JPWO2016103751A1 - Fastening kit - Google Patents

Abstract

A fastening kit 1 includes at least one of a male screw 2 with a head and a female screw 4 and a socket 3 which is a dedicated tool that can be used only for the screw (2, 4). The screw (2, 4) is prevented from being removed by a third party different from the owner of the fastening kit 1. A male screw 2 has a tool fitting portion 22 for fitting in a direction along a hole 32 of a socket 3 and an axis 23 of the screw. In the recess 24 of the tool fitting portion 22, at least one of the tightening torque receiving surface 25 and the relaxation torque receiving surface 26 has a ridge along the entire region in the direction parallel to the axis of the male screw 2. At least one portion is provided, and at least one concave portion along the entire region in the direction parallel to the axis of the male screw 2 is provided. [Selection] Figure 1

Description

  The present invention relates to a fastening kit configured by combining a screw composed of at least one of a male screw with a head and a female screw and a dedicated tool that can be used only for the screw.

  The applicant of the present application has applied for a bolt that is improved in crime prevention, a nut, and a socket that is a dedicated tool for the bolt and nut (see Patent Documents 1-3).

  The bolts and nuts have a special outer shape so that a tightening operation and a loosening operation can be performed only with the socket, and a general tool cannot perform a tightening operation and a loosening operation.

  In addition, the said bolt and nut are provided with the recessed part which engages with those exclusive tools in the circumferential direction several places of the outer periphery of the tool fitting part. All of the many recessed portions have the same shape, and have a flat inner wall surface and an inner wall surface that is inclined and bulges with respect to the inner wall surface. At several locations in the circumferential direction of the inner peripheral surface of the socket hole, there are provided overhanging portions that are shaped so as to fit and fit the recesses.

Design registration No. 1437420 Design registration No. 1445310 Design registration No. 1455751

  When mass producing and selling the bolt of Patent Document 1 and the nut of Patent Document 2, it is preferable to sell the kit with the socket of Patent Document 3 attached thereto. When the kit is sold in this way, the purchaser of the kit has the socket.

  Therefore, in a situation where the purchaser of the kit uses a bolt or nut of the kit to fasten a vehicle license plate to the vehicle, for example, a third party different from the purchaser may purchase the same product as the kit. If purchased, the third party can use the socket, which is a dedicated tool attached to the kit, to loosen the bolts or nuts and to remove the license plate. There is a concern to do. There is room for improvement here.

  In view of such circumstances, the fastening kit according to the present invention aims to increase the rate at which the screws of the fastening kit are prevented from being removed by a third party different from the owner of the fastening kit.

  The present invention is a fastening kit including at least one of a male screw with a head and a female screw, and a socket that is a dedicated tool that can be used only for the screw, and the screw includes a hole in the socket and the socket. It has a tool fitting part that fits in the direction along the axis of the screw, and in several places in the circumferential direction of the outer peripheral surface of the tool fitting part, there are recessed parts that are recessed toward the axis of the screw. Each of the recesses is parallel to the axis of the screw and receives a tightening torque receiving surface that receives a tightening torque input from the socket, and receives a relaxation torque input from the socket. A relaxation torque receiving surface, and all of the tightening torque receiving surfaces are flat surfaces that coincide with a plane including the axis of the screw, and all of the relaxation torque receiving surfaces have an inner edge at the inside. And away from the flat surface than the edge It is a bulging surface that bulges from the inner end edge toward the outer end edge, and at least one of the tightening torque receiving surface and the relaxation torque receiving surface is parallel to the axis of the screw. In addition, at least one ridge portion is provided along the entire region in a specific direction, and at least one concave line portion is provided along the entire region in a direction parallel to the axial center of the screw.

  The fastening kit according to the present invention can be of a type that combines a male screw with a head and a socket, a type that combines a female screw and a socket, and a type that combines a male screw with a head, a female screw, and a socket. The male screw with a head is also called a bolt with a head, and the female screw is also called a nut. Further, the socket has a structure that has a hole that is recessed from one end in the longitudinal direction to the middle in the longitudinal direction of, for example, a round bar-shaped body. This socket has a configuration in which a rod-like handle is integrally provided on the other end in the longitudinal direction, or a configuration in which a separate rod-like handle is detachably attached to the other end in the longitudinal direction.

  In the above configuration, the shape of at least one of the tightening torque receiving surface and the relaxation torque receiving surface of the recessed portion of the screw has a unique shape that is different for each fastening kit according to the present invention, and when tightening and relaxing Since the socket used sometimes has a shape that only fits the tool fitting portion of the screw, when the fastening kit according to the present invention is mass-produced and sold, all the fastening kits are different from each other. That is, since the individual difference for each fastening kit according to the present invention can be increased as much as possible, the production number of the fastening kit can be increased as much as possible.

  Thereby, even if a large number of people purchase the fastening kit according to the present invention, in a situation where a screw purchased by a certain purchaser is screwed into an appropriate part, a third party different from the purchaser Even if a purchased socket is used, the probability that the hole of the socket cannot be fitted outside the tool fitting portion of the screw is increased. Therefore, it is possible to increase the crime prevention rate that prevents the screws from being loosened and removed.

  Extremely speaking, when the screw is appropriately screwed and attached to a site, the screw can be loosened and removed only by a socket owned by the person who wears the screw. If the fastening kit is used, for example, for attaching a license plate to a vehicle, it is possible to increase the crime prevention rate, such as increasing the rate at which the license plate is prevented from being stolen.

  Further, in the above configuration, since the relaxation torque receiving surface of each of the recessed portions of the screw is specified to be an inclined bulging surface, the screw is temporarily used as a tool other than the socket, for example, Even if a simple pliers is used, it cannot be loosened and removed.

  Specifically, when the screw is loosened and removed by the pliers, the pliers jaws are brought into contact with only the inclined bulging surfaces in the respective recessed portions of the screws to input the relaxation torque. It is assumed that In that case, since the bulging surface acts to slide the tip of the pliers, it becomes impossible to input a relaxation torque to the bulging surface. For this reason, even if the pliers are used, the screws cannot be loosened and removed.

  By the way, the ridge portion has a width smaller than the length from the inner end edge to the outer end edge of the tightening torque receiving surface or the relaxation torque receiving surface to be installed, and from the inner end edge to the It arrange | positions in the arbitrary positions of the range to an outer edge.

  In this configuration, since it is possible to change various installation positions of the ridges with respect to the tightening torque receiving surface or the relaxation torque receiving surface, individual differences for each fastening kit according to the present invention are maximized. It becomes possible to do.

  Further, the ridge is provided on at least one of the plurality of tightening torque receiving surfaces in the entire radial direction of the tightening torque receiving surface.

  In this structure, since the said protruding item | line part is a shape which can be processed comparatively easily, it becomes possible to suppress the raise of those manufacturing costs.

  Further, the concave portion has a width smaller than the length from the inner end edge to the outer end edge of the tightening torque receiving surface or the relaxation torque receiving surface to be installed, and from the inner end edge to the It arrange | positions in the arbitrary positions of the range to an outer edge.

  In this configuration, since it is possible to change various positions of the concave portions with respect to the tightening torque receiving surface or the relaxation torque receiving surface, individual differences for each fastening kit according to the present invention are as large as possible. It becomes possible to do.

  Further, at least one of the ridges is provided on at least one of the plurality of tightening torque receiving surfaces, and at least one of the concave ridges is provided on at least one of the plurality of relaxation torque receiving surfaces. Can be provided.

  Further, at least one of the concave strip portions is provided on at least one of the plurality of tightening torque receiving surfaces, and at least one of the convex strip portions is provided on at least one of the plurality of relaxation torque receiving surfaces. Can be provided.

  In addition, at least one of the ridges and the recesses may be provided on at least one of the plurality of tightening torque receiving surfaces.

  Further, at least one of the ridges and the recesses may be provided on at least one of the plurality of relaxation torque receiving surfaces.

  In addition, at least one of the convex ridges and the concave ridges are provided on at least one of the plurality of tightening torque receiving surfaces, and the convex is formed on at least one of the plurality of relaxation torque receiving surfaces. At least one strip and one concave strip can be provided.

  The fastening kit according to the present invention can increase the rate at which the screws of the fastening kit are prevented from being removed by a third party different from the owner of the fastening kit. Therefore, for example, when attaching an appropriate member (for example, a vehicle license plate) to an appropriate place (for example, a vehicle) using the fastening kit, a rate for preventing theft, or an opening / closing member (a valuables shelf and In the case of locking the electronic circuit storage door or the like in a closed state, the rate of preventing unintentional opening, that is, the crime prevention rate can be increased. Thus, a fastening kit with high crime prevention can be provided.

It is a perspective view showing appearance in one embodiment of a fastening kit concerning the present invention. In other embodiment of the fastening kit which concerns on this invention, it is a perspective view which shows an external appearance. It is a top view of the head of the external screw of FIG. It is a side view of the external thread of FIG. It is a top view of the internal thread of FIG. It is a side view of the internal thread of FIG. It is a figure which shows the state which looked at the hole of the socket of FIG. 1 and FIG. 2 from the opening side. FIG. 3 is a cross-sectional view of the socket of FIGS. 1 and 2. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is the figure which looked at only the clamping torque receiving surface of FIG. 34 from the front. In this figure, the lower side is the screw shaft side of the male screw. FIG. 36 is a modified example of the ridge portion of FIG. 35, and is a view of only the tightening torque receiving surface viewed from the front. In this figure, the lower side is the screw shaft side of the male screw. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread. It is another example of the hollow part with which an external thread and an internal thread are provided, Comprising: It is a top view which shows the example applied to the external thread.

  BEST MODE FOR CARRYING OUT THE INVENTION Best modes for carrying out the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 shows an embodiment of a fastening kit according to the present invention, and FIG. 2 shows another embodiment of a fastening unit according to the present invention. In the figure, 1 indicates the entire fastening kit.

  A fastening kit 1 shown in FIG. 1 includes a male screw with a head (hereinafter simply referred to as a male screw) 2 and a socket 3. The fastening kit 1 shown in FIG. 2 includes a female screw 4 and a socket 3.

  First, the male screw 2 shown in FIG. 1 has a configuration in which a head 22 as a tool fitting portion is provided on one end side in the longitudinal direction of the screw shaft 21. As shown in FIG. 4, the head portion 22 is formed in a substantially cylindrical shape, the upper corner portion of the outer peripheral surface thereof is rounded, and the lower side of the outer peripheral surface is a flared shape that is gradually expanded in diameter. It is said that.

  As shown in FIG. 3, depressions 24 are provided at several locations (eight locations in the figure) in the circumferential direction at the upper corners of the outer peripheral surface of the head portion 22. In this embodiment, the plurality of depressions 24 are provided at equal intervals in the circumferential direction.

  The recessed portion 24 is provided so as to be recessed from the outer peripheral edge of the head portion 22 toward the axis 23 side of the male screw 2. The hollow portion 24 is formed in a substantially V shape in a plan view that opens from the deepest position toward the opening. In other words, the recess 24 is formed so as to gradually widen from the axial center 23 side of the male screw 2 toward the outer peripheral edge of the head 22.

  The recess 24 has a tightening torque receiving surface 25 and a relaxation torque receiving surface 26 that are parallel to the axis 23 of the male screw 2.

  The tightening torque receiving surface 25 is disposed on the side that receives the tightening torque 100 input when the male screw 2 is tightened by the socket 3. Further, the relaxation torque receiving surface 26 is disposed on the side that receives the relaxation torque 200 that is input when the male screw 2 is loosened by the socket 3.

  The tightening torque receiving surface 25 and the relaxation torque receiving surface 26 are formed in unique shapes that are different for each fastening kit 1.

  In this embodiment, as shown in FIG. 3, all the tightening torque receiving surfaces 25 are convex and concave surfaces including a convex strip portion and a concave strip portion. Further, all the relaxation torque receiving surfaces 26 are bulged surfaces that bulge from the inner end edge 26a toward the outer end edge 26b.

  Here, first, the bulging surface is a partially arc-shaped curved surface in this embodiment, and its curvature radius is arbitrarily set. For example, a complex curved surface or a polygonal complex surface in which a large number of arcs are connected. It is also possible.

  And the concave and convex portion of the concave and convex surface means a concave portion provided along the entire region in the direction parallel to the axis 23 of the male screw 2 on the tightening torque receiving surface 25. The convex and concave ridge portion means a convex portion provided along the entire region in the direction parallel to the axis 23 of the male screw 2 on the tightening torque receiving surface 25.

  As shown in FIG. 3, the concave and convex surface portions are arranged in the inner diameter side region, and the convex and concave surface convex portions are arranged in the outer diameter side region.

  The concave and convex groove portions are provided so as to be depressed in the input direction of the tightening torque 100, and are curved in a partial arc shape in plan view, and the radius of curvature is arbitrarily set, For example, it is possible to use a compound curved surface or a polygonal compound surface in which a large number of arcs are connected. The maximum recessed portion of the recessed strip portion is disposed closer to the shaft center 23 than the center position of the entire length range from the inner end edge 25a to the outer end edge 25b.

  On the other hand, the ridge portion of the concavo-convex surface is provided so as to protrude in the direction opposite to the input direction of the tightening torque 100 and is narrowed toward the tip in plan view. The protruding end, that is, the outer end edge 25b of the protruding portion is located closer to the relaxation torque receiving surface 26 than the first virtual line 300. The first imaginary line 300 is a line that extends straight outward in the radial direction from the axial center 23 of the male screw 2 and passes through the inner end edge 25 a of the tightening torque receiving surface 25. The inner diameter side region of the ridge is a curved surface that is continuous with the same curvature as the curved surface of the ridge. This ridge portion corresponds to a “ridge portion” described in the claims.

  As shown in FIG. 3, the inner end edge 25 a of the tightening torque receiving surface 25 that is the uneven surface and the inner end edge 26 a of the relaxation torque receiving surface 26 that is the bulging surface are It is the deepest position, and both are arranged at the same position.

  Further, the outer end edge 26 b of the relaxation torque receiving surface 26, that is, the position where the relaxation torque receiving surface 26 is connected to the outer peripheral surface of the head 22 is more than the first end edge 26 a of the relaxation torque receiving surface 26. It is arranged at a position separated from the virtual line 300 toward the input direction of the relaxation torque 200. As a result, the second imaginary line 400 connecting the inner end edge 26a and the outer end edge 26b of the relaxation torque receiving surface 26 in a straight line is inclined with respect to the first imaginary line 300 by a predetermined angle α. Yes. This inclination angle α is also referred to as, for example, “an opening angle of the recessed portion 24”.

  Moreover, although the internal thread 4 shown in FIG. 2 is formed in the same external shape as the head part 22 of the external thread 2, it demonstrates in detail below.

  The female screw 4 has a configuration in which a screw hole 42 is provided in an axis 43 of a substantially cylindrical body 41. As shown in FIG. 6, the upper corner portion of the outer peripheral surface of the female screw 4 is rounded and chamfered, and the lower side of the outer peripheral surface has a flared shape that is gradually expanded in diameter. The body 41 corresponds to a “tool fitting portion” recited in the claims.

  As shown in FIG. 5, depressions 44 are provided at several places (eight places in the figure) in the circumferential direction at the upper corners of the outer peripheral surface of the female screw 4. The multiple depressions 44 are provided at equal intervals in the circumferential direction in this embodiment.

  The recessed portion 44 is provided so as to be recessed from the outer peripheral edge of the female screw 4 toward the axis 43 side. The recess 44 is formed in a substantially V shape in plan view so as to open from the deepest position toward the opening. In other words, the recess 44 is formed so as to gradually become wider from the axial center 43 side of the female screw 4 toward the outer peripheral edge.

  The recess 44 has a tightening torque receiving surface 45 and a relaxation torque receiving surface 46 which are parallel to the axis 43 of the female screw 4.

  The tightening torque receiving surface 45 is disposed on the side that receives the tightening torque 100 that is input when the female screw 4 is tightened by the socket 3. Further, the relaxation torque receiving surface 46 is disposed on the side that receives the relaxation torque 200 that is input when the female screw 4 is loosened by the socket 3.

  The tightening torque receiving surface 45 and the relaxation torque receiving surface 46 are formed in different unique shapes for each fastening kit 1.

  In this embodiment, as shown in FIG. 5, all the tightening torque receiving surfaces 45 are convex and concave surfaces including a convex strip portion and a concave strip portion. Further, all the relaxation torque receiving surfaces 46 are bulging surfaces that bulge from the inner end edge 46a toward the outer end edge 46b.

  Here, first, the bulging surface is a partially arc-shaped curved surface in this embodiment, and its curvature radius is arbitrarily set. For example, a complex curved surface or a polygonal complex surface in which a large number of arcs are connected. It is also possible.

  The concave and convex groove portion means a concave portion provided along the entire region of the tightening torque receiving surface 45 in a direction parallel to the axis 43 of the female screw 4. The convex and concave ridge portion means a convex portion provided along the entire region of the tightening torque receiving surface 45 in a direction parallel to the axis 43 of the female screw 4.

  As shown in FIG. 5, the concave and convex surface ridges are arranged in the inner diameter side region, and the convex and concave ridges are arranged in the outer diameter side region.

  The concave and convex groove portions are provided so as to be depressed in the input direction of the tightening torque 100, and are curved in a partial arc shape in plan view, and the radius of curvature is arbitrarily set, For example, it is possible to use a compound curved surface or a polygonal compound surface in which a large number of arcs are connected. The maximum recessed portion of the recessed strip portion is disposed closer to the shaft center 43 than the center position of the entire length range from the inner end edge 45a to the outer end edge 45b.

  On the other hand, the ridge portion of the concavo-convex surface is provided so as to protrude in the direction opposite to the input direction of the tightening torque 100 and is narrowed toward the tip in plan view. The protruding end, that is, the outer end edge 45b of the protruding portion is located closer to the relaxation torque receiving surface 46 than the first virtual line 300. The first imaginary line 300 is a line that extends straight outward in the radial direction from the axis 43 of the female screw 4 and passes through the inner end edge 45 a of the tightening torque receiving surface 45. The inner diameter side region of the ridge is a curved surface that is continuous with the same curvature as the curved surface of the ridge. This ridge portion corresponds to a “ridge portion” described in the claims.

  As shown in FIG. 5, the inner end edge 45 a of the tightening torque receiving surface 45 that is the uneven surface and the inner end edge 46 a of the relaxation torque receiving surface 46 that is the bulging surface are It is the deepest position, and both are arranged at the same position.

  Further, the outer edge 46 b of the relaxation torque receiving surface 46, that is, the position connected to the outer peripheral surface of the body 41 on the relaxation torque receiving surface 46 is more than the first virtual edge than the inner end edge 46 a of the relaxation torque receiving surface 46. It is arranged at a position separated from the line 300 toward the input direction of the relaxation torque 200. As a result, the second imaginary line 400 connecting the inner end edge 46a and the outer end edge 46b of the relaxation torque receiving surface 46 in a straight line is inclined with respect to the first imaginary line 300 by a predetermined angle α. Yes. This inclination angle α is also referred to as, for example, “an opening angle of the recess 44”.

  Next, the socket 3 shown in FIGS. 1 and 2 is a dedicated tool for enabling a tightening operation and a loosening operation of only the male screw 2 and the female screw 4 alone.

  The socket 3 has a configuration in which a hole 32 is provided that is recessed from one end side in the axial direction of the round bar-shaped body 31 to the middle in the axial direction. The hole 32 can be fitted to the head 22 of the male screw 2 and the outer peripheral surface of the female screw 4 in a state of being aligned with the axis 23 of the male screw 2 and the axis 43 of the female screw 4. .

  The inner peripheral surface of the hole 32 has a substantially circular shape, and overhang portions 34 are provided at several places (eight places in the figure) in the circumferential direction, as shown in FIGS. The multiple projecting portions 34 are provided at equal intervals in the circumferential direction in this embodiment.

  The projecting portion 34 is formed in a shape so as to be in surface contact with the recess 24 of the male screw 2 and the recess 44 of the female screw 4. Specifically, the projecting portion 34 is provided so as to project from the inner peripheral surface side of the hole 32 toward the shaft center 33 side, and gradually becomes narrower from the base side toward the tip side. It is substantially V-shaped in plan view.

  The projecting portion 34 has a tightening torque transmission surface 35 and a relaxation torque transmission surface 36 that are parallel to the axis 33 of the socket 3.

  The tightening torque transmission surface 35 is disposed on the side that transmits the tightening torque 100 input when the male screw 2 and the female screw 4 are tightened to the tightening torque receiving surface 25 of the male screw 2 and the tightening torque receiving surface 45 of the female screw 4. Has been.

  Further, the relaxation torque transmission surface 36 is disposed on the side that transmits the relaxation torque 200 input when the male screw 2 and the female screw 4 are loosened to the relaxation torque receiving surface 26 of the male screw 2 and the relaxation torque receiving surface 46 of the female screw 4. Yes.

  In this embodiment, all of the tightening torque transmission surfaces 35 are formed into a shape that is in contact with the tightening torque receiving surface 25 of the male screw 2 and the tightening torque receiving surface 45 of the female screw 4, that is, has an uneven surface. . Further, all the relaxation torque transmitting surfaces 36 are formed into a shape that is in contact with the relaxation torque receiving surface 26 of the male screw 2 and the relaxation torque receiving surface 46 of the female screw 4, that is, a depressed surface.

  Here, first, the depressed surface is a partially arcuate curved surface obtained by inverting the bulging surfaces of the relaxation torque receiving surface 26 of the male screw 2 and the relaxation torque receiving surface 46 of the female screw 4 in this embodiment, The curvature radius is arbitrarily set. For example, it can be a complex curved surface obtained by connecting a large number of arcs or a polygonal complex surface.

  Further, the concave and convex portion of the concave and convex surface means a concave portion provided along the entire region in the direction parallel to the axis 33 of the socket 3 in the tightening torque transmission surface 35. The convex and concave ridge portion means a convex portion provided along the entire region in the direction parallel to the axis 33 of the socket 3 in the tightening torque transmission surface 35.

  As shown in FIG. 7, the ridges of the concavo-convex surface are arranged in the inner diameter side region, and the ridges of the concavo-convex surface are arranged in the outer diameter side region.

  The convex and concave ridges are provided so as to protrude in the input direction of the tightening torque 100, and the concave portions of the tightening torque receiving surface 25 of the male screw 2 and the tightening torque receiving surface 45 of the female screw 4 in plan view. The curved surface is a partial arc-shaped curved surface in which the strip is inverted, and the radius of curvature is arbitrarily set. For example, it can be a complex curved surface connecting many arcs or a polygonal complex surface. is there. The maximum protrusion of the ridge is disposed closer to the axis 33 than the center position of the entire length range from the inner end edge 35a to the outer end edge 35b.

  On the other hand, the concave portion of the concave and convex surface is shaped so that the convex portions of the tightening torque receiving surface 25 of the male screw 2 and the tightening torque receiving surface 45 of the female screw 4 are reversed in plan view. It is provided so as to sink in the direction opposite to the input direction of the applied torque 100. The bottom of the concave portion, that is, the outer edge 45 b of the tightening torque transmission surface 35 is located closer to the relaxation torque receiving surface 46 than the third virtual line 500. The third imaginary line 500 is a line that extends straight outward in the radial direction from the axis 33 of the socket 3 and passes through the inner end edge 35 a of the tightening torque transmission surface 35.

  As shown in FIG. 7, the inner end edge 35 a of the tightening torque transmission surface 35 made of the uneven surface and the inner end edge 36 a of the relaxation torque transmission surface 36 made of the recessed surface are at the tip of the overhanging portion 34. Both are arranged at the same position.

  Further, the outer edge 36 b of the relaxation torque transmission surface 36, that is, the position where the relaxation torque transmission surface 36 is connected to the inner peripheral surface of the hole 32 is the third edge than the inner edge 36 a of the relaxation torque transmission surface 36. It is arranged at a position separated from the imaginary line 500 toward the input direction of the relaxation torque 200. As a result, the fourth imaginary line 600 connecting the inner end edge 36 a and the outer end edge 36 b of the relaxation torque transmitting surface 36 in a straight line is inclined with respect to the third imaginary line 500 by a predetermined angle β. Yes.

  In the case of such a socket 3, when the socket 3 is fitted to the male screw 2 or the female screw 4 and is tightened, the tightening torque 100 input along with the tightening operation is transmitted to the tightening torque transmission surface 35 of the socket 3. Is transmitted to the tightening torque receiving surface 25 of the male screw 2 or the tightening torque receiving surface 45 of the female screw 4, so that the male screw 2 or the female screw 4 can be screwed into a predetermined portion.

  Thereafter, in order to loosen and remove the screwed male screw 2 or female screw 4, when the socket 3 is fitted to the male screw 2 or the female screw 4 and a loosening operation is performed, the relaxation torque that is input along with the loosening operation Since 200 is transmitted from the relaxation torque transmission surface 36 of the socket 3 to the relaxation torque receiving surface 26 of the male screw 2 or the relaxation torque receiving surface 46 of the female screw 4, the male screw 2 or the female screw 4 is unscrewed. , Removed.

  As described above, the hollow portion 24 of the male screw 2 and the hollow portion 44 of the female screw 4 have different unique shapes for each fastening kit 1 according to the present invention, and the socket 3 used when tightening and relaxing the socket 3 is also concerned. Since it is configured to fit only the male screw 2 or only the female screw 4, when the fastening kit 1 according to the present invention is mass-produced and sold, the fastening kits 1 are different from each other.

  As a result, even if a large number of people purchase the fastening kit 1 according to the present invention, in the situation where the male screw 2 or the female screw 4 purchased by a certain purchaser is screwed into an appropriate part, the purchaser is Even if a socket 3 purchased by a different third party is used, the hole 32 of the socket 3 cannot be fitted to the head 22 of the male screw 2 or the outer peripheral surface of the female screw 4. Therefore, the male screw 2 or the female screw 4 cannot be loosened and removed.

  In other words, when the male screw 2 or the female screw 4 is screwed and attached to an appropriate part, the male screw 2 or the female screw 4 can be loosened and removed only by the socket 3 owned by the person wearing the screw. Although not shown, when the fastening kit 1 is used for attaching an appropriate member (for example, a license plate) to an appropriate place (for example, a vehicle), it is possible to increase the rate of preventing the appropriate member from being stolen. In addition, when the fastening kit 1 is used, for example, when locking an opening / closing member (such as a valuables shelf or an electronic circuit storage door) in a closed state, the opening / closing member is prevented from being unintentionally opened. It will be possible to increase the rate of crime prevention, and contribute to increasing the crime prevention rate.

  Moreover, in the said embodiment, since the tightening torque receiving surfaces 25 and 45 made into an uneven surface and the relaxation torque receiving surfaces 26 and 46 made into a bulging surface are made into the shape which can be processed comparatively easily, those An increase in manufacturing cost can be suppressed.

  In particular, since the relaxation torque receiving surface 26 of the male screw 2 and the relaxation torque receiving surface 46 of the female screw 4 shown in the above embodiment are formed on an inclined bulging surface, a tool other than the socket 3 such as a general pliers ( Even if it is used, it cannot be loosened and removed.

  Specifically, although not shown, if the male screw 2 and the female screw 4 are loosened and removed by the pliers, a loosening torque receiving surface 26 composed of an inclined bulging surface of the male screw 2 and an inclined bulging surface of the female screw 4. It is assumed that the operation is performed such that the relaxation torque 200 is input by bringing the tip of the pliers into contact with only the relaxation torque receiving surface 46 made of In that case, since the relaxation torque receiving surfaces 26 and 46 act so as to slide the jaws of the pliers, the relaxation torque 200 cannot be input to the relaxation torque receiving surfaces 26 and 46. . For this reason, even if the pliers are used, the male screw 2 and the female screw 4 cannot be loosened and removed.

  In addition, this invention is not limited only to the said embodiment, It can change suitably in the range equivalent to the claim and the said range.

  (1) In the above embodiment, the fastening kit 1 of the type combining the male screw 2 and the socket 3 and the fastening kit 1 of the type combining the female screw 4 and the socket 3 are shown. For example, a fastening kit of a type in which the male screw 2, the female screw 4, and the socket 3 are combined can be used.

  (2) In the above embodiment, the example in which the recesses 24 of the male screw 2 and the recesses 44 of the female screw 4 are arranged at equal intervals in the circumferential direction is given, but the present invention is not limited to this. For example, it is possible to arrange them at unequal intervals in the circumferential direction.

  (3) In the above embodiment, an example in which the number of the recessed portions 24 of the male screw 2 and the number of the recessed portions 44 of the female screw 4 is an even number is given, but the present invention is not limited to this example. Is possible.

  (4) In the above-described embodiment, each of the plurality of depressions 24 of the male screw 2 and the plurality of depressions 44 of the female screw 4 has a unique shape (see each of the above embodiments and each of the following embodiments). ). In this way, by changing the shape of each of the many recessed portions 24 and 44, it becomes possible to increase the number of manufactured different fastening kits 1 as much as possible.

  (5) In the above-described embodiment, the shape of each of the tightening torque receiving surfaces 25 of the male screw 2 and the shape of each of the tightening torque receiving surfaces 45 of the female screw 4 are combined curved surfaces, for example, for one cycle of a sine curve. Is possible.

  For example, FIG. 9 shows an example in which the shape of each tightening torque receiving surface 25 of the male screw 2 is a compound curved surface having a shape corresponding to one cycle of a sine curve. This example is included in the technical idea described in claim 7.

  The compound curved surface corresponding to one cycle of the sine curve is a concave strip portion in which the inner diameter side half region in the radial direction of the tightening torque receiving surface 25 is recessed toward the input direction of the tightening torque 100, and tightening is performed. The outer diameter side half region in the radial direction of the attached torque receiving surface 25 is a protruding ridge that protrudes in the direction opposite to the input direction of the tightening torque 100. These concave strips and convex strips have a partial arc shape, and the radius of curvature is appropriately set. For example, a complex curved surface or a polygonal complex surface in which a large number of arcs are connected can be used. is there.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

  (6) In the above-described embodiment, the shape of each of the tightening torque receiving surfaces 25 of the male screw 2 and the shape of each of the tightening torque receiving surfaces 45 of the female screw 4 can be, for example, waved.

  For example, FIG. 10 shows a groove portion that dents the inner diameter side approximately 1/3 region and the outer diameter side approximately 1/3 region in the radial direction of the tightening torque receiving surface 25 of the male screw 2 toward the input direction of the tightening torque 100. In addition, an example is shown in which a middle approximately 1/3 region in the radial direction of the tightening torque receiving surface 25 is a protruding ridge protruding in the direction opposite to the input direction of the tightening torque 100. This example is included in the technical idea described in claim 7.

  In addition, the said recessed streak part is made into the partial circular arc shape, and the curvature radius is set suitably. Moreover, the said protruding item | line part is narrow toward the front-end | tip in planar view, and protrudes from the 1st virtual line 300 to the relaxation torque receiving surface 26 side. The first imaginary line 300 is a line that extends straight outward in the radial direction from the axial center 23 of the male screw 2 and passes through the inner end edge 25 a of the tightening torque receiving surface 25.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

  (7) In the above-described embodiment, the shape of each of the tightening torque receiving surfaces 25 of the male screw 2 and the shape of each of the tightening torque receiving surfaces 45 of the female screw 4 can be, for example, a saw blade shape.

  For example, FIG. 11 shows a groove portion that dents the inner diameter side approximately 1/3 region and the outer diameter side approximately 1/3 region in the radial direction of the tightening torque receiving surface 25 of the male screw 2 toward the input direction of the tightening torque 100. In addition, an example is shown in which a middle approximately 1/3 region in the radial direction of the tightening torque receiving surface 25 is a protruding ridge protruding in the direction opposite to the input direction of the tightening torque 100. This example is included in the technical idea described in claim 7.

  In addition, the said recessed stripe part is made into the V shape which becomes narrow toward the depth direction in planar view. Moreover, the said protruding item | line part is made into the V shape which becomes narrow toward the front-end | tip in planar view, and protrudes from the 1st virtual line 300 to the relaxation torque receiving surface 26 side. The first imaginary line 300 is a line that extends straight outward in the radial direction from the axial center 23 of the male screw 2 and passes through the inner end edge 25 a of the tightening torque receiving surface 25.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

  (8) FIG. 12 shows an example related to the example shown in FIG. In this example, one protruding strip portion 27 and one concave strip portion 28 are provided side by side on all tightening torque receiving surfaces 25 of the male screw 2, and one concave strip portion 28 is provided on the relaxation torque receiving surface 26. Is provided. This example is included in the technical idea described in claims 6 and 7.

  Specifically, the ridge 27 of the tightening torque receiving surface 25 has a substantially triangular shape in plan view that is sharpened toward the tip in the protruding direction. The concave portion 28 of the tightening torque receiving surface 25 is shaped to be rounded and recessed toward the input direction of the tightening torque 100. The recess 28 of the relaxation torque receiving surface 26 has a shape in which a region (refer to a two-dot chain line) from the inner end edge 26a to the middle position toward the outer end edge 26b is retreated inward in the radial direction.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in such a configuration, the same operations and effects as in the above embodiment can be obtained.

  (9) FIG. 13 shows another example. In this example, one protruding strip portion 27 and one concave strip portion 28 are provided side by side on any one tightening torque receiving surface 25 of the male screw 2, and one protruding strip is provided on the relaxation torque receiving surface 26. A portion 27 is provided. This example is included in the technical idea described in claims 6 and 7.

  Specifically, the recess 28 of the tightening torque receiving surface 25 is provided so as to be recessed toward the input direction of the tightening torque 100 in the outer diameter side half region (see hatching) of the tightening torque receiving surface 25. Yes. The protruding portion 27 of the tightening torque receiving surface 25 protrudes in the inner diameter side half region (see cross-hatching) of the tightening torque receiving surface 25 in the direction opposite to the input direction of the tightening torque 100 (the input direction of the relaxation torque 200). It is provided to do. The convex portion 27 of the relaxation torque receiving surface 26 is provided so as to protrude radially outward in the middle from the inner end edge 26a to the outer end edge 26b of the relaxation torque receiving surface 26 (see the dot pattern).

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in such a configuration, the same operations and effects as in the above embodiment can be obtained.

  (10) FIG. 14 shows still another example. In this example, one protruding strip portion 27 is provided on any one tightening torque receiving surface 25 of the male screw 2, and one concave strip portion 28 is provided on the relaxation torque receiving surface 26. This example is included in the technical idea described in claim 5.

  Specifically, the ridge portion 27 has a shape that protrudes in the entire radial direction of the tightening torque receiving surface 25 in the direction opposite to the input direction of the tightening torque 100 (the input direction of the relaxation torque 200). This convex part 27 is made into the curved surface of a partial circular arc shape, and the curvature radius is set arbitrarily. The concave portion 28 is shaped to be recessed radially inward in a predetermined region between the inner end edge 26 a and the outer end edge 26 b of the relaxation torque receiving surface 26.

  As described above, when the protruding portion 27 formed of a partially arcuate curved surface is provided in the entire range of the tightening torque receiving surface 25, the maximum protruding portion of the protruding portion 27 is formed from the inner end edge 25a to the outer end. It arrange | positions in the center position of the full length range to the edge 25b. However, the position of the maximum protrusion is not limited to the above description.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2. Even in such a configuration, the same operations and effects as in the above embodiment can be obtained.

  (11) FIG. 15 shows an example related to the example shown in FIG. In this example, one protruding strip portion 27 is provided on any one tightening torque receiving surface 25 of the male screw 2, and one concave strip portion 28 is provided on the relaxation torque receiving surface 26. This example is included in the technical idea described in claim 5.

  That is, the ridge 27 is formed in a shape protruding in the radial direction intermediate region of the tightening torque receiving surface 25 in the direction opposite to the input direction of the tightening torque 100 (the input direction of the relaxation torque 200). This convex part 27 is made into the curved surface of a partial circular arc shape, and the curvature radius is set arbitrarily. The concave portion 28 is shaped to be recessed inward in the radial direction from the inner end edge 26a of the relaxation torque receiving surface 26 to a predetermined region in front of the outer end edge 26b.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  Next, in the following (12) to (21), a part of the arrangement example of the ridges 27 and the ridges 28 included in the present invention will be described. In the drawings quoted in this description, the shapes of the convex stripe portions 27 and the concave stripe portions 28 are simply described so as not to be limited.

  (12) FIGS. 16A, B, and C and FIGS. 17A, B, and C show examples related to FIGS. This example is included in the technical idea described in claim 7.

  That is, for example, as shown in FIG. 16A (a), one protruding strip portion 27 and one concave strip portion 28 are installed as a set on any one tightening torque receiving surface 25 of the male screw 2. As shown in FIGS. 16A (b) and (c) to FIGS. 16B and 16C, the number of tightening torque receiving surfaces 25 on which the one set of ridges 27 and ridges 28 are to be installed is counterclockwise. Increasing one by one can be considered.

  Specifically, in (a) of FIG. 16A, the set object of the set of ridges 27 and ridges 28 is set to one of a plurality (for example, 8) of tightening torque receiving surfaces 25. An example is shown. FIG. 16A (b) shows an example in which two sets of the tightening torque receiving surfaces 25 are set as the installation targets of the one set of convex strips 27 and concave strips 28. FIG. 16A (c) shows an example in which any one of a plurality of tightening torque receiving surfaces 25 is set as the installation target of the one set of convex strips 27 and concave strips 28. FIG. 16B (d) shows an example in which any one of a plurality of tightening torque receiving surfaces 25 is set as the installation target of the one set of convex strip 27 and concave strip 28. FIG. 16B (e) shows an example in which any one of a plurality of tightening torque receiving surfaces 25 is set as the installation target of the one set of convex strips 27 and concave strips 28. FIG. 16C (f) shows an example in which any one of a plurality of tightening torque receiving surfaces 25 is set as the installation target of the one set of convex strips 27 and concave strips 28. FIG. 16C (g) shows an example in which any one of the plurality of tightening torque receiving surfaces 25 is set as the installation target of the one set of convex strips 27 and concave strips 28.

  In addition, as shown in FIG. 16A (b), for an example in which two sets of the tightening torque receiving surfaces 25 of the total number of tightening torque receiving surfaces 25 are set as the one set of the protruding strip portions 27 and the concave strip portions 28, The example shown to (a) of FIG. 17A can also be considered. As shown in FIG. 16A (c), an example in which three sets of the tightening torque receiving surfaces 25 of the total number of the tightening torque receiving surfaces 25 are set as the installation target of the one set of convex strips 27 and concave strips 28 is shown in FIG. An example shown in (b) of FIG. As shown in FIG. 16B (d), an example in which four sets of the total number of tightening torque receiving surfaces 25 are set as the installation targets of the one set of convex strips 27 and concave strips 28 is shown in FIG. 17A. Examples shown in (c) of FIG. 17 and (e) of FIG. 17B are also conceivable. As shown in FIG. 16B (e), an example in which the set of protrusions 27 and recesses 28 is set to five of a total of eight tightening torque receiving surfaces 25 is shown in FIG. 17B. Examples shown in (d) of FIG. 17 and (f) of FIG. 17C are also conceivable. As shown in FIG. 16 (f), for an example in which the set of protrusions 27 and recesses 28 is set to six of the total eight tightening torque receiving surfaces 25, FIG. The example shown in (g) is also conceivable.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, although the shape of the convex strip part 27 and the concave strip part 28 may be the same as the example shown in FIG. 3, FIG. 9, it can be set as arbitrary shapes. The unique fastening kit 1 can be further increased by variously changing the shapes of the ridges 27 and the ridges 28.

  (13) FIGS. 18A, 18B and 18C show examples developed from the examples shown in FIGS. This example is included in the technical idea described in claim 5.

  That is, for example, as shown in FIG. 14 or FIG. 15, one ridge portion 27 is provided on the tightening torque receiving surface 25 of any one recess 24, and the relaxation torque receiving surface of the same recess 24 is the same as described above. 18A, B, and C, as shown in FIGS. 18A, 18B and 18C, without changing the installation position of the ridge 27, the ridge 28 It is conceivable to shift the installation positions one by one in the counterclockwise direction.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, although the shape of the protruding item | line part 27 and the recessed item part 28 may be the same as the example shown in FIG. 14 or FIG. 15, it can be set as arbitrary shapes. Further, the installation position of the ridges 27 with respect to the tightening torque receiving surface 25 and the installation position of the ridges 28 with respect to the relaxation torque receiving surface 26 can be arbitrary. for that reason. The unique fastening kit 1 can be further increased by variously changing the shapes and installation positions of the ridges 27 and the ridges 28.

  (14) FIGS. 19A, 19B and 19A, 20B show examples developed from the examples shown in FIGS. This example is included in the technical idea described in claim 5.

  That is, for example, as shown in FIG. 14 or FIG. 15, one ridge portion 27 is provided on the tightening torque receiving surface 25 of any one recess 24, and the relaxation torque receiving surface of the same recess 24 is the same as described above. 19A, B, and C, as shown in FIGS. 19A, 19B, and 19C, when the one ridge portion 27 and the one ridge portion 28 are set as one set. It is conceivable to increase the number of the recessed portions 24 that are the installation targets of the pair of protruding strip portions 27 and the recessed strip portions 28 one by one in the counterclockwise direction.

  Specifically, (a) of FIG. 19A shows an example in which two sets of eight depressions 24 are set as the installation targets of the one set of protrusions 27 and recesses 28. . FIG. 19A (b) shows an example in which three sets of eight depressions 24 are set as the installation targets of the one set of protrusions 27 and recesses 28. FIG. 19A (c) shows an example in which the set of protrusions 27 and recesses 28 is set to four of a total of eight depressions 24. FIG. 19B (d) shows an example in which five of the total number of depressions 24 are set as the set of protrusions 27 and recesses 28 of the set. FIG. 19B (e) shows an example in which six sets of the total number of the recessed portions 24 are set as the installation targets of the one set of the protruding line portions 27 and the recessed line portions 28. FIG. 19C (f) shows an example in which seven of the total of eight recessed portions 24 are set as the installation targets of the one set of convex strip portion 27 and concave strip portion 28. FIG. 19C (g) shows an example in which the set of protrusions 27 and recesses 28 of the set includes all the depressions 24 in total.

  Moreover, as shown to (a) of FIG. 19A, about the example which makes the installation object of the said one set of convex strip part 27 and the concave strip part 28 into two of the total number of the hollow parts 24, FIG. Examples shown in (a) to (c) are also conceivable. As shown in FIG. 19A (b), an example in which three sets of the dents 24 of the total number of the dents 27 and the one set of ridges 27 are set to three of the eight depressions 24 in FIG. The example shown in FIG. As shown in (c) of FIG. 19A, an example in which the set of projections 27 and recesses 28 is set to four of the total number of the depressions 24 as shown in FIG. The example shown in FIG. As shown in FIG. 19B (e), an example in which the set of projections 27 and recesses 28 is set to six of the total number of depressions 24 as shown in FIG. The example shown in FIG.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, although the shape of the protruding item | line part 27 and the recessed item part 28 may be the same as the example shown in FIG. 14 or FIG. 15, it can be set as arbitrary shapes. Further, the installation position of the ridges 27 with respect to the tightening torque receiving surface 25 and the installation position of the ridges 28 with respect to the relaxation torque receiving surface 26 can be arbitrary. for that reason. The unique fastening kit 1 can be further increased by variously changing the shapes and installation positions of the ridges 27 and the ridges 28.

  (15) FIGS. 21A, 21B and 21C show an example in which the ridges 27 and the ridges 28 shown in FIGS. 18A, 18B and 18C are installed oppositely. This example is included in the technical idea described in claim 6.

  That is, as shown in (a) of FIG. 21A, one concave strip portion 28 is provided on the tightening torque receiving surface 25 of any one of the recess portions 24, and the relaxation torque receiving surface of the same recess portion 24 as described above. As shown in FIGS. 21A and 21B, and FIGS. 21B and C, the installation position of the concave stripe portion 28 is fixed, with reference to an example in which one convex stripe portion 27 is provided on the 26. Without changing, it is conceivable to shift the installation position of the ridges 27 one by one in the counterclockwise direction.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, the shape of the said convex strip part 27 and the concave strip part 28 is arbitrary, and also the installation position of the concave strip part 28 with respect to the fastening torque receiving surface 25 and the installation position of the convex strip part 27 with respect to the relaxation torque receiving surface 26 are demonstrated. Is optional. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the ridges 27 and the ridges 28.

  (16) FIGS. 22A, 22B, 22C, and 23A, B show an example developed from the example shown in FIG. 21A (a). This example is included in the technical idea described in claim 6.

  That is, as shown in (a) of FIG. 21A, one concave strip portion 28 is provided on the tightening torque receiving surface 25 of any one of the recess portions 24, and the relaxation torque receiving surface of the same recess portion 24 as described above. 22A, B, and C, as shown in FIGS. 22A, 22B, and 22C, when one ridge portion 27 and one ridge portion 27 are set as one set. It is conceivable to increase the number of the recessed portions 24 to be installed with the set of concave portions 28 and convex portions 27 one by one in the counterclockwise direction.

  Specifically, (a) of FIG. 22A shows an example in which two sets of the recessed portions 24 are set as the installation targets of the one set of the recessed portion 28 and the protruding portion 27. . FIG. 22A (b) shows an example in which three sets of the recesses 24 in total are set as the objects of installation of the one set of recess 28 and protrusion 27. FIG. 22A (c) shows an example in which four sets of eight recess portions 24 are set as the installation targets of the one set of concave stripe portion 28 and convex stripe portion 27. FIG. 22B (d) shows an example in which five sets of eight depressions 24 are set as the installation targets of the one set of concave stripes 28 and convex stripes 27. FIG. 22B (e) shows an example in which six sets of the total number of the recessed portions 24 are set as the installation targets of the one set of the recessed stripe portions 28 and the protruding stripe portions 27. FIG. 22C (f) shows an example in which seven of the total number of the recessed portions 24 are set as the installation targets of the one set of the recessed stripe portions 28 and the protruding stripe portions 27. FIG. 22C (g) shows an example in which the one set of concave stripe portion 28 and convex stripe portion 27 is installed in all of the eight depressions 24 in total.

  Moreover, as shown to (a) of FIG. 22A, about the example which makes the installation object of the said 1 set of concave strip part 28 and the convex strip part 27 into two of the total number of the hollow parts 24, FIG. Examples shown in (a) to (c) are also conceivable. As shown in FIG. 22A (b), an example in which three sets of the recesses 24 of the total number of the depressions 28 and the projections 27 are set to three of the eight depressions 24 in FIG. The example shown in FIG. As shown in (c) of FIG. 22A, an example in which the set of the concave portions 28 and the convex portions 27 is set to four of the total number of the recessed portions 24 as shown in FIG. The example shown in FIG. As shown in (e) of FIG. 22B, an example in which the set of the concave portions 28 and the convex portions 27 is set to six of the total number of the recessed portions 24 as shown in FIG. The example shown in FIG.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  The shapes of the concave stripe portion 28 and the convex stripe portion 27 are arbitrary, and the installation position of the concave stripe portion 28 with respect to the tightening torque receiving surface 25 and the installation position of the convex stripe portion 27 with respect to the relaxation torque receiving surface 26. Is optional. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the concave portion 28 and the convex portion 27.

  (17) In FIGS. 24A, B, C and FIGS. 25A, 25B, there is an example in which one ridge 27 and one ridge 28 are provided on at least one of the plurality of relaxation torque receiving surfaces 26. It is shown. In this illustrated example, the concave strip portion 28 is disposed near the inner end edge 26a of the relaxation torque receiving surface 26, and the convex strip portion 27 is disposed near the outer end edge 26b. In addition, the said 1 protruding item | line part 27 and the said one recessed item part 28 are made into 1 set. This example is included in the technical idea described in claim 8.

  That is, in FIGS. 24A, 24B, and 24C, the number of the loose torque receiving surfaces 26 on which the one set of concave portions 28 and convex portions 27 are to be installed is increased by one in the counterclockwise direction.

  Specifically, (a) of FIG. 24A shows an example in which the set of concave stripe portions 28 and the convex stripe portions 27 is set to one of a total of eight relaxation torque receiving surfaces 26. ing. FIG. 24A (b) shows an example in which two sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of concave stripe portion 28 and convex stripe portion 27. FIG. 24A (c) shows an example in which three sets of the relaxation torque receiving surfaces 26 in total are set as the installation targets of the one set of concave stripe portion 28 and convex stripe portion 27. FIG. 24B (d) shows an example in which four sets of the eight relaxing torque receiving surfaces 26 are set as the objects of installation of the one set of concave ridge portions 28 and convex ridge portions 27. FIG. 24B (e) shows an example in which the set of concave portions 28 and the convex portions 27 is set to five of the eight relaxing torque receiving surfaces 26 in total. FIG. 24B (f) shows an example in which six sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of concave stripe portion 28 and convex stripe portion 27. FIG. 24C (g) shows an example in which seven sets of the relaxation torque receiving surfaces 26 in total are set as the installation targets of the one set of concave stripe portion 28 and convex stripe portion 27. FIG. 24C (h) shows an example in which all of the eight relaxing torque receiving surfaces 26 are set as the objects of installation of the one set of concave stripe portion 28 and convex stripe portion 27.

  Further, as shown in FIG. 24A (b), an example in which two sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of the concave portions 28 and the convex portions 27 is shown in FIG. Examples shown in (A) to (c) of 25A are also conceivable. As shown in (d) of FIG. 24B, an example in which four sets of the total eight relaxing torque receiving surfaces 26 are set as the set of the concave portions 28 and the convex portions 27 is shown in FIG. 25B. Examples shown in (d) and (e) are also conceivable. As shown in (f) of FIG. 24B, an example in which six sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of the concave portions 28 and the convex portions 27 in FIG. 25B. The example shown in (f) is also conceivable.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, the shape of the said recessed strip part 28 and the protruding strip part 27 is arbitrary, and each installation position of the recessed strip part 28 and the protruding strip part 27 with respect to the relaxation torque receiving surface 26 is arbitrary. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the concave portion 28 and the convex portion 27.

  (18) FIGS. 26A, B, C and FIGS. 27A, B show an example in which the concave strip 28 and the convex strip 27 shown in FIGS. 24A, B, C and 25A, 25B are installed oppositely. ing. In this illustrated example, a convex strip portion 27 is disposed near the inner end edge 26a of the relaxation torque receiving surface 26, and a concave strip portion 28 is disposed near the outer end edge 26b. One recess 28 and one protrusion 27 are set as one set. This example is included in the technical idea described in claim 8.

  That is, in FIGS. 26A, 26B, and 26C, the number of the loose torque receiving surfaces 26 on which the one set of ridges 27 and the ridges 28 are to be installed is increased by one in the counterclockwise direction.

  Specifically, FIG. 26A (a) shows an example in which the set of protrusions 27 and recesses 28 is set to one of a total of eight relaxation torque receiving surfaces 26. ing. FIG. 26A (b) shows an example in which two sets of the relaxation torque receiving surfaces 26 in total are set as the installation targets of the one set of convex strips 27 and concave strips 28. FIG. 26A (c) shows an example in which the set of protrusions 27 and recesses 28 is set to three of eight relaxation torque receiving surfaces 26 in total. FIG. 26B (d) shows an example in which four sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of convex strips 27 and concave strips 28. FIG. 26B (e) shows an example in which the set of protrusions 27 and recesses 28 is set to five of eight relaxation torque receiving surfaces 26 in total. FIG. 26B (f) shows an example in which the set of protrusions 27 and recesses 28 is set to six of a total of eight relaxation torque receiving surfaces 26. FIG. 26C (g) shows an example in which the set of protrusions 27 and recesses 28 is set to seven of the eight relaxing torque receiving surfaces 26 in total. FIG. 26C (h) shows an example in which all the eight relaxation torque receiving surfaces 26 are set as the installation targets of the one set of convex strips 27 and concave strips 28.

  In addition, as shown in FIG. 26A (b), an example in which the set of protrusions 27 and recesses 28 is set to two of eight relaxation torque receiving surfaces 26 in total is shown in FIG. Examples shown in (A) to (c) of 27A are also conceivable. As shown in FIG. 26A (c), an example in which the set of projections 27 and recesses 28 is set to three of the eight relaxation torque receiving surfaces 26 in total is shown in FIG. The example shown in (d) is also conceivable. As shown in (d) of FIG. 26B, an example in which the set of protrusions 27 and recesses 28 is set to four of a total of eight relaxing torque receiving surfaces 26 as shown in FIG. The example shown in (e) is also conceivable. As shown in FIG. 26B (f), an example in which six sets of the eight relaxing torque receiving surfaces 26 are set as the installation targets of the one set of protrusions 27 and recesses 28 in FIG. The example shown in (f) is also conceivable.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, the shape of the said convex strip part 27 and the concave strip part 28 is arbitrary, and each installation position of the convex strip part 27 and the concave strip part 28 with respect to the relaxation torque receiving surface 26 is arbitrary. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the ridges 27 and the ridges 28.

  (19) In FIGS. 28A, 28B, and 28C, in the order of at least one inner end edge 26a to outer end edge 26b of the plurality of relaxation torque receiving surfaces 26, the concave strip portion 28, the convex strip portion 27, and the concave portion The example which has arrange | positioned the strip part 28 and the convex strip part 27 is shown. In addition, the concave stripe part 28 and the convex stripe part 27 close | similar to the inner edge 26a are made into one set, and the remaining concave part 28 and the convex stripe part 27 far from the inner edge 26a are made into one set. This example is included in the technical idea described in claim 8.

  Specifically, FIG. 28A (a) shows an example in which the two sets of concave stripe portions 28 and convex stripe portions 27 are set as one of a total of eight relaxation torque receiving surfaces 26. ing. FIG. 28A (b) shows an example in which the two sets of the concave stripe portions 28 and the convex stripe portions 27 are set to two adjacent ones of the total eight relaxing torque receiving surfaces 26. . FIG. 28A (c) shows an example in which the two sets of the concave ridge portions 28 and the convex ridge portions 27 are set to two every other one of the eight relaxing torque receiving surfaces 26 in total. ing. FIG. 28B (d) shows an example in which the two sets of the concave stripe portion 28 and the convex stripe portion 27 are set to two every two of the total eight relaxing torque receiving surfaces 26. ing. FIG. 28B (e) shows an example in which the two sets of the concave stripe portions 28 and the convex stripe portions 27 are set to two of every three of the total eight relaxing torque receiving surfaces 26. ing.

  Further, FIG. 28C (f) shows an example in which the two sets of concave ridges 28 and ridges 27 are set to three of eight relaxing torque receiving surfaces 26 in total. FIG. 28C (g) shows an example in which the two sets of concave stripe portions 28 and convex stripe portions 27 are set to four of a total of eight relaxation torque receiving surfaces 26. FIG. 28C (h) shows an example in which the two sets of concave stripe portions 28 and convex stripe portions 27 are set to six of the eight relaxing torque receiving surfaces 26 in total.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  Although not shown in FIGS. 28A, 28B, and 28C, the number of the loose torque receiving surfaces 26 on which the two sets of concave portions 28 and convex portions 27 are to be installed is increased by one in the counterclockwise direction. It is also possible to make it.

  Moreover, the shape of the said groove part 28 and the convex part 27 is arbitrary, and each installation position of the concave part 28 and the convex part 27 with respect to the relaxation torque receiving surface 26 is arbitrary. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the concave portion 28 and the convex portion 27.

  (20) In FIGS. 29A, B, C and FIGS. 30A, 30B, at least one tightening torque receiving surface 25 out of the plurality of recesses 24 is provided with one convex strip 27 and the same recess as described above. In the relaxation torque receiving surface 26 of the portion 24, an example is shown in which the concave strip portion 28, the convex strip portion 27, and the concave strip portion 28 are provided in order from the inner end edge 26a to the outer end edge 26b. In addition, one protruding strip portion 27 of the tightening torque receiving surface 25 and a concave strip portion 28 near the inner end edge 26a of the relaxing torque receiving surface 26 are set as one set, and the remaining portions installed on the relaxing torque receiving surface 26 are set. The ridge portion 27 and the ridge portion 28 are set as one set. This example is included in the technical idea described in claim 5.

  As shown to (a) of FIG. 29A, the installation object of the said 2 sets of convex stripe part 27 and the concave stripe part 28 is made into any one hollow part 24, (b) of FIG. 29A, (c), and FIG. 29B , C, it is conceivable to increase the number of depressions 24 to be provided with the two sets of convex strips 27 and concave strips 28 one by one in the counterclockwise direction.

  Specifically, FIG. 29A (a) shows an example in which the installation target of the two sets of ridges 27 and ridges 28 is one of eight depressions 24 in total. . FIG. 29A (b) shows an example in which the two sets of the convex strips 27 and the concave strips 28 are set to two of a total of eight depressions 24. FIG. 29A (c) shows an example in which the two sets of the protruding ridge portions 27 and the recessed ridge portions 28 are set to three of the eight recessed portions 24 in total. FIG. 29B (d) shows an example in which the two sets of the protruding ridges 27 and the recessed ridges 28 are set to four of the total number of the depressions 24. FIG. 29B (e) shows an example in which the two sets of the ridges 27 and the ridges 28 are set to five of the eight depressions 24 in total. FIG. 29B (f) shows an example in which the two sets of protruding ridge portions 27 and recessed ridge portions 28 are set to six of the total number of the recessed portions 24. FIG. 29C (g) shows an example in which the two sets of the convex strips 27 and the concave strips 28 are set to seven out of a total of eight recesses 24. FIG. 29C (h) shows an example in which the two sets of protruding ridge portions 27 and recessed ridge portions 28 are set to all the eight recessed portions 24 in total.

  In addition, as shown in FIG. 29A (b), for an example in which the two sets of the protruding ridges 27 and the recessed ridges 28 are set to two of the total number of the depressions 24, as shown in FIG. The example shown in (a) is also conceivable. As shown in (c) of FIG. 29A, an example in which the two sets of the protrusions 27 and the recesses 28 are set to three of the total number of the depressions 24 is shown in FIG. The example shown in FIG. As shown in (d) of FIG. 29B, for an example in which the two sets of the ridges 27 and the ridges 28 are set to four of the total number of the depressions 24, (c) of FIG. ) And (f) are also conceivable. As shown in (e) of FIG. 29B, for an example in which the two sets of protrusions 27 and recesses 28 are set to five of the total number of depressions 24, FIG. 30B (d). The example shown in FIG. As shown in (f) of FIG. 29B, for an example in which the two sets of protrusions 27 and recesses 28 are set to six of the total number of depressions 24, FIG. The example shown in FIG.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, the shape of the said groove part 28 and the protruding item | line part 27 is arbitrary, and each installation position of the groove part 28 and the protruding item | line part 27 is arbitrary. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the concave portion 28 and the convex portion 27.

  (21) In FIG. 31A, B, C and FIGS. 32A, B, C, the convex strip portion 27 and the concave strip portion 28 on the tightening torque receiving surface 25 of at least one of the concave portions 24. Are provided one by one, and two concave portions 28 and one convex portion 27 are provided on the relaxation torque receiving surface 26 of the same recess 24 as described above. In this illustrated example, the concave strip portion 28 is disposed near the inner end edge 25 a on the tightening torque receiving surface 25, and the convex strip portion 27 is disposed near the outer end edge 25 b of the tightening torque receiving surface 25. Further, on the relaxation torque receiving surface 26, the concave stripe portion 28, the convex stripe portion 27, and the concave stripe portion 28 are arranged from the inner end edge 26a toward the outer end edge 26b. This example is included in the technical idea described in claim 9.

  As shown to (a) of FIG. 31A, the installation object of the said 2 protruding item | line part 27 and the said three recessed item | line part 28 is made into any one hollow part 24, (b), (c) of FIG. As shown in FIGS. 31B and 31C, it is conceivable to increase the number of the recessed portions 24 to be installed by the two projecting ridge portions 27 and the three recessed ridge portions 28 one by one in the counterclockwise direction.

  Specifically, FIG. 31A (a) shows an example in which the installation target of the two ridges 27 and the three ridges 28 is one of a total of eight depressions 24. ing. FIG. 31A (b) shows an example in which the two projections 27 and the three recesses 28 are set to two of a total of eight depressions 24. FIG. 31A (c) shows an example in which the two projections 27 and the three recesses 28 are set to three of eight depressions 24 in total. FIG. 31B (d) shows an example in which the two protrusions 27 and the three recesses 28 are set to four of the total number of depressions 24. FIG. 31B (e) shows an example in which the two ridges 27 and the three ridges 28 are set to five of the eight depressions 24 in total. FIG. 31B (f) shows an example in which the two ridges 27 and the three dents 28 are set to six of the total number of the depressions 24. FIG. 31C (g) shows an example in which the two projections 27 and the three recesses 28 are set to seven of the eight depressions 24 in total. FIG. 31C (h) shows an example in which the two ridges 27 and the three dents 28 are set to all the depressions 24 in total.

  In addition, as shown in FIG. 31A (b), an example in which the two ridges 27 and the three ridges 28 are set to two of a total of eight depressions 24 is shown in FIG. An example shown in (A) of 32A is also conceivable. As shown in (c) of FIG. 31A, the example in which the two ridges 27 and the three dents 28 are set to three of the total number of the depressions 24 as shown in FIG. The example shown in (b) is also conceivable. As shown in (d) of FIG. 31B, the example in which the two ridges 27 and the three dents 28 are set to four of the total number of the depressions 24 as shown in FIG. Examples shown in (c) and (g) of FIG. 32C are also conceivable. As shown in FIG. 31B (e), an example in which the two projections 27 and the three recesses 28 are set to five of the total number of depressions 24 is as shown in FIG. 32B. The example shown in (d) is also conceivable. As shown in FIG. 31B (f), the example in which the two projections 27 and the three recesses 28 are set to six of the total number of depressions 24 is as shown in FIG. Examples shown in (e) and (f) of FIG. 32C are also conceivable.

  Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  In addition, the shape of the said groove part 28 and the protruding item | line part 27 is arbitrary, and each installation position of the groove part 28 and the protruding item | line part 27 is arbitrary. Therefore, the number of unique fastening kits 1 can be further increased by variously changing the shapes and installation positions of the concave portion 28 and the convex portion 27.

  (22) In the above embodiment, the shape of each of the tightening torque receiving surfaces 25 of the male screw 2 and the shape of each of the tightening torque receiving surfaces 45 of the female screw 4 can be, for example, bulged surfaces.

  For example, in FIG. 33, a ridge that has a shape bulging in the direction opposite to the input direction of the tightening torque 100 is provided in the entire region from the inner end edge to the outer end edge of each of the tightening torque receiving surfaces 25 of the male screw 2. An example is shown.

  In this embodiment, the tightening torque receiving surface 25 made of the convex portion is a partially arcuate curved surface, and its curvature radius is arbitrarily set. For example, a complex curved surface in which a large number of arcs are connected. Alternatively, it may be a polygonal compound surface.

  In this way, when the tightening torque receiving surface 25 made of the ridge portion is a partially arcuate curved surface, the maximum protrusion of the ridge portion is the full length range from the inner end edge 25a to the outer end edge 25b. It is arranged at the center position. However, the position of the maximum protrusion is not limited to the above description. Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  (23) In the above embodiment, the shaft 23 of the male screw 2 or the shaft of the female screw 4 is arranged in the radial direction of each of the tightening torque receiving surfaces 25 of the male screw 2 and in the middle of each of the tightening torque receiving surfaces 45 of the female screw 4. It is possible to provide a ridge along the direction parallel to the center 43.

  For example, FIG. 34 and FIG. 35 show an example in which one ridge 27 is provided in the radial direction of each of the tightening torque receiving surfaces 25 of the male screw 2.

  The convex portion 27 means a convex portion provided along the entire region in the direction parallel to the axis 23 of the male screw 2 on the tightening torque receiving surface 25. The ridge portion 27 in this example has a V shape that becomes narrower toward the tip in a plan view. As shown in FIG. 23, the width of the ridge 27 is constant along the direction parallel to the axis 23 of the male screw 2. For example, as shown in FIG. You may make it increase gradually toward the front of the fitting direction (the screw shaft 21 side of the male screw 2). 35 and 36, the vertical direction of the paper surface is a direction parallel to the axis 23 of the male screw 2, and the lower side of the paper surface is the front in the fitting direction of the socket 3 (the screw shaft 21 side of the male screw 2). And Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  (24) In the above embodiment, the predetermined region of each of the relaxation torque receiving surfaces 26 of the male screw 2 and the predetermined region of each of the relaxing torque receiving surfaces 46 of the female screw 4 are parallel to the shaft center 23 of the male screw 2 or the shaft center 43 of the female screw 4. It is possible to provide a ridge along the various directions.

  For example, FIG. 37 shows an example in which one ridge 27 is provided in a predetermined region of each of the relaxation torque receiving surfaces 26 of the male screw 2.

  The convex portion 27 means a convex portion provided along the entire region in the direction parallel to the axis 23 of the male screw 2 on the tightening torque receiving surface 25. The protruding portion 27 in this example has a U-shape that becomes narrower toward the tip in plan view. Although not shown, the width of the ridge 27 is constant along the direction parallel to the axis 23 of the male screw 2, but the front of the socket 3 in the fitting direction (of the male screw 2). It may be gradually increased toward the screw shaft 21 side. Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  (25) In the above embodiment, the case where all of the tightening torque receiving surfaces 25 of the male screw 2 and all of the tightening torque receiving surfaces 45 of the female screw 4 are formed into unique shapes for each fastening kit 1 is taken as an example. However, the present invention is not limited to this.

  For example, at least one of all the tightening torque receiving surfaces 25 of the male screw 2 and at least one of all the tightening torque receiving surfaces 25 of the female screw 4 are made to have a unique shape for each fastening kit 1 (each of the above embodiments). Any one of the shapes shown in FIG.

  For example, in FIG. 38, the entire area of one of all the tightening torque receiving surfaces 25 of the male screw 2 has the same shape as that of FIG. 33, that is, a shape that bulges in the direction opposite to the input direction of the tightening torque 100. In this example, the other ridge portion is a flat surface that matches the plane including the axis 23 of the male screw 2. Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  (26) In the above embodiment, the case where all of the tightening torque receiving surfaces 25 of the male screw 2 and all of the tightening torque receiving surfaces 45 of the female screw 4 are formed into unique shapes for each fastening kit 1 is taken as an example. However, the present invention is not limited to this.

  For example, the total number of the recessed portions 24 of the male screw 2 and the recessed portions 44 of the female screw 4 is an even number, and the tightening torque receivers positioned at every other tightening torque receiving surface 25, 45 of each of the recessed portions 24, 44. The surfaces 25 and 45 can have a unique shape for each fastening kit 1 (any one of the shapes shown in the above embodiments).

  For example, in FIG. 39, the entire area of the tightening torque receiving surface 25 located at every other tightening torque receiving surface 25 of the male screw 2 is formed in the same shape as in FIG. In this example, the protruding ridges are shaped to bulge in the direction opposite to the input direction, and the other tightening torque receiving surface 25 is a flat surface matching the plane including the axis 23 of the male screw 2. Needless to say, the shape of the hole 32 of the socket 3 combined with the male screw 2 having such a shape is a shape that fits in a state of matching with the male screw 2.

  The present invention can be suitably used for a fastening kit including at least one of a male screw with a head and a female screw and a socket that is a dedicated tool that can be used only for the screw.

1 Fastening kit 2 Male thread
21 Screw shaft
22 Head (equivalent to tool fitting part)
23 Axial shaft center
24 depression
25 Tightening torque receiving surface
25a Inner edge
25b Outer edge
26 Relaxing torque bearing surface
26a Inner edge
26b Outer edge 3 Socket
31 torso
32 holes
33 Socket axis
34 Overhang
35 Tightening torque transmission surface
35a Inner edge
35b outer edge
36 Relaxation torque transmission surface
36a Inner edge
36b Outer edge 4 Female thread
41 Body (equivalent to tool fitting part)
42 Screw holes
43 Axial shaft of female thread
44 depression
45 Tightening torque receiving surface
45a Inner edge
45b outer edge
46 Relaxing torque bearing surface
46a Inner edge
46b outer edge

Claims (9)

A fastening kit including at least one of a male screw with a head and a female screw, and a socket that is a dedicated tool usable only for the screw,
The screw has a tool fitting portion that fits in a direction along the hole of the socket and the axis of the screw, and in the circumferential direction of the outer peripheral surface of the tool fitting portion, There is a recess that is recessed toward the axis,
Each of the recesses is parallel to the axial center of the screw and receives a tightening torque received from the socket and a tightening torque receiving surface receiving the relaxing torque input from the socket. Have
All of the tightening torque receiving surfaces are flat surfaces that coincide with a plane including the axis of the screw,
All of the relaxation torque receiving surfaces are bulging surfaces whose outer end edges are separated from the flat surface more than inner end edges and bulge from the inner end edge toward the outer end edge,
At least one of at least one of the tightening torque receiving surface and the relaxation torque receiving surface is provided with at least one ridge extending along the entire region in a direction parallel to the axis of the screw, The fastening kit according to claim 1, wherein at least one concave portion along the entire region in a direction parallel to the axis of the screw is provided. The fastening kit according to claim 1,
The ridge portion has a width smaller than the length from the inner end edge to the outer end edge of the tightening torque receiving surface or the relaxation torque receiving surface to be installed, and from the inner end edge to the outer end. The fastening kit characterized by being arrange | positioned in the arbitrary positions of the range to an edge. The fastening kit according to claim 1,
The fastening kit according to claim 1, wherein the protruding portion is provided on at least one of the plurality of tightening torque receiving surfaces in a whole radial direction of the tightening torque receiving surface. The fastening kit according to any one of claims 1 to 3,
The concave portion has a width smaller than the length from the inner end edge to the outer end edge of the tightening torque receiving surface or the relaxation torque receiving surface to be installed, and from the inner end edge to the outer end. The fastening kit characterized by being arrange | positioned in the arbitrary positions of the range to an edge. The fastening kit according to claim 1,
At least one of the plurality of tightening torque receiving surfaces is provided with at least one protrusion, and at least one of the plurality of relaxation torque receiving surfaces has at least the recess. One fastening kit is provided. The fastening kit according to claim 1,
At least one of the plurality of tightening torque receiving surfaces is provided with at least one concave portion, and at least one of the plurality of relaxation torque receiving surfaces has at least the convex portion. One fastening kit is provided. The fastening kit according to claim 1,
At least one of the plurality of tightening torque receiving surfaces is provided with at least one of the ridges and the ridges. The fastening kit according to claim 1,
The fastening kit according to claim 1, wherein at least one of the plurality of relaxation torque receiving surfaces is provided with at least one of the protrusions and the recesses. The fastening kit according to claim 1,
At least one of the plurality of tightening torque receiving surfaces is provided with at least one of the ridges and the recesses,
At least one of the plurality of relaxation torque receiving surfaces is provided with at least one ridge and at least one concave ridge.

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