WO2020011260A1 - 一种磁吸式电动剃须刀 - Google Patents
一种磁吸式电动剃须刀 Download PDFInfo
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/14—Clippers 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/28—Drive 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
Description
Claims (22)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
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CN201821116297.8U CN208714051U (zh) | 2018-07-13 | 2018-07-13 | 一种磁力驱动电动剃须刀 |
CN201810772574.9 | 2018-07-13 | ||
CN201821116646.6 | 2018-07-13 | ||
CN201810772574.9A CN108687804A (zh) | 2018-07-13 | 2018-07-13 | 一种磁力驱动的电动剃须刀 |
CN201821116297.8 | 2018-07-13 | ||
CN201821116646.6U CN208614838U (zh) | 2018-07-13 | 2018-07-13 | 一种磁吸式电动剃须刀 |
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