A child lock device and its household appliance

Abstract

The present invention discloses a child lock device and a household appliance thereof, including: a bracket assembly provided with a vertical groove; a door hook movably arranged below the bracket assembly, and a lock groove with an upward opening is formed on the upper side of the rear end of the door hook; a sliding member movably inserted through the vertical groove in the vertical direction, an unlocking hole is formed at the upper end of the sliding member, and the lower end of the sliding member is selectively inserted into the lock groove; a slider movably arranged on the bracket assembly and located in front of the sliding member, the rear end of the slider movably passes through the unlocking hole, and when the slider moves backward, it can drive the sliding member to move upward; and an elastic member, with opposite ends of the elastic member respectively connected to the slider and the bracket assembly. The child lock device of the present invention prevents the cooking from being terminated due to accidental door opening during the cooking process, and at the same time prevents children and the elderly from opening the door body assembly during or after the cooking process, resulting in scalding or burning, thereby improving the safety of use.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a child lock device and a household appliance thereof. Background Art

[0002] When the elderly or children use electrical appliances for cooking without being familiar with how to use kitchen electrical products safely, it is very easy to get scalded or burned. Some users are eager to open the door and take out food during or after cooking. High-temperature steam and gas in the cavity can easily cause scalds and burns to the human body.

[0003] To reduce the probability of scalds and burns when users use products, the US UL standard requires that kitchen electrical products need to meet the requirements of two-step door opening and one-step door closing, that is, two actions are required to open the door body to put or take food when opening the door.

[0004] Therefore, it is necessary to design a child lock device suitable for household appliances to prevent children and the elderly from accidentally opening the door and prevent scalds and burns caused by users opening the door with one hand. Summary of the Invention

[0005] The present invention aims to solve at least one of the problems existing in the related art to some extent. For this purpose, the present invention provides a child lock device to prevent accidental door opening during cooking from causing cooking termination, and at the same time prevent children and the elderly from opening the door assembly during or after cooking, resulting in scalds or burns, and improve the use safety.

[0006] The present invention also provides a household appliance with the child lock device.

[0007] According to the above-provided child lock device, it is realized by the following technical solutions:

[0008] A child lock device includes: a bracket assembly provided with a vertical groove; a door hook movably arranged below the bracket assembly, and a lock groove with an upward opening is formed on the upper side of the rear end of the door hook; a sliding member movably inserted through the vertical groove up and down, an unlocking hole is formed at the upper end of the sliding member, and the lower end of the sliding member is selectively inserted into the lock groove, that is, the lower end of the sliding member can be inserted into the lock groove directly below it in the state where the sliding member moves downward, or can be separated from the lock groove in the state where the sliding member moves upward; a slider movably arranged on the bracket assembly and located in front of the sliding member, the rear end of the slider movably passes through the unlocking hole, and when the slider moves backward, it can drive the sliding member to move upward; and an elastic member, the opposite ends of the elastic member are respectively connected to the slider and the bracket assembly, and are used to keep the slider always in a forward moving trend.

[0009] In some embodiments, the bracket assembly includes a lower bracket having a U-shaped groove opening forward. The U-shaped groove is formed by enclosing with a rear side and two relatively arranged side sides. Each of the two side sides is provided with a flange bent towards the inside of the U-shaped groove, and the two flanges and the rear side enclose to form the vertical groove.

[0010] In some embodiments, the flange is formed by bending the partial part of the side side towards the inside of the U-shaped groove after being cut and separated from the side side.

[0011] In some embodiments, a limiting structure is provided between the sliding member and the lower bracket of the bracket assembly, and the limiting structure is used for limiting the up-and-down movement of the sliding member.

[0012] In some embodiments, the limiting structure includes a fixed shaft and a vertically arranged limiting hole. The lower end of the sliding member is provided with the limiting hole, the fixed shaft passes through the limiting hole and is fixedly connected to the lower bracket, and the limiting hole can move up and down relative to the fixed shaft.

[0013] In some embodiments, the limiting structure further includes a fastener. The rear end of the fixed shaft is connected to the rear side of the lower bracket, and the front end of the fixed shaft is connected to the two side sides of the lower bracket through the fastener.

[0014] In some embodiments, the bracket assembly further includes an upper bracket. The upper bracket includes a vertical plate and a horizontal plate fixedly connected into an "L" shape. The vertical plate is provided with a horizontal through hole; the slider is arranged on the vertical plate to move back and forth and is located behind the horizontal plate. A push rod extending forward and movably passing through the horizontal through hole is fixedly provided at the front end of the slider. An active inclined wedge cooperating with the upper edge of the unlocking hole is formed on the upper side of the rear end of the slider; the opposite ends of the elastic member are respectively connected to the slider and the vertical plate.

[0015] In some embodiments, a stepped surface or a rear limiting portion is provided on the upper side of the rear end of the slider and behind the active inclined wedge. The stepped surface movably passes through the unlocking hole and abuts against the upper edge of the unlocking hole in the state that the sliding member moves downward. The rear limiting portion is arranged behind the unlocking hole and abuts against the back surface of the sliding member in the state that the sliding member moves downward.

[0016] In some embodiments, a guiding structure is provided between the slider and the horizontal plate, and the guiding structure is used for guiding the back-and-forth movement of the slider.

[0017] In some embodiments, the guiding structure includes a guiding groove and a sliding portion. The transverse plate is provided with the guiding groove arranged in the front-back direction. The bottom of the slider is fixedly provided with a sliding portion extending downward, and the sliding portion is slidably connected with the guiding groove.

[0018] In some embodiments, the transverse plate is further provided with a through hole for the sliding portion to pass through. The through hole is located at the rear side of the guiding groove and communicates with the guiding groove. Card slots are respectively formed on the left and right sides of the sliding portion, and the two card slots are slidably connected with the left and right edges of the guiding groove.

[0019] In some embodiments, the top of the vertical plate is fixedly provided with a mounting portion extending upward. The slider has a cavity with an upward opening. A partitioning portion is fixedly provided in the cavity, and the opposite ends of the elastic member are respectively hooked to the mounting portion and the partitioning portion.

[0020] In some embodiments, a guiding surface located at the rear side of the locking groove is provided on the upper side of the rear end of the door hook. The guiding surface can push the sliding member upward when the door hook moves backward. An arc surface cooperating with the guiding surface is formed at the lower end of the sliding member.

[0021] According to a household appliance provided above, it is realized through the following technical solutions:

[0022] A household appliance includes: a cavity assembly having an inner container with a front opening and a front plate of the inner container. The front plate of the inner container is provided with a first opening for the door hook to pass through; a door body assembly for opening or closing the front opening of the inner container; and a child lock device as described above. The sliding member is mounted on the back surface of the front plate of the inner container through the bracket assembly. The front end of the door hook is fixedly connected to the door body assembly, and the rear end is movably passed through the first opening.

[0023] In some embodiments, a panel assembly is further included. The panel assembly is arranged above the front plate of the inner container and is provided with a second opening. The bracket assembly is mounted on the back surfaces of the panel assembly and the front plate of the inner container, and the push rod of the slider is movably passed through the second opening.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. The child lock device of the present invention has a slider movably inserted through a vertical slot of a bracket assembly in the up-and-down direction, and a door hook is arranged below the bracket assembly and can move back and forth. When the door hook moves backward, it can push the slider upward. The slider moves downward under its own gravity and is inserted into a lock slot of the door hook, so as to lock the door tongue by the slider and restrict the front-and-back movement of the door tongue, realizing mechanical control locking, preventing the cooking from being terminated due to accidental door opening during cooking, and also preventing children and the elderly from opening the door assembly during or after cooking, resulting in scalding or burning, thus improving the use safety.

[0026] 2. By arranging a sliding block movably in the front-and-back direction on the bracket assembly and located in front of the slider, the rear end of the sliding block is movably inserted through an unlocking hole of the slider. When the sliding block moves backward, it can drive the slider to move upward, so that the lower end of the slider disengages from the lock slot and unlocks with the door hook. The opposite ends of an elastic member are respectively connected to the sliding block and the bracket assembly, and the elastic member is used to pull the sliding block forward to the reset position. In this way, mechanical control unlocking is realized, the cost is reduced, and the power consumption is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the child lock device in the locked state in Embodiment 1 of the present invention;

[0028] Figure 2 is a schematic structural diagram of the child lock device in the unlocked state in Embodiment 1 of the present invention;

[0029] Figure 3 is a schematic structural diagram of the lower bracket in Embodiment 1 of the present invention;

[0030] Figure 4 is a schematic structural diagram of the upper bracket in Embodiment 1 of the present invention;

[0031] Figure 5 is a schematic structural diagram of the door tongue in Embodiment 1 of the present invention;

[0032] Figure 6 is a schematic structural diagram of the slider in Embodiment 1 of the present invention;

[0033] Figure 7 is a schematic structural diagram of the sliding block in Embodiment 1 of the present invention;

[0034] Figure 8 is a schematic structural diagram of another sliding block in Embodiment 1 of the present invention;

[0035] Figure 9 is a schematic structural diagram of the fixed shaft and the fastener in Embodiment 1 of the present invention;

[0036] Figure 10 is a schematic structural diagram of the household appliance in Embodiment 2 of the present invention Figure 1 ;

[0037] Figure 11 It is a schematic structure of the household appliance in Embodiment 2 of the present invention Figure 2 .

[0038] In the figure: 1 - Bracket assembly, 11 - Lower bracket, 110 - Vertical groove, 111 - Rear side, 1110 - Large flanging hole, 112 - Side, 1121 - Flange, 1122 - Through hole, 1123 - Screw hole, 113 - Front side, 12 - Upper bracket, 121 - Vertical plate, 1211 - Horizontal through hole, 1212 - Mounting part, 122 - Horizontal plate, 1221 - Guide groove, 1222 - Through hole; 2 - Door hook, 21 - Lock groove, 22 - Guide surface, 23 - Hem; 3 - Sliding part, 31 - Unlock hole, 32 - Limit hole, 33 - Arc surface; 4 - Slide block, 41 - Push rod, 42 - Active inclined wedge, 43 - Step surface, 44 - Rear limit part, 45 - Sliding part, 451 - Card slot, 46 - Cavity, 461 - Partition part, 4611 - Hook hole; 5 - Elastic part; 61 - Fixed shaft, 611 - Limit boss, 612 - Shaft hole, 62 - Fastener, 621 - Thread part;

[0039] 7 - Cavity assembly, 71 - Inner liner, 72 - Inner liner front plate, 721 - First opening; 8 - Door body assembly, 81 - Door handle; 9 - Panel assembly. Specific embodiments

[0040] The following embodiments are used to illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation manners of the present invention or equivalently replacing some technical features without departing from the spirit of the present invention's solution shall be covered within the scope of the technical solution claimed by the present invention.

[0041] Embodiment 1

[0042] This embodiment provides a mechanical child lock device applied to household appliances. The household appliance can be a dishwasher or a cooking device, and the cooking device is a steam box, an oven or a steam oven combination. Referring to Figure 1-2 , the child lock device includes a bracket assembly 1, a door hook 2, a sliding part 3, a slide block 4 and an elastic part 5. Among them, the bracket assembly 1 is used for fixedly installing on the back of the inner liner front plate 72, and it is provided with a vertical groove 110 and a horizontal through hole 1211. The vertical groove 110 is located at the rear lower side of the horizontal through hole 1211. The door hook 2 is movably arranged below the bracket assembly 1 in the front-rear direction, and its front end is used for connecting and fixing the door body assembly 8. An upward-opening lock groove 21 is formed on the upper side of the rear end of the door hook 2. The lock groove 21 is used for locking or unlocking with the lower end of the sliding part 3. In this embodiment, when the door hook 2 moves backward, it can push the sliding part 3 located above it to move upward.

[0043] The slider 3 is vertically movably inserted into the vertical groove 110. The upper and lower ends of the slider 3 respectively protrude from the upper and lower end faces of the vertical groove 110. An unlocking hole 31 for cooperating with the rear end of the slider 4 is formed in the upper end of the slider 3. In this embodiment, the vertical groove 110 not only guides the up and down movement of the slider 3, but also can limit the slider 3 in the front and rear directions. The upper end of the slider 3 is selectively inserted into the locking groove 21 of the door hook 2, that is, the lower end of the slider 3 can be inserted into the locking groove 21 when the slider 3 moves downward, so as to lock the door tongue 3 by the slider 3, restrict the front and rear movement of the door tongue 3, realize mechanical control locking, ensure that the door body assembly 8 cannot open the cavity assembly of the household appliance, prevent the cooking from being terminated due to accidental door opening during cooking, and also prevent children and the elderly from opening the door body assembly 8 during or after cooking, resulting in scalding or burning, and improve the use safety; or, the lower end of the slider 3 can be disengaged from the locking groove 21 when the slider 3 moves upward, so that the slider 3 is unlocked from the door tongue 3. At this time, the door tongue 3 can move back and forth, and the door body assembly 8 can open the cavity assembly of the household appliance. It should be specifically noted that the state where the slider 3 moves downward refers to the slider 3 moving downward to the lowest point; the state where the slider 3 moves upward refers to the slider 3 moving upward to the highest point.

[0044] The slider 4 is arranged on the bracket assembly 1 to move back and forth and is located in front of the slider 3. The rear end of the slider 4 is movably inserted into the unlocking hole 31, and a push rod 41 extending forward and movably inserted into the transverse through hole 1211 is fixedly arranged at the front end of the slider 4. Refer to Figure 2 , when the door body assembly 8 needs to be opened, the user manually presses the push rod 41, so that the push rod 41 drives the slider 4 to move backward. When the slider 4 is pushed to move backward, it can drive the slider 3 to move upward, so that the lower end of the slider 3 is disengaged from the locking groove 21 and unlocked from the door hook 2, realizing mechanical control unlocking or unlocking. At this time, the door body assembly 8 can be opened outward to open the cavity assembly.

[0045] The opposite ends of the elastic member 5 are respectively connected to the slider 4 and the bracket assembly 1, and are used to keep the slider 4 always in a trend of moving forward, so as to pull the slider 4 to move forward to the reset position. In this way, when the external force acting on the slider 4 is removed, the resilience of the elastic member 5 can pull the slider 4 to move forward to the original position, and at this time the elastic member 5 also returns to the initial state.

[0046] Refer to Figure 1 , when the door body assembly 8 needs to be closed, the door body assembly 8 drives the door hook 2 to move backward. When the door hook 2 moves backward, it touches and pushes the slider 3 to move upward. When the door body assembly 8 is completely closed, the slider 3 moves downward under its own gravity and is inserted into the locking groove 21, restricting the front and rear movement of the door tongue 3. At this time, the door body assembly 8 cannot open the cavity assembly of the household appliance.

[0047] Refer to Figure 1-3, the bracket assembly 1 includes a lower bracket 11 for fixedly mounting on the back surface of the inner tank front plate 72. The lower bracket 11 has a U-shaped groove (not shown in the figure) with an opening facing forward, and the U-shaped groove is formed by enclosing a rear side 111 and two relatively arranged side edges 112. The sliding member 3 is vertically movably disposed through the vertical groove 110, and the upper and lower ends of the sliding member 3 respectively protrude from the upper and lower end surfaces of the lower bracket 11.

[0048] A vertically arranged vertical groove 110 is formed in the U-shaped groove of the lower bracket 11. In this embodiment, each of the two side edges 112 is provided with a flange 1121 bent inwardly toward the inside of the U-shaped groove. There is a gap between the two flanges 1121, and the two flanges 1121 and the rear side 111 enclose to form the vertical groove 110. In this way, the two flanges 1121 achieve front limit for the sliding member 3, and the rear side 111 achieves rear limit for the sliding member 3. Optionally, the flange 1121 is formed by bending the local part of the side edge 112 after cutting it from the side edge 112 toward the inside of the U-shaped groove. In this way, while facilitating the rapid prototyping of the flange 1121, the two side edges 112 of the lower bracket 11 are fully utilized, saving materials. In other embodiments, vertically arranged partition plates can be used to replace the two flanges 1121. The left and right ends of the partition plate are respectively welded and fixed to the two side edges 112 of the U-shaped groove, and the vertical groove 110 is defined between the rear plate 111 and the partition plate.

[0049] In this embodiment, the lower bracket 11 further has two front sides 113, and the two front sides 113 are respectively fixedly connected to the front ends of the two side edges 112, so that the lower bracket 11 is in a "ji" or "Ω" shape. In this way, the lower bracket 11 can be reliably fixedly mounted on the back surface of the inner tank front plate 72 through the two side edges 112.

[0050] Reference Figure 1-2 and Figure 4, the bracket assembly 1 further includes an upper bracket 12. The upper bracket 12 is in an "L" shape and includes a vertical plate 121 and a horizontal plate 122 fixedly connected to form an "L" shape. The horizontal plate 122 is located behind the vertical plate 121. The vertical plate 121 is provided with a horizontal through hole 1211. The slider 4 is arranged on the vertical plate 121 to move back and forth and is located behind the horizontal plate 122. A push rod 41 extending forward is fixedly provided at the front end of the slider 4 and movably passes through the horizontal through hole 1211. The push rod 41 passes through the horizontal through hole 1211 and protrudes from the front surface of the vertical plate 121. An active inclined wedge 42 that cooperates with the upper edge of the unlocking hole 31 is formed on the upper side of the rear end of the slider 4. The active inclined wedge 42 can move back and forth through the unlocking hole 31 and is used to push the sliding member 3 upward when the slider 4 moves backward. The opposite ends of the elastic member 5 are respectively connected to the slider 4 and the vertical plate 121. Thus, through the upper bracket 12, the slider 4 is reliably installed on the upper bracket 12, and at the same time, it is convenient for the installation of the elastic member 5, ensuring that after the slider 4 is pushed to move backward and the external force is removed, the resilience of the elastic member 5 can pull the slider 4 to move forward to the original position.

[0051] An installation portion 1212 extending upward is fixedly provided at the top of the vertical plate 121. The slider 4 has a cavity 46 with an upward opening. A partition portion 461 is fixedly provided in the cavity 46. The partition portion 461 divides the cavity 46 into front and rear parts. A hook hole 4611 is provided on the partition portion 461. Refer to Figure 7 Figure 8. The opposite ends of the elastic member 5 are respectively hooked to the installation portion 1212 and the hook hole 4611 of the partition portion 461, thereby realizing the reliable connection of the elastic member 5 to the slider 4 and the vertical plate 121 of the upper bracket 12.

[0052] In order to guide the forward and backward movement of the slider 4 to prevent the slider 4 from shifting during the forward and backward movement, a guiding structure (not shown in the figure) is provided between the horizontal plate 122 and the slider 4. Refer to Figure 1-2 , Figure 4 and Figure 7-8 , in this embodiment, the guiding structure includes a guiding groove 1221 and a sliding portion 45. The horizontal plate 122 is provided with a guiding groove 1221 arranged in the front-rear direction. A sliding portion 45 extending downward is fixedly provided at the bottom of the slider 4. The sliding portion 45 is slidably connected to the guiding groove 1221.

[0053] The horizontal plate 122 is further provided with a through hole 1222 for the sliding portion 45 to pass through. The through hole 1222 is located behind the guiding groove 1221 and communicates with the guiding groove 1221. The length of the through hole 1222 in the left-right direction is greater than the length of the guiding groove 1221 in the left-right direction, so that the through hole 1222 and the guiding groove 1221 together form a T-shaped hole. The sliding portion 45 can freely pass through the through hole 1222. Card slots 451 are respectively formed on the left and right sides of the sliding portion 45. The two card slots 451 are slidably connected to the left and right edges of the guiding groove 1221.

[0054] Optionally, the sliding part 45 is in an inverted "T" shape, including a vertical section and a horizontal section. The horizontal section is located below the horizontal plate 122, and the size of the horizontal section is smaller than the size of the through hole 1222, so as to ensure that the horizontal section can freely pass through the through hole 1222 and then move forward to below the guiding groove 1221. The length of the guiding groove 1221 in the left-right direction is smaller than the length of the horizontal section in the left-right direction, so as to prevent the horizontal section from disengaging upward from the guiding groove 1221. The vertical section is vertically movably arranged in the guiding groove 1221 and the through hole 1222, and the upper end of the vertical section is fixedly connected to the bottom of the slider 4, and the lower end is fixedly connected to the middle position of the top surface of the horizontal section. The left and right ends of the horizontal section and the left and right sides of the vertical section jointly define a clamping groove 451. When installing the slider 4, the sliding part 45 of the slider 4 penetrates through the T-shaped hole (the wider side) of the upper bracket 12, and the slider 4 is pushed forward. As the T-shaped hole becomes narrower, the sliding part 45 of the slider 4 is completely buckled into the upper bracket 12, that is, the left and right edges of the guiding groove 1221 are respectively inserted into the clamping grooves 451 on the left and right sides of the sliding part 45. At this time, the slider can move back and forth relative to the guiding groove 1221; the push rod 41 of the slider 4 extends out of the front surface of the upper bracket 12 through the horizontal through hole 1211 of the upper bracket 12.

[0055] Reference Figure 1-2 and Figure 5-6 , on the upper side of the rear end of the door hook 2, there is a guiding surface 22 located behind the locking groove 21. The guiding surface 22 can push the sliding part 3 upward when the door hook 2 moves backward. In this embodiment, the front end of the door hook 2 is bent leftward or rightward to form a folded edge 23, and the folded edge 23 is used for fixed installation on the door body assembly 8.

[0056] An arc surface 33 that cooperates with the guiding surface 22 is formed at the lower end of the sliding part 3. Through the cooperation of the arc surface 33 and the guiding surface 22, it is convenient for the door hook 2 to push the sliding part 3 upward when moving backward.

[0057] Reference Figure 1-2 and Figure 6-7 , on the upper side of the rear end of the slider 4, there is a step surface 43 located behind the active wedge 42. The step surface 43 movably passes through the unlocking hole 31 and abuts against the upper edge of the unlocking hole 31 in the state where the sliding part 3 moves downward. At this time, by the step surface 43 abutting against the upper edge of the unlocking hole 31, on the one hand, it prevents the slider 4 from disengaging from the unlocking hole 31, and on the other hand, it reliably hooks the sliding part 3 to realize the lower limit position of the sliding part 3. Of course, reference Figure 8 , it is also possible to provide a rear limit part 44 on the upper side of the rear end of the slider 4, which is located behind the active wedge 42. The rear limit part 44 is fixedly arranged on the top surface of the step surface 43 and extends upward. The rear limit part 44 is arranged behind the unlocking hole 31 and abuts against the back surface of the sliding part 3 in the state where the sliding part 3 moves downward, so as to prevent the slider 4 from disengaging forward from the unlocking hole 31.

[0058] In order to limit the up-and-down movement stroke of the sliding member 3 and prevent the sliding member 3 from disengaging upward or downward from the vertical groove 110 of the lower bracket 11, refer to Figure 1 , Figure 3 , Figure 6 and Figure 9 , a limiting structure (not shown in the figure) is provided between the sliding member 3 and the lower bracket 11 of the bracket assembly 1, and the limiting structure is used to limit the up-and-down movement of the sliding member 3.

[0059] The limiting structure includes a fixed shaft 61 and a vertically arranged limiting hole 32. The lower end of the sliding member 3 is provided with a limiting hole 32 for the fixed shaft 61 to pass through. The fixed shaft 61 is horizontally inserted through the limiting hole 32 and fixedly connected to the lower bracket 11, and the limiting hole 32 can move up and down relative to the fixed shaft 61. Thus, through the cooperation of the fixed shaft 61 and the limiting hole 32, it is ensured that the sliding member 3 will not disengage from the vertical groove 110, improving the installation reliability of the sliding member 3. Optionally, the limiting structure further includes a fastener 62. The rear end of the fixed shaft 61 is connected to the rear edge 111 of the lower bracket 11, and the front end of the fixed shaft 61 is connected to the two side edges 112 of the lower bracket 11 through the fastener 62.

[0060] Refer to Figure 1 , Figure 3 and Figure 9 , in this embodiment, the rear edge 111 of the lower bracket 11 is provided with a large flanging hole 1110 for the end of the fixed shaft 61 away from the limiting boss 611 to pass through, the left side edge 112 of the lower bracket 11 is provided with a through hole 1122 for the fastener 62 to pass through, and the right side edge 112 of the lower bracket 11 is provided with a screw hole 1123 corresponding to the through hole 1122. A limiting boss 611 is fixedly provided at the rear end of the fixed shaft 61, and a shaft hole 612 for the fastener 62 to pass through is provided at the front end. The fastener 62 is a screw, the head of the screw is provided with a limiting boss, and the tail of the screw is provided with a threaded portion 621. During installation, the front end of the fixed shaft 61 passes through the large flanging hole 1110 of the lower bracket 11 and the limiting hole 32 of the sliding member 3 from back to front until the limiting boss 611 abuts against the rear edge 111 of the lower bracket 11; then the fastener 62 passes through the through hole 1122 of the lower bracket 11 and the shaft hole 612 of the fixed shaft 61 from left to right in sequence, and the threaded portion 621 of the fastener 62 is fixedly connected to the screw hole 1123 of the lower bracket 11, and the limiting boss of the fastener 62 abuts against the left side edge of the lower bracket 11. Thus, through the fastener 62, the rear end of the fixed shaft 61 is reliably fixedly connected to the lower bracket 11.

[0061] Embodiment 2

[0062] An appliance in this embodiment, the appliance can be a dishwasher or a cooking device, and the cooking device is a steam box, an oven or a steam oven. Refer to Figure 10-11, the household appliance includes a cavity assembly 7, a door body assembly 8, and a child lock device as described in Embodiment 1. The cavity assembly 7 has an inner container 71 with a forward opening and a front panel 72 of the inner container. The front panel 72 of the inner container is disposed around the forward opening of the inner container 71, and the front panel 72 of the inner container is provided with a first opening 721 for the door hook 2 to pass through. The door body assembly 8 is used to open or close the forward opening of the inner container 71. The sliding member 3 is mounted on the back of the front panel 72 of the inner container through a bracket assembly 1. The front end of the door hook 2 is fixedly connected to the door body assembly 8, and the rear end is movably passed through the first opening 721.

[0063] Thus, by arranging the child lock device on the front panel 72 of the inner container and the door body assembly 8, the household appliance meets the requirements of the US UL standard, preventing children from opening the door body assembly 8 during the cooking process or after cooking, resulting in scalding or burning, and also preventing children and the elderly from accidentally opening the door body assembly 8 during the cooking process, causing the cooking to terminate and affecting the cooking effect.

[0064] In this embodiment, a panel assembly 9 is further included. The panel assembly 9 is disposed above the front panel 72 of the inner container and is provided with a second opening (not shown in the figure); the bracket assembly 1 is mounted on the back of the panel assembly 9 and the front panel 72 of the inner container. Specifically, the lower bracket 11 of the bracket assembly 1 is fixedly mounted on the back of the rear panel 72 of the inner container, and the upper bracket 12 of the bracket assembly 1 is fixedly mounted on the back of the panel assembly 9. The push rod 41 of the slider 4 is movably passed through the second opening and protrudes from the front of the panel assembly 9 to ensure that the user can push the slider 4 backward from the front of the panel assembly 9, so that when the slider 4 moves backward, it drives the sliding member 3 to move upward, realizing mechanical control of unlocking, with reliable operation, low cost and strong practicability.

[0065] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A child lock device, characterized in that, Comprising: A bracket assembly (1) provided with a vertical groove (110); A door hook (2) movably arranged back and forth below the bracket assembly (1), and a lock groove (21) with an upward opening is formed on the upper side of the rear end of the door hook (2); A sliding member (3) movably penetrating up and down through the vertical groove (110), the upper and lower ends of the sliding member (3) respectively protruding from the upper and lower end faces of the vertical groove (110), an unlocking hole (31) is formed at the upper end of the sliding member (3), and the lower end of the sliding member (3) is selectively inserted into the lock groove (21); A slider (4) movably arranged back and forth on the bracket assembly (1) and located in front of the sliding member (3), the rear end of the slider (4) movably penetrates through the unlocking hole (31), and when the slider (4) moves backward, it can drive the sliding member (3) to move upward, so that the lower end of the sliding member (3) disengages from the lock groove (21) and unlocks with the door hook (2); and An elastic member (5), the opposite ends of the elastic member (5) are respectively connected to the slider (4) and the bracket assembly (1), and are used to keep the slider (4) always in a forward moving trend.

2. The child lock device according to claim 1, wherein, The bracket assembly (1) includes a lower bracket (11), the lower bracket (11) has a U-shaped groove with a forward opening, the U-shaped groove is formed by enclosing a rear side (111) and two opposite side edges (112), and two flanges (1121) bent towards the inside of the U-shaped groove are respectively provided on the two side edges (112), and the two flanges (1121) and the rear side (111) enclose to form the vertical groove (110).

3. A child lock device according to claim 2, wherein, The flange (1121) is formed by bending the local part of the side edge (112) after cutting it off from the side edge (112) towards the inside of the U-shaped groove.

4. A child lock device according to any one of claims 1-3, characterized in that A limiting structure is provided between the sliding member (3) and the lower bracket (11) of the bracket assembly (1), and the limiting structure is used for limiting the up and down movement of the sliding member (3).

5. The child lock device according to claim 4, characterized in that, The limiting structure includes a fixed shaft (61) and a vertically arranged limiting hole (32), the limiting hole (32) is formed at the lower end of the sliding member (3), the fixed shaft (61) penetrates through the limiting hole (32) and is fixedly connected to the lower bracket (11), and the limiting hole (32) can move up and down relative to the fixed shaft (61).

6. A child lock device according to claim 5, characterized in that, The limiting structure further includes a fastener (62), the rear end of the fixed shaft (61) is connected to the rear side (111) of the lower bracket (11), and the front end of the fixed shaft (61) is connected to the two side edges (112) of the lower bracket (11) through the fastener (62).

7. A child lock device according to claim 1, characterized in that, The bracket assembly (1) further includes an upper bracket (12), the upper bracket (12) includes a vertical plate (121) and a horizontal plate (122) fixedly connected into an "L" shape, and a horizontal through hole (1211) is formed in the vertical plate (121); The slider (4) is arranged on the vertical plate (121) so as to be movable back and forth and is located at the rear side of the horizontal plate (122). A push rod (41) extending forward is fixedly arranged at the front end of the slider (4), and the push rod (41) movably penetrates through the horizontal through hole (1211). An active inclined wedge (42) matching with the upper edge of the unlocking hole (31) is formed on the upper side of the rear end of the slider (4). The opposite two ends of the elastic member (5) are respectively connected to the slider (4) and the vertical plate (121).

8. The child lock device according to claim 7, wherein, A step surface (43) or a rear limiting portion (44) located at the rear side of the active inclined wedge (42) is arranged on the upper side of the rear end of the slider (4). The step surface (43) movably penetrates through the unlocking hole (31) and abuts against the upper edge of the unlocking hole (31) in the state that the sliding member (3) moves downward. The rear limiting portion (44) is arranged at the rear side of the unlocking hole (31) and abuts against the back surface of the sliding member (3) in the state that the sliding member (3) moves downward.

9. The child lock device according to claim 7, characterized in that, A guiding structure is arranged between the slider (4) and the horizontal plate (122), and the guiding structure is used for guiding the back-and-forth movement of the slider (4).

10. The child lock device according to claim 9, characterized in that, The guiding structure includes a guiding groove (1221) and a sliding portion (45). The horizontal plate (122) is provided with the guiding groove (1221) arranged along the front-and-rear direction. A sliding portion (45) extending downward is fixedly arranged at the bottom of the slider (4), and the sliding portion (45) is slidably connected with the guiding groove (1221).

11. A child lock device according to claim 10, characterized in that, The horizontal plate (122) is further provided with a through hole (1222) for the sliding portion (45) to pass through. The through hole (1222) is located at the rear side of the guiding groove (1221) and communicates with the guiding groove (1221). Card slots (451) are respectively formed on the left and right sides of the sliding portion (45), and the two card slots (451) are slidably connected with the left and right edges of the guiding groove (1221).

12. A child lock device according to claim 7, characterized in that, An installation portion (1212) extending upward is fixedly arranged at the top of the vertical plate (121). The slider (4) has a cavity (46) with an upward opening. A partition portion (461) is fixedly arranged in the cavity (46), and the opposite two ends of the elastic member (5) are respectively hooked to the installation portion (1212) and the partition portion (461).

13. The child lock device according to claim 1, characterized in that, A guiding surface (22) located at the rear side of the locking groove (21) is arranged on the upper side of the rear end of the door hook (2). The guiding surface (22) can push the sliding member (3) to move upward when the door hook (2) moves backward. An arc surface (33) matching with the guiding surface (22) is formed at the lower end of the sliding member (3).

14. A household appliance, characterized in that, Comprising: A cavity assembly (7) having an inner container (71) with a front opening and a front inner container plate (72). The front inner container plate (72) is provided with a first opening (721) for the door hook (2) to pass through; A door body assembly (8) for opening or closing the front opening of the inner container (71); and A child lock device according to any one of claims 1-13, wherein the sliding member (3) is mounted on the back surface of the inner tank front plate (72) through the bracket assembly (1), the front end of the door hook (2) is fixedly connected to the door body assembly (8), and the rear end is movably inserted through the first opening (721).

15. The household appliance according to claim 14, characterized in that, It further includes a panel assembly (9), the panel assembly (9) is arranged above the inner tank front plate (72) and is provided with a second opening; the bracket assembly (1) is mounted on the back surfaces of the panel assembly (9) and the inner tank front plate (72), and the push rod (41) of the slider (4) is movably inserted through the second opening.

Images