Handle and lockset with child safety lock structure

Abstract

The utility model provides a handle and door and window lock with child safety lock structure, handle includes handle seat, handle handle, wheel tooth, spacing frame, steel ball, spacing bolt and bottom plate, the back of handle seat forms first installation groove and second installation groove, just has the communicating port on the baffle between second installation groove and first installation groove, spacing frame installs in first installation groove, the front panel of handle seat has the bolt position with second installation groove intercommunication, wheel tooth installs on spacing frame, at least one clamping position has on the outside wall of wheel tooth, steel ball is equipped in second installation groove, and the bottom opening of second installation groove is covered by bottom plate, spacing bolt is slidably assembled at bolt position, at least a part of spacing bolt is embedded into second installation groove, and spacing bolt prevents steel ball from exiting clamping position by sliding in bolt position, and then prevents wheel tooth from rotating. The utility model can improve the security of handle.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware, and more specifically, to a handle and door and window lock with a child safety lock structure. Background Technology

[0002] In addition to serving as a lever for applying force to doors and windows, door and window handles can also be used in conjunction with transmission rods and locking points (lock tongues) to lock and unlock doors and windows. However, the handles of currently used door and window locks are easily opened by children, which can lead to the opening of doors and windows. If the building is on a high floor, once the doors and windows are opened, it can easily pose a safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a handle and door / window lock with a child safety lock structure, addressing the issue that existing door and window locks are easily opened by children.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is to provide a handle with a child safety lock structure, including a handle base, a handle handle, wheel teeth, a limiting frame, a steel ball, a limiting pin, and a base plate. The back of the handle base has a first mounting groove adapted to the limiting frame and a second mounting groove adjacent to the first mounting groove, and the partition between the second mounting groove and the first mounting groove has a communication opening. The limiting frame is installed in the first mounting groove, and the limiting frame has a clearance space opposite to the communication opening.

[0005] The front panel of the handle seat has a first through hole extending into the first mounting groove and a pin position adapted to the limiting pin, and the pin position is connected to the second mounting groove; the tooth is mounted on the limiting frame, the tooth passes through the first through hole and is connected to the handle, the outer side wall of the tooth has at least one locking position, the side wall of the locking position is a smooth arc, and the handle drives the tooth to rotate so that the locking position is connected to the communication port;

[0006] The size of the steel ball is adapted to the size of the connecting port and the locking position. The steel ball is installed in the second mounting groove, and the bottom opening of the second mounting groove is sealed by the base plate. The limiting pin is slidably assembled at the pin position. At least a part of the limiting pin is embedded in the second mounting groove, and the limiting pin prevents the steel ball embedded in the connecting port and the locking position from exiting by sliding in the pin position, thereby preventing the gear teeth from rotating.

[0007] As a further improvement of this utility model, when the handle seat is fixed to the door or window sash, the second mounting groove is located above the side of the connecting opening, and when the toothed locking position is adjacent to the connecting opening, the steel ball located in the second mounting groove is pushed into the space between the connecting opening and the locking position by the limiting pin.

[0008] As a further improvement of this utility model, the partition between the first mounting groove and the second mounting groove is annular, and the communication port is located in the middle of the partition; the limiting pin includes a push rod portion, and when the limiting pin is assembled into the pin position, the push rod portion is embedded in the second mounting groove, and the push rod portion has an arc-shaped sidewall facing the first mounting groove, and the limiting pin prevents the steel ball from exiting the locking position through the arc-shaped sidewall of the push rod portion.

[0009] As a further improvement of this utility model, the width of the second mounting groove adjacent to the communication port is adapted to the diameter of the steel ball, and the width of the second mounting groove gradually increases in the direction away from the communication port.

[0010] As a further improvement of this utility model, the width of the second mounting groove is adapted to the width of the limiting pin, and the free end of the arc-shaped sidewall of the push rod has a wedge surface.

[0011] As a further improvement of this utility model, the limiting pin includes a main body, the push rod is connected to the main body, and when the limiting pin is installed in the pin position, the bottom of the main body is in contact with the upper surface of the base plate.

[0012] The bottom of the main body has a first limiting groove and a second limiting groove. The base plate has a spring piece protruding from the upper surface. When the limiting pin slides to the point where the spring piece is embedded in the first limiting groove, the arc-shaped sidewall of the push rod is adjacent to the communication port and prevents the steel ball from exiting the locking position. When the limiting pin slides to the point where the spring piece is embedded in the second limiting groove, the arc-shaped sidewall of the push rod moves away from the communication port.

[0013] As a further improvement of this utility model, the side wall of the main body of the limiting pin has a raised edge, the width of the outer periphery of the raised edge is greater than the width of the pin position, the top surface of the main body has a plurality of raised ridges perpendicular to the sliding direction of the limiting pin, and the limiting pin is limited by the bottom plate at the second mounting groove and the pin position by means that the raised edge abuts against the bottom wall of the second mounting groove and the raised ridges are exposed through the pin position on the front panel of the handle seat.

[0014] As a further improvement of this utility model, the handle includes a handle seat cover plate, the handle seat cover plate having a second through hole; the front panel of the handle seat has a convex ring surrounding the first through hole, the handle seat cover plate covers the front panel of the handle seat, and the convex ring on the front panel of the handle seat is embedded in the second through hole, the handle seat cover plate exposes the pin position by rotating relative to the convex ring.

[0015] As a further improvement of this utility model, the front panel of the handle seat has a boss, and the handle seat cover plate includes a sealing edge; the handle includes a cover spring, the cover spring is installed between the handle handle and the handle seat cover plate, and the cover spring pushes the handle seat cover plate to make the sealing edge wrap around the side of the boss; the handle seat cover plate pushes the cover spring to compress and cause the sealing edge to disengage from the boss, thereby rotating relative to the boss ring.

[0016] This utility model also provides a door and window lock, including a handle with a child safety lock structure as described above.

[0017] This utility model has the following beneficial effects: by sliding the limiting pin within the pin position, the steel ball in the second mounting groove is released or limited to the tooth's locking position, thereby realizing the locking and unlocking of the handle and improving the handle's safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a handle with a child safety lock structure provided in an embodiment of this utility model.

[0019] Figure 2 This is an exploded structural diagram of the handle with a child safety lock structure provided in this embodiment of the utility model.

[0020] Figure 3 This is a schematic diagram of the back of the handle with a child safety lock structure provided in this embodiment of the utility model.

[0021] Figure 4 This is a schematic diagram of the back of the handle seat in the middle of the handle with a child safety lock structure provided in this embodiment of the utility model.

[0022] Figure 5 This is a schematic diagram showing the installation of the steel ball, wheel teeth, limit bracket, and limit pin in the handle with child safety lock structure provided in this embodiment of the utility model onto the handle seat.

[0023] Figure 6 This is a schematic diagram showing the handle with child safety lock structure provided in this embodiment of the utility model changing from the unlocked state to the locked state.

[0024] Figure 7 This is a schematic diagram of the middle limiting pin and the base plate of the handle with child safety lock structure provided in this embodiment of the utility model.

[0025] The following are the reference numerals in the attached figures:

[0026] 10 Handle base 11 First mounting slot

[0027] 12 Second mounting slot 13 Pin position

[0028] 14 First through hole 15 Protruding ring

[0029] 16 Boss 17 Partition

[0030] 171 Connecting port 20 Handle

[0031] 30 tooth, 31 slot

[0032] 40 Limiting bracket 51 Steel balls

[0033] 52 Limit pin 521 Main body

[0034] 522 Push rod section 523 First limiting groove

[0035] 524 Second limiting groove 525 Raised edge

[0036] 526 Protruding ridge; 527 Curved sidewall

[0037] 528 Wedge surface 53 Base plate

[0038] 531 Spring clip 532 Fixing hole

[0039] 533 Top Block 54 Screw

[0040] 61 Handle seat cover plate 611 Second through hole

[0041] 62 Cover spring 63 Washer

[0042] 70mm intermediate screw, 80mm square steel Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0044] like Figure 1-2 The diagram shown is a structural schematic of a handle with a child safety lock provided in an embodiment of this utility model. This handle with a child safety lock can be installed on a window sash and, together with a linkage rod and locking points, enables the window sash to be locked and unlocked. Of course, this handle with a child safety lock can also be installed on a door sash and, in conjunction with a latch, enables the door sash to be locked and unlocked.

[0045] The child safety lock-equipped handle of this embodiment includes a handle base 10, a handle 20, a toothed wheel 30, a limiting bracket 40, a steel ball 51, a limiting pin 52, and a base plate 53. The handle 20, toothed wheel 30, limiting bracket 40, steel ball 51, limiting pin 52, and base plate 53 can be respectively installed onto the handle base 10. Similar to existing handles, the handle base 10 can be fixed to the window sash by screws (e.g., fixed to the sash frame by screws). After the limiting bracket 40 and toothed wheel 30 are installed onto the handle base 10, a middle screw 70 passes through the toothed wheel 30 and the handle base 10 and is threaded onto the handle 20, thereby fixing the toothed wheel 30, the limiting bracket 40, and the handle 20 to the handle base 10. The handle 20 can drive the toothed wheel 30 to rotate. Furthermore, the tooth 30 has a hole for the square steel 80 to be inserted, so that the tooth 30 can drive the square steel 80 to rotate, and the rotation of the square steel 80 can then drive the movement of the locking point. The shape and size of the handle seat 10, the shape and size of the limit frame 40, and the shape and size of the handle 20 can all adopt conventional solutions in the art, and will not be described in detail here.

[0046] Combination Figure 4 , Figure 5 As shown, the back of the aforementioned handle base 10 (i.e., the side that is in contact with the window sash after the handle is installed) has a first mounting groove 11 and a second mounting groove 12. The shape and size of the first mounting groove 11 are adapted to the shape and size of the limiting frame 40. The second mounting groove 12 is adjacent to the first mounting groove 11, and the partition 17 between the second mounting groove 12 and the first mounting groove 11 has a connecting opening 171. The limiting frame 40 is installed in the first mounting groove 11, and the limiting frame 40 has a clearance space opposite to the connecting opening 171.

[0047] The front panel of the handle base 10 (i.e., the side facing away from the window sash after the handle is installed) has a first through hole 14 and a latch position 13. The first through hole 14 extends from the front panel of the handle base 10 to the first mounting groove 11. The latch position 13 is adapted to the limiting latch 52 (i.e., after the limiting latch 52 is installed in the latch position, it can move in one direction within the latch position), and the latch position 13 is connected to the second mounting groove 12. The limiting bracket 40 has a mounting position adapted to the tooth 30. The tooth 30 is installed on the limiting bracket 40 and passes through the first through hole 14 to connect with the handle 20 (i.e., it is locked and fixed by the intermediate screw 70). The outer sidewall of the tooth 30 has at least one locking position 31, the sidewall of which is a smooth arc shape, and the handle 20 drives the tooth 30 to rotate so that the locking position 31 is adjacent to the communication opening 171 between the first mounting groove 11 and the second mounting groove 12. Other structures of the tooth 30 (i.e., apart from the locking position 31) can adopt conventional structures in the art, and will not be described in detail here.

[0048] In particular, when the aforementioned handle with child safety lock structure is applied to a mechanical handle, the aforementioned locking position 31 is composed of a locking position on the tooth 30 that engages with the ball bearing, causing the ball bearing to collide with the tooth 30 and generate mechanical vibration and a warning sound. For example, the tooth 30 may have four locking positions 31, and adjacent locking positions 30 are spaced 90° apart.

[0049] The steel ball 51 is installed in the second mounting groove 12, and the bottom opening of the second mounting groove 12 is sealed by the base plate 53 to prevent the steel ball 51 from falling out of the second mounting groove 12. Furthermore, the size of the steel ball 51 is adapted to the size of the connecting opening 171 and the locking position 31; that is, when the locking position 31 of the tooth 30 is adjacent to the connecting opening 171, the steel ball 51 can be embedded between the connecting opening 171 and the locking position 31. Those skilled in the art will understand that the size of the locking position 31 is smaller than the size of the steel ball 51, thus preventing the steel ball 51 from being securely embedded in the locking position 31, and instead placing it partially in the locking position 31 and partially in the connecting opening 171 or the second mounting groove 12. In practical applications, the steel ball 51 can also be made of other hard materials.

[0050] The limiting pin 52 is slidably fitted at the pin position 13, meaning that after the limiting pin 52 is fitted into the pin position 13, it can slide under the limiting of the pin position 13. At least a portion of the limiting pin 52 is embedded in the second mounting groove 12, and the limiting pin 52 prevents the steel ball 51 from exiting the locking position 31 by sliding within the pin position 13. That is, part of the steel ball 51 is located in the communication port 171 and part is located within the locking position 31, thereby preventing the gear tooth 30 from rotating (at this time, the square steel 80 fitted to the gear tooth 30 also cannot rotate, so the locking point cannot move). Those skilled in the art will understand that, since the side wall of the locking position 31 is a smooth arc, when the steel ball 51 is not limited by the limiting pin 52, the gear tooth 30 can also rotate, and its side wall will push the steel ball 51 out of the locking position 31. That is, when the steel ball 51 is not subjected to external force, the gear tooth 30 can maintain smooth rotation without being affected by the steel ball 51.

[0051] The aforementioned handle with child lock structure slides within the pin position 13 via the limiting pin 52, causing the steel ball 51 in the second mounting groove 12 to be released or limited at the locking position 31 of the tooth 30, thereby realizing the unlocking and locking of the handle and improving the safety of the handle.

[0052] like Figure 4 As shown, in one embodiment of this utility model, when the handle seat 10 is fixed to the window sash, the second mounting groove 12 is located above and to the side of the connecting opening 171. When the locking position 31 of the tooth 30 is adjacent to the connecting opening 171 (i.e., the tooth 30 rotates to the point where its locking position 31 is adjacent to the connecting opening 171), the steel ball 51 located in the second mounting groove 12 is pushed between the connecting opening 171 and the locking position 31 by the limiting pin 52. Of course, in practical applications, the relative position of the second mounting groove 12 can also be changed.

[0053] In one embodiment of this utility model, the partition 17 between the first mounting groove 11 and the second mounting groove 12 is annular, and the communication opening 171 is located in the middle of the partition 17. Accordingly, combined with Figure 7 As shown, the limiting pin 52 includes a push rod portion 522. When the limiting pin 52 is assembled into the pin position 13, the push rod portion 522 is embedded into the second mounting groove 12, and the side wall of the push rod portion 522 facing the first mounting groove 11 is arc-shaped, that is, the push rod portion 522 has an arc-shaped side wall 527 facing the first mounting groove 11. The limiting pin 52 prevents the steel ball 51 from exiting the locking position 31 of the tooth 30 through the arc-shaped side wall 527 of the push rod portion 522. Figure 6 As shown, by pushing the limiting pin, the gap between the arc-shaped sidewall 527 of its push rod portion 522 and the partition 17 between the first mounting groove 11 and the second mounting groove 12 is smaller than the diameter of the steel ball 51, thereby preventing the steel ball 51 from exiting the locking position of the tooth 30. The above structure can improve the stability of the handle locking.

[0054] like Figure 4 As shown, in one embodiment of this utility model, the width of the second mounting groove 12 adjacent to the connecting opening 171 is adapted to the diameter of the steel ball 51. This allows the steel ball 51 to exit into the second mounting groove 12 when the limiting pin 52 is in the unlocked state. When the limiting pin 52 is in the locked state, the push rod portion 522 of the limiting pin 52 is inserted into the connecting opening 171, making the gap between the connecting opening 171 and the push rod portion 522 smaller than the diameter of the steel ball 51, thus preventing the steel ball 52 from exiting the locking position 31 of the tooth 30. Furthermore, in the direction away from the connecting opening 171 (e.g., ... Figure 4 (From bottom to top) The width of the second mounting groove 12 gradually increases, which facilitates the sliding of the limiting pin 52.

[0055] In one embodiment of this utility model, the width of the second mounting groove 12 is adapted to the width of the limiting pin 52, and the free end of the arc-shaped sidewall 527 of the push rod portion 522 has a wedge surface 528. With the above structure, not only can the sliding direction of the limiting pin 52 be limited, but the wedge surface 528 can also push the steel ball 51 to be embedded into the connecting port 171 and the locking position 31 of the tooth 30.

[0056] like Figure 7 As shown, in one embodiment of the present invention, the limiting pin 52 includes a main body 521 and a push rod 522 connected to the main body 521 (for example, the push rod 522 is integral with the main body 521). When the limiting pin 52 is installed in the pin position 13, the bottom of the main body 521 is in contact with the upper surface of the base plate 53. In this way, the stability of the limiting pin 52 in the second mounting groove can be guaranteed.

[0057] The bottom of the main body 521 has a first limiting groove 523 and a second limiting groove 524. Correspondingly, the bottom plate 53 has a spring piece 531 protruding from the upper surface. When the limiting pin 52 slides to the point where the spring piece 531 is embedded in the first limiting groove 523, the arc-shaped side wall 527 of the push rod part 522 is adjacent to the communication port 171 and prevents the steel ball 51 from exiting the locking position 31. That is, at this time, the handle (i.e., the tooth 30) is in a locked state. When the limiting pin 52 slides to the point where the spring piece 531 is embedded in the second limiting groove 524, the arc-shaped side wall 527 of the push rod part 522 moves away from the communication port 171. That is, at this time, the handle is in an unlocked state. Due to the presence of the first limiting groove 523, the second limiting groove 524 and the spring piece 531, a certain amount of external force is required to push the limiting pin 52 to slide within the pin position 13, thereby ensuring that the limiting pin 52 remains stable without being subjected to external force. For example, when the handle is locked, the handle 20 will not be turned too hard, causing the steel ball 51 to exit from the locking position 31, thus resulting in the handle being unlocked.

[0058] Specifically, the base plate 53 may have top blocks 533 at both ends. For example, the two top blocks 533 may be formed by vertically bending the ends of the base plate 53. When the handle seat 10 is fixed to the window sash, the top blocks 533 abut against the surface of the window sash (e.g., the sash frame) to increase the supporting force of the base plate 53 on the limiting pin 52. In addition, the base plate 53 may have fixing holes 532, and the base plate 53 is fixed to the handle seat 10 by screws 54 passing through the fixing holes 532 (the handle seat 10 has screw holes).

[0059] In one embodiment of this utility model, the side wall of the main body 521 of the limiting pin 52 has a protruding edge 525, the width of the outer periphery of the protruding edge 525 is greater than the width of the pin position 13, and the top surface of the main body 521 has a plurality of protruding ridges 526 perpendicular to the sliding direction of the limiting pin 52. The limiting pin 52 is limited by the base plate 53 at the second mounting groove 12 and the pin position 13 in such a way that the protruding edge 525 abuts against the bottom wall of the second mounting groove 12, and the protruding ridges 526 protrude through the pin position 13 onto the front panel of the handle seat 10 (i.e., the protruding ridges 526 are visible from the front of the front panel, rather than the protruding ridges 526 protruding from the front panel). The above structure can prevent the limiting pin 52 from coming out of the pin position 13, and also facilitates the locking and unlocking operation of the handle by pushing the limiting pin 52 on the front side of the handle seat 10.

[0060] In one embodiment of this utility model, the handle with child lock structure further includes a handle seat cover plate 61, which has a second through hole 611. Correspondingly, the front panel of the handle seat 10 has a raised ring 15 surrounding the first through hole 14. The handle seat cover plate 61 covers the front panel of the handle seat 10, and the raised ring 15 on the front panel of the handle seat 10 is embedded in the second through hole 611 (a part of the raised ring is also embedded in the handle 10). The handle seat cover plate 61 rotates relative to the raised ring 15 to expose the latch position 13. The above structure can hide the latch position 13 while ensuring the overall appearance of the handle, making it difficult for children to find the limiting latch 52, further improving safety.

[0061] Specifically, the front panel of the aforementioned handle seat 10 has a boss 16, and the handle seat cover 61 includes a sealing edge (i.e., an edge extending vertically to one side from the edge). The aforementioned handle with child lock structure also includes a cover spring 62, which is installed between the handle handle 20 and the handle seat cover 61. The cover spring 62 pushes the handle seat cover 61 to make the sealing edge wrap around the side of the boss 16, thereby ensuring the consistency of the overall handle appearance. The handle seat cover 61 compresses the cover spring 62 to disengage the sealing edge from the boss 16, thereby allowing the handle seat cover 61 to rotate relative to the convex ring 15, facilitating the exposure of the pin position 13. In addition, to keep the tooth 30 in the center of the first through hole 14 and prevent it from colliding or rubbing against the side wall of the first through hole 14, a washer 63 can be added, which can be in contact with the side wall of the first through hole 14.

[0062] This utility model also provides a door and window lock, including a handle with a child safety lock structure as described above.

[0063] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A handle with a child safety lock structure, characterized in that, The device includes a handle base, handle, wheel teeth, limit bracket, steel ball, limit pin, and base plate. The back of the handle base has a first mounting groove adapted to the limit bracket and a second mounting groove adjacent to the first mounting groove. The partition between the second mounting groove and the first mounting groove has a communication opening. The limit bracket is installed in the first mounting groove, and the limit bracket has a clearance space opposite to the communication opening. The front panel of the handle seat has a first through hole extending into the first mounting groove and a pin position adapted to the limiting pin, and the pin position is connected to the second mounting groove; the tooth is mounted on the limiting frame, the tooth passes through the first through hole and is connected to the handle, the outer side wall of the tooth has at least one locking position, the side wall of the locking position is a smooth arc, and the handle drives the tooth to rotate so that the locking position is connected to the communication port; The size of the steel ball is adapted to the size of the connecting port and the locking position. The steel ball is installed in the second mounting groove, and the bottom opening of the second mounting groove is sealed by the base plate. The limiting pin is slidably assembled at the pin position. At least a part of the limiting pin is embedded in the second mounting groove, and the limiting pin prevents the steel ball embedded in the connecting port and the locking position from exiting by sliding in the pin position, thereby preventing the gear teeth from rotating.

2. The handle with child safety lock structure according to claim 1, characterized in that, When the handle seat is fixed to the door or window sash, the second mounting groove is located above the side of the connecting opening, and when the toothed locking position is adjacent to the connecting opening, the steel ball located in the second mounting groove is pushed into the space between the connecting opening and the locking position by the limiting pin.

3. The handle with child safety lock structure according to claim 1, characterized in that, The partition between the first mounting slot and the second mounting slot is annular, and the communication port is located in the middle of the partition. The limiting pin includes a push rod portion. When the limiting pin is assembled into the pin position, the push rod portion is embedded in the second mounting slot, and the push rod portion has an arc-shaped sidewall facing the first mounting slot. The limiting pin prevents the steel ball from exiting the locking position through the arc-shaped sidewall of the push rod portion.

4. The handle with child safety lock structure according to claim 3, characterized in that, The width of the second mounting groove adjacent to the communication port is adapted to the diameter of the steel ball, and the width of the second mounting groove gradually increases in the direction away from the communication port.

5. The handle with child safety lock structure according to claim 4, characterized in that, The width of the second mounting groove is adapted to the width of the limiting pin, and the free end of the arc-shaped sidewall of the push rod has a wedge surface.

6. The handle with child safety lock structure according to claim 3, characterized in that, The limiting pin includes a main body, the push rod is connected to the main body, and when the limiting pin is installed in the pin position, the bottom of the main body is in contact with the upper surface of the base plate. The bottom of the main body has a first limiting groove and a second limiting groove. The base plate has a spring piece protruding from the upper surface. When the limiting pin slides to the point where the spring piece is embedded in the first limiting groove, the arc-shaped sidewall of the push rod is adjacent to the communication port and prevents the steel ball from exiting the locking position. When the limiting pin slides to the point where the spring piece is embedded in the second limiting groove, the arc-shaped sidewall of the push rod moves away from the communication port.

7. The handle with child resistant locking structure of claim 6, wherein, The side wall of the main body of the limiting pin has a raised edge, the width of the outer periphery of the raised edge is greater than the width of the pin position, and the top surface of the main body has a number of raised ridges perpendicular to the sliding direction of the limiting pin. The limiting pin is limited by the bottom plate at the second mounting groove and the pin position by means that the raised edge abuts against the bottom wall of the second mounting groove and the raised ridges are exposed through the pin position on the front panel of the handle seat.

8. The handle with child safety lock structure according to claim 1, characterized in that, The handle includes a handle seat cover plate with a second through hole; the front panel of the handle seat has a protruding ring surrounding the first through hole, the handle seat cover plate covers the front panel of the handle seat, and the protruding ring on the front panel of the handle seat is embedded in the second through hole, and the handle seat cover plate exposes the pin position by rotating relative to the protruding ring.

9. The handle with child safety lock structure according to claim 8, characterized in that, The front panel of the handle seat has a boss, and the handle seat cover includes a sealing edge; the handle includes a cover spring, which is installed between the handle handle and the handle seat cover, and the cover spring pushes the handle seat cover to make the sealing edge wrap around the side of the boss; the handle seat cover compresses the cover spring to make the sealing edge disengage from the boss, and then rotates relative to the boss ring.

10. A door and window lock, characterized in that, Includes a handle with a child safety lock structure as described in any one of claims 1-9.

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