A child lock mechanism for a safety door and its working method

Abstract

The present invention discloses a child lock mechanism for a safety door, comprising a door frame and a door body, wherein the door frame is provided with a keyhole component, the door body is provided with a handle component at a position corresponding to the keyhole component, the handle component is provided with a door lock assembly that cooperates with the keyhole component, the door body is provided with a rotating lifting seat at a side position away from the door lock assembly, the door body and the door frame are connected by the rotating lifting seat, the door body can be moved in a vertical direction relative to the door frame to disengage the door lock assembly from the keyhole component, and the door body can be rotated relative to the door frame to separate the door lock assembly from the keyhole component, thereby realizing double unlocking; the overall structure of the present invention is safe and reliable, can effectively avoid the danger caused by children opening the door by mistake due to curiosity, and improves the safety of the safety door.

Description

Technical Field

[0001] The present invention relates to the technical field of door lock devices, and in particular to a child lock mechanism for a safety door. Background Art

[0002] In order to prevent children from operating the crib or child guardrail accidentally, which may cause safety hazards, child locks need to be equipped. Currently, the child locks on the market are relatively simple in form, and generally use a combination of multiple locking structures to avoid safety accidents caused by one of them being accidentally opened. Although multiple locking structures can prevent children from opening the crib intentionally, on the one hand, the cost is relatively high, and on the other hand, the operation is relatively cumbersome when opening and closing the door. Therefore, the design of the existing child lock mechanism is still imperfect. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides a child lock mechanism for a safety door with a reasonable structural design and a dual unlocking function.

[0004] The technical solutions of the present invention are as follows:

[0005] A child lock mechanism for a safety door comprises a door frame and a door body, wherein the door frame is provided with a keyhole component, the door body is provided with a handle component at a position corresponding to the keyhole component, the handle component is provided with a door lock assembly that cooperates with the keyhole component, the door body is provided with a rotating lifting seat at a side away from the door lock assembly, the door body and the door frame are connected via the rotating lifting seat, the door body can move in a vertical direction relative to the door frame to disengage the door lock assembly from the keyhole component, and the door body can rotate relative to the door frame to separate the door lock assembly from the keyhole component, thereby achieving double unlocking.

[0006] Furthermore, the door lock assembly includes a button assembly, a first telescopic head assembly and a second telescopic head assembly. The button assembly is cooperatively arranged on a handle piece, the first telescopic head assembly is arranged on the button assembly, and the first telescopic head assembly can move with the button assembly; the second telescopic head assembly is fixedly arranged on the handle piece, and the first telescopic head assembly is arranged above the second telescopic head assembly.

[0007] Furthermore, the end face of the locking hole member is provided with an L-shaped locking hole and a mouth-shaped locking hole corresponding to the first telescopic head assembly and the second telescopic head assembly respectively, and the vertical lock hole top surface of the L-shaped locking hole and the mouth-shaped locking hole top surface are both slope structures.

[0008] Furthermore, there are two rotating lifting seats, including an upper rotating lifting seat and a lower rotating lifting seat. The upper rotating lifting seat is arranged at the top position of the door body, and the lower rotating lifting seat is arranged at the bottom position of the door body, and the lower rotating lifting seat can limit the movement of the door body in the vertical direction.

[0009] Furthermore, the upper rotating lifting seat includes an upper rotating lifting seat body arranged on the door frame and an upper rotating lifting seat end cap arranged on the door body, and the guide hole of the upper rotating lifting seat end cap cooperates with the guide column of the upper rotating lifting seat body.

[0010] Furthermore, the lower rotating lifting seat includes a lower rotating lifting seat main body arranged on the door frame, a lower rotating lifting seat end cap and a spring member arranged on the door body. The guide hole column of the lower rotating lifting seat end cap is cooperated and arranged in the guide column of the lower rotating lifting seat main body. The guide hole column is provided with a limiting hole along its axial direction. The spring member is arranged in the limiting hole, and a screw is passed through the middle of the spring member, and after passing through the limiting hole, it is locked to the top of the guide column of the lower rotating lifting seat main body.

[0011] Furthermore, the door lock assembly is arranged at the top position of the door body, and a bottom lock is provided at the bottom of the door body and at the same side position of the door lock assembly. The bottom lock includes a third telescopic head seat, a third telescopic head, a door stop member and a third return spring. The third telescopic head seat is fixedly set on the door body, the door stop member is set on the door frame, the third telescopic head is set on the third telescopic head seat, the third return spring is set between the third telescopic head seat and the third telescopic head, and the door stop member is provided with a mouth-shaped lock hole that cooperates with the third telescopic head, and the top surface of the mouth of the mouth-shaped lock hole is a slope structure.

[0012] Furthermore, the button assembly includes a button and a button cover, the first telescopic head assembly includes a first telescopic head and a first return spring, the button is provided with a first telescopic head seat, the first telescopic head is cooperatedly arranged on the first telescopic head seat, and the first return spring is arranged between the first telescopic head and the first telescopic head seat; the second telescopic head assembly includes a second telescopic head, a second return spring and a second telescopic head seat, the second telescopic head is cooperatedly arranged on the second telescopic head seat, and the second return spring is arranged between the second telescopic head and the second telescopic head seat.

[0013] Furthermore, a door stopper is provided on the door frame above the door stopper to prevent the door body from opening in the reverse direction, and the principle is the same as that of the door stopper on the bottom lock.

[0014] A working process of a child lock mechanism for a safety door includes the following steps:

[0015] Door opening process:

[0016] 1) Press the button to push the first telescopic head from the horizontal lock hole of the L-shaped lock hole to the vertical lock hole;

[0017] 2) Lift the entire door upward at the handle position. At this time, the spring set in the lower connecting seat is compressed. Continue to lift until the spring is compressed to the limit position;

[0018] 3) At this time, the first telescopic head, the second telescopic head and the third telescopic head are all in the limit state of contraction and just disengage from the corresponding lock holes, pushing the door body outward, and the door body moves relative to the door frame to open the door.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1) The door lock assembly is equipped with two telescopic heads, of which the uppermost one is connected to the button. The upper and lower limit releases can be achieved under the drive of the button. At the same time, the rotating lifting seat can realize the up and down movement and rotation of the door body around the axis, thereby realizing the double unlocking function.

[0021] 2) A bottom lock is provided on the door body below the door lock assembly. The telescopic head of the bottom lock can be automatically unlocked during the door lifting process. When used in conjunction with the door lock assembly, it can improve the stability of the connection between the door body and the door frame.

[0022] 3) A spring is provided on the lower rotating lifting seat, which provides resistance to the door during lifting, preventing children from lifting the door easily and improving locking safety.

[0023] 4) The overall structure of the present invention is safe and reliable, which can effectively prevent the danger caused by children opening the door by mistake due to curiosity, thereby improving the safety of the safety door. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is an exploded view of the overall structure of the present invention;

[0026] Figure 3 This is a schematic structural diagram of a door lock assembly according to the present invention;

[0027] Figure 4 It is an enlarged view of the local structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the lower rotating lifting seat of the present invention;

[0029] Figure 6 This is a diagram showing the door body of the present invention in a lifting limit state;

[0030] Figure 7 This is a diagram showing the door body of the present invention in an open state;

[0031] In the figure: 1. Lock hole component; 2. First telescopic head; 3. Second telescopic head; 4. Second return spring; 5. Second telescopic head seat; 6. Button; 7. Button cover; 8. First handle sub-component; 9. Second handle sub-component; 10. First return spring; 11. Door stopper body; 12. Door stopper cover body; 13. Upper rotating lifting seat end cap; 14. Upper rotating lifting seat body; 15. Lower rotating lifting seat body; 16. Spring component; 17. Lower rotating lifting seat end cap; 18. Third telescopic head seat; 19. Door stopper; 20. Door body; 21. Door frame; 22. Third return spring; 23. Upper rotating lifting seat; 24. Handle component; 25. Lower rotating lifting seat; 26. Bottom lock component; 27. Door lock assembly; 28. Door stopper; 29. ​​L-shaped lock hole; 30. Mouth-shaped lock hole; 31. Third telescopic head. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] like Figure 1-7 As shown, a child lock mechanism for a safety door includes a door frame 21, a door body 20, a lock hole member 21, a handle member 24, a door lock assembly 27, an upper rotating lifting seat 23, a lower rotating lifting seat 25 and a bottom lock member 26.

[0034] The lock hole component 1 is arranged at the top position of the door frame 21, and a handle piece 24 is provided on the door body 20 at a position corresponding to the lock hole component 1, and a door lock assembly 27 cooperating with the lock hole component 1 is provided on the handle piece 24. A bottom lock component 26 is provided at the bottom of the door body 20 and on the same side of the door lock assembly 27; two rotating pulling seats are provided on the door body 20 at a side away from the door lock assembly 27, including an upper rotating pulling seat 23 arranged at the top of the door body 20 and a bottom lock component 26 arranged at the bottom of the door body 20; the door body 20 and the door frame 21 are connected by two upper and lower rotating pulling seats, so that the door body 20 can move in the vertical direction relative to the door frame 21, so that the door lock assembly 27 is disengaged from the lock hole component 1, and the door body 20 can rotate relative to the door frame 21, so that the door lock assembly 27 is separated from the lock hole component 1, thereby realizing double unlocking of the door body during the opening process.

[0035] The door lock assembly 27 includes a button assembly, a first telescopic head assembly, and a second telescopic head assembly. The button assembly is cooperatively mounted on the handle 24. The first telescopic head assembly is mounted on the button assembly and can move with the button assembly. The second telescopic head assembly is fixedly mounted on the handle 24, and the first telescopic head assembly is positioned above the second telescopic head assembly. Specifically, the button assembly includes a button 6 and a button cover 7. The first telescopic head assembly includes a first telescopic head 2 and a first return spring 10. The button 6 is provided with a first telescopic head seat. The first telescopic head 2 is cooperatively mounted on the first telescopic head seat. The first return spring 10 is positioned between the first telescopic head 2 and the first telescopic head seat. The second telescopic head assembly includes a second telescopic head 3, a second return spring 4, and a second telescopic head seat 5. The second telescopic head 3 is cooperatively mounted on the second telescopic head seat 5. The second return spring 4 is positioned between the second telescopic head 3 and the second telescopic head seat 5.

[0036] The end face of the lock hole component 1 is provided with an L-shaped lock hole 29 and a mouth-shaped lock hole 30 corresponding to the first telescopic head assembly and the second telescopic head assembly respectively, and the vertical lock hole top surface of the L-shaped lock hole 29 and the top surface of the mouth-shaped lock hole 30 are both slope structures; the slope structure can cooperate with the first and second telescopic heads. During the lifting process of the door body, the telescopic head contacts the slope structure, squeezing the telescopic head inward, thereby disengaging from the corresponding lock hole, preparing for opening and unlocking the door.

[0037] The upper rotating and pulling seat 23 is arranged at the top position of the door body 20, and the lower rotating and pulling seat 25 is arranged at the bottom position of the door body 20, and the lower rotating and pulling seat 25 can limit the movement of the door body 20 in the vertical direction.

[0038] The upper rotating lifting seat 23 includes an upper rotating lifting seat main body 14 arranged on the door frame 21 and an upper rotating lifting seat end cap 13 arranged on the door body 20. The guide hole of the upper rotating lifting seat end cap 13 cooperates with the guide column of the upper rotating lifting seat main body 14. When the door body moves up and down, the guide column on the upper rotating lifting seat main body 14 can guide the upper rotating lifting seat end cap 13.

[0039] The lower rotating lifting seat 25 includes a lower rotating lifting seat body 15 arranged on the door frame 21, a lower rotating lifting seat end cap 17 and a spring member 16 arranged on the door body 20. The guide hole column of the lower rotating lifting seat end cap 17 is cooperated and arranged in the guide column of the lower rotating lifting seat body 15. The guide hole column is provided with a limiting hole along its axial direction. The spring member 16 is arranged in the limiting hole and is locked to the top of the guide column of the lower rotating lifting seat body 15 by a screw. Unlike the upper rotating lifting seat 23, the spring member 16 of the lower rotating lifting seat 25 can be compressed during the lifting process of the door body, so that there is resistance during the lifting process of the door body, and it is not easy for children to lift it, thereby improving the safety of the child lock.

[0040] The bottom lock 26 includes a third telescopic head seat 18, a third telescopic head 31, a door stop 19 and a third return spring 22. The third telescopic head seat 18 is fixedly set on the door body 20, the door stop 19 is set on the door frame 21, the third telescopic head 31 is set on the third telescopic head seat 18, and the third return spring 22 is set between the third telescopic head seat 18 and the third telescopic head 31. The door stop 19 is provided with a mouth-shaped lock hole 30 that cooperates with the third telescopic head 31, and the top surface of the mouth of the mouth-shaped lock hole 30 is a slope structure. The principle of cooperation between the slope structure and the third telescopic head 31 here is the same as the above-mentioned door lock assembly.

[0041] A door stopper 28 is provided on the door frame 21 above the door stopper 19 . The door stopper 28 includes a door stopper body 11 and a door stopper cover 12 . The function of the door stopper 28 is to prevent the door from opening in the reverse direction.

[0042] The handle member 24 includes a first handle sub-member 8 and a second handle sub-member 9. The first handle sub-member 8 and the second handle sub-member 9 are spliced ​​together and installed at the top of the door body by bolts. The handle member 24 is provided with grooves and holes for installing the button assembly. The button assembly is cooperatedly arranged on the handle member 24. When pressing the button, the button can move inward and can automatically reset after releasing it.

[0043] The working process of the child lock mechanism of the safety door includes the following steps:

[0044] Door opening process:

[0045] 1) Press and hold the button in place, and push the first telescopic head from the horizontal lock hole of the L-shaped lock hole to the vertical lock hole;

[0046] 2) Keep the button pressed and lift the entire door upward at the handle position. At this time, the spring set in the lower connecting seat is compressed. Continue to lift until the spring is compressed to the limit position;

[0047] 3) At this time, the first telescopic head, the second telescopic head and the third telescopic head are all in the limit of contraction and just disengage from the corresponding lock holes, pulling the door body outward, and the door body moves relative to the door frame to open the door;

[0048] Closing process:

[0049] 4) The door body automatically closes under the action of the upper rotating lifting seat and the lower rotating lifting seat, wherein the upper rotating lifting seat end cap and the upper rotating lifting seat body of the upper rotating lifting seat are respectively provided with oblique cuts. After releasing the hand, the door body moves relative to the door frame. When the first telescopic head, the second telescopic head and the third telescopic head come into contact with the lock hole member, they directly squeeze the first telescopic head, the second telescopic head and the third telescopic head to shrink until the first telescopic head, the second telescopic head and the third telescopic head enter the corresponding lock hole, thereby realizing automatic locking of the door.

[0050] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A child lock mechanism for a safety door, comprising a door frame (21) and a door body (20), characterized in that: The door frame (21) is provided with a lock hole component (1), the door body (20) is provided with a handle component (24) at a position corresponding to the lock hole component (1), the handle component (24) is provided with a door lock component (27) that cooperates with the lock hole component (1), the door body (20) is provided with a rotating lifting seat at a side position away from the door lock component (27), the door body (20) and the door frame (21) are connected via the rotating lifting seat, the door body (20) can move in the vertical direction relative to the door frame (21) to disengage the door lock component (27) from the lock hole component (1), and the door body (20) can rotate relative to the door frame (21) to separate the door lock component (27) from the lock hole component (1), thereby realizing double unlocking; The door lock assembly (27) includes a button assembly, a first telescopic head assembly, and a second telescopic head assembly. The button assembly is cooperatively arranged on the handle (24). The first telescopic head assembly is arranged on the button assembly and can move with the button assembly. The second telescopic head assembly is fixedly arranged on the handle (24), and the first telescopic head assembly is arranged above the second telescopic head assembly. The end surface of the lock hole member (1) is provided with an L-shaped lock hole (29) and a mouth-shaped lock hole corresponding to the first telescopic head assembly and the second telescopic head assembly respectively, and the top surface of the vertical lock hole opening of the L-shaped lock hole (29) and the top surface of the mouth-shaped lock hole opening are both slope structures; The button assembly comprises a button (6) and a button cover (7); the first telescopic head assembly comprises a first telescopic head (2) and a first return spring (10); a first telescopic head seat is provided on the button (6); the first telescopic head (2) is cooperatively arranged on the first telescopic head seat; the first return spring (10) is arranged between the first telescopic head (2) and the first telescopic head seat; the second telescopic head assembly comprises a second telescopic head (3), a second return spring (4) and a second telescopic head seat (5); the second telescopic head (3) is cooperatively arranged on the second telescopic head seat (5); the second return spring (4) is arranged between the second telescopic head (3) and the second telescopic head seat (5).

2. A child safety door lock mechanism according to claim 1, characterized in that: The rotating lifting seat is provided with two, including an upper rotating lifting seat (23) and a lower rotating lifting seat (25), wherein the upper rotating lifting seat (23) is arranged at the top position of the door body (20), and the lower rotating lifting seat (25) is arranged at the bottom position of the door body (20), and the lower rotating lifting seat (25) can limit the movement of the door body (20) in the vertical direction.

3. A child safety door lock mechanism according to claim 2, characterized in that: The upper rotating lifting seat (23) includes an upper rotating lifting seat body (14) arranged on the door frame (21) and an upper rotating lifting seat end cap (13) arranged on the door body (20), and the guide hole of the upper rotating lifting seat end cap (13) cooperates with the guide column of the upper rotating lifting seat body (14).

4. A child safety door lock mechanism according to claim 3, characterized in that: The lower rotating lifting seat (25) includes a lower rotating lifting seat body (15) arranged on the door frame (21), a lower rotating lifting seat end cap (17) and a spring member (16) arranged on the door body (20), the guide hole column of the lower rotating lifting seat end cap (17) is cooperated and arranged in the guide column of the lower rotating lifting seat body (15), the guide hole column is provided with a limiting hole along its axial direction, the spring member (16) is arranged in the limiting hole, and is screwed through the middle of the spring member and locked to the top of the guide column of the lower rotating lifting seat body (15) after passing through the limiting hole.

5. A child safety door lock mechanism according to claim 1, characterized in that: The door lock assembly (27) is arranged at the top position of the door body (20), and a bottom lock piece (26) is provided at the bottom of the door body (20) and at the same side position as the door lock assembly (27). The bottom lock piece (26) includes a third telescopic head seat (18), a third telescopic head (31), a door stop piece (19) and a third return spring (22). The third telescopic head seat (18) is fixedly arranged on the door body (20), the door stop piece (19) is arranged on the door frame (21), the third telescopic head (31) is arranged on the third telescopic head seat (18), and the third return spring (22) is arranged between the third telescopic head seat (18) and the third telescopic head (31). The door stop piece (19) is provided with a mouth-shaped lock hole that cooperates with the third telescopic head (31), and the top surface of the mouth of the mouth-shaped lock hole is a slope structure.

6. A child lock mechanism for a safety door according to claim 5, characterized in that: A door stopper (28) is provided on the door frame (21) above the door stopper (19).

7. The operating method of a child lock mechanism for a safety door according to claim 5, characterized in that: The steps include: Door opening process: 1) Press the button to push the first telescopic head from the horizontal lock hole of the L-shaped lock hole to the vertical lock hole; 2) Lift the entire door upward at the handle position. At this time, the spring set in the lower connecting seat is compressed. Continue to lift until the spring is compressed to the limit position; 3) At this time, the first telescopic head, the second telescopic head and the third telescopic head are all in the limit state of contraction and just disengage from the corresponding lock holes, pushing the door body outward, and the door body moves relative to the door frame to open the door.

Images