JP7326040B2 - engagement tool - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engaging tool that is used for, for example, a bag and that engages between a front portion to be fastened and an engaged portion.

2. Description of the Related Art Conventionally, as an engaging tool used in a bag or the like, for example, as shown in Patent Document 1, an attracting part formed by a permanent magnet is provided at the center of engagement on one side of the engaging tool, and the other side is provided with an attracting part. An attracted portion formed by a permanent magnet that attracts the attracting portion is also provided at the engagement center, and mutual attraction between the attracted portion and the attracting portion allows the engaging portion and the engaged portion to be aligned reliably and in a positionable manner. An engaging tool has been proposed that enables engagement between the two.

Japanese Patent No. 3849113

However, the engaging tool described in Patent Document 1 has a problem that the engagement between the engaging portion and the engaged portion is likely to be released by a small external force. Furthermore, since it is necessary to provide a permanent magnet, there is also the problem that the cost of parts increases and the manufacturing process becomes complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an engaging tool that has a simple structure, can reduce the cost of parts, and is excellent in operability. is.

In order to solve the above problems, an engaging tool of the present invention is an engaging tool that engages a male hook with an internal space of a female hook to engage the male hook and the female hook with each other, wherein the male hook is , The whole is composed of a substantially protruding strip, and the outer periphery of the head part, which has a substantially cylindrical shape, is formed so as to protrude outward in the radial direction from the rear peripheral part, and the upper surface of the female hook communicates with the internal space. , an insertion hole, a holding hole, and a connecting hole are provided. The holding hole has an opening diameter smaller than that of the insertion hole. The insertion hole and the holding hole are connected to each other by the connecting hole. When the width of the hole is D2, the outer diameter of the leading portion is D3, and the outer diameter of the rear peripheral portion is D4, the following relational expression (1) holds,
D4<D2<D3<D1 (1)
A retaining ring having an annular shape excluding an opening is disposed in the internal space at a position corresponding to the retaining hole, and the retaining ring is disposed so that the opening faces the insertion hole,
By inserting the leading end portion into the internal space through the insertion hole and moving the male hook to the position of the holding hole, the movement of the leading end portion in the axial direction in which the rear peripheral portion extends is regulated so that the male hook is inserted into the female hook. The male and female hooks are disengaged by engaging the hooks, moving the leading portion in the internal space from the position of the holding hole to the position of the insertion hole, and removing it from the insertion hole, and into the internal space. When the inserted leading portion is moved to the position of the holding hole, the leading portion is axially abutted and clamped by the retaining ring and the inner surface of the internal space, thereby allowing the leading portion to be inserted axially and through the holding hole. It is characterized in that movement in the direction towards the hole is restricted.

In the engaging tool of the present invention, the retaining ring has a circular shape in plan view excluding the opening portion, and the retaining ring in the initial state where no external force is applied has an opening width D5 of the opening portion and a projection portion in plan view. It is preferable that the inner diameter D6 of the edge portion and the outer diameter D7 of the annular portion satisfy the following relational expression (2).
D5<D4≤D6<D2<D7 (2)

In the engaging tool of the present invention, the retaining ring allows the rear peripheral portion to be pushed in while enlarging the diameter of the opening, and when the rear peripheral portion is housed inside the retaining ring, the opening is initially closed. It is preferred to have flexibility that is recoverable to the caliber of the state.

In the engagement tool of the present invention, the retaining ring preferably comprises polyacetal.

According to the present invention, it is possible to provide an engaging tool that has a simple configuration, can hold down the cost of parts, and is excellent in operability.

1 is a perspective view showing an external configuration of a bag using an engaging tool according to an embodiment of the present invention; FIG. FIG. 2 is a perspective view showing a state in which a folding lid of the bag shown in FIG. 1 is partially opened; 3 is an enlarged view of part A of FIG. 2; FIG. It is a perspective view which shows the structure of a male hook and a female hook in embodiment of this invention. Fig. 3 is an exploded perspective view showing how the male hook is attached to the bag according to the embodiment of the present invention; Fig. 4 is an exploded perspective view showing how the female hook is attached to the bag according to the embodiment of the present invention; (a), (b), and (c) are perspective views showing configurations of a male hook, a female hook, and a retaining ring, respectively, in the embodiment of the present invention. (a) shows the state before the male hook is engaged into the female hook, and (b) shows the state where the male hook is engaged into the internal space. (a) shows the state before the male hook is engaged in the female hook, (b) shows the state in which the male hook is engaged in the internal space, and (c) is the male hook in the state of (b). is moved to the position of the holding hole of the female hook.

Hereinafter, an engaging tool according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the external configuration of a bag 10 using the engaging tool of the present embodiment, and FIG. 2 is a perspective view showing a partially opened state of the folding lid 12 of the bag 10 shown in FIG. 3 is an enlarged view of part A in FIG. FIG. 4 is a perspective view showing the configuration of the male hook 20 and the female hook 30, FIG. 5 is an exploded perspective view showing how the male hook 20 is attached to the bag 10, and FIG. It is an exploded perspective view showing an attached state. 7(a), (b), and (c) are perspective views showing configurations of the male hook 20, the female hook 30, and the retaining ring 40, respectively. 8(a) and 8(b) are cross-sectional views taken along line BB' of FIG. (b) is a diagram showing a state in which the male hook 20 is engaged into the internal space 35. FIG. 9(a), (b), and (c) are cross-sectional views along the CC' line in FIG. 4, and (a) is before engaging the male hook 20 into the female hook 30 (b) shows the state in which the male hook 20 is engaged in the internal space 35, and (c) shows the male hook 20 in the state of (b) moved to the position of the holding hole 33 of the female hook 30. FIG. 10 is a diagram showing a state in which the 8(a) and 9(a) are views showing the state before the male hook 20 is engaged in the female hook 30 as seen from different directions, and FIGS. 8(b) and 9(b) are views of the female It is the figure which looked at the state which engaged the male hook 20 in the hook 30 from the different direction.

1 to 9, for example, in the bag 10 shown in FIG. 1 and FIG. It is formed by arranging a female hook 30 on the surface of the front piece 13 (see FIGS. 2 and 3).

As shown in FIG. 3 or FIG. 4, the male hook 20 is made of a substantially convex strip as a whole, and the leading end portion 23 and the base end portion 21 are substantially cylindrical or substantially disk-shaped. 22 are connected. The base end portion 21, the rear peripheral portion 22, and the front portion 23 are provided with the axis AX as a common central axis, and the front portion 23 has an outer peripheral portion radially extending from the axial rear peripheral portion 22. It is formed so as to protrude outward (see FIG. 4).
Note that the shape of the leading portion 23 may be any shape other than circular in plan view along the axial direction as long as the outer peripheral portion or the outer edge portion of the front portion 23 protrudes radially outward from the rear peripheral portion 22 . can also

As shown in FIG. 5 , the male hook 20 has a set screw 25 provided on the outer engaging surface member 12B of the two engaging surface members 12A and 12B that constitute the folding lid 12, and a washer 24. The set screw 25 is screwed into a threaded hole (not shown) provided in the proximal end 21 , and is screwed into the inner engaging surface member 12 A of the folding lid 12 . A hook 20 is attached (see FIGS. 8 and 9). As a result, the male hook 20 is positioned inside the folding lid 12 with the front portion 23 exposed (see FIG. 2).
The two engaging face members 12A and 12B are sewn together to form the folding lid 12. As shown in FIG.

As shown in FIG. 2 or 3, the female hook 30 has a base body 31 with a substantially elliptical outer shape when the front piece 13 is viewed from the front. ), the leading portion 23 of the male hook 20 can be engaged in the direction of arrow D in FIGS.
The outer shape of the base 31 of the female hook 30 is not limited to the substantially elliptical shape, and may be circular or angular, for example.

As shown in FIG. 6, the base body 31 of the female hook 30 consists of four plate members 51 provided on the outer engaging surface member 13A of the two engaging surface members 13A and 13B forming the front piece 13. It is fixed to one round hole 53 by riveting or screws (not shown). Two leg portions 51a and 51b extend from the plate member 51. These leg portions 51a and 51b are passed through the engaging surface member 13A, respectively, and fixed plates are provided on the inner engaging surface member 13B. The substrate 31 is fixed to the front piece 13 by inserting it through the two mounting holes 52a and 52b of 52 and bending it along the plane direction (FIGS. 8A, 8B, 9A-- (c)). Here, the two engaging face members 13A and 13B are stitched together to form the front piece 13. As shown in FIG.

As shown in FIG. 4, the upper surface 31a of the base 31 of the female hook 30 has an opening width smaller than the inner diameter of the insertion hole 32 above the insertion hole 32 (Z1 direction in FIGS. 2 and 4). A holding hole 33 is provided, and the insertion hole 32 and the holding hole 33 are connected to each other by a connecting hole 34 . That is, on the upper surface 31a of the base 31, an insertion hole 32, a connecting hole 34, and a holding hole 33 are formed continuously from the lower side (Z2 direction in FIGS. 2 and 4) to the upper side. to the inner space 35 of the . The internal space 35 is formed so as to be surrounded by the inner surface of the base 31 and the plate member 51 (see FIGS. 8(a) and 9(a)). The insertion hole 32 has a substantially circular shape in plan view along the thickness direction of the female hook 30, except for the connecting hole 34 leading to the holding hole 33. As shown in FIG. On the other hand, the holding hole 33 is elongated and extends upward from the insertion hole 32 .
The insertion hole 32 may have a planar shape other than the substantially circular shape as long as the leading end portion 23 can be inserted therein.

As shown in FIG. 6, a retaining ring 40 is arranged at a mounting position 36 inside the base 31 and surrounding the retaining hole 33 . As shown in FIG. 7(c), the retaining ring 40 has an annular portion 41 that is circular except for an opening 44 in plan view along the thickness direction. A projecting edge portion 47 along the outer edge extends downward in the thickness direction from the lower surface of the annular portion 41 . A tongue piece 42 extending further downward along the thickness direction and having a predetermined width is formed in the projecting edge portion 47 at a position facing the opening portion 44 in plan view.

As shown in FIG. 6, when the tongue piece 42 is press-fitted into the engagement hole 51c of the plate material 51, the tongue piece 42 has a predetermined width and is arranged on the plate material 51 in a predetermined direction. Further, when the substrate 31 is attached to the plate member 51 to which the retaining ring 40 is fixed, the retaining ring 40 is arranged at the attachment position 36 within the substrate 31 . At this time, the retaining ring 40 is arranged so that the opening 44 faces the insertion hole 32 side, the top surface 45 of which contacts the inner surface of the base 31, and the bottom surface 46 of the projecting edge 47 contacts the plate material 51 ( 8 and 9). In addition, in a plan view of the retaining ring 40 along the thickness direction of the female hook 30 and the retaining ring 40, the center of the circle, which is the planar shape of the retaining ring 40, is positioned on the center line of the retaining hole 33 of the female hook 30 in the width direction. are arranged to
The planar shape of the retaining ring 40 is not limited to a circular shape, and may be an elliptical shape similar to the retaining hole 33 of the female hook 30, a rectangular shape, or the like. Also, the thickness of the retaining ring 40 is set equal to or smaller than the depth of the internal space 35 of the female hook 30 .

When the female hook 30 and the retaining ring 40 are fixed to the plate member 51, an internal space 35 is formed between the female hook 30 and the plate member 51 as shown in FIGS. 8(a) and 9(a). In addition, a housing space 48 surrounded by the inside of the retaining ring 40 and the plate material 51 is formed in the internal space 35 . Here, as shown in FIG. 7(c), since the protruded edge portion 47 of the retaining ring 40 has a larger inner diameter than the opening of the annular portion 41 in the upper surface 45, the inner surface of the housing space 48 has a step. is formed. Since this step corresponds to the shape of the radial step between the rear peripheral portion 22 and the leading portion 23 of the male hook 20, when the leading portion 23 is accommodated in the accommodation space 48, the leading portion 23 is moved into the accommodation space. It abuts on the inner surface of 48 . Therefore, movement of the male hook 20 in the direction of the central axis AX common to the rear circumferential portion 22 and the leading portion 23 is restricted.

The retaining ring 40 is made of a material having durability against contact with the male hook 20 engaged in the internal space 35 of the female hook 30 and having flexibility to allow the diameter of the annular portion 41 to expand. Constructed of synthetic resin. Examples of such flexible synthetic resins include polyacetal, polyamide, polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyimide, and fluorine resin. On the other hand, the male hook 20 and the female hook 30 are rigid from the viewpoint of durability against engagement of the male hook 20 into the internal space 35 and movement of the male hook 20 within the internal space 35, aesthetic appearance, and the like. is preferably made of a metal material having

The inner peripheral surface of the annular portion 41 of the retaining ring 40 is provided with two notch portions 43 that do not reach the outer peripheral surface. By providing the notch 43 in the retaining ring 40 and constructing it with a flexible material, the diameter of the opening 44 can be expanded by applying an external force, and when the external force is removed, the external force is applied. It can be restored to the previous initial state caliber.
The number, shape, and position of the cutouts 43 can be arbitrarily determined in consideration of the elasticity of the material used for the retaining ring 40, the shape of the rear peripheral portion 22 of the male hook 20, and the like. The notch portion 43 can be provided on either the inner peripheral surface or the outer peripheral surface of the annular portion 41 .

Regarding each part of the male hook 20 and the female hook 30, the following relational expression (1) holds.
D4<D2<D3<D1 (1)
Here, the inner diameter of the insertion hole 32 is D1, the width of the holding hole 33 and the connecting hole 34 is D2, the outer diameter of the front portion 23 is D3, and the outer diameter of the rear peripheral portion 22 is D4. The inner diameter of the insertion hole 32 is the diameter in the width direction (X1-X2 direction in FIGS. 2 and 4), and the width (opening diameter) of the holding hole 33 is the length in the width direction.
When the insertion hole 32 has a shape other than a substantially circular shape, the above D1 is preferably the minimum opening width.

Furthermore, the following relational expression (2) holds for the retaining ring 40 and each portion of the male hook 20 and the female hook 30 .
D5<D4≤D6<D2<D7 (2)
Here, in an initial state in which no external force is applied to the retaining ring 40, in plan view along the thickness direction of the retaining ring 40, the opening width of the opening 44 is D5, and the inner diameter of the projecting edge portion 47 of the retaining ring 40 is D5. is D6, and the outer diameter of the annular portion 41 is D7.

8(a) and 9(a), the front end portion 23 faces the insertion hole 32, and the central axis AX between the rear peripheral portion 22 and the front end portion 23 is aligned. The male hook 20 is engaged into the female hook 30 along the direction (see FIGS. 8(a), (b), and FIGS. 9(a)-(c)). The leading end portion 23 engaged into the internal space 35 stops at a position where the leading end face contacts the surface of the plate material 51 as shown in FIGS. 8(b) and 9(b). When the male hook 20 is moved from this state to the position of the holding hole 33, the leading end portion 23 is engaged in the housing space 48 of the holding ring 40, and the male hook 20 and the female hook 30 are engaged. (state shown in FIG. 9(c)).

When releasing the engagement between the male hook 20 and the female hook 30, the male hook 20 at the position of the holding hole 33 is moved toward the insertion hole 32, and the male hook 20 is pulled out from the insertion hole 32 along the direction of the central axis AX. An operation to pull out the hook 20 is performed.

Since each portion of the male hook 20 and the female hook 30 is formed so that the above relational expression (1) holds, the leading end portion 23 of the male hook 20 can be engaged into the internal space 35 only from the insertion hole 32, After engagement, the male hook 20 can move from the insertion hole 32 to the holding hole 33 . When the male hook 20 is moved to the position of the holding hole 33, the front portion 23 abuts against the base 31 of the female hook 30 in the axial direction along the central axis AX along which the rear peripheral portion 22 extends, so movement is restricted. , the male hook 20 and the female hook 30 are kept engaged with each other.

In the bag 10, the top portion 23 of the male hook 20 is engaged from the insertion hole 32 located on the lower side (Z2 side in FIGS. 1 and 2), and the folding lid 12 provided with the male hook 20 is pushed upward (see FIG. 1). , Z1 side in FIG. 2), or by lowering the front piece 13 side by its own weight, the male hook 20 moves to the position of the holding hole 33 of the female hook 30, and the male hook 20 is inside the internal space 35 Movement is restricted, and the male hook 20 cannot be separated from the female hook 30 only by lifting the folding lid 12, so the closed state is reliably maintained.

On the other hand, by moving the male hook 20 downward (Z2 side in FIGS. 1 and 2) until it reaches the position of the insertion hole 32, the leading portion 23 in the internal space 35 is moved to the female hook 30. By taking it out from the insertion hole 32, the male hook 20 and the female hook 30 can be easily disengaged from each other.

Further, the shape of each part of the male hook 20, the female hook 30, and the retaining ring 40 is set so that the relational expression (2) is satisfied, and the retaining ring 40 is formed of a flexible material. The peripheral portion 22 is pushed into the annular portion 41 while enlarging the diameter of the opening 44 . movement is restricted. In addition, due to the stepped structure of the annular portion 41 and the projecting edge portion 47, the leading portion 23 abuts against the inner wall of the retaining ring 40, is sandwiched by this, and is held in the housing space 48, so that the leading portion 23 is centered on the central axis. Movement in the direction along AX and in the direction from the holding hole 33 to the insertion hole 32 is also restricted.

On the other hand, when the user of the bag 10 applies a force greater than a predetermined force to move the male hook 20 from the holding hole 33 to the insertion hole 32 side, the rear peripheral portion 22 causes the opening 44 to expand in diameter. The male hook 20 can be moved to the insertion hole 32 side, and the engagement between the male hook 20 and the female hook 30 can be released by pulling out the head portion 23 from the insertion hole 32 .
Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the above embodiments, and can be improved or changed within the scope of the purpose of improvement or the spirit of the present invention.

INDUSTRIAL APPLICABILITY As described above, the engaging tool according to the present invention is useful in that it has a simple configuration, can reduce the cost of parts, and is excellent in operability.

10 Bag 11 Opening 12 Fold-back lids 12A, 12B Engaging surface material 13 Front piece 13A, 13B Engaging surface material 20 Male hook 21 Base end 22 Rear peripheral part 23 Leading part 24 Washer 25 Set screw 30 Female hook 31 Base 32 Insertion hole 33 Holding hole 34 Connecting hole 35 Interior space 36 Mounting position 40 Holding ring 41 Annular part 42 Tongue piece 43 Notch 44 Opening 45 Top surface 46 Bottom surface 47 Rim part 48 Storage space 51 Plate material 52 Fixing plate 53 Round hole D1 Inside diameter of insertion hole D2 Width of holding hole D3 Outer diameter of front end D4 Outer diameter of rear circumference D5 Opening width of opening D6 Inner diameter of retaining ring D7 Outer diameter of retaining ring

Claims (3)

An engaging tool for engaging the male hook and the female hook by engaging the male hook in the internal space of the female hook,
The male hook is formed of a substantially convex strip as a whole, and is formed so that the outer peripheral portion of the front end portion having a substantially cylindrical shape protrudes outward in the radial direction from the rear peripheral portion,
The upper surface of the female hook is provided with an insertion hole, a holding hole, and a connecting hole that respectively communicate with the internal space, and the holding hole is set to have a smaller opening diameter than the insertion hole. the holding holes are connected to each other by the connecting holes;
When the inner diameter of the insertion hole is D1, the width of the holding hole is D2, the outer diameter of the leading portion is D3, and the outer diameter of the rear peripheral portion is D4, the following relational expression (1) holds,
D4<D2<D3<D1 (1)
A retaining ring having an annular shape excluding an opening is disposed in the internal space at a position corresponding to the retaining hole,
The retaining ring is arranged such that the opening faces the insertion hole,
A state in which movement of the leading portion in the axial direction in which the rear circumferential portion extends is restricted by inserting the leading portion into the internal space through the insertion hole and moving the male hook to the position of the holding hole. engaging the male hook with the female hook by
disengaging the male hook and the female hook by moving the leading portion in the internal space from the position of the holding hole to the position of the insertion hole and removing it from the insertion hole;
When the leading portion inserted into the internal space is moved to the position of the holding hole, the leading portion is abutted and held between the retaining ring and the inner surface of the internal space in the axial direction. restricts movement in the axial direction and in the direction from the holding hole toward the insertion hole ,
The retaining ring has an annular portion that is circular in plan view except for the opening, and a projecting edge extends along the outer extension from the lower surface of the annular portion,
In the retaining ring in the initial state where no external force is applied, the opening width D5 of the opening, the inner diameter D6 of the protruded edge, and the outer diameter D7 of the annular portion in plan view are represented by the following relational expression (2): An engaging tool characterized by satisfying
D5<D4≤D6<D2<D7 (2) The retaining ring allows the rear peripheral portion to be pushed in while enlarging the diameter of the opening, and when the rear peripheral portion is housed inside the retaining ring, the opening is in the initial state. 2. The engaging tool according to claim 1 , which has flexibility that can be recovered to a diameter of . 3. The engagement tool of claim 2, wherein said retaining ring comprises polyacetal .