Lock catch structure and drawer box

Abstract

The utility model provides a kind of lock catch structure and drawer box, by being provided with lock catch main body, opening structure, locking holding structure on drawer, and being provided with locking cooperation structure in drawer box, realize locking in drawer closed position by lock catch main body and locking holding structure cooperation, and lock catch structure is located in locking position, drawer in pull-out position can be moved to closed position, i.

Description

Technical Field

[0001] This utility model belongs to the field of storage technology in Wuping, and particularly relates to a locking structure and a drawer box. Background Technology

[0002] In modern furniture, office equipment, and industrial cabinets, drawer-style structures are widely used due to their ease of access to items. However, the locking and anti-theft functions of drawers have always been key design considerations. Traditional drawer locking methods typically use independent locks, where a key rotates the lock cylinder, causing the bolt to engage with a latch on the drawer body to achieve mechanical locking. This method has the following significant drawbacks: First, both locking and unlocking require manual operation with a key, which is cumbersome and cannot achieve automatic locking during the drawer's closing process, resulting in a poor user experience. Second, these locks are functionally limited, typically only providing basic locking capabilities and lacking a quick unlocking mechanism in keyless situations (e.g., in office environments or interior spaces where items need to be frequently accessed).

[0003] To simplify operation, some lockless automatic locking mechanisms have emerged on the market, such as those using magnetic closures or simple spring clips. However, these mechanisms often suffer from unreliable locking and are prone to accidental disengagement due to vibration or shaking, resulting in low security and reliability. Furthermore, these simple mechanisms generally lack effective anti-theft capabilities and cannot be reinforced with external locks such as padlocks when needed, limiting their application scenarios.

[0004] Furthermore, existing structures that combine automatic locking and manual unlocking often separate the actuator (such as the locking tongue) from the operating mechanism (such as the wrench), resulting in complex transmission, numerous parts, and an overall less compact structure, which increases manufacturing costs and failure rates. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a locking structure and drawer box to solve the problems of inconvenient operation and poor reliability of existing drawer box locking schemes.

[0006] To solve the above problems, the technical solution of this utility model is as follows: This utility model discloses a locking structure for use in a drawer box, wherein the drawer box is provided with a drawer, the locking structure has a locking / unlocking position, the drawer has a closing / pull-out position, and the locking structure includes a locking body provided in the drawer, an opening structure, a locking and retaining structure, and a locking engagement structure provided in the drawer box; The opening structure and the locking and retaining structure are respectively linked to the latch body; When the latching structure is in the locked position, the drawer in the pulled-out position can be moved to the closed position. The drawer in the closed position is locked by the latching body and the locking engagement structure, and the locking retaining structure outputs a preset limiting force to restrict the latching body from releasing from the locking engagement structure. When the latch structure is in the unlocked position, the opening structure overcomes the preset limiting force and, in conjunction with the latch body and the locking mechanism, releases the lock, allowing the drawer to be moved to the pull-out position.

[0007] The locking structure of this utility model includes two locking components in the locking body and two locking blocks in the locking engagement structure. The two locking fasteners are respectively arranged on both sides of the drawer in its sliding direction; the two locking blocks are respectively arranged inside the drawer box corresponding to the two locking fasteners.

[0008] The locking structure of this utility model includes a locking rod and a locking tongue; the locking rod is rotatably connected to the drawer, and the rotation direction of the locking rod is perpendicular to the sliding direction of the drawer; the locking tongue is connected to one end of the locking rod that extends out of the drawer, and the locking tongue extends toward the sliding direction of the drawer.

[0009] The locking structure of this utility model includes a locking tongue comprising an extension and a locking tongue body. The extension is connected between the locking tongue body and the locking rod. The locking tongue body is provided with a guide slope and a locking surface corresponding to the locking mating block.

[0010] The locking structure of this utility model has an opening mechanism that is a switch trigger, and the end of the locking rod away from the locking tongue is inserted into and linked to the switch trigger.

[0011] The locking structure of this utility model has a switch trigger with a multi-faceted hole corresponding to each of the two locking rods. The locking rod has a multi-faceted prism segment corresponding to the multi-faceted hole. The locking rod is linked to the switch trigger by passing through the multi-faceted prism segment corresponding to the multi-faceted hole.

[0012] The locking structure of this utility model has a torsion spring as the locking and retaining structure; the torsion spring is respectively sleeved on the locking rod, and the first torsion arm and the second torsion arm of the torsion spring respectively abut against the drawer and the opening structure.

[0013] The locking structure of this utility model also includes a cover plate; the cover plate covers the drawer and cooperates to form a rod receiving space for limiting the rotation space of the two locking rods respectively.

[0014] The locking structure of this utility model has a first locking hole on the opening structure and a corresponding second locking hole on the drawer. When the locking structure is in the locked position, the first locking hole and the second locking hole are coaxial.

[0015] The present invention provides a drawer box, which includes the locking structure described in any one of the above-mentioned claims.

[0016] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art: One embodiment of this utility model involves setting a locking body, an opening structure, and a locking and retaining structure on the drawer, and setting a locking cooperation structure inside the drawer box. The locking body and the locking and retaining structure cooperate to lock the drawer in the closed position. When the locking structure is in the locked position, the drawer in the pulled-out position can be moved to the closed position, thus realizing the automatic locking function when the drawer is closed. The locking and retaining structure outputs a preset limit force to maintain the locked state between the locking body and the locking and retaining structure. This embodiment further sets the opening structure to be linked with the locking body, so that the locking body and the locking and retaining structure can be unlocked by moving the opening structure, thus realizing the manual unlocking function. The opening structure and the locking body are designed as a whole, which simplifies the structure, makes operation convenient and highly reliable. Attached Figure Description

[0017] Figure 1 This is an exploded view of the locking structure of this utility model; Figure 2 This is a horizontal sectional view of the locking structure of this utility model; Figure 3 This is a vertical sectional view of the locking position of the latch structure of this utility model; Figure 4 This is a vertical sectional view of the drawer in the pushed-in state of the locking structure of this utility model; Figure 5 This is a vertical sectional view of the unlocking position of the latch structure of this utility model; Figure 6 This is an overall schematic diagram of the drawer with the locking structure of this utility model; Figure 7 This is a schematic diagram of the overall locking component of the locking structure of this utility model; Figure 8 This is a schematic diagram of the cover plate of the locking structure of this utility model; Figure 9 This is a schematic diagram of the polygonal prism segment of the locking structure of this utility model; Figure 10 This is a schematic diagram of the multi-faceted hole in the locking structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Drawer box; 2. Drawer; 201. Second lock hole; 3. Locking fastener; 301. Locking lever; 3011. Polygonal prism section; 302. Extension piece; 303. Lock tongue body; 3031. Guide slope; 3032. Locking surface; 4. Locking mating block; 5. Switch trigger; 501. Polygonal hole; 502. First lock hole; 6. Torsion spring; 7. Cover plate; 701. Vertical partition; 8. End cap. Detailed Implementation

[0019] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the locking structure and drawer box proposed in this utility model. The advantages and features of this utility model will become clearer from the following description and claims.

[0020] Example 1 See Figures 1 to 10 In one embodiment, a locking structure is used in a drawer box 1, the drawer box 1 is provided with a drawer 2, the locking structure has a locked / unlocked position, the drawer 2 has a closed / pull-out position, and the locking structure includes a locking body provided in the drawer 2, an opening structure, a locking retaining structure and a locking engagement structure provided in the drawer box 1.

[0021] The opening structure and the locking and retaining structure are respectively linked to the main body of the latch.

[0022] When the latching mechanism is in the locked position, drawer 2, which is in the pulled-out position, can be moved to the closed position. In the closed position, drawer 2 is locked by the latch body and the locking engagement structure, and the locking holding structure outputs a preset limit force that restricts the latch body from releasing the locking engagement structure. When the latching mechanism is in the unlocked position, the opening structure overcomes the preset limit force and, in conjunction with the latch body and the locking engagement structure, unlocks the drawer 2, allowing it to move to the pulled-out position.

[0023] This embodiment features a locking body, an opening structure, and a locking and retaining structure on drawer 2, with a locking engagement structure inside drawer box 1. The locking body and locking and retaining structure work together to lock drawer 2 in the closed position. When the locking structure is in the locked position, drawer 2, in the pulled-out position, can be moved to the closed position, thus achieving an automatic locking function when drawer 2 is closed. The locking and retaining structure outputs a preset limit force to maintain the locked state between the locking body and the locking and retaining structure. Furthermore, this embodiment sets the opening structure to be linked with the locking body, allowing unlocking of the locking body and locking and retaining structure by moving the opening structure, thus pulling out drawer 2 and achieving a manual unlocking function. The opening structure and locking body are designed as a single unit, simplifying the structure, making operation convenient, and ensuring high reliability.

[0024] The specific structure of the locking mechanism in this embodiment will be further described below: In this embodiment, the aforementioned latch body includes two latching members 3, and the locking engagement structure includes two locking engagement blocks 4. The two latching members 3 are respectively arranged on both sides of the drawer 2 in its sliding direction. The two locking engagement blocks 4 are respectively arranged inside the drawer box 1 corresponding to the two latching members 3. That is, at least a portion of the two latching members 3 extends to the left and right sides of the drawer 2, and is arranged correspondingly to the locking engagement blocks 4 arranged on the left and right sides of the inner cavity of the drawer box 1.

[0025] Specifically, the locking element 3 may include a locking lever 301 and a locking tongue. The locking lever 301 may be rotatably connected to the drawer 2, and the rotation direction of the locking lever 301 is perpendicular to the sliding direction of the drawer 2. The locking tongue is connected to the end of the locking lever 301 that extends out of the drawer 2, and the locking tongue extends toward the sliding direction of the drawer 2. That is, in the locked state, the locking tongue may be set to extend horizontally toward the inside of the drawer box 1, thereby allowing the locking engagement block 4 to be positioned inward.

[0026] Furthermore, the latch includes an extension 302 and a latch body 303, with the extension 302 connecting the latch body 303 and the locking lever 301. To facilitate automatic locking, the latch body 303 is provided with a guide slope 3031 and a locking surface 3032 corresponding to the locking engagement block 4. Specifically, the latch body 303 has a guide slope 3031 facing the locking engagement block 4, allowing the locking lever 301 to rotate under the guidance of the guide slope when the drawer 2 is pushed in, overcoming a preset limiting force. This allows the lever to avoid the locking engagement block 4 during the pushing process, thus achieving automatic locking. A locking surface 3032 is provided on the side of the guide slope 3031 on the side where the drawer 2 is pulled out. This locking surface 3032 can fit against the side of the locking engagement block 4 facing the depth of the drawer box 1 in the locked state, creating interference and preventing the drawer 2 from being pulled out.

[0027] In this embodiment, the opening structure is a switch trigger 5. The ends of the two locking rods 301 away from the locking tongue can be respectively inserted into and linked to the switch trigger 5, that is, the switch trigger 5 can drive the two locking rods 301 to rotate synchronously.

[0028] Specifically, the switch trigger 5 is provided with two corresponding locking levers 301, each with a multi-faceted hole 501. Each locking lever 301 has a corresponding multi-faceted prism segment 3011. The locking lever 301 is linked to the switch trigger 5 by passing through the multi-faceted prism segment 3011 of the corresponding multi-faceted hole 501. For example, the multi-faceted hole 501 can be a hexagonal hole, and the multi-faceted prism segment 3011 can be a hexagonal prism. Synchronizing the rotation between the switch trigger 5 and the locking lever 301 can be achieved by inserting the hexagonal prism into the hexagonal hole.

[0029] In this embodiment, the locking and retaining structure is a torsion spring 6. The torsion spring 6 is respectively sleeved on the locking rod 301, and the first torsion arm and the second torsion arm of the torsion spring 6 respectively abut against the drawer 2 and the opening structure.

[0030] The torsion spring 6 keeps the switch trigger 5 and the left-right rotating locking element 3 under force and in the locked state, or, during the locking process, if the locking element 3 rotates and passes the locking engagement block 4, it will quickly spring back to complete the locking state.

[0031] The torsion spring 6 can be specifically configured as a double-headed torsion spring 6, which includes a second torsion arm, a torsion spring segment 6, a first torsion arm, a torsion spring segment 6, and a second torsion arm connected in sequence. The two torsion spring segments 6 are respectively sleeved on the two locking rods 301. The first torsion arm abuts against the drawer 2, and the two second torsion arms can abut against the switch trigger 5 respectively. The torque generated by the two torsion spring segments 6 can be transmitted through the two torsion arms to the two locking rods 301 via the switch trigger 5 and output to the latch body 303 (wherein, the area of ​​the switch trigger 5 between the two polygonal holes can be configured as a notch, and the two torsion spring segments 6 can be sleeved on the part of the locking rod 301 that extends into the notch).

[0032] In this embodiment, the aforementioned locking structure may further include a cover plate 7. The cover plate 7 covers the drawer 2 and cooperates to form a rod receiving space for limiting the rotation space of the two locking rods 301. Specifically, a plurality of embedding grooves may be provided on the locking rods 301, and a plurality of vertical partitions 701 may be provided in the cover plate 7, with fitting holes provided on the vertical partitions 701 for insertion into the corresponding embedding grooves. After the cover plate 7 covers the outer wall of the drawer 2, the vertical partitions 701 can be embedded into the embedding grooves of the locking rods 301 through the fitting holes, thereby limiting the rotation axis of the locking rods 301 through the vertical partitions 701.

[0033] Furthermore, the lock hole structure may also include two plugs 8, which are respectively arranged on the left and right sides of the drawer 2. The plugs 8 are provided with rotating holes for the locking rod 301 to pass through, so that the two sides of the locking rod 301 can be rotated and supported by the plugs 8 and the vertical partition 701 respectively, making the rotation more stable.

[0034] In this embodiment, in order to achieve the anti-theft function, the opening structure is provided with a first lock hole 502, and the drawer 2 is provided with a corresponding second lock hole 201. When the latch structure is in the locked position, the first lock hole 502 and the second lock hole 201 are coaxial, and the first lock hole 502 of the switch trigger 5 and the second lock hole 201 of the drawer 2 can be locked by the padlock to achieve the anti-theft function.

[0035] Example 2 This embodiment provides a drawer box 1 based on the first embodiment described above, including the locking structure described in the first embodiment. A locking body, an opening structure, and a locking retaining structure are provided on the drawer 2, and a locking engagement structure is provided inside the drawer box 1. The locking body and the locking retaining structure cooperate to lock the drawer 2 in the closed position. When the locking structure is in the locked position, the drawer 2, which is in the pulled-out position, can be moved to the closed position, thus achieving the automatic locking function when the drawer 2 is closed. The locking retaining structure outputs a preset limit force to maintain the locked state between the locking body and the locking retaining structure. This embodiment further sets the opening structure to be linked with the locking body, so that the locking body and the locking retaining structure can be unlocked by moving the opening structure, thus achieving the manual unlocking function. The opening structure and the locking body are designed as a single unit, simplifying the structure, making operation convenient and highly reliable.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A locking structure for use in a drawer box, wherein the drawer box contains a drawer, characterized in that, The latching structure has a locked / unlocked position, the drawer has a closed / pull-out position, and the latching structure includes a latching body disposed on the drawer, an opening structure, a locking and retaining structure, and a locking engagement structure disposed on the drawer box; The opening structure and the locking and retaining structure are respectively linked to the latch body; When the latching structure is in the locked position, the drawer in the pulled-out position can be moved to the closed position. The drawer in the closed position is locked by the latching body and the locking engagement structure, and the locking retaining structure outputs a preset limiting force to restrict the latching body from releasing from the locking engagement structure. When the latch structure is in the unlocked position, the opening structure overcomes the preset limiting force and, in conjunction with the latch body and the locking mechanism, releases the lock, allowing the drawer to be moved to the pull-out position.

2. The locking structure as described in claim 1, characterized in that, The latch body includes two latching components, and the locking engagement structure includes two locking engagement blocks; The two locking fasteners are respectively arranged on both sides of the drawer in its sliding direction; the two locking blocks are respectively arranged inside the drawer box corresponding to the two locking fasteners.

3. The locking structure as described in claim 2, characterized in that, The locking mechanism includes a locking lever and a locking tongue; the locking lever is rotatably connected to the drawer, and the direction of rotation of the locking lever is perpendicular to the sliding direction of the drawer; the locking tongue is connected to one end of the locking lever that extends out of the drawer, and the locking tongue extends toward the sliding direction of the drawer.

4. The locking structure as described in claim 3, characterized in that, The latch includes an extension and a latch body. The extension is connected between the latch body and the locking rod. The latch body is provided with a guide slope and a locking surface corresponding to the locking engagement block.

5. The locking structure as described in claim 3, characterized in that, The opening mechanism is a switch trigger, and the end of the locking lever away from the bolt is inserted into and linked to the switch trigger.

6. The locking structure as described in claim 5, characterized in that, The switch trigger is provided with a multi-faceted hole corresponding to each of the two locking rods. The locking rod is provided with a multi-faceted prism segment corresponding to the multi-faceted hole. The locking rod is linked to the switch trigger by passing through the multi-faceted prism segment corresponding to the multi-faceted hole.

7. The locking structure as described in claim 3, characterized in that, The locking and retaining structure is a torsion spring; the torsion spring is respectively sleeved on the locking rod, and the first torsion arm and the second torsion arm of the torsion spring respectively abut against the drawer and the opening structure.

8. The locking structure as described in claim 3, characterized in that, It also includes a cover plate; the cover plate closes onto the drawer and cooperates to form a rod receiving space for limiting the rotation space of the two locking rods respectively.

9. The locking structure as described in claim 1, characterized in that, The opening structure has a first lock hole, and the drawer has a corresponding second lock hole. When the locking structure is in the locked position, the first lock hole and the second lock hole are coaxial.

10. A drawer box, characterized in that, Includes the locking structure as described in any one of claims 1 to 9.

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