Button anti-falling structure of drill bit quick connector

Abstract

The utility model discloses a button anti-falling structure of a drill bit quick connector, which relates to the technical field of drill bit quick connectors and comprises a connector main body, a tightness button and a locking mechanism. A button hole for mounting a tightness button is formed in the side surface of the connector main body; the locking mechanism is installed in the installation cavity of the tightness button and comprises an opening elastic piece and locking pieces on the two sides, the opening elastic piece provides elastic force for the locking pieces to pop out, and stroke grooves matched with the locking pieces are formed in the side wall of the button hole. According to the structure, a traditional screwing screw is replaced by the locking mechanism, the stroke of the loosening and tightening button can be stably limited, part loosening or button popping caused by vibration is avoided, and the structural reliability and the use safety are improved; and the locking mechanism is integrated on the tightening button, additional screw hole machining and screw assembling are not needed, the structure is simplified, and the production and assembly difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drill bit quick coupling technology, specifically to a button anti-disengagement structure for a drill bit quick coupling. Background Technology

[0002] In machining, construction, and other fields, drill bits are commonly used cutting tools and require quick couplings to connect and disconnect from drive equipment (such as electric drills and drilling rigs) to improve work efficiency. Drill bit quick couplings typically consist of a coupling body and a tension button. One end of the coupling body has a connection hole for inserting the drill bit, and the side has a button hole for installing the tension button. Pressing the tension button controls the tightness of the clamping structure within the connection hole, thus completing the installation and removal of the drill bit.

[0003] To ensure stable pressing of the tension / release button and prevent it from detaching from the button hole, existing technologies employ a travel groove 26 (limiting groove) on the side of the tension / release button and a screw 27 screwed onto the connector body. The screw end is then pressed against the travel groove to limit the pressing travel of the tension / release button within the button hole, as disclosed in a drill bit quick connector application number 2024224252253. However, in actual use, the drive equipment generates continuous vibration during drill operation. This vibration can easily cause the screw to loosen or even detach from the connector body. Once the screw loosens or falls off, not only will the limitation on the tension / release button's travel be lost, leading to uncontrolled button pressing, but the tension / release button may also pop out of the button hole, rendering the quick connector unusable and seriously affecting operational safety and continuity. Therefore, improvements to the existing travel limitation and anti-detachment structure of the tension / release button are urgently needed. Utility Model Content

[0004] To address the shortcomings in the prior art, this utility model provides a button anti-dislodgement structure for a drill bit quick connector.

[0005] The technical solution adopted by this utility model is: a button anti-dislodgement structure for a drill bit quick connector, including a connector body and a tension button. One end of the connector body is provided with a connection hole for inserting and connecting the drill bit. The side of the connector body is provided with a button hole for installing the tension button. It also includes a locking mechanism for limiting the travel of the tension button in the button hole and restricting the tension button from popping out of the button hole. The locking mechanism is installed in the mounting cavity on the tension button. The locking mechanism includes a spreading elastic member and locking plates located on both sides of the spreading elastic member. The spreading elastic member provides elastic force for the locking plates to pop out of the mounting cavity. The side wall of the button hole is provided with a travel groove that matches the locking plates.

[0006] Furthermore, a positioning groove is provided at the middle of the end of the locking piece to connect with the spreading elastic element.

[0007] Furthermore, the spreading elastic element is a helical spring, and the mounting cavity has a spring cavity in the middle that is adapted to the helical spring.

[0008] Furthermore, the tension button includes a limiting post and a cap. The side of the limiting post has a locking surface that limits the cutting surface of the drill bit head, and the mounting cavity is disposed on the cap.

[0009] Furthermore, it also includes a reset elastic element. The button hole includes a cap hole adapted to the cap and a post hole adapted to the limiting post. The post hole extends to the side of the connecting hole and communicates with the connecting hole. The locking surface is located on one side of the connecting hole. The reset elastic element is disposed between the tension button and the button hole. The reset elastic element has an elastic force that ejects the tension button from the button hole.

[0010] Furthermore, the reset elastic element includes a first spring located between the limiting post and the bottom wall of the post hole, and a second spring located between the cap and the cap hole;

[0011] The limiting column and the bottom wall of the column hole are provided with a first connecting hole for connecting with the first spring;

[0012] The cap is provided with a spring post for connecting to one end of the second spring, and the bottom wall of the cap hole is provided with a second connecting hole for connecting to the other end of the second spring.

[0013] Furthermore, the locking surface includes an upper guide section located at one end of the cap, an inclined section connected to the upper guide section, and a lower arc-shaped section at the bottom, wherein the inclined section is inclined toward the connecting hole side.

[0014] Furthermore, the angle α between the inclined plane segment and the vertical direction is 5-15°.

[0015] The beneficial effects of this utility model are:

[0016] 1. Effectively prevents loosening: The locking mechanism, which uses an elastic element to engage with a locking plate, replaces the traditional screw structure. After the elastic element and locking plate are installed into the mounting cavity of the tension button, the tension button is then installed into the button hole. The travel groove on the side wall of the button hole prevents the locking plate from popping out and limits its travel displacement. This structure effectively prevents the locking mechanism from loosening or falling off due to vibration, stably limits the travel of the tension button, and ensures structural reliability.

[0017] 2. Improve safety: Prevent the tightening button from popping out due to screw failure, ensure the quick connector works continuously during operation, and avoid affecting the safety and continuity of operation due to component failure.

[0018] 3. Simplified structure and assembly: The locking mechanism is integrated into the mounting cavity of the tightening button, eliminating the need to machine screw holes and assembly screws on the connector body, simplifying the overall structure and reducing production and assembly difficulty.

[0019] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded view of the present invention.

[0023] Figure 3 This is a side view of the tension / release button.

[0024] Figure 4 This is a schematic diagram of the locking mechanism.

[0025] Figure 5 This is a structural diagram of the tension / release button from another perspective.

[0026] Figure 6 This is a schematic diagram of the main body of the connector.

[0027] Figure 7 This is a schematic diagram of the structure of a quick connector in the prior art.

[0028] Figure 8 This is a schematic diagram of the drill bit structure.

[0029] Figure 1-8 In the middle: 1. Connector body; 2. Tightening button; 3. Connecting hole; 4. Button hole; 5. Mounting cavity; 6. Spreading elastic element; 7. Locking plate; 8. Stroke groove; 9. Positioning groove; 10. Spring cavity; 11. Limiting post; 12. Cap; 13. Drill bit; 14. Cut surface; 15. Locking surface; 16. Cap hole; 17. Post hole; 18. First spring; 19. Second spring; 20. First connecting hole; 21. Spring post; 22. Second connecting hole; 23. Upper guide section; 24. Acting inclined section; 25. Lower arc section; 26. Stroke groove; 27. Screw. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] This utility model provides a button anti-dislodgement structure for a drill bit quick connector.

[0033] In this embodiment, refer to Figure 1-8 The drill bit quick connector's button anti-dislodgement structure includes a connector body 1 and a tension button 2. One end of the connector body is provided with a connection hole 3 for drill bit insertion and connection. The side of the connector body 1 is provided with a button hole 4 for installing the tension button. It also includes a locking mechanism for limiting the travel of the tension button in the button hole and preventing the tension button from popping out of the button hole. The locking mechanism is installed in the mounting cavity 5 on the tension button. The locking mechanism includes a spreading elastic element 6 and locking plates 7 located on both sides of the spreading elastic element. The spreading elastic element 6 provides elastic force for the locking plates to pop out of the mounting cavity. The side wall of the button hole is provided with a travel groove 8 that matches the locking plates.

[0034] In the above technical solution, a spring-loaded element and two locking plates are built into the mounting cavity of the tension button. The spring-loaded element provides elastic force to make the locking plates pop out and fit into the travel groove on the side wall of the button hole. When the locking plates slide along the groove, they limit the button travel, and the edges at the upper and lower ends of the travel groove limit the locking plate travel. This replaces the easily loosened screw structure, achieves stable limitation of button travel and prevents dislodgement, improves structural reliability under vibration, and avoids button malfunction affecting use.

[0035] Specifically, the locking piece has a positioning groove 9 at the middle of its end that connects to the elastic member.

[0036] In this embodiment, a positioning groove 9 is provided at the end of the locking piece, and the end of the elastic element is inserted into the groove to achieve precise positioning and connection between the elastic element and the locking piece, preventing relative displacement between the two.

[0037] Specifically, the spreading elastic element is a helical spring, and the mounting cavity has a spring cavity 10 adapted to the helical spring.

[0038] In this embodiment, a spring-fitting cavity is provided in the middle of the mounting cavity, and the spring is embedded in the cavity for fixation, providing symmetrical and continuous opening elastic force for the locking plates on both sides.

[0039] Specifically, the tension button includes a limiting post 11 and a cap 12. The side of the limiting post has a locking surface 15 that limits the cutting surface 14 of the drill bit 13 head. The mounting cavity is disposed on the cap.

[0040] In this embodiment, the tension button is divided into a limiting post and a cap. The cap has a mounting cavity to integrate the locking mechanism. When the button is pressed, the locking surface can loosen or clamp the drill bit. When locked, the locking surface on the side of the limiting post fits against the cut surface of the drill bit head.

[0041] Specifically, it also includes a reset elastic element. The button hole includes a cap hole 16 adapted to the cap and a post hole 17 adapted to the limiting post. The post hole extends to the side of the connecting hole and communicates with the connecting hole. The locking surface is located on one side of the connecting hole. The reset elastic element is disposed between the tension button and the button hole. The reset elastic element has an elastic force that ejects the tension button from the button hole.

[0042] In this embodiment, when installing the drill bit, press and hold the tension button, then insert the cut end of the drill bit into the connecting hole, and then release the tension button. The tension button will pop outward under the elastic force of the reset elastic element. At this point, the installation of the drill bit is complete. When disassembling, simply press and hold the tension button to pull out the drill bit, making disassembly and assembly very convenient.

[0043] When inserting the drill bit, if the cut surface of the drill bit is not aligned with the locking surface of the limiting post, you can manually rotate the drill bit to align it, or when connecting it to an electric drill for drilling, the drill bit will automatically align itself by rotating. Therefore, there is no need to pre-align the locking surface and the cut surface before installing the drill bit, further improving installation efficiency and convenience.

[0044] In addition, the drill bit uses the cutting surface of the drill bit and the locking surface of the limiting post for limiting connection. When the drill bit rotates, the cutting surface and the locking surface are the interaction surfaces, which has a more stable fixing effect than steel ball limiting, and will not cause the fixing connection to fail, thus improving the safety of use.

[0045] Specifically, the reset elastic element includes a first spring 18 located between the limiting post and the bottom wall of the post hole, and a second spring 19 located between the cap and the cap hole;

[0046] The limiting column and the bottom wall of the column hole are provided with a first connecting hole 20 for connecting with the first spring;

[0047] The cap is provided with a spring post 21 for connecting to one end of the second spring, and the bottom wall of the cap hole is provided with a second connecting hole 22 for connecting to the other end of the second spring.

[0048] In this embodiment, the reset elastic element includes a first spring (between the limiting post and the bottom wall of the post hole) and a second spring (between the cap and the cap hole); the first connecting hole positions the first spring, and the spring post and the second connecting hole position the second spring. The two springs are arranged on both sides to provide reset elastic force in a coordinated manner. The dual-spring design enhances the stability of the reset elastic force; each spring is precisely positioned through the hole / post to prevent spring displacement and further improve the reliability of button reset.

[0049] Specifically, the locking surface includes an upper guide section 23 located at one end of the cap, an inclined surface section 24 connected to the upper guide section 23, and a lower arc-shaped section 25 at the bottom, wherein the inclined surface section is inclined toward the connecting hole side.

[0050] In this embodiment, the specific shape of the locking surface (including the upper guide section, the inclined surface section, and the lower arc section) allows the drill bit to engage more tightly with the cut surface on the drill bit. In particular, the inclined surface section directly fits into the cut surface on the drill bit when connected, ensuring the connection stability of the drill bit and playing a role in locking and position compensation. The upper guide section and the lower arc section facilitate guiding the cut surface of the drill bit to the inclined surface section, and also facilitate the adjustment of the cut surface and the inclined surface section from the misalignment stage to the alignment stage, achieving limit fixation.

[0051] Specifically, the angle α between the inclined plane segment and the vertical direction is 5-15°.

[0052] In this embodiment, the inclination angle α between the inclined surface segment and the vertical direction is 5-15°, more specifically 8°, which is more conducive to adjusting the cross-section and the inclined surface segment from the misalignment stage to the alignment stage, ensuring connection stability.

[0053] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A button anti-disengagement structure for a drill bit quick connector, comprising a connector body and a tension button, wherein one end of the connector body is provided with a connection hole for drill bit insertion and connection, and the side of the connector body is provided with a button hole for mounting the tension button, characterized in that: It also includes a locking mechanism for limiting the travel of the tension button within the button hole and restricting the tension button from popping out of the button hole. The locking mechanism is installed in the mounting cavity on the tension button. The locking mechanism includes a spreading elastic member and locking plates located on both sides of the spreading elastic member. The spreading elastic member provides elastic force for the locking plates to pop out of the mounting cavity. The side wall of the button hole is provided with a travel groove that matches the locking plates.

2. The button anti-disengagement structure of the drill bit quick connector according to claim 1, characterized in that: The locking plate has a positioning groove at the middle of its end that connects to the elastic member.

3. The button anti-disengagement structure of the drill bit quick connector according to claim 1, characterized in that: The elastic element is a helical spring, and the mounting cavity has a spring cavity in the middle that is adapted to the helical spring.

4. The button anti-disengagement structure of the drill bit quick connector according to claim 1, characterized in that: The tension / relaxation button includes a limiting post and a cap. The side of the limiting post has a locking surface that limits the movement of the drill bit head. The mounting cavity is located on the cap.

5. The button anti-disengagement structure of the drill bit quick connector according to claim 4, characterized in that: It also includes a reset elastic element. The button hole includes a cap hole adapted to the cap and a post hole adapted to the limiting post. The post hole extends to the side of the connecting hole and communicates with the connecting hole. The locking surface is located on one side of the connecting hole. The reset elastic element is disposed between the tension button and the button hole. The reset elastic element has an elastic force that ejects the tension button from the button hole.

6. The button anti-disengagement structure of the drill bit quick connector according to claim 5, characterized in that: The reset elastic element includes a first spring located between the limiting post and the bottom wall of the post hole, and a second spring located between the cap and the cap hole; The limiting column and the bottom wall of the column hole are provided with a first connecting hole for connecting with the first spring; The cap is provided with a spring post for connecting to one end of the second spring, and the bottom wall of the cap hole is provided with a second connecting hole for connecting to the other end of the second spring.

7. The button anti-disengagement structure of the drill bit quick connector according to claim 6, characterized in that: The locking surface includes an upper guide section located at one end of the cap, an inclined section connected to the upper guide section, and a lower arc-shaped section at the bottom. The inclined section is inclined toward the connecting hole.

8. The button anti-disengagement structure of the drill bit quick connector according to claim 7, characterized in that: The angle of inclination α between the inclined plane segment and the vertical direction is 5-15°.

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