Floor brush

Abstract

The present invention discloses a floor brush, a longitudinal floor brush hood and a blade mounted on the inner side of the floor brush hood along the longitudinal direction, the floor brush at least comprising two connecting parts connecting the longitudinal ends of the blade, the floor brush hood comprising at least one receiving part arranged from its inner wall toward the blade, in the longitudinal direction, the receiving part is arranged between the two connecting parts, the receiving part comprises a receiving space, and the blade is at least partially received in the receiving space. According to a floor brush of the present invention, by arranging the receiving part on the inner wall of the floor brush hood near the blade, the blade can only be deformed within the range limited by the receiving space of the receiving part during the hair cutting process, and will not be excessively bent and deformed to fail due to hair entanglement or other reasons.

Description

Technical Field

[0001] The invention relates to a floor brush for a cleaning appliance, in particular to a floor brush for a vacuum cleaner. Background Art

[0002] At present, in the field of vacuum cleaners, when the vacuum cleaner is working, the roller brush in the vacuum cleaner is rotating, and a lot of hair or wool fibers will be entangled on the bristles of the roller brush on the cleaning surface. There are currently two ways to remove the hair fibers on the bristles: one way is to manually remove the roller brush and clean the hair fibers on the roller brush; the other way is to set a hair cutting device on the floor brush without disassembling the roller brush, so that the blades in the hair cutting device are in contact with the bristles distributed around the roller brush. When the roller brush drives the bristles to rotate continuously, the blades in the hair cutting device can quickly cut off the hair fibers entangled on the bristles.

[0003] After adding a hair cutting device to the vacuum cleaner, it can be operated with one button, and the hair entangled on the bristles of the roller brush can be quickly and conveniently cleaned without removing the roller brush. However, the length of the blade in the hair cutting device is usually the same as the length of the roller brush, and it is an independent working element. Except that the two ends of the blade are fixed on the inner wall of the floor brush air cover, the working area of ​​the blade is suspended in the floor brush air cover. In the process of cutting hair, the blade will be deformed and displaced due to the pulling of the roller brush bristles and hair fibers. Once irreversible plastic deformation occurs, the blade will completely fail and have a serious impact on the normal use of the floor brush.

[0004] In the prior art, for example, Chinese patent CN205514380U, the technical solution of this Chinese patent is to increase the length of the blade and extend it in a curve in the length direction of the blade, so that the blade is not easy to shake and deform during the friction between the blade and the roller brush, thereby improving the cutting efficiency. However, the above technical solution will inevitably increase the manufacturing cost. Summary of the invention

[0005] An object of the present invention is to provide a floor brush assembly having a device for preventing blade deformation.

[0006] To achieve one of the above-mentioned objects of the invention, one embodiment of the present invention provides a floor brush, comprising a longitudinal floor brush hood and a blade mounted on the inner side of the floor brush hood along the longitudinal direction, characterized in that: the floor brush comprises at least two connecting parts connecting the longitudinal ends of the blade, the floor brush hood comprises at least one receiving part arranged from its inner wall toward the blade, and in the longitudinal direction, the receiving part is arranged between the two connecting parts, the receiving part comprises a receiving space, and the blade is at least partially received in the receiving space.

[0007] As a further improvement of one embodiment of the present invention, the accommodating portion includes a first supporting portion protruding from the inner wall of the floor brush hood, the first supporting portion and the inner wall of the floor brush hood form the accommodating space, and the blade is at least partially accommodated in the accommodating space.

[0008] As a further improvement of one embodiment of the present invention, the accommodating portion includes a first supporting portion and a second supporting portion respectively protruding from the inner wall of the floor brush hood, the first supporting portion and the second supporting portion are relatively arranged to form the accommodating space, and the blade is at least partially accommodated in the accommodating space.

[0009] As a further improvement of one embodiment of the present invention, the blade is rotatably arranged on the inner side of the floor brush hood, the floor brush includes a brush roller rotatably accommodated in the floor brush hood, the blade includes a first state and a second state before and after being rotated, in the first state, a gap is left between the blade and the brush roller, in the second state, the blade is inclined toward the brush roller and the minimum distance between the blade and the rotation axis of the brush roller is less than the roller diameter of the brush roller.

[0010] As a further improvement of an embodiment of the present invention, when the brush roller rotates, the blade in the second state at least partially abuts against the receiving portion.

[0011] As a further improvement of an embodiment of the present invention, the accommodating portion includes at least one first supporting portion protruding from the inner wall of the floor brush hood, and in the first state, the gap between the blade and the first supporting portion is matched, and the width of the gap is not greater than 3 mm.

[0012] As a further improvement of an embodiment of the present invention, in the longitudinal direction, the distance from the receiving portion to any one of the connecting portions is not less than 1 / 4 of the distance between the two connecting portions.

[0013] As a further improvement of an embodiment of the present invention, in the longitudinal direction, the receiving portion is arranged in the middle position of the two connecting portions.

[0014] As a further improvement of one embodiment of the present invention, the blade body of the blade can be configured to have a straight plate-shaped, L-shaped, arc-shaped, or p-shaped structure along a cross section perpendicular to the longitudinal direction.

[0015] Compared with the prior art, the present invention has the beneficial effect that the blade can only be deformed within the limited range of the support portion, and this deformation range is far lower than the elastic deformation of the blade material, which will not cause the blade to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the three-dimensional structure of a floor brush assembly according to an embodiment of the present invention;

[0017] Figure 2 is a schematic front view of a brush assembly according to an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0019] Figure 4 yes Figure 3 Enlarged schematic diagram of area A in the middle (the blade is in the first working position);

[0020] Figure 5 yes Figure 3 Enlarged schematic diagram of area A in the middle (the blade is in the second working position);

[0021] Figure 6 It is a three-dimensional structural diagram of the position relationship between the floor brush assembly and the blade in one embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the interior of the brush hood with the blade removed;

[0023] Figure 8 yes Figure 7 The enlarged schematic diagram at C in the middle;

[0024] Fig. 9 It is a schematic diagram of the deformation of the blade in the floor brush;

[0025] Fig.10 is a partially enlarged schematic diagram of the movable space between the blade and the receiving portion in the second working state;

[0026] Fig.11 is a partially enlarged schematic diagram of the movable space between the blade and the receiving portion in the second working state;

[0027] Fig.12 It is a partially enlarged schematic diagram of the movable space between the blade and the receiving portion when the blade is in the second working state. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0029] See also Figure 1 Figure 6 , Figure 7 and Fig.12As shown, in one embodiment of the present invention, a floor brush includes a floor brush 20, a hair cutting device button 21 and a floor brush wind cover 11, and the two ends of the floor brush wind cover 11 are respectively provided with a first fixing hole 111 and a second fixing hole 112, and the two ends of the blade 13 are movably arranged in the first fixing hole 111 and the second fixing hole 112, and the blade 13 can be arranged in a straight line or in a straight line. Figure 6 The root of the L-shaped Fig.12 The root of the brush is arc-shaped, and a receiving portion is provided on the inner wall 110 of the brush cover 11. Figure 7 The support portion 9 forms a receiving portion, and the receiving portion forms a receiving space for receiving the blade body portion of the blade 13. The support portion 9 can be set to an arc shape or a plate rib structure or a convex point, which is used to support the root of the blade, and the support portion 9 is preferably set in the middle part of the inner wall of the floor brush wind cover 11.

[0030] Further, see Figure 7-Figure 10 The support portion 9 includes a first stopper 91 and a second stopper 92, which form a stopper groove 90. The blade 13 includes a blade root 131, which is built into the stopper groove 90. A movable gap is provided between the blade 13 and the support portion 9. The first stopper 91 is located at the front side of the blade 13, and the second stopper 92 is located at the rear side of the blade 13. The first stopper 91 limits the blade from bending excessively in the direction away from the roller brush, and the second stopper 92 is used to limit the blade from bending excessively in the direction toward the roller brush. The structure of the first stopper 91 and the second stopper 92 can be a plate rib structure or a convex point structure or other structures that can play a supporting role. The support part 9 can also be composed of the first stopper 91 and the second stopper 92 and a connecting part (not shown in the figure) connecting the first stopper 91 and the second stopper 92. In this case, the first stopper 91 and the second stopper 92 and the connecting part (not shown in the figure) form a receiving space for receiving the blade root 131 to play a supporting role. The support part 9 can be a separate part or can be integrally formed with the floor brush wind cover 11.

[0031] See also Fig.11 The limiter 91 of the support part 9 and the inner wall of the floor brush wind cover 11 together form a receiving groove, and the blade body of the blade is built into the receiving groove. The limiter 91 is used to limit the excessive bending of the blade away from the roller brush, and the inner wall of the floor brush wind cover 11 limits the excessive bending of the blade toward the roller brush.

[0032] See also Fig.12When the blade body is an arc-shaped structure, the receiving groove formed by the support portion 9 is also configured to be an arc-shaped structure to match the shape of the blade body, so as to limit the blade from excessive bending in any direction within the arc range. The support portion 9 can also be configured to have other shapes as long as it can match the shape of the blade body.

[0033] See also Figure 4 and Figure 6 As shown, when the blade 13 is in the first working position (the working state between the blade 13 and the second hair implantation group 16), the blade 13 only touches the second hair implantation group 16 of the roller brush assembly 12, and does not touch the first hair implantation group 15. Since the wire diameter of the second hair implantation group 16 is the thinnest, the blade 13 lightly touches the second hair implantation group 16 to cut part of the hair and prevent more hair from being entangled on the roller brush assembly 12, and the soft and dense second hair implantation group 16 does not produce a large resistance to the blade 13, and the blade 13 is basically not bent or deformed.

[0034] See also Figure 5 , Figure 6 and Fig. 9 As shown, when the blade 13 is in the second working position (the blade 13 is tilted and in the working state between the first hair implantation group 15 and the second hair implantation group 16), the blade 13 simultaneously extends into the first hair implantation group 15 and the second hair implantation group 16, so that the blade 13 extends into and cuts the inside of the roller brush hair implantation, so as to effectively cut the hair supported on the first hair implantation group 15 and the second hair implantation group 16, and automatic secondary fine hair cutting can be achieved without disassembling the machine, thereby improving the hair cutting efficiency. When the blade 13 is in the second working position, the blade is bent due to hair entanglement or the installation problem of the blade itself or an unexpected situation. When the blade 13 occurs as follows Fig. 9 When the blade 13 is bent in the first bending direction, the bending deformation of the blade 13 is large. In the long-term working state, serious bending deformation will occur. At this time, the second stopper 92 of the support part 9 plays a limiting role on the middle part of the blade body of the blade 13 to prevent the blade 13 from bending excessively. When the blade 13 is deformed in the second bending direction, the first stopper 91 of the support part 9 also plays a limiting role on the middle part of the blade body of the blade 13 to prevent the blade 13 from being seriously bent.

[0035] Furthermore, according to the length and deformation of the blade 13, the position of the support part 9 on the inner wall of the floor brush hood 11 can be one, or multiple uniform layouts; or at least one first limiter can be set separately on one side of the blade, or at least one second limiter can be set separately on the other side of the blade; or multiple first limiters and one second limiter are used in combination, or one first limiter and multiple second limiters are used in combination; or the first limiter and the second limiter can be symmetrically arranged, or they can be staggered. When the support part is a limiter, the bending deformation of the blade in one direction can be prevented; when the support part is a combination of the first limiter and the first limiter, the deformation of the blade in two directions can be prevented; when the support part is a circular arc structure, the deformation of the blade in any direction can be prevented. The position of the support part 9 in the floor brush hood is preferably in the area of ​​one quarter to three quarters along the longitudinal direction of the blade, preferably in the middle position. In addition, the shape of the blade body can be L-shaped, or straight plate-shaped, or circular arc-shaped, or ρ-shaped.

[0036] Compared with the prior art, when the hair cutting device of the present invention is activated by a brush, the blade 13 rotates. Since the blade 13 is relatively long, it is easy to bend and deform due to the pulling and entanglement of hair during the installation process of the blade 13 or the action of the blade 13 and the roller brush assembly. Therefore, a support part 9 is provided at the root of the blade 13, so that even if the blade 13 itself is deformed or deformed by the pulling and entanglement of hair during use, it can only deform within the limited range of the support part 9. This deformation range is far lower than the elastic deformation of the blade material, and will not cause the blade to fail.

[0037] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0038] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A floor brush, comprising a longitudinal floor brush hood and a blade mounted on the inner side of the floor brush hood along the longitudinal direction, characterized in that: The floor brush at least comprises two connecting parts connecting the two longitudinal ends of the blade, the floor brush wind cover comprises at least one receiving part arranged from the inner wall thereof toward the blade, in the longitudinal direction, the receiving part is arranged between the two connecting parts, the receiving part comprises a receiving space, the blade is at least partially received in the receiving space, and a movable gap is arranged between the blade and the receiving part; The floor brush comprises a brush roller rotatably accommodated in the floor brush wind cover; The receiving portion includes at least one stopper protruding from the inner wall of the floor brush hood, and the stopper is used to limit the excessive bending of the blade away from the brush roller or toward the brush roller; The blade is rotatably arranged inside the floor brush hood, and the blade includes a first state and a second state before and after being rotated. In the first state, a gap is left between the blade and the brush roller, and in the second state, the blade is inclined toward the brush roller and the minimum distance between the blade and the rotation axis of the brush roller is less than the roller diameter of the brush roller. When the brush roller rotates, the blade in the second state at least partially abuts against the receiving portion.

2. The floor brush according to claim 1, characterized in that: The receiving portion includes a first stopper protruding from the inner wall of the floor brush hood, the first stopper and the inner wall of the floor brush hood forming the receiving space, and the blade is at least partially received in the receiving space; Wherein, the first limiting member is used to limit the excessive bending of the blade in the direction away from the brush roller, and the inner wall of the floor brush air cover is used to limit the excessive bending of the blade in the direction toward the brush roller.

3. The floor brush according to claim 1, characterized in that: The receiving portion includes a first stopper and a second stopper respectively protruding from the inner wall of the floor brush hood, the first stopper and the second stopper are arranged opposite to each other to form the receiving space, and the blade is at least partially received in the receiving space; Wherein, the first limiting member is used to limit the excessive bending of the blade in the direction away from the brush roller, and the second limiting member is used to limit the excessive bending of the blade in the direction toward the brush roller.

4. The floor brush according to claim 1, characterized in that: The accommodating portion includes a first limiting member and a second limiting member which are respectively protruded relative to the inner wall of the floor brush hood, and a connecting portion connecting the first and second limiting members. The first limiting member, the second limiting member and the connecting portion cooperate to form the accommodating space, and the blade is at least partially accommodated in the accommodating space.

5. The floor brush according to any one of claims 1 to 4, characterized in that: The receiving portion includes at least one first limiting member protruding from the inner wall of the floor brush hood. In the first state, the blade and the first limiting member are gap-matched, and the width of the gap is no more than 3 mm.

6. The floor brush according to any one of claims 1 to 4, characterized in that: In the longitudinal direction, the distance from the receiving portion to any connecting portion is not less than 1 / 4 of the distance between the two connecting portions.

7. The floor brush according to claim 6, characterized in that: In the longitudinal direction, the receiving portion is arranged at a middle position between the two connecting portions.

8. The floor brush according to claim 1, characterized in that: The blade body of the blade is arranged in a straight plate shape, an L shape, an arc shape or a p shape along a cross section perpendicular to the longitudinal direction.

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