CN110453994B

CN110453994B - Door and window positioning lock with positioning self-locking function

Info

Publication number: CN110453994B
Application number: CN201910798042.7A
Authority: CN
Inventors: 周凤兰
Original assignee: Donghai Changchun Door And Window Co ltd
Current assignee: Shanghai Yiwen Mechanical And Electrical Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-09-08
Anticipated expiration: 2039-08-27
Also published as: CN110453994A

Abstract

The invention relates to a door and window positioning lock with positioning and self-locking functions, which comprises a door and window frame fixedly arranged in a wall body, a door and window frame is arranged on the right end face of the door and window frame body, a partition board accommodating cavity is arranged in the door and window frame in a front-back penetrating manner, the partition board accommodating cavity is internally provided with a partition board which can partition the space at the front side and the rear side of the door and window frame, a rotary groove with a right opening and communicated with the holding cavity of the isolating plate is arranged in the door and window frame body, a bolt shaft is rotatably arranged between the upper inner wall and the lower inner wall of the rotary groove, wherein the left end of the isolation plate extends into the rotary groove and is fixedly connected with the bolt shaft, the invention aims to design a device which can control the opening size of a window according to personal desire of a user and can automatically stop when foreign matters exist in the window.

Description

Door and window positioning lock with positioning self-locking function

Technical Field

The invention relates to the technical field of door and window positioning locks, in particular to a door and window positioning lock with a positioning self-locking function.

Background

The door and window can be seen everywhere in daily life, the door and window not only can increase indoor light transmission, but also can ensure indoor ventilation at any time, and at present, an automatic ventilation door and window appears on the market, when in use, the automatic opening and closing can be realized under the manual control, but the ventilation windows also have larger leaks in the use process, for example, when the window is used, only two states of opening and closing are provided, the user can not control the opening size of the window by own intention, and the other point, when in use, when a user places hands or foreign matters on the windowsill, the ventilation window is forcibly closed under the driving of the motor to cause personal injury or personal injury to users, therefore, the door and window positioning lockset with the positioning self-locking function is needed to be designed, the opening size of the window can be controlled according to personal wishes of users, and the device can automatically stop when foreign matters exist in the window.

Disclosure of Invention

1. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a door and window location tool to lock with location self-locking function, is including the fixed door and window frame that sets up in the wall body, be provided with the door and window frame on the right side terminal surface of door and window frame, the division board that runs through around in the door and window frame holds the chamber, the division board holds the intracavity be provided with can with the division board of the space partition of door and window frame front and back side, be provided with the opening right in the door and window frame and just with the division board holds the turn trough that the chamber is linked together, rotatable being provided with bolt axle between the upper and lower side inner wall of turn trough, wherein, the left end of division board extends to let in the turn trough and with bolt axle fixed connection can drive when bolt axle rotates the division board rotates, and then passes through the division board holds the chamber will the space connection of door and window frame front and back side, the left side inner wall internal fixation of turn trough is provided with driving motor, driving motor's upper and lower both sides just are located be provided with Driving motor's location auto-lock subassembly drive motor accessible when driving motor starts driving motor drives the bolt axle rotates, and then drives the division board is opened, and is holding at the user's hand the division board or when the division board received the obstacle and blockked, location auto-lock subassembly breaks away from, and then makes driving motor reaches the bolt axle breaks away from the transmission, and then can keep the stop position of bolt axle, location auto-lock subassembly is kept away from driving motor one side just is located be provided with the screens device in the door and window frame, the screens device can keep the position after the bolt axle stops, and then can realize controlling according to the user's wish the function that the division board opened the range, the left side inner wall of rotary slot with be provided with return means between the bolt axle, promote at the user the division board rotates certain angle towards opening direction and can be right the screens device unblock and pass through return means makes the division board changes And returning to the state of separating the containing cavity of the separation plate.

Furthermore, the positioning self-locking assembly comprises a driving gear cavity communicated and arranged in the inner wall of the left side of the rotary groove, a driving gear is rotatably arranged in the driving gear cavity, a toothed ring capable of being meshed with the driving gear is fixedly arranged on the bolt shaft, a positioning self-locking rotating cavity is arranged in the inner wall of one side of the driving gear, which is close to the driving motor, a first rotating block body fixedly connected with the driving gear is rotatably arranged in the positioning self-locking rotating cavity, a first square sliding cavity with an opening facing one side of the driving motor is arranged in the first rotating block body, the upper end and the lower end of the driving motor are respectively and dynamically connected with a rotating lead screw, one end of the rotating lead screw, which is far away from the driving motor, is rotatably connected to the inner wall of the first square sliding cavity, and a second rotating block body is arranged in the positioning self-locking rotating cavity, which, the sliding block is characterized in that a second square sliding cavity which is the same as the first square sliding cavity in shape is arranged in the second rotating block in a vertically penetrating mode, the second square sliding cavity and the first square sliding cavity are slidably provided with a positioning self-locking partition block in threaded connection with the rotating lead screw, a first trapezoidal block is fixedly arranged on the outer arc-shaped end face of the second rotating block, a first pushing groove is formed in the inner wall of the left side of the positioning self-locking rotating cavity in a communicated mode, a first grid stop block capable of limiting the first trapezoidal block to turn is slidably arranged in the first pushing groove, and a first pushing spring is fixedly connected between the left end face of the first grid stop block and the inner wall of the left side of the first pushing groove.

Furthermore, the first trapezoidal block is in a tooth shape, and an inclined plane structure is arranged on the right end face of the first check block.

Furthermore, the second square sliding cavity and the first square sliding cavity are square in the top view direction, and the number of the first trapezoidal blocks is four.

Further, the clamping device comprises a second push groove communicated with and arranged in the inner wall of the left side of the rotary groove, a second push block is arranged in the second push groove in a sliding manner, a second push spring is fixedly connected between the left end surface of the second push block and the inner wall of the left side of the second push groove, a first electromagnet is fixedly arranged in the inner wall of the left side of the second push groove, a second electromagnet capable of being matched with the first electromagnet is fixedly arranged on the left end surface of the second push block, when the isolating plate stops rotating, the first electromagnet and the second electromagnet are electrified, the first electromagnet and the second electromagnet are mutually attracted and drive the second push block to move to the left to the maximum extent in the second push groove, and a second trapezoidal block is arranged on the right side of the second push block and positioned in the second push groove in a sliding manner, and a second lattice block which can be blocked by the second trapezoid block is arranged on the bolt shaft.

Furthermore, the return device comprises a return rotary groove arranged in the bolt shaft, a fixed block capable of rotating in the return rotary groove is fixedly arranged in the inner wall of the left side of the rotary groove, return spring grooves with backward openings are arranged in the fixed block in an up-and-down array mode, and a return spring is fixedly arranged between the inner wall of each return spring groove and the front end face of the bolt shaft.

Further, a first limit switch is fixedly arranged on the rear end face of the fixed block, a second limit switch which can be matched with the first limit switch is fixedly arranged on the front end face of the bolt shaft, and when the second limit switch is abutted to the first limit switch, namely the bolt shaft rotates to the initial state, the driving motor rotates reversely.

Furthermore, a storage battery is fixedly arranged on the left side of the driving motor and in the door and window frame, electric energy for driving the driving motor is stored in the storage battery, the storage battery can be the second limit switch, the first electromagnet and the second electromagnet provide electric energy, when a user needs to open the isolating plate, the user can press the switch to control the storage battery to supply power to the driving motor, so that the driving motor rotates forwards, the bolt shaft is driven to rotate through the positioning self-locking assembly, when the bolt shaft is blocked to stop rotating, the storage battery supplies power to the first electromagnet and the second electromagnet, so that the second push block moves to the left to the maximum extent in the second push groove, and when the bolt shaft rotates to the initial state, the storage battery supplies power to the driving motor, so that the driving motor rotates reversely, and meanwhile the first electromagnet and the second electromagnet lose power.

Furthermore, the sum of the friction between the rotating screw rod and the positioning self-locking block and the friction between the positioning self-locking block and the first square sliding cavity are greater than the sum of the friction when the bolt shaft and the isolating plate rotate, so that when the driving motor drives the rotating screw rod to rotate, the first rotating block body can be driven to rotate by the positioning self-locking block, the bolt shaft is driven to rotate, when the isolating plate is blocked, the sum of the friction between the rotating screw rod and the positioning self-locking block and the friction between the positioning self-locking block and the first square sliding cavity is less than the sum of the friction when the bolt shaft and the isolating plate rotate, at the moment, the first rotating block body cannot rotate continuously, the driving motor can drive the positioning self-locking block to move in the direction close to one side of the driving motor in the second square sliding cavity and the first square sliding cavity by the continuous rotation, and finally out of the first square sliding cavity.

2. Advantageous effects

Compared with the prior art, the invention has the advantages that:

the window opening and closing device is simple in structure and convenient to operate, meanwhile, the device can be automatically opened and closed when in use, the opening size of a window can be controlled according to personal wishes of a user when in use, the accident of clamping injury caused by the driving of a motor is avoided when in use, the window opening and closing device is safe and reliable, meanwhile, a sensor is not needed to be used, automatic control is realized only through mechanical transmission, and the phenomenon that the sensor is not easy to recognize or cannot be recognized due to the damage of the sensor is further reduced.

Drawings

FIG. 1 is a schematic view of an overall structure of a door/window positioning lock with positioning and self-locking functions according to the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is a schematic top view of the bolt 107 and the fixing block 109 of the present invention;

FIG. 4 is a schematic view of the structure in the direction B-B in FIG. 1;

FIG. 5 is a schematic view of the structure in the direction C-C in FIG. 1;

fig. 6 is a schematic top view of the second rotating block 123 and the first stop 131.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-5, a door and window positioning lock with positioning and self-locking functions comprises a door and window frame 101 fixedly arranged in a wall 102, a door and window frame 104 is arranged on the right end face of the door and window frame 101, a partition board accommodating cavity 105 is arranged in the door and window frame 104 in a front-back penetrating manner, a partition board 106 capable of partitioning the space at the front side and the rear side of the door and window frame 104 is arranged in the partition board accommodating cavity 105, a rotating groove 103 with a rightward opening and communicated with the partition board accommodating cavity 105 is arranged in the door and window frame 101, a bolt shaft 107 is rotatably arranged between the inner walls at the upper side and the lower side of the rotating groove 103, wherein the left end of the partition board 106 extends into the rotating groove 103 and is fixedly connected with the bolt shaft 107, the partition board 106 can be driven to rotate when the bolt shaft 107 rotates, and the space at the front side and the rear side of the door and window frame 104 is connected through the partition board accommodating, a driving motor 119 is fixedly arranged in the inner wall of the left side of the rotary slot 103, positioning self-locking components connected with the bolt shaft 107 and the driving motor 119 are arranged on the upper and lower sides of the driving motor 119 and positioned in the door and window frame 101, the bolt shaft 107 can be driven to rotate by the driving motor 119 when the driving motor 119 is started, so as to drive the isolation plate 106 to be opened, when a user holds the isolation plate 106 or the isolation plate 106 by hand and receives obstruction, the positioning self-locking components are separated, so that the driving motor 119 and the bolt shaft 107 are separated from transmission, so as to keep the stop position of the bolt shaft 107, the positioning self-locking components are far away from one side of the driving motor 119 and positioned in the door and window frame 101, and can keep the position of the bolt shaft 107 after stop, so as to realize the function of controlling the opening amplitude of the isolation plate 106 according to the will of the user, a return device is arranged between the inner wall of the left side of the rotary groove 103 and the bolt shaft 107, when a user pushes the isolation plate 106 to rotate a certain angle towards the opening direction, the blocking device can be unlocked, and the isolation plate 106 is rotated back to the state of isolating the isolation plate accommodating cavity 105 through the return device.

Advantageously, the positioning self-locking assembly comprises a driving gear cavity 113 communicated with and arranged in the inner wall of the left side of the rotary slot 103, a driving gear 114 is rotatably arranged in the driving gear cavity 113, a toothed ring 111 capable of being meshed with the driving gear 114 is fixedly arranged on the bolt shaft 107, a positioning self-locking rotary cavity 121 is arranged in the inner wall of the driving gear 114 close to one side of the driving motor 119, a first rotary block body 127 fixedly connected with the driving gear 114 is rotatably arranged in the positioning self-locking rotary cavity 121, a first square sliding cavity 128 with an opening facing one side of the driving motor 119 is arranged in the first rotary block body 127, the upper end and the lower end of the driving motor 119 are respectively and dynamically connected with a rotary lead screw 122, one end of the rotary lead screw 122 far away from the driving motor 119 is rotatably connected to the inner wall of the first square sliding cavity 128, a second rotating block 123 is rotatably arranged in the positioning self-locking rotating cavity 121 and close to one side of the driving motor 119 and on the first rotating block 127, a second square sliding cavity 124 which has the same shape as the first square sliding cavity 128 is arranged in the second rotating block body 123 in a vertically penetrating manner, a positioning self-locking separation block 126 in threaded connection with the rotary screw 122 is slidably arranged in the second square sliding cavity 124 and the first square sliding cavity 128, a first trapezoid block 125 is fixedly arranged on the outer arc end surface of the second rotating block 123, a first push groove 129 is arranged in the inner wall of the left side of the positioning self-locking rotating cavity 121 in a communicated manner, a first stop 131 capable of limiting the turning direction of the first trapezoid block 125 is slidably disposed in the first slot 129, a first pushing spring 132 is fixedly connected between the left end surface of the first check block 131 and the left inner wall of the first pushing groove 129.

Advantageously, the first trapezoidal block 125 is in a tooth shape, and a slope structure is disposed on a right end surface of the first block 131, so that when the second rotation block 123 rotates in a forward direction, the slope structure disposed on the first block 131 can be pushed to further push the first block 131 to slide in the first push groove 129, and a reverse slope at a right end of the first block 131 can block the reverse rotation of the second rotation block 123.

Advantageously, the second square slide cavity 124 and the first square slide cavity 128 are both square in a top view, and the number of the first trapezoidal blocks 125 is four.

Advantageously, the position-locking device includes a second push slot 115 disposed in the inner wall of the left side of the rotary slot 103 and communicated with each other, a second push block 142 is slidably disposed in the second push slot 115, a second push spring 117 is fixedly connected between the left end surface of the second push block 142 and the left inner wall of the second push slot 115, a first electromagnet 116 is fixedly disposed in the inner wall of the left side of the second push slot 115, a second electromagnet 141 capable of cooperating with the first electromagnet 116 is fixedly disposed on the left end surface of the second push block 142, when the isolating plate 106 stops rotating, the first electromagnet 116 and the second electromagnet 141 are powered on, so that the first electromagnet 116 and the second electromagnet 141 attract each other and drive the second push block 142 to move to the left in the second push slot 115 to the maximum extent, a second trapezoidal block 143 is slidably disposed on the right side of the second push block 142 and in the second push slot 115, the bolt shaft 107 is provided with a second block 112 which can be blocked by the second trapezoid block 143, and when the positioning self-locking assembly disconnects the power transmission between the bolt shaft 107 and the driving motor 119, the rotation angle of the bolt shaft 107 can be maintained through the blocking of the second trapezoid block 143.

Advantageously, the return device includes a return rotary slot 108 disposed in the bolt shaft 107, a fixed block 109 capable of rotating in the return rotary slot 108 is fixedly disposed in the inner wall of the left side of the rotary slot 103, return spring slots 136 with backward openings are disposed in the fixed block 109 in an up-down array, a return spring 135 is fixedly disposed between the inner wall of the return spring slot 136 and the front end face of the bolt shaft 107, and when the return device loses constraint on the bolt shaft 107, the bolt shaft 107 can be driven to rotate to an initial state by the elastic force of the return spring 135.

Advantageously, a first limit switch 134 is fixedly disposed on a rear end surface of the fixed block 109, a second limit switch 133 capable of cooperating with the first limit switch 134 is fixedly disposed on a front end surface of the bolt shaft 107, and when the second limit switch 133 abuts against the first limit switch 134, that is, when the bolt shaft 107 rotates to an initial state, the driving motor 119 rotates in a reverse direction.

Advantageously, a storage battery 118 is fixedly disposed at the left side of the driving motor 119 and inside the door and window frame 101, the storage battery 118 stores electric energy for driving the driving motor 119, and the storage battery 118 can be the second limit switch 133, the first limit switch 134, the first electromagnet 116 and the second electromagnet 141 provide electric energy, when a user needs to open the partition board 106, the user can press the switch to control the storage battery 118 to supply power to the driving motor 119, so that the driving motor 119 rotates forward, and further the bolt shaft 107 is driven to rotate by the positioning self-locking assembly, when the bolt shaft 107 is blocked to stop rotating, the storage battery 118 supplies power to the first electromagnet 116 and the second electromagnet 141, and further the second push block 142 moves to the left to the maximum extent inside the second push slot 115, when the bolt shaft 107 rotates to the initial state, the battery 118 supplies power to the driving motor 119 so that the driving motor 119 rotates in the reverse direction, and the first electromagnet 116 and the second electromagnet 141 are de-energized.

Advantageously, the sum of the friction between the rotating screw 122 and the positioning self-locking block 126 and the first square sliding cavity 128 is greater than the sum of the friction when the bolt 107 and the partition plate 106 rotate, so that when the driving motor 119 drives the rotating screw 122 to rotate, the first rotating block 127 is driven to rotate by the positioning self-locking block 126, and the bolt 107 is driven to rotate, and when the partition plate 106 is blocked, the sum of the friction between the rotating screw 122 and the positioning self-locking block 126 and between the positioning self-locking block 126 and the first square sliding cavity 128 is less than the sum of the friction when the bolt 107 and the partition plate 106 rotate, and at this time, the first rotating block 127 cannot rotate any more, and the driving motor 119 rotates any more to drive the positioning self-locking block 126 to move closer to the second square sliding cavity 124 and the first square sliding cavity 128 The direction of the side of the drive motor 119 moves and eventually disengages from the first square slide chamber 128.

In an initial state, the space at the front side and the space at the rear side of the door window frame 104 are partitioned by the partition plate 106, the front end face of the bolt shaft 107 abuts against the rear end face of the fixed block 109, and the positioning self-locking partitioning block 126 is located in the second square sliding cavity 124 and the first square sliding cavity 128.

S1: when the door and window positioning lockset with the positioning self-locking function of the invention is used for opening the isolation plate 106, a user presses the opening switch, wherein, the opening switch can be a remote control switch or a fixed switch arranged on the door and window positioning lockset with the positioning self-locking function, or, the mobile device may be turned on, and only the power of the driving motor 119 needs to be supplied through the storage battery 118, at this time, the driving motor 119 rotates in the forward direction, and further the positioning self-locking block 126 is driven to rotate by the rotating screw 122, and further the second rotating block 123 and the first rotating block 127 are driven to rotate in the forward direction, thereby driving the driving gear 114 to rotate forward, and further driving the bolt shaft 107 to rotate forward, thereby driving the isolation plate 106 to rotate and communicating the two spaces at the front and rear sides of the door and window frame 104 through the isolation plate accommodating cavity 105;

s2: when a user uses a hand or other parts to block the rotation of the isolation plate 106 or a blocking object exists in the rotation direction of the isolation plate 106, the sum of the friction force between the rotating screw 122 and the positioning self-locking blocking block 126 and between the positioning self-locking blocking block 126 and the first square sliding cavity 128 is smaller than the sum of the friction force when the bolt shaft 107 and the isolation plate 106 rotate, at this time, the first rotating block body 127 cannot rotate continuously, so that when the driving motor 119 rotates continuously, the rotating screw 122 drives the positioning self-locking blocking block 126 to approach in the second square sliding cavity 124 and the first square sliding cavity 128, when the positioning self-locking blocking block 126 is completely separated from the first square sliding cavity 128, the driving motor 119 can stop rotating, and at this time, the second ladder-shaped block 143 limits the rotation of the bolt shaft 107 through the second lattice block 112, meanwhile, the second pushing block 142 moves leftwards to the maximum extent in the second pushing groove 115;

s3: when the partition board 106 needs to be closed, a user pushes the partition board 106 to rotate towards an opening direction by an interval angle between the two second lattice stops 112, at this time, the second trapezoidal block 143 can be pushed by the second lattice stop 112 to move towards the left side in the second pushing groove 115, and finally the blocking effect on the second lattice stop 112 is lost, at this time, the bolt shaft 107 is restored to the initial state under the elastic force of the return spring 135;

s4: when the isolation plate 106 returns to the initial state, the second limit switch 133 and the first limit switch 134 are again abutted, at this time, the driving motor 119 reversely rotates to drive the rotating screw 122 to reversely rotate, at this time, due to the limiting effect of the first lattice stopper 131 on the first trapezoidal block 125, the second rotating block 123 cannot reversely rotate, and due to the number of the first trapezoidal blocks 125 being four, when the first rotating block 127 reversely rotates to the initial state, the second square sliding cavity 124 and the first square sliding cavity 128 are again opposite, so that the positioning self-locking blocking block 126 can be again inserted into the first square sliding cavity 128 under the driving of the rotating screw 122.

The invention has the beneficial effects that: the window opening and closing device is simple in structure and convenient to operate, meanwhile, the device can be automatically opened and closed when in use, the opening size of a window can be controlled according to personal wishes of a user when in use, the accident of clamping injury caused by the driving of a motor is avoided when in use, the window opening and closing device is safe and reliable, meanwhile, a sensor is not needed to be used, automatic control is realized only through mechanical transmission, and the phenomenon that the sensor is not easy to recognize or cannot be recognized due to the damage of the sensor is further reduced.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a door and window location tool to lock with location self-locking function which characterized in that: including fixed door and window frame (101) that sets up in wall body (102), be provided with door and window frame (104) on the right-hand member face of door and window frame (101), the door and window frame (104) in run through around be provided with the division board and hold chamber (105), be provided with in the division board holds chamber (105) and can with division board (106) of the space partition of door and window frame (104) front and back side, be provided with opening right in door and window frame (101) and with division board holds rotary trough (103) that chamber (105) are linked together, rotatable bolt axle (107) that is provided with between the upper and lower lateral inner wall of rotary trough (103), wherein, the left end of division board (106) extends to let in rotary trough (103) and with bolt axle (107) fixed connection can drive when bolt axle (107) rotate division board (106) rotate, and then will through division board holds chamber (105) the space connection of door and window frame (104) front and back side, a driving motor (119) is fixedly arranged in the inner wall of the left side of the rotary groove (103), positioning self-locking assemblies connected with the bolt shaft (107) and the driving motor (119) are arranged in the upper side and the lower side of the driving motor (119) and positioned in the door and window frame body (101), when the driving motor (119) is started, the bolt shaft (107) can be driven to rotate by the driving motor (119) so as to drive the isolation plate (106) to be opened, when a user holds the isolation plate (106) or the isolation plate (106) is blocked by an obstacle, the positioning self-locking assemblies are separated, so that the driving motor (119) and the bolt shaft (107) are separated from transmission, the stop position of the bolt shaft (107) can be kept, the positioning self-locking assemblies are far away from one side of the driving motor (119) and positioned in the door and window frame body (101) and are provided with a clamping device, the clamping device can keep the position of the bolt shaft (107) after stopping, so that the function of controlling the opening range of the isolating plate (106) according to the will of a user can be realized, a return device is arranged between the inner wall of the left side of the rotary groove (103) and the bolt shaft (107), the clamping device can be unlocked when the user pushes the isolating plate (106) to rotate towards the opening direction by a certain angle, and the isolating plate (106) is rotated back to the state of isolating the isolating plate accommodating cavity (105) through the return device;

location auto-lock subassembly including be linked together set up in driving gear chamber (113) in rotary tank (103) left side inner wall, rotatable drive gear (114) that is provided with in driving gear chamber (113), peg (107) go up fixed be provided with can with drive gear (114) meshed ring gear (111), drive gear (114) are close to be provided with location auto-lock in the inner wall of driving motor (119) one side and rotate chamber (121), rotatable be provided with in location auto-lock rotation chamber (121) with drive gear (114) fixed connection's first rotation block (127), be provided with the opening orientation in first rotation block (127) first square sliding chamber (128) of driving motor (119) one side, the upper and lower both ends of driving motor (119) power connection respectively have rotation lead screw (122), it keeps away from to rotate lead screw (122) one end rotatable connect in of driving motor (119) first square sliding chamber (128), the one end is connected in A second rotating block body (123) is rotatably arranged on the inner wall of the sliding cavity (128), the first rotating block body (127) is close to one side of the driving motor (119) and is positioned in the positioning self-locking rotating cavity (121), a second square sliding cavity (124) with the same shape as the first square sliding cavity (128) is arranged in the second rotating block body (123) in an up-down penetrating manner, a positioning self-locking partition block (126) in threaded connection with the rotating lead screw (122) is slidably arranged in the second square sliding cavity (124) and the first square sliding cavity (128), a first trapezoidal block (125) is fixedly arranged on the arc-shaped end surface of the outer side of the second rotating block body (123), a first pushing groove (129) is arranged in the inner wall of the left side of the positioning self-locking rotating cavity (121) in a communicating manner, and a first grid block (131) capable of limiting the first trapezoidal block (125) in a sliding manner is slidably arranged in the first pushing groove (129), a first pushing spring (132) is fixedly connected between the left end surface of the first check block (131) and the left inner wall of the first pushing groove (129);

the first trapezoidal block (125) is in a tooth shape, and an inclined plane structure is arranged on the right end face of the first check block (131);

the second square slide cavity (124) and the first square slide cavity (128) are square in the top view direction, and the number of the first trapezoidal blocks (125) is four.

2. A door and window positioning lock with positioning self-locking function as claimed in claim 1, characterized in that: the clamping device comprises a second pushing groove (115) communicated with and arranged in the inner wall of the left side of the rotary groove (103), a second pushing block (142) is arranged in the second pushing groove (115) in a sliding manner, a second pushing spring (117) is fixedly connected between the left side end face of the second pushing block (142) and the left side inner wall of the second pushing groove (115), a first electromagnet (116) is fixedly arranged in the inner wall of the left side of the second pushing groove (115), a second electromagnet (141) matched with the first electromagnet (116) is fixedly arranged on the left side end face of the second pushing block (142), when the isolating plate (106) stops rotating, the first electromagnet (116) and the second electromagnet (141) are electrified, the first electromagnet (116) and the second electromagnet (141) are attracted to each other and drive the second pushing block (142) to move to the left to the maximum extent in the second pushing groove (115), a second trapezoidal block (143) is slidably arranged on the right side of the second pushing block (142) and in the second pushing groove (115), and a second grid block (112) which can be blocked by the second trapezoidal block (143) is arranged on the bolt shaft (107).

3. A door and window positioning lock with positioning self-locking function as claimed in claim 2, characterized in that: the return device comprises a return rotary groove (108) arranged in the bolt shaft (107), a fixed block (109) capable of rotating in the return rotary groove (108) is fixedly arranged in the inner wall of the left side of the rotary groove (103), return spring grooves (136) with backward openings are formed in the fixed block (109) in an up-and-down array mode, and return springs (135) are fixedly arranged between the inner wall of each return spring groove (136) and the end face of the front side of the bolt shaft (107).

4. A door and window positioning lock with positioning self-locking function as claimed in claim 3, characterized in that: a first limit switch (134) is fixedly arranged on the rear end face of the fixed block (109), and a second limit switch (133) which can be matched with the first limit switch (134) is fixedly arranged on the front end face of the bolt shaft (107).

5. A door and window positioning lock with positioning self-locking function according to claim 4, characterized in that: a storage battery (118) is fixedly arranged on the left side of the driving motor (119) and positioned in the door and window frame body (101), electric energy for driving the driving motor (119) is stored in the storage battery (118), the storage battery (118) can be a second limit switch (133), a first limit switch (134), a first electromagnet (116) and a second electromagnet (141) provide electric energy, when a user needs to open the isolating plate (106), the storage battery (118) can be controlled to supply power to the driving motor (119) by pressing down a switch, so that the driving motor (119) rotates forwards, the bolt shaft (107) is driven to rotate through the positioning self-locking assembly, and when the bolt shaft (107) is blocked to stop rotating, the storage battery (118) supplies power to the first electromagnet (116) and the second electromagnet (141), and the second push block (142) moves leftwards in the second push groove (115) to the maximum extent, when the bolt shaft (107) rotates to the initial state, the storage battery (118) supplies power to the driving motor (119) so as to enable the driving motor (119) to rotate in the reverse direction, and meanwhile the first electromagnet (116) and the second electromagnet (141) lose power.

6. A door and window positioning lock with positioning self-locking function according to claim 5, characterized in that: the sum of the friction force between the rotating lead screw (122) and the positioning self-locking and isolating block (126) and the first square sliding cavity (128) is greater than the sum of the friction force when the bolt shaft (107) and the isolating plate (106) rotate, so that when the driving motor (119) drives the rotating lead screw (122) to rotate, the first rotating block (127) can be driven to rotate by the positioning self-locking and isolating block (126) to drive the bolt shaft (107) to rotate, and when the isolating plate (106) is blocked, the sum of the friction force between the rotating lead screw (122) and the positioning self-locking and isolating block (126) and the friction force between the positioning self-locking and isolating block (126) and the first square sliding cavity (128) is less than the sum of the friction force when the bolt shaft (107) and the isolating plate (106) rotate, and at the first rotating block (127) cannot rotate continuously, the driving motor (119) continues to rotate to drive the positioning self-locking separation block (126) to move towards the direction close to one side of the driving motor (119) in the second square sliding cavity (124) and the first square sliding cavity (128), and finally to be separated from the first square sliding cavity (128).