JP2022007260A - Engaging tool - Google Patents

Abstract

To provide a simply composed and excellently operable engaging tool by which an article carried in close contact with a part of a user's body can be easily detachably held even by fumbling, and by which no engagement is unpreparedly released by vibration and external force.SOLUTION: The engaging tool is composed of a nearly wholly columnar male hook 10 that is provided with a peripheral groove between a roughly disk-like head part and a completely round disk-like bottom part, and a nearly wholly cylindrical female hook 20 that has on top an engaging hole for mooring the bottom part of the male hook. In a central position of the bottom part, there is a permanent magnet m1 and, in a central position of the completely round disk of an internal bottom face of the female hook, there is a permanent magnet m2 respectively. By the attraction between the permanent magnets, the central position of the bottom part moves to a position that is coaxial with the central position of the completely round disk, where the male hook is engaged with the female hook, which is the characteristic of the tool.SELECTED DRAWING: Figure 12

Description

The present invention relates to an engaging tool used for engaging an article with another article, and more specifically, for example, a pass case containing a regular ticket for public transportation can be attached to and detached from a shoulder belt of a land cell or the like. Engagement tool for detachably engaging an article at a position in close contact with the body, such as an engagement tool for engaging, an engagement tool for detachably engaging a portable information terminal device, a tool, etc. with a waist belt, etc. Regarding.

Conventionally, an engaging tool such as a push hook has been used for engaging a lid that can be opened and closed for personal items such as a wallet, a bag, and a bag with the main body. A general push hook consists of a pair of male and female hooks, and the protrusions of the male hooks are fitted and engaged into the engagement holes of the female hooks so that the protrusions are fixed to the engagement holes by a predetermined holding force. It is a structure, and when an external force exceeding the holding force is applied when opening the lid, the engagement is released. In other words, if an external force is applied to the engaged push hook without the user of personal belongings noticing it, the engagement may be unintentionally released and the lid may be inadvertently opened. In the case of wallets, bags, bags, etc., the lid is frequently opened and closed, and the user is relatively easy to notice the careless opening. Ease of fitting / releasing was prioritized, and in that respect, there was no particular problem even with the conventional push hook.

On the other hand, as an item that requires an engaging tool that does not inadvertently disengage due to external force while ensuring the ease of engagement / disengagement as much as possible, for example, a child who stores a commuter pass for public transportation. There is a pass case for. For children, taking the pass case in and out of their belongings at each ticket gate causes loss, so attach a string-shaped strap to the pass case and attach a belt or handle of belongings such as school bags and bags, or a belt for children's clothes. In many cases, measures such as connecting to are taken. However, although this can prevent loss, it does not solve the trouble of taking the pass case itself in and out of your belongings. To solve this problem, it is desirable that the pass case connected by a strap can be easily attached to and detached from the shoulder belt of the school bag by a simple configuration, excellent operability, and a durable engaging tool.

Here, since the shoulder belt of the school cell is located on both shoulders of the child, as long as the pass case is engaged with either the left or right shoulder belt, the child can attach / detach the engaging tool with only one hand on the opposite side. You need to be able to operate. In addition, since the shoulder belt is located just below the child's eyes and looking down from diagonally above, it can be easily engaged by simply touching the pass case to the shoulder belt with one hand when engaging, and even when disengaging. It is desirable to be able to disengage with a minimum of simple movements with one hand. Further, considering the use of a child with a lot of movement, it is desirable that the engagement is not easily disengaged unless a predetermined disengagement operation is performed.

The above circumstances also apply to applications such as portable information terminal devices such as smartphones and handy terminals, or articles such as work tools that are detachably attached to the waist belt with an engaging tool. In these cases as well, the engaging tool is located in a part that is in close contact with the body, and the user usually attaches / detaches the article in the form of a half-groping with one hand, so that it can be easily engaged / disengaged and disengaged. There is a demand for an engaging tool that prevents the article from falling off due to careless disengagement due to body movement, vibration, contact with the outside, or the like.

As an alternative to the push hook, as an engaging tool having a simple structure, excellent operability, and excellent durability, a prior art as disclosed in Patent Document 1, for example, has been proposed. In this prior art, when a male hook equipped with a permanent magnet and a female hook are brought into contact with each other out of phase, the male hook moves to a predetermined engagement position with respect to the female hook by magnetic force, and the engagement is completed. , When disengaging, the reverse operation is performed.

The engaging tool according to Patent Document 1 is provided with a holding hole 19 having an opening size smaller than the outer diameter of the outer diameter of the tip peripheral portion of the leading portion 5A of the male hook 5 in the female hole 13 of the female hook 7. The female hook 7 is configured to be engaged when the rear peripheral portion 8A (shaft) of the protruding edge portion 8 of the male hook 5 is inside the holding hole 19. When engaging both male and female hooks, the engagement is performed simply by inserting the ridge portion 8 of the male hook 7 into the female hole 13.
Japanese Unexamined Patent Publication No. 2017-12723

However, since the head portion 5A of the male hook 5 is in a state where it can move horizontally inside the female hook 7, when the head portion 5A accidentally moves to a position where it overlaps the female hole 13 due to vibration or an external force. There is a possibility that the head portion 5A may come off from the female hole 13 and be inadvertently disengaged. Further, at the time of engagement, the head portion 5A must be inserted into the female hole 13 so that the male hook 5 and the female hole 13 are exactly coaxial with each other. This is not a problem if the user can operate the engagement tool from the front, such as a lid such as a bag, but when applied to the engagement tool of a child's pass case, for example, the child is in the middle with one hand. Assuming that the pass case is engaged with the shoulder belt of the school bag in a state close to groping, there arises a problem that the difficulty level becomes high.

Further, the engaging tool according to Patent Document 1 has a configuration in which the head portion 5A of the male hook 5 is rotatable inside the female hook 7. When applied to a lid such as a bag, the lid cannot rotate significantly with respect to the main body of the bag, etc., and the male hook 5 always faces the female hook 7 in the same direction, so that the engaging tool is released. In this case, it is only necessary to assume an operation of moving the male hook 5 from the holding hole 19 toward the center of the female hole 13 in one direction. This "one-way" means that, for example, when the female hook 7 is arranged so that the holding hole 19 is on the upper side, the female hook 7 is in the downward direction.

However, when the engaging tool applied to the pass case engaged with the shoulder belt of the school bag is applied, the pass case can rotate freely. Therefore, when a child removes the pass case from the shoulder belt of the school bag by groping in the middle, not only remove the pass case by pulling it up from the bottom, but also pull it down from the top to the bottom. Although it may be removed, the engaging tool according to Patent Document 1 can be disengaged only from above to below, which causes a problem that the degree of freedom of operation is limited.

Further, when the female hook itself is installed on the surface of a bag or the like, as described in Patent Document 1, if the female hook itself is fixed to the screw by using a set screw 12, the angle does not change arbitrarily, but the school bag It is not realistic to screw it to the shoulder belt. Therefore, the female hook is attached to the shoulder belt using a fixed belt as an accessory, but in that case, if the angle of the female hook changes, it is still difficult to attach and detach the pass case by groping. Occurs.

The above-mentioned problems of the prior art are not only when the pass case is attached to the shoulder belt of the land cell as an engaging tool, but also when the smartphone or mobile information terminal is attached to the waist belt of clothes. It also occurs when it is used as an ingredient. That is, the engagement tool according to the prior art is suitable for an article such as a bag lid, which allows the user to face the engagement tool to some extent when opening and closing, and can visually perform the engagement and disengagement operations. However, it is not always suitable for articles that need to be held in close contact with a part of the user's body and attached / detached by fumbling.

The present invention has been created to solve the above problems of the prior art, and can easily and detachably hold an article to be carried in close contact with a part of the user's body even by groping. An object of the present invention is to provide an engaging tool having a simple configuration and excellent operability so that the engagement is not inadvertently released by vibration or external force.

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a substantially cylindrical male hook having a circumferential groove between a substantially disk-shaped head and a perfect circular disk-shaped bottom. In an engaging tool composed of a substantially cylindrical female hook having an engaging hole for engaging the bottom of the male hook on the upper surface, the engaging hole has a major axis slightly larger than the diameter of the bottom. An ellipse whose minor axis is smaller than the diameter of the bottom and a perfect circle whose diameter is smaller than the diameter of the bottom are overlapped by shifting the center of the perfect circle from the center of the ellipse in the minor axis direction. A first permanent magnet is provided at the center position of the bottom portion, and a second permanent magnet is provided at the center position of the perfect circle on the inner bottom surface of the female hook. Is passed through the major axis of the ellipse of the engaging hole, and the peripheral edge of the engaging hole is fitted into the peripheral groove to engage the bottom portion into the engaging hole. When it comes into contact with the inner bottom surface, the attractive force between the first and second permanent magnets moves the center position of the bottom portion to a position coaxial with the center position of the perfect circle, and the male hook is at this position. Is an engaging tool characterized by being engaged with the female hook.

According to this configuration, if the male hook is tilted with respect to the female hook and the bottom portion thereof is inserted toward the elliptical side of the engaging hole, the bottom portion passes through the elliptical long diameter portion of the engaging hole and remains as it is. The bottom portion abuts on the inner bottom surface of the female hook due to the attractive force between the second permanent magnets, and further moves in parallel to the position coaxial with the perfect circle of the engagement hole to complete the engagement. That is, the user does not have to accurately align the bottom of the male hook with the engagement hole of the female hook so that the peripheral groove of the male hook is simply brought into contact with the peripheral edge of the engagement hole on the elliptical side. Only by the action of the attractive force between the first and second permanent magnets, the female hook is semi-automatically engaged, so that the engagement can be easily performed even by groping.

In addition, the male hook in the state of being engaged with the female hook can move horizontally along the axial direction connecting the ellipse of the engagement hole and the center of the perfect circle inside the female hook. Since the peripheral groove is always in a state where some part of the peripheral edge of the engaging hole is always meshed on either the elliptical side or the perfect circular side, the bottom of the male hook is pulled out from the engaging hole as it is. It never happens and is not inadvertently disengaged.

On the other hand, since the major axis of the elliptical portion of the engaging hole corresponds to the diameter of the bottom of the male hook, the male hook is moved upward when the center of the bottom of the male hook coincides with the center of the elliptical portion of the engaging hole. Alternatively, the bottom of the male hook can be removed from the engagement hole only when tilted toward either downward. That is, the engaging tool in the engaged state is not disengaged by simply sliding the male hook, and the male hook is slid to the elliptical side of the engaging hole to the full and the perfect circle side is slanted. It can be released only when it is lifted and when the male hook is lifted on the elliptical side when the peripheral groove and the peripheral edge on the elliptical side are disengaged by sliding it toward the perfect circle.

The invention according to claim 2 is the engaging tool according to claim 1, wherein a first tapered surface inclined upward is provided on the peripheral edge of the bottom of the male hook, and the inside of the upper peripheral edge of the engaging hole. It is characterized in that a second tapered surface that inclines downward toward the surface is provided.

By providing the first tapered surface, even if the height of the internal space of the female hook is small, the male hook can be easily tilted with the bottom surface of the male hook in contact with the inner bottom surface of the female hook. As a result, the height of the female hook, that is, the thickness can be compressed, and the engaging tool can be made compact. On the other hand, by providing the second tapered surface, when the outer edge of the bottom surface of the male hook comes into contact with the upper surface of the peripheral edge of the engaging hole of the female hook, the first tapered surface on the male hook side is on the female hook side. Since the second tapered surfaces face each other, the male hook can be smoothly engaged with the female hook, and the engagement operation becomes easier.

If both tapered surfaces are not provided, the bottom surface of the male hook and the peripheral edge of the engaging hole of the female hook both exhibit a cross section corresponding to the respective thickness, so that the thickness of the cross section of the bottom surface is relevant. It is possible to engage in the engagement hole only after completely passing through the thickness of the cross section of the joint hole. However, by providing both tapered surfaces, the thickness of the bottom surface and the peripheral edge of the engaging hole can be reduced. As long as the edges intersect each other, the bottom can immediately enter the interior of the engagement hole. That is, due to the presence of both tapered surfaces, the margin (clearance) of the mutual positional relationship in which the bottom surface and the engaging hole can be engaged becomes large, and the engaging operation becomes easier.

Further, the bottom surface of the male hook can pass through the engagement hole only in the elliptical major axis portion constituting the engagement hole of the female hook, but since the major axis portion of the engagement hole is naturally curved, the male hook The passable range narrows according to the thickness of the bottom surface of the, and the difficulty of the engagement operation increases. However, if the thickness of the bottom surface is reduced by providing the first tapered surface, the margin (clearance) is expanded in the passable range in the long diameter portion, so that the engagement operation is also easier.

The invention according to claim 3 is the engaging tool according to claim 1 or 2, wherein the head of the male hook is provided with a protrusion protruding outward in the radial direction. It is characterized by that.

The protrusion serves as a mounting portion for attaching an article such as a pass case to the male hook by a strap or the like, and also serves as an action point provided at a position where the tip thereof is away from the center of the head of the male hook. .. When the user holds and moves the article by hand, the force is transmitted to the male hook through the point of action, so that the engagement operation by tilting the male hook becomes easier.

The invention according to claim 4 is the engaging tool according to any one of claims 1 to 3, wherein the female hook includes a substantially rectangular substrate on the bottom surface side thereof, and the substrate is the same. It is characterized by providing a pair of recesses facing each other at both ends in the major axis direction of the hole.

Since the bottom area of the female hook with the substrate on the bottom side expands, the stability of the female hook is ensured even when the male hook is tilted up or down to attach or detach the engaging tool, and the female hook can be engaged. The release operation becomes smooth. Further, when the female hook is attached to the shoulder belt or the like of the land cell by the fixing belt, the fixing belt is held by the pair of facing recesses to prevent the female hook from tilting, and the axis of the engagement hole and the shoulder belt Since the direction is maintained, the operation of engaging and disengaging the engaging tool becomes smooth.

According to the engaging tool according to the present invention, even when the female hook is attached to a position close to the body and difficult for the user to see, the male hook can be attached and detached by a simple fumbling operation. In addition, the male hook in the engaged state is not disengaged by simply sliding it, and the male hook is pushed upward along the axis of the engaging hole and then pulled diagonally upward, or the male hook is pulled diagonally upward by 180 °. Since the engagement can be disengaged only when either the operation of rotating it upward and then pulling it diagonally downward is performed, it is possible to prevent the engaged article from being inadvertently dropped due to vibration or external force.

Front view showing a pass case to which the engaging tool according to the embodiment is applied. Right side view showing a pass case to which the engaging tool according to the embodiment is applied. A rear view showing a pass case to which the engaging tool according to the embodiment is applied. Top view of the engagement tool Side view of the engagement tool Floor plan of male hook Cross section of male hook Floor plan of female hook Cross section of female hook Schematic showing the shape of the engagement hole and the bottom of the male hook The figure which shows the state which changed the position of the bottom of the male hook engaged in the engagement hole. Cross-sectional view and plan view showing the engaging procedure of the engaging tool step by step Cross-sectional view and plan view showing the procedure for releasing the engaging tool step by step (released upward) Cross-sectional view and plan view showing the engaging procedure of the engaging tool step by step (released downward)

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view showing a state in which the engaging tool 1 according to the embodiment of the present invention is applied to the pass case P, FIG. 2 is a right side view, and FIG. 3 is a rear view. The engaging tool 1 is composed of a male hook 10 and a female hook 20, and is provided on either the left or right side of the shoulder belt (not shown) of the school bag by the fixing belt B attached to the substrate 22 provided on the back surface of the female hook 20. It is attached to. Further, the male hook 10 is connected to the pass case P by a strap S1 passed through a strap hole 15 provided in the protrusion 14 protruding downward from the head 11 of the figure. A child who is a user can grasp and operate the pass case P by hand to bring the male hook 10 into contact with the female hook 20 and hang it, or disengage and remove the male hook 10. The strap S2 in the figure is a string body for preventing loss of the separated pass case P, and is not a configuration of the present invention itself.

4 is a plan view of the engaging tool 1 in the engaged state, FIG. 5 is a side view of the same, FIG. 6 is a plan view of the male hook 10 alone, and FIG. 7 is a cross-sectional view of the same. The male hook 10 has a substantially cylindrical shape as a whole, and a circumferential groove 13 that goes around the outer circumference is provided between the substantially disk-shaped head 11 and the round disk-shaped bottom 12 having a diameter slightly smaller than the head 11. ing. A first tapered surface t1 inclined upward is provided on the peripheral edge of the lower surface of the bottom portion 12, and a third tapered surface t3 inclined toward the peripheral groove is provided on the peripheral edge of the lower surface of the head portion 11. Further, the head portion 11 is provided with a protrusion 14 so as to project downward in FIG. 1, and the protrusion 14 is provided with a strap hole 15 penetrating the protrusion 14. Further, the bottom portion 12 has a first permanent magnet m1 embedded in the bottom portion 12 so as to be coaxial with the substantially cylindrical axis of the male hook 10. The taper angles of the first tapered surface t1 and the second tapered surface t2 are appropriately set based on the relationship between the height of the male hook 10 and the height of the internal space of the female hook 20 described later.

FIG. 8 is a plan view of the female hook 20 alone, and FIG. 9 is a cross-sectional view of the same. The male hook 10 has a substantially cylindrical shape as a whole, has an engaging hole 21 on the upper surface for engaging the bottom portion 12 of the male hook 10, and has an internal space 23 between the male hook 10 and the inner bottom surface 22. The height of the internal space 23 from the inner bottom surface 22 to the lower surface of the engaging hole 21 is slightly larger than the thickness from the lower end of the peripheral groove 13 of the male hook 10 to the bottom surface of the bottom portion 12. A second permanent magnet m2 is embedded immediately below the inner bottom surface 22 at a position described later.

The permanent magnets m1 and m2 are attached from the bottom 12 side of the male hook 10 and from the inner bottom surface 22 side of the female hook 20, respectively, so that the exposed surfaces of the permanent magnets m1 and m2 are in direct contact with each other. However, in the present embodiment, the permanent magnet m1 is inserted from the head 11 side of the male hook 10 and the permanent magnet m2 is inserted from the bottom surface side of the female hook 20 and installed with the bottom portion 12 or the inner bottom surface 22. A very thin partition wall that does not hinder the mutual attraction between the permanent magnets m1 and m2 is provided between them. In the case of the former mounting method, there is a risk that both the permanent magnets m1 and m2 will be pulled out from the mounting location due to the repeated action of the attractive force due to the magnetic force during the continuous use of the engaging tool 1. However, in the case of the configuration of the present embodiment, since the partition wall is interposed, there is no risk of removal, and the durability can be improved.

FIG. 10 is a schematic view showing the shape of the engaging hole 21 and the bottom portion 12 of the male hook 10. In the figure, p1 indicates the center of the bottom portion 12 of the male hook 10, and 13a is the peripheral groove 13 of the female hook 20. Indicates the position of the groove bottom. The engagement hole 21 has a shape in which a horizontally long ellipse E and a perfect circle C are overlapped in the drawing. The center p2 of the ellipse is the center point of the line segment connecting the two focal points of the ellipse E, and the major axis of the ellipse E is 17.5 mm through which the diameter of the bottom 12 of the male hook 10 can pass, and the minor axis is 16.3 mm. There is. On the other hand, the perfect circle C is a circle having a diameter of 15 mm with the center as p3, and the center p3 of the perfect circle is positioned 1.5 mm in the minor axis direction from the center p2 of the ellipse. The permanent magnet m2 is embedded directly below the inner bottom surface 22 of the female hook 20 so as to be coaxial with the center p3 of the perfect circle. The numerical value (unit: mm) in FIG. 10 indicates a suitable dimension when the diameter of the bottom 12 of the male hook 10 is 17 mm, but is not necessarily limited to this dimension, and the entire engaging tool 1 is not limited to this dimension. It can be set arbitrarily according to the size.

Next, FIG. 11 shows a state in which the position of the bottom portion 12 of the male hook 10 engaged in the engaging hole 21 is changed. FIG. 11A in FIG. 11 shows a state in which the male hook 10 is moved to the upper end of the ellipse E, and the groove bottom 13a of the peripheral groove 13 meshes with the peripheral edge of the upper end of the engagement hole 21. At this time, the center of the bottom portion 12 is shown. p1 is located above the center p2 of the ellipse E on the axis. In FIG. B, the bottom 12 of the male hook 10 engaged in the engagement hole 21 is attracted by the attractive force acting between the permanent magnets m1 and m2 and moves along the axis in the internal space 23 of the female hook 20. A state in which the center p1 of the bottom portion 12 and the center p3 of the perfect circle C overlap with each other substantially coaxially, and at the same time, the peripheral bottom 13a meshes with the lower end of the engagement hole 21 on the peripheral edge, and the engagement tool 1 is completely engaged. Is shown.

When engaging the male hook 10 and the female hook 20, as shown in FIGS. 12 (1) to (4), the male hook 10 is slightly tilted and the upper part of the bottom portion 12 is the engaging hole of the female hook 20. Engage in the ellipse E portion of 21 (1), engage the upper part of the peripheral groove 13 with the peripheral edge of the upper part of the ellipse E portion (2), and bring the bottom portion 12 into close contact with the inner bottom surface 22 of the female hook 20 (3). .. Then, the bottom portion 12 slides in the internal space 23 of the female hook 20 due to the attractive force of the permanent magnets m1 and m2, and the center p1 of the bottom portion 12 and the center p3 of the perfect circle C of the engagement hole 21 overlap each other, and the peripheral groove 13 The lower part of the circle C meshes with the peripheral edge of the lower part of the perfect circle C, and the engagement is completed.

By forming the engagement hole 21 in such a shape, when the male hook 10 is engaged with the female hook 20, the bottom portion 12 of the male hook 10 and the female hook 20 are located regardless of where the male hook 10 is located on the axis. A portion L is formed in which a part of the peripheral edge of the engaging hole 21 overlaps, and the two are always in a meshed state. Therefore, the bottom portion 12 of the male hook 10 does not come off from the engaging hole 21 as it is, and carelessly. Will not be disengaged.

In the engaging hole 21, as shown in the embodiment, the ellipse E and the perfect circle C are not only overlapped by shifting their centers p2 and p3, but also the ellipse E and the perfect circle C are formed. May be connected by tangents (not shown) provided on both sides. With such a configuration, the overlapping portion L shown in FIG. 11B can be slightly reduced. Therefore, in particular, the operation when the engaging tool 1 is disengaged by the first disengaging method described later can be performed. Not only can it be smoothed, but also the shape of the engagement hole 21 eliminates the edge shape that occurs at the intersection of the ellipse E and the perfect circle C, so that it is possible to prevent the shape change due to wear caused by contact with the male hook 10 during operation. Therefore, the durability of the engaging tool 1 can be further improved.

When disengaging the male hook 10 and the female hook 20, there are two possible disengagement methods at the user's discretion. First, the first disengagement method is a method of gripping the pass case P in a state of being attached to the engaging tool 1 and hanging downward, and disengaging as it is, which is the procedure shown in FIG. That is, when the male hook 10 in the engaged state (1) is pushed up until the peripheral groove 13 meshes with the upper peripheral edge of the ellipse E portion of the engaging hole 21, the center p1 of the bottom portion 12 overlaps with the center p2 of the ellipse E. The lower part of the bottom 12 can pass through the ellipse E (2), and when the male hook 10 is pulled diagonally downward while pulling up the lower part of the bottom 12 (3), the bottom 12 is disengaged from the engagement hole 21 and engaged. It will be released (4).

On the other hand, the second disengagement method is a method of rotating the engaged pass case P with the engaging tool 1 to disengage the engagement upward, which is the procedure shown in FIG. First, the pass case P attached to the engaging tool 1 is rotated upward by 180 degrees (1). As a result, the male hook 10 is in an engaged state with the protrusion 14 to which the pass case P is attached facing upward by rotation, but the upper portion of the bottom portion 12 of the male hook 10 meshes with the upper peripheral portion of the engaging hole 21. Not (2). Then, when the pass case P is pulled forward, the upper portion of the bottom portion 12 of the male hook 10 is raised diagonally forward. At this time, the lower portion of the bottom portion 12 is in a state of meshing with the lower portion of the peripheral edge of the perfect circle C of the engagement hole 21, but since the lower surface of the bottom portion 12 is provided with the first taper t1, the bottom portion 12 is inclined. Is pulled out while sliding upward, and the meshing is released (3). Then, by pulling down the pass case P diagonally downward as it is, the bottom portion 12 is disengaged from the engaging hole 21 and the engagement is released (4).

Comparing the two disengagement methods, the first disengagement method can normally grip the article hanging below the engaging tool 1 as it is and disengage it, but after pushing the male hook 10 upward, it can be disengaged. Requires the operation of pulling forward. On the other hand, in the second disengagement method, it is necessary to once rotate the article above the engaging tool 1, but after that, the disengagement can be disengaged by simply pulling the article diagonally downward and forward. According to the engaging tool 1 according to the present embodiment, the disengagement can be smoothly performed by any method, but in the case of an article having a certain size or weight such as a mobile information terminal, the former disengagement method is preferable. In the case of a small and light article such as the pass case P of the embodiment, the latter release method is more suitable.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not necessarily limited to the above-described configuration, and the present invention is appropriately used as long as the object of the present invention is achieved and the effect is obtained. Modifications are possible and they belong to the technical scope of the invention as long as they fall within the technical scope of the invention.

The engaging tool according to the present invention can be used for all personal belongings that need to be carried and used frequently and quickly, and in particular, a position where an article such as a pass case, a wallet, or a personal digital assistant is in close contact with the body. It is highly convenient in applications where it can be quickly attached and detached by fumbling with one hand. Therefore, not only the engagement tools for children's pass cases, but also the portable engagement tools for smartphones and key holders, and the portable engagement tools for mobile information terminals such as handy terminals used by customer service staff in restaurants and workers in warehouses. Furthermore, it has a possibility of being used in a wide range of industrial fields such as portable engaging tools such as tools used by civil engineering and construction workers.

P Pass case B Mounting belt S1 Strap (for mounting articles)
S2 strap (for loss prevention)
E Ellipse C Round p1 Center of bottom p2 Center of ellipse p3 Center of perfect circle 1 Engagement tool 10 Male hook 11 Head 12 Bottom 13 Circumferential groove 13a Circumferential groove bottom 14 Protrusion 15 Strap hole 20 Female hook 21 Engagement hole 22 Bottom plate 23 Internal space m1 Magnet (male hook)
m2 magnet (female hook)
t1 taper (male hook)
t2 taper (female hook)
t3 taper (male hook)

Claims (5)

The upper surface is provided with an overall substantially cylindrical male hook having a circumferential groove between a substantially disk-shaped head and a perfect circular disk-shaped bottom, and an engaging hole for engaging the bottom of the male hook. In an engaging tool consisting of a female hook that is substantially cylindrical,
The engaging hole has an ellipse having a major axis slightly larger than the diameter of the bottom and a minor axis smaller than the diameter of the bottom, and a perfect circle having a diameter smaller than the diameter of the bottom. The shape is such that the ellipse is offset from the center of the elliptical shape in the minor axis direction and overlapped.
A first permanent magnet is provided at the center position of the bottom portion, and a second permanent magnet is provided at the center position of the perfect circle on the inner bottom surface of the female hook.
With the male hook tilted, the bottom portion is passed through the elliptical major axis of the engagement hole, and the peripheral edge of the engagement hole is fitted into the peripheral groove to engage the bottom portion into the engagement hole. Then, when the bottom portion is brought into contact with the inner bottom surface of the female hook, the center position of the bottom portion becomes coaxial with the center position of the perfect circle due to the attractive force between the first and second permanent magnets. An engaging tool characterized by moving to and engaging the male hook with the female hook at this position. The bottom peripheral edge of the male hook is provided with a first tapered surface that is inclined upward, and the upper peripheral edge of the engaging hole is provided with a second tapered surface that is inclined downward inward. The engaging tool according to claim 1. The engaging tool according to claim 1 or 2, wherein the head of the male hook is provided with a protrusion protruding outward in the radial direction. Claims 1 to 3 are characterized in that the female hook is provided with a substantially rectangular substrate on the bottom surface side thereof, and the substrate is provided with recesses facing each other at both ends in the major axis direction of the engagement hole. Engagement tool described in any of. A pass case comprising the engaging tool according to any one of claims 1 to 4.

Images