WO2016103495A1

WO2016103495A1 - Fastening kit

Info

Publication number: WO2016103495A1
Application number: PCT/JP2014/084656
Authority: WO
Inventors: 允博荒谷; 浩人荒木; 加藤　剛; 優介小宮; 照宜小島
Original assignee: ユニファス株式会社
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2016-06-30
Also published as: WO2016103751A1; JPWO2016103751A1

Abstract

A fastening kit (1) that includes a screw (2) and a socket (3) which is a specialised tool. The screw (2) has a tool-fitting section (22). Recessed sections (24) which are recessed towards the axial centre (23) are provided in a plurality of places in the circumferential direction of the outer peripheral surface of the tool-fitting section (22). By forming at least one shape from among those of the recessed sections (24) into a unique shape that is different for each fastening kit (1), a third party who is different from the owner of the fastening kit (1) is prevented from detaching the screw (2).

Description

Fastening kit

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 and nut with improved crime prevention, and a socket that is a tool dedicated to the bolt and nut (see Patent Documents 1-3).

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

In addition, the said bolt and nut are provided with the recessed part which engages with those exclusive tools in several places of the circumference direction 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 bolts of Patent Document 1 and the nuts of Patent Document 2, it is preferable to sell the kit with the socket of Patent Document 3 attached. 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. The shape of the inner peripheral surface of the hole of the socket is the tool fitting portion of the screw, while the shape of at least one of the recess portions is a unique shape that differs for each fastening kit. It is characterized in that it has a shape that can be fitted only with.

The fastening kit according to the present invention can be of a type in which a male screw with a head and a socket are combined, a type in which a female screw and a socket are combined, and a type in which a male screw with a head, a female screw and a socket are combined.

The male screw with a head is also called a bolt with a head, and the female screw is also called a nut.

Furthermore, the socket is configured to have a hole that sinks from one end in the longitudinal direction to the middle in the longitudinal direction of a round bar-shaped body, for example. 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 recessed portion of the screw has a unique shape that is different for each fastening kit according to the present invention, and the socket that is used when tightening and loosening the screw is fitted only to the tool fitting portion of the screw. Therefore, when the fastening kit according to the present invention is mass-produced and sold, all the fastening kits are different from each other.

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 the purchased socket is used, the hole of the socket cannot be externally fitted to the tool fitting portion of the screw. Therefore, the screw cannot be loosened and removed.

In other words, when the screw is appropriately screwed to the site, the screw can be loosened and removed only with 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.

By the way, each of the recesses is parallel to the axial center of the screw and receives a tightening torque receiving surface that receives a tightening torque input from the socket, and a relaxing torque receiver that receives a relaxing torque input from the socket. It is preferable that at least one of the tightening torque receiving surface and the relaxation torque receiving surface is formed in a unique shape that is different for each fastening kit.

Here, by forming at least one of the tightening torque receiving surface and the relaxation torque receiving surface provided in the recessed portion into a unique shape different for each fastening kit, at least one of the recessed portions in the recessed portion is provided. It is clarified that the shape of the part is made to be a unique shape different for each fastening kit. Thereby, it is specified that the shape of the inner peripheral surface of the hole of the socket naturally corresponds to the shape of the outer peripheral surface of the tool fitting portion of the screw.

Further, 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 outer end edge that is flatter than an inner end edge. And at least one of the tightening torque receiving surface and the loosening torque receiving surface is provided on at least one of the tightening torque receiving surface and the loosening torque receiving surface. It can be set as the structure by which the protruding item | line part along a direction parallel to an axial center is provided.

In this configuration, a protrusion is provided on only one of the tightening torque receiving surface and the relaxation torque receiving surface, and at least one of the tightening torque receiving surface and the relaxation torque receiving surface. A form in which convex ridges are provided on all, and a form in which convex ridges are provided on every other surface in the circumferential direction when at least one of the tightening torque receiving surface and the relaxation torque receiving surface is an even number. Is supposed to include. The surface on which at least one of the tightening torque receiving surface and the relaxation torque receiving surface is not provided with the convex portion can be a flat surface that matches a plane including the axis of the screw. In this case, the tightening torque receiving surface includes a surface including the ridge portion and a flat surface not including the ridge portion.

Further, in the above configuration, since the protruding portion has a shape that can be processed relatively easily, it is possible to suppress an increase in manufacturing cost thereof. Moreover, in the said structure, since the individual difference for every fastening kit which concerns on this invention can be increased as much as possible, it becomes possible to increase the production number of the said fastening kit as much as possible.

Furthermore, in the said structure, it has specified that the relaxation torque receiving surface of each hollow part of the said screw is the bulging surface which inclined. According to this specification, as described below, the screw cannot be loosened and removed even if a tool other than the socket, such as a general pliers, is used.

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 may be provided along the entire region in a direction parallel to the axis of the screw in at least one of the tightening torque receiving surface and the relaxation torque receiving surface.

In addition, the width of the ridge can be made constant along a direction parallel to the axis of the screw, or can be gradually increased toward the front in the fitting direction of the socket. In the case where this ridge portion is adopted, the strength is improved, for example, it becomes difficult to deform when receiving a tightening torque from a socket or the like.

The protruding portion is provided on the tightening torque receiving surface, and is provided along the entire region in the direction parallel to the axis of the screw on the tightening torque receiving surface and the tightening torque receiving surface. It can be set as the structure made into the shape which bulges toward the outer edge from the inner edge of a surface.

Further, all of the relaxation torque receiving surfaces bulge from the inner end edge toward the outer end edge, and the outer end edge extends radially outward from the axis of the screw and passes through the inner end edge. A bulging surface separated from the extension line is formed, and at least one of the tightening torque receiving surfaces has a ridge and a groove along the entire region in a direction parallel to the axis of the screw arranged in the radial direction. The configuration 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 a perspective view which shows an external appearance in further another embodiment of the fastening kit which concerns on this invention. FIG. 10 is a plan view of the head of the male screw in FIG. 9. It is a side view of the external thread of FIG. 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 a side view of the external thread of FIG. 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. 16 from the front. In this figure, the lower side is the screw shaft side of the male screw. FIG. 18 is a modification of the ridge portion of FIG. 17 and is a view of only the tightening torque receiving surface as 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 a side view of the external thread of FIG. 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.

Hereinafter, the best mode for carrying out the present invention will be described in detail 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 places (eight places in the figure) in the circumferential direction in the upper corner of the outer peripheral surface of the head 22. In this embodiment, the plurality of depressions 24 are provided at equal intervals in the circumferential direction.

The recess 24 is provided so as to be recessed from the outer peripheral edge of the head 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 different unique shapes 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 of the tightening torque receiving surface 25 in a direction parallel to the axis 23 of the male screw 2. 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 portions of the concave and convex surface are arranged in the inner diameter side region, and the convex and concave portions of the concave and convex surface 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 narrower 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”.

2 is formed in the same outer shape as the head 22 of the male screw 2, and will be described in detail below.

This female screw 4 has a configuration in which a screw hole 42 is provided in an axial center 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, hollow portions 44 are provided at several places (eight places in the figure) in the circumferential direction on the upper corner 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 hollow 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 that are parallel to the axis 43 of the female screw 4.

The tightening torque receiving surface 45 is disposed on the side receiving the tightening torque 100 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.

And, the concave and convex portion of the concave and convex surface 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 portions of the concave and convex surface are disposed in the inner diameter side region, and the convex and concave portions of the concave and convex surface are disposed 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 narrower 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 the tightening operation and the loosening operation of only the male screw 2 and the female screw 4 only.

The socket 3 has a configuration in which a hole 32 is provided that is recessed from one end 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 direction along 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 is substantially circular, 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 that matches the recessed portion 24 of the external thread 2 and the recessed portion 44 of the internal thread 4 and makes surface contact. 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 overhanging 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.

And the concave and convex portion of the concave and convex surface means a concave portion provided along the entire region of the tightening torque transmitting surface 35 in the direction parallel to the axis 33 of the socket 3. 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 loosening torque input along with the loosening operation is input. 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 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, FIGS. 9 to 11 show convex ridges having a shape that bulges in the direction opposite to the input direction of the tightening torque 100 over the entire area from the inner end edge to the outer end edge of each tightening torque receiving surface 25 of the male screw 2. The example which provided the part 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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(2) 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 are combined curved surfaces, for example, for one cycle of a sine curve. Is possible.

For example, FIG. 12 and FIG. 13 show examples 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.

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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(3) 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 formed into, for example, a corrugated shape.

For example, FIG. 14 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.

In addition, the said recessed stripe 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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(4) In the embodiment described above, 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. 15 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.

In addition, the said groove 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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(5) In the above embodiment, the shaft 23 of the male screw 2 or the shaft of the female screw 4 is provided in the middle of the radial direction of each of the tightening torque receiving surfaces 25 of the male screw 2 and in the middle of the radial direction 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. 16 and FIG. 17 show an example in which one protrusion 27 is provided in the radial direction of each of the tightening torque receiving surfaces 25 of the male screw 2.

The ridge 27 means a ridge provided along the entire region of the tightening torque receiving surface 25 in a direction parallel to the axis 23 of the male screw 2. The ridge portion 27 in this example has a V shape that becomes narrower toward the tip in a plan view. And, as shown in FIG. 17, the width of the ridge portion 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). 17 and 18, the vertical direction of the paper surface is parallel to the axis 23 of the male screw 2, and the lower side of the paper surface is the front of the socket 3 in the fitting direction (the screw shaft 21 side of the male screw 2). And Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

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

For example, FIG. 19 and FIG. 20 show an example in which one protrusion 27 is provided in a predetermined region of each of the relaxation torque receiving surfaces 26 of the male screw 2.

The ridge 27 means a ridge provided along the entire region of the tightening torque receiving surface 25 in a direction parallel to the axis 23 of the male screw 2. 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. 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 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 have 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. 21, 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. 10, 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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(8) 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. 22, the entire area of the tightening torque receiving surface 25 located every other tightening torque receiving surface 25 of the male screw 2 is formed in the same shape as in FIG. 10, that is, the tightening torque 100. 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. Even in the case of such a configuration, the same operation and effect as the above embodiment can be obtained.

(9) In the above embodiment, the fastening kit 1 of the type in which the male screw 2 and the socket 3 are combined, and the fastening kit 1 of the type in which the female screw 4 and the socket 3 are combined 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.

(10) 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.

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

(12) In the above-described embodiment, it is possible to make one of the plurality of depressions 24 of the male screw 2 and the plurality of depressions 44 of the female screw 4 one by one or appropriately different shapes (see the respective embodiments). It is. 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.

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 this screw.

DESCRIPTION OF SYMBOLS 1 Fastening kit 2 Male screw 21 Screw shaft 22 Head (equivalent to a tool fitting part)
23 Axial center of male screw 24 Recessed portion 25 Tightening torque receiving surface 25a Inner end edge 25b Outer end edge 26 Relaxing torque receiving surface 26a Inner end edge 26b Outer end edge 3 Socket 31 Body 32 Hole 33 Socket shaft center 34 Overhang portion 35 Tightening torque transmission surface

35a Inner edge

35b Outer edge 36 Relaxing torque transmission surface

36a Inner edge

36b Outer edge 4 Female screw 41 Body (corresponding to tool fitting part)
42 Screw hole 43 Center of female thread 44 Recess 45 Retightening torque receiving surface 45a Inner edge 45b Outer edge 46 Relaxing torque receiving surface 46a Inner edge 46b Outer edge

Claims

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,
While at least one of the recesses has a unique shape that is different for each fastening kit, the shape of the inner peripheral surface of the socket hole can be fitted only with the tool fitting portion of the screw. Fastening kit characterized by having a unique shape.
The fastening kit according to claim 1,
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
A fastening kit, wherein at least one of the tightening torque receiving surface and the relaxation torque receiving surface is formed in a unique shape that is different for each fastening kit.
The fastening kit according to claim 2,
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,
A fastening kit, wherein at least one of at least one of the tightening torque receiving surface and the relaxation torque receiving surface is provided with a ridge portion along a direction parallel to the axis of the screw.
The fastening kit according to claim 3,
The fastening is characterized in that the protruding portion is provided along the entire region in a direction parallel to the axis of the screw in at least one of the tightening torque receiving surface and the relaxation torque receiving surface. kit.
The fastening kit according to claim 3,
The ridges are provided on the tightening torque receiving surface, and are provided along the entire region of the tightening torque receiving surface in a direction parallel to the axis of the screw, and on the tightening torque receiving surface. A fastening kit, characterized by having a shape that bulges from an inner edge toward an outer edge.
The fastening kit according to claim 2,
All of the relaxation torque receiving surfaces bulge from the inner end edge toward the outer end edge, and the outer end edge extends radially outward from the axis of the screw and passes through the inner end edge. The bulging surface separated from the
A fastening kit, wherein at least one of the tightening torque receiving surfaces is provided with a ridge portion and a ridge portion along the entire region in a direction parallel to the axial center of the screw arranged in the radial direction. .