A flexible suction tube for cleaning equipment

Abstract

The present invention relates to a bendable suction tube for cleaning equipment, which belongs to the technical field of cleaning equipment, and solves the problem that the existing suction tube will cause suction force loss under the premise of ensuring the service life. The bendable suction tube for cleaning equipment includes: a first tube body, a second tube body; the first tube body and the second tube body are hinged by a rotating structure; the rotating structure includes an internal structure and an external structure, and the external structure covers the internal structure; the internal structure is a rotating tube body, and the first tube body and the second tube body are connected through the internal structure; the external structure includes a plurality of slides that at least partially overlap. The rotating inner side of the rotating structure of the present invention is provided with a slide, which can ensure the rigidity of the outer shell, and can also ensure the sealing of the outer shell, improve the consistency of the external structure of the rotating structure, prevent foreign matter such as dust from entering the interior of the rotating structure, causing rotation jamming, thereby having a longer service life and will not cause a reduction in suction force.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, and in particular to a bendable suction pipe for cleaning equipment. Background Art

[0002] Cleaning equipment, especially vacuum cleaners, are usually used with a long suction pipe. However, when cleaning places such as under beds, under sofas, and behind cabinets, the straight suction pipe is inconvenient to use, and generally needs to be configured with a bendable suction pipe.

[0003] Existing bent suction pipes mainly adopt two structures: first, a hose such as a bellows is used to realize the bending of the suction pipe, but since the hose is made of flexible material, it is prone to aging and breakage, which directly causes damage to the suction pipe and reduces the service life; the second is a rigid structure, but because it is necessary to ensure the dust collection function and avoid air leakage, it is often necessary to set up a relatively complex airflow path, which not only increases the total stroke of the airflow, but also increases the number of curved channels in the airflow path, which directly increases the weakening of the airflow path on the suction force of the fan. Summary of the invention

[0004] In view of the above analysis, the present invention aims to provide a bendable suction pipe for cleaning equipment, so as to solve the problem that the existing suction pipe may cause suction force loss while ensuring the service life.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions:

[0006] In the technical solution of the present invention, a bendable suction pipe for cleaning equipment comprises: a first pipe body, a second pipe body;

[0007] The first tube body and the second tube body are hinged by a rotating structure; the rotating structure includes an internal structure and an external structure, and the external structure covers the internal structure; the internal structure is a rotating tube body, and the first tube body and the second tube body are connected by the internal structure; the external structure includes a plurality of slides that at least partially overlap.

[0008] In the technical solution of the present invention, the rotation range of the rotating structure is 0° to 90°, which defines the inner side and the outer side of the rotation;

[0009] The slide is arranged on the rotating inner side of the outer structure;

[0010] The external structure also includes a first shell and a second shell, the first shell covers the first tube body, and the second shell covers the second tube body; the first shell and the second shell are provided with a clearance gap at the inner side of the rotation, and the slide is arranged in the clearance gap; the first shell and the slide, the slides and the slides, and the slide and the second shell are at least partially overlapped.

[0011] In the technical solution of the present invention, slide rails and position limiting structures are provided between the first shell and the slide, between the slides and between the slides and between the slide and the second shell.

[0012] In the technical solution of the present invention, at the rotating outer side of the rotating structure, the first housing at least partially overlaps with the second housing and is in sliding contact with the second housing;

[0013] At the rotating outer side of the rotating structure, the first shell is located on the outer side of the second shell, and an elastic member is provided on the outer side of the first shell.

[0014] In the technical solution of the present invention, the internal structure includes a hinged air inlet pipe and an air outlet pipe;

[0015] A first opening is provided at the position where the air inlet pipe contacts the air outlet pipe, and a second opening is provided at the position where the air outlet pipe contacts the air inlet pipe; when the air inlet pipe rotates relative to the air outlet pipe, the shape swept by the first opening is the same as the shape of the second opening.

[0016] In the technical solution of the present invention, the size of the first opening is smaller than or equal to the size of the air inlet of the air inlet pipe; at the hinge between the air inlet pipe and the air outlet pipe, the outer side of the air inlet pipe is at least a part of a rotating body with the hinge axis as the center line.

[0017] In the technical solution of the present invention, a spoon-shaped channel with the hinge axis as the center line is provided at the second opening; the spoon-shaped channel is connected to the air outlet of the air outlet pipe.

[0018] In the technical solution of the present invention, main cover plates are provided at both ends of the rotating structure along the hinge axis; and a transparent cover plate is provided in the center of the main cover plates.

[0019] In the technical solution of the present invention, the main cover plate and the transparent cover plate form a spherical crown-shaped structure.

[0020] In the technical solution of the present invention, a first connecting portion is provided at one end of the first tube body away from the rotating structure; and a second connecting portion is provided at one end of the second tube body away from the rotating structure.

[0021] The technical solution of the present invention can achieve at least one of the following effects:

[0022] 1. The rotating inner side of the rotating structure of the present invention is provided with a sliding piece, which can ensure the rigidity and sealing of the outer shell, improve the consistency of the external structure of the rotating structure, and prevent foreign matter such as dust from entering the interior of the rotating structure and causing rotation jam;

[0023] 2. The single-ended elastic member is arranged on the rotating outer side of the rotating structure of the present invention, which is not only convenient for production and processing, but also avoids surface damage of the external structure caused by the elastic structure, and can also play a shock-absorbing role when the suction pipe is bent and contacts the ground, reducing bumps and preventing the ground from being scratched;

[0024] 3. The internal structure of the rotating structure of the present invention is provided with a spoon-shaped channel, which reduces the increase in the total stroke and number of bends of the airflow passage caused by the rotating structure, thereby weakening the influence of the bends on the airflow suction force.

[0025] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0027] Figure 1 A top view of an embodiment of the present invention;

[0028] Figure 2 A cross-sectional view of an embodiment of the present invention in a straightened state;

[0029] Figure 3 A cross-sectional view of a bent state of an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of airflow in a straightened state according to an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of airflow in a bent state according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1-first connecting part; 2-second connecting part; 3-main cover plate; 4-transparent cover plate; 5-sliding plate; 6-first outer shell; 7-second outer shell; 8-elastic member; 9-inlet pipe, 10-outlet pipe; DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection, which can be a mechanical connection, or an electrical connection, which can be a direct connection, or can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0037] The embodiments of the present invention are mainly aimed at improving the bendable suction pipe. When the suction pipe is bent, the inner side of the suction pipe is compressed and the outer side is stretched. For the convenience of explanation, it is stipulated that the inner side of the suction pipe in the bent state is the "rotation inner side" of the suction pipe, and the outer side is the "rotation outer side".

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, the embodiment of the present invention provides a bendable suction pipe for cleaning equipment, including: a first pipe body, a second pipe body; the first pipe body and the second pipe body are hinged by a rotating structure; the rotating structure includes an internal structure and an external structure, and the external structure covers the internal structure; the internal structure is a rotating pipe body, and the first pipe body and the second pipe body are connected through the internal structure; the external structure includes a plurality of at least partially overlapping slides 5. When the suction pipe is in a straight state, the plurality of overlapping slides 5 are pulled apart, thereby forming a shell of the rotating structure together with the external structure, thereby preventing dust or foreign matter from entering the rotating structure, avoiding the rotating structure from being stuck due to the entry of foreign matter, and extending the service life of the embodiment of the present invention.

[0039] Considering that the bendable suction tube is usually used to clean narrow gaps such as under beds, under sofas, and behind cabinets, the rotation range of the rotating structure is 0°~90°. In actual use, for the stability of the rotating structure and safety of long-term use, the rotation range can be slightly larger than 0°~90°.

[0040] The embodiment of the present invention adopts a rigid structure to ensure structural strength, thereby increasing the service life of the suction pipe. When bending, the outer shell structure on the inner side of the rotation will be compressed. Usually, an open-type structure is used to give way. However, the open-type structure will cause dust and foreign matter to enter the outer shell, which may easily cause the rotation structure to get stuck. The embodiment of the present invention sets a multi-layer sliding sheet 5 on the inner side of the rotation to solve the above problem. Specifically, Figure 2 , Figure 3As shown, the external structure also includes a first shell 6 and a second shell 7, the first shell 6 covers the first tube body, and the second shell 7 covers the second tube body; the first shell 6 and the second shell 7 are provided with a clearance gap at the inner side of the rotation, and the slide 5 is arranged in the clearance gap; the first shell 6 and the slide 5, the slides 5 and the slide 5, and the slide 5 and the second shell 7 are at least partially overlapped.

[0041] In the embodiment of the present invention, the first shell 6, the slide 5 and the second shell 7 are used together as the shell of the rotating structure. The first shell 6 and the slide 5, the slide 5 and the slide 5, and the slide 5 and the second shell 7 can all overlap. When the rotating structure is bent, the first shell 6, the slide 5 and the second shell 7 overlap with a large area to achieve compression of the shell of the rotating structure on the inner side of the rotation. When the rotating structure is straightened, the first shell 6, the slide 5 and the second shell 7 are pulled apart to achieve stretching of the shell of the rotating structure on the outer side of the rotation. The provision of the slide 5 can not only ensure that the shell of the rotating structure on the inner side of the rotation is always a rigid structure, thereby extending the service life, but also prevent foreign matter such as dust from entering the rotating structure, thereby avoiding dust from causing the rotating structure to get stuck, thereby extending the service life.

[0042] In the embodiment of the present invention, a slide rail is provided between the first housing 6 and the slide 5, between the slides 5 and the slide 5, and between the slide 5 and the second housing 7, and a limiting structure is provided, that is, a slide rail is provided on the contact surface between every two contacting parts, one slide rail is provided between the two parts in sliding contact, and the other is provided with a limiting structure, the slide rail is used for sliding guide of the slide 5, so that all the slides 5 can slide circumferentially along the hinge axis of the rotating structure, and the limiting structure is used to prevent the sliding disengagement between the slides 5, and dust will enter the rotating structure from the disengagement point, which may cause the rotating structure to get stuck. The limiting sliding between the limiting structure and the slide rail is realized between the first housing 6 and the slide 5, between the slides 5 and the slide 5, and between the slide 5 and the second housing 7, which can not only ensure that the stacking is always prevented from entering by foreign matter, but also enable the first housing 6 and the slide 5, between the slides 5 and the slide 5, and between the slide 5 and the second housing 7 to slide circumferentially along the hinge axis.

[0043] Optionally, a slide rail is provided between the first shell 6 and the slide 5, and a plurality of arc-shaped slide rails are provided on the axial end face of the first shell 6 along the hinge axis, each slide rail corresponds to a slide 5, and limiting structures are provided at both axial ends of the slide 5 along the hinge axis. The sliding of the slide is achieved by sliding the limiting structures in the corresponding slide rails, which can ensure that the stacking is always prevented from entering by foreign objects, and can also enable the first shell 6 and the slide 5, the slides 5 and the slides 5, and the slide 5 and the second shell 7 to slide circumferentially along the hinge axis.

[0044] In the embodiment of the present invention, the number of the slides 5 is 2, and the angle of overlap between the two slides 5 and the first shell 6 and the second shell 7 is 45°. When the suction pipe is fully straightened, the two slides 5 are fully opened and protect the opening between the first shell 6 and the second shell 7 located on the inner side of the rotation. When the suction pipe is fully bent to 90°, the two slides 5 are fully overlapped, and the opening between the first shell 6 and the second shell 7 located on the inner side of the rotation is closed. Therefore, whether the suction pipe is straightened or bent, it can ensure that the outer shell of the rotating structure on the inner side of the rotation is always a rigid structure, and foreign matter such as dust can be prevented from entering the rotating structure, so as to avoid dust from causing the rotating structure to get stuck, thereby extending the service life.

[0045] The embodiment of the present invention adopts a rigid structure to ensure structural strength, thereby increasing the service life of the suction pipe. When bending, the outer shell structure of the rotating outer side will be stretched, and an open-type giving way structure is usually adopted. However, the open-type structure will cause dust and foreign matter to enter the shell, which may easily cause the rotating structure to get stuck. The present invention adopts the form of direct sliding overlap of the first shell 6 and the second shell 7. Specifically, at the outer side of the rotating structure, the first shell 6 at least partially overlaps with the second shell 7 and is in sliding contact.

[0046] When using the embodiment of the present invention, the rotating outer side is usually close to the ground or wall waiting to clean the work surface. Therefore, the rotating structure may collide with the work surface. In the embodiment of the present invention, at the rotating outer side of the rotating structure, the first shell 6 is located on the outside of the second shell 7, and an elastic member 8 is provided on the outside of the first shell 6. Since the first shell 6 and the second shell 7 are usually made of rigid materials such as plastic or metal, they are easily damaged when they collide. The elastic member 8 can be used for shock absorption and can also prevent the rotating structure of the suction pipe from scratching the work surface.

[0047] Since the elastic member 8 is at the outermost side of the rotating structure, for the convenience of installation and setting of the elastic member 8, no slide 5 is set on the outer side of the rotating structure in the embodiment of the present invention. However, it is difficult to directly process the elastic member 8 on the surface of the part during processing of rigid materials such as plastic and metal. Therefore, the elastic member 8 is a separate component relative to the first shell 6.

[0048] Exemplarily, in the embodiment of the present invention, the elastic member 8 is a rubber protective pad.

[0049] To sum up, the external structure of the embodiment of the present invention adopts rigid materials to ensure a long service life, and realizes the shape change of the rotating inner side and the rotating outer side through the first shell 6, the slide 5 and the second shell 7, and can also prevent foreign matter such as dust from entering the rotating structure and causing the rotating structure to get stuck.

[0050] In the embodiment of the present invention, the internal structure is used to provide an airflow path for the suction pipe. Figure 4 , Figure 5 As shown, the internal structure includes an articulated air inlet pipe 9 and an air outlet pipe 10; a first opening is provided at the position where the air inlet pipe 9 contacts the air outlet pipe 10, and a second opening is provided at the position where the air outlet pipe 10 contacts the air inlet pipe 9; when the air inlet pipe 9 rotates relative to the air outlet pipe 10, the shape swept by the first opening is the same as the shape of the second opening. The air inlet pipe 9 is basically a circular pipe, and the air flow enters the air outlet pipe 10 through the first opening and the second opening. Since the air inlet pipe 9 and the air outlet pipe 10 may bend, in the embodiment of the present invention, the first opening is made smaller than the second opening, and the shape of the second opening is the shape swept by the first opening when rotating, that is, the second opening is a curved opening, so that the air flow flowing out of the first opening can always flow into the air outlet pipe 10 through the second opening.

[0051] In the embodiment of the present invention, at the hinge between the air inlet pipe 9 and the air outlet pipe 10, the outer side of the air inlet pipe 9 is at least a part of a rotating body with the hinge axis as the center line. Since the outer side of the air inlet pipe 9 is a rotating body, the outer side of the air inlet pipe 9 can always contact the edge of the second opening, thereby ensuring that the hinge between the air inlet pipe 9 and the air outlet pipe 10 does not leak air to the outside.

[0052] Since the shape and size of the second opening are relatively large, in order to appropriately reduce the volume of the rotating structure without affecting the suction force, in the embodiment of the present invention, the size of the first opening is slightly smaller than or equal to the air inlet size of the air inlet pipe 9, thereby significantly reducing the size of the second opening. The first opening is the point with the smallest cross-sectional size in the entire air flow path. Therefore, the slightly reduced first opening and the significantly reduced second opening have negligible effects on the suction force of the vacuum cleaner.

[0053] In the embodiment of the present invention, the air inlet size of the air inlet pipe 9 is larger than the size of the first opening, and the entire air inlet pipe 9 is a uniformly variable diameter pipe, so that the cross-sectional area change of the airflow entering the air inlet pipe 9 is more uniform and smooth, avoiding the airflow shock caused by the sudden change of the airflow cross-sectional area, resulting in the loss of suction force recovery.

[0054] When the suction pipe is in a bent state, the direction of the airflow path changes. Once the bend is too obvious, the airflow will be blocked, which greatly reduces the suction force of the vacuum cleaner and reduces the cleaning efficiency of the vacuum cleaner. In the embodiment of the present invention, a spoon-shaped channel with the hinge axis as the center line is provided at the second opening; the spoon-shaped channel is connected to the air outlet of the air outlet pipe 10. Since the spoon-shaped channel is a curved channel with a large curvature, and the obvious bend of the entire channel only exists at the contact point between the first opening and the second opening, compared with the existing multi-bend airflow paths, the embodiment of the present invention can weaken the loss of suction force caused by the bent airflow path, thereby ensuring a higher suction force, and the vacuum cleaner also has a higher cleaning efficiency.

[0055] In summary, the internal structure implemented in the present invention can have fewer bends, a smoother airflow path, and a greater suction force while achieving the bending of the airflow path.

[0056] like Figure 1 As shown, in the embodiment of the present invention, main cover plates 3 are provided at both ends of the rotating structure along the hinge axis to protect the hinge; a transparent cover plate 4 is provided in the center of the main cover plate 3 to facilitate the user to observe the internal situation of the rotating structure.

[0057] In addition, the main cover plate 3 and the transparent cover plate 4 form a spherical crown-shaped structure, that is, the rotating structure is spherical as a whole, making the rotating structure more beautiful.

[0058] Also for the sake of aesthetics, processing difficulty and processing cost, in the embodiment of the present invention, the first shell 6 and the second shell 7 are only arranged at the rotating structure, the air inlet pipe 9 and the air outlet pipe 10 are only arranged at the rotating structure, and after the first tube body and the second tube body are separated from the area of ​​the rotating structure, only one layer of tube body is provided, and the first tube body and the air inlet pipe 9 are an integral structure, and the second tube body and the air inlet pipe 9 are an integral structure. In addition to being more beautiful, it can also reduce the processing difficulty and materials of the suction pipe, thereby reducing the processing cost of the embodiment of the present invention.

[0059] In order to facilitate the connection of the suction pipe with other equipment, in an embodiment of the present invention, a first connecting portion 1 is provided at the end of the first tube body away from the rotating structure, which is used to connect the brush head and other components of the vacuum cleaner; a second connecting portion 2 is provided at the end of the second tube body away from the rotating structure, which is used to connect to the suction port of the vacuum cleaner host.

[0060] Exemplarily, the first connection part 1 and the second connection part 2 are connected in a plug-in manner and locked by a snap-on release structure to prevent the connection from being disconnected.

[0061] It should be noted that the first connection part 1 and the second connection part 2 can adopt different connection methods and locking methods, such as threaded connection and locking. Considering that the components of existing vacuum cleaners all adopt a universal design, in the embodiment of the present invention, the first connection part 1 and the second connection part 2 can be set as a universal connection structure according to actual needs.

[0062] In summary, an embodiment of the present invention provides a bendable suction tube for a cleaning device, and a slide 5 is provided on the rotating inner side of the rotating structure of the present invention, which can ensure the rigidity of the outer shell and the sealing of the outer shell, improve the consistency of the external structure of the rotating structure, and prevent foreign matter such as dust from entering the interior of the rotating structure to cause rotation jamming; a single-ended elastic member 8 is provided on the rotating outer side of the rotating structure of the present invention, which is not only convenient for production and processing, and avoids surface damage of the external structure caused by the setting of the elastic structure, but also can play a shock-absorbing role when the suction tube is bent and contacts the ground, reduce bumps, and prevent the ground from being scratched; the internal structure of the rotating structure of the present invention is provided with a spoon-shaped channel, which reduces the increase in the total stroke of the airflow path and the number of bends caused by the rotating structure, thereby weakening the influence of the bends on the airflow suction force.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A bendable suction pipe for cleaning equipment, characterized in that: The bendable suction pipe for cleaning equipment comprises: a first pipe body and a second pipe body; The first tube body and the second tube body are hingedly connected via a rotating structure; the rotating structure comprises an internal structure and an external structure, the external structure covering the internal structure; the internal structure is a rotating tube body, the first tube body and the second tube body are connected via the internal structure; the external structure comprises a plurality of slides (5) that at least partially overlap; The rotation range of the rotating structure is 0° to 90°, which defines the inner side and the outer side of the rotation; The sliding plate (5) is arranged on the rotating inner side of the external structure; The external structure further comprises a first outer shell (6) and a second outer shell (7), wherein the first outer shell (6) covers the first tube body and the second outer shell (7) covers the second tube body; the first outer shell (6) and the second outer shell (7) are provided with a clearance notch at the inner side of the rotation, and the slide (5) is arranged in the clearance notch; the first outer shell (6) and the slide (5), the slides (5) and the slides (5), and the slide (5) and the second outer shell (7) are at least partially overlapped.

2. The bendable suction pipe for cleaning equipment according to claim 1, characterized in that: Slide rails are provided between the first shell (6) and the slide (5), between the slides (5) and between the slides (5) and between the slides (5) and the second shell (7), and a limiting structure is provided.

3. The bendable suction pipe for cleaning equipment according to claim 2, characterized in that: At the rotating outer side of the rotating structure, the first shell (6) at least partially overlaps with the second shell (7) and is in sliding contact with the first shell (6). The first shell (6) is located on the outer side of the second shell (7), and an elastic member (8) is provided on the outer side of the first shell (6).

4. The bendable suction pipe for cleaning equipment according to claim 3, characterized in that: The internal structure includes a hinged air inlet pipe (9) and an air outlet pipe (10); A first opening is provided at a position where the air inlet pipe (9) contacts the air outlet pipe (10), and a second opening is provided at a position where the air outlet pipe (10) contacts the air inlet pipe (9); when the air inlet pipe (9) rotates relative to the air outlet pipe (10), a shape swept by the first opening is the same as a shape of the second opening.

5. The bendable suction pipe for cleaning equipment according to claim 4, characterized in that: The size of the first opening is smaller than or equal to the size of the air inlet of the air inlet pipe (9); at the hinge between the air inlet pipe (9) and the air outlet pipe (10), the outer side of the air inlet pipe (9) is at least a part of a rotating body with the hinge axis as the center line.

6. The bendable suction pipe for cleaning equipment according to claim 5, characterized in that: A spoon-shaped channel with the hinge axis as the center line is provided at the second opening; the spoon-shaped channel is in communication with the air outlet of the air outlet pipe (10).

7. The bendable suction pipe for cleaning equipment according to any one of claims 1 to 6, characterized in that: The rotating structure is provided with main cover plates (3) at both ends along the hinge axis; and a transparent cover plate (4) is provided in the center of the main cover plate (3).

8. The bendable suction pipe for cleaning equipment according to claim 7, characterized in that: The main cover plate (3) and the transparent cover plate (4) form a spherical cap-shaped structure.

9. The bendable suction pipe for cleaning equipment according to claim 8, characterized in that: A first connection portion (1) is provided at one end of the first tube body away from the rotating structure; and a second connection portion (2) is provided at one end of the second tube body away from the rotating structure.

Images