CN116517414A - Locking device capable of keeping door and window open angle - Google Patents

Locking device capable of keeping door and window open angle Download PDF

Info

Publication number
CN116517414A
CN116517414A CN202310331780.7A CN202310331780A CN116517414A CN 116517414 A CN116517414 A CN 116517414A CN 202310331780 A CN202310331780 A CN 202310331780A CN 116517414 A CN116517414 A CN 116517414A
Authority
CN
China
Prior art keywords
piece
rod
linkage rod
blocking
door
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310331780.7A
Other languages
Chinese (zh)
Inventor
卜喜花
卜红枚
解延福
凌永明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Zhu'an Electromechanical Equipment Co ltd
Original Assignee
Guangzhou Zhu'an Electromechanical Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Zhu'an Electromechanical Equipment Co ltd filed Critical Guangzhou Zhu'an Electromechanical Equipment Co ltd
Priority to CN202310331780.7A priority Critical patent/CN116517414A/en
Publication of CN116517414A publication Critical patent/CN116517414A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
    • E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
    • E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
    • E05C17/32—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of two or more pivoted rods
    • E05C17/34—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of two or more pivoted rods with means for holding in more than one position

Abstract

The invention discloses a locking device capable of keeping the opening angle of a door and a window, which comprises a first rod piece and a second rod piece which are connected with each other in a rotating way, wherein the first rod piece is provided with: linkage pole, screens structure includes: a limiting plate, a limiting column and a traction power source; the traction power source can traction the limiting plate to approach the linkage rod or release the limiting plate; the second rod piece is provided with: and the pushing piece can push the linkage rod to slide when the second rod piece rotates, and the pushing piece is provided with at least one locking position. The linkage rod is in transmission connection with the second rod piece through the pushing piece, when the second rod piece and the first rod piece reach a specific angle, the sensing piece sends out a signal to drive the traction power source to traction the limiting plate to approach the linkage rod, and the linkage rod is blocked from being far away from the second rod piece, so that the linkage rod is locked, the first rod piece and the second rod piece are relatively fixed, and the door frame and the door leaf are relatively fixed and maintain an open state at a certain angle.

Description

Locking device capable of keeping door and window open angle
Technical Field
The invention relates to the field of home decoration equipment, in particular to a locking device capable of keeping the opening angle of a door and a window.
Background
The door closer is a spring-like hydraulic device arranged on the door head, can be released after being compressed after being opened, automatically closes the door, has the function similar to that of a spring door, and can ensure that the door can be accurately and timely closed to an initial position after being opened.
The novel semi-automatic door closer comprises a door body fixing plate, wherein a gear fixing plate is arranged on the upper side of the door body fixing plate, a support column is arranged between the door body fixing plate and the gear fixing plate, a hydraulic door closer fixing plate is fixed on the upper side surface of the gear fixing plate, and a hydraulic door closer is fixed on the hydraulic door closer fixing plate; and a gear component matched with the hydraulic door closer is further arranged between the door body fixing plate and the gear fixing plate. The novel semi-automatic door closer takes the gear as a transmission part, does not need to be exposed outside, prolongs the service life of the door closer, and solves the problem that the service life of the door closer is seriously influenced by the fact that the connecting rod is directly exposed outside in a connecting rod transmission mode of the traditional door closer; the novel semi-automatic door closer is mainly applied to advertising doors and has the advantages of stable transmission, simple assembly, compact and reliable structure and long service life.
The common automatic door closer represented by the technical proposal has a structure which can only support the automatic closing of the opened door plate. However, when the door is used in daily life, the door is often required to be kept open for a long time, and then the door is restored to the use scene of automatic closing, such as the use scene that the door of a unit building is moved or decorated, and the goods are moved daily by a commercial building, etc., and the existing method is basically to block the door plate by using foreign objects such as brick stones. Existing door closers have difficulty meeting such a need.
Accordingly, there is a need for a device capable of maintaining the door open angle. Further, there is a need for a device that automatically locks when the door is opened to an angle, maintaining the door at an angle. Still further, there is a need for an angle locking device capable of automatically releasing the locked state of a door in the event of a fire.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a device capable of maintaining the door open angle. Further, there is a need for a device that automatically locks when the door is opened to an angle, maintaining the door at an angle. Still further, there is a need for an angle locking device capable of automatically releasing the locked state of a door in the event of a fire.
The technical scheme adopted for solving the technical problems is as follows:
a locking device capable of keeping the open angle of a door or window comprises a first rod piece and a second rod piece which are connected in a rotating way, wherein one of the free ends of the first rod piece and the free end of the second rod piece is connected with a door leaf, the other is connected with a door frame,
the first rod piece is provided with:
the linkage rod can slide along the first rod piece;
the screens structure, the screens structure includes: a limiting plate, a limiting column and a traction power source;
the limiting plate is arranged on the limiting column in a sliding manner and can be driven by a traction power source to approach the linkage rod from the side surface of the linkage rod, so that the linkage rod is prevented from being far away from the second rod piece; the traction power source can draw the limit plate to approach the linkage rod or release the limit plate;
the second rod piece is provided with:
and the pushing piece can push the linkage rod to slide when the second rod piece is rotated, and the pushing piece is provided with at least one locking position.
Through adopting above-mentioned scheme, the gangbar is connected through pushing away the piece transmission with the second member, when second member and first member reached specific angle, because traction power source pulls spacing plate is close the gangbar to the blocking gangbar is kept away from the second member, thereby will the gangbar locking, first member and gangbar relative position are fixed, and second member and gangbar relative position are fixed, thereby reach first member and second member relative fixation, and then door frame and door fan relative fixation and be certain angle and maintain open state.
As an improvement scheme, one side of the limiting plate facing the linkage rod is provided with a blocking block in a protruding mode, and the blocking block is provided with a blocking inclined plane facing the linkage rod; the blocking block can be driven by the traction power source to move to the moving path of the linkage rod, so that the linkage rod is blocked from moving in the direction away from the second rod piece.
Through adopting above-mentioned scheme, with the blocking force of gangbar through the block, again to spacing plate, finally transmit on the spacing post. Because the blocking block is provided with the blocking inclined plane facing the linkage rod, the linkage rod can press the blocking inclined plane when being far away from the second rod piece, the pressing force of the part can be divided into two parts of component force, the direction of the component force of the first part is parallel to the moving direction of the limiting column, and the component force is transmitted to the limiting column through the limiting plate and is born by the limiting column; the direction of the second part of component force is perpendicular to the moving direction of the limiting column, and the component force is transmitted to the traction power source through the limiting plate and is borne by the traction power source. Specifically, the component force of the first part is proportional to the resistance to the linkage rod, and the component force of the second part is related to the angle of the blocking inclined plane, and the closer the blocking inclined plane is to be perpendicular to the moving direction of the linkage rod, the smaller the component force of the second part is, so that the traction power source can be prevented from being far away from the linkage rod with small force by adjusting the angle of the blocking inclined plane.
As an improvement scheme, the first rod piece is also provided with a lever assembly, and the lever assembly comprises a lever rotating shaft and a first blocking piece rotatably arranged on the synergetic rotating shaft; the first blocking piece is provided with a blocking part which interacts with the linkage rod and a relay part which interacts with the limiting plate.
Specifically, at this time, the first rod piece is provided with a linkage slide rail for sliding the linkage rod, and the linkage slide rail is preferably provided with a shell, the interior of the shell is hollow, and the shell surrounds the linkage rod to form the linkage slide rail. And one end of the linkage rod, which is far away from the second rod piece, is also provided with a reset spring, the reset spring is abutted with a baffle plate, and the baffle plate is fixedly arranged on the first rod piece.
Through adopting above-mentioned scheme, first blocking piece rotates around the lever pivot, and one end and the interdynamic linkage pole of being responsible for blocking the linkage pole, the other end and the spacing plate linkage of separating the lever pivot are used for transmitting the resistance from traction power source.
As an improvement scheme, the vertical distance from the straight line of the interaction force of the blocking part and the linkage rod to the lever rotating shaft is a blocking force arm; the vertical distance from the straight line of the interaction force of the relay part and the limiting plate to the lever rotating shaft is a traction force arm; the blocking force arm is smaller than the traction force arm.
By adopting the scheme, as the force arm of the interaction force of the first blocking piece and the linkage rod is smaller than the force arm of the interaction force of the first blocking piece and the limiting plate, the force from the traction power source only needs smaller force, and the larger resistance required by blocking the linkage rod can be counteracted.
As an improvement scheme, a first protruding part is arranged on one side of the relay part of the first blocking piece, which faces the limiting plate; a second protruding part is arranged on one side of the limiting plate facing the first blocking piece;
the first protruding part and/or the second protruding part are/is provided with mutually matched force transmission inclined planes, and the first protruding part can push the second protruding part to drive the limiting plate to be far away from the linkage rod and the traction power source along the direction of the limiting column.
Through adopting above-mentioned scheme, with the blocking force of gangbar transmit to first protruding portion through first blocking piece, rethread second protruding portion transmits spacing plate, transmits to spacing post at last. Because the first protruding part and/or the second protruding part are provided with mutually matched force transmission inclined planes, the pressure applied by the first protruding part to the second protruding part can be divided into two parts of component force, the direction of the component force of the first part is parallel to the moving direction of the limiting column, and the component force is transmitted to the limiting column through the limiting plate and is borne by the limiting column; the direction of the second part of component force is perpendicular to the moving direction of the limiting column, and the component force is transmitted to the traction power source through the limiting plate and is borne by the traction power source. Specifically, the component force of the first part is in direct proportion to the thrust generated by the relay part of the first blocking piece, and the component force of the second part is related to the angle of the force transmission inclined plane, and the closer the force transmission inclined plane is to be perpendicular to the moving direction of the linkage rod, the smaller the component force of the second part is, so that the traction power source can be prevented from being far away from the linkage rod by only needing small force through adjusting the angle of the force transmission inclined plane.
As a further development, one side of the second protruding part faces the first protruding part, and the other side abuts against the limit post.
By adopting the scheme, the component force of the first part is directly transmitted to the limit column through the second protruding part without passing through the limit plate.
As an improvement scheme, a pressure-bearing spring is arranged between the linkage rod and the first blocking piece, one end of the pressure-bearing spring pushes against the linkage rod, and the other end of the pressure-bearing spring pushes against and is connected to the pressure-bearing part of the first blocking piece; the pressure-bearing part and the blocking part are respectively arranged at two sides of the lever rotating shaft.
By adopting the scheme, one part of resistance to the linkage rod is transmitted to the pressure-bearing part of the first blocking piece through the pressure-bearing spring, and the rest part of resistance to the linkage rod is transmitted to the blocking part of the first blocking piece; because the pressure-bearing part and the blocking part are respectively positioned at two sides of the lever rotating shaft, the torque generated by the force transmitted to the pressure-bearing part can resist a part of the torque generated by the force transmitted to the blocking part, and the part of the force is finally born by the lever rotating shaft. The part of the torque generated by the blocking part which is not blocked is transmitted to the limiting plate by the relay part, so that the relay part can achieve the aim of blocking the movement of the linkage rod with smaller force.
Or based on the lever rotation shaft, the first blocking member is subjected to three external forces which can cause the first blocking member to rotate around the lever rotation shaft, one of the external forces is the acting force of the linkage rod on the blocking part and is set as F 1 The moment arm is L 1 The method comprises the steps of carrying out a first treatment on the surface of the Secondly, the acting force of the linkage rod on the pressure-bearing part is F 2 The moment arm is L 2 The method comprises the steps of carrying out a first treatment on the surface of the Thirdly, the acting force of the butt joint force part of the limiting plate is F 3 The moment arm is L 3 . Due to F 1 Rotation direction around lever rotation axis and F 2 F (F) 3 In contrast, so that the first blocking member can block the link lever, it is required to be stationary around the lever rotation shaft. In this case, according to the principle of mechanics, F 1 *L 1 ＝F 2 *L 2 +F 3 *L 3 I.e. three force balances. Therefore, the acting force of the blocking part by the linkage rod is weakened by the acting force of the pressure bearing part by the linkage rod, and the limiting plate is only required to generate smaller acting force on the force bearing partCan withstand the force. In addition, L is preferable 1 <L 3 Thus due to the mechanical principle formula F 1 *L 1 ＝F 2 *L 2 +F 3 *L 3 I.e. F 1 *L 1 -F 2 *L 2 ＝F 3 *L 3 Therefore, the limiting plate butt joint force part can resist the action force of the larger linkage rod on the blocking part only by generating smaller action force.
As an improvement scheme, the screens structure, spacing post is relative the gangbar sets up perpendicularly, traction power source is the electro-magnet, spacing plate is ferromagnetic material.
Through adopting above-mentioned scheme, the electro-magnet that is the traction power source sets up in the direction that spacing plate is close the gangbar, attracts the spacing plate of ferromagnetic material after the circular telegram start to draw the gangbar with spacing plate. And finally, preventing the linkage rod from moving in the direction away from the second rod piece and locking the movement of the door plate.
As an improvement scheme, the first rod piece is also provided with a high-temperature self-unlocking mechanism, and the high-temperature self-unlocking mechanism comprises an emergency unlocking piece and a thermosensitive triggering piece;
the emergency unlocking piece is provided with a starting piece capable of being automatically released, and can send a signal to enable the traction power source to release the limiting plate after the starting piece is automatically released;
the thermosensitive trigger piece is blocked beside the starting piece of the emergency unlocking piece and can be unblocked when the temperature rises.
Specifically, the thermosensitive trigger piece is a signal emitter, a button and a pressing plate are arranged on the signal emitter, the pressing plate presses the button, and when the pressing plate is loosened to stop pressing the button, the signal emitter emits a signal to enable the traction power source to release the limiting plate. The heat-sensitive trigger piece is a fusible alloy, and the fusible alloy abuts against the pressing plate at ordinary times to prevent the pressing plate from loosening, and when the fire disaster is high in temperature, the fusible alloy is melted at high temperature to release the abutting and blocking of the pressing plate.
Through adopting above-mentioned scheme, when the conflagration takes place, the high temperature that the conflagration produced makes the thermosensitive trigger piece remove the blocking to the starter, and the starter is released by oneself and is accomplished, and urgent unblock piece send signal makes the traction power source remove/stop to the traction of spacing plate, finally makes the door plant force unblock to automatic door closing under the door closer drive.
As an improvement scheme, still include at least one on the first member can survey the locating sensing piece of gangbar, the sensing piece towards the gangbar side sets up to be equipped with the sensing plate that matches with the gangbar, the sensing plate can start the sensing piece and send the signal and start the traction power source and pull limiting plate is close the gangbar under the gangbar removes to the preset position condition.
By adopting the scheme, taking the traction power source as an electromagnet as an example, the electromagnet is powered off and not started at ordinary times, and the sensing piece is arranged to be in a state that the linkage rod pushes the sensing plate when the linkage rod moves to a state that the corresponding door plate is opened to a specific angle, and the sensing plate enables the sensing piece to send signals by pressing a start button or other modes of the sensing piece. And then the electromagnet is started to attract the limiting plate to prevent the linkage rod from moving, so that the door plate is locked and maintained in an opened specific angle state. That is, the arrangement of the induction piece can enable the electromagnet to be started only when the door plate is kept in a locking state, and the electromagnet is not started and consumes no power at ordinary times, so that electric power is saved.
As an improvement scheme, the pushing piece is a limiting wheel, the limiting wheel is fixedly connected with the second rod piece, and the side surface of the limiting wheel is in abutting fit with the linkage rod; the limiting wheel is provided with a rotation axis, and the limiting wheel drives the linkage rod to move through the change of the distance from the side surface of the limiting wheel to the rotation axis during rotation.
Specifically, the pushing piece is a limiting wheel, the limiting wheel is fixedly connected with the second rod piece, and the side surface of the limiting wheel is in abutting fit with the linkage rod; the limiting wheel is provided with a rotation axis, and the limiting wheel drives the linkage rod to change among a first position, a second position and a third position through the change of the distance from the side surface of the limiting wheel to the rotation axis during rotation.
Specifically, the limiting wheel is detachably connected with the second rod piece, and the automatic locking of how much angle the door is opened can be changed by adjusting the relative angle between the limiting wheel and the second rod piece.
The structure that the limiting wheel and the second rod piece are relatively detachable and fixed after the angle is adjusted can be used for arranging a bolt and a plurality of slots which are matched with each other on the mutual contact surface of the limiting wheel and the second rod piece, or arranging a ratchet wheel which is matched with each other on the mutual contact surface of the limiting wheel and the second rod piece.
Specifically, the side of the limiting wheel is divided into at least three types of areas according to the distance from the side to the rotation axis, and compared with the distance from the side to the rotation axis, the first area is the second area, the third area is the third area, and connecting areas with continuously changing distances from the three types of areas to the rotation axis are arranged between the three types of areas. The linkage rod keeps pressing the side edge of the limiting wheel against due to the action of a reset spring or other types of elastic pieces, wherein the linkage rod is positioned at a first position when the linkage rod abuts against the first area; when the linkage rod abuts against the second area, the linkage rod is located at the second position; when the linkage rod abuts against the third area, the linkage rod is located at the third position. Taking the simplest scheme as an example, the distribution of three types of areas on the side edge of the limiting wheel is as follows: the layout of the first region, the third region, the second region, the third region and the first region is the same region in the head and tail of the layout mode, wherein the third region, the second region and the third region are locked positions. The layout is a simpler and more reliable layout which can realize the effect that when the door is opened to a certain angle, the door is automatically locked and the door is kept unchanged when the door is opened to a certain angle. A simpler layout may be modified if desired: the first region-third region-second region-first region, wherein the third region-second region portion is a locking bit. The effect that this overall arrangement can realize is, just blockking the door leaf and closing to being less than this angle when the door opens to certain angle, but can enlarge the angle of opening the door at will, because the door leaf is generally limited by the outside wall body of door frame, the door leaf can't open the angle that is greater than 180 degrees, and the door leaf is limited at this moment and can only remove between specific angle and 180 degrees, also can realize the effect that the open angle of automatic maintenance door is greater than specific angle.
As an improvement scheme, the first rod piece and the second rod piece are respectively provided with a sensing piece and a positioning piece which are matched with each other; the sensing piece can sense the locating piece in a certain distance and send a signal to the traction power source to draw/release the limiting plate to approach the linkage rod.
Through adopting above-mentioned scheme, when setting up as sensor spare and setting element be when first member and second member rotate to enough be close even coincide, namely when closing the door the state, the sensor spare senses the setting element and sends the signal and make traction power source, namely electro-magnet stop working, because the angle of opening the door does not need to be locked at this moment, consequently need not extravagant electric power when closing the door maintain electro-magnet operating condition.
Compared with the prior art, the invention has the beneficial effects that:
the linkage rod is in transmission connection with the second rod piece through the pushing piece, when the second rod piece and the first rod piece reach a specific angle, the induction piece sends a signal to the traction power source, the traction power source is driven to draw the limiting plate to approach the linkage rod, the linkage rod is blocked from being far away from the second rod piece, the linkage rod is locked, the relative position of the first rod piece and the linkage rod is fixed, the relative position of the second rod piece and the linkage rod is fixed, and therefore the relative fixation of the first rod piece and the second rod piece is achieved, and then the door frame and the door fan are relatively fixed and maintain an open state at a certain angle.
Further, in the process of opening the door, when the linkage rod reaches the third position from the first position to the third position and then to the second position, the positioning device sends a signal to control the clamping mechanism to block the next movement of the linkage rod from the second position to the third position, and after the linkage rod reaches the second position, the linkage rod cannot reach the third position again due to the clamping mechanism, so that the linkage rod stops at the second position. The linkage rod is fixed relative to the first rod piece, the second rod piece is fixed relative to the first rod piece under the influence of the linkage rod, and the door plate and the door frame keep an open state at a certain angle, so that when the door is opened to a certain angle, the door is automatically locked, and the door is kept unchanged at a certain angle.
Further, when the door is opened to a certain angle, the door leaf is blocked from being closed to be lower than the angle, but the door opening angle can be arbitrarily enlarged, and because the door leaf is limited by a wall body outside the door frame in general, the door leaf cannot be opened by an angle larger than 180 degrees, and at the moment, the door leaf is limited to be capable of moving only between a specific angle and 180 degrees, and the effect of automatically maintaining the opening angle of the door to be larger than the specific angle can be achieved.
Further, the first blocking piece rotates around the lever rotating shaft, one end of the first blocking piece interacts with the linkage rod to block the linkage rod, and the other end of the first blocking piece is used for transmitting resistance from the traction power source in a linkage way with the limiting plate through the lever rotating shaft. Because the force arm of the interaction force of the first blocking piece and the linkage rod is smaller than that of the interaction force of the first blocking piece and the limiting plate, the force from the traction power source can counteract the larger resistance required by blocking the linkage rod with smaller force.
Further, the blocking force of the linkage rod is transmitted to the first protruding part through the first blocking piece, then transmitted to the limiting plate through the second protruding part, and finally transmitted to the limiting column. Because the first protruding part and/or the second protruding part are provided with mutually matched force transmission inclined planes, the pressure applied by the first protruding part to the second protruding part can be divided into two parts of component force, the direction of the component force of the first part is parallel to the moving direction of the limiting column, and the component force is transmitted to the limiting column through the limiting plate and is borne by the limiting column; the direction of the second part of component force is perpendicular to the moving direction of the limiting column, and the component force is transmitted to the traction power source through the limiting plate and is borne by the traction power source. Specifically, the component force of the first part is in direct proportion to the thrust generated by the relay part of the first blocking piece, and the component force of the second part is related to the angle of the force transmission inclined plane, and the closer the force transmission inclined plane is to be perpendicular to the moving direction of the linkage rod, the smaller the component force of the second part is, so that the traction power source can be prevented from being far away from the linkage rod by only needing small force through adjusting the angle of the force transmission inclined plane.
Further, a part of the resistance to the linkage rod is transmitted to the pressure-bearing portion of the first blocking member through the pressure-bearing spring, and the remaining part of the resistance to the linkage rod is transmitted to the blocking portion of the first blocking member; because the pressure-bearing part and the blocking part are respectively positioned at two sides of the lever rotating shaft, the torque generated by the force transmitted to the pressure-bearing part can resist a part of the torque generated by the force transmitted to the blocking part, and the part of the force is finally born by the lever rotating shaft. The part of the torque generated by the blocking part which is not blocked is transmitted to the limiting plate by the relay part, so that the relay part can achieve the aim of blocking the movement of the linkage rod with smaller force.
Further, when a fire disaster occurs, the high temperature generated by the fire disaster enables the thermosensitive trigger piece to release the blocking of the starting piece, the starting piece is automatically released to finish, the emergency unlocking piece sends a signal to enable the traction power source to release/stop traction on the limiting plate, finally the door plate is forcedly unlocked, and the door plate is automatically closed under the drive of the door closer. Therefore, the fire disaster occurs when the locking angle of the door leaf and the door frame is opened, the locking of the door leaf and the door frame is automatically released to facilitate the automatic door closing, and the fire disaster is prevented from spreading further.
Drawings
Fig. 1 is an overall schematic view of a locking device capable of maintaining an open angle of a door or window according to the present invention.
Fig. 2 is a schematic structural view of how the first rod, the second rod, the limiting wheel and the linkage rod of the locking device capable of maintaining the opening angle of the door and the window interact with each other.
Fig. 3 is a sectional view showing a related structure of a first blocking member of a locking device capable of maintaining an opening angle of a door or window according to the present invention.
Fig. 4 is a cross-sectional view showing the interaction of the first blocking member and the stopper plate member of the locking device capable of maintaining the opening angle of the door and window according to the present invention.
Fig. 5 is a cross-sectional view of the structure of the interaction of the display link and the sensing member of the locking device for maintaining the opening angle of the door and window according to the present invention.
Fig. 6 is a schematic diagram showing the construction principle of a second embodiment of a locking device capable of maintaining the opening angle of a door or window according to the present invention.
Fig. 7 is a schematic view showing the cooperation of the sensing member and the positioning member related structure of the locking device capable of maintaining the opening angle of the door and window according to the present invention.
Fig. 8 is a schematic diagram illustrating force arm analysis of a first blocking member of a locking device capable of maintaining an open angle of a door or window according to the present invention.
Wherein, 1: a first rod member; 2: a second rod member; 3: a linkage rod; 4: a limiting plate; 5: a limit column; 6: a traction power source; 7: a pushing member; 8: a blocking block; 9: a blocking slope; 10: a lever rotation shaft; 11: a first blocking member; 12: a blocking part; 13: a relay section; 14: a first protrusion; 15: a second protruding portion; 16: a force transfer inclined plane; 17: a pressure-bearing spring; 18: a pressure-bearing part; 19: an emergency unlocking member; 20: a heat-sensitive trigger; 21: a start-up member; 22: an induction plate; 23: a start button; 24: a first region; 25: a second region; 26: a third region; 27: an emergency unlock button; 28: an induction member; 29: a sensor member; 30: and a positioning piece.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and examples:
Embodiment case one: as shown in fig. 1 to 5, a locking device capable of maintaining the opening angle of a door or window comprises a first rod member 1 and a second rod member 2 which are rotatably connected with each other, wherein one of the free ends of the first rod member 1 and the second rod member 2 is connected with a door leaf, the other is connected with a door frame,
the first rod piece 1 is provided with:
a link lever 3, the link lever 3 being slidable along the first lever 1; the screens structure, the screens structure includes: a limiting plate 4, a limiting column 5 and a traction power source 6;
the limiting plate 4 is arranged on the limiting column 5 in a sliding manner and can be driven by the traction power source 6 to approach the linkage rod 3 from the side surface of the linkage rod 3 so as to prevent the linkage rod 3 from being far away from the second rod piece 2; the traction power source 6 can receive signals sent by the sensing piece and traction the limiting plate 4 to approach the linkage rod 3 or release the limiting plate 4 according to the signals;
the second rod 2 is provided with: the pushing piece 7 can push the linkage rod 3 to slide when the second rod piece 2 rotates, and the pushing piece 7 is provided with at least one locking position.
The linkage rod 3 is in transmission connection with the second rod 2 through the pushing part 7, when the second rod 2 and the first rod 1 reach a specific angle, the sensing part sends a signal to the traction power source 6, so that the traction power source 6 is driven to draw the limit plate 4 to approach the linkage rod 3, the linkage rod 3 is blocked from being far away from the second rod 2, the linkage rod 3 is locked, the relative position of the first rod 1 and the linkage rod 3 is fixed, the relative position of the second rod 2 and the linkage rod 3 is fixed, and therefore the relative fixation of the first rod 1 and the second rod 2 is achieved, and then the door frame and the door fan are relatively fixed and maintain an open state at a certain angle.
The first rod piece 1 is also provided with a lever assembly, and the lever assembly comprises a lever rotating shaft 10 and a first blocking piece 11 rotatably arranged on the cooperative rotating shaft; the first blocking piece 11 is provided with a blocking part 12 which interacts with the linkage rod 3 and a relay part 13 which interacts with the limiting plate 4; the force arm of the interaction force of the first blocking piece 11 and the linkage rod 3 is smaller than the force arm of the interaction force of the first blocking piece 11 and the limiting plate 4.
The first blocking member 11 rotates around the lever rotation shaft 10, and one end of the first blocking member interacts with the linkage rod 3 to block the linkage rod 3, and the other end of the first blocking member is linked with the limiting plate 4 through the lever rotation shaft 10 to transmit resistance from the traction power source 6. Because the force arm of the interaction force of the first blocking member 11 and the linkage rod 3 is smaller than the force arm of the interaction force of the first blocking member 11 and the limiting plate 4, the force from the traction power source 6 can counteract the larger resistance required for blocking the linkage rod 3 with only a small force.
The vertical distance from the straight line of the interaction force of the blocking part 12 and the linkage rod 3 to the lever rotating shaft 10 is a blocking force arm; the vertical distance from the straight line of the interaction force of the relay part 13 and the limiting plate 4 to the lever rotating shaft 10 is a traction force arm; the blocking force arm is smaller than the traction force arm.
The relay part 13 of the first blocking piece 11 faces the side of the limiting plate 4 and is provided with a first protruding part 14; the side of the limiting plate 4 facing the first blocking piece 11 is provided with a second protruding part 15;
the first protruding part 14 and/or the second protruding part 15 are provided with mutually matched force transmission inclined planes 16, and the first protruding part 14 can push the second protruding part 15 so as to drive the limiting plate 4 to be far away from the linkage rod 3 and the traction power source 6 along the direction of the limiting column 5.
The blocking force of the linkage rod 3 is transmitted to the first protruding part 14 through the first blocking part 11, then transmitted to the limiting plate 4 through the second protruding part 15, and finally transmitted to the limiting post 5. Because the first protruding part 14 and/or the second protruding part 15 are provided with the mutually matched force transmission inclined planes 16, the pressure applied by the first protruding part 14 to the second protruding part 15 can be divided into two parts of component force, the direction of the component force of the first part is parallel to the moving direction of the limit post 5, and the component force is transmitted to the limit post 5 through the limit plate 4 and is born by the limit post 5; the direction of the second part of component force is perpendicular to the moving direction of the limiting post 5, and is transmitted to the traction power source 6 through the limiting plate 4, and is borne by the traction power source 6. Specifically, the component force of the first part is proportional to the thrust force generated by the relay portion 13 of the first blocking member 11, and the component force of the second part is related to the angle of the force transmission inclined plane 16, and the closer the force transmission inclined plane 16 is to be perpendicular to the moving direction of the linkage rod 3, the smaller the component force of the second part is, so that the traction power source 6 can be prevented from being far away from the linkage rod 3 with only small force by adjusting the angle of the force transmission inclined plane 16.
The second protruding part 15 has one side facing the first protruding part 14 and the other side abutting against the limit post 5. The component force of the first portion is directly transmitted to the stopper post 5 via the second protrusion 15 without passing through the stopper plate 4.
A pressure-bearing spring 17 is arranged between the linkage rod 3 and the first blocking piece 11, one end of the pressure-bearing spring 17 pushes against the linkage rod 3, and the other end of the pressure-bearing spring pushes against and is connected to a pressure-bearing part 18 of the first blocking piece 11; the pressure-bearing portion 18 and the blocking portion 12 are respectively disposed on two sides of the lever rotation shaft 10.
A part of the resistance to the link lever 3 is transmitted to the pressure-receiving portion 18 of the first stopper 11 through the pressure-receiving spring 17, and the remaining part of the resistance to the link lever 3 is transmitted to the stopper portion 12 of the first stopper 11; since the pressure-receiving portion 18 and the blocking portion 12 are located at both sides of the lever rotation shaft 10, respectively, a part of the torque generated by the force transmitted to the pressure-receiving portion 18 can be resisted by the torque transmitted to the blocking portion 12, and the force of the part is finally borne by the lever rotation shaft 10. The part of the torque generated by the blocking part 12 which is not blocked is transmitted to the limiting plate 4 by the relay part 13, so that the relay part 13 can achieve the aim of blocking the movement of the linkage rod 3 with smaller force.
The clamping structure is characterized in that the limiting column 5 is vertically arranged relative to the linkage rod 3, the traction power source 6 is an electromagnet, and the limiting plate 4 is made of ferromagnetic materials.
The electromagnet serving as the traction power source 6 is arranged in the direction that the limiting plate 4 approaches the linkage rod 3, and attracts the limiting plate 4 made of ferromagnetic materials after being electrified and started, so that the limiting plate 4 is pulled to the linkage rod 3. And finally, the linkage rod 3 is prevented from moving away from the second rod piece 2, and the movement of the door plate is locked.
The first rod piece 1 is also provided with a high-temperature self-unlocking mechanism which comprises an emergency unlocking piece 19 and a thermosensitive trigger piece 20;
the emergency unlocking piece 19 is provided with a starting piece 21 capable of being automatically released, and can send a signal to enable the traction power source 6 to release the limiting plate 4 after the starting piece 21 is automatically released;
the thermally sensitive trigger 20 is blocked by the actuator 21 of the emergency release element 19 and can be released when the temperature rises.
Specifically, the thermosensitive trigger piece 20 is a signal emitter, a button and a pressing plate are arranged on the signal emitter, the pressing plate presses the button, and when the pressing plate is released to stop pressing the button, the signal emitter emits a signal to enable the traction power source 6 to release the limiting plate 4. The heat sensitive trigger 20 is a fusible alloy, and the fusible alloy is abutted against the pressing plate at ordinary times to prevent the pressing plate from loosening, and when the fire disaster is high in temperature, the fusible alloy is melted at high temperature to release the abutting and blocking of the pressing plate.
When a fire disaster occurs, the high temperature generated by the fire disaster enables the thermosensitive trigger piece 20 to release the blocking of the starting piece 21, the starting piece 21 is automatically released to finish, the emergency unlocking piece 19 sends a signal to enable the traction power source 6 to release/stop traction on the limiting plate 4, finally the door plate is forcedly unlocked, and the door plate is automatically closed under the drive of the door closer.
The sensing piece is arranged facing the side face of the linkage rod 3 and is provided with a sensing plate 22 matched with the linkage rod 3, and the sensing plate 22 can start the sensing piece and send a signal to start the traction power source 6 to draw the limiting plate 4 to be close to the linkage rod 3 when the linkage rod 3 moves to a preset position.
Taking the traction power source 6 as an electromagnet as an example, the electromagnet is powered off and not started at ordinary times, and the sensing piece is arranged such that when the linkage rod 3 moves to a state that the corresponding door plate is opened to a specific angle, the linkage rod 3 pushes the sensing plate 22, and the sensing plate 22 enables the sensing piece to send a signal by pressing a start button 23 or other modes of the sensing piece. Then the electromagnet is started to attract the limiting plate 4 to prevent the linkage rod 3 from moving, so that the door plate is locked and maintained in an opened specific angle state. That is, the arrangement of the induction piece can enable the electromagnet to be started only when the door plate is kept in a locking state, and the electromagnet is not started and consumes no power at ordinary times, so that electric power is saved.
The pushing piece 7 is a limiting wheel, the limiting wheel is fixedly connected with the second rod piece 2, and the side surface of the limiting wheel is in abutting fit with the linkage rod 3; the limiting wheel is provided with a rotation axis, and the limiting wheel drives the linkage rod 3 to move through the change of the distance from the side surface of the limiting wheel to the rotation axis during rotation.
Specifically, the pushing piece 7 is a limiting wheel, the limiting wheel is fixedly connected with the second rod piece 2, and the side surface of the limiting wheel is in abutting fit with the linkage rod 3; the limiting wheel is provided with a rotation axis, and the limiting wheel drives the linkage rod 3 to change among a first position, a second position and a third position through the change of the distance from the side surface of the limiting wheel to the rotation axis during rotation.
Specifically, the limiting wheel is detachably connected with the second rod piece 2, and the automatic locking of how much angle the door is opened can be changed by adjusting the relative angle between the limiting wheel and the second rod piece 2.
The structure that the limiting wheel and the second rod piece 2 are relatively detachable and locked and fixed after the angle is adjusted can be provided with a bolt and a plurality of slots which are matched with each other on the mutual contact surface of the limiting wheel and the second rod piece 2, or can be provided with a ratchet wheel which is matched with each other on the mutual contact surface of the limiting wheel and the second rod piece 2.
Specifically, the side of the limiting wheel is divided into at least three types of areas according to the distance from the side to the rotation axis, and compared with the distance from the side to the rotation axis, the first area 24 is smaller than the second area 25 is smaller than the third area 26, and the distance from the three types of areas to the rotation axis is continuously changed. The linkage rod 3 keeps pressing the side edge of the limiting wheel against the first area 24 under the action of a reset spring or other elastic piece, wherein the linkage rod 3 is positioned at the first position when the linkage rod 3 abuts against the first area 24; when the linkage rod 3 abuts against the second area 25, the linkage rod 3 is located at the second position; when the linkage rod 3 abuts against the third region 26, the linkage rod 3 is located at the third position. Taking the simplest scheme as an example, the distribution of three types of areas on the side edge of the limiting wheel is as follows: the layout of the first region 24-third region 26-second region 25-third region 26-first region 24, and the first region 24 at the head and tail in this layout mode is the same region. The layout is a simpler and more reliable layout which can realize the effect that when the door is opened to a certain angle, the door is automatically locked and the door is kept unchanged when the door is opened to a certain angle. A simpler layout may be modified if desired: first region 24-third region 26-second region 25-first region 24. The effect that this overall arrangement can realize is, just blockking the door leaf and closing to being less than this angle when the door opens to certain angle, but can enlarge the angle of opening the door at will, because the door leaf is generally limited by the outside wall body of door frame, the door leaf can't open the angle that is greater than 180 degrees, and the door leaf is limited at this moment and can only remove between specific angle and 180 degrees, also can realize the effect that the open angle of automatic maintenance door is greater than specific angle.
The interaction of the sensing member and the linkage rod 3 works as follows:
as shown in fig. 5, the linkage rod 3 can move up and down along the direction of the rod itself, the sensing member is arranged on the left side of the linkage rod 3, the right side of the sensing member is provided with a start button 23 and a sensing plate 22, the start button 23 is arranged in the middle of the right side, one end of the sensing plate 22 is connected to the upper end of the right side of the sensing member, and the other end of the sensing plate extends to the right lower side beyond the start button 23 and extends to the moving path of the linkage rod 3.
When the link lever 3 moves upward and leftward and does not contact the sensing plate 22, the start button 23 is not pressed, and the sensing member is in a state protruding from the right side of the sensing member, and does not send out a signal.
When the linkage rod 3 moves to the right and below, after contacting the sensing plate 22, the tail end of the right side of the sensing plate 22 is pressed, then the starting button 23 is pressed, the sensing piece sends a signal, and then the traction power source 6, namely the electromagnet, is driven to start, and the fixed limiting plate 4 is attracted to be tightly attached to the electromagnet.
The first blocking member 11 interacts with the linkage rod 3 according to the following working principle:
as shown in fig. 3, the link lever 3 is movable in the up-down direction, and the first blocking member 11 rotates about the lever rotation shaft 10. The blocking part 12 is positioned at the left side of the lever rotating shaft 10 and can move to the moving path of the linkage rod 3. The pressure-bearing part 18 is positioned on the straight line of the moving direction of the linkage rod 3 and positioned on the right side of the lever rotating shaft 10, and the pressure-bearing part 18 is connected with the linkage rod 3 through a pressure-bearing spring 17. The relay part 13 is positioned on the right side of the lever rotating shaft 10, and the distance from the bearing part 18 to the lever rotating shaft 10 is larger than the distance from the bearing part 18 to the lever rotating shaft 10 and the distance from the blocking part 12 to the lever rotating shaft 10.
Wherein the blocking part 12 moves away from the moving path of the linkage rod 3 after the first blocking piece 11 rotates anticlockwise, so that the linkage rod 3 can move up and down freely, and the locking state of the door plate is released; the blocking part 12 is located on the moving path of the link lever 3 after the first blocking member 11 rotates clockwise, and directly blocks the link lever 3.
The pressure-receiving portion 18 continuously receives the blocking force to the link lever 3 by the pressure-receiving spring 17.
The main resistance to the linkage rod 3 is borne by the blocking part 12, and the blocking part 12 forms a first moment on the first blocking piece 11 by taking the lever rotating shaft 10 as the rotating shaft center; a small part of resistance to the linkage rod 3 is borne by the bearing part 18, and the part of resistance forms a second moment on the first blocking piece 11 by taking the lever rotating shaft 10 as a rotating shaft center through the bearing part 18; the first moment is opposite to the second moment, and the first moment is larger than the second moment, so that the rest part of the first moment after the second moment is counteracted needs to be born by the relay 13. And the second moment counteracts this part of the resistance force, which is taken up by the lever shaft 10.
Specifically, the first blocking piece is used for carrying out stress analysis on the linkage rod, the limiting plate and the pressure-bearing spring respectively.
As shown in fig. 8, the first blocking member rotates around the lever rotation axis, and the rotation of the first blocking member can be regarded as a fulcrum along the O point in the drawing, and is affected by a first acting force F1 from the linkage rod, a second acting force F2 from the limiting plate member, and a third acting force F3 from the pressure-bearing spring, respectively.
According to stress analysis, the direction of the first acting force F1 is the lower left direction, acts on the blocking part of the first blocking piece, and a broken line straight line is formed along the lower left direction from the blocking part; from point O in the figure, a line segment is made perpendicular to and connecting the dashed line, and the length of the line segment is the moment arm L1 of F1.
According to stress analysis, the direction of the second acting force F2 is vertically downward and acts on the relay part of the first blocking piece, and a broken line straight line is formed along the vertical direction from the relay part; from point O in the figure, a line segment is made perpendicular to and connecting the dashed line, and the length of the line segment is the moment arm L2 of F2.
According to stress analysis, the direction of the third acting force F3 is vertically downward and acts on the pressure-bearing part of the first blocking piece, and a broken line straight line is formed along the vertical direction from the pressure-bearing part; from point O in the figure, a line segment is made perpendicular to and connecting the dashed line, and the length of the line segment is the moment arm L3 of F3.
According to the laws of physics, the first blocking member should be maintained stationary while it stops rotating and maintains the blocking linkage rod moving to the right. At this time, the O-point is taken as a rotation axis, and the first acting force F1 drives the first blocking member to rotate anticlockwise; the second acting force F2 and the third acting force F3 drive the first blocking piece to rotate clockwise; f1=f2×l2+f3×l3 should be present to maintain the force balance.
As shown in fig. 8, it is obvious that L3< L1< L2, in order to maintain the equation f1=l1=f2+l2+f3×l3, the linkage rod should overcome the F3 of the first blocking member by the pressure spring and then overcome the F2 of the first blocking member by the limiting plate.
And in addition, L1< L2, it can be inferred that the limiting plate can maintain the stress balance and complete the blocking of the linkage rod only by providing a pressure to the first blocking member, which is far smaller than the pressure provided by the linkage rod to the first blocking member.
The first blocking member 11 interacts with the limiting plate 4 according to the following principle:
as shown in fig. 3 and 4, the relay portion 13 of the first blocking member 11 is provided with a first protruding portion 14 protruding in a direction perpendicular to the own rotation plane; the limiting plate 4 is parallel to the first blocking piece 11, a second protruding portion 15 is arranged on one side facing the first blocking piece 11, and the limiting plate slides vertically relative to the linkage rod 3 through a limiting post 5 perpendicular to the linkage rod 3.
In the state of fig. 4, the first protrusion 14 of the first blocking member 11 moves upward and leftward by blocking the link 3, and presses the second protrusion 15. Because the second protruding part 15 faces the first protruding part 14 and is provided with a force transmission inclined plane 16, the acting force of the relay part 13 on the limiting plate 4 can be divided into two component forces in two directions, the component force direction of the first part is along the direction of the limiting column 5 above the left side of the second protruding part 15, and the component forces are borne by all the limiting columns 5 together; the component force direction of the second part is parallel to the direction of the limit post 5 and is in the left upper direction, and the component force of the second part is borne by the traction power source 6 for attracting the limit plate 4.
Alternatively, since the magnitude of the component force of the second portion is related to the inclination of the force transmission inclined plane 16, by adjusting the inclination, the traction power source 6 can cope with the component force of the second portion of the limiting plate 4 with very small traction force, so as to firmly attract the limiting plate 4, further stop the movement of the linkage rod 3 away from the second rod 2, and lock the opening angle of the door panel.
The emergency release member 19 and the thermal trigger 20 operate as follows:
as shown in fig. 3, an emergency unlocking member 19 is disposed below the first rod member 1, a button and a bent plate-shaped starting member 21 are disposed on the right side of the emergency unlocking member 19, the button can press the starting member 21 and drive the starting member to rotate anticlockwise under the condition of no external force interference, so that the pressing state of the button is released, and then the emergency unlocking member 19 sends a signal to stop traction of the traction power source 6, and finally the locking state of the door panel is released. At ordinary times, the right side of the starting piece 21 is provided with a fusible alloy blocking starting piece 21 serving as a thermosensitive trigger piece 20, so that the fusible alloy blocking starting piece cannot be pushed up by a button; in the event of a fire, the high temperature melts the fusible alloy and does not continue to prevent the rotation of the actuator 21, and the emergency release member 19 will signal.
Implementation case two:
As shown in fig. 6, the difference from the first embodiment is that the limiting plate does not pass through the first blocking member, but directly blocks the link lever by the blocking block 8. Specifically, a blocking block 8 is arranged on one side of the limiting plate 4 facing the linkage rod 3 in a protruding way, and a blocking inclined plane 9 facing the linkage rod 3 is arranged on the blocking block 8; the blocking block 8 can be driven by the traction power source 6 to move to the moving path of the linkage rod 3, so that the linkage rod 3 is blocked from moving away from the second rod piece 2.
Because the force arm type leverage without the first blocking piece and the lever rotating shaft assist in bearing a part of resistance, the resistance to the linkage rod is completely transmitted to the limit plate 4 through the blocking block 8 and then transmitted to the limit column 5, so that the strength requirements on the blocking block 8, the limit plate 4 and the limit column 5 are higher. In contrast, the reliability of this solution is greatly improved due to the simplicity of the parts and structure.
In addition, since the component force of the blocking rod in the direction of the limiting post on the limiting plate 4 is related to the angle of the blocking inclined plane 9 when the blocking block 8 is pushed by the linkage rod, the blocking section is preferably almost perpendicular to the movement direction of the linkage rod, so that the component force in the direction of the limiting post is smaller, and the electromagnet can maintain the attraction and fixation of the limiting plate 4 with smaller attraction force.
Preferably, in order to improve the overall reliability, a plurality of limit posts 5 can be arranged, in order to reduce the burden of the limit plate 4, one side of the blocking block 8 away from the linkage rod is preferably directly abutted against the limit posts 5, and the stress load of the limit plate 4 is reduced by directly transmitting the resistance force from the blocking block 8 to the limit posts 5.
In addition, the interaction principle of the sensing piece and the positioning piece is as follows:
as shown in fig. 7, the first rod member is provided with a positioning member at a position near the distal end on the right side, where the positioning member is a magnet. The second rod piece is provided with a sensing piece at a position close to the tail end below, and the sensing piece is a Hall sensor. The free end of the first rod piece is connected with the door plate, the free end of the second rod piece is connected with the door frame, when the door is closed, namely, the door plate is in a state of being overlapped with the door frame, the magnet on the first rod piece is positioned under the Hall sensor on the second rod piece, the distance is quite close, and the Hall sensor sends out a signal due to the quite close of the magnet, so that the traction power source, namely, the electromagnet stops working. The aim is that the door closing state does not need to maintain the function of angle locking, and unnecessary energy waste is avoided when the power is cut off.
In summary, after reading the present document, those skilled in the art may make various other corresponding transformation schemes according to the technical scheme and the technical concept of the present invention without creative mental effort, and different application scenarios all belong to the scope of the present invention.

Claims (10)

1. A locking device capable of keeping the opening angle of a door and a window, which can be matched with a door closer providing closing power to keep the door and the window open at a preset angle, comprising a first rod piece (1) and a second rod piece (2) which are connected with each other in a rotating way, wherein one of the free ends of the first rod piece (1) and the second rod piece (2) is connected with a door leaf, the other is connected with a door frame,
the first rod piece (1) is provided with:
a linkage rod (3), wherein the linkage rod (3) can slide along the first rod piece (1);
the screens structure, the screens structure includes: a limiting plate (4), a limiting column (5) and a traction power source (6);
the limiting plate (4) is arranged on the limiting column (5) in a sliding manner and can be driven by a traction power source (6), and the limiting plate approaches the linkage rod (3) from the side surface of the linkage rod (3) so as to prevent the linkage rod (3) from being far away from the second rod piece (2); the traction power source (6) can draw the limiting plate (4) to approach the linkage rod (3) or release the limiting plate (4);
The second rod piece (2) is provided with:
and the pushing piece (7) can push the linkage rod (3) to slide when the second rod piece (2) is rotated, and the pushing piece (7) is provided with at least one locking position.
2. Locking device capable of maintaining the opening angle of doors and windows according to claim 1, characterized in that the side of the limiting plate (4) facing the linkage rod (3) is provided with a blocking block (8) in a protruding way, the blocking block (8) is provided with a blocking inclined plane (9) facing the linkage rod (3); the blocking block (8) can move to the moving path of the linkage rod (3) under the drive of the traction power source (6), so that the linkage rod (3) is blocked from moving in the direction away from the second rod piece (2).
3. The locking device capable of maintaining the opening angle of the door and window according to claim 1, wherein the first rod (1) is further provided with a lever assembly, and the lever assembly comprises a lever rotating shaft (10) and a first blocking piece (11) rotatably arranged on the lever rotating shaft (10); the first blocking piece (11) is provided with a blocking part (12) which interacts with the linkage rod (3) and a relay part (13) which interacts with the limiting plate (4);
preferably, the blocking part (12) is provided with a blocking inclined surface inclined relative to the moving direction of the link lever (3).
4. A locking device capable of maintaining the opening angle of a door or window according to claim 3, wherein the vertical distance from the straight line of the interaction force of the blocking part (12) and the linkage rod (3) to the lever rotating shaft (10) is a blocking force arm; the vertical distance from the straight line of the interaction force of the relay part (13) and the limiting plate (4) to the lever rotating shaft (10) is a traction force arm; the blocking force arm is smaller than the traction force arm.
5. A locking device capable of maintaining the opening angle of a door or window according to claim 3, characterized in that the relay (13) of the first blocking element (11) is provided with a first projection (14) on the side facing the limiting plate (4); a second protruding part (15) is arranged on one side of the limiting plate (4) facing the first blocking piece (11);
the first protruding part (14) and/or the second protruding part (15) are/is provided with mutually matched force transmission inclined planes (16), and the first protruding part (14) can push the second protruding part (15) to further drive the limiting plate (4) to be far away from the linkage rod (3) and the traction power source (6) along the direction of the limiting column (5).
6. A locking device capable of maintaining the opening angle of a door or window according to claim 3, wherein a pressure-bearing spring (17) is arranged between the linkage rod (3) and the first blocking piece (11), one end of the pressure-bearing spring (17) pushes against the linkage rod (3), and the other end pushes against a pressure-bearing part (18) connected to the first blocking piece (11); the pressure-bearing part (18) and the blocking part (12) are respectively arranged at two sides of the lever rotating shaft (10).
7. The locking device capable of keeping the opening angle of the door and window according to claim 1, wherein the first rod piece (1) is further provided with a high-temperature self-unlocking mechanism, and the high-temperature self-unlocking mechanism comprises an emergency unlocking piece (19) and a thermosensitive trigger piece (20);
the emergency unlocking piece (19) is provided with a starting piece (21) capable of being automatically released, and can send a signal to enable the traction power source (6) to release the limiting plate (4) after the starting piece (21) is automatically released;
the heat-sensitive trigger (20) is blocked by an actuating element (21) of the emergency release element (19) and can be released when the temperature rises.
8. Locking device capable of maintaining the opening angle of doors and windows according to claim 1, characterized in that said first lever (1) further comprises at least one sensing element capable of detecting the position of said linkage rod (3), said sensing element being arranged facing the side of said linkage rod (3) and provided with a sensing plate (22) matching with the linkage rod (3), said sensing plate (22) being capable of activating the sensing element and transmitting a signal to activate the traction power source (6) to draw/release said limiting plate (4) close to the linkage rod (3) in case of the movement of the linkage rod (3) to a preset position.
9. The locking device capable of maintaining the opening angle of the door and window according to claim 1, wherein the pushing piece (7) is a limiting wheel, the limiting wheel is fixedly connected with the second rod piece (2), and the side surface of the limiting wheel is in abutting fit with the linkage rod (3); the limiting wheel is provided with a rotation axis, and the limiting wheel drives the linkage rod (3) to move through the change of the distance from the side surface of the limiting wheel to the rotation axis during rotation.
10. The locking device capable of maintaining the opening angle of the door and window according to claim 1, wherein the first rod piece and the second rod piece are respectively provided with a sensing piece and a positioning piece which are matched with each other; the sensing piece can sense the locating piece in a certain distance and send signals.
CN202310331780.7A 2023-03-30 2023-03-30 Locking device capable of keeping door and window open angle Pending CN116517414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310331780.7A CN116517414A (en) 2023-03-30 2023-03-30 Locking device capable of keeping door and window open angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310331780.7A CN116517414A (en) 2023-03-30 2023-03-30 Locking device capable of keeping door and window open angle

Publications (1)

Publication Number Publication Date
CN116517414A true CN116517414A (en) 2023-08-01

Family

ID=87389462

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310331780.7A Pending CN116517414A (en) 2023-03-30 2023-03-30 Locking device capable of keeping door and window open angle

Country Status (1)

Country Link
CN (1) CN116517414A (en)

Similar Documents

Publication Publication Date Title
US4135377A (en) Central locking equipment for vehicle doors
US6017067A (en) Latch device for a tailgate of a vehicle
US5340171A (en) Door latch control apparatus with independent actuators
JP3301700B2 (en) Relay mechanism for sliding doors for vehicles
JPH07119343A (en) Latch for door of car
US6386597B1 (en) Dual latch retraction system for exit bar
GB2143579A (en) Releasable hold-open device for a door closer
US2948560A (en) Latch mechanism
CZ20032274A3 (en) Mechanism for controlling a door lock handle and a door lock comprising such mechanism
US7503600B2 (en) Locking arrangement
WO1989002967A1 (en) Electrically controlled locks
CN116517414A (en) Locking device capable of keeping door and window open angle
US4111473A (en) Box opening device
US4803754A (en) Electromechanical door holder-closer
US7255203B2 (en) Clutch for coupling a car door of an elevator car with a landing door of an elevator system
SK394A3 (en) Electrical operator of the doors and windows
CN116575814A (en) Locking device capable of keeping door open angle
US6651386B2 (en) Emergency gate opening apparatus
JP2813989B2 (en) Operation mode switchable electric lock
ES2151762T3 (en) FAILURE OR FAILURE-LOCK FOR DOOR, WINDOW OR SIMILAR.
JPH0776974A (en) Automatic door opening and closing device for automobile
JPH11120887A (en) Door interlock device for switching device board
EP2077365A2 (en) Device for manual emergency release of automatic systems for the movement of doors, gates and the like
CN220267453U (en) Locking device capable of keeping door open angle
JPS6238671Y2 (en)

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination