A snap structure

Abstract

The utility model relates to the field of lock catch discloses a buckle structure, including setting in the desktop board lower surface card post, setting in the table leg upper surface insert post and with the lower surface fixed connection of card post's flexible lock spare, the flexible lock spare includes the flexible snap ring of card post lower surface and the interval arrangement flexible card strip of multiple of setting in the flexible snap ring upper surface and vertical extension, multiple flexible card strip all surround the center hole setting of flexible snap ring, the bottom of card post is provided with through -hole, multiple flexible card strip all are located in through -hole, multiple flexible card strip surrounds the limiting cavity, the end of insert post is passed through the center hole of flexible snap ring and is caught in the limiting cavity after. Adopt the scheme that card post, insert post and flexible lock spare constitute, the simple structure of flexible lock spare, need not complex processing technology and high accuracy assembly, greatly reduce the production difficulty and manufacturing cost of spare part.

Description

Technical Field

[0001] This utility model relates to the field of latches, and in particular to a latching structure. Background Technology

[0002] Existing school desks are becoming increasingly multifunctional, including features such as flip-up storage, height adjustment, and mobility. Current flip-up desks have desktops that flip upwards when not in use and downwards when in use. To secure the desktop to the legs, a snap-fit ​​mechanism is typically used. Existing snap-fit ​​mechanisms generally consist of handles and latches. Pulling / flicking the handle disengages it from the latches, releasing the desktop from its grip. While this mechanism provides good stability, it requires high precision, thus increasing the cost.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a fastening structure that simplifies the complexity of the fastening structure and reduces costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fastening structure includes a locking post disposed on the lower surface of a tabletop, an insert post disposed on the upper surface of a table leg, and a flexible locking member fixedly connected to the lower surface of the locking post; the flexible locking member includes a flexible retaining ring located on the lower surface of the locking post, and multiple flexible retaining strips disposed on the upper surface of the flexible retaining ring and extending vertically at intervals, the multiple flexible retaining strips all surrounding the central hole of the flexible retaining ring; a through hole is opened at the bottom of the locking post, and the multiple flexible retaining strips are all located in the through hole; the multiple flexible retaining strips form a limiting cavity, and the end of the insert post passes through the central hole of the flexible retaining ring and is locked in the limiting cavity.

[0007] The fastening structure includes a connecting part and a variable diameter part integrally formed with the connecting part. The outer diameter of the connecting part is smaller than the outer diameter of the variable diameter part. The outer diameter of the variable diameter part gradually increases from the top to the middle and from the bottom to the middle. The connecting part is used to connect with the table leg, and the middle part of the variable diameter part is used to abut against the inner wall of the multiple flexible clips.

[0008] The fastening structure includes a connecting part and a variable diameter part integrally formed with the connecting part. The outer diameter of the connecting part is smaller than the outer diameter of the variable diameter part. The outer diameter of the variable diameter part gradually increases from the top to the middle and from the bottom to the middle. The connecting part is used to connect with the table leg, and the middle part of the variable diameter part is used to abut against the inner wall of the multiple flexible clips.

[0009] In the aforementioned fastening structure, the variable diameter portion has an inwardly recessed groove, the bottom of the groove forms a step with the connecting portion, and the head of the first fastener abuts against the step.

[0010] In the aforementioned fastening structure, a gasket is further fitted onto the insert post, the upper surface of which is used to abut against the lower surface of the flexible retaining ring, and the lower surface of which is used to abut against the upper surface of the table leg.

[0011] In the aforementioned fastening structure, the flexible retaining ring has a first mounting hole penetrating its upper and lower side walls, the retaining post is a hollow structure, and the lower surface of the retaining post has a second mounting hole. The first mounting hole and the second mounting hole are connected by a second fastener.

[0012] In the aforementioned fastening structure, the inner cavity of the locking post is provided with a pre-embedded part with internal threads, the pre-embedded part corresponds to the second mounting hole, and the rod part of the second fastener is threadedly connected to the corresponding pre-embedded part.

[0013] In the aforementioned fastening structure, the outer wall of the locking post is further provided with a hook for hanging objects.

[0014] In the aforementioned fastening structure, the hook and the locking post are integrally formed.

[0015] Beneficial effects:

[0016] This invention provides a fastening structure consisting of a locking pin, an insert pin, and a flexible locking element. The flexible locking element has a simple structure, requiring no complex processing technology or high-precision assembly, significantly reducing the production difficulty and manufacturing cost of the components. Furthermore, this fastening structure is convenient and efficient to use. The limiting cavity formed by multiple flexible locking strips cooperates with the insert pin to create multi-directional constraints, effectively limiting the shaking of the desktop panel during use and ensuring its secure fixation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a snap-fit ​​structure.

[0018] Figure 2 For the unfolding of the interlocking structure Figure 1 .

[0019] Figure 3 For the unfolding of the interlocking structure Figure 2 .

[0020] Explanation of main component symbols: 1-Clamping post, 11-Through hole, 12-Second mounting hole, 13-Embedded part, 14-Hook, 2-Flexible lock, 21-Flexible retaining ring, 211-Center hole, 212-First mounting hole, 22-Flexible retaining strip, 23-Limiting cavity, 3-Insertion post, 31-Connecting part, 311-Threaded hole, 32-Variable diameter part, 321-Groove, 322-Step. Detailed Implementation

[0021] This utility model provides a fastening structure. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0022] Please see Figures 1-3 This utility model provides a fastening structure, including a locking post 1 disposed on the lower surface of the tabletop, an insert post 3 disposed on the upper surface of the table leg, and a flexible locking member 2 fixedly connected to the lower surface of the locking post 1; the flexible locking member 2 includes a flexible retaining ring 21 located on the lower surface of the locking post 1, and multiple flexible retaining strips 22 disposed on the upper surface of the flexible retaining ring 21 and extending vertically at intervals, the multiple flexible retaining strips 22 being arranged around the central hole 211 of the flexible retaining ring 21; a through hole 11 is opened at the bottom of the locking post 1, and the multiple flexible retaining strips 22 are all located in the through hole 11; the multiple flexible retaining strips 22 form a limiting cavity 23, and the end of the insert post 3 passes through the central hole 211 of the flexible retaining ring 21 and is locked in the limiting cavity 23.

[0023] In practical applications, the locking pin 1 is fixed to the lower surface of the tabletop, the flexible locking element 2 is fixed to the locking pin 1, and the insert pin 3 is fixed to the upper surface of the table leg. When the tabletop needs to be flipped upwards for storage, the tabletop is lifted upwards, causing the multiple flexible locking strips 22 that were originally locking the insert pin 3 to deform under the force, allowing the insert pin 3 to smoothly disengage from the limiting cavity 23 formed by the multiple flexible locking strips 22. When the tabletop needs to be flipped downwards to open, the tabletop provides a downward impact force, causing the multiple flexible locking strips 22 to elastically deform at the moment of contact with the insert pin 3. The brief deformation of the flexible locking strips 22 allows the insert pin 3 to smoothly enter, and then the multiple flexible locking strips 22 return to their shape, thereby allowing the insert pin 3 to smoothly engage in the limiting cavity 23, thus fixing the tabletop.

[0024] This invention abandons the traditional fastening structure consisting of handles and buckles, which requires extremely high precision, and adopts a scheme composed of a locking post 1, an insert post 3, and a flexible locking component 2. The flexible locking component 2 has a simple structure, requiring no complex processing technology or high-precision assembly, which greatly reduces the production difficulty and manufacturing cost of the parts. Moreover, this fastening structure is convenient and efficient to use. The limiting cavity 23 formed by multiple flexible locking strips 22 cooperates with the insert post 3 to form a multi-directional constraint, which can effectively limit the shaking of the desktop during use and ensure that the desktop is firmly fixed.

[0025] In some embodiments, the insert 3 includes a connecting portion 31 and a variable diameter portion 32 integrally formed with the connecting portion 31. The outer diameter of the connecting portion 31 is smaller than the outer diameter of the variable diameter portion 32. The outer diameter of the variable diameter portion 32 gradually increases from the top to the middle, and from the bottom to the middle. The connecting portion 31 is used to connect with the table leg, and the middle part of the variable diameter portion 32 is used to abut against the inner wall of the multiple flexible clips 22. The variable diameter portion 32 has a special shape that is narrow at the top, wide in the middle, and narrow at the bottom, so that it forms a tight and stable nesting effect when it abuts against the inner wall of the flexible clips 22. In addition, the inclined structure formed on the outer wall of the variable diameter portion 32 can automatically guide the insert 3 to slide accurately into the limiting cavity 23, playing a self-centering role and reducing the difficulty for the user to align the insert 3 during operation. At the same time, when the flexible clip 22 comes into contact with the variable diameter part 32, the inclined structure allows the flexible clip 22 to gradually deform, avoiding excessive instantaneous impact force, playing a buffering role, and protecting the structural integrity of the flexible clip 22 and the insert 3.

[0026] In some embodiments, the insert 3 has threaded holes 311 penetrating its upper and lower sidewalls. A first fastener (not shown in the figure) with external threads on its rod body is threaded into the threaded hole 311. The rod body of the first fastener is threadedly connected to the table leg. The threaded connection utilizes the mechanical engagement of the helical pattern to tightly fix the insert 3 to the table leg with the first fastener. The insertion 3 can be connected or separated from the table leg by rotating the first fastener. The operation is simple and requires no complicated tools, enabling quick installation. Furthermore, when the insert 3, table leg, or first fastener is damaged, the corresponding part can be disassembled and replaced individually without replacing the entire fastening system. Specifically, the first fastener is a screw.

[0027] In some embodiments, the variable diameter portion 32 has an inwardly recessed groove 321. The bottom of the groove 321 forms a step 322 with the connecting portion 31, and the head of the first fastener abuts against the step 322. The step 322 formed by the bottom of the groove 321 and the connecting portion 31 provides a stable abutment surface for the head of the first fastener. When the first fastener is tightened, the head fits tightly against the step 322, firmly fixing the insert 3 to the table leg and effectively limiting the axial displacement of the insert 3. In addition, when the first fastener is fully screwed in, it is hidden in the groove 321, improving the overall appearance of the insert 3.

[0028] In some embodiments, a gasket (not shown in the figure) is also fitted onto the insert 3. The upper surface of the gasket is used to abut against the lower surface of the flexible retaining ring 21, and the lower surface of the gasket is used to abut against the upper surface of the table leg. The gasket tightly abuts against the lower surface of the flexible retaining ring 21 and the upper surface of the table leg, respectively, filling the gap between the insert 3 and these two components. Different batches or models of desk components may have slight differences in size. The gasket can act as an adjuster to compensate for the installation gap caused by dimensional tolerances between the insert 3, the flexible retaining ring 21, and the table leg.

[0029] In some embodiments, the flexible retaining ring 21 has a first mounting hole 212 penetrating its upper and lower sidewalls. The retaining post 1 is a hollow structure, and a second mounting hole 12 is provided on the lower surface of the retaining post 1. The first mounting hole 212 and the second mounting hole 12 are connected by a second fastener (not shown in the figure). The second fastener passes through the first mounting hole 212 of the flexible retaining ring 21 and the second mounting hole 12 of the retaining post 1, firmly connecting the two into one unit to form a mechanical locking structure. When it is necessary to replace the flexible locking component 2, only the second fastener needs to be removed to quickly separate and replace the corresponding component. Specifically, the second fastener is a screw.

[0030] In some embodiments, a pre-embedded part 13 with internal threads is provided in the inner cavity of the locking post 1. The pre-embedded part 13 corresponds to the second mounting hole 12, and the rod part of the second fastener is threadedly connected to the corresponding pre-embedded part 13. As a standardized prefabricated part, the high-precision internal thread hole of the pre-embedded part 13 provides a precise installation reference for the second fastener. In addition, compared with directly machining threads on the locking post 1, the connection method of the pre-embedded part 13 significantly improves the tensile and torsional resistance of the connection part. During the frequent opening and closing and load-bearing process of the tabletop, the pre-embedded part 13 can effectively disperse stress, preventing the flexible retaining ring 21 from falling off due to thread stripping or breakage of the locking post 1, thus ensuring the long-term stable operation of the fastening structure. In this embodiment, the outer diameter of the flexible retaining ring 21 is larger than the outer diameter of the table leg, and the first mounting hole 212 is located on the outside of the table leg. Therefore, in practical applications, the first mounting hole 212 is exposed on the outside of the table leg. After the second fastener is installed, it will not collide with the table leg, avoiding damage to the second fastener or the table leg.

[0031] In some embodiments, the outer wall of the locking post 1 is also provided with a hook 14, which is used for hanging items. Specifically, the hook 14 can be used to hang items such as school bags to make full use of the space under the desktop.

[0032] In some embodiments, the hook 14 is integrally formed with the locking post 1. The locking post 1 and the hook 14 are hollow metal castings, which are formed into special shapes by a mold, satisfying both the design requirements and enabling the hook 14 to be integrally formed with the locking post 1, thereby improving the structural rigidity of the hook 14.

[0033] In summary, this utility model adopts a design consisting of a locking post 1, an insert post 3, and a flexible locking component 2. The flexible locking component 2 has a simple structure, requiring no complex processing technology or high-precision assembly, which significantly reduces the production difficulty and manufacturing cost of the components. Moreover, this fastening structure is convenient and efficient to use. The limiting cavity 23 formed by multiple flexible locking strips 22 cooperates with the insert post 3 to form a multi-directional constraint, which can effectively limit the shaking of the desktop board during use and ensure that the desktop board is firmly fixed.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A fastening structure, characterized in that, The device includes a locking post disposed on the lower surface of the tabletop, an insert post disposed on the upper surface of the table leg, and a flexible locking component fixedly connected to the lower surface of the locking post. The flexible locking component includes a flexible retaining ring located on the lower surface of the locking post, and multiple flexible retaining strips disposed on the upper surface of the flexible retaining ring and extending vertically at intervals, with the multiple flexible retaining strips all arranged around the central hole of the flexible retaining ring. A through hole is opened at the bottom of the locking post, and the multiple flexible retaining strips are all located in the through hole. The multiple flexible retaining strips form a limiting cavity, and the end of the insert post passes through the central hole of the flexible retaining ring and is locked in the limiting cavity.

2. The fastening structure according to claim 1, characterized in that, The insert includes a connecting part and a variable diameter part integrally formed with the connecting part. The outer diameter of the connecting part is smaller than the outer diameter of the variable diameter part. The outer diameter of the variable diameter part gradually increases from the top to the middle and from the bottom to the middle. The connecting part is used to connect with the table leg, and the middle part of the variable diameter part is used to abut against the inner wall of the multiple flexible clips.

3. The fastening structure according to claim 2, characterized in that, The insert has threaded holes that penetrate its upper and lower side walls. A first fastener with external threads on the rod body is threaded into the threaded hole. The rod body of the first fastener is threadedly connected to the table leg.

4. The fastening structure according to claim 3, characterized in that, The variable diameter section has an inwardly recessed groove, the bottom of which forms a step with the connecting section, and the head of the first fastener abuts against the step.

5. The fastening structure according to claim 1, characterized in that, A gasket is also fitted onto the insert post. The upper surface of the gasket is used to abut against the lower surface of the flexible retaining ring, and the lower surface of the gasket is used to abut against the upper surface of the table leg.

6. The fastening structure according to claim 1, characterized in that, The flexible retaining ring has a first mounting hole that penetrates its upper and lower side walls. The retaining post is a hollow structure. The lower surface of the retaining post has a second mounting hole. The first mounting hole and the second mounting hole are connected by a second fastener.

7. The fastening structure according to claim 6, characterized in that, The inner cavity of the locking pin is provided with a pre-embedded part with internal threads, the pre-embedded part corresponds to the second mounting hole, and the rod part of the second fastener is threadedly connected to the corresponding pre-embedded part.

8. The fastening structure according to claim 1, characterized in that, The outer wall of the card post is also provided with a hook, which is used to hang objects.

9. The fastening structure according to claim 8, characterized in that, The hook and the locking post are integrally formed.

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