Buckle with fastening function

Abstract

The utility model relates to the field of buckles, in particular to a buckle with a fastening function, which comprises a buckle shell and a buckle tongue, elastic locking arms are arranged at the left end and the right end of the buckle tongue, locking grooves matched with the elastic locking arms are arranged at the left end and the right end of the buckle shell, the elastic locking arms are clamped in the locking grooves, a fastening box is arranged at the upper end of the buckle shell, and a bin door is arranged at one end of the fastening box. First bearing seats are arranged at the top of the fastening box and the bottom of the buckling shell, fastening shafts are rotationally connected into the first bearing seats, straight gears are fixedly connected to the outer walls of the fastening shafts, sliding rails are arranged at the bottom of the buckling shell, sliding blocks are slidably connected to the sliding rails, racks are arranged at the upper ends of the sliding blocks, and the racks are connected with the straight gears in an engaged mode; by means of the linkage design of the fastening shaft and the adjusting shaft, a user can rotate the rotary knob to enable the fastening plate to move stably, firm fastening or loosening of the buckle tongue and the buckle shell is achieved, and compared with a traditional buckle without a fastening function, safety is improved, and the buckle tongue is effectively prevented from being bounced off accidentally.

Description

Technical Field

[0001] This utility model relates to the field of buckles, and in particular to buckles with built-in fastening function. Background Technology

[0002] Among numerous industrial products and daily necessities, buckles are a common connecting component, widely used in various scenarios requiring quick connection and disassembly. Traditional buckle structures only have a simple fastening function, mainly consisting of a buckle shell and a buckle tongue. The buckle tongue achieves connection by engaging with the locking groove on the buckle shell through an elastic locking arm.

[0003] The fastening effect of traditional buckles mainly relies on the interlocking between the elastic locking arm and the locking groove. However, during use, due to external impacts and vibrations, the elastic locking arm is prone to fatigue and loss of elasticity, resulting in a decrease in the tightness of the interlocking. For example, in the connection of automotive interior parts, the vibration generated during vehicle operation may cause the elastic locking arm of the buckle to gradually loosen. In addition, because traditional buckles lack effective fastening measures, the buckle tongue is prone to accidentally popping open when subjected to large external pulling or collisions, thus causing safety hazards. Utility Model Content

[0004] In order to overcome the problem that traditional buckles are prone to fatigue and loosening due to the elastic locking arm and lack of effective fastening measures, the buckle tongue is prone to accidentally popping open when subjected to external impact, vibration or pulling, causing safety hazards.

[0005] The technical solution of this utility model is as follows: a buckle with a built-in fastening function, including a buckle shell and a buckle tongue. Elastic locking arms are provided at both ends of the buckle tongue. Locking grooves adapted to the elastic locking arms are opened at both ends of the buckle shell, and the elastic locking arms are engaged in the locking grooves. A fastening box is provided at the upper end of the buckle shell, and a door is provided at one end of the fastening box. A bearing seat is provided at the top of the fastening box and the bottom of the buckle shell. A fastening shaft is rotatably connected inside the bearing seat. A spur gear is fixedly connected to the outer wall of the fastening shaft. A slide rail is provided at the bottom of the buckle shell, and a slider is slidably connected on the slide rail. A rack is provided at the upper end of the slider, and the rack meshes with the spur gear. A fastening plate is provided at the end of the rack facing the elastic locking arm. A second bearing seat is provided on the inner wall of the fastening box, and an adjusting shaft is rotatably connected inside the second bearing seat. One end of the adjusting shaft extends to the outside of the fastening box and is provided with a knob. A worm is concentrically provided on the outer wall of the adjusting shaft, and a worm wheel is fixedly connected to the outer wall of the fastening shaft. The worm and the worm wheel mesh with each other.

[0006] Preferably, the end face of the fastening plate is provided with a limit post, and the surface of the elastic locking arm is provided with a limit hole that matches the limit post, and the limit post is inserted into the limit hole.

[0007] Preferably, the limiting post and the limiting hole are equipped with matching magnets, and the limiting post and the limiting hole are magnetically connected.

[0008] Preferably, limit blocks are provided at both ends of the slide rail, and a rubber sheet is provided at the end of the limit block facing the slider.

[0009] Preferably, the outer side of the elastic locking arm is provided with a guide slope that is adapted to the buckle shell.

[0010] Preferably, the compartment door and the fastening box are connected by a hinge, and the compartment door is provided with a latch to secure the compartment door in the closed state.

[0011] Preferably, the knob surface is provided with a rubber sheet, and the surface of the rubber sheet is provided with anti-slip protrusions.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the linkage design of the fastening shaft and the adjusting shaft, the user only needs to rotate the knob to make the fastening plate move smoothly closer to or away from the elastic locking arm, thus realizing the secure fastening or loosening of the latch and the latch shell. Compared with those traditional buckles that do not have a fastening function, the safety of the buckle is improved and the latch is effectively prevented from accidentally popping open due to external force or vibration during use.

[0014] 2. The limiting post can be precisely inserted into the limiting hole of the elastic locking arm, playing a role in positioning and fixing, ensuring that the fastening plate will not shift during the fastening process. At the same time, the magnetic attraction between the limiting post and the magnet set in the limiting hole further enhances the connection stability between the two. Attached Figure Description

[0015] Figure 1 The diagram shown is a first three-dimensional structural schematic of this utility model;

[0016] Figure 2 The diagram shown is a second three-dimensional structural schematic of this utility model;

[0017] Figure 3 The diagram shown is a first three-dimensional structural schematic of the rack and spur gear of this utility model;

[0018] Figure 4 The diagram shown is a second three-dimensional structural schematic of the rack and spur gear of this utility model;

[0019] Figure 5 The diagram shown is a three-dimensional structural schematic of the worm and worm wheel of this utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Buckle shell; 2. Buckle tongue; 3. Elastic locking arm; 4. Lock groove; 5. Fastening box; 6. Door; 7. Bearing seat No. 1; 8. Fastening shaft; 9. Spur gear; 10. Slide rail; 11. Slider; 12. Rack; 13. Fastening plate; 14. Bearing seat No. 2; 15. Adjusting shaft; 16. Knob; 17. Worm gear; 18. Worm wheel; 19. Limiting post; 20. Limiting hole; 21. Limiting block; 22. Guide slope. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figure 1 - Figure 5This utility model provides an embodiment of a buckle with a built-in fastening function, comprising a buckle shell 1 and a buckle tongue 2. Elastic locking arms 3 are provided at both ends of the buckle tongue 2. Locking grooves 4 adapted to the elastic locking arms 3 are provided at both ends of the buckle shell 1, and the elastic locking arms 3 are engaged within the locking grooves 4. A fastening box 5 is provided at the upper end of the buckle shell 1, and a door 6 is provided at one end of the fastening box 5. A first bearing seat 7 is provided at the top of the fastening box 5 and the bottom of the buckle shell 1. A fastening shaft 8 is rotatably connected within the first bearing seat 7, and a spur gear 9 is fixedly connected to the outer wall of the fastening shaft 8. A buckle is provided at the bottom of the buckle shell 1. A slide rail 10 is provided, on which a slider 11 is slidably connected. A rack 12 is provided at the upper end of the slider 11, and the rack 12 meshes with a spur gear 9. A fastening plate 13 is provided at the end of the rack 12 facing the elastic locking arm 3. A second bearing seat 14 is provided on the inner wall of the fastening box 5. An adjusting shaft 15 is rotatably connected inside the second bearing seat 14. One end of the adjusting shaft 15 extends to the outside of the fastening box 5 and is provided with a knob 16. A worm gear 17 is concentrically provided on the outer wall of the adjusting shaft 15. A worm wheel 18 is fixedly connected to the outer wall of the fastening shaft 8. The worm gear 17 and the worm wheel 18 mesh with each other. The buckle housing 1, as the main body of the buckle, provides space for the insertion and fixation of the buckle tongue 2. Locking grooves 4 are provided at both ends of the buckle housing 1 to engage with the elastic locking arms 3 on the buckle tongue 2, thus fixing the buckle tongue 2. Bearing seat 7 is located at the top of the fastening box 5 and the bottom of the buckle housing 1, providing rotational support for the fastening shaft 8. A spur gear 9 is fixedly connected to the outer wall of the fastening shaft 8. Rotating the fastening shaft 8 drives the spur gear 9 to rotate. The spur gear 9 meshes with the rack 12, converting the rotational motion of the fastening shaft 8 into the linear motion of the rack 12. The slide rail 10 provides a sliding track for the slider 11. A rack 12 is provided at the upper end of the slider 11, which achieves linear motion by being guided by the slide rail 10. The fastening plate 13 moves closer to or further away from the elastic locking arm 3 as the rack 12 moves, thereby fastening or loosening the latch 2 and the latch shell 1. The second bearing seat 14 is provided on the inner wall of the fastening box 5 to provide rotational support for the adjusting shaft 15. The knob 16 is located at the outer end of the adjusting shaft 15 and is used to manually rotate the adjusting shaft 15. The worm 17 is meshed with the worm wheel 18 to transmit the rotational motion of the adjusting shaft 15 to the worm wheel 18. The worm wheel 18 achieves the rotation of the fastening shaft 8 by being driven by the worm 17.

[0023] Please see Figure 3 - Figure 5In this embodiment, the end face of the fastening plate 13 is provided with a limiting post 19, and the surface of the elastic locking arm 3 is provided with a limiting hole 20 adapted to the limiting post 19. The limiting post 19 is inserted into the limiting hole 20. The limiting post 19 and the limiting hole 20 are provided with a matching magnet. The limiting post 19 and the limiting hole 20 are magnetically connected. The two ends of the slide rail 10 are provided with limiting blocks 21. The end of the limiting block 21 facing the slider 11 is provided with a rubber sheet. The outer side of the elastic locking arm 3 is provided with a guide slope 22 adapted to the buckle shell 1. The compartment door 6 and the fastening box 5 are connected by a hinge. The compartment door 6 is provided with a latch for fixing the compartment door 6 in the closed state. The surface of the knob 16 is provided with a rubber sheet. The surface of the rubber sheet is provided with anti-slip protrusions. The limiting post 19 is provided on the end face of the fastening plate 13 and is used to insert into the limiting hole 20 of the elastic locking arm 3 to provide positioning and fixing. The function of the magnet is to ensure that the fastening plate 13 will not shift during the fastening process. The magnet enhances the connection stability between the limiting post 19 and the limiting hole 20 through magnetic attraction, preventing easy separation due to external force. The limiting block 21 is set at both ends of the slide rail 10 to prevent the slider 11 from going beyond the range of the slide rail 10, ensuring that the slider 11 slides stably on the slide rail 10. The rubber sheet is used to reduce the impact force when the slider 11 collides with the limiting block 21, preventing damage to the slider 11 and the limiting block 21. The guide slope 22 is set on the outside of the elastic locking arm 3 and is adapted to the inner wall of the buckle shell 1, so that when the buckle tongue 2 is inserted into the buckle shell 1, the elastic locking arm 3 can slide smoothly into the locking groove 4. The rubber skin covers the surface of the knob 16 to provide a comfortable grip. The anti-slip protrusion is set on the surface of the rubber skin to increase the friction of the knob 16 surface and prevent the hand from slipping when rotating.

[0024] Working principle: When the latch 2 is pushed into the latch housing 1, the elastic locking arm 3 can smoothly slide into the locking groove 4. Then, by rotating the knob 16, the adjusting shaft 15 starts to rotate, which in turn drives the worm gear 17 to rotate. Due to the meshing relationship between the worm gear 17 and the worm wheel 18, the worm wheel 18 also rotates, which drives the fastening shaft 8 to rotate. The rotation of the fastening shaft 8 causes the spur gear 9 to start rotating. Through the meshing relationship between the spur gear 9 and the rack 12, the rack 12 starts to move. At the same time, the slider 11 slides on the slide rail 10, which drives the fastening plate 13 to gradually approach the elastic locking arm 3. When the fastening plate 13 approaches to a certain extent, the limiting post 19 on it will accurately insert into the limiting hole 20 on the elastic locking arm 3. In addition, the magnetic attraction of the magnet enhances the connection stability between the limiting post 19 and the limiting hole 20, making them less likely to be easily separated by external force, thereby strengthening the fastening effect of the latch 2.

[0025] Through the above steps, and through the linkage design of the fastening shaft 8 and the adjusting shaft 15, the user can rotate the knob 16 to make the fastening plate 13 move smoothly, so as to achieve the secure fastening or loosening of the latch 2 and the latch shell 1. Compared with the traditional buckle without fastening function, the safety is improved, and the latch 2 is effectively prevented from accidentally popping open. It solves the problem that the traditional buckle is prone to fatigue and loosening due to the elastic locking arm 3 and lacks effective fastening measures. When subjected to external impact, vibration or pulling, the latch 2 is prone to accidentally popping open, causing safety hazards.

Claims

1. A snap fastener with fastening function, comprising a buckle shell (1) and a buckle tongue (2); characterized in that: The left and right ends of the buckle tongue (2) are provided with elastic locking arms (3), the left and right ends of the buckle shell (1) are provided with locking grooves (4) matched with the elastic locking arms (3), the elastic locking arms (3) are clamped in the locking grooves (4), the upper end of the buckle shell (1) is provided with a fastening box (5), one end of the fastening box (5) is provided with a door (6), the top of the fastening box (5) and the bottom of the buckle shell (1) are provided with a first bearing seat (7), the first bearing seat (7) is rotatably connected with a fastening shaft (8), the outer wall of the fastening shaft (8) is fixedly connected with a straight gear (9), the bottom of the buckle shell (1) is provided with a sliding rail (10), the sliding rail (10) is slidably connected with a sliding block (11), the upper end of the sliding block (11) is provided with a rack (12), the rack (12) is meshingly connected with the straight gear (9), one end of the rack (12) facing the elastic locking arm (3) is provided with a fastening plate (13), the inner wall of the fastening box (5) is provided with a second bearing seat (14), the second bearing seat (14) is rotatably connected with an adjusting shaft (15), one end of the adjusting shaft (15) extends to the outside of the fastening box (5) and is provided with a knob (16), the outer wall of the adjusting shaft (15) is concentrically provided with a worm (17), the outer wall of the fastening shaft (8) is fixedly connected with a worm wheel (18), the worm (17) is meshingly connected with the worm wheel (18).

2. The self-fastening carabiner of claim 1, wherein: The end face of the fastening plate (13) is provided with a limiting column (19), the surface of the elastic locking arm (3) is provided with a limiting hole (20) matched with the limiting column (19), and the limiting column (19) is inserted into the limiting hole (20).

3. The self-fastening carabiner of claim 2, wherein: The limiting column (19) and the limiting hole (20) are provided with matched magnets, and the limiting column (19) and the limiting hole (20) are magnetically connected.

4. The self-fastening functional buckle according to claim 3, wherein: The both ends of the sliding rail (10) are provided with limiting blocks (21), and one end of the limiting block (21) facing the sliding block (11) is provided with a rubber sheet.

5. The self-fastening carabiner of claim 4, wherein: The outer side of the elastic locking arm (3) is provided with a guide inclined surface (22) matched with the buckle shell (1).

6. The self-fastening carabiner of claim 5, wherein: The door (6) and the fastening box (5) are connected through a hinge, and the door (6) is provided with a lock for fixing the closed state of the door (6).

7. The self-fastening carabiner of claim 6, wherein: The surface of the knob (16) is provided with a rubber skin, and the surface of the rubber skin is provided with anti-skid protrusions.

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