What are sockets and how to use them?

Abstract

To provide a socket allowing a user to select three kinds of different sizes, capable of greatly simplifying the structure, effectively reducing the whole volume, and reducing a man hour of assembly work, and conveniently storable and portable, and to provide a method for using the same.SOLUTION: A socket comprises a first member 1, a second member 2, and a third member 3. A first fitting portion of the first member can selectively drive a first member to be driven. The second member is inserted into the first member, and has a second fitting portion for driving a second member to be driven. The second fitting portion is stored in the first fitting portion, and the second fitting portion can be moved in a direction approaching a coupling part with respect to the first fitting portion. The third member is fitted to the first member, and has a third fitting portion for driving a third member to be driven. The third fitting portion can be moved in a direction apart from the coupling part with respect to the first fitting portion. The inner diameters of the first fitting portion, the second fitting portion and the third fitting portion are different from each other.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a socket. [Background technology]

[0002] Sockets are used to drive fastening members such as screws, bolts, and nuts. The fitting portion of a socket has a fixed size and shape, and only fastening members having matching sizes and contours can be fitted into it. This requires that factories prepare sockets of various sizes, which increases costs. In addition, multiple sockets with different sizes and shapes are difficult to store and inconvenient to carry. To solve this problem, some manufacturers have developed sockets with two sizes, and further developed sockets with three or more sizes. Such sockets have been proposed, for example, in Patent Document 1 (Taiwan Invention No. I576208) and Patent Document 2 (US Patent No. US5157995).

[0003] Such a socket has a structure in which the outermost fitting portion, which has a fixed size, is used as a reference, and other fitting portions having smaller sizes are inserted inside the outermost fitting portion. When used, the fastening member presses against the fitting portion having the smaller size, and the fastening member couples with the fitting portion that matches it. In other words, the structure of such a socket employs a technique of retreating multiple fitting portions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Taiwan Invention Publication No. I576208 [Patent Document 2] US Patent No. US5157995 [Patent Document 3] Taiwan Utility Model Patent No. M348666 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the above-described structure, fittings of various sizes and springs of various elasticities are required, and various movement restriction mechanisms must be provided inside the socket to prevent the components from coming loose. This requires high precision in fitting the components together, makes processing difficult, makes assembly difficult, and increases manufacturing costs.

[0006] Another type of socket structure is proposed in, for example, Patent Document 3 (Taiwan Utility Model No. M348666). This type of socket has a structure in which a case that is the outermost and has a fixed dimension is used as a reference, and multiple cylindrical members are placed inside the case so as to overlap each other. This allows for a variety of fitting dimensions. Each cylindrical member is provided with a guide groove of different lengths, and each cylindrical member is connected by multiple slidable horizontal rods. When in use, the cylindrical member to be used is pushed out of the case.

[0007] However, the socket requires high precision to fit each component, which makes the processing difficult, such as designing the length of the guide groove, selecting the position of the side positioning groove, and designing the detailed structure of the connecting rod. Furthermore, when in use, the torque caused by rotating the socket tends to concentrate on the side rod, which makes it prone to deformation when used frequently.

[0008] SUMMARY OF THE PRESENT EMBODIMENTS The main object of the present invention is to provide a socket which can simplify the internal structure, greatly reduce the overall volume, and is convenient to operate. [Means for solving the problem]

[0009] According to the present invention, there is provided a socket including a first member having a coupling portion and a first fitting portion opposed to each other, the first fitting portion being capable of selectively driving a first driven member; a second member that is inserted into the first member and includes a second fitting portion that drives a second driven member, the second fitting portion being accommodated in the first fitting portion, and the second fitting portion being movable relative to the first fitting portion in a direction approaching the coupling portion, whereby the first fitting portion is capable of driving the first driven member; a third member that is fitted into the first member and includes a third fitting portion, the third fitting portion being movable relative to the first fitting portion in a direction away from the coupling portion, and thus a portion of the third fitting portion protruding from the first fitting portion is capable of driving a third driven member; Equipped with The first fitting portion, the second fitting portion and the third fitting portion have inner diameters different from one another.

[0010] According to the socket of the present invention, the first member further comprises an accommodating space and a first rear wall surrounding the accommodating space, the second member is movably inserted into the accommodating space, and the elastic member is provided in the accommodating space and has both ends connected to the first rear wall and the second member, respectively, thereby biasing the second member in a direction away from the connecting portion.

[0011] The socket of the present invention is characterized in that a stopper portion is provided so as to protrude from the second outer wall of the second member, the stopper portion and the second fitting portion are provided at a distance from each other, and at least one regulating member is positioned on the first member, protrudes from the first rear wall and is capable of sliding between the stopper portion and the second fitting portion, and in the movement direction of the second member, the stopper portion and the regulating member interfere with each other.

[0012] According to the socket of the present invention, at least one through hole is provided in the first member, the number of the through holes is the same as the number of the regulating members, and the regulating members are inserted through the through holes and protrude from the first rear wall.

[0013] The socket according to the present invention is characterized in that the fitting ring fits and positions the first member, and presses the first member against the restricting member, thereby maintaining the restricting member in a state where it protrudes from the first back wall.

[0014] According to the socket of the present invention, the third member is movably fitted to the first member, two annular grooves are provided on the first outer wall of the first member, and the two annular grooves are provided at a distance from each other in the longitudinal direction of the first member, and the sliding member is positioned on the third member, protrudes from the third back wall of the third member, is capable of sliding between the two annular grooves, and is capable of selectively fitting into one of the annular grooves.

[0015] The socket of the present invention is characterized in that an inclined guide surface is provided on each of the adjacent side edges of the two annular grooves, the extension directions of the two inclined guide surfaces are inclined toward each other, and the sliding member is guided into or out of the annular groove by the inclined guide surfaces.

[0016] According to the socket of the present invention, the third member is movably fitted to the first member, two annular grooves are provided on a first outer wall of the first member, and the two annular grooves are provided at a distance from each other in the longitudinal direction of the first member, the sliding member is positioned on the third member and protrudes from a third back wall of the third member, and is capable of sliding between the two annular grooves and being selectively fitted into one of the annular grooves, and the two annular grooves are provided with oblique guide surfaces on adjacent sides, respectively, and the extending directions of the two oblique guide surfaces are inclined toward each other, and the sliding member is guided into or out of the annular groove by the oblique guide surfaces, and the portion of the first member where the two annular grooves are provided is defined as a second region, and the first region is connected to the second region and the coupling portion, and the first fitting portion is a first fitting portion. is connected to one end of the second region facing the first region, the second region has the thickest thickness among the first region, the second region, and the first fitting portion, the first fitting portion has the thinnest thickness, and the second region has the largest outer diameter, a through hole is provided in the first region, when a fitting ring is fitted into the first region, the fitting ring is aligned with the second region and its side edge abuts against the second region, the third fitting portion has the thickest thickness among the first fitting portion, the second fitting portion, and the third fitting portion, and the first fitting portion has the thinnest thickness, each of the first fitting portion, the second fitting portion, and the third fitting portion has a thickness greater than 1.5 mm, in the longitudinal direction of the first member, the length of the first fitting portion is the same as the length of the third fitting portion, the ratio of the length of the second fitting portion to the length of the first fitting portion is in the range of 0.5 to 0.7, and the second fitting portion does not protrude from the first fitting portion.

[0017] The socket according to the present invention is characterized in that a first polygonal hole is formed in the first fitting portion, a second polygonal hole is formed in the second fitting portion, and a third polygonal hole is formed in the third fitting portion, and the first polygonal hole, the second polygonal hole, and the third polygonal hole are each one of a hexagonal hole and a dodecagonal hole.

[0018] According to a method for using a socket according to the present invention, a socket according to any one of claims 1 to 8 is adopted, Selecting one of the first fitting portion, the second fitting portion and the third fitting portion according to different sizes of the first driven member, the second driven member and the third driven member to be rotated; a step of pressing the first fitting portion against the second fitting portion in a direction toward the connecting portion when the first fitting portion is selected, so that the second fitting portion retreats inwardly relative to the first fitting portion and moves toward the connecting portion, and fitting and driving the first driven member into the vacant space of the first fitting portion; or when the second fitting portion is selected, a step of fitting the second fitting portion into the second driven member and driving the second fitting portion; or when the third fitting portion is selected, pulling the third fitting portion in a direction away from the coupling portion so that the third fitting portion protrudes from the first fitting portion and fits the third fitting portion into the third driven member to drive the third driven member; The present invention is characterized by comprising: Effect of the Invention

[0019] According to the socket of the present invention, the user can choose from three different sizes, and the operating directions of the second and third members are opposite to each other, which greatly simplifies the structure, effectively reduces the overall volume, reduces the number of assembly steps, and makes it easy to store and carry. [Brief description of the drawings]

[0020] [Figure 1] FIG. 13 is a diagram showing the position of the second fitting portion to be used in one embodiment of the present invention. [Diagram 2] FIG. 13 is a diagram showing the position of a first fitting portion to be used in one embodiment of the present invention. [Diagram 3] FIG. 13 is a diagram showing the position of the third fitting portion to be used in one embodiment of the present invention. [Figure 4] 1 is an exploded perspective view showing a socket according to an embodiment of the present invention; [Diagram 5] 13 is a diagram showing a state in which a second driven member is fitted into a second fitting portion to be used in one embodiment of the present invention. FIG. [Figure 6]11 is a diagram showing a state in which a first driven member is fitted into a first fitting portion to be used in one embodiment of the present invention. FIG. [Figure 7] 13 is a diagram showing a state in which a third driven member is fitted into a third fitting portion to be used in one embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0022] 1 to 7. A socket according to an embodiment of the present invention includes a cylindrical first member 1, a cylindrical second member 2, and a cylindrical third member 3. In the following, a case will be described in which a first driven member 91, a second driven member 92, and a third driven member 93 are fastening members (more specifically, bolts). In the following, the positions of the second member 2 and the third member 3 in the socket shown in FIG. 1 are defined as initial positions. In this embodiment, in the initial position of the second member 2, the second member 2 is restricted from moving in a direction away from a joining portion 11 described later, and in the initial position of the third member 3, the third member 3 is restricted from moving in a direction approaching an engagement portion 11 described later.

[0023] The first member 1 includes a connecting portion 11 and a first fitting portion 12, which face each other. In this embodiment, in the axial direction of the first member 1, the direction from the first fitting portion 12 toward the connecting portion 11 corresponds to the first direction, and the direction from the connecting portion 11 toward the first fitting portion 12 corresponds to the second direction. In this embodiment, in the axial direction of the first member 1, the connecting portion 11 is provided at one end of the first member 1, and the first fitting portion 12 is provided at the other end of the first member 1. The connecting portion 11 is directly or indirectly attached to a driving tool (e.g., a torque wrench, an air pump, an electric tool, etc.) not shown. In this embodiment, the first member 1, the second member 2, and the third member 3 rotate integrally as a result of the connecting portion 11 being rotationally driven by the driving tool. A first driven member 91 of a predetermined dimension can be fitted into the first fitting portion 12. The first member 1 is rotationally driven by the driving tool, so that the first driven member 91 fitted in the first fitting portion 12 can be rotated. The second member 2 is inserted into the first member 1 and has a second fitting portion 21 into which a second driven member 92 of a predetermined dimension can be fitted. With the second driven member 92 fitted in the second fitting portion 21, the second driven member 92 fitted in the second fitting portion 21 can be rotated by rotating the first member 1 by the driving tool. The second fitting portion 21 is accommodated in the first fitting portion 12. As shown in FIG. 1 and FIG. 2, the second fitting portion 21 can move in the axial direction of the first member 1 relative to the first fitting portion 12. In other words, the second fitting portion 21 can move in a direction approaching the connecting portion 11 (first direction) and in a direction away from the connecting portion 11 (second direction) relative to the first fitting portion 12. 1, 2 and 6, the first driven member 91 can be fitted into the first fitting portion 12 by moving the second fitting portion 21 (second member 2) from the initial position toward the connecting portion 11. This makes it possible to rotate the first driven member 91.

[0024] The third member 3 is fitted to the outside of the first member 1 and includes a third fitting portion 31 into which the third driven member 93 can be fitted. As shown in FIG. 1 and FIG. 3, the third fitting portion 31 can move in the axial direction of the first member 1 relative to the first fitting portion 12. The third fitting portion 31 can move in a direction away from the connecting portion 11 and a direction approaching the connecting portion 11 relative to the first fitting portion 12. As shown in FIG. 1, FIG. 3 and FIG. 7, by moving the third fitting portion 31 (the third member 3) from the initial position in a direction away from the connecting portion 11, a part of the third fitting portion 31 can be protruded from the first fitting portion 12. This allows the third driven member 93 to be fitted into the third fitting portion 31. With the third driven member 93 fitted into the third fitting portion 31, the third driven member 93 fitted into the third fitting portion 31 can be rotated by rotating the first member 1 by the driving tool. The first fitting portion 12, the second fitting portion 21, and the third fitting portion 31 have different inner diameters. In this specification, the inner diameter of a fitting portion refers to the diameter of a circle inscribed in the fitting portion when viewed from the axial direction of the fitting portion.

[0025] The above-mentioned coupling method of inner insertion and outer fitting allows the second fitting portion 21 and the third fitting portion 31 to independently recede inward (toward the coupling portion 11) or extend outward (outward in the axial direction of the first member 1) with respect to the first fitting portion 12, which is located in the center and does not move. Therefore, when the second fitting portion 21 or the third fitting portion 31 is selected and moved, the second fitting portion 21 and the third fitting portion 31 do not interfere with each other or move together. Therefore, the user can quickly select a fitting portion of the desired size.

[0026] In order to simplify the operation and enable the user to use the socket intuitively, the method of using the socket includes the following steps. First, one of the first fitting portion 12, the second fitting portion 21, and the third fitting portion 31 is selected according to the size of the driven member to be rotated (the first driven member 91, the second driven member 92, or the third driven member 93). For example, when the first fitting portion 12 is selected, the second fitting portion 21 (the second member 2) in the initial position is pressed in a direction approaching the connecting portion 11. This causes the second fitting portion 21 to retreat inwardly relative to the first fitting portion 12 (to move toward the connecting portion 11). The first driven member 91 is fitted into the space vacated by the movement of the second fitting portion 21 in the first fitting portion 12, and the first driven member 91 is driven. When the second fitting portion 21 is selected, a second driven member 92 is fitted into the second fitting portion 21 to drive the second driven member. When the third fitting portion 31 is selected, the third fitting portion 31 (third member 3) in the initial position is pulled in a direction away from the connecting portion 11, so that the third fitting portion 31 protrudes from the first fitting portion 12. Then, a third driven member 93 is fitted into the third fitting portion 31 to drive the third driven member 93.

[0027] From the above description of the usage method, it can be seen that the first fitting portion 12 has the advantage of separating the second fitting portion 21 and the third fitting portion 31, so that the second fitting portion 21 and the third fitting portion 31 do not interfere with each other when moving in the axial direction of the first member 1. It is preferable that the second fitting portion 21 does not protrude from the first fitting portion 12. In this case, the immovable first fitting portion 12 can prevent the second fitting portion 21 from being unintentionally pushed in by a foreign object.

[0028] Next, the structure of the socket will be described in more detail. In this embodiment, the first fitting portion 12 is engaged with the second fitting portion 21 and the third fitting portion 31 in the circumferential direction (direction around the axis) of the first member 1. With this configuration, the first fitting portion 12, the second fitting portion 21, and the third fitting portion 31 rotate integrally when the first member 1 (joint portion 11) is rotated by a driving tool (not shown). A first polygonal hole 81 is formed in the first fitting portion 12. A second polygonal hole 82 is formed in the second fitting portion 21. A third polygonal hole 83 is formed in the third fitting portion 31. The first polygonal hole 81, the second polygonal hole 82, and the third polygonal hole 83 are each a hexagonal hole or a dodecagonal hole. This makes it possible to satisfy various requirements of users. In this embodiment, the polygonal holes adopted by the second fitting portion 21, the first fitting portion 12, and the third fitting portion 31 from the inside to the outside are hexagonal, hexagonal, and dodecagonal, but the present invention is not limited thereto. Of course, from the inside to the outside, they may be hexagonal, hexagonal, hexagonal, hexagonal, dodecagonal, hexagonal, dodecagonal, hexagonal, dodecagonal, hexagonal, dodecagonal, hexagonal, dodecagonal, hexagonal, dodecagonal, dodecagonal, hexagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal, dodecagonal.

[0029] In this embodiment, the first member 1 further includes an accommodation space 14 and a first back wall (inner wall) 16 surrounding the accommodation space 14. The second member 2 is movably inserted into the accommodation space 14. An elastic member 4 is provided in the accommodation space 14. In this embodiment, a coil spring is used as the elastic member 4. In the axial direction of the first member 1, one end of the elastic member 4 is connected to the first back wall 16, and the other end is connected to the second member 2. This biases the second member 2 in a direction away from the connecting portion 11. When the first driven member 91 is extracted from the first fitting portion 12, the second member 2 is returned to its initial position by the elastic member 4. On the other hand, when the first driven member 91 is fitted into the first fitting portion 12, the second fitting portion 21 is tightly pressed against the first driven member 91 by the elastic member 4. This increases the contact area between the socket and the first driven member 91, thereby enabling the first driven member 91 to be stably driven. In particular, when the first driven member 91 is fitted into the socket with the socket facing upward, the first driven member 91 can be stably driven.

[0030] Specifically, the stopper 23 is provided so as to protrude from the second outer wall (outer peripheral surface) 22 of the second member 2. In this embodiment, the flange-shaped stopper 23 is provided at the end of the second outer wall 22 on the joint portion 11 side so as to protrude outward (outward in a direction (radial direction) perpendicular to the axial direction of the first member 1). The stopper 23 and the second fitting portion 21 are provided at a distance in the axial direction of the second member 2. At least one regulating member 5 is positioned and provided in the first member 1. The regulating member 5 protrudes inward from the first back wall 16 between the stopper 23 and the second fitting portion 21 and can slide relative to the second outer wall 22. The outward movement of the second member 2 in the axial direction of the first member 1 is regulated by the stopper 23 and the regulating member 5 interfering with each other (hooking on each other). As a result, it is possible to prevent the second member 2 from falling off the first member 1. This allows the second member 2 to move a certain distance relative to the first member 1. In this embodiment, the restricting member 5 and the stopper portion 23 correspond to the “first restricting means” in claim 1 .

[0031] More specifically, at least one through hole 13 is provided in the first member 1. In this embodiment, the number of through holes 13 is the same as the number of regulating members 5 (two in this embodiment). The regulating members 5 are inserted into the through holes 13 and protrude from the first back wall 16. The fitting ring 6 is fitted onto the outside of the first member 1 to position it, and by pressing the regulating members 5 from the outside toward the inside, the state in which the regulating members 5 protrude from the first back wall 16 is maintained.

[0032] In this embodiment, the third member 3 is fitted to the outside of the first member 1 so as to be movable relative to the first member 1. When the third driven member 93 is fitted in the third fitting portion 31, the first fitting portion 12 abuts against the third driven member 93, so that the supporting force is stable.

[0033] In detail, two annular grooves 17 are provided in the first outer wall (outer peripheral surface) 15 of the first member 1. The two annular grooves 17 are provided at a distance in the longitudinal direction (axial direction) of the first member 1. The slide member 7 is positioned in the third member 3 and protrudes from the third back wall (inner wall) 32 of the third member 3. In this embodiment, an annular groove 33 is provided in the third back wall 32 on the coupling portion 11 side from the third fitting portion 31, and the slide member 7 is fitted in the annular groove 33. The slide member 7 is, for example, a C-ring. The slide member 7 can slide with respect to the first outer wall 15 between the two annular grooves 17, and can be selectively fitted into one of the two annular grooves 17. This can prevent the third member 3 from falling off the first member 1, and can also position the third member 3. The two annular grooves 17 are each provided with an inclined guide surface 171. More specifically, in one annular groove 17, a side surface on the side of the other annular groove 17 is configured as an oblique guide surface 171, and in the other annular groove 17, a side surface on the side of the one annular groove 17 is configured as an oblique guide surface 171. The oblique guide surface 171 of one annular groove 17 extends so as to widen obliquely outward from the bottom surface of the annular groove 17 so as to be positioned more outward as it approaches the other annular groove 17, and the oblique guide surface 171 of the other annular groove 17 extends so as to widen obliquely outward from the bottom surface of the annular groove 17 so as to be positioned more outward as it approaches the one annular groove 17. The oblique guide surface 171 guides the slide member 7 into or out of the annular groove 17. In this embodiment, the slide member 7 and the annular groove 17 on the coupling portion 11 side of the two annular grooves 17 correspond to the "second restricting means" in claim 1. Also, the slide member 7 and the annular groove 17 on the first fitting portion 12 side of the two annular grooves 17 correspond to the "third restricting means" in claim 1.

[0034] In particular, the movement of the second member 2 is restricted by the stopper 23 of the second outer wall 22 and at least one restricting member 5 inserted into the first member 1. The movement of the third member 3 is restricted by the slide member 7 fitted into the third back wall 32 and two annular grooves 17 formed in the first outer wall 15. During machining, the worker performing the machining can easily control the machining of the first outer wall 15 and the second outer wall 22, and it is necessary to perform cutting only on the third back wall 32. In other words, according to the socket structure of the present invention, the manufacturing process is simplified and the number of steps in the assembly work can be reduced.

[0035] The portion of the first member 1 where the two annular grooves 17 are provided (including the portion between the two annular grooves 17) is the second region 19. The first region 18 of the first member 1 is connected to the second region 19 and the connecting portion 11, and the first fitting portion 12 is connected to the end of the second region 19 opposite to the first region 18. Among the first region 18, the second region 19, and the first fitting portion 12, the second region 19 has the thickest thickness (average thickness in this embodiment) and the first fitting portion 12 has the thinnest thickness (average thickness in this embodiment). The second region 19 has the largest outer diameter, and the through hole 13 is provided in the first region 18. In this embodiment, the fitting ring 6 is fitted into the first region 18 so that the fitting ring 6 and the second region 19 are aligned in the axial direction of the first member 1 and the side of the fitting ring 6 abuts against the second region 19.

[0036] In this embodiment, among the first fitting portion 12, the second fitting portion 21, and the third fitting portion 31, the third fitting portion 31 has the thickest wall thickness (average wall thickness in this embodiment), and the first fitting portion 12 has the thinnest wall thickness (average wall thickness in this embodiment). In order to ensure the strength required when using the socket, it is preferable that the wall thicknesses of the first fitting portion 12, the second fitting portion 21, and the third fitting portion 31 are each greater than 1.5 mm. In addition, in order to enable the first member 1 to abut against the third driven member 93, the ratio of the length of the first fitting portion 12 to the length of the third fitting portion 31 in the longitudinal direction (axial direction) of the first member 1 (length of the first fitting portion 12 / length of the third fitting portion 31) is preferably 0.9 to 1.1, and more preferably the length of the first fitting portion 12 is the same as the length of the third fitting portion 31. Similarly, in order to enable the second member 2 to abut against the first driven member 91, it is preferable that the ratio of the length of the second fitting portion 21 to the length of the first fitting portion 12 (length of the second fitting portion 21 / length of the first fitting portion 12) is 0.5 to 0.7.

[0037] According to the socket of the present invention, the second fitting portion can be used directly, and the first fitting portion can be used by the second member retracting inward relative to the first member, and the third fitting portion can be used by the third member protruding outward relative to the first member. This allows the user to choose fitting portions of three different sizes. Since the movement directions (movement directions from the initial position) of the second and third members are opposite to each other, the structure can be greatly simplified, the overall volume can be effectively reduced, the number of steps in the assembly work can be reduced, and storage and portability are convenient.

[0038] Although various embodiments and modifications have been described above, the present invention is not limited to these. Other embodiments that are conceivable within the scope of the technical idea of ​​the present invention are also included within the scope of the present invention.

[0039] Some or all of the above-described embodiments can be expressed by the following (Supplementary Note 1) to (Supplementary Note 10), but are not limited to the following descriptions. In the following (Supplementary Note 1) to (Supplementary Note 10), the object means an object to be fitted into the socket and rotated. An example of the object is a fastening member such as a bolt.

[0040] (Appendix 1) A first member including a coupling portion and a first fitting portion that face each other, the first fitting portion being capable of selectively driving a first object; a second member that is inserted into the first member and includes a second fitting portion that drives a second object, the second fitting portion being accommodated in the first fitting portion, and the second fitting portion being movable relative to the first fitting portion in a direction approaching the coupling portion, whereby the first fitting portion is capable of driving the first object; a third member that is fitted into the first member and includes a third fitting portion, the third fitting portion being movable relative to the first fitting portion in a direction away from the coupling portion, and a part of the third fitting portion being capable of protruding from the first fitting portion to drive a third object; Equipped with A socket, characterized in that the first fitting portion, the second fitting portion, and the third fitting portion have inner diameters which are different from one another.

[0041] (Appendix 2) The socket described in Appendix 1, characterized in that the first member further comprises an accommodating space and a first rear wall surrounding the accommodating space, the second member is movably inserted into the accommodating space, and an elastic member is provided in the accommodating space, and both ends are connected to the first rear wall and the second member, respectively, thereby urging the second member in a direction away from the connection portion.

[0042] (Appendix 3) The socket described in Appendix 2, characterized in that a stopper portion is provided so as to protrude from a second outer wall of the second member, the stopper portion and the second fitting portion are provided at a distance from each other, at least one regulating member is positioned on the first member, protrudes from the first rear wall and is capable of sliding between the stopper portion and the second fitting portion, and the stopper portion and the regulating member interfere with each other in the movement direction of the second member.

[0043] (Appendix 4) The socket described in Appendix 3, characterized in that at least one through hole is provided in the first member, the number of the through holes is the same as the number of the regulating members, and the regulating members pass through the through holes and protrude from the first rear wall.

[0044] (Appendix 5) The socket described in Appendix 4, characterized in that a fitting ring fits the first member to position it and presses it against the regulating member, thereby maintaining the regulating member protruding from the first rear wall.

[0045] (Appendix 6) The socket described in Appendix 1, characterized in that the third member is movably fitted to the first member, two annular grooves are provided on a first outer wall of the first member, the two annular grooves are provided at a distance from each other in the longitudinal direction of the first member, a sliding member is positioned on the third member and protrudes from a third rear wall of the third member, the sliding member is capable of sliding between the two annular grooves and is capable of selectively fitting into one of the annular grooves.

[0046] (Appendix 7) The socket described in Appendix 6, characterized in that an inclined guide surface is provided on each of the adjacent side edges of the two annular grooves, the extension directions of the two inclined guide surfaces are inclined toward each other, and the sliding member is guided into or out of the annular groove by the inclined guide surfaces.

[0047] (Appendix 8) The third member is movably fitted to the first member, two annular grooves are provided on a first outer wall of the first member, and the two annular grooves are provided at a distance from each other in a longitudinal direction of the first member. A slide member is positioned on the third member, protrudes from a third back wall of the third member, and is capable of sliding between the two annular grooves and being selectively fitted into one of the annular grooves. Adjacent sides of the two annular grooves are provided with oblique guide surfaces, and the extension directions of the two oblique guide surfaces are inclined and approach each other. The oblique guide surfaces guide the slide member into or out of the annular groove. A portion of the first member where the two annular grooves are provided is a second region, and the first region is connected to the second region and the coupling portion, and the first fitting portion is connected to one end of the second region facing the first region. the through hole is provided in the first section, and when the fitting ring is fitted into the first section, the fitting ring is aligned with the second section and has a side edge abutting the second section; the first fitting section, the second fitting section, and the third fitting section have a thickness that is the thickest and a thickness that is the thinnest of the first fitting section; the first fitting section, the second fitting section, and the third fitting section have a thickness that is the thickest and a thickness that is the thinnest of the first fitting section; the thicknesses of the first fitting section, the second fitting section, and the third fitting section are each greater than 1.5 mm; in the longitudinal direction of the first member, the length of the first fitting section is the same as the length of the third fitting section; a ratio of the length of the second fitting section to the length of the first fitting section is in a range of 0.5 to 0.7; and the second fitting section does not protrude from the first fitting section.

[0048] (Appendix 9) 9. The socket of claim 1, wherein a first polygonal hole is formed in the first fitting portion, a second polygonal hole is formed in the second fitting portion, and a third polygonal hole is formed in the third fitting portion, and the first polygonal hole, the second polygonal hole, and the third polygonal hole are each one of a hexagonal hole and a dodecagonal hole.

[0049] (Appendix 10) A socket according to any one of appendices 1 to 9 is used, Selecting one of the first fitting portion, the second fitting portion, and the third fitting portion according to different dimensions of the first object, the second object, and the third object to be rotated; When the first fitting portion is selected, the first fitting portion is pressed against the second fitting portion in a direction toward the coupling portion, so that the second fitting portion retreats inwardly relative to the first fitting portion and moves to the coupling portion, and the vacant space of the first fitting portion is fitted with the first object and driven; or when the second fitting portion is selected, fitting the second fitting portion into the second object and driving the second fitting portion; or when the third fitting portion is selected, pulling the third fitting portion in a direction away from the coupling portion, so that the third fitting portion protrudes from the first fitting portion, and the third fitting portion is fitted into the third object to be driven; 13. A method for using a socket, comprising: [Explanation of symbols]

[0050] 1 First member 2 Second member 3. Third member 4 Elastic member 5. Regulatory Materials 6 Fitting ring 7 Slide member 11 Joint 12 First fitting part 13 Through hole 14 Containment Space 15 First outer wall 16 First Back Wall 17 Annular groove 18 1st area 19 Second area 21 Second fitting part 22 Second outer wall 23 Stopper 31 Third fitting part 32 Third Back Wall 81 First polygonal hole 82 Second polygonal hole 83 Third polygonal hole 91 First driven member 92 second driven member 93 third driven member 171 Diagonal guide surface

Claims

1. The device includes a cylindrical first member, a cylindrical second member fitted inside the first member, a cylindrical third member fitted on the outside of the first member, and an elastic member, the first member has a coupling portion at one end in an axial direction for coupling to a driving tool, and a first fitting portion having a predetermined inner diameter at the other end in the axial direction; the second member has a second fitting portion that is received in the first fitting portion and has an inner diameter smaller than an inner diameter of the first fitting portion; the third member has a third fitting portion provided outside the first fitting portion and having an inner diameter larger than an inner diameter of the first fitting portion, the first member, the second member, and the third member rotate together; In the axial direction, a direction from the first fitting portion toward the connecting portion is defined as a first direction, and a direction from the connecting portion toward the first fitting portion is defined as a second direction, the second member and the third member are movable in the first direction and the second direction relative to the first member; The elastic member biases the second member in the second direction, The second member is positioned at a first restricting position by a first restricting means restricting movement of the second member in the second direction by the elastic member, By moving the second member in the first direction relative to the first member, the second fitting portion moves in the first direction relative to the first fitting portion, by moving the third member in the axial direction relative to the first member, it is possible to position the third member at a second restricted position where the movement of the third member in the first direction relative to the first member is restricted by a second restricting means, or at a third restricted position where the movement of the third member in the second direction relative to the first member is restricted by a third restricting means, By moving the third member in the second direction relative to the first member, the third fitting portion moves in the second direction relative to the first fitting portion, When the second member is positioned at the first restricting position and the third member is positioned at the second restricting position, the first fitting portion, the second fitting portion, and the third fitting portion overlap with each other, a first driven member can be fitted into the first fitting portion in a state in which the second member is moved in the first direction from the first restricting position, A second driven member can be fitted into the second fitting portion when the second member is in the first restricting position, a third driven member can be fitted into the third fitting portion in a state in which the third member is moved in the second direction from the second restricting position, A socket, characterized in that, in a direction perpendicular to the axial direction, a dimension of the first driven member is larger than a dimension of the second driven member and smaller than a dimension of the third driven member.

2. The first member further includes an accommodation space and a first back wall surrounding the accommodation space, The second member is inserted into the accommodation space so as to be movable in the axial direction, The elastic member is provided in the accommodation space, 2. The socket according to claim 1, wherein one end of the elastic member in the axial direction is connected to the first rear wall and the other end is connected to the second member so as to urge the second member in the second direction.

3. The first regulating means is A regulating member; a stopper provided so as to protrude from a second outer wall of the second member, The stop portion and the second fitting portion are provided at a distance from each other in the axial direction, the restricting member is provided on the first member so as to protrude inward from the first rear wall, and is slidable relative to the second outer wall between the stopper portion and the second fitting portion, 3. The socket according to claim 2, wherein movement of the second member in the second direction beyond the first restricted position is restricted by an engagement between the stopper portion and the restricting member.

4. The first member is provided with the same number of through holes as the restricting members, The socket according to claim 3 , wherein the restricting member is fitted in the through hole so as to protrude from the first back wall.

5. Further comprising a fitting ring; 5. The socket according to claim 4, wherein the fitting ring is fitted onto the outside of the first member to position it, and presses the regulating member from the outside toward the inside to maintain the regulating member protruding from the first rear wall.

6. The second regulating means and the third regulating means are A slide member; two annular grooves spaced apart in the axial direction in a first outer wall of the first member; the third member is movably fitted to the first member, the sliding member is positioned in the third member, protrudes from a third back wall of the third member, is capable of sliding relative to the first outer wall between the two annular grooves, and is capable of selectively fitting into one of the two annular grooves; the sliding member is fitted into the annular groove on the first direction side of the two annular grooves, thereby restricting the movement of the third member from the second restricting position in the first direction, 6. A socket as described in any one of claims 1 to 5, characterized in that the sliding member is fitted into the annular groove on the second direction side of the two annular grooves, thereby restricting the third member from moving in the second direction from the third restricting position.

7. In the annular groove on the first direction side of the two annular grooves, a side surface on the second direction side is configured as an inclined guide surface, and in the annular groove on the second direction side, a side surface on the first direction side is configured as an inclined guide surface, the inclined guide surface of the annular groove on the first direction side extends so as to widen obliquely outward from a bottom surface of the annular groove so as to be positioned more outward as it approaches the second direction side, The inclined guide surface of the annular groove on the second direction side extends so as to widen obliquely outward from a bottom surface of the annular groove so as to be positioned more outward as it approaches the first direction side, 7. The socket according to claim 6, wherein the inclined guide surface guides the slide member into or out of the annular groove.

8. The second regulating means and the third regulating means are A slide member; two annular grooves spaced apart in the axial direction in a first outer wall of the first member; the third member is movably fitted to the first member, the sliding member is positioned in the third member, protrudes from a third back wall of the third member, is capable of sliding relative to the first outer wall between the two annular grooves, and is capable of selectively fitting into one of the two annular grooves; the sliding member is fitted into the annular groove on the first direction side of the two annular grooves, thereby restricting the movement of the third member from the second restricting position in the first direction, the sliding member is fitted into the annular groove on the second direction side of the two annular grooves, thereby restricting the movement of the third member from the third restriction position in the second direction, In the annular groove on the first direction side of the two annular grooves, a side surface on the second direction side is configured as an inclined guide surface, and in the annular groove on the second direction side, a side surface on the first direction side is configured as an inclined guide surface, the inclined guide surface of the annular groove on the first direction side extends so as to widen obliquely outward from a bottom surface of the annular groove so as to be positioned more outward as it approaches the second direction side, The inclined guide surface of the annular groove on the second direction side extends so as to widen obliquely outward from a bottom surface of the annular groove so as to be positioned more outward as it approaches the first direction side, The inclined guide surface guides the slide member into or out of the annular groove, A portion of the first member where the two annular grooves are provided is defined as a second region, and a portion connecting the second region and the coupling portion is defined as a first region, The first fitting portion is connected to an end of the second section opposite to the first section, Among the first region, the second region, and the first fitting portion, the second region has the thickest thickness, the first fitting portion has the thinnest thickness, and the second region has the largest outer diameter; The through hole is provided in the first area, The fitting ring is fitted into the first section so that the fitting ring and the second section are aligned in the axial direction and a side surface of the fitting ring abuts against the second section, Among the first fitting portion, the second fitting portion, and the third fitting portion, the third fitting portion has the thickest wall thickness and the first fitting portion has the thinnest wall thickness; The thickness of each of the first fitting portion, the second fitting portion, and the third fitting portion is greater than 1.5 mm; a ratio of a length of the first fitting portion to a length of the third fitting portion in the axial direction is in a range of 0.9 to 1.1, and a ratio of a length of the second fitting portion to a length of the first fitting portion is in a range of 0.5 to 0.7; The socket according to claim 5 , wherein the second fitting portion does not protrude from the first fitting portion.

9. 9. The socket according to claim 1, wherein a first polygonal hole is formed in the first fitting portion, a second polygonal hole is formed in the second fitting portion, and a third polygonal hole is formed in the third fitting portion, and the first polygonal hole, the second polygonal hole, and the third polygonal hole are each one of a hexagonal hole and a dodecagonal hole.

10. The socket according to any one of claims 1 to 9 is adopted, a selection step of selecting one of the first fitting portion, the second fitting portion, and the third fitting portion according to dimensions of the first driven member, the second driven member, and the third driven member that are targets to be rotated; and rotating one of the first driven member, the second driven member, and the third driven member, In the selection step, when the object is the first driven member, the first fitting portion is selected, when the object is the second driven member, the second fitting portion is selected, and when the object is the third driven member, the third fitting portion is selected; When the first fitting portion is selected in the selection step, in the rotation step, the second fitting portion is pressed in the first direction, thereby moving the second fitting portion toward the coupling portion so as to retreat inward relative to the first fitting portion, and the first driven member is fitted into a space vacant by the movement of the second fitting portion within the first fitting portion, thereby rotating the first driven member; When the second fitting portion is selected in the selection step, the second driven member is fitted into the second fitting portion and rotated in the rotation step; A method of using a socket, characterized in that, when the third fitting portion is selected in the selection step, in the rotation step, the third fitting portion is pulled in the second direction to cause the third fitting portion to protrude from the first fitting portion, and the third fitting portion is fitted into the third driven member to rotate the third driven member.

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