CN109098561A

CN109098561A - A kind of lock for windows

Info

Publication number: CN109098561A
Application number: CN201810988660.3A
Authority: CN
Inventors: 乐康
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2018-12-28

Abstract

The invention discloses a kind of lock for windows, including apparatus main body, it is set to the intracorporal positioning device of described device master, setting with the intracorporal locking device of described device master and be set to the intracorporal limiting device of described device master, the positioning device includes being set to intracorporal first cavity of described device master, the left side of first cavity is slidably provided with left window frame, the right side of first cavity is slidably provided with right window frame, the second cavity of opening to the right is provided in the left window frame, the first sliding block is slidably provided in second cavity, third cavity up and down is provided in first sliding block, the first spring is fixedly connected between the left end of first sliding block and the inner left wall of second cavity, what is be connected in the inner left wall of second cavity is provided with the 4th cavity；Present apparatus structure is simple, easy to use, the achievable locking and unlock for pushing away window, is not take up place, and safety and environmental protection is worth recommending.

Description

A kind of lock for windows

Technical field

The present invention relates to door and window lock technology field, specifically a kind of lock for windows.

Background technique

Window is a kind of article of pattern that can increase building natural lighting and can improve building, and pushes away window now More popular compared to traditional windows, the features such as in addition to preventing take up the interior space, beautiful appearance, safety is also one very heavy The index wanted, present lock occupy volume and can be easily damaged because the place of locking is exposed to the external world when opening, then therefore Design is simple and a kind of effective lock for windows it is really necessary to.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of lock for windows, it is able to solve above-mentioned existing asking in the art Topic.

The present invention is achieved through the following technical solutions: a kind of lock for windows of the invention, including apparatus main body, setting In the intracorporal positioning device of described device master, setting and the intracorporal locking device of described device master and it is set to described device master Intracorporal limiting device, the positioning device include being set to intracorporal first cavity of described device master, first cavity Left side is slidably provided with left window frame, and the right side of first cavity is slidably provided with right window frame, in the left window frame It is provided with opening the second cavity to the right, is slidably provided with the first sliding block in second cavity, in first sliding block It is provided with third cavity up and down, it is fixed between the left end of first sliding block and the inner left wall of second cavity to connect It is connected to the first spring, what is be connected in the inner left wall of second cavity is provided with the 4th cavity, before the 4th cavity is interior Rotary column is fixedly connected between inner wall afterwards, what is be connected in the downside inner wall of the 4th cavity is provided with the 5th cavity, described It is rotatably provided with reel in 5th cavity, bracing wire is arranged on the reel, the other end of the bracing wire extends logical The surface for crossing rotary column in the 4th cavity extends the left side for being passed through in second cavity and being fixedly connected on first sliding block End, the reel is fixedly connected with first rotating shaft, is provided with the 6th cavity in the inner left wall of the 5th cavity, and described the The left end of one shaft, which extends, to be passed through in the 6th cavity and is fixedly connected with first bevel gear, is provided in the 6th cavity The second bevel gear being meshed with the first bevel gear, the second bevel gear are fixedly connected with the second shaft, and the described 6th What is be connected in the downside inner wall of cavity is provided with the 7th cavity, is slidably provided with the second sliding block in the 7th cavity, Second shaft is rotatably assorted by bearing to be connected on second sliding block, the left end of second sliding block and the described 7th It is fixedly connected with second spring between the inner left wall of cavity, is provided with the 8th cavity in the downside inner wall of the 7th cavity, What is be connected between 7th cavity and the 8th cavity is provided with the 9th cavity, and the lower end of second shaft passes through institute It states the extension of the 9th cavity to be passed through in the 8th cavity and be fixedly connected with first gear, slidably be set in the 8th cavity The rack gear being meshed with the first gear is set, what is be connected in the downside inner wall of the 8th cavity is provided with what Open Side Down Tenth cavity is provided with the first fixed block being fixedly connected with the lower end of the rack gear in the tenth cavity, and the described 5th is empty First is provided in the right side inner wall of chamber to begin to speak, the 5th cavity with described first begin to speak between be connected be provided with second Begin to speak, the right end of the first rotating shaft extend through described second begin to speak to be passed through described first begin to speak in and rotated and match by bearing Conjunction is connected on the right side inner wall that described first begins to speak, and described first, which begins to speak, is fixedly connected with spine in the interior first rotating shaft Wheel, the ratchet left end are fixedly connected with the second fixed block, described second begin to speak in be provided with torque spring, described second begins to speak Downside inner wall in the third that is provided with that is connected begin to speak, the third begin to speak it is interior be slidably provided with third sliding block, it is described The right end of third sliding block is fixedly connected with the Four-slider that can be slided up and down in the third is begun to speak, the right side that the third is begun to speak Being provided with for being connected in the inner wall of side the 4th is begun to speak, and the described 4th, which begins to speak, is fixedly connected with fixed column between interior front and back ability inner wall, Described 4th, which begins to speak, is rotatably provided with bull stick in the interior fixed column.

The locking device includes the 5 to be open to the left being set in the right window frame as a preferred technical solution, Begin to speak, symmetrical in the described 5th upper and lower sides inner wall begun to speak and being provided with of being connected the 6th is begun to speak, the described 6th begin to speak in can Sliding is provided with the 5th sliding block, and the 5th sliding block is far from described 5th one end begun to speak and the described 6th separate institute begun to speak It states and is fixedly connected with third spring between the side inner wall that the 5th begins to speak, what is be connected in the described 6th right side inner wall begun to speak sets It is equipped with the 7th to begin to speak, the described 7th begins to speak, and interior to be slidably provided with the 6th be fixedly connected with the right end of the 5th sliding block sliding Block, the symmetrical described 7th begin to speak between be connected be provided with and the 8th begin to speak, the described 8th, which begins to speak, interior is rotatably provided with Cam, the cam are fixedly connected with third shaft, are provided with the 9th in the described 8th right side inner wall begun to speak and begin to speak, and described The right end extension of three shafts is passed through in the 9th cavity and is fixedly connected with second gear, the 9th upper inside walls begun to speak What is be inside connected is provided with the first cunning chamber for opening forward, and first cunning is intracavitary to be slidably provided with the 7th sliding block, described The lower end of 7th sliding block is provided with the tooth-shape structure that can be meshed with the second gear, the rear end of the 7th sliding block with it is described The 4th spring is fixedly connected between the rear side inner wall of first sliding chamber.

The limiting device includes being set in the 4th right side begun to speak of being connected as a preferred technical solution, The second sliding chamber in wall, described second it is sliding it is intracavitary be slidably provided with the 8th sliding block, the upper end of the 8th sliding block with it is described The lower end on the right side of bull stick abuts against, and the third that is provided with that is symmetrical in the left and right sides inner wall of the described second sliding chamber and being connected is slided Chamber, the third cunning is intracavitary to be slidably provided with the third fixed block being fixedly connected with the 8th sliding block, and described first is empty What is be connected in the downside inner wall of chamber is provided with the symmetrical 4th sliding chamber, is connected between symmetrical described 4th sliding chamber It is provided with the 5th cunning chamber, the 4th cunning is intracavitary to be slidably provided with the 9th sliding block, and the upper end of the 9th sliding block is provided with Bevel structure, is fixedly connected with the 4th fixed block between the 9th sliding block, the lower end of the 9th sliding block and described 4th sliding It is fixedly connected with the 5th spring between the downside inner wall of chamber, is provided in the right side inner wall of the described 4th sliding chamber and first sky The 6th sliding chamber that chamber is connected, the described 6th it is sliding it is intracavitary be slidably provided with the tenth sliding block, the lower end of the tenth sliding block with The 6th spring is fixedly connected between the downside inner wall of described 6th sliding chamber.

The right end of the torque spring is fixedly connected on second fixed block as a preferred technical solution, described The left end of torque spring is fixedly connected on the rear side inner wall that described second begins to speak.

The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, locked by the present apparatus to window is pushed away When, it is with hand that left window frame and right window frame is close to each other, when the 4th sliding chamber with when being connected with the tenth cavity, the 9th sliding block is the It is moved up under the effect of five springs, then the left end of the 9th sliding block and the right end of the first fixed block on right side abut against, and then the 9th Sliding block drives the first fixed block to be moved to the left, and then is moved to the left with carry-over bar, and then drives first gear rotation, and then drive Second shaft rotation, and then drive second bevel gear rotation, under the active force of first bevel gear second bevel gear rotation and to It moves left, when the 6th slides chamber and the second sliding chamber aligns, the first fixed block is in limit on the left position, and rack gear is in limit on the left position It sets, first gear is in limit on the left position, and the second sliding block is in limit on the left position, and second bevel gear is mutually divided with first bevel gear It opens, the tenth sliding block moves up under the action of six springs, and then the 8th sliding block is driven to move up, and then drives bull stick Right end is flipped up, and then the left end of bull stick is driven to downwardly turn over, and then Four-slider is driven to move down, and then drives third Sliding block moves down, and then third sliding block is driven to be disengaged from ratchet, and then first rotating shaft turns under the action of torque spring It is dynamic, and then reel rotation is driven, and then drive bracing wire to elongate, and then the first sliding block moves right under the action of the first spring It is dynamic, it begins to speak into the 5th interior, and then the 5th sliding block is located remotely from each other under the action of the first sliding block, when third cavity is begun to speak with the 6th When aligning, the 5th sliding block is close to each other to enter third cavity, and lock for windows is lived, and when to be unlocked, the 7th sliding block is pressed backward, into And the 7th sliding block drives second gear rotation, and then drives the rotation of third shaft, and then rotates with moving cam, and then drives the 6th Sliding block is located remotely from each other, and then is driven the 5th sliding block to be located remotely from each other and left third cavity, and left window frame and right window frame are separated, left side The left end of the right end and the first fixed block of 9th sliding block abuts against, and the 9th sliding block drives the first fixed block to move right, and then band Carry-over bar moves right, and then drives first gear rotation, and the second sliding block moves right under the action of second spring, the second cone Gear and first bevel gear are intermeshed, and then first gear drives second bevel gear rotation, and then first bevel gear is driven to turn It is dynamic, and then first rotating shaft rotation is driven, and then drive ratchet wheel, and then torque spring is driven to put aside elastic potential energy, the present apparatus Structure is simple, easy to use, the achievable locking and unlock for pushing away window, is not take up place, and safety and environmental protection is worth recommending.

Detailed description of the invention

The present invention is described in detail by following specific embodiments and drawings for ease of explanation,.

Fig. 1 is a kind of schematic diagram of internal structure of lock for windows of the invention；

Fig. 2 is the enlarged diagram of " A " in Fig. 1；

Fig. 3 is the left view of " B-B " in Fig. 1；

Fig. 4 is the part drawing of " cam " in Fig. 1.

Specific embodiment

As Figure 1-Figure 4, a kind of lock for windows of the invention, including apparatus main body 11, it is set to described device main body 11 Interior positioning device, setting and locking device in described device main body 11 and the limit being set in described device main body 11 Device, the positioning device include the first cavity 34 being set in described device main body 11, the left side of first cavity 34 It is slidably provided with left window frame 35, the right side of first cavity 34 is slidably provided with right window frame 33, the left window frame It is provided with the second cavity 56 of opening to the right in 35, is slidably provided with the first sliding block 57 in second cavity 56, it is described Third cavity 58 up and down, the left end of first sliding block 57 and second cavity 56 are provided in first sliding block 57 The first spring 55 is fixedly connected between inner left wall, what is be connected in the inner left wall of second cavity 56 is provided with the 4th Cavity 37 is fixedly connected with rotary column 36, the downside inner wall of the 4th cavity 37 between inner wall before and after the 4th cavity 37 is interior What is be inside connected is provided with the 5th cavity 15, and reel 14, the reel are rotatably provided in the 5th cavity 15 Bracing wire 38 is arranged on 14, the surface that the other end of the bracing wire 38 extends through rotary column 36 in the 4th cavity 37 extends logical Enter in second cavity 56 and be fixedly connected on the left end of first sliding block 57, the reel 14 is fixedly connected with first Shaft 73, the 6th cavity 40 is provided in the inner left wall of the 5th cavity 15, and the left end of the first rotating shaft 73 extends logical Enter in the 6th cavity 40 and be fixedly connected with first bevel gear 39, is provided in the 6th cavity 40 and first cone The second bevel gear 41 that gear 39 is meshed, the second bevel gear 41 are fixedly connected with the second shaft 42, the 6th cavity What is be connected in 40 downside inner wall is provided with the 7th cavity 74, is slidably provided with the second sliding block in the 7th cavity 74 44, second shaft 42 is rotatably assorted by bearing to be connected on second sliding block 44, the left end of second sliding block 44 Second spring 43 is fixedly connected between the inner left wall of the 7th cavity 74, in the downside inner wall of the 7th cavity 74 It is provided with the 8th cavity 13, what is be connected between the 7th cavity 74 and the 8th cavity 13 is provided with the 9th cavity 75, The lower end of second shaft 42 is passed through in the 8th cavity 13 by the 9th cavity 75 extension and is fixedly connected with the One gear 12, is slidably arranged the rack gear 45 being meshed with the first gear 12 in the 8th cavity 13, and the described 8th What is be connected in the downside inner wall of cavity 13 is provided with the tenth cavity 47 that Open Side Down, be provided in the tenth cavity 47 with The first fixed block 46 that the lower end of the rack gear 45 is fixedly connected is provided with first in the right side inner wall of the 5th cavity 15 and opens Chamber 59, the 5th cavity 15 with described first begin to speak to be connected between 59 be provided with and second begin to speak 17, the first rotating shaft 73 right end extends through described second and begins to speak 17 to be passed through described first and begin to speak in 59 and be rotatably assorted by bearing to be connected to institute State first begin to speak 59 right side inner wall on, be fixedly connected with ratchet 60 in the described first first rotating shaft 73 begun to speak in 59, 60 left end of ratchet is fixedly connected with the second fixed block 18, and described second, which begins to speak, is provided with torque spring 16 in 17, and described Two begin to speak 17 downside inner wall in the third that is provided with that is connected begin to speak 67, the third begins to speak slidably to be provided in 67 Three sliding blocks 61, the right end of the third sliding block 61, which is fixedly connected with, to begin to speak the Four-slider slided up and down in 67 in the third 65, the third begin to speak 67 right side inner wall in be connected be provided with and the 4th begin to speak 62, the described 4th begins to speak in 62 front and back It is fixedly connected with fixed column 63 between inner wall, is rotatably provided with bull stick in the described 4th fixed column 63 begun to speak in 62 64。

Valuably, the locking device include the opening that is set in the right window frame to the left the 5th begin to speak 51, it is described 5th begin to speak 51 upper and lower sides inner wall in symmetrical and being provided with of being connected the 6th begin to speak 53, the described 6th begins to speak in 53 slidably Be provided with the 5th sliding block 52, the 5th sliding block 52 far from the described 5th begin to speak 51 one end with the described 6th begin to speak 53 it is remote Begin to speak from the described 5th 51 side inner wall between be fixedly connected with third spring 54, the described 6th begin to speak 53 right side inner wall in Being provided with for being connected the 7th begins to speak 32, the described 7th begins to speak slidably be provided in 32 it is solid with the right end of the 5th sliding block Surely the 6th sliding block 31 connected, the symmetrical described 7th begins to speak, and being provided with of being connected between 32 the 8th begins to speak the 50, the described 8th It begins to speak rotatably to be provided with cam 48 in 50, the cam 48 is fixedly connected with third shaft 49, and the described 8th begins to speak 50 It is provided with the 9th in the inner wall of right side and begins to speak 70, the right end extension of the third shaft 49 is passed through in the 9th cavity 70 and fixed Be connected with second gear 29, the described 9th begin to speak 70 upper inside walls in be connected be provided with for opening forward first sliding chamber 71, the 7th sliding block 30 is slidably provided in the first sliding chamber 71, and the lower end of the 7th sliding block 30 is provided with can be with institute State the tooth-shape structure that second gear 29 is meshed, the rear side inner wall of the rear end of the 7th sliding block 30 and the first sliding chamber 71 it Between be fixedly connected with the 4th spring 72.

Valuably, the limiting device include be connected be set to the described 4th begin to speak 62 right side inner wall in second Sliding chamber 25, is slidably provided with the 8th sliding block 24 in the described second sliding chamber 25, the upper end of the 8th sliding block 24 with described turn The lower end on the right side of bar 64 abuts against, and the third that is provided with that is symmetrical in the left and right sides inner wall of the described second sliding chamber 25 and being connected is slided Chamber 69, the third are slided in chamber 69 and are slidably provided with the third fixed block 68 being fixedly connected with the 8th sliding block 24, institute State the symmetrical 4th sliding chamber 19 that is provided with being connected in the downside inner wall of the first cavity 34, symmetrical described 4th sliding chamber What is be connected between 19 is provided with the 5th sliding chamber 21, is slidably provided with the 9th sliding block 20 in the described 4th sliding chamber 19, described The upper end of 9th sliding block 20 is provided with bevel structure, is fixedly connected with the 4th fixed block 22 between the 9th sliding block 20, described It is fixedly connected with the 5th spring 23 between the lower end of 9th sliding block 20 and the downside inner wall of the 4th sliding chamber 19, the described 4th is sliding It is provided with the sliding chamber 27 of the 6th to be connected with first cavity 34 in the right side inner wall of chamber 19, can be slided in the described 6th sliding chamber 27 Dynamic is provided with the tenth sliding block 26, fixed company between the lower end of the tenth sliding block 26 and the downside inner wall of the 6th sliding chamber 27 It is connected to the 6th spring 28.

Valuably, the right end of the torque spring 16 is fixedly connected on second fixed block 18, the torque spring 16 left end be fixedly connected on described second begin to speak 17 rear side inner wall on.

When original state, the 8th sliding block 24 is in lower limit position, and third sliding block 61 is in upper limit position, the first sliding block 57 are in limit on the left position, have maximum elastic potential energy in torque spring 16, and rack gear 45 is in limit on the right-right-hand limit position, and first is fixed Block 46 is in limit on the right-right-hand limit position, and the second sliding block 44 is in limit on the right-right-hand limit position, and first bevel gear 39 is mutually nibbled with second bevel gear 41 It closes.

It is with hand that left window frame 35 and right window frame 33 is close to each other when by the present apparatus to pushing away window and locking, when the 4th sliding Chamber 19 with when being connected with the tenth cavity 47, the 9th sliding block 20 moves up under the effect of the 5th spring 23, then the of right side The left end of nine sliding blocks 20 and the right end of the first fixed block 46 abut against, and then the 9th sliding block 20 drives the first fixed block 46 to moving to left It is dynamic, and then be moved to the left with carry-over bar 45, and then first gear 12 is driven to rotate, and then drive the rotation of the second shaft 42, in turn Second bevel gear 41 is driven to rotate, second bevel gear 41 is rotated and is moved to the left under the active force of first bevel gear 39, when the When six sliding chambers 27 and the second sliding chamber 25 align, the first fixed block 46 is in limit on the left position, and rack gear 45 is in limit on the left position, First gear 12 is in limit on the left position, and the second sliding block 44 is in limit on the left position, second bevel gear 41 and first bevel gear 39 It being separated from each other, the tenth sliding block 26 moves up under the action of the 6th spring 28, and then the 8th sliding block 24 is driven to move up, into And drive the right end of bull stick 64 to be flipped up, and then drive bull stick 64 left end downwardly turn over, and then drive Four-slider 65 to Lower movement, and then drive third sliding block 61 to move down, and then drive third sliding block 61 to be disengaged from ratchet 60, and then first Shaft 73 rotates under the action of torque spring 16, and then reel 14 is driven to rotate, and then bracing wire 38 is driven to elongate, Jin Er One sliding block 57 moves right under the action of the first spring 55, begins to speak in 51 into the 5th, and then the 5th sliding block 52 is sliding first Be located remotely from each other under the action of block 57, when third cavity 58 and the 6th begin to speak 53 align when, the entrance close to each other of the 5th sliding block 52 Third cavity 58, lock for windows is lived, and when to be unlocked, the 7th sliding block 30 is pressed backward, and then the 7th sliding block 30 drives second gear 29 rotations, and then drive third shaft 49 to rotate, and then rotate with moving cam 48, and then the 6th sliding block 31 is driven to be located remotely from each other, And then drive the 5th sliding block 52 to be located remotely from each other and leave third cavity 58, left window frame 35 and right window frame 33 are separated, the 9th of left side the The right end of sliding block 20 and the left end of the first fixed block 46 abut against, and the 9th sliding block 20 drives the first fixed block 46 to move right, into And move right with carry-over bar 45, and then drive first gear 12 rotate, the second sliding block 44 under the action of second spring 43 to It moving right, second bevel gear 41 and first bevel gear 39 are intermeshed, and then first gear 12 drives second bevel gear 41 to rotate, And then first bevel gear 39 is driven to rotate, and then first rotating shaft 73 is driven to rotate, and then ratchet 60 is driven to rotate, and then drive and turn round Power spring 16 puts aside elastic potential energy.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention Protection scope should be determined by the scope of protection defined in the claims.

Claims

1. a kind of lock for windows, including apparatus main body, it is set to the intracorporal positioning device of described device master, setting and described device master Intracorporal locking device and it is set to the intracorporal limiting device of described device master, the positioning device includes being set to the dress Main intracorporal first cavity is set, the left side of first cavity is slidably provided with left window frame, the right side of first cavity It is slidably provided with right window frame, the second cavity of opening to the right is provided in the left window frame, can be slided in second cavity Dynamic is provided with the first sliding block, and third cavity up and down, the left end of first sliding block are provided in first sliding block It is fixedly connected with the first spring between the inner left wall of second cavity, is connected in the inner left wall of second cavity Be provided with the 4th cavity, be fixedly connected with rotary column, the downside of the 4th cavity between the inner wall of front and back in the 4th cavity What is be connected in inner wall is provided with the 5th cavity, is rotatably provided with reel in the 5th cavity, on the reel It is arranged with bracing wire, the surface that the other end of the bracing wire extends through rotary column in the 4th cavity, which extends, is passed through second sky Left end that is intracavitary and being fixedly connected on first sliding block, the reel are fixedly connected with first rotating shaft, the 5th cavity Inner left wall in be provided with the 6th cavity, the left end of the first rotating shaft, which extends, to be passed through in the 6th cavity and is fixedly connected There is first bevel gear, is provided with the second bevel gear being meshed with the first bevel gear in the 6th cavity, described second Bevel gear is fixedly connected with the second shaft, and what is be connected in the downside inner wall of the 6th cavity is provided with the 7th cavity, described The second sliding block is slidably provided in 7th cavity, second shaft is rotatably assorted by bearing is connected to second cunning On block, it is fixedly connected with second spring between the left end of second sliding block and the inner left wall of the 7th cavity, described The 8th cavity is provided in the downside inner wall of seven cavitys, what is be connected between the 7th cavity and the 8th cavity is provided with The lower end of 9th cavity, second shaft is passed through in the 8th cavity and is fixedly connected with by the 9th cavity extension The rack gear being meshed with the first gear is slidably arranged in the 8th cavity for first gear, the 8th cavity What is be connected in the inner wall of downside is provided with the tenth cavity that Open Side Down, be provided in the tenth cavity under the rack gear Hold the first fixed block for being fixedly connected, be provided with first in the right side inner wall of the 5th cavity and begin to speak, the 5th cavity with Described first begin to speak between be connected be provided with and second begin to speak, the right end of the first rotating shaft extends through described second and begins to speak Be passed through described first begin to speak in and be rotatably assorted and be connected on the right side inner wall that described first begins to speak by bearing, described first opens It is fixedly connected with ratchet in the intracavitary first rotating shaft, the ratchet left end is fixedly connected with the second fixed block, and described second It is provided with torque spring in beginning to speak, the third that is provided with being connected in the described second downside inner wall begun to speak is begun to speak, the third Begin to speak it is interior be slidably provided with third sliding block, the right end of the third sliding block be fixedly connected with can the third begin to speak it is interior on The Four-slider of lower slider, being provided with for being connected in the right side inner wall that the third is begun to speak the 4th are begun to speak, and the described 4th begins to speak Be fixedly connected with fixed column between interior front and back ability inner wall, the described 4th begin to speak in the fixed column on be rotatably provided with and turn Bar.

2. a kind of lock for windows according to claim 1, it is characterised in that: the locking device includes being set to the right window Opening in frame the 5th beginning to speak to the left, symmetrical in the described 5th upper and lower sides inner wall begun to speak and being provided with of being connected the 6th are opened Chamber, the described 6th begin to speak it is interior be slidably provided with the 5th sliding block, the 5th sliding block far from described 5th one end begun to speak with Described 6th begin to speak far from being fixedly connected with third spring between the described 5th side inner wall begun to speak, the described 6th begins to speak Being provided with for being connected in the inner wall of right side the 7th is begun to speak, and the described 7th, which begins to speak, interior is slidably provided with and the 5th sliding block The 6th sliding block that right end is fixedly connected, the symmetrical described 7th begin to speak between be connected be provided with and the 8th begin to speak, the described 8th Begin to speak it is interior be rotatably provided with cam, the cam is fixedly connected with third shaft, in the described 8th right side inner wall begun to speak The 9th is provided with to begin to speak, the right end extension of the third shaft is passed through in the 9th cavity and is fixedly connected with second gear, What is be connected in 9th upper inside walls begun to speak is provided with the first cunning chamber for opening forward, and first cunning is intracavitary slidably Be provided with the 7th sliding block, the lower end of the 7th sliding block is provided with the tooth-shape structure that can be meshed with the second gear, institute It states and is fixedly connected with the 4th spring between the rear end of the 7th sliding block and the rear side inner wall of the first sliding chamber.

3. a kind of lock for windows according to claim 1, it is characterised in that: the limiting device includes being set to of being connected The second cunning chamber in the described 4th right side inner wall begun to speak, second cunning is intracavitary to be slidably provided with the 8th sliding block, described The lower end of the upper end and the right side of the bull stick of 8th sliding block abuts against, symmetrical and phase in the left and right sides inner wall of the described second sliding chamber Connection is provided with third cunning chamber, and the third cunning is intracavitary to be slidably provided with the third being fixedly connected with the 8th sliding block Fixed block, what is be connected in the downside inner wall of first cavity is provided with the symmetrical 4th sliding chamber, and symmetrical described the What is be connected between four sliding chambers is provided with the 5th sliding chamber, the described 4th it is sliding it is intracavitary be slidably provided with the 9th sliding block, described the The upper end of nine sliding blocks is provided with bevel structure, and the 4th fixed block, the 9th sliding block are fixedly connected between the 9th sliding block Lower end and the 4th sliding chamber downside inner wall between be fixedly connected with the 5th spring, in the right side inner wall of the described 4th sliding chamber It is provided with the 6th cunning chamber being connected with first cavity, the 6th cunning is intracavitary to be slidably provided with the tenth sliding block, institute It states and is fixedly connected with the 6th spring between the lower end of the tenth sliding block and the downside inner wall of the 6th sliding chamber.

4. a kind of lock for windows according to claim 1, it is characterised in that: the right end of the torque spring is fixedly connected on institute It states on the second fixed block, the left end of the torque spring is fixedly connected on the rear side inner wall that described second begins to speak.