JP6869557B2 - socket - Google Patents

Description

The present invention relates to sockets.

A bit socket is used for tightening and loosening bolts and nuts by attaching it to an impact driver or a drill driver by fixing a bit at one end. That is, a bit fixed to one end of a bit socket is attached to an impact driver or the like, and a nut is inserted through the opening of the socket. When the impact driver or the like is driven, the socket rotates due to the rotation of the bit, and the tightening and loosening work of the nut or the like can be executed.

Some conventional bit sockets have an outer socket and an inner socket (see Patent Documents 1 and 2). In this socket, the inner socket moves inside the outer socket. The outer socket can hold a nut of a predetermined size, and the inner socket can hold a nut having a smaller diameter than the nut that can be held by the outer socket. That is, by using such a bit socket, the user does not have to remove the socket from the impact driver or the like when tightening and loosening nuts having different diameters.

In a bit socket corresponding to such a plurality of sizes of nuts, the opening of the outer socket for receiving the nut and the opening of the inner socket face in the same direction. Further, the inner socket is urged on the opening side of the outer socket, and when the inner socket is not pushed by the user, the opening of the inner socket is located near the opening of the outer socket.

When the user tightens or loosens a small diameter nut, the inner socket holds the nut. When the user tightens or loosens a large-diameter nut, the socket is pressed against the nut to push the inner socket to the opposite side (bit side) of the opening, and the outer socket holds the nut.

Design Registration No. 1309103 Gazette Design Registration No. 1309418

In the configuration in which the inner socket moves in the axial direction inside the outer socket as described above, it is necessary to prevent the inner socket from coming off from the outer socket.

In the past, the structure that prevents the inner socket from coming off has been easily deteriorated due to wear and tear. For example, according to a bit socket as in Patent Documents 1 and 2, two pins (a fine hatched portion on the slightly left side of the AA cross-sectional view) are used to prevent the entire inner socket from falling off from the outer socket. However, in such a configuration, there is a risk that the inner socket may fall off due to wear or breakage of the pin. For example, when working at heights, it is necessary to prevent accidents caused by dropping or dropping the inner socket.

In the following embodiments, it is possible to provide a bit socket that can prevent the inner socket from falling off.

The bit socket in one embodiment has a first opening provided on one end side for receiving a first nut and a second opening provided on the other end side for receiving a bit. An outer member having a first holding portion for holding the first nut on the first opening side is provided. Further, the bit socket includes an inner member having at least a part accommodated in the outer member and having a second holding portion for holding a second nut having a diameter smaller than that of the first nut. Further, in the bit socket, the inner member and the outer member have substantially the same axial direction, and the inner member can move along the axial direction of the outer member. Further, in the bit socket, an annular member located between the outer peripheral surface of the inner member and the inner peripheral surface of the outer member is provided. Further, a groove-shaped annular member holding portion for holding the annular member is provided on the inner peripheral surface of the outer member. A predetermined range inside the annular member projects to the outside of the holding region of the annular member in the annular member holding portion. A bulging portion for preventing the inner member from falling off from the outer member by abutting at least a part of a predetermined range of the annular member on the outer peripheral surface of the inner member due to the axial movement of the inner member. To be equipped. A tapered portion is provided between the annular member holding portion and the second holding portion so as to be inclined toward the axial center side of the inner member from the second holding portion toward the annular member holding portion. The axial distance between the tapered portion and the tapered portion side end portion of the annular member holding portion is shorter than the wire diameter of the shaft member.

In the bit socket according to the embodiment, the inner member is kept within a predetermined range of the outer member by an annular member. In the conventional configuration, since the inner member is fastened by using the annular member and the spherical member on the outer peripheral surface or two pins, the inner member is fastened to the outer member due to deterioration such as wear as described above. Although it is easy to get stuck, the durability is improved according to the above configuration. Further, as compared with a socket in which an annular member is held on the outer peripheral surface of the outer member, it is possible to exhibit a continuous and smooth surface.

The perspective view in the bit socket of an embodiment. The front view of the bit socket of the embodiment. Top view of the bit socket of the embodiment. Right side view of the bit socket of the embodiment. Left side view of the bit socket of the embodiment. FIG. 4A'A'cross-sectional view of FIG. Another front view of the bit socket of the embodiment. FIG. 7 is a cross-sectional view in FIG. Reference diagram showing the usage status.

The bit socket of the embodiment will be described with reference to FIGS. 1 to 9. First, the overall configuration of the bit socket 1 according to the embodiment will be described with reference to FIGS. 1 to 6. As shown in FIGS. 1 to 5, the bit socket 1 includes an outer member 10, an inner member 20, and a slide member 30.

As shown in FIGS. 1 to 5, the outer member 10 has a large-diameter cylindrical portion and a small-diameter cylindrical portion provided on one end side of the cylindrical portion in the axial direction via a tapered surface. It is composed of. A first opening 12 is provided at one end of the large-diameter cylindrical portion. The first opening 12 has a diameter into which a nut can be inserted.

As shown in FIG. 4, a polygonal (for example, dodecagonal, hexagonal, etc.) nut holding portion is provided on the side of the first opening 12 of the outer member 10. This holding portion will be described below as "first holding portion 18a". Further, the nut held by the first holding portion 18a will be described as the first nut.

The first holding portion 18a includes a first contact surface 18b to which a peripheral edge portion on the tip surface of the first nut is abutted, and a first side surface 18c to which the side surface of the first nut is abutted. To be equipped with.

As shown in FIG. 6, the inner member 20 is formed in a cylindrical shape and includes a second holding portion 24 on the opening side at one end. The second holding portion 24 holds a nut having a diameter smaller than that of the first nut (hereinafter, referred to as “second nut”), and has a structure substantially similar to that of the first holding portion 18a except for the size. Has. Therefore, although the reference numerals are omitted, the second holding portion 24 also has a second contact surface on which the peripheral edge portion on the tip surface of the second nut is abutted and the side surface of the second nut is abutted. It has two sides.

As shown in FIG. 6, at least a part of the inner member 20 is housed inside the outer member 10, and the axial direction of the inner member 20 and the axial direction of the outer member 10 are substantially the same direction. Further, the inner member 20 can move in the axial direction with respect to the outer member 10. Further, the first opening 12 of the first holding portion 18a of the outer member 10 and the opening of the second holding portion 24 of the inner member 20 are arranged so as to face the same direction in the axial direction.

As shown in FIG. 6, on the outer peripheral surface of the inner member 20, the side opposite to the second holding portion 24 (the second opening 14 side of the outer member 10) is on the inner peripheral surface side (axial direction) of the outer member 10. A bulging portion 22 that protrudes in the direction orthogonal to each other) is provided. One end surface of the urging member B comes into contact with one side (second opening 14 side) of both side surfaces substantially orthogonal to the projecting direction of the bulging portion 22. Further, a predetermined range of the annular member R abuts on the other side (first opening 12 side) of the both side surfaces as described later.

The urging member B is housed in the outer member 10 and is located closer to the second opening 14 than the inner member 20. The urging member B urges the inner member 20 toward the first opening 12 in the outer member 10. The urging member B is, for example, a spring member.

FIG. 6 shows a state in which a force for pushing the inner member 20 toward the second opening 14 in the axial direction is not applied. In this state, since the second holding portion 24 is located at the position of the first holding portion 18a, the nut held in the bit socket 1 at this time is a second nut having a small diameter. On the other hand, FIGS. 7 and 8 show a state in which a force for pushing the inner member 20 toward the second opening 14 in the axial direction is applied. Since the second holding portion 24 is retracted to the back side (second opening 14 side), in this state, the nut held in the bit socket 1 is the first holding portion 18a corresponding to the first holding portion 18a. It becomes a nut (large diameter nut).

Since the inner member 20 is urged to the side of the first opening 12 by the urging member B, a configuration is required to prevent the inner member 20 from falling off from the outer member 10. As described above, conventionally, two pin members (cylindrical members) held on the inner peripheral surface side of the outer member and an annular ring held on the outer peripheral surface of the outer member 10 so that the pins do not fall off from the outer member. The structure including the member prevented the inner member from falling off.

However, in such a configuration, the annular member always holds the pin toward the inner member side, and when the inner member moves in the axial direction in that state, friction between the end surface of the pin and the outer peripheral surface of the inner member. Occurs. Therefore, the end face of the pin is worn due to the repeated movement of the inner member in the axial direction.

Further, when the inner member is pushed against the urging force of the urging member, a load is applied to the side surface of the pin (the surface along the axial direction of the pin). Since this force is applied in a direction orthogonal to the axial direction of the pin, the pin may be deteriorated and damaged (pin breakage, etc.) due to repeated axial movements of the inner member.

If the inner member cannot be fastened inside the outer member due to wear or breakage of the pin as described above, the inner member may fall off from the outer member. For example, when working at a high place such as a construction site, it is necessary to prevent an accident due to the inner member falling off.

The configuration of the present embodiment with respect to this will be described with reference to FIG. As shown in FIG. 6, a holding region (ring member holding portion 16) of the ring member R is provided at a predetermined position on the inner peripheral surface of the outer member 10. This "predetermined position" is a position adjacent to the first opening 12 side from the position of the bulging portion 22 in a state where no pushing force is applied to the inner member 20 (FIG. 6). In one example, the annular member holding portion 16 is formed by providing a recess in the outer member 10. The depth of the annular member holding portion 16 (the length in the direction orthogonal to the axial direction) is shorter than the diameter of the cross section orthogonal to the circumferential direction of the annular member R. Therefore, the annular member holding portion 16 holds a part of the annular member R, and the inside of the annular member R projects from the annular member holding portion 16 toward the inner member 20 side. The inside of the annular member R means the center side of the circle drawn by the annular member R.

In a state where no pushing force is applied to the inner member 20, the surface of the bulging portion 22 on the first opening 12 side and the ring member R are described so that the inner member 20 does not fall off from the outer member 10. The inner surfaces come into contact. According to such a configuration, the durability is improved because the falling off is prevented in a wider surface as compared with the holding with the pin as described above. Further, as compared with a socket in which an annular member is held on the outer peripheral surface of the outer member, it is possible to exhibit a continuous and smooth surface.

Next, the slide member 30 will be described with reference to FIG. As described above, the outer member 10 has a large-diameter portion corresponding to the position of the first holding portion 18a and a small-diameter portion accommodating the urging member B, but further holds a bit on the second opening 14 side. It has a bit holding area for holding. Further, the bit holding region is provided with a sphere holding portion for holding the sphere.
The slide member 30 is provided so as to surround the outer peripheral surface of the bit holding region of the outer member 10. Further, in the slide member 30, the slide member 30 is urged in the direction of the second opening 14 by the spring member inside the slide member 30. Further, the inner peripheral surface of the slide member 30 is provided with a protrusion that protrudes inward (on the outer peripheral surface side of the bit holding region of the outer member 10). This protrusion is provided at a position corresponding to the spherical body holding portion in the bit holding region of the outer member 10. Further, the inner peripheral surface of the slide member 30 is provided with a recess adjacent to the second opening 14 side with respect to the protrusion. When the slide member 30 is urged toward the second opening 14 side by the urging force of the spring member, when the slide member 30 is pushed toward the first opening 12 side against the urging force, the spherical body becomes the slide member 30. It falls into the recess of the, and the bit can be inserted. When the force pushing the slide member 30 toward the first opening 12 is released, the spherical body in the slide member 30 is pushed inside the slide member 30 by the protrusion, and the bit is held by the spherical body and the protrusion as shown in FIG. (Fig. 9).

Although embodiments of the present invention have been described, the above embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

Socket for 1 bit 10 Outer member 12 1st opening 14 2nd opening 16 Ring member holding part 18a 1st holding part 18b 1st contact surface 18c 1st side surface 20 Inner member 22 bulging part 24th Holding part of 2 30 Slide member B Biasing member R Ring member

Claims (2)

A first opening provided on one end side for receiving a first nut, a second opening provided on the other end side for receiving a bit, and the first opening on the first opening side. An outer member having a first holding portion for holding the nut of
At least a part thereof is housed in the outer member, has a second holding portion for holding a second nut having a diameter smaller than that of the first nut, and the axial direction is substantially the same as the axial direction of the outer member. The inner member, which is the same and can move along the axial direction of the outer member,
An annular member located between the outer peripheral surface of the inner member and the inner peripheral surface of the outer member,
An annular member holding portion for holding the annular member is provided on the inner peripheral surface of the outer member.
A predetermined range inside the annular member projects to the outside of the holding region of the annular member in the annular member holding portion.
With the axial movement of the inner member, at least a part of the predetermined range of the ring member comes into contact with the outer peripheral surface of the inner member, so that the inner member falls off from the outer member. A bulge is provided to prevent
Behind the first holding portion of the outer member, a contact portion is provided so that when the inner member moves to the innermost portion, the facing surface of the inner member with the innermost portion comes into contact with the innermost portion.
Between the contact part and the ring member holding part,
A tapered portion that inclines toward the axial center side of the inner member from the contact portion toward the annular member holding portion.
It is provided between the tapered portion and the annular member holding portion, and is formed substantially parallel to the axial direction of the inner member from the tapered portion toward the annular member holding portion, and has a length in the axial direction. A relay part whose length is shorter than the shaft diameter of the ring member,
A socket characterized by being provided with. The first holding portion is defined by an inner wall of the outer member having a depth in the axial direction of the outer member from the first opening.
The socket according to claim 1, wherein a step bent toward the center of the shaft is provided on the back side of the outer surface of the inner member facing the contact portion in the axial direction.

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