CN108386084B

CN108386084B - Safety lock and sliding door

Info

Publication number: CN108386084B
Application number: CN201810123728.1A
Authority: CN
Inventors: 白宝鲲
Original assignee: Guangdong Kinlong Hardware Products Co Ltd
Current assignee: Guangdong Kinlong Hardware Products Co Ltd
Priority date: 2018-02-07
Filing date: 2018-02-07
Publication date: 2020-06-16
Anticipated expiration: 2038-02-07
Also published as: CN108386084A

Abstract

The invention relates to a safety lock and a sliding door and window. The safety lock comprises a lock seat, a lock body, a lock tongue and a shifting block. Wherein the lock seat is provided with a first clamping position and a second clamping position along the push-pull direction of the sliding door and window. The lock body is positioned on one side of the lock seat, a sliding groove is arranged in the lock body, and a notch of the sliding groove faces the lock seat. The lock tongue is slidably inserted into the sliding groove and elastically connected with the lock body, so that the lock tongue can move in a telescopic manner relative to the lock base. When the lock tongue extends to the first clamping position along the sliding groove, the lock tongue is matched with the first clamping position; when the spring bolt extends to the second position along the sliding groove, the spring bolt is matched with the second position. The shifting block is connected to the lock tongue and can move along the telescopic motion direction of the lock tongue relative to the lock body so as to drive the lock tongue to move telescopically relative to the lock base along the sliding groove. Therefore, the sliding door and window using the safety lock can be used more safely.

Description

Safety lock and sliding door

Technical Field

The invention relates to the technical field of sliding doors and windows, in particular to a safety lock and a sliding door and window.

Background

In daily life, the sliding door and window is widely applied due to the advantages of low cost, convenient use and the like. Usually, the sliding door only has two modes of locking and opening, and when the sliding door is opened for ventilation, the opening degree of the sliding door can be adjusted at will, so that events such as falling objects easily occur, and high potential safety hazards exist.

Disclosure of Invention

Aiming at the problem that the sliding door and window is unsafe to use, the sliding door and window and the safety lock are provided.

A safety lock for a sliding door or window, the safety lock comprising:

the lock seat is provided with a first clamping position and a second clamping position along the push-pull direction of the sliding door and window;

the lock body is positioned on one side of the lock seat, a sliding groove is arranged in the lock body, and a notch of the sliding groove faces the lock seat;

the lock body is provided with a sliding groove, the lock body is provided with a lock seat, the lock seat is provided with a first clamping position, the lock body is provided with a lock tongue, the lock tongue is slidably inserted in the sliding groove and is elastically connected with the lock body so that the lock tongue can move telescopically relative to the lock seat, and when the lock tongue extends to the first clamping position along the sliding groove, the lock tongue is matched with the first clamping position; when the lock tongue extends to the second clamping position along the sliding groove, the lock tongue is matched with the second clamping position;

the shifting block is connected to the lock tongue and can move along the telescopic motion direction of the lock tongue relative to the lock body so as to drive the lock tongue to move along the sliding groove relative to the lock seat in a telescopic mode.

In one embodiment, the lock body is provided with a sliding opening communicated with the sliding groove, the shifting block penetrates through the sliding opening and is detachably connected with the lock tongue, and the shifting block can slide along the sliding opening.

In an embodiment, a slot opposite to the sliding opening is formed in the lock tongue, a buckling part facing the lock tongue is arranged on the shifting block, and the buckling part is matched with the slot.

In one embodiment, the first clamping position includes a first clamping groove, the second clamping position includes a second clamping groove, and when the lock tongue is opposite to the first clamping groove, the lock tongue can movably penetrate into or withdraw from the first clamping groove; when the lock tongue is opposite to the second clamping groove, the lock tongue can movably penetrate into or withdraw from the second clamping groove.

In an embodiment, the lock base is provided with a connecting groove, the connecting groove is located between the first clamping groove and the second clamping groove and is communicated with the first clamping groove and the second clamping groove, the lock tongue comprises a tongue main body part and a sliding block part, the sliding block part is convexly arranged on one side of the tongue main body part facing the lock base, the sliding block part can slide along the connecting groove, the tongue main body part can be arranged in the first clamping groove or the second clamping groove in a penetrating manner, and the width of the tongue main body part is greater than that of the connecting groove;

in an embodiment, a stroke control device is disposed on the lock body for controlling a sliding stroke of the lock tongue along the sliding groove, the stroke control device has a first control state and a second control state, and when the stroke control device is in the first control state, only the tongue body portion can slide away from the first slot or the second slot along the sliding groove; when the stroke control device is in the second control state, both the tongue main body part and the slider part can slide away from the first slot or the second slot along the sliding groove.

In an embodiment, a movable hole is disposed on a bottom wall of the sliding groove, a first limiting groove is disposed on an inner wall of the movable hole along a circumferential direction, the stroke control device includes a control rod and a limiting member connected to the control rod, the control rod is slidably disposed in the movable hole and can rotate relative to the lock body, the limiting member can be limited in the first limiting groove, and the limiting member can move into the sliding groove along the movable hole, wherein when the limiting member rotates with the control rod in the sliding groove by a certain angle, the limiting member abuts against the bottom wall of the sliding groove to limit the control rod in the sliding groove.

In an embodiment, the control rod is provided with a positioning groove, and the limiting member includes a snap spring matched with the positioning groove.

In one embodiment, an operating portion is disposed at an end of the control rod extending out of the lock body, so that the control rod and the limiting member rotate by a certain angle.

In an embodiment, the lock tongue is provided with a second limiting groove opposite to the movable hole, an elastic member is sleeved on one end of the control rod close to the lock tongue, and when the control rod moves relative to the lock tongue, the control rod can extend into the second limiting groove and compress the elastic member.

In one embodiment, a guide inclined surface is arranged at one end of the lock tongue close to the lock seat.

A sliding door comprising a safety lock as described above.

The safety lock comprises a lock seat, a lock body, a lock tongue and a shifting block. The lock seat is provided with a first clamping position and a second clamping position along the push-pull direction of the sliding door and window, the spring bolt is inserted into the sliding groove of the lock body and is elastically connected with the lock body, so that the spring bolt can move telescopically relative to the lock seat, and the shifting block can shift the sliding block along the sliding groove. Furthermore, when the sliding door with the safety lock is in a closed state, the spring bolt extends to the first clamping position under the action of elastic force and is matched with the first clamping position, so that the safety lock is in a locking state, and the sliding door is locked in the closed state. When the sliding door or window needs to be opened, the poking block is poked to enable the spring bolt to be disengaged from the first clamping position, the sliding door or window is opened, and the spring bolt is driven to move towards the second clamping position. When the spring bolt moves to the second clamping position, the pulling block is loosened, the spring bolt is matched with the second clamping position to enable the safety lock to be in a locking state, and at the moment, the safety lock locks the sliding door and window in a ventilation state, so that the sliding door and window cannot be further opened. The sliding door and window with the safety lock is used, so that accidents such as falling and falling of objects at the sliding door and window can be effectively avoided while ventilation is guaranteed, and the sliding door and window is more convenient and safer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a security lock according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the lock body of the security lock shown in FIG. 1;

FIG. 3 is a cross-sectional view of the lock body of the security lock shown in FIG. 1;

FIG. 4 is a cross-sectional view of the control rod of the security lock of FIG. 1 in a first control state;

FIG. 5 is a cross-sectional view of the control rod of the security lock of FIG. 1 in a second control state;

FIG. 6 is a cross-sectional view of the locking bolt of the security lock of FIG. 5 in a first position mated with the first card slot;

FIG. 7 is an enlarged view taken at A in FIG. 6;

FIG. 8 is a cross-sectional view of the locking bolt of the security lock of FIG. 5 in a second position engaging the first slot;

FIG. 9 is an enlarged view at B shown in FIG. 8;

FIG. 10 is a cross-sectional view of the locking bolt of the security lock of FIG. 5 in a first position mated with the second card slot;

FIG. 11 is an enlarged view at C shown in FIG. 10;

FIG. 12 is a cross-sectional view of the locking bolt of the security lock shown in FIG. 5 in a third position;

fig. 13 is an enlarged view at D shown in fig. 12.

The safety lock 10 lock seat 100 first lock groove 110 second lock groove 120 connecting groove 130 positioning rib 140 lock body 200 sliding groove 210 bottom wall 211 sliding opening 220 movable hole 230 first limiting groove 240 locking tongue 300 tongue body part 310 slot 311 second limiting groove 312 sliding block part 320 guiding inclined surface 330 shifting block 400 locking part 410 control rod 500 rod end part 510 rod body part 520 positioning groove 521 operating part 530 spring 610 clamp spring 620 front window 20 rear window 30 window frame 40

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The application discloses sliding door, this sliding door includes the safety lock. As shown in fig. 1, 6 and 7, the sliding door includes a front window 20, a rear window 30, and a window frame 40, wherein the front window 20 and the rear window 30 are mounted on the window frame 40, and the front window 20 and the rear window 30 are relatively slidable to open or close the sliding door. For convenience of description, in the present embodiment, the rear window 30 is slidable, the front window 20 is fixed, and the rear window 30 is slid rightward to open the sliding door and slid leftward to close the sliding door. The sliding door and window has three states of closing, ventilation and full open, and the ventilation state is in the state between closed condition and the full open state, and when the sliding door and window was in the ventilation state, the sliding door and window was in the state of incompletely opening this moment. The ventilation state in this embodiment refers to a state when the sliding door or window is opened to a preset opening degree.

The security lock 10 includes a lock receptacle 100, a lock body 200, a locking bolt 300, and a thumb block 400. The lock base 100 is provided with a first locking position and a second locking position along the sliding direction of the sliding door. The lock body 200 is located at one side of the lock seat 100, and a sliding slot 210 is formed in the lock body 200, and a notch of the sliding slot 210 faces the lock seat 100. The latch tongue 300 is slidably inserted into the sliding groove 210, and the latch tongue 300 is elastically connected to the lock body 200, so that the latch tongue 300 can move telescopically with respect to the lock base 100. When the bolt 300 extends to the first position along the sliding groove 210, the bolt 300 is engaged with the first position; when the latch 300 extends to the second position along the sliding slot 210, the latch 300 is engaged with the second position. The shifting block 400 is connected to the latch tongue 300 and can move along the direction of the retractable movement of the latch tongue 300 relative to the lock body 200, so as to drive the latch tongue 300 to move along the sliding groove 210 relative to the lock base 100.

Specifically, the sliding direction of the sliding door is the left-right direction, the lock base 100 is installed on the front window 20, and the lock body 200 is installed on the rear window 30. The lock seat 100 is disposed in a plate shape, and the second position is disposed at the right side of the first position. The lock body 200 is located at the rear side of the lock holder 100, and the lock body 200 is provided with a sliding slot 210 extending in the front-rear direction, and a notch of the sliding slot 210 faces forward. The latch tongue 300 is inserted into the slide groove 210, and the latch tongue 300 is elastically connected to the lock body 200, so that the latch tongue 300 can be extended and retracted in the front and rear directions, i.e., can be moved relative to the lock base 100. When the sliding door is in the closed state, the locking tongue 300 extends to the first position of the lock base 100 and is matched with the first position, so that the lock base 100 and the lock body 200 are relatively fixed, and at this time, the safety lock 10 is in the locked state, so as to lock the sliding door in the closed state. When the sliding door or window needs to be opened, the shifting block 400 is shifted backwards to drive the lock tongue 300 to slide backwards, so that the lock tongue 300 is disengaged from the first clamping position, and the rear window 30 can slide rightwards. Pushing the rear window 30 to the right, the lock body 200 and the latch tongue 300 are also moved to the right together with the rear window 30. When the latch 300 moves to the rear of the second position, the moving block 400 is released, the latch 300 moves toward the lock base 100 under the action of elastic force, and when the latch 300 extends to the second position, the latch 300 is engaged with the second position, so that the safety lock 10 is in the locking state. At this time, the sliding door is in a ventilation state, and the sliding door is locked in the ventilation state through the matching of the lock tongue 300 and the second clamping position.

It can be understood that, when the sliding door and the sliding window are locked in the ventilation state, the opening degree of the sliding door and the sliding window is in direct proportion to the distance between the first clamping position and the second clamping position, and when the distance between the first clamping position and the second clamping position is larger, the opening degree of the sliding door and the sliding window in the ventilation state is correspondingly larger; when the distance between the first clamping position and the second clamping position is smaller, the opening degree of the sliding door and the sliding window in the ventilation state is correspondingly smaller. When the sliding door needs to be completely opened, the shifting block 400 is shifted backwards, so that the lock tongue 300 is disengaged from the second clamping position, and the rear window 30 can slide rightwards until the sliding door is completely opened, so that the sliding door is in a completely opened state. It can be understood that the lock base 100 can further be provided with a third detent, and when the sliding door is fully opened, the latch 300 can cooperate with the third detent to lock the sliding door in the fully opened state. And a fourth clamping position, a fifth clamping position and the like can be arranged between the second clamping position and the third clamping position, so that the sliding door and the sliding window have a plurality of ventilation states.

Through the cooperation of the latch tongue 300 and the second position, the safety lock 10 can lock the sliding door in a ventilation state, so that the sliding door is kept open to a preset degree for ventilation, and the front window 20 and the rear window 30 are kept relatively fixed, thereby preventing the sliding door from being further opened. Therefore, by using the sliding door and window, the accidents of falling, falling and the like can be effectively avoided at the sliding door and window while the ventilation is ensured, and the use is more convenient and safer.

As shown in fig. 3 and 4, the lock body 200 is provided with a sliding opening 220 communicated with the sliding groove 210, the dial 400 is inserted into the sliding opening 220 and detachably connected to the latch 300, and the dial 400 can slide along the sliding opening 220. In the present embodiment, the sliding opening 220 is located on the right side wall of the lock body 200, and the dial 400 can move up and down along the sliding opening 220. When the installation is carried out, the locking tongue 300 is firstly inserted into the sliding groove 210, and then the shifting block 400 is installed on the locking tongue 300 from the sliding opening 220.

In one embodiment, the latch tongue 300 is snap-fit to the pusher 400. The lock tongue 300 is provided with a slot 311 opposite to the sliding opening 220, the dial 400 is provided with a buckling part 410 facing the lock tongue 300, and the buckling part 410 is matched with the slot 311, so that the dial 400 is connected to the lock tongue 300. The mode is firm in connection and convenient to install.

In other alternative embodiments, the dial 400 and the latch 300 may be screwed, inserted, etc.

The first clip comprises a first clip groove 110, the second clip comprises a second clip groove 120, and when the bolt 300 is opposite to the first clip groove 110, the bolt 300 can movably penetrate into or withdraw from the first clip groove 110; when the latch tongue 300 is opposite to the second card slot 120, the latch tongue 300 can movably penetrate into or withdraw from the second card slot 120. The lock tongue 300 is inserted into the first clamping groove 110 to realize the locking of the safety lock 10, and at the moment, the sliding door and the sliding window are in a closed state; the bolt 300 is inserted into the second slot 120 to lock the safety lock 10, and the sliding door and window are in a ventilation state.

In other alternative embodiments, the second detent may include a stop, and the insertion of the latch 300 between the stops may also limit the movement of the rear window 30. The left edge of the first engaging groove 110 is provided with a positioning rib 140, so that the lock base 100 can be accurately mounted on the front window 20, and the assembly precision of the sliding door or window is improved.

As shown in fig. 1, 4 and 5, the lock base 100 is provided with a connection groove 130, the connection groove 130 is located between the first card slot 110 and the second card slot 120, and the connection groove 130 is communicated with the first card slot 110 and the second card slot 120. In this embodiment, the locking tongue 300 includes a tongue main body portion 310 and a sliding block portion 320, the sliding block portion 320 is protruded from a side of the tongue main body portion 310 facing the lock base 100, the sliding block portion 320 can slide along the connecting groove 130, the tongue main body portion 310 can be inserted into the first card groove 110 or the second card groove 120, and a width of the tongue main body portion 310 is greater than a width of the connecting groove 130.

Through the above arrangement, the latch 300 moves backward for a certain distance along the sliding slot 210, so that the sliding block portion 320 is inserted into the first slot 110, the latch main body portion 310 is withdrawn from the first slot 110, the rear window 30 is pushed to slide rightward, the sliding block portion 320 moves into the second slot 120 along the connecting slot 130, and the sliding block portion 320 cooperates with the second slot 120 to limit the rear window 30 to move rightward continuously. Through the guide effect of above-mentioned connecting groove 130, just can be very accurate switch the sliding door from closed state to the ventilation state.

As shown in fig. 1, 4 and 5, the lock body 200 is provided with a stroke control device for controlling the sliding stroke of the lock tongue 300 along the sliding slot 210, the stroke control device has a first control state and a second control state, and when the stroke control device is in the first control state, only the tongue body portion 310 can slide away from the first slot 110 or the second slot 120 along the sliding slot 210; when the stroke control device is in the second control state, both the tongue body portion 310 and the slider portion 320 can slide away from the first slot 110 or the second slot 120 along the sliding slot 210.

It can be understood that the tongue body portion 310 cannot slide along the connecting slot 130, and the width of the connecting slot 130 is smaller than the width of the first slot 110 and the second slot 120, so that the locking tongue 300 can cooperate with the first slot 110 or the second slot 120 to lock the security lock 10. Specifically, the latch tongue 300 has a first position, a second position, and a third position, and the latch tongue 300 can sequentially slide backward from the first position to the second position, and then slide backward to the third position. As shown in fig. 6, 7, 10 and 11, the latch tongue 300 is in a first position; as shown in fig. 8 and 9, the latch tongue 300 is in the second position; as shown in fig. 12 and 13, the latch tongue 300 is in the third position.

The safety lock structure will be described below by taking the closed state of the sliding door and window as an example.

When the locking tongue 300 is located at the first position, the tongue body 310 is inserted into the first engaging groove 110, the sliding block 320 is located in front of the lock base 100, the tongue body 310 is inserted into the first engaging groove 110, and the security lock 10 is in the locking state. When the latch tongue 300 is located at the second position, relative to the first position, the latch tongue 300 moves backward for a certain distance, the slider portion 320 is inserted into the first slot 110, and the tongue body portion 310 is located behind the first slot 110. The rear window 30 can drive the sliding block portion 320 to slide from the first slot 110 to the second slot 120 along the connecting slot 130, at this time, the sliding block portion 320 is inserted into the second slot 120, and the tongue body portion 310 is located behind the second slot 120. Due to the limiting effect between the slider part 320 and the first and second engaging

grooves

110 and 120, the rear window 30 can only drive the slider part 320 to slide between the first and second engaging

grooves

110 and 120, that is, the sliding door can only be changed between the closed state and the ventilation state, and at this time, the sliding door can only be opened to the preset opening degree in the ventilation state at most. When the latch tongue 300 is located at the third position, the latch tongue 300 is located behind the lock base 100, and the safety lock 10 is in the fully released state, so that the sliding door and window can be changed from the closed state to the fully opened state.

When the travel control is in the first control state, the latch tongue 300 is only slidable between the first position and the second position. When the latch 300 slides backward from the first position to the second position, the latch body 310 moves to the rear of the first slot 110, and at this time, the latch body 310 slides away from the first slot 110, and the slider 320 is inserted into the first slot 110, so that only the latch body 310 slides away from the first slot 110 along the sliding slot 210 in the front-rear direction. The rear window 30 is pushed to move rightwards, the sliding block part 320 moves to the second clamping groove 120 along the connecting groove 130, and at the moment, the sliding block part 320 penetrates through the second clamping groove 120 to limit the sliding door and window to further move rightwards. Then the bolt 300 slides forward from the second position to the first position, and at this time, the bolt 300 passes through the second engaging groove 120, and locks the sliding door and window in a ventilation state. When the sliding door is in a ventilation state, the sliding door can be in a closed state by sliding the lock tongue 300 and pushing the rear window 30 leftwards. Therefore, when the stroke control device is in the first control state, the lock tongue 300 can only slide between the first position and the second position, and further the sliding door and window can only change between the closing state and the ventilation state, so that the maximum opening degree of the sliding door and window cannot exceed the opening degree of the sliding door and window in the ventilation state, the sliding door and window are in a safety state, and potential safety hazards caused by the fact that the sliding door and window is greatly opened by misoperation of a user are effectively avoided. For example, when the sliding door is in a safe state, children can be prevented from opening the sliding door to a large extent.

When the stroke control device is in the second control state, the latch 300 can slide between the first position and the third position, so that the sliding door and the sliding window can be changed between the closed state, the ventilation state and the full-open state, and the sliding door and the sliding window can be opened to any degree.

As shown in fig. 1 to 5, a movable hole 230 is formed on the bottom wall 211 of the sliding slot 210, and a first limiting groove 240 is formed in the movable hole 230 along the circumferential direction. The stroke control device comprises a control rod 500 and a limiting member connected to the control rod 500, wherein the control rod 500 is slidably disposed through the movable hole 230 and can rotate relative to the lock body 200. The limiting member can be located in the first limiting groove 240, and the limiting member can move into the sliding groove 240 along the movable hole 230, wherein the limiting member can rotate with the control rod 500 for a certain angle in the sliding groove 240 to abut against the bottom wall 211 of the sliding groove 240.

A movable hole 230 extending in the front-rear direction is formed in the bottom wall 211 of the slide groove 210, and the control rod 500 is inserted into the movable hole 230, and can slide in the front-rear direction in the movable hole 230, and the control rod 500 can rotate in the movable hole 230. The first position-limiting groove 240 is located between two openings of the movable hole 230, a portion of the movable hole 230 between the first position-limiting groove 240 and the sliding slot 210 is substantially elliptical, and the position-limiting member can rotate to a specific angle to be matched with the portion of the movable hole 230, so that the position-limiting member can pass through the portion of the movable hole 230, that is, the position-limiting member can move between the sliding slot 210 and the first position-limiting groove 240. For convenience of description, an aligned state and a staggered state are defined herein, and when the position-limiting element is aligned with the partial movable hole 230, the position-limiting element can pass through the partial movable hole 230; when the position limiting member is in a staggered state with the partial movable hole 230, the position limiting member cannot pass through the partial movable hole 230. When the limiting member is located in the sliding slot 210, at this time, the limiting member is in a staggered state relative to the movable hole 230, the limiting member abuts against the bottom wall 211 of the sliding slot 210, and the control rod 500 is limited from further moving backwards.

The bolt 300 slides backwards to the second position, and the front end of the control rod 500 abuts against the bolt 300, so that after the bolt 300 slides backwards to the second position, the control rod 500 limits the bolt 300 to slide further backwards, and further the bolt 300 can only slide between the first position and the second position, and at this time, the stroke control device is in the first control state. The control rod 500 is rotated to make the position-limiting member aligned with the part of the movable hole 230, and then the control rod 500 is moved backward to make the position-limiting member enter the first position-limiting groove 240 along the movable hole 230, so as to be limited in the first position-limiting groove 240, and the control rod 500 cannot move backward. The latch tongue 300 can then slide backwards to a third position, with the travel control device in a second control state.

As shown in fig. 1, a positioning groove 521 is annularly disposed on the control rod 500, and the limiting member includes a snap spring 620 engaged with the positioning groove 521. The clamp spring 620 is arranged in a sheet shape and is provided with a U-shaped opening, and the clamp spring 620 is clamped with the control rod 500 through the U-shaped opening. The limiting member may be a rubber block, a rubber ring, or the like. The clamp spring 620 is in interference fit with a part of the movable hole 230 between the first limiting groove 240 and the sliding groove 210.

As shown in fig. 1 to 5, an operation portion 530 is disposed at an end of the control rod 500 extending out of the lock body 200, so that the control rod 500 and the position-limiting member rotate at a certain angle. The control lever 500 has a lever end 510, a lever body 520, and an operating part 530, the lever body 520 is located between the lever end 510 and the operating part 530, the lever end 510 is located at the front end of the control lever 500, and the operating part 530 is located at the rear end of the control lever 500. The operation part 530 is provided in a shape that facilitates finger pinching, facilitating a user to push or pull the lever 500. The lever 500 can be moved forward or backward by pushing the operating part 530, and the lever 500 can be rotated at a certain angle by rotating the operating part 530. When the control lever 500 is at the first preset position, the latch 300 slides backwards to the second position, the front end of the control lever 500 abuts against the latch 300, so that the latch 300 cannot slide backwards any more, and at this time, the stroke control device is in the first control state. The operation portion 530 is rotated by a certain angle to align the position-limiting member with the movable hole 230, the control rod is under the elastic force of the elastic member, the control rod 500 moves backward to the second predetermined position, at this time, the latch 300 can slide backward to the third position, and the stroke control device is in the second control state. When the latch tongue 300 is located at the third position, the latch tongue 300 may or may not abut against the control lever 500 as long as the latch tongue 300 can slide to the third position. Wherein, a mark can be arranged on the control rod 500 for marking a first preset position and a second preset position on the control rod 500.

As shown in fig. 1 to 5, the locking tongue 300 is provided with a second limiting groove 312 opposite to the movable hole 230, an elastic member is sleeved on one end of the control rod 500 close to the locking tongue 300, and when the control rod 500 moves relative to the locking tongue 300, the control rod 500 can extend into the second limiting groove 312 and compress the elastic member. The resilient member is a spring 610 in this embodiment, but may be a rubber sleeve or the like in alternative embodiments. Wherein the rod end portion 510 has a diameter smaller than the rod body portion 520. The positioning groove 521 is disposed on the rod body 520, and the spring 610 is sleeved on the rod end 510. The front end of the spring 610 abuts against the bottom wall of the second limiting groove 312, and the rear end of the spring 610 abuts against the joint between the rod end portion 510 and the rod main body portion 520. When the latch bolt 300 is located at the first position, the second position or the third position, the spring 610 is in a compressed state, so that the latch bolt 300 is elastically connected with the lock body 200, and the latch bolt 300 can be prevented from shaking in the sliding groove 210.

In other alternative embodiments, the spring 610 may be disposed between the latch tongue 300 and the bottom wall 211 of the sliding groove 210, and the elastic connection between the latch tongue 300 and the lock body 200 may also be achieved.

As shown in fig. 1, 6 and 7, the end of the latch tongue 300 close to the lock base 100 is provided with a guide slope 330. Wherein the guide slope 330 is located at the left side of the front end of the latch tongue 300, when the rear window 30 moves to the left, i.e., when the rear window 30 is closed, the guide slope 330 may abut against the lock holder 100. Thus, when the rear window 30 is pushed to the left, the lock base 100 can press the latch 300 backward along the guide inclined plane 330, so that the dial 400 does not need to be pushed backward, the rear window 30 can move to the left smoothly, and the use is more convenient.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A safety lock for a sliding door or window, the safety lock comprising:

the lock seat is provided with a first clamping position and a second clamping position along the push-pull direction of the sliding door, the lock seat is provided with a connecting groove, the connecting groove is positioned between the first clamping position and the second clamping position, and the connecting groove is communicated with the first clamping position and the second clamping position;

the lock body is provided with a sliding groove, the lock body is provided with a lock seat, the lock seat is provided with a first clamping position, the lock body is provided with a lock tongue, the lock tongue is slidably inserted in the sliding groove and is elastically connected with the lock body so that the lock tongue can move telescopically relative to the lock seat, and when the lock tongue extends to the first clamping position along the sliding groove, the lock tongue is matched with the first clamping position; when the lock tongue extends to the second clamping position along the sliding groove, the lock tongue is matched with the second clamping position; the lock tongue can slide to the second clamping position from the first clamping position through the connecting groove; and

2. The safety lock according to claim 1, wherein said lock body is provided with a sliding opening communicating with said sliding groove, said shifting block is inserted into said sliding opening and detachably connected with said lock tongue, and said shifting block can slide along said sliding opening.

3. The safety lock according to claim 2, wherein a slot opposite to said sliding port is formed in said lock tongue, and a fastening portion facing said lock tongue is formed in said dial block, and said fastening portion is engaged with said slot.

4. The security lock of claim 1, wherein said first detent comprises a first catch slot and said second detent comprises a second catch slot, said locking bolt being movable into and out of said first catch slot when said locking bolt is opposite said first catch slot; when the lock tongue is opposite to the second clamping groove, the lock tongue can movably penetrate into or withdraw from the second clamping groove.

5. The safety lock according to claim 4, wherein said locking bolt comprises a bolt main body portion and a sliding block portion, said sliding block portion is convexly disposed on a side of said bolt main body portion facing said lock base, said sliding block portion is slidable along said connecting groove, said bolt main body portion is disposed in said first or second locking groove, and a width of said bolt main body portion is greater than a width of said connecting groove.

6. The safety lock according to claim 5, wherein said lock body is provided with a travel control means for controlling a sliding travel of said bolt along said sliding slot, said travel control means having a first control state and a second control state, and when said travel control means is in said first control state, only said bolt body portion is slidable along said sliding slot away from said first engaging groove or said second engaging groove; when the stroke control device is in the second control state, both the tongue main body part and the slider part can slide away from the first slot or the second slot along the sliding groove.

7. The safety lock according to claim 6, wherein a movable hole is formed in a bottom wall of the sliding groove, a first limiting groove is circumferentially formed in an inner wall of the movable hole, the stroke control device includes a control rod and a limiting member connected to the control rod, the control rod is slidably inserted into the movable hole and is capable of rotating relative to the lock body, the limiting member is capable of being limited in the first limiting groove, and the limiting member is capable of moving into the sliding groove along the movable hole, wherein when the limiting member rotates with the control rod at a certain angle in the sliding groove, the limiting member abuts against the bottom wall of the sliding groove to limit the control rod in the sliding groove.

8. A safety lock according to claim 7, wherein said control rod is fitted with a detent, and said stop member comprises a snap spring cooperating with said detent.

9. A safety lock according to claim 7, wherein said control rod is provided with an operating portion at an end thereof extending out of said lock body, for allowing said control rod to rotate at an angle relative to said retainer.

10. The safety lock according to any of claims 7 to 9, wherein said bolt is provided with a second limit groove opposite to said movable hole, an elastic member is sleeved on an end of said control rod close to said bolt, and when said control rod moves relative to said bolt, said control rod can extend into said second limit groove and compress said elastic member.

11. A safety lock according to claim 1, wherein said bolt is provided with a guide ramp at an end thereof adjacent said lock receptacle.

12. Sliding door characterised in that it comprises a safety lock according to any of claims 1 to 11.