CN108922264B - English learning machine - Google Patents
English learning machine Download PDFInfo
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- CN108922264B CN108922264B CN201811001204.1A CN201811001204A CN108922264B CN 108922264 B CN108922264 B CN 108922264B CN 201811001204 A CN201811001204 A CN 201811001204A CN 108922264 B CN108922264 B CN 108922264B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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Abstract
The invention discloses an English learning machine, which comprises a main machine body, a cover plate and an annular damper, wherein the cover plate can rotate relative to the main machine body and can be switched between a closed state and an open state, the annular damper is arranged on the main machine body and is used for applying damping force to the cover plate in the process that the cover plate is switched to the closed state, and the cover plate is connected with the annular damper through a pivot shaft. According to the English learning machine, the annular damper is arranged, so that damage caused by quick closing of the cover plate can be avoided, and the service life of the English learning machine is prolonged.
Description
Technical Field
The invention belongs to the technical field of educational appliances, and particularly relates to an English learning machine.
Background
Today, learning is increasingly networked, digital learning is particularly important, and learning resources available for multimedia learning are more. Most english learning machines can satisfy user's basic demand at present, but do not consider user's individualized use habit, for example, english learning machine speed and dynamics problem open and shut. The different dynamics that open and shut of can not select according to user's use habit of current english learning machine, adaptability is poor, and when the apron of english learning machine was closed moreover, if the speed can lead to the damage easily.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an English learning machine, and aims to avoid damage caused by quick closing of a cover plate.
In order to achieve the purpose, the invention adopts the technical scheme that: english learning, including the host computer body, for the host computer body rotatable and can switch between closed condition and open mode apron and set up in on the host computer body and be used for the apron switches to the in-process of closed condition and applys the annular damper of damping force to the apron, and the apron is connected with annular damper through the pin joint axle.
The annular damper comprises an outer shell, a rotary disc, a piston, an excitation coil and a power transmission mechanism, wherein the rotary disc is rotatably arranged on the outer shell, the piston is arranged in the outer shell and synchronously rotates with the rotary disc, the excitation coil is arranged on the piston, the power transmission mechanism is connected with the rotary disc and the pivot shaft and is used for transmitting a rotating force generated by the pivot shaft to the rotary disc, and magnetorheological fluid is filled in the outer shell.
The shell body is of an inner hollow circular ring-shaped structure, the inner cavity of the shell body is a circular ring-shaped cavity, and the rotating disc is arranged at the center of the shell body and is coaxially arranged with the shell body.
The piston sets up two, the inside of shell body is equipped with two baffles, and two baffles separate into two stock solution chambeies with the interior cavity of shell body, have a piston in each stock solution chamber respectively.
The power transmission mechanism comprises a first rotating shaft connected with the pivot shaft, a first gear arranged on the first rotating shaft, a second rotating shaft parallel to the first rotating shaft, a second gear arranged on the second rotating shaft and meshed with the first gear, a swing rod connected with the second rotating shaft and a sliding block rotatably connected with the swing rod and slidably connected with the rotating disk.
The first rotating shaft is rotatably arranged on the rotating disc.
And the main machine body is provided with an energy storage spring for applying elastic acting force to the cover plate in the process of switching the cover plate to the open state.
English learning still including set up in on the host computer body and be used for the apron makes apron and host computer body keep the safety lock of relatively fixed when being in the closure state, is equipped with the spring bolt on the apron, the host computer body has lets spring bolt male lockhole, the safety lock including be arranged in pressing from both sides the spring bolt that tightly inserts in the lockhole and can carry out the locking claw that switches between locking position and unblock position.
The locking claw is rotatable set up in on the host computer body, the safety lock still including be used for at the locking claw switch over to the in-process of unblock position to the locking claw provide drive power and be used for at the locking claw switch over to the in-process of locking position to the locking claw provide the locking claw controlling means of resistance, the locking claw controlling means include with the locking claw be connected pass power piece, with pass the uide bushing that power piece is connected, exert the double spring mechanism of elastic force and be used for adjusting the elasticity adjustment mechanism of the size of the elastic force that double spring mechanism applyed the uide bushing.
The double-spring mechanism comprises a first spring and a second spring arranged in the first spring, the elasticity adjusting mechanism comprises an adjusting shaft, a fixed baffle plate, a rotatable control plate, the elastic force adjusting mechanism is arranged on the fixed baffle plate and can be used for controlling the rotary separation blade to rotate between an extending state and a contracting state, the rotary separation blade is connected with the adjusting shaft and is used for controlling the rotary separation blade to rotate, the second spring is arranged between the fixed baffle plate and the guide sleeve, the first spring is arranged between the guide sleeve and the rotary separation blade in the extending state, and the rotary separation blade is provided with a plurality of and all rotary separation blades which are uniformly distributed on the fixed baffle plate along the circumferential direction.
According to the English learning machine, the annular damper is arranged, so that damage caused by quick closing of the cover plate can be avoided, and the service life of the English learning machine is prolonged.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic diagram of the English learning machine of the present invention;
FIG. 2 is a schematic structural view of a cover plate;
FIG. 3 is a schematic view of the construction of the annular damper;
FIG. 4 is a cross-sectional view of the annular damper;
FIG. 5 is a schematic view of the internal structure of the annular damper;
FIG. 6 is a schematic structural view of the power transmission mechanism;
FIG. 7 is a schematic diagram of the safety lock;
FIG. 8 is a schematic view of the position of the security lock on the main body;
FIG. 9 is a schematic view showing a coupling structure of two locking pawls;
FIG. 10 is a schematic view of the construction of the pawl control mechanism;
FIG. 11 is a schematic view of a partial structure of the pawl control device;
FIG. 12 is a schematic view of the structure of the fixed stop;
FIG. 13 is a schematic view of the connection structure of the control plate and the rotary baffle;
FIG. 14 is a schematic view of the engagement of the rotary catch with the bar;
FIG. 15 is a schematic structural view of a dual spring mechanism;
FIG. 16 is a schematic structural view of the self-locking mechanism;
FIG. 17 is a schematic view of the self-locking mechanism at another angle;
labeled as: 1. a cover plate; 2. a main body; 3. a safety lock; 301. a locking pawl; 302. a first spring; 303. a second spring; 304. an adjustment shaft; 305. a control panel; 306. rotating the baffle plate; 307. a stop lever; 308. a force transfer member; 309. a guide sleeve; 310. a third rotating shaft; 311. a driving gear; 312. a driven gear; 313. fixing a baffle plate; 4. a display screen; 5. an annular damper; 501. an outer housing; 502. a piston; 503. a rotating disk body; 504. rotating the rod; 505. a first gear; 506. a second gear; 507. a first rotating shaft; 508. a second rotating shaft; 509. a slider; 510. a swing rod; 511. a connecting rod; 6. an energy storage spring; 7. a latch bolt; 8. a lock hole; 9. a self-locking mechanism; 901. fixing a sleeve; 902. a fixing plate; 903. a rotating plate; 904. a self-locking slide block; 905. a locking block; 906. a return spring; 907. a control lever; 908. a connecting rod; 909. and unlocking the driving block.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1 and 2, the present invention provides an english learning machine, which includes a main body 2, a cover plate 1 rotatable with respect to the main body 2 and switchable between a closed state and an open state, and a ring damper 5 provided on the main body 2 and configured to apply a damping force to the cover plate 1 during switching of the cover plate 1 to the closed state, wherein the cover plate 1 is connected to the ring damper 5 through a pivot shaft.
Specifically, as shown in fig. 1 and 2, the cover plate 1 is rotatably connected to the main body 2 through a pivot shaft, the cover plate 1 is fixedly connected to the pivot shaft, and the main body 2 has a shaft hole into which the pivot shaft is inserted. The display screen 4 is arranged on the cover plate 1, the cover plate 1 can rotate up and down relative to the main machine body 2, and the rotating center line of the cover plate 1 is parallel to the length direction of the cover plate. When the cover plate 1 is in a closed state, the included angle between the cover plate 1 and the main machine body 2 is 0 degree; when the cover plate 1 is in an open state, the included angle between the cover plate 1 and the main body 2 is greater than 0 degree. When using the english learning machine, it is necessary to open and hold the cover plate 1 at an appropriate angle. Be equipped with parts such as central processing unit and memory in the host computer body 2, be provided with on the host computer body 2 and press the key region for control english learning.
As shown in fig. 1 to 6, the annular damper 5 is disposed inside the main body 2, and the annular damper 5 applies a damping force to the pivot shaft, so that the pivot shaft and the cover plate 1 are integrally connected, and the annular damper 5 can provide the damping force to the cover plate 1 when the cover plate 1 is switched to the closed state. The annular damper 5 comprises an outer shell 501, a rotary disc rotatably arranged on the outer shell 501, a piston 502 arranged in the outer shell 501 and rotating synchronously with the rotary disc, an excitation coil arranged on the piston 502, and a power transmission mechanism connected with the rotary disc and the pivot shaft and used for transmitting a rotary force generated by the pivot shaft to the rotary disc, wherein the outer shell 501 is filled with magnetorheological fluid. The outer shell 501 is fixedly connected with the main body 2, the outer shell 501 is of an internal hollow circular ring-shaped structure, the outer shell 501 and the pivot shaft are coaxially arranged, an inner cavity of the outer shell 501 is a circular ring-shaped cavity, the rotating disc is arranged at the center of the outer shell 501, and the rotating disc and the outer shell 501 are coaxially arranged. The exciting coil needs to be energized, and when the exciting coil is energized, a magnetic field is generated in the outer housing 501, so that the ring damper 5 can generate a certain damping force. At 1 closed in-process of apron, the pin joint axle rotates, the pin joint axle passes through power transmission mechanism with revolving force transmission to rotary disk, so that the rotary disk rotates, the rotary disk drives piston 502 and is rotary motion, be full of damping fluid in the shell body 501, it can be that damping fluid becomes thick to move when the excitation coil of circular telegram in damping fluid, thereby make annular damper 5 produce the damping force, reach the effect of slowing down to apron 1, thereby can avoid leading to the damage because of apron 1 closes fast, avoid producing the striking between apron 1 and the host computer body 2, make the closed action comparatively soft, improve english learning machine's life.
As shown in fig. 3 to 6, the outer casing 501 is a complete circular ring structure as a whole, the cross section of the outer casing 501 (the cross section is a plane parallel to the axis of the outer casing 501) is also circular, the shape of the piston 502 is matched with the shape of the outer casing 501, the piston 502 is an arc structure as a whole, the radian of the piston 502 is less than 180 degrees, the piston 502 and the outer casing 501 are coaxially arranged, the cross section of the piston 502 (the cross section is a plane parallel to the axis of the piston 502) is circular, and a gap is formed between the outer circumferential surface of the piston 502 and the inner circumferential surface of the outer casing 501, and the gap forms a damping channel for the magnetorheological fluid to pass through. Piston 502 sets up two, and shell body 501's inside is equipped with two baffles, and two baffles separate into two stock solution chambeies with shell body 501's interior cavity, have a piston 502 in each stock solution chamber respectively, are full of magnetorheological suspensions in the stock solution chamber, and two stock solution chambeies are kept apart through the baffle, do not communicate between two stock solution chambeies. The volume size in two stock solution chambeies is the same, and two baffles are for following circumference evenly distributed in the inside of shell 501, and two pistons 502 also are for following circumference evenly distributed in the inside of shell 501, all have excitation coil on two pistons 502, improve the speed reduction effect to apron 1 when closed. The rotary disk is located the centre bore of shell body 501, and the rotary disk is located between two pistons 502, two pistons 502 and rotary disk fixed connection, and the part embedding of rotary disk is in the interior cavity of shell body 501 to be connected with piston 502, and is corresponding, seals through the sealing washer between rotary disk and the shell body 501, avoids revealing of magnetorheological fluid.
As shown in fig. 3 to 6, the rotating disk includes a rotating disk body 503 and a rotating rod 504 fixedly connected to the rotating disk body 503, the rotating disk body 503 is a circular structure and the rotating disk body 503 is coaxially disposed with the outer housing 501, the rotating disk body 503 is located in a central hole of the outer housing 501, the rotating disk body 503 is located between two pistons 502, the two pistons 502 are fixedly connected to the rotating disk body 503, a portion of the rotating disk body 503 is embedded in an inner cavity of the outer housing 501 to be connected to the pistons 502, and accordingly, the rotating disk body 503 and the outer housing 501 are sealed by a sealing ring, so as to prevent leakage of the magnetorheological fluid. The rotating rod 504 is a long straight rod, the length of the rotating rod 504 is smaller than the maximum diameter of the rotating disk body 503, the middle point of the rotating rod 504 in the length direction is located on the axis of the rotating disk body 503, the length direction of the rotating rod 504 is perpendicular to the axis of the rotating disk body 503, and two ends of the rotating rod 504 are fixedly connected with the rotating disk body 503. The power transmission mechanism is connected with the rotating rod 504 and the pivot shaft, and comprises a first rotating shaft 507 connected with the pivot shaft, a first gear 505 arranged on the first rotating shaft 507, a second rotating shaft 508 parallel to the first rotating shaft 507, a second gear 506 arranged on the second rotating shaft 508 and meshed with the first gear 505, a swing rod 510 connected with the second rotating shaft 508, and a sliding block 509 rotatably connected with the swing rod 510 and slidably connected with the rotating disk. The first rotating shaft 507 is rotatably disposed on the rotating disk, the rotating rod 504 is disposed at one side of the first gear 505, the pivot axis is fixedly connected to one end of the first rotating shaft 507 and is coaxial with the first rotating shaft, the other end of the first rotating shaft 507 is rotatably connected to the rotating rod 504 at a middle position in the length direction of the rotating rod 504, and the pivot axis is coaxial with the rotating disk body 503. The first gear 505 is fixedly arranged on the first rotating shaft 507, the first gear 505 and the first rotating shaft 507 are coaxially arranged, the second rotating shaft 508 is positioned below the rotating rod 504, the second gear 506 is fixedly arranged on the second rotating shaft 508, the first gear 505 and the second gear 506 are positioned on the same side of the rotating rod 504, and the first gear 505 and the second gear 506 are meshed. One end of the swing rod 510 is fixedly connected with the second rotating shaft 508, the other end of the swing rod 510 is rotatably connected with the slider 509, the slider 509 is sleeved on the rotating rod 504, the slider 509 can move along the length direction of the rotating rod 504 relative to the rotating rod 504, and the swing rod 510, the slider 509 and the rotating rod 504 form a swing guide rod mechanism. The connecting rod 511 is located between the rotating rod 504 and the first gear 505, one end of the connecting rod 511 has a through hole for the first rotating shaft 507 to pass through, the other end of the connecting rod 511 has a through hole for the second rotating shaft 508 to pass through, the connecting rod 511 is non-rotatable, the connecting rod 511 is fixed relative to the outer shell 501, and the connecting rod 511 is used for providing a supporting effect for the first rotating shaft 507 and the second rotating shaft 508 so that the first rotating shaft 507 and the second rotating shaft 508 can rotate synchronously. When the pivot shaft rotates, the pivot shaft drives the first rotating shaft 507 to synchronously rotate, the first rotating shaft 507 drives the first gear 505 to rotate, the first gear 505 drives the second gear 506, the second rotating shaft 508 and the swing rod 510 to rotate, the swing rod 510 drives the rotating rod 504 to rotate through the slider 509, and the rotating disk and the piston 502 are further rotated, so that the annular damper 5 generates a damping force, and the effect of reducing the speed of the cover plate 1 is achieved.
As shown in fig. 1 and 2, the main body 2 is provided with an energy storage spring 6 for applying an elastic force to the cover plate 1 to rotate the cover plate 1 in the process of switching the cover plate 1 to the open state, the energy storage spring 6 provides energy when the cover plate 1 is opened, the annular damper 5 can provide a damping force when the cover plate 1 is closed, and the energy storage spring 6 stores energy in the process of closing the cover plate 1. During the opening process of the cover plate 1, the energy storage spring 6 releases the stored energy. The energy storage spring 6 is preferably a volute spiral spring, the energy storage spring 6 is arranged inside the main machine body 2, one end of the energy storage spring 6 is connected with the main machine body 2, and the other end of the energy storage spring 6 is connected with the pivot shaft.
As shown in fig. 1 and 7, the english learning machine of the present invention further includes a safety lock 3 disposed on the main body 2 and configured to keep the cover 1 and the main body 2 relatively fixed when the cover 1 is in the closed state, the cover 1 is provided with a locking tongue 7, the main body 2 is provided with a locking hole 8 into which the locking tongue 7 is inserted, the safety lock 3 includes two locking claws 301 configured to clamp the locking tongue 7 inserted into the locking hole 8 and switchable between a locking position and an unlocking position, the two locking claws 301 are disposed, the two locking claws 301 are matched to clamp the locking tongue 7, the two locking claws 301 are rotatably connected through a third rotating shaft 310, an axis of the third rotating shaft 310 is spatially perpendicular to an axis of the pivot shaft, the two locking claws 301 are disposed on a same straight line parallel to the axis of the pivot shaft, and the locking claws 301 are rotatably disposed inside the main body 2. The lockhole 8 sets up on the top surface of the main engine body 2, and two locking claw 301 are located the below of lockhole 8, and when apron 1 was closed, spring bolt 7 passed behind the lockhole 8 and inserted between two locking claw 301, then by two locking claw 301 clamp tongue 7, two locking claw 301 are in the locking position, realize apron 1 and main engine body 2's relatively fixed, avoid apron 1 to open by oneself.
As shown in fig. 7 to 15, the security lock 3 further includes two pawl control means for providing a driving force to the pawl 301 during switching of the pawl 301 to the unlock position and for providing a resistance force to the pawl 301 during switching of the pawl 301 to the lock position, the two pawl control means being connected to one pawl 301 respectively, and the two pawls 301 being located between the two pawl control means. The locking pawl control device includes a force transmitting member 308 connected to the locking pawl 301, a guide sleeve 309 connected to the force transmitting member 308, a double spring mechanism for applying an elastic force to the guide sleeve 309, and an elastic force adjusting mechanism for adjusting the magnitude of the elastic force applied to the guide sleeve 309 by the double spring mechanism. One end of the locking claw 301 in the length direction is provided with a shaft hole into which the third rotating shaft 310 is inserted, the other end of the locking claw 301 in the length direction is a clamping end for clamping the lock tongue 7, one end of the force transmission piece 308 is rotatably connected with the locking claw 301, the end of the force transmission piece 308 is connected with the locking claw 301 at a position between the two ends of the locking claw 301 in the length direction, the other end of the force transmission piece 308 is connected with the guide sleeve 309, and the guide sleeve 309 is positioned on one side of the locking claw 301. The double-spring mechanism comprises a first spring 302 and a second spring 303 arranged in the first spring 302, the first spring 302 and the second spring 303 are both cylindrical coil springs and compression springs, the diameter of the first spring 302 is larger than that of the second spring 303, the second spring 303 is arranged in a central hole of the first spring 302, the first spring 302 and the second spring 303 are coaxially arranged, and the axes of the first spring 302 and the second spring 303 are spatially vertical to the axis of the third rotating shaft 310. The first spring 302 and the second spring 303 are located between an elasticity adjusting mechanism, which is provided to switch between a first adjusting state and a second adjusting state, and a guide sleeve 309. When the elasticity adjusting mechanism is in the first adjusting state, the elasticity adjusting mechanism is simultaneously abutted against the first spring 302 and the second spring 303, at the moment, the first spring 302 and the second spring 303 are clamped between the elasticity adjusting mechanism and the guide sleeve 309, the first spring 302 and the second spring 303 simultaneously exert elastic acting force on the guide sleeve 309, and the elastic acting force borne by the guide sleeve 309 is the largest; when the elasticity adjusting mechanism is in the second adjusting state, the elasticity adjusting mechanism only abuts against the second spring 303, at this time, the second spring 303 is clamped between the elasticity adjusting mechanism and the guide sleeve 309, only the second spring 303 exerts elastic acting force on the guide sleeve 309, the first spring 302 does not exert elastic acting force on the guide sleeve 309, and the elastic acting force applied to the guide sleeve 309 is the minimum.
As shown in fig. 7 to 15, the elasticity adjusting mechanism includes an adjusting shaft 304, a fixed baffle 313, a rotating baffle 306 rotatably disposed on the fixed baffle 313 and capable of switching between an extended state and a retracted state, and a control board 305 connected to the adjusting shaft 304 and used for controlling the rotating baffle 306 to rotate, the second spring 303 is disposed between the fixed baffle 313 and the guide sleeve 309, the first spring 302 is disposed between the guide sleeve 309 and the rotating baffle 306 in the extended state, the rotating baffle 306 is provided with a plurality of rotating baffles 306, and all the rotating baffles 306 are uniformly distributed on the fixed baffle 313 along the circumferential direction. The fixed baffle 313 is in a disc-shaped structure, the guide sleeve 309 is a cylinder with an opening at one end and a hollow interior, one ends of the first spring 302 and the second spring 303 are inserted into the inner cavity of the guide sleeve 309, the fixed baffle 313 and the guide sleeve 309 are coaxially arranged, the diameter of the fixed baffle 313 is smaller than the inner diameter of the first spring 302, the diameter of the fixed baffle 313 is not smaller than the inner diameter of the second spring 303, and the second spring 303 is clamped between the fixed baffle 313 and the guide sleeve 309. The adjusting shaft 304, the fixed baffle 313 and the guide sleeve 309 are coaxially arranged, the control plate 305 is of a disc-shaped structure, the control plate 305 and the fixed baffle 313 are coaxially arranged, the diameter of the control plate 305 is smaller than that of the fixed baffle 313, the rotary baffle 306 is positioned between the control plate 305 and the fixed baffle 313, and the fixed baffle 313 is positioned between the rotary baffle 306 and the second spring 303. The control plate 305 cooperates with the fixed stop 313 to control the rotary flap 306 to switch between the extended state and the retracted state. When the rotating baffle 306 is in an extending state, the elasticity adjusting mechanism is in a first adjusting state, at the moment, the first spring 302 is clamped between the rotating baffle 306 and the guide sleeve 309, one end of the first spring 302 is abutted against the guide sleeve 309, the other end of the first spring 302 is abutted against all the rotating baffles 306, the second spring 303 is clamped between the fixed baffle 313 and the guide sleeve 309, one end of the second spring 303 is abutted against the guide sleeve 309, and the other end of the second spring 303 is abutted against the fixed baffle 313; when the rotation blocking piece 306 is in the contraction state, the elastic force adjusting mechanism is in the second adjusting state, and the first spring 302 is not in contact with the rotation blocking piece 306.
As shown in fig. 7 to 15, the elastic force adjusting mechanism further includes a driving gear 311 rotatably disposed on the main body 2 and a driven gear 312 engaged with the driving gear 311, a portion of the driving gear 311 is disposed inside the main body 2, another portion of the driving gear 311 is disposed outside the main body 2, so as to facilitate shifting the driving gear 311 to rotate, an axis of the driving gear 311 is parallel to the adjusting shaft 304, the driven gear 312 is fixedly connected to one end of the adjusting shaft 304, the control board 305 is fixedly connected to the other end of the adjusting shaft 304, and the driven gear 312 drives the control board 305 to rotate synchronously through the adjusting shaft 304. The rotary blocking pieces 306 are of arc-shaped block structures, the axes of the rotary blocking pieces 306 are parallel to the axis of the adjusting shaft 304, all the rotary blocking pieces 306 are uniformly distributed on the control plate 305 along the circumferential direction by taking the axis of the adjusting shaft 304 as a central line, one end of each rotary blocking piece 306 is rotatably connected with the control plate 305 through a rotating shaft, the other end of each rotary blocking piece 306 is used for being in contact with the first spring 302, the rotating central line of each rotary blocking piece 306 is parallel to the axis of the adjusting shaft 304, the distance between the end part, rotatably connected with the control plate 305, of each rotary blocking piece 306 and the adjusting shaft 304 is larger than the distance between the other end of each rotary blocking piece 306 and the adjusting shaft 304, and the distance between the end part, rotatably connected with the control plate. When the rotation flap 306 is in the retracted state, the distance between the end of the rotation flap 306 for contact with the first spring 302 and the adjustment shaft 304 is at a minimum; when the rotation flap 306 is in the extended state, the distance between the end of the rotation flap 306 for contact with the first spring 302 and the adjustment shaft 304 is at a maximum. The fixed baffle 313 and the main body 2 are relatively fixed, the fixed baffle 313 is provided with a stop lever 307, and the stop lever 307 is used for stopping the rotating blocking piece 306 and enabling the rotating blocking piece 306 to rotate relative to the control panel 305 when the control panel 305 drives the rotating blocking piece 306 to rotate, so that the rotating blocking piece 306 is switched from a contraction state to an extension state, and finally the rotating blocking piece 306 can be in contact with the first spring 302. The stop rod 307 is located between two adjacent rotation blocking pieces 306 in the circumferential direction, the stop rod 307 is in contact with the inner circular surface of the rotation blocking piece 306 so as to push the rotation blocking piece 306 to rotate, and the length direction of the stop rod 307 is parallel to the axis of the adjusting shaft 304.
At least one of the stop levers 307 is provided, and the stop levers 307 may be provided in the same number as the number of the rotation stoppers 306. When the stop bars 307 are provided in the same number as the number of the rotation stoppers 306, all the stop bars 307 are uniformly distributed on the fixed barrier 313 in the circumferential direction, and each stop bar 307 is located between every two rotation stoppers 306 adjacent in the circumferential direction. When one blocking rod 307 is arranged, when the control panel 305 rotates, the blocking rod 307 is used for contacting with the inner circular surface of one of the rotating blocking pieces 306 and the blocking rod 307 is used for pushing the rotating blocking piece 306 to rotate, the rotating blocking piece 306 can push the other rotating blocking pieces 306 to rotate synchronously, at this time, for two circumferentially adjacent rotating blocking pieces 306, the outer circular surface of one rotating blocking piece 306 contacts with the inner circular surface of the other rotating blocking piece 306, one rotating blocking piece 306 is positioned on the inner side of the other rotating blocking piece 306, the outer rotating blocking piece 306 is pushed by the inner rotating blocking piece 306, finally, all the rotating blocking pieces 306 rotate synchronously, and all the rotating blocking pieces 306 are switched to the extending state synchronously; otherwise, all the rotation flaps 306 can be synchronously switched to the retracted state.
As shown in fig. 7 to 15, the third rotating shaft 310 is located right below the locking hole 8, the third rotating shaft 310 faces the latch 7, when the cover plate 1 is closed, the latch 7 passes through the locking hole 8 and then contacts the third rotating shaft 310, the latch 7 pushes the third rotating shaft 310 to move downward along the guide rail inside the main body 2, and when the third rotating shaft 310 moves downward, the two locking claws 301 are closed, and finally the latch 7 is clamped. During the closing process of the two locking claws 301, the locking claw control device provides resistance to the two locking claws 301 under the action of the spring; in the process of unlocking by opening the two locking claws 301, the locking claw control device provides a certain driving force to the two locking claws 301 by the action of the spring, so that the two locking claws 301 are smoothly opened. The locking claw control device with the structure can realize rotation of the rotary retaining sheet 306 by matching the gear mechanism, the elastic force adjusting mechanism and the double-spring mechanism, so that the number of acting springs can be changed, the rigidity of the double-spring mechanism is changed, opening and closing force of the cover plate 1 during opening and closing can be adjusted by changing different rigidities, adaptability is improved, and good use experience of different users on a learning machine can be met.
As shown in fig. 7, 16 and 17, the main body 2 is provided with a self-locking mechanism 9 for holding the locking pawl 301 at the locking position, and the self-locking mechanism 9 includes a fixed plate 902, a rotating plate 903 rotatably connected to the fixed plate 902, a fixed sleeve 901 provided on the rotating plate 903 and connected to the locking pawl 301, a self-locking slider 904 connected to the fixed plate 902 and the rotating plate 903, two locking blocks 905 rotatably connected to the self-locking slider 904, an unlocking drive block 909 movably provided on the fixed plate 902, a control lever 907 rotatably provided on the main body 2, and a link 908 connected to the control lever 907 and the unlocking drive block 909. The fixing plate 902 is fixedly arranged in the main body 2, one end of the rotating plate 903 is rotatably connected with the fixing plate 902, the other end of the rotating plate 903 is fixedly connected with the fixing sleeve 901, the rotating center line of the rotating plate 903 is parallel to the rotating center line of the locking claw 301, the fixing sleeve 901 is sleeved on one locking claw 301, and the fixing sleeve 901 is connected with the locking claw 301. The rotating plate 903 and the self-locking slider 904 are positioned in the main body 2, the self-locking slider 904 is positioned above the fixed plate 902, one end of the self-locking slider 904 is rotatably connected with the fixed plate 902, the other end of the self-locking slider 904 is slidably connected with the rotating plate 903, the rotating center line of the self-locking slider 904 is parallel to the rotating center line of the rotating plate 903, the rotating plate 903 is provided with a sliding groove for the end of the self-locking slider 904 to be embedded in, and the length direction of the sliding groove is perpendicular to the rotating center line of the. The fixing plate 902 has a slot for the locking block 905 to be inserted into, and the locking block 905 is inserted into the slot to hook the fixing block, so that the fixing plate 902, the self-locking slider 904 and the rotating plate 903 are kept in a relatively fixed state. The locking block 905 is rotatably connected with the self-locking slider 904, the rotating center line of the locking block 905 is perpendicular to the rotating center line of the rotating plate 903 in space, the two locking blocks 905 are positioned on the same straight line parallel to the rotating center line of the rotating plate 903, the two locking holes can hook the fixing plate 902 at the same time, and two clamping grooves are correspondingly arranged on the fixing plate 902. The unlocking driving block 909 is in sliding connection with the fixed plate 902, the moving direction of the unlocking driving block 909 moving relative to the fixed plate 902 is parallel to the rotation center line of the rotating plate 903, a guide groove for the unlocking driving block 909 to be embedded is formed in the bottom surface of the fixed plate 902, the guide groove is a long groove, the length direction of the guide groove is parallel to the rotation center line of the rotating plate 903, the guide groove is located between the two clamping grooves and is in a communicated state with the two clamping grooves, the unlocking driving block 909 is provided in two, the unlocking driving block 909 is used for pushing the locking block 905 to move towards the direction of being separated from the clamping grooves so as to achieve unlocking, and the two unlocking driving blocks 909 are respectively used for being matched with one. Two connecting rods 908 are arranged, the two connecting rods 908 are distributed in a V shape, one ends of the two connecting rods 908 are rotatably connected with a control rod 907, the other ends of the two connecting rods 908 are respectively rotatably connected with an unlocking driving block 909, the control rod 907 is rotatably connected with the main body 2, and the rotating center line of the control rod 907 is parallel to the rotating center line of the rotating plate 903. One end of the control rod 907 is rotatably connected with the two connecting rods 908, the other end of the control rod 907 is an unlocking control end for receiving external acting force, and the unlocking control end of the control rod 907 is positioned on the outer side of the main body 2 so as to facilitate unlocking operation. The lever 907 and the link 908 are located below the fixing plate 902, and the lever 907 can rotate up and down. In the process that the locking claw 301 is switched to the locking position from the unlocking position, the locking claw 301 drives the rotating plate 903 to rotate through the fixing sleeve 901, the rotating plate 903 drives the self-locking slider 904 to rotate, the self-locking slider 904 drives the locking block 905 to move towards the clamping groove, after the locking claw 301 is switched to the locking position, the locking block 905 is inserted into the clamping groove, the two locking blocks 905 hook the fixing plate 902, and then the fixing plate 902, the self-locking slider 904 and the rotating plate 903 are kept in a relatively fixed state, self-locking is achieved, and the locking claw 301 is kept at the locking position. When unlocking is needed, the control rod 907 is pressed, the control rod 907 drives the two unlocking driving blocks 909 to move in the guide grooves through the connecting rod 908, so that the two unlocking driving blocks 909 move into the clamping grooves and further push the locking blocks 905 outwards from the clamping grooves, so that the locking blocks 905 are separated from the clamping grooves, further the rotating plate 903 can rotate relative to the fixing plate 902, finally the two locking claws 301 rotate under the action of the locking claw control device, and the two locking claws 301 are switched to the unlocking positions from the locking positions.
As shown in fig. 16 and 17, the self-locking mechanism 9 further includes a return spring 906 connected to the two locking blocks 905, the return spring 906 is a tension spring, the return spring 906 is located between the fixing plate 902 and the self-locking slider 904, and the return spring 906 is configured to apply a pulling force to the two locking blocks 905, so that the locking blocks 905 are kept in an embedded state after the locking blocks 905 are embedded in the card slot, thereby preventing the locking blocks 905 from being disengaged from the card slot by themselves, and improving the reliability of locking.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (10)
1. English learning, including the host computer body and for the host computer body rotatable and can switch its characterized in that between closed condition and open mode: the annular damper is arranged on the main machine body and used for applying damping force to the cover plate in the process that the cover plate is switched to the closed state, and the cover plate is connected with the annular damper through a pivot shaft;
the annular damper comprises an outer shell, a rotary disk, a piston, an excitation coil and a power transmission mechanism, wherein the rotary disk is rotatably arranged on the outer shell, the piston is arranged in the outer shell and synchronously rotates with the rotary disk, the excitation coil is arranged on the piston, the power transmission mechanism is connected with the rotary disk and the pivot shaft and is used for transmitting a rotating force generated by the pivot shaft to the rotary disk, and magnetorheological fluid is filled in the outer shell;
the outer shell is fixedly connected with the main machine body, the outer shell is of a hollow annular structure, the inner cavity of the outer shell is an annular cavity, the rotating disc is arranged at the center of the outer shell, and the rotating disc and the outer shell are coaxially arranged;
the piston is integrally of an arc-shaped structure, the radian of the piston is less than 180 degrees, the piston and the outer shell are coaxially arranged, a gap is formed between the outer circular surface of the piston and the inner circular surface of the outer shell, and the gap forms a damping channel for the magnetorheological fluid to pass through; the two pistons are arranged, two partition plates are arranged inside the outer shell, the inner cavity of the outer shell is divided into two liquid storage cavities by the two partition plates, the two liquid storage cavities are not communicated, the volumes of the two liquid storage cavities are the same, and each liquid storage cavity is provided with one piston; the rotating disc is positioned in a central hole of the outer shell, the rotating disc is positioned between the two pistons, the two pistons are fixedly connected with the rotating disc, and the rotating disc and the outer shell are sealed through a sealing ring;
the power transmission mechanism comprises a first rotating shaft connected with the pivot shaft, a first gear arranged on the first rotating shaft, a second rotating shaft parallel to the first rotating shaft, a second gear arranged on the second rotating shaft and meshed with the first gear, a swing rod connected with the second rotating shaft and a sliding block which is rotatably connected with the swing rod and is in sliding connection with the rotating disc;
the rotating disc comprises a rotating disc body and a rotating rod fixedly connected with the rotating disc body, a first rotating shaft is rotatably arranged on the rotating disc, a first gear is fixedly arranged on the first rotating shaft, the first gear and the first rotating shaft are coaxially arranged, and a second gear is fixedly arranged on a second rotating shaft; one end of the swing rod is fixedly connected with the second rotating shaft, the other end of the swing rod is rotatably connected with the sliding block, the sliding block is sleeved on the rotating rod and can move along the length direction of the rotating rod relative to the rotating rod, and the swing rod, the sliding block and the rotating rod form a swing guide rod mechanism; the connecting rod is positioned between the rotating rod and the first gear, one end of the connecting rod is provided with a through hole for the first rotating shaft to pass through, the other end of the connecting rod is provided with a through hole for the second rotating shaft to pass through, the connecting rod cannot rotate, and the connecting rod is used for providing a supporting effect for the first rotating shaft and the second rotating shaft so as to enable the first rotating shaft and the second rotating shaft to synchronously rotate; when the pivot shaft rotates, the pivot shaft drives the first rotating shaft to synchronously rotate, the first rotating shaft drives the first gear to rotate, the first gear drives the second gear, the second rotating shaft and the swing rod to rotate, the swing rod drives the rotating rod to rotate through the sliding block, and the rotating disk and the piston are further rotated, so that the annular damper generates damping force.
2. The english learning machine of claim 1, characterized in that: the rotary disk body is of a circular ring-shaped structure and is coaxially arranged with the outer shell, the rotary disk body is located in a center hole of the outer shell, the rotary disk body is located between the two pistons, and the two pistons are fixedly connected with the rotary disk body.
3. The english learning machine of claim 2, characterized in that: the rotary rod is a long straight rod, the length of the rotary rod is smaller than the maximum diameter of the rotary disk body, the middle point in the length direction of the rotary rod is located on the axis of the rotary disk body, the length direction of the rotary rod is perpendicular to the axis of the rotary disk body, and the two ends of the rotary rod are fixedly connected with the rotary disk body.
4. English learning machine according to claim 3, characterized in that: the pin joint axle is fixedly connected with one end of first pivot and both are coaxial, and the other end of first pivot is that the intermediate position department on the length direction of rotating lever is connected with the rotating rod rotation, and the pin joint axle is coaxial setting with the rotary disk body, and the second pivot is located the below of rotating lever, and first gear and second gear are located the same one side of rotating lever.
5. English learning machine according to any one of claims 1 to 4, characterized in that: the main machine body is provided with an energy storage spring which is used for applying elastic acting force to the cover plate in the process that the cover plate is switched to the open state, the annular damper can provide damping force when the cover plate is closed, and the energy storage spring stores energy in the closing process of the cover plate.
6. English learning machine according to claim 5, characterized in that: the energy storage spring is a volute spiral spring, the energy storage spring is arranged inside the main machine body, one end of the energy storage spring is connected with the main machine body, and the other end of the energy storage spring is connected with the pivot shaft.
7. English learning machine according to any one of claims 1 to 4, characterized in that: still including set up in on the host computer body and be used for making apron and host computer body keep the safety lock of relatively fixed when the apron is in the closure state, be equipped with the spring bolt on the apron, the host computer body has the locking hole that lets the spring bolt male, and the safety lock is including being used for pressing from both sides the spring bolt that inserts in the locking hole and can switching the pawl between locking position and unblock position.
8. The english learning machine of claim 7, wherein: the locking claw is rotatable set up in on the host computer body, the safety lock still including be used for at the locking claw switch over to the in-process of unblock position to the locking claw provide drive power and be used for at the locking claw switch over to the in-process of locking position to the locking claw provide the locking claw controlling means of resistance, the locking claw controlling means include with the locking claw be connected pass power piece, with pass the uide bushing that power piece is connected, exert the double spring mechanism of elastic force and be used for adjusting the elasticity adjustment mechanism of the size of the elastic force that double spring mechanism applyed the uide bushing.
9. The english learning machine of claim 8, characterized in that: the double-spring mechanism comprises a first spring and a second spring arranged in the first spring, the elasticity adjusting mechanism comprises an adjusting shaft, a fixed baffle plate, a rotatable control plate, the elastic force adjusting mechanism is arranged on the fixed baffle plate and can be used for controlling the rotary separation blade to rotate between an extending state and a contracting state, the rotary separation blade is connected with the adjusting shaft and is used for controlling the rotary separation blade to rotate, the second spring is arranged between the fixed baffle plate and the guide sleeve, the first spring is arranged between the guide sleeve and the rotary separation blade in the extending state, and the rotary separation blade is provided with a plurality of and all rotary separation blades which are uniformly distributed on the fixed baffle plate along the circumferential direction.
10. The english learning machine of claim 9, wherein: the elastic force adjusting mechanism further comprises a driving gear rotatably arranged on the main machine body and a driven gear meshed with the driving gear, one part of the driving gear is located inside the main machine body, the other part of the driving gear is located outside the main machine body, the axis of the driving gear is parallel to the adjusting shaft, the driven gear is fixedly connected with one end of the adjusting shaft, the control plate is fixedly connected with the other end of the adjusting shaft, and the driven gear drives the control plate to synchronously rotate through the adjusting shaft; the rotary separation blades are of arc-shaped block structures, the axes of the rotary separation blades are parallel to the axis of the adjusting shaft, all the rotary separation blades are uniformly distributed on the control plate along the circumferential direction by taking the axis of the adjusting shaft as a central line, one end of each rotary separation blade is rotationally connected with the control plate through a rotating shaft, the other end of each rotary separation blade is used for being in contact with the first spring, the rotating central line of each rotary separation blade is parallel to the axis of the adjusting shaft, the distance between the end part of each rotary separation blade, which is rotationally connected with the control plate, and the adjusting shaft is greater than the distance between the other end of each rotary separation blade and the adjusting shaft, and the distance between the end part of each; when the rotating blocking piece is in a contraction state, the distance between the end part of the rotating blocking piece, which is used for being in contact with the first spring, and the adjusting shaft is at the minimum value; when the rotary blocking piece is in the extending state, the distance between the end part of the rotary blocking piece, which is used for being contacted with the first spring, and the adjusting shaft is at the maximum value.
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| CN201811001204.1A CN108922264B (en) | 2018-08-30 | 2018-08-30 | English learning machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811001204.1A CN108922264B (en) | 2018-08-30 | 2018-08-30 | English learning machine |
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| CN108922264B true CN108922264B (en) | 2020-10-02 |
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| CN114413149B (en) * | 2021-12-21 | 2024-07-23 | 新疆航天信息有限公司 | Identity authentication device |
| CN114839133B (en) * | 2022-04-06 | 2023-07-21 | 高分(北京)生物科技有限公司 | Cell imaging counting device |
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