阅读说明：本技术 钻尾钉钻 (Drill tail nail drill ) 是由 黄思忠 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种钻尾钉钻,涉及一种钻尾钉工具领域。本发明解决目前钻尾钉帽对钻尾钉把持不牢固及施工人员费时及难以准确定位的问题。该钻尾钉钻设置有外壳一、外壳二,每个齿条槽内均安装一个齿条,齿条后端设置有控摆端头；每个齿条位于齿条啃齿端对应设置一个齿摆。使用本发明安全可靠、省时省力且能实现准确定位。(The invention discloses a drill tail nail drill, and relates to the field of drill tail nail tools. The invention solves the problems that the existing drill tail nail cap is not firm in holding the drill tail nail, and the construction personnel is time-consuming and difficult to accurately position. The drill tail nail drill is provided with a first shell and a second shell, a rack is arranged in each rack groove, and a swing control end is arranged at the rear end of each rack; and a tooth pendulum is correspondingly arranged at the tooth biting end of each rack. The invention is safe and reliable, saves time and labor and can realize accurate positioning.)

1. A tail drilling nail drill comprises a power shaft, wherein a nail cap seat is arranged at the front end of the power shaft, a magnet is arranged at the inner end of the nail cap seat, a spring is arranged at the rear end of the power shaft, a shaft sleeve is sleeved on the power shaft, a key bar is arranged between the power shaft and the shaft sleeve, and a key bar groove is formed in the shaft sleeve; the drill tail nail drill is provided with a first shell and a second shell; the gear rack is characterized in that a plurality of rack grooves parallel to the power shaft are arranged in the shaft sleeve at equal intervals, a clamping ring groove is arranged at the front end of the rack groove on the inner side of the shaft sleeve, a spring groove is arranged at the rear end of the rack groove, and a rack is arranged in each rack groove; a plurality of rack gnawing teeth are arranged on the plane of the front end of each rack, and a swing control end is arranged at the rear end of each rack; a first spring is arranged at the front end of the swing control end, and a second spring is arranged at the rear end of the swing control end; each rack is provided with a tooth pendulum corresponding to the tooth biting end of the rack, the tooth pendulum is rectangular, one end of the tooth pendulum is provided with a snap ring hole, the outer side of the snap ring hole is semicircular, and the outer edge of the snap ring hole is provided with a plurality of tooth pendulum biting teeth; a clamping ring is arranged in the clamping ring groove, and each tooth pendulum is sleeved on the clamping ring at equal intervals through a clamping ring hole; the shaft sleeve is provided with a shaft sleeve bearing groove, bearing steel balls are placed in the shaft sleeve bearing groove, the first shell is provided with a shell bearing groove corresponding to the bearing steel balls, the upper end of the first shell is embedded in the inner wall of the second shell, and the upper end of the second shell is fixed on the drill body.

2. The drill tail nail drill according to claim 1, wherein the inner side wall of the shaft sleeve is provided with four rack grooves and four spring grooves which are parallel to the power shaft, each rack groove is correspondingly provided with one rack, each spring groove is correspondingly provided with a first spring and a second spring, each rack is correspondingly provided with one tooth pendulum, and the four tooth pendulums are connected in series through a clamping ring.

Technical Field

The invention relates to the field of a drill tail nail tool, in particular to a drill tail nail drill.

Background

The existing drilling tail nail is usually used by being arranged on a tool of a U-shaped nail cap seat with a handle, a magnet is embedded in the U-shaped nail cap seat, the tool is arranged on an electric hand drill to complete a construction procedure during use, although the tool has certain adsorption force on a drilling tail nail cap, the control of the tool on the drilling tail nail is infirm, certain thrust is needed when the electric hand drill rotates at high speed to drive the drilling tail nail into a material surface, if the center of gravity support control is not good, the drilling tail nail rotates rapidly, so that the drilling tail nail falls off to endanger high-altitude operation personnel, and meanwhile, the electric hand drill can also pound heavily on the material surface to damage the material surface, so that the existing tool for operating the drilling tail nail has great potential safety hazard.

The invention patent application of 'safety protection device for installing outer hexagonal self-tapping screw with cushion drill tail' with application number 201810446495.9 and 'drill tail screw nail drill' with application number 201911237405.6 solves the problem that the drill tail nail is tightly held by a movable jaw during drilling so as to eliminate potential safety hazards, but an operator needs to pull a sleeve on a drill bit backwards when using an electric hand drill to install each drill tail nail, so that the drill tail nail can be inserted into a nail cap seat after the movable jaw opens, and the operation needs to be repeated once when each drill tail nail is drilled, so that the structural design of the movable jaw not only brings troubles to the operator during construction, but also affects the working efficiency; meanwhile, the movable clamping jaws are installed in the sleeve through pins, and pin holes in the movable clamping jaws need to be provided with movable clamping jaw openings and closed movable spaces, so that the drill tail nail is not firmly held by the movable clamping jaws, namely the drill tail nail shakes, the positioning is difficult for constructors, and the drill tail nail cannot be accurately positioned.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a drill tail nail drill which is safe, reliable, time-saving and labor-saving and can realize accurate positioning.

In order to achieve the purpose, the invention provides a drill tail nail drill which comprises a power shaft, wherein a nail cap seat is arranged at the front end of the power shaft, a magnet is arranged at the inner end of the nail cap seat, a spring is arranged at the rear end of the power shaft, a shaft sleeve is sleeved on the power shaft, a key bar is arranged between the power shaft and the shaft sleeve, and a key bar groove is formed in the shaft sleeve; the drill tail nail drill is provided with a first shell and a second shell; a plurality of rack grooves parallel to the power shaft are arranged in the shaft sleeve at equal intervals, a clamping ring groove is arranged at the front end of the rack groove on the inner side of the shaft sleeve, a spring groove is arranged at the rear end of the rack groove, and a rack is arranged in each rack groove; a plurality of rack gnawing teeth are arranged on the plane of the front end of each rack, and a swing control end is arranged at the rear end of each rack; a first spring is arranged at the front end of the swing control end, and a second spring is arranged at the rear end of the swing control end; each rack is provided with a tooth pendulum corresponding to the tooth biting end of the rack, the tooth pendulum is rectangular, one end of the tooth pendulum is provided with a snap ring hole, the outer side of the snap ring hole is semicircular, and the outer edge of the snap ring hole is provided with a plurality of tooth pendulum biting teeth; a clamping ring is arranged in the clamping ring groove, and each tooth pendulum is sleeved on the clamping ring at equal intervals through a clamping ring hole; the shaft sleeve is provided with a shaft sleeve bearing groove, bearing steel balls are placed in the shaft sleeve bearing groove, the first shell is provided with a shell bearing groove corresponding to the bearing steel balls, the upper end of the first shell is embedded in the inner wall of the second shell, and the upper end of the second shell is fixed on the drill body.

The inner side wall of the shaft sleeve is provided with four rack grooves and four spring grooves which are parallel to the power shaft, each rack groove is correspondingly provided with one rack, each spring groove is correspondingly provided with one spring I and one spring II, each rack is correspondingly provided with one tooth pendulum respectively, and the four tooth pendulums are connected in series through one snap ring.

The invention has the beneficial effects that: the drill tail nail drill is safe and reliable and is convenient to install; the rack tooth pendulum replaces a movable clamping jaw to directly insert the drill tail nail into the nail cap seat, time and labor are saved, the firmness of the drill tail nail on the nail cap seat is realized, and the problem that the drill tail nail shakes due to the movable clamping jaw is overcome.

The drill tail nail drill of the invention is further explained with the attached drawings.

Drawings

FIG. 1 is a schematic perspective view of a drill tail nail drill of the present invention;

FIG. 2 is a schematic view showing the development of the inner wall structure of the sleeve portion of the present invention;

FIG. 3 is a disassembled view of the rack, snap ring and gear pendulum of the present invention.

In the figure: 1. the power shaft comprises a power shaft body, 2, a nail cap seat, 3, a spring, 4, a shaft sleeve, 5, a spline, 6, a spline groove, 7, a rack groove, 8, a clamping ring groove, 9, a spring groove, 10, a rack, 11, a rack gnawing tooth, 12, a swing control end, 13, a spring I, 14, a spring II, 15, a tooth swing, 16, a clamping ring hole, 17, a clamping ring, 18, a tooth swing gnawing tooth, 19, a shaft sleeve bearing groove, 20, a bearing steel ball, 21, a shell bearing groove, 22, a shell I, 23, a shell II, 24, a drill body, 25 and a drill tail nail.

Detailed Description

As shown in fig. 1, 2 and 3, the drill tail nail drill of the present embodiment includes a power shaft 1, a nail cap base 2 is disposed at the front end of the power shaft 1, a magnet is disposed at the inner end of the nail cap base 2, a spring 3 is mounted at the rear end of the power shaft 1, a shaft sleeve 4 is sleeved on the power shaft 1, a key bar 5 is disposed between the power shaft 1 and the shaft sleeve 4, a key bar groove 6 is disposed in the shaft sleeve 4, and the drill tail nail drill is provided with a first housing 22 and a second housing 23. Four rack grooves 7 parallel to the power shaft 1 are arranged in the shaft sleeve 4 at equal intervals, a clamping ring groove 8 is arranged at the front end of the rack groove 7 on the inner side of the shaft sleeve 4, a spring groove 9 is arranged at the rear end of the rack groove 7, and a rack 10 is arranged in each rack groove 7. A plurality of rack gnawing teeth 11 are arranged on the plane of the front end of each rack 10, and a swing control end 12 is arranged at the rear end of each rack 10. A first spring 13 is arranged at the front end of the swing control end head 12, and a second spring 14 is arranged at the rear end of the swing control end head 12. Each rack is correspondingly provided with a tooth pendulum 15 at the end where the rack gnaws the teeth 11, the tooth pendulum 15 is rectangular, one end of the tooth pendulum 15 is provided with a snap ring hole 16, the outer side of the snap ring hole 16 is semicircular, and the outer edge of the snap ring hole 16 is provided with a plurality of tooth pendulum gnawing teeth 18. A snap ring 17 is arranged in the snap ring groove 8, and each tooth pendulum 15 is sleeved on the snap ring 17 at equal distance through a snap ring hole 16. The shaft sleeve 4 is provided with a shaft sleeve bearing groove 19, bearing steel balls 20 are placed in the shaft sleeve bearing groove 19, the first shell 22 is provided with a shell bearing groove 21 corresponding to the bearing steel balls 20, the upper end of the first shell 22 is embedded in the inner wall of the second shell 23, and the upper end of the second shell 23 is fixed on a drill body 24.

The structural principle of the invention is as follows: the shaft sleeve 4 can rotate at a high speed by transmitting power through the key bars 5 on the power shaft 1, meanwhile, the shaft sleeve 4 contracts or rebounds under the force of the spring 3 to move upwards or downwards to drive other components to work, and the shaft sleeve 4 can rotate at a high speed relative to the static shell 22 through the bearing steel balls 20. The upper end of the first shell 22 is embedded into the second shell 23, and the first shell 22 can only move upwards or downwards relative to the second shell 23 and cannot rotate leftwards or rightwards. The rack 10 is placed in the rack groove 7 and is contracted or rebounded to move upwards or downwards through a first spring 13 at the front end of the swing control end 12 and a second spring 14 at the rear end; the four tooth pendulums 15 are connected in series by the snap ring 17 and then embedded into the snap ring groove 8, each tooth pendulum 15 is corresponding to the rack 10, namely, the tooth pendulum gnawing teeth 18 on the tooth pendulums 15 are corresponding to the rack gnawing teeth 11 of the rack 10 and are in a vertical meshing state.

The working principle of the invention is as follows: when the drilling tail nail driving device is used, in the process that the drilling tail nail 25 is directly inserted into the nail cap seat 2, the four tooth pendulums 15 are inclined towards the inside of the rack groove 7 after being pushed by the nail cap of the drilling tail nail 25, the rack 10 meshed with the tooth pendulum gnawing teeth 18 on the tooth pendulums 15 is driven to slide outwards, and then the swing control end head 12 arranged on the rack 10 compresses the first spring 13; when the nail cap of the drill nail 25 is continuously inserted into the nail cap seat 2, the tooth pendulums 15 are released, at the moment, the first spring 13 rebounds the swing control end 12, the rack 10 drives the tooth pendulums 15 to reset after being stressed, and at the moment, the four tooth pendulums 15 also clamp the drill nail 25. In construction, after a drill tail nail 25 is driven into a material surface, a first shell 22 contracts towards the inside of a second shell 23 when contacting the material surface and being blocked, meanwhile, the first shell 22 contracts, a first bearing steel ball 20 drives a shaft sleeve 4 to move inwards to cause a spring 3 to contract, so that a nail cap seat 2 pushes the drill tail nail 25 to slide out, the nail cap seat 2 slides out to force four tooth pendulums 15 to incline towards the inside of a rack groove 7, at the moment, a tooth pendulum gnawing tooth 18 meshed with a rack gnawing tooth 11 causes a rack 10 to slide inwards, a pendulum control end 12 on the rack 10 forces a second spring 14 to contract, the first shell 22 is separated from the material surface after the process of driving the drill tail nail 25 into the material surface is finished, at the moment, the spring 3 rebounds to cause the shaft sleeve 4 to slide outwards under the force, the shaft sleeve 4 slides out to drive the first shell 22 to reset through the bearing steel ball 20, and the shaft sleeve 4 slides out simultaneously, and the nail cap seat 2 resets; with the resetting of the nail cap seat 2, the four tooth pendulums 15 are released, and the second spring 14 rebounds to enable the swing control end head 12 to drive the rack 10 and the tooth pendulums 15 to reset accordingly, so that the operation of driving the drill tail nail 25 into the material surface is completed.

The drill tail nail drill uses the tooth pendulums 15 to replace movable clamping jaws, so that the drill tail nail 25 is directly inserted into the electric hand drill nail cap seat 2, and time and labor are saved; but also the firmness of the self-drilling nail 25 in the drill bit, i.e. the problem that the self-drilling nail 25 shakes in the drill bit due to the use of movable claws is overcome.