KR102428502B1 - Axial impact electric driver adapter - Google Patents

Abstract

The present invention relates to an axial impact electric driver adapter, and more particularly, a planetary gear part for reducing the rotational speed of a motor, a first connection part coupled to the planetary gear part, and a collision for converting the rotational motion of the first connection part into a linear motion The second connection part that converts the linear motion of the shaft part and the collision shaft part into rotational motion, and the socket mounting part that is coupled to the second connection part to allow rotational or linear motion. It is an invention that can be dismantled non-destructively.

Description

Axial Impact Electric Driver Adapter {AXIAL IMPACT ELECTRIC DRIVER ADAPTER}

The present invention relates to an axial impact electric driver adapter, and more particularly, a planetary gear part for reducing the rotational speed of a motor, a first connection part coupled to the planetary gear part, and a collision for converting the rotational motion of the first connection part into a linear motion The second connection part that converts the linear motion of the shaft part and the collision shaft part into rotational motion, and the socket mounting part that is coupled to the second connection part to allow rotational or linear motion. It is an invention that can be dismantled non-destructively.

The electric screwdriver currently used mainly tightens and loosens the fastener with simple rotational torque.

A fastener is a mechanical element used to fix building materials or mechanical parts, and is used in all industrial fields such as construction, railway, and shipbuilding. Galling may also occur.

In the process of tightening fasteners of similar composition and surface hardness, cold welding occurs due to the increase in pressure and friction between the contact surfaces of the threads, and the surfaces between the threads stick together.

After the occurrence of this sticking phenomenon, non-destructive resolution becomes impossible, resulting in economic loss due to additional processing.

A case in which a conventional fastener is fixed will be described with reference to FIG. 1 .

Starting from the contact surface of the thread (2) of the bolt (1), the two materials are fixed over time by vibration, heat and chemical reaction.

After the occurrence of the sticking phenomenon, non-destructive resolution becomes impossible, causing economic loss due to additional processing.

In order to solve this, repeated impact is applied to the contact surface of the screw thread 2 in the axial direction to disassemble the fixation and then rotate at a certain angle to solve the fastening of the bolt 1 .

In addition, if the fixed bolt (1) is forcibly loosened using only a simple rotational torque, it may be broken or the head of the bolt (1) may be worn out.

Another example of the fastener being stuck is as follows.

In the case of ships, since the operating environment is in seawater (salt water), they are always exposed to corrosive environments.

Ions dissolved in seawater become a medium for electron transfer and promote metal oxidation. Corrosion products are also generated on the metal surface by metabolites secreted by the proliferation of some bacterial and fungal species contained in seawater.

In order to prevent corrosion, a sacrificial anode method, which artificially attaches zinc to prevent corrosion of steel, is used.

Looking at the following example, the injector clamp bolt is a bolt (1) that fixes the injector mounted on the engine.

When the vehicle is driven, the screw thread of the bolt 1 mounted on the engine head is fixed due to engine heat, vibration, moisture penetration, etc., and the injector may be damaged.

When the fuel explodes in the combustion chamber, the temperature rises to 600-800 degrees Celsius. Therefore, structurally, the bolt 1 near the injector that injects the fuel receives a lot of heat, and the sticking phenomenon easily occurs.

The engine block uses a lot of aluminum for weight reduction, but in consideration of the tensile strength, the bolt 1 uses plated steel.

When the plating applied to the bolt (1) is peeled off due to engine vibration or heat, a galvanic phenomenon, which is contact corrosion due to a potential difference between dissimilar metals, occurs.

The galvanic phenomenon is corrosion in which dissimilar metals come into contact in an electrolyte solution and when there is a potential difference between them, electrons move to promote oxidation of one metal.

Due to this, the aluminum constituting the engine block is oxidized and changed to aluminum oxide, resulting in sticking.

Aluminum oxide has a higher mechanical strength than iron oxide, so the strength of fixation is also stronger. If the screw of the fixed bolt (1) is broken, a situation in which the engine head must be replaced occurs, in which case a huge cost is generated.

Therefore, there is a need for a method for solving the sticking in a non-destructive way and minimizing the process added to the sticking problem.

JP 6213627 B1

The present invention relates to an axial impact electric driver adapter, and more particularly, a planetary gear part for reducing the rotational speed of a motor, a first connection part coupled to the planetary gear part, and a collision for converting the rotational motion of the first connection part into a linear motion The second connection part that converts the linear motion of the shaft part and the collision shaft part into rotational motion, and the socket mounting part that is coupled to the second connection part to allow rotational or linear motion. It is an invention that can be dismantled non-destructively.

In order to achieve the object of the present invention, the axial impact electric driver adapter according to the present invention is a planetary gear portion for reducing the rotational speed of a motor, a first connection portion coupled to the planetary gear portion, and converting the rotational motion of the first connection portion into a linear motion It includes a collision shaft portion, a second connection portion for converting the linear motion of the collision shaft portion into rotational motion, and a socket mounting portion coupled to the second connection portion to enable rotational or linear motion.

In addition, the first connection part according to the present invention includes a first connection part groove helically recessed on the outer surface, a ball rotatable in place inside the collision shaft part, and when the first connection part rotates, the ball rotates along the groove, , corresponding to the collision shaft portion moves forward or backward.

In addition, the first connector according to the present invention is formed at one point of the groove of the first connector helically recessed in the outer surface, further comprising a guide groove having a width longer than that of the first connector groove, the power tool transmits the power of the motor When received, the collision shaft part moves to the rear, and while the collision shaft part moves from the rear to the front side, the ball is stagnant in the guide groove for a predetermined time.

In addition, the collision shaft according to the present invention includes a spring coupled to the outside, the spring is compressed when the collision shaft moves backward, and the elastic recovery force of the spring is transmitted to the collision shaft when the collision shaft moves forward.

In addition, the collision shaft according to the present invention, the collision shaft key formed to protrude from the outer surface of the front, and a slot formed diagonally to the second connection portion, the collision shaft key penetrates through the slot.

In addition, when the collision shaft part according to the present invention moves backward, the collision shaft key is moved to the upper side of the slot so that the second connection part rotates clockwise, and when the collision shaft part moves forward, the collision shaft key is moved to the lower side of the slot 2 The connector rotates counterclockwise.

In addition, a pair of ratchet gears coupled to the inside of the second connection part according to the present invention, a pair of ratchet gears coupled to the outside of the socket mounting part, and a ratchet wheel part engaged with the ratchet gear, and the collision shaft part are reversed so that the second connection part is clocked direction, the second connection part and the socket mounting part rotate at the same time, and when the collision shaft part advances and the second connection part rotates counterclockwise, the socket mounting part is fixed, but only the second connection part rotates.

According to the present invention, when the collision shaft part advances, the socket mounting part gives an impact in the axial direction toward the fixed bolt, and when the collision shaft part moves backward, the socket mounting part rotates clockwise to non-destructively dismantle the fixed bolt. It works.

In addition, when the auxiliary handle is attached to the vicinity of the second connection part to solve the fixing of the bolt, there is an effect of increasing the fastening force of the fixed bolt and the socket mounting part.

In addition, there is an effect of reducing the rotational speed by using the planetary gear to prevent wear or damage of the bolt.

In addition, since the tip of the socket mounting part is formed to mount box sockets of various standards, it has the advantage that it can be widely used in areas that require fixing fixation of fasteners, such as maintenance and construction sites, from real life areas.

Figure 1 shows the state of the conventional fixed bolts.
2 shows an internal view of the present invention.
Figure 3 shows a state in which the case of the present invention is combined.
Figure 4 shows an exploded perspective view according to the present invention.
5 and 6 show a cross-section of the collision shaft portion and the first connection portion reciprocating forward and backward by the ball according to the present invention.
7 is a view showing a first connector groove formed on the outer surface of the first connector according to the present invention.
8 and 9 are views showing the front and rear collision shaft portion and the rotating second connection portion according to the present invention.
10 and 11 are views illustrating the second connection part and the socket mounting part in accordance with the present invention as viewed from the front.

Hereinafter, with reference to the drawings of the present invention will be described in detail. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those of ordinary skill in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numbers refer to like elements throughout.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

In the present invention, the term 'axial direction' refers to a longitudinal direction in FIG. 2 .

The axial impact electric driver adapter according to the present invention is shown in the form of an adapter that can be mounted on a commercially available electric driver, and FIG. 2 shows a state in which the internal components are combined except for the case.

As shown in FIG. 2 , the axial impact electric driver adapter is a planetary gear part 100 , a first connection part 200 , a collision shaft part 300 , an impact spring part 400 , a second connection part 500 and a socket mounting part 600 . includes

Although not shown in the drawing, a planetary gear shaft 110 is configured at the rear of the planetary gear part 100, so that the motor is coupled to the planetary gear shaft 110 and the rotation of the motor from the chuck of the power tool is the planetary gear part 100 is given as an input, the rotation speed of the motor is reduced by the planetary gear unit 100 .

The first connection part 200 is coupled to the front of the planetary gear part 100 , and the collision shaft part 300 is coupled to the front of the first connection part 200 .

The second connection part 500 is coupled to the front of the collision shaft part 300 , and the socket mounting part 600 is coupled to the front of the second connection part 500 .

The impact spring part 400 is coupled to the outside of the collision shaft part 300 , and the collision shaft key 310 protruding from the front of the collision shaft part 300 is in the slot 510 formed in the rear of the second connection part 500 . is penetrated

A pair of ratchet spring grooves 520 are formed on the outside of the front of the second connection part, and a part of the socket mounting part 600 coupled to the front of the second connection part 500 protrudes to the outside.

A first ratchet gear part 530 and a second ratchet gear part 540 are coupled to the pair of ratchet spring grooves 520, respectively, and a detailed description thereof will be described later.

A gap spring 620 is coupled to the rear of the socket mounting part 600 coupled to the front of the second connection part 500 .

The gap spring 620 serves to prevent the first ratchet gear part 530 and the second ratchet gear part 540 from contacting the adapter case 700 when the adapter case 700 is covered on the outside.

In addition, the distal end of the socket mounting unit 600 is formed in a rectangular shape to mount a box socket of various standards.

3 shows a state in which the adapter case 700 is coupled.

It is wrapped with the adapter case 700 so that the internal structure is not visible to the outside of the internal mechanical element, and a part of the socket mounting part 600 protrudes to the outside of the adapter case 700 .

Due to the 'funnel' shape toward the rear, the diameter of the portion where the planetary gear unit 100 is formed increases, and the diameter decreases toward the front.

In addition, the auxiliary handle portion 710 is attached to the vicinity of the second connection portion 500, and the portion to which the auxiliary handle portion 710 is attached is different in diameter from the front and rear of the adapter case 700, so that the step has a step. is created

When the auxiliary handle part 710 wants to solve the sticking of the bolt 1, hold the auxiliary handle part 710 by hand and place the adapter on the fixed bolt 1, the fixed bolt 1 and the socket There is an effect of increasing the fastening force of the mounting part 600 .

Figure 4 shows an exploded perspective view according to the present invention.

First, although not shown in the drawing, when the motor is coupled to the planetary gear shaft 110 and the rotation of the motor from the chuck of the power tool is given as an input to the planetary gear unit 100, the planetary gear unit 100 rotates the motor speed is slowed down

The conventional electric driver has a high output rotational speed, and thus, due to over-rotation of the motor, wear or damage of the fixed bolt 1 occurs.

To solve this, the rotation speed is reduced by using the planetary gear part 100 to prevent wear or damage of the bolt 1 .

The first connection part 200 has a cylindrical shape, the rear of the first connection part 200 is fitted in the center of the planetary gear part 100, and the front of the first connection part 200 is inside the collision shaft part 300 to be described later. is inserted

In addition, since the diameter of the rear of the first connection part 200 is smaller than the diameter of the front, a step is formed.

In addition, a spiral first connector groove 210 and a guide groove 220 of a wide portion extending from the first connector groove 210 are recessed in the outer surface of the first connector 200 .

This will be described later with reference to FIG. 7 for a detailed description.

Next, the collision shaft part 300 includes a collision shaft key 310 and a ball 320 .

The ball 320 is positioned in a groove formed inside the collision shaft part 300 , and one side of the ball 320 protrudes, and the other side is formed by being constrained by the groove formed inside the collision shaft part 300 .

That is, the ball 320 is positioned between the inner side of the collision shaft part 300 and the first connector groove 210 , and the ball 320 is in contact with the first connector groove 210 of the rotating first connector 200 . and moves along the first connector groove 210 .

When the first connection part 200 rotates, the ball 320 moves along the first connection part groove 210 , and the collision shaft part 300 moves forward or backward in response thereto.

A shock spring unit 400 is coupled to the rear of the collision shaft unit 300, and a plurality of collision shaft keys 310 are formed spaced apart from each other at a predetermined distance on the outer circumferential surface of the front of the collision shaft unit 300. .

Since the diameter of the rear side to which the impact spring part 400 of the collision shaft part 300 is coupled is larger than the size of the front diameter where the collision shaft key 310 is formed, a step is formed.

The collision shaft key 310 penetrates through the slot 510 formed at the rear of the second connection part 500 to be described later.

A detailed description thereof will be described later with reference to FIGS. 8 and 9 .

Next, FIGS. 5 and 6 show a cross section of the collision shaft part 300 moving forward by the ball 320 and the first connection part 200 coupled to the collision shaft part 300 .

First, it is assumed that when the power of the motor is transmitted to the planetary gear unit 100 , it is started with reference to FIG. 6 .

Referring to FIG. 5 , the first connection part 200 is coupled to the front of the planetary gear part 100 , and the collision shaft part 300 is coupled to the front of the first connection part 200 .

When the power of the motor is transmitted to the planetary gear unit 100 , the first connection unit 200 starts to rotate.

At this time, when the ball 320 located inside the collision shaft part 300 moves along the first connection part groove 210 formed on the outer surface of the rotating first connection part 200 , the collision shaft part 300 moves backward.

6 is a view when the collision shaft part 300 is advanced, and is composed of the same components as in FIG. 5 .

When the collision shaft part 300 moves backward, the elastic recovery force of the impact spring part 400 that has been compressed is transmitted to the collision shaft part 300 so that the collision shaft part 300 moves forward.

While the collision shaft part 300 moves forward from the reverse, the ball 320 stays in the guide groove 220 formed on the outer surface of the first connection part 200 for a predetermined time.

When the impact shaft portion 300 advances by the elastic recovery force of the impact spring portion 400 , the ball 320 rotates in the reverse direction along the first connection portion groove 210 again, and the first connection portion 200 and the impact shaft portion 300 ) are spaced apart from each other, and a hollow part is formed in the collision shaft part 300 .

Thereafter, the collision shaft unit 300 repeats backward and forward movement, and as the collision shaft unit 300 repeats backward and forward movement, the ball 320 also rotates along the first connector groove 210 .

The rotational motion by the power of the motor is converted into a linear motion of the collision shaft part 300 as the ball 320 rotates along the first connection part groove 210 .

7 illustrates a groove formed on the outer surface of the first connection part 200 .

A spiral first connector groove 210 is recessed at one end of the outer surface of the first connector 200 , and a guide groove 220 having a wider portion than the first connector groove 210 is recessed at the other end.

When the collision shaft part 300 moves backward, the ball 320 rotates along the first connection part groove 210 .

While the collision shaft part 300 moves forward from the reverse, the ball 320 stays in the guide groove 220 for a predetermined time.

When the collision shaft part 300 moves forward, the ball 320 can rotate in the reverse direction along the guide groove 220 .

That is, since the guide groove 220 is present, the ball 320 can rotate along the first connector groove 210 and the guide groove 220 as the collision shaft part 300 moves backward and forward.

That is, due to the compression and relaxation of the shock spring 400 , the collision shaft 300 moves backward and forward, and accordingly, the ball 320 rotates along the first connector groove 210 and the guide groove 220 . , the rotational motion of the motor is converted into a linear motion of the collision shaft unit 300 .

The second connection part 500 includes a slot 510 , a ratchet spring groove 520 , a first ratchet gear part 530 , and a second ratchet gear part 540 .

The first ratchet gear unit 530 includes a first ratchet gear 530a and a first ratchet spring 530b, and the second ratchet gear unit 540 includes a second ratchet gear 540a and a second ratchet spring ( 540b).

The rear of the second connection part 500 is coupled to the front of the collision shaft part 300 , and a plurality of slots 510 having a diagonal shape are formed in the rear of the second connection part 500 .

A pair of ratchet spring grooves 520 are provided in front of the second connection part 500 , and the first ratchet spring 530b and the second ratchet spring 540b are coupled to each other.

A first ratchet spring 530b and a second ratchet spring 540b are inserted into the respective ratchet spring grooves 520 inside the front of the second connection part 500, and the first ratchet spring 530b and the second ratchet spring 540b are inserted. Steps are formed on the upper and lower sides of the spring 540b, so that deformation of the spring can be prevented.

The first ratchet spring 530b is coupled to the first ratchet gear 530a, and the second ratchet spring 540b is coupled to the second ratchet gear 540a.

The first ratchet gear 530a and the second ratchet gear 540a may come into contact with a ratchet wheel 610 to be described later, and have a tooth shape.

The second ratchet gear 540a has a shape opposite to that of the first ratchet gear 530a.

In addition, a step is formed because the diameter of the front and the rear of the second connection part 500 are different from each other.

The socket mounting unit 600 is coupled to the front of the second connection unit 500 , and one side of the socket mounting unit 600 is inserted into the second connection unit 500 .

The socket mount 600 includes a ratchet wheel 610 and a gap spring 620 .

The ratchet wheel 610 is formed at the rear of the socket mounting part 600 and is engaged with the first ratchet gear 530a and the second ratchet gear 540a.

The gap spring 620 is formed in contact with the ratchet wheel 610, and serves to prevent the outer case from contacting the first ratchet gear 530a and the second ratchet gear 540a when the outer case is fitted.

The tip of the socket mounting part 600 has a rectangular shape, and allows box sockets of various standards to be mounted on the tip.

Next, FIGS. 8 and 9 show the collision shaft part 300 moving forward and backward and the second connection part 500 rotating.

First, referring to FIG. 8 , the collision shaft key 310 protruding from the outer surface of the front of the first connection part 200 is penetrated through the slot 510 diagonally formed in the rear of the second connection part 500 .

If the rotation of the first connection part 200 continues, the axial reciprocating motion is repeatedly performed.

At this time, when the collision shaft part 300 moves backward, the impact spring part 400 is compressed and the collision shaft key 310 of the second connection part 500 moves upwards of the slot 510 so that the second connection part ( 500) rotates clockwise.

At this time, the front of the first connecting portion 200 and the rear of the second connecting portion 500 do not come into contact with each other at a predetermined interval.

Referring to FIG. 9 , the configuration through which the collision shaft key 310 penetrates the slot 510 is the same.

When the elastic recovery force of the shock spring unit 400 is transmitted to the collision shaft unit 300 and the collision shaft unit 300 advances, the collision shaft key 310 formed in front of the collision shaft unit 300 moves to the lower side of the slot 510 . As it is moved, the second connection part 500 rotates counterclockwise.

At this time, the step of the collision shaft portion 300 is in contact with the front of the second connection portion (500).

That is, the collision shaft key 310 moves upward and downward of the slot 510 , and accordingly, as the second connection part 500 rotates clockwise and counterclockwise, the linear motion of the collision shaft part 300 rotates. converted to exercise.

Next, FIGS. 10 and 11 show the second connection part 500 and the socket mounting part 600 as viewed from the front.

10 is a view when the collision shaft part 300 has moved backward.

In FIG. 10 , the first ratchet spring 530b and the second ratchet spring 540b are respectively inserted into the pair of ratchet spring grooves 520 .

Steps are formed on the upper and lower sides of the first ratchet spring 530b and the second ratchet spring 540b, so that deformation of the spring can be prevented.

The first ratchet spring 530b is coupled to the first ratchet gear 530a, and the second ratchet spring 540b is coupled to the second ratchet gear 540a.

The first ratchet gear unit 530 and the second ratchet gear unit 540 are configured inside the second connection unit 500 , and the ratchet wheel 610 is coupled to the outside of the socket mounting unit 600 .

When the collision shaft part 300 is reversed and the second connection part 500 rotates clockwise, the first ratchet gear 530a and the ratchet wheel 610 are engaged, and the socket mounting part 600 and the second connection part 500 are rotate at the same time

11 is a view when the collision shaft part 300 is advanced, and is the same as the components of FIG. 10 .

When the collision shaft part 300 advances and the second connection part 500 rotates counterclockwise, the first ratchet gear 530a and the ratchet wheel 610 do not engage.

Unlike when the collision shaft part 300 moves backward, the socket mounting part 600 is fixed, but only the second connection part 500 rotates counterclockwise.

Next, the operating mechanism of the axial impact electric screwdriver adapter will be described.

First, the motor rotates and transmits the power from the chuck of the power tool to the planetary gear unit 100 .

The planetary gear part 100 reduces the rotation speed of the motor, and when the first connection part 200 coupled to the planetary gear part 100 rotates, the first connection part groove 210 recessed in the outer surface of the first connection part 200 . The ball 320 rotates along the

The ball 320 rotates while being fixed along the first connector groove 210 , and the collision shaft part 300 moves backward.

At this time, the rotational motion of the first connection part 200 is converted into a linear motion of the collision shaft part 300 .

When the collision shaft part 300 moves backward, the impact spring part 400 coupled to the outside of the collision shaft part 300 is compressed, and the collision shaft key 310 protruded from the outer surface of the collision shaft part 300 is formed with a second It is moved upward of the slot 510 formed in the connection part 500 .

Thereafter, the first ratchet gear 530a and the second ratchet gear 540a and the ratchet wheel 610 coupled to the inside of the second connection part 500 are engaged, so that the second connection part 500 and the socket mounting part 600 are engaged. rotates clockwise at the same time.

While the collision shaft part 300 moves forward from backward, the elastic recovery force of the impact spring part 400 is transmitted to the collision shaft part 300 , and the ball 320 stays in the guide groove 220 for a predetermined time.

When the collision shaft part 300 advances, the ball 320 can rotate in the reverse direction along the guide groove 220 , and the collision shaft key 310 is moved to the lower side of the slot 510 .

Then, when the second connection part 500 rotates counterclockwise, the first ratchet gear 530a and the second ratchet gear 540a and the ratchet wheel 610 do not mesh with each other, so that only the second connection part 500 is half Rotating in a clockwise direction, the socket mounting unit 600 is fixed.

That is, when the collision shaft part 300 advances, it gives an axial impact toward the bolt 1 to which the socket mounting part 600 is fixed.

When the collision shaft part 300 moves backward, the socket mounting part 600 is positioned on the fixed bolt 1 , and rotates in the reverse screw direction to loosen the fixed bolt 1 .

Therefore, the axial impact electric driver adapter has the advantage of solving the sticking of the bolt 1 in a non-destructive way, and minimizing the process added to the sticking problem.

In addition, since the tip of the socket mounting part 600 is formed to mount box sockets of various standards, it can be used in a wide range from real life areas to areas that require fixing fixation of fasteners, such as maintenance and construction sites.

In addition, when the axial impact electric driver adapter is used multiple times, harmful bacteria may multiply and corrosion may occur.

In order to prevent this problem, it is preferable that a coating layer is formed on the surfaces of the socket mounting part 600 and the adapter case 700 .

The coating layer (not shown) is to be coated using a coating composition, and the coating layer using the coating composition may exhibit an anti-corrosion effect. Specifically, by forming a coating layer on the surfaces of the socket mounting unit 600 and the adapter case 700 by the coating layer, external exposure of the surfaces of the socket mounting unit 600 and the adapter case 700 is prevented, and the socket mounting unit 600 ) and a metal having a higher ionization tendency than the surface of the adapter case 700 , it is possible to prevent corrosion of the surfaces of the socket mounting part 600 and the adapter case 700 .

More specifically, the coating composition of the present invention may include a siloxane-based compound represented by the following Chemical Formula 1; organic solvents, metal compounds and amine compounds:

[Formula 1]

Here, n is an integer from 1 to 100.

When the coating layer is formed on the surfaces of the socket mounting part 600 and the adapter case 700 by using the coating composition of the present invention, the adhesion to the surfaces of the socket mounting part 600 and the adapter case 700 is excellent, The coating layer is not easily peeled off by this, and as it contains a metal compound having a higher ionization tendency than the surfaces of the socket mounting part 600 and the adapter case 700, an excellent anti-corrosion effect may be exhibited.

Specifically, since the siloxane-based compound contains a mercapto group as a substituent, it not only exhibits excellent adhesion with the surfaces of the socket mounting part 600 and the adapter case 700, but also maintains the viscosity of the coating composition at a certain level and is molded. It can improve performance and increase stability.

The metal compound serves as an erosion and corrosion inhibitor that blocks contact with moisture, salt or oxygen. Here, the metal compound may use a metal having a higher ionization tendency than iron in order to act as an erosion and corrosion inhibitor. That is, a metal or alloy such as aluminum (Al), magnesium (Mg), or zinc (Zn) may be used, and zinc (Zn) is mainly used.

The particle size of the metal compound may be 0.1 to 10㎛. When the particle size of the metal compound is 0.1 μm or more, the manufacturing cost of the metal compound can be reduced, and when the particle size of the metal compound is 10 μm or less, the metal particles can be uniformly dispersed.

The organic solvent is selected from the group consisting of methyl ethyl ketone (MEK), toluene, and mixtures thereof, and preferably methyl ethyl ketone may be used, but is not limited thereto.

The amine compound may include modified aliphatic amines or tertiary amines, and specifically, trimethylamine or aniline may be used. The amine compound may be included in the coating composition to prevent cracking or peeling of the coating film. That is, by increasing the adhesion of the coating layer, the effect of preventing cracking or peeling of the coating film according to use is excellent.

The coating composition may further include a stabilizer as other additives, and the stabilizer may include a UV absorber, an antioxidant, etc., but is not limited to the above examples and may be used without limitation.

For forming the coating layer, the coating composition may include a siloxane-based compound represented by Formula 1 below; organic solvents, metal compounds and amine compounds.

The coating composition may include 40 to 60 parts by weight of the siloxane compound represented by Formula 1, 20 to 40 parts by weight of the metal compound, and 5 to 15 parts by weight of the amine compound, based on 100 parts by weight of the organic solvent. In the case of the above range, a synergistic effect is expressed to the extent that the water repellency effect due to the interaction of each component has a critical significance, and when it is out of the above range, the synergistic effect is rapidly reduced or almost absent.

More preferably, the viscosity of the coating composition is 1500 to 1800 cP, and when the viscosity is less than 1500 cP, when it is applied to the surface of the socket mounting part 600 and the adapter case 700, it flows down and the formation of the coating layer is not easy. There is a problem in that the formation of a uniform coating layer is not easy when it exceeds 1800 cP.

[ production example 1: Preparation of coating layer]

1. Preparation of coating composition

A coating composition was prepared by mixing methyl ethyl ketone with a siloxane-based compound represented by the following Chemical Formula 1, zinc and trimethylamine:

[Formula 1]

Here, n is an integer from 1 to 100.

A more specific composition of the coating composition is shown in Table 1 below.

TX1 TX2 TX3 TX4 TX5 organic solvent 100 100 100 100 100 polysiloxane 30 40 50 60 70 metal compound 10 20 30 40 50 amine compounds One 5 10 15 20

(unit weight parts)2. Preparation of coating layer

An experiment was conducted by using aluminum, which is typically a metal material that easily corrodes, instead of the surfaces of the socket mounting part 600 and the adapter case 700 .

The coating composition of DX1 to DX5 was applied to one surface of 10×10 cm aluminum, and then cured to form a coating layer.

Experimental example

1. Surface Appraisal of Appearance

Due to the difference in viscosity of the coating composition, after the coating layer was prepared, sensory evaluation was performed on whether a uniform surface was formed. Whether or not a uniform coating layer was formed was evaluated, and evaluation was performed according to the following criteria.

○: uniform coating layer formation

×: Formation of a non-uniform coating layer

TX1 TX2 TX3 TX4 TX5 sensory evaluation × ○ ○ ○ ×

When the coating layer is formed, if the viscosity is less than a certain level, flow occurs on the surfaces of the socket mounting part 600 and the adapter case 700, so that it is difficult to form a uniform coating layer after the curing process. Accordingly, there may be a problem in that the production yield is lowered. In addition, even when the viscosity is too high, it is difficult to uniformly apply the composition to form a uniform coating layer.

2. Measurement of corrosion properties

In order to confirm the corrosion characteristics, an aluminum plate without a coating layer was used as a control, and a corrosion resistance test was performed using an aluminum plate with a coating layer of TX1 to TX5.

The aluminum plate was immersed in a beaker containing a 10 wt% CuCl2 aqueous solution, and the degree of corrosion was checked over time.

If the generation of hydrogen gas is confirmed with the naked eye, it will mean that corrosion occurs, and it was confirmed whether corrosion occurred until 24 hours had elapsed.

○: Corrosion

×: Corrosion does not occur

TX1 TX2 TX3 TX4 TX5 control corrosion occurs ○ × × × × ○

As a result of the experiment, it was confirmed that the control aluminum plate was placed in a beaker and hydrogen gas was generated shortly thereafter, and copper was precipitated in less than 1 hour. In the case of TX1, hydrogen gas was generated after 3 hours, and copper precipitation was confirmed after 6 hours.

In the case of other coating layers, corrosion did not occur even after 24 hours had elapsed, confirming that there was an excellent effect in preventing corrosion.

Although the detailed description of the present invention described has been described with reference to the preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the technical field will It will be understood that various modifications and variations of the present invention can be made without departing from the technical scope. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: bolt,
2: thread,
100: planetary gear unit,
200: a first connection part;
210: first connector groove,
220: guide groove;
300: collision shaft part,
310: collision axis key;
320: ball,
400: shock spring part,
500: a second connection part;
510: slot,
520: ratchet spring groove,
530: first ratchet gear unit,
530a: first ratchet gear,
530b: a first ratchet spring;
540: second ratchet gear unit,
540a: second ratchet gear;
540b: second ratchet spring;
600: socket mounting part,
610: ratchet wheel,
620: gap spring;
700: adapter case part,
710: a handle part.

Claims (8)

In the electric driver adapter coupled to the power tool to receive the power of the motor,
a planetary gear unit for decelerating the rotation speed of the motor;
a first connection part coupled to the planetary gear part;
a collision shaft unit converting the rotational motion of the first connection part into a linear motion;
a second connection part for converting the linear motion of the collision shaft part into a rotational motion; and
and a socket mounting part coupled to the second connection part and capable of rotational or linear motion;
The first connection portion includes a groove of the first connection portion helically recessed in the outer surface,
Includes; ball rotatable in place on the inside of the collision shaft portion;
When the first connection part rotates, the ball rotates along the groove of the first connection part,
In response, the collision shaft portion moves forward or backward,
A guide groove formed at one point of the groove of the first connection part spirally recessed in the outer surface of the first connection part, the guide groove having a width longer than that of the first connection part groove;
When the power tool receives the power of the motor, the collision shaft portion moves to the rear,
While the collision shaft part moves from the rear to the front, the ball is stagnant in the guide groove for a certain time,
The collision shaft portion,
Including; a spring part coupled to the outside;
When the collision shaft part moves backward, the spring part is compressed,
When the collision shaft part advances, the elastic recovery force of the spring part is transmitted to the collision shaft part,
The collision shaft portion,
Including; collision shaft key formed to protrude from the outer surface of the front;
Including; a slot formed in a diagonal direction to the second connection part,
The impact shaft key penetrates through the slot,
When the collision shaft part moves backward,
The collision shaft key is moved to the upper side of the slot, and the second connection part rotates clockwise,
When the collision shaft part advances,
The collision shaft key is moved to the lower side of the slot, and the second connection part rotates counterclockwise,
a pair of ratchet gears coupled to the inside of the second connection part; and
Doedoe coupled to the outside of the socket mounting portion, a ratchet wheel engaged with the ratchet gear; includes,
When the collision shaft part reverses and the second connection part rotates clockwise, the second connection part and the socket mounting part rotate at the same time,
When the collision shaft part advances and the second connection part rotates counterclockwise, the socket mounting part is fixed, and only the second connection part rotates,
The second connection part,
a pair of ratchet spring grooves formed in front of the second connection part;
a first ratchet spring respectively inserted into the pair of ratchet spring grooves; and a second ratchet spring; and
Doedoe formed on upper and lower sides of the first ratchet spring and the second ratchet spring, a step capable of preventing deformation of the spring part; includes;
The pair of ratchet gears,
a first ratchet gear coupled to the first ratchet spring; and
a second ratchet gear coupled to the second ratchet spring; and
The socket mounting unit,
Further comprising; a gap spring formed in contact with the ratchet wheel;
The gap spring is to space apart between the pair of ratchet gears and the outer case coupled to the outside of the electric driver adapter
Axial impact electric screwdriver adapter.
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