CN112678629A

CN112678629A - Take-up device and electric hair drier thereof

Info

Publication number: CN112678629A
Application number: CN202011444656.4A
Authority: CN
Inventors: 金建军
Original assignee: Cixi Jinyue Electronics Co ltd
Current assignee: Cixi Jinyue Electronics Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-04-20

Abstract

The application relates to a take-up device, which comprises a retarding gear box, a rolling disc and a limiting cover, wherein the retarding gear box, the rolling disc and the limiting cover are sequentially arranged in the axial direction, a central shaft is axially arranged on the retarding gear box, the central shaft axially penetrates through the rolling disc and is fixedly connected with the limiting cover, one side, facing the limiting cover, of the rolling disc is provided with an accommodating cavity, a coil spring is arranged in the accommodating cavity, one end of the coil spring is fixedly connected with the central shaft, the other end of the coil spring is fixedly connected with the rolling disc, and a speed reduction mechanism linked with the rolling disc is arranged in; reduction gears comprises drive gear group and reduction gear group, drive gear group and rolling disc linkage, reduction gear group comprises at least one reduction gear spare, reduction gear spare includes the reduction gear and the coaxial setting that organize the linkage with drive gear and is used for rotating the axis of rotation that supports reduction gear, install in slow speed gear box at the both ends of axis of rotation. This application has the effect that can at the uniform velocity rolling power cord.

Description

Take-up device and electric hair drier thereof

Technical Field

The application relates to the field of household appliances, in particular to a take-up device and an electric hair drier thereof.

Background

The blower is composed of a group of electric heating wires and a high-speed small fan. When the fan is electrified, the heating wire can generate heat, and the air blown out by the fan passes through the heating wire and is changed into hot air. The hair dryer is mainly used for drying and shaping hair, but also can be used for local drying, heating and physical therapy in laboratories, physical therapy rooms, industrial production, art designing and the like.

The existing hair dryer usually adopts a power supply mode of an external power cord to supply power to the fan and the electric heating wire, but the hair dryer with the external power cord needs to wind the power cord on a holding handle or a shell of the hair dryer for storage in the process of storing the electric wire. And another common mode for winding the power cord is to arrange a rotatable winding disc in the electric hair drier, and the power cord is wound on the winding disc through the rotation of the winding disc, so that the condition that the power cord is exposed is reduced.

However, in the practical use process, the rolling of the power line is usually realized by adopting a torsion spring rolling mode, so that the inventor finds that the rolling speed of the power line is too high in the process of rolling the power line, and then the phenomenon of 'tail flicking' of the power line is caused, and the power line injures a user.

Disclosure of Invention

In order to realize receiving line at the uniform velocity, this application provides a take-up and hairdryer thereof.

In a first aspect, the present application provides a take-up device that adopts the following technical scheme:

a take-up device comprises a retarding gear box, a winding disc and a limiting cover which are sequentially arranged in the axial direction, wherein a central shaft is axially arranged on the retarding gear box, the central shaft axially penetrates through the winding disc and is fixedly connected with the limiting cover, one side, facing the limiting cover, of the winding disc is provided with an accommodating cavity, a coil spring is arranged in the accommodating cavity, one end of the coil spring is fixedly connected with the central shaft, the other end of the coil spring is fixedly connected with the winding disc, and a speed reducing mechanism linked with the winding disc is arranged in the retarding gear box;

reduction gears comprises drive gear group and reduction gear group, drive gear group and rolling disc linkage, reduction gear group comprises at least one reduction gear spare, reduction gear spare includes the reduction gear and the coaxial setting that organize the linkage with drive gear and is used for rotating the axis of rotation that supports reduction gear, install in slow speed gear box at the both ends of axis of rotation.

Through adopting above-mentioned technical scheme, this kind of arrangement makes can be at the uniform velocity withdraw in the in-process of accomodating the power cord in the nature backrush, it specifically influences through many-sided mutual restriction, one of them, in the in-process that the power cord just begins in the backrush, the part that the power cord exposes outside is longer, and weight is heavier, but the coil spring is because rolling up to the maximum deformation volume, and elastic deformation's strength is great, and the power that needs when destroying the quiescent condition and switching over to the rotation state between the gear is great, and along with the continuation of rolling up process, the part that the power cord exposes outside constantly reduces, and weight constantly alleviates, the elasticity of coil spring also reduces thereupon, the slew velocity of rolling dish has the reduction of certain degree. Meanwhile, as the winding process is continuously carried out, the outer diameter of the power line wound on the winding disc is continuously increased, so that the length of the power line which can be wound by rotating the winding disc by one circle is longer, and the outer diameter of the power line is smaller in the process of rotating at a higher speed, so that the length of the power line which can be wound by rotating the winding disc by one circle is smaller, and the uniform winding of the winding device in the winding process is realized.

Preferably, the number of the reduction gear parts is three, the three reduction gear parts are defined as a first reduction gear part, a second reduction gear part and a third reduction gear part respectively, and the reduction gear of the first reduction gear part comprises a first gear which is meshed with the transmission gear set and a second gear which is coaxially arranged with the first gear and is relatively fixed;

the reduction gear of the second reduction gear part comprises a third gear meshed with the second gear and a fourth gear which is coaxially arranged with the third gear and is relatively fixed;

the reduction gear of the third reduction gear member includes a fifth gear intermeshed with the fourth gear.

Through adopting above-mentioned technical scheme, the loss that the line in-process produced has further been improved in setting up of three reduction gear spare, has improved the resistance that the line in-process produced, and then goes to match in order to reach the purpose that take-up received at the uniform velocity. Simultaneously, the three reduction gear pieces are arranged, and compared with one reduction gear piece, the structure stability is higher.

Preferably, the first reduction gear element, the second reduction gear element and the third reduction gear element increase in angular velocity in sequence when rotating.

By adopting the technical scheme, the rotating speeds of the second reduction gear piece and the third reduction gear piece are improved due to the sequentially increased angular speeds, and the work done at the contact friction position in unit time is improved by increasing the rotating speeds, so that the instantaneous power applied to the power line is improved, and the retarding effect is further improved.

Preferably, an outer tooth socket is arranged on the outer periphery of the winding disc, and the transmission gear set comprises a transmission gear meshed with the outer tooth socket of the winding disc and a driving gear coaxially arranged with the transmission gear and linked with the reduction gear set;

one side of the transmission gear, which is close to the driving gear, is fixedly connected with a coaxially arranged pawl, and one side of the driving gear, which is close to the transmission gear, is fixedly connected with a coaxially arranged ratchet which is matched with the pawl;

when the winding disc winds up, the transmission gear and the driving gear rotate synchronously.

By adopting the technical scheme, when the power cord is wound up by the winding mechanism, the transmission gear and the driving gear synchronously rotate, so that the winding mechanism can drive the speed reducing mechanism to rotate, when the power cord is drawn out from the winding mechanism, the transmission gear starts to rotate relative to the driving gear under the action of the pawl and the ratchet, and the phenomenon similar to idle rotation occurs, so that the speed of drawing the power cord by the speed reducing mechanism cannot be reduced, meanwhile, when the power cord receives an end part through the winding mechanism, the outer tooth groove stops instantly, the speed reducing gear piece in the speed reducing mechanism has a tendency of continuing to rotate due to inertia, the arrangement of the ratchet and the pawl ensures that the speed reducing mechanism does not stop instantly along with the stop of the winding mechanism, but continues to move for a period of time and then stops slowly, and the damage of the speed reducing mechanism caused by instant stop under the stress is avoided, the service life is prolonged.

Preferably, a slip ring installation cavity is formed in one side, facing the speed reduction gear box, of the winding disc, a first slip ring and a second slip ring which are located in the slip ring installation cavity are coaxially installed on the winding disc, a wiring cavity is formed in the winding disc, the winding disc comprises an upper connecting seat and a lower connecting seat which are coaxially fixed to each other, a wiring opening communicated with the wiring cavity is formed in the upper connecting seat, the first slip ring and the second slip ring are provided with insertion pieces which penetrate into the wiring cavity, a first contact piece abutted against the first slip ring and a second contact piece abutted against the second slip ring are fixed on the speed reduction gear box, and lead holes for leading in wires to be electrically connected with the first contact piece and the second contact piece are formed in the circumferential direction of the speed reduction gear box.

Through adopting above-mentioned technical scheme, in the use, retarder gear box and spacing lid are fixed on the casing of hairdryer, and the setting that the center pin axial runs through the rolling dish makes the rolling dish take place axial rotation between retarder gear box and spacing lid. Wherein, the power cord is connected with first sliding ring and second sliding ring in through the wiring cavity, the lead wire is introduced in through the pin hole and is connected with first contact and second contact, when the rolling dish takes place to rotate, first sliding ring and second sliding ring rotate along with the rolling dish, nevertheless because first contact and second contact carry out the butt with first sliding ring and second sliding ring all the time, and then make the rolling dish at the rotation in-process, first contact and first contact all can be realized the electricity with first sliding ring and the second sliding ring that correspond and are connected, and then avoided the electric wire to take place to twine, the condition such as knot.

Preferably, the first slip ring and the second slip ring both include a conducting ring and fixing pins, the fixing pins are provided with a plurality of conducting rings and inserted in the winding disc, and the inserting pieces are connected to the conducting rings and inserted in the winding disc.

Through adopting above-mentioned technical scheme, the mode of setting up of fixed foot makes first sliding ring and second sliding ring can fix on the rolling dish through the mode of pegging graft, and the mounting means is simple.

Preferably, the first contact piece and the second contact piece respectively comprise a fixing portion, a connecting portion, a contact portion and a leading-out portion which are integrally arranged, the fixing portion is attached to the retarding gearbox, the leading-out portion is inserted into the retarding gearbox, the connecting portion is fixed to the fixing portion and is provided with two connecting portions, the distance between the two connecting portions is gradually increased along the direction from the retarding gearbox to the winding disc, the two connecting portions always have the trend of being close to each other, and the contact portion is arranged on the connecting portion and used for being electrically connected with the first sliding ring/the second sliding ring.

Through adopting above-mentioned technical scheme, this kind of setting makes can realize the fixed of first contact and second contact through the mode of pegging graft on the one hand, and on the other hand, the setting of two connecting portion can improve the pressure of contact site to first sliding ring/second sliding ring, and then improves contact effect between them, guarantees that electric current can be comparatively stable conducts through contact department between them.

Preferably, a limiting partition plate located between the first sliding ring and the second sliding ring is arranged on the winding disc, and the contact portions of the first contact pieces and the contact portions of the second contact pieces are respectively limited on two sides of the limiting partition plate.

Through adopting above-mentioned technical scheme, when the rolling dish rotated, outside skew can take place for first contact and second contact under the effect of centrifugal force, and the setting up of spacing baffle makes the part that first contact and second contact and first sliding ring and second sliding ring contacted can carry on spacingly, and then can not take place the circumstances such as short circuit that the dislocation leads to.

Preferably, the contact portion is provided with a contact point abutting against the first slip ring/the second slip ring, and a side of the contact point facing the first slip ring/the second slip ring is an arc spherical surface.

By adopting the technical scheme, the arrangement mode can reduce the contact area between the contact and the first sliding ring/the second sliding ring, and further improves the compression effect.

In a second aspect, the electric hair dryer provided by the application adopts the following technical scheme:

a hair drier comprises the wire collecting device.

In summary, the present application includes at least one of the following beneficial technical effects:

1. no matter how the take-up device rotates, a good electrifying effect can be ensured, and the situations of wire knotting and the like can not occur;

2. the power line can be wound at a constant speed.

Drawings

Fig. 1 is a schematic structural view of a wire take-up device in embodiment 1 of the present application.

Fig. 2 is an exploded schematic view of a wire take-up device in embodiment 1 of the present application.

Fig. 3 is an exploded schematic view of the winding disc, the first slip ring and the second slip ring in embodiment 1 of the present application.

Fig. 4 is an explosion schematic diagram of the winding disc, the first slip ring and the second slip ring in another direction in embodiment 1 of the present application.

Fig. 5 is a plan view of a wire takeup device in embodiment 1 of the present application.

Fig. 6 is a cross-sectional view a-a of fig. 5.

Fig. 7 is a schematic structural view of the first contact piece in embodiment 1 of the present application.

Fig. 8 is a schematic structural view of the first contact piece and the second contact piece abutting against the first slip ring and the second slip ring on the winding disc in embodiment 1 of the present application.

Fig. 9 is a schematic structural view of a reduction mechanism in embodiment 1 of the present application.

Fig. 10 is an exploded view of the reduction gear set and the reduction gear box in embodiment 1 of the present application.

Fig. 11 is a plan view of the reduction mechanism in embodiment 1 of the present application.

Fig. 12 is an exploded view of the transmission gear set and the retarder gear box according to embodiment 1 of the present application.

Fig. 13 is an exploded view of a drive gear set in embodiment 1 of the present application.

Fig. 14 is a schematic structural view of the hair dryer in embodiment 2 of the present application.

Description of reference numerals: 1. a retarder gear box; 2. a winding disc; 3. a limiting cover; 21. a wiring opening; 11. a wire hole; 12. a central shaft; 22. an accommodating chamber; 4. a coil spring; 23. an upper connecting seat; 24. a lower connecting seat; 25. a limiting disc; 26. inserting the column; 27. inserting grooves; 28. a reinforcing block; 29. a slip ring mounting cavity; 5. a first slip ring; 6. a second slip ring; 7. a first contact piece; 8. a second contact piece; 51. conducting rings; 52. a fixing leg; 53. inserting sheets; 210. a spacing clapboard; 71. a fixed part; 72. a connecting portion; 73. a contact portion; 74. a lead-out section; 75. a contact; 9. a speed reduction mechanism; 91. a drive gear set; 92. a reduction gear set; 93. a rotating shaft; 12. a rotating seat; 13. a groove is arranged in a penetrating way; 94. a first reduction gear member; 95. a second reduction gear member; 96. a third reduction gear member; 97. a reduction gear; 941. a first gear; 942. a second gear; 951. a third gear; 952. a fourth gear; 961. a fifth gear; 211. an outer gullet; 911. a transmission gear; 912. a drive gear; 14. installing a groove body; 913. an extension portion; 914. a pawl; 915. a ratchet; 101. a front housing; 102. a rear housing; 103. a grip portion; 104. a heating module; 105. a fan module; 106. a wire take-up device.

Detailed Description

The present application is described in further detail below with reference to figures 1-14.

Example 1:

the embodiment 1 of the application discloses take-up device. Referring to fig. 1, take-up includes that the axial arranges in proper order retarber gear box 1, rolling dish 2 and spacing lid 3, and rolling dish 2 rotates to be connected in order to be used for the rolling power cord between retarber gear box 1 and spacing lid 3. Wherein, be provided with the wiring cavity in the rolling dish 2, be provided with the wiring opening 21 with wiring cavity intercommunication on the lateral wall of rolling dish 2, the one end of power cord is passed through wiring opening 21 and is inserted in the wiring cavity, and the periphery of retarder gear 1 is provided with two pin holes 11 that are used for inserting the wire.

Referring to fig. 2, a central shaft 12 is arranged on the retarder gearbox 1, and the central shaft 12 axially penetrates through the winding disc 2 and is fixedly connected with the limit cover 3. One side of the winding disc 2 facing the limiting cover 3 is provided with an accommodating cavity 22, and the limiting cover 3 covers the opening of the accommodating cavity 22 to cover the accommodating cavity 22. A coil spring 4 is arranged in the accommodating cavity 22, the central end of the coil spring 4 is fixedly connected with the central shaft 12, and the other end of the coil spring 4 is fixed on the side wall of the winding disc 2 facing the accommodating cavity 22. When the external force disappears, the winding disc 2 rotates reversely under the action of the coil spring 4, and then the power line is wound on the winding disc 2 again.

Referring to fig. 3 and 4, the winding disc 2 includes an upper connecting seat 23 and a lower connecting seat 24 coaxially arranged, and the accommodating cavity 22 is arranged on the lower connecting seat 24. Limiting discs 25 for limiting the winding width of the power line are arranged on the outer circumferences of the upper connecting seat 23 and the lower connecting seat 24. A plurality of inserting columns 26 are integrally arranged on the upper connecting seat 23, and inserting grooves 27 for inserting the plurality of inserting columns 26 one by one are correspondingly arranged on the lower connecting seat 24. Wherein, wiring opening 21 sets up on last connecting seat 23, corresponds to be provided with on lower connecting seat 24 and wears to locate reinforcement 28 in wiring opening 21, and then improves the joint strength between upper connecting seat 23 and lower connecting seat 24 in the rotation process of rolling dish 2.

Last connecting seat 23 of rolling dish 2 is provided with sliding ring installation cavity 29 towards one side of retarder gear box 1, coaxial arrangement has first sliding ring 5 and the second sliding ring 6 that is located sliding ring installation cavity 29 on the rolling dish 2, be fixed with on the retarder gear box 1 with the first contact 7 of first sliding ring 5 butt and with the second contact 8 of second sliding ring 6 butt, at rolling dish 2 pivoted in-process, first contact 7 slides all the time on first sliding ring 5 and keeps the butt with first sliding ring 5, and is the same, second contact 8 slides all the time on second sliding ring 6 and keeps the butt with second sliding ring 6.

The first slip ring 5 and the second slip ring 6 both include a conductive ring 51, fixing pins 52 and insertion pieces 53, the fixing pins 52 are circumferentially disposed on the conductive ring 51, the insertion pieces 53 are also disposed on the conductive ring 51, and the insertion pieces 53 are spaced from the fixing pins 52 on the conductive ring 51. The first slip ring 5 differs from the second slip ring 6 in the diameters of the inner and outer rings of the conductive ring 51 and in the positions where the fixing feet 52 and the insertion tabs 53 are arranged. The outer diameter of the conductive ring 51 of the first slip ring 5 needs to be smaller than the inner diameter of the conductive ring 51 of the second slip ring 6, the insertion sheet 53 and the fixing pin 52 of the first slip ring 5 are disposed on the outer circumference of the conductive ring 51, and the insertion sheet 53 and the fixing pin 52 of the second slip ring 6 are disposed on the inner circumference of the conductive ring 51.

Referring to fig. 3 and 6, when first sliding ring 5 and second sliding ring 6 are inserted and fixed on rolling disc 2, fixed foot 52 and inserted sheet 53 are all inserted and connected on rolling disc 2, and inserted sheet 53 of first sliding ring 5 and second sliding ring 6 is all worn to establish into the wiring cavity, and zero line and live wire that the power cord was worn to establish into the one end in the wiring cavity are connected with inserted sheet 53 of first sliding ring 5 and inserted sheet 53 of second sliding ring 6 respectively. Further, a limiting partition plate 210 is integrally arranged on the winding disc 2 and located between the first slip ring 5 and the second slip ring 6 to separate the first slip ring 5 and the second slip ring 6.

Referring to fig. 6 and 7, each of the first contact piece 7 and the second contact piece 8 includes a fixed portion 71, a connecting portion 72, a contact portion 73, and a lead-out portion 74, which are integrally provided. The fixing portion 71 and the retarder gearbox 1 are attached to each other towards one side wall of the winding disc 2, the leading-out portion 74 is inserted into the retarder gearbox 1 to enable a lead to be connected with the leading-out portion 74 through the lead hole 11, the connecting portions 72 are integrally arranged on the fixing portion 71 and are provided with two, the two connecting portions 72 are respectively arranged on two sides of the fixing portion 71, and the distance between the two connecting portions 72 is gradually increased along the extending direction from the retarder gearbox 1 to the winding disc 2. In the embodiment, the first contact piece 7 and the second contact piece 8 are integrally formed, and the connecting portions 72 at both sides tend to approach each other all the time, so as to improve the contact effect between the contact portion 73 and the conductive ring 51.

The contact portion 73 is disposed on a side of the connecting portion 72 away from the fixing portion 71, and a contact 75 is disposed on the contact portion 73, the contact 75 is configured to be abutted against the conductive ring 51 of the first slip ring 5/the second slip ring 6, and a current is conducted to the first contact piece 7 and the second contact piece 8 through the abutting of the conductive ring 51 and the contact 75. It should be noted that the side of the contact 75 facing the first and

second slip rings

5, 6 is a circular spherical surface.

Referring to fig. 8, when the first contact piece 7 and the second contact piece 8 abut against the corresponding first slip ring 5 and the second slip ring 6, the contact portion 73 of the first contact piece 7 and the contact portion 73 of the second contact piece 8 are respectively located at two sides of the limiting partition 210 and are limited by the limiting partition 210, so that the first contact piece 7 and the second contact piece 8 are not deformed by centrifugal force and are not in contact with adjacent conducting strips.

Referring to fig. 9 and 10, a speed reducing mechanism 9 for adjusting the winding speed of the winding disc 2 is arranged in the speed reducing gear box 1, the speed reducing mechanism 9 is composed of a transmission gear set 91 in transmission connection with the winding disc 2 and a speed reducing gear set 92 in transmission connection with the transmission gear set 91, the speed reducing gear set 92 is composed of at least one speed reducing gear piece, the speed reducing gear piece comprises a speed reducing gear 97 in transmission connection with the transmission gear set 91 and a rotating shaft 93 coaxially arranged and used for rotatably supporting the speed reducing gear, two ends of the rotating shaft 93 are installed in the speed reducing gear box 1, a rotating seat 12 for the rotating shaft 93 to penetrate through is integrally arranged in the speed reducing gear box 1, and a penetrating groove 13 for the rotating shaft 93 to penetrate through is formed in the rotating seat 12.

The reduction gear member may be fixed in various manners, and in one embodiment, the reduction gear 97 is integrally provided with the rotation shaft 93, and the rotation shaft 93 is inserted into the through groove 13 and can rotate relatively, and at this time, the friction surface is located at a portion where the rotation shaft 93 and the through groove 13 contact each other.

In another embodiment, the reduction gear 97 is sleeved on the rotating shaft 93, the rotating shaft 93 is inserted into the through groove 13, and the rotating shaft 93 and the speed reduction gear box 1 are relatively and fixedly connected through interference fit or the like, at this time, the friction surface is located at a portion where the rotating shaft 93 and the reduction gear 97 are in contact with each other.

In another embodiment, the reduction gear 97 is sleeved on the rotating shaft 93, the rotating shaft 93 is inserted into the through groove 13 and can rotate relatively, and at this time, the friction surfaces are located at a portion where the rotating shaft 93 and the through groove 13 contact each other and a portion where the rotating shaft 93 and the reduction gear 97 contact each other.

It should be noted that the installation manners in the above three embodiments can be selected, and can be combined by itself according to actual production needs, which is not described herein again.

Referring to fig. 10 and 11, the reduction gear elements are provided in total in three, defining three reduction gear elements as a first reduction gear element 94, a second reduction gear element 95, and a third reduction gear element 96, which are engaged with each other in this order.

The reduction gear 97 of the first reduction gear member 94 includes a first gear 941 engaged with the rotation gear set and a second gear 942 coaxially disposed with the first gear 941 and fixed relatively thereto, and the radius of the second gear 942 is greater than that of the first gear 941.

The reduction gear 97 of the second reduction gear unit 95 includes a third gear 951 engaged with the second gear 942 and a fourth gear 952 coaxially disposed with the third gear 951 and fixed relative thereto, wherein the radius of the second gear 942 is greater than the radius of the third gear 951, and the radius of the fourth gear 952 is greater than the radius of the second gear 942.

The reduction gear 97 of the third reduction gear member 96 includes a fifth gear 961 which is engaged with the fourth gear 952, and the radius of the fifth gear 961 is smaller than that of the fourth gear 952.

The three reduction gear elements are arranged and matched to each other in such a way that the angular velocities of the first reduction gear element 94, the second reduction gear element 95 and the third reduction gear element 96 are sequentially increased, which is common knowledge of those skilled in the art and will not be described herein again.

Referring to fig. 12, one side of the winding disc 2 close to the slow speed gear box 1 is coaxially provided with an outer tooth slot 211, the transmission gear set 91 comprises a transmission gear 911 which is meshed with the outer tooth slot 211 and is rotationally connected with the slow speed gear box 1, a driving gear 912 which is coaxially arranged with the transmission gear 911 and is meshed with the first gear 941, and a rotating shaft 93, an installation groove body 14 which is used for accommodating the transmission gear 911 is arranged on the slow speed gear box 1 and is located on the outer side of the circumferential direction of the winding disc 2, the installation groove body 14 sinks to the outside of the outer side wall of the outer tooth slot 211 (as shown in fig. 6), an opening is arranged on one side of the outer tooth slot 211, and the transmission gear 911 is rotationally connected in.

Referring to fig. 12 and 13, it should be noted that the driving gear 912 in the transmission gear set 91 is installed in the same way as the reduction gear piece, but the driving gear 912 and the transmission gear 911 are not fixed relative to the rotating shaft at the same time, i.e. the driving gear 912 and the transmission gear 911 need to be able to rotate relative to each other. In the embodiment, the driving gear 912 extends downwards along the rotating shaft and is provided with an extension part 913 penetrating into the transmission gear 911, and the transmission gear 911 rotates relative to the extension part 913.

One side of the transmission gear 911 close to the driving gear 912 is integrally connected with a coaxially arranged pawl 914, one side of the driving gear 912 close to the transmission gear 911 is integrally connected with a coaxially arranged ratchet 915 which is matched with the pawl 914, when the wire take-up device takes up wires, the transmission gear 911 is synchronously rotated by the driving gear 912 through the mutual meshing of the pawl 914 and the ratchet 915, and when the wire take-up device takes out wires, the driving gear 912 and the transmission gear 911 are relatively moved.

Similarly, the pawl 914 can be fixedly coupled to the drive gear 912 and the ratchet teeth 915 correspondingly fixedly coupled to the drive gear 911.

In order to further increase the rotation speed, in the embodiment, the radius of the external tooth socket 211 is larger than that of the transmission gear 911, the radius of the driving gear 912 is larger than that of the transmission gear 911, and the radius of the first gear 941 is smaller than that of the driving gear 912.

When the power cord is wound up by the winding mechanism, the transmission gear 911 starts to rotate relative to the driving gear 912 due to the action of the pawl 914 and the ratchet 915, and the phenomenon similar to idling occurs, so that the speed of drawing out the power cord by the speed reducing mechanism 9 cannot be reduced, meanwhile, when the power cord is wound to the end part, the external tooth groove 211 stops instantly, the speed reducing gear piece in the speed reducing mechanism 9 tends to rotate continuously due to inertia, the arrangement of the ratchet 915 and the pawl 914 ensures that the speed reducing mechanism 9 cannot stop instantly along with the stop of the winding mechanism, but can continue to move for a period of time, and then stops slowly, thereby avoiding the damage of the speed reducing mechanism 9 caused by instant stop under the stress, improving the service life of the winding mechanism, and avoiding the damage of the speed reducing mechanism 9 caused by instant stop

Through the experiment, the take-up that this application mentioned can play the effect of retrieving the power cord at the uniform velocity under above-mentioned embodiment. Specifically, in the process of just rewinding the power cord, the exposed part of the power cord is long and heavy, but the coil spring 4 is wound up to the maximum deformation amount, so that the elastic deformation force is large, and the force required for switching to the rotation state by breaking the static state between the gears is large. With the continuation of the winding process, the exposed part of the power line is continuously reduced, the weight is continuously reduced, the elasticity of the coil spring 4 is also reduced, and the rotating speed of the winding disc 2 is reduced to a certain degree. Meanwhile, along with the continuous process of winding, the outer diameter of the power line wound on the winding disc 2 is continuously increased, so that the length of the power line which can be wound by rotating the winding disc 2 by one circle is longer, and the outer diameter of the power line is smaller in the process of rotating at a higher speed, so that the length of the power line which can be wound by rotating the winding disc 2 by one circle is smaller. Under the mutual restriction of the plurality of relevant factors, the uniform take-up of the take-up device in the take-up process can be realized.

It can thus be seen that the speed reduction mechanism 9 is provided for the purpose of increasing the load at the initial start-up state, the energy consumption during winding, and reducing and balancing the winding speed during winding. The corresponding arrangement mode of the three reduction gear pieces is only one preferable implementation mode for realizing the uniform wire rewinding process under the interaction of other adjacent structures, sizes and counterweights.

Therefore, in order to match with other structural changes, the number of the above-mentioned reduction gear members may be not limited to three, but may also be one, two, etc., and similarly, the plurality of mutually meshed reduction gears 97 may be implemented by increasing the angular velocity of the reduction gear members step by step to improve the reduction effect, or by changing the roughness of the friction surface of the reduction gear members, that is, by increasing the roughness to increase the friction force during rotation.

Similarly, the three reduction gear elements are engaged with each other in sequence, or a plurality of reduction gear elements are directly connected to the transmission gear set 91 in a transmission manner, which is an alternative to an easily conceivable technical means, and will not be described herein again.

The implementation principle of a take-up device in the embodiment of the application is as follows:

in the wire rewinding process, the wire rewinding disc rotates relative to the central shaft 12, so as to drive the first contact piece 7 and the second contact piece 8 to slide relative to the first slip ring 5 and the second slip ring 6, but due to the mutual contact between the contact 75 and the conductive ring 51, the current can be ensured to normally pass through, and the situations of line knotting and the like can not occur. Thereby facilitating the current to be drawn out through the lead hole 11 of the reduction gear case 1 for use.

Meanwhile, in the wire rewinding process, under the combined action of the speed reducing mechanism 9, the coil spring 4 and other components, the speed of power wire rewinding can be relatively constant, and the effect of uniform wire rewinding is achieved.

Example 2:

the embodiment 2 of the application discloses an electric hair dryer, referring to fig. 14, the electric hair dryer comprises a front shell 101 and a rear shell 102 which are fixed to each other, the front shell 101 and the rear shell 102 are both provided with a holding part 103, and the two holding parts 103 are spliced to form a holding handle for holding hands. A heating module 104, a fan module 105 and a wire-rewinding device 106 are sequentially arranged between the front shell 101 and the rear shell 102, and a power wire wound on the wire-rewinding device 106 penetrates between the two holding parts 103 to extend out of the hair dryer. The heating module 104 and the fan module 105 are fixed relatively, the limit cover 3 of the take-up 106 is fixed on the rear shell 102, and the speed-reducing gear box 1 of the take-up 106 is fixed on the shell of the fan module 105. The electric wires are led out through the lead holes 11 of the speed-reducing gear box 1 and connected to the motor of the fan module 105 and the heating wires of the heating module 104, respectively.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a take-up which characterized in that: the speed-reducing gearbox comprises a speed-reducing gearbox (1), a winding disc (2) and a limiting cover (3) which are sequentially arranged in the axial direction, wherein a central shaft (12) is axially arranged on the speed-reducing gearbox (1), the central shaft (12) axially penetrates through the winding disc (2) and is fixedly connected with the limiting cover (3), an accommodating cavity (22) is formed in one side, facing the limiting cover (3), of the winding disc (2), a coil spring (4) is arranged in the accommodating cavity (22), one end of the coil spring (4) is fixedly connected with the central shaft (12), the other end of the coil spring (4) is fixedly connected with the winding disc (2), and a speed-reducing mechanism (9) linked with the winding disc (2) is arranged in the speed-reducing gearbox (1);

reduction gears (9) constitute by drive gear group (91) and reduction gear group (92), drive gear group (91) and rolling dish (2) linkage, reduction gear group (92) comprise at least one reduction gear spare, reduction gear spare includes reduction gear (97) and the coaxial setting that links with drive gear group (91) and is used for rotating axis of rotation (93) that supports reduction gear (97), install in slow speed gear box (1) at the both ends of axis of rotation (93).

2. A take-up device as claimed in claim 1, wherein: the number of the reduction gear parts is three, the three reduction gear parts are defined as a first reduction gear part (94), a second reduction gear part (95) and a third reduction gear part (96), and the reduction gear (97) of the first reduction gear part (94) comprises a first gear (941) which is meshed with the transmission gear set (91) and a second gear (942) which is coaxially arranged with the first gear (941) and is fixed relatively;

the reduction gear (97) of the second reduction gear member (95) includes a third gear (951) engaged with the second gear (942) and a fourth gear (952) coaxially disposed with the third gear (951) and fixed relatively;

the reduction gear (97) of the third reduction gear member (96) includes a fifth gear (961) intermeshed with the fourth gear (952).

3. A take-up device as claimed in claim 2, wherein: the angular velocities of the first reduction gear piece (94), the second reduction gear piece (95) and the third reduction gear piece (96) when rotating are sequentially increased.

4. A take-up device as claimed in claim 1, wherein: an outer tooth groove (211) is formed in the outer periphery of the winding disc (2), and the transmission gear set (91) comprises a transmission gear (911) meshed with the outer tooth groove (211) of the winding disc (2) and a driving gear (912) which is coaxially arranged with the transmission gear (911) and is linked with the reduction gear set (92);

one side of the transmission gear (911) close to the driving gear (912) is fixedly connected with a pawl (914) which is coaxially arranged, and one side of the driving gear (912) close to the transmission gear (911) is fixedly connected with a ratchet (915) which is coaxially arranged and is matched with the pawl (914);

when the winding disc (2) winds up, the transmission gear (911) and the driving gear (912) synchronously rotate.

5. A take-up device as claimed in claim 1, wherein: one side of the winding disc (2) facing the speed-reducing gear box (1) is provided with a sliding ring installation cavity (29), a first sliding ring (5) and a second sliding ring (6) which are located in the sliding ring installation cavity (29) are coaxially installed on the winding disc (2), a wiring cavity is formed in the winding disc (2), the winding disc (2) comprises an upper connecting seat (23) and a lower connecting seat (24) which are coaxially and mutually fixed, a wiring opening (21) communicated with the wiring cavity is formed in the upper connecting seat (23), the first sliding ring (5) and the second sliding ring (6) are respectively provided with an insertion piece (53) penetrating into the wiring cavity, a first contact piece (7) abutted against the first sliding ring (5) and a second contact piece (8) abutted against the second sliding ring (6) are fixed on the speed-reducing gear box (1), and a contact piece (7) and a second contact piece (8) which are electrically connected with the first contact piece (7) and the second contact piece (8) are used for leading in a lead wire are arranged in the circumferential And a lead hole (11).

6. A take-up device as claimed in claim 5, wherein: the first slip ring (5) and the second slip ring (6) both comprise a conducting ring (51) and fixing pins (52), the fixing pins (52) are arranged on the conducting ring (51) in a plurality and are inserted into the winding disc (2), and the inserting pieces (53) are connected to the conducting ring (51) and inserted into the winding disc (2).

7. A take-up device as claimed in claim 5, wherein: the first contact piece (7) and the second contact piece (8) respectively comprise a fixing portion (71), a connecting portion (72), a contact portion (73) and a leading-out portion (74), the fixing portion (71) is attached to the speed reduction gear box (1), the leading-out portion (74) is inserted into the speed reduction gear box (1), the connecting portion (72) is fixed to the fixing portion (71) and is provided with two connecting portions, the distance between the two connecting portions (72) is gradually increased along the direction from the speed reduction gear box (1) to the winding disc (2) and always tends to be close to each other, and the contact portion (73) is arranged on the connecting portion (72) and used for being electrically connected with the first sliding ring (5)/the second sliding ring (6).

8. A take-up device as claimed in claim 7, wherein: the winding disc (2) is provided with a limiting partition plate (210) located between the first sliding ring (5) and the second sliding ring (6), and the contact part (73) of the first contact piece (7) and the contact part (73) of the second contact piece (8) are limited on two sides of the limiting partition plate (210) respectively.

9. A take-up device as claimed in claim 7, wherein: the contact part (73) is provided with a contact point (75) which is abutted with the first slip ring (5)/the second slip ring (6), and one side of the contact point (75) facing the first slip ring (5)/the second slip ring (6) is an arc spherical surface.

10. A hair drier is characterized in that: comprising a wire takeup device (106) according to any one of claims 1 to 9.