CN210314770U - Wire-breaking prevention device for empty ring - Google Patents
Wire-breaking prevention device for empty ring Download PDFInfo
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- CN210314770U CN210314770U CN201920818199.7U CN201920818199U CN210314770U CN 210314770 U CN210314770 U CN 210314770U CN 201920818199 U CN201920818199 U CN 201920818199U CN 210314770 U CN210314770 U CN 210314770U
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Abstract
The utility model relates to an empty ring anti-broken device, which comprises a mounting plate, a first thread loosening device, a first clamping plate, a first elastic piece and a driving mechanism, wherein the first clamping plate is arranged on the mounting plate and is positioned between the mounting plate and a thread pressing part, a first strip-shaped hole is arranged at the position corresponding to the first thread loosening device, and the first clamping plate can move along the length direction of the first strip-shaped hole relative to the first thread loosening device; one end of the first clamping plate, which is positioned in the first strip-shaped hole, is provided with a supporting part which can enable the line pressing part to move in the direction away from the first clamping plate; the first elastic piece always has the tendency of enabling the wire pressing part to move towards the first clamping plate; the driving mechanism is arranged on the mounting plate, and the power output end of the driving mechanism is connected with the first clamping plate so as to drive the supporting part of the first clamping plate to move along the length direction of the first strip-shaped hole and enable the crimping part to be pressed or separated from the first clamping plate. The loosening or pressing of each first loosening device can be realized only through one driving mechanism, and then the working efficiency is improved.
Description
Technical Field
The utility model relates to a belong to weaving clothing equipment technical field, concretely relates to broken string device is prevented to empty ring.
Background
The sewing machine is characterized in that one or more sewing threads are used, one or more stitches are formed on the sewing materials, one or more layers of the sewing materials are interwoven or sewn, the thread loosening device is needed in the using process of the sewing machine, the upper threads can be clamped tightly by the thread loosening device, the upper threads have proper tightness, and when no cloth is sewn (namely, empty ring sewing), the upper threads need to be loosened, the situation that the upper threads are broken when the machine needles cannot sew the cloth is avoided, and therefore the thread loosening device needs to have the function of loosening the upper threads.
Therefore, as a Chinese utility model patent with a patent number of CN201520771637.0 (with an authorization notice number of CN205011988U), 'a thread clamping adjusting mechanism of a sewing machine', the thread clamping adjusting mechanism comprises a thread clamping device mounting plate, at least two groups of large thread clamping devices are arranged on the thread clamping device mounting plate, and a first air cylinder is correspondingly arranged on each large thread clamping device; each small wire clamping device is correspondingly provided with a second cylinder; the wire loosening device is linked with each large wire clamping device respectively; the rotating handle is matched and connected with the thread slackening device and can drive the thread slackening device to rotate, so that each large thread clamp is driven to be simultaneously separated from the thread clamp mounting plate; the take-up spring mounting plate is detachably provided with a take-up spring assembly. Above-mentioned thread tension adjusting mechanism has realized the pine line to the line, but every big thread tension ware all corresponds with little thread tension ware and is equipped with the cylinder, and every thread tension ware all needs solitary cylinder to adjust promptly, and when the during operation of all thread tension wares of needs, each cylinder all need carry out work, has increased the loaded down with trivial details nature of operation, has reduced the pine line efficiency simultaneously.
Therefore, further improvements to existing empty ring line breakage prevention devices are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art's current situation, provide one kind and only realize loosing the line or pressing from both sides tightly all thread releasing device pine line on same clamp plate through a actuating mechanism to improve work efficiency's empty ring and prevent the broken string device.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: an empty ring disconnection preventing device comprises
Mounting a plate;
the first thread loosening devices are at least two and are arranged on the mounting plate at intervals, and each first thread loosening device is provided with a thread pressing part for pressing a thread;
it is characterized by also comprising
The first clamping plate is arranged on the mounting plate, is positioned between the mounting plate and the wire pressing part, is provided with a first strip-shaped hole at a position corresponding to the first wire loosening device, can move along the length direction of the first strip-shaped hole relative to the first wire loosening device, and is provided with a supporting part which can enable the wire pressing part to move towards the direction far away from the first clamping plate at one end of the first strip-shaped hole;
the first elastic piece always has the tendency of enabling the wire pressing part to move towards the first clamping plate; and
the driving mechanism is arranged on the mounting plate, the power output end of the driving mechanism is connected with the first clamping plate to drive the supporting portion of the first clamping plate to move along the length direction of the first strip-shaped hole, and therefore the wire pressing portion is pressed or the wire pressing portion is separated from the first clamping plate.
In order to facilitate the movement of the wire pressing part in the direction away from the first clamping plate, the wire pressing part is provided with a first opening part for the insertion of the supporting part, and the inner top surface of the first opening part gradually inclines towards the first clamping plate along the insertion direction of the supporting part. In the process that the supporting part is gradually inserted into the first opening part, the thread pressing part is continuously pushed to move towards the direction far away from the first clamping plate, and therefore the thread loosening function is achieved.
Two positions of the same facial line are correspondingly provided with the thread loosening device, so that the thread loosening is carried out at a certain position, the other position is clamped, and the hollow ring thread breakage preventing device further comprises a thread loosening device
The second thread loosening devices are arranged on the mounting plate, correspond to the first thread loosening devices one by one, are provided with thread pressing pieces used for pressing the upper threads, and are pressed with the first thread loosening devices correspondingly arranged to form the same root threads; and
the second clamp sets up on the mounting panel, and is located between mounting panel and the pressure line spare to with first clamp homonymy, and side by side interval arrangement, this second clamp has seted up the second bar hole on the position that corresponds the second loose line ware, second bar hole and first bar hole extending direction are unanimous, and can be relative under actuating mechanism's the drive the second loose line ware is followed the length direction motion in second bar hole, thereby make one of them unclamp the facial line in pressure line portion and the pressure line spare. Therefore, on one hand, the thread is loosened at a certain position of the same upper thread, so that the upper thread is prevented from being broken; on the other hand, can fix a position certain position of facial suture, prevent that the facial suture from breaking away from completely, increased the convenience of facial suture threading.
For the convenience realize the pine of same root facial line a certain position, a certain position compresses tightly, and the direction of motion of first clamp and second clamp can be the same, also can be opposite, preferably, actuating mechanism's power take off end links to each other with linkage structure, first clamp passes through linkage structure and links to each other with the second clamp to under actuating mechanism's drive, the direction of motion of first clamp and second clamp is opposite, just the second clamp is provided with in the one end that is located second bar hole and enables the support piece of pressing the line piece to keeping away from second clamp direction motion, support piece and supporting part are located second bar hole length direction's same end.
In order to conveniently restore the wire pressing piece to the initial position, a second elastic piece which has the tendency of enabling the wire pressing piece to move towards the second clamping plate is arranged on the wire pressing piece.
Linkage structure's structural style has the multiple, from simple structure and cost perspective, preferably, linkage structure is including the connecting plate, the position that the connecting plate is close to the centre can rotate to be connected on the mounting panel, actuating mechanism's power take off end links to each other with the first end of connecting plate, the first end of connecting plate links to each other with first clamp, and the second end of connecting plate links to each other with the second clamp.
Preferably, actuating mechanism sets up and deviates from at the mounting panel one side of first splint, the first end of connecting plate and second are served and all have towards the protruding extension post of establishing of corresponding splint direction, offer the confession on first splint and the second splint and correspond the extension post and insert the trompil groove of establishing on the position that corresponds the extension post.
In order to facilitate the movement of the wire pressing piece in the direction far away from the second clamping plate, the wire pressing piece is provided with a second opening part for the insertion of the supporting piece, and the inner top surface of the second opening part gradually inclines towards the second clamping plate along the insertion direction of the supporting piece. In the process that the supporting piece is gradually inserted into the second opening part, the wire pressing piece is continuously pushed to move towards the direction far away from the second clamping plate, and therefore the wire loosening function is achieved.
In order to realize the installation of the first thread loosening device and the installation plate, preferably, the thread pressing part is provided with an installation column extending towards the installation plate, the installation plate is provided with a jack for inserting the corresponding installation column, and the installation column sequentially penetrates through the first strip-shaped hole and the jack to enable the first thread loosening device to be installed on the installation plate.
In order to realize the installation of second thread loosening device and mounting panel, preferably, the last projection that extends to the mounting panel direction that has of line ball, have on the mounting panel and supply to correspond the projection and insert the mounting hole of establishing, the projection passes second bar hole, mounting hole in proper order and makes the second thread loosening device is installed on the mounting panel.
Compared with the prior art, the utility model has the advantages of: 1. the first clamping plate of the empty-ring anti-breakage device moves along the direction of the first strip-shaped hole under the driving of the driving mechanism, so that the wire loosening or pressing of each first wire loosening device at the corresponding position on the first clamping plate can be realized only through one driving mechanism, and the working efficiency is further improved; 2. the second thread loosening device that corresponds the setting with first thread loosening device exists, sets up the thread loosening device in two positions of same root facial line promptly to realize under same actuating mechanism's drive that a position to same root facial line is loosened the line, another position line ball prevents on the one hand that the facial line is cracked, and on the other hand prevents that the facial line from breaking away from completely corresponding thread loosening device, and the excessive problem that needs to wear to establish to the facial line again of appearing the thread loosening, has increased the convenience that the facial line wore to establish.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention (the first thread releasing device is in a thread releasing state);
FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;
fig. 3 is a schematic structural diagram of an embodiment of the present invention (the second thread releasing device is in a thread releasing state);
FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;
FIG. 5 is a cross-sectional view of FIG. 3;
fig. 6 is a schematic structural view of a first clamping plate according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a second clamping plate according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 7, the utility model discloses broken string device is prevented to empty ring of embodiment includes mounting panel 1, first clamp 2, first thread loosening ware 3, first elastic component 32, actuating mechanism 4, second thread loosening ware 5, second clamp 6 and second elastic component 52.
As shown in fig. 1 and 3, the first clamping plate 2 and the second clamping plate 6 are both strip-shaped, the first clamping plate 2 is arranged on the mounting plate 1, the first clamping plate 2 is located between the mounting plate 1 and the wire pressing portion 31, a first strip-shaped hole 21 is formed in the position, corresponding to the first wire loosening device 3, of the first clamping plate 2, the first clamping plate 2 can move along the length direction of the first strip-shaped hole 21 relative to the first wire loosening device 3, and a supporting portion 22 capable of enabling the wire pressing portion 31 to move in the direction away from the first clamping plate 2 is arranged at one end, located in the first strip-shaped hole 21, of the first clamping plate 2; the second clamp 6 is arranged on the mounting plate 1, the second clamp 6 is located between the mounting plate 1 and the wire pressing piece 51, the second clamp 6 is arranged on the same side of the first clamp 2 and is arranged side by side at intervals, a second strip-shaped hole 61 is formed in the position, corresponding to the second wire loosening device 5, of the second clamp 6, the second strip-shaped hole 61 is consistent with the extending direction of the first strip-shaped hole 21, one end, located in the second strip-shaped hole 61, of the second clamp 6 is provided with a support piece 62 capable of enabling the wire pressing piece 51 to move towards the direction far away from the second clamp 6, the second clamp 6 can move along the length direction of the second strip-shaped hole 61 relative to the second wire loosening device 5 under the driving of the driving mechanism 4, and therefore one of the wire pressing portion 31 and the wire pressing piece 51 is loosened. In this embodiment, the supporting member 62 and the supporting portion 22 are located at the same end of the second elongated hole 61 in the length direction. In addition, above-mentioned broken string device is prevented to empty ring is mainly used on the device that has sewing machine, and wherein, first splint 2 is close to the thread rod that has the winding facial suture, and second splint 6 is close to sewing machine's presser foot, loosens the line through carrying out the pine to one of two positions of same root facial suture, loosens the line to different positions promptly to actual conditions, can prevent the broken string better.
First loose line ware 3 has two at least, in this embodiment, first loose line ware 3 has 5, 5 first loose line ware 3 are arranged along the length direction interval of first splint 2, first loose line ware 3 includes first top cap 30 and the line ball portion 31 that is used for the line ball, line ball portion 31 has the erection column 312 that extends to the mounting panel 1 direction, set up on the mounting panel 1 and supply to correspond the erection column 312 and insert the jack 11 of establishing, the erection column 312 passes first bar hole 21 in proper order, jack 11 and makes first loose line ware 3 install on mounting panel 1. Further, the wire pressing portion 31 has thereon a first projection 313 extending in a direction away from the mounting board 1; the first elastic member 32 always has a tendency of moving the line pressing portion 31 towards the first clamping plate 2 so that the line pressing portion 31 presses the upper line on the first clamping plate 2, and the first elastic member 32 is a spring sleeved on the first protrusion 313, two ends of the spring respectively abut against the line pressing portion 31 and the inner top surface of the first top cover 30, in this embodiment, the line pressing portion 31, the first protrusion 313 and the mounting post 312 are an integrally formed piece.
In order to facilitate the movement of the wire pressing portion 31 in a direction away from the first clamp plate to increase the gap between the wire pressing portion 31 and the first clamp plate, as shown in fig. 5, the wire pressing portion 31 has a first opening portion 311 into which the support portion 22 is inserted, and an inner top surface 3111 of the first opening portion 311 is gradually inclined in a direction of the first clamp plate 2 along an insertion direction of the support portion 22.
The number of the second thread loosening devices 5 is at least two, in this embodiment, the number of the second thread loosening devices 5 is 5, the 5 second thread loosening devices 5 are arranged at intervals along the length direction of the second thread clamping plate 6, the second thread loosening devices 5 are arranged on the mounting plate 1 and are in one-to-one correspondence with the first thread loosening devices 3, and the second thread loosening devices 5 are pressed with the first thread loosening devices 3 correspondingly arranged, specifically, the first thread loosening devices 3 and the second thread loosening devices 5 correspondingly arranged are respectively provided with a first thread passing plate 33 and a second thread passing plate 53 which are convenient for threading, as shown in fig. 1, fig. 3 and fig. 5, only one first thread passing plate and one second thread passing plate are arranged in this embodiment, and the thread passing plates corresponding to other thread loosening devices are not drawn. The first threading plate 33 and the second threading plate 53 are both U-shaped, the middle plate 331 of the first threading plate 33 is positioned between the first thread clamping plate 2 and the mounting plate 1, the first side plates 332 positioned at two sides of the middle plate 331 of the first threading plate extend towards the first thread clamping plate 2, and the two first side plates 332 of the first threading plate 33 are both provided with first through holes 333 for the threading of facial threads; the middle plate 531 of the second threading plate 53 is located between the second thread clamping plate 6 and the mounting plate 1, the second side plates 532 located at two sides of the middle plate 531 of the second threading plate extend towards the second thread clamping plate 6, the two second side plates 532 of the second threading plate 53 are both provided with second through holes 533 for the upper threads to pass through, the same upper thread passes through the first through hole 333, the gap between the first thread loosening device 3 and the first thread clamping plate 2, the second threading hole 533 and the gap between the second thread loosening device 5 and the second thread clamping plate 6, and the threading direction is shown by an arrow in fig. 3; second thread loosening device 5 is including second top cap 50 and the wire pressing piece 51 that is used for pressing the facial line of establishing, has the projection 512 that extends to the mounting panel 1 direction on the wire pressing piece 51, offers the confession on the mounting panel 1 to correspond projection 512 and inserts the mounting hole 12 of establishing, and second bar hole 61, mounting hole 12 are passed in proper order to projection 512 and make second thread loosening device 5 install on mounting panel 1. Specifically, the wire pressing member 51 has a second projection 513 extending away from the mounting plate 1, and the second projection 513 is disposed on the second top cover 50; the second elastic member 52 always has a tendency of moving the thread pressing member 51 toward the second clamp 6 so that the thread pressing member 51 presses the upper thread on the second clamp 6, the second elastic member 52 is a spring sleeved on the second protrusion 513, and the thread pressing member 51, the second protrusion 513 and the boss 512 are integrally formed.
In order to facilitate the movement of the thread pressing member 51 in the direction away from the second clamp plate to increase the gap between the thread pressing member 51 and the second clamp plate for pressing the upper thread, as shown in fig. 5, the thread pressing member 51 has a second opening portion 511 into which the support member 62 is inserted, and an inner top surface 5111 of the second opening portion 511 is gradually inclined toward the second clamp plate 6 along the insertion direction of the support member 62.
As shown in fig. 1 to 4, the driving mechanism 4 is disposed on the mounting plate 1, and a power output end of the driving mechanism 4 is connected to the first clamping plate 2 to drive the supporting portion 22 of the first clamping plate 2 to move along the length direction of the first strip-shaped hole 21, so that the crimping portion 31 is crimped or detached from the first clamping plate 2. Specifically, the power output end of the driving mechanism 4 is connected with the linkage structure 7, the first clamping plate 2 is connected with the second clamping plate 6 through the linkage structure 7, and the first clamping plate 2 and the second clamping plate 6 are driven by the driving mechanism 4 to move in opposite directions. As shown in fig. 2 and 4, the linkage structure 7 includes a connecting plate 71, the connecting plate 71 is rotatably connected to the mounting plate 1 at a position near the middle, the power output end of the driving mechanism 4 is connected to a first end of the connecting plate 71, a first end of the connecting plate 71 is connected to the first clamping plate 2, and a second end of the connecting plate 71 is connected to the second clamping plate 6.
The driving mechanism 4 can be arranged at various positions, can be arranged at the same side of the first clamping plate 2, and can also be arranged at other positions, as shown in fig. 1 to 5, the driving mechanism 4 in the embodiment is arranged at one side of the mounting plate 1, which is far away from the first clamping plate 2, the first end and the second end of the connecting plate 71 are respectively provided with an extension column which is convexly arranged towards the direction of the corresponding clamping plate, and the positions of the first clamping plate 2 and the second clamping plate 6, which correspond to the extension columns, are provided with a tapping groove for the corresponding extension column to be inserted; specifically, the first end of the connecting plate 71 is provided with a first extending column 711 extending towards the first clamping plate 2, correspondingly, a first opening groove 23 for the first extending column 711 to be inserted is formed in the position, corresponding to the first extending column 711, on the first clamping plate 2, and the first clamping plate 2 is connected with the first end of the connecting plate 71 through the insertion and matching of the first extending column 711 and the corresponding first opening groove 23; the second end of connecting plate 71 has the second extension post 712 that extends towards second splint 6 direction, correspondingly, offers the second trompil groove 63 that supplies second extension post 712 to insert to establish on the position that corresponds second extension post 712 on the second splint 6, and second splint 6 realizes being connected with the second end of connecting plate 71 through the grafting cooperation of second extension post 712 with corresponding second trompil groove 63.
Claims (10)
1. An empty ring disconnection preventing device comprises
A mounting plate (1);
at least two first thread loosening devices (3) are arranged on the mounting plate (1) at intervals and are provided with thread pressing parts (31) for pressing threads;
it is characterized by also comprising
The first clamping plate (2) is arranged on the mounting plate (1), is positioned between the mounting plate (1) and the line pressing part (31), is provided with a first strip-shaped hole (21) at a position corresponding to the first line loosening device (3), and can move along the length direction of the first strip-shaped hole (21) relative to the first line loosening device (3), and one end of the first clamping plate (2) positioned in the first strip-shaped hole (21) is provided with a supporting part (22) which can enable the line pressing part (31) to move towards the direction far away from the first clamping plate (2);
a first elastic member (32) which always tends to move the wire pressing part (31) in the direction of the first clamp (2); and
the driving mechanism (4) is arranged on the mounting plate (1), the power output end of the driving mechanism is connected with the first clamping plate (2) to drive the supporting portion (22) of the first clamping plate (2) to move along the length direction of the first strip-shaped hole (21), and therefore the wire pressing portion (31) is pressed or the wire pressing portion is separated from the first clamping plate (2).
2. The empty ring breakage prevention device according to claim 1, wherein: the line pressing part (31) is provided with a first opening part (311) for inserting the supporting part (22), and the inner top surface (3111) of the first opening part (311) gradually inclines towards the first clamp plate (2) along the inserting direction of the supporting part (22).
3. The empty ring breakage prevention device according to claim 1, wherein: also comprises
The second thread loosening devices (5) are arranged on the mounting plate (1), correspond to the first thread loosening devices (3) one by one, are provided with thread pressing pieces (51) used for pressing the upper threads, and are pressed with the first thread loosening devices (3) which are correspondingly arranged to form the same upper threads; and
second thread clamping board (6), set up on mounting panel (1), and be located between mounting panel (1) and wire pressing piece (51), and with first thread clamping board (2) homonymy, and side by side interval arrangement, second bar hole (61) have been seted up in this second thread clamping board (6) on the position that corresponds second thread loosening ware (5), second bar hole (61) and first bar hole (21) extending direction are unanimous, and can be relative under the drive of actuating mechanism (4) second thread loosening ware (5) are followed the length direction motion of second bar hole (61), thereby make one of wire pressing portion (31) and wire pressing piece (51) loosens the facial line.
4. The empty ring wire breakage prevention device according to claim 3, characterized in that: the power take off end of actuating mechanism (4) links to each other with linkage structure (7), first clamp (2) link to each other with second clamp (6) through linkage structure (7) to under the drive of actuating mechanism (4), the direction of motion of first clamp (2) and second clamp (6) is opposite, just second clamp (6) is provided with in the one end that is located second bar hole (61) and enables press line spare (51) to support piece (62) of keeping away from second clamp (6) direction motion, support piece (62) and supporting part (22) are located second bar hole (61) length direction's same end.
5. The empty ring wire breakage prevention device according to claim 4, wherein: the wire pressing piece (51) is provided with a second elastic piece (52) which has the tendency of enabling the wire pressing piece (51) to move towards the direction of the second clamping plate (6).
6. The empty ring wire breakage prevention device according to claim 4, wherein: linkage structure (7) are including connecting plate (71), the position of connecting plate (71) neighbouring centre can rotate to be connected on mounting panel (1), the power take off end of actuating mechanism (4) links to each other with the first end of connecting plate (71), the first end of connecting plate (71) links to each other with first clamp (2), and the second end of connecting plate (71) links to each other with second clamp (6).
7. The empty ring wire breakage prevention device according to claim 6, wherein: actuating mechanism (4) set up and deviate from in mounting panel (1) one side of first splint (2), the first end and the second of connecting plate (71) are served and all have towards the protruding extension post of establishing of corresponding splint direction, offer on first splint (2) and second splint (6) and correspond the position of extension post and supply to correspond the extension post and insert the trompil groove of establishing.
8. The empty ring wire breakage prevention device according to claim 4, wherein: the wire pressing piece (51) is provided with a second opening part (511) for inserting the support piece (62), and the inner top surface (5111) of the second opening part (511) gradually inclines towards the second wire clamping plate (6) along the inserting direction of the support piece (62).
9. A hollow ring breakage prevention device according to any one of claims 1 to 8, wherein: have erection column (312) to the extension of mounting panel (1) direction on crimping portion (31), offer on mounting panel (1) and supply to correspond erection column (312) and insert jack (11) of establishing, erection column (312) pass first bar hole (21), jack (11) in proper order and make first pine line ware (3) are installed on mounting panel (1).
10. The empty ring wire breakage prevention device according to claim 4, wherein: have on line ball spare (51) to mounting panel (1) direction extension's projection (512), set up on mounting panel (1) and supply to correspond projection (512) and insert mounting hole (12) of establishing, second bar hole (61), mounting hole (12) and make are passed in proper order in projection (512) second loose line ware (5) are installed on mounting panel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920818199.7U CN210314770U (en) | 2019-05-31 | 2019-05-31 | Wire-breaking prevention device for empty ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920818199.7U CN210314770U (en) | 2019-05-31 | 2019-05-31 | Wire-breaking prevention device for empty ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210314770U true CN210314770U (en) | 2020-04-14 |
Family
ID=70141565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920818199.7U Active CN210314770U (en) | 2019-05-31 | 2019-05-31 | Wire-breaking prevention device for empty ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210314770U (en) |
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2019
- 2019-05-31 CN CN201920818199.7U patent/CN210314770U/en active Active
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