JP2022076963A - Socket adapter - Google Patents

Abstract

To provide a driver bit-through socket adapter that is usable for fastening and removal of bolts and nuts different in size in addition to a driver bit.SOLUTION: A socket adapter connectable to an electric screwdriver 100 with a driver bit 200 mounted thereon includes: a cylindrical adapter body part 23 which has a through-hole 21 of a polygonal cross section into which the driver bit is fitted and inserted, is settable by being moved between a retreated position in which an ear tip 201 of the driver bit projects from one end of the through-hole and an advanced position in which the ear tip of the driver bit is hidden from the one end of the through hole, and is rotatable integrally with the driver bit; tool attachment part 20a of a polygonal cross section which is arranged on a peripheral part of the adapter body part on one end side and to which a first tool is attachable; and a tool connection part 20b arranged on the outer peripheral part of the adapter body part on the other end side and connectable and attachable to a socket part of a second tool.SELECTED DRAWING: Figure 9

Description

The present invention relates to a socket adapter, and more particularly to a socket adapter suitable for replaceably attaching various driver bits or the like to an electric screwdriver, a manual screwdriver, or a manual ratchet wrench. ..

Conventionally, commonly used drivers include a fixed screwdriver in which a driver bit is integrally attached to a handle (grip part), or a replacement driver in which several types of driver bits are detachably attached to a common handle. .. However, any driver has the inconvenience that it cannot be used for anything other than a screwdriver.

Therefore, a driver socket that can be used for assembling various bolts and nuts by attaching it to a driver, or a driver socket that can be used as a socket wrench for removal has also been proposed (for example, a patent). See Document 1).

Japanese Unexamined Patent Publication No. 2000-218557

For example, Patent Document 1 discloses a socket 12 configured so as to be able to set a forward forward position and a backward backward position with respect to the main shaft 11. The reference numeral is the reference numeral in Patent Document 1. A bit (second tool end) 14 which is a tip of a screwdriver for tightening a screw 13 having a cross hole is formed at the tip of the spindle (first tool shaft) 11, and the bit 14 is formed. , The socket 12 is configured to be usable when it is set in the retracted position. Further, a hexagonal socket opening (first tool end) 16 corresponding to a bolt or nut of a predetermined size is formed at the tip of the socket 12, and the socket opening 16 sets the socket 12 in the forward position. It is configured to be used when you do.

However, the socket 12 described in Patent Document 1 has a problem that it is limited to the use of a tool that matches the shape of the socket opening 16 of the attached socket.

Therefore, the present invention is a driver bit-through socket that can be used as a socket adapter for tightening and removing bolts and nuts of different sizes, in addition to the plus and minus driver bits used for tightening screws and the like. A technical problem to be solved arises in order to provide an adapter, and an object of the present invention is to solve this problem.

The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a socket adapter that can be connected to a driver bit and has a polygonal cross section into which the driver bit is fitted and inserted. It has a through hole and can move between a retracted position where the tip of the driver bit protrudes from one end of the through hole and a forward position where the tip of the driver bit is hidden from one end of the through hole. A tubular adapter body that can rotate integrally with the driver bit, a tool mounting part with a polygonal cross section that is provided on the outer peripheral portion on one end side of the adapter body and can mount the first tool, and the adapter body. Provided is a socket adapter having a tool connecting portion having a polygonal cross section, which is provided on the outer peripheral portion on the other end side of the tool and can be connected and attached to the socket portion of the second tool.

According to this configuration, when the adapter body is moved to the retracted position on the driver bit while it is still attached to the outer circumference of the driver bit, the plus or minus tip formed on the tip of the driver bit becomes visible. It sticks out from one end of the adapter body. Then, using the plus or minus tip of the screwdriver bit, it is possible to perform work such as bolt tightening.
Also, if the adapter body is moved to the forward position along the axis of the driver bit while it is still attached to the outer circumference of the driver bit, one end of the adapter body protrudes from the tip of the driver bit to hide the tip. .. Then, a first tool such as various sockets, which can be used for tightening and removing bolts and nuts of different sizes, can be replaceably attached to the outer peripheral portion of one end of the adapter main body. Alternatively, in the polygonal through hole exposed on one end side of the adapter body, support for a third tool such as a socket or 6.3-axis tip part that can be tightened or removed from bolts and nuts of different sizes. The parts can be attached interchangeably, and bolts and nuts can be tightened and removed manually or electrically with a screwdriver or the like.
Further, when the adapter main body is further moved to the forward position side, the socket adapter can be removed from the driver bit.
Further, if the socket adapter is removed from the outer circumference of the driver bit and the tool connecting portion is connected and attached to the socket portion of a second tool such as a ratchet wrench that is manually operated, the socket adapter is integrated with the ratchet wrench. I can get it. Then, when the support shaft portion of the first tool such as various sockets or the polygonal through hole of the adapter main body is replaceably attached to one end side of the adapter main body, the support shaft portion of the third tool is manually attached together with the ratchet wrench or the like. You can tighten and remove bolts and nuts with.
Also, if the driver bit breaks, the socket adapter can be left as it is and only the driver bit needs to be replaced.

According to a second aspect of the present invention, in the configuration according to the first aspect, the adapter main body is a ball that can be fitted and locked in a retaining groove provided on the outer periphery of the driver bit, and the ball. A retaining means having a slide cover that can release a force that restrains the movement of the driver bit in the direction along the axis of the driver bit by pressing the adapter body portion toward the axis center of the driver bit. Provide a socket adapter to be equipped.

According to this configuration, the ball is pressed in the axial center direction of the driver bit at a predetermined position on the driver bit in which the hole and the retaining groove are fitted and locked by holding by the retaining means to press the socket adapter. , Can be used in a state of being securely constrained to the driver bit.

According to the third aspect of the present invention, in the configuration according to the second aspect, the slide cover is movable in the axial direction along the outer periphery of the adapter main body and has an inner peripheral surface that can face the ball. The slide cover has a locking protrusion and an unlocking recess formed side by side in the moving direction of the slide cover, and the slide cover is moved to a lock position where the locking protrusion faces the ball. When the ball is fitted and locked in the retaining groove to lock the movement of the adapter main body and the unlocking recess is moved to the unlock position facing the ball, the ball Provides a socket adapter that allows the movement of the adapter body portion by releasing the force fitted and locked in the retaining groove.

According to this configuration, when the slide cover is moved in the axial direction, the socket adapter is securely restrained and used at a predetermined position on the driver bit in which the ball and the groove for preventing the driver bit from coming off are fitted and locked. can do. Also, when moving the adapter body in the direction along the axis center of the driver bit, if the adapter body is pushed in the direction along the axis center, the ball will escape into the unlocking recess and the restraint will be released, and the adapter body will be released. It can be moved relative to the driver bit.

The invention according to claim 4 provides a socket adapter in the configuration according to claim 3, wherein the retaining holding means has a spring means for constantly moving the slide cover to the locked position.

According to this configuration, when the slide cover is not moved, the slide cover is automatically returned to the lock position where the locking protrusion faces the ball by the moving urging force of the spring means. As a result, when the sleeve portion is not moved, it is automatically locked by the retaining means, so that it is not forgotten to re-lock after releasing the lock once.

The invention according to claim 5 has the configuration according to any one of claims 1 to 4, wherein the adapter main body is fitted in a retaining groove provided on the outer periphery of the driver bit. Provided is a socket adapter comprising a retaining means for holding a ball that can be stopped and a leaf spring portion having a C-shaped cross section that constantly applies a force for pressing the ball toward the axis center of the driver bit to the ball. ..

According to this configuration, when the movement of the adapter main body is operated, when the ball tries to escape from the retaining groove, the leaf spring portion having a C-shaped cross section is elastically deformed and spreads outward while spreading outward. Escape in the direction away from the retaining groove. As a result, the ball can smoothly escape from the inside of the groove for preventing the ball from coming off. Further, when the ball reaches the position corresponding to the retaining groove, the leaf spring portion having a C-shaped cross section elastically returns and narrows, and the ball is held in the retaining groove by the elastic force of the leaf spring portion. be able to.

The invention according to claim 6 provides a socket adapter in which the tool connecting portion is interchangeably attached to a ratchet wrench in the configuration according to any one of claims 1 to 5.

According to this configuration, the tool connecting portion of the adapter main body is connected to the ratchet wrench and attached, and the first tool such as various sockets is replaceably attached to the tool attaching portion of the adapter main body, or the adapter main body is attached. When the support part of the third tool such as various sockets is replaceably attached to the polygonal through hole exposed on one end side, the first tool or the second tool is used together with the ratchet wrench and the like. You can manually tighten and remove bolts and nuts.

The invention according to claim 7 is a socket in which, in the configuration according to claim 6, a support shaft portion of a third tool is replaceably attached to the through hole with one end side of the through hole as a socket opening. Provide an adapter.

According to this configuration, the socket adapter may be left attached to the forward position of the outer circumference of the driver bit, or the socket adapter may be removed from the outer circumference of the driver bit and the tool connecting portion may be manually operated, for example, in a ratchet wrench. In the state of being connected to the socket part of the second tool and attached, the support shaft of the third tool such as the 6.35 shaft tip part is inserted into the polygonal through hole exposed on one end side of the adapter body part. If the part is attached interchangeably, the bolts and nuts can be manually tightened and removed together with the ratchet wrench and the like.

According to the invention, in addition to the plus and minus screwdriver bits used for tightening screws and the like, it can be used for various purposes as a socket wrench or the like that can be used for tightening and removing bolts and nuts of different sizes.
Even if the driver bit is damaged, if the driver bit is replaced, the socket adapter can be replaced with the replaced driver bit and used as it is, so that the financial burden can be reduced.

It is a front view of the socket adapter shown as the 1st Example which concerns on embodiment of this invention. Same as above is a side view of the socket adapter. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is an external perspective view of the socket adapter of the same as above. It is an exploded perspective view of the same as above. It is a perspective view which shows the use state which attached the same socket adapter to the predetermined position of the conventional driver bit. It is a side view which shows only the socket adapter in the cross-sectional view in the use state shown in FIG. It is external perspective view of the electric screwdriver which shows the use state which attached the socket adapter to the conventional screwdriver bit. FIG. 8 is a side view of the same electric screwdriver as shown in a cross section of the same socket adapter in the usage state of FIG. FIG. 3 is a perspective view of an electric screwdriver showing a usage state in which a socket as a first tool is attached to a tool attachment portion of the socket adapter and the socket adapter is arranged at a retracted position on a driver bit. FIG. 10 is a side view of the same as above electric screwdriver showing a cross section of the same as above socket adapter and the same as above socket in the usage state of FIG. FIG. 3 is a perspective view of an electric screwdriver showing a state in which a socket as a first tool is attached to a tool mounting portion of the socket adapter and the socket adapter is arranged at a forward position on a driver bit. FIG. 12 is a side view of the same as above electric screwdriver showing a cross section of the same as above socket adapter and the same as above socket in the usage state of FIG. It is a perspective view of the same ratchet wrench which is arranged in the retracted position on the conventional driver bit, and shows the use state which connected the tool connecting part to the socket part of the conventional ratchet wrench, and attached the same socket adapter. FIG. 14 is a side view of the same ratchet wrench showing a cross section of the same socket adapter in the usage state of FIG. It is a perspective view of the same-mentioned ratchet wrench which shows the use state which connected the tool connecting part to the socket part of the conventional ratchet wrench, and attached the socket adapter of the same as above. FIG. 16 is a side view of the same ratchet wrench showing a cross section of the same socket adapter in the usage state of FIG. It is a front view of the socket adapter shown as one modification which concerns on embodiment of this invention. It is a side view of the socket adapter shown as a modification of the same as above. FIG. 8 is a cross-sectional view taken along the line BB of FIG. It is external perspective view of the socket adapter shown as one modification of the same as above. It is an exploded perspective view of the socket shown as one modification of the same as above. It is a front view which shows the state which the socket adapter shown as one modification of the same is attached to the predetermined position of the conventional driver bit. It is a side view which shows the state which the socket adapter shown as one modification of the same is attached to the predetermined position of the conventional driver bit. FIG. 24 is a cross-sectional view taken along the line CC of FIG. 23 showing a cross section of only the socket adapter of the same in the used state shown in FIG.

The present invention provides a screwdriver bit-through socket adapter that can be used as a socket adapter for tightening and removing bolts and nuts of different sizes, in addition to the plus and minus screwdriver bits used for tightening screws and the like. A socket adapter that can be connected to a driver bit to achieve the purpose, and has a through hole with a polygonal cross section into which the driver bit is fitted and inserted, and the tip of the driver bit is formed from one end of the through hole. A tubular adapter body that can move between the protruding retracted position and the forward position where the tip of the driver bit is hidden from one end of the through hole, and that can rotate integrally with the driver bit, and the adapter body. A tool mounting portion having a polygonal cross section provided on the outer peripheral portion on one end side of the portion and capable of mounting the first tool, and a tool mounting portion provided on the outer peripheral portion on the other end side of the adapter main body portion and connected to the socket portion of the second tool. This was achieved by having a tool connecting part with a polygonal cross section that can be attached.

Hereinafter, an embodiment according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following examples, when the number, numerical value, quantity, range, etc. of the components are referred to, the specific number is used unless it is explicitly stated or the principle is clearly limited to a specific number. It is not limited, and may be more than or less than a specific number.

In addition, when referring to the shape and positional relationship of components, etc., unless otherwise specified or when it is considered that it is not clearly the case in principle, those that are substantially similar to or similar to the shape, etc. are used. include.

In addition, the drawings may be exaggerated by enlarging the characteristic parts in order to make the features easy to understand, and the dimensional ratios and the like of the components are not always the same as the actual ones. Further, in the cross-sectional view, hatching of some components may be omitted in order to make the cross-sectional structure of the components easy to understand.

Further, in the following description, the expressions indicating the directions such as up / down and left / right are not absolute and are appropriate when each part of the socket adapter of the present invention is drawn, but the posture is appropriate. If it changes, it should be changed and interpreted according to the change in posture. In addition, the same elements are designated by the same reference numerals throughout the description of the embodiment.

1 to 5 show an embodiment of the socket adapter 20 according to the embodiment of the present invention. The socket adapter 20 of the present invention shown in FIGS. 1 to 5 enables use in a wide variety of applications. As a typical example of the usable one, as shown in FIGS. 6 to 13, for example, it is attached to the driver bit 200 and used together with a replaceable electric screwdriver 100 or a manual screwdriver. Alternatively, as shown in FIGS. 14 to 17, the tool connecting portion 20b of the socket adapter 20 can be attached to the socket portion 401 of the manual ratchet wrench 400 and used together with the ratchet wrench 400.

That is, FIGS. 6 and 7 show that the socket adapter 20 of the present invention is attached to one end of a conventionally used replaceable screwdriver bit 200, and the driver bit 200 is used as the electric screwdriver 100 shown in FIGS. 8 to 13. , Is attached to a manual screwdriver (not shown) and used, or is attached to the ratchet wrench 400 shown in FIGS. 14 and 15 for use.

The driver bit 200 shown in FIGS. 6 to 15 is a general-purpose, for example, 6.35 mm hexagonal shaft (commonly referred to as “6.35 shaft”). The driver bit 200 has tip 201 (tip 201a, tip 201b) at both ends of the bit body portion 202 having a hexagonal cross section, and the retaining peripheral groove 203 (retaining peripheral groove 203a, respectively) is provided at the rear portion of the tip 201. A retaining peripheral groove 203b) is formed. The tip 201a is for a cross-shaped hole and the tip 201b is for a one (minus) -shaped hole, or the tip 201a is a plus for a large screw and the tip 201b is a plus for a machine screw. It may be. In this embodiment, the tip 201a is for a large screw, for example, it is used by pressing it against the head of a large screw with a cross-shaped hole, and the tip 201b is pressed against the head of a machine screw with a cross hole. It is intended to be used. Then, by changing the direction of the tip 201 and attaching it to the electric screwdriver 100 or the ratchet wrench 400, the screw with a cross hole of different sizes can be attached / detached, or the screw with a cross hole (plus) and one (minus) can be attached. Allows installation and removal work of screws with ratchet holes.

Although the detailed structure of the socket adapter 20 will be described later, the socket adapter 20 slides on the outer periphery of the bit body portion 202 of the driver bit 200 along the axis center of the driver bit 200, and the ball 22 is the driver bit. Alternative between the forward position (state shown in FIG. 7) fitted and locked in the retaining peripheral groove 203a of 200 and the retracted position fitted and locked in the retaining peripheral groove 203b. Can be moved to. Then, in the moved forward position or backward position, the driver bit 200 is held releasably so that it can rotate integrally with the driver bit 200.

FIG. 8 is an external perspective view of the electric screwdriver 100 showing a usage state in which the socket adapter 20 of the present invention is attached to the driver bit 200, and FIG. 9 shows a cross-sectional view of only the socket adapter 20 in the usage state of FIG. It is a side view of the electric screwdriver 100.

The electric screwdriver 100 shown in FIGS. 8 and 9 has a support portion (the other end side) of the driver bit 200 having a tip 201 at the tip of a bit chuck hole (not shown) as a socket portion provided at the tip of the rotary spindle 101. ) Is inserted, and the support portion (base) of the driver bit 200 is fixedly connected to the chuck in the bit chuck hole to rotate the driver bit 200 integrally with the rotary spindle 101. Further, in FIGS. 8 and 9, the socket adapter 20 has a polygonal cross section (hexagon in this embodiment) provided so as to penetrate the front and rear ends of the socket adapter 20 along the axis center of the socket adapter 20. ), The driver bit 200 is fitted and inserted into the through hole 21 so as to be movable on the outer circumference of the driver bit 200 along the axial direction and to be rotatable integrally with the driver bit 200. Then, in FIGS. 8 and 9, the socket adapter 20 is held on the outer periphery of the driver bit 200 at a predetermined position (retracted position) on the other end side of the driver bit 200 near the rotation spindle 101 of the electric driver 100. ing. As will be described later, the socket adapter 20 at this time is restrained and held at a predetermined position of the driver bit 200 by pressing the ball 22 against the outer peripheral surface of the driver bit 200 by the slide cover 26.

The electric screwdriver 100 shown in FIGS. 10 and 11 is attached to the tool mounting portion 20a of the socket adapter 20 attached to the driver bit 200 which is chuck-fixed and connected to the rotary spindle 101 of the electric screwdriver 100 shown in FIGS. 8 and 9. Further, it is a power tool unit equipped with a socket 300 as a first tool. Further, in FIGS. 10 and 11, the socket adapter 20 is held on the outer periphery of the driver bit 200 in a state of being arranged on the retracted position side of the driver bit 200 close to the rotation spindle 101 of the electric driver 100. The tip 201 of the driver bit 200 is projected from one end side of the socket 300, and the tip 201 is pressed against the head of the screw with a cross hole so that the screw with a cross hole can be attached and detached. There is.

In the electric screwdriver 100 shown in FIGS. 10 and 11, the electric screwdriver 100 shown in FIGS. 12 and 13 has a socket adapter 20 to which a socket 300 as a first tool is attached on the outer periphery of the driver bit 200. The ball 22 is arranged on the front end position side of the 200, and the ball 22 is fitted and locked in the retaining peripheral groove 203a of the bit main body portion 202 to be held. In the electric screwdriver 100 shown in FIGS. 12 and 13, the socket port 300a of the socket 300 is arranged at a position protruding forward from the tip 201 of the driver bit 200. In this arrangement of the socket 300, for example, sockets of various sizes corresponding to square bolts and nuts of various sizes can be interchangeably attached to the socket opening 300a so that the square bolts and nuts can be attached and detached. .. As the socket 300, those for various square bolts and nuts having different sizes are prepared, and it is possible to replace the socket 300 with a socket 300 having a required size.

The manual ratchet wrench 400 as the second tool shown in FIGS. 14 and 15 has a socket portion 401 and a socket opening 401a on the front and rear sides of both ends of the ratchet wrench 400, that is, on the front side of the upper end portion, and a socket portion on the rear side of the upper end portion. The 402 and the socket opening 402a are provided, the socket portion 403 and the socket opening 403a are provided on the front side of the lower end portion, and the socket portions 404 and 404a are provided on the rear side of the lower end portion, respectively. In this embodiment, the size of the socket opening 401a of the socket portion 401 corresponds to the size of the tool connecting portion 20b of the socket adapter 20. Therefore, as shown in FIGS. 14 and 15, the socket adapter 20 is attached to the socket portion 401 of the ratchet wrench 400 by fitting and locking the tool connecting portion 20b from the socket opening 401a into the socket portion 401. Then, when the socket adapter 20 attached to the socket portion 401 is rotated by the ratchet wrench 400, the driver bit 200 attached to the socket adapter 20 can be rotated integrally with the socket adapter 20. Therefore, when the tip 201a (201) of the driver bit 200 is pressed against the head of the screw with a cross hole and rotated, the screw with a cross hole can be attached and detached.

The manual ratchet wrench 400 as the second tool shown in FIGS. 16 and 17 replaces the driver bit 200 with the socket 300 as the first tool in the ratchet wrench 400 shown in FIGS. 14 and 15. It is a manual tool unit that is rotatably attached to the tool attachment portion 20a of the adapter 20 and is attached by fitting and inserting the tool connection portion 20b of the socket adapter 20 to which the socket 300 is attached into the socket opening 401a of the socket portion 401. .. In the manual ratchet wrench 400 shown in FIGS. 16 and 17, the socket port 300a of the socket 300 is arranged at a position protruding forward from the front end (tool mounting portion 20a) of the socket adapter 20. In this arrangement of the socket 300, sockets of various sizes corresponding to, for example, square bolts and nuts of various sizes can be interchangeably attached to the socket opening 300a. Therefore, sockets 300 of various sizes corresponding to square bolts and nuts of various sizes are attached to the tool mounting portion 20a of the socket adapter 20, and square bolts and nuts corresponding to the socket 300 are fitted into the socket opening 300a. When the ratchet wrench 400 is rotated by inserting it together, the square bolts and nuts can be attached and detached.

As described above, the socket adapter 20 according to the present invention can be used for a wide variety of purposes as shown in FIGS. 6 to 17. Next, the detailed structure of the socket adapter 20 will be described with reference to FIGS. 1 to 5.

1 to 5, FIG. 1 is a front view of the socket adapter 20, FIG. 2 is a side view of the socket adapter 20, FIG. 3 is a sectional view taken along the line AA of FIG. 1, and FIG. 4 is an external perspective view of the socket adapter 20. , FIG. 5 is an exploded perspective view of the socket adapter 20. In the following description, the left side in the left-right direction of FIGS. 2 and 3 will be described as one end side of the socket adapter 20, and the right side will be described as the other end side.

The socket adapter 20 has an adapter main body 23, a retaining means 24, and the like.

The adapter main body 23 is a member made of metal in a substantially cylindrical shape, and a through hole 21 having a hexagonal cross section is formed in the center thereof so as to penetrate from one end side to the other end side. The hexagonal cross section of the through hole 21 corresponds to the 6.35-axis driver, that is, the hexagonal cross section of the driver bit 200, and the driver bit 200 can be fitted and inserted into the through hole 21. The adapter main body 23 is movably mounted on the outer periphery of the driver bit 200 from one end side to the other end side of the driver bit 200, and can rotate integrally with the driver bit 200.

A locking tubular portion 23a is provided on the outer peripheral portion of the adapter main body portion 23 located substantially in the center in the front-rear direction. Further, a tool mounting portion 20a is provided on one end side of the locking cylindrical portion 23a, and a tool connecting portion 20b is provided on the other end side.

The locking tubular portion 23a is formed with a large diameter portion 23aa and a small diameter portion 23ab having an outer diameter smaller than the outer diameter of the large diameter portion 23aa. A cylindrical slide cover 26 is attached to the large diameter portion 23aa and the small diameter portion 23ab so as to straddle the large diameter portion 23aa and the small diameter portion 23ab, and the return spring 27 and the ball 22 are attached to the small diameter portion 23ab. And a C-ring-shaped slide cover retaining ring 28 is attached. Further, a ball receiving hole 23c penetrates from the outer peripheral surface of the small diameter portion 23ab to the inside of the through hole 21 in the small diameter portion 23ab, and is formed substantially at right angles to the axis center of the locking tubular portion 23a.

In the ball receiving hole 23c, the ball 22 is arranged so as to be movable in the vertical direction along the axis center of the ball receiving hole 23c. As shown in FIG. 3, the size of the inner diameter of the boundary portion 25 of the ball receiving hole 23c with the through hole 21 is formed to be smaller than the size of the outer diameter of the ball 22, and is formed in the ball receiving hole 23c. The entire housed ball 22 is set so as not to fall out into the through hole 21. That is, the ball receiving hole 23c allows a part of the ball 22 housed in the ball receiving hole 23c to protrude into the through hole 21, but the entire ball 22 does not fall out into the through hole 21. The ball 22 is formed so that it can always be held in the ball receiving hole 23c.

Further, a circumferential groove 29 is formed on the outer peripheral surface of the small diameter portion 23ab in the locking tubular portion 23a, and a C-ring-shaped slide cover retaining ring 28 is attached to the circumferential groove 29. When the slide cover retaining ring 28 is attached to the circumferential groove 29, it is attached so as to project outward from the outer periphery of the small diameter portion 23ab, and the slide cover 26 is moved to the other end side (lock position L side). It functions as a stopper that regulates the amount of water.

The slide cover 26 has an inner peripheral portion on one end side, the size of the inner diameter thereof is substantially equal to the size of the outer diameter of the large diameter portion 23aa in the locking tubular portion 23a, and the small diameter portion 23ab is located between the slide cover 26 and the small diameter portion 23ab. The size of the inner diameter is smaller than the size of the inner diameter of the annular return spring storage part 26a and the return spring storage part 26a, which form a gap that can accept the return spring 27 made of the coil spring mounted on the. The size of the inner diameter of the lock portion 26b formed as the ball holding annular convex portion and the inner diameter of the return spring accommodating portion 26a are substantially equal to the size of the inner diameter, and the ball 22 can be temporarily released to the outer peripheral side. It has an unlocked portion 26c formed as a ball relief annular recess, and a sliding surface portion 26d formed having a size of an inner diameter substantially the same as the size of the outer diameter of the small diameter portion 23ab.

When the slide cover 26 is attached to the locking tubular portion 23a, the ball 22 is stored in the ball receiving hole 23c of the small diameter portion 23ab and returned to the outer periphery of the small diameter portion 23ab prior to the attachment of the slide cover 26. A spring 27 for mounting is attached. After that, the slide cover 26 is placed at one end of the adapter main body 23 so that the return spring storage portion 26a is on the front side from the other end side of the adapter main body 23 and covers substantially the entire outer peripheral surface of the adapter main body 23. Slide it toward the side. During mounting, the return spring 27 comes into contact with the side surface of the lock portion 26b and is compressed. Further, before the other end (rear end) portion of the slide cover 26 exceeds the circumferential groove 29 of the small diameter portion 23ab, one end (front end) portion of the return spring accommodating portion 26a of the slide cover 26 is the rear end of the large diameter portion 23aa. Covers the outer peripheral surface of the side.

When the other end (rear end) portion of the slide cover 26 exceeds the circumferential groove 29 of the small diameter portion 23ab, the slide cover retaining ring 28 is fitted and mounted in the circumferential groove 29. When the slide cover 26 tries to move to the rear end side beyond the circumferential groove 29 by mounting the slide cover retaining ring 28, the rear end of the slide cover 26 hits the slide cover retaining ring 28, and the slide cover 26 further moves. It is regulated to prevent it from moving.

Then, the return spring 27 is compressed and stored and held in the return spring storage portion 26a. Therefore, when the slide cover 26 is free, the rear end of the slide cover 26 abuts against the slide cover retaining ring 28 due to the urging force of the return spring 27, that is, the lock position L, as shown by the solid line in FIG. It is held at. At this lock position L, the lock portion 26b is arranged at a position corresponding to the ball 22 in the ball receiving hole 23c, and the ball 22 is pressed toward the through hole 21 so that the ball 22 is outside the ball receiving hole 23c. Move in the direction and hold it away.

Further, when the slide cover 26 is slid to the unlock position U shown by the alternate long and short dash line in FIG. 3 against the urging force of the return spring 27, the unlock portion 26c receives the ball at the unlock position U. It is arranged at a position corresponding to the ball 22 in the hole 23c. At this unlock position U, the pressing of the ball 22 is released, and the ball 22 is allowed to move in the outer peripheral direction (outer direction) in the ball receiving hole 23c and escape. Therefore, when the socket adapter 20 is arranged on the driver bit 200, the socket adapter 20 is allowed to move along the axis center of the driver bit 200 on the driver bit 200. Further, when the force for operating the slide cover 26 is released, the slide cover 26 automatically returns to the lock position L by the urging force of the return spring 27. As a result, the ball 22 is pressed to the through hole 21 side by the lock portion 26b, and in a state where the socket adapter 20 is arranged on the driver bit 200, friction between the ball 22 and the outer peripheral surface of the driver bit 200. A force is generated to suppress the movement of the socket adapter 20 on the driver bit 200.

That is, the pressing of the ball 22 and the release of the pressing by the operation of the slide cover 26 form the retaining means 24.

The tool mounting portion 20a of the adapter main body portion 23 is formed within the maximum outer diameter range of the large diameter portion 23aa of the locking tubular portion 23a, and is mounted in a square cross section in order from the locking tubular portion 23a side. It integrally has a portion 20aa and a fitting retaining portion 20ab that protrudes in a columnar shape from the front end of the mounting portion 20aa toward the front side.

A circumferential groove 30 is formed on the outer peripheral surface of the fitting retaining portion 20ab. A socket fixing ring 31 is mounted on the circumferential groove 30. The socket fixing ring 31 is, for example, an O-ring, and when mounted in the circumferential groove 30, the socket fixing ring 31 is attached in a state of slightly protruding outward from the maximum outer circumference of the fitting retaining portion 20ab. In this embodiment, two O-rings are attached as the socket fixing ring 31, but the number may be one or more. For example, when the socket 300, which is the first tool, is attached to the tool mounting portion 20a, the socket fixing ring 31 is fitted and crimped to the inner surface of the socket 300, and the frictional force due to the fitting crimp causes the socket 300 to be a tool. It functions as a stopper to prevent it from coming out of the mounting portion 20a.

The tool connecting portion 20b of the adapter main body portion 23 is formed within the maximum outer diameter range of the small diameter portion 23ab in the locking tubular portion 23a, and is a connecting portion having a hexagonal cross section in order from the locking tubular portion 23a side. It integrally has 20ba and a fitting retaining portion 20bb that protrudes in a columnar shape from the rear end of the connecting portion 20ba toward the rear side.

A circumferential groove 32 is formed on the outer peripheral surface of the fitting retaining portion 20bb. A socket fixing ring 33 is mounted on the circumferential groove 32. The socket fixing ring 33 is, for example, a C ring, and when mounted in the circumferential groove 32, the socket fixing ring 33 is attached in a state of slightly protruding outward from the maximum outer circumference of the fitting retaining portion 20bb. In this embodiment, one C ring is attached as the socket fixing ring 33, but the number may be one or more. The socket fixing ring 33 is, for example, on the inner surface of the socket opening 401a when the socket fixing ring 33 is inserted into the socket opening 401a of the ratchet wrench 400, which is a second tool, and the socket adapter 20 is attached to the ratchet wrench 400. It is fitted and crimped, and functions as a stopper that prevents the socket adapter 20 from coming out of the socket opening 401a of the ratchet wrench 400 due to the frictional force generated by the fitting and crimping.

Therefore, in the socket adapter 20 configured in this way, as shown in FIGS. 6 and 7, when the driver bit 200 is inserted into the through hole 21 of the adapter main body 23, the socket adapter 20 is mounted on the driver bit 200. can do. When the socket adapter 20 is mounted on the driver bit 200 and the slide cover 26 is arranged at the lock position L, a pressing force is applied to the ball 22 from the lock portion 26b of the slide cover 26 in the retaining means 24. The ball 22 is applied and the ball 22 is pressed against the outer peripheral surface of the driver bit 200. Then, the frictional force generated between the ball 22 and the outer peripheral surface of the driver bit 200 restricts the socket adapter 20 from moving in the axial direction on the driver bit 200.

Further, when the slide cover 26 is arranged from the lock position L to the unlock position U, the unlock portion 26c of the slide cover 26 corresponds to the ball 22, and the ball 22 escapes to the outer peripheral portion side (outside) of the slide cover 26. Then, the frictional force between the ball 22 and the outer peripheral surface of the driver bit 200 is weakened, and the socket adapter 20 is allowed to move in the axial direction on the driver bit 200. Alternatively, the socket adapter 20 is allowed to be completely removed from the driver bit 200.

Further, when the socket adapter 20 is moved in the axial direction on the driver bit 200 with the slide cover 26 arranged at the unlock position U, and the ball 22 corresponds to the retaining peripheral groove 203 of the driver bit 200 on the way, The ball 22 falls into the retaining groove 203. Further, if the slide cover 26 is moved and returned to the lock position L in this state, the socket adapter 20 can be restrained and held at that position with the fitting and locking of the ball 22 and the retaining peripheral groove 203. .. Further, when the restraint at the fitting locking position is released, when the slide cover 26 is moved from the lock position L to the unlock position U, the ball 22 and the unlock portion 26c correspond to each other and are pressed against the ball 22. The power is released. Then, the ball 22 can be released from the retaining groove 203, and the socket adapter 20 can be moved axially again on the driver bit 200. Therefore, the socket adapter 20 is shown in the positions shown in FIGS. 6 and 7, the positions shown in FIGS. 8 and 9, the positions shown in FIGS. 10 and 11, and FIGS. 12 and 13. It can be moved to the position of the state, the position of the state shown in FIGS. 14 and 15, and the like, respectively.

Then, as shown in FIGS. 8 and 9, the socket adapter 20 is still attached to the outer periphery of the driver bit 200, or as shown in FIGS. 10 and 11, the socket adapter 20 is attached to the driver bit 200 together with the socket 300. When the adapter main body 23 is moved to the retracted position (the other end side) on the driver bit 200 while it is still attached to the outer periphery of the driver bit 200, the plus or minus tip 201 formed on the tip of the driver bit 200 is formed. Since it protrudes from one end side of the adapter main body 23, it is possible to perform work such as bolt tightening using the plus or minus tip 201 of the screwdriver bit 200. That is, it is possible to attach / detach the screw using the conventional driver bit 200 with the socket adapter 20 attached.

Further, when the adapter main body 23 is moved to the forward position (one end side) on the driver bit 200 along the outer circumference of the driver bit 200 with the socket adapter 20 still attached to the outer periphery of the driver bit 200, FIG. 12 And as shown in FIG. 13, one end side of the adapter main body 23 protrudes from the tip of the driver bit 200 to hide the tip 201. Then, the socket 300 as a first tool corresponding to the tightening and removal of bolts and nuts of different sizes can be attached to the outer peripheral portion of one end (tool mounting portion 20a) of the adapter main body portion 23. Further, in the through hole 21 having a polygonal cross section (hexagonal cross section in this embodiment), a support shaft portion of a third tool (not shown) such as a socket, which is compatible with tightening and removing bolts and nuts of different sizes, is replaced. When attached so that it can be attached, the bolts and nuts can be tightened and removed manually or electrically together with the electric screwdriver 100 and the like.

Further, when the socket adapter 20 is further moved to the forward position side of the driver bit 200, the socket adapter 20 can be pulled out from the driver bit 200 and removed. Therefore, if the driver bit 200 is damaged, only the driver bit 200 can be replaced and the socket adapter 20 can be used as it is. Also, when replacing the driver bit 200 with a positive tip 201 with the driver bit 200 with a negative tip 201, simply replace it with the required type of driver bit 200 to continue using it. Can be done.

Further, as shown in FIGS. 14 and 15, the tool connecting portion 20b of the adapter main body portion 23 of the socket adapter 20 mounted at the forward position of the driver bit 200 is attached to the socket opening 401a of the socket portion 401 of the ratchet wrench 400. When inserted, the driver bit 200 and the socket adapter 20 can be attached to the socket portion 401 of the ratchet wrench 400. Then, the driver bit 200 and the socket adapter 20 can be rotated and used by using the ratchet wrench 400.

Further, as shown in FIGS. 15 and 16, when the tool connecting portion 20b of the adapter main body 23 is inserted into the socket opening 401a of the socket portion 401 in the ratchet wrench 400 with the socket 300 attached to the tool mounting portion 20a. , The socket adapter 20 and the socket 300 can be attached to the socket portion 401 of the ratchet wrench 400. Then, the socket adapter 20 and the socket 300 can be rotated and used by using the ratchet wrench 400.

Therefore, in the socket adapter 20 of this embodiment, in addition to the plus and minus screwdriver bits used for tightening screws and the like, or in addition to the socket wrench that can be used for tightening and removing bolts and nuts of different sizes, there are many. Can be used for various purposes.

In the above embodiment, the structure of the structure in which the ball 22 is pressed by the retaining means 24 and the pressing is released by the slide movement of the slide cover 26 is disclosed. However, the structure is not limited to this, and the retaining means 24 may have a structure composed of a leaf spring 40 and a ball 22, as shown in FIGS. 18 to 22, for example.

Explaining the structure of the socket adapter 20 shown in FIGS. 18 to 22, the socket adapter 20 shown in FIGS. 18 to 22 has a leaf spring 40 or the like instead of the slide cover 26, the return spring 27, and the slide cover retaining ring 38. Is provided. In FIGS. 18 to 22, the same or corresponding parts as those in FIGS. 1 to 5 are designated by the same reference numerals as those in FIGS. 1 to 5, and the description thereof will be omitted, and the differences will be mainly described.

The locking tubular portion 23a of the adapter main body 23, which is located substantially in the center in the front-rear direction, has a small-diameter portion 23d formed on the outer peripheral portion and a large-diameter portion 23e formed on the front-rear portion with the small-diameter portion 23d interposed therebetween. There is. Further, in the small diameter portion 23d, a ball receiving hole 23c penetrates from the outer peripheral surface of the small diameter portion 23d to the inside of the through hole 21 and is formed substantially at a right angle to the axial center of the locking tubular portion 23a. In the ball receiving hole 23c, the ball 22 is arranged so as to be movable in the vertical direction along the axis center of the ball receiving hole 23c.

As shown in FIG. 20, the ball receiving hole 23c here is also formed so that the size of the inner diameter of the boundary portion 25 of the ball receiving hole 23c with the through hole 21 is smaller than the size of the outer diameter of the ball 22. The entire ball 22 housed in the ball receiving hole 23c is set so as not to fall out into the through hole 21. That is, the ball receiving hole 23c allows a part of the ball 22 housed in the ball receiving hole 23c to protrude into the through hole 21, but the entire ball 22 does not fall out into the through hole 21. It is formed so as to be able to hold the ball 22. Then, as shown in FIG. 20, a part of the spherical surface of the ball 22 housed in the ball receiving hole 23c protrudes into the through hole 21, and the spherical surface on the opposite side thereof is at the same position as the outer peripheral surface of the small diameter portion 23d. It is set to be placed.

Further, after the ball 22 is accommodated in the ball receiving hole 23c, the leaf spring 40 is mounted so as to cover the outer circumference of the small diameter portion 23d to prevent the ball 22 from coming out of the ball receiving hole 23c. The leaf spring 40 is formed so that the width in the direction along the axis is substantially equal to the width in the direction along the axis of the small diameter portion 23d, and a slit 41 continuous from one end side to the other end side is formed in the direction along the axis. The cross section perpendicular to the axis is formed in a substantially C shape. Then, the leaf spring 40 is expanded by utilizing the deformation of the elastic force possessed by the leaf spring 40 and is arranged on the outer peripheral surface of the small diameter portion 23d. It is mounted in close contact with the top. In addition, this close contact prevents the ball 22 from coming out of the ball receiving hole 23c.

Therefore, in the socket adapter 20 shown in FIGS. 18 to 22, when the driver bit 200 is inserted into the through hole 21 of the adapter main body 23 as shown in FIGS. 23 and 25, the socket adapter 20 is mounted on the driver bit 200. can do. When the socket adapter 20 is mounted on the driver bit 200, the ball 22 is pressed against the outer peripheral surface of the driver bit 200 by the pressing force applied to the ball 22 from the leaf spring 40 in the retaining means 24, and the ball 22 and the ball 22 are pressed against the ball 22. The frictional force generated between the driver bit 200 and the outer peripheral surface suppresses the socket adapter 20 from moving in the axial direction on the driver bit 200.

Further, when a force is applied to the socket adapter 20 in the direction along the axis of the driver bit 200 against the frictional force generated between the ball 22 and the outer peripheral surface of the driver bit 200, the socket adapter 20 is transferred to the driver bit 200. It can be moved along the axis. Then, when the ball 22 corresponds to the retaining peripheral groove 203a (or the retaining peripheral groove 203b) of the driver bit 200 during the movement, the ball 22 falls into the retaining peripheral groove 203a (or the retaining peripheral groove 203b). In this state, the socket adapter 20 can be restrained and held at that position with the fitting and locking of the ball 22 and the retaining groove 203. Further, when releasing the holding at that position, a force is applied to the socket adapter 20 in the direction along the axis of the driver bit 200 against the fitting locking between the ball 22 and the retaining peripheral groove 203. Then, the ball 22 escapes from the retaining peripheral groove 203 against the pressing force of the leaf spring 40, disengages the engagement between the ball 22 and the retaining peripheral groove 203, and moves on the driver bit 200 again. Can be done. Therefore, the socket adapter 20 is shown in the positions shown in FIGS. 6 and 7, the positions shown in FIGS. 8 and 9, the positions shown in FIGS. 10 and 11, and FIGS. 12 and 13. It can be moved to the position of the state and the position of the state shown in FIGS. 14 and 15, respectively.

Therefore, even in the socket adapter 20 configured as in this modification, as shown in FIGS. 8 and 9, the socket adapter 20 is still attached to the outer periphery of the driver bit 200, or is shown in FIGS. 10 and 11. As described above, when the adapter main body 23 is moved to the retracted position (the other end side) on the driver bit 200 while the socket adapter 20 is attached to the outer periphery of the driver bit 200 together with the socket 300, the tip of the driver bit 200 is reached. Since the plus or minus tip 201 formed in the portion protrudes from one end side of the adapter main body portion 23, the plus or minus tip 201 of the screwdriver bit 200 can be used for work such as bolt tightening. Therefore, it is possible to attach / detach the screw using the conventional driver bit 200 with the socket adapter 20 attached.

Further, when the adapter main body 23 is moved to the forward position (one end side) on the driver bit 200 along the outer circumference of the driver bit 200 with the socket adapter 20 still attached to the outer periphery of the driver bit 200, FIG. 12 And as shown in FIG. 13, one end side of the adapter main body 23 protrudes from the tip of the driver bit 200 to hide the tip 201. Then, a socket 300 as a first tool (not shown) corresponding to tightening and removal of bolts and nuts of different sizes can be attached to one end outer peripheral portion (tool mounting portion 20a) of the adapter main body portion 23. Further, in the through hole 21 having a polygonal cross section (hexagon cross section in this embodiment) on one end side, a 6.3-axis tip part (not shown) such as a socket that can be tightened or removed with bolts / nuts of different sizes, etc. When the support shaft portion of the third tool is replaceably attached, the bolts and nuts can be tightened and removed manually or electrically together with the electric screwdriver 100 and the like.

Further, when the socket adapter 20 is further moved to the forward position side of the driver bit 200, the driver bit 200 can be pulled out from the socket adapter 20 and the socket adapter 20 can be removed from the driver bit 200. Therefore, if the driver bit 200 is damaged, only the driver bit 200 can be replaced and the socket adapter 20 can be used as it is. Also, when replacing the driver bit 200 with a positive tip 201 with the driver bit 200 with a negative tip 201, simply replace it with the required type of driver bit 200 to continue using it. Can be done.

Further, as shown in FIGS. 14 and 15, the tool connecting portion 20b of the adapter main body portion 23 of the socket adapter 20 mounted at the forward position of the driver bit 200 is attached to the socket opening 401a of the socket portion 401 of the ratchet wrench 400. When inserted, the driver bit 200 and the socket adapter 20 can be attached to the socket portion 401 of the ratchet wrench 400. Then, the driver bit 200 and the socket adapter 20 can be rotated and used by using the ratchet wrench 400.

Further, as shown in FIGS. 15 and 16, when the tool connecting portion 20b of the adapter main body 23 is inserted into the socket opening 401a of the socket portion 401 of the ratchet wrench 400 with the socket 300 attached to the tool mounting portion 20a. , The socket adapter 20 and the socket 300 can be attached to the socket portion 401 of the ratchet wrench 400. Then, the socket adapter 20 and the socket 300 can be rotated and used by using the ratchet wrench 400.

It should be noted that the present invention can be modified in various ways as long as it does not deviate from the spirit of the present invention, and it is natural that the present invention extends to the modified ones.

11: Main shaft 12: Socket 13: Screw 14: Bit 15: Bolt 16: Socket port 20: Socket adapter 20a: Tool mounting part 20aa: Mounting part 20ab: Fitting retaining part 20b: Tool connecting part 20ba: Connecting part 20bb: Fitting retaining portion 21: Through hole 22: Ball 23: Adapter main body 23a: Locking tubular portion 23aa: Large diameter portion 23ab: Small diameter portion 23c: Ball receiving hole 23d: Small diameter portion 23e: Large diameter portion 24: Removal Stop holding means 25: Boundary part 26: Slide cover 26a: Return spring storage part 26b: Lock part 26c: Unlock part 26d: Sliding surface part 27: Return spring 28: Slide cover retaining ring 29: Circumferential groove 30: Circulation Groove 31: Socket fixing ring 32: Circular groove 33: Socket fixing ring 38: Slide cover retaining ring 40: Leaf spring 41: Slit 100: Electric screwdriver 101: Rotating spindle 200: Driver bit 201: Tip 201a: Tip 201b: Tip 202 : Bit main body 203: Retaining ring groove 203a: Retaining ring groove 203b: Retaining ring groove 300: Socket (first tool)
300a: Socket port 400: Ratchet wrench (second tool)
401: Socket part 401a: Socket port 402: Socket part 402a: Socket port 403: Socket part 403a: Socket port 404: Socket part L: Lock position U: Unlock position

Claims (7)

A socket adapter that can be connected to a driver bit
It has a through hole with a polygonal cross section into which the driver bit is fitted and inserted, and the retracted position where the tip of the driver bit protrudes from one end of the through hole and the advance where the tip of the driver bit is hidden from one end of the through hole. A tubular adapter body that can move between positions and can rotate integrally with the driver bit,
A tool mounting portion having a polygonal cross section provided on the outer peripheral portion on one end side of the adapter main body portion and to which the first tool can be mounted,
A tool connecting portion having a polygonal cross section, which is provided on the outer peripheral portion on the other end side of the adapter main body portion and can be connected and attached to the socket portion of the second tool.
A socket adapter characterized by having. The adapter main body is formed by pressing a ball that can be fitted and locked in a retaining groove provided on the outer periphery of the driver bit and the ball in the axial center direction of the driver bit, and the adapter main body is the adapter body. A slide cover that can release a force that restrains the movement of the driver bit in the direction along the axis center, and a retaining means for holding the driver bit.
The socket adapter according to claim 1. The slide cover is movable in the axial direction along the outer periphery of the adapter main body portion, and is formed on an inner peripheral surface facing the ball with a locking protrusion formed side by side in the moving direction of the slide cover. Has a recess for unlocking,
When the lock protrusion is moved to a lock position facing the ball, the slide cover locks the movement of the adapter main body by fitting and locking the ball in the retaining groove. When the unlocking recess is moved to the unlocked position facing the ball, the force of the ball being fitted and locked in the retaining groove is released to move the adapter body portion. The socket adapter according to claim 2, wherein the socket adapter is tolerated. The socket adapter according to claim 3, wherein the retaining holding means has a spring means for constantly moving the slide cover to the locked position. The adapter main body always applies a ball that can be fitted and locked in a retaining groove provided on the outer periphery of the driver bit and a force that pushes the ball toward the axis center of the driver bit to the ball. The socket adapter according to any one of claims 1 to 4, further comprising a retaining means for holding a leaf spring having a C-shaped cross section. The socket adapter according to any one of claims 1 to 5, wherein the tool connecting portion is interchangeably attached to a ratchet wrench. The socket adapter according to claim 6, wherein a support shaft portion of a third tool is replaceably attached to the through hole with one end side of the through hole as a socket opening.

Images