Electrical equipment and door locks

Abstract

The present invention provides a door lock of an electrical device, which can be inserted into a mounting hole on a panel of the electrical device, and comprises: an upper shell; a door hook hole body arranged on the upper shell, the door hook hole body comprising: a top; a first pair of side walls and a second pair of side walls; a first card edge and a second card edge extending outward from the first pair of side walls respectively, wherein the first card edge is formed with an escape groove; and a locking pendulum block, wherein the locking pendulum block is located below the escape groove and is configured to pivot between an escape position for entering the escape groove and a locking position for rotating out of the escape groove, wherein the locking pendulum block allows the second card edge of the door hook hole body to pivot through the mounting hole on the panel in the escape position and then returns to the locking position to insert the door lock into the mounting hole on the panel. Further, an electrical device with the door lock is also provided.

Description

Technical Field

[0001] The invention relates to a door lock for electrical equipment, and more particularly to a mechanism for fixing the door lock on the inner side of a closed door of an electrical equipment such as a washing machine. Background Art

[0002] At present, the door of an electrical device (such as a washing machine) is locked to the panel of the electrical device through a door lock. Taking a drum washing machine as an example, the locking of its cover plate requires the installation of a fixed door lock to prevent the drum washing machine from rotating at high speed during operation (or still rotating at high speed due to inertia after stopping operation), which may cause harm to the human body.

[0003] At present, door locks on the market are fixed to the front panel of electrical equipment (such as washing machines) by self-tapping screws. This method can be operated almost without training, so it is widely used in various electrical equipment. However, in practice, it is found that door locks using this connection method have the following defects: First, when the washing machine door lock is installed by screws, the screws will easily rust, resulting in problems such as rust on the holes in the washing machine panel and loose door locks; second, reinforcing the door lock by screws is time-consuming and labor-intensive, and tools are required to achieve installation, which is not conducive to improving production efficiency; third, the screw head of the self-tapping screw will be exposed, causing inconsistency with the overall appearance of the electrical equipment, which is particularly obvious and serious after the screws are rusted; fourth, when the door lock needs to be replaced or maintained, it is inconvenient to disassemble, and after repeated disassembly and assembly, the door lock body will be damaged after being screwed in multiple times, and the installation strength will decrease.

[0004] In order to solve these problems, the market has begun to try to assemble door locks without the help of screws. This usually requires opening two additional positioning holes on the washing machine panel. Although the door lock can be installed and removed without the help of screws, the prefabricated positioning holes will also affect the appearance to a certain extent, and tools are still required for disassembly.

[0005] Some people have also proposed a technology for assembling door locks without the help of screws, that is, the door lock is installed on the panel of the electrical equipment by means of a lock head that can be rotated in and out of the groove and is integrally formed with the door lock housing. However, it is found in practice that this type of method using prefabricated lock heads has high requirements on the precision and process of injection molding of the door lock housing. If the dimensional accuracy of the lock head is insufficient, the door lock with the lock head cannot be reliably installed on the door panel of the electrical equipment. Furthermore, if the lock head fails during use, the entire door lock cannot be used any more, resulting in a great waste. Therefore, this technology still has certain shortcomings when it is widely used in door locks.

[0006] Therefore, there is still a need in the industry to provide a door lock for electrical equipment that is reliable to install and easy for operators to install and remove. Summary of the invention

[0007] The present invention aims to provide a door lock for an electrical device which can at least partially solve the above-mentioned deficiencies of the prior art, and can conveniently and quickly install the door lock into a mounting hole on a panel of the electrical device without the aid of fasteners such as screws.

[0008] According to one aspect of the present invention, a door lock of an electrical device is provided, which can be inserted into a mounting hole on a panel of the electrical device, and is characterized in that it comprises: an upper shell; a door hook hole body arranged on the upper shell, and the door hook hole body comprises: a top; a first pair of side walls and a second pair of side walls arranged oppositely extending downward from the bottom of the top; a first card edge and a second card edge extending outward from the top of the door hook hole body respectively from the first pair of side walls, wherein the lower surface of the first card edge is recessed upward to form an avoidance groove; and a locking pendulum block pivotally mounted in the upper shell, wherein the locking pendulum block is located below the avoidance groove and is configured to pivot between an avoidance position entering the avoidance groove and a locking position rotating out of the avoidance groove, wherein the locking pendulum block allows the second card edge of the door hook hole body to pivot through the mounting hole on the panel in the avoidance position and then returns to the locking position to insert the door lock into the mounting hole on the panel.

[0009] Therefore, compared with the prior art, the door lock of the electrical equipment according to the present invention enables the operator to install the door lock more simply and easily, and is more suitable for installing the door lock in a small space. It is particularly advantageous that the locking pendulum block of the door lock does not need to be pre-made in an integrated manner with the door lock housing, which significantly reduces the difficulty and cost of making the door lock. Furthermore, since the dimensional accuracy requirements of the locking pendulum block are low, this is beneficial for production and assembly, and even if the locking pendulum block is worn or fails, only the locking pendulum block needs to be replaced without discarding the entire door lock.

[0010] In a preferred embodiment, it further comprises: a return spring fixedly disposed in the upper housing, wherein the return elasticity applies a return force to the locking pendulum block to bias it toward the locking position.

[0011] In a preferred embodiment, the locking pendulum block includes: a pendulum shaft pivotally supported in the upper shell, thereby allowing the locking pendulum block to pivot below the avoidance groove; a hook located on one side of the pendulum shaft and capable of engaging with the panel; and a receiving portion located on the other side of the pendulum shaft for accommodating the leg of the reset spring.

[0012] In a preferred embodiment, the locking pendulum block further comprises an unlocking portion located at the back side of the hook, wherein the unlocking portion is configured to be externally accessible through the door hook hole body for receiving a thrust from the outside, thereby pivoting the locking pendulum block from the locking position to the avoidance position. Thus, compared with the prior art, an operator is allowed to remove the door lock from the panel without complicated tools.

[0013] In a preferred embodiment, the locking pendulum block further comprises an operating portion disposed below the hook, which is configured to allow the locking pendulum block to be pivoted from the locking position to the avoidance position by lifting the operating portion. Thus, compared with the prior art, the operator is allowed to remove the door lock from the panel without complicated tools.

[0014] In a preferred embodiment, the inner contour of the hook is designed so that when the locking pendulum block is hung on the edge of the mounting hole, the hook can be stopped at the edge of the mounting hole thereby allowing the second edge of the door hook hole body to pivot through the mounting hole on the panel.

[0015] In a preferred embodiment, there is a predetermined height between the lower surfaces of the first card edge and the second card edge and the upper shell, and the predetermined height is substantially the same as the thickness of the panel.

[0016] In a preferred embodiment, the width of the avoidance groove is substantially the same as the width of the hook of the locking pendulum block.

[0017] According to another aspect of the present invention, there is provided an electrical device, comprising a panel, wherein the panel is provided with a mounting hole, and wherein the electrical device comprises: a door lock, wherein the door hook hole body of the door lock is mounted in the mounting hole.

[0018] In a preferred embodiment, the electrical appliance is a washing machine.

[0019] Some of the other features and advantages of the present invention will be apparent to those skilled in the art after reading this disclosure, and the other parts will be described in the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 The figure shows a front perspective structural diagram of the door lock of the present invention;

[0022] Figure 2 Yes Figure 1 A schematic diagram of the three-dimensional structure of the middle door lock, in which part of the upper shell is removed to better show the interior of the door lock;

[0023] Figure 3 Yes Figure 1 A side view of the upper housing of the door lock;

[0024] Figure 4 yes Figure 3 A side cross-sectional view of an upper housing of a door lock in FIG.

[0025] Figure 5 yes Figure 1 A bottom view of the upper housing of the door lock in which the back side structure of the first card edge is better shown;

[0026] Figure 6 yes Figure 1 A bottom view of the upper housing of the door lock in FIG. 1 , wherein a return spring and a locking pendulum block are additionally provided;

[0027] Figure 7 yes Figure 1 A bottom view of the upper housing of the door lock in which a return spring is additionally provided;

[0028] Fig. 8A -C shows Figure 1 The locking pendulum block of the door lock;

[0029] Fig. 9 A panel 200 of an electrical device and a door lock 100 are shown;

[0030] Figure 10-14 The process of installing the door lock 100 on the panel 200 of the electrical equipment is shown;

[0031] Figure 15-18 The process of removing the door lock 100 from the panel 200 of the electrical device is shown.

[0032] Description of Reference Numerals

[0033] 100. Door lock 101. Door hook hole body 101A. First card edge 101B. Second card edge 101C. Avoidance groove 101D. Support hole 101E. Side wall 101F. Side wall 102. Upper shell 103. Lower shell 104. Locking pendulum block 104A. Hook 104B. Swing shaft 104C. Operating part 104D. Unlocking part 104E. Accommodating part 105. Reset spring 106. Switch box 200. Panel 201. Mounting hole 300. Tool rod H. Predetermined height X. Door lock width direction Y. Door lock length direction Z. Door lock height direction DETAILED DESCRIPTION

[0034] Now, with reference to the accompanying drawings, a schematic scheme of a door lock of an electrical device disclosed in the present invention is described in detail. Although the accompanying drawings are provided to present some embodiments of the present invention, the accompanying drawings do not have to be drawn according to the dimensions of the specific embodiments, and certain features may be enlarged, removed or partially cut away to better illustrate and explain the disclosure of the present invention. Some components in the accompanying drawings may be adjusted in position according to actual needs without affecting the technical effect. The phrase "in the accompanying drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0035] It should be noted that when a component is referred to as being "fixed" to another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "supported" or "supported" or "set" or "installed" on another component, it may be directly supported or supported or placed on another component or there may be a centered component at the same time. Certain directional terms used to describe the accompanying drawings below, such as "horizontal", "vertical", "front", "back", "inside", "outside", "left", "right", "above", "below" and other directional terms, will be understood to have their normal meanings and refer to those directions involved when looking at the drawings normally. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art. The terms "first", "second" and similar terms used in the present invention do not represent any order, quantity or importance in the present invention, but are used to distinguish one component from other components.

[0036] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] In order to facilitate the description of the specific embodiment, the width direction of the door lock 100 of the electrical device is taken as the x direction (first direction), the length direction of the door lock 100 is taken as the y direction (second direction), and the height direction of the door lock 100 is taken as the z direction (third direction) for exemplary description in this application. Here, the door lock 100 can be inserted into the mounting hole on the panel of the electrical device by the operator without special training without the aid of screws or other types of fasteners. Specifically, the door lock 100 of the electrical device can be installed to the inner side of the panel 200 of the electrical device, which is preferably a washing machine. For this purpose, the panel 200 is provided with a mounting hole 201, and the door hook hole body 101 of the door lock 100 can be pivoted from the inner side of the panel through the mounting hole 201 and engaged with the mounting hole 201. Accordingly, the edge of the device door of the washing machine electrical device is preferably provided with a door hook. When the device door is closed, the door hook can be inserted into the door lock 100 through the opening of the door hook hole body 101, and hooked on the switch mechanism (not shown) of the door lock 100, such as a cam, to lock the door of the electrical device. Because omitting the specific structural details of the internal components of the door lock 100 that implement the door locking function has no impact on the understanding of the present invention for those skilled in the art, the structure of the internal components of the door lock 100 that implement the door locking function will not be described in further detail.

[0038] Figure 1 1 is a schematic diagram of the three-dimensional structure of the door lock 100 of the electrical device in this application. Figure 1 As shown, the door lock 100 is preferably formed by two injection-molded housing halves: an upper housing 102 located at the upper part and a lower housing 103 located at the lower part of the upper housing 102, thereby allowing various components of the door lock 100 to be assembled inside the door lock 100 (some built-in components will be described in detail below). Figure 1 As shown, a door hook hole body 101 with a door hook hole is provided on the front side (i.e., on the upper shell 102) on the left side in the width direction of the door lock 100. Here, the door hook hole is used to receive a lock hook (not shown) set on the door of the electrical device. As an example, the door hook hole body 101 is rectangular. In other examples, the door hook hole body 101 can also be a square or other shape. The door hook hole body 101 has a top protruding from the upper shell 102 to a certain height, and extends downward from the bottom of the top to form a first pair of side walls, including a left side wall 101E and a right side wall 101F (at the left side wall 101E and the right side wall 101F). Figure 4 ) and a second pair of side walls, including a front side wall and a rear side wall. Because of the obstruction of the door hook hole body 101, Figure 1 The left side wall 101E and the right side wall 101F are not shown in the figure. Their specific structures are shown in Figure 2 and 4 symmetrically in the width direction of the door lock 100 ( Figure 1A pair of oppositely disposed card edges 101A and 101B (left card edge or first card edge 101A; right card edge or second card edge 101B) are extended outward from the left side wall 101E and the right side wall 101F, respectively. Figure 4 According to the embodiment of the present application, the door lock 100 can be installed in the mounting hole 201 on the panel 200 of the electrical equipment (such as Figures 9 to 14 as shown).

[0039] Figure 2 for Figure 1 The left view of the middle door lock 100 is used to show the relative position relationship between the first card edge 101A of the door hook hole body 101, the locking pendulum block 104 and the return spring 105 in the upper shell 102.

[0040] like Figure 2 As shown, in Figure 2 The back side (or lower surface) of the first card edge 101A on the left side is provided with an escape groove 101C, wherein the escape groove 101C is preferably formed by recessing the lower surface of the first card edge 101A upward in the Z direction and is used to accommodate the locking pendulum 104 that can pivot relative to the first card edge 101A as described in detail below. The width of the escape groove 101C is preferably designed to match or be substantially the same as the width of the locking pendulum 104 (especially the hook 104A of the locking pendulum 104), and the height of the hook 104A of the locking pendulum 104 (i.e., the distance between the upper surface and the lower surface of the hook 104A) is also matched or substantially the same as the depth of the escape groove 101C (i.e., the distance between the entrance of the escape groove 101C and the lower surface of the first card edge 101A), so that the escape groove 101C can reliably accommodate the locking pendulum 104 pivoted to its escape position. This allows the hook 104A to rotate in or out of the avoidance groove 101C when the locking pendulum 104 rotates around its swing axis. As a preferred example, the width of the hook 104A of the locking pendulum 104 is the same as or slightly smaller than the width of the avoidance groove 101C, and the height of the hook 104A is the same as or slightly smaller than the depth of the avoidance groove 101C, so that when the locking pendulum 104 rotates into the avoidance groove 101C, the upper surface of the hook 104A is roughly flush with the lower surface of the first clamping edge 101A (for example, at Fig.12 and 13 Further, in Figure 3 The lower housing 103 of the door lock 100 and the internal components of the door lock 100 are removed to better show the first card edge 101A and the second card edge 101B. Figure 4The relative positional relationship between the first card edge 101A and the second card edge 101B and the left side wall 101E and the right side wall 101F is better shown in the form of a cross-sectional view. It is also shown that there is a predetermined height H between the lower surfaces of the first card edge 101A and the second card edge 101B and the upper shell 102. The predetermined height H is designed to be substantially the same as the thickness of the panel 200 to ensure that the door lock 100 will not have an unacceptable gap in appearance or the door lock 100 will not loosen and fall after being inserted into the panel 200.

[0041] exist Figure 5 and 7 The avoidance groove 101C at the lower surface of the first card edge 101A is better shown in the figure, wherein the avoidance groove 101C is centrally arranged on the lower surface of the first card edge 101A and is shown to be formed integrally with the first card edge 101A. As shown in the figure, the two side walls of the avoidance groove 101C are designed to be a pair of guide walls parallel to each other and extending along the height direction (Z direction) of the door lock 100, which can be used to guide the locking pendulum block 104 to rotate into or out of the avoidance groove 101C without deviation. Further, a pair of support holes 101D preferably provided with bearing members are provided at appropriate positions of the pair of guide walls to allow the locking pendulum block 104 to be pivotally supported and arranged below the avoidance groove 101C by means of a pair of pendulum shafts 104B. Further, in Figure 6 FIG. 1 shows the locking pendulum block 104 installed below the avoidance groove 101C. Due to the obstruction of the locking pendulum block 104 body, the pendulum shaft 104B and the corresponding support hole 101D are not visible. Figure 6 Also shown is a switch box 106 used as an electrical component of the door lock 100, and since its technical content is well known to those skilled in the art, it will not be described in detail here.

[0042] exist Fig. 8A Figures 104 to 101C show the locking pendulum 104 in this embodiment from different perspectives. Here, the locking pendulum 104 is preferably a single piece of injection molding. As shown in the figure, the locking pendulum 104 includes a pair of pendulum shafts 104B extending outward from both sides of the body and being inserted into the bearing member of the support hole 101D, thereby allowing the locking pendulum 104 to pivot under the avoidance groove 101C. A hook 104A is provided on the upper part of the locking pendulum 104, extending outward from the body on one side of the pendulum shaft 104B and being engageable with the panel 200, especially at Figure 8CAs shown, the inner contour of the hook 104A is designed to be substantially conformal to the cross section of the panel 200. Such a design allows the hook 104A to be locked at the edge of the mounting hole 201 of the panel 200 when the locking pendulum 104 is hung on the edge of the mounting hole 201 of the panel 200 due to the shape locking between the inner contour of the hook 104A and the panel 200, thereby allowing the locking pendulum 104 to remain relatively stationary relative to the panel 200, thereby allowing the upper housing 102 of the door lock 100 to rotate relative to the panel 200 as described in detail below, thereby allowing the second card edge 101B of the door lock hole body 101 to pivot through the mounting hole 201 on the panel 200. At the same time, the locking pendulum 104 is also provided with a receiving portion 104E for accommodating the leg of the reset spring 105 at the lower part on the other side of the pendulum shaft 104B (opposite to the hook 104A), thereby allowing the reset spring 105 to apply a reset force to the locking pendulum 104 to bias it toward the locking position. In addition, the locking pendulum 104 also includes an unlocking portion 104D located on the back side of the hook 104A and / or an operating portion 104C arranged below the hook 104A. As described in detail below, the unlocking portion 104D is configured to be accessible to the outside through the door hook hole body 101 for receiving a thrust from the outside, so as to pivot the locking pendulum 104 from the locking position to the avoidance position, and the operating portion 104C is configured to allow the locking pendulum 104 to be pivoted from the locking position to the avoidance position by lifting the operating portion 104C. Such a design allows an operator to install the door lock 100 to the panel 200 or remove the door lock 100 from the panel 200 in a convenient and simple manner.

[0043] exist Figure 6 and 7 Also shown is a return spring 105 fixedly disposed in the upper housing 102 and arranged near the locking pendulum 104. A chamber for accommodating the return spring 105 is provided in the upper housing 102, wherein a guide post is provided in the chamber for facilitating the insertion of the return spring 105, so that the return spring 105 is coiled around the guide post to ensure that the return spring 105 will not be offset in position during long-term use. The return spring 105 is preferably designed as a coil spring, wherein one leg of the coil spring is accommodated in the accommodation portion 104E of the locking pendulum 104, thereby allowing the return spring 105 to reliably apply a return force to the locking pendulum 104 to bias it toward the locking position. Of course, it should be pointed out that although it is shown here that the return spring 105 is used to provide a return force to the locking pendulum 104, it is also conceivable to use the elastic force of the locking pendulum 104 itself to achieve this.

[0044] Further, back to Figure 2, wherein the locking pendulum 104 of the door lock 100 is arranged below the first card edge 101A. During the process of installing the door lock 100 to the mounting panel 200, when the upper housing 102 pivots up and down in a substantially vertical direction (i.e., in the height direction of the door lock 100 body), the return spring 105 is elastically deformed or stretched. Specifically, when the upper shell 102 of the door lock 100 pivots relative to the panel 200 under the action of external force and rotates into the mounting hole 201 of the panel 200, the upper shell 102 moves relative to the locking pendulum block 104, causing the return spring 105 fixed in the upper shell 102 to undergo elastic deformation, so the return spring 104 accumulates energy to provide an elastic return force that subsequently biases the locking pendulum block 104 back to its locking position; when the external force is removed, the locking pendulum block 104 pivots downward under the action of the elastic return force to rotate the hook 104A out of the avoidance groove 101C, and the return spring 105 returns to its initial position.

[0045] The following combination Figures 9 to 14 The diagram describes the operation process of installing the door lock 100 into the mounting hole 201 of the panel 200.

[0046] Specifically, Figures 10 to 14 The process of installing the door lock 100 into the mounting hole 201 of the mounting panel 200 of the electrical equipment is shown in a side cross-sectional view. Fig.10 The preparation stage of installation is shown, at which the door lock 100 is positioned below (inside) the panel 200, but the door lock 100 has not yet interacted with the panel 200; Fig.11 The figure shows the situation when the locking pendulum block 104 of the door lock 100 is hung on the left edge of the mounting hole 201; Fig.12 The figure shows the process in which the second locking edge 101B of the door lock 100 pivots through the mounting hole 201 of the panel 200 when the upper housing 102 and the door hook hole body 101 of the door lock 100 rotate relative to the locking swing block 104 stuck on the left edge; Fig.13 Shown in Fig.12 The process is completed or, when the door hook hole body 101 moves to the right edge of the mounting hole 201, the relative position of the door lock 100 and the mounting hole 201 of the panel 200; Fig.14 The figure shows a state where the locking pendulum 104 is restored to its locking position so that the door lock 100 is securely inserted into the mounting hole 201 of the panel 200 .

[0047] In which, such as Fig. 9As shown, the upper shell 102 and the lower shell 103 are detachably connected together by a buckle structure. As an example, a buckle and / or a buckle hole are provided on the lower shell 103, and a corresponding buckle hole or buckle structure (not shown in the figure) is provided on the upper shell 102. When the lower shell 103 is inserted from the lower part of the upper shell 102, the corresponding buckle and the buckle hole cooperate with each other to connect the lower shell 103 to the lower part of the upper shell 102.

[0048] Furthermore, the shape of the mounting hole 201 on the panel 200 is designed to be conformable to the shape of the door lock hole body 101 of the door lock 100. Figure 3 As shown, the distance between the outer side wall of the locking pendulum block 104 (i.e., the left surface of the hook 104A of the locking pendulum block 104) and the right side wall 101F of the door hook hole body 101 is W. Here, the length L of the mounting hole 201 is designed to be the same as the distance W (or the length of the mounting hole 201 is slightly greater than the above distance W). Thus, the door hook hole body 101 and the locking pendulum 104 work together so that after the door hook hole body 101 and the locking pendulum 104 are inserted into the mounting hole 201, the outer side wall of the hook 104A and the right side wall 101F of the door hook hole body 101 respectively abut against the left and right edges of the mounting hole 201, so that the first card edge 101A and the second card edge 101B on the door hook hole body 101 cannot withdraw from the mounting hole 201, the door lock 100 cannot move left and right on the panel 200, and the door lock 100 cannot move up and down relative to the panel 200 due to the contact between the lower surface of the second card edge 101B and the upper surface of the panel 200, thereby fixing the door lock 100 on the panel 200 (see Fig.14 ). Next, the installation process of the door lock 100 is described in detail:

[0049] like Fig.10 As shown, before starting the installation, the operator first aligns the door hook hole body 101 roughly with the mounting hole 201 on the mounting panel 200 , and then tilts the door lock 100 at a certain angle below the mounting hole 201 of the panel 200 .

[0050] like Fig.11As shown, next, the operator extends the first card edge 101A on the left side of the door hook hole body 101 through the mounting hole 201, and hangs the hook 104A of the locking pendulum block 104 on the left edge of the mounting hole 201, and the hook 104A of the locking pendulum block 104 can now rest against the upper surface of the left edge of the mounting hole 201. However, the upper shell 102 and the locking pendulum block 104 are not subjected to external forces, so the locking pendulum block 104 is kept in the locking position under the action of the reset spring 105 (at this time, the hook 104A has not been rotated into the avoidance groove 101C, and there is a distance between the hook 104A and the bottom of the avoidance groove 101C). At this time, when the door lock 100 is tilted at a certain angle, the contact surfaces of the upper shell 102 located on both sides of the door hook hole body 101 along the length direction (Y direction) are in contact with the lower surfaces of the panel 200 on both sides of the mounting hole 201 in the width direction.

[0051] At this time, the length acting on the mounting hole 201 on the panel 200 is the projection length P of the distance between the left side surface of the hook 104A and the second edge 101B of the door hook hole body 101 on the panel 200. At this time, the projection length P is designed to be sufficiently smaller than the length L of the mounting hole 201, so that the second edge 101B on the door hook hole body 101 can be pivoted into or out of the mounting hole 201 next.

[0052] When the operator locks the door 100 Fig.11 When the right part applies an upward force, the inner contour of the hook 104A is designed to be substantially conformal to the cross section of the panel 200. Due to the shape locking between the inner contour of the hook 104A and the panel 200, the hook 104A is locked at the edge of the mounting hole 201 of the panel 200. At this time, the upper shell 102 of the door lock 100 rotates relative to the panel 200 under the action of the force, so that the second edge 101B of the door lock hole body 101 can pivot counterclockwise through the mounting hole 201 on the panel 200. It should be noted that the force applied to the door lock 100 does not need to be limited to a specific force application location, and the applied force may not be vertically upward, as long as the force has an upward component force, so that the force can still be applied very conveniently in a narrow space.

[0053] like Fig.12As shown, when the upper shell 102 of the door lock 100 rotates counterclockwise, the second card edge 101B on the right side of the door hook hole body 101 moves upward to pass through the right edge of the mounting hole 201 until the upper surface of the upper shell 102 is in full contact with the lower surface of the panel 200. At the same time, the first card edge 101A of the door hook hole body 101 rotates counterclockwise so that the avoidance groove 101C therein is close to the upper surface of the hook 104A of the locking pendulum block 104, so that the hook 104A of the locking pendulum block 104 is rotated into the avoidance groove 101C. In this process, since the reset spring 105 is fixedly arranged in the upper shell 102, it undergoes elastic deformation to accumulate a certain amount of elastic potential energy. Due to the elastic reset force of the reset spring 105, the locking pendulum block 104 has a tendency to rotate counterclockwise to rotate out of the avoidance groove 101C.

[0054] like Fig.13 and 14 As shown in FIG. 1 , when the operator applies a rightward push to the left side of the door lock 100, the door lock 100 moves from Fig.12 Move to the position Fig.13 and 14 location.

[0055] like Fig.13 and 14 As shown, when the operator moves the door lock 100 to the right, the right side wall 101F of the door hook hole body 101 will gradually abut against the right edge of the mounting hole 201, so that the second card edge 101B located on the right side is engaged with the right edge 904. In this process, the upper surface of the upper shell 102 is still kept in contact with the lower surface of the panel 200. When the door lock 100 moves to the right to the end position, the lower surface of the hook 104A of the locking pendulum block 104 will gradually slide away from the left edge of the mounting hole 201 of the panel 200 until it no longer presses the panel 200, that is, it is no longer subjected to the force of the panel 200. At this time, the elastic reset force of the reset spring 105 drives the locking pendulum block 104 to rotate counterclockwise so as to rotate out of the avoidance groove 101C, and a snapping sound is emitted at the same time, so that the operator knows that the installation is in place.

[0056] When the installation is completed, the distance W between the outer wall of the locking pendulum block 104 (i.e., the left surface of the hook 104A of the locking pendulum block 104) and the right side wall 101F of the door hook hole body 101 is exactly the length L of the mounting hole 201 (or slightly less than the length of the mounting hole 201), so that the door lock 100 cannot move in the length direction of the mounting hole 201. The width of the door hook hole body 101 on both sides along the Y direction is the same as the width of the mounting hole 201, so the door lock 100 cannot move in the width direction of the mounting hole 201. Moreover, the first card edge 101A and the second card edge 101B of the door hook hole body 101 are located above the mounting hole 201, and the distance between their outer walls is greater than the length of the mounting hole 201 and the predetermined height is equal to the thickness of the panel 200, so that the door lock 100 cannot escape from the mounting hole 201. Therefore, the door lock 100 cannot move in the left and right, front and back, and up and down directions of the mounting hole 201, that is, it is fastened in the mounting hole 201.

[0057] As can be seen from the above, the door lock 100 of the electrical equipment according to the present invention can make the operator's installation of the door lock 100 simpler and easier to achieve, and is more suitable for installing the door lock in a small space. Particularly advantageously, the locking pendulum block 104 of the door lock 100 does not need to be pre-made in an integrated manner with the upper shell 102 or the lower shell 103, which significantly reduces the difficulty and cost of making the door lock 100. Further, since the locking pendulum block 104 and the return spring 105 can be easily replaced and adjusted, the dimensional accuracy requirements of the locking pendulum block 104 and the return spring 105 are low, which is beneficial for production and assembly, and even when the locking pendulum block 104 and the return spring 105 are worn or fail, only the locking pendulum block 104 and the return spring 105 need to be replaced without discarding the entire door lock 100.

[0058] Next, in Figures 15 to 18 FIG. 2 shows the operation process of removing the door lock 100 of the present invention from the panel 200:

[0059] like Fig.15 As shown, the operator first opens the door of the electrical equipment to expose the opening of the door hook hole body 101, and then obliquely inserts the thin rod-shaped tool rod 300 (such as a screwdriver) into the door lock 100 through the opening of the door hook hole body 101. By designing the opening size of the door hook hole body 101 or the thickness of the tool rod 300, it is preferred that the tool rod 300 is obliquely inserted into the door lock 100 at an angle of about 45 degrees until it abuts against the unlocking portion 104D of the locking pendulum 104 located on the back side of the hook 104A.

[0060] like Fig.16As shown, the operator then applies a force to the left along the drawing direction to the unlocking portion 104D of the locking pendulum block 104 via the tool rod 300, thereby applying a clockwise torque to the locking pendulum block 104. As a result, this overcomes the effect of the restoring force of the restoring spring 105 and pivots the locking pendulum block 104 from its locking position to the avoidance position where the hook 104A is turned into the avoidance groove 101C. At this time, the hook 104A of the locking pendulum block 104 will no longer abut against the left edge of the mounting hole 201, thereby allowing the operator to push the door lock 100 to the left along the left-right direction of the drawing.

[0061] like Fig.17 As shown, the operator then pushes the door lock 100 to the left side of the drawing while keeping the tool rod 300 in contact with the unlocking portion 104D until the second edge 101B of the door hook hole body 101 is separated from the right side edge of the mounting hole 201 .

[0062] like Fig.18 As shown, the operator then rotates the door lock 100 clockwise, and since the second edge 101B of the door hook hole body 101 has been separated from the right edge of the mounting hole 201, the door lock 100 can be freely rotated in and out of the mounting hole 201. The door lock 100 is kept tilted until it is completely removed from the mounting hole 201 of the panel 200.

[0063] Of course, those skilled in the art can also understand that the tool rod 300 is not necessary. When removing the door lock 100 from the mounting hole 201 on the panel 200, the operator can also lift the operating part 104C of the locking pendulum block 104, so that the locking pendulum block 104 can also overcome the reset force of the reset spring 105 and move clockwise, driving the hook 104A to move into the avoidance position of the avoidance groove 101C. At this time, the hook 104A of the locking pendulum block 104 will no longer abut against the left edge of the mounting hole 201, thereby leaving a certain space at the left edge of the mounting hole 201 of the panel 200, so that the door lock 100 can move to the left, and finally the door lock 100 can be tilted for removal in the same manner as described above.

[0064] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the various embodiments may also be combined to form other implementation methods that can be understood by those skilled in the art.

[0065] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Without departing from the concept and principle of the present invention, equivalent changes, modifications and combinations that can be made by those skilled in the art should all fall within the scope of protection of the present invention.

Claims

1. A door lock (100) for an electrical device, which can be inserted into a mounting hole (201) on a panel of the electrical device, characterized in that: include: Upper housing (102); A door hook hole body (101) is arranged on the upper shell (102), and the door hook hole body (101) comprises: top; A first pair of side walls (101E, 101F) and a second pair of side walls are oppositely arranged and extend downward from the bottom of the top; A first card edge (101A) and a second card edge (101B) extending outward from the top of the door hook hole body (101) and from the first pair of side walls respectively, wherein the lower surface of the first card edge is recessed upward to form an avoidance groove (101C); a return spring (105) fixedly disposed in the upper housing (102); as well as A locking pendulum (104), wherein the locking pendulum (104) is pivotally mounted in the upper housing (102), is located below the avoidance groove (101C), and is configured to pivot between an avoidance position for entering the avoidance groove (101C) and a locking position for exiting the avoidance groove (101C), wherein the locking pendulum (104) allows the second clamping edge (101B) of the door hook hole body (101) to pivot through the mounting hole (201) on the panel (200) in the avoidance position and then returns to the locking position to clamp the door lock into the mounting hole on the panel; The locking pendulum block (104) comprises: A swing shaft (104B) is pivotally mounted in the upper housing (102), thereby allowing the locking swing block to pivot below the avoidance groove; A hook (104A) located on one side of the swing shaft and capable of engaging with the panel; a receiving portion (104E) located on the other side of the swing shaft and accommodating the leg of the return spring; The return spring applies a return force to the locking pendulum (104) to bias it toward the locking position; A chamber for accommodating a return spring (105) is provided in the upper shell (102), a guide column for guiding the return spring (105) to be inserted is provided in the chamber, and the return spring (105) is coiled around the guide column.

2. The door lock according to claim 1, characterized in that: The locking pendulum block also includes an unlocking portion (104D) located on the back side of the hook, wherein the unlocking portion (104D) is configured to be accessible from the outside through the door hook hole body (101) for receiving a thrust from the outside, thereby pivoting the locking pendulum block (104) from a locking position to an avoidance position.

3. The door lock according to claim 1, characterized in that: The locking pendulum block (104) further comprises an operating portion (104C) arranged below the hook, which is configured to allow the locking pendulum block to be pivoted from a locking position to an evasive position by lifting the operating portion.

4. The door lock according to claim 1, characterized in that: The inner contour of the hook (104A) is designed so that when the locking pendulum block is hung on the edge of the mounting hole (201), the hook can be locked at the edge of the mounting hole, thereby allowing the second edge (101B) of the door hook hole body (101) to pivot through the mounting hole (201) on the panel (200).

5. The door lock according to claim 1, characterized in that: There is a predetermined height (H) between the lower surfaces of the first card edge (101A) and the second card edge (101B) and the upper shell (102), and the predetermined height is substantially the same as the thickness of the panel.

6. The door lock according to claim 1, characterized in that: The width of the avoidance groove (101C) is substantially the same as the width of the hook (104A) of the locking pendulum block.

7. An electrical device, comprising a panel (200), wherein the panel is provided with a mounting hole (201), characterized in that: The electrical device comprises: a door lock (100) according to any one of claims 1 to 6, wherein the door hook hole body (101) of the door lock (100) is installed in the installation hole.

8. The electrical device according to claim 7, characterized in that: The electrical appliance is a washing machine.

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