Refrigerator door lock prevented from being opened by children

Abstract

The refrigerator door lock can be opened only through two continuous actions and comprises a lock body used for being installed on the side face of a refrigerator door and an insertion body used for being installed on the side face of a refrigerator body. The insertion body comprises a mounting seat and an insertion head, and notches are formed in the two sides of the insertion head; the lock body comprises an open cavity for the insertion body to insert; a first telescopic tongue and a second telescopic tongue are arranged on the two sides of the opening cavity of the lock body respectively and are driven by a first telescopic mechanism and a second telescopic mechanism respectively and independently, the first telescopic mechanism and the second telescopic mechanism do not interfere with each other and do not link with each other, and the first telescopic mechanism and the second telescopic mechanism are arranged on the lock body respectively and independently and drive the telescopic tongues of the first telescopic mechanism and the second telescopic mechanism to stretch out or draw back. The extension state of the telescopic tongue is a locked state and is in a normal state, and the contraction state of the telescopic tongue is an unlocked state and is in 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 a refrigerator door lock that prevents young children from opening it; this refrigerator door lock that prevents young children from opening it is especially suitable for refrigerator doors, and can also be used for cabinet doors, 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, 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 solution. With modern people's increasing demands for quality of life, these child-proof locks, as accessories to modern furniture, must not only fulfill their basic function of preventing children from opening them, but also, since they are not anti-theft locks, be lightweight, aesthetically pleasing, easy to install and use, and environmentally friendly.

[0003] Current child-proof locks typically feature a single button for opening; generally, a single press of the button is sufficient to unlock the lock. For example, Chinese patent document CN 217501348 U discloses a refrigerator lock where an adult can open the door simply by pressing the button in the center. However, this is not effective in preventing children from opening the lock. Even with a single press, a child can still unknowingly open the lock, potentially causing injury. Furthermore, existing child-proof locks suffer from drawbacks such as being structurally inflexible, 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 a refrigerator door lock that requires two consecutive actions to open, preventing children from opening it. This fundamentally eliminates the possibility of children unintentionally opening the door.

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

[0006] A refrigerator door lock designed to prevent children from opening it includes a lock body for mounting on the side of the refrigerator door and an insert for mounting on the side of the refrigerator body. The insert includes a mounting base and an insert head extending from the mounting base, with notches on both sides of the insert head. The lock body includes an opening for inserting the insert. The lock body is characterized by having a first telescopic tongue and a second telescopic tongue on both sides of the opening. The first and second telescopic tongues are independently driven by a first telescopic mechanism and a second telescopic mechanism, respectively, without interference or linkage. The first and second telescopic mechanisms are independently located on the lock body and independently drive the extension or retraction of their respective telescopic tongues. The extended state of the telescopic tongue is the locked state and is the normal state; the retracted state of the telescopic tongue is the unlocked state and is the abnormal state.

[0007] The following are further solutions.

[0008] Both the first and second telescopic tongues include a semi-circular tongue-shaped portion and a block-shaped portion. The semi-circular tongue-shaped portion matches the notch of the insertion head. The first telescopic mechanism includes a first telescopic tongue, a first driving member, and a compression spring. The first telescopic tongue has a first ramp. The first driving member has a first extension rod. The arc-shaped end of the first extension rod abuts against the first ramp of the first telescopic tongue. A compression spring is provided between the rear side of the block-shaped portion of the first telescopic tongue and the adjacent end wall of the lock body. A compression spring is also provided between the bottom of the first driving member and the adjacent end wall of the lock body. The lock body also has... A first locking mechanism is provided for keeping the first telescopic tongue in a retracted state; the second telescopic mechanism includes a second telescopic tongue, a second driving member, and a compression spring. The second telescopic tongue has a second ramp, and the second driving member is provided with a second extension rod. The arc end of the second extension rod abuts against the second ramp of the second telescopic tongue. A compression spring is provided between the rear side of the block-shaped portion of the second telescopic tongue and the adjacent end wall of the lock body. A compression spring is also provided between the bottom of the second driving member and the adjacent bottom wall of the lock body. The lock body is also provided with a second locking mechanism for keeping the second telescopic tongue in a retracted state.

[0009] All components of the lock body, except for the compression spring which is a metal part, are injection molded plastic parts. The lock body includes an opening shell and a first bottom cover plate suitable for attaching to the side of a refrigerator door. The opening shell includes an arc-shaped wall, an outer arc-shaped wall extending inward from the arc-shaped wall, an inner arc-shaped wall, and an inner folded wall. The inner arc-shaped wall forms a bent section, which, together with the arc-shaped wall, forms the opening mouth. The inner arc-shaped walls on both sides of the opening mouth have notches for the extension and retraction of the first telescopic tongue and the second telescopic tongue. A compression spring is provided between the first telescopic tongue and the inner folded wall. The inner arc-shaped wall has a first notch, and the second... A driving component is inserted through a first notch, and a compression spring is provided between the bottom of the first driving component and the inner folded wall. The first locking mechanism is configured as follows: a first recess is formed on the top of the first driving component, and a rectangular through hole is formed in the first recess along its length. A first locking block is installed on the first recess, and the upper surface of the first locking block is suitable for finger-directed massage and plucking. A first downward extending strip is provided below the first locking block, passing through the rectangular through hole in the first recess. The lower end of the first downward extending strip has a first folded horizontal section. When the finger presses the first driving component, the first folded horizontal section... Move the finger to the area just below the inner folded wall, then massage and move the upper surface of the first locking block in a directional manner. The first horizontal segment will then be locked below the inner folded wall, and the first telescopic tongue will be in a retracted state. A compression spring is provided between the second telescopic tongue and the outer arc wall. A second notch is opened on the outer arc wall above the opening body. The second driving component is inserted through the second notch. A compression spring is provided between the bottom of the second driving component and the bent section of the inner arc wall. The second locking mechanism is configured as follows: a second recess is opened on the second driving component, and a rectangular groove is formed in the second recess along its length direction. The second recess has a rectangular through-hole, and a second locking block is installed on the second recess. The upper surface of the second locking block is suitable for finger-directed massage and plucking. Below the second locking block, a second downward extending strip is provided, which passes through the rectangular through-hole in the second recess. The lower end of the second downward extending strip has a second folded horizontal section. The inner arc wall has a square wall on the inner wall of its folded section. When the finger presses the second driving member, the second folded horizontal section moves down just below the square wall. When the finger then directs the massage and plucking of the upper surface of the second locking block, the second folded horizontal section is locked below the square wall, and the second telescopic tongue is in a retracted state.

[0010] The lock body has notches on both sides of the opening, with the outer side of the notch open and the inner side closed.

[0011] Both the bottom of the first driving member and the bottom of the second driving member have spring receiving holes, and the corresponding compression springs are installed in the spring receiving holes.

[0012] The first telescopic tongue and the second telescopic tongue have spring receiving holes in their block-shaped portions, and the corresponding compression springs are installed in the spring receiving holes; or, the first telescopic tongue and the second telescopic tongue have pins suitable for the compression springs to be fitted into, and the corresponding compression springs are fitted over the pins.

[0013] One or two rectangular through holes are opened in the first recess along its length direction. The first lower extension bar below the first locking block passes through the rectangular through holes in the first recess or through one of the rectangular through holes.

[0014] The upper surfaces of the first and second locking blocks are both provided with multiple rows of concave and convex grooves suitable for finger pressing.

[0015] The mounting base of the insert and the insert head extending from the mounting base are a stepped and integral plastic injection molded part. A second bottom cover plate, also stepped and integral, suitable for pasting to the side of the refrigerator body, is also provided. Both are plastic injection molded parts. The insert is assembled from the body part and the second bottom cover plate.

[0016] The mounting base of the insert has an elongated through hole, and the second bottom cover plate has a raised rib at the corresponding position. The raised rib passes through the elongated through hole and is flush with the top of the mounting base.

[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 those familiar with the method, unlocking is very convenient, as both turning the small lock cylinder and pressing the sliding fasteners on both sides can be easily accomplished with one hand. However, for toddlers who are unaware of the method and lack intellectual capacity, it is virtually impossible for them to open the lock, regardless of how they randomly 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 schematic diagram of the refrigerator door lock designed to prevent children from opening it. Figure 1 ;

[0020] Figure 2 This is a three-dimensional schematic diagram of the refrigerator door lock designed to prevent children from opening it. Figure 2 ;

[0021] Figure 3 A three-dimensional diagram of the lock body Figure 1 ;

[0022] Figure 4 A three-dimensional diagram of the lock body Figure 2 ;

[0023] Figure 5 A three-dimensional diagram of the lock body Figure 3 ;

[0024] Figure 6 A three-dimensional diagram of the first bottom cover plate of the lock body in its separated state. Figure 1 ;

[0025] Figure 7 A three-dimensional diagram of the first bottom cover plate of the lock body in its separated state. Figure 2 ;

[0026] Figure 8 For the lock body Figure 6 A three-dimensional schematic diagram showing the state of the concealed opening shell and the first bottom cover plate in the indicated orientation;

[0027] Figure 9 For the lock body Figure 7 A three-dimensional schematic diagram showing the state of the concealed opening shell and the first bottom cover plate in the indicated orientation;

[0028] Figure 10 3D schematic diagram of an open shell Figure 1 ;

[0029] Figure 11 3D schematic diagram of an open shell Figure 2 .

[0030] Figure 12 A three-dimensional diagram of the first or second telescopic tongue. Figure 1 ;

[0031] Figure 13 A three-dimensional diagram of the first or second telescopic tongue. Figure 2 ;

[0032] Figure 14 A three-dimensional schematic diagram of the first driving component and the first locking block in the separated state. Figure 1 ;

[0033] Figure 15 A three-dimensional schematic diagram of the first driving component and the first locking block in the separated state. Figure 2 ;

[0034] Figure 16 A three-dimensional schematic diagram of the separation state of the second driving component and the second locking block. Figure 1 ;

[0035] Figure 17 A three-dimensional schematic diagram of the separation state of the second driving component and the second locking block. Figure 2 ;

[0036] Figure 18 3D illustration of the insertion head Figure 1 ;

[0037] Figure 19 3D illustration of the insertion head Figure 2 ;

[0038] Figure 20 Three-dimensional schematic diagram of the insert body;

[0039] Figure 21 3D schematic diagram of the second bottom cover plate of the insert Figure 1 ;

[0040] Figure 22 3D schematic diagram of the second bottom cover plate of the insert Figure 2 ;

[0041] Figure 23 This is a three-dimensional schematic diagram of a compressed spring.

[0042] The parts indicated by the numbers in each figure are: 1. Lock body; 2. Insert body; 3. Insert head; 4. Notch; 5. Opening mouth body; 6. First telescopic tongue; 7. Second telescopic tongue; 8. Semi-arc tongue-shaped part; 9. Block-shaped part; 10. First driving member; 11. Compression spring; 12. First ramp; 13. First extension rod; 14. Arc-shaped end; 15. Rear side; 16. Second driving member; 17. Second ramp; 18. Second extension rod; 19. Opening shell; 20. First bottom cover plate; 21. Arc-shaped wall; 22. Outer arc wall; 23. Inner arc wall; 24. Inner folded wall; 25. First notch; 26. First recess; 27. Rectangular through hole; 28. First locking block; 29. ​​First lower extension bar; 30. First folded horizontal section; 31. Second notch; 32. Second recess; 33. 34. Second lower extension bar; 35. Second folded horizontal section; 36. Square wall; 37. Spring receiving hole; 38. Pin post; 39. Concave and convex groove strip; 40. Second bottom cover plate; 41. Long strip-shaped through hole; 42. Raised rib; 43. Body component. Detailed Implementation

[0043] The following is Figures 1 to 23 The specific embodiments of this utility model are illustrated below. Except for the compression spring 11, which is suitable to be made of metal, all other components of the lock designed to prevent children from opening it are suitable to be made of plastic injection molded parts.

[0044] like Figure 1 , Figure 2 As shown, a refrigerator door lock designed to prevent children from opening it includes a lock body 1 for mounting on the side of the refrigerator door and an insert 2 for mounting on the side of the refrigerator body; the insert 2 includes a mounting base and an insert head 3 extending from the mounting base, with notches 4 on both sides of the insert head 3; the lock body 1 as shown... Figure 3 , Figure 4 , Figure 5 As shown. Insert 2 as... Figure 18 , Figure 19 As shown, its main body components are as follows Figure 20As shown. The lock body 1 includes an opening 5 for inserting a plug 2. (As shown...) Figure 6 , Figure 7 As shown, the lock body 1 has a first telescopic tongue 6 and a second telescopic tongue 7 on both sides of the opening body 5. The first telescopic tongue 6 and the second telescopic tongue 7 are driven independently by the first telescopic mechanism and the second telescopic mechanism, respectively, without interfering with each other or being linked. The first telescopic mechanism and the second telescopic mechanism are independently set on the lock body 1, and each independently drives the extension or retraction of its telescopic tongue to form two independent lock parts. The extended state of the telescopic tongue is the locked state and is the normal state, and the retracted state of the telescopic tongue is the unlocked state and is the abnormal state.

[0045] like Figure 8 , Figure 9 , Figure 12 , Figure 13 As shown, both the first telescopic tongue 6 and the second telescopic tongue 7 include a semi-circular tongue-shaped portion 8 and a block-shaped portion 9. The semi-circular tongue-shaped portion 8 matches the notch 4 of the insertion head 3. The first telescopic mechanism includes the first telescopic tongue 6, the first driving member 10, and a compression spring 11. The first telescopic tongue 6 has a first ramp 12. The first driving member 10 is provided with a first extension rod 13. The arc-shaped end 14 of the first extension rod 13 abuts against the first ramp 12 of the first telescopic tongue 6. A compression spring 11 is provided between the rear side 15 of the block-shaped portion 9 of the first telescopic tongue 6 and the adjacent end wall of the lock body 1. A compression spring 11 is also provided between the bottom of the first driving member 10 and the adjacent end wall of the lock body 1. The lock body 1 A first locking mechanism is also provided to keep the first telescopic tongue 6 in a retracted state; the second telescopic mechanism includes a second telescopic tongue 7, a second driving member 16, and a compression spring 11. The second telescopic tongue 7 has a second ramp 17. The second driving member 16 is provided with a second extension rod 18. The arc-shaped end 14 of the second extension rod 18 abuts against the second ramp 17 of the second telescopic tongue 7. A compression spring 11 is provided between the rear side 15 of the block-shaped portion 9 of the second telescopic tongue 7 and the end wall of the adjacent lock body 1. A compression spring 11 is also provided between the bottom of the second driving member 16 and the bottom wall of the adjacent lock body 1. The lock body 1 is also provided with a second locking mechanism to keep the second telescopic tongue 7 in a retracted state. Each compression spring 11 is as follows: Figure 23 As shown.

[0046] Except for the compression spring 11, which is a metal part, all other components of the lock body 1 are injection molded plastic parts. For example... Figure 10 , Figure 11As shown, the lock body 1 includes an open shell 19 and a first bottom cover plate 20 suitable for attaching to the side of the refrigerator door. The open shell 19 includes an arc-shaped wall 21, an outer arc-shaped wall 22 extending inward from the arc-shaped wall 21, an inner arc-shaped wall 23, and an inner folded wall 24. The inner arc-shaped wall 23 forms a bent section and together with the arc-shaped wall 21 forms an open mouth body 5. The inner arc-shaped walls 23 on both sides of the open mouth body 5 have notches for the extension and retraction of the first telescopic tongue 6 and the second telescopic tongue 7. A compression spring 11 is provided between the first telescopic tongue 6 and the inner folded wall 24. The inner arc-shaped wall 23 has a first notch 25. The first driving member 10 is inserted from the first notch 25. The compression spring 11 is provided between the bottom of the first driving member 10 and the inner folded wall 24.

[0047] like Figure 14 , Figure 15 As shown, the first locking mechanism is configured as follows: a first recess 26 is formed on the first driving member 10, and a rectangular through hole 27 is formed in the first recess 26 along its length. A first locking block 28 is mounted on the first recess 26. The upper surface of the first locking block 28 is suitable for finger-directed massage and plucking. A first downward extending strip 29 is provided below the first locking block 28, passing through the rectangular through hole 27 in the first recess 26. The lower end of the first downward extending strip 29 is provided with a first folded horizontal section 30. When the finger presses the first driving member 10, the first locking mechanism... The first horizontal segment 30 moves down to just below the inner fold wall 24. Then, the finger massages and moves the upper surface of the first locking block 28, and the first horizontal segment 30 is locked below the inner fold wall 24. The first telescopic tongue 6 is in a retracted state. A compression spring 11 is set between the second telescopic tongue 7 and the outer arc wall 22. The outer arc wall 22 above the oral cavity 5 has a second notch 31. The second driving member 16 is inserted from the second notch 31. A compression spring 11 is set between the bottom of the second driving member 16 and the bent section of the inner arc wall 23.

[0048] like Figure 16 , Figure 17 As shown, the second locking mechanism is configured as follows: a second recess 32 is formed on the second driving member 16, and a rectangular through hole 27 is formed in the second recess 32 along its length. A second locking block 33 is installed on the second recess 32. The upper surface of the second locking block 33 is suitable for finger-directed massage and plucking. A second downward extension bar 34 is provided below the second locking block 33, passing through the rectangular through hole 27 in the second recess 32. The lower end of the second downward extension bar 34 is provided with a second folded horizontal section 35. An angled wall 36 is provided on the inner wall of the inner arc wall 23 at its folded section. When the finger presses down on the second driving member 16, the second folded horizontal section 35 moves down just below the angled wall 36. When the finger then directs the finger to massage and plucking the upper surface of the second locking block 33, the second folded horizontal section 35 is locked below the angled wall 36, and the second telescopic tongue 7 is in a retracted state.

[0049] like Figure 10 , Figure 11As shown, the lock body 1 has notches on both sides of the opening body 5, with the notches open on the outside and closed on the inside.

[0050] like Figure 15 , Figure 17 As shown, spring receiving holes 37 are provided at the bottom of the first driving member 10 and the bottom of the second driving member, and the corresponding compression springs 11 are installed in the spring receiving holes 37.

[0051] The block-shaped portions 9 of the first telescopic tongue 6 and the second telescopic tongue 7 have spring receiving holes 37, and the corresponding compression springs 11 are installed in the spring receiving holes 37; or, as Figure 12 , Figure 13 As shown, the block-shaped portions 9 of the first telescopic tongue 6 and the second telescopic tongue 7 are provided with pin posts 38 suitable for the compression spring 11 to be fitted into, and the corresponding compression spring 11 is fitted outside the pin post 38.

[0052] like Figure 14 As shown, one or two rectangular through holes 27 are opened in the first recess 26 along its length direction. The first downward extension strip 29 below the first locking block 28 passes through the rectangular through holes 27 in the first recess 26 or through one of the rectangular through holes 27.

[0053] like Figure 14 , Figure 16 As shown, multiple rows of raised and recessed grooves 39 suitable for finger pressing are provided on the upper surface of the first locking block 28 and the upper surface of the second locking block 33.

[0054] like Figure 18 , Figure 19 As shown, the mounting base of the insert 2 and the insert head 3 extending from the mounting base are a single plastic injection molded part in a stepped shape. A second bottom cover plate 40, which is also a single plastic injection molded part in a stepped shape and is suitable for being pasted to the side of the refrigerator body, is also provided. Both are plastic injection molded parts. The insert 2 is assembled from the body part 43 and the second bottom cover plate 40.

[0055] like Figure 18 , Figure 21 , Figure 22 As shown, an elongated through hole 41 is provided on the mounting base of the insert 2, and a raised rib 42 is provided on the corresponding position of the second bottom cover plate 40. The raised rib 42 passes through the elongated through hole 41 and is flush with the top of the mounting base.

[0056] For ease of installation, double-sided adhesive tape can be applied to the bottom surfaces of the first bottom cover plate 20 and the second bottom cover plate 40. High-quality, durable double-sided tape from 3M can be used. During installation, peel off the protective film on the double-sided tape and attach the child-proof refrigerator door lock to the refrigerator door or similar appliance. When used as a refrigerator door lock, the lock body 1 can be attached to the side of the refrigerator door, and the insert 2 can be attached to the side of the refrigerator body. During installation, ensure that the lock body 1 and the insert 2 are attached at the same height on the refrigerator. When the refrigerator door is closed, the insert head 3 of the insert 2 inserts into the opening 5 of the lock body 1. After retracting against the compression springs 11 of the first telescopic tongue 6 and the second telescopic tongue 7, the insert head 3 pops out under the action of its respective compression springs 11, locking itself in the recesses 4 on both sides of the insert head 3, thus locking the child-proof refrigerator door lock.

[0057] To unlock, press the first drive member 10 and the second drive member 16 with your fingers respectively. In this embodiment, the first drive member 10 and the second drive member 16 of the refrigerator door lock, which prevents children from opening it, form two independent locking members, the first locking member and the second locking member, respectively, and each individual locking member can also be locked. Furthermore, pressing the first locking block 28 causes its first folded horizontal section 30 to lock under the inner folded wall 24, and the first telescopic tongue 6 is in the retracted state, and the first locking member is in the unlocked state; pressing the second locking block 33 causes its second folded horizontal section 35 to lock under the angled wall 36, and the second telescopic tongue 7 is in the retracted state, and the second locking member is in the unlocked state.

[0058] In this embodiment, the refrigerator door 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 has insufficient intelligence, no matter how the child presses the buttons randomly, it is almost impossible to open the lock. The probability of a young child opening the lock by pressing the buttons randomly is almost zero.

Claims

1. A refrigerator door lock to prevent children from opening it, comprising a lock body (1) for mounting on the side of a refrigerator door and an insert (2) for mounting on the side of the refrigerator body; the insert (2) includes a mounting base and an insert head (3) extending from the mounting base, the insert head (3) having notches (4) on both sides; the lock body (1) includes an opening (5) for inserting the insert (2); characterized in that, The lock body (1) is provided with a first telescopic tongue (6) and a second telescopic tongue (7) on both sides of the opening body (5). The first telescopic tongue (6) and the second telescopic tongue (7) are driven independently by the first telescopic mechanism and the second telescopic mechanism, respectively, without interfering with each other or being linked. The first telescopic mechanism and the second telescopic mechanism are independently provided on the lock body (1), and each independently drives the extension or retraction of its telescopic tongue. The extended state of the telescopic tongue is the locked state and is the normal state, and the retracted state of the telescopic tongue is the unlocked state and is the abnormal state.

2. The refrigerator door lock for preventing children from opening it, as described in claim 1, is characterized in that... Both the first telescopic tongue (6) and the second telescopic tongue (7) include a semi-arc tongue-shaped part (8) and a block-shaped part (9). The semi-arc tongue-shaped part (8) matches the notch (4) of the insertion head (3). The first telescopic mechanism includes a first telescopic tongue (6), a first driving member (10), and a compression spring (11). The first telescopic tongue (6) has a first ramp (12). The first driving member (10) is provided with a first extension rod (13). The arc end (14) of the first extension rod (13) abuts against the first ramp (12) of the first telescopic tongue (6). A compression spring (11) is provided between the rear side (15) of the block-shaped part (9) of the first telescopic tongue (6) and the end wall of the adjacent lock body (1). A compression spring (11) is also provided between the bottom of the first driving member (10) and the end wall of the adjacent lock body (1). The lock The main body (1) is also provided with a first locking mechanism for keeping its first telescopic tongue (6) in a retracted state; the second telescopic mechanism includes a second telescopic tongue (7), a second driving member (16), and a compression spring (11). The second telescopic tongue (7) has a second ramp (17). The second driving member (16) is provided with a second extension rod (18). The arc end (14) of the second extension rod (18) abuts against the second ramp (17) of the second telescopic tongue (7). A compression spring (11) is provided between the rear side (15) of the block-shaped part (9) of the second telescopic tongue (7) and the end wall of the adjacent lock body (1). A compression spring (11) is also provided between the bottom of the second driving member (16) and the bottom wall of the adjacent lock body (1). The lock body (1) is also provided with a second locking mechanism for keeping its second telescopic tongue (7) in a retracted state.

3. The refrigerator door lock for preventing children from opening it, as described in claim 2, is characterized in that... The components of the lock body (1), except for the compression spring (11), which is a metal part, are all plastic injection molded parts; the lock body (1) includes an opening shell (19) and a first bottom cover plate (20) suitable for pasting to the side of the refrigerator door. The opening shell (19) includes an arc wall (21), an outer arc wall (22) extending inward from the arc wall (21), an inner arc wall (23), and an inner folded wall (24). The inner arc wall (23) forms a bent section, which together with the arc wall (21) forms the opening mouth body (5). The inner arc walls (23) on both sides of the opening mouth body (5) have notches for the extension and retraction of the first telescopic tongue (6) and the second telescopic tongue (7); the first telescopic tongue (6) and the second telescopic tongue (7) A compression spring (11) is provided between the inner folded walls (24), and a first notch (25) is opened in the inner arc wall (23). The first driving member (10) is inserted through the first notch (25), and a compression spring (11) is provided between the bottom of the first driving member (10) and the inner folded wall (24). The first locking mechanism is configured as follows: a first recess (26) is opened on the top of the first driving member (10), and a rectangular through hole (27) is opened in the first recess (26) along its length direction. A first locking block (28) is installed on the first recess (26), and the upper surface of the first locking block (28) is suitable for finger-directed massage and plucking. A first downward extending strip (2) is provided below the first locking block (28). 9) Passing through the rectangular through hole (27) in the first recess (26), the lower end of the first lower extension bar (29) is provided with a first folded horizontal section (30). When the finger presses down on the first driving member (10), the first folded horizontal section (30) moves down just below the inner folded wall (24). The finger then massages and moves the upper surface of the first locking block (28), and the first folded horizontal section (30) is locked below the inner folded wall (24). The first telescopic tongue (6) is in a retracted state. A compression spring (11) is provided between the second telescopic tongue (7) and the outer arc wall (22). The outer arc wall (22) above the opening mouth body (5) opens a second notch (31). The second driving member (16) moves from the second notch. The second drive member (16) is inserted into the opening (31), and a compression spring (11) is provided between the bottom of the second drive member (16) and the bending section of the inner arc wall (23); the second locking mechanism is configured as follows: a second recess (32) is opened on the second drive member (16), and a rectangular through hole (27) is opened in the second recess (32) along its length direction. A second locking block (33) is installed on the second recess (32), and the upper surface of the second locking block (33) is suitable for finger-directed massage and plucking. A second downward extension bar (34) is provided below the second locking block (33), which passes through the rectangular through hole (27) in the second recess (32). A second horizontal section (35) is provided at the lower end of the second downward extension bar (34);An angled wall (36) is provided on the inner wall of the inner arc wall (23) of its bent section. When the finger presses down on the second drive member (16), the second folded horizontal section (35) moves down just below the angled wall (36). The finger then massages and moves the upper surface of the second locking block (33), and the second folded horizontal section (35) is locked below the angled wall (36), and the second telescopic tongue (7) is in a retracted state.

4. The refrigerator door lock for preventing young children from opening it, as described in claim 3, is characterized in that... The lock body (1) has notches on both sides of the opening body (5), with the notches open on the outside and closed on the inside.

5. The refrigerator door lock for preventing young children from opening it, as described in claim 3, is characterized in that... Both the bottom of the first drive member (10) and the bottom of the second drive member have spring receiving holes (37), and the corresponding compression springs (11) are installed in the spring receiving holes (37).

6. The refrigerator door lock for preventing young children from opening it as described in claim 3, characterized in that, The first telescopic tongue (6) and the second telescopic tongue (7) have spring receiving holes (37) on their block-shaped parts (9), and the corresponding compression springs (11) are installed in the spring receiving holes (37); or, the first telescopic tongue (6) and the second telescopic tongue (7) have pin posts (38) suitable for the compression springs (11) to be fitted into, and the corresponding compression springs (11) are fitted onto the pin posts (38).

7. The refrigerator door lock for preventing young children from opening it, as described in claim 3, is characterized in that... One or two rectangular through holes (27) are opened in the first recess (26) along its length direction. The first lower extension bar (29) below the first locking block (28) passes through the rectangular through holes (27) in the first recess (26) or through one of the rectangular through holes (27).

8. The refrigerator door lock for preventing young children from opening it, as described in claim 3, is characterized in that... Multiple rows of concave and convex grooves (39) suitable for finger pressing are opened on the upper surface of the first locking block (28) and the upper surface of the second locking block (33).

9. The refrigerator door lock for preventing children from opening it, as described in claim 1, is characterized in that... The mounting base of the insert (2) and the insert head (3) extending from the mounting base are a single plastic injection molded part in a stepped shape. A second bottom cover plate (40) in a stepped shape, which is also a single piece, is also a single piece suitable for being pasted to the side of the refrigerator body. Both are plastic injection molded parts. The insert (2) is assembled from the body part (43) and the second bottom cover plate (40).

10. The refrigerator door lock for preventing children from opening it, as described in claim 2, is characterized in that... The mounting base of the insert (2) has an elongated through hole (41) and the second bottom cover plate (40) has a raised rib (42) at the corresponding position. The raised rib (42) passes through the elongated through hole (41) and is flush with the top of the mounting base.

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