CN213483731U - Cover opening mechanism - Google Patents

Cover opening mechanism Download PDF

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Publication number
CN213483731U
CN213483731U CN202023347846.2U CN202023347846U CN213483731U CN 213483731 U CN213483731 U CN 213483731U CN 202023347846 U CN202023347846 U CN 202023347846U CN 213483731 U CN213483731 U CN 213483731U
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China
Prior art keywords
door
bolt
transmission
driving
base
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CN202023347846.2U
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Chinese (zh)
Inventor
赵轶
杜振东
舒贻胜
郭剑飞
谢世敏
姚建强
黄长兴
陈夏薇
宋金梁
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Hangzhou Changchuan Technology Co Ltd
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Hangzhou Changchuan Technology Co Ltd
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Priority to CN202023347846.2U priority Critical patent/CN213483731U/en
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Abstract

The utility model provides a mechanism of uncapping relates to wafer test and equips technical field, the utility model provides a mechanism of uncapping includes: the cover opening device comprises a cover opening panel, a cover opening assembly, a transmission part and a driving part; the cover opening assembly comprises a door bolt and a transmission wheel, the door bolt is rotatably connected with the cover opening panel, the transmission wheel is in transmission connection with the door bolt, and the driving piece drives the transmission wheel to rotate through a transmission piece; an overload protection piece is arranged between the driving piece and the driving wheel or between the driving wheel and the door bolt, and when the door bolt is clamped on the cover opening panel, the overload protection piece blocks the driving piece from transmitting power to the door bolt. The utility model provides a mechanism of uncapping leads to the technical problem of wafer lid damage when uncapping the mechanism and uncapping the failure among the correlation technique.

Description

Cover opening mechanism
Technical Field
The utility model belongs to the technical field of wafer test equipment technique and specifically relates to a mechanism uncaps is related to.
Background
The wafer box mainly plays a role in storing and conveying wafers in semiconductor production and transportation, and can reduce the risk of wafer contamination; the wafer refers to a silicon wafer used for manufacturing a silicon semiconductor integrated circuit, and has a circular shape. During the transportation process of the wafer, the manipulator is required to pick and place the wafer in the wafer box, and the wafer box cover is required to be opened in the process.
The traditional cover opening mechanism mainly comprises two types, wherein one type is that a cylinder is adopted as power, a plane connecting rod mechanism is adopted as a transmission mechanism, the cylinder drives a door bolt to rotate through the plane connecting rod mechanism, the other type is that the cylinder is adopted as power, a gear rack is adopted as the transmission mechanism, the cylinder drives the gear rack to do linear motion, and a gear on the door bolt is driven by the gear rack to rotate. Two kinds of traditional mechanism of uncapping have a common problem, and the keeper card is in the wafer lid when the wafer box uncaps the failure, and the cylinder continues to pass through drive mechanism drive keeper rotation, thereby can lead to the wafer lid to damage because of cylinder thrust is too big.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mechanism uncaps to lead to the technical problem of wafer lid damage when uncapping the mechanism and uncap the failure in alleviating correlation technique.
The utility model provides a mechanism of uncapping includes: the cover opening device comprises a cover opening panel, a cover opening assembly, a transmission part and a driving part; the cover opening assembly comprises a door bolt and a transmission wheel, the door bolt is rotatably connected with the cover opening panel, the transmission wheel is in transmission connection with the door bolt, and the driving piece drives the transmission wheel to rotate through the transmission piece;
and an overload protection piece is arranged between the driving piece and the driving wheel or between the driving wheel and the door bolt, and when the door bolt is clamped on the wafer box cover, the overload protection piece blocks the driving piece from transmitting power to the door bolt.
Further, the number of the uncovering assemblies is two, and the transmission pieces are in transmission connection with the transmission wheels in the two uncovering assemblies.
Further, the drive wheel includes the band pulley, the driving medium includes the hold-in range, the hold-in range is regarded as overload protection piece cover is located two the band pulley, the driving piece with hold-in range transmission is connected.
Further, be equipped with the keeper supporting seat on the panel of uncapping, the keeper respectively with the panel of uncapping with the keeper supporting seat rotates to be connected, the band pulley is located the panel of uncapping with between the keeper supporting seat to fixed cover is located the keeper.
Further, the driving piece comprises an air cylinder, and the driving end of the air cylinder is connected with the synchronous belt through a fixing assembly.
Further, fixed subassembly includes base, regulation head, first clamp plate and second clamp plate, the drive end of cylinder with the base is connected, adjust the head edge the length direction of hold-in range with the base is adjustable to be connected, first clamp plate with the base can be dismantled and the connection, the second clamp plate with adjust the head and can dismantle the connection, one side of hold-in range is located first clamp plate with between the base and the second clamp plate with adjust between the head.
Further, the base be equipped with the axis with the parallel adjusting through hole of length direction of hold-in range, adjust the head be equipped with the coaxial screw hole of adjusting through hole, adjusting bolt passes adjusting through hole with the screw hole cooperation.
Furthermore, the uncovering panel is provided with a guide rail extending along the length direction of the synchronous belt, and the base is provided with a sliding block in sliding fit with the guide rail.
Further, the mechanism of uncapping still includes the buffer, the buffer is located one side that deviates from the cylinder of base.
Further, the buffer is adjustably connected with the cover opening panel to adjust the distance between the buffer and the base.
The utility model provides a mechanism of uncapping includes: the cover opening device comprises a cover opening panel, a cover opening assembly, a transmission part and a driving part; the cover opening assembly comprises a door bolt and a transmission wheel, the door bolt is rotatably connected with the cover opening panel, the transmission wheel is in transmission connection with the door bolt, and the driving piece drives the transmission wheel to rotate through a transmission piece; an overload protection piece is arranged between the driving piece and the driving wheel or between the driving wheel and the door bolt, and when the door bolt is clamped on the wafer box cover, the overload protection piece blocks the driving piece from transmitting power to the door bolt. In the process of uncapping, the driving piece passes through the axis rotation of driving medium and drive wheel drive keeper around its self to open the lock on the wafer box cover, when meetting uncap failure keeper card in the wafer box cover, the driving piece continues driven in-process, and overload protection piece blocks driving piece and transmits power to the keeper, prevents that the keeper from continuing to rotate and damaging the wafer box cover.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a first side of a cover opening mechanism provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second side of the cover opening mechanism according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken at A in FIG. 2;
fig. 4 is a schematic structural diagram of a fixing component in the cover opening mechanism provided by the embodiment of the present invention.
Icon: 100-a cover opening panel; 110-bolt support seats; 200-a lid opening assembly; 210-a door bolt; 220-a pulley; 230-cam bearings; 240-expansion sleeve; 250-flange bearing; 260-a clamp spring; 300-synchronous belt; 400-cylinder; 500-a stationary assembly; 510-a base; 511-adjusting the through hole; 512-mounting through holes; 520-an adjustment head; 521-a threaded hole; 522-oblong holes; 530-a first platen; 540-a second platen; 610-a guide rail; 620-a slider; 700-a buffer; 710-fixed seat.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a cover opening mechanism, which includes: a door opening panel 100, a door opening assembly 200, a transmission member and a driving member; the cover opening assembly 200 comprises a bolt 210 and a transmission wheel, the bolt 210 is rotatably connected with the cover opening panel 100, the transmission wheel is in transmission connection with the bolt 210, and a driving piece drives the transmission wheel to rotate through the transmission piece; an overload protection member is disposed between the driving member and the driving wheel or between the driving wheel and the latch 210, and when the latch 210 is clamped on the lid of the wafer cassette, the overload protection member blocks the driving member from transmitting power to the latch 210.
Specifically, the door bolt 210 penetrates the uncovering panel 100 from the first side of the uncovering panel 100 and penetrates out from the second side of the uncovering panel 100, the driving wheel, the driving member and the driving member are all located at the second side of the uncovering panel 100, the driving wheel can be directly sleeved on the door bolt 210 or is in transmission connection with the door bolt 210 through a transmission assembly, in this embodiment, the driving wheel is fixedly sleeved on the door bolt 210, so as to simplify the structure of the uncovering mechanism. The driving part is in transmission connection with the transmission part, and the transmission part is in transmission connection with the transmission wheel, so that the driving part can drive the door bolt 210 to rotate around the axis of the door bolt, and the door opening operation is realized.
The number of the cover opening assemblies 200 can be one, two or three, in this embodiment, the number of the cover opening assemblies 200 is two, the two cover opening assemblies 200 are distributed at intervals along the direction perpendicular to the axis of the door bolts 210, the transmission member is in transmission connection with the transmission wheels in the two cover opening assemblies 200, and the driving member drives the two transmission wheels to synchronously rotate through the transmission member, so that the two transmission wheels drive the two door bolts 210 to synchronously transmit.
In some embodiments, the driving wheel includes a gear, the gear is fixedly sleeved on the bolt 210, the driving member includes a gear transmission set, the driving member includes a motor, the motor drives the gear to rotate through the gear transmission set, and the gear drives the bolt 210 to rotate. The overload protector includes a torque protector that can be installed between the gear and the bolt 210 or between the motor and the gear train. When the door bolt 210 is clamped in the wafer box cover in the uncovering process, the motor continuously drives the door bolt 210 to rotate, the torque between the motor and the gear transmission set and the torque between the gear and the door bolt 210 are increased, and when the torque is increased to a set value, the torque protector blocks the motor to transmit power to the door bolt 210, so that the door bolt 210 is prevented from continuously rotating to damage the wafer box cover.
In this embodiment, the driving wheel includes belt wheels 220, the driving member includes a synchronous belt 300, the two belt wheels 220 are sleeved on the two bolts 210 in a one-to-one correspondence manner, the synchronous belt 300 is used as an overload protection member and sleeved on the two belt wheels 220, and the driving member is in transmission connection with the synchronous belt 300. In the process of uncapping, driving piece drive hold-in range 300 drives two band pulleys 220 and rotates, and two band pulleys 220 drive two keeper 210 synchronous revolutions, and when taking place to uncap the failure and keeper 210 card when the wafer box covers, hold-in range 300 skids for band pulley 220, blocks driving piece and to keeper 210 transmission power, prevents that keeper 210 from continuing to rotate and damaging the wafer box lid.
Further, the door bolt support base 110 is disposed on the door opening panel 100, the door bolt 210 is rotatably connected to the door opening panel 100 and the door bolt support base 110, and the belt wheel 220 is disposed between the door opening panel 100 and the door bolt support base 110 and is fixedly sleeved on the door bolt 210.
Specifically, the number of the keeper support seats 110 is two, and the two keeper support seats 110 are both located on the second side of the door opening panel 100 and are arranged in one-to-one correspondence with the two door opening assemblies 200, and the following description will be specifically given by taking an example of the arrangement of one of the door opening assemblies 200 and the keeper support seats 110: as shown in fig. 3, the uncovering panel 100 is provided with a first stepped hole, the diameter of the left end of the first stepped hole shown in fig. 3 is larger than that of the right end thereof, the circumferential surface of the left end portion of the bolt 210 is provided with a first shoulder, the cam bearing 230 is sleeved on the left end portion of the bolt 210, the left end surface of the inner ring of the cam bearing 230 is abutted with the first shoulder, the shoulder on the outer ring of the cam bearing 230 is abutted with the first limit surface of the first stepped hole, and the first shoulder and the first limit surface are matched to axially limit the cam bearing 230. The middle part of keeper 210 is equipped with the second shoulder, band pulley 220 is located the middle part of keeper 210, and the left end face and the second shoulder butt of band pulley 220, the inner circle of band pulley 220 is the circular conical surface, from the left end that shows 3 to the right end that shows 3, the circular conical surface inclines towards the direction of keeping away from the axis of band pulley 220, the right side of band pulley 220 is equipped with inflation cover 240, inflation cover 240 is located keeper 210 and inserts the circular conical surface from the right side of band pulley 220, the screw is fixed in the right-hand member face of band pulley 220 with inflation cover 240, thereby make band pulley 220 fix the cover and locate on keeper 210. The bolt support base 110 has a U-shaped cross section and covers the pulley 220, and the bolt support base 110 is mounted on the door opening panel 100 by screws. Be equipped with the second ladder hole on the keeper support seat 110, the diameter of the left end that second ladder hole fig. 3 shows is less than the diameter of its right-hand member, the right-hand member portion of keeper 210 is located to flange bearing 250 cover, the left end face of flange bearing 250 outer lane and the spacing face butt of second ladder hole, the right side of flange bearing 250 is equipped with jump ring 260, jump ring 260 joint in the right-hand member portion of keeper 210 and with the right-hand member face butt of flange bearing 250, jump ring 260 carries out the axial spacingly with the spacing face cooperation of second to flange bearing 250. The bolt support base 110 is engaged with the door opening panel 100 to support the bolt 210, and the pulley 220 is located in the area between the bolt support base 110 and the door opening panel 100 to protect the pulley 220.
In some embodiments, the driving member may also be an air cylinder 400 or a hydraulic cylinder, and in this embodiment, the driving member includes an air cylinder 400, as shown in fig. 2, the air cylinder 400 is located below the synchronous belt 300 and is arranged along the length direction of the synchronous belt 300, the cylinder body of the air cylinder 400 is mounted on the uncovering panel 100 by a bolt, and the piston rod of the air cylinder 400 is fixedly connected to one side of the synchronous belt 300 by the fixing component 500. In the cover opening process, the piston rod extends out of the cylinder body, the two belt wheels 220 are driven by the synchronous belt 300 to rotate clockwise as shown in fig. 2, and the two belt wheels 220 drive the corresponding door bolts 210 to rotate so as to open the lock on the wafer box cover.
Further, the fixing assembly 500 comprises a base 510, an adjusting head 520, a first pressing plate 530 and a second pressing plate 540, the driving end of the air cylinder 400 is connected with the base 510, the adjusting head 520 is adjustably connected with the base 510 along the length direction of the synchronous belt 300, the first pressing plate 530 is detachably connected with the base 510, the second pressing plate 540 is detachably connected with the adjusting head 520, and one side of the synchronous belt 300 is located between the first pressing plate 530 and the base 510 and between the second pressing plate 540 and the adjusting head 520.
As shown in fig. 4, the lower end of the base 510 is provided with a mounting through hole 512, an axis of the mounting through hole 512 is parallel to a length direction of the timing belt 300, and a piston rod of the cylinder 400 is fixed in the mounting through hole 512. The one end of base 510 up end has the installation arch, is equipped with the first draw-in groove that is used for holding hold-in range 300 in the installation arch, and hold-in range 300 is located first draw-in groove, and the opening part that fits first draw-in groove is covered to first clamp plate 530 to be connected with the installation arch through the screw. The adjusting head 520 is mounted at the second end of the upper end face of the base 510, the adjusting head 520 is provided with a long circular hole 522, the length direction of the long circular hole 522 is parallel to the length direction of the synchronous belt 300, and a bolt penetrates through the long circular hole 522 to be connected with the base 510, so that the adjusting head 520 is mounted on the base 510. The upper end of adjusting head 520 is equipped with the second draw-in groove, and the diapire of second draw-in groove and the diapire of first draw-in groove are located same horizontal plane, and hold-in range 300 is located the second recess, and second clamp plate 540 covers on the second draw-in groove to be connected with adjusting head 520 through the screw. In the cover opening process, the cylinder 400 drives the synchronous belt 300 to move through the base 510, so that the synchronous belt 300 drives the two belt wheels 220 to rotate, the two belt wheels 220 drive the two door bolts 210 to rotate synchronously, and the lock on the wafer box cover is opened.
The inner surface of the synchronous belt 300 is provided with first engaging teeth, and the first pressing plate 530 and the second pressing plate 540 are both provided with second engaging teeth matched with the first engaging teeth, so that the synchronous belt 300 is prevented from slipping relative to the first pressing plate 530 and the second pressing plate 540 in the uncovering process. When the tightness of the synchronous belt 300 needs to be adjusted, the bolt connecting the adjusting head 520 and the base 510 is unscrewed, so that the adjusting head 520 moves along the length direction of the long circular hole 522, the tightness of the synchronous belt 300 is adjusted, the bolt is screwed after adjustment is completed, and the adjusting head 520 is prevented from moving relative to the base 510.
Further, the base 510 is provided with an adjusting through hole 511 whose axis is parallel to the length direction of the timing belt 300, the adjusting head 520 is provided with a threaded hole 521 coaxial with the adjusting through hole 511, and the adjusting bolt passes through the adjusting through hole 511 to be matched with the threaded hole 521. When adjusting hold-in range 300's elasticity, after unscrewing the bolt of connecting regulation head 520 and base 510, the accessible rotation adjusting bolt rotates around its self axis, and adjusting bolt drive regulation head 520 removes along the length direction of slotted hole 522, conveniently adjusts the position of regulation head 520 to conveniently adjust hold-in range 300's elasticity.
Further, the door opening panel 100 is provided with a guide rail 610 extending in the length direction of the timing belt 300, and the base 510 is provided with a slider 620 slidably engaged with the guide rail 610. Specifically, the guide rail 610 is mounted on the uncovering panel 100 through a bolt, the base 510 is provided with a slider 620 on the side wall opposite to the guide rail 610, the slider 620 is in sliding fit with the guide rail 610, and in the process that the cylinder 400 drives the base 510 to move, the guide rail 610 is matched with the slider 620 to play a role in guiding and limiting the base 510, so that the stability of the base 510 in the moving process is improved.
Further, the uncovering mechanism further comprises a buffer 700, and the buffer 700 is arranged on one side of the base 510, which faces away from the air cylinder 400. Specifically, the buffer 700 is a spring buffer or a hydraulic buffer, and in this embodiment, the buffer 700 is a hydraulic buffer, as shown in fig. 2, the buffer 700 is installed at the left side of the base 510, and the buffer end is disposed opposite to the base 510, and the buffer 700 is used to limit the limit position of the leftward movement of the base 510, so as to limit the rotation angle of the latch 210 during the door opening process.
Further, the buffer 700 is adjustably coupled to the door opening panel 100 to adjust a distance between the buffer 700 and the base 510. Specifically, the fixed seat 710 is installed on the door opening panel 100, and the buffer 700 is installed on the fixed seat 710 and can be adjusted in position on the fixed seat 710. By adjusting the position of the buffer 700 on the fixing seat 710, the limit position of the base 510 moving leftward can be adjusted, and the rotation angle of the bolt 210 can be controlled.
The embodiment of the utility model provides a wafer box and mechanism of uncapping, the mechanism of uncapping includes: a door opening panel 100, a door opening assembly 200, a transmission member and a driving member; the cover opening assembly 200 comprises a bolt 210 and a transmission wheel, the bolt 210 is rotatably connected with the cover opening panel 100, the transmission wheel is in transmission connection with the bolt 210, and a driving piece drives the transmission wheel to rotate through the transmission piece; an overload protection member is disposed between the driving member and the driving wheel or between the driving wheel and the latch 210, and when the latch 210 is clamped on the lid of the wafer cassette, the overload protection member blocks the driving member from transmitting power to the latch 210. In the cover opening process, the driving piece drives the door bolt 210 to rotate around the axis of the driving piece and the driving wheel so as to open the lock on the wafer box cover, when the door bolt 210 is clamped in the wafer box cover due to cover opening failure, the driving piece continues to drive, the overload protection piece blocks the driving piece to transmit power to the door bolt 210, and the door bolt 210 is prevented from continuing to rotate to damage the wafer box cover.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A lid opening mechanism, comprising: the cover opening device comprises a cover opening panel (100), a cover opening assembly (200), a transmission part and a driving part; the uncovering assembly (200) comprises a bolt (210) and a transmission wheel, the bolt (210) is rotatably connected with the uncovering panel (100), the transmission wheel is in transmission connection with the bolt (210), and the driving piece drives the transmission wheel to rotate through the transmission piece;
an overload protection piece is arranged between the driving piece and the driving wheel or between the driving wheel and the door bolt (210), and when the door bolt (210) is clamped on a wafer box cover, the overload protection piece blocks the driving piece from transmitting power to the door bolt (210).
2. The door opening mechanism according to claim 1, wherein the number of the door opening assemblies (200) is two, and the transmission member is in transmission connection with the transmission wheels in the two door opening assemblies (200).
3. The door uncovering mechanism according to claim 2, wherein said transmission wheel comprises pulleys (220), said transmission member comprises a synchronous belt (300), said synchronous belt (300) is sleeved on two pulleys (220) as said overload protection member, and said driving member is in transmission connection with said synchronous belt (300).
4. The door uncovering mechanism according to claim 3, wherein a bolt support seat (110) is arranged on the cover uncovering panel (100), the bolt (210) is respectively and rotatably connected with the cover uncovering panel (100) and the bolt support seat (110), and the belt wheel (220) is positioned between the cover uncovering panel (100) and the bolt support seat (110) and is fixedly sleeved on the bolt (210).
5. The door uncovering mechanism according to claim 3, characterised in that the driving member comprises a cylinder (400), and the driving end of the cylinder (400) is connected with the synchronous belt (300) through a fixing component (500).
6. The door uncovering mechanism according to claim 5, characterised in that the fixing assembly (500) comprises a base (510), an adjusting head (520), a first pressing plate (530) and a second pressing plate (540), the driving end of the air cylinder (400) is connected with the base (510), the adjusting head (520) is adjustably connected with the base (510) along the length direction of the synchronous belt (300), the first pressing plate (530) is detachably connected with the base (510), the second pressing plate (540) is detachably connected with the adjusting head (520), and one side of the synchronous belt (300) is located between the first pressing plate (530) and the base (510) and between the second pressing plate (540) and the adjusting head (520).
7. The door-opening mechanism according to claim 6, characterized in that the base (510) is provided with an adjusting through hole (511) having an axis parallel to the length direction of the timing belt (300), the adjusting head (520) is provided with a threaded hole (521) coaxial with the adjusting through hole (511), and an adjusting bolt passes through the adjusting through hole (511) to be engaged with the threaded hole (521).
8. The door release mechanism according to claim 6, wherein the door release panel (100) is provided with a guide rail (610) extending in a length direction of the timing belt (300), and the base (510) is provided with a slider (620) slidably engaged with the guide rail (610).
9. The door release mechanism according to any one of claims 6 to 8, further comprising a buffer (700), wherein the buffer (700) is provided on a side of the base (510) facing away from the cylinder (400).
10. The door release mechanism according to claim 9, wherein the bumper (700) is adjustably coupled to the door release panel (100) to adjust a distance between the bumper (700) and the base (510).
CN202023347846.2U 2020-12-31 2020-12-31 Cover opening mechanism Active CN213483731U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023347846.2U CN213483731U (en) 2020-12-31 2020-12-31 Cover opening mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023347846.2U CN213483731U (en) 2020-12-31 2020-12-31 Cover opening mechanism

Publications (1)

Publication Number Publication Date
CN213483731U true CN213483731U (en) 2021-06-18

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ID=76357813

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023347846.2U Active CN213483731U (en) 2020-12-31 2020-12-31 Cover opening mechanism

Country Status (1)

Country Link
CN (1) CN213483731U (en)

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