CN110547598A

CN110547598A - Special supplementary teaching device in classroom

Info

Publication number: CN110547598A
Application number: CN201810556794.8A
Authority: CN
Inventors: 秦明月; 安俊颖; 石绍晴; 秦增宪
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2019-12-10

Abstract

the invention discloses a special auxiliary teaching device for classroom, which comprises a table top board supported by table legs, wherein the table top board is provided with a window, the bottom of the table top board is provided with a support, the support is provided with a lifting plate corresponding to the window through a driving mechanism, the table legs or the table top board are provided with a lifting button for controlling the driving mechanism to drive the lifting plate to lift towards the window, and the table top board is also provided with a teaching device, an experimental device and the like for assisting students to study. The special teaching device for the classroom has the advantages that the device has a common desk mode, an examination mode and an activity mode, students can learn in a classroom conveniently, students can be assisted to listen to the classroom with concentration, and the mutual influence between students is avoided, for example, the interference between adjacent desks, the shielding interference caused by the difference of heights between the front desk and the rear desk, the attention interference caused by shaking the body of the front student and the like.

Description

special supplementary teaching device in classroom

Technical Field

The invention relates to a classroom special auxiliary teaching device.

Background

The study desk is used by students in class. The currently used learning desk is composed of desk legs, a desk top plate and a desk hole, and has the advantages of simple structure, low cost and very popular application. However, the common learning desk has a single function, and has no auxiliary function except that the basic learning function can be completed. When the learning desk is used for school, the height of the students in front can block the sight of the students behind by more or less; the shaking of the front students can interfere with the study concentration of the rear students; due to the influence of distance, students behind a classroom are likely to not see the blackboard or hear the words of a teacher; due to the position angle, students on one side of the classroom may not see clearly due to the reflection of light on the blackboard. When in examination or writing, the front, the back, the left and the right are not shielded, and the actions of surrounding classmates may influence the students or even steal the students. In addition, the common desk has no auxiliary function for the experiment class.

Disclosure of Invention

The invention aims to solve the technical problem of providing a classroom special auxiliary teaching device which has a reasonable structure, a common desk mode, an examination mode and an activity mode, is not influenced by the heights, shaking, even distance and light reflection of surrounding students at any position in a classroom in an auxiliary function mode, can be clearly seen and heard during class, can prevent cheating during examination, can repeatedly learn the details of experimental steps and watch the experimental effect during the experimental class, has an automatic switch function and is simple to operate.

In order to solve the technical problem, the special auxiliary teaching device for the classroom comprises a table body, wherein the table body comprises table legs, a table top plate and a table hole, and the special auxiliary teaching device for the classroom is characterized in that: the front part of the table top plate is hinged with a switching top plate which can be buckled on the table top plate and can automatically keep an uplifted state when being uplifted through a damping hinging device; a square pallet is arranged on a fixing ring at the edge of the buckling surface of the switching top plate, two longitudinally extending plate beams are arranged in the middle of the buckling surface of the switching top plate at intervals, and the plate beams divide an inner cavity of the pallet into a middle main cavity, a left cavity positioned on the left side and a right cavity positioned on the right side; a display is arranged in the main cavity, a pocket is arranged in the left cavity, an auxiliary headset electrically connected with the display in a plug-in mode is arranged in the pocket, a stationery bag is arranged in the right cavity, and stationery is arranged in the stationery bag; the classroom teaching machine also comprises a controller electrically connected with the plurality of displays, a communication device capable of being in wireless communication with the controller, and a main headset electrically connected to the communication device in a plug-in manner, wherein a mute component for controlling the main headset is electrically connected to a headset wire of the main headset; the damping hinge device comprises a transverse hinge shaft which is fixedly arranged on the desktop plate and extends transversely, a switching top plate is fixedly connected with a plate sleeve which is rotatably matched with the transverse hinge shaft in a sleeved mode, two end parts of the transverse hinge shaft are coaxially and fixedly connected with plate gears, a swinging wheel with the diameter far larger than that of the plate gears is arranged in the table hole, intermediate wheels which are respectively in transmission meshing with the swinging wheel and the plate gears are also arranged in the table hole, and an intermediate hole matched with the intermediate wheels is formed in the edge part of the desktop plate; the edge part of the swinging wheel is fixedly connected with a swinging plate with a plate surface parallel to the up-and-down swinging track, and damping parts are arranged on the swinging plate and the wall of the desk hole; the wall of the desk hole is also provided with a trigger device which can be triggered by the swing plate to automatically communicate the display and the controller when the switching top plate is lifted, an isolation curtain wall which can be automatically extended along with the lifting of the switching top plate is arranged between two sides of the desk panel and the switching top plate, the isolation curtain wall comprises a desk box which is arranged upwards at the side openings of the left side and the right side of the desk panel, a lower fan is clamped in the desk box through a lower fastener, the left side and the right side of the switching top plate are provided with upper grooves, an upper fan is clamped in the upper grooves through an upper fastener, a middle fan is arranged between the upper fan and the lower fan, the middle fan is clamped on a transverse hinge shaft through the middle fastener, elastic cloth is arranged between the hinge sections of the upper fan and the middle fan and between the hinge sections of the middle fan, and folding pieces are arranged between the swing sections of the upper fan and the middle fan and between the swing sections of the middle fan, the folding piece chain and the adjacent edges of the elastic cloth are correspondingly connected together, and the folding piece chain comprises a plurality of plastic pieces which are folded end to end; the mute assembly comprises a housing fixedly sleeved on the headset wire, a control panel electrically connected with the headset wire is arranged in an inner cavity of the housing, a button matched with the control panel in a pressing and triggering manner is arranged on the housing, the housing is a closed shell with a cavity, a shell inlet hole and a shell outlet hole matched with the headset wire in a sleeved manner are respectively arranged at two ends of the shell, an elastic ring is respectively clamped in the shell inlet hole and the shell outlet hole, the elastic rings are fixedly sleeved on the corresponding headset wire, an operation hole matched with the button in a sleeved manner is arranged at the upper part of the shell, the button comprises a button matched with the operation hole in a plugged manner, an elastic membrane is arranged at one end of the button extending into the shell in a looped manner, the peripheral part of the elastic membrane is sealed and adhered to the inner wall of the shell at the periphery of the operation hole, and a; the inner cavity wall of the shell wire outlet end is fixedly provided with a front plug pair consisting of two elastic plugs which are correspondingly arranged at intervals up and down, the front plug pair is respectively matched with the upper side surface and the lower side surface of the wire inlet end of the control plate in an elastic supporting manner, the inner cavity wall of the shell wire outlet end is fixedly provided with a rear plug pair consisting of two elastic plugs which are correspondingly arranged at intervals up and down, and the rear plug pair is respectively matched with the upper side surface and the lower side surface of the wire outlet end of the control plate in an elastic supporting manner; the lower part of the shell is provided with a sound hole which is arranged corresponding to the MIC on the control panel, the outer wall of the shell corresponding to the sound hole is provided with a sound hole groove which is larger than the sound hole, and waterproof cloth is fixedly arranged in the sound hole groove; the rubber sleeve is sleeved outside the housing and comprises a circular tubular sleeve which is sleeved and matched with the middle part of the housing; the operating table is characterized in that the outer side wall of the casing outside the operating hole is provided with an operating table which is convenient for the protrusion of the keys and relatively low and extends along the length of the casing, the two ends of the operating table are fixedly provided with arc-shaped tables in limit fit with the two ends of the sleeve, the bottom of the sleeve is provided with meshes in corresponding arrangement with the sound holes, and the top of the sleeve is provided with a key hole in fit with the keys.

As an implementation mode, the damping part comprises a plurality of damping iron rods which are fixedly arranged on the side wall of the swinging plate, scatter outwards by taking the circle center of the swinging wheel as the center and are arranged at intervals, and the side wall of each damping iron rod is in a wedge shape with a narrow end close to the circle center and a wide end; the adjusting sleeve is installed on the wall of the table hole, an adjusting rod which is arranged towards the circle center of the oscillating wheel in an extending mode is inserted in the adjusting sleeve in a sliding mode, the adjusting rod comprises a conical magnetic rod which is tightly attached to a damping iron rod in a sliding fit mode, the position of the conical magnetic rod corresponds to that of the conical magnetic rod, a square rod in the sliding fit mode of the adjusting sleeve is fixedly arranged at the thick end of the conical magnetic rod, a threaded rod is fixedly connected to the inner end of the square rod, a first bearing is coaxially installed at the operating end of the adjusting sleeve through a clamping plate, a rotating cavity corresponding to the first bearing is formed in the operating end of the adjusting sleeve, a threaded sleeve in threaded connection with the threaded rod is fixedly arranged in the first bearing, an inner clamping ring in clamping fit with the inner end of an inner ring of the first bearing is fixedly connected to the inner end of the threaded sleeve, an operating wheel is sleeved on the outer section of the threaded sleeve and fixedly connected with the operating.

As an implementation mode, the triggering device comprises a hole rotary drum which is rotatably arranged on the wall of the desk hole through a hole hinge shaft, a hole swing arm which extends to the upper part of a swing plate is fixedly connected on the hole rotary drum, a hole roller which can be matched with the swing plate in a rolling way is arranged at the tail end of the hole swing arm, a hole limiting block is arranged on the hole wall between the swing plate and the hole hinge shaft, a torsion spring which can press the hole swing arm downwards to the hole limiting block is clamped on the hole hinge shaft, a wiring module which is arranged close to the hole rotary drum is also arranged on the hole wall, a plurality of electric triggering blocks are arranged on the wiring module and the hole rotary drum, each electric triggering block comprises two sets of thin rod sliding cavities and thick spring cavities which are communicated and arranged in the wiring module, metal rods are inserted in the rod sliding cavities and the spring cavities, metal balls are fixedly connected at the inner ends of the metal rods, hole springs which elastically press the metal balls, the outer end of the metal rod is provided with an electric wire connector, the electric trigger block also comprises an arc-shaped groove which is arranged on the outer wall of the hole rotary drum and is bent along the drum wall, and an arc-shaped copper sheet which can be electrically connected with the upper metal ball firstly along with the swing of the hole swing arm and then electrically connected with the two metal balls is arranged in the arc-shaped groove; when the switching top plate is buckled, the swinging plate swings to the lowest end and is positioned below the hole roller, at the moment, the hole swinging arm swings downwards and presses the hole limiting block, and the arc copper sheet swings upwards and is only electrically connected with the metal ball above the hole swinging arm; when the switching top plate is lifted to be vertical to the desktop plate, the swinging plate swings upwards and pushes the hole swinging arm to swing upwards through the hole roller, and at the moment, the arc copper sheet swings downwards along with the hole rotating drum and is simultaneously electrically connected with the two metal balls, so that the display is communicated with the controller; when the angle between the switching top plate and the desktop plate reaches 120 degrees after the switching top plate is lifted, the upper end of the swinging plate touches the bottom surface of the desktop plate to be limited.

As an implementation mode, the upper mounting tool comprises an upper bottom groove arranged at the bottom of the upper groove and clamped and matched with the bottom of the upper fan, an upper top groove extending upwards along the switching top plate is arranged at the top of the upper groove, an upper sliding block capable of sliding up and down along the upper top groove is mounted in the upper top groove through an upper spring, the lower end surface of the upper sliding block is a concave arc surface, and the lower end of the upper sliding block is in a downward-protruding wedge shape away from one side of the bottom of the upper groove; the upper fan comprises an upper bottom rod, the lower end of the upper bottom rod can be in plug fit with the upper bottom groove, the upper end of the upper bottom rod is hinged with an upper supplementing rod, the upper supplementing rod comprises a hinged section and a clamping section, the hinged section is hinged with the upper bottom rod, the clamping section is in clamping fit with the upper top groove, the hinged section is a U-shaped groove section which can be in semi-surrounding sleeve fit with the upper bottom rod, an iron sheet is fixedly connected to the inner bottom surface of the U-shaped groove section, an upper magnetic sheet in adsorption fit with the iron sheet is fixedly connected to the lower portion of the upper bottom rod, an upper handle block far away from the switching top plate is fixedly arranged on the outer side wall of the swinging section of the U-shaped groove section, an outer handle block close to the switching top plate is fixedly arranged on the outer side wall of the swinging section of; the upper end face of the clamping section is a convex arc face corresponding to the lower end face of the upper sliding block, and the upper section of the clamping section is a wedge shape which protrudes upwards and is close to one side of the groove bottom.

as an implementation mode, the lower mounting tool comprises a lower far groove which is arranged at one end of the table box far away from the transverse hinge shaft and is matched with the lower fan in a clamping manner, a lower near groove extending along the table box is arranged at one end of the table box close to the transverse hinge shaft, a lower sliding block capable of sliding back and forth along the lower near groove is mounted in the lower near groove through a lower spring, the outer end face of the lower sliding block is a concave arc surface, and the outer section of the lower sliding block is in a wedge shape protruding axially at one side far away from the bottom of the groove; the lower fan comprises a lower bottom rod, one end of the lower bottom rod can be in inserted fit with the lower far groove, the other end of the lower bottom rod is hinged with a lower supplementing rod, the lower supplementing rod comprises a hinged section in hinged fit with the lower bottom rod and a clamping section in clamping fit with the lower near groove, the hinged section is a C-shaped groove section which can be in semi-surrounding sleeve fit with the lower bottom rod correspondingly, an iron sheet is fixedly connected to the inner bottom surface of the C-shaped groove section, a lower magnetic sheet in adsorption fit with the iron sheet is fixedly connected to the lower portion of the lower bottom rod, and a lower handle block which is far away from a switching top plate is fixedly arranged on the outer side wall of the swinging section of; the front end face of the clamping section is a convex arc face corresponding to the outer end face of the lower slider, and the front section of the clamping section is a wedge shape protruding forwards close to one side of the bottom of the groove.

As one implementation mode, the middle fan comprises a middle supporting plate extending outwards from the transverse hinge shaft, and a fan box capable of containing a folding chain between the middle fan and the upper fan is mounted on the swinging section of the middle supporting plate; the middle mounting tool comprises a C-shaped ring which is fixedly connected with the hinged end of the middle supporting plate and is clamped and rotationally matched with the transverse hinge shaft, and also comprises a step platform which is arranged at the opening part of the desk box and can enable the top surface of the middle supporting plate to be flush with the top surface of the desk panel after being sleeved, supported and matched with the middle supporting plate and the fan box, wherein the middle supporting plate is provided with a middle fan groove which enables the top surface of the middle supporting plate to be flush with the top surface of the upper fan after being clamped and matched with the upper fan; the fan also comprises a pushing device which can push the upper fan out of the middle fan.

As an implementation mode, the ejecting device includes a pushing groove disposed at the swing port of the middle support plate and communicated with the middle fan groove, an ejecting rod is slidably inserted in the pushing groove, the end face of the swing end of the upper fan is a convex arc surface with excessive smoothness, the swing section of the upper fan is a wedge shape which is fastened to the rear of the middle fan groove and is longer in the upper side wall and shorter in the lower side wall, the inner end of the ejecting rod is set to be a wedge shape with a concave arc surface matched with the swing end of the upper fan, push rods are fixedly disposed on the two sides of the top surface of the ejecting rod, a pushing rod groove is formed between the push rods, an inner pull spring for connecting the inner section of the ejecting rod and the opening of the ejecting groove is disposed in the pushing rod groove, and an ejecting hole corresponding to the outer end of the.

As an improvement, the button also comprises an elastic support plate fixedly connected with the inner end of the button, the left side and the right side of the tail section of the elastic support plate are respectively provided with a clamping groove, and the inner wall of the shell is fixedly provided with a clamping column clamped and matched with the clamping grooves.

as an improvement, an elastic lantern ring matched with the MIC in a sleeved mode is further fixedly arranged on the inner wall of the shell.

as a further improvement, the elastic ring comprises a ring body fixedly connected with the headset wire, and a ring groove which can be elastically clamped and matched with the shell inlet hole or the shell outlet hole is annularly arranged on the outer peripheral wall of the ring body.

As an improvement, the shell comprises an upper cover and a lower seat which are buckled together up and down, and the upper cover and the lower seat are fixedly connected together in a sealing mode through glue or are directly and thermally fused together.

As an improvement, a supporting rib matched with the operating platform in a supporting mode is fixedly connected to the inner wall of the sleeve.

in conclusion, the classroom special auxiliary teaching device adopting the structure has the common desk mode, the examination mode and the activity mode, no matter which position in a classroom is not influenced by the height, shaking, distance and light reflection of surrounding students under the auxiliary function mode, the classroom special auxiliary teaching device can clearly see and clearly listen to the classroom, can prevent cheating during examination, can repeatedly learn the details of the experimental steps and watch the experimental effect during the experimental classroom, has an automatic switch function and is simple to operate.

Drawings

The invention is described in further detail with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic view of a matching structure of the table body and the damping hinge device;

FIG. 3 is a schematic diagram showing a structural comparison of a damping iron rod and an adjusting sleeve;

FIG. 4 is a schematic view of the structure of the swing plate and the trigger device;

FIG. 5 is a schematic view of the fitting structure of the operating wheel, the threaded sleeve and the adjusting rod;

FIG. 6 is a schematic view of the fitting structure of the upper mounting device and the upper fan;

FIG. 7 is a schematic view of the fitting structure of the lower mounting device and the lower fan;

FIG. 8 is a schematic view of the upper fan, the middle fan and the step;

FIG. 9 is a schematic view showing a process of pushing out the upper fan by the pushing-out device;

FIG. 10 is a schematic view of the structure of the ejector pin and the ejector hole;

FIG. 11 is a schematic diagram illustrating a switching top plate lifting process;

FIG. 12 is a comparative illustration of the upper fan clamping process;

FIG. 13 is a schematic view comparing an open state and a closed state of the upper fan;

FIG. 14 is a comparison of the flap chain extension of 50, 90 and 120 degrees;

Fig. 15 is a schematic view showing an assembled structure of the mute assembly;

FIG. 16 is a schematic view of the cooperating structure of the operation hole and the elastic plug on the upper cover;

FIG. 17 is a schematic view of the structure of the key and the elastic membrane;

FIG. 18 is a schematic structural view of the sound hole, the sound hole groove and the tarpaulin;

FIG. 19 is a schematic view of the fitting structure of the cover and the earphone line;

FIG. 20 is a schematic structural view of a rubber sleeve;

FIG. 21 is a schematic view of a fitting structure of a rubber sleeve and a mesh;

Fig. 22 is a schematic view of the fitting structure of the rubber cover, the housing and the earphone line.

Detailed Description

As shown in the figure, the classroom special auxiliary teaching device is provided with a display, an auxiliary headset and other multimedia equipment on a desktop plate through a hinged folding mechanism, and realizes high-definition audiovisual learning for a teaching teacher and a blackboard through a controller and a camera. In detail, the desk mainly comprises a desk body 1, and the desk body is a main body structure for mounting other components. The desk body comprises desk legs 2, a desktop plate 3 and a desk hole 95, and the use mode is similar to that of a common desk, and the description is omitted. In this patent, the front portion of the table top is hingedly mounted with a switching top plate 4 via a damping hinge, which can swing about the damping hinge, and thus can be fastened to the table top. The size of the switching top plate is consistent with that of the table top plate, so that the original table top plate with the buckled heels is free from difference, and the switching top plate is easily accepted by students in appearance and psychology. Because the damping hinge device has a damping function, the switching top plate can automatically keep the state of the lifting angle when being lifted, can be set according to personal preference and habits, and is very humanized. In this patent, the edge of the fastening surface of the switching top plate is provided with a pallet 5, and the pallet is in a shape of a square corresponding to the edge, so that the fastening surface and the pallet enclose an inner cavity for containing articles. Two longitudinally extending plate beams 6 are arranged in the middle of the buckling surface of the switching top plate at intervals, the pallet and the plate beams mainly play a role in spacing and supporting, and articles in the inner cavity are guaranteed not to be crushed after the switching top plate is buckled. The board roof beam is split apart the pallet inner chamber into middle main cavity 7, is located left chamber 8 and is located right side's right chamber 9, installs display 10 in the main cavity, lifts and switches behind the roof, just can watch clear teaching image through the display, and is very convenient. A pocket 11 is arranged in the left cavity, an auxiliary earphone 12 which is electrically connected with the display in a plug-in mode is arranged in the pocket, and the auxiliary earphone can receive sound signals of a teacher and can ask questions of the teacher. The right cavity is internally provided with a stationery bag 13, and stationery 14 is contained in the stationery bag, which is equivalent to the effect of a stationery box and is very humanized. The patent also comprises a controller 15, the output end of the controller is electrically connected with a plurality of displays, and the input end of the controller is electrically connected with a camera 16. The controller is the main part of this patent, and its main effect is the video information who transmits the camera to each display demonstration to realize the multimedia teaching function. The camera is arranged at the top of a classroom, is higher in position, automatically records videos, and is convenient without influencing the activities of students in the classroom. The device also comprises a communicator 17 which can be in wireless communication with the controller, and a main headset 18 is electrically connected to the communicator in a plug-in connection mode. The communicator is carried by the teacher, and the main headset is a main communication tool for the teacher to give lessons to students and listen to problems of the students, so that the communicator is very convenient. The damping hinge device comprises a transverse hinge shaft 19 fixedly arranged on the table top plate, and the transverse hinge shaft extends left and right. The lower end of the switching top plate is fixedly connected with a transversely extending plate sleeve 20 which is in rotating fit with the transverse hinge shaft sleeve, so that the switching top plate can swing up and down around the transverse hinge shaft. Two ends of the transverse hinge shaft are respectively and coaxially fixedly connected with a plate gear 21, a middle wheel 23 and a swinging wheel 22 are installed in the table hole, a middle hole matched with the middle wheel is formed in the edge of the table top plate, and the swinging wheel is in meshing transmission with the plate gear through the middle wheel. In this patent, the edge of the swinging wheel is fixedly connected with a swinging plate 24 with a plate surface level with the up-down swinging track, and a damping piece 98 is arranged between the swinging plate and the wall of the desk hole. The damping piece mainly has the functions of increasing the resistance of the swinging plate during swinging and enabling the swinging plate to be locked on the wall of the desk hole relatively after swinging. In the patent, the diameters of the plate gear, the intermediate wheel and the swinging wheel are sequentially increased, one of the functions of the arrangement is that the rotating directions of the plate gear and the swinging wheel are consistent, the plate gear rotates by a larger angle and only swings by a smaller angle corresponding to the swinging wheel, and the control is more convenient; the second function is that a larger force can be output at the plate gear by applying a smaller force (namely, damping force) to the swing plate, so that the reset pressure of the lifted switching top plate can not overcome the damping force, the damping hinge function is realized, namely, the lifting angle is kept after the lifting, and the control is more labor-saving. The wall of the desk hole is also provided with a trigger device 97, the trigger device can be triggered by the swinging of the swinging plate when the switching top plate is lifted, and the trigger device is automatically communicated with circuits of the display and the controller after being triggered, so that the purpose of automatically starting up the switching top plate at the same time is achieved, and two purposes are achieved at one stroke. Similarly, when the power-off is needed, the control button does not need to be pressed as the traditional display, the top plate is only needed to be buckled and switched, the trigger of the trigger device is automatically released after the swinging plate is reset, the communication circuit of the display and the controller is automatically cut off immediately, and the operation is very simple. In this patent, install between desktop board left and right sides both sides and the switching roof and keep apart the curtain, keep apart the curtain and can lift along with the switching roof and automatic the stretching out to the lock along with the switching roof gets up with automatic the contracting. The isolation curtain wall is arranged, so that the influence of left and right classmates can be avoided during learning, and the concentration is improved; secondly, when in examination, the mutual interference between the students at the adjacent tables is avoided, the students at the adjacent tables can be prevented from peeping and cheating, and the real level exertion and fairness in the examination are ensured. In this patent, the isolation curtain wall comprises two table boxes 55 arranged on the table top board, the two table boxes are positioned at the left side and the right side of the table top board, the mouth parts of the two table boxes are arranged upwards, and a lower fan 57 is clamped in the table boxes through a lower mounting tool 56. The left side and the right side of the switching top plate are provided with upper grooves 58 which are arranged corresponding to the table box up and down, and an upper fan 60 is clamped in the upper grooves through upper mounting tools 59. A middle fan 61 is arranged between the upper fan and the lower fan, and the middle fan is clamped on the transverse hinge shaft through a middle mounting tool 62. For convenience of description, a section of the upper, middle and lower fans close to the transverse hinge shaft is referred to as a hinge end, and a section far from the transverse hinge shaft is referred to as a swing section. Elastic cloth capable of freely stretching is arranged between the hinging section of the upper fan and the hinging section of the middle fan, and elastic cloth 63 is also arranged between the hinging section of the middle fan and the hinging section of the lower fan. A folding chain 64 is arranged between the swing section of the upper fan and the swing section of the middle fan, a folding chain is also arranged between the swing section of the middle fan and the swing section of the lower fan, and the folding chains are correspondingly connected with the adjacent edges of the elastic cloth. In summary, when the switching top plate is fastened to the table top plate, the elastic cloth is in a contracted state, and the folding sheet chains are folded and contracted together under the action of the elastic tensile force of the elastic cloth, and for convenience of description, the state is referred to as a contracted state or a fastened state. When the switching top plate is lifted, the switching top plate pulls the folding piece chain and the elastic cloth upwards, so that the folding piece chain and the elastic cloth are automatically and synchronously unfolded along with the lifting of the switching top plate. In this patent, the flap chain is made up of several plastic sheets 65 folded end to end, and in the natural state, the flap chain is folded and contracted together due to the elasticity of the plastic itself. Compared with the elastic cloth, the folding piece chain has certain rigidity, so that after the folding piece chain is completely unfolded into a fan shape, the folding piece chain (particularly the fan-shaped outer arc edge part) is in a natural vertical state and cannot bend or sag due to gravity, and the stretching effect is ensured. For convenience of description, the unfolded state is referred to as an extended state or an lifted state. When learning finishes and needs the lock to switch over the roof, elasticity cloth can make the automatic shrink of tab chain fold up through self elastic tension, fundamentally has avoided tab chain can not fold the problem of shrink together when switching to the contraction state by extension state, has guaranteed the operational reliability of this patent.

In this patent, the damping member mainly comprises five parts, namely a damping iron rod 25, an adjusting sleeve 26, an adjusting rod 27, a threaded sleeve 33 and an operating wheel 35, and the damping member realizes damping of the swing plate, namely the switching top plate, by utilizing the magnetic adsorption principle of the damping iron rod and the adjusting rod. In detail, the number of the damping iron rods is several, and the damping iron rods are fixedly installed on the side wall of the swing plate close to the wall of the table hole. The damping iron rods are arranged at intervals in a mode of taking the circle center of the swinging wheel as the center to scatter outwards, the side walls of the damping iron rods close to the adjusting rod are designed into wedges corresponding to the radial shape, namely the side walls are close to the narrow end of the circle center and the other end is wide, the magnetic attraction area of the damping iron rods and the adjusting rod can be fully utilized, and the damping effect and the maintaining effect (strength) on the inclined state of the switching top plate are increased. The adjusting sleeve is fixedly installed on the wall of the table hole corresponding to the swinging plate, the adjusting rod is inserted in the adjusting sleeve in a sliding mode, and the adjusting rod extends towards the circle center of the swinging wheel. In this patent, the adjustment rod comprises a conical magnetic rod 28, a square rod 29 and a threaded rod 30 connected in sequence. The conical magnetic rod is closely matched with the damping iron rod, and the thin end of the conical magnetic rod corresponds to the narrow end of the damping iron rod. The conical magnetic rod is conical, and the design has the second function, namely, the conical magnetic rod is matched with the wedge shape of the damping iron rod to enhance the magnetic adsorption effect; and the other one is that the damping iron rod and the conical magnetic rod which are closely matched can be in sliding fit when the swinging plate swings. The square rod is a main component in sliding fit with the adjusting sleeve, and the square rod can ensure that the square rod and the adjusting sleeve can only axially slide but cannot be in rotating fit. The operating end of the adjusting sleeve, i.e. the end far away from the swinging plate, is provided with a rotating cavity 32, and the end is also coaxially provided with a first bearing 31 through a clamping plate 96, and the inner end of the first bearing is arranged corresponding to the rotating cavity. The threaded sleeve is fixedly clamped in the first bearing, and the inner end of the threaded sleeve is fixedly connected with an inner clamping ring 34 which is positioned in the rotating cavity and is in clamping fit with the inner end of the inner ring of the first bearing. The outer section of the threaded sleeve is sleeved with an operating wheel which is fixedly connected with the operating wheel through an operating nail 36. An outer snap ring 37 matched with the outer end of the inner ring of the first bearing in a clamping mode is fixedly arranged on the inner side wall of the operating wheel, so that the threaded sleeve is fixedly clamped on the inner ring of the first bearing through the inner snap ring and the outer snap ring, and can freely rotate around the axis of the adjusting sleeve under the driving of the operating wheel. In this patent, the thread bush is screwed on the thread rod, so when the operating wheel is rotated, the thread bush can drive the thread rod to move axially, namely drive the conical magnetic rod to move axially. Therefore, the effect of adjusting the contact area of the conical magnetic rod and the damping iron rod, namely the effect of adjusting the magnetic attraction force, namely the effect of adjusting the damping force can be achieved. When the device is actually used, a user can adjust the damping according to the strength, the hand feeling and the habit of lifting and switching the top plate, and the device is very humanized. The outer end of the threaded rod is screwed with a limit nut 38 which mainly plays a role in preventing the adjusting rod from slipping off the threaded sleeve.

in the patent, the triggering device mainly comprises five parts, namely a hole rotary drum 40, a hole swing arm 41, a torsion spring 44, a hole limiting block 43 and a wiring module 45. Wherein, the hole rotary drum is in a circular tube shape and is rotatably arranged on the wall of the table hole at the outer arc side of the swing track through a hole hinge shaft 39. The hole swing arm is fixedly arranged on the hole rotary drum and extends above the swing plate. The tail end of the hole swing arm is provided with a hole roller 42 which can be matched with the surface of the swing plate in a rolling way when the swing plate swings, so that the friction and the noise can be reduced, and the smoothness of matching can be enhanced. A hole limiting block is arranged on the hole wall between the swinging plate and the hole hinge shaft, and a torsional spring which presses the hole swinging arm downwards onto the hole limiting block is clamped on the hole hinge shaft. When the hole swing arm is in a buckling state, the hole swing arm swings to the hole limiting block, the swing plate swings downwards to the lowest position, and the hole roller is located above the swing plate at the moment. The wiring module is mounted on the wall of the desk hole close to the hole rotating drum, and the wiring module and the adjacent hole rotating drum are provided with a plurality of electric trigger blocks 46 which are main components for automatically and electrically connecting the controller and the display. In this patent, the electrical trigger block includes two sets of chambers, a metal rod 49 mounted in the chambers, and an arcuate copper plate 54 disposed on the hole drum. Wherein, the inner end of the chamber is arranged towards the outer wall of the hole rotary drum, and the two sets of chambers are arranged at intervals up and down. Each set of chambers includes a rod slide chamber 47 and a spring chamber 48 connected together, the rod slide chamber being thinner and the spring chamber being thicker and disposed toward the hole drum. The metal rod is inserted in the rod sliding cavity and the spring cavity in a sliding mode, and a metal ball 50 is fixedly connected to the inner end of the metal rod, namely one end close to the hole rotating cylinder. The metal rod in the spring cavity is sleeved with a hole spring 51, and the hole spring elastically presses the metal ball on the wall of the hole rotating drum. The outer ends of the metal rods are fitted with wire connectors 52. The electric trigger block further comprises an arc-shaped groove 53 arranged on the outer wall of the hole rotating drum, and the arc-shaped groove is arranged along the arc curve of the wall of the hole rotating drum. The arc copper sheet is fixedly arranged in the arc groove, and when the hole rotating drum swings, the arc copper sheet is firstly in sliding fit with the upper metal ball and then in sliding fit with the lower metal ball. When the switching top plate is lifted to 90 degrees, the arc copper sheet is electrically connected with the two metal balls at the same time, and the electric trigger block is triggered. When the plurality of sets of electric trigger blocks are triggered simultaneously, the power supply and the communication between the controller and the display are switched on, the display is automatically started and displays the real-time video of the camera, and the main headset and the auxiliary headset form a communication relation. When the switching top plate is continuously lifted and the included angle between the switching top plate and the desktop plate reaches 120 degrees, the upper end of the swinging plate touches the bottom surface of the desktop plate to be limited, and at the moment, the display is still in a starting state and can not be continuously lifted upwards, so that the self-protection function is realized. When learning finishes and will switch the top board lock joint, the swing board swings to the least significant end and is located hole gyro wheel below, and the hole swing arm is swung downwards and is pressed on the hole stopper and the arc copper sheet upwards swings to the position that only is connected with the metal ball electricity of top this moment. At the moment, the electric trigger block restores the open circuit state, the circuit of the controller and the display is cut off, and the display is automatically turned off.

In this patent, the upper mount is mainly composed of an upper bottom groove 66, an upper top groove 67, an upper spring 68, and an upper slider 69. Wherein, the upper bottom groove is arranged at the bottom of the upper groove, namely the end of the upper groove close to the transverse hinge shaft, and the upper bottom groove is clamped and matched with the bottom of the upper fan. Because the upper channel is disposed to extend from the swing end of the switching deck to the hinge end, and the swing end is generally below the upper hinge end, for ease of description, the two ends of the upper channel will be referred to as the upper and lower ends, or the swing and hinge ends. The upper top groove is arranged at the upper end of the upper groove, namely the end of the upper groove far away from the transverse hinge shaft, has a certain depth and extends upwards along the upper groove. In this patent, the top shoe passes through the spring mounting and goes up the overhead tank, therefore the top shoe can slide or stretch out and draw back from top to bottom along the overhead tank. In this patent, the upper fan is mainly composed of an upper bottom rod 70, an upper supplement rod 71, an iron sheet, an upper magnetic sheet 73 and an upper handle block 74. Wherein, go up the sill bar lower extreme and can cooperate with last kerve cartridge, go up sill bar length and will be less than last groove length to clamp smoothly. The upper supplement rod is hinged and matched with the upper end of the upper bottom rod according to a T-shaped structure, the upper supplement rod comprises a hinge section and a clamping section which are fixedly connected together, the clamping section is shorter, and the hinge section is longer. The hinged section is a U-shaped groove section 72 with a U-shaped cross section, so that the hinged section and the upper bottom rod can be correspondingly and semi-surrounded and sleeved together. In the patent, an iron sheet is fixedly connected to the inner bottom surface of the U-shaped groove section, and an upper magnetic sheet corresponding to the iron sheet is fixedly connected to the lower part of the upper bottom rod. After the semi-surrounding sleeving, the upper supplementing rod and the upper bottom rod are coaxially and fixedly connected into an integral structure. When the upper fan is clamped on the upper mounting tool, the upper fan is rotated into a T-shaped structure (an open state), then the lower end of the upper bottom rod is inserted into the upper bottom groove, the clamping section of the upper supplementing rod is aligned to the upper top groove, then the hinge section of the upper supplementing rod is slowly pushed close to the upper bottom rod, and at the moment, the clamping section of the upper supplementing rod gradually pushes the upper sliding block into the upper top groove; when the upper magnetic sheet and the iron sheet are adsorbed together, the upper compensation rod and the upper bottom rod are in half-surrounding sleeving (locking state), the upper sliding block elastically presses the upper fan in the upper groove, and the clamping is completed. In this patent, set firmly on the swing section lateral wall of U-shaped groove section and go up the handle piece, when needing to dismantle the fan utensil, only need outwards stimulate go up the handle piece can, the operation is very simple. In this patent, go up the handle piece and be located U-shaped groove section lateral wall and keep away from the limit portion of switching the roof, grab from last groove outside more easily like this, very humanized.

in this patent, the lower mount is mainly composed of a lower distal slot 75, a lower proximal slot 76, a lower spring 77, and a lower slider 78. The lower far slot is arranged at the rear part of the desk box (for convenience, the desktop plate is defined to be close to the transverse hinge shaft as a front or hinged end and is far away from the transverse hinge shaft as a back), namely one end of the desk box far away from the transverse hinge shaft, and the lower far slot is clamped and matched with the bottom of the lower fan. The lower near groove is arranged at the front end of the table box, namely the end of the table box close to the transverse hinge shaft, has a certain depth and extends forwards along the table box. In this patent, the lower slider is installed in the lower near groove through the lower spring, so the lower slider can slide or stretch back and forth along the lower near groove. In this patent, the lower fan mainly comprises a lower bottom rod 79, a lower supplement rod 80, an iron sheet, a lower magnetic sheet 82 and a lower handle block 83. Wherein, the lower end of the lower bottom rod can be inserted and matched with the lower far groove, and the length of the lower bottom rod is less than that of the table box, so as to be conveniently and smoothly clamped. The lower supplement rod is hinged and matched with the front end of the lower bottom rod according to a T-shaped structure, the lower supplement rod comprises a hinge section and a clamping section which are fixedly connected together, the clamping section is shorter, and the hinge section is longer. The hinged section is a C-shaped groove section 81 with a C-shaped cross section, so that the hinged section can be sleeved together with the lower bottom rod in a corresponding semi-surrounding mode. In the patent, an iron sheet is fixedly connected to the bottom surface of the inner bottom of the C-shaped groove section, and a lower magnetic sheet corresponding to the iron sheet is fixedly connected to the lower part of the lower bottom rod. After the semi-surrounding sleeving, the lower supplementing rod and the lower bottom rod are coaxially and fixedly connected into an integral structure. When the lower fan is clamped on the lower mounting tool, the lower fan is rotated into a T-shaped structure (in an opening state), then the rear end of the lower bottom rod is inserted into the lower far groove, the clamping section of the lower supplementing rod is aligned to the lower near groove opening part, then the hinge section of the lower supplementing rod is slowly pushed close to the lower bottom rod, and at the moment, the clamping section of the lower supplementing rod gradually pushes the lower sliding block into the lower near groove; when the lower magnetic sheet and the iron sheet are adsorbed together, the lower supplement rod and the lower bottom rod are in half-surrounding sleeving (locking state), and the lower sliding block elastically presses the lower fan in the table box to complete clamping. In this patent, the swing section lateral wall of C shape groove section sets firmly down the handle piece down, when needing to dismantle the fan utensil, only need outwards stimulate the handle piece down can, the operation is very simple. In this patent, the lower handle piece is located the limit portion that the C-shaped groove section lateral wall kept away from the table casket bottom surface, grabs from the table casket outside more easily like this, and is very humanized.

In this patent, the middle fan is mainly composed of a middle supporting plate 84 and a fan box 85, wherein the middle supporting plate is a long strip-shaped flat plate and extends outwards from a transverse hinge shaft. The fan box is arranged on the swing section of the middle supporting plate, the opening part of the fan box is arranged upwards, and the fan box is mainly used for containing the contracted flap chain between the middle fan and the upper fan in a buckling state. In this patent, the middle mounting device is composed of a C-shaped ring 86 and a step 87, wherein the C-shaped ring is fixedly connected with the hinged end of the middle supporting plate, the mouth part of the C-shaped ring can be movably clamped and combined with the transverse hinge shaft, and the C-shaped ring can swing around the transverse hinge shaft after being clamped and combined. The step platform is arranged at the opening part of the desk box and is a step-shaped boss. Because the swinging section of the middle supporting plate is provided with the fan box, the longitudinal section of the swinging section of the middle supporting plate is step-shaped. In this patent, the shape of the step exactly matches with the step-like structure of the middle supporting plate and the edge of the fan box. When the C-shaped ring is required to be clamped, the C-shaped ring is only required to be clamped on the transverse hinge shaft, and the middle fan is always kept in a clamped and rotationally matched state with the transverse hinge shaft under the tensioning tension action of the installed elastic cloth and the flap chain. When the desk is in a buckling state, the middle fan is completely buckled on the step of the desk box, and the top surface of the middle fan is flush with the top surface of the desk panel. In the patent, the middle support plate is provided with a middle fan groove 88, the middle fan groove is communicated with the fan box, the middle fan groove can be completely clamped and matched with the upper fan, and the top surface of the middle fan is flush with the top surface of the upper fan after clamping. In this patent, the swing section lateral wall of U-shaped groove section sets firmly on being close to the outer handle piece 99 that switches the roof setting, and outer handle piece is longer than last handle piece slightly, and the purpose of design like this makes last fan lock to well fan groove back, and well fan groove will be filled up completely, does not have hole or groove, and desktop board top surface, well fan top surface and last fan top surface constitute a complete plane. Therefore, when in ordinary study, experimental class, communication activity or any occasion that does not need to separate the curtain wall but needs the display, the student can detach the upper fan tool and put the upper fan tool into the middle fan groove by hand, namely close the separation curtain wall. At the moment, the upper fan, the middle fan and the desktop plate are arranged in parallel, and the whole desktop plate is a complete and flat plane, so that teachers and students or students can conveniently communicate with each other. For convenience of description, this is called "normal mode" or "public mode". When the isolation curtain wall is opened, the isolation curtain wall is suitable for occasions of attentive learning or examination, and is called as an attentive mode or an examination mode for convenient distinction. Certainly, the patent has a third mode, namely the switching top plate is buckled, and the desktop of the patent is not different from a common desk at the moment, is suitable for occasions such as a duty meeting and an event taking place, and is called as an activity mode or a duty mode for the convenience of distinguishing. In this patent, still install ejecting device on the desktop board, ejecting device's main effect can take out the upper fan utensil from well fan utensil fast, is convenient for like this the student according to actual need fast switch over the user mode.

In this patent, the pushing-out means is mainly composed of a pushing-out groove 89, a pushing-out rod 90, an inner tension spring 93, and a pushing-out hole 94. The pushing groove is arranged at the swing port of the middle support plate, and the inner end of the pushing groove is communicated with the middle fan groove. The push-out rod is inserted in the push-out groove in a sliding mode and can slide back and forth along the push-out groove. In this patent, the swing end terminal surface of upper fan utensil is the excessive convex arc face of rounding off, and the swing section of upper fan utensil is the longer shorter wedge of lower lateral wall of side wall behind the lock to well fan groove, and the setting of ejector lever inner is to the wedge that has the concave arc face with upper fan utensil swing end matched with. In this patent, the desktop board is provided with a push-out hole corresponding to the outer end of the push-out rod, so that when the upper fan needs to be taken out, the push-out rod is pushed forwards, and the concave arc surface of the push-out rod pushes out the swing end of the upper fan out of the middle fan groove along the convex arc surface of the upper fan when the push-out rod moves forwards, so that the upper fan can be taken out smoothly, and the operation is very simple. In this patent, push rod plates 91 are fixedly provided on both sides of the top surface of the push rod, and a push rod groove 92 is formed between the two push rod plates. The inner tension spring is arranged in the push rod groove and is connected with the inner section of the push rod and the opening of the push groove, so that the push rod can be automatically reset after the upper fan is pushed out.

In this embodiment, the mute assembly includes a housing 102 fixedly mounted on the headset cord 101, a control board 103 electrically connected to the headset cord is disposed in an inner cavity of the housing, and a button 104 engaged with the control board in a press-and-trigger manner is disposed on the housing. The housing is a closed housing with a cavity, the two ends of the housing are respectively provided with a housing inlet hole 105 and a housing outlet hole 106 which are assembled with the headset wires in a sleeved mode, the housing inlet hole and the housing outlet hole are respectively and fixedly provided with an elastic ring 107, and the elastic rings are fixedly sleeved on the corresponding headset wires. The upper part of the shell is provided with an operation hole 108 matched with the button in a sleeved mode. The button comprises a button 109 which is inserted and matched with the operation hole, an elastic membrane 110 is annularly arranged at one end of the button extending into the shell, and the peripheral part of the elastic membrane is sealed and adhered to the inner wall of the shell at the periphery of the operation hole. The control panel is provided with a pressure sensitive sensor 111 which is press-fitted with the button. The inner cavity wall of the shell wire inlet end is fixedly provided with a front plug pair consisting of two elastic plugs 112 which are correspondingly arranged at an upper interval and a lower interval, the front plug pair is respectively matched with the upper side surface and the lower side surface of the wire inlet end of the control plate in an elastic supporting manner, the inner cavity wall of the shell wire outlet end is fixedly provided with a rear plug pair consisting of two elastic plugs which are correspondingly arranged at an upper interval and a lower interval, and the rear plug pair is respectively matched with the upper side surface and the lower side surface of the wire outlet end of the control plate in an. The lower part of the shell is provided with a sound hole 116 corresponding to the MIC115 on the control panel, the outer wall of the shell corresponding to the sound hole is provided with a sound hole groove 117 larger than the sound hole, and waterproof cloth 118 is fixedly arranged in the sound hole groove.

in this patent application, the control panel is suspended in the housing inner chamber, and this kind of structure mainly realizes through housing, control panel and setting up the elasticity stopper in the housing, with both ends elasticity press fit's headset line around the housing. Particularly, in this patent, the fixed suit of housing is in headset line middle part position on the upper side, is close to the position of earphone promptly, can be convenient for like this patent receive the sound that user's oral area was published and conveniently carry out on-off control and volume control with the hand, and is very convenient. In this patent, the housing is a closed shell with a cavity therein, and for convenience of operation, the shell is elliptical. For convenience of description, the shell is laid flat, and two ends of the shell in the length direction are respectively called front and back, and the opposite upper, lower, left and right sides are respectively the upper side, the lower side, the left side and the right side. In this patent, the casing both ends are equipped with a round hole with headset line cover assembly respectively, promptly: a shell inlet hole and a shell outlet hole. In the patent, two ends of the shell are respectively provided with an earphone line, and the middle part of the earphone line is fixedly sleeved with an elastic ring. The elastic ring is matched with the corresponding shell inlet hole or the shell outlet hole in a clamping way, so that the basic purpose that the earphone cord is fixedly connected with the shell through the elastic ring and is hermetically connected with the shell through the elastic ring is achieved, and the earphone cord extends into the shell and is electrically connected with the control panel is achieved. In this patent, casing upper portion is equipped with an operation hole, and the downthehole cartridge of operation has the button, and the button can slide from top to bottom relative to the operation hole. In this patent, the button includes a button and an elastic membrane, and wherein, button and operation hole cartridge cooperation, the elastic membrane rigid coupling is in the button and extends to the one end in the casing also be the inner, and the elastic membrane encircles and extends the setting to the button all around. In this patent, the peripheral portion of the elastic membrane is fixedly adhered to the inner wall of the housing outside the operation hole, which is equivalent to the installation of the key in the operation hole through the elastic membrane. Because the whole elastic membrane is blocked on the inner cavity wall of the cover shell at the inner end of the operation hole, the operation hole is equivalently blocked, dirt such as moisture, dust and the like is fundamentally prevented from entering the shell, and the reliable operation and the long service life of the device are ensured. Because the elastic membrane has elasticity, when the key is pressed down, the elastic membrane expands to enable the key to enter the inner cavity of the shell; when the hand is released, the button can automatically bounce and reset under the elastic action of the elastic membrane. In conclusion, no matter when pressing the button, still when the button automatic re-setting, the gap between button and the operation hole is sealed by the elastic membrane all the time, has guaranteed the leakproofness of casing, has guaranteed the waterproof, dampproofing, chalk dust resistance performance of this patent. In this patent, install pressure sensitive sensor on the control panel, pressure sensitive sensor's position corresponds the setting with the button, and consequently, pressure sensitive sensor will send switching signal or volume control signal (realize through pressing the number of times) through the headset line to the electronic equipment who is connected with the headset line when the button is pressed to the realization is very convenient to the control and the volume control of conversation. In this patent, the core structure of interior suspension structure mainly has preceding stopper pair and the realization of back stopper pair that sets firmly on the casing inner wall, and wherein, preceding stopper pair includes two elasticity stoppers that set firmly in casing inlet wire end (front end) inner chamber wall, and the interval corresponds the setting from top to bottom of these two elasticity stoppers. Similarly, the rear plug pair comprises two elastic plugs fixedly arranged on the inner cavity wall of the shell outlet end (rear end), and the two elastic plugs are correspondingly arranged at intervals up and down. In this patent, preceding stopper to respectively with the anterior upper and lower both sides face elastic support cooperation of control panel, back stopper to respectively with the upper and lower both sides face elastic support cooperation at control panel rear portion, like this, whole control panel just by preceding stopper to with back stopper to elastic support in the casing inner chamber, be in the state of similar suspension. In this patent, both ends all are connected with corresponding headset line around the control panel, because the headset line is softer and headset line passes through elastic ring and casing fixed connection, therefore, the suspended state of control panel is realized jointly by soft preceding stopper pair, back stopper pair and headset line pair (two headset lines). Make the control panel be in the main purpose of suspension state, be exactly that MIC on the control panel is in the suspension state, sound transmission can not receive the influence when this patent receives the friction even striking like this, because preceding stopper to, back stopper to and headset line pair can cushion this kind of impact, avoided the harsh noise that traditional drive-by-wire earphone appeared this moment, fundamentally has guaranteed the function of this patent antidetonation and the function of the smoothness of conversation. In this patent, the casing lower part is equipped with a sound hole, and the MIC position on sound hole and the control panel corresponds the setting, just so can convenient, swiftly gather speech signal. In this patent, be equipped with a sound hole groove on the casing outer wall that corresponds with the sound hole, the sound hole trench is located the sound hole outer end and will be big than the aperture of sound hole. The sound hole inslot sets firmly the tarpaulin, and the tarpaulin covers whole sound hole and has waterproof performance, consequently can prevent moisture, water droplet, chalk dust and get into the sound hole and then influence headset drive-by-wire transaudient subassembly's work, has guaranteed the reliability of this patent.

In this patent, the outside cover of housing is equipped with gum cover 131, and the gum cover has better elasticity, consequently touches when the external object even collides when the housing, and the gum cover can better cushion the vibrations that the striking arouses to effectively alleviate the influence to housing internal control board and MIC, guaranteed the pickup quality. In this patent, the rubber sleeve is mainly composed of a sleeve 132, which is in a shape of a circular tube and is sleeved and matched with the middle of the housing. In this patent, be equipped with operation panel 135 on the housing lateral wall in the operation hole outside, the operation panel is a platform, and the position is lower relatively to in the height of prominent button, the person of facilitating the use operates the button, and is very humanized. In this patent, the operation panel extends the setting along housing length, can make the user only need touch roughly with the hand under the condition of need not observing like this, can judge the position of operation panel fast, and then can touch the position of button fast, helps teacher's blind operation, and fundamentally has avoided traditional headset to observe the distraction problem that the operation position leads to because of the low head. In this patent, the operation panel both ends set firmly with housing tip matched with arc platform 134, the sleeve centre gripping is between two arc platforms, therefore sleeve both ends and the spacing cooperation of arc platform, fundamentally has guaranteed sleeve suit back can not the axial float. In this patent, the bottom of the sleeve is provided with the mesh 133 corresponding to the sound hole, so that the sleeve does not obstruct the sound transmission in the sound hole, and can also fundamentally buffer the friction and even the impact of an external object on the sound hole, thereby ensuring the undistorted transmission of the sound. In this patent, the top of the sleeve is provided with a keyhole 136 which fits over the key, so that the arrangement of the sleeve does not have any adverse effect on the operation of the key. The suit cooperation of keyhole and button has the second effect in addition, just be spacing each other, can prevent effectively that the relative housing of sleeve from coaxial rotating, has guaranteed the stability in use of this patent.

In conclusion, in the patent, the casing is provided with the operation hole, the casing inlet hole, the casing outlet hole and the sound hole which are communicated with the outside, wherein the operation hole is elastically sealed by the elastic membrane, the casing inlet hole and the casing outlet hole are elastically sealed by the elastic ring, and only the sound hole is blocked by the waterproof cloth in a breathable and waterproof manner, so that the whole casing is breathable, sound-permeable and waterproof, water vapor, water drops and chalk dust cannot enter the casing fundamentally, and the working reliability of the patent is ensured. In addition, the control panel is in accurate suspended state under the elastic support of preceding stopper to, back stopper to and two headset lines in front and back, has effectively cushioned the produced body transmission noise of external collision, the friction to this patent housing, has improved the sound quality greatly. Therefore, this patent has moisture proof, waterproof, prevents the chalk dust function, still has and prevents falling, antidetonation function, is particularly suitable for the teacher to give lessons and uses.

In this embodiment, the button further includes a spring-shaped support plate 119 fixedly connected to the inner end of the button, the left and right sides of the end of the spring-shaped support plate are respectively provided with a clamping groove 120, and the inner wall of the housing is fixedly provided with a clamping column 121 which is clamped and assembled with the clamping grooves. The inner end of the key is fixedly connected with an elastic support plate which is in a long strip shape and extends backwards along the length direction of the inner cavity of the housing. The left side and the right side of the tail section of the elastic support plate are respectively provided with a clamping groove, and the clamping grooves extend up and down. Two clamping columns which extend up and down are fixedly arranged on the inner wall of the shell, and the clamping columns are correspondingly clamped and matched with the clamping grooves, so that the elastic support plate is fixedly installed. In this patent, the elastic support plate has elasticity, so the elastic support plate can provide elastic support for the key at the front end. Therefore, the key can be supported by the elastic membrane and the elastic support plate, so that the key has better resetting property and more comfortable hand feeling when being pressed.

In this patent, the inner wall of the housing is further fixedly provided with an elastic collar 122 which is sleeved and matched with the MIC. After setting up the elastic sleeve ring on shells inner wall, not only can carry out elastic support spacing to MIC, cushion the impact when receiving striking vibrations, moreover, because the elastic sleeve ring position is suit complex with the sound hole, consequently can also provide the direction for placing of control panel when the installation, guaranteed the accuracy nature and the installation effectiveness of installation.

In this embodiment, the elastic ring includes a ring body 123 fixedly connected to the earphone line, and a ring groove 124 capable of elastically fitting and fitting with the housing inlet hole or the housing outlet hole is annularly provided on the outer peripheral wall of the ring body. The ring body is in a disc shape and has a certain thickness. The ring groove is arranged on the peripheral wall of the ring body, the cross section of the ring groove is C-shaped and just corresponds to the inner arc surfaces of the shell inlet hole and the shell outlet hole, so that when the ring groove is clamped on the shell inlet hole or the shell outlet hole, the ring body is elastically sealed and clamped with the shell inlet hole or the shell outlet hole, and the tightness, the waterproofness and the dustproof performance are ensured.

In this patent, the housing includes an upper cover 125 and a lower base 126 that snap together, and the upper cover and the lower base are sealed together by glue or directly thermally fused together. During specific manufacturing, the shell is divided into an upper part and a lower part, namely an upper cover and a lower seat, which are correspondingly buckled together up and down. In order to ensure the integral sealing performance, the upper cover and the lower seat are fixedly connected together in a sealing mode through glue, or are directly and thermally welded together, and then are welded together through an ultrasonic welding machine.

In this embodiment, a support rib 137 for supporting and matching with the console is fixed on the inner wall of the sleeve. After the supporting ribs are arranged on the inner wall of the sleeve, the supporting ribs have two functions, namely, the supporting ribs fill a cavity between the operating platform and the inner wall of the sleeve, so that the whole touch feeling is fuller, and the hand feeling is better when the operating platform is held; and secondly, the rotating friction force of the sleeve and the housing can be increased, the relative rotation of the sleeve and the housing is effectively prevented, and the reliability of the sleeving and matching of the patent is ensured.

In practical applications, the controller can be implemented by a video recorder and a video switcher, and the structure and the operation principle thereof belong to the well-known technology and are not described in detail again.

Claims

1. The utility model provides a teaching device is assisted in classroom special use, includes the table body (1), and the table body (1) includes table leg (2), desktop board (3) and table hole (95), characterized by: the front part of the desktop plate (3) is hinged with a switching top plate (4) which can be buckled on the desktop plate (3) through a damping hinge device and can automatically keep an opening state when being opened; a square plateform (5) is fixedly and annularly arranged at the edge part of the buckling surface of the switching top plate (4), two longitudinally extending plate beams (6) are arranged at the middle part of the buckling surface of the switching top plate (4) at intervals, and the plate beams (6) divide the inner cavity of the plateform (5) into a middle main cavity (7), a left cavity (8) positioned at the left side and a right cavity (9) positioned at the right side; a display (10) is arranged in the main cavity, a pocket (11) is arranged in the left cavity, an auxiliary headset (12) which is electrically connected with the display in a plug-in mode is arranged in the pocket, a stationery bag (13) is arranged in the right cavity, and stationery (14) is arranged in the stationery bag; the classroom teaching machine also comprises a controller (15) electrically connected with the plurality of displays, wherein the input end of the controller is electrically connected with a camera (16) capable of being installed at the top of a classroom, the classroom teaching machine also comprises a communicator (17) capable of being in wireless communication with the controller, the communicator is electrically connected with a main headset (18) in a plug-in manner, and a headset wire of the main headset is electrically connected with a mute assembly for controlling the main headset; the damping hinge device comprises a transverse hinge shaft (19) which is fixedly arranged on the table top plate and extends transversely, a plate sleeve (20) which is in fit and running fit with the transverse hinge shaft is fixedly connected to the switching top plate (4), plate gears (21) are coaxially and fixedly connected to two end parts of the transverse hinge shaft, a swinging wheel (22) with the diameter far larger than that of the plate gears is arranged in the table hole (4), intermediate wheels (23) which are respectively in transmission engagement with the swinging wheel and the plate gears are also arranged in the table hole, and an intermediate hole which is matched with the intermediate wheels is arranged at the edge part of the table top plate (3); the edge part of the swinging wheel is fixedly connected with a swinging plate (24) with the plate surface being flush with the up-down swinging track, and damping parts (98) are arranged on the swinging plate and the wall of the desk hole; the wall of the desk hole is also provided with a trigger device (97) which can be triggered by the swing plate to automatically communicate the display and the controller when the switching top plate is lifted, an isolation curtain wall which can be automatically extended along with the lifting of the switching top plate is arranged between two sides of the desk panel and the switching top plate, the isolation curtain wall comprises a desk box (55) which is upwards arranged at the side openings of the left side and the right side of the desk panel, a lower fan (57) is clamped in the desk box through a lower mounting tool (56), the left side and the right side of the switching top plate are provided with upper grooves (58), an upper fan (60) is clamped in the upper grooves through an upper mounting tool (59), a middle fan (61) is arranged between the upper fan and the lower fan, the middle fan is clamped on a transverse hinge shaft through a middle mounting tool (62), and elastic cloth (63) is arranged between the hinge section of the upper fan and the hinge section of the middle fan as well as between the hinge section of the, folding plate chains (64) are respectively arranged between the upper fan swing section and the middle fan swing section and between the middle fan swing section and the lower fan swing section, the folding plate chains are correspondingly connected with the adjacent edges of the elastic cloth, and each folding plate chain comprises a plurality of plastic sheets (65) which are folded and connected end to end; the mute component comprises a housing (102) fixedly sleeved on the headset wire (101), a control panel (103) electrically connected with the headset wire is arranged in the inner cavity of the housing (102), a button (104) which is matched with the control panel in a pressing and triggering way is arranged on the housing, the housing is a closed housing with a cavity, the two ends of the housing are respectively provided with a housing inlet (105) and a housing outlet (106) which are assembled with the headset wire sleeve, an elastic ring (107) is respectively clamped in the housing inlet (105) and the housing outlet (106), the elastic ring is fixedly sleeved on the corresponding headset wire, the upper part of the housing is provided with an operation hole (108) which is assembled with the button, the button comprises a key (109) which is inserted and matched with the operation hole, one end of the key extending into the shell is annularly provided with an elastic membrane (110), the peripheral part of the elastic membrane is hermetically adhered to the inner wall of the shell at the periphery of the operation hole, and the control panel is provided with a pressure-sensitive sensor (111) which is in press fit with the button; a front plug pair consisting of two elastic plugs (112) which are correspondingly arranged at an upper interval and a lower interval is fixedly arranged on the inner cavity wall of the inlet end of the shell, the front plug pair is respectively matched with the upper side surface and the lower side surface of the inlet end of the control plate in an elastic supporting manner, a rear plug pair consisting of two elastic plugs which are correspondingly arranged at an upper interval and a lower interval is fixedly arranged on the inner cavity wall of the outlet end of the shell, and the rear plug pair is respectively matched with the upper side surface and the lower side surface of the outlet end of the control plate in an; a sound hole (116) which is arranged corresponding to the MIC (115) on the control panel is arranged at the lower part of the shell, a sound hole groove (117) which is larger than the sound hole is arranged on the outer wall of the shell corresponding to the sound hole, and waterproof cloth (118) is fixedly arranged in the sound hole groove; the rubber sleeve (131) is sleeved outside the housing (102), and the rubber sleeve (131) comprises a round tubular sleeve (132) which is sleeved and matched with the middle part of the housing (102); an operation table (135) which is convenient for the protrusion of the keys (109) and is relatively low and extends along the length of the casing is arranged on the outer side wall of the casing (102) at the outer side of the operation hole (108), arc-shaped tables (134) which are in limit fit with the two ends of the sleeve (132) are fixedly arranged at the two ends of the operation table (135), mesh holes (133) which are arranged corresponding to the sound holes (116) are arranged at the bottom of the sleeve, and key holes (136) which are in sleeved fit with the keys (109) are arranged at the top of the sleeve (; the lower mounting tool comprises a lower far groove (75) which is arranged at one end of the table box far away from the transverse hinge shaft and is clamped and matched with the lower fan, a lower near groove (76) extending along the table box is arranged at one end of the table box close to the transverse hinge shaft, a lower sliding block (78) capable of sliding back and forth along the lower near groove is arranged in the lower near groove through a lower spring (77), the outer end face of the lower sliding block is a concave arc surface, and the outer section of the lower sliding block is in a wedge shape protruding axially at one side far away from the bottom of the groove; the lower fan comprises a lower bottom rod (79) with one end capable of being matched with the lower far groove in a plugging mode, the other end of the lower bottom rod is hinged with a lower supplementing rod (80), the lower supplementing rod comprises a hinge section matched with the lower bottom rod in a hinged mode and a clamping section matched with the lower near groove in a clamping mode, the hinge section is a C-shaped groove section (81) capable of being matched with the lower bottom rod in a semi-surrounding and sleeved mode, an iron sheet is fixedly connected to the inner bottom surface of the C-shaped groove section, a lower magnetic sheet (82) matched with the iron sheet in an adsorption mode is fixedly connected to the lower portion of the lower bottom rod, and a lower pull handle block (83) far away from the switching top plate is fixedly arranged on; the front end face of the clamping section is a convex arc face corresponding to the outer end face of the lower slider, and the front section of the clamping section is a wedge shape protruding forwards close to one side of the bottom of the groove.

2. The classroom-specific teaching aid of claim 1, wherein: the button also comprises a spring-shaped support plate (119) fixedly connected with the inner end of the button, the left side and the right side of the tail end of the spring-shaped support plate are respectively provided with a clamping groove (120), and the inner wall of the shell is fixedly provided with a clamping column (121) which is clamped and assembled with the clamping grooves.

3. The classroom-specific teaching aid of claim 2, wherein: an elastic lantern ring (122) which is sleeved and matched with the MIC is fixedly arranged on the inner wall of the shell.

4. The classroom-specific teaching aid of claim 3, wherein: the elastic ring comprises a ring body (123) fixedly connected with the headset wire, and a ring groove (124) which can be elastically clamped and matched with the shell inlet hole or the shell outlet hole is annularly arranged on the peripheral wall of the ring body.

5. The classroom-specific auxiliary teaching device as claimed in any one of claims 1-4, wherein: the shell comprises an upper cover (125) and a lower seat (126) which are buckled together up and down, and the upper cover (125) and the lower seat (126) are fixedly connected together in a sealing mode through glue or are directly and thermally fused together.

6. The classroom-specific teaching aid of claim 5, wherein: and a support rib (137) which is in support fit with the operating platform (135) is fixedly connected to the inner wall of the sleeve (132).