WO2024036484A1

WO2024036484A1 - Drill chuck and power tool

Info

Publication number: WO2024036484A1
Application number: PCT/CN2022/112813
Authority: WO
Inventors: 柳尧亭
Original assignee: 福比特精工科技有限公司
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2024-02-22

Abstract

A drill chuck and a power tool. In the drill chuck, a front body is provided with a plurality of clamping jaw grooves (102), and the plurality of clamping jaw grooves are uniformly distributed in an axial direction of the front body (103), such that after clamping jaws (100) are installed, the clamping jaws can easily apply uniform force to a drilling tool, thereby ensuring the stability and safety in the process of using the drilling tool. The directions of the guiding of the clamping jaw grooves are radially set along the front body, such that the plurality of clamping jaws can be driven by a rear body (104) to directionally move under the limitation of the corresponding clamping jaw grooves, and radial movement of the clamping jaws along the front body is conducive to widening the range of diameter of the drilling tool that matches the drill chuck and shortening the lengths of the clamping jaws, and thus helps to reduce the overall axial length of the drill chuck.

Description

钻夹头及动力工具Drill chucks and power tools

技术领域Technical field

本公开涉及机械加工技术领域，更具体地说，是涉及一种钻夹头及动力工具。The present disclosure relates to the field of machining technology, and more specifically, to a drill chuck and a power tool.

背景技术Background technique

钻夹头是机械加工和电动工具不可缺少的夹具。钻夹头的作用，是在机械加工当中或是电动工具当中，作为夹具以夹持钻具(钻具可以是钻头、丝锥等)进行工作。钻夹头的尺寸规格一般较小，其便于与动力轴之间相拆卸，并且与大型夹具相比，其成本相对较低。钻夹头主要有三类，分别是手紧钻夹头、扳手钻夹头和自紧钻夹头等；发明人发现，钻夹头的夹爪多通过后体实现对其驱动，使夹爪沿钻夹头的轴向移动，这样使得钻夹头整体的长度较长；另外，其还限制了钻夹头能够安装的钻具的最大直径，使得钻夹头适用的钻具的直径范围较小。Drill chuck is an indispensable fixture for machining and power tools. The function of the drill chuck is to serve as a fixture to hold drilling tools (drilling tools can be drill bits, taps, etc.) during mechanical processing or power tools. The size of the drill chuck is generally small, which is easy to disassemble from the power shaft, and its cost is relatively low compared with large clamps. There are three main types of drill chucks, namely hand-tightening drill chucks, wrench drill chucks, and self-tightening drill chucks. The inventor found that the jaws of a drill chuck are mostly driven through the rear body, so that the jaws move along the drill chuck. The axial movement of the head makes the overall length of the drill chuck longer; in addition, it also limits the maximum diameter of the drill tools that the drill chuck can be installed, making the diameter range of the drill tools suitable for the drill chuck smaller.

需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。It should be noted that the information disclosed in the above background section is only used to enhance understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.

技术问题technical problem

本公开实施例的目的在于提供一种钻夹头及动力工具，旨在解决发明人发现的钻夹头的夹爪多通过后体实现对其驱动，使夹爪沿钻夹头的轴向移动，这样使得钻夹头整体的长度较长；另外，其还限制了钻夹头能够安装的钻具的最大直径，使得钻夹头适用的钻具的直径范围较小的技术问题。The purpose of the disclosed embodiments is to provide a drill chuck and a power tool, aiming to solve the problem discovered by the inventor that the clamping jaws of the drill chuck are mostly driven through the rear body, so that the clamping jaws move along the axial direction of the drill chuck. , which makes the overall length of the drill chuck longer; in addition, it also limits the maximum diameter of the drill tools that the drill chuck can be installed, making the drill chuck suitable for a smaller diameter range of drill tools.

技术解决方案Technical solutions

本公开采用的技术方案是：提供一种钻夹头，其包括：The technical solution adopted by this disclosure is to provide a drill chuck, which includes:

夹爪，所述夹爪的数量为多个；Clamps, the number of the clamps is multiple;

前体，所述前体设置有多个夹爪槽，多个所述夹爪槽绕所述前体的轴线均匀分布，所述夹爪槽的导向方向沿第一方向设置，所述第一方向垂直于所述前体的轴线，所述夹爪滑动限位于所述夹爪槽中；以及The precursor is provided with a plurality of clamping claw grooves, the plurality of clamping claw grooves are evenly distributed around the axis of the precursor, the guiding direction of the clamping claw grooves is arranged along the first direction, and the first The direction is perpendicular to the axis of the front body, and the jaw sliding is limited in the jaw groove; and

后体，所述后体用于驱动所述夹爪在所述夹爪槽中沿第一方向移动，以使所述夹爪能够远离或靠近所述前体的轴线。The rear body is used to drive the clamping jaw to move in the first direction in the clamping jaw slot so that the clamping jaw can move away from or approach the axis of the front body.

进一步地，所述的钻夹头还包括离合组件，所述离合组件被配置为使所述前体与所述后体之间能够保持相对固定或使所述前体与所述后体之间能够发生相对转动。Further, the drill chuck further includes a clutch assembly, and the clutch assembly is configured to maintain a relative fixation between the front body and the rear body or to maintain a relative fixation between the front body and the rear body. capable of relative rotation.

进一步地，所述第一方向平行于所述前体的径向方向，所述夹爪槽的导向方向与所述前体的径向平行；所述夹爪的一端面具有第一平面螺纹，所述后体的一端面具有与所述第一平面螺纹相配合的第二平面螺纹，以在所述后体相对于所述前体转动时，使得所述夹爪能够沿第一方向移动。Further, the first direction is parallel to the radial direction of the precursor, and the guide direction of the clamping claw groove is parallel to the radial direction of the precursor; one end surface of the clamping claw has a first plane thread, One end surface of the rear body has a second plane thread that matches the first plane thread, so that when the rear body rotates relative to the front body, the clamping jaw can move in the first direction.

进一步地，所述第一平面螺纹为平面矩形螺纹，所述第二平面螺纹为平面矩形螺纹。Further, the first plane thread is a plane rectangular thread, and the second plane thread is a plane rectangular thread.

进一步地，所述的钻夹头还包括端盖，所述端盖与所述前体的一端的端面固定连接，所述前体具有轴向容纳孔，所述后体通过所述端盖限位于所述轴向容纳孔中，所述端盖具有第一通孔，所述后体相对的另一端穿过所述第一通孔。Further, the drill chuck further includes an end cover, the end cover is fixedly connected to the end surface of one end of the front body, the front body has an axial receiving hole, and the rear body is limited by the end cover. Located in the axial receiving hole, the end cap has a first through hole, and the opposite end of the rear body passes through the first through hole.

进一步地，所述后体具有第一轴肩，所述第一轴肩的端面与所述端盖的端面之间设置有多个滚动体，且所述滚动***于所述轴向容纳孔中；所述第一轴肩的端面和所述端盖的端面中的至少一者与所述滚动体相接触。Further, the rear body has a first shoulder, a plurality of rolling elements are provided between the end surface of the first shoulder and the end surface of the end cover, and the rolling elements are located in the axial receiving hole. ; At least one of the end surface of the first shoulder and the end surface of the end cap is in contact with the rolling element.

进一步地，所述夹爪槽包括依次连通的第一限位部、第二限位部和第三限位部，所述第一限位部的轴向截面的宽度大于所述第二限位部的轴向截面的宽度，所述第二限位部的轴向截面的宽度小于所述第三限位部的轴向截面的宽度；Further, the clamping claw groove includes a first limiting part, a second limiting part and a third limiting part that are connected in sequence, and the width of the axial cross-section of the first limiting part is greater than that of the second limiting part. The width of the axial cross-section of the second limiting part is smaller than the width of the axial cross-section of the third limiting part;

所述夹爪包括依次相连接的第一子部、第二子部和第三子部，所述第一子部与所述第一限位部相适配，所述第二子部与所述第二限位部相适配，所述第三子部与所述第三限位部相适配。The clamping jaw includes a first sub-part, a second sub-part and a third sub-part that are connected in sequence. The first sub-part is adapted to the first limiting part, and the second sub-part is adapted to the first limiting part. The second limiting part is adapted to fit, and the third sub-part is adapted to the third limiting part.

进一步地，所述离合组件包括第一接合子和第二接合子，所述第一接合子被配置为能够与所述前体同步转动，所述第二接合子被配置为能够与所述后体同步转动；Further, the clutch assembly includes a first joint and a second joint, the first joint is configured to rotate synchronously with the front body, and the second joint is configured to rotate with the rear body. The body rotates synchronously;

所述第一接合子与所述第二接合子之间具有使所述前体与所述后体之间能够保持相对固定的接合状态；The first joint and the second joint have a joint state that enables the front body and the rear body to maintain a relatively fixed joint state;

所述第一接合子与所述第二接合子之间还具有使所述前体与所述后体之间能够发生相对转动的分离状态。The first joint and the second joint also have a separation state that enables relative rotation between the front body and the rear body.

进一步地，所述第一接合子与所述第二接合子之间被配置为通过减小间距或增大间距的方式以实现所述接合状态与所述分离状态之间的切换。Further, the first joint and the second joint are configured to achieve switching between the engaged state and the separated state by reducing the spacing or increasing the spacing.

进一步地，所述第一接合子与所述前体周向固定，所述第一接合子与所述前体轴向固定，所述第二接合子与所述后体周向固定，且所述第二接合子能够沿所述后体轴向移动。Further, the first joint is circumferentially fixed to the front body, the first joint is axially fixed to the front body, the second joint is circumferentially fixed to the rear body, and the The second joint is axially movable along the rear body.

进一步地，所述第一接合子与所述前体周向固定，所述第一接合子能够沿所述前体的轴向移动，所述第二接合子与所述后体周向固定，且所述第二接合子与所述后体轴向固定。Further, the first joint is circumferentially fixed to the front body, the first joint is movable along the axial direction of the front body, and the second joint is circumferentially fixed to the rear body, And the second connector is axially fixed to the rear body.

进一步地，所述的钻夹头还包括弹性复位件，所述弹性复位件被配置为使所述第一接合子与所述第二接合子之间具有由所述分离状态向所述接合状态切换的趋势；Further, the drill chuck further includes an elastic return member, and the elastic return member is configured to allow the first joint member and the second joint member to move from the separated state to the engaged state. Switching tendencies;

所述第一接合子具有相对的内侧和外侧，所述第二接合子具有相对的内侧和外侧，所述第一接合子的内侧与所述第二接合子的内侧相对，且所述第一接合子的内侧的表面具有第一齿结构，所述第二接合子的内侧的表面具有与所述第一齿结构相啮合的第二齿结构；The first joint has an opposite inner side and an outer side, the second joint has an opposite inner side and an outer side, the inner side of the first joint is opposite to the inner side of the second joint, and the first joint has an inner side opposite to an inner side of the second joint. The inner surface of the joint has a first tooth structure, and the inner surface of the second joint has a second tooth structure that meshes with the first tooth structure;

所述弹性复位件位于所述第一接合子的外侧，或所述弹性复位件位于所述第二接合子的外侧。The elastic return component is located outside the first joint, or the elastic return component is located outside the second joint.

进一步地，所述的钻夹头还包括离合转动套，所述前体、所述后体和所述离合转动套同轴设置，所述离合转动套被配置为能够相对于所述后体转动，以改变所述第一接合子与所述第二接合子之间的间距。Further, the drill chuck further includes a clutch rotating sleeve, the front body, the rear body and the clutch rotating sleeve are coaxially arranged, and the clutch rotating sleeve is configured to be able to rotate relative to the rear body. , to change the distance between the first joint and the second joint.

进一步地，所述第一接合子的内侧的表面还具有多个滚槽，所述滚槽的槽深由一端向另一端逐渐增大；所述滚槽容置有滚珠；所述离合转动套的旋转能够使所述滚珠在所述滚槽的一端与另一端之间往复移动，以使所述第一接合子与所述第二接合子之间相接合或分离。Further, the inner surface of the first joint also has a plurality of rolling grooves, the depth of the rolling grooves gradually increases from one end to the other end; the rolling grooves accommodate balls; and the clutch rotation sleeve The rotation can cause the ball to reciprocate between one end and the other end of the rolling groove, so that the first joint and the second joint are engaged or separated.

进一步地，所述端盖与第一接合子之间具有凹凸限位结构，以使第一接合子相对于所述端盖轴向运动，且所述第一接合子与所述端盖之间周向固定，其中，所述凹凸限位结构包括：设置于端盖上的第一凸块和第一凹槽，以及设置于第一接合子上的第二凸块和第二凹槽，所述第一凸块伸入所述第二凹槽，所述第二凸块伸入所述第一凹槽。Further, there is a concave and convex limiting structure between the end cap and the first joint, so that the first joint can move axially relative to the end cap, and there is a gap between the first joint and the end cap. Circumferentially fixed, wherein the concave and convex limiting structure includes: a first convex block and a first groove provided on the end cover, and a second convex block and a second groove provided on the first joint, so The first protruding block extends into the second groove, and the second protruding block extends into the first groove.

进一步地，所述前体的周向具有一个应急孔，或所述前体的周向对称设置有多个应急孔。Further, the precursor has one emergency hole in its circumferential direction, or multiple emergency holes are symmetrically arranged in the circumferential direction of the precursor.

本公开还提供了一种动力工具，其包括：驱动轴及所述的钻夹头；所述驱动轴与所述后体相连接，用于驱动所述后体转动。The present disclosure also provides a power tool, which includes: a driving shaft and the drill chuck; the driving shaft is connected to the rear body and is used to drive the rear body to rotate.

进一步地，所述后体的后端的端面具有安装轴孔或柄状结构；所述安装轴孔与驱动轴相配合或所述柄状结构与所述驱动轴相配合，以通过驱动轴驱动所述钻夹头转动。Further, the end surface of the rear end of the rear body has a mounting shaft hole or a handle-like structure; the installation shaft hole matches the driving shaft or the handle-like structure matches the driving shaft to drive the vehicle through the driving shaft. The drill chuck rotates.

进一步地，所述安装轴孔为螺纹孔或所述安装轴孔的横截面呈多边形的孔；Further, the mounting shaft hole is a threaded hole or a hole with a polygonal cross-section;

所述柄状结构具有外螺纹或所述柄状结构的横截面呈多边形。The handle-like structure has an external thread or a cross-section of the handle-like structure is polygonal.

有益效果beneficial effects

本公开提供的钻夹头及动力工具，通过在前体上设置多个夹爪槽，且多个夹爪槽绕前体的轴线均匀分布，这样在安装夹爪后，利于实现夹爪对钻具的均匀施力，保证钻具使用过程中的稳定性和安全性，而夹爪槽的导向方向沿前体的径向设置，这样使得多个夹爪能够在后体的驱动下在各自对应的夹爪槽的限制下定向移动，并且由于夹爪是沿前体的径向移动，这样利于实现增大钻夹头适配的钻具的直径范围，并且利于缩短夹爪的长度，从而利于减小钻夹头整体的轴向长度。The drill chuck and power tool provided by the present disclosure are provided with multiple clamping claw grooves on the front body, and the multiple clamping claw grooves are evenly distributed around the axis of the precursor body, so that after the clamping jaws are installed, the drilling chuck is facilitated. The uniform force application of the tool ensures the stability and safety during use of the drilling tool, and the guide direction of the clamping claw groove is set along the radial direction of the front body, so that multiple clamping jaws can be driven by the rear body in their corresponding positions. It moves directionally under the constraints of the clamping jaw groove, and because the clamping jaw moves in the radial direction of the front body, this is conducive to increasing the diameter range of the drill tool that the drill chuck is adapted to, and is conducive to shortening the length of the clamping jaw, thereby conducive to Reduce the overall axial length of the drill chuck.

附图说明Description of drawings

为了更清楚地说明本公开实施例中的技术方案，下面将对实施例或示范性技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings in the following description are only illustrations of the present disclosure. For some embodiments, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

图1是本公开一个或多个实施例中的钻夹头的结构示意图（半剖视）；Figure 1 is a schematic structural diagram (half-section) of a drill chuck in one or more embodiments of the present disclosure;

图2是本公开一个或多个实施例中前体的结构示意图；Figure 2 is a schematic structural diagram of a precursor in one or more embodiments of the present disclosure;

图3是图2中的前体的俯视图；Figure 3 is a top view of the precursor in Figure 2;

图4是图2中的前体的仰视图；Figure 4 is a bottom view of the front body in Figure 2;

图5是本公开一个或多个实施例中前体的轴向剖视图；Figure 5 is an axial cross-sectional view of a precursor in one or more embodiments of the present disclosure;

图6是本公开一个或多个实施例中后体的结构示意图（剖视）；Figure 6 is a schematic structural diagram (cross-section) of the rear body in one or more embodiments of the present disclosure;

图7是本公开一个或多个实施例中的后体的俯视图；Figure 7 is a top view of the rear body in one or more embodiments of the present disclosure;

图8是本公开一个或多个实施例中夹爪的主视图；Figure 8 is a front view of a clamping jaw in one or more embodiments of the present disclosure;

图9是图8中的夹爪的左视图；Figure 9 is a left side view of the clamping jaw in Figure 8;

图10是图8中的夹爪的仰视图；Figure 10 is a bottom view of the clamping jaw in Figure 8;

图11是本公开一个或多个实施例中的第一接合子的结构示意图；Figure 11 is a schematic structural diagram of the first adapter in one or more embodiments of the present disclosure;

图12是本公开一个或多个实施例中的第一接合子处的滚槽的剖视图；Figure 12 is a cross-sectional view of the rolling groove at the first joint in one or more embodiments of the present disclosure;

图13是本公开一个或多个实施例中的第二接合子的结构示图；Figure 13 is a structural diagram of a second adapter in one or more embodiments of the present disclosure;

图14是本公开一个或多个实施例中的离合转动套的结构示意图；Figure 14 is a schematic structural diagram of a clutch rotating sleeve in one or more embodiments of the present disclosure;

图15是本公开一个或多个实施例中的离合转动套的另一视角的结构示意图；Figure 15 is a schematic structural diagram of the clutch rotating sleeve in one or more embodiments of the present disclosure from another perspective;

图16是本公开一个或多个实施例中的钻夹头的另一结构示意图；Figure 16 is another structural schematic diagram of a drill chuck in one or more embodiments of the present disclosure;

图17是图16中的钻夹头的后体的结构示意图；Figure 17 is a schematic structural view of the rear body of the drill chuck in Figure 16;

图18是图17中的后体的俯视图；Figure 18 is a top view of the rear body in Figure 17;

图19是本公开一个或多个实施例中端盖的结构示意图；Figure 19 is a schematic structural diagram of an end cap in one or more embodiments of the present disclosure;

图20是本公开一个或多个实施例中的第一接合子的另一结构示意图；Figure 20 is another structural schematic diagram of the first adapter in one or more embodiments of the present disclosure;

图21是图20中的第一接合子的俯视图；Figure 21 is a top view of the first joint in Figure 20;

图22是本公开一个或多个实施例中的第二接合子的另一结构示意图；Figure 22 is another structural schematic diagram of the second adapter in one or more embodiments of the present disclosure;

图23是图22中的第二接合子的又一结构示意图。Fig. 23 is another structural schematic diagram of the second adapter in Fig. 22.

上述附图所涉及的标号明细如下：The details of the labels involved in the above drawings are as follows:

100、夹爪；102、夹爪槽；103、前体；104、后体；105、第一平面螺纹；106、第二平面螺纹；107、第一限位部；108、第二限位部；109、第三限位部；110、第一子部；111、第二子部；112、第三子部；113、端盖；114、轴向容纳孔；115、钻具容纳孔；116、第一轴肩；117、第二轴肩；118、滚动体；119、第一接合子；120、第二接合子；121、第一齿结构；122、第二齿结构；123、弹性复位件；124、离合转动套；125、滚槽；126、滚珠；127、凸块结构；128、第四通孔；129、后顶盖；130、花键；131、花键槽；132、卡簧；133、限位台阶；134、第一凸块；135、第一凹槽；136、第二凸块；137、第二凹槽；138、圆形通孔；139、应急孔；200、安装轴孔。100. Clamp; 102. Clamp groove; 103. Front body; 104. Rear body; 105. First plane thread; 106. Second plane thread; 107. First limiting part; 108. Second limiting part ; 109. The third limiting part; 110. The first sub-part; 111. The second sub-part; 112. The third sub-part; 113. End cover; 114. Axial receiving hole; 115. Drilling tool receiving hole; 116 , first shoulder; 117, second shoulder; 118, rolling element; 119, first joint; 120, second joint; 121, first tooth structure; 122, second tooth structure; 123, elastic reset 124. Clutch rotating sleeve; 125. Rolling groove; 126. Ball; 127. Bump structure; 128. Fourth through hole; 129. Rear top cover; 130. Spline; 131. Spline groove; 132. Snap spring ; 133. Limiting step; 134. First bump; 135. First groove; 136. Second bump; 137. Second groove; 138. Circular through hole; 139. Emergency hole; 200. Installation Shaft hole.

本发明的实施方式Embodiments of the invention

为了使本公开的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本公开，并不用于限定本公开。In order to make the purpose, technical solutions and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present disclosure and are not intended to limit the present disclosure.

需说明的是，当部件被称为“固定于”或“设置于”另一个部件，它可以直接在另一个部件上或者间接在该另一个部件上。当一个部件被称为是“连接于”另一个部件，它可以是直接或者间接连接至该另一个部件上。术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。术语“第一”、“第二”仅用于便于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明技术特征的数量。“多个”的含义是两个或两个以上，除非另有明确具体的限定。It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings. They are only for convenience of description and do not indicate or imply the device to which they are referred. Or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the disclosure. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "first" and "second" are only used for convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of technical features. "Plural" means two or more, unless otherwise expressly and specifically limited.

为了说明本公开所提供的技术方案，以下结合具体附图及实施例进行详细说明。In order to illustrate the technical solutions provided by the present disclosure, detailed descriptions are given below with reference to specific drawings and embodiments.

参见图1所示，在一个或多个实施例中，本公开提供了一种钻夹头包括：夹爪100、前体103和后体104件；夹爪的数量为多个；前体103设置有多个夹爪槽102，多个夹爪槽102绕前体103的轴线均匀分布，即多个夹爪槽绕前体的周向均匀分布，夹爪槽102的导向方向沿第一方向设置，第一方向垂直于前体的轴线，夹爪滑动限位于夹爪槽102中；后体104用于驱动夹爪在夹爪槽102中沿第一方向移动，以使夹爪能够远离或靠近前体103的轴线。Referring to Figure 1, in one or more embodiments, the present disclosure provides a drill chuck including: a clamping jaw 100, a front body 103 and a rear body 104; the number of clamping jaws is multiple; the front body 103 A plurality of clamping claw grooves 102 are provided, the plurality of clamping claw grooves 102 are evenly distributed around the axis of the front body 103, that is, the plurality of clamping claw grooves 102 are evenly distributed around the circumferential direction of the front body, and the guiding direction of the clamping claw grooves 102 is along the first direction. It is set that the first direction is perpendicular to the axis of the front body, and the sliding movement of the clamping jaw is limited in the clamping jaw slot 102; the rear body 104 is used to drive the clamping jaw to move in the first direction in the clamping jaw slot 102, so that the clamping jaw can move away from or Close to the axis of the precursor 103 .

本公开提供的钻夹头，通过在前体103上设置多个夹爪槽102，且多个夹爪槽102绕前体103的轴线均匀分布，这样在安装夹爪后，利于实现夹爪对钻具的均匀施力，保证钻具使用过程中的稳定性和安全性。而夹爪槽102的导向方向沿前体103的径向设置，这样使得夹爪能够在后体104的驱动下在夹爪槽102的限制下定向移动，并且由于夹爪是沿前体103的径向移动，这样利于实现增大钻夹头适配的钻具的直径范围，并且利于缩短夹爪的长度，从而利于减小钻夹头整体的轴向长度。The drill chuck provided by the present disclosure is provided with multiple jaw grooves 102 on the front body 103, and the multiple jaw grooves 102 are evenly distributed around the axis of the front body 103, so that after the clamp jaws are installed, the jaw alignment is facilitated. The uniform force application of the drilling tool ensures the stability and safety of the drilling tool during use. The guide direction of the clamping claw groove 102 is set along the radial direction of the front body 103, so that the clamping claw can be driven by the rear body 104 and move directionally under the restriction of the clamping claw groove 102, and because the clamping claw is along the front body 103 The radial movement is beneficial to increasing the diameter range of the drill tool to which the drill chuck is adapted, and is beneficial to shortening the length of the clamping jaw, thereby conducive to reducing the overall axial length of the drill chuck.

参见图2至图5所示，在一些实施例中，多个夹爪槽102与多个夹爪一一对应设置，即夹爪槽102的数量与夹爪的数量相等；一个夹爪槽102中安装一个夹爪；夹爪槽102用于对夹爪的移动进行导向，使夹爪能够沿夹爪槽102的导向方向移动，即夹爪沿前体103的径向移动；多个夹爪能够在后体104的驱动下同步靠近前体103的轴线或同步远离前体103的轴线，这样多个夹爪之间能够相互远离以实现对钻具的松开，或多个夹爪之间相互靠近以实现对对钻具的夹紧。后体104相对于前体103绕后体104自身的轴线转动，以实现对多个夹爪驱动，使多个夹爪沿前体103的径向移动。Referring to FIGS. 2 to 5 , in some embodiments, multiple clamping jaw slots 102 are provided in one-to-one correspondence with multiple clamping jaws, that is, the number of clamping jaw slots 102 is equal to the number of clamping jaws; one clamping jaw slot 102 A clamping jaw is installed in the front body; the clamping jaw groove 102 is used to guide the movement of the clamping jaw, so that the clamping jaw can move along the guiding direction of the clamping jaw slot 102, that is, the clamping jaw moves along the radial direction of the front body 103; multiple clamping jaws It can be driven by the rear body 104 to synchronously approach the axis of the front body 103 or to synchronously move away from the axis of the front body 103, so that multiple clamping jaws can move away from each other to achieve loosening of the drilling tool, or between multiple clamping jaws Close to each other to achieve clamping of the drilling tools. The rear body 104 rotates around the axis of the rear body 104 relative to the front body 103 to drive the plurality of clamping jaws so that the plurality of clamping jaws move in the radial direction of the front body 103 .

在一个实施例中，第一方向平行于前体的径向方向，夹爪槽102的导向方向沿前体103的径向设置，后体104用于驱动夹爪在夹爪槽102中沿前体103的径向移动，以使夹爪能够远离或靠近前体103的轴线。In one embodiment, the first direction is parallel to the radial direction of the front body, the guide direction of the clamping jaw groove 102 is set along the radial direction of the front body 103 , and the rear body 104 is used to drive the clamping jaw forward in the clamping jaw slot 102 . The radial movement of the body 103 enables the jaws to move away from or closer to the axis of the front body 103 .

参见图1所示，在一些实施例中，钻夹头还包括离合组件；离合组件被配置为使前体103与后体104之间能够保持相对固定或使前体103与后体104之间能够发生相对转动；当离合组件使前体103与后体104之间保持相对固定时，利于实现钻具在前体103上的锁紧，并且可以实现钻夹头的正转和反转，而且钻夹头正转和反转情况下，钻具不易松动。在一个实施例中，后体104相对于前体103正转时，后体104实现夹爪对钻具的夹紧动，在前体103和后体104同时正转时，夹爪对钻具的锁紧力增大，从而使得钻夹头具有自紧的功能；钻具具有相对的前端和后端，钻具的前端对等加工物体进行加工，而钻具的后端***钻夹头中，通过钻夹头多个夹爪对钻具的后端进行夹紧，实现钻具可拆卸固定于钻夹头上，这样钻具能够与钻夹头一同转动。当钻具安装在钻夹头上后，从钻具的后端向钻具的前端方向观察时，钻夹头顺时针转动的方向为钻夹头的正转方向，钻夹头逆时针转动的方向为钻夹头的反转方向。而后体104沿钻夹头的正转方向转动时，以使多个夹爪对钻具进行夹紧操作；后体104沿钻夹头的反转方向转动时，以使多个夹爪对钻具进行松开操作。通过离合组合可以实现钻夹头的双向转动，以使钻具能够进行双向工作。Referring to FIG. 1 , in some embodiments, the drill chuck further includes a clutch assembly; the clutch assembly is configured to maintain a relative fixation between the front body 103 and the rear body 104 or to maintain a relative fixation between the front body 103 and the rear body 104 . Relative rotation can occur; when the clutch assembly keeps the front body 103 and the rear body 104 relatively fixed, it is beneficial to lock the drilling tool on the front body 103, and the forward and reverse rotation of the drill chuck can be realized, and When the drill chuck rotates forward and reverse, the drilling tool is not easy to loosen. In one embodiment, when the rear body 104 rotates forward relative to the front body 103, the rear body 104 realizes the clamping movement of the clamping jaws on the drilling tool. When the front body 103 and the rear body 104 rotate forward at the same time, the clamping jaws clamp the drilling tool. The locking force increases, so that the drill chuck has a self-tightening function; the drill tool has a relative front end and a rear end. The front end of the drill tool processes the same processing object, while the rear end of the drill tool is inserted into the drill chuck. , the rear end of the drill tool is clamped by multiple clamping jaws of the drill chuck, so that the drill tool can be detachably fixed on the drill chuck, so that the drill tool can rotate together with the drill chuck. When the drill tool is installed on the drill chuck, when viewed from the rear end of the drill tool to the front end of the drill tool, the clockwise rotation direction of the drill chuck is the forward rotation direction of the drill chuck, and the counterclockwise rotation direction of the drill chuck is The direction is the reverse direction of the drill chuck. When the rear body 104 rotates in the forward direction of the drill chuck, the multiple clamping jaws clamp the drill tool; when the rear body 104 rotates in the reverse direction of the drill chuck, the multiple clamping jaws clamp the drill tool. Tools for loosening operation. Bidirectional rotation of the drill chuck can be achieved through the clutch combination, so that the drilling tool can work in both directions.

参见图3和图4所示，所示，在一个实施例中，夹爪槽102的数量为3个，3个夹爪槽102中，相邻两个夹爪槽102之间所对应的圆心角为60度。Referring to Figures 3 and 4, it is shown that in one embodiment, the number of clamping claw grooves 102 is three. Among the three clamping claw grooves 102, the corresponding center of the circle between two adjacent clamping claw grooves 102 is The angle is 60 degrees.

参见图1和图5所示，所示，在一些实施例中，夹爪槽102的导向方向与前体103的径向平行；夹爪的一端面具有第一平面螺纹105，后体104的一端面具有与第一平面螺纹105相配合的第二平面螺纹106，以在后体104相对于前体103转动时，使得夹爪能够沿前体103的径向移动。夹爪具有相对的前端和后端，第一平面螺纹105位于夹爪的后端的端面上。后体104具有相对的前端和后端，第二平面螺纹106位于后体104的前端的端面上。在一个实施例中，钻夹头的各个部件的前后方向，以钻夹头的前后方向相一致，钻具从钻夹头的前端安装。夹爪上的第一平面螺纹105与后体104上的第二平面螺纹106相啮合，这样当后体104相对的前体103转支时，通过第一平面螺纹105与第二平面螺纹106实现后体104的回转运动转换为夹爪沿夹爪槽102的直线运动；第一平面螺纹105为平面矩形螺纹，第二平面螺纹106为平面矩形螺纹，通过平面矩形螺纹可以较好的实现回转运动与直线运动之间的转换，提高传动效率。Referring to Figures 1 and 5, it is shown that in some embodiments, the guiding direction of the clamping jaw groove 102 is parallel to the radial direction of the front body 103; one end surface of the clamping jaw has a first plane thread 105, and the rear body 104 One end surface has a second flat thread 106 that matches the first flat thread 105, so that when the rear body 104 rotates relative to the front body 103, the clamping jaw can move in the radial direction of the front body 103. The clamping jaw has opposite front and rear ends, and the first flat thread 105 is located on the end surface of the rear end of the clamping jaw. The rear body 104 has an opposite front end and a rear end, and the second planar thread 106 is located on the end surface of the front end of the rear body 104 . In one embodiment, the front-to-back direction of each component of the drill chuck is consistent with the front-to-back direction of the drill chuck, and the drilling tool is installed from the front end of the drill chuck. The first flat thread 105 on the clamping jaw meshes with the second flat thread 106 on the rear body 104, so that when the rear body 104 rotates relative to the front body 103, the first flat thread 105 and the second flat thread 106 are realized. The rotational motion of the rear body 104 is converted into the linear motion of the clamping jaw along the clamping jaw groove 102; the first plane thread 105 is a plane rectangular thread, and the second plane thread 106 is a plane rectangular thread. The rotation movement can be better realized by the plane rectangular thread. Conversion between linear motion and linear motion improves transmission efficiency.

参见图1所示，在一些实施例中，夹爪槽102包括依次连通的第一限位部107、第二限位部108和第三限位部109，第一限位部107的轴向截面的宽度大于第二限位部108的轴向截面的宽度，第二限位部108的轴向截面的宽度小于第三限位部109的轴向截面的宽度；夹爪包括依次相连接的第一子部110、第二子部111和第三子部112，第一子部110与第一限位部107相适配，第二子部111与第二限位部108相适配，第三子部112与第三限位部109相适配。通过对夹爪槽102和夹爪的设计，使得夹爪限位于夹爪槽102上，保证夹爪沿前体103的径向移动，并且夹爪在夹爪槽102中不易晃动。Referring to FIG. 1 , in some embodiments, the jaw groove 102 includes a first limiting part 107 , a second limiting part 108 and a third limiting part 109 that are connected in sequence. The axial direction of the first limiting part 107 The width of the cross-section is greater than the width of the axial cross-section of the second limiting part 108, and the width of the axial cross-section of the second limiting part 108 is smaller than the width of the axial cross-section of the third limiting part 109; the clamping jaws include successively connected The first sub-part 110, the second sub-part 111 and the third sub-part 112, the first sub-part 110 is adapted to the first limiting part 107, the second sub-part 111 is adapted to the second limiting part 108, The third sub-portion 112 is adapted to the third limiting portion 109 . Through the design of the clamping jaw slot 102 and the clamping jaw, the clamping jaw is limited to the clamping jaw slot 102 to ensure that the clamping jaw moves in the radial direction of the front body 103 and the clamping jaw is not easy to shake in the clamping jaw slot 102.

参见图1所示，在一些实施例中，钻夹头还包括端盖113，端盖113与前体103的一端的端面固定连接，前体103具有轴向容纳孔114，后体104通过端盖113限位于轴向容纳孔114中，端盖113具有第一通孔，后体104相对的另一端穿过第一通孔。前体103还具有与轴向容纳孔114相连接的钻具容纳孔115，用于供钻具***，并通过夹爪对钻具进行夹紧。由前体103的后端至前体103的前端的方向，依次为轴向容纳孔114和钻具容纳孔115。轴向容纳孔114与钻具容纳孔115之间形成有台阶面，以对后体104限位，使得后体104在前体103的台阶面与端盖113的配合上，实现将后体104限位于前体103上。Referring to Figure 1, in some embodiments, the drill chuck also includes an end cap 113. The end cap 113 is fixedly connected to the end surface of one end of the front body 103. The front body 103 has an axial receiving hole 114, and the rear body 104 passes through the end surface. The cover 113 is limited in the axial receiving hole 114. The end cover 113 has a first through hole, and the opposite end of the rear body 104 passes through the first through hole. The front body 103 also has a drilling tool receiving hole 115 connected to the axial receiving hole 114 for inserting the drilling tool and clamping the drilling tool through the clamping jaw. The direction from the rear end of the front body 103 to the front end of the front body 103 is the axial receiving hole 114 and the drilling tool receiving hole 115 in order. A stepped surface is formed between the axial receiving hole 114 and the drilling tool receiving hole 115 to limit the position of the rear body 104, so that the rear body 104 cooperates with the stepped surface of the front body 103 and the end cover 113 to realize the rear body 104. is limited to the precursor 103.

在一个实施例中，端盖113与前体103的后端的端面通过螺钉可拆卸固定连接。In one embodiment, the end cap 113 is detachably fixedly connected to the end surface of the rear end of the front body 103 through screws.

参见图6所示，在一些实施例中，后体104具有第一轴肩116，第一轴肩116的端面与端盖113的端面之间设置有多个滚动体118，且滚动体118位于轴向容纳孔114中；第一轴肩116的端面和端盖113的端面中的至少一者与滚动体118相接触。通过设置滚动体118利于实现后体104相对于前体103转动，且在端盖113与滚动体118相配合下，实现后体104与前体103的轴向固定，即后体104不会相对于前体103发生轴向移动，但后体104能够相对于前体103转动。Referring to FIG. 6 , in some embodiments, the rear body 104 has a first shoulder 116 , and a plurality of rolling elements 118 are disposed between the end surface of the first shoulder 116 and the end surface of the end cover 113 , and the rolling elements 118 are located In the axial receiving hole 114 , at least one of the end surface of the first shoulder 116 and the end surface of the end cover 113 is in contact with the rolling element 118 . By arranging the rolling body 118, it is convenient to realize the rotation of the rear body 104 relative to the front body 103, and with the cooperation of the end cover 113 and the rolling body 118, the axial fixation of the rear body 104 and the front body 103 is achieved, that is, the rear body 104 will not face each other. The front body 103 moves axially, but the rear body 104 can rotate relative to the front body 103 .

参见图1所示，在一个实施例中，滚动体118为圆球，圆球的材质为钢，即滚动体118为钢珠；第一轴肩116的端面和端盖113的端面均一滚动体118相接触。As shown in FIG. 1 , in one embodiment, the rolling element 118 is a ball, and the material of the ball is steel, that is, the rolling element 118 is a steel ball; the end surface of the first shoulder 116 and the end surface of the end cover 113 are uniformly aligned with the rolling element 118 contact.

需要说明的下，在一些其它实施例中，滚动体118还可为滚针，滚针为滚针轴承中的滚针。在一些其它实施方式中上，多个滚动体118可以安装于一保持架上，以实现多个滚动体118之间间隔设置，多个滚动体118和保持架形成推力轴承。It should be noted that in some other embodiments, the rolling element 118 may also be a needle roller, and the needle roller is a needle roller in a needle roller bearing. In some other embodiments, multiple rolling elements 118 may be installed on a cage to achieve spaced arrangement between the multiple rolling elements 118 , and the multiple rolling elements 118 and the cage form a thrust bearing.

参见图1、图11、图13和图13所示，在一些实施例中，离合组件包括第一接合子119和第二接合子120，第一接合子119被配置为能够与前体103同步转动，第二接合子120被配置为能够与后体104同步转动；第一接合子119与第二接合子120之间具有使前体103与后体104之间能够保持相对固定的接合状态；第一接合子119与第二接合子120之间还具有使前体103与后体104之间能够发生相对转动的分离状态。通过第一接合子119与第二接合子120实现后体104与前体103之间的接合或断开，即当第一接合子119与第二接合子120相接合时，后体104与前体103之间能够同步转动，实现钻夹头的双向转动，当第一接合子119与第二接合子120相断开时，后体104能够相对于前体103转动，从而实现后体104驱动夹爪对钻具的夹紧或松开。Referring to FIGS. 1 , 11 , 13 and 13 , in some embodiments, the clutch assembly includes a first engagement 119 and a second engagement 120 , the first engagement 119 being configured to be synchronized with the front body 103 Rotate, the second joint 120 is configured to rotate synchronously with the rear body 104; the first joint 119 and the second joint 120 have a joint state that enables the front body 103 and the rear body 104 to maintain a relatively fixed joint state; The first joint 119 and the second joint 120 also have a separated state that enables relative rotation between the front body 103 and the rear body 104 . The coupling or disconnection between the rear body 104 and the front body 103 is achieved through the first coupling element 119 and the second coupling element 120 , that is, when the first coupling element 119 and the second coupling element 120 are coupled, the rear body 104 and the front body 103 are engaged. The bodies 103 can rotate synchronously to realize the bidirectional rotation of the drill chuck. When the first joint 119 and the second joint 120 are disconnected, the rear body 104 can rotate relative to the front body 103, thereby realizing the driving of the rear body 104 The clamping jaw clamps or loosens the drilling tool.

在一些实施例中，第一接合子119与第二接合子120之间被配置为通过减小间距或增大间距的方式以实现接合状态与分离状态之间的切换，当第一接合子119与第二接合子120之间的间距减小至第一设定值时，第一接合子119与第二接合子120相接合；当第一接合子119与第二接合子120之间的间距逐渐增大，即当间距大于或等于第二设定值时，第一接合子119与第二接合子120之间相分离，即相断开。In some embodiments, the first joint 119 and the second joint 120 are configured to achieve switching between the engaged state and the separated state by reducing the distance or increasing the distance. When the first joint 119 When the distance between the first joint 119 and the second joint 120 is reduced to the first set value, the first joint 119 and the second joint 120 are joined; when the distance between the first joint 119 and the second joint 120 Gradually increases, that is, when the distance is greater than or equal to the second set value, the first joint 119 and the second joint 120 are separated, that is, the phases are disconnected.

参见图1所示，在一些实施例中，第一接合子119与前体103周向固定，第一接合子119与前体103轴向固定，第二接合子120与后体104周向固定，且第二接合子120能够沿后体104轴向移动，这样通过第二接合子120相对于后体104沿后体104的轴向移动，以实现第一接合子119与第二接合之间的距离的改变，从而实现第一接合子119与第二接合子120之间的接合或分离。在一个实施例中，第一接合子119与端盖113一起通过螺钉固定于前体103上。第二接合子120具有第二通孔，第二通孔的孔壁具有花键，后体104上具有与第二接合子120上的花键130相配合的花键槽131，第二接合子120套设于后体104上，这样通过花键与花键槽131的配合实现第二接合子120与后体104之间的周向固定，且第二接合子120能够沿后体104的轴向移动。Referring to FIG. 1 , in some embodiments, the first joint 119 is circumferentially fixed to the front body 103 , the first joint 119 is axially fixed to the front body 103 , and the second joint 120 is circumferentially fixed to the rear body 104 , and the second joint 120 can move along the axial direction of the rear body 104, so that the second joint 120 moves relative to the rear body 104 along the axial direction of the rear body 104 to realize the connection between the first joint 119 and the second joint. The distance changes, thereby realizing the engagement or separation between the first connector 119 and the second connector 120 . In one embodiment, the first joint 119 and the end cover 113 are fixed on the front body 103 by screws. The second connector 120 has a second through hole. The hole wall of the second through hole has splines. The rear body 104 has a spline groove 131 that matches the spline 130 on the second connector 120. The second connector 120 It is sleeved on the rear body 104, so that the circumferential fixation between the second joint 120 and the rear body 104 is achieved through the cooperation of the splines and the spline grooves 131, and the second joint 120 can move along the axial direction of the rear body 104. .

需要说明的是，在一些其它实施例中，第一接合子119与端盖113为一体结构；在另外一些实施例中，第一接合子119、端盖113与前体103为一体结构。在一些其它实施方式中，第二通孔为腰形孔，后体104具有与腰形孔相配合的横截面形状，这样也可以实现第二接合子120沿后体104的轴向移动。It should be noted that in some other embodiments, the first joint 119 and the end cover 113 are an integral structure; in other embodiments, the first joint 119 , the end cover 113 and the front body 103 are an integral structure. In some other embodiments, the second through hole is a waist-shaped hole, and the rear body 104 has a cross-sectional shape matching the waist-shaped hole, so that the second joint 120 can also move along the axial direction of the rear body 104 .

参见图16、图17、图18、图19和图20所示，在一些其它实施例中，第一接合子119与前体103周向固定，第一接合子119能够沿前体103的轴向移动，第二接合子120与后体104周向固定，且第二接合子120与后体104轴向固定。端盖与第一接合子之间具有凹凸限位结构，以使第一接合子相对于端盖轴向运动，且第一接合子与端盖之间周向固定；其中，凹凸限位结构包括：设置于端盖上的第一凸块134和第一凹槽135，设置于第一接合子上的第二凸块136和第二凹槽137，第一凸块伸入第二凹槽，第二凸块伸入第一凹槽，端盖的朝向第一接合子的一面具有沿端盖的轴向延伸的多个第一凸块，多个第一凸块沿一设定圆的周向均匀间隔设置，该设定圆的圆心与端盖的中心同心，相邻两个第一凸块之间形成第一凹槽。而第一接合子的外侧具有沿第一接合子的轴向延伸的多个第二凸块，多个第二凸块沿一设定圆的周向均匀间隔设置，该设定圆的圆心与第一接合子的中心同心，相邻两个第二凸块之间形成第二凹槽；第一接合子与端盖同轴设置。第一接合子和端盖上开设的孔均为光滑的圆形通孔138，以供后体穿过。Referring to Figures 16, 17, 18, 19 and 20, in some other embodiments, the first joint 119 is circumferentially fixed to the front body 103, and the first joint 119 can be along the axis of the front body 103. When moving in the direction, the second joint 120 and the rear body 104 are circumferentially fixed, and the second joint 120 and the rear body 104 are fixed axially. There is a concave and convex limiting structure between the end cap and the first joint, so that the first joint moves axially relative to the end cap, and the first joint and the end cap are circumferentially fixed; wherein the concave and convex limiting structure includes : The first protrusion 134 and the first groove 135 provided on the end cover, the second protrusion 136 and the second groove 137 provided on the first joint, the first protrusion extends into the second groove, The second protrusion extends into the first groove. The side of the end cover facing the first joint has a plurality of first protrusions extending along the axial direction of the end cap. The plurality of first protrusions extend along the circumference of a set circle. They are arranged at even intervals, the center of the setting circle is concentric with the center of the end cover, and a first groove is formed between two adjacent first protrusions. The outer side of the first joint has a plurality of second bumps extending along the axial direction of the first joint. The plurality of second bumps are evenly spaced along the circumferential direction of a set circle. The center of the set circle is equal to the center of the circle. The center of the first joint is concentric, and a second groove is formed between two adjacent second protrusions; the first joint and the end cover are coaxially arranged. The holes opened on the first joint and the end cover are smooth circular through holes 138 for the rear body to pass through.

参见图1所示，在一些实施例中，钻夹头还包括弹性复位件123，弹性复位件123被配置为使第一接合子119与第二接合子120之间具有由分离状态向接合状态切换的趋势；第一接合子119具有相对的内侧和外侧，第二接合子120具有相对的内侧和外侧，第一接合子119的内侧与第二接合子120的内侧相对，且第一接合子119的内侧的表面具有第一齿结构121，第二接合子120的内侧的表面具有与第一齿结构121相啮合的第二齿结构122；第一齿结构121和第二齿结构122均可以为端面齿的形式，这样当第一齿结构121与第二齿结构122相啮合时，实现第一接合子119与第二接合子120之间的接合状态，当第一齿结构121与第二齿结构122完全分离后，实现第一接合子119与第二接合子120之间的分离状态。Referring to FIG. 1 , in some embodiments, the drill chuck further includes an elastic return member 123 , and the elastic return member 123 is configured to cause the first joint 119 and the second joint 120 to move from a separated state to an engaged state. Switching tendency; the first joint 119 has an opposite inner side and an outer side, the second joint 120 has an opposite inner side and an outer side, the inner side of the first joint 119 is opposite to the inner side of the second joint 120, and the first joint 119 has an opposite inner side and an outer side. The inner surface of 119 has a first tooth structure 121, and the inner surface of the second joint 120 has a second tooth structure 122 meshing with the first tooth structure 121; both the first tooth structure 121 and the second tooth structure 122 can be In the form of end face teeth, when the first tooth structure 121 meshes with the second tooth structure 122, the engagement state between the first joint 119 and the second joint 120 is achieved. When the first tooth structure 121 and the second After the tooth structure 122 is completely separated, the separation state between the first joint 119 and the second joint 120 is achieved.

参见图1所示，在一些实施例中，弹性复位件123位于第二接合子120的外侧。弹性复位件123套设于后体104上。弹性复位件123为波形弹簧。Referring to FIG. 1 , in some embodiments, the elastic restoring member 123 is located outside the second joint 120 . The elastic restoring member 123 is sleeved on the rear body 104 . The elastic return member 123 is a wave spring.

参见图16所示，在一些其它实施例中，弹性复位件123位于第一接合子119的外侧。具体的，弹性复位件123位于第一接合子119与端盖113之间，且弹性复位件套设于后体上。当端盖与第一接合子之间通过凹凸限位结构实现第一接合子周向固定，且能够沿前体的轴向移动时，在弹性复位件使第一接合子与第二接合子相分离时，第一凸块仍伸入第二凹槽，第二凸块仍伸入第一凹槽中。Referring to FIG. 16 , in some other embodiments, the elastic return member 123 is located outside the first joint 119 . Specifically, the elastic return member 123 is located between the first joint 119 and the end cover 113, and is sleeved on the rear body. When the first joint is circumferentially fixed through the concave and convex limiting structure between the end cover and the first joint and can move along the axial direction of the front body, the elastic return member causes the first joint to be in contact with the second joint. When separated, the first protrusion still extends into the second groove, and the second protrusion still extends into the first groove.

在一些实施例中，钻夹头还包括离合转动套124，前体103、后体104和离合转动套124同轴设置，离合转动套124被配置为能够相对于后体104转动，以改变第一接合子119与第二接合子120之间的间距。In some embodiments, the drill chuck further includes a clutch rotating sleeve 124. The front body 103, the rear body 104 and the clutch rotating sleeve 124 are coaxially arranged. The clutch rotating sleeve 124 is configured to be able to rotate relative to the rear body 104 to change the third The distance between one joint 119 and the second joint 120.

参见图11、图12、图15、图20和图21所示，在一些实施例中，第一接合子119的内侧的表面还具有多个滚槽125，多个滚槽125在第一接合子119的内侧的表面绕一圆均匀设置，该圆的圆心通过第一接合子119的中心。第一接合子119与第二接合子120均采用片状结构。滚槽125的槽深由一端向另一端逐渐增大。槽深的方向与后体104的轴向相平行。滚槽125容置有滚珠126，这样滚珠126位于第一接合子119与第二接合子120之间，当滚珠126位于滚槽125的最深处时，第一接合子119与第二接合子120相接合，当滚珠126由滚槽125的另一端向滚槽125的一端移动时，滚珠126使第一接合子119与第二接合子120之间的距离逐渐增大，当第二接合子120与第一接合子119之间的间距大于或等于第二设定值时，第一齿结构121与第二齿结构122之间不再啮合，从而实现第一接合子119与第二接合子120之间的分离。离合转动套124的内壁设置有多个沿离合转动套124径向凸出的凸块结构127，凸块结构具有第四通孔128，凸块结构的数量与滚槽125的数量相等，滚槽125的数量与滚珠126的数量相等。滚珠126限位第四通孔128中，且滚珠126的轴向高度大于凸块结构的轴向高度，这样利于通过滚珠126实现第一接合子119与第二接合子120之间的间距的改变。通过离合转动套124的旋转带动滚珠126在滚槽125中移动，使滚珠126在滚槽125的一端与另一端之间往复移动，从而实现第一接合子119与第二接合子120之间的接合或分离。离合转动套124沿钻夹头的正转方向转动时，使第一接合子119与第二接合子120相分离，离合转动套124沿钻夹头的反转方向转动时，使第一接合子119与第二接合子120相接合。Referring to Figures 11, 12, 15, 20 and 21, in some embodiments, the inner surface of the first joint 119 also has a plurality of rolling grooves 125, and the plurality of rolling grooves 125 are formed in the first joint. The inner surface of the element 119 is evenly arranged around a circle, and the center of the circle passes through the center of the first joint element 119 . Both the first connector 119 and the second connector 120 adopt a sheet structure. The groove depth of the rolling groove 125 gradually increases from one end to the other end. The direction of the groove depth is parallel to the axial direction of the rear body 104 . The rolling groove 125 accommodates the ball 126, so that the ball 126 is located between the first joint 119 and the second joint 120. When the ball 126 is located at the deepest part of the rolling groove 125, the first joint 119 and the second joint 120 When the ball 126 moves from the other end of the rolling groove 125 to one end of the rolling groove 125, the ball 126 gradually increases the distance between the first joint 119 and the second joint 120. When the second joint 120 When the distance between the first joint 119 and the first joint 119 is greater than or equal to the second set value, the first tooth structure 121 and the second tooth structure 122 are no longer in mesh, thereby realizing the first joint 119 and the second joint 120 separation between. The inner wall of the clutch rotating sleeve 124 is provided with a plurality of bump structures 127 protruding in the radial direction of the clutch rotating sleeve 124. The bump structures have fourth through holes 128. The number of the bump structures is equal to the number of the rolling grooves 125. The rolling grooves The number of 125 is equal to the number of balls 126. The ball 126 is limited in the fourth through hole 128, and the axial height of the ball 126 is greater than the axial height of the bump structure, which facilitates the change of the distance between the first joint 119 and the second joint 120 through the ball 126. . The rotation of the clutch rotating sleeve 124 drives the ball 126 to move in the rolling groove 125, so that the ball 126 moves back and forth between one end and the other end of the rolling groove 125, thereby realizing the joint between the first joint 119 and the second joint 120. or separation. When the clutch rotating sleeve 124 rotates in the forward direction of the drill chuck, the first joint 119 and the second joint 120 are separated. When the clutch rotating sleeve 124 rotates in the reverse direction of the drill chuck, the first joint 119 is separated from the second joint 120 . 119 is engaged with the second adapter 120 .

参见图1所示，在一个实施例中，滚珠126呈圆球状，由第一接合子119的内侧向第一接合子119的外侧观察时，滚槽125基本呈水滴状，这样利于通过滚珠126实现第一接合子119与第二接合子120之间的分离。可选地，滚槽125的数量为3个，滚珠126的数量为3个。需要说明的的是，在一些其它实施例中，滚珠126还可以呈圆锥状或圆台状。Referring to FIG. 1 , in one embodiment, the ball 126 is in the shape of a sphere. When viewed from the inside of the first joint 119 to the outside of the first joint 119 , the rolling groove 125 is basically in the shape of a drop, which facilitates the passage of the ball 126 . The separation between the first joint 119 and the second joint 120 is achieved. Optionally, the number of rolling grooves 125 is three, and the number of rolling balls 126 is three. It should be noted that in some other embodiments, the ball 126 may also be conical or truncated.

参见图1所示，在一些实施例中，钻头头还包括后顶盖129，后顶盖129具有第三通孔，后体104具有第二轴肩117，第二轴肩117靠近后体104的后端，后顶盖129通过第二轴肩117限位于后体104上，第三通孔为腰形孔，后体104的后端的部分具有与腰形孔相仿形的横截面，使得后体104与后顶盖129之间周向固定。后体104上还具有卡槽，卡槽中安装有卡簧132，这样后顶盖129位于卡簧132与弹性复位件123之间，第二接合子120位于第一接合子119与弹性复位件123之间。第一接合子119位于端盖113与第二接合子120之间。Referring to FIG. 1 , in some embodiments, the drill head further includes a rear top cover 129 having a third through hole, and the rear body 104 has a second shoulder 117 , and the second shoulder 117 is close to the rear body 104 The rear end of the rear top cover 129 is limited to the rear body 104 through the second shoulder 117. The third through hole is a waist-shaped hole. The rear end of the rear body 104 has a cross-section that is similar to the waist-shaped hole, so that the rear end of the rear body 104 has a cross-section similar to the waist-shaped hole. The body 104 and the rear top cover 129 are circumferentially fixed. The rear body 104 also has a latching slot, and a circlip 132 is installed in the latching slot, so that the rear top cover 129 is located between the circlip 132 and the elastic return member 123, and the second joint 120 is located between the first joint 119 and the elastic return member. between 123. The first connector 119 is located between the end cover 113 and the second connector 120 .

参见图16、图17、图22和图23所示，在一些其它实施例中，在第一接合子119与前体103周向固定，第一接合子119能够沿前体103的轴向移动，第二接合子120与后体104周向固定，且第二接合子120与后体104轴向固定时，第二接合子具有腰形孔，后体具有与第二接合子上的腰形孔相仿形的横截面，使得后体与第二接合子之间周向固定，同时，第二接合子被后体上的第二轴肩117所限位，后顶盖与后体周向固定；后顶盖129和第二接合子通过卡簧132和第二轴肩轴向限位于后体上，实现第二接合子相对于后体轴向固定。当转动离合转动套124时，带动滚珠126在滚槽125中移动，使滚珠126在滚槽125的一端与另一端之间往复移动，从而实现第一接合子沿前体的轴向移动，以克服弹性复位件的力或在弹性复位件的作用下，使得第一接合子相对于端盖移动，以使第一接合子与第二接合子相分离或相接合，当克服弹性复位件的力，使第一接合子与端盖之间的距离减小时，第一接合子与第二接合子之间相分离，同理，在弹性复位件的作用下，第一接合子与端盖之间的距离能够减小，使得第一接合子与第二接合子相接合。Referring to Figures 16, 17, 22 and 23, in some other embodiments, the first joint 119 is circumferentially fixed to the front body 103, and the first joint 119 can move along the axial direction of the front body 103. , the second joint 120 and the rear body 104 are circumferentially fixed, and when the second joint 120 and the rear body 104 are fixed axially, the second joint has a waist-shaped hole, and the rear body has a waist-shaped hole consistent with the second joint The cross section of the hole is similar to that of the hole, so that the rear body and the second joint are circumferentially fixed. At the same time, the second joint is limited by the second shoulder 117 on the rear body, and the rear top cover and the rear body are circumferentially fixed. ; The rear top cover 129 and the second joint are axially limited to the rear body through the retaining spring 132 and the second shoulder, so that the second joint is axially fixed relative to the rear body. When the clutch rotating sleeve 124 is rotated, the ball 126 is driven to move in the rolling groove 125, so that the ball 126 moves back and forth between one end and the other end of the rolling groove 125, thereby realizing the axial movement of the first joint along the front body to overcome the problem. The force of the elastic return member or the action of the elastic return member causes the first joint to move relative to the end cover, so that the first joint and the second joint are separated or joined. When the force of the elastic return member is overcome, When the distance between the first joint and the end cover is reduced, the first joint and the second joint are separated. Similarly, under the action of the elastic return member, the distance between the first joint and the end cover is reduced. The distance can be reduced so that the first joint engages the second joint.

参见图14所示，在一些实例中，离合转动套124的内壁的两端分别具有限位台阶133，这样使得后顶盖129与一个限位台阶133的台阶面相抵接，以使得前体103的后端的端面与另一个限位台阶133的台阶面相抵接，从而实现对离合转动套124的轴向固定，且离合转动套124能够相对于后体104绕后体104的轴向转动。Referring to FIG. 14 , in some examples, the two ends of the inner wall of the clutch rotation sleeve 124 are respectively provided with limiting steps 133 , so that the rear top cover 129 abuts the step surface of one of the limiting steps 133 , so that the front body 103 The end surface of the rear end abuts the step surface of another limiting step 133, thereby achieving axial fixation of the clutch rotating sleeve 124, and the clutch rotating sleeve 124 can rotate relative to the rear body 104 around the axial direction of the rear body 104.

参见图1图2和图16所示，在一些实施例中，前体的周向具有一个应急孔139或对称设置有多个应急孔，通过螺丝刀或者勾头扳手伸入应急孔实现钻夹头的夹紧或松开。这样设置应急孔后既可以增加钻夹头的初始夹紧力，还可以在圆柄螺丝刀的作用下松开钻夹头。Referring to Figure 1, Figure 2 and Figure 16, in some embodiments, the front body has an emergency hole 139 or multiple emergency holes symmetrically arranged in the circumferential direction, and a screwdriver or hook wrench is inserted into the emergency hole to implement the drill chuck. of clamping or loosening. After setting the emergency hole in this way, the initial clamping force of the drill chuck can be increased, and the drill chuck can also be loosened under the action of a round-shank screwdriver.

在一个或多个实施例中，本公开还提供了一种动力工具，其包括：驱动轴及任一实施例中的钻夹头；驱动轴与后体104相连接，用于驱动后体104转动。后体104的后端的端面具有安装轴孔，安装轴孔与驱动轴相配合，通过驱动轴驱动后体104转动，当第一接合子119与第二接合子120相接合时，实现后体104与前体103的同步转动。安装轴孔200为横截面呈多边形的孔或螺纹孔，驱动轴安装于安装轴孔中。需要说明的是，在一些其它实施例中，后体的后端可以具有外螺纹的柄状结构，或横截面呈多边形的柄状结构，以与驱动轴相配合，实现驱动轴驱动钻夹头转动。In one or more embodiments, the present disclosure also provides a power tool, which includes: a driving shaft and a drill chuck in any embodiment; the driving shaft is connected to the rear body 104 for driving the rear body 104 Turn. The end surface of the rear end of the rear body 104 has a mounting shaft hole. The mounting shaft hole matches the driving shaft. The rear body 104 is driven to rotate by the driving shaft. When the first joint 119 and the second joint 120 are engaged, the rear body 104 is realized. Synchronous rotation with the front body 103 . The mounting shaft hole 200 is a hole or a threaded hole with a polygonal cross section, and the driving shaft is installed in the mounting shaft hole. It should be noted that in some other embodiments, the rear end of the rear body may have an externally threaded handle structure, or a handle structure with a polygonal cross-section, to cooperate with the drive shaft to realize the drive shaft driving the drill chuck. Turn.

以上仅为本公开的可选实施例而已，并不用于限制本公开。对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的权利要求范围之内。The above are only optional embodiments of the present disclosure and are not used to limit the present disclosure. Various modifications and variations may occur to the present disclosure to those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this disclosure shall be included in the scope of the claims of this disclosure.

Claims

一种钻夹头，其特征在于，包括： A drill chuck, which is characterized in that it includes:

夹爪，所述夹爪的数量为多个；Clamps, the number of the clamps is multiple;

前体，所述前体设置有多个夹爪槽，多个所述夹爪槽绕所述前体的轴线均匀分布，所述夹爪槽的导向方向沿第一方向设置，所述第一方向垂直于所述前体的轴线，所述夹爪滑动限位于所述夹爪槽中；以及The precursor is provided with a plurality of clamping claw grooves, the plurality of clamping claw grooves are evenly distributed around the axis of the precursor, the guiding direction of the clamping claw grooves is arranged along the first direction, and the first The direction is perpendicular to the axis of the front body, and the jaw sliding is limited in the jaw groove; and

后体，所述后体用于驱动所述夹爪在所述夹爪槽中沿第一方向移动，以使所述夹爪能够远离或靠近所述前体的轴线。The rear body is used to drive the clamping jaw to move in the first direction in the clamping jaw slot so that the clamping jaw can move away from or approach the axis of the front body.
如权利要求1所述的钻夹头，其特征在于，还包括离合组件，所述离合组件被配置为使所述前体与所述后体之间能够保持相对固定或使所述前体与所述后体之间能够发生相对转动。 The drill chuck of claim 1, further comprising a clutch assembly configured to maintain relative fixation between the front body and the rear body or to enable the front body and the rear body to remain relatively fixed. The rear bodies can rotate relative to each other.
如权利要求2所述的钻夹头，其特征在于，所述第一方向平行于所述前体的径向方向，所述夹爪槽的导向方向与所述前体的径向平行；所述夹爪的一端面具有第一平面螺纹，所述后体的一端面具有与所述第一平面螺纹相配合的第二平面螺纹，以在所述后体相对于所述前体转动时，使得所述夹爪能够沿第一方向移动。 The drill chuck of claim 2, wherein the first direction is parallel to the radial direction of the front body, and the guide direction of the jaw groove is parallel to the radial direction of the front body; An end surface of the clamping jaw has a first plane thread, and an end surface of the rear body has a second plane thread that matches the first plane thread, so that when the rear body rotates relative to the front body, The clamping jaw is allowed to move in the first direction.
如权利要求3所述的钻夹头，其特征在于，所述第一平面螺纹为平面矩形螺纹，所述第二平面螺纹为平面矩形螺纹。 The drill chuck of claim 3, wherein the first plane thread is a plane rectangular thread, and the second plane thread is a plane rectangular thread.
如权利要求1所述的钻夹头，其特征在于，还包括端盖，所述端盖与所述前体的一端的端面固定连接，所述前体具有轴向容纳孔，所述后体通过所述端盖限位于所述轴向容纳孔中，所述端盖具有第一通孔，所述后体相对的另一端穿过所述第一通孔。 The drill chuck according to claim 1, further comprising an end cover fixedly connected to an end surface of one end of the front body, the front body having an axial receiving hole, and the rear body The end cap is limited in the axial receiving hole, the end cap has a first through hole, and the opposite end of the rear body passes through the first through hole.
如权利要求5所述的钻夹头，其特征在于，所述后体具有第一轴肩，所述第一轴肩的端面与所述端盖的端面之间设置有多个滚动体，且所述滚动***于所述轴向容纳孔中；所述第一轴肩的端面和所述端盖的端面中的至少一者与所述滚动体相接触。 The drill chuck of claim 5, wherein the rear body has a first shoulder, and a plurality of rolling elements are provided between the end surface of the first shoulder and the end surface of the end cap, and The rolling element is located in the axial receiving hole; at least one of the end surface of the first shoulder and the end surface of the end cover is in contact with the rolling element.
如权利要求1所述的钻夹头，其特征在于，所述夹爪槽包括依次连通的第一限位部、第二限位部和第三限位部，所述第一限位部的轴向截面的宽度大于所述第二限位部的轴向截面的宽度，所述第二限位部的轴向截面的宽度小于所述第三限位部的轴向截面的宽度； The drill chuck according to claim 1, wherein the jaw groove includes a first limiting part, a second limiting part and a third limiting part that are connected in sequence, and the first limiting part has The width of the axial cross-section is greater than the width of the axial cross-section of the second limiting part, and the width of the axial cross-section of the second limiting part is smaller than the width of the axial cross-section of the third limiting part;

所述夹爪包括依次相连接的第一子部、第二子部和第三子部，所述第一子部与所述第一限位部相适配，所述第二子部与所述第二限位部相适配，所述第三子部与所述第三限位部相适配。The clamping jaw includes a first sub-part, a second sub-part and a third sub-part that are connected in sequence. The first sub-part is adapted to the first limiting part, and the second sub-part is adapted to the first limiting part. The second limiting part is adapted to fit, and the third sub-part is adapted to the third limiting part.
如权利要求2所述的钻夹头，其特征在于，所述离合组件包括第一接合子和第二接合子，所述第一接合子被配置为能够与所述前体同步转动，所述第二接合子被配置为能够与所述后体同步转动； The drill chuck of claim 2, wherein the clutch assembly includes a first engagement element and a second engagement element, the first engagement element being configured to rotate synchronously with the front body, and the The second joint is configured to rotate synchronously with the rear body;

所述第一接合子与所述第二接合子之间具有使所述前体与所述后体之间能够保持相对固定的接合状态；The first joint and the second joint have a joint state that enables the front body and the rear body to maintain a relatively fixed joint state;

所述第一接合子与所述第二接合子之间还具有使所述前体与所述后体之间能够发生相对转动的分离状态。The first joint and the second joint also have a separation state that enables relative rotation between the front body and the rear body.
如权利要求8所述的钻夹头，其特征在于，所述第一接合子与所述第二接合子之间被配置为通过减小间距或增大间距的方式以实现所述接合状态与所述分离状态之间的切换。 The drill chuck of claim 8, wherein the first joint and the second joint are configured to reduce or increase the distance between each other to achieve the joint state and the second joint. switching between the separation states.
如权利要求9所述的钻夹头，其特征在于，所述第一接合子与所述前体周向固定，所述第一接合子与所述前体轴向固定，所述第二接合子与所述后体周向固定，且所述第二接合子能够沿所述后体轴向移动。 The drill chuck of claim 9, wherein the first joint is circumferentially fixed to the front body, the first joint is axially fixed to the front body, and the second joint is fixed to the front body axially. The second joint is circumferentially fixed to the rear body, and the second joint can move axially along the rear body.
如权利要求9所述的钻夹头，其特征在于，所述第一接合子与所述前体周向固定，所述第一接合子能够沿所述前体的轴向移动，所述第二接合子与所述后体周向固定，且所述第二接合子与所述后体轴向固定。 The drill chuck according to claim 9, wherein the first joint is circumferentially fixed to the front body, the first joint is movable along the axial direction of the front body, and the third joint is axially movable along the front body. The two connectors are circumferentially fixed to the rear body, and the second connector is axially fixed to the rear body.
如权利要求10或11所述的钻夹头，其特征在于，还包括弹性复位件，所述弹性复位件被配置为使所述第一接合子与所述第二接合子之间具有由所述分离状态向所述接合状态切换的趋势； The drill chuck according to claim 10 or 11, further comprising an elastic return member configured to ensure that there is a gap between the first joint and the second joint. The tendency of the separation state to switch to the engagement state;

所述第一接合子具有相对的内侧和外侧，所述第二接合子具有相对的内侧和外侧，所述第一接合子的内侧与所述第二接合子的内侧相对，且所述第一接合子的内侧的表面具有第一齿结构，所述第二接合子的内侧的表面具有与所述第一齿结构相啮合的第二齿结构；The first joint has an opposite inner side and an outer side, the second joint has an opposite inner side and an outer side, the inner side of the first joint is opposite to the inner side of the second joint, and the first joint has an inner side opposite to an inner side of the second joint. The inner surface of the joint has a first tooth structure, and the inner surface of the second joint has a second tooth structure that meshes with the first tooth structure;

所述弹性复位件位于所述第一接合子的外侧，或所述弹性复位件位于所述第二接合子的外侧。The elastic return component is located outside the first joint, or the elastic return component is located outside the second joint.
如权利要求9所述的钻夹头，其特征在于，还包括离合转动套，所述前体、所述后体和所述离合转动套同轴设置，所述离合转动套被配置为能够相对于所述后体转动，以改变所述第一接合子与所述第二接合子之间的间距。 The drill chuck according to claim 9, further comprising a clutch rotating sleeve, the front body, the rear body and the clutch rotating sleeve are coaxially arranged, and the clutch rotating sleeve is configured to be able to oppose each other. The rear body is rotated to change the distance between the first joint and the second joint.
如权利要求13所述的钻夹头，其特征在于，所述第一接合子的内侧的表面还具有多个滚槽，所述滚槽的槽深由一端向另一端逐渐增大；所述滚槽容置有滚珠；所述离合转动套的旋转能够使所述滚珠在所述滚槽的一端与另一端之间往复移动，以使所述第一接合子与所述第二接合子之间相接合或分离。 The drill chuck of claim 13, wherein the inner surface of the first joint further has a plurality of rolling grooves, and the groove depth of the rolling grooves gradually increases from one end to the other end; The rolling groove accommodates balls; the rotation of the clutch rotating sleeve can cause the balls to reciprocate between one end and the other end of the rolling groove, so that the first joint and the second joint Interphase joining or separation.
如权利要求5或6所述的钻夹头，其特征在于，所述端盖与第一接合子之间具有凹凸限位结构，以使第一接合子相对于所述端盖轴向运动，且所述第一接合子与所述端盖之间周向固定，其中，所述凹凸限位结构包括：设置于端盖上的第一凸块和第一凹槽，以及设置于第一接合子上的第二凸块和第二凹槽，所述第一凸块伸入所述第二凹槽，所述第二凸块伸入所述第一凹槽。 The drill chuck according to claim 5 or 6, characterized in that there is a concave and convex limiting structure between the end cover and the first joint, so that the first joint can move axially relative to the end cover, And the first joint and the end cover are circumferentially fixed, wherein the concave and convex limiting structure includes: a first bump and a first groove provided on the end cover, and a first joint There are a second protrusion and a second groove on the sub-assembly, the first protrusion extends into the second groove, and the second protrusion extends into the first groove.
如权利要求11所述的钻夹头，其特征在于，所述前体的周向具有一个应急孔，或所述前体的周向对称设置有多个应急孔。 The drill chuck according to claim 11, wherein the front body has one emergency hole in its circumferential direction, or a plurality of emergency holes are symmetrically arranged in the circumferential direction of the front body.
一种动力工具，其特征在于，包括：驱动轴及如权利要求1-16中任一项所述的钻夹头；所述驱动轴与所述后体相连接，用于驱动所述后体转动。 A power tool, characterized in that it includes: a driving shaft and a drill chuck according to any one of claims 1 to 16; the driving shaft is connected to the rear body and is used to drive the rear body Turn.
如权利要求17所述的动力工具，其特征在于，所述后体的后端的端面具有安装轴孔或柄状结构；所述安装轴孔与驱动轴相配合或所述柄状结构与所述驱动轴相配合，以通过驱动轴驱动所述钻夹头转动。 The power tool according to claim 17, wherein the end surface of the rear end of the rear body has a mounting shaft hole or a handle-shaped structure; the mounting shaft hole matches the driving shaft or the handle-shaped structure matches the driving shaft. The driving shaft cooperates to drive the drill chuck to rotate through the driving shaft.
如权利要求18所述的动力工具，其特征在于，所述安装轴孔为螺纹孔或所述安装轴孔的横截面呈多边形的孔； The power tool according to claim 18, wherein the mounting shaft hole is a threaded hole or a hole with a polygonal cross-section;

所述柄状结构具有外螺纹或所述柄状结构的横截面呈多边形。The handle-like structure has an external thread or a cross-section of the handle-like structure is polygonal.