Quick connector for drill bit

Abstract

The utility model discloses a quick connector for a drill bit, which comprises a tightness button which comprises a limiting cylinder and a cap, and the side surface of the limiting cylinder is provided with a locking surface which is limited with the tangent plane of the head of the drill bit; one end of the connector body is provided with a connecting hole used for insertion connection of a drill bit, the side face of the connector body is provided with a button hole used for installation of a tightness button, the button hole comprises a cap hole matched with the cap and a column hole matched with the limiting column body, and the column hole extends to the side face of the connecting hole and communicates with the connecting hole; the reset elastic piece is arranged between the tightness button and the button hole; and the locking mechanism is used for limiting the stroke of the elastic button in the button hole and limiting the elastic button from popping out of the button hole. Compared with a traditional screw fixing mode, the elastic button is adopted for rapid disassembly and assembly, and the process of replacing the drill bit is greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit connecting technical field, concretely is a drill bit quick connector. BACKGROUND

[0002] In the field of wall hole opener or mechanical processing, drill bit is a commonly used tool, mainly used for drilling on wall body or material. The traditional drill bit is usually connected with the joint of power tool (such as electric drill) through screw (such as the drill bit connecting structure disclosed in the application number 2024101505280). Although this connection mode is simple in structure, it has obvious shortcomings. First, during operation, especially when using equipment with strong vibration, the screw is easy to loosen gradually due to vibration, which makes the connection between the drill bit and the power tool unstable, affects the working efficiency and processing accuracy, and even may cause safety accidents. Secondly, when different specifications or types of drill bits need to be replaced, the disassembly and installation process is relatively cumbersome and time-consuming, which is undoubtedly an unfavorable factor for modern industry pursuing efficient production.

[0003] In order to solve the above problems, various design schemes of quick replacement drill bit appear in the market, aiming at simplifying the replacement process and improving stability. However, these designs are either high in cost and complex in structure, not suitable for wide application scenarios, or their fixing effect is still not ideal, especially in high-strength working environment. For example, the structure of using spring and steel ball to limit and fix the drill bit, due to the insufficient contact surface between the steel ball and the drill bit, in the environment of high speed and high pressure work of the drill bit, it is easy to lose its limiting and fixing effect, resulting in the drill bit falling off. Therefore, it is an urgent need in the industry to develop a drill bit connecting device that can ensure the connection strength and facilitate quick replacement.

[0004] The present application is put forward based on this background, aiming at providing a drill bit quick connector which is convenient for drill bit disassembly and installation and stable and reliable in connection. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies in the background art, the utility model provides a drill bit quick connector.

[0006] The technical scheme adopted by the utility model is: a drill bit quick connector, comprising:

[0007] The tension button comprises a limiting column body and a cap, the side surface of the limiting column body has a locking surface for limiting the cutting surface of the drill bit head;

[0008] The joint body is provided with a connecting hole for connecting the drill bit at one end, and a button hole for mounting the elastic button on the side surface of the joint body, the button hole comprises a cap hole matched with the cap and a column hole matched with the limiting column, the column hole extends to the side surface of the connecting hole and communicates with the connecting hole, and the locking surface is located on one side of the connecting hole;

[0009] A reset elastic member is arranged between the elastic button and the button hole, and the reset elastic member has an elastic force for ejecting the elastic button from the button hole;

[0010] A locking mechanism is arranged for limiting the stroke of the elastic button in the button hole and limiting the ejection of the elastic button from the button hole.

[0011] Further, the locking surface comprises an upper arc segment at one end of the cap, an action inclined surface segment connected with the upper arc segment, and a lower arc segment at the bottom, and the action inclined surface segment is arranged obliquely to one side of the connecting hole.

[0012] Further, the inclination angle a of the action inclined surface segment with the vertical direction is 5-15°.

[0013] Further, the bottom of the column hole and the bottom of the cap hole are provided with spring holes, the limiting column is provided with a positioning spring hole, and the reset elastic member is located in the spring hole.

[0014] Further, the reset elastic member is a spring.

[0015] Further, the joint body on the outer circle of the connecting hole is provided with external threads.

[0016] Further, the locking mechanism comprises a limiting long slot arranged on the side surface of the limiting column and a limiting screw threadedly connected with a screw hole on the joint body, and the top part of the limiting screw extends into the limiting long slot.

[0017] Further, the joint body away from one end of the connecting hole is provided with an internal screw hole.

[0018] Further, the screw hole is arranged on the bottom wall of the internal screw hole.

[0019] Further, clamping cutting surfaces are arranged on both sides of the joint body.

[0020] The utility model discloses the beneficial effects are:

[0021] 1. Convenient to disassemble and assemble: compared with the traditional screw fixing mode, the elastic button is used for quick disassembly and assembly, and the process of replacing the drill bit is greatly simplified. Users only need to press the elastic button slightly to realize the installation or removal of the drill bit, without using additional tools, and the working efficiency is improved significantly.

[0022] 2. Connection stability: By setting the limiting column and the reset elastic element, and at the same time setting the locking surface on the limiting column and the cutting surface of the drill bit head for limiting, the drill bit can remain stable during the working process and is not easy to loosen due to vibration.

[0023] 3. Wide application range: The quick connector is suitable for drill bits of various specifications, has strong compatibility, and meets different operation requirements. Whether it is a family DIY project or a professional industrial production site, it can show good adaptability and practicality.

[0024] 4. Simple structure: Compared with other complex quick replacement systems, the scheme proposed in the application has a relatively simple structure, fewer accessories, low cost, easy mass production and promotion, and has wide practical value.

[0025] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a structural schematic view of the utility model.

[0027] Fig. 2 It is an explosion schematic view of the utility model.

[0028] Fig. 3 It is a structural schematic view of the connector main body.

[0029] Fig. 4 It is a structural schematic view of the loose button.

[0030] Fig. 5 It is a side view of the loose button.

[0031] Fig. 6 It is a drill bit connected with the quick connector of the application.

[0032] Figs. 1-6 1, loose button; 2, limiting column; 3, cap; 4, locking surface; 5, connector main body; 6, connecting hole; 7, button hole; 8, cap hole; 9, column hole; 10, reset elastic element; 11, upper arc segment; 12, acting inclined surface segment; 13, lower arc segment; 14, spring hole; 15, positioning spring hole; 16, external thread; 17, limiting long groove; 18, limiting screw; 19, screw hole; 20, internal screw hole; 21, clamping cutting surface. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0034] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, and the like), the directional indications are only used to explain the relative positional relationship, movement condition, and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

[0035] The utility model provides a drill quick connector.

[0036] In the embodiment, referring to Figs. 1-6 The drill quick connector comprises:

[0037] The elastic button 1 comprises a limiting column body 2 and a cap 3, the side surface of the limiting column body 2 is provided with a locking surface 4 for limiting the cutting surface of the drill head;

[0038] The connector main body 5 is provided with a connecting hole 6 for connecting the drill at one end, and the side surface of the connector main body is provided with a button hole 7 for installing the elastic button 1, the button hole 7 comprises a cap hole 8 matched with the cap and a column hole 9 matched with the limiting column body, the column hole 9 extends to the side surface of the connecting hole and is communicated with the connecting hole 6, and the locking surface is located at one side of the connecting hole;

[0039] The reset elastic member 10 is arranged between the elastic button and the button hole, and the reset elastic member has an elastic force for ejecting the elastic button out of the button hole;

[0040] The locking mechanism is used for limiting the stroke of the elastic button in the button hole and limiting the elastic button from being ejected out of the button hole.

[0041] In the above technical solution, the elastic button is installed in the button hole, when the drill is installed, the elastic button is pressed, then the drill with the cutting surface is inserted into the connecting hole, and then the elastic button is released, the elastic button is ejected outwards under the elastic force of the reset elastic member. At this time, the installation of the drill is completed, and when the drill is disassembled, the drill can be pulled out only by pressing the elastic button, so that the drill is very convenient to disassemble and assemble.

[0042] When the drill bit is inserted, if the cutting surface of the drill bit is not aligned with the locking surface of the limiting column, the drill bit can be directly manually rotated to align, or when the drill bit is connected with the electric drill to punch, the drill bit rotation can be automatically aligned. Therefore, the connection of the drill bit does not need to align the locking surface and the cutting surface in advance, which further improves the installation efficiency and the convenience of installation.

[0043] In addition, the drill bit is connected by limiting the drill bit cutting surface and the locking surface of the limiting column. When the drill bit rotates, the cutting surface and the locking surface are used as the interaction surface, which has a more stable fixing effect relative to the steel ball limiting, and the fixed connection failure does not occur, which improves the use safety.

[0044] Specifically, the locking surface includes an upper arc segment 11 at one end of the cap, an action inclined surface segment 12 connected with the upper arc segment 11, and a lower arc segment 13 at the bottom, and the action inclined surface segment is inclined to the side of the connecting hole.

[0045] In the above technical solution, the specific shape of the locking surface (including the upper arc segment, the action inclined surface segment, and the lower arc segment) enables the drill bit to be more closely combined with the cutting surface on the drill bit. Especially, the action inclined surface segment is inclined, which directly matches the cutting surface on the drill bit when connected with the drill bit, ensures the stability of the connection of the drill bit, and plays a role in locking and position compensation; the upper arc segment and the lower arc segment are arranged, which is beneficial to guiding the cutting surface of the drill bit to the action inclined surface segment, and is also more beneficial to adjusting the cutting surface and the action inclined surface segment from the non-alignment stage to the alignment stage, and realizing the limiting and fixing.

[0046] Specifically, the inclination angle a of the action inclined surface segment to the vertical direction is 5-15°.

[0047] In the above technical solution, the inclination angle a of the action inclined surface segment to the vertical direction is 5-15°, more specifically 8°, which is more beneficial to adjusting the cutting surface and the action inclined surface segment from the non-alignment stage to the alignment stage, and ensures the stability of the connection.

[0048] Specifically, the bottom of the column hole and the bottom of the cap hole are provided with a spring hole 14, the limiting column is provided with a positioning spring hole 15, and the reset elastic member is located in the spring hole.

[0049] The spring holes are arranged on both sides to ensure the balance of the springs on both sides, avoid the inclination and jamming of the elastic button rebound, and help to realize the automatic rebound function of the elastic button.

[0050] Specifically, the reset elastic member is a spring.

[0051] Using a spring as a reset elastic member can effectively utilize its inherent elastic properties to realize the automatic rebound function of the elastic button, simplify the design of the entire device, and also reduce the cost.

[0052] Specifically, an outer thread 16 is arranged on the joint body of the outer ring of the connecting hole.

[0053] By arranging the outer thread, the connecting hole can be assembled with other components, such as a punch (equivalent to the cylinder in the background technology patent No. 2024101505280).

[0054] Specifically, the locking mechanism includes a limiting long slot 17 arranged on the side of the limiting column 2 and a limiting screw 18 threadedly connected with a screw hole 19 on the joint body, and the top part of the limiting screw extends into the limiting long slot.

[0055] The locking mechanism limits the stroke of the tension button in the button hole, and the stroke is approximately equal to the distance of the limiting long slot, and the tension button can be prevented from being separated from the button hole.

[0056] Specifically, an inner screw hole 20 is arranged on the joint body away from one end of the connecting hole.

[0057] The inner screw hole is used to connect with other components with a screw post, such as a drill bit and a drill connector.

[0058] Specifically, the screw hole 19 is arranged on the bottom wall of the inner screw hole, and clamping sections 21 are arranged on both sides of the joint body 5.

[0059] The clamping sections arranged on both sides of the joint body not only facilitate the use of a wrench or other tools to fasten or release the joint body, but also enhance the structural strength of the joint body and reduce the risk of deformation caused by long-term use.

[0060] Note for all technical personnel: Although the utility model has been described according to the above specific implementation mode, the utility model idea is not limited to this utility model, and any modification using the utility model idea will be included in the protection scope of the patent.

Claims

1. A drill bit quick coupling, characterized by The utility model relates to a drill bit connector, which comprises a button, a connector body, a reset elastic member and a locking mechanism. The button comprises a limiting cylinder and a cap, and the side surface of the limiting cylinder is provided with a locking surface for limiting the cutting surface of the drill bit head. One end of the connector body is provided with a connecting hole for connecting the drill bit, and the side surface of the connector body is provided with a button hole for installing the button. The button hole comprises a cap hole matched with the cap and a cylinder hole matched with the limiting cylinder. The cylinder hole extends to the side surface of the connecting hole and communicates with the connecting hole, and the locking surface is located on one side of the connecting hole.

2. The drill bit quick coupling of claim 1, wherein: The reset elastic member is arranged between the button and the button hole, and has an elastic force for ejecting the button from the button hole.

3. The drill bit quick coupling of claim 2, wherein: The locking mechanism is used for limiting the stroke of the button in the button hole and restricting the ejection of the button from the button hole.

4. The drill bit quick coupling of claim 1, wherein: The locking surface comprises an upper arc segment at one end of the cap, an acting inclined surface segment connected with the upper arc segment and a lower arc segment at the bottom.

5. The drill bit quick coupling of claims 1 or 4, wherein: The acting inclined surface segment is arranged obliquely to one side of the connecting hole.

6. The drill bit quick coupling of claim 1, wherein: The inclination angle a of the acting inclined surface segment with the vertical direction is 5-15°.

7. The drill bit quick coupling of claim 1, wherein: The bottom of the cylinder hole and the bottom of the cap hole are provided with a spring hole, and the limiting cylinder is provided with a positioning spring hole.

8. The drill bit quick coupling of claim 7, wherein: The reset elastic member is a spring.

9. The drill bit quick coupling of claim 8, wherein: The outer thread is arranged on the outer circle of the connecting hole of the connector body.

10. The drill bit quick coupling of claim 1, wherein: The locking mechanism comprises a limiting long slot arranged on the side surface of the limiting cylinder and a limiting screw. After the limiting screw is threadedly connected with the screw hole of the connector body, the top part of the limiting screw extends into the limiting long slot. The inner screw hole is arranged on the connector body away from the connecting hole. The screw hole is arranged on the bottom wall of the inner screw hole. The clamping cutting surface is arranged on both sides of the connector body.

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