CN219826482U - Automatic locking device and window - Google Patents

Abstract

The utility model relates to an automatic locking device, which comprises a lock seat and a lock tongue which is slidably arranged on the lock seat in an elastic resetting manner, wherein a lock point pushes a guide surface of the lock tongue to enable the lock tongue to slide relative to the lock seat until the lock point passes over the guide surface, the lock tongue is elastically reset and locked by a clamping surface, the automatic locking device also comprises an assisting block which is slidably arranged on the lock tongue along the moving direction of the lock point, the assisting block is provided with a first assisting surface and a second assisting surface, the first assisting surface is positioned below the outer side of the guide surface to be abutted with the lock point in the locking process of the lock point which moves downwards, the second assisting surface pushes the first assisting surface to be abutted with a fulcrum fixed on the lock seat in the sliding process of the assisting block, and simultaneously pushes the lock tongue to slide downwards until the lock point enters the guide surface, and the second assisting surface is abutted with the fulcrum again in the elastic resetting process of the lock point after the lock point passes over the guide surface, so that the assisting block is reversely slid and reset. The automatic locking device can also automatically lock the locking point normally when the locking point moves downwards.

Description

Automatic locking device and window

Technical Field

The present utility model relates to a window locking structure, and more particularly, to an automatic locking device and a window equipped with the same.

Background

The window is composed of a window frame and a window sash, and a handle is generally required to be manually operated to drive a locking point on the window sash to be locked into a locking mechanism matched with the window frame to lock the window sash. In order to cope with dangerous situations such as strong wind, fire and the like, an automatic locking mechanism is designed by people, so that the window sashes can be automatically locked in an unmanned state. The existing automatic locking mechanism for windows generally adopts a locking principle that a locking point pushes against a guide surface of a lock tongue to enable the lock tongue to slide and avoid and then elastically reset to lock a locking point lock catch. However, due to the influence factors of machining errors, window sash deformation, installation errors and the like, window sashes fall off angles or fall down, and the positions of lock points on window sash transmission rods also move downwards along with the falling of the window sashes. The downward movement of the lock point position can cause the lock point to be staggered with the guide surface of the normal matched lock tongue, and automatic locking cannot be realized.

Disclosure of Invention

The utility model aims to solve the technical problem that the automatic locking cannot be realized due to the fact that the locking point moves downwards due to falling angle of a window sash in the prior art, and provides an automatic locking device capable of preventing the locking point from moving downwards to be invalid and a window provided with the automatic locking device.

The utility model provides an automatic locking device for locking an external locking point in a first aspect, which comprises a locking seat and a locking tongue slidably mounted on the locking seat in an elastic resetting manner, wherein an inclined guide surface and a buckling surface opposite to the guide surface are arranged on the locking tongue; the automatic locking device further comprises a power-assisted block which is slidably arranged on the lock tongue along the moving direction of the lock point, the power-assisted block is provided with a first power-assisted surface and a second power-assisted surface, the first power-assisted surface is positioned below the outer side of the guide surface to be abutted with the lock point in the locking process of the lock point which moves downwards, the second power-assisted surface is abutted with a supporting point fixedly arranged on the lock seat in the sliding process of pushing the first power-assisted surface by the lock point to enable the power-assisted block to slide downwards until the lock point enters the guide surface, and the second power-assisted surface is abutted with the supporting point again in the elastic reset process of the lock tongue after the lock point passes over the guide surface to enable the power-assisted block to slide reversely and reset.

In an embodiment of the automatic locking device according to the first aspect of the present utility model, the lock tongue is provided with a guide groove extending along the moving direction of the lock point, and the power assisting block is provided with a guide sliding block and is placed in the guide groove through the guide sliding block to slide along the guide groove.

According to an embodiment of the automatic locking device of the first aspect of the present utility model, at least one sliding groove extending up and down is provided on the lock base, at least one sliding block matched with the at least one sliding groove is protruding on a surface of the lock tongue opposite to the lock base and is slidably inserted into the at least one sliding groove, and a lock cover covering the lock tongue to limit the sliding block of the lock tongue from being separated from the sliding groove is further fixedly provided on the lock base.

In an embodiment of the automatic locking device according to the first aspect of the present utility model, at least one first elastic member abuts between a lower end of the locking bolt in a sliding direction and a lower end of the locking cover, and the locking bolt is pushed by the locking point to slide downward so as to deform the first elastic member.

According to an embodiment of the automatic locking device of the first aspect of the present utility model, the lock cover is fixedly connected to the lock base through a first rivet and a second rivet respectively disposed at the upper end and the lower end of the sliding direction of the lock tongue, and when the lock tongue is elastically reset to the end of the sliding stroke, the upper end of the lock tongue abuts against the first rivet.

In an embodiment of the automatic locking device according to the first aspect of the present utility model, the second booster surface of the booster block abuts against the outer periphery of the first rivet during the process of pushing the first booster surface by the lock point to cause the booster block to slide, and the first rivet is used as a fulcrum to cause the lock tongue to slide downward.

In an embodiment of the automatic locking device according to the first aspect of the present utility model, the lock base is further provided with a blocking wall that is aligned with the locking surface of the lock tongue, and the locking point is driven to move upwards along the locking surface of the lock tongue to be locked by the blocking wall after being separated from the locking surface.

According to an embodiment of the automatic locking device of the first aspect of the present utility model, the automatic locking device further includes an unlocking lever rotatably mounted on the lock tongue in an elastically resettable manner, the unlocking lever has a first acting surface and a second acting surface, the first acting surface abuts against the lock point in the process that the lock point pushes against the guide surface to lock into the buckle surface, the unlocking lever is pushed against by the lock point to rotate to avoid the lock point, the second acting surface abuts against the lock point in the process that the lock point is driven to move downwards until the lock point is separated from the lock of the blocking wall when the unlocking lever rotates to reset to be right below the lock point after the lock point is driven to move upwards.

In an embodiment of the automatic locking device according to the first aspect of the present utility model, the lock tongue is provided with a mounting cylinder in a protruding manner, and the unlocking lever is provided with a mounting hole and is sleeved on the mounting cylinder through the mounting hole; the mounting cylinder is also sleeved with a torsion spring, and two ends of the torsion spring respectively prop against the unlocking rod and the lock tongue to deform when the unlocking rod is pushed by the locking point to rotate.

The present utility model proposes in a second aspect to solve its technical problem a window comprising a frame and a sash, one of which is fitted with a lock point and the other of which is fitted with an automatic locking device as described above.

The automatic locking device and the window have the following beneficial effects: according to the automatic locking device disclosed by the embodiment of the utility model, the sliding-mounted power assisting block is additionally arranged on the lock tongue, the first power assisting surface of the power assisting block, which is positioned below the outer side of the guide surface of the lock tongue, is abutted with the lock point which is shifted downwards, so that the power assisting block slides along the moving direction of the lock point, and further, the second power assisting surface of the power assisting block is abutted with the fulcrum fixed on the lock seat, so that the lock tongue is driven to slide downwards, and the lock point is guided to enter the guide surface which is normally matched, so that the automatic locking is realized. Therefore, the automatic locking device can enable the lock point to be normally and automatically locked even under the condition that the lock point moves downwards due to falling angle or falling of the window sash, and the safety performance of the window and the experience of clients are improved. Moreover, the anti-lock point downward-moving failure structure of the automatic locking device is simple and practical, and the installation is convenient.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of an automatic locking device according to an embodiment of the present utility model mated with an external locking mechanism;

FIG. 2 is an exploded view of the automatic locking device of FIG. 1;

FIG. 3 is a rear view of the automatic locking device shown in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a front view of the automatic locking device of FIG. 1 with the locking cap removed;

FIG. 6 is a schematic diagram of the process of the automatic locking device shown in FIG. 1 in normal cooperation with a locking point to achieve automatic locking;

FIG. 7 is a schematic illustration of the automatic locking device of FIG. 1 in cooperation with a downshifting lock point to effect automatic locking;

FIG. 8 is a schematic view of the structure of the automatic locking device shown in FIG. 1 for normally locking the lock point to be driven upward;

FIG. 9 is a schematic illustration of the process of unlocking a lock point of the automatic locking device of FIG. 1 that is actuated to move downward;

fig. 10 is a schematic view of a structure in which a window is in a window sash-locked state according to an embodiment of the present utility model;

fig. 11 is a schematic view of the structure of the window shown in fig. 10 in a window sash open state.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. Moreover, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

Fig. 1 shows a schematic structural view of an automatic locking device 100 according to an embodiment of the present utility model, which is engaged with an external locking mechanism 200. The latch mechanism 200 has a drive rod 220 and a latch point 210 secured to the drive rod 220, the latch point 210 being automatically lockable into the automatic locking device 100 along a locking path in a horizontal direction of movement indicated by an arrow in fig. 1. The driving rod 220 is driven by external force to drive the lock point 210 to move up and down in the up and down moving direction perpendicular to the horizontal moving direction. The latch mechanism 200 is implemented in the prior art and will not be described in detail in the present disclosure. The automatic locking device 100 is mainly composed of a lock base 110, a lock tongue 120, a lock cover 130, a power assisting block 140 and an unlocking rod 150. The locking bolt 120 is slidably mounted on the lock base 110 along an up-down moving direction perpendicular to a horizontal moving direction in which the locking point 210 is locked in a resiliently resettable manner, and the lock cover 130 is fixedly connected with the lock base 110 to cover the locking bolt 120.

Referring to fig. 2, 3 and 4, a first sliding groove 111 and a second sliding groove 112 extending up and down are formed on the lock base 110, a first sliding block 1211 and a second sliding block 1212 respectively matching with the first sliding groove 111 and the second sliding groove 112 are convexly formed on a surface of the lock tongue 120 opposite to the lock base 110, and the first sliding block 1211 and the second sliding block 1212 are slidably inserted into the corresponding first sliding groove 111 and the second sliding groove 112 to guide the lock tongue 120 to slide up and down relative to the lock base 110. The locking cap 130 includes a top plate 131, two side plates 132 and 133 located at both sides of the top plate 131, and a lower end plate 134 located at the lower end of the top plate 131. The locking cover 130 is fixedly connected with the lock base 110 through a first rivet 171 and a second rivet 172 which are respectively arranged at the upper end and the lower end of the sliding direction of the lock tongue, so that the lock tongue 120 is covered in a space enclosed by the top plate 131 and the two side plates 132 and 133, the first slide block 1211 and the second slide block 1212 of the lock tongue 120 are limited to be separated from the first slide groove 111 and the second slide groove 112 of the lock base 110 (see fig. 4), and the lock tongue 120 is ensured to slide up and down only. Moreover, the first rivet 171 also serves to limit the up-and-down sliding stroke of the locking bolt 120. When the latch 120 is elastically restored to the end of the sliding stroke, the upper end of the latch 120 abuts against the first rivet 171, and will be described later in describing the operation of the automatic locking device 100.

Specifically, as shown in fig. 2 and 5, the lower end of the lock tongue 120 in the sliding direction is provided with a first spring mounting column 1221 and a second spring mounting column 1222 in a protruding manner, the upper ends of the first compression spring 161 and the second compression spring 162 are respectively sleeved on the first spring mounting column 1221 and the second spring mounting column 1222, and the lower ends of the first compression spring 161 and the second compression spring 162 are respectively abutted against the lower end plate 134 of the lock cover 130. The bolt 120 slides downwards under the action of external force to compress the first compression spring 161 and the second compression spring 162 to deform, and after the external force is released, the first compression spring 161 and the second compression spring 162 recover to deform to enable the bolt 120 to slide upwards and elastically reset. In various embodiments according to the present utility model, the first compression spring 161 and the second compression spring 162 may be replaced by other elastic members that can urge the latch bolt 120 to elastically return after the latch bolt 120 slides downward, which is not limited to the illustrated embodiment.

Referring again to fig. 2 and 5, the latch bolt 120 is provided with a guide surface 125 on the locking path of the lock point 210, which is opposite to the outside of the lock point 210, and the guide surface 125 is disposed obliquely with respect to the sliding direction of the latch bolt 120, preferably, an oblique plane, or an oblique arc surface. The latch tongue 120 further forms a latching surface 124 extending in the sliding direction on the inner side facing away from the guide surface 125, and preferably forms a latching groove 123 on the inner side facing away from the guide surface 125 for latching the latching point 210. Further, the latch 120 is provided with a guide groove 126 extending in a horizontal direction along which the latch point moves at a position near the lower end. The booster block 140 is provided with a guide slide block 141 matched with the guide groove 126, and the booster block 140 is placed in the guide groove 126 through the guide slide block 141 and can slide along the guide groove 126. The booster block 140 has a first booster surface 142 located below the outer side of the guide surface 125 of the tongue 120, and a second booster surface 143 located on the inner side facing away from the first booster surface 142 and abutting the first rivet 171. The first booster surface 142 is preferably a vertical plane facing the lock point 210 and the second booster surface 143 is preferably a diagonal plane. In addition, the booster block 140 and the tongue 120 are further provided with a first set of limiting surfaces 144 and 128 and a second set of limiting surfaces 145 and 129, respectively, that are opposite to each other. When the booster block 140 is pushed by the lock point 210 to slide leftwards along the guide groove 126 to the end of the sliding stroke, the first set of limiting surfaces 144 and 128 of the booster block 140 and the lock tongue 120 abut against each other, and when the booster block 140 slides rightwards and returns reversely along the guide groove 126, the second set of limiting surfaces 145 and 129 of the booster block 140 and the lock tongue 120 abut against each other (see fig. 7). Further, the lock tongue 120 is further provided with a mounting cylinder 127 protruding from the other side of the locking groove 123 opposite to the locking surface 124, and the unlocking lever 150 is correspondingly provided with a mounting hole 151 sleeved on the mounting cylinder 127, so as to rotate around the mounting cylinder 127 relative to the lock tongue 120. The mounting cylinder 127 is further sleeved with a torsion spring 180, and two ends of the torsion spring 180 respectively prop against the unlocking rod 150 and the lock tongue 120 to enable the unlocking rod 150 to be kept at an initial position relative to the lock tongue 120. The unlocking lever 150 is further provided with a first acting surface 152 located behind the guide surface 125 of the tongue 120 in the horizontal locking direction of the locking point 210 and a second acting surface 153 located at the upper end of the unlocking lever 150. The first active surface 152 is preferably a vertical plane facing the lock point 210 and the second active surface 153 is preferably a horizontal plane. The first acting surface 152 of the unlocking rod 150 is pushed by the locked locking point 210, so that the unlocking rod 150 rotates around the mounting cylinder 127 to avoid deformation of the torsion spring 180, and after the pushing acting force is released, the torsion spring 180 recovers to deform to enable the unlocking rod 150 to rotate and reset. Torsion spring 180 may also be replaced with other forms of resilient members in accordance with various embodiments of the present utility model and is not limited to the illustrated embodiment.

The process of implementing the automatic locking by the normal cooperation of the automatic locking device 100 and the locking point 210 according to the above embodiment of the present utility model is shown in fig. 6. When the window sash is closed in the open state, the lock point 210 first abuts against the guide surface 125 of the lock tongue 120 during the process of moving along the locking path indicated by the arrow in the horizontal direction in fig. 6, and further pushes against the guide surface 125 to enable the lock tongue 120 to slide downwards relative to the lock base 110 in the direction indicated by the arrow in the vertical direction in fig. 6. Meanwhile, after the lock point 210 pushes the guide surface 125 to lock into contact with the first acting surface 152 of the unlocking lever 150, the unlocking lever 150 is urged to rotate around the mounting cylinder 127 by the first acting surface 152 to avoid, and the torsion spring 180 (not visible in the figure) is compressively deformed. When the lock point 210 passes over the guide surface 125, the pushing and resisting force on the lock tongue 120 is released, and the lock tongue 120 is elastically restored under the action of the first compression spring 161 and the second compression spring 162, and slides upwards in the direction indicated by the vertical upward arrow in fig. 6 until the upper end of the lock tongue 120 is restored to the proper position when abutting against the first rivet 171. At this time, the lock point 210 is clamped between the unlocking lever 150 and the catching surface 124 of the latch bolt 120, and the catching surface 124 blocks the horizontal outward movement of the lock point 210, thereby locking the lock point 210.

When the window sash falls or falls to cause the lock point 210 to move downwards compared with the normal position shown in fig. 6, as shown in fig. 7, the lock point 210 moves along the locking path shown by the arrow in the horizontal direction in fig. 7 to abut against the first booster surface 142 of the booster block 140 first, and pushes against the first booster surface 142 in the process of continuing to move horizontally to cause the booster block 140 to slide leftwards along the guide slot 126 through the guide slide block 141, and simultaneously, abuts against the outer periphery of the first rivet 171 through the second booster surface 143 of the booster block 140, and the first rivet 171 is used as a fulcrum to cause the lock tongue 120 to slide along the direction shown by the arrow in the vertical direction in fig. 7 to drive the guide surface 125 of the lock tongue 120 to move downwards until the lock point 210 enters the guide surface 125. At this time, the first set of stopper surfaces 144 and 128 of the booster block 140 and the tongue 120 abut against each other, and the sliding stroke of the booster block 140 is restricted. Thereafter, the locking point 210 pushes against the guiding surface 125, and the locking bolt 120 is pushed to slide downwards as in the normal automatic locking process shown in fig. 6, and meanwhile, the unlocking rod 150 is pushed to rotate to avoid through the first acting surface 152 of the unlocking rod 150. When the lock point 210 passes over the guide surface 125, the lock tongue 120 slides upwards to elastically reset, the buckling surface 124 locks the lock point 210, and at the same time, the second booster surface 143 of the booster block 140 again abuts against the outer periphery of the first rivet 171 during elastic reset of the lock tongue 120, so that the booster block 140 slides reversely rightward along the guide groove 126, and the booster block 140 and the lock tongue 120 are reset in place when abutting against the second set of limiting surfaces 145 and 129 of each other.

After the lock point 210 is locked into the automatic locking device 100 through the automatic locking process shown in fig. 6 or fig. 7, the handle of the transmission rod 220 driving the locking mechanism 200 is rotated from the flat-open state to the locked state, so that the lock point 210 can be driven to move up along the locking surface 124 of the lock tongue 120 and be separated from the blocking of the locking surface 124. At this time, referring to fig. 8, the lock base 110 is further provided with a blocking wall 117 aligned with the fastening surface 124 of the lock tongue 120 to block the horizontal outward movement of the lock point 210, so that the lock point 210 is continuously locked, and the window sash is in a normal locking state. Meanwhile, the upward movement of the lock point 210 releases the pushing and resisting force on the unlocking lever 150, and the unlocking lever 150 reversely rotates and returns under the elastic force of the restoring deformation of the torsion spring 180, so that the second acting surface 153 of the unlocking lever 150 is located below the lock point 210 and higher than the buckling surface 124 of the lock tongue 120.

Then, referring to fig. 9, the handle of the transmission rod 220 of the locking mechanism 200 is rotated from the locking state to the flat-open state, so as to drive the locking point 210 to move downwards along the direction of the vertical downward arrow in fig. 9. The lock point 210 will abut against the second acting surface 153 of the unlocking lever 150 during the downward movement, and further the unlocking lever 150 is driven by the second acting surface 153 to drive the lock tongue 120 to slide downward, so as to avoid the lock point 210. When the lock point 210 moves down to be out of the blocking wall 117, the lock tongue 120 also slides down to the end of its sliding stroke, and at this time, the lock point 210 can be disengaged from the automatic locking device 100 in the direction indicated by the arrow in the horizontal direction in fig. 9, so as to achieve unlocking. Thereafter, the latch tongue 120 is elastically restored, and the automatic locking device 100 returns to the original state.

According to the automatic locking device 100 of the embodiment of the present utility model, the guide surface 125 of the sliding lock tongue 120 cooperates with the fastening surface 124 to automatically lock the lock point 210, the booster block 140 slidably mounted on the lock tongue 120 along the moving direction of the lock point compensates for temporary failure of the guide surface caused by downward movement of the lock point 210, and the unlocking of the lock point 210 from the automatic locking state to the normal locking state is achieved by rotating the unlocking lever 150 mounted on the lock tongue 120. The automatic locking device 100 according to the above embodiment of the present utility model can normally and automatically lock the lock point 210 even if the lock point 210 moves down due to the falling angle or drop of the window sash, thereby improving the safety performance and customer experience of the window. Moreover, the anti-lock point downward movement failure structure and the unlocking structure of the automatic locking device 100 are simple and practical, and the installation is convenient. In addition, the automatic locking device 100 according to the above embodiment of the present utility model ensures that the user must first drive the lock point 210 to move down by the handle to unlock the lock point, so as to avoid the lock point 210 not returning to the automatic locking position to open the window, and thus the automatic locking cannot be achieved next time.

Fig. 10 and 11 are schematic views showing the structure of a window in a window sash locking state and a window sash opening state, respectively, according to an embodiment of the present utility model. Referring to fig. 10 and 11, the window includes a window frame 300 and a window sash 400, the window sash 400 is provided with the aforementioned latch mechanism 200, and the window frame 300 is provided with the aforementioned automatic locking device 100. As shown in fig. 2, the lock base 110 is provided with mounting holes 115 and 116 at both upper and lower ends thereof, respectively, and the lock base 110 is fastened to the window frame 300 by screwing screws 191 through the mounting holes 115 and 116 and the rubber rings 191 and gaskets 193 to the window frame 300. When the lock point 210 of the latch mechanism 200 is locked into the automatic locking device 100, the window sash 400 is locked (as shown in fig. 10); when the latch point 210 of the latch mechanism 200 is unlatched from the automatic locking device 100, the window sash 400 is unlatched (as shown in fig. 11). According to various embodiments of the present utility model, the locking mechanism 200 is mounted on the window frame 300 and the automatic locking device 100 is mounted on the window sash 400, and locking and unlocking of the window sash 400 can also be achieved by cooperation of the locking point 210 and the automatic locking device 100.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. An automatic locking device for locking outside lock point, but including lock seat and the mode slidable mounting in the spring bolt on the lock seat that resets, but be provided with the guide surface of slope and dorsad on the spring bolt the buckle face of guide surface, the lock point is in the in-process of following the locking route removal pushes against the guide surface makes the spring bolt slide relative lock seat, just the spring bolt is in the lock point is crossed the guide surface is elasticity reset, and passes through buckle face locking lock point, its characterized in that:

the automatic locking device further comprises a power-assisted block which is slidably arranged on the lock tongue along the moving direction of the lock point, the power-assisted block is provided with a first power-assisted surface and a second power-assisted surface, the first power-assisted surface is positioned below the outer side of the guide surface to be abutted with the lock point in the locking process of the lock point which moves downwards, the second power-assisted surface is abutted with a supporting point fixedly arranged on the lock seat in the sliding process of pushing the first power-assisted surface by the lock point to enable the power-assisted block to slide downwards until the lock point enters the guide surface, and the second power-assisted surface is abutted with the supporting point again in the elastic reset process of the lock tongue after the lock point passes over the guide surface to enable the power-assisted block to slide reversely and reset.

2. The automatic locking device according to claim 1, wherein the lock tongue is provided with a guide groove extending along the moving direction of the lock point, and the power assisting block is provided with a guide slide block and is placed in the guide groove through the guide slide block to slide along the guide groove.

3. The automatic locking device according to claim 1, wherein at least one sliding groove extending up and down is formed in the lock seat, at least one sliding block matched with the at least one sliding groove is convexly arranged on the surface, opposite to the lock seat, of the lock tongue, the at least one sliding groove is slidably inserted into the at least one sliding groove, and a lock cover which covers the lock tongue to limit the sliding block of the lock tongue from falling out of the sliding groove is fixedly arranged on the lock seat.

4. The automatic locking device according to claim 3, wherein at least one first elastic member abuts between a lower end of the lock tongue in a sliding direction and a lower end of the lock cover, and the lock tongue is pushed by the lock point to slide downward to deform the first elastic member.

5. The automatic locking device according to claim 3, wherein the lock cover is fixedly connected to the lock base by a first rivet and a second rivet respectively provided at upper and lower ends of the lock tongue in a sliding direction, and when the lock tongue is elastically restored upward to an end of a sliding stroke, an upper end of the lock tongue abuts against the first rivet.

6. The automatic locking device according to claim 5, wherein the second booster surface of the booster block abuts against the outer periphery of the first rivet in the process of pushing the first booster surface by the lock point to cause the booster block to slide, and the first rivet is used as a fulcrum to cause the lock tongue to slide downward.

7. The automatic locking device according to claim 1, wherein the lock seat is further provided with a blocking wall aligned with the buckling surface of the lock tongue, and the locking point is driven to move upwards along the buckling surface of the lock tongue to be separated from the buckling surface and then locked by the blocking wall.

8. The automatic locking device according to claim 7, further comprising an unlocking lever rotatably mounted on the lock tongue in an elastically resettable manner, wherein the unlocking lever has a first action surface and a second action surface, the first action surface abuts against the lock point in a process of pushing the lock point against the guide surface to lock into the buckle surface, the unlocking lever is pushed against by the lock point to rotate to avoid the lock point, the second action surface is positioned under the lock point when the unlocking lever is pivoted to return after the lock point is driven to move up and off the buckle surface, and the second action surface abuts against the lock point in a process of driving the lock point to move down to drive the lock tongue to slide down until the lock point is separated from the lock of the blocking wall.

9. The automatic locking device according to claim 8, wherein the lock tongue is provided with a mounting cylinder in a protruding manner, and the unlocking lever is provided with a mounting hole and is sleeved on the mounting cylinder through the mounting hole; the mounting cylinder is also sleeved with a torsion spring, and two ends of the torsion spring respectively prop against the unlocking rod and the lock tongue to deform when the unlocking rod is pushed by the locking point to rotate.

10. A window comprising a frame and a sash, one of which is fitted with a lock point, characterized in that the other of the frame and the sash is fitted with an automatic locking device according to any one of claims 1-9.