Safety handle window lock

Abstract

The utility model discloses a safety handle window lock, which relates to the technical field of window locks, and aims to solve the technical problems that the existing window lock capable of preventing mistaken opening is complicated in structure and inconvenient to switch between an opening state and a closing state, and adopts the technical scheme that a locking piece is arranged in a handle body, and the handle body is rotatably connected with a connecting part on a lock seat; a bolt on the locking piece extends into a limiting opening of the connecting part, and an unlocking ring groove is formed in front of the limiting opening. The rotation of the plug pin on the vertical plane is limited through the limiting opening, and the handle body cannot rotate. The bolt moves forwards, breaks away from the limiting opening and enters the unlocking ring groove, at the moment, the bolt breaks away from limitation of the limiting opening and can rotate in the unlocking ring groove along the vertical face, and the handle body can rotate relative to the lock base. The handle body drives the spring bolt to rotate to achieve switching between the opening state and the closing state of the window lock, the window lock can be prevented from being opened easily, operation is convenient, the opening speed of the window lock is effectively increased, and the safety performance of a window body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of window locks, and more specifically, to a safety handle window lock. Background Art

[0002] On vehicles or equipment in industries such as rail transit, power facilities, and communications equipment, when windows are closed, it is necessary to prevent window locks from being easily opened to prevent unauthorized personnel from easily opening them and provide security. Currently, the anti-misopening structure of window locks is complex, but windows need to be opened frequently during regular use or inspection. The complex mechanical lock structure may cause operational delays and affect the response speed. At this time, window locks that are not easy to switch between open and closed states will bring a burden to users and will also cause inconvenience in emergency situations. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a safety handle window lock, which can prevent the window lock from being easily opened and is easy to operate, effectively improving the opening speed of the window lock, and solving the technical problems that the existing window locks that prevent accidental opening have complex structures and are not convenient for switching between open and closed states.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions: a safety handle window lock, comprising a handle body, a lock tongue, a lock seat and a lock plate, the lock seat being provided with a connecting portion, the connecting portion being provided with a rotating through slot, the handle body being fixedly connected with the lock tongue after passing through the rotating through slot, the handle body being rotatably connected with the rotating through slot; the handle body being provided with an open pressing cavity, a locking piece being provided in the pressing cavity, the locking piece being able to slide back and forth relative to the handle body, a latch being provided at one end of the locking piece close to the lock seat, a waist-shaped hole being provided on the side wall of the handle body being connected with the pressing cavity, the waist-shaped hole being provided along The locking member is arranged in the front-to-back direction and is located in the rotating through groove; the connecting portion is provided with a connected limiting opening and an unlocking ring groove at one end close to the locking member, the limiting opening and the unlocking ring groove are respectively connected with the rotating through groove, the unlocking ring groove is located behind the limiting opening, the latch pin passes through the waist-shaped hole and extends into and is limited in the limiting opening, when the locking member slides forward, the latch pin moves forward along the waist-shaped hole and disengages from the limiting opening and enters the unlocking ring groove to unlock the handle body; the lock plate is provided on one side of the lock seat, and the lock plate is provided with a lock groove, and rotating the handle body drives the lock tongue to rotate, enter and disengage from the lock groove.

[0005] Optionally, the width of the waist-shaped hole and the opening size of the limiting opening are respectively matched with the outer diameter of the latch.

[0006] Optionally, the locking member includes a pressing portion and a guide column, the pressing portion is arranged at the opening of the pressing cavity, the guide column is connected to one end of the pressing portion away from the opening of the pressing cavity, a spring is sleeved on the guide column, two ends of the spring are respectively abutted against the inner wall of the pressing cavity and the pressing portion, and the latch is arranged at one end of the guide column away from the spring.

[0007] Optionally, the guide column is provided with a first mounting hole, and the latch is detachably disposed in the first mounting hole.

[0008] Optionally, the handle body is also fixedly connected with a circular gasket, which is located between the locking tongue and the connecting part. The gasket rotates with the handle body, and a protrusion is provided on the outer peripheral surface of the gasket. A travel limit groove is provided at the end of the connecting part away from the handle body, and the shape of the travel limit groove is an arc shape. The protrusion is rotatably arranged in the travel limit groove; when the handle body is rotated to the unlocking and locking state, the protrusion abuts against the wall surface of the travel limit groove.

[0009] Optionally, the safety handle window lock also includes a fastener, a second mounting hole is provided at one end of the handle body close to the lock tongue, a third mounting hole is provided through the lock tongue, the end of the handle body with the second mounting hole is inserted into the third mounting hole, the fastener is inserted into the third mounting hole and the second mounting hole, the fastener is abutted against the lock tongue, and the lock tongue is fixedly mounted to the handle body.

[0010] Optionally, a first locking portion is provided at one end of the connecting portion close to the handle body, and the handle body is provided with a second locking portion, the second locking portion is provided below the first locking portion, and the first locking portion and the second locking portion are provided with corresponding through holes.

[0011] Optionally, the handle body includes a gripping portion and a rotating portion, the gripping portion is connected to one end of the rotating portion, and the rotating portion is rotatably connected to the rotating through slot.

[0012] Optionally, the lock slot is provided with a guide opening on the side where the lock tongue rotates to enter, and a surface of the lock tongue close to the guide opening is provided with an inclined surface, and the inclined surface cooperates with the guide opening.

[0013] Optionally, a through opening is formed at one end of the lock seat close to the lock plate, and the lock tongue passes through the through opening.

[0014] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0015] By setting a locking piece, the latch on the locking piece passes through the waist-shaped hole and then extends into the limit opening. At this time, if you want to rotate the handle body, under the cooperation of the waist-shaped hole and the latch, and under the limiting effect of the limit opening on the latch, the limit opening limits the rotation of the latch on the vertical plane, and the handle body cannot be rotated. At this time, press the locking piece forward to make the latch move forward along the waist-shaped hole and break away from the limit opening and enter the unlocking ring groove. At this time, the latch breaks away from the restriction of the limit opening and can rotate along the vertical plane in the unlocking ring groove to unlock the handle body, so that the handle body can rotate relative to the lock seat. The handle body drives the lock tongue to rotate into or out of the lock groove to realize the conversion of the window lock open and closed state, which can prevent the window lock from being easily opened, and is easy to operate, effectively improves the speed of opening the window lock, and will not cause the window lock to be opened due to accidental touching of the handle, thereby improving the safety performance of the window. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded schematic diagram of a safety handle window lock according to an embodiment of the utility model;

[0017] Figure 2 This is a front view of a handle body of a safety handle window lock according to an embodiment of the utility model;

[0018] Figure 3 for Figure 2 Top view of the safety handle window lock cut along AA;

[0019] Figure 4 for Figure 2 A top view of the handle body cut along AA;

[0020] Figure 5 for Figure 2 Top view of the lock base cut along AA;

[0021] Figure 6 This is a schematic structural diagram of a gasket and a limiting ring of a safety handle window lock according to an embodiment of the utility model;

[0022] Figure 7 This is a schematic structural diagram of a first locking portion and a second locking portion of a safety handle window lock according to an embodiment of the utility model;

[0023] Figure 8 The utility model is a top view of a safety handle window lock according to an embodiment of the present invention.

[0024] Description of the accompanying drawings: 1. Handle body; 11. Grip portion; 12. Rotating portion; 101. Pressing cavity; 102. Locking piece; 1021. Pressing portion; 1022. Guide column; 1023. Spring; 1024. First mounting hole; 103. Latch; 104. Waist-shaped hole; 105. Second mounting hole; 106. Second locking portion; 2. Lock tongue; 201. Third mounting hole; 202. Inclined surface; 3. Lock seat; 301. Connecting portion; 302. Rotating through groove; 303. Limiting opening; 304. Unlocking ring groove; 305. Travel limiting groove; 306. First locking portion; 307. Through opening; 4. Lock plate; 401. Lock groove; 402. Guide opening; 5. Gasket; 501. Bump; 6. Fastener. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed in this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of the implementation of this utility model. The specific structure can be described with reference to the drawings of the patent application.

[0027] In order to solve the above technical problems, the utility model discloses a safety handle window lock, such as Figures 1 to 5As shown, it includes: a handle body 1, a lock tongue 2, a lock seat 3 and a lock plate 4, the lock seat 3 is provided with a connecting portion 301, and the connecting portion is penetrated by a rotating through slot 302. The handle body 1 is fixedly connected with the lock tongue 2 after passing through the rotating through slot 302, and the handle body 1 is rotatably connected with the rotating through slot 302; the handle body 1 is provided with an open pressing cavity 101, and a locking member 102 is provided in the pressing cavity 101. The locking member 102 can slide back and forth relative to the handle body 1, and a latch 103 is provided at one end of the locking member 102 close to the lock seat 3. The side wall of the handle body is provided with a waist-shaped hole 104 connected to the pressing cavity 101, and the waist-shaped hole 104 is arranged along the front-to-back direction and is located in the rotating through slot 302 ; One end of the connecting portion 301 close to the locking member 102 is provided with a connected limiting opening 303 and an unlocking ring groove 304, the limiting opening 303 and the unlocking ring groove 304 are respectively connected to the rotating through groove 302, the unlocking ring groove 304 is located behind the limiting opening 303, the latch pin 103 passes through the waist-shaped hole 104 and extends into and is limited in the limiting opening 303, when the locking member 102 slides forward, the latch pin 103 moves forward along the waist-shaped hole 104 and disengages from the limiting opening 303 and enters the unlocking ring groove 304 to unlock the handle body 1; a lock plate 4 is provided on one side of the lock seat 3, and the lock plate 4 is provided with a lock groove 401, and rotating the handle body 1 drives the lock tongue 2 to rotate into and disengage from the lock groove 401.

[0028] By setting the locking member 102, when the window lock is in the closed state and the locking member 102 is in the locked state, the latch 103 passes through the waist-shaped hole 104 and then extends into the limiting opening 303, and the latch 103 is limited in the limiting opening 303. At this time, if the handle body 1 is to be rotated, the limiting opening 303 limits the rotation of the latch 103 on the vertical plane under the cooperation of the waist-shaped hole 104 and the latch 103, and the limiting effect of the limiting opening 303 on the latch 103, and the handle body 1 cannot be rotated. At this time, the locking member 102 is pressed forward to make the latch 103 move forward along the waist-shaped hole 104 and break away from the limiting opening 303 and enter the unlocking ring groove 304. At this time, the latch 103 breaks away from the limitation of the limiting opening 303 and can rotate along the vertical plane in the unlocking ring groove 304 to unlock the handle body 1, so that the handle body 1 can rotate relative to the lock seat 3, and the handle body 1 is rotated to drive the lock tongue 2 to rotate and break away from the lock groove 401, so that the lock can be unlocked. When locking is required, the handle body 1 is rotated to the original position, and the handle body 1 drives the lock tongue 2 to enter the lock groove 401 to achieve locking.

[0029] The safety handle window lock requires pressing the locking piece 102 to unlock the handle body 1 before the handle body 1 can be rotated and unlocked. This can prevent the window lock from being easily opened, is easy to operate, and effectively increases the speed of opening the window lock. It solves the technical problem that the existing window lock that prevents accidental opening has a complex structure and is not convenient for switching between the open and closed states.

[0030] Further, such as Figure 1As shown, in one embodiment of the present invention, the width of the waist-shaped hole 104 and the opening size of the limiting opening 303 are matched with the outer diameter of the latch 103 respectively.

[0031] The width of the waist-shaped hole 104 matches the outer diameter of the latch pin 103, preventing the locking member 102 from rotating relative to the handle body 1, which makes it difficult for the latch pin 103 to align with the limiting opening 303. The opening size of the limiting opening 303 matches the outer diameter of the latch pin 103. If there is space in the limiting opening 303 for the latch pin 103 to move, the handle body 1 can still rotate slightly relative to the connecting portion 301 in the locked state.

[0032] Further, such as Figure 4 As shown, in one embodiment of the utility model, the locking member 102 includes a pressing portion 1021 and a guide column 1022. The pressing portion 1021 is arranged at the opening of the pressing cavity 101. The guide column 1022 is connected to one end of the pressing portion 1021 away from the opening of the pressing cavity 101. A spring 1023 is sleeved on the guide column 1022. The two ends of the spring 1023 are respectively against the inner wall of the pressing cavity 101 and the pressing portion 1021. The latch 103 is arranged at one end of the guide column 1022 away from the spring 1023.

[0033] When the pressing portion 1021 is pushed forward and moves close to the lock seat 3, the spring 1023 is compressed, the bolt 103 moves forward and disengages from the limiting opening 303 and enters the unlocking ring groove 304, and the handle body 1 is unlocked. At this time, the handle body 1 can rotate relative to the connecting portion 301. After the rotation, the bolt 103 is subjected to the reverse elastic force of the spring and abuts against the side wall of the unlocking ring groove 304, so that the locking member 102 cannot move backward. When the handle body 1 rotates back to its original position, the bolt 103 rotates again to the position of the limiting opening 303. At this time, the spring 1023 recovers. Under the action of the spring 1023, the locking member 102 moves backward and resets, and the bolt 103 re-enters the limiting opening 303. At this time, the bolt 103 is restricted by the limiting opening 303, and the handle body 1 cannot rotate relative to the connecting portion 301.

[0034] The spring 1023 has a simple structure and high reliability. The spring 1023 can immediately return to its original state after the external force is removed, ensuring that the spring 1023 has good stability and durability under continuous working conditions, ensuring that the handle body 1 can smoothly switch between the locked state and the unlocked state.

[0035] Further, such as Figure 4 As shown, in one embodiment of the present invention, the guide column 1022 is provided with a first mounting hole 1024 , and the latch 103 is detachably disposed in the first mounting hole 1024 .

[0036] Specifically, the first mounting hole 1024 is a threaded hole, and the outer surface of the latch 103 is provided with an external thread. The latch 103 is threadedly matched with the first mounting hole 1024, so that the latch 103 is detachably arranged in the first mounting hole 1024. After the handle body 1 is removed from the connecting portion 301, the latch 103 can be loosened and taken out from the waist-shaped hole 104, so that the locking member 102 and the spring 1023 can be removed from the pressing cavity 101, which is convenient for the maintenance of the handle body 1.

[0037] Further, such as Figure 1 and 6 As shown, in one embodiment of the utility model, the handle body 1 is also fixedly connected with a circular gasket 5, the gasket 5 is located between the lock tongue 2 and the connecting portion 301, the gasket 5 rotates with the handle body 1, the outer peripheral surface of the gasket 5 is provided with a protrusion 501, and the end of the connecting portion 301 away from the handle body 1 is provided with a travel limit groove 305, the shape of the travel limit groove 305 is arc-shaped, and the protrusion 501 is rotatably arranged in the travel limit groove 305; when the handle body 1 is rotated to the unlocking and locking state, the protrusion 501 abuts against the wall surface of the travel limit groove 305.

[0038] The protrusion 501 slides in the travel limit groove 305. The sliding range of the protrusion 501 can be limited according to the length of the travel limit groove 305, corresponding to the rotation angle of the limit washer 5. The rotation angle of the handle body 1 is limited by the rotation angle of the washer 5, so as to realize the control of the two node positions of unlocking and locking. Preferably, the length of the travel limit groove 305 is a quarter of a circle arc. Limited by the length of the travel limit groove 305, the rotation angle of the handle body 1 is 90°.

[0039] Further, such as Figure 1 and 6 As shown, in one embodiment of the utility model, the safety handle window lock also includes a fastener 6, a second mounting hole 105 is provided at one end of the handle body 1 close to the lock tongue 2, a third mounting hole 201 is provided through the lock tongue 2, the end of the handle body 1 with the second mounting hole 105 is inserted into the third mounting hole 201, the fastener 6 is inserted into the third mounting hole 201 and the second mounting hole 105, the fastener 6 is abutted against the lock tongue 2, and the lock tongue 2 is fixedly mounted on the handle body 1.

[0040] Specifically, the fastener 6 is a screw, the screw cap abuts against the locking tongue 2 , the second mounting hole 105 is a threaded hole, and the fastener 6 is threadedly connected to the second mounting hole 105 .

[0041] Preferably, the third mounting hole 201 is square, and the shape of one end of the handle body 1 close to the lock tongue 2 matches the shape of the third mounting hole. One end of the handle body 1 passes through the third mounting hole 201, and when the handle body 1 rotates, the edge of one end of the handle body 1 drives the square third mounting hole 201 to rotate, and the tightness of the fastener 6 and the second mounting hole 105 will not affect the synchronous rotation of the lock tongue 2 and the handle body 1.

[0042] Further, such as Figure 7 As shown, in one embodiment of the utility model, a first locking portion 306 is provided at one end of the connecting portion 301 close to the handle body 1, and the handle body 1 is provided with a second locking portion 106, the second locking portion 106 is provided below the first locking portion 306, and the first locking portion 306 and the second locking portion 106 are provided with corresponding through holes.

[0043] When the handle body 1 is rotated until the through hole of the first locking part 306 is opposite to the through hole of the second locking part 106, a seal or a wire lock can be used to pass through the through hole to lock the first locking part 306 and the second locking part 106. Even if the locking member 102 is pushed to make the pin 103 disengage from the limit opening 303, the handle body 1 cannot be rotated, further improving the safety of the window lock. The corresponding operator is required to open the seal or wire lock to rotate the handle body 1, which is suitable for window lock usage scenarios with different safety levels.

[0044] Specifically, the locking direction of the window lock is to rotate the handle body 1 clockwise. Since the second locking portion 106 is disposed below the first locking portion 306, when the handle body 1 continues to rotate clockwise, the upper surface of the second locking portion 106 will abut against the lower surface of the first locking portion 306, thereby restricting the handle body 1 from continuing to rotate clockwise. Figure 1 and Figure 2 The curved arrow indicates a clockwise direction.

[0045] Further, such as Figures 3 to 5 As shown, in one embodiment of the present invention, the handle body 1 includes a gripping portion 11 and a rotating portion 12 , the gripping portion 11 is connected to one end of the rotating portion 12 , and the rotating portion 12 is rotatably connected to the rotating through slot 302 .

[0046] The handle body 1 is provided with a gripping portion 11. The user can hold the gripping portion 11 with one hand, press the pressing portion 1021 with a finger to unlock the handle body 1, and rotate the rotating portion 12 to make the handle body 1 drive the lock tongue 2 to rotate, thereby opening or locking the window lock.

[0047] Further, such as Figure 1 and 8As shown, in one embodiment of the utility model, a guide opening 402 is provided on the lock slot 401 at the side where the lock tongue 2 rotates to enter, and a slope 202 is provided on a surface of the lock tongue 2 close to the guide opening 402 , and the slope 202 matches the guide opening 402 .

[0048] When the lock tongue 2 is screwed into the lock groove 401, the inclined surface 202 first contacts the guide opening 402, and the guide opening 402 guides the inclined surface 202, so that the lock tongue 2 can be smoothly screwed into the lock groove 401, avoiding the lock tongue 2 from being unable to be screwed into the lock groove 401 when there is a slight position deviation between the lock tongue 2 and the lock groove 401.

[0049] Further, such as Figure 1 As shown, in one embodiment of the present invention, a through opening 307 is provided at one end of the lock seat 3 close to the lock plate 4, and the through opening 307 is for the lock tongue 2 to pass through.

[0050] Specifically, the lock base 3 is mounted on the window, the lock plate 4 is mounted on the window frame, and the lock tongue 2 extends from the through opening 307 and enters the lock groove 401 to achieve the locking of the window and the window frame. Providing the through opening 307 on the lock base 3 can reduce the thickness of the lock, and the lock can be used directly by being mounted on the window. Otherwise, the lock tongue 2 needs to be arranged in front of the lock base 3, and an opening for the lock tongue 2 to extend out needs to be provided on the window. The lock base 3 is mounted on the window so that the lock tongue extends out of the window, which is inconvenient for disassembly and maintenance of the lock.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A safety handle window lock, characterized in that: It comprises a handle body, a lock tongue, a lock seat and a lock plate, wherein the lock seat is provided with a connecting portion, the connecting portion is provided with a rotation slot, the handle body is fixedly connected with the lock tongue after passing through the rotation slot, and the handle body is rotationally connected with the rotation slot; The handle body is provided with an open pressing cavity, a locking piece is arranged in the pressing cavity, the locking piece can slide forward and backward relative to the handle body, a latch is arranged at one end of the locking piece close to the lock seat, a waist-shaped hole connected to the pressing cavity is arranged on the side wall of the handle body, the waist-shaped hole is arranged along the front-back direction and is located in the rotating through groove; A connecting portion is provided with a communicating limiting opening and an unlocking ring groove at one end close to the locking member, the limiting opening and the unlocking ring groove are respectively communicated with the rotating through groove, the unlocking ring groove is located behind the limiting opening, the latch passes through the waist-shaped hole and then extends into and is limited in the limiting opening, when the locking member slides forward, the latch moves forward along the waist-shaped hole and disengages from the limiting opening and enters the unlocking ring groove to unlock the handle body; The lock plate is disposed on one side of the lock seat, and the lock plate is provided with a lock slot. Rotating the handle body drives the lock tongue to rotate and enter and leave the lock slot.

2. A safety handle window lock according to claim 1, characterized in that: The width of the waist-shaped hole and the opening size of the limiting opening are respectively matched with the outer diameter of the latch.

3. The safety handle window lock according to claim 1, characterized in that: The locking member includes a pressing portion and a guide column, the pressing portion is arranged at the opening of the pressing cavity, the guide column is connected to one end of the pressing portion away from the opening of the pressing cavity, a spring is sleeved on the guide column, two ends of the spring are respectively against the inner wall of the pressing cavity and the pressing portion, and the latch is arranged at one end of the guide column away from the spring.

4. A safety handle window lock according to claim 3, characterized in that: The guide column is provided with a first mounting hole, and the latch is detachably arranged in the first mounting hole.

5. The safety handle window lock according to claim 1, characterized in that: The handle body is also fixedly connected with a circular gasket, which is located between the locking tongue and the connecting portion. The gasket rotates with the handle body, and a protrusion is provided on the outer peripheral surface of the gasket. A travel limit groove is provided at one end of the connecting portion away from the handle body. The shape of the travel limit groove is an arc shape, and the protrusion is rotatably arranged in the travel limit groove; when the handle body is rotated to an unlocking and locking state, the protrusion abuts against the wall surface of the travel limit groove.

6. The safety handle window lock according to claim 1, characterized in that: The safety handle window lock also includes a fastener. A second mounting hole is provided at one end of the handle body close to the lock tongue. A third mounting hole is provided through the lock tongue. The end of the handle body with the second mounting hole is inserted into the third mounting hole. The fastener is inserted into the third mounting hole and the second mounting hole. The fastener abuts against the lock tongue to fix the lock tongue to the handle body.

7. The safety handle window lock according to claim 1, characterized in that: A first locking portion is provided at one end of the connecting portion close to the handle body, and a second locking portion is provided on the handle body. The second locking portion is provided below the first locking portion, and the first locking portion and the second locking portion are provided with corresponding through holes.

8. The safety handle window lock according to claim 1, characterized in that: The handle body comprises a gripping portion and a rotating portion, wherein the gripping portion is connected to one end of the rotating portion, and the rotating portion is rotatably connected to the rotating through slot.

9. The safety handle window lock according to claim 1, characterized in that: The lock groove is provided with a guide opening on the side where the lock tongue rotates and enters, and a surface of the lock tongue close to the guide opening is provided with an inclined surface, and the inclined surface matches the guide opening.

10. The safety handle window lock according to claim 1, characterized in that: A through opening is formed at one end of the lock seat close to the lock plate, and the lock tongue passes through the through opening.

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