Door lock and household appliance

Abstract

The door lock comprises a mounting frame, the mounting frame is provided with two door hooks distributed in the left-right direction, each door hook comprises an end part, a connecting part and a hook part, and the end parts are connected with the hook parts through the connecting parts; the end part is accommodated in the mounting frame, and the connecting part extends backwards, so that the hook part extends out of the mounting frame; the end part is rotationally connected with the mounting frame, and the connecting part is connected with an elastic piece, so that the two hook parts can be close to or far away from each other under the elastic force action of the elastic piece; the installation frame is further provided with one or more electromagnets, the electromagnets are located beside the two end portions, the two door hooks are respectively connected with metal strips, and the two metal strips can be respectively and fixedly connected with the electromagnets. The dishwasher is reasonable in structural design, the electromagnet can be electrically connected with the child lock, and children are prevented from opening the dishwasher door by mistake in the washing process.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a door lock and a household appliance. Background Art

[0002] A dishwasher is a kind of household appliance. Some dishwasher door locks on the market currently only use a mechanical mechanism to buckle the door hook installed on the door body, and the door buckle driver triggers the micro switch, so that the dishwasher determines that the door is closed and can be washed. When the door is opened, the door buckle driver disengages the micro switch, so that the dishwasher determines that the door is opened, stops working, cannot work, or interrupts work.

[0003] Since the door is only fastened and not locked, children may accidentally open it. Once the door is opened in high-temperature washing mode, the washing steam will escape immediately due to the pressure difference between the inside and outside. Both adults and children will be at risk of burns and accidental injuries from the high-temperature steam.

[0004] For example, the dishwasher of the authorization announcement number CN103584814 B does not have a locking function on the door, but only buckles the door, and the micro switch coordinated by the switch and the printed circuit board determines whether the door is open or closed to control whether the dishwasher is working. Although the dishwasher is shut down by the signal judgment of whether the dishwasher door is open or closed, when washing at high temperature, once it is opened during the washing process, the high-temperature water vapor can still easily hurt people, especially children's eyes (for example, the residual hot washing steam of the dishwasher is not very friendly to children, especially the hot steam escaping when the door is opened may damage children's eyes). Summary of the invention

[0005] The purpose of the present invention is to provide a door lock so as to more reliably fasten the door. The door is locked by energizing the electromagnet, and the door is unlocked by de-energizing the electromagnet after the household appliance finishes working. Furthermore, a child lock button can be provided on the household appliance to connect the electromagnet, so as to prevent children from triggering the unlocking and opening of the door during the washing process of the household appliance, thereby playing a dual protection role.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a door lock, including a mounting frame, the mounting frame is provided with two door hooks distributed along the left and right sides, the door hook includes an end, a connecting portion, and a hook portion, the end portion is connected to the hook portion through the connecting portion; the end portion is accommodated in the interior of the mounting frame, and the connecting portion extends toward the rear so that the hook portion extends out of the mounting frame; the end portion is rotatably connected to the mounting frame, and the connecting portion is connected to an elastic member so that the two hook portions can approach or move away from each other under the elastic force of the elastic member; the mounting frame is also provided with one or more electromagnets, the electromagnets are located on one side of the two end portions, and metal strips are respectively connected to the two door hooks, and the two metal strips can be magnetically fixedly connected to the electromagnets respectively.

[0007] Furthermore, one or more of the electromagnets are housed inside the mounting frame, and the electromagnets are located in front of the two end portions; one end of the metal strip extends forward over the end portion, and the other end of the metal strip extends backward over the end portion, so that the front end of the metal strip can be magnetically fixedly connected to the electromagnet, and the rear end of the metal strip is connected and fixed to the connecting portion.

[0008] Furthermore, two rotating shafts distributed along the left and right sides are also provided inside the mounting frame, and one or more electromagnets are located in front of the two rotating shafts; shaft holes are provided on the ends, and the two ends are rotatably connected to the two rotating shafts respectively through the shaft holes.

[0009] Furthermore, baffles are provided on the left and right sides of the rotating shaft respectively, and the door hook and the metal bar are swingably arranged between the baffles on the left and right sides.

[0010] Furthermore, a movable opening is provided at the rear lower end of the mounting frame, and the rear ends of the two connecting parts are bent toward the rear lower part and pass through the movable opening, so that the two hooks are located at the rear lower part of the mounting frame; the two hooks are bent toward opposite sides, and a fixing block is provided at the bottom of the mounting frame, and a Y-shaped slide groove with a notch facing the rear is provided in the middle part of the fixing block, and the two hooks are located behind the Y-shaped slide groove.

[0011] Furthermore, a sliding groove extending frontward and rearward is provided at the bottom of the mounting frame, the sliding groove is located at the front upper part of the fixed block, and the two ends are respectively located at the left rear and right rear of the sliding groove; a door sensing slider is provided inside the sliding groove, the front end of the door sensing slider is connected to the door sensing slider spring, and the rear end of the door sensing slider is bent downward and extends into the Y-shaped sliding groove; a circuit board is provided on the left front wall or the right front wall of the sliding groove, the door sensing slider cooperates with the circuit board, and the circuit board is electrically connected to the electromagnet.

[0012] Furthermore, a groove opening upward is provided inside the fixing block, the Y-shaped slide groove runs upward through the middle of the groove, and the rear end of the door sensing slider is bent downward and extends into the groove; the mounting frame includes a bottom shell and an upper cover, and the door hook is a plastic door hook or an iron door hook or a plastic-coated iron hook.

[0013] Furthermore, elastic members are respectively provided on opposite sides of the two connecting parts, and positioning blocks are respectively provided on opposite sides of the two connecting parts, and the two positioning blocks can be positioned and abutted together.

[0014] Furthermore, the elastic member is a compression spring, the left and right side walls of the mounting frame are respectively provided with a first abutment groove, the opposite sides of the two connecting parts are respectively provided with a second abutment groove, and the two ends of the compression spring are respectively installed in the first abutment groove and the second abutment groove.

[0015] A household appliance comprises a household appliance body and also comprises the door lock described in the above technical solution; the household appliance body is provided with a household appliance door that can be opened and closed, and the household appliance door is locked and matched by the door lock and a bolt head; a "child lock" is provided on the control panel of the household appliance body, a door closing signal micro switch is provided on the circuit board, and the door sensing slider cooperates with the door closing signal micro switch; the first end and the third end of the circuit board, the "child lock", and the door closing signal micro switch are electrically connected to form a door sensing circuit, and the first end or the third end of the circuit board is electrically connected to the second end of the circuit board, the "child lock", and the electromagnet to form an electromagnet locking circuit; when the "child lock" is in the unlocked state, the household appliance door can be opened.

[0016] In summary, the technical solution of the present invention has the following beneficial effects: the structural design of the present invention is reasonable, (1) by including a mounting frame, the mounting frame is provided with two door hooks distributed along the left and right sides, the door hook includes an end portion, a connecting portion, and a hook portion, the end portion is connected by the connecting portion and the hook portion; the end portion is accommodated in the mounting frame, and the connecting portion extends toward the rear so that the hook portion extends out of the mounting frame; the end portion is rotatably connected to the mounting frame, and the connecting portion is connected to the elastic member, so that the two hook portions can move closer to or farther away from each other under the elastic force of the elastic member; so that when the dishwasher door (or the door of other household appliances) is closed, the latch head can be engaged with the two door hooks, and when the dishwasher door is opened, the latch head can be separated from the two door hooks, and the presence of the elastic member enables the two door hooks to have the ability to be elastically reset. (2) One or more electromagnets are also provided through the mounting frame. The electromagnets are located on the sides of the two ends. Metal strips are connected to the two door hooks respectively. The two metal strips can be magnetically fixedly connected to the electromagnets respectively. Thus, the metal strips of the two door hooks are respectively matched with the electromagnets. When the electromagnets are energized, the metal strips are attracted and fixed, which has the function of locking the dishwasher door (or the door of other household appliances). When the electromagnets are not energized, the metal strips can be separated from the electromagnets, so that the dishwasher door can be opened. From the above analysis, it can be seen that the electromagnet of the present invention can be electrically connected to the child lock to prevent children from accidentally opening the dishwasher door during the washing process (that is, to realize the child lock function, it is necessary to press the "child lock" to unlock it). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the three-dimensional structure of the present invention when the upper cover is removed;

[0018] Figure 2 It is a top view of the three-dimensional structure of the present invention;

[0019] Figure 3 It is a top view of the three-dimensional structure of the bolt head matched with the present invention;

[0020] Figure 4 is a top view of a three-dimensional structure of the bottom shell of the present invention;

[0021] Figure 5 is a bottom-view three-dimensional structural schematic diagram of the bottom shell of the present invention;

[0022] Figure 6 is a top view of the three-dimensional structure of the present invention when the mounting frame is removed;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure when the mounting frame is removed when viewed from above;

[0024] Figure 8 It is a top view of the three-dimensional structure of the present invention when the upper cover and one side door hook are removed;

[0025] Fig. 9 It is a schematic diagram of the structure of the circuit board of the present invention being electrically connected to the "child lock" and the electromagnet;

[0026] Description of reference numerals: 1-mounting frame, 2-door hook, 3-elastic member, 4-electromagnet, 5-metal strip, 6-door sensing slider, 7-door sensing slider spring, 8-circuit board, 9-latch head; 10-bottom shell, 11-upper cover; 12-"child lock", 13-door closing signal micro switch;

[0027] 101-rotating shaft, 102-baffle, 103-movable opening, 104-fixed block, 105-Y-shaped slide groove, 106-groove, 107-sliding groove, 108-first abutting groove; 201-end portion, 202-connecting portion, 203-hook portion, 204-axial hole, 205-positioning block, 206-second abutting groove; 80-first end, 803-third end, 802-second end; 901-latch head body, 902-front connecting plate, 903-rear connecting plate, 904-mounting plate, 905-bottom plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0029] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as bottom, the rear of the observer is set as top, the top of the observer is set as front, and the bottom of the observer is set as back. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the present invention, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0030] See also Figures 1 to 9The present embodiment provides a door lock, including a mounting frame 1, wherein the mounting frame 1 is provided with two door hooks 2 distributed along the left and right sides, wherein the door hook 2 includes an end portion 201, a connecting portion 202, and a hook portion 203, wherein the end portion 201 is connected to the hook portion 203 through the connecting portion 202; the end portion 201 is accommodated inside the mounting frame 1, and the connecting portion 202 extends toward the rear so that the hook portion 203 extends out of the mounting frame 1; the end portion 201 is rotatably connected to the mounting frame 1, and the connecting portion 202 is connected to an elastic member 3 so that the two hook portions 203 can be moved closer to or farther from each other under the elastic force of the elastic member 3; the mounting frame 1 is also provided with one or more electromagnets 4, wherein the electromagnets 4 are located beside the two end portions 201, and metal strips 5 are respectively connected to the two door hooks 2, and the two metal strips 5 can be magnetically fixedly connected to the electromagnets 4 respectively. Function: (1) The mounting frame includes two door hooks distributed along the left and right sides, the door hooks include an end portion, a connecting portion, and a hook portion, the end portion is connected by the connecting portion and the hook portion; the end portion is accommodated in the mounting frame, and the connecting portion extends toward the rear so that the hook portion extends out of the mounting frame; the end portion is rotatably connected to the mounting frame, and the connecting portion is connected to the elastic member, so that the two hooks can move closer to or farther away from each other under the elastic force of the elastic member; so that when the dishwasher door (or the door of other household appliances) is closed, the latch head can be engaged with the two door hooks, and when the dishwasher door is opened, the latch head can be separated from the two door hooks, and the presence of the elastic member enables the two door hooks to have the ability to be elastically reset. (2) One or more electromagnets are also provided through the mounting frame. The electromagnets are located on the sides of the two ends. Metal strips are connected to the two door hooks respectively. The two metal strips can be magnetically fixedly connected to the electromagnets respectively. Thus, the metal strips of the two door hooks are respectively matched with the electromagnets. When the electromagnets are energized, the metal strips are attracted and fixed, which has the function of locking the dishwasher door (or the door of other household appliances). When the electromagnets are not energized, the metal strips can be separated from the electromagnets, so that the dishwasher door can be opened. From the above analysis, it can be seen that the electromagnet of the present invention can be electrically connected to the child lock to prevent children from accidentally opening the dishwasher door during the washing process (that is, to realize the child lock function, it is necessary to press the "child lock" to unlock it).

[0031] Specifically, one or more electromagnets 4 are accommodated inside the mounting frame 1, and the electromagnets 4 are located in front of the two ends 201; one end of the metal strip 5 extends forward over the end 201, and the other end of the metal strip 5 extends backward over the end 201, so that the front end of the metal strip 5 can be magnetically fixedly connected to the electromagnet 4, and the rear end of the metal strip 5 is connected and fixed to the connecting portion 202. Function: Such a setting enables the front end of the metal strip 5 to have a sufficient length to cooperate with the electromagnet 4, and the rear end of the metal strip 5 to have a sufficient length to be connected and fixed to the connecting portion 202. Preferably, the metal strip 5 can be an iron sheet. Furthermore, it can also be configured as one or more electromagnets according to needs, preferably two electromagnets here, and the electromagnets are distributed along the left and right sides.

[0032] Specifically, the mounting frame 1 is provided with two rotating shafts 101 distributed along the left and right sides, and one or more electromagnets 4 are located in front of the two rotating shafts 101; an axis hole 204 is provided on the end 201, and the two end portions 201 are rotatably connected to the two rotating shafts 101 through the axis holes 204. Function: The cooperation between the axis hole 204 and the rotating shaft 101 can realize the rotation of the door hook 2.

[0033] Specifically, baffles 102 are respectively provided on the left and right sides of the rotating shaft 101, and the door hook 2 and the metal strip 5 are swingably arranged between the baffles 102 on the left and right sides. Function: The two baffles 102 can provide space for the door hook 2 and the metal strip 5 to swing, and can also provide a limiting function.

[0034] Specifically, the lower rear end of the mounting frame 1 is provided with a movable opening 103, and the rear ends of the two connecting parts 202 are bent toward the lower rear end and pass through the movable opening 103, so that the two hooks 203 are located at the lower rear end of the mounting frame 1; the two hooks 203 are bent toward the opposite sides, and the bottom of the mounting frame 1 is provided with a fixing block 104, and the middle part of the fixing block 104 is provided with a Y-shaped slide groove 105 with a notch facing the rear, and the two hooks 203 are located behind the Y-shaped slide groove 105. Function: The Y-shaped slide groove 105 can cooperate with the two hooks 203 to lock the bolt head 9. In order to better engage with the two door hooks 2, see Figure 1-3 The bolt head 9 includes a bolt head body 901 in a quadrangular shape, and a front connecting plate 902 and a rear connecting plate 903 are respectively provided at the front and rear ends of the bolt head body 901, and a mounting plate 904 is provided at the rear end of the rear connecting plate 903, and a bottom plate 905 is respectively provided at the lower left and lower right sides of the rear connecting plate 903 (of course, other bolt head structures with the same function are also possible). In this way, the working principle is as follows: when the bolt head 9 is pushed forward, the front connecting plate 902 can be pushed forward into the Y-shaped slide groove 105, and the two door hooks 2 are first opened and then closed, so that the two hooks 203 are buckled together with the bolt head body 901; and the mounting plate 904 can drive the bolt head body 901 and the front connecting plate 902 to move forward and backward through the rear connecting plate 903 and the bottom plate 905.

[0035] Specifically, a sliding groove 107 extending forward and backward is also provided at the bottom of the mounting frame 1. The sliding groove 107 is located at the front and upper part of the fixed block 104, and the two end portions 201 are respectively located at the left rear and right rear of the sliding groove 107; a door sensing slider 6 is provided inside the sliding groove 107, the front end of the door sensing slider 6 is connected to the door sensing slider spring 7, and the rear end of the door sensing slider 6 is bent downward and extends into the Y-shaped sliding groove 105; a circuit board 8 is provided on the left front wall or the right front wall of the sliding groove 107, the door sensing slider 6 cooperates with the circuit board 8, and the circuit board 8 is electrically connected to the electromagnet 4. Function: When the bolt head 9 is pushed forward, the front connecting plate 902 can abut the door sensing slider 6 when it is pushed forward into the Y-shaped slide groove 105, and then the door sensing slider 6 compresses the door sensing slider spring 7 forward, and at the same time, the door sensing slider 6 cooperates with the circuit board 8 when it moves forward, so that the circuit board 8 receives the signal that the dishwasher door is closed; and when the bolt head 9 is withdrawn backward, the front connecting plate 902 can withdraw from the Y-shaped slide groove 105 backward, so that the door sensing slider 6 moves backward and resets under the elastic action of the door sensing slider spring 7, and at the same time, the door sensing slider 6 cooperates with the circuit board 8 when it moves backward, so that the circuit board 8 receives the signal that the dishwasher door is opened. The circuit board 8 can be electrically connected to one or more electromagnets 4, so that after the circuit board 8 is electrically connected to the child lock, the child lock can control the power on and off of one or more electromagnets 4 through the circuit board 8.

[0036] Specifically, the interior of the fixing block 104 is provided with a groove 106 opening upward, the Y-shaped slide groove 105 runs upward through the middle of the groove 106, and the rear end of the door sensing slider 6 is bent downward and extends into the groove 106; the mounting frame 1 includes a bottom shell 10 and an upper cover 11, and the door hook 2 is a plastic door hook or an iron door hook or a plastic-coated iron. Function: Because the Y-shaped slide groove 105 is small, the groove 106 can provide enough space for the rear end of the door sensing slider 6 to cooperate with the bolt head; because the fixing block 104 is made on the bottom shell 10, it saves cost and installation, and is convenient for non-professional personnel to operate.

[0037] Specifically, the two connecting parts 202 are provided with elastic members 3 on the opposite sides thereof, and the two connecting parts 202 are provided with positioning blocks 205 on the opposite sides thereof, and the two positioning blocks 205 can be positioned and abutted together. Function: The two elastic mechanisms (elastic members 3) make the door of the household appliance buckled more stably and less prone to deflection, thus providing a stronger buckling door stability and increasing the durability of the household appliance; this is because the two elastic members 3 (such as compression springs) have a more stable function of holding the center of the door, while the existing patent CN103584814 B will cause the door body to shift, because one tension spring contracts and two freely moving door hooks will cause the shift. The setting of the two positioning blocks 205 can cooperate to achieve the positioning of the two connecting parts 202 when they are close to each other. In actual use: the elastic member 3 can be placed horizontally in the left-right direction, or can be placed tilted in the front-back direction, which can be selected according to actual needs.

[0038] Specifically, the elastic member 3 is a compression spring, and the left and right side walls of the mounting frame 1 are respectively provided with a first abutment groove 108, and the opposite sides of the two connecting parts 202 are respectively provided with a second abutment groove 206, and the two ends of the compression spring are respectively installed in the first abutment groove 108 and the second abutment groove 206. Function: The support surface of the compression spring is large, and it is not easy to have installation problems. At the same time, the elastic force of the two compression springs increases the locking ability. The two compression spring structures of this embodiment can achieve the door opening and closing force required by different customers by adjusting the angle. Of course, the elastic member 3 can also be a torsion spring solution, which can be selected according to needs.

[0039] When the two elastic members 3 are actually working, since the two elastic members 3 correspond to the two door hooks 2, only a simple deformation of a part of the parts (such as the elastic member 5) is required to achieve different door opening and closing force requirements of the client (because the greater the elastic force provided by the elastic member, the greater the door opening and closing force required by the client), the door locking force can be freely adjusted, and the operation is convenient, the structure is simple, and it has certain versatility. However, the door lock of the prior art (the existing patent CN103584814B) is a single elastic mechanism that is unstable and has poor durability.

[0040] A household appliance comprises a household appliance body and a door lock of the above technical solution; the household appliance body is provided with a household appliance door which can be opened and closed, and the household appliance door is locked and matched by the door lock and a bolt head 9; a "child lock" 12 is provided on the control panel of the household appliance body, a door closing signal micro switch 13 is provided on the circuit board 8, and a door sensing slider 6 cooperates with the door closing signal micro switch 13; a first end 801 of the circuit board 8 is electrically connected with a third end 803, the "child lock" 12, and the door closing signal micro switch 13 to form a door sensing circuit, and the first end 801 or the third end 803 of the circuit board 8 is electrically connected with a second end 802 of the circuit board 8, the "child lock" 12, and an electromagnet 4 to form an electromagnet locking circuit; when the "child lock" 12 is in an unlocked state, the household appliance door can be opened. Function: The forward and backward movement of the door sensing slider 6 can trigger the door closing signal micro switch 13, thereby determining whether the household appliance door is closed; and the "electromagnet locking circuit" is connected to the "door sensing circuit" as "the electromagnet locking can be triggered only after the door is closed" to prevent "children from playing with household appliance buttons and accidentally triggering the lock".

[0041] In actual work, when the household appliance is a dishwasher, after the dishwasher door is closed, a signal that the dishwasher door has been closed is given, and the child lock gives optional locking and unlocking options. The dishwasher door is locked, and after the dishwasher completes the work, the locked state of the child lock is released so that the dishwasher door can be opened. Since the locking function of the door lock (such as the electromagnet 4 and circuit board 8 of the door lock) can be connected to the child lock, it can be avoided that children accidentally open the door during the washing process. As for the child lock, the relay, circuit breaker, control program, etc. of the dishwasher (household appliance) can be connected to the electromagnet to realize the child lock function, and the "child lock" needs to be pressed to unlock. Conventional technology will not be repeated here.

[0042] As a preferred embodiment, the dishwasher body is provided with a doorway, one side edge of the doorway is rotatably connected to one side edge of the dishwasher door, the other side edge of the doorway is provided with a door lock, and the other side edge of the dishwasher door is provided with a latch 9 (also called a door buckle), so that the door lock and the latch 9 cooperate to realize the opening and closing of the dishwasher door.

[0043] Of course, the door lock of the present invention can be applied to other household appliances with the same needs in addition to dishwashers. It is worth noting that, except for the door lock of the present invention, the remaining components (such as the latch 9, the child lock, etc.) can be provided by the household appliance manufacturer and will not be described in detail here.

[0044] In summary, the existing patent CN103584814 B is a solution for a tension spring, but the solution of the present invention has good stability due to the two compression springs, and has a metal part and an electromagnet with locking cooperation, which can be connected to a child lock, providing a real locking function, and the door can be opened only when the child lock is removed.

[0045] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A door lock, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with two door hooks (2) distributed along the left and right sides, and the door hooks (2) include an end portion (201), a connecting portion (202), and a hook portion (203), wherein the end portion (201) is connected to the hook portion (203) via the connecting portion (202); the end portion (201) is accommodated in the mounting frame (1), and the connecting portion (202) extends toward the rear so that the hook portion (203) extends out of the mounting frame (1); the end portion (201) is connected to the hook portion (203) via the connecting portion (202); The mounting frame (1) is rotatably connected, and the connecting portion (202) is connected to the elastic member (3), so that the two hook portions (203) can move closer to or farther away from each other under the elastic force of the elastic member (3); the mounting frame (1) is also provided with one or more electromagnets (4), and the electromagnets (4) are located beside the two end portions (201). The two door hooks (2) are respectively connected with metal strips (5), and the two metal strips (5) can be respectively magnetically fixedly connected to the electromagnets (4).

2. A door lock according to claim 1, characterized in that: One or more electromagnets (4) are accommodated inside the mounting frame (1), and the electromagnets (4) are located in front of the two end portions (201); one end of the metal strip (5) extends forward over the end portion (201), and the other end of the metal strip (5) extends backward over the end portion (201), so that the front end of the metal strip (5) can be magnetically fixedly connected to the electromagnet (4), and the rear end of the metal strip (5) is connected and fixed to the connecting portion (202).

3. A door lock according to claim 2, characterized in that: The mounting frame (1) is further provided with two rotating shafts (101) distributed along the left and right sides, and one or more electromagnets (4) are located in front of the two rotating shafts (101); an axis hole (204) is provided on the end portion (201), and the two end portions (201) are rotatably connected to the two rotating shafts (101) respectively through the axis hole (204).

4. A door lock according to claim 3, characterized in that: Baffles (102) are respectively provided on the left and right sides of the rotating shaft (101), and the door hook (2) and the metal strip (5) are swingably arranged between the baffles (102) on the left and right sides.

5. A door lock according to any one of claims 1 to 4, characterized in that: The mounting frame (1) is provided with a movable opening (103) at the rear lower end, and the rear ends of the two connecting parts (202) are bent toward the rear lower end and pass through the movable opening (103), so that the two hook parts (203) are located at the rear lower end of the mounting frame (1); the two hook parts (203) are bent toward opposite sides, and a fixing block (104) is provided at the bottom of the mounting frame (1), and a Y-shaped slide groove (105) with a notch facing the rear is provided in the middle of the fixing block (104), and the two hook parts (203) are located behind the Y-shaped slide groove (105).

6. A door lock according to claim 5, characterized in that: The bottom of the mounting frame (1) is also provided with a sliding groove (107) extending forward and backward, the sliding groove (107) is located at the front and upper part of the fixed block (104), and the two end portions (201) are respectively located at the left rear and right rear of the sliding groove (107); a door sensing slider (6) is provided inside the sliding groove (107), the front end of the door sensing slider (6) is connected to the door sensing slider spring (7), and the rear end of the door sensing slider (6) is bent downward and extends into the Y-shaped sliding groove (105); a circuit board (8) is provided on the left front wall or the right front wall of the sliding groove (107), the door sensing slider (6) cooperates with the circuit board (8), and the circuit board (8) is electrically connected to the electromagnet (4).

7. A door lock according to claim 6, characterized in that: The interior of the fixing block (104) is provided with a groove (106) opening upward, the Y-shaped slide groove (105) penetrates upward through the middle of the groove (106), and the rear end of the door sensing slider (6) is bent downward and extends into the groove (106); the mounting frame (1) includes a bottom shell (10) and an upper cover (11), and the door hook (2) is a plastic door hook or an iron door hook or a plastic-coated iron hook.

8. A door lock according to any one of claims 1 to 4, 6 to 7, characterized in that: The two connecting parts (202) are respectively provided with elastic members (3) on opposite sides thereof, and the two connecting parts (202) are respectively provided with positioning blocks (205) on opposite sides thereof, and the two positioning blocks (205) can be positioned and abutted together.

9. A door lock according to claim 8, characterized in that: The elastic member (3) is a compression spring, the left and right side walls of the mounting frame (1) are respectively provided with a first abutment groove (108), the opposite sides of the two connecting parts (202) are respectively provided with a second abutment groove (206), and the two ends of the compression spring are respectively mounted in the first abutment groove (108) and the second abutment groove (206).

10. A household appliance, comprising a household appliance body, characterized in that: The invention also comprises a door lock as claimed in claim 6 or 7; the household appliance body is provided with a household appliance door that can be opened and closed, and the household appliance door is locked and matched by the door lock and the bolt head (9); a "child lock" (12) is provided on the control panel of the household appliance body, a door closing signal micro switch (13) is provided on the circuit board (8), and the door sensing slider (6) cooperates with the door closing signal micro switch (13); the first end (801) and the third end (803) of the circuit board (8), the "child lock" (12), and the door closing signal micro switch (13) are electrically connected to form a door sensing circuit, and the first end (801) or the third end (803) of the circuit board (8) is electrically connected to the second end (802) of the circuit board (8), the "child lock" (12), and the electromagnet (4) to form an electromagnet locking circuit; when the "child lock" (12) is in the unlocked state, the household appliance door can be opened.

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