Connecting assembly, drawer connecting device and drawer

Abstract

The invention belongs to the technical field of plate connection, and particularly discloses a connecting assembly, a drawer connecting device and a drawer. The connecting assembly comprises a base plate, a rotating buckle and an elastic piece. The rotary buckle is connected to the base plate and can rotate around a first axis to an unlocking state or a locking state, a clamping groove is formed in the rotary buckle, and an opening is formed in one end of the clamping groove; when the inserting piece is inserted into the connecting assembly in the first direction, the buckling block of the inserting piece is clamped into the clamping groove from the opening, so that the rotating buckle and the inserting piece reach the locking state, the inserting piece and the rotating buckle can be kept in the locking state, and the inserting piece cannot be pulled out of the rotating buckle. The structure is simple, safe and reliable, a bolt or other locking pieces are not needed for locking, the situation that the plate is loosened when the inserting piece is pulled reversely in the first direction can be prevented, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of panel connection, in particular to a connection component, a drawer connection device and a drawer. Background Art

[0002] At present, generally, boards are connected through connectors. For example, in the installation of a drawer, the side panel of the drawer needs to be connected to the front panel by a connector, which not only facilitates the installation of the front panel and the side panel, but also facilitates the subsequent position adjustment between the side panel and the front panel to adjust the relative position between the front panel and the side panel. The connector generally includes a connection component for connecting to one of the boards and an insert for connecting to the other board, and the insert cooperates with the connection component to achieve the installation between the boards.

[0003] However, the current connector has a complex structure and cumbersome procedures during installation. It is necessary to additionally use screws or other locking parts for positioning and locking, which is time-consuming and laborious. Moreover, when installed through the connector, the fastening force between the boards is insufficient. When one of the boards is pulled, the lock or buckle of the connector will be pulled, and it is easy to occur that the front panel is loose or even the boards are separated from each other, affecting the user experience. For example, in the existing connector with the Chinese publication number CN107684259A and the patent name of connection adjustment device and drawer for drawer front panel, after the front connection code and the rotating buckle of the adjuster are clamped, it is still necessary to lock them with big head screws to avoid the front connection code and the rotating buckle from being loosened easily, and then to ensure that the drawer front panel is not easily loosened. This structure is complex and the assembly process is cumbersome. Summary of the Invention

[0004] The purpose of the present application is to provide a connection component, a drawer connection device and a drawer to solve the technical problem of cumbersome procedures during the installation of the existing connector.

[0005] To achieve the above purpose, in the first aspect of the present application, a connection component is provided, which is used to cooperate with an insert to connect a side panel and a front panel. The insert has a snap block, and the connection component includes:

[0006] A base plate;

[0007] A rotating buckle, which is rotatably connected to the base plate and can rotate around a first axis to an unlocked state or a locked state. The rotating buckle is provided with a slot, and one end of the slot is provided with an opening; and

[0008] An elastic member, one end of which is connected to the rotating buckle and the other end is connected to the base plate;

[0009] When the insert is inserted into the connection component along a first direction, the snap block is snapped into the slot from the opening, so that the rotating buckle and the insert reach a locked state;

[0010] In the locked state, a line passing through the center of the buckle block and extending in the first direction is defined as the first reference line, and a line passing through the center of the buckle block and perpendicular to the first axis is defined as the first connection line. The included angle between the first connection line and the first reference line is θ, where 0° ≤ θ ≤ θ k , θ k is the critical angle that can keep the rotating buckle and the insert in the locked state so that the insert cannot be pulled out from the rotating buckle.

[0011] In some preferred embodiments, when the rotating buckle is in the locked state, the elastic member applies a force to the rotating buckle to rotate it in the locking direction;

[0012] When the rotating buckle is in the unlocked state, the elastic member applies a force to the rotating buckle to rotate it in the unlocking direction, or the direction of the force applied by the elastic member to the rotating buckle is towards the first axis.

[0013] In some preferred embodiments, the card slot has a first inner wall and a second inner wall arranged oppositely, and the second inner wall is closer to the first axis than the first inner wall; when the insert is inserted into the connection component along the first direction, the buckle block pushes the rotating buckle to rotate in the locking direction along the second inner wall, and in the locked state, the first inner wall can abut against the buckle block.

[0014] In some preferred embodiments, in the locked state, the portion of the first inner wall that can abut against the buckle block is defined as the abutting section, and a line extending in the opposite direction of the first direction and intersecting the first axis is defined as the second reference line. The included angle between the tangent line at any point of the abutting section and the second reference line is а, 50° ≤ а ≤ 90°.

[0015] In some preferred embodiments, one end of the card slot away from the opening is a closed end, and the first inner wall extends along the direction from the closed end of the card slot to the opening;

[0016] The portion of the first inner wall that can abut against the buckle block in the locked state is defined as the abutting section. In the extending direction of the first inner wall, the distance between the abutting section and the first axis gradually increases;

[0017] Or, in the extending direction of the first inner wall, the distance between the abutting section and the first axis remains unchanged.

[0018] In some preferred embodiments, the abutting section is an arc-shaped wall or a straight wall.

[0019] In some preferred embodiments, the abutting section is an arc-shaped wall, and the center of the arc-shaped wall is offset from the first axis.

[0020] In some preferred embodiments, one end of the card slot away from the opening is a closed end, and the second inner wall extends along the direction from the closed end to the opening of the card slot;

[0021] The second inner wall is an oblique straight line, and in the extending direction of the second inner wall, the distance between the second inner wall and the first axis gradually increases.

[0022] In some preferred embodiments, the rotating buckle is provided with a first limiting surface and a second limiting surface; the substrate is provided with a first blocking surface and a second blocking surface;

[0023] When the first limiting surface abuts against the first blocking surface, the rotating buckle rotates to the unlocked state;

[0024] When the second limiting surface abuts against the second blocking surface, the rotating buckle rotates to the locked state.

[0025] In some preferred embodiments, a limiting portion is further included, and the limiting portion has a slot for limiting the insertion of the insert along the first direction.

[0026] In some preferred embodiments, when the insert is inserted into the connection assembly along the first direction, the center of the buckle block passes through the center line of the slot.

[0027] In some preferred embodiments, a fixing plate and a first adjusting mechanism are further included; the substrate is slidably connected to the fixing plate along a second direction, the first adjusting mechanism is connected to the fixing plate and the substrate, and the first adjusting mechanism is used to adjust the relative position between the substrate and the fixing plate in the second direction, and the second direction is perpendicular to the first direction.

[0028] To achieve the same purpose, the present application further provides a drawer connection device, which includes an insert and the above-mentioned connection assembly, the insert is used to connect the panel, and the connection assembly is used to connect the side plate.

[0029] In some preferred embodiments, a second adjusting mechanism is further included; the second adjusting mechanism is arranged on the insert and is used to adjust the relative position between the insert and the substrate in a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0030] To achieve the same purpose, the present application further provides a drawer, which includes a side plate, a panel and the above-mentioned drawer connection device; the panel is connected to the insert, and the side plate is connected to the connection assembly.

[0031] The connecting component, drawer connecting device and drawer provided by the present application have the following beneficial effects: The connecting component of the present application has a simple structure, is safe and reliable, and is easy to install. When the insert is inserted into the connecting component in the first direction, the buckle block is snapped into the card slot from the opening, so that the rotating buckle and the insert reach a locked state, forming self-locking. And in this locked state, the line passing through the center of the buckle block and extending in the first direction is defined as the first reference line, and the line passing through the center of the buckle block and perpendicular to the first axis is defined as the first connecting line. The included angle between the first connecting line and the first reference line is θ, where 0° ≤ θ ≤ θ k , θ k is the critical angle that enables the rotating buckle and the insert to remain in the locked state, so that the insert cannot be pulled out of the rotating buckle. When this relationship is satisfied, when pulling the insert in the direction opposite to the first direction, the force applied by the insert to the rotating buckle in the rotating direction is small and cannot drive the rotating buckle to rotate in the unlocking direction. Therefore, there is no need to lock through bolts or other locking parts, and the rotating buckle and the insert can be kept in the locked state, so that the insert cannot be pulled out of the card slot.

[0032] When this connecting component is used in drawer assembly, the insert is connected to the panel, and the connecting component is connected to the side plate. The rotating buckle and the insert are used to lock the side plate and the panel, preventing relative displacement between the panel and the side plate, ensuring that when pulling the panel, there will be no looseness between the panel and the side plate, and further preventing the situation that the panel and the side plate are separated. Thereby improving the user experience and ensuring the safe and reliable use of the drawer.

[0033] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the drawer of the present application;

[0035] Figure 2 is Figure 1 the enlarged view at A in

[0036] Figure 3 is a schematic structural diagram of the connecting component of the present application;

[0037] Figure 4 is a schematic structural diagram of the assembled connecting component and insert of the present application;

[0038] Figure 5 is an exploded structural diagram of the drawer connecting device of the present application;

[0039] Figure 6It is a schematic structural diagram of the connection component and the insert of the present application in an unlocked state;

[0040] Figure 7 It is a schematic structural diagram of the connection component and the insert of the present application in one of the locked states;

[0041] Figure 8 It is Figure 7 An enlarged view of part B of

[0042] Figure 9 It is a schematic structural diagram of the connection component and the insert of the present application in another locked state;

[0043] Figure 10 It is a schematic structural diagram of the rotary buckle of the present application;

[0044] Figure 11 It is a schematic structural diagram of the first adjusting screw of the present application;

[0045] Figure 12 It is a schematic structural diagram when the included angle θ between the first connecting line and the first reference line of the present application is greater than 0.

[0046] In the figure, 10 is the panel; 20 is the side plate; 30 is the drawer connecting device;

[0047] 100 is the insert; 110 is the buckle block;

[0048] 200 is the connection component; 210 is the base plate; 211 is the limiting part; 2111 is the first wall; 2112 is the second wall; 2113 is the slot; 2114 is the third wall; 2115 is the fourth wall; 2116 is the operation hole; 212 is the rotating shaft; 213 is the first blocking surface; 214 is the second blocking surface; 220 is the elastic part; 221 is the spring body; 222 is the first torsion arm; 223 is the second torsion arm; 230 is the rotary buckle; 231 is the card slot; 232 is the opening; 233 is the first inner wall; 233a is the abutting section; 233b is the guiding section; 234 is the second inner wall; 235 is the first limiting surface; 236 is the second limiting surface; 237 is the unlocking groove; 240 is the fixing plate; 241 is the adjusting groove; 242 is the sliding groove; 300 is the first adjusting mechanism; 310 is the first adjusting screw; 311 is the adjusting convex block; 400 is the second adjusting mechanism; 410 is the second adjusting screw. Detailed implementation manners

[0049] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0050] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0051] In the description of the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more. Understanding "greater than", "less than", "exceeding", etc. does not include the corresponding number, and understanding "above", "below", "within", etc. includes the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0052] In the description of the present application, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present application in combination with the specific content of the technical solution.

[0053] Figures 1 to 12 In [description], the first direction is the X direction, the first direction X is the front-back direction of the drawer, the second direction is the Y direction, the second direction Y is the up-down direction of the drawer, the third direction is the Z direction, the third direction Z is the left-right direction of the drawer, the unlocking direction is the Q direction, and the locking direction is the S direction; the first axis is U, the first reference line is V, the second reference line is H, the third reference line is J, the first connection line is W, and the center line of the slot 2113 is P. Among them, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise.

[0054] As Figure 1 and Figure 2 As shown in [figure], a drawer according to an embodiment of the present application includes a panel 10, side plates 20, and a drawer connection device 30. The drawer connection device 30 includes an insert 100 and a connection assembly 200.

[0055] As Figures 2 - 4 shown, a connection assembly 200 according to an embodiment of the present application is used to cooperate with the insert 100 to connect the side plate 20 and the panel 10. The insert 100 is connected to the panel 10, and the connection assembly 200 is connected to the side plate 20. Among them, the insert 100 has a buckle block 110, and the connection assembly 200 includes a substrate 210, a rotating buckle 230, and an elastic member 220.

[0056] Referring to Figures 3 - 9, the rotary buckle 230 is connected to the substrate 210 and can rotate about the first axis U to an unlocked state or a locked state. The rotary buckle 230 is provided with a card slot 231. One end of the card slot 231 is provided with an opening 232, and the other end is a closed end. The card slot 231 has a first inner wall 233 and a second inner wall 234 arranged opposite to each other. The second inner wall 234 is closer to the first axis U than the first inner wall 233; the rotary buckle 230 can be rotatably connected to the substrate 210 through a rotating shaft 212. Among them, the first axis U is the center line of the rotating shaft 212, so that the rotary buckle 230 can rotate about the first axis U to an unlocked state or a locked state; the direction in which the rotary buckle 230 rotates about the first axis U to the unlocked state is the unlocking direction Q, and the reverse of the unlocking direction Q is the locking direction S.

[0057] One end of the elastic member 220 is connected to the rotary buckle 230, and the other end is connected to the substrate 210; the elastic member 220 is used to provide an elastic force for the rotary buckle 230 to drive the rotary buckle 230 to rotate in the unlocking direction Q or the locking direction S.

[0058] Among them, when the insert 100 is inserted into the connection assembly 200 along the first direction X, the buckle block 110 pushes the rotary buckle 230 to rotate in the locking direction S along the second inner wall 234, and the buckle block 110 is inserted into the card slot 231 from the opening 232, so that the rotary buckle 230 and the insert 100 form a locked state and form self-locking. This locked state means that when the insert 100 is pulled in the direction opposite to the first direction X, the insert 100 cannot be pulled out of the rotary buckle 230.

[0059] The rotating shaft 212 (or the first axis U) is located in front of the card slot 231 in the first direction X, and in the unlocked state, the opening 232 is obliquely opposite to the first direction X for the insert 100 to be inserted.

[0060] The connection assembly 200 of the embodiment of the present application has a simple structure, is safe and reliable, and is easy to install. In some embodiments, referring to Figures 6 - 9 12, the first direction X is the insertion direction, and the reverse of the first direction X is the extraction direction. In the locked state, the line passing through the center of the buckle block 110 and extending along the first direction X is defined as the first reference line V. That is to say, this first reference line V is parallel to the first direction X and passes through the center of the buckle block 110. The line passing through the center of the buckle block 110 and perpendicular to and intersecting the first axis U is defined as the first connection line W. The first reference line V and the first connection line W are located in the same plane parallel to the first direction X. The included angle between the first connection line W and the first reference line V is θ, where 0°≤θ≤θ k θ kThe critical angle that enables the rotary buckle and the insert to remain in the locked state so that the insert cannot be pulled out of the rotary buckle. When θ satisfies this relationship, the buckle block 110 and the rotating shaft 212 are basically arranged back and forth along the first direction X. The force M exerted by the insert 100 on the rotary buckle 230 in the rotating direction is relatively small and cannot overcome the inertia of the rotary buckle 230 itself and / or the elastic force exerted by the elastic member 220 on the rotary buckle 230. Therefore, it cannot drive the rotary buckle 230 to rotate in the unlocking direction Q. Thus, there is no need to lock it with bolts or other locking members, and the insert 100 and the rotary buckle 230 can be kept in the locked state, and the insert 100 cannot be pulled out along the pulling-out direction. The angle θ between the first connecting line W and the first reference line V cannot be too large. The closer θ is to 0°, the smaller the force M exerted by the insert 100 on the rotary buckle 230 in the rotating direction, which is more conducive to maintaining the locked state of the insert 100 and the rotary buckle 230. Preferably, θ = 0°, and the first connecting line W coincides with the first reference line V. At this time, the locked state of the insert 100 and the rotary buckle 230 is the most stable. It should be noted that even if the first connecting line W does not coincide with the first reference line V, under the action of the elastic force exerted by the elastic member 220 on the rotary buckle 230 or under the action of the inertia of the rotary buckle 230 itself, the locked state of the insert 100 and the rotary buckle 230 can also be maintained, so that the insert 100 cannot be pulled out of the rotary buckle 230. At this time, θ k is a relatively small angle, generally not exceeding 15°, such as Figure 12 shown Figure 12 in which θ is greater than 0 and less than 15°. At this time, the cooperation between the rotary buckle 230 and the elastic member 220 can keep the insert 100 and the rotary buckle 230 in the locked state.

[0061] Referring to Figure 1 and Figure 4 , the insert 100 is connected to the panel 10, the connecting component 200 is connected to the side plate 20, the panel 10 is inserted into the side plate 20 along the first direction X, so that the insert 100 is inserted into the connecting component 200 along the first direction X. The buckle block 110 pushes the rotary buckle 230 to rotate in the locking direction S along the second inner wall 234. The buckle block 110 slides in the card slot 231 until the panel 10 abuts against the side plate 20. Under the mutual abutting action of the panel 10 and the side plate 20, the buckle block 110 of the insert 100 abuts against the first inner wall 233, thereby enabling the panel 10 and the side plate 20 to form a locked state; the rotary buckle 230 and the insert 100 are used to lock the side plate 20 and the panel 10 to prevent relative displacement between the panel 10 and the side plate 20, so as to ensure that when the user pulls the panel 10, there will be no looseness between the panel 10 and the side plate 20, and further prevent the panel 10 from separating from the side plate 20, thereby improving the user experience and ensuring the safe and reliable use of the drawer.

[0062] In some embodiments of the present application, referring to Figures 6 - 10 , when the buckle block 110 is snapped into the card slot 231 from the opening 232, the buckle block 110 pushes the rotary buckle 230 along the second inner wall 234 to rotate in the locking direction until the rotary buckle 230 is in the locked state. The second inner wall 234 extends along the direction from the closed end of the card slot 231 to the opening 232. The second inner wall 234 is an oblique straight line, and in the extending direction of the second inner wall 234, the distance between the second inner wall 234 and the first axis U gradually increases. Thus, when the buckle block 110 acts on the second inner wall 234, the second inner wall 234 has a guiding effect on the buckle block 110, making it easier for the buckle block 110 to push the rotary buckle 230 to rotate.

[0063] In other embodiments, the second inner wall 234 protrudes from the first inner wall 233 to extend outwardly of the opening 232 to form an extension portion. The extension portion is opposite to the first direction X in the unlocked state. The distance of the extension portion is preferably greater than the diameter of the buckle block 110, so that when the insert 100 is inserted into the connection assembly 200, it can be ensured that the buckle block 110 can directly act on the extension portion of the second inner wall 234 to push the rotary buckle 230 to rotate.

[0064] In some embodiments of the present application, referring to Figure 8 and Figure 10 , the first inner wall 233 has a guiding section 233b and an abutting section 233a. One end of the guiding section 233b is connected to the abutting section 233a, and the other end extends to the opening 232. The guiding section 233b is an oblique straight line, and along the direction away from the opening 232, the distance between it and the first axis U becomes larger and larger, so as to facilitate the buckle block 110 to smoothly enter the opening 232.

[0065] The abutting section 233a can abut against and be relatively fixed to the insert 100 in the locked state. Specifically, when the insert 100 is pulled in the extraction direction, the buckle block 110 of the insert 100 abuts against the abutting section 233a. A line that extends in the extraction direction (the direction opposite to the first direction X) and intersects the first axis U is defined as the second reference line H. That is to say, the second reference line H is parallel to the first direction X and passes through the first axis U. In the locked state, the angle formed by the tangent at any point of the abutting section 233a and the second reference line H is α, where 50° ≤ α ≤ 90°. This can ensure that in the locked state, when the panel 10 is pulled to drive the insert 100 to be pulled in the opposite direction of the first direction X, the abutting section 233a can abut against the buckle block 110 and be relatively fixed, and a force balance state is formed between the rotary buckle 230 and the insert 100, or among the rotary buckle 230, the insert 100, and the elastic member 220. As a result, the rotary buckle 230 cannot be driven to rotate, and the locked state of the rotary buckle 230 and the insert 100 can be better maintained.

[0066] The closer α is to 90°, the closer the force M exerted by the insert 100 on the rotary buckle 230 in the rotational direction is to 0. Without the action of the elastic member 220, a force balance state can be formed between the rotary buckle 230 and the insert 100, making the rotary buckle 230 unable to rotate in the unlocking direction Q and the buckle block 110 unable to be pulled out of the card slot 231.

[0067] When pulling the insert 100, the elastic force of the elastic member 220 can be used to offset the force M transmitted by the insert 100 to the rotary buckle 230 in the rotational direction to maintain the locked state of the rotary buckle 230. Specifically, when the rotary buckle 230 is in the locked state, the elastic member 220 exerts an elastic force F on the rotary buckle 230 to rotate in the locking direction S. This elastic force F can offset the force M transmitted by the insert 100 to the rotary buckle 230 to rotate in the unlocking direction Q. As a result, when pulling the insert 100, the rotary buckle 230 will not be driven to rotate, ensuring that when the panel 10 is pulled, the panel 10 will not become loose, and further preventing the panel 10 from detaching from the side plate 20, thereby improving the user experience and ensuring the safe and reliable use of the drawer.

[0068] In some embodiments of the present application, referring to Figures 6 - 10 , the first inner wall 233 extends along the direction from the closed end of the card slot 231 to the opening 232. In the extending direction of the first inner wall 233, the distance between the abutting section 233a and the first axis U remains unchanged or gradually increases.

[0069] When the distance between the abutting section 233a and the first axis U remains unchanged, the shape of the abutting section 233a can be an arc line with the first axis U as the central axis.

[0070] Reference Figure 8 and Figure 10 when the distance between the abutting section 233a and the first axis U gradually increases, a compensation distance L for adjusting the assembly gap between the insert 100 and the rotary buckle 230 can be formed. When used for drawer installation, Figure 1 and Figure 2 as shown, this assembly gap can specifically adjust the distance between the panel 10 and the side plate 20 to compensate for the machining or assembly tolerances between the panel 10 and the side plate 20, so that the connection between the panel 10 and the side plate 20 is tighter and the gap between the panel 10 and the side plate 20 is reduced. Specifically: when the rotary buckle 230 rotates in the locking direction S, the distance between the contact position of the insert 100 and the rotary buckle 230 and the first axis U can be gradually reduced, so that the insert 100 gradually approaches the first axis U, and then the corresponding connected panel 10 and side plate 20 gradually approach each other to reduce the gap between the panel 10 and the side plate 20 to be connected and eliminate the fitting error. As Figure 7 and Figure 8 shown, when the assembly gap between the panel 10 and the side plate 20 to be connected is small, the buckle block 110 moves to the middle of the card slot 231 or the front part close to the opening 232, and the connection and locking of the panel 10 and the side plate 20 can be realized; as Figure 9 shown, when the assembly gap between the panel 10 and the side plate 20 to be connected is large, the buckle block 110 needs to move to the middle and rear part or the closed section of the card slot 231 to realize the locking of the panel 10 and the side plate 20.

[0071] As Figure 10 shown, the minimum distance between the abutting section 233a and the first axis U is L1, the maximum distance is L2, and the compensation distance L = L2 - L1, where 1.5mm ≤ L ≤ 4㎜; if L is less than 1.5mm, the adjustment of the assembly tolerance between the panel 10 and the side plate 20 of the drawer cannot be applied; if L is greater than 4mm, the size of the rotary buckle 230 is large and its own weight increases, which will increase the load on the elastic member 220 and affect the service life of the elastic member 220, making the structural setting unreasonable. When 1.5mm ≤ L ≤ 4mm is satisfied, it is sufficient to compensate for the assembly tolerance between the panel 10 and the side plate 20 and will not increase the load on the elastic member 220. Preferably, 2mm ≤ L ≤ 3mm.

[0072] In some embodiments of the present application, the abutting section 233a can be an arc-shaped wall or a straight wall. When the abutting section 233a is an arc-shaped wall and the distance between the arc-shaped wall and the first axis U gradually increases, the extending trajectory of the abutting section 233a can be an asymptote trajectory, an involute trajectory, a circular arc trajectory or an Archimedes spiral trajectory, and different trajectories can be used according to actual situations.

[0073] In some embodiments of the present application, preferably, as Figures 3 - 10 shown, the abutting section 233a is an arc-shaped wall, and the trajectory it extends along is an arc line trajectory. Moreover, the center position of this arc-shaped wall is misaligned with the first axis U and is disposed offset from the first axis U. In this way, the distance between the abutting section 233a and the first axis U can gradually increase in the direction approaching the opening 232. When the rotary buckle 230 rotates in the unlocking direction Q, the connection position between the insert 100 and the rotary buckle 230 can gradually approach the first axis U, so as to gradually reduce the distance between the insert 100 and the first axis U, thereby reducing the gap between the panel 10 and the side plate 20 and eliminating the fitting error. Thus, the assembly gap between the panel 10 and the side plate 20 can be adjusted.

[0074] In some embodiments of the present application, as Figure 7 and Figure 8 shown, the locking direction S is clockwise rotation. When the abutting section 233a is an arc-shaped wall, the center of the abutting section 233a is located below the first reference line V, such that in the extending direction of the first inner wall 233, the distance between the abutting section 233a and the first axis U gradually increases; and, the trajectory of the abutting section 233a when the rotary buckle 230 rotates is an eccentric circle trajectory. By setting the center of the abutting section 233a below the first reference line V, it can be ensured that when the abutting section 233a rotates, the angle α formed by the tangent of any point on the abutting section 233a and the second reference line H satisfies: 50° ≤ α ≤ 90°. Therefore, when any point on the abutting section 233a abuts against the buckle block 110, the insert 100 can be locked to prevent the insert 100 from disengaging from the opening 232 of the rotary buckle 230, so as to maintain the locked state and avoid the situation where the panel 10 and the side plate 20 of the drawer become loose.

[0075] In some embodiments of the present application, referring to Figure 6 , the elastic member 220 has a first force application state and a second force application state when the rotary buckle 230 is in the unlocked state; in actual use, one of the following two force application states can be selected for setting.

[0076] The first force application state is that when the rotary buckle 230 rotates to the unlocked state, the direction of the force exerted by the elastic member 220 on the rotary buckle 230 is towards the first axis U, that is, the force that the elastic member 220 pushes the rotary buckle 230 passes through the first axis U, that is, the force application direction of the elastic member 220 is perpendicular to and intersects the first axis U. Then, at this time, the elastic member 220 cannot exert any torsional force on the rotary buckle 230, making the rotary buckle 230 in a rotational equilibrium state. Without other external forces, the rotary buckle 230 can be kept in the unlocked state.

[0077] The second force application state, as Figure 6As shown, when the rotary buckle 230 rotates to the unlocked state, the elastic member 220 applies a force to the rotary buckle 230 to rotate in the unlocking direction Q; that is, at this time, the force applied by the elastic member 220 to the rotary buckle 230 causes the rotary buckle 230 to have a tendency to rotate in the unlocking direction Q. At this time, a component for restricting the rotation of the rotary buckle 230 needs to be provided to prevent the rotary buckle 230 from overshooting the unlocked state, so that the rotary buckle 230 remains in the unlocked state position.

[0078] Among them, as Figure 6 shown, when the insert 100 is inserted into the rotary buckle 230 along the first direction X, the insert 100 pushes the rotary buckle 230 to rotate in the locking direction S through the second inner wall 234, so as to overcome the torsion force of the elastic member 220 on the rotary buckle 230, and drive the elastic member 220 and the rotary buckle 230 to rotate in the locking direction S together; when the elastic member 220 and the rotary buckle 230 rotate in the locking direction S to a certain angle, the direction of the force applied by the elastic member 220 to the rotary buckle 230 will be changed to push the rotary buckle 230 to rotate in the locking direction S, and cooperate with the first inner wall 233 to gradually tighten the distance between the insert 100 and the first axis U, so that the panel 10 and the side plate 20 gradually approach each other, reducing the fitting gap.

[0079] It should be noted that the elastic member 220 can be a torsion spring, a tension spring, a compression spring and other parts with elastic deformation and capable of providing elastic force. Specifically, in some embodiments, referring to Figures 3 - 7 Figure 9, the elastic member 220 is a torsion spring. The torsion spring can assist the movement of the rotary buckle 230 and keep the rotary buckle 230 in the locked state and the unlocked state. The torsion spring includes a spring body 221, a first torsion arm 222 and a second torsion arm 223. Both the first torsion arm 222 and the second torsion arm 223 are connected to the spring body 221. The first torsion arm 222 is connected to the base plate 210, and the second torsion arm 223 is connected to the rotary buckle 230.

[0080] Among them, the perpendicular connection line between the connection point of the first torsion arm 222 and the base plate 210 and the first axis U is defined as the third reference line J; as Figure 6 Figure Figure 7 Figure Figure 9 shown, the right side of the third reference line J is the locking side, and the left side of the third reference line J is the unlocking side. Figure 7 Figure 9 In Figure, the connection point of the second torsion arm 223 and the rotary buckle 230 is located on the locking side of the third reference line J, and the elastic member 220 provides a force for the rotary buckle 230 to rotate in the locking direction S; Figure 6 In Figure, the connection point of the second torsion arm 223 and the rotary buckle 230 is located on the unlocking side of the third reference line J, and the elastic member 220 provides a force for the rotary buckle 230 to rotate in the unlocking direction Q.

[0081] In the unlocked state, when the elastic member 220 is in the first force application state described above, since the direction of the force exerted by the elastic member 220 on the rotary buckle 230 is toward the first axis U, the connection point of the second torsion arm 223 and the rotary buckle 230 is located on the third reference line J, so that the rotary buckle 230 reaches a rotational equilibrium state. When the insert 100 is inserted into the card slot 231 along the first direction X, the insert 100 pushes the rotary buckle 230, which can cause the connection point of the second torsion arm 223 and the rotary buckle 230 to rotate along the locking direction S and move to the locking side of the third reference line J, so that the elastic member 220 can provide a force for the rotary buckle 230 to rotate in the locking direction S, and cooperate with the insert 100 to rotate the rotary buckle 230 in the locking direction S together.

[0082] In the unlocked state, as Figure 6 shown, when the elastic member 220 is in the second force application state described above, the elastic member 220 exerts a force on the rotary buckle 230 to rotate in the unlocking direction Q, then the connection point of the rotary buckle 230 and the second torsion arm 223 is located on the unlocking side of the third reference line J to drive the rotary buckle 230 to rotate in the unlocking direction Q. When the insert 100 is inserted into the card slot 231 along the first direction X, the insert 100 pushes the rotary buckle 230 to rotate, which can cause the connection point of the second torsion arm 223 and the rotary buckle 230 to rotate in the locking direction S, and cross the third reference line J and move to the locking side of the third reference line J to change the direction of the force exerted by the elastic member 220 on the rotary buckle 230, so that the elastic member 220 exerts a force on the rotary buckle 230 to rotate in the locking direction S, and cooperate with the insert 100 to rotate the rotary buckle 230 in the locking direction S together.

[0083] In some embodiments of the present application, referring to Figures 3 to 9 , the rotary buckle 230 is provided with a first limiting surface 235 and a second limiting surface 236; the base plate 210 is provided with a first blocking surface 213 and a second blocking surface 214; when the first limiting surface 235 abuts against the first blocking surface 213, the rotary buckle 230 rotates to the unlocked state; when the second limiting surface 236 abuts against the second blocking surface 214, the rotary buckle 230 rotates to the locked state. That is, the first blocking surface 213 and the second blocking surface 214 are used to limit the rotation angle of the rotary buckle 230 to ensure that the rotary buckle 230 does not overstep when rotating to the unlocked state or the locked state, so as to facilitate subsequent unlocking or locking. It should be noted that when the second limiting surface 236 does not abut against the second blocking surface 214, the rotary buckle 230 can also be in the locked state, as Figure 7 shown, at this time, the rotary buckle 230 and the buckle block 110 can also be locked, so that when the panel 10 is pulled, the panel 10 and the side plate 20 do not become loose.

[0084] It should be noted that, in some embodiments, referring to Figure 3 andFigure 9 To facilitate the subsequent unlocking of the rotary buckle 230, an unlocking groove 237 can be provided on the rotary buckle 230 so that the user can insert a screwdriver into the unlocking groove 237 and drive the rotary buckle 230 to rotate through the screwdriver to achieve the purpose of unlocking or locking. The unlocking groove 237 is preferably a cross groove or a flat groove. Preferably, the unlocking groove 237 is located between the connection between the elastic member 220 and the rotary buckle 230 and the card slot 231, and the connection between the elastic member 220 and the rotary buckle 230, the unlocking groove 237, and the card slot 231 are all located on the trajectory of the unlocking groove 237 rotating around the first axis U, or deviate from the trajectory of the unlocking groove 237 rotating around the first axis U by a small distance, so that the force required to drive the rotary buckle 230 to rotate in the unlocking direction or the locking direction is smaller, reducing the force exerted on the rotary buckle 230 by the elastic member 220, the insert 100, and the screwdriver.

[0085] In some embodiments of the present application, referring to Figures 3 to 9 , the connecting assembly 200 further includes a limiting portion 211, and the limiting portion 211 can be fixed to the substrate 210 or fixed to the side plate. The limiting portion 211 has a slot 2113 for limiting the insertion of the insert 100 along the first direction X, and the width of the slot 2113 in the second direction Y is adapted to the width of the insert 100, so as to facilitate the insert 100 to be inserted into the connecting assembly 200 along the first direction X. When the insert 100 is inserted into the slot 2113, it cannot move along the second direction Y and can only move in the first direction X or the third direction Z, so as to ensure that the direction of the insert 100 is fixed when it is pulled out or inserted, reducing shaking.

[0086] In some embodiments of the present application, referring to Figure 5 and Figure 9 , the limiting portion 211 includes a first wall 2111 and a second wall 2112 that extend along the first direction X and are oppositely arranged, and a slot 2113 for inserting the insert 100 is formed between the first wall 2111 and the second wall 2112. The first wall 2111 and the second wall 2112 are oppositely arranged along the second direction Y to limit the insertion of the insert 100 along the first direction X.

[0087] In some embodiments of the present application, referring to Figures 7 - 9 , when the insert 100 is inserted into the slot 2113 along the first direction X, the center of the buckle block 110 is located on the center line P of the slot 2113. The insert 100 and the rotary buckle 230 with this structure are easy to process and have small processing errors, which can improve the assembly accuracy of the insert 100 and the connecting assembly 200. Preferably, the center of the rotating shaft 212 and the center of the buckle block 110 are both located on the center line P of the slot 2113. As Figures 6 - 9 shown, the lines P, V, and H coincide.

[0088] In some embodiments of the present application, with reference to Figure 5 and Figure 11 , the connecting assembly 200 further includes a fixing plate 240 and a first adjusting mechanism 300; the substrate 210 is slidably connected to the fixing plate 240 along the second direction Y, the first adjusting mechanism 300 is connected to the fixing plate 240 and the substrate 210, and the first adjusting mechanism 300 is used to adjust the relative position between the substrate 210 and the fixing plate 240. The fixing plate 240 is connected to the side plate 20, that is, the first adjusting mechanism 300 can adjust the position between the substrate 210 and the fixing plate 240, so that the position of the connecting assembly 200 and the side plate 20 in the second direction Y can be adjusted through the first adjusting mechanism 300.

[0089] Specifically, with reference to Figure 5 and Figure 11 , the fixing plate 240 is provided with a plurality of adjusting grooves 241, and the first adjusting mechanism 300 includes a first adjusting screw 310; the first adjusting screw 310 is rotatably connected to the substrate 210, the first adjusting screw 310 is provided with a spiral adjusting protrusion 311, the plurality of adjusting grooves 241 are arranged in sequence in the up and down direction, the adjusting protrusion 311 can extend into the adjusting groove 241, by rotating the first adjusting screw 310, the relative position between the fixing plate 240 and the substrate 210 in the second direction Y can be adjusted, the position of the connecting assembly 200 and the side plate in the second direction Y can be adjusted, and further the relative height between the connecting assembly 200 and the insert 100 can be adjusted to align the insert 100 with the connecting assembly 200. In addition, the first adjusting mechanism 300 can also select other adjusting mechanisms such as eccentric rivets to adjust the relative position between the substrate 210 and the fixing plate 240 in the second direction Y. Further, the fixing plate 240 is provided with a sliding groove 242, and the substrate 210 is slidably connected to the sliding groove 242 to slide along the second direction Y on the fixing plate 240.

[0090] In some embodiments of the present application, with reference to Figures 4 to 9 , the drawer connecting device further includes a second adjusting mechanism 400; the second adjusting mechanism 400 is arranged on the insert 100 and is used to adjust the relative position between the insert 100 and the substrate 210 in the third direction Z, so as to adjust the relative position of the panel 10 and the side plate 20 in the left and right directions.

[0091] Specifically, in this embodiment, with reference to Figures 4 to 9, the second adjustment mechanism 400 includes a second adjustment screw 410. The insert 100 is provided with a threaded hole. There are also opposite to the third wall 2114 and the fourth wall 2115 along the third direction Z on the limiting portion 211. Among them, the first wall 2111, the second wall 2112, the third wall and the fourth wall together enclose a slot 2113. When the limiting portion 211 is arranged on the substrate 210, the substrate 210 can serve as the fourth wall 2115 of the limiting portion 211. An operation hole 2116 opposite to the second adjustment screw 410 is provided on the third wall 2114. The second adjustment screw 410 is threadedly connected to the threaded hole. The end of the second adjustment screw 410 away from the nail head is used to abut against the third wall 2114 and the fourth wall 2115 of the slot 2113. The extending direction of the second adjustment screw 410 is parallel to the third direction Z and passes through the operation hole 2116 to rotate the second adjustment screw 410 to adjust the relative position in the left - right direction between the side plate 20 and the panel 10.

[0092] Referring to Figure 1 and Figure 2 , in the third aspect of the present application, a drawer is provided, which includes a side plate 20, a panel 10 and the above - mentioned drawer connection device 30; the panel 10 is connected to the insert 100, the side plate 20 is connected to the connection assembly 200, and the panel 10 and the side plate 20 are cooperatively inserted through the cooperation of the insert 100 and the connection assembly 200.

[0093] In summary, referring to Figures 1 - 11 , for a drawer, a drawer connection device 30 and a connection assembly 200 provided in this embodiment, the working principle is as follows:

[0094] The insert 100 is connected to the panel 10, and the connection assembly 200 is connected to the side plate 20. When installing the panel 10 and the side plate 20, move the panel 10 along the first direction X and close to the side plate 20 so that the insert 100 can be aligned with the slot 2113 and inserted along the first direction X;

[0095] As Figure 6 shown, when the insert 100 is about to be inserted into the connection assembly 200, the rotary buckle 230 is still in the unlocked state. At this time, the elastic member 220 exerts a force on the rotary buckle 230 to rotate in the unlocking direction Q; the buckle block 110 pushes the rotary buckle 230 to rotate in the locking direction S along the second inner wall 234. The connection point of the elastic member 220 and the rotary buckle 230 rotates in the locking direction S, and the direction of the force exerted by the elastic member 220 on the rotary buckle 230 changes, so that the elastic member 220 exerts a force on the rotary buckle 230 to rotate in the locking direction S to cooperate with the insert 100 to rotate the rotary buckle 230 in the locking direction S together;

[0096] As Figure 7 and Figure 9As shown, when the panel 10 abuts against the side plate 20, under the mutual abutting action of the panel 10 and the side plate 20, the buckle block 110 is snapped into the card slot 231 and abuts against the abutting section 233a of the first inner wall 233. The insert 100 and the rotary buckle 230 form a self-lock, so that the panel 10 and the side plate 20 form a locked state. The elastic member 220 applies a force to rotate the rotary buckle 230 in the locking direction S; at this time, under the self-locking action of the insert 100 and the rotary buckle 230, when the panel 10 and the side plate 20 are in a locked state, when the panel 10 is pulled, there will be no looseness between the panel 10 and the side plate 20;

[0097] When unlocking is required, a screwdriver is inserted into the unlocking groove 237 and rotated to drive the rotary buckle 230 to rotate in the unlocking direction Q. When the rotary buckle 230 rotates in the unlocking direction Q to a certain angle, the connection point of the elastic member 220 and the rotary buckle 230 rotates in the unlocking direction Q, and the direction of the force applied by the elastic member 220 to the rotary buckle 230 changes, so that the elastic member 220 applies a force to rotate the rotary buckle 230 in the unlocking direction Q, so that the rotary buckle 230 reaches the unlocked state and remains in the unlocked state. At this time, the insert 100 can be pulled out of the rotary buckle 230, and the panel 10 and the side plate 20 can be separated.

[0098] The connection component 200 of the present application has a simple structure, is safe and reliable, and is easy to install.

[0099] The above is only the preferred embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present application, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. A connection assembly, which is used to cooperate with an insert to connect a side panel and a panel, wherein the insert has a snap block, characterized in that: The connection component comprises: substrate; A rotating buckle, the rotating buckle is rotatably connected to the base plate, and can be rotated around a first axis to an unlocked state or a locked state, the rotating buckle is provided with a slot, and one end of the slot is provided with an opening; and An elastic member, one end of which is connected to the rotating buckle, and the other end of which is connected to the base plate; When the insert is inserted into the connecting assembly along the first direction, the buckle block is inserted into the slot from the opening, so that the rotating buckle and the insert are in a locked state; In the locked state, a line passing through the center of the buckle block and extending along the first direction is defined as a first reference line, and a line passing through the center of the buckle block and perpendicularly intersecting the first axis is defined as a first connecting line, and the angle between the first connecting line and the first reference line is θ, wherein 0°≤θ≤θ k ,θ k A critical angle is provided to enable the rotating buckle and the insert to be kept in the locked state so that the insert cannot be pulled out of the rotating buckle.

2. The connection assembly according to claim 1, characterized in that: When the rotating buckle is in a locked state, the elastic member applies a force to the rotating buckle to rotate in a locking direction; When the rotating buckle is in an unlocking state, the elastic member applies a force to the rotating buckle to rotate in an unlocking direction, or the direction of the force applied by the elastic member to the rotating buckle is toward the first axis.

3. The connection assembly according to claim 1, characterized in that: The slot has a first inner wall and a second inner wall that are arranged opposite to each other, and the second inner wall is closer to the first axis than the first inner wall; when the insert is inserted into the connecting assembly along the first direction, the buckle block pushes the rotating buckle to rotate in the locking direction along the second inner wall, and in the locked state, the first inner wall can abut against the buckle block.

4. The connection assembly according to claim 3, characterized in that: In the locked state, the portion of the first inner wall that can abut against the snap block is defined as an abutment segment, and a line extending in the opposite direction of the first direction and intersecting the first axis is defined as a second reference line, and the angle between the tangent at any point of the abutment segment and the second reference line is а, 50°≤а≤90°.

5. The connection assembly according to claim 3, characterized in that: One end of the slot away from the opening is a closed end, and the first inner wall extends from the closed end of the slot to the opening; A portion of the first inner wall that can abut against the buckle block in a locked state is defined as an abutment section, and in the extension direction of the first inner wall, the distance between the abutment section and the first axis gradually increases; Alternatively, in the extension direction of the first inner wall, the distance between the abutting section and the first axis remains unchanged.

6. The connection assembly according to claim 5, characterized in that: The abutting section is an arc-shaped wall or a straight-line wall.

7. The connection assembly according to claim 6, characterized in that: The abutting section is an arc-shaped wall, and the center of the arc-shaped wall is offset from the first axis.

8. The connection assembly according to claim 3, characterized in that: One end of the slot away from the opening is a closed end, and the second inner wall extends from the closed end of the slot to the opening; The second inner wall is an oblique straight line, and in the extending direction of the second inner wall, the distance between the second inner wall and the first axis gradually increases.

9. The connection assembly according to any one of claims 1 to 4, characterized in that: The rotating buckle is provided with a first limiting surface and a second limiting surface; the base plate is provided with a first blocking surface and a second blocking surface; When the first limiting surface abuts against the first blocking surface, the rotating buckle rotates to an unlocked state; When the second limiting surface abuts against the second blocking surface, the rotating buckle rotates to a locked state.

10. The connection assembly according to any one of claims 1 to 4, characterized in that: It also includes a limiting portion, which has a slot for limiting the insertion of the insert along the first direction.

11. The connection assembly according to claim 10, characterized in that When the insert is inserted into the connection assembly along a first direction, the center of the buckle block passes through the center line of the slot.

12. The connection assembly according to any one of claims 1 to 4, characterized in that: It also includes a fixed plate and a first adjustment mechanism; the substrate is slidably connected to the fixed plate along a second direction, the first adjustment mechanism is connected to the fixed plate and the substrate, and the first adjustment mechanism is used to adjust the relative position between the substrate and the fixed plate in the second direction, and the second direction is perpendicular to the first direction.

13. A drawer connection device, characterized in that: It comprises an insert and a connection assembly according to any one of claims 1 to 12, wherein the insert is used to connect panels, and the connection assembly is used to connect side panels.

14. The drawer connection device according to claim 13, characterized in that: It also includes a second adjustment mechanism; the second adjustment mechanism is arranged on the insert and is used to adjust the relative position of the insert and the substrate in a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

15. A drawer, characterized in that: It comprises a side panel, a panel and a drawer connecting device as claimed in claim 13 or 14; the panel is connected to the insert, and the side panel is connected to the connecting component.

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