0026] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and the drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0027] The specific embodiments of the present utility model will be described below in conjunction with the drawings.

[0028] As Figure 1-7 shown, a kind of sewer pipe assembly includes a flexible sewer pipe 1 and a pipe joint 2. The pipe joint 2 includes a water inlet end 3 and a water outlet end 4. A water outlet pipe 5 is arranged at the position corresponding to the water outlet end 4 of the pipe joint 2. A joint part 6 is fixedly or integrally arranged at the outer end of the water outlet pipe 5. An external thread 7 is arranged on the outer wall of the joint part 6. All the outer endpoints of the external thread 7 projected onto the section plane coinciding with the central axis of the joint part 6 form two groups of endpoint groups arranged along two oblique lines 8. The distance from the inner end of the oblique line 8 to the central axis is greater than the distance from the outer end of the oblique line 8 to the central axis. Refer to Figure 4In D1 is greater than D2, at least part of the flexible sewer pipe 1 has a consistent pipe diameter, and the inner wall of the part with the consistent pipe diameter is provided with an internal thread that is threadedly connected to the joint part 6. When the part of the flexible sewer pipe 1 with the consistent pipe diameter is threadedly connected to the joint part 6, it gradually expands.

[0029] The outer wall of the joint part 6 is a conical surface 10 and the diameter of the conical surface 10 gradually decreases from inside to outside. The external thread 7 is arranged on the conical surface 10. It is also possible that the joint part 6 has a fixed pipe diameter (that is, the outer wall of the joint part 6 is a cylindrical surface), and a gradually changing thread is arranged on the outer wall of the joint part 6, similar to a pagoda shape, and the outer diameter gradually decreases from inside to outside.

[0030] The flexible sewer pipe 1 is a spiral corrugated pipe and the spiral corrugated pipe is made of plastic.

[0031] A retaining ring 11 is arranged on the sewer pipe at the inner end of the external thread 7. A retaining piece 12 is arranged on the outer wall of the retaining ring 11. A rotary cover 13 that cooperates with the retaining ring 11 is sleeved outside the flexible sewer pipe 1. A blocking part 14 is arranged at the inner end of the rotary cover 13 and a rotary groove 15 is opened inside the blocking part 14. A notch 16 that is adapted to the shape of the retaining piece 12 is arranged outside the blocking part 14 and the notch 16 communicates with the rotary groove 15.

[0032] There are two retaining pieces 12 and they are symmetrically arranged on the outer wall of the retaining ring 11. There are two blocking parts 14 and the notches 16 of the blocking parts 14 correspond to the retaining pieces 12 respectively. After the retaining pieces 12 are aligned with the notches 16 and inserted and then rotated clockwise or counterclockwise, the two retaining pieces 12 can enter and be limited in the rotary groove 15 at the same time. In this embodiment, the retaining pieces 12 and the notches 16 are preferably fan-shaped, and they can also be other geometric shapes, such as rectangular, circular, etc.

[0033] A channel hole 17 is arranged at the water inlet end 3 of the pipe joint 2, and a pipe fitting 9 that is fixed to the upper end of the pipe joint 2 and communicates with the channel hole 17 is also provided. A sealing gasket 23 is also arranged above the pipe fitting 9. The pipe fitting 9 is divided into two types. One type is: the pipe fitting 9 includes a pipe body 18 and positioning pieces 19 that are symmetrically arranged on both sides of the pipe body 18. An internal thread is arranged inside the pipe body 18. Positioning grooves 20 are arranged on both sides of the upper end of the channel hole 17 at the water inlet end 3 of the pipe joint 2. The pipe body 18 is inserted into the channel hole 17 and the positioning pieces 19 are in plug-in fit with the positioning grooves 20.

[0034] The other type is: the pipe fitting 9 includes a pipe body 18 and positioning pieces 19 that are symmetrically arranged on both sides of the pipe body 18. A connecting column 21 is arranged at the center of the pipe body 18 and an internal thread is arranged inside the connecting column 21. A plurality of connecting ribs 22 are arranged in an array between the outer wall of the connecting column 21 and the inner wall of the pipe body 18. Positioning grooves 20 are arranged on both sides of the upper end of the channel hole 17 at the water inlet end 3 of the pipe joint 2. The pipe body 18 is inserted into the channel hole 17 and the positioning pieces 19 are in plug-in fit with the positioning grooves 20.

[0035] It is possible to produce pipe fittings 9 of two specifications. According to the actual situation, the first or the second pipe fitting 9 can be welded. The first pipe fitting 9 is directly thread-connected to the bounce core assembly on the market. The second one is suitable for pull-up fittings. Regarding how the pipe fitting 9 is combined with the bounce core or pull-up fittings on the market, this is the prior art and will not be specifically described. It can be selected according to the actual situation.

[0036] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sewer pipe assembly, comprising a flexible sewer pipe (1) and a pipe joint (2), the pipe joint (2) including a water inlet end (3) and a water outlet end (4), characterized in that: The pipe joint (2) is provided with a water outlet pipe (5) corresponding to the position of the water outlet end (4). The outer end of the water outlet pipe (5) is fixedly or integrally provided with a joint head (6). The outer wall of the joint head (6) is provided with an external thread (7). All the outer end points of the external thread (7) projected onto the section coinciding with the central axis of the joint head (6) form two groups of end point groups arranged along two oblique lines (8). The distance from the inner end of the oblique line (8) to the central axis is greater than the distance from the outer end of the oblique line (8) to the central axis. At least part of the flexible water pipe (1) has a consistent diameter, and the inner wall of the part with a consistent diameter is provided with an internal thread that is threadedly connected to the joint head (6). When the part of the flexible water pipe (1) with a consistent diameter is threadedly connected to the joint head (6), it gradually expands.

2. The drain pipe assembly according to claim 1, characterized in that: The outer wall of the joint head (6) is a conical surface (10), and the diameter of the conical surface (10) gradually decreases from the inside to the outside. The external thread (7) is provided on the conical surface (10).

3. The drain pipe assembly according to claim 1, characterized in that: The flexible water pipe (1) is a spiral corrugated pipe and is made of plastic.

4. The drain pipe assembly according to any one of claims 1 to 3, characterized in that: A retaining ring (11) is provided on the water pipe at the inner end of the external thread (7).

5. The downpipe assembly according to claim 4, characterized in that: The outer wall of the retaining ring (11) is provided with retaining pieces (12). A rotary cover (13) that cooperates with the retaining ring (11) is sleeved outside the flexible water pipe (1). The inner end of the rotary cover (13) is provided with a blocking portion (14), and a rotary groove (15) is opened inside the blocking portion (14). The outside of the blocking portion (14) is provided with a notch (16) that is adapted to the shape of the retaining piece (12), and the notch (16) communicates with the rotary groove (15).

6. The downpipe assembly according to claim 5, characterized in that: There are two retaining pieces (12), which are symmetrically arranged on the outer wall of the retaining ring (11). There are two blocking portions (14), and the notches (16) of the blocking portions (14) correspond to the retaining pieces (12) respectively. After the retaining pieces (12) are aligned with the notches (16) and inserted, rotating clockwise or counterclockwise can make the two retaining pieces (12) enter and be limited in the rotary groove (15) at the same time.

7. The downpipe assembly according to claim 5 or 6, characterized in that: Both the retaining piece (12) and the notch (16) are fan-shaped.

8. The drain pipe assembly according to claim 1, characterized in that: A channel hole (17) is provided at the water inlet end (3) of the pipe joint (2), and a pipe fitting (9) that is fixed to the upper end of the pipe joint (2) and communicates with the channel hole (17) is provided.

9. The drain pipe assembly according to claim 8, wherein: The pipe fitting (9) includes a pipe body (18) and positioning pieces (19) symmetrically arranged on both sides of the pipe body (18). An internal thread is provided inside the pipe body (18). Positioning grooves (20) are provided on both sides of the upper end of the channel hole (17) at the water inlet end (3) of the pipe joint (2). The pipe body (18) is inserted into the channel hole (17), and the positioning pieces (19) are inserted and matched with the positioning grooves (20).

10. The downpipe assembly according to claim 8, wherein: The pipe fitting (9) includes a pipe body (18) and positioning pieces (19) symmetrically arranged on both sides of the pipe body (18). A connecting column (21) is provided at the center of the pipe body (18), and an internal thread is provided in the connecting column (21). A plurality of connecting ribs (22) are arranged in an array between the outer wall of the connecting column (21) and the inner wall of the pipe body (18). Positioning grooves (20) are provided at both sides of the upper end of the channel hole (17) at the water inlet end (3) of the pipe joint (2). The pipe body (18) is inserted into the channel hole (17), and the positioning pieces (19) are inserted and matched with the positioning grooves (20).

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