CN211240063U - Manual wired earphone storage device - Google Patents

Manual wired earphone storage device Download PDF

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Publication number
CN211240063U
CN211240063U CN202020289140.6U CN202020289140U CN211240063U CN 211240063 U CN211240063 U CN 211240063U CN 202020289140 U CN202020289140 U CN 202020289140U CN 211240063 U CN211240063 U CN 211240063U
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CN
China
Prior art keywords
gear
straight
double
shell
pressing
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Active
Application number
CN202020289140.6U
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Chinese (zh)
Inventor
徐雨生
成焕波
张大卫
徐明诚
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Nanjing Institute of Technology
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Nanjing Institute of Technology
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Priority to CN202020289140.6U priority Critical patent/CN211240063U/en
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Publication of CN211240063U publication Critical patent/CN211240063U/en
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Abstract

The utility model discloses a manual formula wired earphone storage device, its appearance is the cylinder, comprises shell, pressing nail, one-way gear drive mechanism and storage disc. The pressing key is positioned on one end face of the device, the lower surface of the pressing nail is provided with the straight-line rack, the straight-line rack is meshed with the straight-tooth cylindrical gear of the one-way gear transmission mechanism, a rotating shaft of an idler gear in the gear transmission mechanism can slide in the arc groove opening according to different steering directions, the breaking of a gear transmission chain is realized, the one-way transmission effect is achieved, the double-layer straight gear of the one-way gear transmission mechanism is meshed with the straight gear in the storage disc, and the storage disc can rotate by taking the axis of the device as the rotating shaft. During storage, the earphone wire is folded in half and hooked on the hook of the storage disc, the pressing nail on the end face is repeatedly pressed for a plurality of times, the storage disc is driven to rotate around the axis of the storage disc in an one-way intermittent mode under the cooperation of the one-way gear transmission mechanism, and storage of the earphone wire can be achieved.

Description

Manual wired earphone storage device
Technical Field
The utility model belongs to the technical field of peripheral product of electronic equipment is accomodate, concretely relates to wired earphone storage device of manual formula.
Background
At present arrangement and take in wired earphone's instrument theory of operation very single, mostly for using manual winding mode to wind the earphone cord on a circular device to add appropriate safeguard measure, though solved and accomodate the save problem after accomplishing, whole process of accomodating is comparatively loaded down with trivial details, and it is slower to accomodate the speed, takes inconvenient yet. For example, chinese utility model publication No. CN208046865U discloses an earphone storage device, the device can be better protects headphone plug and earplug, nevertheless must open annular protection part earlier when using, insert the headphone plug in fixed hole, the manual winding mode round of reuse twines the earphone cord in the annular cavity round by round, closes protection part at last, though prevented effectively that the earphone cord is loose after accomodating and finishing like this, nevertheless take time hard when accomodating, take the inconvenience.
In addition, the earphone line and the storage device are bound, namely, the storage device is additionally arranged on the earphone line, so that the earphone line and the storage device are integrated, for example, the utility model discloses a Chinese utility model with the publication number of CN109348332A, the torsional spring is adopted to provide power, the trouble of manual winding is avoided, but the main deficiency is that a storage box with a certain volume is additionally arranged on the earphone line, the advantages of light weight and small volume of wired earphones are destroyed, and great inconvenience is brought to the use of the earphones.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, a manual formula wired earphone storage device is provided.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:
a manual wired headset storage device, wherein: the pressing nail is characterized by comprising an upper shell and a lower shell, wherein the upper shell and the lower shell form a hollow shell with an opening, a first through hole is formed in the middle of the lower shell, a pressing nail is inserted into the first through hole, a pressing key is integrally formed on one side, close to the lower shell, of the pressing nail, the pressing key is abutted against the inner side of the first through hole, a spring is connected to one side, close to the upper shell, of the pressing nail, a positioning sleeve is installed at the position, corresponding to the position of the pressing nail, of the upper shell, one side, far away from the pressing nail, of the spring is fixed in the positioning sleeve, and the pressing nail can slide in the positioning;
a straight gear and a containing disc are sequentially sleeved outside the positioning sleeve from inside to outside, one side of the containing disc, which is far away from the positioning sleeve, abuts against the inner side of the lower shell, the straight gear is fixed on the containing disc, a protective shell concentric with the lower shell is installed inside the containing disc, the protective shell is fixedly installed on an annular protrusion of the lower shell, and a one-way gear transmission mechanism is installed inside the protective shell;
according to the earphone, the nail lower fixed surface of pressing installs straight rack, one end gear connection spur gear of one-way gear drive, other end gear connection straight rack, one-way gear drive realizes pressing the key through the straight rack that slides and drives the storage disc operation when being close to the removal of last shell direction, stop working when pressing the key to keeping away from last shell direction, install the couple of fixed earphone cotton rope on the storage disc lateral wall, the crotch one side of couple is towards one side of storage disc forward rotation.
In order to optimize the technical scheme, the specific measures adopted further comprise:
foretell protective housing is enclosed by last protective housing and lower protective housing that the lateral wall has a plurality of breachs and forms, the breach all satisfies the normal rotation of double-deck crown gear, idler gear and double-deck spur gear, lower protective housing fixed mounting is on the annular of shell is protruding down, the fixed suit of going up the protective housing is in the spur gear outside, go up protective housing and lower protective housing symmetry and be provided with arc wall and a plurality of shaft hole.
Foretell one-way gear drive mechanism is including the straight-tooth spur gear, double-deck crown gear, idler gear and the double-deck straight-tooth gear of gear connection in proper order, all interlude has the pivot in the middle of straight-tooth spur gear, double-deck crown gear, idler gear and the double-deck straight-tooth gear, the pivot both ends in the middle of the idler gear insert the arc wall respectively in, the pivot both ends in the middle of double-deck crown gear and the double-deck straight-tooth gear insert the axle hole respectively.
Foretell double-deck crown gear includes upper crown gear and lower floor's straight-tooth gear, straight-tooth spur gear and upper crown gear meshing, lower floor's straight-tooth gear and idler gear meshing, double-deck straight-tooth gear includes pinion and gear wheel, idler gear and pinion meshing, gear wheel and straight-tooth gear meshing, still install the support in taking the shaft hole on the protective housing, the last one end that the pivot of straight-tooth spur gear is close to the support inserts in the shaft hole of support.
When the pressing key moves towards the direction of being close to the upper shell, the straight-line rack drives the straight-tooth spur gear to rotate in the forward direction, the idler gear is driven by the double-layer crown gear to be close to the double-layer straight-tooth gear and to be meshed with the pinion in the double-layer straight-tooth gear, when the pressing key moves towards the direction of being far away from the upper shell, the straight-line rack drives the straight-tooth spur gear to rotate in the reverse direction, and the idler gear is driven by the double-layer crown gear to be far away from the double-layer straight-tooth gear until the idler gear is separated from.
Foretell first through-hole is big-end-up's forty-five degrees inclined plane through-hole, press the key unanimous with first through-hole size shape, the second through-hole has been seted up to the protective housing down, the diameter of second through-hole is greater than the cross-sectional area of pressing nail and straight row rack, is less than the diameter of pressing the key, go up the protective housing and seted up the third through-hole, the diameter of third through-hole is greater than the addendum circle diameter of straight-teeth gear.
The guide rail is arranged in the positioning sleeve, and the pressing nail can slide on the guide rail.
The utility model has the advantages that:
the utility model relates to a wired earphone storage device of manual formula through press device and a plurality of gear cooperation, will press the sharp operation of nail and turn into rotary motion, the setting of idler gear and arc wall simultaneously for the gear turns to and becomes unidirectional rotation, thereby easily accomodates the earphone, and when taking the earphone, the hand is held between the fingers the earphone tip and is pulled out hard, has convenient characteristics such as accomodating, take the convenience.
Drawings
Fig. 1 is an overall appearance diagram of the present invention;
fig. 2 is a front view of the device of the present invention;
FIG. 3 is a plan view of the internal structure of the unidirectional gear transmission mechanism of the present invention;
FIG. 4 is a three-dimensional view of the internal structure of the one-way gear transmission mechanism of the present invention;
FIG. 5 is a view of the structure of the pressing nail of the present invention;
fig. 6 is a schematic structural view of the storage tray of the present invention;
fig. 7 is a half-section view of the present invention.
The reference signs are: the device comprises an upper shell 1, a lower shell 2, a pressing nail 3, a pressing key 4, a spring 5, a positioning sleeve 6, a storage disc 7, a straight gear 8, a protective shell 9, an upper protective shell 9-1, a lower protective shell 9-2, an annular protrusion 10, a one-way gear transmission mechanism 11, a straight spur gear 11-1, a double-layer crown gear 11-2, an idler gear 11-3, a double-layer straight gear 11-4, a straight-row rack 12, a hook 13 and a support 14.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention relates to a manual type storage device for wired earphone, which comprises an upper housing 1, a lower housing 2, a pressing nail 3, a spring 5, a storage plate 7, and a one-way gear transmission mechanism 11.
As shown in fig. 3 and 4, the one-way gear transmission mechanism 11 is a core part of the whole device, the one-way gear transmission mechanism 11 is installed and fixed in the protective housing 9, the protective housing 9 comprises an upper protective housing 9-1 and a lower protective housing 9-2, wherein the upper protective housing 9-1 and the lower protective housing 9-2 are buckled to form a cylinder shape with a cavity, the upper protective housing 9-1 and the lower protective housing 9-2 are connected by screws, a reinforcing rib and a rectangular notch for fixing a support 14 are arranged in the upper protective housing, a shaft hole for fixing a double-layer crown gear 11-2 rotating shaft and a shaft hole for fixing a double-layer spur gear 11-4 rotating shaft and an arc-shaped groove for accommodating an idler gear 11-3 rotating shaft are arranged in the middle of the lower protective housing 9-2, a second through hole is arranged in the middle of the lower protective housing, the diameter of the second through hole is, a third through hole is arranged in the middle of the upper protective shell 9-1, the diameter of the through hole is larger than the addendum circle diameter of a straight gear (8) on the storage disc (7), the one-way gear transmission mechanism 11 comprises a straight spur gear 11-1, a double-layer crown gear 11-2, an idler gear 11-3 and a double-layer straight gear 11-4 which are sequentially connected through gears, the gears are sequentially arranged at the outer edge of a cavity formed by the upper protective shell 9-1 and the lower protective shell 9-2, a support 14 is arranged in a rectangular notch at the corresponding position of the upper protective shell 9-1 and the lower protective shell 9-2 and is clamped and positioned by the upper protective shell 9-1 and the lower protective shell 9-2, the straight spur gear 11-1 is arranged on the support 14 in a cantilever structure, namely the straight spur gear 11-1 and the support 14 are connected through a rotating shaft, the straight-tooth cylindrical gear 11-1 and a rotating shaft thereof are fixed in an interference fit manner, the rotating shaft is inserted into a shaft hole of the support 14, the axis of the straight-tooth cylindrical gear 11-1 is vertical to the axis of the cylindrical protective shell 9 with the cavity and serves as an input gear of the one-way gear transmission mechanism 11, the rotating shafts of the other gears are parallel to the axis of the protective shell 9, and the installation position of the rotating shafts of the other gears is not interfered with the second through hole in the middle of the protective shell 9, so that the pressing nail 3 can penetrate through the second through hole and the third through hole.
In the embodiment shown in fig. 3 and 4, the installation positions of the gears are as follows: one end of the spur gear 11-1 far away from the support 14 is meshed with a crown gear in the double-layer crown gear 11-2. A spur gear in the double-layer crown gear 11-2 is fixedly connected with the crown gear and is positioned between the crown gear and the upper protective shell 9-1; a rotating shaft of the idle gear 11-3 is positioned in arc grooves at corresponding positions of the upper protective shell and the lower protective shell 9-1 and 9-2, and the arc grooves take the position of a shaft hole of the double-layer crown gear 11-2 as a circle center, so that the idle gear 11-3 and a straight gear in the double-layer crown gear 11-2 are always in a meshing relationship; a bull gear in the double-layer spur gear 11-4 is fixedly connected with a pinion and is positioned in the middle of the pinion and the upper protective shell 9-1, and the bull gear is used as an output gear for outputting the torque of the one-way gear transmission mechanism 11.
In the embodiment shown in fig. 3 and 4, the one-way gear transmission mechanism 4 works according to the following principle: when the double-layer crown gear 11-2 rotates forwards, the idle gear 11-3 moves towards one end, close to the double-layer straight gear 11-4, of the arc groove under the action of the lower-layer straight gear of the double-layer crown gear 11-2 until the idle gear 11-3 is meshed with the small gear in the double-layer straight gear 11-4, at the moment, a transmission chain of the gear transmission mechanism 11 is in a through state, and the large gear in the double-layer straight gear 11-4 serves as an output gear to transmit torque to the outside; when the double-layer crown gear 11-2 rotates reversely, the idle gear 11-3 slides to one end, away from the double-layer straight gear 11-4, of the arc groove under the action of the lower-layer straight gear of the double-layer crown gear 11-2 until the idle gear 11-3 is separated from the pinion in the double-layer straight gear 11-4, and a transmission chain of the gear transmission mechanism 11 is broken at the idle gear 11-3, so that the reverse rotation of the double-layer straight gear 11-4 cannot be caused.
In the embodiment shown in fig. 3 and 4, the spur gear 11-1: m is 0.5, z is 10, l is 11mm, the upper crown of the double-layer crown gear 11-2: m is 0.5, z is 22, lower spur gear of the double-layer crown gear 11-2: m 0.5, z 32, l 1.5mm, idler gear 11-3: m 0.5, z 30, l 1.5mm, pinion of the double spur gear 11-4: m is 0.5, z is 12, l is 5mm, and the big gear of the double-layer spur gear 11-4: m 1, z 16, l 1.5 mm.
As shown in figure 5, the structure of the pressing nail 3 is composed of a straight-line rack 12, a cylindrical nail column and a pressing key 4, wherein the diameter of the nail column is less than 5mm, the straight-line rack 12 with the modulus of 0.5 and the number of teeth of 8 is fixed on the nail column, the pressing key 4 is circular, the diameter is not more than 35mm, and the edge of the pressing key is chamfered by 45 degrees.
As shown in fig. 6, the storage disc 7 is cylindrical, the inner diameter is greater than the outer diameter of the protective shell, radial annular convex edges are arranged at two ends of the storage disc 7, a spur gear 8 coaxial with the storage disc 7 is fixedly connected to the inner side of one end face of the storage disc 7, the modulus of the spur gear 8 is 1, the number of teeth is 16, the thickness is 4mm, a hole with the diameter of 10mm is formed in the gear, a second through hole is formed in the lower protective shell 9-2, the diameter of the second through hole is greater than the cross sectional area of the pressing nail 3 and the straight-row rack 12, a third through hole is formed in the upper protective shell 9-1, the diameter of the through hole is greater than the diameter of the tooth crest circle of the spur gear 8, a hook 13 for fixing a thread rope is arranged on the outer side wall of the storage disc 7, and one side of a hook of.
As shown in fig. 7, the upper housing 1 and the lower housing 2 support and position various parts of the device, wherein the upper housing 1 and the lower housing 2 have different structures, the upper housing 1 is provided with a first through hole with the same size as the pressing key 4, the first through hole is provided with a 45-degree chamfer and has a limiting function on the pressing nail 3, a ring of annular protrusion serving as a reinforcing rib is arranged around the first through hole, the annular protrusion is positioned inside the upper housing 1 and has the same diameter as the outer diameter of the protective shell, the annular protrusion fixes the gear transmission mechanism 11 through interference fit, a positioning sleeve 6 is arranged at the middle position inside the lower housing 2, a guide rail is arranged in the positioning sleeve, the outer diameter of the positioning sleeve is less than 9.5mm, the length of the positioning sleeve is 11mm, and the pressing nail 3 can slide on the guide rail.
In the embodiment shown in fig. 7, the installation positions of the parts are: the pressing nail 3 penetrates through a coaxial hole in the middle of the lower protective shell, the pressing key 4 is positioned on one side of the lower protective shell 9-2, meanwhile, the straight-line rack 12 is meshed with the straight toothed spur gear 11-1 in the one-way gear transmission mechanism 11, one side of the lower protective shell 9-2 is fixed on the annular protrusion on the inner side of the lower shell 2 in an interference fit mode, the pressing key 4 is positioned between the lower protective shell 9-2 and the lower shell 2, when the pressing key 4 moves rightwards, the limiting effect of a 45-degree chamfer angle in the hole of the lower shell 2 is received, one side, far away from the pressing key, of the pressing nail 3 is fixedly connected with a spring 5, one end, far away from the pressing key 4, of the spring 5 is fixedly arranged in a positioning sleeve 6, the elastic force of the spring acts on the pressing nail 3, the one-way gear transmission mechanism 11 is arranged inside a storage disc 7, and simultaneously, the straight toothed gear 8 on the end face of the, and is engaged with a large gear of a double-layer straight gear 11-4 of a one-way gear transmission mechanism 11, the upper shell 1 and the lower shell 2 are bonded by glue, and the storage disc 7 is positioned between the two shells.
The working process of the device is as follows: when external force acts on the pressing key 4, the pressing key 4 moves towards one side close to the protective shell, so that the straight-line rack 12 on the lower surface of the pressing nail 3 is meshed with the straight-tooth cylindrical gear 11-1, then the straight-tooth gear 8 is driven to rotate through the double-layer crown gear 11-2, the idler gear 11-3 and the double-layer straight-tooth gear 11-4 in sequence, the storage disc 7 is driven to rotate, when the external force disappears, the pressing nail 3 moves reversely under the action of the elastic force of the spring 5, a transmission chain in the one-way gear transmission mechanism 11 is broken, the storage disc 7 cannot rotate reversely, and therefore reciprocating is achieved, and storage of earphone wires is finally achieved.
The use method of the device in the embodiment comprises the following steps:
first, the earphone cord is folded in half and straightened, the upper case 1 and the lower case 2 are held by the right hand with the pressing key 4 facing the user, the folded end is hooked on the hook 13 of the storage tray 7, and the pressing key 4 is pressed several times by the thumb until the earphone cord is completely wound around the storage tray 7.
When the earphone is taken, the upper shell 1 and the lower shell 2 are held by the right hand, and the end part of the earphone is pinched by the left hand and is pulled out forcefully.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims (7)

1. The utility model provides a manual formula wired earphone storage device which characterized in that: the pressing nail fixing device comprises an upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) form a hollow shell with an opening, a first through hole is formed in the middle of the lower shell (2), a pressing nail (3) is inserted into the first through hole, a pressing key (4) is integrally formed on one side, close to the lower shell (2), of the pressing nail (3), the pressing key (4) abuts against the inner side of the first through hole, a spring (5) is connected to one side, close to the upper shell (1), of the pressing nail (3), a positioning sleeve (6) is installed on the position, corresponding to the pressing nail (3), of the upper shell (1), one side, far away from the pressing nail (3), of the spring (5) is fixed in the positioning sleeve (6), and the pressing nail (3) can slide in the positioning sleeve (6);
the outer side of the positioning sleeve (6) is sequentially sleeved with a straight gear (8) and a storage disc (7) from inside to outside, one side, away from the positioning sleeve (6), of the storage disc (7) abuts against the inner side of the lower shell (2), the straight gear (8) is fixed on the storage disc (7), a protective shell (9) concentric with the lower shell (2) is installed inside the storage disc (7), the protective shell (9) is fixedly installed on an annular protrusion (10) of the lower shell (2), and a one-way gear transmission mechanism (11) is installed inside the protective shell (9);
according to nail (3) lower fixed surface install straight rack (12), one-way gear drive (11) one end gear connection straight-teeth gear (8), straight rack (12) are arranged to other end gear connection, one-way gear drive (11) realize through sliding straight rack (12) that press key (4) to drive storage disc (7) operation when being close to last shell (1) direction removal, stop working when pressing key (4) to keeping away from last shell (1) direction, install couple (13) of fixed earphone cotton rope on storage disc (7) lateral wall, the crotch one side of couple (13) is towards one side of storage disc (7) forward rotation.
2. A manual wired earphone storage device according to claim 1, characterized in that: the protective housing (9) is formed by encircling an upper protective housing (9-1) and a lower protective housing (9-2) with a plurality of notches in the side wall, the notches meet normal rotation of a double-layer crown gear (11-2), an idler gear (11-3) and a double-layer straight gear (11-4), the lower protective housing (9-2) is fixedly installed on an annular protrusion (10) of the lower housing (2), the upper protective housing (9-1) is fixedly sleeved outside the straight gear (8), and an arc-shaped groove and a plurality of shaft holes are symmetrically formed in the upper protective housing and the lower protective housing.
3. A manual wired earphone storage device according to claim 2, characterized in that: the one-way gear transmission mechanism (11) comprises a straight-tooth cylindrical gear (11-1), a double-layer crown gear (11-2), an idler gear (11-3) and a double-layer straight gear (11-4) which are sequentially connected through gears, rotating shafts are inserted in the middles of the straight-tooth cylindrical gear (11-1), the double-layer crown gear (11-2), the idler gear (11-3) and the double-layer straight gear (11-4), two ends of the rotating shaft in the middle of the idler gear (11-3) are respectively inserted into arc grooves, and two ends of the rotating shaft in the middle of the double-layer crown gear (11-2) and the double-layer straight gear (11-4) are respectively inserted into the shaft holes.
4. A manual wired earphone storage device according to claim 3, characterized in that: double-deck crown gear (11-2) include upper crown gear and lower floor's straight-tooth gear, straight-tooth spur gear (11-1) and upper crown gear meshing, lower floor's straight-tooth gear and idler gear (11-3) meshing, double-deck straight-tooth gear (11-4) include pinion and gear wheel, idler gear (11-3) and pinion meshing, gear wheel and straight-tooth gear (8) meshing, still install support (14) in taking the shaft hole on protective housing (9), the one end that the pivot on straight-tooth spur gear (11-1) is close to support (14) inserts in the shaft hole of support (14).
5. The manual wired earphone storage device according to claim 4, wherein: when the pressing key (4) moves towards the direction close to the upper shell (1), the straight-line rack (12) drives the straight-tooth cylindrical gear (11-1) to rotate in the forward direction, the idler gear (11-3) is driven by the double-layer crown gear (11-2) to approach the double-layer straight-tooth gear (11-4) and be meshed with the pinion in the double-layer straight-tooth gear (11-4), when the pressing key (4) moves towards the direction far away from the upper shell (1), the straight-line rack (12) drives the straight-tooth cylindrical gear (11-1) to rotate in the reverse direction, and the idler gear (11-3) is driven by the double-layer crown gear (11-2) to keep away from the double-layer straight-tooth gear (11-4) until the idler gear (11-3) is separated from the pinion in the double-layer straight-tooth gear (11-4).
6. A manual wired earphone storage device according to claim 5, characterized in that: first through-hole is big-end-up forty-five degrees inclined plane through-hole, press key (4) unanimous with first through-hole size shape, the second through-hole has been seted up in lower protective housing (9-2), the diameter of second through-hole is greater than the cross-sectional area of pressing nail (3) and straight row rack (12), is less than the diameter of pressing the key, the third through-hole has been seted up in upper protective housing (9-1), the diameter of third through-hole is greater than the addendum circle diameter of straight-teeth gear (8).
7. A manual wired earphone storage device according to claim 5, characterized in that: the positioning sleeve (6) is internally provided with a guide rail, and the pressing nail (3) can slide on the guide rail.
CN202020289140.6U 2020-03-10 2020-03-10 Manual wired earphone storage device Active CN211240063U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020289140.6U CN211240063U (en) 2020-03-10 2020-03-10 Manual wired earphone storage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020289140.6U CN211240063U (en) 2020-03-10 2020-03-10 Manual wired earphone storage device

Publications (1)

Publication Number Publication Date
CN211240063U true CN211240063U (en) 2020-08-11

Family

ID=71941711

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020289140.6U Active CN211240063U (en) 2020-03-10 2020-03-10 Manual wired earphone storage device

Country Status (1)

Country Link
CN (1) CN211240063U (en)

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