CN113021426B

CN113021426B - Integrated rotary shaving unit

Info

Publication number: CN113021426B
Application number: CN202110503690.2A
Authority: CN
Inventors: 陈惠龙
Original assignee: Zhejiang Jinda Motors And Electric Appliances Co ltd
Current assignee: Zhejiang Jinda Motors And Electric Appliances Co ltd
Priority date: 2021-01-28
Filing date: 2021-05-10
Publication date: 2023-03-07
Anticipated expiration: 2041-05-10
Also published as: CN113021426A

Abstract

The invention discloses an integrated rotary shaving unit which comprises a motor, a movable cutter and a cutter net which are assembled into a whole, wherein the movable cutter is circumferentially connected with a main shaft of the motor and rotates at the same speed, and the motor is provided with an electric connection device. The motor, the movable knife and the knife net are integrated into an independent shaving unit, and the requirements of different customers can be met by selecting different numbers or specifications of shaving units to be mounted on the shaver, so that a foundation is provided for product standardization, intellectualization and individuation; on the other hand, the motor and the moving blade of the electric shaver are in one-to-one correspondence, and the problems of speed change and power distribution do not need to be considered, so the electric shaver has simple transmission and compact integral structure, and is more suitable to be used as a standard part of the electric shaver; in addition, the motor is provided with an inwards concave accommodating cavity, so that the space inside the motor is fully utilized, and the shaving unit is more compact.

Description

Integrated rotary shaving unit

Technical Field

The invention relates to the technical field of personal care products, in particular to an integrated rotary shaving unit.

Background

The rotary electric shaver mainly comprises a shaver net, a movable cutter, a transmission mechanism, a motor, a power supply and other components, wherein the transmission mechanism is arranged between the movable cutter and the motor and drives the movable cutter to rotate relative to the shaver net so as to achieve the purpose of cutting beards and hairs. The rotary shaving cutter has the advantages of difficult skin injury, safe use, high shaving speed, no foam and convenient use, thereby having wide application in occasions needing quick shaving.

For a multi-head shaver, a transmission mechanism needs to realize single-shaft input and multi-shaft output of power, namely, power transmission and power distribution are realized simultaneously, and at present, a gear box or a gear set is adopted mostly. The structure of the gear box or the gear set is complex, and the connection assembly of the gear box or the gear set with the moving knife and the motor has higher precision requirement, so that the processing cost of the transmission mechanism is higher. In addition, the complex transmission mechanism also has the defects of large appearance, high transmission noise, difficult maintenance after failure and the like.

Based on this, the present application aims to develop a rotary electric shaver with a simple transmission mechanism, a small and exquisite appearance, low manufacturing cost and convenient component replacement.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art rotary shaver, the present invention provides an integrated rotary shaving unit.

The technical scheme adopted by the invention is as follows: an integrated rotary shaving unit comprises a motor, a movable cutter and a cutter net which are assembled into a whole, wherein the movable cutter is circumferentially connected with a main shaft of the motor and rotates at the same speed, and the motor is provided with an electric connection device; the motor is in main shaft department is equipped with the holding chamber of indent, move the sword and include main blade holder and fix main sword in main blade holder periphery, main blade holder stretch into to hold the chamber, with main shaft drive is connected.

Preferably: the front end of the main shaft is fixed with a transmission block, and the rear end of the main tool apron is provided with a transmission hole matched with the transmission block.

Preferably, the following components: the main tool apron is provided with a limiting block which can slide in a limited manner along the axial direction, a main elastic piece is arranged between the main tool apron and the limiting block, the limiting block is in contact with the front end face of the main shaft, and the main tool tends to cling to the tool net under the action of the main elastic piece.

Preferably, the following components: the outer periphery of the main shaft is fixed with a concentric rotor support, the outer periphery of the rotor support is provided with a coil or a permanent magnet, the rotor support is of a hollow structure, and the accommodating cavity is formed between the main shaft and the rotor support.

Preferably: the motor comprises a front end cover, the front end cover is provided with a center hole, a center tube extending inwards in the axial direction is arranged at the center hole, the center tube extends into the rotor support, a dust ring is arranged between the main shaft and the inner wall of the center tube, and the main shaft, the center tube and the dust ring form the accommodating cavity.

Preferably, the following components: the motor comprises a rear end cover, the rear end cover is provided with a bearing seat hole and is internally provided with a bearing, and the main shaft is arranged in the bearing in a cantilever shape.

Preferably, the following components: the rotor support is a cover-shaped structure with a forward opening, and an annular magnet is fixed on the outer peripheral wall of a cover ring of the cover-shaped structure.

Preferably: the knife net comprises an outer knife net, an inner knife net and a knife net elastic piece acting between the outer knife net and the inner knife net which are arranged concentrically, the outer knife net and the inner knife net can slide in a limited way along the axial direction, and the inner knife net tends to be higher than the outer knife net under the action of the knife net elastic piece; the movable cutter comprises a main cutter seat, a main cutter and a main elastic part which are fixed on the periphery of the main cutter seat, an inner cutter and an inner elastic part which are fixed on the periphery of the inner cutter seat, and the main cutter seat and the inner cutter seat are circumferentially connected with the main shaft and axially limited to slide; the main knife tends to cling to the outer knife net under the action of the main elastic part, and the inner knife tends to cling to the inner knife net under the action of the inner elastic part.

A shaver, comprising a shell, a built-in power supply or a mains supply, wherein the shell is provided with at least one mounting position for mounting the integrated rotary shaving unit as claimed in any one of claims 1 to 9, and the integrated rotary shaving unit is connected with the motor through the power connection device.

The utility model provides an electric motor rotor, includes the main shaft and fixes with one heart the outer spider of main shaft, coil or permanent magnet are installed to spider's periphery, spider is hollow structure, the main shaft with form between the spider hold the chamber, be used for holding with the external connection spare that the main shaft matches.

An electric motor, including the electric motor rotor of claim 11, further include the front end housing, the front end housing has the centre bore, centre bore department is equipped with along the axial to the interior center section of thick bamboo that extends inwards, center section of thick bamboo extends to in the rotor support, establish the dust ring between the main shaft and the inner wall of center section of thick bamboo, main shaft, center section of thick bamboo and dust ring form hold the chamber.

An electric machine comprising a rotor according to claim 11, and further comprising a rear end cap having a bearing housing bore with a bearing disposed therein, the spindle being cantilevered in the bearing.

The invention has the beneficial effects that: the motor, the movable cutter and the cutter net are integrated into an independent shaving unit, and the requirements of different customers can be met by selecting shaving units with different numbers or specifications to be mounted on the shaver, so that a foundation is provided for product standardization, intellectualization and individuation; on the other hand, the motor and the moving blade of the electric shaver are in one-to-one correspondence, and the problems of speed change and power distribution do not need to be considered, so the electric shaver has simple transmission and compact integral structure, and is more suitable to be used as a standard part of the electric shaver; in addition, the motor is provided with an inwards concave accommodating cavity, so that the space inside the motor is fully utilized, and the shaving unit is more compact.

Drawings

Fig. 1 is a perspective view of a first embodiment of the present invention.

Fig. 2 is an exploded view of a first embodiment of the present invention.

Fig. 3 is a cross-sectional view of a first embodiment of the invention.

Fig. 4 is a cross-sectional view of a first embodiment of the present invention (integrated rotary shaving unit).

Fig. 5 is a perspective view of a second embodiment of the present invention.

Fig. 6 is a perspective view of a third embodiment of the present invention.

Fig. 7 is an exploded view of the third embodiment of the present invention.

Fig. 8 is another exploded view of the third embodiment of the present invention.

Fig. 9 is a sectional view of a third embodiment of the present invention.

Fig. 10 is a sectional view (motor) of the third embodiment of the present invention.

Fig. 11 is an exploded view of a fourth embodiment of the present invention.

Fig. 12 is another exploded view of the fourth embodiment of the present invention.

Fig. 13 is a third exploded view (power transmission portion) in the embodiment of the present invention.

Fig. 14 is a sectional view (inner blade net floating) of the fourth embodiment of the present invention.

Fig. 15 is a sectional view (inner blade net pressed down) of the fourth embodiment of the present invention.

The motor comprises a motor 100, a main shaft 101, a containing cavity 102, a transmission block 103, a rotor support 104, a front end cover 105, a central cylinder 106, a dust ring 107, a rear end cover 108, a bearing seat hole 109, a bearing 110, an annular magnet 111, a fixing ring 112, a motor shell 113, a wiring terminal 114, a stator 115 and a driving plate 116;

the movable knife 200, a main knife holder 201, a main knife 202, a transmission hole 203, a limiting block 204, a main elastic part 205, an inner knife holder 206, an inner knife 207, an inner elastic part 208 and a baffle 209;

the knife net comprises a knife net 300, an outer knife net 301, an inner knife net 302, a knife net elastic part 303 and a space ring 304;

a housing 400, a power supply 500.

Detailed Description

The core of the invention is that the motor, the moving blade and the blade net are combined into an integrated rotary shaving unit and then are assembled on the mounting position of the shaver shell in a one-to-one correspondence manner, so as to realize the purpose of manufacturing the rotary electric shaver with simple transmission mechanism, small and exquisite appearance, low manufacturing cost and convenient component replacement.

The invention will be explained in detail by the following technical points of various embodiments with reference to the accompanying drawings. The "front end" in the following embodiments refers to the end or side of the integrated rotary shaving unit that is directed towards the skin, and the "rear end" is the other end opposite to the "front end".

In the first embodiment, as shown in fig. 1 to 3, a button-shaped single-head rotary shaver includes a housing 400, a power supply 500 is disposed in the housing, and the housing 400 has a mounting position for mounting an integrated rotary shaver unit and receiving power. Specifically, as shown in fig. 4, the integrated rotary shaving unit includes a motor 100, a movable blade 200, and a blade mesh 300, which are assembled into a whole, and the movable blade 200 is circumferentially connected to a main shaft 101 of the motor 100 and rotates at the same speed. The movable knife 200 is directly fixed at the front end of the spindle 101, the knife net 300 is installed at the front end of the motor casing 113 through the fixing ring 112, the knife net 300 can float in a small range in the axial direction, and the rear end of the motor 100 can be installed at the installation position of the casing 400 through magnetic adsorption, tight fit and other modes. In addition, the motor 100 is electrically connected to the power supply 500 via the connection terminals 114 on the rear end cap 108. The embodiment is a compact and pocket shaver, which is convenient to carry and use during travel and business trip. The disadvantage is that the movable blade 200 is fixed to the main shaft 101, and cannot be tightly attached to the blade net 300 during shaving, so that the shaving performance is limited.

The second embodiment, as shown in fig. 5, is a three-head rotary shaver, which, like the first embodiment, also includes a housing 400 with a power supply 500 built therein, but the housing 400 is provided with three mounting positions for mounting the integrated rotary shaver unit. The second embodiment has three integrated rotary shaving units, and correspondingly has three motors 100 and three groups of movable cutters 200, wherein the motors 100 and the movable cutters 200 correspond to each other one by one, and the problems of speed change and power distribution are not considered, so that the transmission structure is simple. The integrated rotary shaving unit is used as an independent unit, and different numbers can be flexibly selected to be mounted on the housing 400; furthermore, the rotating speed and the blade shape of the movable blade 200 and the number and the density of the blade grooves and the blade holes on the blade net 300 can be designed into various specifications for different shaving units, so that different requirements of customers can be met only by replacing different shaving units.

In a third embodiment, as shown in fig. 6 to 10, the integrated rotary shaving unit of the second form can be applied to the shaver of the first embodiment, the shaver of the second embodiment or other forms. In the integrated rotary shaving unit of the third embodiment, the movable blade 200 and the main shaft 101 are axially floatable within a certain range, so that a corresponding transmission structure is provided, and the motor 100 is provided with the concave accommodating cavity 102 at the main shaft 101 for accommodating the transmission structure between the movable blade 200 and the main shaft 101. The above structure has advantages in that the inner space of the rotor of the motor 100 is fully utilized, the overall structure design is compact, and the size of the shaving unit is reduced on the premise of ensuring the shaving performance.

In the third embodiment, as shown in fig. 10, the motor 100 is provided with a concave accommodating cavity 102 at the main shaft 101. Specifically, a concentric rotor support 104 is fixed on the outer periphery of the main shaft 101, an annular magnet 111 is mounted on the outer periphery of the rotor support 104, and the rotor support 104 is a hollow cover-shaped structure with a forward opening; the front end cover 105 of the motor 100 is provided with a central hole, a central cylinder 106 extending inwards along the axial direction is arranged at the central hole, the central cylinder 106 extends into the rotor support 104, a dust ring 107 is arranged between the main shaft 101 and the inner wall of the central cylinder 106, and the main shaft 101, the central cylinder 106 and the dust ring 107 form an accommodating cavity 102; a bearing seat hole 109 is formed in a rear end cover 108 of the motor 100, a bearing 110 is arranged in the bearing, the main shaft 101 is installed in the bearing 110 in a cantilever manner, the bearing 110 is an oilless bearing, and the axial size is larger and is about half of the length of the main shaft 101, so that the stability is ensured; the above structures together constitute a motor rotor. A coil frame is fixed in a motor casing 113 of the motor 100 and a coil is wound; the rear end cover 108 is provided with a driving plate corresponding to the coil; the above structure forms a motor stator. The motor 100 is a brushless dc motor, and the rotation speed is adjustable and configurable. In addition, the motor is also a special shaftless motor, but the conventional shaftless motor adopts a hollow shaft mode to realize shaft coupling transmission, and the third embodiment adopts a hollow rotor bracket 104 to form an accommodating cavity 102 at the periphery of the main shaft 101, so that the utilization of space is more sufficient and reasonable, and a larger space can be reserved for installing external transmission parts.

The motor 100 of the third embodiment is expected to be applied to other types of dc motors or ac motors after the rotor frame 104 is preferably made into a frame structure, or the ring magnet 111 outside the rotor frame 104 is replaced by a metal cage or a coil winding.

In the third embodiment, as shown in fig. 7 to 9, the movable blade 200 is connected to the main shaft 101 of the motor 100 in the circumferential direction, rotates at the same speed, and can axially float within a certain range, and a part or all of the transmission structure of the movable blade 200 and the motor 100 extends into the accommodating cavity 102. Specifically, the movable knife 200 includes a main knife holder 201 and a main knife 202 fixed on the periphery of the main knife holder 201, a transmission hole 203 with an approximate triangular cross section is formed in the rear end of the main knife holder 201, a transmission block 103 with an approximate triangular cross section is fixed at the front end of the main shaft 101, and the rear end of the main knife holder 201 extends into the accommodating cavity 102, so that the transmission hole 203 is matched with the transmission block 103. The main tool apron 201 is internally provided with a limiting block 204, the limiting block 204 is clamped in the main tool apron 201 through three buckles and can slide in a certain range along the axial direction, a cylindrical spring is arranged between the main tool apron 201 and the limiting block 204 to serve as a main elastic part 205, the limiting block 204 is in contact with the front end face of the main shaft 101, and the main tool 202 is tightly attached to the tool net 300 under the action of the main elastic part 205. The third embodiment has a simple transmission structure, which realizes the transmission between the movable blade 200 and the motor 100, and the structure thereof is well matched with the accommodating cavity 102 of the motor 100.

In the fourth embodiment, as shown in fig. 11 to 15, the third type of integrated rotary shaving unit has a structure in which the movable blade 200 and the blade net 300 are concentrically arranged inside and outside, and can slide in a certain range in the axial direction. Compared with the third embodiment, the third embodiment has the greatest characteristic that a complete blade net 300 is divided into an inner group and an outer group, and the blade net is elastically floated, so that the blade net can better fit the skin, and the shaving effect is improved.

In the fourth embodiment, the knife net 300 has the following specific structure: the outer knife net 301 and the inner knife net 302 can slide in a limited way along the axial direction, and the inner knife net 302 tends to be higher than the outer knife net 301 under the action of the knife net elastic piece 303; the outer cutter mesh 301 is annular, the inner cutter mesh 302 is disc-shaped, and the inner cutter mesh 302 is arranged at the center of the outer cutter mesh 301 through a spacing ring 304 and realizes axial sliding; the knife net elastic element 303 is limited in space, and adopts a ring-shaped elastic sheet structure, and the elastic force acts on the axial directions of the outer knife net 301 and the inner knife net 302 respectively.

In the fourth embodiment, the movable blade 200 has the following specific structure: the main tool apron comprises a main tool apron 201, a main tool 202 and a main elastic piece 205 which are fixed on the periphery of the main tool apron 201, an inner tool 206, an inner tool 207 and an inner elastic piece 208 which are fixed on the periphery of the inner tool apron 206, wherein the main tool apron 201 and the inner tool apron 206 are circumferentially connected with a main shaft 101 and axially limited to slide; the main knife 202 tends to cling to the outer knife net 301 under the action of the main elastic element 205, and the inner knife 207 tends to cling to the inner knife net 302 under the action of the inner elastic element 208; the main tool apron 201 and corresponding parts are basically similar to those of the third embodiment; the inner elastic piece 208 is an annular elastic piece and acts between the inner knife net 302 and the inner knife 207, the annular elastic piece is installed on the central shaft of the inner knife net 302 through a baffle 209, and the baffle 209 is fixed with the central shaft of the inner knife net 302 through spot welding and the like.

In the fourth embodiment, in fig. 11, 12 and 13, the transmission hole 203 on the movable knife 200, which is matched with the transmission block 103 of the main shaft 101, is disposed on the limiting block 204 of the main elastic member 205, and in fig. 14 and 15, the transmission hole 203 on the movable knife 200, which is matched with the transmission block 103 of the main shaft 101, is directly disposed at the lower end of the main knife holder 201, and the two principles are the same and are all used for realizing the synchronous rotation of the main shaft 101, the transmission block 103, the main knife holder 201, the limiting block 204 and the inner knife holder 206.

It should be understood that the above-described embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the embodiments of the present invention. Obvious variations or modifications of the present invention are possible within the spirit of the present invention.

Claims

1. An integrated rotary shaving unit comprises a motor (100), a movable cutter (200) and a cutter mesh (300) which are assembled into a whole, wherein the movable cutter (200) is circumferentially connected with a main shaft (101) of the motor (100) and rotates at the same speed, and the motor (100) is provided with an electric connection device, which is characterized in that:

an inwards concave accommodating cavity (102) is formed in the main shaft (101) of the motor (100), the movable knife (200) comprises a main knife holder (201) and a main knife (202) fixed on the periphery of the main knife holder (201), and the main knife holder (201) extends into the accommodating cavity (102) and is in transmission connection with the main shaft (101);

the knife net (300) comprises an outer knife net (301), an inner knife net (302) and a knife net elastic piece (303) acting between the outer knife net and the inner knife net, the outer knife net (301) and the inner knife net (302) can slide in a limited mode along the axial direction, and the inner knife net (302) tends to be higher than the outer knife net (301) under the action of the knife net elastic piece (303);

the movable knife (200) comprises a main knife holder (201), a main knife (202) and a main elastic part (205) which are fixed on the periphery of the main knife holder (201), an inner knife holder (206), an inner knife (207) and an inner elastic part (208) which are fixed on the periphery of the inner knife holder (206), wherein the main knife holder (201) and the inner knife holder (206) are circumferentially connected with the main shaft (101) and axially limited to slide;

the main knife (202) tends to cling to the outer knife net (301) under the action of the main elastic element (205), and the inner knife (207) tends to cling to the inner knife net (302) under the action of the inner elastic element (208).

2. The integrated rotary shaving unit of claim 1, wherein: the front end of the main shaft (101) is fixed with a transmission block (103), and the rear end of the main tool apron (201) is provided with a transmission hole (203) matched with the transmission block (103).

3. The integrated rotary shaving unit of claim 1, wherein: the main cutter holder (201) is provided with a limiting block (204) which can slide along the axial direction in a limited manner, a main elastic piece (205) is arranged between the main cutter holder (201) and the limiting block (204), the limiting block (204) is in contact with the front end face of the main shaft (101), and the main cutter (202) tends to cling to the cutter net (300) under the action of the main elastic piece (205).

4. The integrated rotary shaving unit of claim 1, wherein: the outer periphery of the main shaft (101) is fixed with a concentric rotor support (104), coils or permanent magnets are installed on the outer periphery of the rotor support (104), the rotor support (104) is of a hollow structure, and the accommodating cavity (102) is formed between the main shaft (101) and the rotor support (104).

5. The integrated rotary shaving unit of claim 4, wherein: motor (100) includes front end housing (105), front end housing (105) have the centre bore, centre bore department is equipped with along the axial center section of thick bamboo (106) of inwards extending, a center section of thick bamboo (106) extend to in rotor support (104), main shaft (101) with establish dust ring (107) between the inner wall of a center section of thick bamboo (106), main shaft (101), a center section of thick bamboo (106) and dust ring (107) form hold chamber (102).

6. The integrated rotary shaving unit of claim 4, wherein: the motor (100) comprises a rear end cover (108), a bearing seat hole (109) is formed in the rear end cover (108), a bearing (110) is arranged in the rear end cover, and the main shaft (101) is installed in the bearing (110) in a cantilever mode.

7. The integrated rotary shaving unit of claim 4, wherein: the rotor support (104) is of a cover-shaped structure with a forward opening, and a ring-shaped magnet (111) is fixed on the outer circumferential wall of a cover ring of the cover-shaped structure.

8. A shaver, comprising a housing (400), a built-in power supply (500) or a mains supply, said housing (400) having at least one mounting location for mounting an integrated rotary shaving unit according to any one of claims 1-7 and being electrically connected to said motor (100) via said electrical connection means.