Modularized bristle cutting assembly for rolling brush and surface cleaning device

Abstract

The modular bristle cutting assembly comprises a movable blade (1) capable of axially reciprocating, the movable blade (1) is provided with first bristle cutting teeth (2), the modular bristle cutting assembly further comprises a shell forming a module (27), the shell is provided with an outer bristle cutting part (5), the movable blade (1) is movably installed in the shell, and the first bristle cutting teeth (2) are located on one side of the outer bristle cutting part (5) to achieve bristle cutting. The movable blade (1) is provided with a connecting part (6), the connecting part (6) retracts into or extends out of or is flush with the surface of the module (27), and the connecting part (6) is used for being connected with an external reciprocating driving structure (30); according to the utility model, the modular design degree is improved, so that large-scale production and manufacturing are facilitated; the invention further provides a surface cleaning device which adopts the modularized bristle cutting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of surface cleaning devices, in particular to a modular hair cutting component for a roller brush and a surface cleaning device. Background Art

[0002] The surface cleaning devices referred to in the present disclosure include, for example, vacuum cleaners, floor scrubbers, sweeping robots, and the like.

[0003] Vacuum cleaners are usually used to clean dry surfaces. Vacuum cleaners are equipped with floor brushes, which can be used to clean the floor conveniently and efficiently. The floor brush usually needs to be installed with a roller brush, which is mainly composed of a cleaning roller. The direction of the axis of the cleaning roller is generally arranged horizontally to the moving cleaning direction of the floor brush. The cleaning roller rotates around the axis, thereby efficiently cleaning the floor when the user pushes the floor brush forward or backward.

[0004] Similarly, floor scrubbers can also be equipped with floor brushes, but the floor scrubbers need to meet the technical requirements of being able to clean wet surfaces, and the waterproof design requirements for the floor brushes are higher.

[0005] For a sweeping robot, the roller brush is directly installed in the sweeping robot, with a portion of the roller brush exposed at the bottom of the sweeping robot. In this way, when the sweeping robot moves automatically for cleaning, the roller brush is used to clean the surface. Similarly, the sweeping robot can be designed to be used only for cleaning dry surfaces, or to be designed to be used for cleaning wet surfaces. In this way, the waterproof requirements for the roller brush are also different.

[0006] From the above, we can know the general structure, working principle and important role of the roller brush in the surface cleaning device. The roller brush will be worn, dirty and consumed, so the roller brush is a consumable and needs to be replaced regularly. In the prior art, in order to solve the problem of hair entangled in the roller brush, a hair cutting technology is proposed. There are roughly two technical routes for hair cutting technology. One is to set the hair cutting structure on the roller brush and replace it with the roller brush. The other is not to set the hair cutting structure on the roller brush and not to replace it with the roller brush. However, no matter which design is used, the current hair cutting structure is complex and diverse, and the degree of modular design is low, which is not conducive to large-scale production. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the defects of the prior art and propose a modular hair cutting component for a roller brush, which is conducive to improving the degree of modular design and thus facilitates large-scale production and manufacturing; a surface cleaning device is also proposed, which adopts the aforementioned modular hair cutting component.

[0008] Compared with the prior art, the utility model proposes a modular hair cutting assembly for a roller brush, comprising a movable blade capable of axial reciprocating motion, the movable blade being provided with a first hair cutting tooth, and also comprising a shell constituting the module, the shell being provided with an outer hair cutting portion, the movable blade being movably mounted in the shell, and the first hair cutting tooth being located on one side of the outer hair cutting portion to achieve hair cutting, the movable blade being provided with a connecting portion, the connecting portion being retracted or extended or being level with the module surface, the connecting portion being used to connect to an external reciprocating drive structure.

[0009] After adopting the above structure, compared with the prior art, the utility model has the following advantages:

[0010] Through the improvement, the present disclosure not only improves the degree of modular design, but also helps solve the following problems: when the technical route of setting the hair cutting structure on the roller brush is adopted, the hair cutting structure and the cleaning roller can be manufactured separately, and finally assembled to obtain the roller brush; when the technical route of not setting the hair cutting structure on the roller brush is adopted, the hair cutting structure can also be manufactured separately from other structures, and finally assembled to make the modular hair cutting component located in the circumferential direction of the outer periphery of the cleaning roller, so that the hair wrapped around the cleaning roller can be cut. Therefore, the present disclosure helps to improve the degree of modular design, and thus facilitates large-scale production and manufacturing.

[0011] In some embodiments, the shell includes a first cover plate and a second cover plate, and the first cover plate and the second cover plate are interconnected to form a module having an outer hair cutting portion. When the first cover plate and the second cover plate are connected to each other, an accommodating cavity is formed, and the accommodating cavity forms an axial narrow cutting slit in the outer hair cutting portion. The movable blade is movably accommodated in the accommodating cavity, and at least a portion of the first hair cutting tooth extends out of the cutting slit.

[0012] In some embodiments, the slit is configured as a narrow and long hole structure arranged along the axial direction.

[0013] In some embodiments, it also includes a plurality of positioning posts arranged in sequence along the axial direction. Accordingly, the movable blade is provided with guide holes that movably cooperate with the positioning posts. These positioning posts also play an axial guiding role for the movable blade. Before the first cover plate and the second cover plate are connected to each other, one end of the positioning post is connected to the first cover plate, and the other end of the positioning post is exposed. Through the other end of the positioning post, the movable blade is sleeved on these positioning posts through the guide holes. When the first cover plate and the second cover plate are connected to each other, the other end of the positioning post is connected to the second cover plate so that the positioning post is fixed between the first cover plate and the second cover plate. At the same time, the movable blade is limited between the first cover plate and the second cover plate.

[0014] In some embodiments, a bushing is further provided between the positioning post and the guide hole, and the bushing is used to protect the positioning post and guide the axial reciprocating motion of the movable blade.

[0015] In some embodiments, it also includes a fixed blade arranged along the axial direction, which is adjacent to or close to the movable blade. The fixed blade is provided with second hair cutting teeth. The movable blade reciprocates axially relative to the fixed blade to drive the first hair cutting teeth to reciprocate relative to the second hair cutting teeth to cut hair.

[0016] In some embodiments, a receiving cavity is formed when the first cover plate and the second cover plate are connected to each other, and the receiving cavity forms an axial narrow cutting slot at the outer cutting portion, and the movable blade is movably received in the receiving cavity, and at least a portion of the first cutting tooth extends out of the cutting slot, and a fixed blade is arranged at an edge of one side of the cutting slot or in the cutting slot. When the fixed blade is arranged in the cutting slot, the fixed blade is fixedly received in the receiving cavity, and at least a portion of the second cutting tooth extends out of the cutting slot.

[0017] In some embodiments, the cutting slit is configured as a narrow and long hole structure arranged along the axial direction, the axial length of the portion of the movable blade where the first cutting teeth are distributed is smaller than the axial length of the portion of the fixed blade where the second cutting teeth are distributed, and the difference in axial length between the two is greater than or equal to the axial reciprocating displacement of the movable blade.

[0018] In some embodiments, it also includes a plurality of positioning posts arranged in sequence along the axial direction. Accordingly, the movable blade is provided with a guide hole that movably cooperates with the positioning post, and the fixed blade is provided with a fixing hole that corresponds to the positioning post. These positioning posts simultaneously play an axial guiding role for the movable blade and a fixing role for the fixed blade. Before the first cover plate and the second cover plate are connected to each other, one end of the positioning post is connected to the first cover plate, and the other end of the positioning post is exposed. Through the other end of the positioning post, the fixed blade passes through the fixing hole, and the movable blade passes through the guide hole and is sequentially mounted on these positioning posts. When the first cover plate and the second cover plate are connected to each other, the other end of the positioning post is connected to the second cover plate so that the positioning post is fixed between the first cover plate and the second cover plate. At the same time, the movable blade is limited between the first cover plate and the second cover plate and can axially reciprocate, while the fixed blade is fixed between the first cover plate and the second cover plate.

[0019] In some embodiments, an elastic pressure strip is provided on a side of the fixed blade facing away from the movable blade, and the elastic pressure strip elastically presses the fixed blade toward the movable blade.

[0020] In some embodiments, the fixed blade is located on one side of the first cover plate, and the first cover plate is provided with a first receiving groove, and the first receiving groove is installed with an elastic pressure strip.

[0021] In some embodiments, a support strip is provided on the side of the movable blade facing away from the fixed blade, and the elastic pressure strip elastically presses the fixed blade and the movable blade together onto the support strip.

[0022] In some embodiments, the movable blade is located on one side of the second cover plate, and the second cover plate is provided with a second receiving groove, and the second receiving groove is installed with a support bar.

[0023] In some embodiments, an axially arranged open groove is provided on the side of the support bar away from the moving blade, and two axially arranged support protrusions are provided on the side of the support bar in contact with the moving blade, and an axial gap is formed between the two support protrusions, which corresponds to the position of the open groove. The open groove divides the back of the support bar into two parts, and an axially arranged mating protrusion is provided at the bottom of the second accommodating groove, which cooperates with the open groove to prevent the support bar from deflecting around the axial direction.

[0024] In some embodiments, the outer hair cutting portion is provided with a hair collecting groove extending along the axial direction, and the hair collecting groove is provided with hair inlet and outlet openings on both sides of the movable blade.

[0025] In some embodiments, a portion of the hair collection groove is located on the first cover plate, and another portion of the hair collection groove is located on the second cover plate. When the first cover plate and the second cover plate are connected to each other, they are spliced ​​to form a complete hair collection groove. At the same time, when the first cover plate and the second cover plate are connected to each other, a receiving cavity is formed. The receiving cavity forms an axial narrow slit in the hair collection groove area, and the movable blade is movably accommodated in the receiving cavity, and at least a portion of the first hair cutting tooth extends out of the slit.

[0026] In some embodiments, a comb-tooth portion is provided on one or both sides of the incision, and the comb-tooth portion is used to guide the hair to be located on the upper side of the incision.

[0027] In some embodiments, when comb teeth portions are provided on both sides, the comb teeth in the comb teeth portions are aligned with each other, and the receiving grooves formed between adjacent comb teeth are also aligned with each other.

[0028] In some embodiments, the axial width of the comb teeth of the comb tooth portion is set to allow the shadow of the first hair cutting tooth to be hidden on the side of the comb teeth facing the slit, so that the accommodating groove formed between adjacent comb teeth is not blocked by the first hair cutting tooth.

[0029] In some embodiments, when a fixed blade is accommodated in the slit, the second hair cutting teeth of the fixed blade are fixed on the side of the comb teeth facing the slit, and the axial width of the comb teeth of the comb tooth portion is set so that the second hair cutting teeth are hidden on the side of the comb teeth facing the slit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional schematic diagram of a modular hair-cutting assembly for a roller brush from an outside perspective.

[0031] Figure 2 for Figure 1 A three-dimensional schematic diagram showing the complete cutting seam after the fixed blade and the movable blade are removed.

[0032] Figure 3 A schematic three-dimensional diagram of an inner side view of a modular hair cutting assembly for a roller brush.

[0033] Figure 4 It is a three-dimensional schematic diagram of a modular hair cutting assembly for a roller brush after removing the second cover plate.

[0034] Figure 5 for Figure 4 Schematic diagram after removing the fixed bushing.

[0035] Figure 6 It is a three-dimensional schematic diagram of a modular hair cutting assembly for a roller brush after removing the first cover plate.

[0036] Figure 7 for Figure 6 Schematic diagram after removing the positioning column.

[0037] Figure 8 It is a three-dimensional schematic diagram of a moving blade.

[0038] Fig. 9 It is a three-dimensional schematic diagram of a fixed blade.

[0039] Fig.10 It is a three-dimensional schematic diagram of a first cover plate.

[0040] Fig.11 It is a three-dimensional schematic diagram of a second cover plate.

[0041] Fig.12 It is a three-dimensional schematic diagram of a support bar from the front view.

[0042] Fig.13 It is a three-dimensional schematic diagram of a support bar from the back side perspective.

[0043] Fig.14 The utility model is a three-dimensional schematic diagram of a hair-cutting roller brush.

[0044] Fig.15 It is a three-dimensional schematic diagram of an external reciprocating drive structure and a modular wool cutting component cooperating to realize reciprocating transmission.

[0045] Fig.16 The present invention is a three-dimensional schematic diagram showing that a modular hair cutting assembly is arranged on a floor brush cover and moves with a roller brush for cleaning.

[0046] Fig.17 A three-dimensional schematic diagram of arranging a modular wool cutting assembly on a base station.

[0047] Description of the accompanying drawings: 1-moving blade, 2-first hair cutting tooth, 3-first cover plate, 4-second cover plate, 5-outer hair cutting portion, 6-connecting portion, 7-accommodating cavity, 8-cutting slit, 9-positioning column, 10-guide hole, 11-bushing, 12-fixed blade, 13-second hair cutting tooth, 14-fixing hole, 15-elastic pressure strip, 16-first accommodating groove, 17-support bar, 18-second accommodating groove, 19-opening groove, 20-supporting protrusion, 2 1-axial spacing, 22-matching protrusion, 23-hair collecting groove, 24-comb tooth part, 25-comb tooth, 26-accommodating groove, 27-module, 28-screw, 29-screw hole, 30-reciprocating drive structure, 31-installation support part, 32-cleaning roller, 33-driving end, 34-floor brush cover, 35-roller brush, 36-base station, 37-hook, 38-friction reduction groove, 39-side, 40-insertion hole, 41-blank part. DETAILED DESCRIPTION

[0048] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0049] like Figures 1 to 17 The figure shows a modular hair cutting assembly for a roller brush, comprising a movable blade 1 capable of axial reciprocating movement, the movable blade 1 being provided with a first hair cutting tooth 2, and also comprising a shell constituting a module 27, the shell being provided with an outer hair cutting portion 5, the movable blade 1 being movably mounted in the shell, and the first hair cutting tooth 2 being located on one side of the outer hair cutting portion 5 to achieve hair cutting, the movable blade 1 being provided with a connecting portion 6, the connecting portion 6 being retracted or extended or being level with the surface of the module 27, the connecting portion 6 being used to connect to an external reciprocating drive structure 30.

[0050] In this example, the housing includes a first cover plate 3 and a second cover plate 4 , and the first cover plate 3 and the second cover plate 4 are connected to each other to form a module 27 having an outer cut-out portion 5 .

[0051] Of course, the shell may also be other structures, for example, the shell may be made into an integral type, and an accommodating chamber 7 may be provided in the integral shell, the accommodating chamber 7 may movably accommodate the movable blade 1, or the shell may be divided into two or more parts in the transverse direction, and these parts may be axially spliced ​​into a complete shell, or the shell may be divided into two or more parts in the radial direction extending in the axial direction, and these parts may be radially spliced ​​into a complete shell, thereby realizing the movable accommodation and installation of the movable blade 1.

[0052] In some embodiments, Fig.14As shown, a modular hair cutting assembly for a roller brush disclosed in the present invention can be installed in a cleaning roller 32 of a roller brush 35 of a surface cleaning device, that is, the module 27 is installed in the cleaning roller 32, and the module 27 rotates with the cleaning roller 32, as shown in FIG. Fig.15 As shown, a reciprocating drive structure 30 is provided in the cleaning roller 32, and the reciprocating drive structure 30 is exemplified as an annular guide groove, which is fixed on one side of the mounting support portion 31 of the roller brush 35, supported and fixed by the mounting support portion 31, and the connecting portion 6 is guided and matched with the annular guide groove.

[0053] For the convenience of installation, preferably, the connecting portion 6 is arranged to extend out of the surface of the module 27 so as to facilitate the guiding cooperation with the annular guide groove.

[0054] In order to securely fix the module 27 in the cleaning roller 32, as shown in FIG. Figure 1 , 2 As shown in FIGS. 14 and 15 , the module 27 is provided with a screw hole 29 , and the module 27 is reliably fixed in the cleaning roller 32 by means of the screw 28 and the screw hole 29 .

[0055] The cleaning roller 32 has two ends, one end is rotatably connected to the mounting support part 31, and the other end serves as a driving end 33 for connecting to a driving part. The driving part is arranged in a surface cleaning device, such as a floor brush, a dust suction port of a sweeping robot, etc. As the driving part rotates, the driving part will drive the cleaning roller 32 to rotate around the mounting support part 31. Then, when the module 27 rotates with the cleaning roller 32, the movable blade 1 can be driven axially reciprocatingly due to the axial reciprocating guide of the annular guide groove.

[0056] The reciprocating drive structure 30 may also be other structures, such as an electric motor, a gear transmission, an electric telescopic rod, etc. Any suitable reciprocating drive structure 30 may be adopted and will not be described in detail here.

[0057] In some embodiments, Fig.16 As shown, the module 27 can be installed on the floor brush cover 34 of the floor brush of the surface cleaning device and move with the floor brush. The floor brush is equipped with a roller brush 35. The module 27 is circumferentially arranged around the outer periphery of the roller brush 35, and the outer hair cutting portion 5 is adjacent to or close to the outer peripheral surface of the roller brush 35. In this way, when replacing the roller brush 35, there is no need to remove the module 27 at the same time. In addition, when the floor brush drives the roller brush 35 to move for cleaning, it is also cutting hair at the same time.

[0058] In some embodiments, Fig.17As shown, the module 27 can be installed on a base station 36 of a surface cleaning device, such as a base station 36 of a vacuum cleaner, a base station 36 of a floor scrubber, or a base station 36 of a sweeping robot. When the surface cleaning device equipped with the roller brush 35 returns to the base station 36, the module 27 is circumferentially arranged around the outer periphery of the roller brush 35, and the outer dehairing portion 5 is adjacent to or in contact with the outer peripheral surface of the roller brush 35. In this way, dehairing can be performed on the base station 36. In addition, when replacing the roller brush 35, there is no need to remove the module 27 at the same time.

[0059] In some embodiments, Figure 1 , 2 As shown, when the first cover plate 3 and the second cover plate 4 are connected to each other, a receiving cavity 7 is formed, and the receiving cavity 7 forms an axially narrow and long cutting slot 8 at the outer hair cutting portion 5, and the movable blade 1 is movably received in the receiving cavity 7, and at least a part of the first hair cutting tooth 2 extends out of the cutting slot 8. In this way, it is not only convenient to manufacture, but also hair is not easy to enter the cutting slot 8.

[0060] In order to facilitate production and manufacturing, a snap-fit ​​structure is used when the first cover plate 3 and the second cover plate 4 are connected to each other so that the first cover plate 3 and the second cover plate 4 are connected without being separated from each other. The snap-fit ​​structure includes a hook 37, which can be arranged on the first cover plate 3 or the second cover plate 4.

[0061] In some embodiments, Figure 1 , 8 As shown in FIG. 9 , the invention further comprises a fixed blade 12 arranged in the axial direction, the fixed blade 12 is arranged adjacent to or close to the movable blade 1, the fixed blade 12 is provided with a second hair cutting tooth 13, the movable blade 1 reciprocates in the axial direction relative to the fixed blade 12 to drive the first hair cutting tooth 2 to reciprocate and cut hair relative to the second hair cutting tooth 13. With such an arrangement, a higher hair cutting efficiency is achieved.

[0062] In some embodiments, Figure 1 , 2 As shown, when the first cover plate 3 and the second cover plate 4 are connected to each other, a receiving cavity 7 is formed, and the receiving cavity 7 forms an axial narrow cutting slit 8 at the outer hair cutting portion 5, the movable blade 1 is movably received in the receiving cavity 7, and at least a part of the first hair cutting tooth 2 extends out of the cutting slit 8, and a fixed blade 12 is arranged in the cutting slit 8, and the fixed blade 12 is fixedly received in the receiving cavity 7, and at least a part of the second hair cutting tooth 13 extends out of the cutting slit 8.

[0063] The setting of the fixed blade 12 can also be other structures. For example, the fixed blade 12 is set at the edge of one side of the cutting slit 8. The specific structure, for example, the second hair cutting teeth 13 can be installed as an insert on the side of the first cover plate 3 adjacent to the cutting slit 8, or the second hair cutting teeth 13 can be integrally formed when the first cover plate 3 is formed. That is to say, the fixed blade 12 and the first cover plate 3 are made into an integral part.

[0064] In some embodiments, Figure 1 , 2 As shown, the slit 8 is set as a narrow and long hole structure set in the axial direction, and the axial length of the part of the movable blade 1 where the first hair cutting teeth 2 are distributed is less than the axial length of the part of the fixed blade 12 where the second hair cutting teeth 13 are distributed, and the difference in the axial lengths of the two is greater than or equal to the axial reciprocating displacement of the movable blade 1. After such a design, on the one hand, it is beneficial to make the parts of the first cover plate 3 and the second cover plate 4 located at the axial ends of the slit 8 as short as possible, without considering making them high to provide accommodation space when the movable blade 1 moves. According to the above-mentioned improvement, the first hair cutting teeth 2 do not need to enter the parts of the first cover plate 3 and the second cover plate 4 located at the axial ends of the slit 8. On the other hand, it is ensured that the movable blade 1 will not touch the axial ends of the slit 8 during rapid reciprocating motion. On the other hand, the blank part 41 of the movable blade 1 where the first hair cutting teeth 2 are not provided can enter the bottom side of the slit 8 to fill the bottom of the slit 8 to prevent hair from entering the accommodation cavity 7 from the slit 8.

[0065] In some embodiments, Figure 4 As shown, it also includes a plurality of positioning posts 9 arranged in sequence along the axial direction. Accordingly, the movable blade 1 is provided with a guide hole 10 that movably cooperates with the positioning posts 9. These positioning posts 9 also play an axial guiding role for the movable blade 1. Before the first cover plate 3 and the second cover plate 4 are connected to each other, one end of the positioning post 9 is connected to the first cover plate 3, and the other end of the positioning post 9 is exposed. Through the other end of the positioning post 9, the movable blade 1 is sleeved on these positioning posts 9 through the guide hole 10. When the first cover plate 3 and the second cover plate 4 are connected to each other, the other end of the positioning post 9 is connected to the second cover plate 4 so that the positioning post 9 is fixed between the first cover plate 3 and the second cover plate 4. At the same time, the movable blade 1 is limited between the first cover plate 3 and the second cover plate 4. In this way, not only the installation problem of the movable blade 1 is solved, which is conducive to the convenience of production and manufacturing, but also the guiding problem of the movable blade 1 is solved.

[0066] Further, such as Figure 4 , 5 As shown, a bushing 11 is further provided between the positioning column 9 and the guide hole 10 , and the bushing 11 is used to protect the positioning column 9 , and at the same time, the bushing 11 is used to guide the axial reciprocating motion of the movable blade 1 .

[0067] In some embodiments, Figure 1 As shown, it also includes a fixed blade 12 arranged in the axial direction, the fixed blade 12 is adjacent to or close to the movable blade 1, and the fixed blade 12 is provided with a second hair cutting tooth 13. The movable blade 1 reciprocates in the axial direction relative to the fixed blade 12 to drive the first hair cutting tooth 2 to reciprocate relative to the second hair cutting tooth 13 to cut hair. In order to better solve the production and manufacturing problems, such as Figures 4 to 11As shown, it also includes a plurality of positioning posts 9 arranged in sequence along the axial direction. Correspondingly, the movable blade 1 is provided with a guide hole 10 that is movably matched with the positioning post 9, and the fixed blade 12 is provided with a fixing hole 14 that corresponds to the positioning post 9. These positioning posts 9 simultaneously play an axial guiding role for the movable blade 1 and a fixing role for the fixed blade 12; before the first cover plate 3 and the second cover plate 4 are connected to each other, one end of the positioning post 9 is connected to the first cover plate 3, and the other end of the positioning post 9 is exposed. Through the other end of the positioning post 9, the fixed blade 12 passes through the fixing hole 14, and the movable blade 1 passes through the guide hole 10 and is sequentially sleeved on these positioning posts 9. When the first cover plate 3 and the second cover plate 4 are connected to each other, the other end of the positioning post 9 is connected to the second cover plate 4 so that the positioning post 9 is fixed between the first cover plate 3 and the second cover plate 4. At the same time, the movable blade 1 is limited between the first cover plate 3 and the second cover plate 4 and can axially reciprocate, while the fixed blade 12 is fixed between the first cover plate 3 and the second cover plate 4.

[0068] With this design, the installation problem of the fixed blade 12 and the movable blade 1 is solved at the same time, which greatly improves the convenience of production and manufacturing.

[0069] In some embodiments, Fig.10 , 11 As shown, both the first cover plate 3 and the second cover plate 4 are provided with insertion holes 40 for installing the positioning columns 9, so as to facilitate production and manufacturing.

[0070] In some embodiments, Figure 6 As shown, an elastic strip 15 is provided on the side of the fixed blade 12 facing away from the movable blade 1, and the elastic strip 15 elastically presses the fixed blade 12 toward the side of the movable blade 1. In this way, the fixed blade 12 is closely attached to the movable blade 1, and a better hair cutting effect is achieved.

[0071] like Figure 8 As shown, in order to reduce friction, the movable blade 1 is further provided with a friction reducing groove 38. In this example, the friction reducing groove 38 is provided in two sections arranged in sequence along the axial direction.

[0072] Further, such as Fig.10 As shown, the fixed blade 12 is located at one side of the first cover plate 3, and the first cover plate 3 is provided with a first receiving groove 16, and the first receiving groove 16 is installed with the elastic pressure strip 15. In this way, it is not only convenient to manufacture, but also the elastic pressure strip 15 is well installed.

[0073] Further, such as Figure 5 As shown, a support strip 17 is provided on the side of the movable blade 1 facing away from the fixed blade 12, and the elastic pressure strip 15 elastically presses the fixed blade 12 and the movable blade 1 together on the support strip 17. The support strip 17 is preferably made of wear-resistant material, so as to provide good support for the blade set composed of the fixed blade 12 and the movable blade 1 on the one hand, and reduce wear and improve reliability on the other hand.

[0074] Further, such as Fig.11 As shown, the movable blade 1 is located at one side of the second cover plate 4, and the second cover plate 4 is provided with a second receiving groove 18, and the second receiving groove 18 is installed with the support strip 17. In this way, it is not only convenient to manufacture, but also the elastic pressure strip 15 is well installed.

[0075] Further, such as Fig.11 , 12 As shown in Figures 13, an axially arranged open groove 19 is provided on the side of the support strip 17 away from the movable blade 1, and two axially arranged support protrusions 20 are provided on the side of the support strip 17 that is in contact with the movable blade 1. An axial interval 21 is formed between the two support protrusions 20, and the axial interval 21 corresponds to the position of the open groove 19. The open groove 19 divides the back of the support strip 17 into two parts. An axially arranged matching protrusion 22 is provided at the bottom of the second accommodating groove 18, and the matching protrusion 22 matches with the open groove 19 to prevent the support strip 17 from deflecting around the axial direction. In this way, the open groove 19 is not only conducive to reducing the contact friction, but also enables the two support protrusions 20 to still provide a good supporting effect.

[0076] In this example, if Fig.11 As shown, the matching protrusion 22 is configured to be segmented in the axial direction.

[0077] In some embodiments, Figure 1 , 2 As shown in FIG. 14 , the outer hair cutting portion 5 is provided with a hair collecting groove 23 extending in the axial direction, and the hair collecting groove 23 is provided with hair inlet and outlet openings on both sides of the movable blade 1. This is conducive to collecting hair, thereby cutting hair more efficiently.

[0078] In order to facilitate production, Figure 1 , 2 As shown in FIGS. 10 and 11 , a part of the hair collecting groove 23 is located on the first cover plate 3, and another part of the hair collecting groove 23 is located on the second cover plate 4. When the first cover plate 3 and the second cover plate 4 are connected to each other, a complete hair collecting groove 23 is formed by splicing. At the same time, when the first cover plate 3 and the second cover plate 4 are connected to each other, a receiving cavity 7 is formed. The receiving cavity 7 forms an axial narrow and long cutting slit 8 in the area of ​​the hair collecting groove 23. The movable blade 1 is movably accommodated in the receiving cavity 7, and at least a part of the first hair cutting tooth 2 extends out of the cutting slit 8.

[0079] In some embodiments, Figure 1 , 2 As shown, a comb tooth portion 24 is provided on one or both sides of the slit 8, and the comb tooth portion 24 is used to guide the hair to be located on the upper side of the slit 8. This is conducive to more efficient hair cutting.

[0080] like Figure 1 , 2As shown, when comb teeth 24 are provided on both sides, the comb teeth 25 in the comb teeth 24 are aligned with each other, and the receiving grooves 26 formed between adjacent comb teeth 25 are also aligned with each other. In this way, hair can be more easily entered into the receiving grooves 26 for cutting.

[0081] In some embodiments, Figure 1 , 10 As shown, the axial width of the comb teeth 25 of the comb tooth portion 24 is set so that the first hair cutting teeth 2 are hidden at the side 39 of the comb teeth 25 facing the slit 8, so that the receiving grooves 26 formed between adjacent comb teeth 25 are not blocked by the first hair cutting teeth 2. Therefore, hair has a chance to enter the receiving grooves 26, and efficient cutting is achieved.

[0082] like Figure 1 , 11 As shown, when the fixed blade 12 is accommodated in the slit 8, the second hair cutting teeth 13 of the fixed blade 12 are fixed to the side 39 of the comb teeth 25 facing the slit 8, and the axial width of the comb teeth 25 of the comb tooth portion 24 is set so that the second hair cutting teeth 13 can be hidden in the side 39 of the comb teeth 25 facing the slit 8. In this way, the accommodating groove 26 is not blocked by the second hair cutting teeth 13.

[0083] When understanding the present disclosure, if necessary, the above structure can refer to other embodiments / appendices. Figure 1 And understand, no further elaboration here.

[0084] The above description is only an illustrative embodiment of the present invention, so any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent protection scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. A modular hair-cutting assembly for a roller brush, comprising a movable blade (1) capable of axial reciprocating motion, the movable blade (1) being provided with a first hair-cutting tooth (2), characterized in that: The invention also comprises a shell constituting the module (27), the shell being provided with an outer hair cutting portion (5), the movable blade (1) being movably mounted in the shell, and the first hair cutting tooth (2) being located on one side of the outer hair cutting portion (5) to achieve hair cutting, the movable blade (1) being provided with a connecting portion (6), the connecting portion (6) being retracted or extended or being level with the surface of the module (27), and the connecting portion (6) being used to connect with an external reciprocating drive structure (30).

2. The modular hair cutting assembly for a roller brush according to claim 1, characterized in that: The shell comprises a first cover plate (3) and a second cover plate (4), wherein the first cover plate (3) and the second cover plate (4) are connected to each other to form a module (27) having an outer hair cutting portion (5), and when the first cover plate (3) and the second cover plate (4) are connected to each other, an accommodating cavity (7) is formed, wherein the accommodating cavity (7) forms an axially long and narrow cutting slit (8) in the outer hair cutting portion (5), the movable blade (1) is movably accommodated in the accommodating cavity (7), and at least a part of the first hair cutting tooth (2) protrudes outside the cutting slit (8).

3. The modular hair cutting assembly for a roller brush according to claim 2, characterized in that: The slit (8) is configured as a narrow and long hole structure arranged along the axial direction.

4. The modular hair cutting assembly for a roller brush according to claim 1, characterized in that: The invention also comprises a plurality of positioning posts (9) arranged in sequence along the axial direction. Accordingly, the movable blade (1) is provided with a guide hole (10) movably matched with the positioning post (9). The positioning posts (9) also play an axial guiding role for the movable blade (1). Before the first cover plate (3) and the second cover plate (4) are connected to each other, one end of the positioning post (9) is connected to the first cover plate (3), and the other end of the positioning post (9) is exposed. Through the other end of the positioning post (9), the movable blade (1) is sleeved on the positioning posts (9) through the guide hole (10). When the first cover plate (3) and the second cover plate (4) are connected to each other, the other end of the positioning post (9) is connected to the second cover plate (4) so ​​that the positioning post (9) is fixed between the first cover plate (3) and the second cover plate (4). At the same time, the movable blade (1) is limited between the first cover plate (3) and the second cover plate (4).

5. The modular hair cutting assembly for a roller brush according to claim 4, characterized in that: A bushing (11) is also provided between the positioning column (9) and the guide hole (10). The bushing (11) is used to protect the positioning column (9) and is also used to guide the axial reciprocating motion of the movable blade (1).

6. The modular hair cutting assembly for a roller brush according to claim 1, characterized in that: The invention also comprises a fixed blade (12) arranged in the axial direction, the fixed blade (12) being adjacent to or close to the movable blade (1), the fixed blade (12) being provided with a second hair cutting tooth (13), and the movable blade (1) being reciprocated in the axial direction relative to the fixed blade (12) to drive the first hair cutting tooth (2) to reciprocate relative to the second hair cutting tooth (13) to perform hair cutting.

7. The modular hair cutting assembly for a roller brush according to claim 6, characterized in that: When the first cover plate (3) and the second cover plate (4) are connected to each other, an accommodating chamber (7) is formed. The accommodating chamber (7) forms an axially narrow and long cutting slit (8) at the outer hair cutting portion (5). The movable blade (1) is movably accommodated in the accommodating chamber (7). At least a portion of the first hair cutting tooth (2) protrudes out of the cutting slit (8). A fixed blade (12) is arranged at an edge of one side of the cutting slit (8) or in the cutting slit (8). When the fixed blade (12) is arranged in the cutting slit (8), the fixed blade (12) is fixedly accommodated in the accommodating chamber (7), and at least a portion of the second hair cutting tooth (13) protrudes out of the cutting slit (8).

8. The modular hair cutting assembly for a roller brush according to claim 7, characterized in that: The cutting slit (8) is arranged as a narrow and long hole structure arranged along the axial direction, the axial length of the portion of the movable blade (1) where the first hair cutting teeth (2) are distributed is smaller than the axial length of the portion of the fixed blade (12) where the second hair cutting teeth (13) are distributed, and the difference in the axial lengths between the two is greater than or equal to the axial reciprocating displacement of the movable blade (1).

9. The modular hair cutting assembly for a roller brush according to claim 6, characterized in that: The blade (1) further comprises a plurality of positioning posts (9) arranged in sequence along the axial direction. Accordingly, the movable blade (1) is provided with a guide hole (10) movably matched with the positioning post (9), and the fixed blade (12) is provided with a fixing hole (14) correspondingly matched with the positioning post (9). The positioning posts (9) simultaneously play an axial guiding role for the movable blade (1) and a fixing role for the fixed blade (12); before the first cover plate (3) and the second cover plate (4) are connected to each other, one end of the positioning post (9) is connected to the first cover plate (3), and the other end of the positioning post (9) is exposed, and the other end of the positioning post (9) is connected to the first cover plate (3). The fixed blade (12) is sequentially mounted on the positioning posts (9) through the fixing hole (14) and the movable blade (1) is sequentially mounted on the positioning posts (9) through the guide hole (10). When the first cover plate (3) and the second cover plate (4) are connected to each other, the other end of the positioning post (9) is connected to the second cover plate (4) so ​​that the positioning post (9) is fixed between the first cover plate (3) and the second cover plate (4). At the same time, the movable blade (1) is limited between the first cover plate (3) and the second cover plate (4) and can axially reciprocate, while the fixed blade (12) is fixed between the first cover plate (3) and the second cover plate (4).

10. The modular hair cutting assembly for a roller brush according to claim 6, characterized in that: An elastic pressure strip (15) is provided on the side of the fixed blade (12) facing away from the movable blade (1), and the elastic pressure strip (15) elastically presses the fixed blade (12) toward the side of the movable blade (1).

11. The modular hair cutting assembly for a roller brush according to claim 10, characterized in that: The fixed blade (12) is located on one side of the first cover plate (3). The first cover plate (3) is provided with a first receiving groove (16), and the first receiving groove (16) is installed with an elastic pressure strip (15).

12. The modular hair cutting assembly for a roller brush according to claim 10, characterized in that: A support strip (17) is provided on the side of the movable blade (1) facing away from the fixed blade (12), and the elastic pressure strip (15) elastically presses the fixed blade (12) and the movable blade (1) together onto the support strip (17).

13. The modular hair cutting assembly for a roller brush according to claim 12, characterized in that: The movable blade (1) is located on one side of the second cover plate (4); the second cover plate (4) is provided with a second accommodating groove (18), and the second accommodating groove (18) is installed with a supporting bar (17).

14. The modular hair cutting assembly for a roller brush according to claim 13, characterized in that: An axially arranged opening groove (19) is provided on the side of the support strip (17) away from the movable blade (1), and two axially arranged supporting protrusions (20) are provided on the side of the support strip (17) in contact with the movable blade (1). An axial interval (21) is formed between the two supporting protrusions (20), and the axial interval (21) corresponds to the position of the opening groove (19). The opening groove (19) divides the back of the support strip (17) into two parts. An axially arranged matching protrusion (22) is provided at the bottom of the second accommodating groove (18), and the matching protrusion (22) matches with the opening groove (19) to prevent the support strip (17) from deflecting around the axial direction.

15. The modular hair cutting assembly for a roller brush according to claim 1, characterized in that: The outer hair cutting portion (5) is provided with a hair collecting groove (23) extending along the axial direction, and the hair collecting groove (23) is provided with hair inlet and outlet openings on both sides of the movable blade (1).

16. The modular hair cutting assembly for a roller brush according to claim 15, characterized in that: A portion of the hair collection groove (23) is located on the first cover plate (3), and another portion of the hair collection groove (23) is located on the second cover plate (4). When the first cover plate (3) and the second cover plate (4) are connected to each other, a complete hair collection groove (23) is formed by splicing. At the same time, when the first cover plate (3) and the second cover plate (4) are connected to each other, a receiving cavity (7) is formed. The receiving cavity (7) forms an axially long and narrow cutting slit (8) in the area of ​​the hair collection groove (23). The movable blade (1) is movably received in the receiving cavity (7), and at least a portion of the first hair cutting tooth (2) protrudes out of the cutting slit (8).

17. The modular hair cutting assembly for a roller brush according to claim 2, 7 or 16, characterized in that: A comb tooth portion (24) is provided on one or both sides of the cutting slit (8), and the comb tooth portion (24) is used to guide the hair to be located on the upper side of the cutting slit (8).

18. The modular hair cutting assembly for a roller brush according to claim 17, characterized in that: When comb teeth (24) are provided on both sides, the comb teeth (25) in the comb teeth (24) are arranged in alignment with each other, and the receiving grooves (26) formed between adjacent comb teeth (25) are also arranged in alignment with each other.

19. The modular hair cutting assembly for a roller brush according to claim 17, characterized in that: The axial width of the comb teeth (25) of the comb tooth portion (24) is set so that the first hair cutting teeth (2) are hidden at the side surface (39) of the comb teeth (25) facing the cutting slit (8), so that the receiving groove (26) formed between adjacent comb teeth (25) is not blocked by the first hair cutting teeth (2).

20. The modular hair cutting assembly for a roller brush according to claim 19, characterized in that: When the fixed blade (12) is accommodated in the cutting slit (8), the second hair cutting teeth (13) of the fixed blade (12) are fixed to the side (39) of the comb teeth (25) facing the cutting slit (8), and the axial width of the comb teeth (25) of the comb tooth portion (24) is set so that the second hair cutting teeth (13) are hidden in the side (39) of the comb teeth (25) facing the cutting slit (8).

21. A surface cleaning device comprising a roller brush (35), characterized in that: It also includes a modular hair cutting assembly for a roller brush as described in any one of claims 1 to 20, wherein the modular (27) hair cutting assembly is installed in the roller brush (35), and the outer hair cutting portion (5) is located on the outer peripheral surface of the roller brush (35), and / or the modular (27) hair cutting assembly is circumferentially arranged around the outer periphery of the roller brush (35), and the outer hair cutting portion (5) is adjacent to or in contact with the outer peripheral surface of the roller brush (35).

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