Door lock assembly and electrical equipment

Abstract

The invention relates to a door lock assembly for locking electrical equipment. The door lock assembly comprises a shell, a bias spring, a rotating wheel seat, a pin shaft and a rotating wheel, wherein the pin shaft and the rotating wheel are fixedly arranged on the shell; one end of the bias spring abuts against the spring abutting surface of the shell. The rotating wheel seat is movably contained in the shell, a barrel-shaped containing cavity is formed in the rotating wheel seat and used for containing the bias spring, the barrel-shaped containing cavity is provided with a containing cavity bottom surface, and the other end of the bias spring abuts against the containing cavity bottom surface; the rotating wheel is provided with a rotating shaft which is rotatably mounted on the rotating wheel seat, so that the rotating wheel can rotate in the rotating wheel seat; the cam structure of the rotating wheel can abut against the pin shaft, so that when the rotating wheel rotates in the rotating wheel base, the rotating wheel and the rotating wheel base can move in the shell, and in the process that the rotating wheel base moves in the shell, the bias spring is compressed in the barrel-shaped containing cavity. The bias spring is contained in the barrel-shaped containing cavity to be compressed, so that movement of the rotating wheel base is more stable, and the overall hand feeling of door opening and closing actions is smoother.

Description

Technical Field

[0001] The present application relates to a door lock assembly and an electrical device, and in particular to a door lock assembly used for electrical devices and capable of withstanding a certain internal thrust, and the electrical device using the door lock assembly. Background Art

[0002] In some commercial or household electrical appliances, a door lock mechanism can be used to lock or open the door of the electrical appliance (such as a dryer, a washing machine, a dishwasher, etc.). A bias spring is usually provided inside the existing door lock mechanism. When the door opening displacement does not reach the critical value of the door opening displacement, the door lock mechanism can return the door to a closed state under the action of the bias spring after the door opening force is removed. The above-mentioned door lock mechanism also needs to have a safety mechanism to protect children. For example, for a door lock mechanism of a dryer with a door located on the side, when a child mistakenly enters the dryer, the closed door should be pushed open from the inside of the door with a relatively small force, so that the child can easily come out of the drum of the dryer. In addition, this door lock mechanism needs to prevent the clothes inside from accidentally pushing the door open when the dryer is working. Summary of the invention

[0003] The door lock mechanism is usually provided with a rotating wheel having a lock hook, which can cooperate with a door hook provided on the door to lock the door. The rotating wheel can rotate around the rotating wheel shaft, so that the lock hook of the rotating wheel and the door hook are locked or unlocked with each other.

[0004] On the one hand, if the bias spring acts directly on the wheel shaft of the rotary wheel, the rotary wheel and its rotary shaft can compress the bias spring while moving linearly inside the door lock mechanism, thereby generating a bias force that causes the rotary wheel to move in the opposite direction. However, the bias spring may deviate from the compression direction (movement direction of the rotary shaft) and produce elastic deformation during compression or rebound by the rotary shaft, such as bending deformation outside the compression direction, so that the bias spring will produce a bias force on the rotary shaft outside the compression direction, such as a force tangential to the compression direction, so that the rotation of the rotary shaft is subject to additional interference force, so that the up and down movement of the rotary wheel will be stuck, unstable or not smooth, which is reflected in the door opening operation, that is, the overall feel of the door opening and closing action is not smooth.

[0005] On the other hand, in the door lock mechanism provided with a safety mechanism for protecting children, the force required to push the door open from inside the dryer cannot be too high, for example, less than 67 Newtons. However, too low a force to open the door will cause the door to be accidentally pushed open by the rotating clothes during the drying process. It is necessary to consider both of the above situations at the same time, so that the door is not easily pushed open by the centrifugally rotating clothes, and it is convenient for children to push the door open from inside the dryer with a small force.

[0006] In order to meet the above requirements for the door lock mechanism, the present application provides a door lock assembly, in which a rotary wheel seat is provided inside the door lock housing, and a rotary wheel can be mounted on the rotary wheel seat for rotation. The rotary wheel seat is provided with at least one barrel-shaped cavity, and the size of the cavity is just enough to accommodate a bias spring, so that the bias spring can be accommodated in the barrel-shaped cavity and compressed or rebounded. The cavity wall of the barrel-shaped cavity can limit the bending of the bias spring from the compression direction, so that the bias spring can generate a rebound force proportional to the compression displacement during the compression process, and the rebound force acts on the bottom of the barrel-shaped cavity of the rotary wheel seat, and can apply a bias force to the linear movement of the rotary wheel seat and the rotary wheel inside the door lock housing. Since the bias spring generates a stable bias force, the rotary wheel seat and the rotary wheel move smoothly inside the housing, so that the overall feel of the door opening and closing action is smooth, and there will be no jamming, instability or unevenness.

[0007] On the other hand, the present application has a pin fixedly arranged inside the door lock housing. Through the biasing force of the biasing spring, the pin can always maintain an abutting state with the rotating wheel. During the rotation of the rotating wheel, the pin can apply a variable force to the rotating wheel. In the present application, the cam part on the rotating wheel is provided with two slopes with different curvatures, and the rotating wheel can abut against the pin through one of the two slopes with different curvatures. When the rotating wheel starts to rotate from the door closing position, the force applied by the pin to the rotating wheel causes the required door opening internal thrust to increase rapidly to a size close to the maximum door opening force. In the subsequent rotation, the door opening force remains stable and increases slowly until it reaches the door opening critical position. When the rotating wheel rotates past the door opening critical position, even if the door opening internal thrust is removed, the rotating wheel will automatically rotate to the corresponding door opening position under the joint action of the biasing spring and the pin. If the door opening force disappears before the rotating wheel rotates to the door opening critical position, the rotating wheel will return to the corresponding door closing position under the biasing force of the biasing spring.

[0008] The advantage of the above-mentioned setting of the rotary cam part is that it takes into account the characteristics of the force exerted on the door by the clothes when they rotate centrifugally inside the dryer, that is, the force is generated by the accumulated clothes hitting the door under the action of centrifugal force. When the clothes are displaced in the centrifugal direction, the accumulated clothes will loosen and the force hitting the door will disappear immediately. That is, the force exerted by the clothes on the door will dissipate before the rotary wheel rotates to the critical position for opening the door, and even if the door is slightly displaced, it will not push the door open. However, a child who mistakenly enters the dryer can exert a continuous internal thrust on the door, which can cause the rotary wheel to rotate beyond the corresponding critical position for opening the door, and thus push the door open.

[0009] Therefore, the technical solution of the door lock assembly of this application is as follows:

[0010] According to a first aspect of the present application, a door lock assembly is provided, which is used to lock the door of an electrical device, and is characterized in that it includes a shell, at least one bias spring, a rotary wheel seat, a pin shaft and a rotary wheel, wherein the shell has a spring abutment surface; one end of the at least one bias spring abuts on the spring abutment surface; the rotary wheel seat is movably accommodated inside the shell, wherein at least one side of the rotary wheel seat is provided with a barrel-shaped cavity, the barrel-shaped cavity is used to accommodate the at least one bias spring, and the barrel-shaped cavity has a cavity bottom surface, so that the other end of the at least one bias spring abuts on the cavity bottom surface; the The pin shaft is fixedly mounted on the shell; and the rotating wheel has a rotating shaft, which is rotatably mounted on the rotating wheel seat so that the rotating wheel can rotate in the rotating wheel seat in the door opening direction or the door closing direction; wherein the rotating wheel also has a cam structure, and the cam structure is configured to abut against the pin shaft, so that when the rotating wheel rotates in the door opening direction or the door closing direction in the rotating wheel seat, the rotating wheel together with the rotating wheel seat can move inside the shell, and during the movement of the rotating wheel seat inside the shell, the at least one bias spring can be compressed or rebounded in the barrel-shaped cavity.

[0011] According to a first aspect of the present application, it is characterized in that the at least one bias spring is two bias springs.

[0012] According to the first aspect of the present application, it is characterized in that: a barrel-shaped cavity is provided on each side of the wheel seat, and the barrel-shaped cavities on both sides of the wheel seat are respectively used to accommodate one of the two bias springs, so that the two bias springs are respectively abutted between the spring abutting surface and the cavity bottom surface of the barrel-shaped cavity, so that the two bias springs can be compressed or rebound during the movement of the wheel seat inside the shell.

[0013] According to the first aspect of the present application, it is characterized in that: a door hook hole is provided on the surface of the shell, and the door hook hole is used to receive a door hook installed on the door; wherein, inserting or pulling out the door hook into or out of the door hook hole will cause the rotating wheel to rotate around the rotating shaft in the door closing direction or the door opening direction.

[0014] According to the first aspect of the present application, it is characterized in that: the rotating wheel includes a rotating wheel head, a rotating wheel middle part and a rotating wheel tail part, the rotating wheel middle part is provided with the rotating shaft, the rotating wheel head is provided with a locking hook, the locking hook is configured to engage with the door hook, the door hook is inserted into or pulled out of the door hook hole, which will cause the rotating wheel to rotate around the rotating shaft toward the door closing direction or the door opening direction; wherein, the rotating wheel has a rotating wheel opening position and a rotating wheel closing position during the rotation process.

[0015] According to the first aspect of the present application, it is characterized in that: the cam structure is provided at the tail of the rotating wheel, the cam structure is provided with an inner side surface and an outer side surface, the inner side surface has an inner side stabilizing point, and the outer side surface has a cam outer side stabilizing point; and wherein, when the rotating wheel is in the rotating wheel closing position, the pin shaft is located at the cam inner side stabilizing point, and when the rotating wheel is in the rotating wheel opening position, the pin shaft is located at the cam outer side stabilizing point.

[0016] According to the first aspect of the present application, it is characterized in that: a wheel stop portion is provided on the wheel seat, and the wheel stop portion is configured to limit the rotation range of the wheel so that when the wheel rotates from the wheel closing position to the wheel opening position, the wheel can be stabilized in a position where the pin shaft is located at a stable point outside the cam.

[0017] According to the first aspect of the present application, it is characterized in that: the spring abutment surface is arranged opposite to the bottom surface of the cavity; wherein, when the rotary wheel rotates from the rotary wheel closing position to the rotary wheel opening position, the cam structure of the rotary wheel and the pin shaft produce relative movement, so that the abutment position of the cam structure and the pin shaft moves from the inner stable point to the outer stable point of the cam, and the rotary wheel seat moves close to the spring abutment surface of the shell, so that the pair of bias springs are compressed; wherein, when the rotary wheel rotates from the rotary wheel opening position to the rotary wheel closing position, the cam structure of the rotary wheel and the pin shaft produce relative movement, so that the abutment position of the cam structure and the pin shaft moves from the outer stable point of the cam to the inner stable point, and the rotary wheel seat moves away from the spring abutment surface of the shell, so that the pair of bias springs rebound from the compressed state.

[0018] According to the first aspect of the present application, it is characterized in that: a wheel receiving portion is provided on the wheel seat, and the wheel receiving portion is used to install the rotating shaft of the wheel, so that the wheel can be installed on the wheel seat and rotate.

[0019] According to the first aspect of the present application, it is characterized in that: a pin shaft mounting portion is provided on the shell, the pin shaft mounting portion has a pin shaft mounting hole, and the pin shaft mounting hole is used to fix and install the pin shaft.

[0020] According to the first aspect of the present application, it is characterized in that it also includes: a micro switch assembly, which is configured such that: when the rotary wheel rotates from the rotary wheel closing position to the rotary wheel opening position, the micro switch assembly disconnects the contact, and when the rotary wheel rotates from the rotary wheel opening position to the rotary wheel closing position, the micro switch assembly is triggered.

[0021] According to the first aspect of the present application, it is characterized in that: a micro switch assembly actuating portion is also provided on the rotating wheel seat, and the micro switch assembly actuating portion is configured such that: when the rotating wheel seat moves close to the spring abutting surface, the micro switch assembly actuating portion disconnects from the micro switch assembly, thereby making the micro switch assembly not triggered; and when the rotating wheel seat moves away from the spring abutting surface, the micro switch assembly actuating portion contacts with the micro switch assembly, thereby triggering the micro switch assembly.

[0022] According to a second aspect of the present application, an electrical device is provided, characterized by comprising a door lock assembly as described in the first aspect of the present application.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A It is a three-dimensional view of the door lock assembly of the present application, wherein the door hook is in an uninserted state.

[0025] Figure 1B for Figure 1A The door lock assembly is shown in a perspective view with the housing hidden to show more components inside the housing.

[0026] Figure 1C for Figure 1B The door lock assembly is shown in the state after the door hook is inserted.

[0027] Figure 1D for Figure 1A The bottom perspective of the door lock assembly is shown to illustrate the assembly relationship between the pin and the housing and the matching relationship between the pin and the rotating wheel.

[0028] Figure 1E for Figure 1D The cross-sectional view of the door lock assembly in the MM direction is shown to illustrate the assembly relationship between the spring, the housing and the rotary wheel seat.

[0029] Figure 1F for Figure 1B The side view of the door lock assembly is shown to illustrate the matching relationship between the micro switch assembly actuating portion of the rotary seat and the micro switch assembly, wherein the micro switch assembly is in an untriggered state.

[0030] Figure 1G for Figure 1C The side view of the door lock assembly is shown to illustrate the matching relationship between the micro switch assembly actuating portion of the rotary seat and the micro switch assembly, wherein the micro switch assembly is in a triggered state.

[0031] Figure 2An exploded view of the door lock assembly of the present application.

[0032] Figure 3A It is the front view of the rotating wheel, and shows the relative position relationship between the rotating wheel and the pin shaft in different movement stages.

[0033] Figure 3B It is a curve relationship diagram of the upward displacement of the wheel seat (door opening displacement) and the internal thrust exerted on the door.

[0034] Figure 4A This is an internal side view of the door lock assembly of the present application, wherein the door hook is in the maximum insertion state, and the pin abuts against point O of the force-bearing surface of the rotating wheel.

[0035] Figure 4B for Figure 4A The enlarged view of the runner and the force analysis diagram N are shown.

[0036] Figure 5 It is a schematic diagram of the door hook pulling the rotating wheel upward, in which the pin abuts against point A of the force-bearing surface of the rotating wheel.

[0037] Figure 6 It is a schematic diagram of the door hook pulling the rotating wheel upward, wherein the pin abuts against the AB section of the rotating wheel's force-bearing surface.

[0038] Figure 7 It is a schematic diagram of the door hook pulling the rotating wheel upward, in which the pin abuts against point B of the force-bearing surface of the rotating wheel.

[0039] Fig. 8A It is a schematic diagram of the contact between the pin and the BC section of the wheel force surface.

[0040] Figure 8B for Fig. 8A The enlarged view of the runner and the force analysis diagram Q are shown.

[0041] Figure 8C This is a schematic diagram of the pin and the force-bearing surface of the runner abutting at point C.

[0042] Fig. 9 It is a schematic diagram of a dryer with a door lock assembly of the present application in a door open position. DETAILED DESCRIPTION

[0043] Various specific embodiments of the present application will be described below with reference to the accompanying drawings that form a part of the present application, but the present application is not limited thereby. It should be understood that although terms indicating directions, such as "upper", "lower", "left", "right", "front" and "rear", etc. are used in the present application to describe the orientation of various example structural parts and elements of the present application, these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the accompanying drawings. Since the embodiments of the present application can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations.

[0044] The term "include" and its derivatives are intended to include but not limit. Unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two components, it can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. Where possible, the same or similar reference numerals used in this application refer to the same components.

[0045] Figures 1A-1G Schematic diagram of the door lock assembly 100 of the present application observed from various angles. Figure 1B Hidden Figure 1A The housing 102 in the figure is shown to show more components inside the housing 102. Figure 1C for Figure 1B The door lock assembly 100 is shown in a state after the door hook 101 is inserted. Figure 1D for Figure 1A The bottom perspective view of the door lock assembly 100 is shown to illustrate the assembly relationship between the pin 112 and the housing 102 and the matching relationship between the pin 112 and the rotating wheel 108. Figure 1E for Figure 1D The door lock assembly 100 is shown in a cross-sectional view along the MM direction to illustrate the assembly relationship between the springs 110 , 111 and the housing 102 and the rotary wheel seat 104 . Figure 1F and 1G for Figure 1B The door lock assembly 100 is shown in a side view to illustrate the mating relationship between the micro switch assembly actuating portion 172 of the rotary seat 104 and the micro switch assembly 114 .

[0046] It is worth noting that, for the convenience of description and observation, Figure 1AAs a reference, the direction from the front to the rear of the housing 102 is defined as the positive direction of X, the direction from the right to the left of the housing 102 is defined as the positive direction of Y, and the direction in which the door hook 101 is pulled out of the housing 102 is defined as the positive direction of Z (the direction from the bottom to the top of the housing 102). Since the embodiments of the present application can be arranged in different directions, the terms X, Y and Z indicating directions are only for illustration and should not be regarded as limiting.

[0047] like Figure 1A As shown in FIG. 1 , the door lock assembly 100 includes a housing 102 and a rotating wheel seat 104 disposed inside the housing 102. A door hook hole 182 is provided on the upper surface of the housing 102 for receiving a door hook 101 installed on the door of the electrical device. The door hook 101 is located above the door hook hole 182. When the door hook 101 is inserted into the door lock assembly 100 from the door hook hole 182 on the housing 102, the door hook 101 can be engaged with the rotating wheel inside the door lock assembly 100 (see FIG. 1 ). Figure 1B-1C When the rotating wheel 108 is locked, the door of the electrical device is also locked.

[0048] The door hook 101 includes a door hook base 122, a door hook hole 124 and a door hook head 126. The door hook base 122 is installed on the door of the electrical equipment, and the door hook head 126 has a door hook head upper side surface 128. When the door hook 101 is inserted into the door lock assembly 100, the door hook head 126 can push the rotating wheel 108 to rotate; when the door hook 101 is pulled out from the door lock assembly 100, the door hook head upper side surface 128 can pull the rotating wheel 108 to rotate in the opposite direction; when the door is in a closed state, a part of the door hook 101 remains in the door lock assembly 100, and the door hook hole 124 is hung by the rotating wheel 108, so that the door hook 101 is locked and cannot move.

[0049] Continue as Figure 1A As shown, the housing 102 is provided with a housing limiting hole 103 arranged along the Z direction, and the outer wall of the wheel seat 104 is provided with a wheel seat limiting protrusion 106. The wheel seat limiting protrusion 106 can extend outward from the inner side of the housing limiting hole 103, and can reciprocate in the Z direction in the groove defined by the housing limiting hole 103, so that the wheel seat 104 can be limited to reciprocate in the Z direction inside the housing 102.

[0050] Figure 1B-1C The schematic diagram further shows the door hook 101 in the uninserted state and the inserted state.

[0051] like Figure 1B-1CAs shown, the door lock assembly 100 further includes a rotating wheel 108, which is rotatably mounted on the rotating wheel seat 104 so that the rotating wheel 108 can rotate in the rotating wheel seat 104 in the door opening direction or the door closing direction. Specifically, the rotating wheel seat 104 is provided with rotating wheel receiving portions 152, 153 for mounting a rotating shaft 208 (see Figure 2 ) so that the rotating wheel 108 can be fixed on the rotating wheel seat 104 and rotate.

[0052] Continue to refer to Figure 1B-1C The door lock assembly 100 further includes two bias springs 110, 111. A barrel-shaped cavity 132, 134 is respectively provided on the left and right sides of the rotary wheel seat 104 along the Y direction, and each of the barrel-shaped cavities 132, 134 is used to accommodate a bias spring 110, 111. The inner diameter of the barrel-shaped cavity 132, 134 is slightly larger than the outer diameter of the bias spring 110, 111, so that the bias spring will not be bent and deformed away from the compression direction when being compressed in the barrel-shaped cavity. One end of each bias spring abuts against the bottom of the barrel-shaped cavity 132, 134, and the other end abuts against the inner side of the shell 102. If the shell 102 is fixed, when the wheel seat 104 moves closer to the shell 102 along the Z direction, the bias springs 110, 111 are compressed, so that the bias springs 110, 111 can apply a bias force to the wheel seat 104 in the opposite direction of the movement of the wheel seat 104, so that the wheel seat 104 has a tendency to move away from the shell 102.

[0053] For those skilled in the art, the rotary wheel seat 104 may be provided with only one barrel-shaped cavity, and the corresponding door lock assembly 100 may include only one bias spring, or the rotary wheel seat 104 may be provided with more than two barrel-shaped cavities, each of which is used to accommodate a bias spring, as long as the rotary wheel seat 104 is biased by the bias spring when it moves along the Z direction close to the housing 102. Specifically, during the door opening process, the rotary wheel seat 104 moves close to the housing 102, and the bias spring is compressed; during the door closing process, the rotary wheel seat 104 moves away from the housing 102, and the bias spring gradually rebounds from the compressed state to the initial state.

[0054] Continue to refer to Figure 1B-1C The door lock assembly 100 further includes a micro switch assembly 114, which is arranged in the Z direction near the rotary wheel seat 104. The micro switch assembly 114 is configured such that: when the rotary wheel 108 rotates from the rotary wheel door closing position to the rotary wheel door opening position, the micro switch assembly 114 is disconnected from the rotary wheel seat 104, and when the rotary wheel 108 rotates from the rotary wheel door opening position to the rotary wheel door closing position, the micro switch assembly 114 can be triggered by the rotary wheel seat 104. The rotary wheel door closing position corresponds to the door closing position, and the rotary wheel door opening position corresponds to the door opening position.

[0055] Figure 1D for Figure 1A The door lock assembly 100 is shown in a three-dimensional view from the bottom to illustrate the assembly relationship between the pin 112 and the housing 102 and the matching relationship between the pin 112 and the rotating wheel 108 .

[0056] like Figure 1D As shown, the door lock assembly 100 also includes a pin 112, and the housing 102 is further provided with two left and right pin mounting portions 144, 146, each of which has a corresponding pin mounting hole 145, 147 for fixing the pin 112. The housing 102 has a micro switch assembly accommodating portion 142 for accommodating the micro switch assembly 114.

[0057] Figure 1E for Figure 1D The door lock assembly 100 is shown in a cross-sectional view along the MM direction to illustrate the assembly relationship between the springs 110 , 111 and the housing 102 and the rotary wheel seat 104 .

[0058] like Figure 1E As shown, the barrel-shaped cavities 132, 134 of the wheel seat 104 have cavity bottom surfaces 133, 135, so that one end of the bias spring 110, 111 accommodated in the barrel-shaped cavities 132, 134 can abut against the cavity bottom surfaces 133, 135. The inner side of the housing 102 is also correspondingly provided with spring abutment surfaces 162, 164, so that the other end of the bias spring 110, 111 can abut against the spring abutment surfaces 162, 164. Therefore, the bias spring 110, 111 is compressed by being confined between the cavity bottom surfaces 133, 135 of the wheel seat 104 and the spring abutment surfaces 162, 164 of the housing 102 which are arranged opposite to each other. The cavity wall of the barrel-shaped cavity 132, 134 can limit the bending deformation of the bias spring 110, 111 deviating from the compression direction, so that the bias spring 110, 111 can generate a rebound force proportional to the compression displacement during the compression process, and the rebound force acts on the spring abutment surfaces 162, 164 of the barrel-shaped cavity 132, 134, which can generate a bias force on the rotating wheel seat 104 and the rotating wheel 108. Because the bias spring generates a stable bias force, the process of the rotating wheel seat 104 and the rotating wheel 108 moving inside the housing 102 is more stable than the rotating wheel in the prior art, so that the overall feel of the door opening and closing action is smoother.

[0059] Figure 1F and 1G for Figure 1B The door lock assembly 100 is shown in a side view to illustrate the mating relationship between the micro switch assembly actuating portion 172 of the rotary seat 104 and the micro switch assembly 114 .

[0060] like Figure 1F and1G As shown, a micro switch assembly actuating portion 172 is also provided on the rear side of the rotating wheel seat 104, and the micro switch assembly actuating portion 172 has a micro switch assembly actuating inclined surface 174. The micro switch assembly 114 has a button 116, and the micro switch assembly 114 is triggered when the button 116 is pressed, and is not triggered when the button 116 is not pressed. The micro switch assembly actuating portion 172 is configured such that: when the rotating wheel seat 104 moves close to the spring abutment surfaces 162, 164 of the housing 102, the micro switch assembly actuating inclined surface 174 does not press the button 116, so that the micro switch assembly 114 is not triggered; when the rotating wheel seat 104 moves away from the spring abutment surfaces 162, 164 of the housing 102, the micro switch assembly actuating inclined surface 174 presses the button 116, thereby triggering the micro switch assembly 114.

[0061] Figure 2 It is an exploded view of the door lock assembly 100 of the present application, to illustrate the installation relationship and position relationship of the various components in the door lock assembly 100.

[0062] like Figure 2 As shown, the door hook 101 installed on the door of the electrical device can be inserted into the housing 102 through the door hook hole 182 on the upper surface of the housing 102, so as to be engaged with the rotating wheel 108 arranged inside the housing 102. The door hook 101 can hit the rotating wheel 108 in the process of inserting into the housing 102, so that it rotates in the door closing direction, and the door hook 101 can pull the rotating wheel 108 in the process of pulling out of the housing 102, so that it rotates in the door opening direction. The rotating wheel 108 is rotatably mounted on the rotating wheel seat 104 through its rotating shaft 208, so that the rotating wheel 108 can rotate in the door opening direction or the door closing direction in the rotating wheel seat 104, and the rotating wheel 108 cannot move relative to the rotating wheel seat 104 except for rotation. The rotating wheel seat 104 is limited in the housing limiting hole 103 of the housing 102 by the rotating wheel seat limiting protrusion 106, so that the rotating wheel seat 104 can only move relative to the housing 102 along the extension direction (Z direction) of the housing limiting hole 103. During the linear movement of the rotating wheel seat 104 relative to the housing 102, the rotating wheel 108 and the rotating wheel seat 104 can move relative to the housing 102 at the same time. The pin 112 is fixedly mounted at the lower end of the housing 102 and is kept in contact with the rotating wheel 108 through the bias springs 110, 111. Since the outer edge of the cam of the rotating wheel 108 has different rotation radii, the rotating wheel 108 can move relative to the housing 102 when rotating through the contact between the outer edge of the cam and the pin 112, thereby driving the rotating wheel seat 104 to move relative to the housing 102. During the movement of the rotating wheel seat 104 relative to the housing 102, the micro switch assembly 114 disposed inside the housing 102 can be actuated, so that the micro switch assembly 114 is turned on or off.

[0063] Figure 3Ais a front view of the rotating wheel 108, and shows the relative position relationship between the rotating wheel 108 and the pin 112 at different movement stages. Figure 3B It is a curve relationship diagram of the upward displacement of the rotating wheel seat 104 (door opening displacement) and the internal thrust exerted on the door.

[0064] like Figure 3A As shown, the rotating wheel 108 includes a rotating wheel head 222 , a rotating wheel middle portion 224 and a rotating wheel tail portion 226 . The rotating wheel middle portion 224 is provided with a rotating shaft 208 , and the rotating wheel head 222 is provided with a lower locking hook 202 , an upper locking hook 204 and a locking hook cavity 206 . During the process of inserting the door hook 101 into the shell 102, the door hook head 126 of the door hook 101 can hit the lower lock hook 202 of the rotating wheel 108, causing the rotating wheel 108 to rotate in the door closing direction (clockwise); during the process of pulling the door hook 101 out of the shell 102, the upper side surface 128 of the door hook head of the door hook 101 can pull the upper lock hook 204 of the rotating wheel 108, causing it to rotate in the door opening direction (counterclockwise); when the door is in a closed state, the door hook 101 remains inside the door lock assembly 100, and the door hook hole 124 of the door hook 101 is confined in the lock hook cavity 206 of the rotating wheel 108, so that the door hook 101 is locked and cannot move.

[0065] The wheel tail 226 has a cam structure, and the outer edge of the cam structure has different rotation radii. The cam structure is configured to abut against the pin shaft 112, so that when the wheel 108 rotates in the wheel seat 104 in the door opening direction or the door closing direction, the wheel 108 together with the wheel seat 104 can move inside the housing 102, and during the movement of the wheel seat 104 inside the housing 102, the bias springs 110, 111 can be compressed or rebounded in the barrel-shaped cavities 132, 134, thereby applying a bias force to the wheel seat 104 and the wheel 108.

[0066] The cam structure of the rotating wheel 108 is provided with an inner side and an outer side connected to each other, the inner side is provided with a first working side surface 212 and a second working side surface 214 connected to each other, and the outer side is provided with a third working side surface 216, the first working side surface 212 is a concave surface, the second working side surface 214 protrudes in the first direction, and the third working side surface 216 protrudes in the second direction. During the door opening process, the abutment position of the cam structure of the rotating wheel 108 and the pin shaft 112 transitions from the first working side surface 212 to the second working side surface 214 and the third working side surface 216 in sequence, thereby causing the internal thrust to change.

[0067] Specifically, continue to refer to Figure 3AIn the embodiment of the present application, the inner side includes a circular groove 212 and an ascending slope 214, and the outer side includes a descending slope 216. The circular groove 212 and the ascending slope 214 intersect and connect at point A, and the ascending slope 214 and the descending slope 216 intersect and connect at point B. The inner diameter of the circular groove 212 is the same as the outer diameter of the pin 112, so that the pin 112 can be just clamped in the circular groove 212, and the position where the pin 112 is clamped in the circular groove 212 is the stable position of the rotating wheel 108 at the rotating wheel closing position.

[0068] When the rotating wheel 108 rotates in the door opening direction ( Figure 3A When the door is fully opened, the rotating wheel 108 abuts against the rotating wheel stopper 402 of the rotating wheel seat 104 (see Figure 8C ), at this time, the rotating wheel 108 is in the rotating door opening position, and the pin shaft 112 abuts against the point C of the descending slope 216 of the rotating wheel 108, that is, the stable position of the rotating wheel 108 when the rotating wheel is in the rotating door opening position.

[0069] Continue to refer to Figure 3A For the convenience of the following description, the outer contour of the cam structure is divided into three parts, namely, the inner circular groove 212 corresponds to the OA section of the cam structure, the inner rising slope 214 corresponds to the AB section of the cam structure, and the outer descending slope 216 corresponds to the BC section of the cam structure. The sections other than the OA section, the AB section and the BC section on the outer contour of the cam structure are not described in detail in this article.

[0070] It can be seen that the cam structure of the rotating wheel 108 has different curvatures in the OA section, the AB section, and the BC section, wherein the curvature of the OA section is approximately equal to the curvature of the outer diameter of the pin 112, the curvature of the AB section gradually increases from A to B, and the curvature of the BC section remains the same. During the rotation of the rotating wheel 108 from the rotating wheel closing position to the rotating wheel opening position, the pin 112 abuts against the rotating wheel 108 at the sections with different curvatures of the rotating wheel 108. At the same time, the rotating wheel 108 has different rotating wheel rotation radii in sections with different curvatures, so that the interaction force generated when the pin 112 abuts against the rotating wheel 108 in sections with different curvatures is variable. Under the combined action of the variable action force of the pin 112 and the biasing force of the biasing spring, the force required to pull the rotating wheel 108 (i.e., the inner thrust or the door opening force) is presented as follows: Figure 3B Therefore, in the door lock mechanism of the present application, the pin 112 can also be regarded as a force adjustment device for the inner thrust.

[0071] like Figure 3BAs shown, with "internal thrust" as the vertical coordinate and "door opening displacement" as the horizontal coordinate, the "internal thrust-door opening displacement" curve (hereinafter referred to as the "curve") can be obtained. The curve shown by the solid line is the corresponding relationship curve between the door opening displacement and the internal thrust in the technical solution of this application, and the curve shown by the dotted line is the corresponding relationship curve between the door opening displacement and the internal thrust in the prior art.

[0072] The curve of the technical solution of the present application has four critical points, O, A, B, and C. The four points O, A, B, and C correspond to the four contact positions of the pin 112 and the rotating wheel 108, namely, the contact point O of the pin 112 at the rotating wheel closing position, the contact point A of the pin 112 at the intersection of the OA section and the AB section of the rotating wheel 108, the contact point B of the pin 112 at the intersection of the AB section and the BC section of the rotating wheel 108, and the contact point C of the pin 112 at the rotating wheel opening position. The OA section, AB section, and BC section on the curve correspond to the contact positions of the cam structure of the pin 112 and the rotating wheel 108 in the OA section, the AB section, and the BC section. If the rotating wheel 108 is regarded as fixed, during the door opening process, the pin 112 moves from the circular groove 212 to the OA section, the AB section, and the BC section relative to the rotating wheel 108 to the point C of the descending slope 216. During the door closing process, the pin shaft 112 moves relative to the rotating wheel 108 from point C of the descending slope 216 , through the BC section, the AB section and the OA section, to the circular groove 212 .

[0073] When the door is subjected to an internal thrust in the door-closing position, the rotating wheel 108 can rotate counterclockwise from the door-closing position to the door-opening position. The pin 112, as a force adjustment device for the internal thrust, can apply an adjustment force to the rotating wheel 108 by contacting with the rotating wheel 108, and the adjustment force makes the rotating wheel 108 present two sections of rotation path curves in the process of rotating from the door-closing position to the door-opening position, including: a first section of rotation path (OA section) and a second section of rotation path (AB section), the first section of rotation path (OA section) has a first path starting point (O) and a first path end point (A), the second section of rotation path (AB section) has a second path starting point (A) and a second path end point (B), and the first path end point coincides with the second path starting point. It can be seen that the slope of the first section of rotation path (OA section) on the "internal thrust-door opening displacement" curve is much greater than the slope of the second section of rotation path (AB section).

[0074] The curvature and shape of the circular groove 212 determine the slope and shape of the first rotation path (OA segment), and the curvature and shape of the rising slope 214 determine the slope and shape of the second rotation path (AB segment). In one embodiment of the present application, the slope of the first rotation path (OA segment) is between 80 degrees and 90 degrees, and the displacement corresponding to the first rotation path (OA segment) is between 0 and 2 mm; the slope of the second rotation path (AB segment) is between 0 degrees and 15 degrees, and the displacement corresponding to the second rotation path (AB segment) is between 5 and 10 mm; the ratio of the displacement corresponding to the second rotation path (AB segment) to the displacement corresponding to the first rotation path (OA segment) is between 5 and 20.

[0075] The regulating force from the pin 112 (force regulating device) makes the inner thrust present as follows Figure 3B If the changing internal thrust can only move the wheel 108 to any position between the first path starting point (O) and the second path end point (B), when the changing internal thrust disappears, the wheel 108 will return to the wheel closing position, that is, the position where the pin 112 is engaged in the circular groove 212 of the wheel 108; if the changing internal thrust can move the wheel 108 to a position beyond the second path end point B, when the changing internal thrust disappears, the wheel 108 will move to the wheel opening position. That is, when the wheel 108 rotates to abut against the pin 112 through the BC section, the wheel 108 can automatically rotate to the wheel opening position without the need for internal thrust, that is, the position where the wheel 108 abuts against the pin 112 at point C, under the combined action of the biasing force of the biasing spring and the abutting force of the pin. Considering practical factors such as friction, the BC section of the curve is approximately a vertical line perpendicular to the horizontal axis.

[0076] It can be seen that there is a door opening displacement caused by mechanical manufacturing tolerance before point O on the curve of the technical solution of the present application, and the first path starting point O starts after the tolerance movement ends. At the same time, the internal thrust required for the initial displacement corresponding to point O on the curve is between 5N-10N, indicating that the rotating wheel 108 needs to overcome the static friction of adjacent components before it can start when it rotates or moves initially.

[0077] Correspondingly, when the door is pushed by an external force at the door opening position, the rotating wheel 108 can rotate clockwise from the door opening position to the door closing position. Contrary to the above process, the pin 112 and the rotating wheel 108 first abut at point C. As the door hook 101 is continuously inserted and the rotating wheel 108 rotates clockwise, the abutting position of the pin 112 and the rotating wheel 108 moves from point C to point B through the BC section, then to point A through the AB section, and finally to point O through the OA section.

[0078] Continue to refer to Figure 3BIn the prior art, the corresponding relationship curve between the door opening displacement and the internal thrust has three critical points, O', B and C, among which point O' is very close to point O, segment O'B is approximately a straight line, and the slope of segment O'B is smaller than the slope of segment OA in the technical solution of the present application.

[0079] As is known to those skilled in the art, the internal thrust on the door will do work on the door lock assembly during the door opening process. The magnitude of the work done is the accumulation (integral) of the internal thrust on the door opening displacement, which is reflected in Figure 3B is the area enclosed by the curve and the horizontal and vertical coordinate axes. It can be seen that the work done by the internal thrust of the technical solution of the present application in the process of opening the door is significantly greater than the work done by the internal thrust in the process of opening the door in the prior art, because the internal thrust required to open the door in the initial stage of the door opening (for example, the stage before the door opening displacement of 1.2mm corresponding to point A in the figure) can quickly increase to between 35 and 45 Newtons, and it is necessary to continue to push the cumulative displacement of nearly 8mm under the action of the internal thrust (continue to grow slowly) to push the door open, while the door opening displacement corresponding to the same door opening force in the prior art is approximately 7mm. However, the maximum internal thrust required to open the door in the technical solution of the present application is consistent with the prior art, that is, between 40 and 45 Newtons (the size of the internal thrust corresponding to point B), so the technical solution of the present application does not increase the difficulty for children to push the door from the inside. On the contrary, for the same clothing impact force (initial impact kinetic energy of clothing), if the impact force can only just overcome the door opening resistance in the prior art to do work to push the door open, then the door of the technical solution of the present application cannot be pushed open. In the embodiment of the present application, the technical solution of the present application needs to do more work to overcome the door opening resistance than the prior art by more than 55%.

[0080] Figures 4A-8C It is a schematic diagram of the rotating wheel 108 and the pin shaft 112 at different abutment positions during the door opening process.

[0081] Figure 4A This is an internal side view of the door lock assembly 100 of the present application, wherein the door hook 101 is in the maximum insertion state, and the pin shaft 112 abuts against the point O of the force-bearing surface of the rotating wheel 108. In order to show the matching relationship between the internal components of the door lock assembly 100, part of the structure of the shell 102 is hidden. Figure 4B for Figure 4A An enlarged view of the rotating wheel 108 and a force analysis diagram N are shown.

[0082] like Figure 4A As shown, a wheel stopper 402 is provided on the wheel seat 104 for limiting the rotation range of the wheel 108, so that when the wheel 108 rotates from the wheel closing position to the wheel opening position, the wheel 108 can be stopped by the wheel stopper 402, thereby being able to stabilize at the point C position where the pin shaft 112 abuts against the cam descending slope 216. Figure 4AThe rotating wheel 108 is shown to be in the rotating wheel closing position, that is, the door is in the closed position, and at this time, the pin shaft 112 abuts against the circular groove 212 of the rotating wheel 108.

[0083] like Figure 4B As shown, when the rotating wheel 108 is subjected to the door-opening pulling force P from the door hook (corresponding to the inner thrust of the door) at the rotating wheel closing position, the rotating wheel 108 has a tendency to rotate counterclockwise. Before the rotating wheel 108 rotates or moves, it needs to overcome the influence of the initial manufacturing tolerance and the static friction force, and generate an interaction force F with the pin 112 before moving. At this time, the bias spring has not been compressed, so the rotating wheel seat 104 and the rotating wheel 108 have not been subjected to the elastic force T of the bias spring in the Z direction (vertical direction). Once the rotating wheel 108 starts to rotate counterclockwise, the bias spring is compressed, and the rotating wheel seat 104 and the rotating wheel 108 will be subjected to the elastic force T of the bias spring in the Z direction, which acts on the center of the rotating shaft 208 of the rotating wheel 108, so it will not bring additional torque to the rotating wheel 108. The door-opening pulling force P and the reaction force F of the pin 112 will respectively bring torques in opposite directions to the rotating wheel 108, and the torques generated by the two are equal. The forces applied to the rotating wheel 108 in the Z direction (vertical direction) by the door opening pulling force P, the reaction force F and the elastic force T of the bias spring balance each other.

[0084] Figure 5 It is a schematic diagram of the door hook 101 pulling the rotating wheel 108 upward, wherein the pin 112 abuts against point A of the force-bearing surface of the rotating wheel 108 .

[0085] like Figure 4A and Figure 5 As shown in FIG. 1 , when the rotating wheel 108 starts to rotate, a continuous door-opening pulling force P is applied to the rotating wheel 108, and the rotating wheel 108 can be moved from Figure 4A The position shown is rotated and translated upward to Figure 5 At this time, the pin 112 moves from the position abutting against the circular groove 212 of the rotating wheel 108 to point A of the force-bearing surface relative to the rotating wheel 108, and abuts against the rotating wheel 108 at point A. The rotating wheel 108 moves counterclockwise and upward during the abutment with the pin 112. The outer contour shape of the rotating wheel 108 in the OA section can cause the pin 112 to generate a reaction force F on it, causing the door opening tension P to increase rapidly with the door opening displacement, forming Figure 3B The shape of the curve OA segment is shown. Figure 5 At point A shown, the door opening pull force P or the internal thrust is between 35-45 Newtons, while the door opening displacement is only about 1.2 mm.

[0086] Figure 6 Schematic diagram of the door hook 101 pulling the rotating wheel 108 upward, wherein the pin 112 abuts against the AB section of the force-bearing surface of the rotating wheel 108. Figure 7It is a schematic diagram of the door hook 101 pulling the rotating wheel 108 upward, wherein the pin 112 abuts against point B of the force-bearing surface of the rotating wheel 108 .

[0087] like Figures 5 to 7 As shown, in Figure 5 The rotating wheel position shown in FIG. 1 continues to apply the door-opening pulling force P to the rotating wheel 108, and the rotating wheel 108 can be moved from Figure 5 The position shown is rotated and translated upward to Figure 6 At this time, the pin 112 moves from the position of point A relative to the rotating wheel 108 to the AB section of the force-bearing surface, and contacts the rotating wheel 108 in the AB section. As the door opening pulling force P is continuously applied, the position of the pin 112 relative to the rotating wheel 108 can pass through the AB section to reach the position of point B.

[0088] In the AB section, the rotating wheel 108 moves counterclockwise and upwards during the contact process with the pin 112. The curvature of the outer contour of the rotating wheel 108 in the AB section gradually increases from A to B, so that the pin 112 generates a reaction force F on it, causing the door opening tension P to steadily increase with the door opening displacement, forming Figure 3B The shape of the curve AB segment is shown. Figure 7 At point B shown, the door opening pull P or internal thrust reaches a peak value of 40-45 Newtons, and the door opening displacement is about 8 mm.

[0089] Fig. 8A Schematic diagram of the contact between the pin 112 and the BC section of the force-bearing surface of the rotating wheel 108, Figure 8B for Fig. 8A The enlarged view and force analysis diagram Q of the rotating wheel 108 are shown. Figure 8C It is a schematic diagram showing that the pin shaft 112 and the force-bearing surface of the rotating wheel 108 abut against each other at point C.

[0090] like Figures 7 to 8A As shown, in Figure 7 The rotating wheel position shown in FIG. 1 continues to apply the door-opening pulling force P to the rotating wheel 108, and the rotating wheel 108 can be moved from Figure 7 The position shown is rotated and translated upward to Fig. 8A At this time, the pin 112 moves from the position of point B relative to the rotating wheel 108 to the BC section of the force-bearing surface, and abuts against the rotating wheel 108 in the BC section.

[0091] like Figure 8B As shown, once the position of the pin 112 relative to the rotating wheel 108 exceeds point B and reaches the BC section, the door opening pulling force P is no longer required and the rotating wheel 108 will automatically rotate counterclockwise to the stop position under the action of the elastic force T of the bias spring and the reaction force F of the pin 112. The specific force analysis of the rotating wheel 108 is as follows:

[0092] The curvature and shape of the BC section are set so that the direction of the reaction force F applied by the pin 112 when the BC section abuts against the rotating wheel 108 can generate a torque for the rotating wheel 108 to rotate in the counterclockwise direction. Specifically, the line of action of the reaction force F is located to the right of the rotation center of the rotating wheel 108 (see Figure 8B At the same time, the rotation radius of the wheel 108 in the BC section increases slightly from point B to point C, and the curvature of the wheel 108 in the BC section remains unchanged, so that the wheel 108 can continue to rotate counterclockwise and move upward during the process of contacting the pin 112 in the BC section. Under the action of the above counterclockwise torque, the wheel 108 can rotate until it contacts the wheel stopper 402 and stops. Figure 8C As shown, at this time, the pin shaft 112 moves to point C of the force-bearing surface relative to the rotating wheel 108 , and abuts against the rotating wheel 108 at point C, and the rotating wheel 108 abuts against the rotating wheel stopper 402 of the rotating wheel seat 104 .

[0093] Since the rotation process of the rotating wheel 108 in the BC section against the pin shaft 112 has a certain rotation speed, it can drive the door hook 101 to move upward at a certain speed, so that after the rotating wheel 108 passes the point B position and the internal thrust is removed, the door will bounce outward at a certain speed to the open position.

[0094] During the closing process of the door, under the action of the external thrust, the rotating wheel 108 can move from Figure 8C Rotate clockwise to the position shown Figure 4A The movement process and force mode are opposite to the door opening process, so they will not be described in detail.

[0095] Fig. 9 It is a schematic diagram of a dryer 900 having a door lock assembly 100 of the present application in a door open position.

[0096] like Fig. 9 As shown, the dryer 900 has a dryer body 902, a door 904, a cavity 906, and a door lock assembly 100, wherein a door hook 101 is disposed on the inner side of the door 904, and other components of the door lock assembly 100 are disposed on the dryer body 902 at positions corresponding to the door hook 101. When the door 904 is closed, the door hook 101 can pass through the door hook hole 182 and lock with the rotating wheel 108 inside the door lock assembly 100, thereby closing the cavity 906.

[0097] Fig. 9 The dryer 900 shown is merely an example, and the door lock assembly 100 of the present application may also be installed on various electrical devices having a cavity and a door for closing the cavity, such as a washing machine, a dishwasher, a microwave oven, etc., and may also be installed on other non-electrical devices.

[0098] The purpose of this application is to at least partially solve the technical problems mentioned herein. The door lock assembly of this application can at least achieve the following beneficial technical effects:

[0099] First, the present application accommodates the bias spring in a barrel-shaped cavity on the wheel seat for compression or rebound. The bias spring can generate a stable bias force on the wheel seat and the wheel, so that the movement of the wheel seat and the wheel inside the shell is smoother than in the prior art, thereby providing a smoother overall feel for the door opening and closing action without any jamming, instability or unevenness.

[0100] Second, the cam part on the rotating wheel in the present application is provided with two slopes with different curvatures. The rotating wheel abuts against the pin fixedly arranged inside the door lock housing through any one of the above two slopes with different curvatures. When the rotating wheel starts to rotate from the door closing position, the door opening internal thrust can quickly increase to a size close to the maximum door opening force. In the subsequent rotation of the rotating wheel, the door opening force remains stable and slowly increases until it reaches the door opening critical position. The advantage of such a setting is that the force exerted by the clothes on the door will dissipate before reaching the door opening critical position, so that even if there is a slight displacement of the door, it will not push the door open. Children who mistakenly enter the dryer can apply a continuous internal thrust to the door, which can rotate the cam to cross the door opening critical position, so that the child can push the door open from the inside.

[0101] Although the present application has been described in conjunction with the examples of the embodiments summarized above, it is obvious to those of ordinary skill in the art that various alternatives, modifications, changes, improvements and / or substantially equivalent solutions, whether known or currently or foreseeable in the near future, may be apparent. In addition, the technical effects and / or technical problems described in the present application are exemplary rather than restrictive; so the disclosure in the present application may be used to solve other technical problems and have other technical effects and / or may solve other technical problems. Therefore, the examples of the embodiments of the present application as stated above are intended to be illustrative rather than restrictive. Various changes may be made without departing from the spirit or scope of the present application. Therefore, the present application is intended to include all known or earlier developed alternatives, modifications, changes, improvements and / or substantially equivalent solutions.

Claims

1. A door lock assembly (100), the door lock assembly (100) being used to lock the door of an electrical device, characterized in that include: A housing (102) having a spring abutment surface (162, 164); at least one bias spring (110, 111), one end of the at least one bias spring (110, 111) abutting against the spring abutment surface (162, 164); A rotating wheel seat (104), the rotating wheel seat (104) being movably accommodated inside the housing (102), wherein at least one side of the rotating wheel seat (104) is provided with a barrel-shaped cavity (132, 134), the barrel-shaped cavity (132, 134) being used to accommodate the at least one bias spring (110, 111), the barrel-shaped cavity (132, 134) having a cavity bottom surface (133, 135), so that the other end of the at least one bias spring (110, 111) abuts against the cavity bottom surface (133, 135); A pin shaft (112), the pin shaft (112) being fixedly mounted on the housing (102); and A rotating wheel (108), wherein the rotating wheel (108) has a rotating shaft (208), and the rotating shaft (208) is rotatably mounted on the rotating wheel seat (104), so that the rotating wheel (108) can rotate in the rotating wheel seat (104) in the direction of opening the door or in the direction of closing the door; The rotating wheel (108) further comprises a cam structure, wherein the cam structure is configured to abut against the pin shaft (112), so that when the rotating wheel (108) rotates in the rotating wheel seat (104) in the door opening direction or the door closing direction, the rotating wheel (108) together with the rotating wheel seat (104) can move inside the shell (102), and during the movement of the rotating wheel seat (104) inside the shell (102), the at least one bias spring (110, 111) can be compressed or rebounded in the barrel-shaped cavity (132, 134).

2. The door lock assembly according to claim 1, characterized in that: The at least one biasing spring (110, 111) is two biasing springs (110, 111).

3. The door lock assembly according to claim 2, characterized in that: A barrel-shaped cavity (132, 134) is provided on each side of the rotating wheel seat (104), and the barrel-shaped cavities (132, 134) on both sides of the rotating wheel seat (104) are respectively used to accommodate one of the two bias springs (110, 111), so that the two bias springs (110, 111) are respectively abutted between the spring abutting surface (162, 164) and the cavity bottom surface (133, 135) of the barrel-shaped cavity (132, 134), so that when the rotating wheel seat (104) moves inside the shell (102), the two bias springs (110, 111) can be compressed or rebounded.

4. The door lock assembly according to claim 1, characterized in that: A door hook hole (182) is provided on the surface of the housing (102), and the door hook hole (182) is used to receive a door hook (101) installed on the door (904); The insertion or extraction of the door hook (101) into or from the door hook hole (182) causes the rotating wheel (108) to rotate around the rotating shaft (208) in the door closing direction or the door opening direction.

5. The door lock assembly according to claim 4, characterized in that: The rotating wheel (108) comprises a rotating wheel head (222), a rotating wheel middle part (224) and a rotating wheel tail part (226); the rotating wheel middle part (224) is provided with the rotating shaft (208); the rotating wheel head (222) is provided with a locking hook (202, 204); the locking hook (202, 204) is configured to be engageable with the door hook (101); when the door hook (101) is inserted into or pulled out of the door hook hole (182), the rotating wheel (108) will rotate around the rotating shaft (208) toward the door closing direction or the door opening direction; The rotating wheel (108) has a rotating wheel open position and a rotating wheel closed position during rotation.

6. The door lock assembly according to claim 5, characterized in that: The rotating wheel tail (226) is provided with the cam structure, the cam structure is provided with an inner side surface (212, 214) and an outer side surface (216), the inner side surface (212, 214) has an inner side stabilization point (0), and the outer side surface (216) has a cam outer side stabilization point (C); and When the rotating wheel (108) is in the rotating wheel closing position, the pin shaft (112) is located at the inner stable point (O) of the cam; when the rotating wheel (108) is in the rotating wheel opening position, the pin shaft (112) is located at the outer stable point (C) of the cam.

7. The door lock assembly according to claim 6, characterized in that: The wheel seat (104) is provided with a wheel stopper (402), and the wheel stopper (402) is configured to limit the rotation range of the wheel (108) so that when the wheel (108) rotates from the wheel closing position to the wheel opening position, the wheel (108) can be stabilized at a position where the pin shaft (112) is located at a stable point (C) outside the cam.

8. The door lock assembly according to claim 7, characterized in that: The spring abutment surface (162, 164) is arranged opposite to the bottom surface (133, 135) of the cavity; Wherein, when the rotating wheel (108) rotates from the rotating wheel door closing position to the rotating wheel door opening position, the cam structure of the rotating wheel (108) and the pin shaft (112) generate relative movement, so that the contact position between the cam structure and the pin shaft (112) moves from the inner side stable point (O) to the outer side stable point (C) of the cam, and the rotating wheel seat (104) moves close to the spring contact surface (162, 164) of the housing (102), so that the pair of bias springs (110, 111) are compressed; When the rotating wheel (108) rotates from the rotating wheel opening position to the rotating wheel closing position, the cam structure of the rotating wheel (108) and the pin shaft (112) move relative to each other, so that the abutment position between the cam structure and the pin shaft (112) moves from the outer stable point (C) of the cam to the inner stable point (O), and the rotating wheel seat (104) moves away from the spring abutment surface (162, 164) of the housing (102), so that the pair of bias springs (110, 111) rebound from the compressed state.

9. The door lock assembly according to claim 1, characterized in that: The rotating wheel seat (104) is provided with a rotating wheel receiving portion (152, 153), and the rotating wheel receiving portion (152, 153) is used to install the rotating shaft (208) of the rotating wheel (108), so that the rotating wheel (108) can be installed on the rotating wheel seat (104) and rotate.

10. The door lock assembly according to claim 1, characterized in that: The housing (102) is provided with a pin shaft mounting portion (144, 146), the pin shaft mounting portion (144, 146) having a pin shaft mounting hole (145, 147), and the pin shaft mounting hole (145, 147) is used for fixing and mounting the pin shaft (112).

11. The door lock assembly according to claim 1, characterized in that Also includes: A micro switch assembly (114), wherein the micro switch assembly (114) is configured to: When the rotating wheel (108) rotates from the rotating wheel door closing position to the rotating wheel door opening position, the micro switch assembly (114) disconnects, and When the rotating wheel (108) rotates from the rotating wheel door-opening position to the rotating wheel door-closing position, the micro switch assembly (114) is triggered.

12. The door lock assembly according to claim 11, characterized in that: The rotating wheel seat (104) is also provided with a micro switch assembly actuating portion (172), and the micro switch assembly actuating portion (172) is configured to: When the rotating wheel seat (104) moves close to the spring abutment surface (162, 164), the micro switch assembly actuating portion (172) is disconnected from the micro switch assembly (114), so that the micro switch assembly (114) is not triggered, and When the rotating wheel seat (104) moves away from the spring abutment surfaces (162, 164), the micro switch assembly actuating portion (172) contacts the micro switch assembly (114), thereby triggering the micro switch assembly (114).

13. An electrical device (900), characterized in that It comprises a door lock assembly (100) as claimed in any one of claims 1 to 12.

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