CN108214381A - Direct Action Type accumulation of energy screwdriver - Google Patents

Abstract

The invention discloses a direct-acting energy-storage screwdriver, which comprises a handle, an inner slider and a cutter body. The inside of the handle is a hollow cavity, and the inner wall of the handle is provided with a protruding spiral line. The side is provided with a spiral groove, and the center of the inner slider is provided with a center hole matching the diameter of the cutter body. One end surface of the inner slider is provided with one-way rotating teeth, and the inner slider is connected to the handle through a spiral groove. The inner slider is set on the upper part of the knife body, and is matched with the teeth on the flange on the outer wall of the knife near the upper end surface through one-way rotating teeth. When the knife handle is pressed, the linear motion of the knife handle is converted into Rotational movement of the cutter body. The invention converts the linear motion of the knife handle into the rotation of the knife body through the helical rotation mechanism arranged in the knife handle, realizes the action of pressing and screwing the screw, and is easy to operate. An energy storage mechanism is set on the cutter body, which can first press and store energy, and then convert the stored energy into rotation again to realize the fastening of the screw.

Description

Direct acting energy storage screwdriver

technical field

The invention belongs to the field of hand tools, and in particular relates to a direct-acting energy storage screwdriver.

Background technique

A screwdriver is a tool used to turn a screw to force it into place, usually with a thin wedge-shaped head that fits into a slot or notch in the screw head. In the dialects of Beijing, Tianjin, Hebei, Shanxi, Henan and Shaanxi, it is called "screwdriver", in Anhui, Hubei and other places it is called "screwdriver", in the central and western regions it is called "gaidao", and in the Yangtze River Delta region it is called "rotary chisel". According to different head shapes, screwdrivers can be divided into straight, cross, rice, star (computer), square, hexagonal, Y-shaped, etc. Among them, straight and cross are the most commonly used in our life, such as Installation and maintenance are all used. It can be said that as long as there are screws, a screwdriver will be used. The hexagonal head is not used much, and the hexagonal wrench is commonly used. Like many screws on some machines, there are hexagonal holes, which is convenient for multi-angle force. The size of the star type is not large, and the small star type is often used for dismantling and repairing mobile phones, hard drives, notebooks, etc. We call the small screwdriver a watch screwdriver, and the star type T6, T8, cross PH0, PH00 are commonly used. Phillips screws and Phillips screwdrivers were invented by Henry Phillips in the 1930s. First used on the assembly line of cars. Among them, Phillips screws and Phillips screwdrivers are also called Philips screws and Philips screwdrivers. When in use, align the end of the screwdriver with a special shape to the top recess of the screw and fix it, and then start to rotate the handle. According to the specifications, turning clockwise is tight; turning counterclockwise is loosening (in rare cases the opposite is true).

However, the traditional screwdriver is mainly rotated, and the rotation needs to be obtained continuously, which is relatively rubbing hands. In addition, sometimes the operating space is limited, and it is inconvenient to rotate the handle.

Contents of the invention

The technical problem to be solved by the present invention is to provide a direct-acting energy-storage screwdriver that is easy to operate and can complete the screwing process through linear motion back and forth.

In order to solve the problems referred to above, the technical scheme that the present invention takes is:

A direct-acting energy-storage screwdriver, including a handle, an inner slider and a cutter body, the inside of the handle is a hollow cavity, the inner wall of the handle is provided with a protruding helix, and the outer surface of the inner slider is provided with a helix The center of the inner slider is equipped with a center hole matching the diameter of the cutter body. One side of the inner slider is provided with one-way rotating teeth. The inner slider is connected to the handle through a spiral groove. The inner slider is set On the upper part of the cutter body, the teeth are matched and connected with the teeth on the flange near the upper end surface of the outer wall of the cutter through one-way rotation. When the handle is pressed, the linear motion of the handle is converted into the rotation of the cutter body through the inner slider sports.

Further, it also includes a bottom cover, a top cover and a spring, the center of the top cover is provided with a central hole matched with the knife body, and the top cover is connected to the lower end of the knife handle by threads, and one end of the knife body passes through the top cover and passes through the knife body. The flange on the body connects the cutter body and the handle, the bottom cover is screwed to the upper end of the handle, and the spring is located between the inner slider and the bottom cover.

Further, the bottom cover includes: a bottom cover body, a bearing, a bracket and a friction block, the inner side wall of the bottom cover body is provided with connecting threads, the bracket is connected to the bottom cover body through the bearing, and the friction block is fixed on the bracket Above, the bearing is a disc bearing or a deep groove ball bearing. When it is a disc bearing, the two disc surfaces of the disc bearing are respectively connected with the bottom cover and the bracket by spring force. When it is a deep groove ball When using the bearing, the inner ring and outer ring of the deep groove ball bearing are fixedly connected with the bottom cover and the bracket respectively.

Further, the top cover includes: a top cover body and a bearing. The bearing is a disc bearing or a deep groove ball bearing. The flange and the top cover body are connected together by spring force. When the deep groove ball bearing is used, the inner ring and the outer ring of the deep groove ball bearing are fixedly connected with the top cover body and the flange on the cutter body respectively.

Further, the cutter body includes: an inner fixed shaft, an outer rotating shaft, an oblique bearing, an energy storage sphere, a tension spring, a sliding ring, a fixed ring and a cutter head, wherein the outer rotating shaft is provided with a central hole, and the inner fixed shaft is fixed on the In the center hole of the outer shaft, the energy storage sphere is fixed on the fixed ring through the connecting rod, the fixed ring is fixed on the outer shaft, one end of the tension spring is fixed on the end of the connecting rod close to the energy storage sphere, and the other end of the tension spring is fixed on the sliding ring On the top, the sliding ring is sleeved on the outer shaft, and the cutter head is fixed on the end of the inner fixed shaft.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

The invention converts the linear motion of the knife handle into the rotation of the knife body through the helical rotation mechanism arranged in the knife handle, realizes the action of pressing and screwing the screw, and is easy to operate. An energy storage mechanism is set on the cutter body, which can first press and store energy, and then convert the stored energy into rotation again to realize the fastening of the screw.

Description of drawings

Fig. 1 is a schematic structural view of the direct acting energy storage screwdriver of the present invention;

Fig. 2 is a structural schematic diagram of a screwdriver bottom cover of the present invention;

Fig. 3 is a structural schematic diagram of the top cover of the screwdriver of the present invention;

Fig. 4 is a schematic diagram of the three-dimensional structure of the inner slider of the present invention;

Fig. 5 is a schematic diagram of the structure of the cutter body of the present invention;

Fig. 6 is a structural schematic diagram of the screwdriver of the present invention after energy storage is completed;

Among them: 1. Bottom cover, 2. Knife handle, 3. Inner slider, 4. Top cover, 5. Knife body, 6. Spring, 1-1, Bottom cover body, 1-2, Bearing, 1-3, Bracket, 1-4, friction block, 3-1, one-way rotating teeth, 3-2, spiral groove, 4-1, top cover body, 4-2, rolling bearing, 5-1, inner fixed shaft, 5 -2, outer shaft, 5-3, oblique bearing, 5-4, energy storage sphere, 5-5, tension spring, 5-6, sliding ring, 5-7, fixed ring, 5-8, cutter head.

Detailed ways

Below in conjunction with accompanying drawing, invention is described in further detail:

The invention relates to a screwdriver, which can convert the linear motion of the screwdriver handle into the rotation of the cutter body, so as to realize the screwing in or screwing out of the screw.

As shown in Figures 1 and 4, the present invention includes a knife handle 2, an inner slider 3 and a knife body 5, wherein the interior of the knife handle 2 is a hollow cavity, and the inner wall of the knife handle is provided with a protruding helix, and the inner slide block The outer surface of the block is provided with a helical groove 3-2 matching the helix, the center of the inner slider is provided with a center hole matching the diameter of the cutter body, and one side of the inner slider is provided with unidirectional rotating teeth 3-1 , a flange is arranged on the outer wall of the cutter body close to the upper end surface, and teeth are arranged on the upper end surface of the flange. During assembly, the inner slider is rotationally connected with the tool handle through the spiral groove, and the inner slider is set on the upper part of the tool body, and the teeth on the flange are matched and connected through one-way rotating teeth to form a one-way driving mechanism. When the handle is pressed, the inner slider rotates upward along the helical line in the handle, and the inner slider drives the knife body to rotate, thereby converting the linear motion of the knife handle into the rotational motion of the knife body to realize the screwing in or out of the screw .

In order to facilitate operation, make the present invention more rigorous in overall structure, and facilitate maintenance and use, the present invention also includes a bottom cover 1, a top cover 4 and a spring 6, the center of the top cover is provided with a center hole matching the cutter body, and The top cover is connected to the lower end of the handle by threads, one end of the cutter body passes through the top cover and connects the cutter body and the handle through the flange on the cutter body, the bottom cover is connected to the upper end of the handle by threads, and the spring is located inside between the slider and the bottom cover. With such a perfect structure, the present invention is more convenient to assemble and maintain when in use, the inner slide block is always placed in the knife handle, and the knife body and the knife handle are connected as a whole, and the parts are not easy to be lost. A spring is added between the inner slider and the bottom cover. One function is to prevent the pressure from being difficult to grasp when pressing, resulting in too fast rotation speed. The other function is to return automatically after the pressing is completed without manual operation by using the elastic force of the spring. Back, saving time and effort and convenient operation.

In order to make the structure of the present invention more fit, the operation is more labor-saving, and energy can be stored when pressing, and the accumulated energy can be released when the pressing is stopped, so as to realize the screwing in or out of the screw. The invention further improves the structures of the cutter body, the bottom cover and the top cover.

As shown in Figure 2, the bottom cover includes: a bottom cover body 1-1, a bearing 1-2, a bracket 1-3 and a friction block 1-4, and the inner side wall of the bottom cover body is provided with connecting threads for use The bracket is connected with the bottom cover through bearings, and the friction block is fixed on the bracket. The bearing is a disc bearing or a deep groove ball bearing. When it is a disc bearing, the two sides of the disc bearing The disc surface is respectively connected with the bottom cover and the bracket through spring force. When the deep groove ball bearing is used, the inner ring and the outer ring of the deep groove ball bearing are fixedly connected with the bottom cover and the bracket respectively.

As shown in Figure 3, the top cover includes: a top cover body 4-1 and a bearing 4-2, the bearing is a disc bearing or a deep groove ball bearing, and when it is a disc bearing, the two circles of the disc bearing The disk surface is respectively connected with the flange on the cutter body and the top cover body through spring force. When it is a deep groove ball bearing, the inner ring and outer ring of the deep groove ball bearing are connected with the top cover body and the flange on the cutter body respectively. Lan fixed connection.

As shown in Figure 5, the cutter body includes: an inner fixed shaft 5-1, an outer rotating shaft 5-2, an oblique bearing 5-3, an energy storage ball 5-4, a tension spring 5-5, a sliding ring 5-6, a fixed Ring 5-7 and cutter head 5-8, wherein the outer shaft is provided with a center hole, the inner fixed shaft is fixed in the center hole of the outer shaft through an oblique bearing, the energy storage sphere is fixed on the fixed ring through a connecting rod, and the fixed ring is fixed on On the outer rotating shaft, one end of the tension spring is fixed on the end of the connecting rod close to the energy storage sphere, the other end of the tension spring is fixed on the sliding ring, the sliding ring is sleeved on the outer rotating shaft, and the cutter head is fixed on the end of the inner fixed shaft.

working principle:

When the present invention is used, the cutter head is pressed on the screw or the screw, and the force storage is completed by pressing the handle of the knife. During the process of pressing and storing force, the inner slider moves in the direction of the bottom cover inside the handle through a helix, and the inner slider The linear motion is converted into rotary motion, and the outer rotating shaft and the energy storage sphere on the outer rotating shaft are driven to rotate together by the one-way rotating teeth of the inner slider. Due to the support of the inner spring of the tool handle, the bracket on the bottom cover and the friction block It also rotates with the slider. When the friction block is close to the bottom cover of the handle, the pressing force can be reduced, and the inner slider can be returned to the top cover of the handle by the force of the spring. At this time, due to the unidirectional rotation of the inner slider, the teeth and the flange The teeth are disengaged and will not affect the movement of the outer shaft. After the slider reaches the position of the top cover of the handle, the handle can be pressed again to continue to store power, and the power storage can be completed by reciprocating in this way. Because the rotational momentum increases gradually, the energy storage ball gradually opens (see Fig. 6), and the size of the rotational momentum can be measured according to the size of the energy storage ball opening.

After the power is stored, continue to press the tool handle so that the wedge-shaped part of the front end of the friction block is inserted between the inner fixed shaft and the outer rotating shaft, and the inner fixed shaft and the outer rotating shaft are locked together, so that the movement of the outer rotating shaft is transmitted to the inner fixed shaft and drives The screw moves to complete the screwing in or screwing out process. In the process of screwing in or out, with the rotation of the outer shaft, the energy storage ball will transfer the moment of inertia to the outer shaft to complete the release of energy, and the energy storage ball will start to shrink until the energy of the energy storage ball is not enough to drive .

After use, the cutter body is manually drawn out from the handle, so that the friction block is separated from the inner fixed shaft and the outer rotating shaft.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. All such modifications and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (5)

1. A direct-acting energy-storage screwdriver is characterized in that it comprises a handle of a knife (2), an inner slide block (3) and a cutter body (5), the inside of the handle of a knife is a hollow cavity, and the inner wall of the handle of a knife is set There is a protruding helix, the outer surface of the inner slider (3) is provided with a helical groove, the center of the inner slider is provided with a center hole matching the diameter of the cutter body, and one side of the inner slider is provided with unidirectional rotating teeth (3-1), the inner slider (3) is rotatably connected with the handle (2) through a spiral groove, the inner slider is set on the upper part of the cutter body, and the flange on the outer wall of the cutter is close to the upper end surface through one-way rotating teeth The teeth on the top are matched and connected. When the handle is pressed, the linear motion of the handle is converted into the rotary motion of the knife body through the inner slider. 2. The direct-acting energy-storage screwdriver according to claim 1, characterized in that it also includes a bottom cover (1), a top cover (4) and a spring (6), the center of the top cover is provided with a The center hole, and the top cover is connected to the lower end of the handle by threads, one end of the cutter body passes through the top cover and connects the cutter body and the handle through the flange on the cutter body, and the bottom cover is connected to the upper end of the handle by threads The spring is located between the inner slider and the bottom cover. 3. The direct acting energy storage screwdriver according to claim 2, characterized in that the bottom cover comprises: a bottom cover body (1-1), a bearing (1-2), a bracket (1-3) and Friction block (1-4), the inner side wall of the bottom cover is provided with connecting threads, the bracket is connected with the bottom cover through bearings, the friction block is fixed on the bracket, and the bearing is a disc bearing or a deep groove ball Bearing, when it is a disc bearing, the two disc surfaces of the disc bearing are respectively connected with the bottom cover and the bracket by spring force; when it is a deep groove ball bearing, the inner ring and outer ring of the deep groove ball bearing They are respectively fixedly connected with the bottom cover body and the bracket. 4. The direct acting energy storage screwdriver according to claim 2, characterized in that, the top cover comprises: a top cover body (4-1) and a rolling bearing (4-2), and the rolling bearing is a disc bearing or For deep groove ball bearings, when it is a disc bearing, the two disc surfaces of the disc bearing are respectively connected to the flange on the cutter body and the top cover through spring force. When it is a deep groove ball bearing, the deep groove ball The inner ring and the outer ring of the bearing are respectively fixedly connected with the top cover body and the flange on the cutter body. 5. A direct-acting energy-storage screwdriver according to claim 2, characterized in that the cutter body comprises: an inner fixed shaft (5-1), an outer rotating shaft (5-2), an oblique bearing (5-3 ), energy storage sphere (5-4), tension spring (5-5), slip ring (5-6), fixed ring (5-7) and cutter head (5-8), wherein the outer shaft (5-2 ) is provided with a central hole, the inner fixed shaft (5-1) is fixed in the central hole of the outer rotating shaft (5-2) through the oblique bearing (5-3), the energy storage sphere is fixed on the fixed ring through the connecting rod, and the fixed ring Fixed on the outer rotating shaft, one end of the tension spring is fixed on the end of the connecting rod close to the energy storage sphere, the other end of the tension spring is fixed on the sliding ring, the sliding ring is sleeved on the outer rotating shaft, and the cutter head is fixed on the end of the inner fixed shaft.