Oven lock capable of being prevented from being opened by children

Abstract

The oven lock can be opened only through two continuous actions and comprises a lock seat (1) and a telescopic tongue (2). The telescopic tongue (2) can stretch out or retract from the lock seat (1), a containing cavity used for containing the telescopic tongue (2) and suitable for the telescopic tongue (2) to slide relative to the lock seat (1) is formed in the lock seat (1), one side of the containing cavity is provided with an opening end allowing the telescopic tongue (2) to stretch out or retract back, and a driving mechanism used for driving the telescopic tongue (2) to stretch out or retract from the lock seat (1) is arranged between the lock seat (1) and the telescopic tongue (2); the extension state of the telescopic tongue (2) is a locked state and a normal state, and the retraction state of the telescopic tongue (2) is an unlocked state and an abnormal state; the refrigerator door lock can be opened only through two continuous actions, locking and unlocking operation is very convenient, and the refrigerator door lock can be effectively prevented from being opened by children.

Description

Technical Field

[0001] This utility model relates to an oven lock that prevents young children from opening it; this oven lock that prevents young children from opening it is especially suitable for ovens, and can also be used in cabinets, drawers, etc. Background Technology

[0002] Preventing self-harm by young children is crucial for families with young children. Young children are naturally curious and active, which is essential for their physical and intellectual development. However, they lack the ability to distinguish between safe and dangerous behaviors, especially children under four. Even with adult supervision, it's impossible to constantly monitor a child's behavior. Children often engage in unexpected actions that could lead to self-harm, such as opening cabinet doors, refrigerator doors, ovens, drawers, toilet seats, etc., or touching or accidentally swallowing potentially harmful items. Installing child-proof locks on furniture containing potentially dangerous items is an effective measure. For example, ovens get very hot during and after baking, and a child could suffer severe burns if they touch them; installing an oven lock is an effective way to prevent children from opening the oven. With modern people's increasing demands for quality of life, these child-proof locks, as accessories to modern furniture, must not only prevent children from opening them but also, because they are not anti-theft locks, be easy for adults to open. They must also be lightweight, aesthetically pleasing, easy to install and use, and environmentally friendly.

[0003] Current child-proof locks typically have a button for unlocking; pressing the button usually opens the lock. Existing child-proof oven locks, for example, only require turning a central button. However, this is not an effective way to prevent children from opening them. These locks, which can be opened with a single press, can still be accidentally opened by a child, potentially causing injury. Furthermore, current child-proof locks suffer from drawbacks such as being structurally inefficient, aesthetically unappealing, inconvenient to install and use, and environmentally unfriendly. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide an oven lock that requires two consecutive actions to open, preventing children from accidentally opening it, thus addressing the aforementioned technical limitations.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An oven lock designed to prevent young children from opening includes a lock seat and a telescopic tongue. The telescopic tongue can extend or retract from the lock seat. The lock seat has a receiving cavity for accommodating and allowing the telescopic tongue to slide relative to it. One side of the receiving cavity has an open end for the telescopic tongue to extend or retract. A drive mechanism is provided between the lock seat and the telescopic tongue for driving the telescopic tongue to extend or retract from the lock seat. The extended state of the telescopic tongue is the locked state and is the normal state, while the retracted state of the telescopic tongue is the unlocked state and is the abnormal state.

[0007] The following are further solutions.

[0008] The lock base includes an open housing with an opening at the bottom and a main bottom cover plate suitable for attaching to the side of the oven door. The open housing includes a top wall, four sides, and two symmetrically arranged inner straight walls. The receiving cavity is formed between the main bottom cover plate, the top wall, and the two inner straight walls. The driving mechanism is configured as follows: it includes a knob and a gear. The knob includes a disc with a protrusion on the top suitable for finger twisting and a downward-extending circle below the disc. The inner wall of the circle is provided with raised ribs. A circular recess is formed in the top wall of the lock base, and a central circular hole is formed in the circular recess. The gear component includes a large cylinder, a medium cylinder, and a small cylinder. A gear is arranged on the outer periphery of the large cylinder, and a grooved strip that matches the convex rib is arranged on the medium cylinder. The small cylinder of the gear component passes through the central circular hole of the top wall of the lock seat and is fixedly connected to the knob component, so that the knob component can slide up and down relative to the gear component based on the cooperation relationship between the convex rib and the grooved strip. The telescopic tongue includes a tongue-shaped part and a block-shaped part that can slide in the receiving cavity. The tongue-shaped part of the telescopic tongue faces outward, the middle of the block-shaped part is empty, and at least one side of the block-shaped part is provided with a rack that matches the gear.

[0009] The knob has a raised block with a recessed top and a central hole. The drive mechanism is also equipped with a T-shaped component, which includes an upper block suitable for embedding in the recessed top and a downwardly extending cylindrical tip. A compression spring is fitted around the cylindrical tip, passes through the central hole, and inserts into the inner hole of the small cylinder. The compression spring is fitted around the cylindrical tip, so that it fits around the small cylinder. The upper end of the compression spring rests against the lower part of the upper block, and the lower end is locked against the upper end of the middle cylinder. During assembly, strong glue is applied between the upper block of the T-shaped component and the recessed top, and between the cylindrical tip of the T-shaped component and the inner wall of the small cylinder of the gear component, to achieve a fixed connection between the small cylinder of the gear component, the T-shaped component, and the knob.

[0010] In the circular recess on the top wall of the open housing, a pair of small raised cylinders are symmetrically arranged vertically. The knob's disc has upward recesses at intervals below, suitable for the small raised cylinders to sink into. The upward recesses are evenly distributed along the circumference of the disc. In the circular recess on the top wall of the open housing, a pair of small recesses are symmetrically arranged horizontally. Correspondingly, the knob's disc has one or a pair of downward protruding blocks that can sink into the small recesses below it. Small protrusions are provided next to the small recesses as stops.

[0011] The upward-facing indentations are evenly distributed in 10 places along the circumference of the disk, with a 36-degree arc interval between two adjacent upward-facing indentations; or, the upward-facing indentations are evenly distributed in 12 places along the circumference of the disk, with a 30-degree arc interval between two adjacent upward-facing indentations.

[0012] The top wall of the open shell has a U-shaped notch around the protruding small cylinder, making the protruding small cylinder and its side top wall into a peninsula-shaped elastic element.

[0013] The upper block of the T-shaped component is spindle-shaped, and the top recess of the protruding block of the knob component is also spindle-shaped.

[0014] All components of the oven lock, except for the compression spring which is a metal part, are plastic injection molded parts; a short section of the compression spring is provided at the base of the cylindrical tip of the T-shaped part.

[0015] The main bottom cover plate is provided with a raised cylinder, so that the large cylinder of the gear component is fitted on the outside after assembly; an upwardly extending vertical column is provided on the upper side of the main bottom cover plate, and a column insertion notch is opened on the upper side of the top wall of the opening shell for inserting the vertical column into a matching notch, and the vertical column just passes through the column insertion notch on the top wall of the opening shell.

[0016] A tongue base cover is provided under the tongue-shaped part of the telescopic tongue.

[0017] Compared to existing lock technologies that require only a single button press to open, this new lock, designed to prevent toddlers from opening it, requires two consecutive actions to unlock. For adults familiar with the method, the unlocking operation is very convenient, as both pulling and turning the knob can be easily performed with one hand. However, for toddlers who are unaware of the unlocking method and have intellectual disabilities, it is virtually impossible for them to open the lock, no matter how randomly they press the buttons. The probability of a toddler opening the lock by randomly pressing buttons is almost zero, effectively preventing toddlers from opening it.

[0018] The overall structure of this utility model lock designed to prevent children from opening it is reasonable. Except for the compression spring, which is suitable to be made of metal, all other parts are suitable to be made of plastic injection molded parts, which facilitates mass production, reduces costs, and has a beautiful and elegant appearance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional front view of the oven lock of this utility model designed to prevent children from opening it.

[0020] Figure 2 This is a three-dimensional schematic diagram of the bottom surface of the oven lock of this utility model designed to prevent children from opening it;

[0021] Figure 3 This is a three-dimensional view of the front of the open shell;

[0022] Figure 4 This is a three-dimensional schematic diagram of the bottom surface of the open shell;

[0023] Figure 5 A three-dimensional schematic diagram showing the engagement of the knob, gear, and telescopic tongue;

[0024] Figure 6 This is a three-dimensional front view of the telescopic tongue;

[0025] Figure 7 This is a three-dimensional schematic diagram of the bottom surface of the telescopic tongue;

[0026] Figure 8 This is a three-dimensional schematic diagram of the front of the knob component;

[0027] Figure 9 This is a three-dimensional schematic diagram of the bottom surface of the knob component;

[0028] Figure 10 A three-dimensional schematic diagram of the T-shaped component and the compression spring in action;

[0029] Figure 11 This is a three-dimensional schematic diagram of the gear component;

[0030] Figure 12 This is a three-dimensional schematic diagram of the main bottom cover plate.

[0031] The parts indicated by the numbers in each diagram are: 1. Lock base; 2. Telescopic tongue; 3. Opening housing; 4. Main bottom cover plate; 5. Top wall; 6. Surrounding walls; 7. Inner straight wall; 8. Knob; 9. Gear; 10. Disc; 11. Protrusion; 12. Circle; 13. Protruding rib; 14. Circular recess; 15. Central circular hole; 16. Large cylinder; 17. Middle cylinder; 18. Small cylinder; 19. Gear; 20. Groove rib; 21. Tongue-shaped part; 22. Block-shaped part; 23. Rack; 24. Top recess; 25. T-shaped part; 26. Upper block; 27. Cylindrical tip; 28. Compression spring; 29. ​​Protruding small cylinder; 30. Upward recess; 31. Small recess; 32. 33. Small protrusion; 34. U-shaped notch; 35. Side top wall; 36. Tightly fitted section; 37. Protruding cylinder; 38. Vertical column; 39. Column insertion notch; 40. Tongue bottom cover plate; 41. Center hole; 42. Inner hole. Detailed Implementation

[0032] The following is Figures 1 to 11 The diagram illustrates the specific embodiments of this utility model. Except for the compression spring 28, which is suitable to be made of metal, all other components of the oven lock designed to prevent children from opening it are suitable to be made of plastic injection molded parts.

[0033] like Figure 1 , Figure 2 As shown, an oven lock designed to prevent children from opening includes a lock base 1 and a telescopic tongue 2. The telescopic tongue 2 can extend or retract from the lock base 1. The lock base 1 has a receiving cavity for accommodating and allowing the telescopic tongue 2 to slide relative to it. One side of the receiving cavity has an opening for the telescopic tongue 2 to extend or retract. A drive mechanism is provided between the lock base 1 and the telescopic tongue 2 to drive the telescopic tongue 2 to extend or retract from the lock base 1. The extended state of the telescopic tongue 2 is the locked state and the normal state; the retracted state of the telescopic tongue 2 is the unlocked state and the abnormal state. Figure 2 As shown, the lock seat 1 includes an open housing 3 with an opening in the bottom direction and a main bottom cover 4 suitable for attaching to the side of the oven door.

[0034] like Figure 3 , Figure 4 As shown, the open housing 3 includes a top wall 5, four surrounding walls 6, and two symmetrically arranged inner straight walls 7. A receiving cavity is formed between the main bottom cover plate 4, the top wall 5, and the two inner straight walls 7. The drive mechanism is configured as follows: Figure 5 As shown, it includes a knob 8 and a gear 9.

[0035] like Figure 8 , Figure 9 As shown, the knob component 8 includes a disc 10, with a protrusion 11 on the disc 10 suitable for twisting by a finger, and a downwardly extending circle 12 below the disc 10, with raised ribs 13 on the inner wall of the circle 12. Figure 3 , Figure 4 As shown, a circular recess 14 is formed in the top wall 5 of the lock base 1, and a central circular hole 15 is formed in the circular recess 14. Figure 11 As shown, the gear component 9 includes a large cylinder 16, a middle cylinder 17, and a small cylinder 18. A gear 19 is disposed on the outer periphery of the large cylinder 16, and a grooved strip 20 that matches the raised rib 13 is disposed on the middle cylinder 17. Figure 5 , Figure 11 As shown, the small cylindrical part 18 of the gear component 9 passes upward through the central circular hole 15 of the top wall 5 of the lock seat 1 and is fixedly connected to the knob component 8, so that the knob component 8 can slide up and down relative to the gear component 9 by means of the cooperation between the convex rib 13 and the groove rib 20. Figure 6 , Figure 7As shown, the telescopic tongue 2 includes a tongue-shaped portion 21 and a block-shaped portion 22 that can slide in the receiving cavity; the tongue-shaped portion 21 of the telescopic tongue 2 faces outward, the block-shaped portion 22 is empty in the middle, and at least one side of the block-shaped portion 22 is provided with a rack 23 that matches the gear 19.

[0036] like Figure 8 , Figure 9 As shown, the knob 8 has a raised block 11 with a top recess 24, and a central hole 41 is formed in the top recess 24. The drive mechanism is also equipped with a T-shaped part 25, such as... Figure 10 As shown, the T-shaped component 25 includes an upper block 26 suitable for embedding into the top recess 24 and a downwardly extending cylindrical pin 27. A compression spring 28 is fitted around the cylindrical pin 27, passing through the central hole 41 and inserting into the inner hole 42 of the small cylinder 18. See [reference needed]. Figure 11 A compression spring 28 is fitted around the cylindrical tip 27, allowing the spring 28 to fit over the small cylinder 18. The upper end of the spring 28 rests against the underside of the upper block 26, and the lower end is secured to the upper end of the middle cylinder 17. During assembly, strong adhesive is applied between the upper block 26 and the top recess 24 of the T-shaped component 25, and between the cylindrical tip 27 of the T-shaped component 25 and the inner wall of the small cylinder 18 of the gear component 9, to achieve a fixed connection between the small cylinder 18 of the gear component 9, the T-shaped component 25, and the knob component 8. Figure 1 , Figure 11 As shown, the upper block 26 of the T-shaped component 25 is spindle-shaped, and the top recess 24 of the protruding block 11 of the knob component 8 is also spindle-shaped. Figure 11 As shown, a short section of compression spring 28 is fitted into the base of the cylindrical tip 27 of the T-shaped component 25 via a tight-fitting section 36.

[0037] like Figure 3 , Figure 4 As shown, in the circular recess 14 on the top wall 5 of the open housing 3, a pair of small raised cylinders 29 are symmetrically arranged vertically. The disc 10 of the knob 8 has upward recesses 30 spaced apart to accommodate the upward movement of the small raised cylinders 29. The upward recesses 30 are evenly distributed along the circumference of the disc 10. In the circular recess 14 on the top wall 5 of the open housing 3, a pair of small recesses 31 are symmetrically arranged horizontally. Correspondingly, the disc 10 of the knob 8 has one or a pair of downwardly protruding blocks 32 that can be inserted into the small recesses 31. Small protrusions 33 are provided beside the small recesses 31 as stops. There are 10 upward recesses 30 evenly distributed along the circumference of the disc 10, with adjacent upward recesses 30 spaced 36 degrees apart; or, there are 12 upward recesses 30 evenly distributed along the circumference of the disc 10, with adjacent upward recesses 30 spaced 30 degrees apart. The top wall 5 of the open shell 3 has a U-shaped notch 34 around the protruding small cylinder 29, so that the protruding small cylinder 29 and its side top wall 35 become peninsula-shaped elastic elements.

[0038] Except for the compression spring 28, which is a metal part, all other components of the oven lock are injection molded plastic parts. For example... Figure 12As shown, a protruding cylinder 37 is provided on the main bottom cover plate 4, so that the large cylinder 16 of the gear component 9 is fitted on its outside after assembly; an upwardly extending vertical column 38 is provided on the upper side of the main bottom cover plate 4, and a column insertion notch 39 is opened on the upper side of the top wall 5 of the open housing 3 for inserting the vertical column 38 into a matching column, and the vertical column 38 just passes through the column insertion notch 39 of the top wall 5 of the open housing 3. Figure 2 As shown, a tongue base cover plate 40 is provided under the tongue-shaped part 21 of the telescopic tongue 2.

[0039] For easy installation, double-sided adhesive tape with strong adhesive can be applied to the bottom surface of the main bottom cover plate 4. High-quality, durable double-sided tape from 3M can be used. During installation, simply peel off the protective film on the double-sided tape and attach the child-proof oven lock to the target appliance such as an oven. If used as an oven lock, the lock body 1 can be attached to the side of the oven door.

[0040] Most ovens currently use a pull-open mechanism. For ovens designed for this purpose, this invention provides a child-proof oven lock that is affixed to the side of the oven door. A telescopic tongue 2 extends from the lock seat 1, blocking the oven door and preventing it from opening. When the telescopic tongue 2 is extended, the oven is locked and in its normal position. Because the small protruding cylinder 29 on the opening housing 3 is trapped in the upward-facing recess 30 of the knob 8 under the action of the compression spring, directly turning the knob 8 will not turn it. When an adult needs to unlock and open the oven door, they can pinch the protrusion 11 with their fingers and pull it outwards to rotate the knob 8. Once the knob is in the set position, the fingers are released. At this position, the small protruding cylinder 29 on the opening housing 3 is inserted into another upward-facing recess 30 of the knob 8 under the action of the compressed spring. The gear 9 drives the rack 23 to move, and the telescopic tongue 2 retracts inwards, no longer blocking the oven door, so the oven door can be opened easily. After use, to close the oven door, pinch the protrusion 11 with your fingers and pull it outwards again, and rotate the knob 8 to return it to its original position. The telescopic tongue 2 is still in the extended and locked state.

[0041] In this embodiment, the oven lock designed to prevent young children from opening requires two consecutive actions: pressing the first telescopic mechanism and the second telescopic mechanism respectively. For someone who knows how to open this lock, locking and unlocking is very convenient. However, for a young child who does not know how to open this lock and who is not intellectually capable, it is almost impossible for the child to open the lock, no matter how randomly the child presses the buttons. The probability of a young child randomly pressing the buttons to open the lock is almost zero.

Claims

1. An oven lock to prevent opening by a young child, comprising a lock housing (1) and a retractable tongue (2); characterized in that, The retractable tongue (2) can be extended or retracted from the lock seat (1), the lock seat (1) is provided with a containing cavity for containing and adapting the sliding of the retractable tongue (2) relative to it, one side of the containing cavity has an opening end for the extension or retraction of the retractable tongue (2), the lock seat (1) and the retractable tongue (2) are provided with a driving mechanism for driving the retractable tongue (2) to extend or retract from the lock seat (1); the extension state of the retractable tongue (2) is the locking state and is the normal state, and the retraction state of the retractable tongue (2) is the unlocking state and is the abnormal state; the lock seat (1) comprises an opening shell (3) with a bottom direction opening and a main bottom cover plate (4) adapted to be pasted beside the oven door, the opening shell (3) comprises a top wall (5), a peripheral wall (6) and two symmetrically arranged inner straight walls (7), the main bottom cover plate (4), the top wall (5) and the two inner straight walls (7) form the containing cavity; the driving mechanism is arranged as follows: comprising a knob part (8) and a gear part (9), the knob part (8) comprises a disc (10), the upper surface of the disc (10) is provided with a protruding block (11) adapted to be twisted by fingers, the lower surface of the disc (10) is provided with a downwardly extending circle (12), the inner wall of the circle (12) is provided with a protruding rib (13); the top wall (5) of the lock seat (1) is provided with a circular pit (14), and the circular pit (14) is provided with a center circular hole (15); the gear part (9) comprises a large cylinder (16), a middle cylinder (17) and a small cylinder (18), the outer periphery of the large cylinder (16) is provided with a gear (19), the middle cylinder (17) is provided with a groove strip (20) matched with the protruding rib (13), the small cylinder (18) of the gear part (9) is upwardly inserted through the center circular hole (15) of the top wall (5) of the lock seat (1) and fixedly connected with the knob part (8), so that the knob part (8) can slide up and down relative to the gear part (9) by the matching relationship between the protruding rib (13) and the groove strip (20); the retractable tongue (2) comprises a tongue-shaped part (21) and a block-shaped part (22) which can slide in the containing cavity; the tongue-shaped part (21) of the retractable tongue (2) is outward, the block-shaped part (22) is hollow in the middle, and at least one side of the block-shaped part (22) is provided with a gear strip (23) matched with the gear (19).

2. The child-resistant oven lock of claim 1, wherein, The convex block (11) of the knob (8) is provided with a top recess (24), and a center hole (41) is formed in the top recess (24). The driving mechanism is further provided with a T-shaped piece (25) which comprises an upper block (26) adapted to be embedded in the top recess (24) and a downwardly extending cylindrical tip (27). The cylindrical tip (27) is externally sleeved with a compression spring (28) which is inserted into the inner hole (42) of the small cylinder (18) through the center hole (41). The cylindrical tip (27) is externally sleeved with the compression spring (28), so that the compression spring (28) is sleeved outside the small cylinder (18). The upper end of the compression spring (28) abuts against the lower surface of the upper block (26), and the lower end is clamped to the upper end of the middle cylinder (17). When assembled, strong glue is injected and adhered between the upper block (26) of the T-shaped piece (25) and the top recess (24), and between the cylindrical tip (27) of the T-shaped piece (25) and the inner wall of the small cylinder (18) of the gear piece (9), so as to realize the fixed connection of the small cylinder (18) of the gear piece (9), the T-shaped piece (25) and the knob (8).

3. The child-resistant oven lock of claim 1, wherein, A pair of convex small cylinders (29) are symmetrically arranged in the circular recess (14) of the top wall (5) of the open shell (3). An upward recess (30) adapted to be sunk upward by the convex small cylinder (29) is spaced apart below the disc (10) of the knob (8). The upward recesses (30) are uniformly distributed along the circumference of the disc (10). A pair of small recesses (31) are symmetrically arranged in the circular recess (14) of the top wall (5) of the open shell (3). Correspondingly, a downward protruding block (32) which can be sunk into the small recess (31) is arranged below the disc (10) of the knob (8). Small protrusions (33) are arranged beside the small recess (31) as stop blocks.

4. The child-resistant oven lock of claim 3, wherein: The upward recesses (30) are uniformly distributed along the circumference of the disc (10) at 10, and the interval between two adjacent upward recesses (30) is 36 degrees. Alternatively, the upward recesses (30) are uniformly distributed along the circumference of the disc (10) at 12, and the interval between two adjacent upward recesses (30) is 30 degrees.

5. The child-resistant oven lock of claim 2, wherein: The top wall (5) of the open shell (3) is provided with a U-shaped notch (34) around the convex small cylinder (29), so that the convex small cylinder (29) and its side top wall (35) become a peninsula-shaped elastic member.

6. The child-resistant oven lock of claim 2, wherein: The upper block (26) of the T-shaped piece (25) is shuttle-shaped, and the top recess (24) formed in the convex block (11) of the knob (8) is also shuttle-shaped.

7. The child-resistant oven lock of claim 2, wherein: All components of the oven lock are plastic injection parts except that the compression spring (28) is a metal part. A small tight-fitting sleeve (36) of the compression spring (28) is arranged at the root of the cylindrical tip (27) of the T-shaped piece (25).

8. The child-resistant oven lock of claim 2, wherein: The main bottom cover plate (4) is provided with a convex cylinder (37) on the upper surface, so that the large cylinder (16) of the gear part (9) is sleeved outside the convex cylinder (37) after assembly; the main bottom cover plate (4) is provided with an upward extending vertical column (38) on the upper surface, and the opening shell (3) is provided with a column insertion notch (39) matched with the vertical column (38) on the upper surface of the top wall (5), and the vertical column (38) just passes through the column insertion notch (39) of the top wall (5) of the opening shell (3).

9. The child-resistant oven lock of claim 2, wherein, The tongue-shaped part (21) of the telescopic tongue (2) is provided with a tongue bottom cover plate (40) on the lower surface.

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