CN108388011B

CN108388011B - A super clear piece equipment of seeing for image branch of academic or vocational study

Info

Publication number: CN108388011B
Application number: CN201810214777.6A
Authority: CN
Inventors: 刘新峰; 王叙馥; 卢承慧; 练陈敏
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: Affiliated Hospital of University of Qingdao
Priority date: 2018-03-15
Filing date: 2018-03-15
Publication date: 2020-10-20
Anticipated expiration: 2038-03-15
Also published as: CN108388011A

Abstract

The invention discloses an ultra-clear film watching device for an imaging department, which structurally comprises a head top fixing belt, a buckle, an ultra-clear film watching VR, a tightening device, a head sleeve and a fixing buckle, wherein the tightening device is arranged on the right side of the ultra-clear film watching VR and is tightly fixed on the outer wall of the ultra-clear film watching VR, the head sleeve is arranged at the rear end of the ultra-clear film watching VR, one end of the head sleeve is tightly fixed on the other end of the ultra-clear film watching VR, the head sleeve is in clearance fit with the tightening device, and the head sleeve can be quickly tightened by pressing a pressure rod arranged on the tightening device so as to be tightly fixed on a head bag, so that the film watching quality and the continuous visual enjoyment are improved.

Description

A super clear piece equipment of seeing for image branch of academic or vocational study

Technical Field

The invention relates to an ultra-clear film viewing device for an imaging department, belonging to the field of film viewing devices.

Background

A movie is a technology that images (and sounds) of external objects are recorded on a film by means of photographing (and recording) according to the principle of "persistence of vision", and moving images (and synchronized sounds) are generated on a screen to express certain content by projecting (simultaneously restoring sounds).

Virtual reality head-mounted display equipment, referred to as VR head-mounted VR glasses for short, is a product which utilizes a plurality of technology sets such as simulation technology, computer graphics man-machine interface technology, multimedia technology, sensing technology, network technology and the like, and is a brand-new man-machine interaction means created by means of computers and latest sensor technology. VR head-display VR glasses are a cross-era product. Not only is every fan surprised and happy, but also the fan is deeply fascinated because the birth and prospect of the fan is unknown.

The not hard up condition appears in the long time of prior art VR glasses wearing easily to cause the sight shadow quality to descend, and do not possess the function of tightening up fast, can not in time tighten up the fixed band.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an ultra-clear film viewing device for an imaging department, so as to solve the problems that the VR glasses are easy to loosen after being worn for a long time, the viewing quality is reduced, the VR glasses do not have a quick tightening function, and a fixing belt cannot be tightened in time.

In order to achieve the purpose, the invention is realized by the following technical scheme: a super clear film watching device for an image department structurally comprises a head top fixing belt, a buckle, a super clear film watching VR, a tightening device, a head cover and a fixing buckle, wherein the tightening device is arranged on the right side of the super clear film watching VR and is tightly fixed on the outer wall of the super clear film watching VR;

the tightening device comprises a tightening mechanism, an electric control transmission mechanism, a stop mechanism and a protective shell, wherein the tightening mechanism is arranged in the protective shell, the tightening mechanism and the protective shell are in clearance fit, the electric control transmission mechanism is arranged below the tightening mechanism, the electric control transmission mechanism is matched with the tightening mechanism, the stop mechanism is arranged below the electric control transmission mechanism, the stop mechanism and the electric control transmission mechanism are in clearance fit, and the stop mechanism is matched with the tightening mechanism.

Furthermore, the tightening mechanism is composed of a pressure lever, a first slide rail, a moving contact, a first spring, a bracket, a static contact, a motor, a rotating shaft and a first gear.

Furthermore, a pressure lever is arranged at the central position inside the bracket, first slide rails are arranged at the upper end and the lower end of the pressure lever, the first slide rails are fixed on the bracket through screws, a moving contact is arranged at the left end of the pressure lever, the moving contact is fastened and fixed on the pressure lever, the pressure lever is connected with the first slide rails in a sliding manner through the moving contact, a static contact is arranged at the left side of the bracket and is tightly attached and fixed on the bracket, the static contact is matched with the moving contact, a first spring is arranged between the static contact and the moving contact, the left end and the right end of the first spring are respectively fixed on the bracket and the moving contact, a motor is arranged at the left side of the bracket, the moving contact and the static contact are connected with the motor through wires, a rotating shaft is arranged at the central position of the bottom of the motor, the rotating shaft and the, the first gear is buckled and fixed on the rotating shaft.

Furthermore, the electric control transmission mechanism consists of an anode conducting strip, a cathode conducting strip, a first roller, a fixed long plate, a power supply, a bottom plate, an electromagnet, a second roller, an armature, a first rack, a movable rod, a second slide rail, a vertical rod and a second spring.

Furthermore, the bottom of the fixed long plate is provided with a power supply, the power supply is fixed on the bottom surface of the fixed long plate through screws, the top of the fixed long plate is provided with an anode conducting strip and a cathode conducting strip from left to right, the anode conducting strip is matched with the cathode conducting strip, the bottom of the anode conducting strip is provided with a first roller, the first roller is fixed on the anode conducting strip through screws, the anode conducting strip and the cathode conducting strip are connected with the power supply through wires, a bottom plate is arranged below the power supply, the bottom center of the bottom plate is provided with a vertical rod, the upper end of the vertical rod is buckled and fixed on a groove on the bottom surface of the bottom plate, the right side of the vertical rod is provided with an electromagnet, the electromagnet is vertically fixed on the bottom surface of the bottom plate, the left side and the right side of the vertical rod are provided with second slide, the pole setting on be equipped with the movable rod and become cross structure and movable rod and second slide rail sliding connection, the movable rod right-hand member be equipped with the second gyro wheel, the second gyro wheel pass through the screw fixation on the movable rod, pole setting left side be equipped with the second spring, the second spring about both ends fix respectively on the bottom plate bottom surface and on the movable rod top surface, the electro-magnet below be equipped with armature, armature hug closely and fix on the movable rod, armature and electro-magnet cooperate, movable rod bottom be equipped with first rack, first rack upper end lock fix on the movable rod.

Furthermore, the stop mechanism comprises a movable frame, a first sliding block, a first sliding groove, a second rack, a second gear, a connecting rod, a push rod sliding groove, stop pliers, a second sliding groove, a second sliding block and a third gear.

Furthermore, a first sliding block is arranged on the third gear, the first sliding block is vertically fixed on the third gear, a movable frame is arranged on the first sliding block, a first sliding groove is formed in the movable frame through the central position and is in sliding connection with the first sliding block, a second sliding groove is formed in the left side of the movable frame and is welded with the movable frame, the second sliding groove is in sliding connection with the second sliding block, a second rack is arranged at the bottom of the movable frame and is buckled and fixed on the movable frame, a second gear is arranged below the movable frame and is meshed with the second rack, a push rod is arranged below the second gear, a connecting rod is arranged between the push rod and the second gear, the upper end of the connecting rod is welded with the second gear, the lower end of the connecting rod is movably connected with the push rod, a push rod sliding groove is formed in the bottom of the push rod, the push rod sliding groove is connected with the push rod in a sliding mode, the left end of the push rod is provided with a stop clamp, and the stop clamp is fastened and fixed on the push rod.

Further, the stop mechanism is matched with the first gear through the stop pliers.

Furthermore, the upper end of a positive conducting strip arranged on the electric control transmission mechanism is connected with the moving contact.

Furthermore, a third gear arranged on the stopping mechanism is meshed with the first rack.

Advantageous effects

The invention relates to an ultra-clear film viewing device for imaging department, when a headgear needs to be tightened, a pressure bar is pressed, the pressure bar can drive a moving contact to move leftwards along a first sliding rail to be contacted with a fixed contact, a first spring is compressed at the moment, when the fixed contact and the moving contact are closed, a motor is electrified to start working, the motor can tighten a bandage at one end of the headgear through a rotating shaft, because a positive conducting plate is connected with the moving contact, when the moving contact and the fixed contact are closed, the positive conducting plate is separated from a negative conducting plate, a power supply can not supply power to an electromagnet, when a user does not press the pressure bar any more, the positive conducting plate and the negative conducting plate are closed, the power supply can supply power to the electromagnet, the electromagnet can generate magnetism after the electromagnet is electrified, an armature is adsorbed, a movable rod is lifted upwards along a second sliding rail, and the first rack is driven to be lifted upwards, because, therefore, when the first rack lifts upwards, the third gear can be driven to rotate, the first sliding block is arranged on the third gear, the first sliding block can rotate along with the rotation of the third gear, and the movable frame is driven to move leftwards along the second sliding block by the aid of the second sliding groove, as shown in the second drawing, the moving direction of the second rack is consistent with that of the movable frame, and the second rack is meshed with the second gear, so that the second rack can be driven to rotate by the movement of the second rack, the second rack is driven to move leftwards along the sliding groove of the push rod by the aid of the connecting rod, the first gear is stopped by the stop pincers, the rotating shaft can be prevented from rotating, and the fastening degree of the head cover is improved.

According to the super-clear film viewing equipment for the imaging department, the compression bar arranged on the pressing and tightening device can quickly tighten the headgear so as to enable the headgear to be tightly fixed on the head bag, and therefore the film viewing quality and the continuous visual enjoyment are improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of an ultra-clear film viewing apparatus for imaging department according to the present invention.

Fig. 2 is a schematic structural diagram of a tightening device of an ultra-clear film viewing apparatus for imaging department according to the present invention.

FIG. 3 is a first dynamic diagram of a tightening device of an ultra-clear film viewing apparatus for imaging department according to the present invention.

FIG. 4 is a second dynamic diagram of an ultra-clear film viewing apparatus for imaging department according to the present invention.

In the figure: a head top fixing belt-1, a buckle-2, an ultra-clear view VR-3, a tightening device-4, a tightening mechanism-41, a pressure lever-411, a first slide rail-412, a moving contact-413, a first spring-414, a support-415, a static contact-416, a motor-417, a rotating shaft-418, a first gear-419, an electric control transmission mechanism-42, a positive electrode conducting strip-421, a negative electrode conducting strip-422, a first roller-423, a fixed long plate-424, a power supply-425, a bottom plate-426, an electromagnet-427, a second roller-428, an armature-429, a first rack-4210, a movable rod-4211, a second slide rail-4212, an upright rod-4213, a second spring-4214, a stopping mechanism-43, a movable frame-431, a movable frame-429, a movable rod-4213, a, A first sliding block-432, a first sliding groove-433, a second rack-434, a second gear-435, a connecting rod-436, a push rod-437, a push rod sliding groove-438, a locking clamp-439, a second sliding groove-4310, a second sliding block-4311, a third gear-4312, a protective shell-44, a head cover-5 and a fixing buckle-6.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 4, the present invention provides an ultra-clear film viewing apparatus for imaging department, the structure of the utility model comprises a head top fixing belt 1, a buckle 2, an ultra-clear sight film VR3, a tightening device 4, a head cover 5 and a fixing buckle 6, a tightening device 4 is arranged on the right side of the ultra-clear viewing VR3, the tightening device 4 is tightly fixed on the outer wall of the ultra-clear viewing VR3, a head sleeve 5 is arranged at the rear end of the ultra-clear viewing VR3, one end of the head sleeve 5 is tightly attached and fixed at the other end of the ultra-clear viewing VR3 and is in clearance fit with the tightening device 4, a head top fixing belt 1 is arranged above the head cover 5, the head end and the tail end of the head top fixing belt 1 are respectively provided with a buckle 2 and a fixing buckle 6, the buckle 2 and the fixed buckle 6 are fixed on the head top fixing belt 1 through screws, and the head top fixing belt 1 is respectively fixed on the ultra-clear sight film VR3 and the head cover 5 through the buckle 2 and the fixed buckle 6; the tightening device 4 comprises a tightening mechanism 41, an electric control transmission mechanism 42, a stopping mechanism 43 and a protective shell 44, wherein the tightening mechanism 41 is arranged in the protective shell 44, the tightening mechanism 41 and the protective shell 44 are in clearance fit, the electric control transmission mechanism 42 is arranged below the tightening mechanism 41, the electric control transmission mechanism 42 is matched with the tightening mechanism 41, the stopping mechanism 43 is arranged below the electric control transmission mechanism 42, the stopping mechanism 43 and the electric control transmission mechanism 42 are in clearance fit, the stopping mechanism 43 is matched with the tightening mechanism 41, the tightening mechanism 41 comprises a pressure lever 411, a first slide rail 412, a moving contact 413, a first spring 414, a support 415, a static contact 416, a motor 417, a rotating shaft 418 and a first gear 419, a pressure lever 411 is arranged at the center position in the support 415, and first slide rails 412 are arranged at the upper end and the lower end of the pressure lever 411, the first sliding rail 412 is fixed on a support 415 through a screw, a moving contact 413 is arranged at the left end of a pressing rod 411, the moving contact 413 is fastened and fixed on the pressing rod 411, the pressing rod 411 is connected with the first sliding rail 412 through the moving contact 413 in a sliding manner, a fixed contact 416 is arranged at the left side of the support 415, the fixed contact 416 is tightly attached and fixed on the support 415, the fixed contact 416 is matched with the moving contact 413, a first spring 414 is arranged between the fixed contact 416 and the moving contact 413, the left end and the right end of the first spring 414 are respectively fixed on the support 415 and the moving contact 413, a motor 417 is arranged at the left side of the support 415, the moving contact 413 and the fixed contact 416 are connected with a motor 417 through wires, a rotating shaft 418 is arranged at the center of the bottom of the motor 417, the rotating shaft 418 is in clearance fit with the motor 417, and, the first gear 419 is fastened and fixed on the rotating shaft 418, the electric control transmission mechanism 42 is composed of a positive conductive sheet 421, a negative conductive sheet 422, a first roller 423, a fixed long plate 424, a power supply 425, a bottom plate 426, an electromagnet 427, a second roller 428, an armature 429, a first rack 4210, a movable rod 4211, a second sliding rail 4212, an upright rod 4213 and a second spring 4214, the bottom of the fixed long plate 424 is provided with the power supply 425, the power supply 425 is fixed on the bottom surface of the fixed long plate 424 through screws, the top of the fixed long plate 424 is provided with the positive conductive sheet 421 and the negative conductive sheet 422 from left to right, the positive conductive sheet 421 is matched with the negative conductive sheet 422, the bottom of the positive conductive sheet 421 is provided with the first roller 423, the first roller 423 is fixed on the positive conductive sheet 421 through screws, the positive conductive sheet 421 and the negative conductive sheet 422 are connected with the power supply 425 through wires, a bottom plate 426 is arranged below the power supply 425, an upright 4213 is arranged at the center of the bottom plate 426, the upper end of the upright 4213 is fastened and fixed on a groove on the bottom surface of the bottom plate 426, an electromagnet 427 is arranged on the right side of the upright 4213, the electromagnet 427 is vertically fixed on the bottom surface of the bottom plate 426, second sliding rails 4212 are arranged on the left and right sides of the upright 4213, the second sliding rails 4212 are tightly attached and fixed on the outer wall of the upright 4213, a movable rod 4211 is arranged on the upright 4213 and is in a cross structure, the movable rod 4211 is slidably connected with the second sliding rails 4212, a second roller 428 is arranged at the right end of the movable rod 4211, the second roller 428 is fixed on the movable rod 4211 through screws, a second spring 4214 is arranged on the left side of the upright 4213, the upper end and the lower end of the second spring 4214 are respectively fixed on the bottom surface of the bottom plate, the armature 429 is tightly fixed on the movable rod 4211, the armature 429 is matched with the electromagnet 427, the bottom of the movable rod 4211 is provided with a first rack 4210, the upper end of the first rack 4210 is fastened and fixed on the movable rod 4211, the stopping mechanism 43 comprises a movable frame 431, a first sliding block 432, a first sliding groove 433, a second rack 434, a second gear 435, a connecting rod 436, a push rod 437, a push rod sliding groove 438, a stopping clamp 439, a second sliding groove 4310, a second sliding block 4311 and a third gear 4312, the third gear 4312 is provided with the first sliding block 432, the first sliding block 432 is vertically fixed on the third gear 4312, the first sliding block 432 is provided with the movable frame 431, the movable frame 431 is connected with the first sliding block 432 in a sliding manner through the first sliding groove 433 which is arranged at the center position, the left side of the movable frame 431 is provided with the second sliding groove 4310, and the movable frame 431 are welded, the second sliding groove 4310 is slidably connected with a second sliding block 4311, a second rack 434 is arranged at the bottom of the movable frame 431, the second rack 434 is fastened and fixed on the movable frame 431, a second gear 435 is arranged below the movable frame 431, the second gear 435 is engaged with the second rack 434, a push rod 437 is arranged below the second gear 435, a connecting rod 436 is arranged between the push rod 437 and the second gear 435, the upper end of the connecting rod 436 is welded with the second gear 435, the lower end of the connecting rod 436 is movably connected with the push rod 437, a push rod sliding groove 438 is arranged at the bottom of the push rod 437, the push rod sliding groove 438 is slidably connected with the push rod, a stop clamp 439 is arranged at the left end of the push rod 437, the stop clamp 439 is fastened and fixed on the push rod 437, the stop mechanism 43 is matched with the first gear 419 through the stop clamp 439, the upper end of a positive electrode 421 arranged on the electric control transmission mechanism 42 is connected with a movable contact 413, the third gear 4312 provided on the stopping mechanism 43 is engaged with the first rack 4210.

The working principle of the invention is as follows:

when the headgear 5 needs to be tightened, the pressing rod 411 is pressed, the pressing rod 411 drives the movable contact 413 to move leftwards along the first sliding rail 412 to contact with the fixed contact 416, at this time, the first spring 414 is compressed, when the fixed contact 416 and the movable contact 413 are closed, the motor 417 starts to work when being electrified, the motor 417 tightens the bandage at one end of the headgear 5 through the rotating shaft 418, because the positive conductive sheet 421 is connected with the movable contact 413, when the movable contact 413 and the fixed contact 416 are closed, the positive conductive sheet 421 is separated from the negative conductive sheet 422, the power supply 425 does not supply power to the electromagnet 427, when a user does not press the pressing rod 411 any more, the positive conductive sheet 421 and the negative conductive sheet 422 are closed, the power supply 425 supplies power to the electromagnet 427, the electromagnet 427 generates magnetism after being electrified, the armature 429 is adsorbed, the movable rod 4211 is lifted upwards along the second sliding rail 4212, and drives the first rack 4210 to, since the first rack 4210 is engaged with the third gear 4312, when the first rack 4210 is lifted up, the third gear 4312 is driven to rotate, the first slider 432 is disposed on the third gear 4312, the first slider 432 rotates along with the rotation of the third gear 4312, and the movable rack 431 is driven to move leftward along the second slider 4311 by the second sliding slot 4310, as shown in fig. two, at this time, the moving direction of the second rack 434 is consistent with that of the movable rack 431, and since the second rack 434 is engaged with the second gear 435, the movement of the second rack 434 drives the second gear 435 to rotate, so that the push rod 437 is pushed by the connecting rod 436 to move leftward along the push rod sliding slot 438, and the first gear 419 is stopped by the stopping clamp 439, which can prevent the rotation shaft 418 from rotating, and improve the fastening degree of the headgear 5.

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the invention belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.

The electromagnet 427 of the present invention is a device that generates electromagnetism when energized. The electromagnet is magnetic when energized and then disappears when de-energized.

The invention solves the problems that in the prior art, VR glasses are easy to loosen after being worn for a long time, so that the film viewing quality is reduced, the VR glasses do not have the function of quick tightening, and fixing belts cannot be tightened in time.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A super clear film watching device for an image department structurally comprises a head top fixing band (1), a buckle (2), a super clear film watching VR (3), a tightening device (4), a head cover (5) and a fixing buckle (6), wherein the tightening device (4) is arranged on the right side of the super clear film watching VR (3), the tightening device (4) is tightly attached and fixed on the outer wall of the super clear film watching VR (3), the rear end of the super clear film watching VR (3) is provided with the head cover (5), one end of the head cover (5) is tightly attached and fixed on the other end of the super clear film watching VR (3) and the tightening device (4) in clearance fit, the head top fixing band (1) is arranged above the head cover (5), the head and tail ends of the head top fixing band (1) are respectively provided with the buckle (2) and the fixing buckle (6), the buckle (2) and the fixing buckle (6) are fixed on the head top fixing band (1) through screws, crown of head fixed band (1) pass through buckle (2) and fixed buckle (6) to be fixed respectively on super clear sight shadow VR (3) and headgear (5), its characterized in that:

the tightening device (4) is composed of a tightening mechanism (41), an electric control transmission mechanism (42), a stop mechanism (43) and a protective shell (44), wherein the tightening mechanism (41) is arranged in the protective shell (44), the tightening mechanism (41) and the protective shell (44) are in clearance fit, the electric control transmission mechanism (42) is arranged below the tightening mechanism (41), the electric control transmission mechanism (42) is matched with the tightening mechanism (41), the stop mechanism (43) is arranged below the electric control transmission mechanism (42), the stop mechanism (43) is in clearance fit with the electric control transmission mechanism (42), and the stop mechanism (43) is matched with the tightening mechanism (41);

the tightening mechanism (41) consists of a pressure lever (411), a first sliding rail (412), a moving contact (413), a first spring (414), a bracket (415), a fixed contact (416), a motor (417), a rotating shaft (418) and a first gear (419);

a pressure lever (411) is arranged at the center of the inside of the support (415), first sliding rails (412) are arranged at the upper end and the lower end of the pressure lever (411), the first sliding rails (412) are fixed on the support (415) through screws, a moving contact (413) is arranged at the left end of the pressure lever (411), the moving contact (413) is fastened and fixed on the pressure lever (411), the pressure lever (411) is slidably connected with the first sliding rails (412) through the moving contact (413), a fixed contact (416) is arranged at the left side of the support (415), the fixed contact (416) is tightly fixed on the support (415), the fixed contact (416) is matched with the moving contact (413), a first spring (414) is arranged between the fixed contact (416) and the moving contact (413), and the left end and the right end of the first spring (414) are respectively fixed on the support (415) and the moving contact (413), the left side of the bracket (415) is provided with a motor (417), the moving contact (413) and the static contact (416) are connected with the motor (417) through wires, the center of the bottom of the motor (417) is provided with a rotating shaft (418), the rotating shaft (418) and the motor (417) are in clearance fit, the rotating shaft (418) is provided with a first gear (419), and the first gear (419) is fastened and fixed on the rotating shaft (418);

the electric control transmission mechanism (42) consists of an anode conducting strip (421), a cathode conducting strip (422), a first roller (423), a fixed long plate (424), a power supply (425), a bottom plate (426), an electromagnet (427), a second roller (428), an armature (429), a first rack (4210), a movable rod (4211), a second sliding rail (4212), an upright rod (4213) and a second spring (4214);

the bottom of the fixed long plate (424) is provided with a power supply (425), the power supply (425) is fixed on the bottom surface of the fixed long plate (424) through screws, the top of the fixed long plate (424) is provided with an anode conducting strip (421) and a cathode conducting strip (422) from left to right, the anode conducting strip (421) is matched with the cathode conducting strip (422), the bottom of the anode conducting strip (421) is provided with a first roller (423), the first roller (423) is fixed on the anode conducting strip (421) through screws, the anode conducting strip (421) and the cathode conducting strip (422) are connected with the power supply (425) through wires, a bottom plate (426) is arranged below the power supply (425), the center position of the bottom plate (426) is provided with an upright rod (4213), the upper end of the upright rod (4213) is buckled and fixed on a groove in the bottom surface of the bottom plate (426), the right side of the upright rod (4213) is provided with, the electromagnet (427) is vertically fixed on the bottom surface of the bottom plate (426), second slide rails (4212) are arranged on the left side and the right side of the upright rod (4213), the second slide rails (4212) are tightly fixed on the outer wall of the upright rod (4213), a movable rod (4211) is arranged on the upright rod (4213), the upright rod (4213) and the movable rod (4211) form a cross structure, the movable rod (4211) is in sliding connection with the second slide rails (4212), a second roller (428) is arranged at the right end of the movable rod (4211), the second roller (428) is fixed on the movable rod (4211) through screws, a second spring (4214) is arranged on the left side of the upright rod (4213), the upper end and the lower end of the second spring (4214) are respectively fixed on the bottom surface of the bottom plate (426) and the top surface of the movable rod (4211), an armature (429) is arranged below the electromagnet (427), and the armature (429) is tightly fixed on the movable rod (4211), the armature (429) is matched with the electromagnet (427), a first rack (4210) is arranged at the bottom of the movable rod (4211), and the upper end of the first rack (4210) is buckled and fixed on the movable rod (4211);

the stopping mechanism (43) consists of a movable frame (431), a first sliding block (432), a first sliding groove (433), a second rack (434), a second gear (435), a connecting rod (436), a push rod (437), a push rod sliding groove (438), a stopping clamp (439), a second sliding groove (4310), a second sliding block (4311) and a third gear (4312);

the sliding block (432) is arranged on the third gear (4312), the sliding block (432) is vertically fixed on the third gear (4312), the sliding block (432) is provided with a movable frame (431), the movable frame (431) is in sliding connection with the sliding block (432) through a first sliding groove (433) formed in the central position, the left side of the movable frame (431) is provided with a second sliding groove (4310), the second sliding groove (4310) is welded with the movable frame (431), the second sliding groove (4310) is in sliding connection with the sliding block (4311), the bottom of the movable frame (431) is provided with a second rack (434), the second rack (434) is buckled and fixed on the movable frame (431), a second gear (435) is arranged below the movable frame (431), the second gear (435) is meshed with the second rack (434), and a push rod (437) is arranged below the second rack (435), a connecting rod (436) is arranged between the push rod (437) and the second gear (435), the upper end of the connecting rod (436) is welded with the second gear (435), the lower end of the connecting rod (436) is movably connected with the push rod (437), a push rod sliding groove (438) is arranged at the bottom of the push rod (437), the push rod sliding groove (438) is in sliding connection with the push rod (437), a stop clamp (439) is arranged at the left end of the push rod (437), and the stop clamp (439) is buckled and fixed on the push rod (437);

the stop mechanism (43) is matched with the first gear (419) through a stop clamp (439);

the upper end of a positive conducting strip (421) arranged on the electric control transmission mechanism (42) is connected with the moving contact (413);

a third gear (4312) arranged on the stopping mechanism (43) is meshed with the first rack (4210);

when the headgear needs to be tightened, the pressure rod is pressed, the pressure rod can drive the moving contact to move leftwards along the first sliding rail to be contacted with the fixed contact, the first spring is compressed, when the fixed contact and the moving contact are closed, the motor starts to work after being electrified, the motor tightens the bandage at one end of the headgear through the rotating shaft, because the positive conducting plate is connected with the moving contact, when the moving contact and the fixed contact are closed, the positive conducting plate is separated from the negative conducting plate, the power supply does not supply power to the electromagnet any more, when a user does not press the pressure rod any more, the positive conducting plate and the negative conducting plate are closed, the power supply supplies power to the electromagnet, magnetism is generated after the electromagnet is electrified, the armature is adsorbed, the movable rod is upwards lifted along the second sliding rail, the first rack is driven to upwards be lifted, and the first rack is meshed with the third gear, so when the, can drive the third gear rotatoryly, be equipped with a slider on the third gear, a slider can be rotatory along with the rotation of third gear, and the drive adjustable shelf utilizes the second spout to remove left along No. two sliders, the moving direction of second rack is unanimous this moment, because second rack and second gear mesh, so the removal of second rack can drive the second gear rotatoryly, make it utilize the connecting rod to promote the push rod and remove left along the push rod spout, and carry out the locking through the locking pincers to first gear, can prevent the pivot rotation, and improve the fastening degree of headgear.