CN219839316U - Wire rod storage device - Google Patents

Abstract

The utility model discloses a wire rod storage device, comprising: the winding mechanism comprises a winding roller, an elastic piece used for resetting the winding roller and a winding shaft used for accumulating force for the elastic piece, wherein the head end of the winding shaft is positioned inside the shell and fixedly connected with the elastic piece, the winding shaft is rotationally connected with the shell, and the tail end of the winding shaft is further provided with a rotating part used for being screwed conveniently. According to the wire storage device disclosed by the utility model, the tail end of the winding shaft is provided with the rotating part, the winding shaft can be actively rotated through the rotating part, and the elastic piece drives the winding roller to rotate while the winding shaft rotates, so that the power storage of the elastic piece and the winding of the wire are rapidly realized, the assembly difficulty of a product is greatly reduced, the production efficiency of the product is improved, and the production cost is reduced.

Description

Wire rod storage device

Technical Field

The utility model relates to the field of electric appliances, in particular to a wire storage device.

Background

Wires such as data lines or power lines are used as necessary parts for charging or data transmission of daily electronic products, and gradually become indispensable accessories in daily life of everybody. For portable, current part wire rod is from having the receiver, is equipped with the wire winding roller that is used for twining the wire rod in the receiver, and the joint of wire rod is located the receiver outward. Normally can install the clockwork spring in the receiver, can pull out it when needs use the wire rod, the steering of winding roller makes clockwork spring hold the power when the wire rod is pulled out, when needs pack up the wire rod, triggers clockwork spring release elasticity and drives the winding roller and reset to with the wire rod winding withdraw to inside the casing. The wire storage box greatly facilitates the use and carrying of wires, and meanwhile, the wire storage box plays a role in protecting the wires to a certain extent, so that the service life of the wire storage box is prolonged.

However, the wire rod receiver of this structure has a winding axle of fixed connection with the casing, and this winding axle tail end and receiver's shell fixed connection, the head end passes winding roller and the inner fixed connection of clockwork spring. When the storage box is assembled, a worker is required to manually wind the wire on the surface of the winding roller, then the winding roller is rotated to manually store power for the spring, one hand pulls the wire connector after the power storage of the winding roller is completed, and the other hand buckles the shell.

Therefore, the existing wire storage box assembly process is severely dependent on manual work, the production efficiency is low, and meanwhile, the expensive labor cost is increased.

Disclosure of Invention

The utility model provides a wire rod storage device, which aims to solve the problem of low production efficiency of the existing wire rod storage box.

The utility model discloses a wire rod storage device, comprising:

the shell is used for accommodating the wire rod, and at least one end of the wire rod is positioned outside the accommodating device;

the winding mechanism comprises a winding roller capable of rotating around an axis, an elastic piece for resetting the winding roller, and a winding shaft for accumulating force for the elastic piece, wherein the head end of the winding shaft is positioned inside the shell and fixedly connected with the elastic piece, the tail end of the winding shaft is exposed out of the shell, the winding shaft is rotatably connected with the shell, and the tail end of the winding shaft is further provided with a rotating part for facilitating screwing.

As another improvement of the wire receiving device of the present utility model, the receiving device further includes a check mechanism for preventing the winding shaft from reversing after the elastic member is energized.

As another improvement of the wire receiving device of the present utility model, the non-return mechanism includes a driving member provided on the winding shaft, and a non-return member provided on the housing for preventing the driving member from being reversed, the driving member and the non-return member forming a ratchet mechanism.

As another improvement of the wire receiving device of the present utility model, the driving member is a pawl fixedly disposed at the tail end of the winding shaft, and the non-return member is a ratchet formed on the surface of the housing.

As another improvement of the wire receiving device, the ratchet wheel is a gear ring with gear teeth inside, and the ratchet wheel is matched with the gear ring.

As another improvement of the wire receiving device, the outer surface of the shell is provided with a groove for accommodating the pawls, the gear teeth are positioned on the inner wall surface of the groove, the tail end of the winding shaft is distributed with a plurality of pawls along the radial direction, and the pawls are embedded into the gear ring from the outer part of the shell.

As another improvement of the wire receiving device, the inner surface of the shell is provided with a groove for forming the ratchet wheel, the gear teeth are positioned on the inner wall surface of the groove, a plurality of pawls are distributed at the tail end of the winding shaft along the radial direction, and the pawls are embedded into the gear ring from the inside of the shell.

As another improvement of the wire receiving device of the present utility model, the rotating portion is formed on the winding shaft surface at a position where a pawl root portion is located on the driving member surface, and an end portion is bent in a reverse direction of the winding shaft.

As another improvement of the wire receiving device of the present utility model, the rotating member is a straight groove, a cross groove, a quincuncial groove, or an inner hexagonal groove formed at the center of the winding shaft end face.

As another improvement of the wire rod storage device, the non-return mechanism comprises a driving part arranged on the winding shaft and a non-return part arranged on the shell and used for preventing the driving part from reversing, the driving part is a fixed disc fixedly connected with the tail end of the winding shaft, the fixed disc covers the outer surface of the shell, a first helical tooth is arranged on the inner surface of the fixed disc, a second helical tooth matched with the first helical tooth is arranged on the outer surface of the shell, and the first helical tooth is in one-way engagement with the second helical tooth.

As another improvement of the wire rod storage device, the wire rod storage device further comprises a clamping mechanism for controlling the expansion and contraction amount of the wire rod, the clamping mechanism comprises an inner rail and an outer rail which are arranged on the end face of the winding roller, and a guide piece fixedly connected with the inner surface of the shell, the guide piece can move in the inner rail and the outer rail, and the guide piece can control the clamping and the resetting of the winding roller through switching between the inner rail and the outer rail and the position change.

As another improvement of the wire receiving device, the surface of the shell is also provided with a connecting plate, and the connecting plate is a metal plate with ferromagnetism.

According to the wire storage device disclosed by the utility model, the tail end of the winding shaft is provided with the rotating part, the winding shaft can be actively rotated through the rotating part, and the elastic piece drives the winding roller to rotate while the winding shaft rotates, so that the power storage of the elastic piece and the winding of the wire are rapidly realized, the assembly difficulty of a product is greatly reduced, the production efficiency of the product is improved, and the production cost is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of a wire receiving device according to an embodiment of the present utility model;

fig. 2 is an exploded view of a wire receiving device according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a winding shaft according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a check mechanism according to an embodiment of the present utility model;

fig. 5 is an exploded view of a wire receiving device according to another embodiment of the present utility model;

fig. 6 is a schematic exploded view of a wire receiving device according to another embodiment of the present utility model;

FIG. 7 is a schematic view showing a winding shaft according to still another embodiment of the present utility model;

FIG. 8 is a schematic structural view of a locking mechanism according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a rocker in an embodiment of the present utility model;

fig. 10 is a schematic structural view of a winding roller according to an embodiment of the present utility model.

Reference numerals and corresponding meanings referred to in this embodiment:

wire 1, upper shell 11, first shaft hole 110, groove 111, limit groove 112, lower shell 12;

winding roller 20, opening 200, second shaft hole 201, spring 21, winding shaft 22, clamping groove 220, rotating part 221, screw hole 222, convex part 223, wire spool 23, threading opening 24, wire clamping groove 25, wire passing groove 26;

pawl 31, teeth 320, ratchet 32;

partition wall 4, inner rail 41, first inner rail guide edge 411, second inner rail guide edge 412, outer rail 42, first outer rail guide edge 421, second outer rail guide edge 422, guide 43, rocker 430, guide shaft 431, guide block 44, locking groove 440;

and a connection plate 5.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present utility model. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, related operations of the present utility model have not been shown or described in the specification in order to avoid obscuring the core portions of the present utility model, and may be unnecessary to persons skilled in the art from a detailed description of the related operations, which may be presented in the description and general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the following description of the present embodiment, the direction of rotation is normal when the winding shaft 22 is set to store the power of the spring, and reverse is reverse.

As shown in fig. 1 and 2, the wire storage device disclosed in this embodiment includes: the wire rod device comprises a shell for accommodating the wire rod 1, wherein wire outlets are arranged at two ends of the shell, and connectors at two ends of the wire rod 1 are positioned outside the shell. The housing comprises an upper shell 11 and a lower shell 12 which are mutually buckled into a box body. A winding mechanism for winding the wire is arranged in the shell and comprises a winding roller 20, and the winding roller 20 can rotate around the axis of the winding roller. The winding mechanism further comprises an elastic member, in this example a spring 21, for resetting the winding roller 20. As shown in fig. 3, the winding mechanism further includes a winding shaft 22 for accumulating the force of the spring 21, the winding shaft 22 has a leading end located inside the housing and a trailing end located outside the housing, the leading end of the winding shaft 22 is provided with a clamping groove 220 for dividing the winding shaft along the axis, and an inner end of the spring 21 can be clamped into the clamping groove 220 to be fixedly connected with the winding shaft 22, and an outer end of the spring 21 is fixedly connected with an inner surface of the winding roller 20. Thus, the winding roller 20 rotates when the spring accumulates or releases the elastic force, and the winding roller 20 rotates to accumulate or release the elastic force of the spring 21. The tail end of the winding shaft 22 is also provided with a rotating part 221 which is convenient for screwing, the winding shaft 22 can be rotated by the rotating part 221, the winding shaft 22 can store the force of the spring 21 and drive the winding roller 20 to rotate, thus the wire 1 is wound and simultaneously is also finished into a hair

The bar 21 stores force. The output shaft of the servo motor is in butt joint with the rotating part 221, so that automatic winding and power accumulation of the spring 21 can be realized, manual operation of workers is not relied on, the production efficiency is improved, and the production cost is saved.

Further, as shown in fig. 4 and 3, the storage device further includes a check mechanism for preventing the winding shaft 22 from reversing after the power is accumulated by the spring 21, so that the winding shaft 22 can rotate only in the forward direction, i.e., in the direction in which the power is accumulated by the spring 21. The non-return mechanism comprises a driving member arranged on the end face of the winding shaft 22 and a non-return member arranged on the housing, and in the embodiment, the driving member and the non-return member form a ratchet mechanism, so that the driving member can only rotate in the forward direction (forward rotation) through the ratchet principle. The driving member is a pawl 31 fixedly disposed at the tail end of the winding shaft 22, and the non-return member is a ratchet 32 formed on the surface of the housing. Specifically, the pawl 31 is integrally formed with the winding shaft 22, and a first shaft hole 110 for the tail end of the winding shaft 22 to pass through is provided at the center of the upper case 11, and the pawl 31 is left on the outer surface of the upper case 11 after the winding shaft 22 passes through the first shaft hole 110 from the outside of the upper case 11. The outer surface of the upper case 11 is formed with a circular groove 111 centering on the first shaft hole 110, and a plurality of pawls 31 bent in the reverse direction are formed at the tail of the winding shaft 22, and the pawls 31 are spirally distributed around the winding shaft 22 as a whole. The pawl 31 is accommodated in the groove 111, and the depth of the groove 111 is equivalent to the thickness of the pawl 31 so that the side surface of the pawl 31 is flush with the surface of the upper case 11. The inner wall surface of the groove 111 is formed with a plurality of gear teeth 320, and the gear teeth 320 are distributed along the inner wall of the groove 111 in a circle, so that the inner wall of the groove 111 forms the ratchet 32 with the annular gear structure. When the winding shaft 22 rotates in the forward direction (the direction of the accumulation force of the spring 21), the teeth 320 are elastically deformed so that the pawls 31 jump one by one between the tooth grooves of the ratchet 32 at 320. When the spring 21 acts on the winding shaft 22 to receive the elastic force of the reverse rotation, the gear teeth 320 can be engaged with the pawls 31 to prevent the winding shaft 22 from reversing.

Further, the rotating portion 221 is disposed at the center of the tail end of the winding shaft 22, and the rotating portion 221 is specifically a straight groove, a cross groove, a plum blossom groove or a hexagon groove formed at the end of the winding shaft 22. When the storage box is assembled, the wire 1 can be wound by the power device and the power of the spring 21 can be stored, the connector matched with the rotating part 221 is fixed on the output shaft of the power device, and the output shaft of the power device can be driven by the servo motor to rotate, so that the automatic winding and the power storage of the spring 21 are realized. Of course, it is also possible to use a tool such as a screwdriver or a wrench adapted to the rotating portion 221 to perform manual winding and to store the power to the spring 21.

In the above embodiment, the tail end of the winding shaft 22 is disposed outside the housing, and in another embodiment of the present utility model, as shown in fig. 5 to 7, the tail end of the winding shaft 22 may also be located in the housing, and corresponding grooves 111 are formed on the inner surface of the upper housing 11. The depth of the groove 111 is equivalent to the thickness of the pawl 31 so that the side surface of the pawl 31 is flush with the inner surface of the upper case 11. The tail end of the winding shaft 22 is also provided with a convex part 223 which is matched with the first shaft hole 110, and the convex part 223 is a columnar body which can be inserted into the first shaft hole 110. The rotation portion 221 is formed on an end surface of the protrusion 223 such that a joint fitted to the rotation portion 221 can screw the winding shaft 22 through the first shaft hole 110.

Of course, in other embodiments of the present utility model, the driving member of the non-return mechanism is a fixed disc fixed at the tail end of the winding shaft 22, the fixed disc covers the outer surface of the upper shell 11 and is accommodated in the groove 111, the inner surface of the fixed disc is provided with a first helical tooth, the outer surface of the groove 111 is provided with a second helical tooth engaged with the first helical tooth, and the first helical tooth and the second helical tooth are unidirectionally engaged. When the winding shaft 22 rotates positively, the first helical teeth can jump and slide between tooth grooves of the second helical teeth, and when the winding shaft 22 receives reverse torsion under the action of the spring 21, the first helical teeth and the second helical teeth are meshed with each other, so that the fixed disc cannot rotate reversely, and the reverse rotation of the winding shaft 22 is avoided to have a non-return effect.

Further, the wire storage device further includes a locking mechanism for controlling the amount of expansion and contraction of the wire 1, and as shown in fig. 8, the locking mechanism includes an inner rail 41 and an outer rail 42 provided on the end surface of the wire winding roller 20, and a guide 43 fixedly connected to the inner surface of the upper case 11, and the guide 43 is movable in the inner rail 41 and the outer rail 42. Specifically, as shown in fig. 8 and 10, the winding roller 20 has an upper end on a side facing the upper case 11, a lower end on a side facing the lower case 12, the winding roller 20 has a hollow structure, the lower end thereof has an opening 200, the upper end has a closed structure, and a second shaft hole 201 is provided at the center of the upper end surface of the winding roller 20. The spring 21 is arranged inside the winding roller 20 through the opening 200, the outer end of the spring 21 is fixedly connected with the inner wall of the winding roller 20, and the head end of the winding shaft 22 is fixedly connected with the inner end of the spring 21 through the second shaft hole 201 by the first shaft hole 110 of the upper shell 11. The inner rail 41 and the outer rail 42 are recessed on the upper end face of the winding roller 20, wherein the outer rail 42 surrounds the periphery of the inner rail 41, and the second shaft hole 201 is located at the center of the inner rail 41. The partition wall 4 between the outer rail 42 and the inner rail 41 is provided with a rail changing gap, the rail changing gap is provided with a guide block 44, the head end of the guide block 44 extends into the inner rail 41, the tail end of the guide block 44 extends into the outer rail 42 obliquely outwards in the clockwise direction in fig. 5, a locking groove 440 concaved inwards in the reverse direction is formed at the tail end of the guide block 44, a first inner rail guide edge 411 extending inwards in a bending mode in the clockwise direction is arranged at the fracture of the partition wall 4 opposite to the locking groove 440, a second inner rail guide edge 412 is arranged at the side opposite to the inner wall of the inner rail 41 of the guide block 44, a first outer rail guide edge 421 is arranged at the side opposite to the outer wall of the inner rail 41 of the guide block 44, and a second outer rail guide edge 422 is arranged at the position, corresponding to the tail end of the guide block 43, of the outer rail 42.

As shown in fig. 9, a fan-shaped limit groove 112 is formed on the inner surface of the upper shell 11, a rocker 430 capable of swinging within the range of fan-shaped central angles is arranged in the limit groove 112, a guide shaft 431 perpendicular to the inner surface of the upper shell 11 is arranged at the root of the rocker 430, the guide shaft 431 is arranged at the narrow opening end of the limit groove 112, the root of the rocker 430 can swing along the direction parallel to the inner surface of the upper shell 11 by taking the guide shaft 431 as an axis, the guide member 43 is a columnar bulge arranged at the end of the rocker 430, the guide member 43 can freely move in the inner rail 41 and the outer rail 42, and the guide member 43 can be switched between the inner rail 41 and the outer rail 42 by swinging of the rocker 430.

When the wire 1 is pulled outward, the winding roller 20 is reversed (the forward rotation direction is clockwise in fig. 8), and the spring 21 accumulates force at this time, the guide 43 always slides in the outer rail 42 by the first outer rail guide edge 421 and the second outer rail guide edge 422. When the pulling of the wire 1 is stopped, the winding roller 20 starts to rotate forward by the spring 21, the wire 1 starts to retract by a small distance, and when the guide 43 enters the locking groove 440 as the winding roller 20 rotates forward, the winding roller 20 stops rotating, and the wire 1 is at rest. When the wire 1 is pulled for the second time, the winding roller 20 is reversed again, the guide piece 43 enters the inner rail 41 from the locking groove 440 under the guidance of the first inner rail guiding edge 411, and when the wire 1 is loosened, the winding roller 20 starts to rotate positively under the action of the spring 21, and the guide piece 43 always slides in the inner rail 41 under the guidance of the second inner rail guiding edge 412 until the wire 1 is fully retracted; when the wire 1 is pulled for the second time, the hand is not loosened, but the pulling is continued, the guide piece 43 is entered into the outer rail 42 by the first outer rail guide edge 421, and can be continuously pulled out until the guide piece 43 is again entered into the locking groove 440.

The pulling-out, clamping and retracting actions of the wire rod 1 can be controlled at any time according to the use requirement through the clamping mechanism, and the use is convenient and quick.

The two ends of the wire 1 in the embodiment are arranged outside the shell, and can be pulled out from the outlets at the two ends of the shell simultaneously and can be retracted simultaneously. To achieve this, as shown in fig. 8 and 10, a spool 23 is further provided around the spool 20 at a central position thereof, and the spool 23 is perpendicular to the spool 20 to divide the spool 20 into two parts. The side surface of the winding roller 20 is provided with at least two threading openings 24, and the winding roller 20 is internally provided with a wire clamping groove 25 for fixing the middle section of the wire 1. The wire spool 23 is also provided with a wire passing groove 26 for the middle section of the wire 1 to pass through from one side to the other side, and the wire passing groove 23 is opposite to one of the wire passing openings 24 and is mutually communicated. One end of the middle section of the wire 1 can be wound on the outer surface of the winding roller 20 positioned on one side of the winding disc 23 after being penetrated out of the threading opening 24, and the wire at the other end of the middle section extends to the other side of the winding disc 23 after passing through the threading opening 24 and the threading groove 26, and is wound on the surface of the winding roller 20 along the same direction with the wire at the other side.

As shown in fig. 3, the front end of the winding shaft 22 is further provided with a screw hole 222, and the front end of the winding shaft 22 is fixed by screwing a screw penetrating from the outside of the lower case 12 into the screw hole 222. The wire rod storage device disclosed in this embodiment is as follows in the assembly process: firstly, a spring 21 is arranged in a winding roller 20, then the head end of a winding shaft 22 passes through an upper shell 11 and is fixed with the inner end of the spring 21, then the middle section of a wire 1 is clamped into a wire clamping groove 25 of the winding roller 20, the wire at one end of the middle section is arranged on one side of a wire spool 23, the wire at the other end of the middle section is arranged on the other side of the wire spool 23, and finally the upper shell 11 and the lower shell 12 are buckled. The buckled shell is placed on a workbench, the output shaft of the winding power device is in butt joint with the rotating part 221, and the output shaft is driven by a servo motor to rotate, so that the simultaneous automatic completion of wire winding and power accumulation of the spring 21 is realized. The number of turns of the output shaft of the corresponding servo motor is preset according to the length of the wire rod and the elastic coefficient of the spring, so that the tightness degree of factory setting of the spring can be unified, and various parameters of a product are completely unified.

Further, as shown in fig. 2, the surface of the upper shell 11 is further provided with a connecting plate 5, and the connecting plate 5 is a metal plate with ferromagnetism, so that the wire containing device can be adsorbed on the surface of a magnetic object through magnetic attraction. For example, the magnetic material is adsorbed on the surface of the vehicle-mounted magnetic fixing seat, so that the magnetic material plays roles of supporting and convenient storage. The magnetic base can be adsorbed with a wireless charger with a magnetic base, so that the magnetic base can be conveniently used and stored simultaneously.

The wire rod containing device disclosed by the embodiment of the utility model can be used as an auxiliary product for containing the wire rod, and at the moment, both ends of the wire rod are positioned outside the shell; the rechargeable battery can be fixed in the shell, so that the whole storage device is used as a mobile power supply at the same time, one end of the wire is positioned outside the shell, and the other end of the wire is electrically connected with the rechargeable battery; the wire storage device disclosed in this embodiment can be also applied to other products requiring wire connection, so that the products have the storage function of wires or power wires. The wires in this example may be data lines, power lines, signal lines, etc.

According to the wire storage device disclosed by the utility model, the tail end of the winding shaft is provided with the rotating part, the winding shaft can be actively rotated through the rotating part, and the elastic piece drives the winding roller to rotate while the winding shaft rotates, so that the power storage of the elastic piece and the winding of the wire are rapidly realized, the assembly difficulty of a product is greatly reduced, the production efficiency of the product is improved, and the production cost is reduced.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and it is not intended that the utility model be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the inventive concept.

Claims (12)

1. A wire storage device, comprising:

the shell is used for accommodating the wire rod, and at least one end of the wire rod is positioned outside the accommodating device;

the winding mechanism comprises a winding roller capable of rotating around an axis, an elastic piece for resetting the winding roller, and a winding shaft for accumulating force for the elastic piece, wherein the head end of the winding shaft is positioned inside the shell and fixedly connected with the elastic piece, the winding shaft is rotationally connected with the shell, and the tail end of the winding shaft is further provided with a rotating part for screwing through the shell.

2. The wire receiving device of claim 1, further comprising a check mechanism for preventing reverse rotation of the winding shaft.

3. The wire receiving device of claim 2, wherein the non-return mechanism includes a driving member disposed on the winding shaft and a non-return member disposed on the housing for limiting the reverse rotation of the driving member, the driving member and the non-return member forming a ratchet mechanism.

4. The wire housing device of claim 3, wherein the driving member is a pawl fixedly disposed at a tail end of the winding shaft, and the non-return member is a ratchet formed on a surface of the housing.

5. The wire receiving device of claim 4, wherein the ratchet is a gear ring with gear teeth on the inside, the ratchet being adapted to the gear ring.

6. The wire receiving device according to claim 5, wherein the housing outer surface is provided with a groove for forming the ratchet, the gear teeth are located on the inner wall surface of the groove, the winding shaft tail end is radially distributed with a plurality of pawls, and the pawls are embedded into the gear ring from the housing outer portion.

7. The wire receiving device according to claim 5, wherein the housing inner surface is provided with a groove for forming the ratchet, the gear teeth are located on the groove inner wall surface, the winding shaft tail end is radially distributed with a plurality of pawls, and the pawls are embedded into the gear ring from the housing interior.

8. The wire housing device according to claim 6 or 7, wherein the pawl root is formed on the winding shaft surface, and an end portion is bent in a reverse direction of the winding shaft.

9. The wire receiving device according to any one of claims 1 to 6, wherein the rotating portion is a straight groove, a cross groove, a quincuncial groove, or an inner hexagonal groove formed at the center of the winding shaft end face.

10. The wire rod storage device of claim 2, wherein the non-return mechanism comprises a driving part arranged on the winding shaft and a non-return part arranged on the shell and used for preventing the driving part from reversing, the driving part is a fixed disc fixedly connected with the tail end of the winding shaft, the fixed disc covers the outer surface of the shell, a first helical tooth is arranged on the inner surface of the fixed disc, a second helical tooth matched with the first helical tooth is arranged on the outer surface of the shell, and the first helical tooth is in one-way engagement with the second helical tooth.

11. The wire storage device according to claim 1, further comprising a locking mechanism for controlling the amount of expansion and contraction of the wire, wherein the locking mechanism comprises an inner rail and an outer rail provided on the end surface of the winding roller, and a guide member fixedly connected to the housing, the guide member being movable in the inner rail and the outer rail, and the guide member being capable of controlling locking and resetting of the winding roller by changing positions in the inner rail and the outer rail.

12. The wire storage device according to claim 1, wherein the housing surface is further provided with a connection plate, and the connection plate is a metal plate having ferromagnetism.