A two-way locking fastener for snap-fit ​​hardware connectors

Abstract

This utility model provides a bidirectional locking fastener for snap-fit ​​hardware connectors, including a base plate, a flip plate, and a base plate two. The flip plate and base plate two are rotatably connected by a flip shaft. An adjustable lever arm is provided between the flip plate and the base plate. The adjustable lever arm includes lever arm one and lever arm two, with a lock fixed between the two lever arms. The base plate one has a snap-fit ​​groove. A slider is fixed to one side of lever arm one, and a groove is provided on one side of lever arm two. A locking block is provided in the groove. A limiting tooth groove is provided on one side of the slider in the groove. A locking tooth is provided on the locking block to cooperate with the limiting tooth groove. The end of the flip shaft extends to the outside of the flip plate and is fixed with a pressure ball head. This application restricts the longitudinal and lateral displacement of the workpiece through a dual structure of "elastic plate groove longitudinal locking + locking tooth groove lateral locking". Even under vibration or frequent stress, it can prevent loosening and solve the problem of easy detachment of traditional snap-fit ​​single locking.

Description

Technical Field

[0001] This application relates to the field of fasteners, and in particular to a two-way locking fastener for snap-fit ​​hardware connectors. Background Technology

[0002] In fields such as equipment assembly, hardware connectors are the core components for splicing workpieces. Traditional snap-fit ​​hardware connectors generally suffer from problems such as "single locking, easy loosening, and poor adaptability," making it difficult to meet the stability requirements of high-frequency use or vibration environments. Specific pain points are as follows: one-way locking and poor anti-loosening performance. Traditional snap-fits mostly rely on a single structure to achieve locking, which can only restrict the displacement of the workpiece in a single direction.

[0003] In scenarios such as equipment handling and equipment vibration, uneven force can easily cause the clips to fall off. After long-term use, vibration may cause them to loosen, affecting the overall stability.

[0004] Traditional snap-fit ​​fasteners are not adjustable and have low adaptability. Their connection length or clamping spacing is fixed, allowing them to fit only workpieces of specific thicknesses or spacings. Even slight deviations in workpiece dimensions can cause the fasteners to fail to engage or engage too loosely, requiring additional shims or replacement of connectors, increasing installation costs and time.

[0005] To address the aforementioned issues, there is an urgent need in this field for a hardware connector that can achieve "two-way locking and anti-loosening, adjustable fit, and tool-free quick operation" in order to improve assembly efficiency and connection stability. Utility Model Content

[0006] The purpose of this application is to address the technical problems of existing snap-fit ​​hardware connectors being prone to loosening and having non-adjustable assembly spacing. Compared with the prior art, this application provides a two-way locking fastener for snap-fit ​​hardware connectors, including a base plate one, a flip plate and a base plate two. The flip plate and the base plate two are rotatably connected by a flip shaft, and two sets of adjustable lever arms are symmetrically provided between the flip plate and the base plate. The adjustable lever arm includes lever arm one and lever arm two. A latch is fixed between the two sets of lever arms. The base plate one is provided with a latching groove that cooperates with the latch. A slider is fixed on one side of lever arm one. A sliding groove that matches the slider is provided on one side of lever arm two. Lever arm one and lever arm two are slidably connected to each other through the slider and the sliding groove. A tension spring is also sleeved on the outside of lever arm one and lever arm two. A through groove is also provided in the sliding groove. A locking block is slidably connected in the through groove. A spring plate is clamped between the locking block and lever arm two. A limiting tooth groove is provided on one side of the slider in the sliding groove. A locking tooth that cooperates with the limiting tooth groove is provided on the locking block. The end of the flipping shaft extends to the outside of the flipping plate and is fixed with a pressing ball head that cooperates with the locking block. A connecting shaft is fixed to the side of the flip plate away from the base plate one. One end of the lever arm two is rotatably connected to the end of the connecting shaft. An elastic plate is also fixed to the top of the base plate two. The upper end of the elastic plate is provided with a slot that engages with the connecting shaft. An unlocking plate is also rotatably connected to one side of the flip plate. One end of the unlocking plate extends to the inside of the flip plate and is fixed with an unlocking buckle that abuts against the end of the slot.

[0007] Furthermore, the sliding direction of the locking block in the through groove is perpendicular to the sliding direction of the slider in the groove, and the tension spring has an elastic force that drives the first lever arm and the second lever arm to approach each other.

[0008] Furthermore, the spring plate has an elastic force that drives the locking teeth away from the limiting tooth groove. When the latch is engaged in the latch groove, the pressing ball head abuts against the locking block and overcomes the elastic force of the spring plate to drive the locking teeth to engage with the limiting tooth groove.

[0009] Furthermore, both substrate one and substrate two are fixed on the two sets of hardware workpieces that need to be fastened.

[0010] Furthermore, the elastic plate has an elastic force that drives the slot close to the connecting shaft.

[0011] Compared to existing technologies, the advantages of this application are: With bidirectional locking, the anti-loosening performance is improved. Through the dual structure of "elastic plate groove longitudinal locking + locking tooth groove lateral locking", the longitudinal and lateral displacement of the workpiece is restricted. Even in the case of vibration or frequent stress, it can prevent loosening and solve the problem of easy detachment of traditional single locking buckles.

[0012] Adjustable and adaptable, compatible with workpieces of various sizes. The adjustable lever arm achieves length extension and retraction through the cooperation of slider and groove, adapting to workpieces of different thicknesses or spacings. No need to replace the connecting parts, reducing installation costs and time, and improving adaptability compared to traditional fixed buckles. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a cross-sectional structural diagram of this application; Figure 3 This is a schematic diagram of the exploded structure of this application; Figure 4 This is a cross-sectional schematic diagram of the adjustable lever arm proposed in this application; Figure 5 for Figure 4 A magnified structural diagram of part A in the middle.

[0014] Explanation of the labels in the diagram: 1. Base plate one; 11. Snap-on slot; 2. Adjustable lever arm; 21. Lever arm one; 211. Slider; 212. Limiting tooth groove; 22. Lock; 23. Lever arm two; 231. Slide groove; 232. Through groove; 24. Tension spring; 25. Locking block; 251. Locking tooth; 26. Spring plate; 3. Flip plate; 31. Unlocking plate; 311. Unlocking buckle; 32. Connecting shaft; 33. Flip shaft; 331. Pressure ball head; 4. Base plate two; 41. Elastic plate; 411. Snap-on slot. Detailed Implementation

[0015] The embodiments will be described clearly and completely with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0016] Example: This utility model provides a two-way locking fastener for snap-fit ​​hardware connectors. Please refer to [link / reference]. Figure 1 - Figure 5 It includes a base plate 1, an adjustable lever arm 2, a flip plate 3, and a base plate 4. These components work together to achieve bidirectional locking, adjustable adaptation, and rapid operation. The substrate 1 is a rectangular metal plate used to fix one of the hardware workpieces to be connected. The surface of the substrate 1 has a snap-fit ​​groove 11, which serves as a locking and fitting structure for the adjustable lever arm 2 to ensure that the lateral position is fixed after the snap-fit ​​is engaged.

[0017] The second substrate 4 has a similar structure to the first substrate 1 and is fixed to another set of hardware workpieces to be connected. A spring plate 41 is fixed to the top of the second substrate 4. The upper end of the spring plate 41 is bent to form a groove 411, which is used to engage with the connecting shaft 32 of the flip plate 3 to limit the flip displacement of the flip plate 3.

[0018] The flip plate 3 is a metal frame structure and is the core transfer component connecting substrate 1 and substrate 2. One side of the flip plate 3 is rotatably connected to substrate 2 4 via a flip shaft 33, and can be flipped around the flip shaft 33 to facilitate angle adjustment during installation and quick alignment with substrate 1.

[0019] A connecting shaft 32 is fixed on the side of the flip plate 3 away from the base plate 1. The connecting shaft 32 is adapted to the slot 411 of the elastic plate 41. After being fastened, it can limit the flipping and shaking of the flip plate 3. An unlocking plate 31 is rotatably connected to the other side of the flip plate 3. One end of the unlocking plate 31 extends to the inside of the flip plate 3 and is fixed with an unlocking buckle 311. The unlocking buckle 311 abuts against the end of the slot 411. Lifting the unlocking plate 31 can push the unlocking buckle 311 to open the slot 411, thereby realizing the unlocking action of the flip plate 3.

[0020] The end of the flipping shaft 33 extends to the outside of the flipping plate 3 and is fixed with a pressure ball head 331, which is used to push the locking block 25 when the flipping plate 3 rotates, triggering the locking action of the adjustable lever arm 2.

[0021] Two sets of adjustable lever arms 2 are symmetrically arranged between the flip plate 3 and the base plate 1, and have the functions of "length adjustment" and "lateral locking". The adjustable lever arms 2 include lever arm 1 21 and lever arm 23. A slider 211 is fixed on one side of lever arm 1 21, and a groove 231 adapted to slider 211 is opened on one side of lever arm 23. The two are slidably connected by slider 211 and groove 231, which can realize length extension and retraction to adapt to workpieces with different spacing.

[0022] A latch 22 is fixed on the side of lever arm 21 away from slider 211. The latch 22 engages with the latching groove 11 of base plate 1, initially restricting lateral displacement. A limiting tooth groove 212 is provided on one side of slider 211 of lever arm 21. A through groove 232 is opened in the sliding groove 231 of lever arm 23. A locking block 25 is slidably connected in the through groove 232. The locking block 25 is provided with locking teeth 251 that mesh with the limiting tooth groove 212. A spring plate 26 is clamped between the locking block 25 and lever arm 23. In the initial state, the spring plate 26 drives the locking teeth 251 away from the limiting tooth groove 212, unlocking the length adjustment function. When the pressing ball head 331 abuts against the locking block 25, it can push the locking teeth 251 to mesh with the limiting tooth groove 212, locking the telescopic length.

[0023] Tension springs 24 are sleeved on the outer sides of lever arm 1 21 and lever arm 23. Tension springs 24 always have the elastic force to drive the two to move closer to each other, ensuring that the adjustable lever arm 2 remains in a retracted state when not locked. When in use, stretching the adjustable lever arm 2 makes it easy to align with the buckle slot 11 during installation.

[0024] The core logic of this fastener is "flipping to trigger bidirectional locking, and lifting to unlock for adjustment and disassembly." It achieves tool-free operation through the linkage of mechanical structures, specifically divided into "locking process" and "unlocking process": Locking process: bidirectional positioning, secure fixation Step 1: Initial alignment. Fix substrate 1 and substrate 4 onto the two sets of workpieces to be connected. Rotate the flip plate 3 around the flip axis 33 so that the latch 22 of the adjustable lever arm 2 is aligned with the latching groove 11 of substrate 1. At this time, the spring plate 26 drives the locking block 25 to reset, the locking tooth 251 separates from the limiting tooth groove 212, and the adjustable lever arm 2 can extend and retract freely. Push the lever arm 21 according to the workpiece spacing so that the latch 22 is engaged in the latching groove 11.

[0025] Step 2: Continue rotating the flip plate 3 in the longitudinal locking position until the flip plate 3 is parallel to the substrate 1. At this time, the connecting shaft 32 of the flip plate 3 contacts the elastic plate 41 of the substrate 2. The elastic plate 41 is compressed and undergoes elastic deformation. After the connecting shaft 32 slides into the slot 411, the elastic plate 41 returns to its original position, and the slot 411 tightly engages the connecting shaft 32, restricting the longitudinal displacement of the flip plate 3 and completing the first locking.

[0026] Step 3: During the locking rotation of the flip plate 3, the pressure ball head 331 at the end of the flip shaft 33 rotates synchronously and gradually contacts the locking block 25. As the flip angle increases, the pressure of the pressure ball head 331 on the locking block 25 increases, overcoming the elasticity of the spring plate 26 and pushing the locking block 25 to slide until the locking teeth 251 of the locking block 25 are fully engaged with the limiting tooth groove 212 of the lever arm 21, locking the extension length of the adjustable lever arm 2. At the same time, the latch 22 and the latch groove 11 remain engaged, restricting lateral displacement and completing the second locking. Finally, bidirectional locking is achieved through "longitudinal latch engagement + lateral tooth groove engagement", preventing the workpiece from loosening in any direction.

[0027] Unlocking process: One-button operation, easy to adjust and disassemble.

[0028] Step 1: Pull up the unlocking plate 31 on the flip plate 3. The unlocking plate 31 rotates around the rotation point, and the unlocking buckle 311 at its end pushes open the slot 411 of the elastic plate 41, so that the slot 411 is separated from the connecting shaft 32 and the locking state is released. At this time, the flip plate 3 can be rotated outward around the flip shaft 33.

[0029] Step 2: When the horizontal unlocking flip plate 3 rotates outward, the pressing ball head 331 of the flip shaft 33 gradually moves away from the locking block 25. The locking block 25 is reset under the elastic force of the spring plate 26, and the locking tooth 251 separates from the limiting tooth groove 212, releasing the horizontal lock. The adjustable lever arm 2 retracts under the action of the tension spring 24. Under the continuous flipping of the flip plate 3, it drives the latch 22 to disengage from the latch groove 11 of the base plate 1.

[0030] Step 3: Adjustment or disassembly. If the workpiece spacing needs to be adjusted, the length of the adjustable lever arm 2 can be adjusted by pulling the first lever arm 21 directly, and then the locking process is repeated. If disassembly is required, the flip plate 3 is rotated completely until it is perpendicular to the second base plate 4, and the two sets of workpieces can be separated.

[0031] Compared with traditional snap-fit ​​hardware connectors, this utility model has the following significant advantages: With bidirectional locking, the anti-loosening performance is improved. Through the dual structure of "elastic plate groove longitudinal locking + locking tooth groove lateral locking", the longitudinal and lateral displacement of the workpiece is restricted. Even in the case of vibration or frequent stress, it can prevent loosening and solve the problem of easy detachment of traditional single locking buckles.

[0032] Adjustable and adaptable, compatible with workpieces of various sizes. The adjustable lever arm 2 achieves length extension and retraction through the cooperation of slider and groove, adapting to workpieces of different thicknesses or spacings. No need to replace the connecting parts, reducing installation costs and time, and improving adaptability compared to traditional fixed buckles.

[0033] The above description is only the best implementation method adopted in this application in combination with current practical needs, but the scope of protection of this application is not limited thereto.

Claims

1. A two-way locking fastener for a snap-fit ​​hardware connector, comprising a base plate one (1), a flip plate (3), and a base plate two (4), characterized in that, The flip plate (3) and the second substrate (4) are rotatably connected by a flip shaft (33), and two sets of adjustable lever arms (2) are symmetrically provided between the flip plate (3) and the first substrate (1). The adjustable lever arm (2) includes a lever arm one (21) and a lever arm two (23). A latch (22) is fixed between the two sets of lever arms one (21). The base plate one (1) is provided with a latching groove (11) that cooperates with the latch (22). A slider (211) is fixed on one side of the lever arm one (21). A sliding groove (231) that matches the slider (211) is provided on one side of the lever arm two (23). The lever arm one (21) and the lever arm two (23) are slidably connected relative to each other through the slider (211) and the sliding groove (231). The outer sides of the lever arm one (21) and the lever arm two (23) are also sleeved. There is a tension spring (24), and a through groove (232) is provided in the slide groove (231). A locking block (25) is slidably connected in the through groove (232). A spring plate (26) is clamped between the locking block (25) and the lever arm (23). The slider (211) has a limiting tooth groove (212) on one side in the slide groove (231). The locking block (25) has a locking tooth (251) that cooperates with the limiting tooth groove (212). The end of the flipping shaft (33) extends to the outside of the flipping plate (3) and is fixed with a pressure ball head (331) that cooperates with the locking block (25). The flip plate (3) is fixed with a connecting shaft (32) on the side away from the base plate (1). One end of the lever arm (23) is rotatably connected to the end of the connecting shaft (32). The top of the base plate (4) is also fixed with an elastic plate (41). The upper end of the elastic plate (41) is provided with a slot (411) that engages with the connecting shaft (32). The flip plate (3) is also rotatably connected with an unlocking plate (31) on one side. One end of the unlocking plate (31) extends to the inside of the flip plate (3) and is fixed with an unlocking buckle (311) that abuts against the end of the slot (411).

2. The dual locking fastener of claim 1, wherein, The sliding direction of the locking block (25) in the through groove (232) is perpendicular to the sliding direction of the slider (211) in the slide groove (231), and the tension spring (24) has an elastic force that drives the first lever arm (21) and the second lever arm (23) to approach each other.

3. The dual locking fastener of claim 1, wherein, The spring plate (26) has an elastic force that drives the locking teeth (251) away from the limiting tooth groove (212). When the latch (22) is engaged in the latch groove (11), the pressing ball head (331) abuts against the locking block (25) and overcomes the elastic force of the spring plate (26) to drive the locking teeth (251) to engage with the limiting tooth groove (212).

4. The dual locking fastener of claim 1, wherein, Both substrate one (1) and substrate two (4) are fixed on two sets of hardware workpieces that need to be fastened.

5. The dual locking fastener of claim 1, wherein, The elastic plate (41) has an elastic force that drives the slot (411) close to the connecting shaft (32).

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