WO2020011260A1 - 一种磁吸式电动剃须刀 - Google Patents

一种磁吸式电动剃须刀 Download PDF

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Publication number
WO2020011260A1
WO2020011260A1 PCT/CN2019/095860 CN2019095860W WO2020011260A1 WO 2020011260 A1 WO2020011260 A1 WO 2020011260A1 CN 2019095860 W CN2019095860 W CN 2019095860W WO 2020011260 A1 WO2020011260 A1 WO 2020011260A1
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WO
WIPO (PCT)
Prior art keywords
magnet
magnetic
type electric
electric shaver
main body
Prior art date
Application number
PCT/CN2019/095860
Other languages
English (en)
French (fr)
Inventor
祝永锋
叶志文
Original Assignee
焕醒科技(杭州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201821116297.8U external-priority patent/CN208714051U/zh
Priority claimed from CN201810772574.9A external-priority patent/CN108687804A/zh
Priority claimed from CN201821116646.6U external-priority patent/CN208614838U/zh
Application filed by 焕醒科技(杭州)有限公司 filed Critical 焕醒科技(杭州)有限公司
Publication of WO2020011260A1 publication Critical patent/WO2020011260A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

Definitions

  • the invention relates to the technical field of daily necessities, in particular to a magnetic suction electric shaver.
  • An electric shaver generally includes a main body component and a cutter head component connected to the main body component.
  • the main body component generally includes a main body, a driving unit, a battery, and a charging port.
  • the blade head component generally includes a knife net, a moving knife unit, a housing, and a transmission shaft.
  • the drive unit includes a motor, a gear unit, and a drive shaft. The motor, the gear unit, the drive shaft, and the drive shaft work together to drive the movable knife unit to rotate.
  • Most of the existing cutter head components and main body components are connected through a mechanical connection structure, such as a button + buckle type active connection structure; or an interference fit snap connection structure.
  • connection structure has many problems during the actual use of the user, such as the release button is too tight due to injection and assembly errors, the user feels very uncomfortable, and some even cannot remove the head cover; in addition, the button structure needs to be closed.
  • the gap of the movable buckle may cause water or scum to enter the body gradually, causing damage to the internal components of the main assembly; and the number of parts of the button + buckle type of active connection structure More, the cost of the mold is higher, the assembly process is complicated.
  • the structure with interference buckle fits, because of injection assembly and molding tolerances, it is easy to cause the buckle to be too loose, and the head cover cannot be hung, and the head cover is easy to fall; or the buckle is too tight, in the process of multiple insertion and removal , The snap-fit parts are severely worn or ruptured due to excessive force, and the connection and use performance of the head cover and the main body component are poor.
  • the prior patent also discloses a structure in which the cutter head assembly and the main body assembly are magnetically attracted by the magnet time, but the exposed magnets, on the one hand, will cause the surface of the magnet to be scratched during the repeated disassembly of the cutter head assembly, and on the other hand, foreign objects are easy Entering the magnet and plastic parts, especially for the three-shaft rotary shaver, the cutter head assembly contains complex transmission components. When washing with water, water will not easily flow out after entering the cutter head assembly, which will cause displacement and shortening in the long run. Shaver life.
  • the invention discloses a magnetic suction electric shaver. By improving the driving mode of the electric shaver, it provides a shaver that is easy to seal, waterproof, has small vibration, low noise, has an overload protection function, and has reliable transmission.
  • a magnetic suction type electric shaver includes a main body component and a cutter head component.
  • the cutter head component is provided on the main body component.
  • the main body component includes a main body and a driving unit provided in the main body.
  • the cutter head component includes a movable blade.
  • a unit, a housing for supporting a movable knife unit, the cutter head assembly further includes a transmission unit that transmits power, the drive unit transmits power to the transmission unit, and realizes the movable knife unit through the action of the drive unit and the transmission unit Rotate; the housing and / or the body is fixedly equipped with a magnet to magnetically fit the cutter head component and the main body component, and the magnet is hermetically arranged in the housing and / or the body.
  • This solution includes at least three solutions, that is, a magnet is installed in the housing, or a magnet is fixedly installed in the body, or a magnet is fixedly installed in the housing and the body, and adjusted according to actual needs.
  • one of the housing and the body is provided with a magnet, and the other is a magnetic material body that cooperates with the magnet.
  • the advantage is that the cost of the magnetic material body can be used to reduce the cost and the complexity of the structure can be reduced without affecting the magnetic attraction effect.
  • both the housing and the body are provided with magnets.
  • This solution gives the assembly method of the magnet, which is convenient for assembly.
  • the housing has a connecting portion connected to the main body component, the connecting portion is provided with a receiving cavity for receiving the magnet, the cutter head component further includes a bottom cover, and the bottom cover and the connecting portion connect the magnet by ultrasonic welding.
  • the seal is disposed in the receiving cavity.
  • the cutter head assembly contains a complex transmission unit. In order to reduce the power loss in the transmission process, the transmission unit is generally coated with lubricant. After ultrasonic welding, there is no gap between the bottom cover and the surface of the receiving cavity.
  • the bottom cover has a first groove, and the magnet is disposed in the first groove.
  • the magnet is fixedly assembled in the first groove to improve the assembly reliability of the magnet, prevent the magnet from being displaced when the shaver is dropped, and affect the cooperation between the cutter head component and the main body component.
  • the body further includes an end cover, the end cover has a second groove, the magnet is disposed in the second groove, and the end cover is ultrasonically welded to the body.
  • the sealing is more reliable, so that the host can be washed, and the magnet is fixedly assembled in the second groove to prevent the magnet from falling out when the host component is dropped, which affects the use.
  • the driving unit includes a motor and a driving shaft
  • the transmission unit includes a driving shaft
  • transmission is achieved through hard contact between the driving shaft and the driving shaft.
  • the bottom cover has a first through hole
  • the drive shaft projects into the first through hole
  • the magnet is disposed around the drive shaft.
  • the suction force of the cutter head component and the main body component is evenly distributed to ensure the stability of the shaver during the work process.
  • the magnet is a common magnet or a multi-pole magnetized magnet.
  • the installation structure of the magnet is simplified, and a small installation space is required, so that the shaver is miniaturized.
  • the magnet is a whole magnet.
  • the shape of the magnet is ring, circle or square. Ring, round or square shapes are easy to process.
  • the cutter head component and the main body component are connected through an anti-rotation structure.
  • the position of the magnetic matching of the cutter head component and the main body component is prevented from shifting, and the working reliability is increased.
  • the upper end of the body is recessed to form a cavity, and the connection portion at least partially projects into the cavity.
  • the magnetic attraction of the cutter head assembly and the main body assembly is reliable, and the transmission is reliable.
  • the cutter head assembly is located at a set position without displacement.
  • a boss is provided on the upper end of the body, and the boss projects at least partially into the connecting portion. The transmission reliability is ensured, so that the cutter head assembly does not shift during the operation of the shaver.
  • connection part and the body are connected by an anti-rotation structure.
  • the transmission reliability is further ensured, and the cutter head assembly is prevented from being displaced during the transmission process, thereby reducing the transmission effect or even failure.
  • Connected can be a direct connection or an indirect connection.
  • a first magnet connected to the transmission unit is sealed in the housing
  • a second magnet connected to the driving unit is sealed in the body
  • the moving knife unit is in the driving unit, the second magnet, the first magnet, and Driven by the transmission unit.
  • the magnetic transmission is realized by the first magnet and the second magnet that realize the magnetic attraction structure, without the need to extend the drive shaft and the drive shaft of the housing and the body, which can be completely sealed, and the waterproof effect is good;
  • the seal is converted into a static seal, which realizes zero-leakage transmission of power and enables the rotating knife unit to rotate reliably. It can avoid vibration transmission and achieve smooth operation of the machine, reduce the vibration and pulling feeling felt by the user during the shaving process, and improve the user.
  • the first magnet and the second magnet there is no rigid connection between the first magnet and the second magnet, and it has an overload protection function.
  • the first magnet and the second magnet will slip and move the knife
  • the unit stops moving, thereby protecting the user from being torn and causing no direct damage to the transmission structure; the first magnet and the second magnet are completely sealed in the housing and the body, respectively, so that the surface of the housing and the body can be achieved Smooth, simple structure and convenient maintenance; simplified structure through multi-pole magnetized magnets, miniaturizing the shaver, and obtaining a larger magnetic field in a smaller space. Better and reduces power loss.
  • the distance between the first magnet and the second magnet is L, 0.5 mm ⁇ L ⁇ 10 mm. Ensure that the cutter head component and the main body component can be magnetically matched.
  • L is greater than 10mm, in order to achieve the magnetic engagement and magnetic drive of the cutter head component and the main body component, a larger volume of magnet is required, otherwise the magnetic force adsorption effect and magnetic force driving effect will not Well, a larger volume of magnet will cause the machine to be larger and heavier, making it inconvenient to use and carry.
  • the distance of 0.5 mm is the thickness of the sealing material. If the distance is less than 0.5 mm, the effect of the sealing material is not good, and the sealing cannot be performed well.
  • the first magnet is a driven magnet
  • the second magnet is a driving magnet. Since the second magnet is connected to the driving unit, the driving unit is turned as a source of energy transmission. A driving magnet is selected. Since the first magnet and the second magnet are attracted to each other, the second magnet (active magnet) rotates to drive the first magnet (slave magnet). ) Turn.
  • the distance D between the active magnet and the upper end surface of the body is not greater than 10 mm.
  • the distance from the active magnet to the upper end surface of the body includes the wall thickness of the body.
  • a first magnet fixing frame for fixing the driven magnet and a bearing for rotating the driven magnet are also provided in the connecting portion, and the bearing is in contact with the outer wall of the first magnet fixing frame.
  • the driven magnet is rotated by the bearing, the structure is simple, and the power transmission loss is small.
  • a second magnet fixing frame is provided in the body, the active magnet is disposed in the second magnet fixing frame, and the second magnet fixing frame is connected to the driving shaft of the driving unit. Realize the reliable transmission of the active magnet and the motor, increase the reliability of the connection between the active magnet and the drive shaft, and extend the service life of the shaver.
  • the opposing surfaces of the driving magnet and the driven magnet respectively include at least two partitions, and two adjacent partitions on the same surface have different magnetic properties.
  • the opposing surfaces of the driving magnet and the driven magnet respectively include at least two partitions, and two adjacent partitions on the same surface have different magnetic properties.
  • the structure of the driving magnet and the driven magnet is similar.
  • the surface of the driving magnet and the driven magnet is provided with at least two partitions and the same surface.
  • the two adjacent partitions have different magnetic properties, that is, the N and S poles are arranged adjacently; if there are 3 partitions, they can be N, S, N, or S, N, and S poles;
  • the driven magnet works by the magnetic permeability of the driving magnet
  • the magnets corresponding to the longitudinal direction of the driven magnet are in a state of opposite-phase attraction, that is, the driving magnet
  • the driven magnet zone in the longitudinal direction corresponds to the S pole
  • the active magnet zone corresponds to the S pole
  • the driven magnet zone in the longitudinal direction corresponds to the N pole.
  • both the driving magnet and the driven magnet are multi-pole magnetized magnets.
  • the driving magnet and the driven magnet are respectively a whole magnet, and the number of poles of the driving magnet and the driven magnet is the same.
  • FIG. 1 is a schematic structural diagram of an electric shaver according to Embodiment 1 provided by the present utility model.
  • FIG. 2 is a schematic structural diagram of a cutter head assembly according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of a main assembly according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural diagram of another main body component according to Embodiment 3 of the present invention.
  • FIG. 5 is a schematic structural diagram of an electric shaver according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic structural diagram of still another main component according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic structural diagram of the entire electric shaver according to Embodiment 4 of the present invention.
  • FIG. 8 is a schematic diagram of a cutter head assembly of the electric shaver according to Embodiment 4 of the present invention.
  • FIG. 9 is a sectional view of A in FIG. 7.
  • FIG. 10 is a schematic diagram of a multi-pole magnetized magnet according to Embodiment 7 of the present invention.
  • FIG. 11 is an assembly diagram between two types of magnets according to Embodiment 7 of the present invention.
  • Main body assembly 101; body; 102; drive unit; 1021; motor; 1022; drive shaft; 103; second magnet; 104; end cover; 105; cavity; 106; second magnet fixing frame; Head assembly; 201, housing; 202, connecting part; 203, first magnet; 204, bottom cover; 205, transmission shaft; 206, first magnet fixing frame; 207, bearing; 2071, bearing inner wall; 2072, ball; 2073, bearing outer wall; 3, boss; 4, convex; 5, groove.
  • a magnetic suction type electric shaver includes a main body component and a cutter head component.
  • the cutter head component is provided on the main body component.
  • the main body component includes a main body and a driving unit provided in the main body.
  • the cutter head component includes a movable blade.
  • a unit, a housing for supporting a movable knife unit, the cutter head assembly further includes a transmission unit that transmits power, the drive unit transmits power to the transmission unit, and realizes the movable knife unit through the action of the drive unit and the transmission unit Rotate; the housing and / or the body is fixedly equipped with a magnet to magnetically fit the cutter head component and the main body component, and the magnet is hermetically arranged in the housing and / or the body.
  • This solution includes at least three solutions, that is, a magnet is installed in the housing, or a magnet is fixedly installed in the body, or a magnet is fixedly installed in the housing and the body, and adjusted according to actual needs.
  • One of the housing and the body is provided with a magnet, and the other is a magnetic material body that cooperates with the magnet.
  • the advantage is that the cost of the magnetic material body can be used to reduce the cost and the complexity of the structure can be reduced without affecting the magnetic attraction effect.
  • one of the housing and the body uses a magnet, and the other is made of a magnetic material piece that can be magnetically attracted by the magnet; or, one of the housing and the body is provided with a magnet, and the other is provided with a magnet that is magnetically attracted to the magnet.
  • one of the housing and the body is provided with a magnet, and the other one has a combination of the above examples.
  • a magnet is provided in the casing for detailed description.
  • the body 101 may be made of a metal material (for example, iron, cobalt, nickel, or an alloy thereof), or a part cooperating with the magnet is made of metal; when a magnet is provided in the body 101, The housing 201 is made of metal, or the part of the housing 201 that is attracted to the magnet is made of metal.
  • a magnetic suction electric shaver includes a main body assembly 1, a cutter head assembly 2, and the cutter head assembly 2 is provided on the main body assembly 1.
  • the main body assembly 1 includes a main body 101 and a main body 101.
  • the driving unit 102 includes a moving head unit, a housing 201 for supporting the moving head unit, and a transmission unit for transmitting power.
  • the driving unit 102 includes a motor 1021 and a driving shaft 1022.
  • a first magnet 203 is fixedly mounted in the casing 201 to magnetically fit the cutter head assembly 2 and the main body assembly 1, and the first magnet 203 is sealedly disposed in the casing 201.
  • the transmission unit further includes a first gear assembly
  • the moving knife unit has three, and the three moving knife units can be driven to rotate at the same time through the action of the driving unit 102 and the transmission unit;
  • the driving unit 102 may further include a second gear assembly.
  • the transmission unit includes a transmission shaft 205, and transmission is achieved through hard contact between the transmission shaft 205 and the driving shaft 1022. This structure has low cost and realizes real-time transmission of power.
  • the housing 201 has a connection portion 202 connected to the main body assembly 1.
  • the connection portion 202 is provided with a receiving cavity for receiving the magnet.
  • the cutter head assembly 2 further includes a bottom cover 204.
  • the bottom cover 204 and the connecting portion 202 can be combined and matched through a sealing ring and a buckle structure at the same time, and the magnetic seal is set in the receiving cavity.
  • the advantage is that the tool head assembly 2 can be easily disassembled and repaired.
  • the bottom cover 204 and the connecting portion can also be used.
  • the magnet is sealed and arranged in the containing cavity by ultrasonic welding. After ultrasonic welding, there is no gap between the bottom cover 204 and the surface of the containing cavity. When washing with water, water will not enter the cutter head assembly 2 due to the setting of the magnet, which will prolong shaving. The service life of the knife is simpler and the assembly is easier;
  • the bottom cover 204 has a first groove, and the first magnet 203 is disposed in the first groove.
  • the first magnet 203 is fixedly assembled in the first groove to improve the assembly reliability of the magnet, prevent the magnet from being displaced when the shaver is dropped, and affect the cooperation between the cutter head assembly 2 and the main body assembly 1.
  • the first magnet 203 is annular and the first groove is an annular groove; or the first magnet 203 has a plurality of corresponding first grooves, and the first magnet 203 has a plurality of first concaves.
  • the groove is an annular groove.
  • the first magnet 203 and the first groove can be fixedly assembled with the bottom cover 204 by a tight fit or injection molding.
  • the motor 501 includes a power line 21 electrically connected to the circuit board 19 of the control appliance, and a conductive layer 18.
  • the circuit board 19 of the control appliance In the working state, the circuit board 19, the conductive layer 18, The power lines form a closed loop circuit.
  • the power supply line 21 is connected to the circuit board 19 and the connection terminal 22 via a conducting wire 20.
  • the electromagnetic radiation signal generated by the motor at work, the conductive layer absorbs the electromagnetic radiation generated by the motor during work, so that the electromagnetic radiation of the motor is transmitted to the corresponding terminals on the circuit board, thereby reducing the electromagnetic radiation generated by the motor during use.
  • the electromagnetic radiation of the motor mainly comes from the power line.
  • This structure allows the main radiation source to be shielded and reduces the electromagnetic radiation.
  • it has almost no effect on the volume of the motor, so that the motor will not be affected by the setting of the conductive layer. It occupies the inner space of the hair dryer; in addition, it is easy to realize the process of wrapping the power cord.
  • the conductive layer 18 receives electromagnetic radiation signals from the motor 501 in a non-contact form.
  • the conductive layer is more freely arranged in use and improves structural adaptability.
  • the conductive layer 18 is wrapped at least outside the power line 21, or the conductive layer is wrapped around the entire motor.
  • the conductive layer 18 wraps all the components of the motor, and can further absorb the electromagnetic radiation generated by other parts of the motor, and further reduce the electromagnetic radiation.
  • the conductive layer 18 may be one of a conductive coating, an aluminum foil, and a metal piece.
  • the cost of the above materials is low, and the effect of reducing electromagnetic radiation is easily achieved.
  • the body further includes an end cover, the end cover 104 has a second groove, the magnet is disposed in the second groove, and the end cover 104 and the body 101 are ultrasonically welded.
  • the sealing is more reliable, so that the host can be washed, and the magnet is fixedly assembled in the second groove to prevent the magnet from falling out when the host component is dropped, which affects the use.
  • the second magnet 103 is used as the magnet in this solution.
  • the main body assembly 1 further includes an end cover 104 having a second groove, a second magnet 103 is disposed in the second groove, and the end cover 104 and the body 101 are ultrasonically welded.
  • the advantage is that the sealing is more reliable, the host can be washed with water, and the second magnet 103 is fixedly assembled in the second groove to prevent the second magnet 103 from falling out when the host component is dropped, which affects the use.
  • the end cover 104 has a second through hole, the drive shaft 1022 extends out of the second through hole, and the second magnet 103 is disposed around the drive shaft 1022.
  • the suction force of the cutter head assembly 2 and the main body assembly 1 is evenly distributed, thereby ensuring the stability of the shaver in the working process.
  • the second magnet 103 is annular and the second groove is an annular groove; or the second magnet 103 has a plurality of corresponding second grooves, and the second magnet 103 has a plurality of second concaves.
  • the groove is an annular groove.
  • the second magnet 103 and the second groove can also be fixedly assembled with the bottom cover 204 by a tight fit or injection molding method.
  • both the housing and the body are provided with magnets, that is, the solutions of Embodiment 1 and Embodiment 2 are provided at the same time.
  • the housing 201 has a connecting portion 202 connected to the main body, and a concave cavity 105 is provided above the body 101, and the connecting portion 202 and the concave cavity 105 cooperate through an anti-rotation structure.
  • the anti-rotation structure is a turn-fitting structure of the connecting portion 202 and the side wall of the cavity 105; or a connecting structure of the connecting portion 202 with the protrusions 4 and grooves 5 on the side wall of the cavity 105; or the connecting portion 202 and The protrusions 4 and the grooves 5 on the bottom wall of the cavity 105 cooperate with each other.
  • the housing 201 has a connection portion 202 connected to the main body, and a protrusion 3 accommodating the connection portion 202 is provided above the body 101, and the connection portion 202 and the protrusion 3 cooperate with each other through an anti-rotation structure.
  • the anti-rotation structure is a turn-fitting structure of the connecting portion 202 and the boss 3; or a connecting structure of the connecting portion 202 and the protrusion 4 and the groove 5 of the side wall of the boss 3.
  • the housing 201 has a connecting portion 202 connected to the main body, and a concave cavity 105 and a boss 3 accommodating the connecting portion 202 are provided above the body 101, and the connecting portion 202 and the boss 3 pass through an anti-rotation structure. Cooperate.
  • the anti-rotation structure is a turn-fitting structure of the connecting portion 202 and the side wall of the cavity 105; or a turn-fitting structure of the connecting portion 202 and the side wall of the boss 3;
  • the setting positions of the protrusions 4 and the grooves 5 described in the above examples are interchangeable. It can be understood that the protrusion 4 or the groove 5 may be provided on the bottom cover 204.
  • Recesses 105 and / or bosses 3 are arranged at intervals above the body 101, and the anti-rotation structure may be the corresponding protrusions 3 and / or recesses 105 are provided at intervals on the connecting portion 202, so as to prevent the cutter head assembly 2 and the main body assembly 1 The pull-in shift.
  • the side wall of the cavity 105 is provided with the above-mentioned first groove, and the connecting portion 202 is provided with a first protrusion that cooperates with the first groove; or, the side wall of the cavity 105 is provided with There is a second protrusion, and the connecting portion 202 is provided with the above-mentioned second groove or notch that cooperates with the second protrusion; or the bottom wall of the cavity 105 is provided with a third protrusion or third groove, The end of the connecting portion 202 is provided with a fourth groove or a fourth protrusion that cooperates therewith; or, the anti-rotation structure is a soft rubber sleeve, which makes the connecting portion 202 and the cavity 105 interference fit, when the driving unit When 102 is working, the cutter head assembly 2 and the main body assembly 1 are relatively stationary.
  • first groove and the second groove or the notch are provided with a magnet, there is still a gap in the first groove and the second groove or the notch.
  • the first protrusion and the second protrusion matched with it are added. As a result, not only the assembly of the magnets but also the rotation prevention at the connection portion 202 is achieved.
  • the magnets are ordinary magnets or multi-pole magnets.
  • the installation structure of the magnet is simplified, and a small installation space is required, so that the shaver is miniaturized.
  • the magnet is a whole magnet.
  • the shape of the magnet is ring, circle or square; adopting the shape of ring, circle or square is convenient for processing.
  • the magnets in the housing 201 and the magnets in the body 101 are one of the above structures. In order to achieve matching, the structures of the two magnets in the housing 201 and the body 101 are similar or the same. Due to the similar or identical structure, the magnetic attraction is strong and the installation is tight.
  • Embodiment 1 or Embodiment 2 or Embodiment 3 lies in the driving mode.
  • the transmission modes of Embodiment 1, Embodiment 2 and Embodiment 3 are all contact transmission.
  • the transmission mode in this embodiment For non-contact transmission.
  • magnets are provided in both the housing 201 and the body 101. More specifically, the housing 201 is provided with a first magnet 203 connected to the transmission unit, the body 101 is provided with a second magnet 103 connected to the drive shaft 1022, and the movable knife unit is provided in the drive unit 102, The second magnet 103, the first magnet 203, and the transmission unit drive and rotate.
  • the magnetic transmission is realized by the first magnet 203 and the second magnet 103 which realize the magnetic attraction structure, and the transmission shaft and the driving shaft 1022 of the housing 201 and the body 101 do not need to be extended, which can be completely sealed and have a good waterproof effect;
  • the dynamic seal of the shaft transmitting power is converted into a static seal, which realizes zero leakage transmission of power and enables the rotating knife unit to rotate reliably. It can avoid vibration transmission and achieve smooth operation of the machine, reducing the vibration and vibration experienced by the user's face during shaving. Pulling feeling improves user experience; there is no rigid connection between the first magnet 203 and the second magnet 103, and it has an overload protection function.
  • the first magnet 203 and The second magnet 103 When there are more long beards acting on the cutter head component and exceeding the rated load, the first magnet 203 and The second magnet 103 will slip, and the movable knife unit stops moving, thereby protecting the user from being torn and causing no direct damage to the transmission structure; the first magnet 203 and the second magnet 103 are completely sealed in the housing and the body, respectively. , Can make the surface of the housing and the body smooth, simple structure, easy maintenance; simplified structure by multi-pole magnetizing magnets, miniaturizing the shaver, smaller Space to obtain a large magnetic field, magnetic better and reduces power loss.
  • the first magnet 203 is a driven magnet
  • the second magnet 103 is a driving magnet. Because the second magnet 103 is connected to the driving unit, and the driving unit rotates as a source of energy transmission, an active magnet is selected. Since the first magnet 203 and the second magnet 103 are attracted to each other, the second magnet 103 (ie, the active magnet) rotates to drive the first magnet. A magnet 203 (ie, a driven magnet) rotates.
  • the driving magnet ie, the second magnet 103, which is hereinafter referred to as the driving magnet
  • the driven magnet ie, the first magnet 203, which is hereinafter referred to as the first magnet 203
  • Magnet in this embodiment, specific installation forms of the driving magnet and the driven magnet are described.
  • a first magnet fixing frame 206 (that is, a first groove on the bottom cover 204) for fixing the driven magnet is also provided in the connecting portion 202, and
  • the bearing 207 includes a bearing inner wall 2071, a ball 2072, and a bearing outer wall 2073 in order from the inside to the outside.
  • the bearing inner wall 2071 is in contact with the outer wall of the first magnet holder 206.
  • the advantage is that the first magnet 203 is rotated through the bearing, the structure is simple, and the power transmission loss is small.
  • the bearing outer wall 2073 and the inner wall of the connecting portion 202 are closely matched. There are balls 2072 between the bearing inner wall 2071 and the bearing outer wall 2073.
  • the bearing inner wall 2071 is rotatable and the bearing outer wall 2073 is fixed.
  • the first magnet 203 and the first magnet fixing frame 206 are closely matched.
  • the first magnet fixing frame 206 and the bearing inner wall 2071 are closely matched.
  • the bearing inner wall 2071 rotates, the first magnet fixing frame 206 is rotated, thereby realizing the rotation of the first magnet 203.
  • the main body 101 is provided with a second magnet fixing frame 106 (ie, a second groove at the end cover 104).
  • the second magnet 103 is provided in the second magnet fixing frame 106.
  • the second magnet fixing frame 106 and the driving unit 102 The drive shaft 1022 is connected.
  • the reliable transmission of the active magnet and the motor 1021 is achieved, the reliability of the connection between the active magnet and the drive shaft 1022 is increased, and the service life of the shaver is extended.
  • the dimensional relationship between the driving magnet (ie, the second magnet 103) and the driven magnet (ie, the first magnet 203) is as follows.
  • the distance between the driving magnet and the driven magnet is L not more than 10 mm, for example, L is 0.5 mm, 1 mm, 1.5 mm, and 2 mm. , 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm.
  • L is 0.5 mm, 1 mm, 1.5 mm, and 2 mm.
  • the volume of the electric shaver is reasonable.
  • L is greater than 10mm, in order to achieve the magnetic fit and magnetic drive of the cutter head assembly 2 and the main body assembly 1, a larger volume of magnet is required, otherwise the magnetic adsorption effect and the magnetic drive effect are not good, and the larger volume magnet will cause the machine The whole machine is large and heavy, and it is inconvenient to use and carry.
  • L may be 0 mm; when the driving magnet and the driven magnet are respectively sealed and arranged in the body 101 and the housing 201, L is 10 mm at the maximum.
  • L 1.2 mm.
  • the distance D between the active magnet and the upper end surface of the body 101 is not greater than 10 mm, and may be 0.05 mm, 0.6 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, and 10 mm. In this example, 0.6 mm is preferable.
  • the distance between the active magnet and the upper end surface of the body 101 can be 0 mm; when the active magnet is completely inside the body 101, the distance from the active magnet to the upper end surface of the body 101 includes the wall thickness of the body 101.
  • the first magnet fixing frame 206 and the bottom cover 204 provided thereon improve the assembly reliability of the magnets, prevent the magnets from being displaced when the shaver is dropped, and affect the cooperation between the cutter head assembly 2 and the main body assembly 1.
  • both the driving magnet and the driven magnet are ordinary magnets; as shown in FIG. 10, when the driving magnet is an ordinary magnet, there are a plurality of ordinary magnets, and the number is even, and even number of ordinary magnets are formed in the driven magnet.
  • the mating surface of the magnet has South and North poles, and preferably 4 ordinary magnets form a plane with the South and North poles spaced apart.
  • the ordinary magnets have 6, 8 and so on; when the driven magnets are ordinary magnets, they are the same as the active magnets.
  • the setting method for ordinary magnets is the same as that of active magnets.
  • one of the driving magnet and the driven magnet is an ordinary magnet, and the other is a multi-pole magnetizing magnet.
  • the driving magnet is an ordinary magnet and the driven magnet is a multi-pole magnetizing magnet
  • the number of ordinary magnets and Multipole magnets have the same number of poles.
  • both the driving magnet and the driven magnet are multi-pole magnetizing magnets, which simplifies the installation structure of the magnets, requires a small installation space, and miniaturizes the shaver.
  • the driving magnet and the driven magnet are respectively a whole magnet, and the number of poles of the driving magnet and the driven magnet is the same.
  • the “number of poles” mentioned in the above examples refers to the total number of south and north poles on the same surface of the magnet.
  • the active magnet may be in the shape of a ring, a circle, a square, or the like.
  • the active magnet is a ring.
  • the driven magnet may have a ring shape, a circular shape, a square shape, or the like, and the driven magnet is preferably a ring shape.
  • the first magnet and the second magnet are both multi-pole magnetized magnets (as shown in FIG. 10 and FIG. 11).
  • Multi-pole magnetized magnets refer to partitions having at least two different magnetic poles on the same surface, and the number of partitions is an even number. It can be two, four, six, eight, etc., preferably four, and the first magnet and the second magnet each have four magnetic pole partitions on opposite sides.
  • the structure of the driving magnet and the driven magnet is similar.
  • the surface of the driving magnet and the driven magnet is provided with at least two partitions and the same surface.
  • the two adjacent partitions have different magnetic properties, that is, the N and S poles are arranged adjacently; if there are 3 partitions, they can be N, S, N, or S, N, and S poles;
  • the driven magnet works by the magnetic permeability of the driving magnet
  • the magnets corresponding to the longitudinal direction of the driven magnet are in a state of opposite-phase attraction, that is, the driving magnet
  • the driven magnet zone in the longitudinal direction corresponds to the S pole
  • the active magnet zone corresponds to the S pole
  • the driven magnet zone in the longitudinal direction corresponds to the N pole.
  • connection portion may also be referred to as a “connection neck”.
  • connection neck For example, in the Chinese patent application number CN201810772574.9, the “connection portion” may also be referred to as a “connection neck”.

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Abstract

本发明公开了一种磁吸式电动剃须刀,包括主体组件、刀头组件,刀头组件设在主体组件上,所述主体组件包括本体及设于本体内的驱动单元,所述刀头组件包括动刀单元、用于支撑动刀单元的壳体,所述刀头组件还包括传递动力的传动单元,所述驱动单元将动力传递至所述传动单元,通过驱动单元和传动单元的作用实现动刀单元旋转;所述壳体和/或本体内固定装配有磁体使所述刀头组件和主体组件磁吸配合,所述磁体密封设置在所述壳体和/或本体内。通过磁吸配合的方式,方便用户进行反复拆卸。

Description

一种磁吸式电动剃须刀 技术领域
本发明涉及日常用品技术领域,具体涉及一种磁吸式电动剃须刀。
背景技术
电动剃须刀一般包括主体组件和与主体组件连接的刀头组件,主体组件一般包括本体、驱动单元、电池和充电口,刀头组件一般包括刀网、动刀单元、壳体和传动轴等,驱动单元包括电机、齿轮单元、驱动轴,通过电机、齿轮单元、驱动轴和传动轴的共同作用驱动动刀单元旋转。现有的刀头组件和主体组件大多通过机械连接结构连接,如采用按键+扣位式的活动连接构造;或者采用过盈配合的卡扣连接构造。
这种连接构造在用户实际使用过程中会出现多种问题,如由于注塑及装配误差导致释放按键偏紧,用户手感很不舒服,有的甚至取不下头盖;另外,按键构造需要在封盖上设置活动扣位,封盖的密封性变差,活动扣位具有间隙可能导致水或者胡渣进入主体逐渐,引起主体组件内部元器件损坏;且按键+扣位式的活动连接构造零部件数量多,模具成本较高,装配工序复杂。
而采用过盈卡扣配合的构造,由于注塑装配及成型公差极易导致扣位过松,挂不住头盖,头盖极易掉落;或者扣位过紧,在多次的插拔使用过程中,卡扣配合部件磨损严重或受力过大导致破裂,头盖与本体组件的连接使用性能不佳。
现有专利中也有披露通过磁体时间刀头组件和主体组件磁吸配合的结构,但是磁体裸露设置,一方面在刀头组件的反复拆装过程中会导致磁体表面刮花,另一方面异物容易进入磁体和塑胶件特别是对于三刀头旋转剃须刀,刀头组件内含有复杂的传动组件,在用水冲洗时,水会进入刀头组件内后不容易流出,长此以往会产生移位、缩短剃须刀的使用寿命。
发明内容
本发明公开了一种磁吸电动剃须刀,通过改进电动剃须刀的驱动方式,提供一种容易密封、防水、震动小、噪音小、具有过载保护功能且传动可靠的剃须刀。
本发明的技术方案如下:
一种磁吸式电动剃须刀,包括主体组件、刀头组件,刀头组件设在主体组件上,所述 主体组件包括本体及设于本体内的驱动单元,所述刀头组件包括动刀单元、用于支撑动刀单元的壳体,所述刀头组件还包括传递动力的传动单元,所述驱动单元将动力传递至所述传动单元,通过驱动单元和传动单元的作用实现动刀单元旋转;所述壳体和/或本体内固定装配有磁体使所述刀头组件和主体组件磁吸配合,所述磁体密封设置在所述壳体和/或本体内。
通过磁吸配合的方式,方便用户进行反复拆卸;另通过将磁体密封设置在壳体和/或本体内,刀头组件的在反复拆装过程中磁体表面不会被刮花;在用水冲洗时,水不会通过磁体与壳体或者本体的装配间隙进入其内部,安全防水。
本方案给出了常规的驱动单元的动能传输的结构,并结合磁吸结构结构更加简单,装配更加容易。
该方案中包括了至少三种方案,即壳体中装配有磁体,或者本体内固定装配有磁体,或者壳体和本体内固定装配有磁体,根据实际需求进行调整。
优选的,所述壳体和本体之一设置磁体,另一为与磁体配合的磁性材料体。好处是,通过磁性材料体的应用可以降低成本,结构复杂程度可以降低,且不影响磁吸效果。
优选的,壳体和本体均设置磁体。本方案给出了磁体的装配方式,方便装配。
优选的,壳体具有与主体组件连接的连接部,所述连接部设有容纳所述磁体的容纳腔,所述刀头组件还包括底盖,所述底盖与连接部通过超声焊接将磁体密封设置在容纳腔内。刀头组件内含有复杂的传动单元,为了减小传动过程中的动力损失,一般会在传动单元上抹上润滑油,超声焊接后使得底盖与容纳腔的表面不存在缝隙,在用水冲洗时,水不会由于磁体的设置进入刀头组件内部,延长剃须刀的使用寿命;通过超声焊接的方式简化刀头组件的结构,不需要额外做密封结构,装配也更容易,比额外做密封结构(例如加硅胶圈)防水更加可靠。
优选的,底盖具有第一凹槽,所述磁体设于第一凹槽内。实现磁体固定装配在第一凹槽内,提高磁体的装配可靠性,防止剃须刀摔落时磁体移位,影响刀头组件与主体组件的配合。
优选的,本体还包括端盖,所述端盖具有第二凹槽,所述磁体设于第二凹槽内,所述端盖与本体超声焊接。密封更加可靠,使主机可水洗,磁体固定装配在第二凹槽内,防止主机组件掉落时磁体摔出,影响使用。
优选的,驱动单元包括电机和驱动轴,所述传动单元包括传动轴,通过传动轴和驱动轴的硬接触实现传动。此种结构成本低、实现动力的实时传输。
优选的,底盖具有第一通孔,所述传动轴伸入所述第一通孔内,所述磁体绕传动轴设 置。使刀头组件和主体组件的吸合力均匀分布,保证剃须刀在工作过程中的平稳性。
优选的,磁体选用普通磁体或多极充磁磁体。简化磁体的安装结构,需要较小的安装空间,使剃须刀小型化。其中上述磁体为一整块磁体。
优选的,磁体的形状为环形、圆形或方形。环形、圆形或方形的形状便于加工。
优选的,刀头组件和主体组件通过防转结构连接。在剃须刀转动过程中防止刀头组件和主体组件的磁吸配合位置移位,增加工作可靠性。
优选的,本体上端凹陷形成凹腔,所述连接部至少部分伸入凹腔内。刀头组件和主体组件的磁吸可靠、传动可靠,在传动过程中使刀头组件位于设定位置,不移位。
优选的,所述本体上端设有凸台,所述凸台至少部分伸入连接部内。保证传动可靠性,使剃须刀在工作过程中刀头组件不移位。
优选的,连接部和本体通过防转结构连接。进一步保证传动可靠性,防止在传动过程中刀头组件产生移位使传动效果下降甚至失效。“连接”可以是直接连接,也可以是间接连接。
优选的,壳体内密封设有与传动单元连接的第一磁体,所述本体内密封设有与驱动单元连接的第二磁体,所述动刀单元在驱动单元、第二磁体、第一磁体及传动单元的作用下驱动旋转。通过实现磁吸结构的第一磁体和第二磁体实现磁力传动,不需要伸出壳体和本体的传动轴和驱动轴,可以做到完全密封,防水效果好;将力的轴传递动力的动密封转化为静密封,实现动力的零泄漏传递,使动刀单元可靠旋转;可避免振动传递,实现机器的平稳工作,减小用户在刮胡过程中面部感受到的震动和拉扯感,提高用户体验;第一磁体与第二磁体之间无刚性连接,具有过载保护功能,当有较多较长胡须作用于刀头组件且超过额定负载时,第一磁体和第二磁体会打滑,动刀单元停止运动,从而保护用户不被扯伤,且对传动结构不会造成直接损坏;第一磁体与第二磁体分别完全密封设置在壳体和本体内,可以使壳体和本体的表面做到平滑,结构简单,维护方便;通过多极充磁磁体简化结构,使剃须刀小型化,在较小的空间里获得较大的磁场,磁吸效果更好且减小动力损失。
优选的,第一磁体和第二磁体之间的距离为L,0.5mm≤L≤10mm。保证刀头组件和主体组件能够磁吸配合,当L大于10mm时,为了实现刀头组件和主体组件能够磁吸配合以及磁力驱动,需要较大体积的磁体,否则磁力吸附效果、磁力驱动效果不好,较大体积的磁体会导致机器的整机体积较大、较重,使用、携带不方便。
由于磁体密封设置于所述壳体和/或本体内,则0.5mm的距离为密封材质的厚度,若小于0.5mm,密封材质的效果不好,也不能很好进行密封。
优选的,第一磁体为从动磁体,所述第二磁体为主动磁体。由于第二磁体连接驱动单 元,驱动单元转动为能量传递来源,选用主动磁体,由于第一磁体和第二磁体相互吸合连接,则第二磁体(主动磁体)转动带动第一磁体(从动磁体)转动。
充分利用主动磁体和从动磁体,在磁力驱动的基础上实现刀头组件与主体组件的磁吸配合,简化结构,两者之间为端面配合,减少过盈配合或卡持部位,最大程度的减少配合部件磨损,防止头盖破损,延长刀头组件的使用寿命。
优选的,主动磁体与本体上端面之间的距离D不大于10mm。当主动磁体完全位于本体内部时,主动磁体到本体上端面的距离包含了本体的壁厚。
优选的,连接部内还设有用于固定从动磁体的第一磁体固定架及用于实现从动磁体旋转的轴承,所述轴承与第一磁体固定架的外壁接触。通过轴承实现从动磁体旋转,结构简单,动力传输损失小。
优选的,本体内设有第二磁体固定架,所述主动磁体设于第二磁体固定架内,第二磁体固定架与驱动单元的驱动轴连接。实现主动磁体与电机的可靠传动,增加主动磁体与驱动轴连接的可靠性,延长剃须刀的使用寿命。
优选的,主动磁体和从动磁体两者相对的表面上分别包括至少两个分区,且同一表面上相邻两个分区的磁性不相同。通过分别在主动磁体和从动磁体的相对的表面上划分至少两个磁性不相同的分区,实现磁力传动,且保证工作可靠性。
本方案中主动磁体和从动磁体结构相似,且为了实现在工作状态下,主动磁体和从动磁体能同步进行转动,故设置主动磁体和从动磁体表面上包括至少两个分区,且同一表面上相邻两个分区的磁性不相同,即N极、S极相邻设置;若有3个分区可以为N极、S极、N极或者S极、N极、S极;
即两个分区以上,当分区数量为偶数时候,则N极、S极数量相等;当分区数量为奇数时候,则N极比S极多一个,或者S极比N级多一个;具体根据实际情况而定。
但是由于从动磁体受主动磁体的导磁作用而工作,故电动剃须刀静止且纵向放置状态下,所述主动磁体与所述从动磁体纵向方向对应的磁性处于异性相吸状态,即主动磁体分区对应N极时,纵向方向上从动磁体分区对应S极;主动磁体分区对应S极时,纵向方向上从动磁体分区对应N极,该设计保证了主动磁体和从动磁体能同步进行转动。
优选的,主动磁体与从动磁体均为多极充磁磁体。主动磁体、从动磁体分别为一整块磁体,主动磁体和从动磁体的极数相同。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本实用新型提供的实施例1所述电动剃须刀的结构示意图。
图2为本实用新型实施例1所述刀头组件的结构示意图。
图3为本实用新型实施例1所述主体组件的结构示意图。
图4为本实用新型实施例3所述另一主体组件的结构示意图。
图5为本实用新型实施例3所述电动剃须刀的一种结构示意图。
图6为本实用新型实施例3所述又一主体组件的结构示意图。
图7为本实用新型实施例4所述电动剃须刀的整机结构示意图。
图8为本实用新型实施例4所述电动剃须刀的刀头组件示意图。
图9为图7中A的剖视图。
图10为本实用新型实施例7所述多极充磁磁体的示意图。
图11为本实用新型实施例7所述两种磁体之间的装配示意图。
图中数字和字母所表示的相应部件名称:
1、主体组件;101、本体;102、驱动单元;1021、电机;1022、驱动轴;103、第二磁体;104、端盖;105、凹腔;106、第二磁体固定架;2、刀头组件;201、壳体;202、连接部;203、第一磁体;204、底盖;205、传动轴;206、第一磁体固定架;207、轴承;2071、轴承内壁;2072、滚珠;2073、轴承外壁;3、凸台;4、凸起;5、凹槽。
具体实施方式
下面结合附图所示的各实施方式对本发明进行详细说明,但应当说明的是,这些实施方式并非对本发明的限制,本领域普通技术人员根据这些实施方式所作的功能、方法、或者结构上的等效变换或替代,均属于本发明的保护范围之内。
一种磁吸式电动剃须刀,包括主体组件、刀头组件,刀头组件设在主体组件上,所述主体组件包括本体及设于本体内的驱动单元,所述刀头组件包括动刀单元、用于支撑动刀单元的壳体,所述刀头组件还包括传递动力的传动单元,所述驱动单元将动力传递至所述传动单元,通过驱动单元和传动单元的作用实现动刀单元旋转;所述壳体和/或本体内固定装配有磁体使所述刀头组件和主体组件磁吸配合,所述磁体密封设置在所述壳体和/或本体 内。
通过磁吸配合的方式,方便用户进行反复拆卸;另通过将磁体密封设置在壳体和/或本体内,刀头组件的在反复拆装过程中磁体表面不会被刮花;在用水冲洗时,水不会通过磁体与壳体或者本体的装配间隙进入其内部,安全防水。
本方案给出了常规的驱动单元的动能传输的结构,并结合磁吸结构结构更加简单,装配更加容易。
该方案中包括了至少三种方案,即壳体中装配有磁体,或者本体内固定装配有磁体,或者壳体和本体内固定装配有磁体,根据实际需求进行调整。
下文针对本方案中的具体磁吸结构进行展开说明。
实施例1:
壳体和本体之一设置磁体,另一为与磁体配合的磁性材料体。好处是,通过磁性材料体的应用可以降低成本,结构复杂程度可以降低,且不影响磁吸效果。
例如,壳体和本体之一采用磁体,另外之一由可以被磁体磁性吸附的磁性材料件制成;或者,壳体和本体之一设有磁体,另外之一上设有与磁体磁性吸附的涂层;或者,壳体和本体之一设有磁体,另外之一由塑料镶嵌磁性材料件或者一部分由磁性材料件制成。或者,壳体和本体之一设有磁体,另外之一的方案有上述各例的组合。
本实施例中以壳体中设置磁体进行详细说明。当壳体201内设有磁体时,本体101可以由金属材质制成(例如铁、钴、镍或其合金)、或者与磁体配合吸附的部分由金属制成;当本体101内设有磁体时,壳体201由金属制成,或者壳体201上于磁体吸附的部分由金属制成。
如图1所示,一种磁吸式电动剃须刀,包括主体组件1、刀头组件2,刀头组件2设在主体组件1上,所述主体组件1包括本体101及设于本体101内的驱动单元102,所述刀头组件2包括动刀单元、用于支撑动刀单元的壳体201及传递动力的传动单元,所述驱动单元102包括电机1021和驱动轴1022,其中,所述壳体201内固定装配有第一磁体203使所述刀头组件2和主体组件1磁吸配合,所述第一磁体203密封设置在壳体201内。
更进一步地,在本例中,传动单元还包括第一齿轮组件,动刀单元具有三个,通过驱动单元102和传动单元的作用实现同时驱动三个动刀单元旋转;根据需要输出力矩的大小,驱动单元102还可以包括第二齿轮组件。
传动单元包括传动轴205,通过传动轴205和驱动轴1022的硬接触实现传动,此种结构成本低、实现动力的实时传输。
上述壳体装配磁体的具体安装方式如下:
参照附图2所示,所述壳体201具有与主体组件1连接的连接部202,所述连接部202设有容纳所述磁体的容纳腔,所述刀头组件2还包括底盖204,底盖204与连接部202可通过密封圈和扣位结构同时结合配合,将磁吸密封设置在容纳腔内,好处是便于对刀头组件2进行拆装修理;也可以底盖204与连接部202通过超声焊接将磁体密封设置在容纳腔内,超声焊接后使得底盖204与容纳腔的表面不存在缝隙,在用水冲洗时,水不会由于磁体的设置进入刀头组件2内部,延长剃须刀的使用寿命,结构更加简单,装配更加容易;
参照附图3所示,所述底盖204具有第一凹槽,第一磁体203设于第一凹槽内。实现第一磁体203固定装配在第一凹槽内,提高磁体的装配可靠性,防止剃须刀摔落时磁体移位,影响刀头组件2与主体组件1的配合。所述第一磁体203为环形且第一凹槽为环形槽;或者第一磁体203具有多个、相应的第一凹槽也具有多个;或者第一磁体203具有多个、同时第一凹槽为环形槽。
第一磁体203与第一凹槽可以通过紧配或注塑的方式与底盖204固定装配。
实施例2:
为了降低电机自身的电磁辐射,如图5所示,电机501包括与控制电器的线路板19电连接的电源线21,以及导电层18,工作状态下,所述线路板19、导电层18、电源线形成闭环电路。
电源线21经导线20,并与线路板19与通过接线端子22相互连接。电机在工作时产生的电磁辐射信号,导电层吸收电机在工作过程中产生的电磁辐射,使电机的电磁辐射传输至线路板上相应的端子,从而实现降低电机在使用过程中产生的电磁辐射,满足EMC标准,降低对使用者的影响。
另外电机的电磁辐射主要来源于电源线,此种结构使得主要辐射源被屏蔽,起到降低电磁辐射的作用;而且对电机的体积几乎不会产生影响,使电机不会由于导电层的设置而占用电吹风的内部空间;另外包裹电源线工艺上容易实现。
导电层18以非接触的形式接收来自电机501的电磁辐射信号。该导电层在使用中的设置位置更加自由,提高结构适应性。
进一步地,导电层18至少包裹在所述电源线21的外部,或所述导电层包裹整个电机。
即导电层18包裹电机所有的组成部分,可以进一步吸收电机其他部分的产生的电磁辐射,起到进一步降低电磁辐射的作用。
上述导电层18可以是导电涂层、铝箔纸、金属件中的一种。上述材料成本低,且容易实现降低电磁辐射的作用。
实施例2:
与实施例1中壳体装配磁体不同,本方案中对于本体中安装磁体进行详细说明:
本体还包括端盖,所述端盖104具有第二凹槽,所述磁体设于第二凹槽内,所述端盖104与本体101超声焊接。密封更加可靠,使主机可水洗,磁体固定装配在第二凹槽内,防止主机组件掉落时磁体摔出,影响使用。
为了与上述第一磁体203作区分,本方案中的磁体采用第二磁体103。
主体组件1还包括端盖104,所述端盖104具有第二凹槽,第二磁体103设于第二凹槽内,所述端盖104与本体101超声焊接。好处是,密封更加可靠,使主机可水洗,第二磁体103固定装配在第二凹槽内,防止主机组件掉落时第二磁体103摔出,影响使用。
端盖104具有第二通孔,所述驱动轴1022伸出第二通孔,所述第二磁体103绕驱动轴1022设置。使刀头组件2和主体组件1的吸合力均匀分布,保证剃须刀在工作过程中的平稳性。所述第二磁体103为环形且第二凹槽为环形槽;或者第二磁体103具有多个、相应的第二凹槽也具有多个;或者第二磁体103具有多个、同时第二凹槽为环形槽。
第二磁体103与第二凹槽也可通过紧配或注塑的方式与底盖204固定装配。
实施例3:
本实施例中的壳体和本体均设置磁体,即同时拥有上述实施例1和实施例2的方案。
为了更好描述磁体的装配,对应进行详细描述:
如图2至6所示,所述壳体201具有与主体连接的连接部202,所述本体101上方具有凹腔105,所述连接部202与凹腔105通过防转结构配合。此种情况下,防转结构为连接部202与凹腔105侧壁的旋扣配合结构;或者连接部202与凹腔105侧壁的凸起4和凹槽5配合结构;或者连接部202与凹腔105底壁的凸起4和凹槽5配合结构。
或者,所述壳体201具有与主体连接的连接部202,所述本体101上方具有容纳所述连接部202的凸台3,所述连接部202与凸台3通过防转结构配合。此种情况下,防转结构为连接部202与凸台3的旋扣配合结构;或者连接部202与凸台3侧壁的凸起4和凹槽5配合结构。
或者,所述壳体201具有与主体连接的连接部202,所述本体101上方具有容纳所述连接部202的凹腔105和凸台3,所述连接部202与凸台3通过防转结构配合。此种情况下防转结构为连接部202与凹腔105的侧壁旋扣配合结构;或者连接部202与凸台3侧壁的旋扣配合结构;或者连接部202与凹腔105侧壁的凸起4和凹槽5配合结构;或者连接部202与凸台3侧壁的凸起4和凹槽5配合结构;或者连接部202与凹腔105底壁的凸起4和凹槽5配合结构。
以上示例中描述的凸起4和凹槽5的设置位置可以互换。可以理解的,凸起4或者凹 槽5可以设置在底盖204上。
本体101上方间隔设置凹腔105和/或凸台3,防转结构可以是在连接部202上间隔设置相应的凸台3和/或凹腔105,从而实现防止刀头组件2和主体组件1的吸合移位。
或者,所述凹腔105的侧壁设有上述的第一凹槽,所述连接部202上设有与第一凹槽配合的第一凸起;或者,所述凹腔105的侧壁设有第二凸起,所述连接部202上设有与第二凸起配合的上述第二凹槽或缺口;或者所述凹腔105的底壁设有第三凸起或第三凹槽,所述连接部202的端部设有与其配合第四凹槽或第四凸起;或者,防转结构为软胶套,软胶套使连接部202和凹腔105过盈配合,当驱动单元102工作时使刀头组件2和主体组件1相对静止。
当第一凹槽以及第二凹槽或缺口内设置磁体后,在第一凹槽以及第二凹槽或者缺口内还有空隙,此时,增加与之匹配的第一凸起以及第二凸起,不仅实现了磁体的装配,而且实现了连接部202处的防转。
综上所述,磁体选用普通磁体或多极充磁磁体。简化磁体的安装结构,需要较小的安装空间,使剃须刀小型化。其中上述磁体为一整块磁体。
具体地,磁体的形状为环形、圆形或方形;采用环形、圆形或方形的形状便于加工。在壳体201内的磁体以及本体101内的磁体均为上述结构中的一种,为了实现匹配,壳体201和本体101内两个磁体的结构相似或者相同,这样壳体201和本体101之间的连接处,由于结构相似或相同,磁吸作用强,安装紧密。
实施例4:
本实施例与实施例1或实施例2或实施例3的区别在于驱动方式的不同,实施例1、实施例2和实施例3的传动方式均为接触式传动,本实施例中的传动方式为非接触式传动。
如图7-图9所示,将壳体201和本体101内均设置磁体。更加具体的,所述壳体201内设有与传动单元连接的第一磁体203,所述本体101内设有与驱动轴1022连接的第二磁体103,所述动刀单元在驱动单元102、第二磁体103、第一磁体203及传动单元的作用下驱动旋转。
通过实现磁吸结构的第一磁体203和第二磁体103实现磁力传动,不需要伸出壳体201和本体101的传动轴和驱动轴1022,可以做到完全密封,防水效果好;将力通过轴传递动力的动密封转化为静密封,实现动力的零泄漏传递,使动刀单元可靠旋转;可避免振动传递,实现机器的平稳工作,减小用户在刮胡过程中面部感受到的震动和拉扯感,提高用户体验;第一磁体203与第二磁体103之间无刚性连接,具有过载保护功能,当有较多较长胡须作用于刀头组件且超过额定负载时,第一磁体203和第二磁体103会打滑,动刀单元 停止运动,从而保护用户不被扯伤,且对传动结构不会造成直接损坏;第一磁体203与第二磁体103分别完全密封设置在壳体和本体内,可以使壳体和本体的表面做到平滑,结构简单,维护方便;通过多极充磁磁体简化结构,使剃须刀小型化,在较小的空间里获得较大的磁场,磁吸效果更好且减小动力损失。
具体地,第一磁体203为从动磁体,所述第二磁体103为主动磁体。由于第二磁体103连接驱动单元,驱动单元转动为能量传递来源,故选用主动磁体;由于第一磁体203和第二磁体103相互吸合连接,则第二磁体103(即主动磁体)转动带动第一磁体203(即从动磁体)转动。
充分利用了主动磁体和从动磁体,在磁力驱动的基础上实现刀头组件与主体组件的磁吸配合,简化结构,两者之间为端面配合,减少过盈配合或卡持部位,最大程度的减少配合部件磨损,防止头盖破损,延长刀头组件的使用寿命。
实施例5:
如实施例4中所述,给出了主动磁体(即第二磁体103,以下用第二磁体103表示主动磁体)和从动磁体(即第一磁体203,以下用第一磁体203表示从动磁体)的描述,本实施例中针对主动磁体和从动磁体的具体安装形式进行说明。
参照附图7-9所示,连接部202内还设有用于固定从动磁体的第一磁体固定架206(即底盖204上的第一凹槽)及用于实现第一磁体203旋转的轴承207,轴承207从内到向外依次包括轴承内壁2071、滚珠2072、轴承外壁2073,所述轴承内壁2071与第一磁体固定架206的外壁接触。好处是,通过轴承实现第一磁体203旋转,结构简单,动力传输损失小。轴承外壁2073和连接部202的内壁紧配,轴承内壁2071和轴承外壁2073之间具有滚珠2072,轴承内壁2071可旋转,轴承外壁2073固定,第一磁体203与第一磁体固定架206紧配,第一磁体固定架206和轴承内壁2071紧配,轴承内壁2071旋转时带动第一磁体固定架206旋转,从而实现第一磁体203的旋转。
本体101内设有第二磁体固定架106(即端盖104处的第二凹槽),所述第二磁体103设于第二磁体固定架106内,第二磁体固定架106与驱动单元102的驱动轴1022连接。
通过上述描述,实现主动磁体与电机1021的可靠传动,增加主动磁体与驱动轴1022连接的可靠性,延长剃须刀的使用寿命。
实施例6:
如实施例4,实施例5安装完成后,具体地主动磁体(即第二磁体103)和从动磁体(即第一磁体203)的尺寸关系如下。
参照附图9所示,当壳体201以及本体101内均设置磁体时,所述主动磁体和从动磁 体之间的距离为L不大于10mm,例如L为0.5mm、1mm、1.5mm、2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm。保证刀头组件2和主体组件1能够磁吸配合,且电机1021通过磁力驱动动刀单元运动的前提下,使电动剃须刀的体积较合理。当L大于10mm时,为了实现刀头组件2和主体组件1能够磁吸配合以及磁力驱动,需要较大体积的磁体,否则磁力吸附效果、磁力驱动效果不好,较大体积的磁体会导致机器的整机体积较大、较重,使用、携带不方便。当主动磁体、从动磁体均裸露设置时,L可以为0mm;当主动磁体和从动磁体分别密封设置在本体101内、壳体201内是,L最大为10mm。优选L=1.2mm。
参照附图9所示,主动磁体与本体101上端面之间的距离D不大于10mm,可以为0.05mm、0.6mm、2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm。本例优选0.6mm。当主动磁体裸露设置时,主动磁体与本体101上端面之间的距离可以做到0mm;当主动磁体完全位于本体101内部时,主动磁体到本体101上端面的距离包含了本体101的壁厚。
通过第一磁体固定架206以及其上盖设的底盖204提高磁体的装配可靠性,防止剃须刀摔落时磁体移位,影响刀头组件2与主体组件1的配合。
实施例7:
更进一步地,主动磁体和从动磁体均为普通磁体;参照附图10所示,当主动磁体为普通磁体时,该普通磁体有多个,且为偶数个,偶数个普通磁体形成于从动磁体配合的面上,具有南极和北极,且优选4个普通磁体,形成南极和北极间隔设置的平面,普通磁体具有6个、8个等;当从动磁体为普通磁体时,与主动磁体为普通磁体时的设置方式同主动磁体。
可以理解的,主动磁体和从动磁体的其中一个为普通磁体、另一个是多极充磁磁体,例如当主动磁体为普通磁体、从动磁体为多极充磁磁体,普通磁体的个数和多极充磁磁体的极数相同。
可以理解的,所述主动磁体与从动磁体均为多极充磁磁体,简化磁体的安装结构,需要较小的安装空间,使剃须刀小型化。参照附图11所示,主动磁体、从动磁体分别为一整块磁体,主动磁体和从动磁体的极数相同。
以上各例中提到的“极数”是指磁体的同一表面上南极和北极的总数。
所述主动磁体可以为环形、圆形、方形等形状,优选主动磁体为环形。
所述从动磁体可以为环形、圆形、方形等形状,优选从动磁体为环形。
第一磁体和第二磁体均为多极充磁磁体(如图10,图11所示)多极充磁磁体是指在同一表面具有至少两个不同磁极的分区,分区个数为偶数个,可以为2个、4个、6个、8个等,优选为4个,第一磁体和第二磁体相对的面上均具有4个磁极分区。
本方案中主动磁体和从动磁体结构相似,且为了实现在工作状态下,主动磁体和从动 磁体能同步进行转动,故设置主动磁体和从动磁体表面上包括至少两个分区,且同一表面上相邻两个分区的磁性不相同,即N极、S极相邻设置;若有3个分区可以为N极、S极、N极或者S极、N极、S极;
即两个分区以上,当分区数量为偶数时候,则N极、S极数量相等;当分区数量为奇数时候,则N极比S极多一个,或者S极比N级多一个;具体根据实际情况而定。
但是由于从动磁体受主动磁体的导磁作用而工作,故电动剃须刀静止且纵向放置状态下,所述主动磁体与所述从动磁体纵向方向对应的磁性处于异性相吸状态,即主动磁体分区对应N极时,纵向方向上从动磁体分区对应S极;主动磁体分区对应S极时,纵向方向上从动磁体分区对应N极,该设计保证了主动磁体和从动磁体能同步进行转动。
本发明中“连接部”也可称为“连接颈”,例如,中国专利申请号CN201810772574.9中,“连接部”也可称为“连接颈”。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (22)

  1. 一种磁吸式电动剃须刀,包括主体组件、刀头组件,刀头组件设在主体组件上,所述主体组件包括本体及设于本体内的驱动单元,所述刀头组件包括动刀单元、用于支撑动刀单元的壳体,所述刀头组件还包括传递动力的传动单元,所述驱动单元将动力传递至所述传动单元,通过驱动单元和传动单元的作用实现动刀单元旋转;其特征在于,所述壳体和/或本体内固定装配有磁体使所述刀头组件和主体组件磁吸配合,所述磁体密封设置在所述壳体和/或本体内。
  2. 根据权利要求1所述的一种磁吸式电动剃须刀,其特征在于,所述壳体和本体之一设置磁体,另一为与磁体配合的磁性材料体。
  3. 根据权利要求1所述的一种磁吸式电动剃须刀,其特征在于,所述壳体和本体均设置磁体。
  4. 根据权利要求3所述的一种磁吸式电动剃须刀,其特征在于,所述壳体具有与主体组件连接的连接部,所述连接部设有容纳所述磁体的容纳腔,所述刀头组件还包括底盖,所述底盖与连接部通过超声焊接将磁体密封设置在容纳腔内。
  5. 根据权利要求4所述的一种磁吸式电动剃须刀,其特征在于,所述底盖具有第一凹槽,所述磁体设于第一凹槽内。
  6. 根据权利要求4所述的一种磁吸式电动剃须刀,其特征在于,所述本体还包括端盖,所述端盖具有第二凹槽,所述磁体设于第二凹槽内,所述端盖与本体超声焊接。
  7. 根据权利要求4所述的一种磁吸式电动剃须刀,其特征在于,所述驱动单元包括电机和驱动轴,所述传动单元包括传动轴,通过传动轴和驱动轴的硬接触实现传动。
  8. 根据权利要求7所述的一种磁吸式电动剃须刀,其特征在于,所述底盖具有第一通孔,所述传动轴伸入所述第一通孔内,所述磁体绕传动轴设置。
  9. 根据权利要求1所述的一种磁吸式电动剃须刀,其特征在于,所述磁体选用普通磁体或多极充磁磁体。
  10. 根据权利要求1所述的一种磁吸式电动剃须刀,其特征在于,所述磁体的形状为环形、圆形或方形。
  11. 根据权利要求1所述的一种磁吸式电动剃须刀,其特征在于,所述刀头组件和主体组件通过防转结构连接。
  12. 根据权利要求4所述的一种磁吸式电动剃须刀,其特征在于,所述本体上端凹陷形成凹腔,所述连接部至少部分伸入凹腔内。
  13. 根据权利要求4所述的一种磁吸式电动剃须刀,其特征在于,所述本体上端设有凸台,所述凸台至少部分伸入连接部内。
  14. 根据权利要求12所述的一种磁吸式电动剃须刀,其特征在于,所述连接部和本体通过防转结构连接。
  15. 根据权利要求1、3-14之一所述的一种磁吸式电动剃须刀,其特征在于,所述壳体内密封设有与传动单元连接的第一磁体,所述本体内密封设有与驱动单元连接的第二磁体,所述动刀单元在驱动单元、第二磁体、第一磁体及传动单元的作用下驱动旋转。
  16. 根据权利要求15所述的一种磁吸式电动剃须刀,其特征在于,所述第一磁体和第二磁体之间的距离为L,0.5mm≤L≤10mm。
  17. 根据权利要求15所述的一种磁吸式电动剃须刀,其特征在于,所述第一磁体为从动磁体,所述第二磁体为主动磁体。
  18. 根据权利要求17所述的一种磁吸式电动剃须刀,其特征在于,所述主动磁体与本体上端面之间的距离D不大于10mm。
  19. 根据权利要求17所述的一种磁吸式电动剃须刀,其特征在于,所述连接部内还设有用于固定从动磁体的第一磁体固定架及用于实现从动磁体旋转的轴承,所述轴承与第一磁体固定架的外壁接触。
  20. 根据权利要求17所述的一种磁吸式电动剃须刀,其特征在于,所述本体内设有第二磁体固定架,所述主动磁体设于第二磁体固定架内,第二磁体固定架与驱动单元的驱动轴连接。
  21. 根据权利要求17所述的一种磁吸式电动剃须刀,其特征在于,所述主动磁体和从动磁体两者相对的表面上分别包括至少两个分区,且同一表面上相邻两个分区的磁性不相同。
  22. 根据权利要求21所述的一种磁吸式电动剃须刀,其特征在于,所述主动磁体与从动磁体均为多极充磁磁体。
PCT/CN2019/095860 2018-07-13 2019-07-12 一种磁吸式电动剃须刀 WO2020011260A1 (zh)

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