WO2017206766A1

WO2017206766A1 - Mechanical position-limiting device, and mechanical position-limiting method

Info

Publication number: WO2017206766A1
Application number: PCT/CN2017/085557
Authority: WO
Inventors: 包卫明; 郭新明; 杨科亚
Original assignee: 上海施步新能源科技有限公司
Priority date: 2016-05-30
Filing date: 2017-05-23
Publication date: 2017-12-07
Also published as: CN107450655A; CN107450655B

Abstract

A mechanical position-limiting device, and mechanical position-limiting method. By providing a slip mechanism (40) having slipping direction controllability between an input shaft (10) and a transmission mechanism (30), providing an additional trigger mechanism (50) to trigger the slip mechanism (40) to slip toward different directions, and linking motion of the trigger mechanism (50) and an output shaft (20), the trigger mechanism (50) triggers, after the output shaft (20) outputs a predetermined quantity, the slip mechanism (40), such that the input shaft (10) slips with respect to the transmission mechanism (30), and the output shaft (20) stops rotation. The mechanical position-limiting device of the present invention has a purely mechanical design requiring no electronic elements such as sensors, and thus requires no power supply. In addition, by having a linked arrangement of the trigger mechanism and the output shaft, the present invention effectively utilizes self-rotation of the output shaft to drive the trigger mechanism to trigger the slip mechanism, thus realizing a position-limiting function; during the slipping, the output shaft stops rotating even if the input shaft continues to provide input in the same rotating direction, thus achieving a fuzzy input and a constant output.

Description

Mechanical limit device and mechanical limit method

Technical field

The invention relates to the field of mechanical structure design, in particular to a mechanical limit device and a mechanical limit method.

Background technique

After searching, most of the traditional limit devices use the following types of programs:

Chinese Patent Publication No. CN203580369U discloses a limit device for a cantilever movement stroke of an automatic stamping machine, the device comprising a motor mounted on a mechanical platform in a housing, the two ends of the output shaft of the motor being fixed on the platform by bearings The output shaft is provided with gears, the gears mesh with the racks, the rotation of the gears drives the racks to move up and down vertically, and a code disc is mounted on the top end of the output shaft to rotate with the output shaft, and the encoder disc is inserted in a fixed platform. In the slot of the slot photoelectric sensor, when the top end of the rack moves with the gear to the bottom of the stroke, the information of the encoder disc collected by the slot photoelectric sensor through the card slot will trigger the slot photoelectric sensor to send a signal to stop the rotation of the motor. And the movement to the reverse direction is realized, and the automatic control of the cantilever motion stroke of the automatic stamping machine is realized, and the precision is improved.

The Chinese patent publication CN201857848U discloses a limit device for a door opener, which mainly comprises an input gear and a screw connected to the base, and a collision block is arranged on the screw, and the collision block passes through the thread and the wire. The rod is matched, and the lower end of the collision block is arranged in the middle guide groove of the base, and a micro switch is arranged on each side of the screw rod, and the micro switch is arranged on the slider, and the screw hole is arranged on the slider, and is arranged on both sides of the screw rod. There is an adjusting screw, the slider is matched with the adjusting screw through the screw hole, and the lower end of the slider is arranged in the guiding groove on both sides of the base. The device adopts an adjustment micro switch to adapt to the needs of different door bodies and realize the limit function.

Chinese Patent Publication No. CN102865563B discloses a rotation limiting device and a lamp; the rotation limiting device comprises a base, a rotating shaft assembly and a driving member disposed on the base; a driving shaft of the driving member and the rotating shaft Component connection; the spindle assembly is in the drive The rotation of the movable member rotates synchronously with the driving shaft of the driving member; the rotation limiting device further includes a rotating drum and a micro switch disposed on the base; and the limited position lever is mounted on the rotating cylinder; The rotating shaft assembly is provided with a limiting member, and the limiting member drives the rotating cylinder to rotate, thereby driving the limiting lever to rotate around the rotating drum; the micro switch is electrically connected to the driving member; The limit lever can toggle the micro switch to open and close when rotating, thereby controlling the drive shaft of the drive member to rotate clockwise or counterclockwise. The above structure effectively serves to limit the rotation of the rotating shaft assembly by more than 360 degrees.

By reading the prior art including the above-mentioned previously disclosed patents, it is found that most of the current limiting devices control the input amount of the input terminal by means of sensors (such as a code disk, a photoelectric switch, a micro switch), and then achieve the limit, or The input quantity is directly controlled by the program, and the input quantity and the output quantity are required to be strictly related, and then the purpose of the limit is achieved.

The Applicant has found that the existing limit device is difficult to realize fuzzy input and quantitative output, and it is necessary to continuously provide power supply to realize limit trigger.

Summary of the invention

The object of the present invention is to propose a mechanical limit device and a mechanical limit method, which realize the purpose of the limit trigger, and the fuzzy input and the quantitative output without power supply.

In order to solve the above technical problems, the present invention provides a mechanical limiting device including an input shaft, an output shaft and a transmission mechanism, and the input shaft is connected to the output shaft through the transmission mechanism.

The mechanical limiting device further includes a sliding mechanism with a controllable sliding direction and a triggering mechanism for triggering the sliding mechanism to slide in different directions, the sliding mechanism being disposed between the input shaft and the transmission mechanism. The trigger mechanism is disposed in association with the output shaft, and after the output shaft outputs a predetermined amount, the trigger mechanism triggers the slip mechanism to cause slippage between the input shaft and the transmission mechanism.

The mechanical limit device of the invention is pure mechanical structure design, and no electronic component such as a sensor is needed, so no power supply is needed. The mechanical limit device of the invention adopts the concept that the trigger mechanism is associated with the output shaft, and effectively utilizes the output shaft. Rotation of itself to achieve triggering The mechanism triggers the slip mechanism to achieve the limit position. Even if the input shaft continues to follow the same steering input during the slip, the output shaft does not rotate, and the fuzzy input and the quantitative output are realized.

Preferably, the sliding mechanism comprises a sliding sleeve, a collar, an elastic plunging button and a triggering top block, wherein the middle portion of the input shaft is radially convexly formed with a mounting seat, and the mounting seat is along the axis of the input shaft And the elastic insertion key is inserted into the installation slot, the two ends of the elastic key can be axially extended and contracted, and the sliding sleeve is sleeved on the mounting seat. Two of the collars are fixedly butted at the two ends of the sliding sleeve, and the two triggering top blocks are sleeved on the input shaft, and an outer diameter of the inner end surface of the triggering top block facing the mounting seat is smaller than Or the inner diameter of the collar, the inner diameter of the collar is smaller than the inner diameter of the sleeve, and the triggering top block is correspondingly slidably inserted into the annular gap between the collar and the input shaft, and a bayonet for unidirectionally engaging the elastic plunging button is disposed on a side of each of the inner diameter of the collar adjacent to the mounting seat; the trigger mechanism has a connection for being associated with the output shaft And a portion for causing the triggering top block to push the elastic key to move relative to the collar Originator, the input shaft is connected with said sleeve through the transmission mechanism.

The present invention further provides a new sliding mechanism, which adopts a combination of two ends of a sliding sleeve, and slides and inserts a triggering top block in an annular gap between the collar and the input shaft. The elastic insertion key disposed on the input shaft mounting seat is implemented, and the two protruding ends of the elastic insertion key are controlled to be pushed into the bayonet of the two side collars by triggering the top block pushing, and the one-way clamping is performed. A one-way slip limit is achieved. When the predetermined output is reached, the output shaft associated trigger mechanism directly or indirectly pushes the trigger top block to slide axially along the input shaft, so that one end of the elastic key is disengaged from the bayonet of the collar, thereby achieving the first steering. Slippage, at this time, even if the input shaft exceeds the predetermined input amount and continuously inputs the same steering, the output shaft is no longer output until the input shaft is reversely input, the slip limit is released, and the elastic plucking card is fixed on the corresponding collar of the collar to drive the transmission. The mechanism rotates, which in turn drives the output shaft for output until the predetermined output is completed.

Preferably, the mounting seat is a cylindrical mounting seat, and the mounting slot is a strip-shaped groove penetrating along a circumferential side axis of the mounting seat, and the elastic inserting key comprises a first key, an intermediate pressure spring and a second key, the first key and the second key are butted by an intermediate compression spring, the elastic key is embedded in the mounting slot, and the first compression spring is One key An end portion of the intermediate compression spring and an end portion of the second key that is away from the intermediate compression spring extend out of the mounting slot to abut against the collar.

Preferably, the end faces of the two ends of the elastic pin are beveled, and the bayonet is a right-angled triangular groove formed on the side of the collar and the sliding sleeve, the bayonet The bottom surface is a beveled surface, and the end of the elastic key is inserted into the bayonet of the collar, and the inclined surface of the elastic key is matched with the beveled surface of the bayonet; When the bevel is rotated on one side, the elastic pin is subjected to axial thrust, the end of the elastic pin is retracted into the installation slot, and the sliding mechanism is slipped with the input shaft; the elastic pin is facing away from When one side of the inclined surface rotates, the elastic plunging button maintains the extended state, and generates a circumferential thrust to the bayonet to drive the collar to rotate, which in turn causes the sliding mechanism and the transmission mechanism to rotate along with the input shaft.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a worm gear structure, a spur gear transmission structure, a bevel gear transmission mechanism, a timing belt transmission structure or a chain transmission structure.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a worm gear structure, the trigger mechanism includes a forward trigger mechanism and a reverse trigger mechanism, and the forward trigger mechanism includes a first auxiliary shaft a first auxiliary driving gear, a first auxiliary driven gear, a first threaded sleeve, a first sliding block, a first guiding rail and a first rotating triggering member, wherein the reverse triggering mechanism comprises a second auxiliary rotating shaft and a second auxiliary driving a gear, a second auxiliary driven gear, a second screw sleeve, a second slider, a second rail, and a second rotation trigger.

The first auxiliary rotating shaft is disposed side by side on one side of the output shaft, the first auxiliary rotating shaft is parallel to the output shaft, and the first auxiliary driving gear is fixed on the output shaft, the first auxiliary a driven gear is fixed on the first auxiliary rotating shaft, the first auxiliary driving gear meshes with the first auxiliary driven gear, and the first auxiliary rotating shaft has a first for the first screw driving a threaded section, the first threaded sleeve is screwed on the first threaded section, a fixed end of the first sliding block is fixed on the first threaded sleeve, and a direction of the first guiding rail is arranged The first auxiliary rotating shaft has the same axial direction, the sliding end of the first sliding block is disposed in the first guiding rail, and the first rotating triggering member is disposed on one side of the first guiding rail, the first The rotation trigger has a first end for the first slider to push and a for pushing the touch a second end of the top block, the first screw sleeve driving the first slider to move in the first rail, and pushing the first rotation trigger member through the sliding end of the first slider One end, in turn, causes the second end of the first rotation trigger to push the trigger top block to trigger the slip mechanism.

The second auxiliary rotating shaft is arranged side by side on the other side of the output shaft, the second auxiliary rotating shaft is parallel to the output shaft, and the second auxiliary driving gear is fixed on the output shaft, the second An auxiliary driven gear is fixed on the second auxiliary rotating shaft, the second auxiliary driving gear is meshed with the second auxiliary driven gear, and the second auxiliary rotating shaft has a second driving end for the second screw a second threaded section, the second threaded sleeve is screwed on the second threaded section, the fixed end of the second sliding block is fixed on the second threaded sleeve, and the second guiding rail is arranged in a direction The second auxiliary rotating shaft has the same axial direction, the sliding end of the second sliding block is disposed in the second guide rail, and the second rotating triggering member is disposed on one side of the second guiding rail, the first The second rotation trigger has a first end for pushing the second slider and a second end for pushing the other trigger top block, and the second screw sleeve drives the second slide Moving the block in the second rail, pushing the second rotation through a sliding end of the second slider Send a first end member, such that in turn trigger the second rotating member to push the second end of the slip trigger trigger mechanism top block.

The invention further specifically proposes a mechanical limiting device applied to the worm gear structure, and realizes an effective limit of the forward rotation and the reverse rotation of the output shaft through a clever mechanical connection, and is particularly suitable for application in a photovoltaic bracket. The limit is turned.

Preferably, the triggering mechanism further includes a mounting panel, and the forward triggering mechanism and the reverse triggering mechanism are respectively hingedly disposed on a bottom surface of the mounting panel, and the mounting panel has two mutual openings Parallel straight strip-shaped through grooves are used as the first rail and the second rail.

Preferably, the first rotation triggering member comprises a latch, a rotating drum, a return spring, a first pushing plate serving as a first end of the first rotating triggering member, and a second end serving as the first rotating triggering member. a second push plate, the latch is fixed on the mounting panel, the first push plate is disposed at a lower portion of a circumferential side of the drum, and the second push plate is disposed at an upper portion of a circumferential side of the drum, The drum is rotatably sleeved on the plug.

In a natural state, the first push plate is disposed on a movement path of the first slider, and the second push plate faces an outer end surface of the trigger top block.

In the triggered state, the first slider abuts on the first push plate, the second push plate abuts on the outer end surface of the trigger top block, and applies an axis to the trigger top block To the thrust force, the one end portion of the elastic key is pushed inwardly by the trigger top block to disengage the bayonet of the collar.

The first push plate and the second push plate are driven to return to the natural state by the return spring during the switching of the trigger state to the natural state.

Preferably, the structure of the second rotation trigger is the same as that of the first rotation trigger, and the second rotation trigger is symmetrically arranged with the first rotation trigger, the first slider The direction of movement of the second slider is opposite.

Preferably, the first slider and the second slider are respectively provided with length adjustable devices, and the length of the first slider and the second slider are adjusted correspondingly by the length adjustable device. And adjusting the distance between the first rotation trigger and the second rotation trigger to adjust the output of the output shaft.

Preferably, the input shaft, the transmission mechanism and the output shaft are combined to form a spur gear transmission structure, the trigger mechanism includes a screw sleeve and a shifting fork, and the screw sleeve is screwed on the output shaft. The fork is fixedly disposed on the screw sleeve, the fork end of the fork is clamped on the input shaft, and the trigger mechanism moves along the axial direction to the triggering slip mechanism following the rotation of the output shaft.

The invention also provides a mechanical limit method, wherein the input shaft drives the output shaft to rotate through the transmission mechanism, and a slip mechanism with a controllable slip direction is arranged between the input shaft and the transmission mechanism, and the sliding mechanism is triggered by the added trigger mechanism. The mechanism slides in different directions and associates the trigger mechanism with the output shaft such that after the output shaft outputs a predetermined amount, the trigger mechanism triggers the slip mechanism such that the input shaft and the Slippage occurs between the transmission mechanisms, the output shaft stops rotating; after the input shaft changes the input rotation direction, the slip mechanism stops slipping, the transmission mechanism resumes normal transmission operation, and the output shaft rotates, and the output shaft outputs After the predetermined amount, the trigger mechanism triggers the slip mechanism again, so that The slip occurs between the input shaft and the transmission mechanism, and the output shaft stops rotating.

Preferably, the mechanical limit method is implemented on a mechanical stop device as described above.

Preferably, the specific limit process of the mechanical limit method of the present invention is as follows:

1. When the input shaft is changed to the first direction for input, the input shaft drives the output shaft to perform corresponding output through the transmission mechanism; at the same time, the trigger mechanism is associated with the output shaft through the output shaft. action;

2. When the output of the output shaft reaches a corresponding predetermined amount, the triggering mechanism just triggers the sliding mechanism, so that the transmission mechanism and the input shaft slip in the first direction. Said output shaft stops outputting;

3. When the input shaft is changed to the second direction for input, the input shaft drives the output shaft to perform corresponding output through the transmission mechanism; at the same time, the trigger mechanism is associated with the output shaft through the output shaft. Action, the slipping state of the slip mechanism in the first direction is released;

4. The trigger mechanism just triggers the slip mechanism until the output of the output shaft in the second direction reaches a predetermined amount in the second direction, such that the transmission mechanism and the input shaft are in the second direction. Slippage, at this time, the output shaft stops outputting.

Preferably, in step 1 and step 3, the output shaft is directly associated or indirectly associated with the trigger mechanism by an external operation object to perform a corresponding action.

In summary, the mechanical limit device and the mechanical limit method of the invention adopt novel design concept and original structural design, realize the purpose of the invention that the limit trigger can be realized without the power supply, and the fuzzy input and the quantitative output are realized. . The fuzzy input and the quantitative output mean that the amount of rotation of the output shaft is quantitatively controlled, and the input quantity does not need to be precisely controlled, and only a certain margin is needed to ensure that the output quantity is accurate and constant.

Wherein, the mechanical limit device and the mechanical limit method of the invention add a slip mechanism between the input shaft and the output shaft, and trigger the slip mechanism through the output shaft associated trigger mechanism to form a closed loop control system, and the whole process is completed by mechanical means, the structure Effective and reliable, it can be used continuously in harsh environments.

DRAWINGS

1 is a perspective view of a mechanical limit device of the first embodiment.

FIG. 2 is a schematic structural view of the first embodiment when the panel is not mounted.

3 is a schematic exploded view showing the structure of the input shaft portion of the first embodiment.

Fig. 4 is a full horizontal sectional view showing the worm portion of the first embodiment.

FIG. 5 is a schematic structural view of the collar and the elastic plucking end of the first embodiment.

6 is a perspective view of a mechanical limit device of the second embodiment.

Fig. 7 is a schematic exploded view showing the structure of the input shaft portion of the second embodiment.

8 is a perspective view of a mechanical limit device of another embodiment.

9 is a perspective view 2 of a mechanical limit device of another embodiment.

Fig. 10 is a perspective view 3 of a mechanical limit device of another embodiment.

The label in the figure shows:

Input shaft 10, mounting seat 11, mounting slot 12, output shaft 20, transmission mechanism 30, worm helical toothed sleeve 31, slip mechanism 40, sliding sleeve 41, collar 42, bayonet 421, resilient latch 43, first Insert key 431, second insert key 432, trigger top block 44, trigger mechanism 50, forward trigger mechanism 51, first auxiliary rotating shaft 511, first auxiliary driving gear 512, first auxiliary driven gear 513, first screw sleeve 514, a first slider 515, a first rail 516, a first rotation trigger 517, a pin 5171, a drum 5172, a first push plate 5173, a second push plate 5174, a reverse trigger mechanism 52, and a second auxiliary shaft 521 a second auxiliary driving gear 522, a second auxiliary driven gear 523, a second threaded sleeve 524, a second sliding block 525, a second guiding rail 526, a second rotating triggering member 527, a mounting panel 53, a screw sleeve 54, a shifting fork 55, auxiliary gear transmission mechanism 60, circular turntable 70, trigger lever 71, left trigger slider 72, right trigger slider 73.

detailed description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

Embodiment 1

As shown in FIG. 1 and FIG. 2, the embodiment provides a mechanical limiting device, including an input shaft 10, an output shaft 20, a transmission mechanism 30, a sliding mechanism 40 with a controllable sliding direction, and a triggering mechanism for triggering the sliding mechanism. The trigger mechanism 50 that slides in different directions, the input shaft 10, the transmission mechanism 30 and the output shaft 20 are combined to form a worm gear structure, and the input shaft 10 is connected to the output shaft 20 through the transmission mechanism 30.

As shown in FIG. 3, the slip mechanism 40 of the present embodiment is disposed between the input shaft 10 and the transmission mechanism 30, and the trigger mechanism 50 is disposed in association with the output shaft 20. After the output shaft 20 outputs a predetermined amount, the trigger mechanism 50 triggers the slip mechanism. 40, causing slippage between the input shaft 10 and the transmission mechanism 30.

Specifically, as shown in FIGS. 3 and 4, wherein FIG. 4 is a full cross-sectional view taken along the axial direction of the mounting slot. The sliding mechanism 40 of the embodiment includes a sliding sleeve 41, a collar 42, a resilient latch 43 and a triggering top block 44. The middle portion of the input shaft 10 is radially convexly formed with a mounting seat 11 along the input shaft 10. The mounting slot 12 is axially formed, and the elastic latch 43 is inserted into the mounting slot 12. The two ends of the elastic latch 43 can be axially extended and contracted, and the sliding sleeve 41 is slidably sleeved on the mounting seat 11 and the two snap rings. 42 is fixedly docked at both ends of the sliding sleeve 42, the two triggering top blocks 44 are slidably sleeved on the input shaft 10, and the outer diameter of the inner end surface of the triggering top block 44 facing the mounting seat 11 is less than or equal to the inner diameter of the collar 42, the collar The inner diameter of 42 is smaller than the inner diameter of the sliding sleeve 41, and a triggering top block 44 is correspondingly slidably inserted into the annular gap between a collar 42 and the input shaft 10 (as shown in FIG. 4), and the inner diameter of each collar 42 is A side of the mounting seat 11 is provided with a bayonet 421 for unidirectionally engaging the elastic insert 43. The trigger mechanism 50 has a connecting end for connecting with the output shaft 20 and a triggering end for causing the triggering top block 44 to push the elastic latching 43 to move relative to the collar 42. The input shaft 10 is coupled to the transmission mechanism 30 via the sliding sleeve 41. .

As shown in FIG. 3, the mounting seat 11 of the present embodiment is a cylindrical mounting seat. The mounting slot 12 is a strip-shaped recess extending through the circumferential side axis of the mounting base 11. The elastic latch 43 includes a first latch 431. An intermediate compression spring (not shown) and a second key 432, the first key 431 and the second key 432 are butted by the intermediate compression spring, and the elastic key 43 is embedded in the mounting slot 12, Under the action of the intermediate compression spring, the first key 431 is away from the one of the intermediate compression springs The end portions of the end portion and the second insert key 432 remote from the intermediate compression spring extend out of the mounting slot 12 and abut against the collars 42 on both sides.

For example, as shown in FIG. 5, the end faces of the two ends of the elastic insert 43 of the present embodiment are inclined surfaces, and the bayonet 421 is a right-angled triangular groove formed on the side of the collar 42 and the sliding sleeve 41. The bottom surface of the bayonet 421 is a beveled surface (that is, a plane in which the oblique side of the right triangle is located), and the end of the elastic latch 43 is inserted into the bayonet 421 of the collar 42 and the bevel of the end of the elastic latch 43 The beveled surface of the bayonet 421 is matched (the slope is equal or similar); when the elastic latch 43 is rotated toward the side of the bevel, the elastic latch 43 is axially thrusted, and the end of the elastic latch 43 is retracted to the mounting slot 12 The sliding mechanism 40 and the input shaft 10 are slipped; the elastic key 43 is rotated toward the side facing away from the inclined surface, and the elastic key 43 is extended (the right side edge of the bayonet is attached to the side of the elastic key), The circumferential thrust is generated on the bayonet 421 to drive the collar 42 to rotate, which in turn causes the slip mechanism 40 and the transmission mechanism 30 to rotate with the input shaft 10.

As shown in FIG. 3 to FIG. 5, the opposite ends of the elastic insertion key 43 are oppositely arranged, and the opposite sides of the two collars 42 are obliquely arranged, and are triggered by different directions of the trigger mechanism 50, and the corresponding elastic insertion The end of the key 43 and the bayonet 421 of the collar 42 play a corresponding role.

As shown in FIG. 3, the installation process of the input shaft 10 is performed by firstly arranging the elastic insert 43 in the mounting slot 12, and the inclined ends of the elastic insert 43 are arranged as shown in FIG. 41 sets are set on the mounting seat 11, and the elastic inserting keys 43 are restricted in the mounting slot 12, the two ends extend from the two ends to the mounting slot 12, and the worm helical toothed sleeve 31 is welded and fixed to the sliding sleeve 41. Finally, the two collars 42 are welded and fixed to the two ports of the sliding sleeve 41. To further facilitate the triggering of the triggering mechanism 50, a triggering top block 44 is further disposed on each end of the input shaft 10, and the triggering top block 44 is slidably inserted into a collar 42 near the inner end of the mounting base 11. In the annular gap with the input shaft 10, the triggering of the top block 44 away from the outer end of the mounting seat 11 is triggered by the trigger mechanism 50. At this time, the formed sliding mechanism 40 is defined on the outer side of the periphery of the mounting seat 11, and is rotatable relative to the mounting seat 11 in the circumferential direction, and the triggering of the top block 44 can be axially aligned with respect to the mounting seat 11 The displacement pushes the elastic key. Whether the slip mechanism 40 and the mount 11 slip on a certain steering mainly depends on the cooperation of the two ends of the elastic insert 43 with the bayonet 421 of the collar 42: the elastic insert 43 The end bevel is inserted into the bayonet 421 of the corresponding collar 42 and slips if the direction of rotation is turned in the direction of the bevel. Otherwise, the transmission mechanism 30 is driven to operate. By triggering the axial sliding of the top block 44, the elastic insert 43 can be effectively pushed out of the bayonet 421.

The elastic inserts 43 of the present embodiment are provided in a group, and each of the collars 42 is provided with two bayonet 421. In other specific embodiments, the number of the elastic plunging keys may be multiple groups, and the number of the bayonet ports provided on each ferrule may also be one or more, and the specific structure of the elastic plucking keys may also be other The form of the elastic member, the shape of the bayonet on the collar may also be a right-angled triangular groove, a right-angled trapezoidal groove or other wedge-shaped recessed shape capable of realizing elastic unidirectional clamping.

Specifically, the trigger mechanism 50 of the present embodiment includes a forward trigger mechanism 51 and a reverse trigger mechanism 52 as shown in FIG. 1 and FIG. 2, and the forward trigger mechanism 51 includes a first auxiliary rotating shaft 511 and a first auxiliary driving gear 512. The first auxiliary driven gear 513, the first threaded sleeve 514, the first sliding block 515, the first guiding rail 516 and the first rotation triggering member 517, the reverse triggering mechanism 52 includes a second auxiliary rotating shaft 521 and a second auxiliary driving gear 522. a second auxiliary driven gear 523, a second screw sleeve 524, a second slider 525, a second rail 526, and a second rotation trigger 527.

As shown in FIG. 2, the first auxiliary rotating shaft 511 is disposed side by side on one side of the output shaft 20, the first auxiliary rotating shaft 511 is parallel to the output shaft 20, and the first auxiliary driving gear 512 is fixed on the output shaft 20, first. The auxiliary driven gear 513 is fixed on the first auxiliary rotating shaft 511, and the first auxiliary driving gear 512 is meshed with the first auxiliary driven gear 513. The first auxiliary rotating shaft 511 has a first threaded section for driving the first threaded sleeve 514 ( The first threaded sleeve 514 is screwed onto the first threaded section, and the fixed end of the first slider 515 is fixed to the first threaded sleeve 514. As shown in FIG. 1 , the first guide rail 516 is disposed in the same direction as the first auxiliary shaft 511 , the sliding end of the first slider 515 is disposed in the first rail 516 , and the first rotation trigger 517 is disposed in the first direction. On one side of a guide rail 516, the first rotation triggering member 517 has a first end for pushing the first slider 515 and a second end for pushing the corresponding triggering top block 44. The first screw sleeve 514 drives The first slider 515 moves in the first rail 516, and pushes the first end of the first rotation trigger 517 through the sliding end of the first slider 515, and then causes the second end of the first rotation trigger 517 to push the corresponding trigger The top block 44 triggers the slip mechanism 40.

The forward trigger mechanism and the reverse trigger mechanism of this embodiment adopt the same structural configuration, and are arranged symmetrically with each other as shown in FIGS. 1 and 2.

The second auxiliary rotating shaft 521 of the present embodiment is arranged side by side on the other side of the output shaft 20, the second auxiliary rotating shaft 521 is parallel to the output shaft 20, the second auxiliary driving gear 522 is fixed on the output shaft 20, and the second auxiliary driven gear is fixed. 523 is fixed on the second auxiliary rotating shaft 521, the second auxiliary driving gear 522 is meshed with the second auxiliary driven gear 523, and the second auxiliary rotating shaft 521 has a second threaded portion for driving the second threaded sleeve 524 (not shown in the figure) The second screw sleeve 524 is screwed on the second threaded portion, and the fixed end of the second slider 525 is fixed on the second threaded sleeve 524. The second guide rail 526 is disposed in the direction of the second auxiliary rotating shaft 521. The axial direction is the same, the sliding end of the second slider 525 is disposed in the second rail 526, the second rotation triggering member 527 is disposed on one side of the second rail 526, and the second rotation triggering member 527 has a second for the second a first end of the slider 525 is pushed and a second end for pushing the other trigger top block 44. The second screw sleeve 524 drives the second slider 525 to move in the second rail 526 through the second slider 525. The sliding end pushes against the first end of the second rotation trigger 527, which in turn causes the second rotation trigger 527 The second end pushes the other trigger top block 44 to trigger the slip mechanism.

The triggering mechanism 50 of the present embodiment further includes a mounting panel 53 as shown in FIG. 1. The forward triggering mechanism 51 and the reverse triggering mechanism 52 are respectively hingedly disposed on the bottom surface of the mounting panel 53, and the mounting panel 53 is provided with two through holes. The straight strip-shaped through grooves parallel to each other serve as the first rail 516 and the second rail 526.

Of course, in other embodiments, the present invention may not provide a mounting panel, and the first rail and the second rail may limit the first slider and the second slider by separately configuring the guiding mechanism.

As shown in FIG. 2, the first rotation triggering member 517 of the present embodiment includes a latch 5171, a rotating drum 5172, a return spring (not shown), and a first push used as the first end of the first rotating trigger member. a plate 5173 and a second push plate 5174 serving as a second end of the first rotation trigger member, the pin 5171 is fixed on the mounting panel 53, the first push plate 5173 is disposed at a lower portion of the circumferential side of the drum 5172, and the second push plate 5174 The rotating plate 5172 is rotatably sleeved on the latch 5171, and the first push plate 5173 and the second push plate 5174 are all along the rotating drum 5172. The circumferential side of the circumference is arranged in a tangential direction, and the angle between the two is 85°-95°.

In the natural state, the first push plate 5173 is disposed on the moving path of the first slider 515, and the second push plate 5174 faces the outer end surface of the trigger top block 44 on the same side.

In the triggered state, the first slider 515 is abutted on the first push plate 5173, and the second push plate 5174 is abutted on the outer end surface of the trigger top block 44, and applies an axially inward thrust to the trigger top block 44. By pushing the top block 44, one end portion of the elastic plunging button 43 is inwardly contracted to disengage the bayonet 421 of the collar 42.

The first push plate 5173 and the second push plate 5174 are driven to return to the natural state by the return spring during the switching of the trigger state to the natural state.

Exemplarily, the return spring of the embodiment may be a torsion spring or a coil spring wound inside the drum, or may be a tension spring or the like whose one end is connected to the first push plate and the other end is connected to the outside, or Other reset mechanisms for driving the first push plate and the second push plate to return to the natural state.

The structure of the second rotation triggering member 527 of the present embodiment is the same as that of the first rotation triggering member 517, and the second rotation triggering member 527 is disposed symmetrically with the first rotation triggering member 517. The first slider 515 and the second sliding member are arranged. Block 525 moves in the opposite direction.

In other embodiments, the structure of the second rotation trigger of the present invention and the first rotation trigger may also be not exactly the same and symmetrically arranged, the first slider and the second slider The specific length design and the relative screw position can also be adjusted according to the actual situation, wherein the first slider and the second slider can also be respectively provided with a length adjustable device for adjusting the set length, which can be further Good settings for the preset output of different output axes are not mentioned here.

Of course, in addition to the specific associated arrangement of the output shaft and the trigger mechanism and the structure of the triggering the sliding mechanism described in the embodiment, the output shaft, the trigger mechanism and the sliding mechanism can also pass other direct or indirect The association setting structure, such as indirectly associating the trigger mechanism by an external operation object, to achieve corresponding triggering of the slip mechanism. 8 is a structural design of another indirect associated mechanical limiting device of the present invention. In conjunction with the structural form shown in FIG. 8, the operating object of the output shaft 20 is a circular turntable 70 that is operated by the output shaft 20. The circular turntable 70 performs a forward and reverse rotational motion, and when the circular turntable 70 is rotated to the set position, the circle The trigger lever 71 on the dial 70 will push the left trigger slider 72 or the right trigger slider 73 (ie, the trigger mechanism) to generate a corresponding push to the slip mechanism 40, thereby achieving an effective limit and facilitating the precise limit of the operating object. Bit control. Of course, in other embodiments, the operation object of the output shaft may also be in various other forms, such as a square flip plate, a columnar spin column, a rotary table or a rotating frame, etc., such solutions are all claimed in the present invention. Those skilled in the art can only obtain adaptive modifications according to the teachings of the present invention, and will not be described herein.

Embodiment 2

This embodiment also proposes another mechanical limiting device, which is mainly different from the first embodiment in the transmission structure and the triggering device.

As shown in FIG. 6, the input shaft 10, the transmission mechanism 30 and the output shaft 20 of the present embodiment are combined to form a spur gear transmission structure. The input shaft 10 and the output shaft 20 are arranged side by side in parallel, and the trigger mechanism 50 includes a screw sleeve 54 and a shift fork 55. The screw sleeve 54 is screwed on the output shaft 20, and the fork 55 is fixedly disposed on the screw sleeve 54. The fork end of the fork 55 is clamped on the input shaft 10, and the trigger mechanism 50 follows the output shaft 20 to rotate along the axial direction. Move to the triggering slip mechanism 40.

The triggering mechanism of the present embodiment is specifically divided into two groups. As shown in FIG. 6, each of the triggering mechanisms 50 includes a screw sleeve 54 and a shifting fork 55. The two sets of triggering mechanisms 50 are correspondingly disposed on both sides of the sliding mechanism 40, and output through the output. The association of the shaft 20 drives the two trigger mechanisms 50 to perform corresponding axial displacements to achieve slip trigger control. According to the actual needs, the thread segment setting on the output shaft 20 and the position of the screw sleeve are adjusted to realize the corresponding trigger limit function.

In this embodiment, the input shaft and the output shaft shown in FIG. 6 are arranged in parallel, and according to actual needs, the present invention can be adaptively modified into a cross-axis arrangement configuration in other embodiments, as shown in FIG. The mechanical limiting device of the shaft arrangement, the input shaft 10, the transmission mechanism 30 and the output shaft 20 are combined to form a staggered helical gear transmission mechanism, and the output shaft 20 is disposed above the input shaft 10, and is triggered by the associated screw on both ends of the output shaft 20. The mechanism 50 performs a slip trigger control on the slip mechanism 40 to implement a corresponding trigger limit function.

This embodiment is the same as the first embodiment or other similarities, and can directly refer to the description of the first embodiment. The description and the FIGS. 6 and 7 of the present embodiment show that the embodiment will not be described again. In other embodiments, the triggering mechanism of the present invention may also adopt a set of triggering mechanisms, by sliding the forks thereof on the other components such as the collar or the sliding sleeve or the sliding top block, and simultaneously from two directions. Trigger the slip mechanism. In addition, the trigger mechanism 50 of the present invention can be indirectly associated with the trigger mechanism movement through the auxiliary mechanism associated transmission, in addition to the manner directly associated with the output shaft as shown in the second embodiment, as shown in FIG. 10 in other embodiments. An auxiliary gear transmission mechanism 60 is provided, and the trigger mechanism 50 is screwed on the rotation shaft of the auxiliary gear transmission mechanism 60, and the slip mechanism 40 is triggered correspondingly by a fork 55 having a double fork end.

1 to 10 show several specific embodiments of the present invention, all of which are included in the scope of the present invention. Of course, the mechanical limiting device of the present invention, the input shaft, the transmission mechanism and the output shaft may be combined to form the worm gear structure according to the first embodiment or the spur gear transmission structure described in the second embodiment. Other transmission structures such as a bevel gear transmission mechanism, a timing belt transmission structure or a chain transmission structure may be combined and will not be described herein.

Embodiment 3

The embodiment provides a mechanical limit method, and a slip mechanism with a controllable slip direction is disposed between the input shaft and the transmission mechanism, and the sliding mechanism is triggered to slide in different directions by an added trigger mechanism, and the The trigger mechanism and the output shaft are operatively associated such that after the output shaft outputs a predetermined amount, the trigger mechanism triggers the slip mechanism to cause slippage between the input shaft and the transmission mechanism, the output The shaft stops rotating; after the input shaft changes the input rotation direction, the slip mechanism stops slipping, the transmission mechanism resumes the normal transmission operation, and the output shaft is driven to rotate. After the output shaft outputs a predetermined amount, the trigger mechanism is triggered again. The slip mechanism causes slippage between the input shaft and the transmission mechanism, and the output shaft stops rotating.

Illustratively, the mechanical limit method of the embodiment is implemented on the mechanical limit device in the first embodiment or the second embodiment. The specific limit process is as follows:

Step 1. When the input shaft is changed to the first direction for input, the input shaft drives the output shaft through the transmission mechanism to perform corresponding output; at the same time, the output shaft is directly associated or externally The operation object indirectly associates the trigger mechanism with the corresponding action Work.

Step 2: when the output of the output shaft reaches a corresponding predetermined amount, the triggering mechanism just triggers the sliding mechanism, so that the transmission mechanism and the input shaft slip in the first direction. The output shaft stops outputting.

Step 3: when the input shaft is changed to the second direction for input, the input shaft drives the output shaft to perform corresponding output through the transmission mechanism; at the same time, the output shaft is directly associated or externally The operation object indirectly associates the trigger mechanism with a corresponding action, and the slip state of the slip mechanism in the first direction is released.

Step 4, the trigger mechanism just triggers the slip mechanism until the output of the output shaft in the second direction reaches a predetermined amount in the second direction, so that the transmission mechanism and the input shaft are in the second direction The upper slides, at this time, the output shaft stops outputting.

Specifically, if the output shaft is required to perform a limit output of 40 turns per direction in the same direction. For convenience of description, taking the mechanical limiting device of the first embodiment as an example, the two collars 42 specifically include a left collar (the collar at the left position of FIG. 3) and a right collar (shown on the right side of FIG. 3) as shown in FIG. The position of the collar), the bayonet provided on the left collar is the left bayonet, the bayonet provided on the right collar is the right bayonet, and the two ends of the elastic latch 43 specifically include the left end (Fig. 3 elastic The left end of the key is inserted and the right end (the end of the right side of the elastic key of FIG. 3); the two trigger top blocks 44 are as shown in FIG. 3 and FIG. 4, specifically including the left trigger top block (FIG. 3, FIG. The trigger top block in the left position in 4) and the top trigger block in the right direction (trigger top block in the right position in Fig. 3 and Fig. 4). In the mechanical limit device with a transmission ratio of 20:1, the initial state shown in FIG. 5 is that the right end of the elastic key is engaged in the right bayonet, and the input shaft 10 is input 0- away from the slope of the right bayonet. In the process of 800 laps, the slip mechanism 40 does not slip, and the output shaft 20 outputs 0-40 laps. At the same time, the output shaft 20 is sequentially transmitted to the first slider 515 through the first auxiliary driving gear 512, the first auxiliary driven gear 513, the first auxiliary rotating shaft 511 and the first screw sleeve 514, so that the first slider 515 A linear motion is performed along the first guide rail 516. When the output shaft 20 outputs a predetermined amount, the first slider 515 just pushes the first push plate 5173 on the first rotation trigger member 517 to drive the second push plate 5174 to push the right trigger. The top block slides axially to the left to abut the right end of the elastic key, and axially moves to the right end of the elastic key 43 away from the right bayonet, and although the left collar abuts on the left end of the elastic key However, since the steering is rotated toward the left bevel and the left end in the direction of the mating slope, the locking and fixing cannot be formed, and therefore the slip mechanism starts to slip on the steering.

In the case of slipping, the input shaft 10 continues to input in the same direction and cannot be transmitted to the output shaft 20 until the input shaft 10 changes the input steering, and the elastic key is also followed by the reverse movement, and the left end of the elastic key 43 is Then the card is set in the left bayonet and pushes the left collar to rotate, and the recovery transmission mechanism 30 operates to drive the output shaft 20 to perform reverse output. Under the action of the output shaft 20, the forward trigger mechanism 51 is reset, and the reverse trigger mechanism 52 is gradually Close to the left collar, until the output shaft outputs a predetermined amount, the reverse trigger mechanism pushes the left trigger top block to move axially to the right until the left end of the elastic key is disengaged from the left latch (refer to the above forward output process for the specific triggering process) ), the slip mechanism begins to slip on the steering. After the steering is switched, the limit output can be performed again.

Of course, in the mechanical limiting device shown in FIG. 9 , the mechanical limiter of the embodiment may further indirectly associate the triggering mechanism with the external operating object by performing an action corresponding to the output mechanism in steps 1 and 3. .

The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

A mechanical limiting device includes an input shaft, an output shaft and a transmission mechanism, wherein the input shaft is connected to the output shaft through the transmission mechanism, wherein the mechanical limiting device further comprises a slipping controllable slipping direction a mechanism and a trigger mechanism for triggering the slip mechanism to slide in different directions, the slip mechanism is disposed between the input shaft and the transmission mechanism, and the trigger mechanism is disposed in association with the output shaft, and the output shaft is After outputting the predetermined amount, the trigger mechanism triggers the slip mechanism such that slippage occurs between the input shaft and the transmission mechanism.
The mechanical limiting device according to claim 1, wherein the sliding mechanism comprises a sliding sleeve, a collar, an elastic keying and a triggering top block, and a middle portion of the input shaft is radially convexly formed with a mounting seat. The mounting seat forms a mounting slot along the axial direction of the input shaft, the elastic inserting key is inserted into the mounting slot, and both ends of the elastic latching member are axially expandable and contractible. The sliding sleeve is sleeved on the mounting seat, and the two clamping rings are fixedly docked at the two ends of the sliding sleeve, and the two triggering top blocks are slidingly sleeved on the input shaft, and the triggering top is An inner diameter of the inner surface of the block facing the mounting seat is less than or equal to an inner diameter of the collar, an inner diameter of the collar is smaller than an inner diameter of the sliding sleeve, and a triggering top block is correspondingly slidably inserted into a collar and a ring-shaped gap between the input shafts, and a bayonet for unidirectionally locking the elastically inserted keys on a side of each of the inner diameters of the collars adjacent to the mounting seat; the trigger mechanism Having a connection end for associated connection with the output shaft and for causing the trigger top block to be pushed The triggering end of the elastic insert relative to the movement of the collar, the input shaft being coupled to the transmission mechanism through the sliding sleeve.
The mechanical limiting device according to claim 2, wherein the mounting seat is a cylindrical mounting seat, and the mounting slot is a strip-shaped recess penetrating along a circumferential side axis of the mounting seat, the elasticity The insertion key includes a first key, an intermediate pressure spring and a second key, the first key and the second key are butted by an intermediate compression spring, and the elastic key is embedded in the mounting slot, Under the action of the intermediate compression spring, the first pin is extended away from the one end of the intermediate compression spring and the end of the second pin that is away from the intermediate compression spring. Abutting on the collar.
The mechanical limiting device according to claim 2, wherein the end faces of the two ends of the elastic latch are inclined surfaces, and the bayonet is opened on the side of the collar adjacent to the sliding sleeve a right-angled triangular groove, the bottom surface of the bayonet is a beveled surface, and the end of the elastic key is inserted in the In the bayonet of the collar, the inclined surface of the elastic latch is in contact with the beveled surface of the bayonet; and the elastic latch is rotated toward the side of the bevel to receive the axial thrust, the elastic The end of the key is retracted into the mounting slot, the sliding mechanism is slipped with the input shaft; the elastic key is rotated toward the side facing away from the inclined surface, and the elastic key is kept extended, and The bayonet produces a circumferential thrust that causes the collar to rotate, which in turn causes the slip mechanism and transmission to rotate with the input shaft.
The mechanical limiting device according to any one of claims 2 to 4, wherein the input shaft, the transmission mechanism and the output shaft are combined to form a worm gear structure, a spur gear transmission structure, and a bevel gear transmission mechanism. , synchronous belt transmission structure or chain transmission structure.
The mechanical limiting device according to any one of claims 2 to 4, wherein the input shaft, the transmission mechanism and the output shaft are combined to form a worm gear structure, and the trigger mechanism comprises a forward trigger mechanism. And a reverse triggering mechanism, the forward triggering mechanism comprising a first auxiliary rotating shaft, a first auxiliary driving gear, a first auxiliary driven gear, a first threaded sleeve, a first sliding block, a first guiding rail and a first rotating trigger The reverse trigger mechanism includes a second auxiliary rotating shaft, a second auxiliary driving gear, a second auxiliary driven gear, a second screw sleeve, a second slider, a second rail, and a second rotation trigger; The auxiliary rotating shaft is disposed side by side on one side of the output shaft, the first auxiliary rotating shaft is parallel to the output shaft, the first auxiliary driving gear is fixed on the output shaft, and the first auxiliary driven gear is fixed On the first auxiliary rotating shaft, the first auxiliary driving gear meshes with the first auxiliary driven gear, and the first auxiliary rotating shaft has a first threaded section for driving the first screw sleeve, First screw set a fixing end of the first slider is fixed on the first threaded sleeve, and a first guiding direction of the first rail is the same as an axial direction of the first auxiliary rotating shaft, the first a sliding end of a slider is disposed in the first rail, the first rotation trigger is disposed on one side of the first rail, and the first rotation trigger has a first for the first a first end of the slider pushing and a second end for pushing the triggering top block, the first screw sleeve driving the first slider to move in the first rail, through the first sliding The sliding end of the block pushes against the first end of the first rotation triggering member, and then the second end of the first rotation triggering member pushes the triggering top block to trigger the sliding mechanism;

The second auxiliary rotating shaft is arranged side by side on the other side of the output shaft, and the second auxiliary rotating shaft is The output shaft is parallel, the second auxiliary driving gear is fixed on the output shaft, the second auxiliary driven gear is fixed on the second auxiliary rotating shaft, and the second auxiliary driving gear and the first a second auxiliary driven gear meshing, the second auxiliary rotating shaft has a second threaded section for the second threaded sleeve drive, the second threaded sleeve is screwed on the second threaded section, the second The fixed end of the slider is fixed on the second screw sleeve, the second rail is disposed in the same direction as the axial direction of the second auxiliary shaft, and the sliding end of the second slider is disposed in the first In the two guide rails, the second rotation triggering member is disposed at one side of the second rail, and the second rotation triggering member has a first end for the second slider to push and a Pushing a second end of the other triggering top block, the second screw sleeve driving the second slider to move in the second rail, and pushing the second through the sliding end of the second slider Rotating the first end of the trigger member, and then causing the second end of the second rotation trigger member to push the trigger top Slip trigger mechanism.
The mechanical limiting device according to claim 6, wherein the triggering mechanism further comprises a mounting panel, and the forward triggering mechanism and the reverse triggering mechanism are respectively hingedly disposed on a bottom surface of the mounting panel Two parallel strip-shaped through grooves parallel to each other are formed on the mounting panel as the first rail and the second rail.
A mechanical limiting device according to claim 7, wherein said first rotation trigger member comprises a latch, a drum, a return spring, a first push plate serving as a first end of said first rotation trigger member, and a second push plate serving as a second end of the first rotation trigger member, the pin is fixed on the mounting panel, the first push plate is disposed at a lower portion of a circumferential side of the drum, and the second push a plate is disposed on an upper portion of the circumferential side of the rotating drum, and the rotating sleeve is rotatably sleeved on the plug;

In a natural state, the first push plate is disposed on a movement path of the first slider, and the second push plate faces an outer end surface of the trigger top block;

In the triggered state, the first slider abuts on the first push plate, the second push plate abuts on the outer end surface of the trigger top block, and applies an axis to the trigger top block To the thrust, the one end of the elastic key is pushed inwardly by the triggering top block to disengage the bayonet of the collar;

The first push plate and the second push plate are driven to return to the natural state by the return spring during the switching of the trigger state to the natural state.
A mechanical limiting device according to claim 8 wherein: said second rotation trigger The structure is the same as the first rotation trigger, and the second rotation trigger is symmetrically arranged with the first rotation trigger, and the first slider and the second slider move in opposite directions.
The mechanical limiting device according to any one of claims 7-9, wherein the first slider and the second slider are respectively provided with length adjustable devices.
The mechanical limiting device according to any one of claims 1 to 4, wherein the input shaft, the transmission mechanism and the output shaft are combined to form a spur gear transmission structure, and the trigger mechanism comprises a screw sleeve and a shifting fork, the threaded sleeve is screwed on the output shaft, the shifting fork is fixedly disposed on the threaded sleeve, and the forked end of the shifting fork is clamped on the input shaft, the triggering mechanism Following the rotation of the output shaft, it moves axially to trigger the slip mechanism.
A mechanical limit method, wherein an input shaft drives an output shaft to rotate through a transmission mechanism, wherein: a sliding mechanism with a controllable slip direction is disposed between the input shaft and the transmission mechanism, and the sliding mechanism is triggered by an added trigger mechanism. The mechanism slides in different directions and associates the trigger mechanism with the output shaft such that after the output shaft outputs a predetermined amount, the trigger mechanism triggers the slip mechanism such that the input shaft and the Slippage occurs between the transmission mechanisms, the output shaft stops rotating; after the input shaft changes the input rotation direction, the slip mechanism stops slipping, the transmission mechanism resumes normal transmission operation, and the output shaft rotates, and the output shaft outputs After the predetermined amount, the trigger mechanism triggers the slip mechanism again, causing slippage between the input shaft and the transmission mechanism, and the output shaft stops rotating.
The mechanical limit method according to claim 12, wherein the mechanical limit method is implemented on the mechanical limit device according to any one of claims 1-11.
The mechanical limit method according to claim 13, wherein the specific limiting process is as follows:

1. When the input shaft is changed to the first direction for input, the input shaft drives the output shaft to perform corresponding output through the transmission mechanism; at the same time, the trigger mechanism is associated with the output shaft through the output shaft. action;

2. When the output of the output shaft reaches a corresponding predetermined amount, the triggering mechanism just triggers the sliding mechanism, so that the transmission mechanism and the input shaft slip in the first direction. Said output shaft stops outputting;

3. When the input shaft is changed to the second direction for input, the input shaft passes through the transmission The mechanism drives the output shaft to perform corresponding output; at the same time, the triggering mechanism is associated with the triggering mechanism to perform a corresponding action, and the slipping state of the sliding mechanism in the first direction is released;

4. The trigger mechanism just triggers the slip mechanism until the output of the output shaft in the second direction reaches a predetermined amount in the second direction, such that the transmission mechanism and the input shaft are in the second direction. Slippage, at this time, the output shaft stops outputting.
The mechanical limit method according to claim 14, wherein in the step 1 and the step 3, the output shaft is directly associated or indirectly associated with the trigger mechanism by an external operation object to perform a corresponding action.