CN210461588U

CN210461588U - Equipment for realizing page pressing and barrier-free page turning

Info

Publication number: CN210461588U
Application number: CN201921524763.0U
Authority: CN
Inventors: 段沧桑
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-15
Filing date: 2019-09-15
Publication date: 2020-05-05
Anticipated expiration: 2029-09-15
Also published as: CN210397625U

Abstract

The utility model relates to a mechanical device that one kind applied has "mechanical locking-rectilinear ascent-forward rotation-reverse rotation-rectilinear descent-push down and mechanical locking under the state of exerting pressure of pressure point of relieving" function or "mechanical locking-rotatory ascent-rotatory descent-push down and mechanical locking under the state of exerting pressure of pressure point of relieving" function of exerting pressure of pressure point "function realizes pressing the page or leaf and the equipment of the accessible page turning over, the structure and the principle of applied mechanical device have been given, the example form has explained and has realized pressing page or leaf and accessible page turning over one kind of trigger logic and the action order of applied mechanical device pressure point.

Description

Equipment for realizing page pressing and barrier-free page turning

Technical Field

The invention belongs to the field of design and manufacture of transmission equipment, and particularly relates to a high mechanical coupling mechanical device which uses a single power machine to realize 'mechanical locking under the pressure point pressing releasing state-linear ascending-forward rotation-reverse rotation-linear descending-downward pressing and mechanical locking to keep the pressure point pressing state'; and another type of high mechanical coupling mechanism that achieves "mechanical lock in released pressure point applied state-rotational up-rotational down-press and mechanical lock to maintain pressure point applied state".

Background

With the increasing progress of science and technology, the reading of the electronic book is more and more popular, and the electronic book has the advantages of convenience in carrying, large book storage capacity, convenience in page turning and the like. Paper books have a long-standing need. Due to the copyright problem, a plurality of books only have paper versions, and people still prefer the paper books for the books which are used for a long time and need to be read carefully; the electronic book screen is small in size and font, and eyes are easy to fatigue when people read the electronic book screen; especially, when a musical instrument player performs facing to a music score, eyes are dynamic and far away from the music score, the eyes are fatigued more easily, and a paper music book is more needed. Research finds that the current paper book is still the mainstream in occasions such as schools, musical instrument playing and the like, and under the conditions of classical reading, research reading and the like. In general, paper book reading will still be the basic way to read for a longer period of time in the future.

However, paper books need to be stabilized by hands for reading, and the hands are tired when the books are read for a long time. When the musical instrument is played, the music book is upright on the music stand, and the book page needs to be fixed when losing the gravity; however, the existing various fixing methods cause difficulty in page turning, and the page turning can be completed only by several actions of two hands. Therefore, a device with page fixing function and more convenient page turning is needed in the market.

Market research results show that no equipment for ordinary paper books exists in the market at present, and meanwhile, in the market research, even if pages are turned manually, the market demands can be obtained as long as the equipment can automatically complete mechanical actions such as pressing on pages, releasing the pressing state, avoiding turned pages and the like, and the natural manual page turning process of similar pages without any page turning obstacles is realized.

Considering that in the manual page turning process, the pressing points of the page pressing and barrier-free page turning equipment cannot interfere with hands and pages, the action requirement on the pressing points in the technical scheme is as follows: the mechanical locking under the pressure state of the pressure point is released, the straight line rises, the book is stopped after rotating 90 degrees in the forward direction (at the moment, the hand and the turned book page cross the motion range of the pressure point of the page pressing and barrier-free page turning equipment), and the book is reversely rotated by 90 degrees, descends in the straight line, presses down and is mechanically locked to keep the pressure state of the pressure point; or the following steps: the mechanical lock in the pressure point applied state is released-rotation up to 90 ° (where the hand and the turned page crosses the range of motion of the pressure point of the pressing and unobstructed turning device) -rotation down-pressing and mechanical lock to maintain the pressure point applied state. The mechanical response of the pressure point is fast, and the pressure point can act in time along with a page turning hand.

The invention relates to a mechanical device for releasing mechanical locking in a pressure point pressing state, namely linear ascending, forward rotation, reverse rotation, linear descending, pressing down and mechanically locking to keep the pressure point pressing state, and the invention patent of the invention discloses a mechanical mechanism for realizing lifting and rotating actions (ZL 201310490632.6) as the mechanical mechanism in claim 1, which can meet the functional requirements of linear ascending, forward rotation, reverse rotation, linear descending and pressing down.

In addition, research shows that the existing mechanical equipment adopts the schemes of guide rail + self-locking screw rod + turntable + power machine, guide rail + non-self-locking screw rod + turntable + power machine + brake, non-screw rod linear transmission mechanism + turntable + brake to realize the actions of 'straight line rising-forward rotation-reverse rotation-straight line descending-pressing' and realize the position locking and the pressure keeping of a pressing object after the power is cut off. These solutions have these advantages: firstly, if a linear guide rail is used for guiding, ball screw transmission and a driving motor is used for driving a code disc, the positioning precision is very high and the mechanical efficiency is high; secondly, the guide rail is used for guiding and bearing, so that the load capacity is high; thirdly, since the rotation function is realized by using an independent turntable, the precision and the load capacity are high.

Technical problem

Because the existing mechanical equipment needs to realize mechanical movement with two dimensions of lifting and rotating, a guide rail is basically used in translational movement, and a rotary table is used in rotational movement; this reduces the dynamic response capability of the device, increases the size, complexity and cost of the device, and reduces the reliability of the device.

The prior art devices have additional problems if they are to maintain pressure on the object being pressed in an unpowered state.

If a non-self-locking screw drive is used, the following disadvantages are present: firstly, a brake device and a control function thereof need to be added, and extra installation space is needed; secondly, the process of mutual conversion between the braking state and the braking releasing state of the braking device needs dozens of milliseconds or longer, cannot meet the requirement of higher time response, and increases the operation power consumption; thirdly, regular maintenance is required to ensure stability and reliability; fourth, the brake increases the complexity and cost of the device.

If a self-locking screw is used for transmission, the lead angle of the screw is smaller than or equal to the equivalent friction angle (when the lead angle of the screw and the thread sleeve is smaller than or equal to the equivalent friction angle, the thread sleeve has axial self-locking performance on the screw), but at the moment, the lead angle is smaller, the transmission efficiency of the screw is lower, the requirement on the power of a power machine is improved, and the volume, the operation power consumption and the cost of the equipment are increased.

Therefore, in applications requiring millisecond time response, high transmission efficiency, pressure application to the pressing object and self-locking without power, such as page pressing and barrier-free page turning devices, new mechanical devices need to be developed to meet these requirements.

SUMMERY OF THE UTILITY MODEL

In order to realize faster translational motion time response and rotational motion time response under the drive of the same power machine and further improve the reliability and mechanical efficiency of the mechanism, after the inventor finishes the invention patent of 'a mechanical mechanism for realizing lifting and rotating actions' (ZL 201310490632.6) claim 1 mechanical mechanism, two mechanical mechanisms for realizing the lifting and rotating actions by a single power machine, namely 'full-track fusion body (base I + corresponding screw rod mechanism)', and 'track + screw sleeve retainer ring (base II + corresponding screw rod mechanism)', are continuously developed.

The invention adds a pressure point connecting rod, a pressure point and a power machine on the basis of the mechanical mechanisms of the invention patent of the inventor, namely 'a mechanical mechanism for realizing lifting and rotating actions' (ZL 201310490632.6) (claim 1), 'a full-track fusion body (base I + corresponding screw rod mechanism)' and 'a track + screw sleeve retainer ring (base II + corresponding screw rod mechanism)', so as to form different mechanical devices. In the actual engineering design, if the length of the screw sleeve and the thread lead angles of the screw rod and the screw sleeve which are larger than the equivalent friction angle are determined, the critical pressure point connecting rod beam length of the pressure point for realizing the axial self-locking of the screw rod can be obtained by gradually changing the length of the pressure point connecting rod beam (the length of the pressure point connecting rod beam is defined as the distance from the central point of the pressure point applying pressure to a pressure applying object to the axis of the screw rod), and the parameters of the screw rod and the thread lead angles of the screw sleeve for realizing the axial self-locking of the screw rod at the moment, such as the specific length of the screw sleeve, the length of the pressure point connecting rod beam and the like are also; the comprehensive self-locking angle is always larger than the equivalent friction angle of the screw and the thread sleeve. Under the condition that the pressure point applies pressure to the pressure-applying object and stops applying torque to the screw rod, when the thread lead angles of the screw rod and the screw sleeve are smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure-applying object is maintained, and when the thread lead angles of the screw rod and the screw sleeve are larger than the comprehensive self-locking angle, the pressure of the brake device for maintaining the pressure of the pressure point on the pressure-applying object is increased; therefore, a mechanical device of a single power machine for realizing mechanical functions of 'mechanical locking under the pressure point pressing state release, straight line rising, forward rotation, reverse rotation, straight line descending, pressing down and mechanical locking to keep the pressure point pressing state' is formed.

For the mechanical function requirements of mechanical locking, rotation ascending, rotation descending, pressing and mechanical locking under the pressure point pressing releasing state to keep the pressure point pressing state, the inventor develops a mechanical device consisting of a base, a worm wheel shaft, a pressure point connecting rod and a power machine.

The specific mechanical devices for realizing the mechanical functions of "mechanical locking in a pressure point releasing state, linear ascending, forward rotating, reverse rotating, linear descending, pressing down and mechanical locking to maintain the pressure point pressing state" and "mechanical locking in a pressure point releasing state, mechanical locking in a rotation ascending, rotation descending, pressing down and mechanical locking to maintain the pressure point pressing state" can be independently applied to the page pressing and barrier-free page turning device of the present application, and the respective independent technical characteristics are respectively embodied in the claims 2 to 5 of the present application. Based on the specific mechanical devices, a control device consisting of a sensor or an image recognizer, a driver and a controller is added, so that the equipment for pressing and turning pages without barriers can be formed.

The invention relates to a mechanical device I for realizing 'mechanical locking under the state of releasing pressure point pressing, linear ascending, forward rotation, reverse rotation, linear descending, pressing down and mechanical locking to keep the state of pressing point pressing', which comprises a base I, a screw rod, a screw sleeve guide platform, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base I, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive self-locking angle and a manual mode is needed, a manual wheel is fixedly arranged at one end of the screw rod and is coaxial with the screw rod, if the lead angle of the screw rod and the screw sleeve is larger than the comprehensive self-locking angle, a brake device which is fixed on the first base and used for braking the screw rod or the screw sleeve in a braking state needs to be added; wherein, the pressure point is about screw rod axial auto-lock when the lead angle of screw rod, swivel nut is less than or equal to comprehensive auto-lock angle, has a set of spigot surface on the base one: the screw sleeve is provided with a screw sleeve guide platform which is an independent part fixedly connected with the screw sleeve or is a screw sleeve characteristic generated in the screw sleeve, the base I, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide platform form a motion relation by three motion pairs, wherein the first one is a rotating pair connected between the base I and the screw rod, the second one is a screw pair connected between the screw rod and the screw sleeve, the third is that connect the friction pair between spigot surface and swivel nut direction platform, and the screw rod passes through the revolute pair to be installed on base one, and the screw rod passes through spiral cooperation installation with the swivel nut, and the swivel nut direction platform passes through the friction pair and contacts with the spigot surface, and pressure point connecting rod fixed mounting is on the swivel nut, and the pressure point is the independent spare part of fixed mounting on the pressure point connecting rod or with the partial whole spare part that pressure point connecting rod integrated into one piece came out.

When positive torque is applied to the screw (the positive torque is larger than torque required by a pressure release point in relation to the axial self-locking state of the screw or a braking state is released), the screw pushes the screw sleeve to ascend along the first straight guide surface, when the positive torque is ascended to the top end of the first straight guide surface, the screw sleeve guide table is contacted with the first rotary guide surface, the rotary component force generated by the screw rod to the screw sleeve and the rotary component force generated by the pair of screw sleeves of the first rotary guide surface are in the same direction as each other, so that the rotary force of the screw sleeve is formed, the screw axial component force generated by the screw rod to the screw sleeve overcomes the screw axial component force generated by the pair of screw sleeves of the second rotary guide surface, so that the axial force of the screw sleeve is formed, and under the combined action of the rotary force and the axial force, the screw sleeve rotates and ascends along the first rotary; when reverse torque is applied to the screw, the movement principle of the screw is the same as that of the forward torque, the screw pushes the screw sleeve to reversely descend along the second rotary guide surface, and after the screw sleeve is separated from the second rotary guide surface and contacts the second upper straight guide surface, the screw sleeve descends along the second straight guide surface until a pressing point contacts a pressing object, and pressure is applied to the pressing object; and after the torque is stopped being applied to the screw, if the lead angles of the screw and the screw sleeve are smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained, and if the lead angles of the screw and the screw sleeve are larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained by using a brake device.

The invention relates to a second mechanical device for realizing 'mechanical locking under the state of releasing pressure point pressure application, linear ascending, forward rotation, reverse rotation, linear descending, pressing down and mechanical locking to keep the state of pressure point pressure application', which comprises a second base, a screw rod, a screw sleeve retainer ring, a screw sleeve guide platform, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the second base, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the lead angles of the screw rod and the screw sleeve are less than or equal to the comprehensive self-locking angle and a manual mode is required, a manual wheel is fixedly arranged at one end of the screw rod and coaxially with the screw rod, if the lead angles of the screw rod and the screw sleeve are, A brake device for braking the screw rod or the threaded sleeve in a braking state; wherein, the pressure point is about screw rod axial auto-lock when the lead angle of screw rod, swivel nut is less than or equal to comprehensive auto-lock angle, has a set of spigot surface on the base two: the screw sleeve is provided with a screw sleeve guide platform which is an independent part fixedly connected with the screw sleeve or is a screw sleeve characteristic generated in the screw sleeve, the second base, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide platform form a motion relation by three motion pairs, wherein the first base is a rotating pair connected between the second base and the screw rod, and the second base is a screw pair connected between the screw rod and the screw sleeve, the third is connected in the friction pair between spigot surface and swivel nut direction platform, and the screw rod passes through the revolute pair to be installed on base two, and the screw rod passes through spiral cooperation installation with the swivel nut, and the swivel nut direction platform passes through the friction pair and contacts with the spigot surface, and the swivel nut retaining ring is fixed on the screw rod, and pressure point connecting rod fixed mounting is on the swivel nut, and the pressure point is independent spare part or the part of the whole spare part of processing out with pressure point connecting rod an organic whole on the pressure point connecting rod of fixed mounting.

When positive torque is applied to the screw (the positive torque is larger than the torque required by the pressure release point about the axial self-locking state of the screw or the brake state is released), the screw pushes the screw sleeve to ascend along the straight guide surface I, when the screw sleeve ascends to the top end of the straight guide surface I, the restriction is released, the screw sleeve rotates forwards and ascends simultaneously, because the length of the second rotary guide surface relative to the axial direction of the screw is determined according to parameters such as a thread lead angle, the total mass and the comprehensive moment of inertia of the screw sleeve and parts fixedly connected with the screw sleeve and the like, the second rotary guide surface increases the rotating speed of the screw sleeve in the reverse rotating and descending process, therefore, under the condition that the screw sleeve rotates forwards and the rotating speed of the screw sleeve is increased without a rotating guide surface, before the screw sleeve guide table reaches the second rotating guide surface, the screw sleeve must firstly contact the screw sleeve retainer ring and is integrated with the screw rod, and the screw sleeve and the screw rod rotate forwards together under the action of the torque transmitted to the screw rod and the comprehensive rotating kinetic energy equivalent to the screw rod until the screw sleeve guide table reaches the upper end of the second rotating guide surface and stops; when reverse torque is applied to the screw, the rotation component force of the screw rod, generated by the screw rod, to the screw sleeve, around the axis of the screw rod is in the same direction as the rotation component force of the screw sleeve, generated by the screw rod, to the two pairs of screw sleeves on the rotary guide surfaces, so that the rotation force of the screw sleeve is formed, the axial component force of the screw rod, generated by the screw rod, to the screw sleeve overcomes the axial component force of the screw rod, generated by the two pairs of screw sleeves on the rotary guide surfaces, so that the axial force of the screw sleeve is formed, the screw sleeve rotates and descends along the second rotary guide surface in the reverse direction under the combined action of the rotation force and the axial force, and after the second rotary guide surface is separated from the second rotary guide surface; and after the torque is stopped being applied to the screw, if the lead angles of the screw and the screw sleeve are smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained, and if the lead angles of the screw and the screw sleeve are larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained by using a brake device.

The invention relates to a mechanical device III for realizing 'mechanical locking under the state of releasing pressure point pressure application, straight line rising, forward rotation, reverse rotation, straight line descending, downward pressing and mechanical locking to keep the state of pressure point pressure application', which comprises a base III, a screw rod, a screw sleeve retainer ring, a screw sleeve revolving frame, a screw sleeve, a torsion spring, a spring plunger, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the base III, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the thread lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive auto-lock angle and a manual mode is required, a manual wheel is fixedly arranged at one end of the screw rod coaxially with the screw rod, if, a brake device which is fixed on the third base and brakes the screw rod or the threaded sleeve in a braking state is added; when the lead angle of the screw and the thread sleeve is less than or equal to the comprehensive self-locking angle, the pressure point is self-locked in the axial direction of the screw, 4 kinematic pairs form a kinematic relationship among the third base, the screw, the thread sleeve and the thread sleeve revolving frame, the first one is a revolute pair connected between the third base and the screw, the second one is a revolute pair connected between the screw and the thread sleeve, the third one is a revolute pair connected between the thread sleeve and the thread sleeve revolving frame, and the fourth one is a revolute pair connected between the screw and the thread sleeve revolving frame; the screw rod is installed on the third base through a revolute pair, the screw rod and the screw sleeve are installed through spiral fit, the screw sleeve check ring is fixed on the screw rod, the screw sleeve revolving frame is installed on the screw rod through the revolute pair, the screw sleeve revolving frame is connected with the screw sleeve through a sliding pair, the torsion spring and the screw rod are installed in coaxial fit, one end of the torsion spring is fixed on the third base, the other end of the torsion spring is fixed with the screw sleeve revolving frame, the spring plunger is fixedly installed on the third base, the pressure point connecting rod is fixedly installed on the screw sleeve, and the pressure point is an independent part fixedly installed on the pressure point connecting rod or a part of an integral part integrally processed with the.

Applying a torque opposite to the torque of the torsion spring on the screw (the torque is larger than the torque required by the pressure release point about the axial self-locking state of the screw or the brake release state), enabling the screw sleeve to ascend by taking the screw sleeve revolving frame at the balance position as a guide, integrating the screw sleeve and the screw rod when contacting a screw sleeve retainer ring, overcoming the torque of the torsion spring by the driving torque on the screw rod to enable the screw sleeve to rotate to the position in the forward direction and stopping applying the driving torque on the screw rod, and then restraining the rotation of the screw sleeve by the spring plunger to overcome the torque of the torsion spring and keep the position; when reverse torque is applied to the screw, the threaded sleeve descends a small distance along the axial direction of the screw, the threaded sleeve is separated from the rotation restriction of the spring plunger, under the combined action of the same-direction torque of the screw and the torsion spring, the threaded sleeve revolving frame and the threaded sleeve reversely rotate to a balance position, the threaded sleeve descends by taking the threaded sleeve revolving frame as a guide until a pressure point contacts a pressure application object, and pressure is applied to the pressure application object; and after the torque is stopped being applied to the screw, if the lead angles of the screw and the screw sleeve are smaller than or equal to the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained, and if the lead angles of the screw and the screw sleeve are larger than the comprehensive self-locking angle, the pressure of the pressure point on the pressure application object is maintained by using a brake device.

The invention relates to a mechanical device for realizing 'mechanical locking under the pressure point pressing state is released-rotation rising-rotation falling-pressing and mechanical locking to keep the pressure point pressing state', which comprises a base IV, a worm wheel shaft, a pressure point connecting rod and a power machine, wherein the power machine is fixedly installed with the base IV, the worm is driven by the power machine, and if a manual mode is needed, a manual wheel is coaxially and fixedly installed at the non-power machine end of the worm and the worm; the thread lead angles of the worm and the worm wheel are smaller than or equal to an equivalent friction angle, two kinematic pairs form a kinematic relationship among the base IV, the worm wheel and the worm wheel shaft, the first kinematic pair is a revolute pair connected between the base IV and the worm wheel shaft, and the second kinematic pair is a worm wheel pair connected between the worm and the worm wheel; the worm wheel shaft is installed on the fourth base through a revolute pair, the worm and the worm wheel are installed in a matched mode through the worm wheel pair, the worm wheel and the pressure point connecting rod are fixedly installed on the worm wheel shaft, and the pressure point is an independent part fixedly installed on the pressure point connecting rod or a part of an integral part integrally processed with the pressure point connecting rod.

Applying a positive torque which is larger than the torque required for releasing the self-locking state of the worm and the worm wheel on the worm, driving the worm wheel to rotate positively and driving the pressure point connecting rod and the pressure point to rotate and ascend, when applying a negative torque, driving the worm wheel to rotate reversely and driving the pressure point connecting rod and the pressure point to rotate and descend, and applying pressure to a pressure-applying object until the pressure point contacts the pressure-applying object; because the thread lead angle of the worm and the worm wheel is less than or equal to the equivalent friction angle, after the torque is stopped being applied to the worm, the pressure of the pressure point on the pressing object is maintained.

Advantageous effects

The special function of the mechanical device applied to the equipment can be realized without using a rotary table and a brake device, so that the mechanical device and the equipment are simplified, the process of relieving pressure, avoiding, pressing down and keeping pressure by the pressure point is quicker, the dynamic response performance of the pressure point is improved, the fault links caused by the rotary table and the brake device can be eliminated, the reliability of the equipment is improved, the cost of the equipment is reduced, and the equipment is lighter; the mechanical device in the equipment can realize the function of the corresponding mechanical device according to the signals of the sensor or the image recognizer to avoid turned pages, and the pressing points of the mechanical device can still press the pages on a mechanical structure for placing books under the unpowered condition.

Drawings

FIG. 1 is a logic diagram of an apparatus for implementing page pressing and barrier-free page turning according to the present invention;

FIG. 2 is a logic diagram of a device for implementing page pressing and barrier-free page turning according to the present invention;

FIG. 3 is a schematic logic diagram of an apparatus for implementing page pressing and barrier-free page turning according to the present invention;

FIG. 4 is a logic diagram of the apparatus for implementing page pressing and barrier-free page turning of the present invention;

FIG. 5 is a schematic logic diagram of an apparatus for implementing page pressing and barrier-free page turning according to the present invention;

FIG. 6 is a six-schematic logic diagram of an apparatus for implementing page pressing and barrier-free page turning in accordance with the present invention;

FIG. 7 is a logic diagram of the apparatus for implementing page pressing and barrier-free page turning according to the present invention.

FIG. 8 is a schematic structural diagram of a first mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-straight ascending-forward rotation-reverse rotation-straight descending-pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

FIG. 9 is a schematic structural diagram of a first mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-straight ascending-forward rotation-reverse rotation-straight descending-pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

FIG. 10 is a schematic structural diagram of a second mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-linear ascending-forward rotation-reverse rotation-linear descending-downward pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

FIG. 11 is a schematic structural diagram of a second mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-linear ascending-forward rotation-reverse rotation-linear descending-downward pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

FIG. 12 is a schematic structural diagram of a third mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-straight ascending-forward rotation-reverse rotation-straight descending-pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

FIG. 13 is a schematic structural diagram of a third mechanical device having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-straight ascending-forward rotation-reverse rotation-straight descending-pressing and mechanical locking to maintain the pressure applied state of the pressure point" according to the present invention;

fig. 14 is a structural view of a fourth mechanical device having the functions of "mechanically locking in a pressure applied state of pressure point released-rotationally lifting-rotationally lowering-pressing down and mechanically locking to maintain the pressure applied state of pressure point" according to the present invention;

FIG. 15 is a schematic structural diagram of a fourth mechanical device of the present invention having the functions of "releasing mechanical locking in a pressure applied state of a pressure point-rotating lifting-rotating lowering-pressing and mechanically locking to maintain the pressure applied state of the pressure point";

in the figure: 1-base I, 2-base II, 3-base III, 4-base IV, 5-straight guide surface I, 6-straight guide surface II, 7-transition surface, 8-rotary guide surface I, 9-rotary guide surface II, 10-screw rod, 11-screw sleeve, 12-screw sleeve guide table, 13-screw sleeve retainer ring, 14-screw sleeve revolving frame, 15-torsion spring, 16-spring plunger, 17-worm, 18-worm gear, 19-worm gear shaft, 20-pressure point connecting rod, 21-pressure point, 22-power machine, 23-driving wheel, 24-transmission mechanism, 25-driven wheel, 26-first sensor, 27-second sensor, 28-third sensor, 29-fourth sensor, 30-first device, 31-second device, 32-third device, 33-fourth device, 34-bottom plate, 35-back plate and 36-book.

Detailed Description

First, words, reference numerals, drawings, and terms used in the present application will be described below.

In the description and claims of this application, the words "comprise," "comprising," "include," "comprised of" … … and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense, that is, in a sense of "including but not limited to.

"upper" is an upward orientation in the axial direction, and "lower" is a downward orientation in the axial direction.

In the various drawings of the present application, like elements are represented by like or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

The first track groove: the device is positioned on the first base 1 and consists of a first straight guide surface 5, a second straight guide surface 6, a first rotary guide surface 8 and a second rotary guide surface 9, wherein the first straight guide surface 5 and the second rotary guide surface 9 as well as the second straight guide surface 6 and the first rotary guide surface 8 are in intersection transition; a second track groove: the second base 2 is provided with a first straight guide surface 5, a second straight guide surface 6, a transition surface 7 and a second rotary guide surface 9, and the first straight guide surface 5 and the second rotary guide surface 9 are in crossed transition; the first straight guide surface 5 and the second straight guide surface 6 in the first track groove and the second track groove are respectively parallel to the axis of the screw 10 or comprise the axis of the screw 10 after being extended; the thread insert 11 is provided with a thread insert guide table 12, the thread insert guide table 12 is an independent part fixedly connected with the thread insert 11 or is generated on the thread insert 11 characteristic of the thread insert 11, and a sliding or rolling friction pair can be used between the thread insert guide table 12 and the first track groove or the second track groove.

The pressure point 21 is a separate component fixedly mounted on the pressure point connecting rod 20.

The lead angles of the screw 10 and the thread insert 11 in examples 1 to 4 are equal to or less than the comprehensive self-locking angle and greater than the equivalent friction angle.

In the manual mode, the operation principle of the mechanism applied to the device is completely consistent with that in the semi-automatic mode, and a specific mechanism is not required to trigger logic and a pressure point action sequence, so the manual mode is not described in embodiments 1 to 5.

The following describes in detail four mechanical devices proposed by the present invention having functions of "mechanical lock in released pressure point pressing state-straight ascending-forward rotation-reverse rotation-straight descending-pressing and mechanical lock to maintain pressure point pressing state" or "mechanical lock in released pressure point pressing state-rotation ascending-rotation descending-pressing and mechanical lock to maintain pressure point pressing state", and one triggering logic for implementing page pressing and barrier-free page turning and the operation sequence of mechanical device pressure points, with reference to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, fig. 15 and the corresponding embodiments.

Example 1

As shown in fig. 2, the device for realizing page pressing and barrier-free page turning of the present invention employs 4 mechanical devices having functions of "releasing mechanical locking in a state of pressure point pressing-straight-up-forward rotation-reverse rotation-straight-down and mechanical locking to maintain the state of pressure point pressing"; the first device 30, the second device 31, the third device 32 and the fourth device 33 are all fixedly arranged on the bottom plate 34, and the book 36 is placed on the bottom plate 34 and the back plate 35; the first sensor 26, the second sensor 27, the third sensor 28 and the fourth sensor 29 are all arranged at positions which can be effectively triggered by a page turning hand, and a driver and a controller (not shown in the figure) are respectively connected with a power machine and sensors on the four devices; all four devices are normally kept in a state where the book 36 is pressed down.

As shown in fig. 1, device No. one 30 is identical to device No. two 31, and device No. three 32 is identical to device No. four 33; the first device 30 and the second device 31 rotate in the opposite direction to the third device 32 and the fourth device 33; the pressure point 21 of the first device 30 is called a first pressure point, the pressure point 21 of the second device 31 is called a second pressure point, the pressure point 21 of the third device 32 is called a third pressure point, and the pressure point 21 of the fourth device 33 is called a fourth pressure point, wherein the total number of the pressure points is four; the following describes in detail one triggering logic and pressure point action sequence of the paging and barrier-free paging device.

Fig. 1 shows that the four pressing points of the device of the present invention are all raised to the top and rotated 90 degrees according to the set rotation direction, so as to conveniently place the book 36 which is opened to read the pages.

As shown in fig. 2, after the book 36 is placed on the back plate 35, the four pressing points are pressed down on the pages of the book 36 to press the pages against the back plate 35, and at this time, the four devices are ready to cooperate with the page turning action of the page turning hand.

As shown in fig. 3, when a person faces a book, and turns the page from right to left, the page turning hand triggers the first signal state of the first sensor 26, the first pressure point on the first device 30 rises to the top and rotates 90 °, and the page is not pressed any more, so that the page turning action continues.

The turning hand then triggers the second signal state of sensor number one 26 during continued turning of the page, the pressing point number one on device number one 30, turning 90 ° around and down to book 36 exerting pressure on the pages, to the state shown in fig. 2. After the first pressure point action is completed, the second pressure point action on the second device 31 rises to the top and rotates 90 degrees, as shown in fig. 4; after the second pressing point action is completed, the third pressing point action on the third device 32 rises to the top and rotates 90 degrees, as shown in fig. 5, the second pressing point and the third pressing point can not press the page, so that the page turning hand and the page can turn over without obstacles.

During the continued turning of the page, the page turning hand then triggers the first signal state of sensor number three 28, and the second pressure point on device number two 31 acts to rotate 90 ° and drop to the book 36 to apply pressure to the pages, as shown in fig. 6, at which time the page turning hand is at the center line position of the book 36.

During the continuous page turning process, the page turning hand reaches the right side of the fourth device 33, the page turning hand triggers the first signal state of the fourth sensor 29, the third pressing point on the third device 32 acts, and the page turning hand rotates by 90 degrees and descends to the book 36 to exert pressure on the pages of the book, so that the state is changed into the state shown in fig. 2. After the third press point action is completed, the fourth press point action on the fourth device 33 rises to the top and rotates 90 degrees, and the page is not pressed any more, so that the page turning action is continued, as shown in fig. 7.

During the continuous page turning process, the page turning hand reaches the left side of the fourth device 33, the page turning hand triggers the second signal state of the fourth sensor 29, the fourth pressure point on the fourth device 33 acts, the page turning hand rotates by 90 degrees and descends to the book 36 to apply pressure on the pages, the state is changed into the state shown in fig. 2, and the page turning process is completed.

This page turning from right to left uses sensor number one 26, sensor number three 28 and sensor number four 29.

When pages are turned from left to right, the four mechanisms have a logic similar to that of turning pages from right to left, and the four sensor 29, the two sensor 27 and the one sensor 26 are used in the page turning process.

Each mechanical device of the page pressing and barrier-free page turning device makes corresponding lifting and rotating actions along with the actions of a page turning hand so as to avoid pages turned over by the book 36, the page turning actions are smooth and uninterrupted, any page on one side of the opened left and right pages is pressed on the back plate 35 by the pressing point 21 of at least one mechanical device at any moment in the page turning process, and the book 36 and the pages thereof can be kept stable during page turning and non-page turning.

Example 2

As shown in fig. 8 and 9, the first mechanical device for realizing "mechanical locking in a pressure point pressing releasing state, linear ascending, forward rotation, reverse rotation, linear descending, downward pressing and mechanical locking to maintain the pressure point pressing state" of the present invention comprises a first base 1, a screw rod 10, a screw sleeve 11, a screw sleeve guide table 12, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, wherein the power machine 22 is fixedly installed on the first base 1, the driving wheel 23 is fixedly installed on the power machine 22, the driven wheel 25 is fixedly installed on the screw rod 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; when the lead angle of the screw rod 10 and the thread sleeve 11 is smaller than or equal to the comprehensive self-locking angle, the pressure point 21 is self-locked relative to the axial direction of the screw rod 10; three kinematic pairs form a kinematic relationship among the first base 1, the screw rod 10, the screw sleeve 11 and the screw sleeve guide table 12, the first is a revolute pair connected between the first base 1 and the screw rod 10, the second is a screw pair connected between the screw rod 10 and the screw sleeve 11, and the third is a friction pair connected between the first base 1 and the screw sleeve guide table 12; the screw 10 is installed on the first base 1 through a revolute pair, the screw 10 and the threaded sleeve 11 are installed in a spiral fit mode, the threaded sleeve guide table 12 is in contact with one side of the first track groove of the first base 1 through a friction pair, and the pressure point connecting rod 20 is fixedly installed on the threaded sleeve 11.

Applying a positive torque on the screw 10, which is greater than the torque required by the pressure release point 21 in the axial self-locking state of the screw 10, the screw 10 pushes the screw sleeve 11 to ascend along the first straight guide surface 5 of the first track groove, when the screw rises to the top end of the first straight guide surface 5, the screw sleeve guide table 12 is in contact with the first rotary guide surface 8, the rotary component force of the screw 10 on the screw sleeve 11 around the axis of the screw 10 is in the same direction as the rotary component force of the screw 8 on the screw sleeve 11 around the axis of the screw 10 generated by the first rotary guide surface 8 to form the rotary force of the screw sleeve 11, the axial component force of the screw 10 generated by the screw 10 on the screw sleeve 11 overcomes the axial component force of the screw 10 generated by the first rotary guide surface 8 on the screw sleeve 11 to form the axial force of the screw sleeve 11, and under the combined action of the rotary force and the axial force, the screw sleeve 11 positively rotates and ascends along the first rotary guide surface 8 until the.

When reverse torque is applied to the screw 10, the movement principle of the screw is the same as that of the forward torque, the screw 10 pushes the screw sleeve 11 to rotate reversely and descend along the second rotary guide surface 9, and after the screw sleeve is separated from the second rotary guide surface 9 and contacts the second upper straight guide surface 6, the screw sleeve descends along the second straight guide surface 6 until the pressing point 21 contacts the book 36, and pressure is applied to the book 36; because the lead angle of the screw 10 and the thread sleeve 11 is less than or equal to the comprehensive self-locking angle, after the torque is stopped being applied to the screw 10, the pressure of the pressure point 21 on the book 36 is maintained.

Example 3

As shown in fig. 10 and 11, a second mechanical device for realizing "mechanical locking in a pressure point pressing releasing state, linear ascending, forward rotating, reverse rotating, linear descending, pressing down and mechanical locking to maintain the pressure point pressing state" of the present invention comprises a second base 2, a screw rod 10, a screw sleeve 11, a screw sleeve guide table 12, a screw sleeve retainer ring 13, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, wherein the power machine 22 is fixedly installed on the second base 2, the driving wheel 23 is fixedly installed on the power machine 22, the driven wheel 25 is fixedly installed on the screw rod 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; when the lead angle of the screw rod 10 and the thread sleeve 11 is smaller than or equal to the comprehensive self-locking angle, the pressure point 21 is self-locked relative to the axial direction of the screw rod 10; three kinematic pairs form a kinematic relationship among the second base 2, the screw rod 10, the screw sleeve 11 and the screw sleeve guide table 12, wherein the first kinematic pair is a revolute pair connected between the second base 2 and the screw rod 10, the second kinematic pair is a screw pair connected between the screw rod 10 and the screw sleeve 11, and the third kinematic pair is a friction pair connected between the second base 2 and the screw sleeve guide table 12; the screw 10 is installed on the second base 2 through a revolute pair, the screw 10 and the threaded sleeve 11 are installed in a spiral matching mode, the threaded sleeve guide table 12 is in contact with one side of the second track groove of the second base 2 through a friction pair, the threaded sleeve retainer ring 13 is fixed on the screw 10, and the pressure point connecting rod 20 is fixedly installed on the threaded sleeve 11.

Applying a positive torque on the screw 10, which is larger than the torque required by the pressure release point 21 in relation to the axial self-locking state of the screw 10, the screw 10 pushes the screw sleeve 11 to ascend along the first straight guide surface 5 of the second track groove, releasing the restriction when ascending to the top end of the first straight guide surface 5, the screw sleeve 11 simultaneously rotates forwards and ascends, because the length of the second rotary guide surface 9 in relation to the axial direction of the screw 10 is determined according to parameters such as the thread ascending angle, the total mass and the comprehensive moment of inertia of the screw sleeve 11 and parts fixedly connected with the screw sleeve 11, and the like, so that the second rotary guide surface 9 increases the rotating speed of the screw sleeve 11 in the reverse rotating and descending process, under the condition that the screw sleeve 11 rotates forwards and the rotating speed of the screw sleeve is not increased by the rotary guide surface, the screw sleeve 11 firstly contacts the screw sleeve retainer ring 13 and is integrated with the screw 10, the screw sleeve 11 and the screw 10 rotate forwards together under the action of the torque transmitted to the screw 10 and the comprehensive rotating kinetic energy equivalent to the screw, until the thread sleeve guide table 12 reaches the upper end of the second rotary guide surface 9.

When reverse torque is applied to the screw 10, a rotation component force generated by the screw 10 to the screw sleeve 11 and around the axis of the screw 10 is in the same direction as a rotation component force generated by the second rotary guide surface 9 to the screw sleeve 11 and around the axis of the screw 10 to form a rotation force of the screw sleeve 11, an axial component force of the screw 10 generated by the screw 10 to the screw sleeve 11 overcomes an axial component force of the screw 10 generated by the second rotary guide surface 9 to the screw sleeve 11 to form an axial force of the screw sleeve 11, and the screw sleeve 11 rotates and descends along the second rotary guide surface 9 in a reverse direction under the combined action of the rotation force and the axial force; when the book pressing point 21 is separated from the second rotary guide surface 9 and contacts the second upper straight guide surface 6, the book pressing point descends along the second straight guide surface 6 until the book 36 is contacted, and pressure is applied to the book 36; because the lead angle of the screw 10 and the thread sleeve 11 is less than or equal to the comprehensive self-locking angle, after the torque is stopped being applied to the screw 10, the pressure of the pressure point 21 on the book 36 is maintained.

Example 4

As shown in fig. 12 and 13, a third mechanical device for realizing "mechanical locking in a pressure point pressure applying state is released, linear ascending, forward rotation, reverse rotation, linear descending, pressing down and mechanical locking to maintain the pressure point pressure applying state" of the present invention comprises a base third 3, a screw rod 10, a screw sleeve 11, a screw sleeve retainer ring 13, a screw sleeve revolving rack 14, a torsion spring 15, a spring plunger 16, a pressure point connecting rod 20, a pressure point 21, a power machine 22, a driving wheel 23, a transmission mechanism 24 and a driven wheel 25, wherein the power machine 22 is fixed on the base third 3, the driving wheel 23 is fixedly installed on the power machine 22, the driven wheel 25 is fixedly installed on the screw rod 10, and the driving wheel 23 is connected with the driven wheel 25 through the transmission mechanism 24; when the lead angle of the screw rod 10 and the thread sleeve 11 is smaller than or equal to the comprehensive self-locking angle, the pressure point 21 is self-locked relative to the axial direction of the screw rod 10; the three bases 3, the screw rods 10, the thread sleeves 11 and the thread sleeve rotary frames 14 form a motion relation through four kinematic pairs, the first kinematic pair is a revolute pair connected between the three bases 3 and the screw rods 10, the second kinematic pair is a revolute pair connected between the screw rods 10 and the thread sleeves 11, the third kinematic pair is a revolute pair connected between the thread sleeves 11 and the thread sleeve rotary frames 14, and the fourth kinematic pair is a revolute pair connected between the screw rods 10 and the thread sleeve rotary frames 14; the screw 10 is installed on the third base 3 through a revolute pair, the screw 10 and the threaded sleeve 11 are installed in a spiral matching mode, the threaded sleeve retainer ring 13 is fixed on the screw 10, the threaded sleeve revolving frame 14 is installed on the screw 10 through the revolute pair, the threaded sleeve revolving frame 14 is connected with the threaded sleeve 11 through the revolute pair, the torsion spring 15 and the screw 10 are installed in a coaxial matching mode, one end of the torsion spring is fixed on the third base 3, the other end of the torsion spring is fixed with the threaded sleeve revolving frame 14, the threaded sleeve revolving frame 14 and the threaded sleeve 11 are in a balance position under a normal state, the spring plunger 16 is fixedly installed on the third base 3, and the pressure point connecting rod 20 is fixedly installed on the.

When a torque which is larger than the torque required for releasing the pressure point 21 in the axial self-locking state of the screw 10 and is opposite to the torque of the torsion spring 15 is applied to the screw 10, the screw 11 is lifted up by guiding the screw revolving rack 14 at the balanced position, when the screw 11 is contacted with the screw retaining ring 13, the screw 11 and the screw 10 are integrated, the driving torque on the screw 10 overcomes the torque generated by the torsion spring 15 to rotate the screw 11 to the positive position, at this time, the spring plunger 16 restrains the rotation of the screw 11, and when the driving torque is stopped being applied to the screw 10 and the torsion spring 15 generates the opposite torque to the screw 11, the screw 11 is kept at the fixed position.

When reverse torque is applied to the screw 10, the rotation of the screw sleeve 11 is restrained by the spring plunger 16, the screw sleeve 11 descends a small distance along the axial direction of the screw 10, the screw sleeve 11 is separated from the restraint of the rotation movement of the spring plunger 16, under the combined action of the screw 10 and the torsion spring 15, the screw sleeve revolving frame 14 and the screw sleeve 11 reversely rotate to a balance position, the screw sleeve 11 descends by taking the screw sleeve revolving frame 14 as a guide until the pressure point 21 contacts the book 36, and pressure is applied to the book 36; because the lead angle of the screw 10 and the thread sleeve 11 is less than or equal to the comprehensive self-locking angle, after the torque is stopped being applied to the screw 10, the pressure of the pressure point 21 on the book 36 is maintained.

Example 5

As shown in fig. 14 and 15, the mechanical device for realizing "mechanical locking in a pressure point pressing state is released, rotation is raised, rotation is lowered, pressing is performed and mechanical locking is performed to maintain the pressure point pressing state" of the present invention, the mechanical device comprises a base four 4, a worm 17, a worm wheel 18, a worm wheel shaft 19, a pressure point connecting rod 20, a pressure point 21 and a power machine 22, the power machine 22 is fixedly installed on the base four 4, and the worm 17 is driven by the power machine 22; the thread lead angles of the worm 17 and the worm wheel 18 are smaller than or equal to an equivalent friction angle, two kinematic pairs form a kinematic relationship among the base four 4, the worm 17, the worm wheel 18 and the worm wheel shaft 19, the first kinematic pair is a rotation pair connected between the base four 4 and the worm wheel shaft 19, and the second kinematic pair is a worm wheel pair connected between the worm 17 and the worm wheel 18; the worm wheel shaft 19 is arranged on the base four 4 through a revolute pair, the worm 17 and the worm wheel 18 are arranged in a matched mode through the worm wheel pair, and the worm wheel 18 and the pressure point connecting rod 20 are fixedly arranged on the worm wheel shaft 19.

When positive torque which is larger than torque required for releasing the self-locking state of the worm 17 and the worm wheel 18 is exerted on the worm 17, the worm 17 drives the worm wheel 18 to rotate positively and drives the pressure point connecting rod 20 and the pressure point 21 to rotate and rise; when reverse torque is applied to the worm 17, the worm 17 drives the worm wheel 18 to rotate reversely and drives the pressure point connecting rod 20 and the pressure point 21 to rotate and descend, and when the pressure point 21 contacts the book 36, pressure is applied to the book 36; since the lead angle of the worm 17 and the worm wheel 18 is equal to or less than the equivalent friction angle, the pressure of the pressure point 21 on the book 36 is maintained after the torque application to the worm 17 is stopped.

Industrial applicability

The single power machine of the invention realizes mechanical devices of mechanical locking under the pressure applying state of pressure point releasing, linear ascending, forward rotation, reverse rotation, linear descending, pressing down and mechanical locking to keep the pressure applying state of the pressure point, mechanical devices of mechanical locking under the pressure applying state of pressure point releasing, rotary ascending, rotary descending, pressing down and mechanical locking to keep the pressure applying state of the pressure point and page pressing and barrier-free page turning equipment applying the specific mechanical devices of the two types of mechanical devices, and has the following characteristics: (1) the structure is simple and compact, the number of parts is small, the manufacture and debugging are easy, and the modularization is easy to realize; (2) only one power machine is needed for one device, the number of driving and controlling objects is small, and the requirements on a driver and a controller are low; (3) the supporting devices required for realizing the mechanical function are few, the mechanical efficiency is high, and the time response is fast; (4) the high-speed and low-speed transmission mechanism is suitable for both low speed and high speed, can adopt a large-lead screw with higher transmission efficiency, can bear impact load, and has good rigidity and high stability; (5) the device is suitable for indoor and outdoor environments such as high and low temperature, high electromagnetism and the like, and does not need lubricating measures; (6) the reliability is high, and the manufacturing and running cost is low; (7) the page pressing and barrier-free page turning device enables people to completely liberate two hands at other times except for completing one page turning action by one hand in the page turning process when reading paper books.

Claims

1. The mechanical device applied by the equipment has the functions of releasing the mechanical locking under the pressure point pressing state, linearly ascending, positively rotating, reversely rotating, linearly descending, descending and mechanically locking to keep the pressure point pressing state or releasing the mechanical locking under the pressure point pressing state, rotationally ascending, rotationally descending, descending and mechanically locking to keep the pressure point pressing state, and is fixedly arranged on a mechanical structure for placing books; in a semi-automatic mode, a mechanical device applied by the equipment is controlled by a control device consisting of a sensor or an image recognizer, a driver and a controller, and presses pages on a mechanical structure for placing books in a reading state, and avoids turned pages or presses down and presses the pages according to a human limb signal detected by the sensor or a human limb signal and a page signal recognized by the image recognizer in a page turning state; if the mechanical device applied by the device is not provided with a brake device and needs a manual mode, the mechanical device applied by the device needs to be additionally provided with a manual wheel and avoids pages of the book or presses the pages of the book by rotating the manual wheel in a forward direction and a reverse direction.

2. The equipment of claim 1, wherein the mechanical device used in the equipment comprises a first base, a screw rod, a screw sleeve guide platform, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the first base, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive auto-lock angle and a manual mode is needed, a manual wheel is fixedly arranged on one end of the screw rod and the screw rod coaxially, and if the lead angle of the screw rod and the screw sleeve is greater than the comprehensive auto-lock angle, a brake device which is fixed on the first base and brakes the screw; the screw thread lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive self-locking angle, the pressure point is self-locked in the axial direction of the screw rod, and the first base is provided with a group of guide surfaces: the screw sleeve is provided with a screw sleeve guide platform which is an independent part fixedly connected with the screw sleeve or is a screw sleeve characteristic generated in the screw sleeve, the base I, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide platform form a motion relation by three motion pairs, wherein the first one is a rotating pair connected between the base I and the screw rod, the second one is a screw pair connected between the screw rod and the screw sleeve, the third is that connect the friction pair between spigot surface and swivel nut direction platform, and the screw rod passes through the revolute pair to be installed on base one, and the screw rod passes through spiral cooperation installation with the swivel nut, and the swivel nut direction platform passes through the friction pair and contacts with the spigot surface, and pressure point connecting rod fixed mounting is on the swivel nut, and the pressure point is the independent spare part of fixed mounting on the pressure point connecting rod or with the partial whole spare part that pressure point connecting rod integrated into one piece came out.

3. The equipment of claim 1, wherein the mechanical device used in the equipment comprises a second base, a screw rod, a screw sleeve retainer ring, a screw sleeve guide platform, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the second base, the driving wheel is fixedly installed on the power machine, the driven wheel is fixedly installed on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the lead angles of the screw rod and the screw sleeve are less than or equal to the comprehensive auto-lock angle and a manual mode is required, a manual wheel is fixedly installed on one end of the screw rod and the screw rod coaxially, and if the lead angles of the screw rod and the screw sleeve are greater than the comprehensive auto-lock angle, a brake device which is fixed on the second base and brakes; the screw thread lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive self-locking angle, the pressure point is self-locked in the axial direction of the screw rod, and the second base is provided with a group of guide surfaces: the screw sleeve is provided with a screw sleeve guide platform which is an independent part fixedly connected with the screw sleeve or is a screw sleeve characteristic generated in the screw sleeve, the second base, the guide surface, the screw rod, the screw sleeve and the screw sleeve guide platform form a motion relation by three motion pairs, wherein the first base is a rotating pair connected between the second base and the screw rod, and the second base is a screw pair connected between the screw rod and the screw sleeve, the third is connected in the friction pair between spigot surface and swivel nut direction platform, and the screw rod passes through the revolute pair to be installed on base two, and the screw rod passes through spiral cooperation installation with the swivel nut, and the swivel nut direction platform passes through the friction pair and contacts with the spigot surface, and the swivel nut retaining ring is fixed on the screw rod, and pressure point connecting rod fixed mounting is on the swivel nut, and the pressure point is independent spare part or the part of the whole spare part of processing out with pressure point connecting rod an organic whole on the pressure point connecting rod of fixed mounting.

4. The equipment of claim 1, wherein the mechanical device used in the equipment comprises a third base, a screw rod, a screw sleeve retainer ring, a screw sleeve revolving frame, a screw sleeve, a torsion spring, a spring plunger, a pressure point connecting rod, a power machine, a driving wheel, a transmission mechanism and a driven wheel, wherein the power machine is fixed on the third base, the driving wheel is fixedly arranged on the power machine, the driven wheel is fixedly arranged on the screw rod, the driving wheel is connected with the driven wheel through the transmission mechanism, if the lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive auto-lock angle and a manual mode is needed, a manual wheel is fixedly arranged at one end of the screw rod coaxially with the screw rod, and if the lead angle of the screw rod and the screw sleeve is greater than the comprehensive auto-lock angle, a brake device which is fixed on the third base; it is characterized in that when the lead angle of the screw rod and the screw sleeve is less than or equal to the comprehensive self-locking angle, the pressure point is self-locked along the axial direction of the screw rod, 4 kinematic pairs form a kinematic relationship among a third base, the screw rod, the screw sleeve and a screw sleeve revolving frame, the first is a revolute pair connected between the third base and the screw rod, the second is a revolute pair connected between the screw rod and the screw sleeve, the third is a revolute pair connected between the screw sleeve and the screw sleeve revolving frame, the fourth is a revolute pair connected between the screw rod and the screw sleeve revolving frame, the screw rod is arranged on the third base through the revolute pair, the screw rod and the screw sleeve are arranged in a screw matching way, a screw sleeve retainer ring is fixed on the screw rod, the screw sleeve revolving frame is arranged on the screw rod through the revolute pair, the screw sleeve revolving frame is connected with the screw sleeve through the revolute pair, a torsion spring is arranged in a, the spring plunger is fixedly mounted on the third base, the pressure point connecting rod is fixedly mounted on the screw sleeve, and the pressure point is an independent part fixedly mounted on the pressure point connecting rod or a part of an integral part integrally processed with the pressure point connecting rod.

5. The device of claim 1, wherein the mechanical device used in the device is composed of a base four, a worm wheel shaft, a pressure point connecting rod and a power machine, the power machine is fixedly installed on the base four, the worm is driven by the power machine, and if a manual mode is required, a manual wheel is fixedly installed on the non-power machine end of the worm and coaxially installed on the worm; the worm and worm wheel combined type pressure point connecting rod is characterized in that the lead angles of the threads of the worm and the worm wheel are smaller than or equal to an equivalent friction angle, a base four, the worm wheel and a worm wheel shaft form a motion relation through two kinematic pairs, the first is a revolute pair connected between the base four and the worm wheel shaft, the second is a worm wheel pair connected between the worm and the worm wheel, the worm wheel shaft is installed on the base four through the revolute pair, the worm and the worm wheel are installed in a matched mode through the worm wheel pair, the worm wheel and a pressure point connecting rod are both fixedly installed on the worm wheel shaft, and a pressure point is an independent part fixedly installed on the pressure point connecting rod or a part of an integral part integrally processed through the.