Refrigerator door lock capable of being 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] The invention relates to a refrigerator door lock capable of preventing a child from opening the door. The refrigerator door lock capable of preventing a child from opening the door is particularly suitable for refrigerator doors, and can also be used for cabinet doors, drawers and the like. Background Art

[0002] Preventing children from accidentally hurting themselves is very important for families with young children. Young children are naturally curious and active, and this is also necessary for their physical growth and intellectual development. However, young children do not yet have the ability to identify many dangerous behaviors, especially those under 4 years old. Even if they are accompanied by adults, it is usually impossible to always pay attention to the behavior of young children. Young children often do some unexpected behaviors that may cause accidental self-harm, such as opening cabinet doors, refrigerator doors, drawers, toilet lids and other furniture, touching or accidentally swallowing items that may cause harm to them. It is an effective means to set locks to prevent children from opening furniture where items that may cause harm to children are stored. With the improvement of modern people's requirements for quality of life, this kind of lock that prevents children from opening, as an accessory of modern furniture, in addition to the basic function of preventing children from opening, is also required to be lightweight, beautiful in appearance, easy to install and use, and environmentally friendly because it is not an anti-theft lock.

[0003] The existing locks that prevent children from opening are usually designed with a button for opening the lock. Generally, only one button press is needed to open the lock. For example, Chinese patent document CN 217501348 U discloses a refrigerator lock. When an adult needs to open the refrigerator door, he only needs to press the button in the middle of the lock to unlock it. This does not effectively prevent children from opening the door. If a child randomly presses the lock that can be opened with a single press, it may still be opened unconsciously by the child, which may cause harm to the child. In addition, the existing locks that prevent children from opening also have problems such as not being light enough in structure, not being beautiful enough in appearance, not being convenient to install and use, and not being environmentally friendly. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a refrigerator door lock that can be opened by children and requires two consecutive actions to be opened, thereby fundamentally preventing the door from being opened by children unconsciously.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A refrigerator door lock for preventing young children from opening the door, comprising a lock body for installation on the side of the refrigerator door and an insert body for installation on the side of the refrigerator body; the insert body comprises a mounting seat and an insert head extending from the mounting seat, and recesses are provided on both sides of the insert head; the lock body comprises an open cavity for the insert body to be inserted; it is characterized in that the lock body is provided with a first telescopic tongue and a second telescopic tongue on both sides of the open cavity, respectively, the first telescopic tongue and the second telescopic tongue are independently driven by a first telescopic mechanism and a second telescopic mechanism, respectively, without interfering with each other, and even more without linkage, the first telescopic mechanism and the second telescopic mechanism are independently arranged on the lock body, and independently drive the extension or retraction of their telescopic tongues, the extended state of the telescopic tongue is a locked state and is a normal state, and the retracted state of the telescopic tongue is an unlocked state and is an abnormal state.

[0006] The following are further solutions.

[0007] The first telescopic tongue and the second telescopic tongue both include a semi-arc tongue-shaped portion and a block-shaped portion, and the semi-arc 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 is provided with a first slope, the first driving member is provided with a first extension rod, the arc surface end of the first extension rod supports the first slope of the first telescopic tongue, a compression spring is provided between the rear side surface of the block-shaped portion of the first telescopic tongue and the adjacent end wall of the lock body, and a compression spring is also provided between the bottom of the first driving member and the adjacent end wall of the lock body, and the lock body is also provided with a 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 is provided with a second slope; the second driving member is provided with a second extension rod; the arc end of the second extension rod supports the second slope of the second telescopic tongue; a compression spring is provided between the rear side surface of the second telescopic tongue block-shaped portion 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.

[0008] The components of the lock body are all plastic injection molded parts except the compression spring which is a metal part; the lock body includes an open shell and a first bottom cover plate suitable for being pasted to the side of the refrigerator door; the open shell includes an arc wall, an outer arc wall and an inner arc wall and an inner folded wall extending inward from the arc wall, the inner arc wall forms a bending section, and together with the arc wall forms the open cavity; the inner arc walls on both sides of the open cavity are provided with notches for the first telescopic tongue and the second telescopic tongue to telescope; a compression spring is arranged between the first telescopic tongue and the inner folded wall, the inner arc wall is provided with a first notch, and the second telescopic tongue is provided with a compression spring; A driving member is installed from the first notch, and a compression spring is arranged between the bottom of the first driving member and the inner folded wall; the first locking mechanism is arranged as follows: a first pit is arranged on the first driving member, a rectangular through hole is arranged in the first pit along its length direction, a first locking block is arranged on the first pit, and the upper surface of the first locking block is suitable for finger-directional massage and flicking, a first downward extension strip extending downward is arranged below the first locking block, and passes through the rectangular through hole in the first pit, and a first folded horizontal section is arranged at the lower end of the first downward extension strip, and when the finger presses the first driving member, the first folded horizontal section is lowered The first locking block is moved just below the inner folded wall, and the finger massages and moves the upper surface of the first locking block in a directional manner, so that the first folded transverse section is locked below the inner folded wall, and the first telescopic tongue is in a retracted state; a compression spring is arranged between the second telescopic tongue and the outer arc wall, a second notch is arranged on the outer arc wall above the opening body, and the second driving member is installed through the second notch, and a compression spring is arranged between the bottom of the second driving member and the bending section of the inner arc wall; the second locking mechanism is arranged as follows: a second pit is arranged on the second driving member, and a rectangular groove is arranged in the second pit along its length direction. shaped through hole, a second stopping block is installed on the second pit, the upper surface of the second stopping block is suitable for directional massage and manipulation by fingers, a second downward extension strip extending downward is arranged below the second stopping block and passes through the rectangular through hole in the second pit, and a second folded horizontal section is arranged at the lower end of the second downward extension strip; an angle ruler wall is arranged on the inner wall of the bending section of the inner arc wall, when the second driving member is pressed by the finger, the second folded horizontal section moves down to just below the angle ruler wall, and the finger then directional massages and manipulates the upper surface of the second stopping block, and the second folded horizontal section is stopped below the angle ruler wall, and the second telescopic tongue is in a retracted state.

[0009] The lock body has notches on both sides of the opening cavity, and the outer sides of the notches are open and the inner sides are closed.

[0010] The bottom of the first driving member and the bottom of the second driving member are both provided with spring accommodating holes, and the corresponding compressed springs are installed in the spring accommodating holes.

[0011] The block-shaped parts of the first telescopic tongue and the second telescopic tongue are provided with spring accommodating holes, and the corresponding compression springs are installed in the spring accommodating holes; or, the block-shaped parts of the first telescopic tongue and the second telescopic tongue are provided with pins suitable for the compression springs to be inserted, and the corresponding compression springs are sleeved outside the pins.

[0012] One or two rectangular through holes are formed in the first pit along its length direction, and the first downward extending bar below the first blocking block passes through the rectangular through holes in the first pit or passes through one of the rectangular through holes.

[0013] The upper surfaces of the first locking block and the second locking block are both provided with multiple rows of concave and convex grooves suitable for pressing by fingers.

[0014] The mounting seat of the insert body and the insertion head extending from the mounting seat are stepped and are an integrated plastic injection molded part. A second bottom cover plate is also stepped and integrated and suitable for being pasted to the side of the refrigerator body. Both are plastic injection molded parts. The insert body is assembled from the main body and the second bottom cover plate.

[0015] A long strip through hole is provided on the mounting seat of the insert body, and a raised rib is provided at a corresponding position of the second bottom cover plate, and the raised rib passes through the long strip through hole and is flush with the mounting seat.

[0016] Compared with the prior art of locks that can be opened with just one button press, the lock that prevents young children from opening in the present invention requires two consecutive actions to be opened. For people who know the method of opening the lock, the unlocking operation is very convenient, and the unlocking operations of twisting the small lock core and pressing the sliding fasteners on both sides can be easily completed with one hand; but for young children who do not know the method of opening the lock and have insufficient intelligence, no matter how randomly the children press, it is almost impossible to open the lock. The probability of the lock being opened by the children randomly pressing is almost zero, which can effectively prevent the children from opening the lock.

[0017] The overall structure of the lock for preventing children from opening is reasonably designed. Except for the compression spring which is suitable for being made of metal, other parts are suitable for being made of plastic injection moldings, which is convenient for mass production, has low cost and beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall three-dimensional diagram of the refrigerator door lock that prevents children from opening the door of the present invention Figure 1 ; Figure 2 The overall three-dimensional diagram of the refrigerator door lock that prevents children from opening the door of the present invention Figure 2 ; Figure 3 A three-dimensional diagram of the lock body Figure 1 ; Figure 4 A three-dimensional diagram of the lock body Figure 2 ; Figure 5 A three-dimensional diagram of the lock body Figure 3 ; Figure 6 A three-dimensional diagram of the lock body's first bottom cover plate in a separated state Figure 1 ; Figure 7 A three-dimensional diagram of the lock body's first bottom cover plate in a separated state Figure 2 ; Figure 8 For the lock body Figure 6 A three-dimensional schematic diagram of the state of the housing with the opening hidden in the shown position and the first bottom cover plate; Fig. 9 For the lock body Figure 7 A three-dimensional schematic diagram of the state of the housing with the opening hidden in the shown position and the first bottom cover plate; Fig.10 A three-dimensional diagram of an open shell Figure 1 ; Fig.11 A three-dimensional diagram of an open shell Figure 2 .

[0019] Fig.12 A three-dimensional diagram of the first telescopic tongue or the second telescopic tongue Figure 1 ; Fig.13 A three-dimensional diagram of the first telescopic tongue or the second telescopic tongue Figure 2 ; Fig.14 A three-dimensional diagram showing the separation state of the first driving member and the first locking block Figure 1 ; Fig.15 A three-dimensional diagram showing the separation state of the first driving member and the first locking block Figure 2 ; Fig.16 A three-dimensional diagram showing the separation state of the second driving member and the second locking block Figure 1 ; Fig.17 A three-dimensional diagram showing the separation state of the second driving member and the second locking block Figure 2 ; Fig.18 A three-dimensional diagram of the insertion head Figure 1 ; Fig.19 A three-dimensional diagram of the insertion head Figure 2 ; Fig. 20 A three-dimensional schematic diagram of the insert body; Fig.21 Schematic diagram of the second bottom cover of the insert Figure 1 ; Fig. 22 Schematic diagram of the second bottom cover of the insert Figure 2 ; Fig.23 It is a three-dimensional schematic diagram of a compressed spring.

[0020] The parts indicated by the numbers in the figures are: 1. lock body; 2. inserting body; 3. inserting head; 4. notch; 5. opening body; 6. first telescopic tongue; 7. second telescopic tongue; 8. semi-arc tongue-shaped portion; 9. block portion; 10. first driving member; 11. compression spring; 12. first slope; 13. first extension rod; 14. arc surface end; 15. rear side; 16. second driving member; 17. second slope; 18. second extension rod; 19. opening shell; 20. first bottom cover plate; 21. arc surface wall; 22. outer arc wall; 23. inner arc wall; 24. inner folding wall; 25. first notch; 26. first pit; 27. rectangular through hole; 28. first stop block; 29. ​​first downward extension strip; 30. first folding cross section; 31. second notch; 32. second pit; 33. The second stop block; 34. The second downward extension strip; 35. The second folded horizontal section; 36. The angle ruler wall; 37. The spring receiving hole; 38. The pin; 39. The concave and convex groove strip; 40. The second bottom cover plate; 41. The long strip through hole; 42. The raised rib; 43. The main body. DETAILED DESCRIPTION

[0021] The following Figures 1 to 23 The lock for preventing children from opening the lock of the present invention is shown in the figure, except that the compression spring 11 is made of metal, and the other parts are made of plastic injection molding.

[0022] like Figure 1 , Figure 2 As shown, a refrigerator door lock for preventing children from opening the refrigerator door comprises a lock body 1 for mounting on the side of the refrigerator door and an insert body 2 for mounting on the side of the refrigerator body; the insert body 2 comprises a mounting seat and an insert head 3 extending from the mounting seat, and notches 4 are provided on both sides of the insert head 3; the lock body 1 is as shown in FIG. Figure 3 , Figure 4 , Figure 5 Insert 2 is as shown. Fig.18 , Fig.19 As shown, its main body is as Fig. 20 As shown. The lock body 1 includes an open cavity 5 for inserting the insert body 2. Figure 6 , Figure 7 As shown, the lock body 1 is provided with a first telescopic tongue 6 and a second telescopic tongue 7 on both sides of the opening cavity 5, respectively. The first telescopic tongue 6 and the second telescopic tongue 7 are independently driven by a first telescopic mechanism and a second telescopic mechanism respectively, without interfering with each other and not linked. The first telescopic mechanism and the second telescopic mechanism are independently arranged on the lock body 1, and each independently drives the extension or retraction of its telescopic tongue to form two independent lock components. The extended state of the telescopic tongue is a locked state and is a normal state, and the retracted state of the telescopic tongue is an unlocked state and is an abnormal state.

[0023] like Figure 8 , Fig. 9 , Fig.12 , Fig.13 As shown, the first telescopic tongue 6 and the second telescopic tongue 7 both include a semi-arc tongue-shaped portion 8 and a block-shaped portion 9, and the semi-arc tongue-shaped portion 8 is matched with the recess 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 is provided with a first slope 12, the first driving member 10 is provided with a first extension rod 13, and the arc surface end 14 of the first extension rod 13 is against the first slope 12 of the first telescopic tongue 6, and a compression spring 11 is arranged between the rear side surface 15 of the block-shaped portion 9 of the first telescopic tongue 6 and the adjacent end wall of the lock body 1, and a compression spring 11 is also arranged between the bottom of the first driving member 10 and the adjacent end wall of the lock body 1, and the lock body 1 A first locking mechanism is also provided for keeping 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 is provided with a second slope 17, and the second driving member 16 is provided with a second extension rod 18. The arc end 14 of the second extension rod 18 supports the second slope 17 of the second telescopic tongue 7. A compression spring 11 is provided between the rear side surface 15 of the block portion 9 of the second telescopic tongue 7 and the adjacent end wall of the lock body 1. A compression spring 11 is also provided between the bottom of the second driving member 16 and the adjacent bottom wall of the lock body 1. The lock body 1 is also provided with a second locking mechanism for keeping the second telescopic tongue 7 in a retracted state. Each compression spring 11 is as shown in Fig.23 shown.

[0024] The components of the lock body 1 are all plastic injection molded parts, except for the compression spring 11 which is a metal part. Fig.10 , Fig.11 As shown, the lock body 1 includes an open shell 19 and a first bottom cover plate 20 suitable for being pasted to the side of the refrigerator door. The open shell 19 includes a curved wall 21, an outer curved wall 22, an inner curved wall 23 and an inner folded wall 24 extending inward from the curved wall 21. The inner curved wall 23 forms a bending section and forms an open cavity 5 together with the curved wall 21. The inner curved walls 23 on both sides of the open cavity 5 are provided with notches for the first telescopic tongue 6 and the second telescopic tongue 7 to be telescoped. A compression spring 11 is arranged between the first telescopic tongue 6 and the inner folded wall 24. The inner curved wall 23 is provided with a first notch 25. The first driving member 10 is installed from the first notch 25. A compression spring 11 is arranged between the bottom of the first driving member 10 and the inner folded wall 24.

[0025] like Fig.14 , Fig.15As shown, the first locking mechanism is arranged as follows: a first recess 26 is provided on the first driving member 10, a rectangular through hole 27 is provided in the first recess 26 along its length direction, 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 toggling, a first downward extending strip 29 is arranged below the first locking block 28, and passes through the rectangular through hole 27 in the first recess 26, a first folded horizontal section 30 is arranged at the lower end of the first downward extending strip 29, and when the finger presses the first driving member 10, the first When the first folded horizontal section 30 moves down to just below the inner folded wall 24, the finger massages and moves the upper surface of the first stopping block 28 in a directional manner, and the first folded horizontal section 30 is stopped below the inner folded wall 24, and the first telescopic tongue 6 is in a retracted state; a compression spring 11 is arranged between the second telescopic tongue 7 and the outer arc wall 22, and a second notch 31 is arranged on the outer arc wall 22 above the opening cavity 5, and the second driving member 16 is installed from the second notch 31, and a compression spring 11 is arranged between the bottom of the second driving member 16 and the bending section of the inner arc wall 23.

[0026] like Fig.16 , Fig.17 As shown, the second locking mechanism is arranged as follows: a second recess 32 is provided on the second driving member 16, a rectangular through hole 27 is provided 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 manipulation, a second downward extension bar 34 extending downward is provided below the second locking block 33, passing through the rectangular through hole 27 in the second recess 32, and a second folded cross section 35 is provided at the lower end of the second downward extension bar 34; the inner arc wall 23 is provided with a square wall 36 on the inner wall of its bending section, when the finger presses the second driving member 16, the second folded cross section 35 moves down to just below the square wall 36, and the finger then directionally massages and manipulates the upper surface of the second locking block 33, and the second folded cross section 35 is locked below the square wall 36, and the second telescopic tongue 7 is in a retracted state.

[0027] like Fig.10 , Fig.11 As shown, the lock body 1 has notches on both sides of the opening cavity 5 , with the outer sides of the notches being open and the inner sides being closed.

[0028] like Fig.15 , Fig.17 As shown, the bottom of the first driving member 10 and the bottom of the second driving member are both provided with a spring receiving hole 37 , and the corresponding compressed spring 11 is installed in the spring receiving hole 37 .

[0029] The block portion 9 of the first telescopic tongue 6 and the second telescopic tongue 7 is provided with a spring receiving hole 37, and the corresponding compression spring 11 is installed in the spring receiving hole 37; or Fig.12 , Fig.13As shown, the block-shaped portions 9 of the first telescopic tongue 6 and the second telescopic tongue 7 are provided with pins 38 suitable for the compression spring 11 to be inserted into, and the corresponding compression spring 11 is sleeved outside the pins 38 .

[0030] like Fig.14 As shown, one or two rectangular through holes 27 are opened in the first pit 26 along its length direction, and the first downward extension bar 29 below the first blocking block 28 passes through the rectangular through holes 27 in the first pit 26 or passes through one of the rectangular through holes 27 .

[0031] like Fig.14 , Fig.16 As shown, the upper surface of the first locking block 28 and the upper surface of the second locking block 33 are both provided with multiple rows of concave and convex grooves 39 suitable for finger pressing.

[0032] like Fig.18 , Fig.19 As shown, the mounting seat of the insert body 2 and the insertion head 3 extending from the mounting seat are stepped and are an integral plastic injection molded part. A second bottom cover plate 40 is also stepped and is also integral and suitable for being pasted to the side of the refrigerator body. Both are plastic injection molded parts. The insert body 2 is assembled from a main body part 43 and a second bottom cover plate 40.

[0033] like Fig.18 , Fig.21 , Fig. 22 As shown, a long strip-shaped through hole 41 is provided on the mounting seat of the insert body 2, and a protruding rib 42 is provided at a corresponding position of the second bottom cover plate 40, and the protruding rib 42 passes through the long strip-shaped through hole 41 and is flush with the top of the mounting seat.

[0034] For ease of installation, double-sided adhesive tape can be attached to the bottom surface of the first bottom cover plate 20 and the bottom surface of the second bottom cover plate 40, respectively. The adhesive tape can be a high-quality and durable double-sided tape produced by 3M. During installation, the protective film on the double-sided tape can be torn off, and the refrigerator door lock that prevents children from opening of the present invention can be pasted and installed on a target appliance such as a refrigerator door. When used as a refrigerator door lock, the lock body 1 can be pasted and installed on the side of the refrigerator door, and the insert body 2 can be pasted and installed on the side of the refrigerator body. During installation, it is necessary to pay attention to pasting and installing the lock body 1 and the insert body 2 at the same height position of the refrigerator. When closing the refrigerator door, the insertion head 3 of the insert body 2 is inserted into the opening cavity 5 of the lock body 1, and the insertion head 3 overcomes the compression springs 11 of the first telescopic tongue 6 and the second telescopic tongue 7, and then retracts and then pops out under the action of their respective compression springs 11, and is stuck in the notches 4 on both sides of the insertion head 3, so that the refrigerator door lock that prevents children from opening of the present invention is locked.

[0035] When unlocking, press the first driving member 10 and the second driving member 16 with your fingers to unlock. The first driving member 10 and the second driving member 16 of the refrigerator door lock that prevents children from opening in this embodiment form two independent first lock members and second lock members, and each single lock member can also lock. In addition, press the first stop block 28 so that the first folding section 30 is stuck under the inner folding wall 24, the first telescopic tongue 6 is in a retracted state, and the first lock member is in an unlocked state; press the second stop block 33 so that the second folding section 35 is stuck under the angle ruler wall 36, the second telescopic tongue 7 is in a retracted state, and the second lock member is in an unlocked state.

[0036] The refrigerator door lock that prevents children from opening in this embodiment requires two consecutive actions to press the first telescopic mechanism and the second telescopic mechanism respectively to open the door. For people who know how to open the lock, the locking and unlocking operations are very convenient; but for children who do not know how to open the lock and have insufficient intelligence, no matter how the children press randomly, it is almost impossible to open the lock, and the probability of the children randomly pressing the lock to open the lock is almost zero.

Claims

1. A refrigerator door lock for preventing children from opening the door, comprising a lock body (1) for mounting on the side of the refrigerator door and an insert body (2) for mounting on the side of the refrigerator body; the insert body (2) comprises a mounting seat and an insert head (3) extending from the mounting seat, and notches (4) are provided on both sides of the insert head (3); the lock body (1) comprises an open cavity (5) for inserting the insert body (2); the characteristics are as follows: The lock body (1) is provided with a first telescopic tongue (6) and a second telescopic tongue (7) on both sides of the open cavity (5), respectively; the first telescopic tongue (6) and the second telescopic tongue (7) are independently driven by a first telescopic mechanism and a second telescopic mechanism, respectively, without interfering with each other and without linkage; the first telescopic mechanism and the second telescopic mechanism are independently provided on the lock body (1), and independently drive the extension or retraction of the telescopic tongue; the extended state of the telescopic tongue is a locked state and is a normal state, and the retracted state of the telescopic tongue is an unlocked state and is an abnormal state.

2. The refrigerator door lock that prevents children from opening as claimed in claim 1, characterized in that: The first telescopic tongue (6) and the second telescopic tongue (7) both include a semi-arc tongue-shaped portion (8) and a block-shaped portion (9), wherein the semi-arc tongue-shaped portion (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) is provided with a first slope (12); the first driving member (10) is provided with a first extension rod (13); the arc surface end (14) of the first extension rod (13) supports the first slope (12) of the first telescopic tongue (6); a compression spring (11) is provided between the rear side surface (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 The body (1) is also provided with a first locking mechanism for keeping the first telescopic tongue (6) in a retracted state; the second telescopic mechanism comprises a second telescopic tongue (7), a second driving member (16), and a compression spring (11); the second telescopic tongue (7) is provided with a second slope (17); the second driving member (16) is provided with a second extension rod (18); the arc surface end (14) of the second extension rod (18) abuts against the second slope (17) of the second telescopic tongue (7); a compression spring (11) is provided between the rear side surface (15) of the block portion (9) of the second telescopic tongue (7) and the adjacent end wall of the lock body (1); a compression spring (11) is also provided between the bottom of the second driving member (16) and the adjacent bottom wall of the lock body (1); the lock body (1) is also provided with a second locking mechanism for keeping the second telescopic tongue (7) in a retracted state.

3. The refrigerator door lock that prevents children from opening as claimed in claim 2, characterized in that: The components of the lock body (1) are all plastic injection molded parts except the compression spring (11) which is a metal part. The lock body (1) comprises an open shell (19) and a first bottom cover plate (20) suitable for being adhered to the side of the refrigerator door. The open shell (19) comprises an arc wall (21), an outer arc wall (22) and an inner arc wall (23) extending inward from the arc wall (21), and an inner folded wall (24). The inner arc wall (23) forms a bending section and forms the open cavity (5) together with the arc wall (21). The inner arc walls (23) on both sides of the open cavity (5) are provided with notches for the first telescopic tongue (6) and the second telescopic tongue (7) to be telescoped. The first telescopic tongue (6) and the second telescopic tongue (7) are provided with notches for the first telescopic tongue (6) and the second telescopic tongue (7) to be telescoped. A compression spring (11) is arranged between the inner folded walls (24), a first notch (25) is arranged on the inner arc wall (23), the first driving member (10) is inserted into the first notch (25), and a compression spring (11) is arranged between the bottom of the first driving member (10) and the inner folded wall (24); the first locking mechanism is arranged as follows: a first recess (26) is arranged on the first driving member (10), a rectangular through hole (27) is arranged in the first recess (26) along its length direction, a first locking block (28) is arranged on the first recess (26), the upper surface of the first locking block (28) is suitable for finger-directed massage, and a first downward extending strip (27) extending downward is arranged below the first locking block (28). 9), passes through the rectangular through hole (27) in the first concave pit (26), and a first folding transverse section (30) is provided at the lower end of the first downward extension bar (29). When the finger presses the first driving member (10), the first folding transverse section (30) moves down just below the inner folding wall (24) where it is located, and the finger then massages and moves the upper surface of the first stop block (28) in a directional manner, and the first folding transverse section (30) is stopped below the inner folding wall (24) where it is located, and 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) where it is located, and a second notch (31) is provided on the outer arc wall (22) above the opening cavity (5), and the second driving member (16) is moved from the second notch. The second driving member (16) is inserted into the opening (31), and a compression spring (11) is arranged between the bottom of the second driving member (16) and the bent section of the inner arc wall (23); the second locking mechanism is arranged as follows: a second recess (32) is arranged on the second driving member (16), a rectangular through hole (27) is arranged in the second recess (32) along the longitudinal direction thereof, a second locking block (33) is arranged on the second recess (32), the upper surface of the second locking block (33) is suitable for finger-directed massage and manipulation, a second downward extending strip (34) extending downward is arranged below the second locking block (33) and passes through the rectangular through hole (27) in the second recess (32), and a second folded horizontal section (35) is arranged at the lower end of the second downward extending strip (34);The inner arc wall (23) is provided with a square wall (36) on the inner wall of the bending section thereof. When the second driving member (16) is pressed by a finger, the second folding transverse section (35) moves downward just below the square wall (36) where it is located. The finger then massages and moves the upper surface of the second stop block (33) in a directional manner, and the second folding transverse section (35) is stopped below the square wall (36) where it is located, and the second telescopic tongue (7) is in a contracted state. ; 4. The refrigerator door lock that prevents children from opening as claimed in claim 3, characterized in that: The lock body (1) has notches on both sides of the open cavity (5), and the outside of the notches is open and the inside is closed.

5. The refrigerator door lock that prevents children from opening as claimed in claim 3, characterized in that: The bottom of the first driving member (10) and the bottom of the second driving member are both provided with a spring receiving hole (37), and the corresponding compressed spring (11) is installed in the spring receiving hole (37).

6. The refrigerator door lock that prevents children from opening as claimed in claim 3, characterized in that: The block-shaped parts (9) of the first telescopic tongue (6) and the second telescopic tongue (7) are provided with spring accommodating holes (37), and the corresponding compression springs (11) are inserted into the spring accommodating holes (37); or the block-shaped parts (9) of the first telescopic tongue (6) and the second telescopic tongue (7) are provided with pins (38) suitable for the compression springs (11) to be inserted, and the corresponding compression springs (11) are sleeved outside the pins (38).

7. The refrigerator door lock that prevents children from opening as claimed in claim 3, characterized in that: One or two rectangular through holes (27) are provided in the first pit (26) along its length direction, and a first downward extension bar (29) below the first stop block (28) passes through the rectangular through holes (27) in the first pit (26) or passes through one of the rectangular through holes (27).

8. The refrigerator door lock that prevents children from opening as claimed in claim 3, characterized in that: The upper surfaces of the first locking block (28) and the second locking block (33) are both provided with multiple rows of concave and convex grooves (39) suitable for finger pressing.

9. The refrigerator door lock that prevents children from opening as claimed in claim 1, characterized in that: The mounting seat of the insert (2) and the insertion head (3) extending from the mounting seat are a plastic injection molded part in a stepped shape and are an integral part. A second bottom cover plate (40) in a stepped shape and is also an integral part suitable for being adhered to the side of the refrigerator body is also provided. Both are plastic injection molded parts. The insert (2) is assembled from a body part (43) and a second bottom cover plate (40).

10. The refrigerator door lock that prevents children from opening as claimed in claim 2, characterized in that: A long strip-shaped through hole (41) is provided on the mounting seat of the insert (2), and a raised rib (42) is provided at a corresponding position of the second bottom cover plate (40). The raised rib (42) passes through the long strip-shaped through hole (41) and is flush with the top of the mounting seat.

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