Drawer self-locking device and refrigerator

Abstract

The invention relates to a drawer self-locking device and a refrigerator, and the drawer self-locking device comprises a first self-locking structure which comprises a base and a self-locking part movably arranged on the base; the second self-locking structure is movably arranged on the base in the front-back direction and comprises a first matching part and a second matching part; the drawer self-locking device has an unlocking state and a self-locking state, when the drawer self-locking device is switched from the unlocking state to the self-locking state, the second self-locking structure moves backwards, and the second matching piece enables the self-locking piece to be stopped at the front portion of the first matching piece. The drawer self-locking device can realize self-locking of the drawer.

Description

Technical Field

[0001] This disclosure relates to the field of refrigerator technology, specifically to a drawer self-locking device and a refrigerator. Background Technology

[0002] In related technologies, refrigerators typically have drawers on the cabinet, allowing users to access food by pushing and pulling them. Currently, there is an urgent need to design a device that can achieve self-locking of the drawers. Summary of the Invention

[0003] The purpose of this disclosure is to provide a drawer self-locking device that enables the drawer to lock itself.

[0004] To achieve the above objectives, this disclosure provides a drawer self-locking device, comprising: The first self-locking structure includes a base and a self-locking element movably disposed on the base; and The second self-locking structure is movably disposed on the base in the front-rear direction and includes a first mating member and a second mating member; The drawer self-locking device has an unlocked state and a self-locking state. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second self-locking structure moves backward, and the second mating member stops the self-locking member at the front of the first mating member.

[0005] Optionally, the self-locking member is rotatably disposed on the base about a pivot axis extending in the vertical direction, and a locking hook is provided at the front of the self-locking member; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating member pushes the self-locking member to rotate, and the locking hook engages with the first mating member.

[0006] Optionally, the base is provided with a first guide groove, which is constructed as an arc-shaped groove and gradually moves away from the first mating member from back to front; the self-locking member is provided with a mating rod. When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod approaches the first mating member along the first guide groove.

[0007] Optionally, the first self-locking structure includes a slider and an elastic element, the elastic element being connected between the slider and the base, the slider being slidably disposed on the base in the front-back direction, and the self-locking element being rotatably connected to the slider; The base is provided with a second guide groove that communicates with the first guide groove, and the second guide groove extends in the front-back direction; When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod slides into the second guide groove and abuts against the rear wall of the second guide groove.

[0008] Optionally, the self-locking member has a first guide surface on the side opposite to the locking hook, and the first guide surface gradually approaches the locking hook from back to front; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating component pushes the self-locking component to rotate through the first guide surface.

[0009] Optionally, the self-locking components are respectively provided on the left and right sides of the base, and the second self-locking structure includes a first mating component that cooperates with each of the self-locking components, and the second mating component is disposed between the two self-locking components.

[0010] Optionally, the self-locking member has a guide portion and a clearance groove, the guide portion having the first guide surface, and in the unlocked state, the guide portion of one self-locking member is at least partially disposed in the clearance groove of the other self-locking member.

[0011] Optionally, the first guide surface is constructed as an arc-shaped surface, and the second mating component is constructed as a columnar structure extending in the vertical direction.

[0012] Optionally, the second mating component is constructed as a hollow columnar structure.

[0013] Optionally, in the unlocked state, the two self-locking members form a positioning groove and a flared groove, the flared groove being connected to the front side of the positioning groove; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating part enters the positioning groove through the flared groove and abuts against the first guide surface.

[0014] Optionally, when the drawer self-locking device switches from the self-locking state to the unlocking state, the second self-locking structure moves forward, and the first mating member causes the self-locking member to release from its front stop.

[0015] Optionally, the front part of the self-locking member is provided with a locking hook, the locking hook having a second guide surface, the second guide surface gradually moving away from the second mating member from back to front; When the drawer self-locking device switches from the self-locking state to the unlocking state, the first mating member pushes the self-locking member to rotate through the second guide surface, and causes the mating rod to slide into the first guide groove and move away from the first mating member.

[0016] Optionally, the second guide surface is constructed as an arc-shaped surface, and the first mating component is constructed as a mating post extending in the vertical direction.

[0017] According to a second aspect of this disclosure, a refrigerator is provided, including a drawer, a cabinet, and a drawer self-locking device as described above, wherein a first self-locking structure is disposed in the cabinet and a second self-locking structure is disposed in the drawer.

[0018] Optionally, the drawer includes a door, a drawer body, and a guide rail. The door is slidably connected to the cabinet via the guide rail, and the second self-locking structure is disposed on the drawer body.

[0019] Through the above technical solution, in the drawer self-locking device provided in this disclosure, the first self-locking structure can be set in the refrigerator body, and the second self-locking structure can be set in the refrigerator drawer. The drawer can be pulled forward out of the refrigerator body and pushed backward into the refrigerator body. When the drawer is pulled forward out of the refrigerator body, the drawer self-locking device can be in an unlocked state. Here, in this unlocked state, the self-locking member can release its stop at the front of the first mating member. That is, the self-locking member is away from or offset from the movement path of the first mating member. In this way, the first mating member can move forward smoothly, thereby allowing the drawer to be pulled forward smoothly out of the refrigerator body. When the drawer is pushed back into the cabinet, the drawer self-locking device can switch from the unlocked state to the self-locking state. Specifically, when the drawer moves backward, the first mating part and the second mating part move backward synchronously. During this process, the second mating part can drive the self-locking part to move, so that the self-locking part stops at the front of the first mating part. Thus, without the aid of other external forces, the self-locking part can lock the second mating part. Therefore, the above-mentioned setting can realize the self-locking of the drawer after it is pushed into the cabinet. In other words, the drawer self-locking device disclosed herein can realize the self-locking of the drawer.

[0020] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of a drawer self-locking device provided according to an embodiment of the present disclosure, wherein the drawer self-locking device is in an unlocked state; Figure 2 yes Figure 1 A schematic diagram of the self-locking device in the middle drawer from a downward viewing angle; Figure 3 yes Figure 1 A partial structural diagram of the self-locking device in the middle drawer; Figure 4 yes Figure 1 Exploded view of the first self-locking structure of the middle drawer self-locking device; Figure 5 This is a bottom view of the second self-locking structure in the drawer self-locking device provided according to an embodiment of the present disclosure; Figure 6 yes Figure 1 A partial structural diagram of the first self-locking structure of the middle drawer self-locking device; Figure 7 yes Figure 1 A schematic diagram of another part of the first self-locking structure of the middle drawer self-locking device; Figure 8 yes Figure 1 A side view of the slider and the self-locking component in the first self-locking structure of the middle drawer self-locking device; Figure 9 yes Figure 1 A bottom view of the sliding block and the self-locking component in the first self-locking structure of the middle drawer self-locking device; Figure 10 yes Figure 1 A schematic diagram of the front view of the slider and the self-locking component in the first self-locking structure of the middle drawer self-locking device; Figure 11 This is a structural schematic diagram of a drawer self-locking device provided according to an embodiment of the present disclosure, wherein the drawer self-locking device is in a self-locking state; Figure 12 yes Figure 11 Partial exploded diagram of the self-locking device in the middle drawer; Figure 13 yes Figure 11 A partial structural diagram of the first self-locking structure of the middle drawer self-locking device; Figure 14 yes Figure 11 A bottom view of part of the structure of the self-locking device in the middle drawer; Figure 15 yes Figure 11 Another bottom view of part of the structure of the self-locking device in the middle drawer.

[0022] Explanation of reference numerals in the attached figures 1-First self-locking structure, 11-Base, 111-First guide groove, 112-Second guide groove, 1121-Rear wall surface, 12-Self-locking component, 121-Locking hook, 1211-Second guide surface, 122-Matching rod, 123-First guide surface, 124-Guide part, 125-Allowing groove, 13-Slider, 14-Elastic component, 15-Cover plate, 151-First sliding groove, 152-Second sliding groove, 2-Second self-locking structure, 21-First mating component, 22-Second mating component, 23-Connecting plate, 10-Positioning groove, 20-Flanged groove. Detailed Implementation

[0023] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0024] In this disclosure, unless otherwise stated, directional terms such as "front," "back," "up," "down," "left," and "right" are used based on Figure 3 and Figure 12 The XYZ coordinate system is defined as follows: specifically, the X direction refers to the front-to-back direction, with the side indicated by the arrow being front and the opposite being back; the Y direction refers to the left-to-right direction; and the Z direction refers to the up-to-down direction, with the side indicated by the arrow being up and the opposite being down. "Inner" and "outer" refer to the inner and outer contours of each component itself. The terms "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Furthermore, in the following description, when referring to the accompanying drawings, the same reference numerals in different drawings denote the same or similar elements, which will not be elaborated upon in this disclosure.

[0025] According to some embodiments of this disclosure, a drawer self-locking device is provided, referenced to... Figures 1 to 15 As shown, the drawer self-locking device includes: a first self-locking structure 1, including a base 11 and a self-locking member 12 movably disposed on the base 11; and a second self-locking structure 2, movably disposed on the base 11 in the front-back direction, and including a first mating member 21 and a second mating member 22; the drawer self-locking device has an unlocked state and a self-locking state. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second self-locking structure 2 moves backward, and the second mating member 22 stops the self-locking member 12 at the front of the first mating member 21.

[0026] Through the above technical solution, in the drawer self-locking device provided in this disclosure, the first self-locking structure 1 can be installed in the refrigerator body, and the second self-locking structure 2 can be installed in the refrigerator drawer. The drawer can be pulled forward out of the refrigerator body and pushed backward into the refrigerator body. When the drawer is pulled forward out of the refrigerator body, the drawer self-locking device can be in an unlocked state. In this unlocked state, the self-locking member 12 can release its stop at the front of the first mating member 21. That is, the self-locking member 12 is away from or offset from the movement path of the first mating member 21. Thus, the first mating member 21 can move forward smoothly, thereby allowing the drawer to be pulled forward smoothly out of the refrigerator body. When the drawer is pushed back into the cabinet, the drawer self-locking device can switch from the unlocked state to the self-locking state. Specifically, when the drawer moves backward, the first mating part 21 and the second mating part 22 move backward synchronously. During this process, the second mating part 22 can drive the self-locking part 12 to move, so that the self-locking part 12 stops at the front of the first mating part 21. Thus, without the aid of other external forces, the self-locking part 12 can lock the second mating part 22. Therefore, the above-mentioned arrangement can realize the self-locking of the drawer after it is pushed into the cabinet. In other words, the drawer self-locking device disclosed herein can realize the self-locking of the drawer.

[0027] It should be noted that this disclosure does not limit the specific implementation of the second mating member 22 moving backward when the drawer self-locking device switches from the unlocked state to the self-locking state, so that the self-locking member 12 stops at the front of the first mating member 21. This disclosure will describe the implementation in detail in the following embodiments.

[0028] It should also be noted that when the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating member 22 causes the self-locking member 12 to stop at the front of the first mating member 21. This can be understood as follows: in the unlocked state, the self-locking member 12 is released from stopping at the front of the first mating member 21, that is, the self-locking member 12 is away from the movement path of the first mating member 21 or is offset from the movement path of the first mating member 21; in the self-locking state, the self-locking member 12 stops at the front of the first mating member 21; during the process of the drawer self-locking device switching from the unlocked state to the self-locking state, the second mating member 22 drives the self-locking member 12 to move, causing the self-locking member 12 to stop at the front of the first mating member 21.

[0029] In some embodiments of this disclosure, the self-locking member 12 can be disposed on the base 11 in any suitable manner of movement, wherein, in some embodiments, reference is made to... Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 12 , Figure 13 , Figure 14 as well as Figure 15As shown, the self-locking member 12 is rotatably mounted on the base 11 about a pivot axis extending vertically. A locking hook 121 can be provided at the front of the self-locking member 12. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating member 22 can push the self-locking member 12 to rotate, causing the locking hook 121 to engage with the first mating member 21. That is, when the second mating member 22 moves backward, it can push the self-locking member 12 to rotate about a direction close to the first mating member 21 until the locking hook 121 engages with the first mating member 21. Thus, by using the locking hook 121 to engage with the first mating member 21, the self-locking member 12 can stop at the front of the first mating member 21, thereby achieving self-locking of the first mating member 21 and ultimately self-locking of the drawer. The structure is simple, stable, and reliable. Here, it can be understood that in the unlocked state, the locking hook 121 rotates away from the first mating member 21 and releases itself from engagement with the first mating member 21.

[0030] In some embodiments of this disclosure, reference is made to Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 13 , Figure 14 as well as Figure 15 As shown, the base 11 may be provided with a first guide groove 111, which may be constructed as an arc-shaped groove and gradually moves away from the first mating member 21 from back to front. The self-locking member 12 may be provided with a mating rod 122. When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod 122 can move closer to the first mating member 21 along the first guide groove 111. That is, when the second mating member 22 moves backward, the second mating member 22 pushes the lock head gradually closer to the first mating member 21. During this process, the mating rod 122 slides along the first guide groove 111 and also gradually moves closer to the first mating member 21. Thus, through the cooperation of the mating rod 122 and the first guide groove 111, the stability of the lock hook 121 when rotating can be improved, so that the lock head can be stably hooked on the first mating member 21 in the self-locking state. Here, it can be understood that in the unlocked state, the mating rod 122 slides to the side of the first guide groove 111 away from the first mating member 21.

[0031] In some implementations, reference Figure 3 , Figure 4 as well as Figures 6 to 15As shown, the first self-locking structure 1 may include a slider 13 and an elastic element 14. The elastic element 14 may be constructed as a compression spring and is connected between the slider 13 and the base 11. The slider 13 is slidably disposed on the base 11 in the front-back direction, and the self-locking element 12 is rotatably connected to the slider 13. Thus, the self-locking element 12 can both rotate about the aforementioned pivot axis and move in the front-back direction. The base 11 may be provided with a second guide groove 112 communicating with the first guide groove 111. The second guide groove 112 extends in the front-back direction. When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod 122 can slide into the second guide groove 112 and abut against the rear wall surface 1121 of the second guide groove 112. Correspondingly, when the drawer self-locking device switches from the self-locking state to the unlocked state, the mating rod 122 moves forward, slides out of the second guide groove 112, and slides into the side of the first guide groove 111 away from the first mating element 21. In other words, in the unlocked state, the elastic element 14 stores a certain amount of elastic potential energy. When the second self-locking structure 2 moves backward, the second mating element 22 can push the mating rod 122 to slide out of the first guide groove 111. At this time, under the action of the elastic force applied by the elastic element 14, the locking hook 121 can be stably hooked onto the first mating element 21. Then, under the action of the elastic force applied by the elastic element 14, the elastic element 14 will pull or push the mating rod 122 to move backward until the mating rod 122 abuts against the rear wall surface 1121. Thus, the drawer can be self-locked. By setting the above-mentioned elastic element 14, the drawer can be automatically and stably self-locked.

[0032] Understandably, in the above-described embodiment, in the self-locking state, the locking hook 121 is engaged with the first mating member 21, and the mating rod 122 slides into the second guide groove 112 and abuts against the rear wall surface 1121; correspondingly, in the unlocking state, the locking hook 121 is released from engagement with the first mating member 21, and the mating rod 122 slides into the first guide groove 111 and is positioned on the side of the first guide groove 111 away from the first mating member 21.

[0033] Of course, in other embodiments, the step of setting the slider 13 can be omitted, and the elastic element 14 can be directly set between the base 11 and the self-locking element 12. Correspondingly, the back-and-forth movement of the self-locking element 12 can be omitted. That is, when the drawer self-locking device switches from the unlocked state to the self-locking state, the elastic force applied by the elastic element 14 can pull the self-locking element 12 to rotate in the direction close to the first mating part 21, so that the locking hook 121 is stably hooked on the first mating part 21. When the drawer self-locking device switches from the self-locking state to the unlocked state, the self-locking element 12 rotates in the direction away from the first mating part 21, and the elastic element 14 stores the elastic force.

[0034] In some embodiments of this disclosure, reference is made to Figure 3 , Figure 8 , Figure 9 , Figure 10 , Figure 12 , Figure 13 , Figure 14 as well as Figure 15 As shown, the self-locking member 12 may have a first guide surface 123 on the side opposite to the locking hook 121. The first guide surface 123 gradually approaches the locking hook 121 from back to front. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating member 22 pushes the self-locking member 12 to rotate through the first guide surface 123. Thus, since the first guide surface 123 gradually approaches the locking hook 121 from back to front, when the second mating member 22 moves backward, the second mating member 22 can push the self-locking member 12 through the first guide surface 123 to rotate around the direction close to the first mating member 21. Therefore, by utilizing the backward movement of the second mating member 22, the locking hook 121 can be engaged with the first mating member 21, thereby achieving the self-locking of the drawer.

[0035] In some embodiments of this disclosure, reference is made to Figures 3 to 10 as well as Figures 12 to 15 As shown, self-locking elements 12 can be respectively provided on the left and right sides of the base 11. The second self-locking structure 2 can include a first mating element 21 that cooperates with each self-locking element 12, and the second mating element 22 is disposed between two self-locking elements 12. In this way, when the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating element 22 can push the corresponding self-locking element 12 to rotate through the corresponding first guide surface 123, so that the locking hook 121 of each self-locking element 12 is hooked onto the corresponding first mating element 21. Thus, by providing two pairs of self-locking elements 12 and first mating elements 21, the reliability of the drawer self-locking can be improved.

[0036] In some implementations, reference Figure 9 , Figure 10 , Figure 13 as well as Figure 14 As shown, the self-locking member 12 may have a guide portion 124 and a relief groove 125. The guide portion 124 may have a first guide surface 123. In the unlocked state, the guide portion 124 of one self-locking member 12 is at least partially disposed in the relief groove 125 of the other self-locking member 12. In this way, a compact arrangement of the two self-locking members 12 can be achieved in the unlocked state, thereby facilitating the miniaturization design of the drawer self-locking device.

[0037] In some embodiments, reference Figure 2 , Figure 5 , Figure 9 , Figure 10 , Figure 13 as well as Figure 14The first guide surface 123 shown can be constructed as an arc-shaped surface, and the second mating member 22 can be constructed as a columnar structure extending in the vertical direction. In this way, the first guide surface 123 and the second mating member 22 can achieve line-to-line contact, which facilitates the smoothness of the rotation of the self-locking member 12 and reduces the contact area between the first guide surface 123 and the second mating member 22, thereby reducing noise generated when the drawer is pushed back into place. Of course, in other embodiments, the first guide surface 123 can also be constructed as a sloping plane, and the second mating member 22 can be constructed as a columnar structure extending in the vertical direction; this disclosure does not impose excessive limitations on this.

[0038] Optionally, refer to Figure 2 , Figure 5 , Figure 14 and Figure 15 As shown, the second mating part 22 can be constructed as a hollow columnar structure. This facilitates the lightweight design of the drawer self-locking device.

[0039] In some embodiments, reference Figure 5 , Figure 6 and Figure 8 As shown, in the unlocked state, the two self-locking components 12 can form a positioning groove 10 and a flared groove 20, with the flared groove 20 connected to the front side of the positioning groove 10. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating component 22 can enter the positioning groove 10 through the flared groove 20 and abut against the first guide surface 123. In this way, the flared groove 20 can guide the second mating component 22 into the positioning groove 10, and the positioning groove 10 can provide positioning for the second mating component 22, enabling the second mating component 22 to accurately abut against the first guide surface 123, thereby pushing the self-locking component 12 to rotate. Thus, the arrangement of the flared groove 20 and the positioning groove 10 can improve the reliability of the drawer self-locking.

[0040] In some embodiments of this disclosure, reference is made to Figures 3 to 6 as well as Figures 12 to 15 As shown, when the drawer self-locking device switches from the self-locking state to the unlocking state, the second self-locking structure 2 can move forward. The first mating member 21 can release the self-locking member 12 from its front stop. Thus, by moving the first mating member 21 forward, the self-locking member 12 can be moved, releasing it from its front stop. Therefore, without the aid of any external force, the drawer can automatically switch to the unlocking state, thus achieving automatic unlocking of the drawer. Here, the self-locking described above can be understood as automatic locking.

[0041] In some embodiments of this disclosure, reference is made to Figures 3 to 15As shown, the front part of the self-locking member 12 may be provided with a locking hook 121, and the locking hook 121 may have a second guide surface 1211. The second guide surface 1211 gradually moves away from the second mating member 22 from back to front. When the drawer self-locking device switches from the self-locking state to the unlocking state, the first mating member 21 can push the self-locking member 12 to rotate through the second guide surface 1211, and cause the mating rod 122 to slide into the first guide groove 111 and move away from the first mating member 21. In this way, since the second guide surface 1211 gradually moves away from the second mating member 22 from back to front, when the first mating member 21 moves forward, the first mating member 21 can push the self-locking member 12 through the second guide surface 1211 to rotate around the direction close to the second mating member 22. Thus, by utilizing the forward movement of the first mating member 21, the locking hook 121 can be gradually moved away from the first mating member 21 until the locking hook 121 disengages from the first mating member 21. At this time, the mating rod 122 slides into the first guide groove 111 and moves away from the first mating member 21. In this way, the drawer can be automatically unlocked. The structure is simple, stable and reliable.

[0042] In some implementations, reference Figure 3 , Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 12 , Figure 13 , Figure 14 as well as Figure 15 As shown, the second guide surface 1211 can be constructed as an arc-shaped surface, and the first mating member 21 can be constructed as a mating post extending in the vertical direction. In this way, the second guide surface 1211 and the first mating member 21 can achieve line-to-line contact, which facilitates the smoothness of the self-locking member 12 during rotation and reduces the contact area between the second guide surface 1211 and the first mating member 21, thereby reducing noise generated when the drawer is pulled out. Of course, in other embodiments, the second guide surface 1211 can also be constructed as a sloping plane, and the first mating member 21 can be constructed as a mating post extending in the vertical direction; this disclosure does not impose excessive limitations on this.

[0043] In some embodiments of this disclosure, reference is made to Figure 2 and Figure 3 As shown, the first mating part 21 and the second mating part 22 can be arranged at intervals in the front-to-back direction, and the first mating part 21 can be arranged on the rear side of the second mating part 22. This disclosure does not limit this.

[0044] In some embodiments of this disclosure, reference is made to Figure 1 , Figure 4 as well as Figure 11As shown, the first self-locking structure 1 may include a cover plate 15 disposed on the base 11. The cover plate 15 may be provided with a first sliding groove 151 and a second sliding groove 152. The first sliding groove 151 may be slidably connected to the first mating member 21, and the second sliding groove 152 may be slidably connected to the second mating member 22. In this way, the first sliding groove 151 can provide guidance for the first mating member 21, and the second sliding groove 152 can provide guidance for the second mating member 22. This disclosure does not limit this.

[0045] In some embodiments of this disclosure, Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 11 , Figure 12 , Figure 14 as well as Figure 15 As shown, the second self-locking structure 2 may include a connecting plate 23, one side of which can be connected to the drawer, and the other side of which can be connected to a first mating member 21 and a second mating member 22. This allows the first mating member 21 and the second mating member 22 to be integrated into the connecting plate 23, facilitating the assembly of the drawer self-locking device. When the drawer self-locking device switches between an unlocked state and a self-locking state, the first mating member 21 and the second mating member 22 move synchronously.

[0046] In some embodiments of this disclosure, the first self-locking structure 1 may be made of metal or plastic, and this disclosure does not limit this. Correspondingly, the second self-locking structure 2 may be made of metal or plastic, and this disclosure does not limit this either.

[0047] Below, this disclosure will describe in detail the specific usage process of the drawer self-locking device in conjunction with the above-described specific embodiments. First, the drawer self-locking device can have an unlocked state and a self-locking state. In the unlocked state, the slider 13 slides forward, the elastic element 14 is compressed and stores elastic potential energy, the engaging rod 122 of the self-locking element 12 slides out of the second guide groove 112 and into the first guide groove 111, and is located on the side of the first guide groove 111 away from the first engaging element 21. The self-locking element 12 rotates until the locking hook 121 disengages from the first engaging element 21. In the self-locking state, the engaging rod 122 of the self-locking element 12 slides out of the first guide groove 111 and into the second guide groove 112, and slides backward under the elastic force of the elastic element 14, and abuts against the rear wall surface 1121 of the second guide groove 112. The self-locking element 12 rotates until the locking hook 121 engages with the first engaging element 21.

[0048] When using the drawer self-locking device, the first self-locking structure 1 can be installed on the cabinet, and the second self-locking structure 2 can be installed on the drawer.

[0049] When the drawer is pulled forward, the drawer self-locking device can switch from the self-locking state to the unlocking state. During this process, the first mating member 21 moves forward, driving the mating rod 122 to move forward along the second guide groove 112. When the mating rod 122 disengages from the second guide groove 112, the first mating member 21 pushes the self-locking member 12 to rotate, causing the mating rod 122 to slide into the first guide groove 111. As the first mating member 21 continues to move forward, it pushes the self-locking member 12 through the second guide surface 1211, causing it to rotate in a direction away from the first mating member 21, so that the locking hook 121 gradually disengages from the first mating member 21. When the locking hook 121 disengages from the first mating member... At 21 o'clock, the engaging rod 122 is located at the end of the first guide groove 111 away from the first engaging member 21. At this time, the drawer self-locking device is in the unlocked state. Since the first guide groove 111 is an arc-shaped groove, the extension direction of the first guide groove 111 intersects the sliding direction of the slider 13. Therefore, the pulling force applied by the elastic member 14 will cause the engaging rod 122 to abut against the groove wall of the first guide groove 111, and will not allow the engaging rod 122 to slide out of the first guide groove 111. Therefore, the engaging rod 122 can be kept in the first guide groove 111. After that, the user can continue to pull the drawer forward to pull the drawer to a further position.

[0050] When the drawer is pushed back, the drawer self-locking device can switch from the unlocked state to the self-locking state. During this process, the first mating part 21 and the second mating part 22 move backward. When the second mating part 22 abuts against the first guide surface 123, the second mating part 22 pushes the self-locking part 12 through the first guide surface 123 and rotates in a direction that gradually approaches the first mating part 21. When the mating rod 122 slides out of the first guide groove 111, the locking hook 121 hooks onto the first mating part 21. Then, under the action of the elastic force of the elastic member 14, the self-locking part 12 and the first mating part 21 continue to move backward. When the mating rod 122 abuts against the rear wall surface 1121 of the second guide groove 112, the drawer self-locking device is in the self-locking state, thus realizing the self-locking of the drawer.

[0051] According to a second aspect of this disclosure, a refrigerator is provided, including a drawer, a cabinet, and a drawer self-locking device as described above. A first self-locking structure 1 is disposed in the cabinet, and a second self-locking structure 2 is disposed in the drawer. This refrigerator has all the beneficial effects of the aforementioned drawer self-locking device, which will not be elaborated upon here.

[0052] In some embodiments of this disclosure, the drawer may include a door, a drawer body, and guide rails. The door is slidably connected to the refrigerator body via the guide rails, and the second self-locking structure 2 is disposed on the drawer body. Here, since guide rails are generally arranged on both sides of the door, placing the drawer self-locking device between the guide rails and the refrigerator body would require two drawer self-locking devices. This disclosure places the second self-locking structure 2 on the drawer body, so that only one drawer self-locking device is needed between the drawer and the refrigerator body. This effectively simplifies the refrigerator's structure and reduces its failure rate. In some embodiments, the second self-locking structure 2 may be disposed at the bottom of the drawer body; this disclosure does not limit this. Furthermore, the aforementioned front-back direction may correspond to the front-back direction of the refrigerator, and the aforementioned up-down direction may correspond to the direction of gravity of the refrigerator.

[0053] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A drawer self-locking device, characterized in that, include: The first self-locking structure includes a base and a self-locking element movably disposed on the base; as well as The second self-locking structure is movably disposed on the base in the front-rear direction and includes a first mating member and a second mating member; The drawer self-locking device has an unlocked state and a self-locking state. When the drawer self-locking device switches from the unlocked state to the self-locking state, the second self-locking structure moves backward, and the second mating member stops the self-locking member at the front of the first mating member.

2. The drawer self-locking device according to claim 1, characterized in that, The self-locking member is rotatably mounted on the base about a pivot axis extending in the vertical direction, and a locking hook is provided at the front of the self-locking member; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating member pushes the self-locking member to rotate, and the locking hook engages with the first mating member.

3. The drawer self-locking device according to claim 2, characterized in that, The base is provided with a first guide groove, which is an arc-shaped groove that gradually moves away from the first mating member from back to front. The self-locking member is provided with a mating rod. When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod approaches the first mating member along the first guide groove.

4. The drawer self-locking device according to claim 3, characterized in that, The first self-locking structure includes a slider and an elastic element. The elastic element is connected between the slider and the base. The slider is slidably disposed on the base in the front-back direction. The self-locking element is rotatably connected to the slider. The base is provided with a second guide groove that communicates with the first guide groove, and the second guide groove extends in the front-back direction; When the drawer self-locking device switches from the unlocked state to the self-locking state, the mating rod slides into the second guide groove and abuts against the rear wall of the second guide groove.

5. The drawer self-locking device according to any one of claims 2-4, characterized in that, The self-locking component has a first guide surface on the side opposite to the locking hook, and the first guide surface gradually approaches the locking hook from back to front; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating component pushes the self-locking component to rotate through the first guide surface.

6. The drawer self-locking device according to claim 5, characterized in that, The self-locking components are respectively provided on the left and right sides of the base. The second self-locking structure includes a first mating component that cooperates with each of the self-locking components, and the second mating component is disposed between the two self-locking components.

7. The drawer self-locking device according to claim 6, characterized in that, The self-locking member has a guide portion and a clearance groove. The guide portion has a first guide surface. In the unlocked state, the guide portion of one self-locking member is at least partially disposed in the clearance groove of the other self-locking member.

8. The drawer self-locking device according to claim 6, characterized in that, The first guide surface is constructed as an arc-shaped surface, and the second mating component is constructed as a columnar structure extending in the vertical direction.

9. The drawer self-locking device according to claim 8, characterized in that, The second mating component is constructed as a hollow columnar structure.

10. The drawer self-locking device according to claim 6, characterized in that, In the unlocked state, the two self-locking components form a positioning groove and a flared groove, the flared groove being connected to the front side of the positioning groove; When the drawer self-locking device switches from the unlocked state to the self-locking state, the second mating part enters the positioning groove through the flared groove and abuts against the first guide surface.

11. The drawer self-locking device according to any one of claims 1-4, characterized in that, When the drawer self-locking device switches from the self-locking state to the unlocking state, the second self-locking structure moves forward, and the first mating member causes the self-locking member to release from its front stop.

12. The drawer self-locking device according to claim 11, characterized in that, The self-locking component is provided with a locking hook at the front, and the locking hook has a second guide surface, which gradually moves away from the second mating component from back to front. When the drawer self-locking device switches from the self-locking state to the unlocking state, the first mating member pushes the self-locking member to rotate through the second guide surface, and causes the mating rod to slide into the first guide groove and move away from the first mating member.

13. The drawer self-locking device according to claim 12, characterized in that, The second guide surface is an arc-shaped surface, and the first mating component is a mating post extending in the vertical direction.

14. A refrigerator, characterized in that, The device includes a drawer, a cabinet, and a drawer self-locking device as described in any one of claims 1-14, wherein the first self-locking structure is disposed in the cabinet and the second self-locking structure is disposed in the drawer.

15. The refrigerator according to claim 14, characterized in that, The drawer includes a door, a drawer body, and a guide rail. The door is slidably connected to the cabinet via the guide rail, and the second self-locking structure is provided on the drawer body.

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