阅读说明：本技术 一种运输设备 (Transportation equipment ) 是由 任劲峰 于 2021-09-17 设计创作，主要内容包括：本申请涉及一种运输设备,其包括托盘,还包括：上料推车,其用于推送托盘；设于上料推车下游方向的第一传输线组件,其包括第一安装框架；设于第一安装框架内的顶升板组件,其包括顶升板和驱使顶升板升降的第二升降组件；第二传输线组件；转角运输组件,其包括圆盘和驱使圆盘转动的驱动单元以及设于圆盘上的直线运输组件,直线运输组件包括上游端和下游端；升降块,其活动贯穿圆盘；其中,当驱动单元驱使圆盘转动,使得上游端与第一传输线组件对接,或使得下游端与第二传输线组件对接,当托盘被运输至直线运输组件上时,升降块伸出圆盘的顶部。通过上述方式,本申请中的运输设备具有运输稳定、结构牢固可靠的优点。(The application relates to a transportation equipment, it includes the tray, still includes: the feeding trolley is used for pushing the tray; the first transmission line assembly is arranged in the downstream direction of the feeding trolley and comprises a first mounting frame; the jacking plate assembly is arranged in the first mounting frame and comprises a jacking plate and a second lifting assembly for driving the jacking plate to lift; a second transmission line assembly; the corner conveying assembly comprises a disc, a driving unit for driving the disc to rotate and a linear conveying assembly arranged on the disc, wherein the linear conveying assembly comprises an upstream end and a downstream end; the lifting block movably penetrates through the disc; when the driving unit drives the disc to rotate, the upstream end is in butt joint with the first transmission line assembly, or the downstream end is in butt joint with the second transmission line assembly, and when the tray is conveyed to the linear conveying assembly, the lifting block extends out of the top of the disc. Through the mode, the transportation equipment in this application has the advantage that the transportation is stable, sound construction is reliable.)

1. A transport apparatus comprising a tray (540), characterized in that it further comprises:

a loading trolley for pushing the tray (540);

the first transmission line assembly is arranged in the downstream direction of the feeding trolley and comprises a first mounting frame (460);

a jacking plate assembly (500) arranged in the first mounting frame (460), and comprising a jacking plate (510) for jacking the tray (540) and a second lifting assembly (600) for driving the jacking plate (510) to lift;

the second transmission line assembly is vertically distributed with the first transmission line assembly;

the corner transportation assembly is used for connecting the first transmission line assembly and the second transmission line assembly and comprises a disc (750), a driving unit (710) for driving the disc (750) to rotate and a linear transportation assembly (800) arranged on the disc (750), wherein the linear transportation assembly (800) comprises an upstream end (811) and a downstream end (812);

a lifting block (910) respectively arranged at the upstream end (811) and the downstream end (812), and movably penetrates through the disc (750);

wherein when the driving unit (710) rotates the circular disk (750) such that the upstream end (811) is butted against the first transfer line assembly or the downstream end (812) is butted against the second transfer line assembly, the lifting block (910) protrudes from the top of the circular disk (750) when the tray (540) is transported onto the linear transport assembly (800).

2. The transport apparatus according to claim 1, wherein the feeding cart comprises a feeding trolley (300) and a feeding assembly (100) disposed above the feeding trolley (300), and a first lifting assembly (200) connecting the feeding trolley (300) and the feeding assembly (100), wherein the feeding assembly (100) comprises a feeding plate (110) and a conveying channel (120) disposed at the top of the feeding plate (110).

3. The transportation apparatus of claim 2, wherein the first lifting assembly (200) comprises a scissor lift unit (210) and a manual cylinder unit (220) for driving the scissor lift unit (210) to lift, wherein the manual cylinder unit (220) comprises a manual cylinder (221), and wherein a first output shaft (2211) of the manual cylinder (221) is connected to the scissor lift unit (210).

4. A transporting apparatus as claimed in claim 3, wherein said first transporting line assembly further comprises first roller units (470) symmetrically disposed at both inner sides of said first mounting frame (460) and a driving unit (400) for driving said first roller units (470) to rotate synchronously.

5. The transportation apparatus as claimed in claim 4, wherein the first roller unit (470) includes a plurality of first rollers (471) distributed along a length direction of the mounting frame (460), the transmission unit (400) further includes a transmission wheel unit (410) connected to the first rollers (471) and a transmission shaft (420) for driving the transmission wheel unit (410) to rotate, the first transmission line assembly further includes a motor (450) disposed on one side of the first mounting frame (460), a second output shaft (451) of the motor (450) drives the transmission shaft (420) on the same side to rotate, and the transmission wheel unit (410) disposed on one side of the first mounting frame (460) drives the transmission wheel unit (410) disposed on the other side of the mounting frame (460) to rotate synchronously via a first connection shaft (430).

6. The transportation apparatus as claimed in claim 4, wherein the feeding cart further comprises a block unit (150) disposed on one side of the feeding plate (110) close to the first mounting frame (460), the block unit (150) comprises a first mounting plate (151) connected to the top of the feeding plate (110), a block (152) movably penetrating through the first mounting plate (151), and a mounting seat (153) rotatably connected to the block (152), wherein the first mounting frame (460) is connected to a position limiting unit (480) engaged with the block unit (150).

7. The transportation apparatus of claim 6, wherein the position limiting unit (480) comprises a second mounting plate (481) provided at the bottom of the first mounting frame (460) and a plurality of positioning pins (482) provided at the top of the second mounting plate (481) and a check unit (490) provided at the top of the second mounting plate (481), wherein the first mounting plate (151) is provided with an engaging part (160) engaged with the positioning pin (482), the check unit (490) comprises a second mounting seat (491) and a check plate (492) rotationally connected with the second mounting seat (491), when the feeding trolley is butted with the first transmission line assembly, the second mounting seat (491) is butted with the bottom of the stop block (152), so that the tray (540) is transported to the first roller unit (470) through the conveying path (120).

8. The transportation apparatus of claim 1, wherein the second lifting assembly (600) comprises a telescopic cylinder (610) and a rail unit (620) connected to a piston rod (611) of the telescopic cylinder (610), the rail unit (620) comprises a lifting ramp (640), wherein the lifting plate assembly (500) further comprises a second roller unit (520) disposed at the bottom of the lifting plate (510), the second roller unit (520) is movably disposed on the ramp (640), and the second roller unit (520) moves up and down in response to the horizontal reciprocating movement of the rail unit (620) to lift the lifting plate (510).

9. The transport apparatus of claim 1, wherein the linear transport assembly (800) comprises a pair of parallel linear guides (810) and a roller transfer unit (820) disposed between the pair of linear guides (810) and a driving motor (830) for driving the roller transfer unit (820) to rotate.

10. The transportation apparatus of claim 1, wherein the driving unit (710) comprises a turntable motor (711), the turntable motor (711) comprising a motor body (7111) and a third output shaft (7112), wherein the motor body (7111) is connected to the bottom of the circular disc (750), and the corner transportation assembly comprises a gear set (720) connected to the third output shaft (7112) and a housing (730) for mounting the gear set (720).

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of automation equipment, in particular to transportation equipment.

[ background of the invention ]

A transport apparatus is a machine that frictionally drives material in a continuous manner. By using the material conveying device, the materials can be conveyed on a certain conveying line from an initial feeding point to a final discharging point to form a material conveying flow path. The conveying device can be used for conveying both broken materials and finished articles. Besides pure material conveying, the device can also be matched with the requirements of the technological process in the production flow of each industrial enterprise to form a rhythmic line production conveying line. Among the prior art, to the material that line production transportation equipment can lead to the transportation in the transportation break away from the guide rail, have the transportation unstability, predetermine the inconvenient defect of station operation. Therefore, there is a need to develop a transportation apparatus.

[ summary of the invention ]

The application aims to provide a transportation device which has the advantages of stable transportation and firm and reliable structure.

The purpose of the application is realized by the following technical scheme: a transport apparatus comprising a tray, further comprising: the feeding trolley is used for pushing the tray; the first transmission line assembly is arranged in the downstream direction of the feeding trolley and comprises a first mounting frame; the jacking plate assembly is arranged in the first mounting frame and comprises a jacking plate for jacking the tray and a second lifting assembly for driving the jacking plate to lift; the second transmission line assembly is vertically distributed with the first transmission line assembly; the corner transportation assembly is used for connecting the first transmission line assembly and the second transmission line assembly and comprises a disc, a driving unit for driving the disc to rotate and a linear transportation assembly arranged on the disc, and the linear transportation assembly comprises an upstream end and a downstream end; the lifting blocks are respectively arranged at the upstream end and the downstream end and movably penetrate through the disc; when the driving unit drives the disc to rotate, the upstream end is in butt joint with the first transmission line assembly, or the downstream end is in butt joint with the second transmission line assembly, and when the tray is conveyed to the linear conveying assembly, the lifting block extends out of the top of the disc.

Preferably, the feeding cart comprises a feeding trolley, a feeding assembly arranged above the feeding trolley, and a first lifting assembly connected with the feeding trolley and the feeding assembly, wherein the feeding assembly comprises a feeding plate and a conveying channel arranged at the top of the feeding plate.

Preferably, the first lifting assembly comprises a scissor type lifting unit and a manual cylinder unit for driving the scissor type lifting unit to lift, wherein the manual cylinder unit comprises a manual cylinder, and a first output shaft of the manual cylinder is connected with the scissor type lifting unit.

Preferably, the first transmission line assembly further comprises first roller units symmetrically arranged on two inner sides of the first mounting frame and a transmission unit driving the first roller units to rotate synchronously.

Preferably, the first roller unit comprises a plurality of first rollers distributed along the length direction of the installation frame, the transmission unit further comprises a transmission wheel unit connected with the first rollers and a transmission shaft driving the transmission wheel unit to rotate, the first transmission line assembly further comprises a motor arranged on one side of the first installation frame, a second output shaft of the motor drives the transmission shaft to rotate on the same side of the motor, and the transmission wheel unit arranged on one side of the first installation frame drives the transmission wheel unit arranged on the other side of the installation frame to rotate synchronously through a first connecting shaft.

Preferably, the feeding cart further comprises a stop block unit arranged on one side of the feeding plate close to the first installation frame, the stop block unit comprises a first installation plate connected to the top of the feeding plate, a stop block movably penetrating through the first installation plate, and an installation seat rotatably connected with the stop block, and the first installation frame is connected with a limiting unit matched with the stop block unit.

Preferably, spacing unit is including locating the second mounting panel of first mounting frame bottom with locate a plurality of locating pins at second mounting panel top and locating the non return unit at second mounting panel top, wherein, first mounting panel be equipped with the block portion of locating pin looks block, the non return unit include the second mount pad and with the second mount pad rotates the check board of being connected, works as the material loading shallow with when the first transmission line subassembly is docked mutually, the second mount pad with the bottom butt of dog is mutually held, thereby makes the tray pass through transfer passage transports to on the first gyro wheel unit.

Preferably, the second lifting assembly comprises a telescopic cylinder and a slide rail unit connected with a piston rod of the telescopic cylinder, the slide rail unit comprises a rising ramp, the jacking plate assembly further comprises a second roller unit arranged at the bottom of the jacking plate, the second roller unit is movably arranged on the ramp, and the second roller unit moves up and down in response to the horizontal reciprocating motion of the slide rail unit, so that the jacking plate is lifted and lowered.

Preferably, the linear transportation assembly comprises a pair of linear guide rails arranged in parallel, a roller conveying unit arranged between the pair of linear guide rails, and a driving motor driving the roller conveying unit to rotate.

Preferably, the driving unit includes a turntable motor, the turntable motor includes a motor body and a third output shaft, wherein the motor body is connected to the bottom of the disc, and the corner transportation assembly includes a gear set connected to the third output shaft and a base for mounting the gear set.

Compared with the prior art, the method has the following beneficial effects:

the application provides a transportation equipment, it passes through the material loading shallow tray of sending, the material loading shallow docks with first transmission line subassembly, predetermine the processing of station through the jacking board subassembly, the conversion of rethread corner transportation subassembly for the tray is transported to the second transmission line subassembly on, the elevator is used for making the tray difficult for breaking away from sharp transportation subassembly when rotating, the modularized design, be convenient for processing and maintenance, have the transportation stable, the firm in structure is reliable advantage.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the transport apparatus proposed in the present application;

FIG. 2 is a schematic structural view of the loading cart of FIG. 1;

FIG. 3 is a schematic structural view of the first lift assembly of FIG. 2;

FIG. 4 is a schematic structural view of the first transmission line assembly of FIG. 1;

FIG. 5 is a schematic structural view of the transmission unit of FIG. 4;

FIG. 6 is a schematic structural view of the stopper unit of FIG. 1;

FIG. 7 is a schematic structural view of the stopper unit and the stopper unit of FIG. 1;

FIG. 8 is a schematic structural view of the second lift assembly of FIG. 1;

FIG. 9 is a schematic illustration of the construction of the jacking plate assembly of FIG. 1;

FIG. 10 is a schematic structural view of the corner transport assembly of FIG. 1;

FIG. 11 is an exploded view of the disk and the rotating member for actuating the disk of FIG. 1;

FIG. 12 is an exploded view of the roller conveying unit and the driving motor of FIG. 1;

FIG. 13 is a schematic structural view of the lifting block and the lifting member for driving the lifting block to lift in FIG. 1;

fig. 14 is a structural view in the rear view direction of fig. 13.

In the figure, 100-the loading assembly; 110-feeding plate; 120-a transport channel; 150-a stopper unit; 151-first mounting plate; 152-a stop; 153-a mount; 160-a clamping part; 200-a first lifting assembly; 210-scissor lift unit; 211-hinge plate; 2111-first hinge plate; 2112-second hinge plate; 212-a first articulated shaft; 213-a second articulated shaft; 214-a connecting plate; 220-a manual cylinder unit; 221-a manual cylinder; 2211 — a first output shaft; 223-a third mounting plate; 300-a feeding trolley; 400-a transmission unit; 410-a transmission wheel unit; 411-a first gear; 412-a second gear; 413-a second connection shaft; 420-a drive shaft; 430-first connecting shaft; 450-motor; 451-a second output shaft; 460-a first mounting frame; 470-a first roller unit; 471-a first roller; 480-a limiting unit; 481 — second mounting plate; 482-locating pins; 490-a no-return unit; 491-a second mounting seat; 492-a check plate; 500-jacking plate assembly; 510-a jacking plate; 520-a second roller unit; 540-a tray; 600-a second lifting assembly; 610-telescopic cylinder; 611-a piston rod; 620-a slide rail unit; 640-a ramp; 710-a drive unit; 711-turntable motor; 7111-motor body; 7112-a third output shaft; 720-gear set; 721-pinion gear; 722-a bull gear; 730-a stand; 740-a connection unit; 741-a substrate; 742-a connecting column; 750-disc; 800-a linear transport assembly; 810-linear guide rail; 811-upstream end; 812-a downstream end; 820-roller conveying unit; 830-a drive motor; 910-a lifting block; 920-a link unit; 921 — a first movable plate; 922-a second flap; 923-a third movable plate; 924-a connecting block; 925-ball bearing; 926-a spring; 930 — contact block.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As shown in fig. 1 to 14, a transportation apparatus includes a tray 540, and further includes: a feeding cart for pushing the tray 540; the first transmission line assembly is arranged in the downstream direction of the feeding trolley and comprises a first mounting frame 460; a lifting plate assembly 500 provided in the first mounting frame 460, which includes a lifting plate 510 for lifting the tray 540 and a second lifting assembly 600 for driving the lifting plate 510 to be lifted; the second transmission line component is vertically distributed with the first transmission line component; a corner transporting assembly for connecting the first transmission line assembly and the second transmission line assembly, which comprises a disc 750, a driving unit 710 for driving the disc 750 to rotate, and a linear transporting assembly 800 arranged on the disc 750, wherein the linear transporting assembly 800 comprises an upstream end 811 and a downstream end 812; a lifting block 910, which is movably disposed at the upstream end 811 and the downstream end 812, respectively, and penetrates the disc 750; wherein, when the driving unit 710 drives the disk 750 to rotate, such that the upstream end 811 is in butt joint with the first transmission line assembly, or such that the downstream end 812 is in butt joint with the second transmission line assembly, the lifting block 910 extends out of the top of the disk 750 when the tray 540 is transported onto the linear transport assembly 800.

In this way, it passes through the material loading shallow tray 540 that holds in the palm, the material loading shallow docks with first transmission line subassembly, predetermine the processing of station through jacking board subassembly 500, the conversion of rethread corner transportation subassembly for tray 540 transports to the second transmission line subassembly on, elevator 910 is used for making the tray difficult break away from sharp transportation subassembly 800 when rotating, the modularized design, be convenient for processing and maintenance, it is stable to have the transportation, the firm in structure is reliable advantage.

Further, the feeding cart comprises a feeding trolley 300, a feeding assembly 100 arranged above the feeding trolley 300, and a first lifting assembly 200 connecting the feeding trolley 300 and the feeding assembly 100, wherein the feeding assembly 100 comprises a feeding plate 110 and a conveying channel 120 arranged at the top of the feeding plate 110.

Further, the first lifting assembly 200 comprises a scissor type lifting unit 210 and a manual cylinder unit 220 for driving the scissor type lifting unit 210 to lift, wherein the manual cylinder unit 220 comprises a manual cylinder 221, a first output shaft 2211 of the manual cylinder 221 is connected with the scissor type lifting unit 210, the scissor type lifting unit 210 is driven to lift by the first output shaft 2211 of the manual cylinder 221, so as to drive the feeding plate 110 to lift, and the conveying channel 120 is used for conveying materials to be fed.

Further, the feeding cart 300 includes a cart body 310 and universal wheels 320 disposed at the bottom of the cart body 310.

Further, the trolley body 310 comprises a pair of cross beams 311 and a pair of vertical beams 312, wherein the cross beams 311 and the vertical beams 312 are vertically welded, the manual cylinder unit 220 further comprises a third mounting plate 223 for mounting the manual cylinder 221, and the third mounting plate 223 is arranged between the pair of cross beams 311.

Further, the scissor lift unit 210 comprises a pair of hinge plates 211 movably connecting the feeding plate 110 and the cross beam 311 and a first hinge shaft 212 connecting the hinge centers of the pair of hinge plates 211, wherein the hinge plates 211 comprise a first hinge plate 2111 and a second hinge plate 2112 which are hinged with each other, and both ends of the first hinge plate 2111 and the second hinge plate 2112 are respectively connected with the feeding plate 110 and the cross beam 311 in a rotating manner.

Further, the scissor-type lifting unit 210 further comprises a second hinge shaft 213 connected with the first output shaft 2211 and a connecting plate 214 rotatably connected with the second hinge shaft 213, the connecting plate 214 is fixedly connected with the first hinge plate 2111, and the first output shaft 2211 drives the scissor-type lifting unit 210 to lift through the second hinge shaft 213, so that the scissor-type lifting unit has the advantages of convenience in processing and easiness in implementation.

Further, the first transmission line assembly further includes first roller units 470 symmetrically disposed at two inner sides of the first mounting frame 460, and a transmission unit 400 driving the first roller units 470 to rotate synchronously.

Further, the first roller unit 470 includes a plurality of first rollers 471 distributed along the length direction of the mounting frame 460, the transmission unit 400 further includes a transmission wheel unit 410 connected with the first rollers 471 and a transmission shaft 420 driving the transmission wheel unit 410 to rotate, the first transmission line assembly further includes a motor 450 disposed on one side of the first mounting frame 460, a second output shaft 451 of the motor 450 drives the transmission shaft 420 on the same side to rotate, the transmission wheel unit 410 disposed on one side of the first mounting frame 460 drives the transmission wheel unit 410 disposed on the other side of the mounting frame 460 to rotate synchronously through the first connection shaft 430, and the transmission device has the advantages of compact structure and stable transmission.

Further, the driving wheel unit 410 includes a first gear 411 sleeved on an outer wall of the transmission shaft 420 and a second gear 412 engaged with the first gear 411, wherein the second gear 412 is connected to the first roller 471 through a second connection shaft 413, and the first connection shaft 430 is disposed between a pair of first rollers 471 oppositely disposed.

Further, the feeding cart further comprises a stopper unit 150 disposed on one side of the feeding plate 110 close to the first mounting frame 460, the stopper unit 150 comprises a first mounting plate 151 connected to the top of the feeding plate 110, a stopper 152 movably penetrating through the first mounting plate 151, and a mounting seat 153 rotatably connected to the stopper 152, wherein the first mounting frame 460 is connected to a limiting unit 480 engaged with the stopper unit 150.

Further, the limiting unit 480 comprises a second mounting plate 481 arranged at the bottom of the first mounting frame 460, a plurality of positioning pins 482 arranged at the top of the second mounting plate 481, and a check unit 490 arranged at the top of the second mounting plate 481, wherein the first mounting plate 151 is provided with a clamping part 160 clamped with the positioning pins 482, the check unit 490 comprises a second mounting seat 491 and a check plate 492 rotatably connected with the second mounting seat 491, and when the feeding cart is butted with the first transmission line assembly, the second mounting seat 491 is butted with the bottom of the check block 152, so that the tray 540 is transported to the first roller unit 470 through the transporting channel 120.

Further, the second lifting assembly 600 includes a telescopic cylinder 610 and a sliding rail unit 620 connected to a piston rod 611 of the telescopic cylinder 610, the sliding rail unit 620 includes a rising ramp 640, wherein the lifting plate assembly 500 further includes a second roller unit 520 disposed at the bottom of the lifting plate 510, the second roller unit 520 is movably disposed on the ramp 640, and the second roller unit 520 moves up and down in response to the horizontal reciprocating motion of the sliding rail unit 620, so as to lift the lifting plate 510.

Further, the linear transport assembly 800 includes a pair of linear rails 810 arranged in parallel, a roller transfer unit 820 disposed between the pair of linear rails 810, and a driving motor 830 for driving the roller transfer unit 820 to rotate, wherein an upstream end 811 and a downstream end 812 are respectively disposed at both ends of the linear rails 810.

Further, the driving unit 710 includes a turntable motor 711, and the turntable motor 711 includes a motor body 7111 and a third output shaft 7112, wherein the motor body 7111 is connected to the bottom of the circular disc 750, and the corner transportation assembly includes a gear set 720 connected to the third output shaft 7112 and a base 730 for mounting the gear set 720.

The gear set 720 includes a small gear 721 sleeved on the third output shaft 7112 and a large gear 722 engaged with the small gear 721, wherein the large gear 722 is connected with the base 730.

Further, the turntable assembly 700 further includes a connection unit 740 connecting the disk 750 and the link unit 920, the connection unit 740 includes a base plate 741 disposed between the disk 750 and the bottom plate 731 and a connection column 742 connecting the disk 750 and the base plate 741, the link unit 920 is connected to the base plate 741, and the disk 750 and the link unit 920 rotate synchronously via the base plate 741.

Further, the link unit 920 includes a first movable plate 921 and a second movable plate 922, and a third movable plate 923 movably connecting the first movable plate 921 and the second movable plate 922, wherein the first movable plate 921 and the second movable plate 922 are respectively movably connected to the lifting block 910, the first movable plate 921 is connected to the base plate 741 through the connecting block 924, the first movable plate 921 abuts against the contact block 930, and the link unit 920 and the lifting block 910 are connected in a linkage manner, so that the link unit 920 drives the lifting block 910 to lift.

Further, the link unit 920 further includes a ball bearing 925 disposed between the first movable plate 921 and the contact block 930, and the ball bearing 925 movably abuts against the contact block 930, so that friction between the first movable plate 921 and the contact block 930 is reduced, and movement is smoother.

Further, the link unit 920 further includes a spring 926 connecting the first movable plate 921 and the second movable plate 922.

The above is only one specific embodiment of the present application, and any other modifications based on the concept of the present application are considered as the protection scope of the present application.