Detachable sealing connection structure and cleaning device

Abstract

The utility model is applicable to the technical field of surface cleaning equipment, in particular to a detachable sealing connection structure and a cleaning device, comprising a dirt suction pipe and a pipe joint, one end of the dirt suction pipe opposite to the pipe joint is provided with an abutting surface, and one end of the pipe joint opposite to the dirt suction pipe is provided with a boss part and a convex tongue part. The abutting face is arranged to be a flush end face, the end face of the boss part is flush with the abutting face, the side, opposite to the sewage suction pipe, of the protruding tongue part protrudes towards the sewage suction pipe in an arc shape, at least part of the area of the protruding tongue part is closer to the abutting face than the boss part, and during connection, the end, opposite to the pipe connector, of the sewage suction pipe abuts against the end, opposite to the pipe connector, of the sewage suction pipe. And the end surface of the boss part and the convex tongue part are respectively propped against the propping surface. The utility model aims to solve the technical problem that the existing structure is easy to hide dirt and hang hair.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface cleaning equipment, and particularly relates to a detachable sealing connection structure and a cleaning device. Background Art

[0002] Common surface cleaning equipment includes: floor cleaning equipment (such as floor scrubbers, intelligent sweeping robots, vacuum cleaners), tabletop cleaning equipment, and wall cleaning equipment (such as glass washing machines), etc. Among them, there is a type of cleaning equipment equipped with a detachable sewage tank. A sewage suction pipe is provided in the sewage tank, and a pipe joint is provided at the sewage tank installation position. When the sewage tank is installed in place, the sewage suction pipe is automatically connected to the pipe joint, and when the sewage tank is removed from the installation position, the sewage suction pipe is automatically separated from the pipe joint. Since the sewage tank sucks sewage and dirt into the sewage tank by using the principle of negative pressure, it is necessary to ensure the connection tightness between the sewage suction pipe and the pipe joint. Although the existing structure can meet the requirements in terms of tightness, the existing structure is prone to dirt accumulation and hair hanging at the connection between the sewage suction pipe and the pipe joint. Therefore, it is necessary to improve this. Content of the Utility Model

[0003] One of the purposes of the utility model is to provide a detachable sealing connection structure, aiming to solve the technical problem that the existing structure is prone to dirt accumulation and hair hanging.

[0004] The technical solution of the utility model is realized as follows:

[0005] A detachable sealing connection structure includes a sewage suction pipe and a pipe joint. One end of the sewage suction pipe opposite to the pipe joint is provided with an abutting surface, and one end of the pipe joint opposite to the sewage suction pipe is provided with a boss portion and a convex tongue portion. The boss portion extends along the axial direction of the pipe joint on the inner side, and the convex tongue portion extends along the radial direction of the pipe joint on the outer side. A substantially V-shaped angle is formed between the boss portion and the convex tongue portion. The abutting surface is set as a flat end surface. The end surface of the boss portion is flush with the abutting surface. The side of the convex tongue portion relative to the sewage suction pipe is arcuately convex towards the sewage suction pipe and at least part of the area is closer to the abutting surface than the boss portion. When connecting, one end of the sewage suction pipe and the pipe joint are abutted against each other, and the end surface of the boss portion and the convex tongue portion are respectively abutted against the abutting surface.

[0006] Optionally, the sewage suction pipe is made of a hard material, and the pipe joint is made of a soft material.

[0007] Optionally, the sewage suction pipe and the pipe joint are provided with pipe holes of the same diameter.

[0008] Optionally, the inner corner of the boss portion is set as a right angle, and the inner corner of one end of the sewage suction pipe opposite to the pipe joint is set as an arc chamfer.

[0009] Optionally, the arc radius of the arc chamfer is set to 1 to 2 millimeters.

[0010] Optionally, the sewage suction pipe and the pipe joint are coaxially connected.

[0011] Optionally, it further includes a sewage guiding pipe, and one end of the pipe joint opposite to the sewage suction pipe is fixed on the sewage guiding pipe.

[0012] Optionally, the sewage guiding pipe is made of a rigid material, and the pipe joint and the sewage guiding pipe are integrally formed by secondary injection molding.

[0013] Another object of the present invention is to provide a cleaning device, an installation groove is provided on the main body, the sewage tank is detachably installed in the installation groove, and it further includes the detachable sealing connection structure as described in any one of the above, wherein the sewage suction pipe is arranged on the sewage tank, and the pipe joint is arranged on the main body.

[0014] In the detachable sealing connection structure of the present invention, the main function of the tongue portion during connection is sealing, and the main function of the boss portion is to ensure the smoothness of the connection part to prevent dirt accumulation and hair hanging during use. The boss portion and the tongue portion are separated into various independent parts through a V-shaped angle, so that they can displace independently and do not interfere with each other during connection, thereby ensuring that various above functions can be realized and are reliable. Therefore, by providing independent boss portions and tongue portions respectively for smooth transition at the connection part and sealing at the connection part, the detachable sealing connection structure of the present invention has the advantages of not being prone to dirt accumulation and hair hanging, and having a good sealing effect.

[0015] The cleaning device of the present invention has the same beneficial effects due to the above-mentioned detachable sealing connection structure.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Description of the Drawings

[0017] Figure 1 It is a cross-sectional view of the cleaning device when the sewage tank is installed provided by the embodiment of the present invention;

[0018] Figure 2 It is a cross-sectional view of the cleaning device when the sewage tank is disassembled provided by the embodiment of the present invention;

[0019] Figure 3 It is an enlarged view of the detachable sealing connection structure when connected provided by the embodiment of the present invention;

[0020] Figure 4 It is a cross-sectional view of the integrated sewage guiding pipe and pipe joint provided by the embodiment of the present invention.

[0021] The names and labels of each component in the figure are as follows:

[0022] 10. Suction sewage pipe; 11. Contact surface; 20. Pipe joint; 21. Boss part; 22. Tongue part; 23. V-shaped angle; 30. Sewage tank; 40. Main body; 41. Installation groove; 50. Guide sewage pipe. Detailed implementation mode

[0023] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] Please refer to the attached Figures 1-4 As shown, a detachable sealing connection structure provided by an embodiment of the present utility model includes a suction sewage pipe 10 and a pipe joint 20. One end of the suction sewage pipe 10 opposite to the pipe joint 20 is provided with a contact surface 11. One end of the pipe joint 20 opposite to the suction sewage pipe 10 is provided with a boss part 21 and a tongue part 22. The boss part 21 extends along the axial direction of the pipe joint 20 on the inner side, and the tongue part 22 extends along the radial direction of the pipe joint 20 on the outer side. A substantially V-shaped angle 23 is formed between the boss part 21 and the tongue part 22. The contact surface 11 is set as a flat end surface. The end surface of the boss part 21 is flush with the contact surface 11. The side of the tongue part 22 relative to the suction sewage pipe 10 is convex towards the suction sewage pipe 10 in an arc shape and at least part of the area is closer to the contact surface 11 than the boss part 21. When connecting, one end of the suction sewage pipe 10 opposite to the pipe joint 20 is abutted, and the end surface of the boss part 21 and the tongue part 22 are respectively abutted against the contact surface 11. It should be noted that the existing detachable sealing connection structures either only include a boss structure similar to the above, and the sealing performance is poor during connection; or only include a tongue structure similar to the above. Although the sealing is ensured during connection, there is no smooth transition at the connection (there is an inner concave gap between the bent part of the tongue structure and the contact surface 11 of the suction sewage pipe 10), resulting in easy dirt collection and hair hanging. In the detachable sealing connection structure of the present utility model, the main function of the tongue part 22 during connection is sealing, and the main function of the boss part 21 is to ensure the smoothness of the connection part to prevent dirt collection and hair hanging during use. The boss part 21 and the tongue part 22 are separated into various independent parts through the V-shaped angle 23, so that they can displace independently and do not interfere with each other during connection, thereby ensuring that various above functions can be realized and are reliable. Therefore, by setting the independent boss part 21 and tongue part 22 respectively for smooth transition at the connection part and sealing at the connection part, the detachable sealing connection structure of the present utility model has the advantages of not being easy to collect dirt and hair and having a good sealing effect.

[0025] Specifically, the sewage suction pipe 10 is made of a rigid material, and the pipe joint 20 is made of a soft material. When the sewage suction pipe 10 and the pipe joint 20 are connected relatively, due to the action of a certain pressing force, the pipe joint 20 is compressed due to the characteristics of the soft material under pressure at the boss portion 21 and the tongue portion 22 respectively. At this time, the abutting surfaces 11 are closely abutted to achieve a sealing effect. The sewage suction pipe 10 and the pipe joint 20 are coaxially connected, and the sewage suction pipe 10 and the pipe joint 20 are provided with pipe holes of the same diameter, so that the hole wall of the sewage suction pipe 10 is completely opposite to the hole wall of the pipe joint 20 and has a smooth transition after connection, and no step is formed at the connection (steps are likely to hide dirt and hang hair). The inner corner of the boss portion 21 is set as a right angle, and the inner corner of one end of the sewage suction pipe 10 relative to the pipe joint 20 is set as an arc chamfer. Such a design is considered because the soft material of the pipe joint 20 will produce a certain shrinkage when connected. The inner right-angle corner of the compressed pipe joint 20 just produces a certain inward convex deformation, so as to cooperate with the arc chamfer of the inner corner of the sewage suction pipe 10 to fit and fill, so as to achieve a seamless connection. The arc radius of the arc chamfer is set to 1 to 2 millimeters. It should be noted that the compression deformation of the pipe joint 20 is caused by the magnitude of the pressure and the material characteristics, and is generally controlled between 1 and 2 millimeters. The arc radius of the arc chamfer is adapted to the magnitude of the compression deformation of the pipe joint 20, that is, when the compression deformation of the pipe joint 20 is larger, the arc radius of the arc chamfer can be set correspondingly larger, and vice versa.

[0026] It further includes a sewage guiding pipe 50, and one end of the pipe joint 20 opposite to the sewage suction pipe 10 is fixed on the sewage guiding pipe 50. Optionally, the sewage guiding pipe 50 is made of a rigid material, and the pipe joint 20 and the sewage guiding pipe 50 are integrally formed by secondary injection molding.

[0027] An embodiment of the present invention further provides a cleaning device. An installation groove 41 is provided on the main body 40, and the sewage tank 30 is detachably installed in the installation groove 41. It further includes the detachable sealing connection structure as described above. Among them, the sewage suction pipe 10 is arranged on the sewage tank 30, and the pipe joint 20 is arranged on the main body 40.

[0028] In summary, for the detachable sealed connection structure of the present utility model, during connection, the main function of the tongue portion 22 is sealing, and the main function of the boss portion 21 is to ensure smoothness at the connection to prevent dirt accumulation and hair entanglement during use. The V-shaped angle 23 separates the boss portion 21 and the tongue portion 22 into various independent parts, enabling independent displacement without interference during connection, thus ensuring that various above-mentioned functions can be achieved reliably. Therefore, by providing the independent boss portion 21 and tongue portion 22 respectively for smooth transition and sealing at the connection, the detachable sealed connection structure of the present utility model has the advantages of being not prone to dirt accumulation and hair entanglement and having good sealing effect.

[0029] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0030] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

[0031] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A detachable sealed connection structure, characterized in that: It includes a sewage suction pipe and a pipe joint, wherein the sewage suction pipe is provided with a contact surface at one end opposite to the pipe joint, and the pipe joint is provided with a boss portion and a tongue portion at one end opposite to the sewage suction pipe, the boss portion is located on the inner side and extends along the axial direction of the pipe joint, the tongue portion is located on the outer side and extends along the radial direction of the pipe joint, and a roughly V-shaped angle is formed between the boss portion and the tongue portion, the contact surface is set to be a flush end surface, the end surface of the boss portion is flush with the contact surface, the tongue portion has an arc-shaped protrusion on one side relative to the sewage suction pipe toward the sewage suction pipe and at least a partial area is closer to the contact surface than the boss portion. When connected, the sewage suction pipe is contacted with the end opposite to the pipe joint, and the end surface of the boss portion and the tongue portion respectively contact the contact surface.

2. The detachable sealing connection structure according to claim 1, characterized in that: The sewage suction pipe is made of hard material, and the pipe joint is made of soft material.

3. The detachable sealing connection structure according to claim 2, characterized in that: The sewage suction pipe and the pipe joint are provided with pipe holes with the same diameter.

4. The detachable sealing connection structure according to claim 3, characterized in that: The inner corner of the boss portion is set as a right angle, and the inner corner of the sewage suction pipe relative to one end of the pipe joint is set as an arc chamfer.

5. The detachable sealing connection structure according to claim 4, characterized in that: The arc radius of the arc chamfer is set to 1 to 2 mm.

6. The detachable sealing connection structure according to any one of claims 3 to 5, characterized in that: The sewage suction pipe and the pipe joint are coaxially connected.

7. The detachable sealing connection structure according to claim 1, characterized in that: It also includes a sewage guide pipe, and the end of the pipe joint opposite to the sewage suction pipe is fixed on the sewage guide pipe.

8. The detachable sealing connection structure according to claim 7, characterized in that: The sewage guide pipe is made of hard material, and the pipe joint and the sewage guide pipe are made of one piece by secondary injection molding.

9. A cleaning device, comprising a main body and a sewage tank, wherein the main body is provided with a mounting groove, and the sewage tank is detachably mounted in the mounting groove, characterized in that: It also includes a detachable sealed connection structure as described in any one of claims 1 to 8, wherein the sewage suction pipe is arranged on the sewage tank, and the pipe joint is arranged on the main body.

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