KR830001068Y1 - Fastener - Google Patents

Abstract

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Description

Fastener

1 is a plan view showing the overall structure of the fastener of the present invention in a reduced size.

2 is a front view of the fastener of FIG.

3 is a plan view of a fastener according to the first embodiment of the present invention.

4 is a front view of the fastener of FIG. 3 showing a cross section of the socket;

Figure 5 is a perspective cross-sectional view showing the state of the fastener in which the insertion portion is inserted into the socket.

6 is a partial cross-sectional view showing a state in which the insertion portion is fixed to the socket.

FIG. 7 is a partial sectional view similar to FIG. 6 showing a state in which the insert fixed to the socket is pulled with great force.

FIG. 8 is a partial cross-sectional view similar to FIG. 6 showing a state where the insert fixed to the socket is pulled with a very large force.

9 is a plan view of a fastener according to a second embodiment of the present invention.

FIG. 10 is a front view of the fastener of FIG. 9 showing a cross section of the socket;

FIG. 11 is a sectional view showing a cross section of the insert taken along line 11 of FIG.

12 is a partial cross-sectional view showing a state in which the insertion portion is fixed to the socket.

FIG. 13 is a sectional view showing a partial deformation of the socket shown in FIG.

14 is a left side view of FIG. 15 in the fastener according to the third embodiment of the present invention.

15 is a front view of the insert.

16 is a plan view of a fastener according to a fourth embodiment of the present invention.

17 is a front view of the fastener of FIG. 16 showing a cross section of the socket;

18 is a partial cross-sectional view showing a state in which the insertion portion is fixed to the socket.

FIG. 19 is a sectional view showing a partial modification of the socket shown in FIG. 16 and FIG.

20 is a plan view of a fastener according to a fifth embodiment of the present invention.

FIG. 21 is a front view of the fastener of FIG. 20 showing a cross section of the socket;

Fig. 22 is a partial sectional view showing a state in which an insertion portion is fixed to a socket;

FIG. 23 is a left side view of FIG. 24 of the insert of the fastener according to the first modification of the present invention; FIG.

24 is a front view of the insert having three latches.

25 is a left side view of the insert of FIG. 26;

26 is a front view of the insert having four latches.

27 is a front view of the insert with stops including a vertical surface in accordance with a second embodiment of the present invention;

28 is a front view of the insert without support.

29 is a front view of the insert with neither the support nor the stop.

30 is a front view of the insert with a cylindrical portion on the front of the stop and an outer diameter gradually reduced toward the rear;

31 is a front view of an insert having a neck.

32 is a plan view of a fastener of a third modification according to the present invention.

FIG. 33 is a front view of the fastener of FIG. 32 showing a cross section of the socket;

34 is a plan view of a fastener according to a fourth modification of the present invention.

35 is a plan view showing a fastener assembly according to a fifth modified example of the present invention in which a plurality of fasteners of the first embodiment are connected to each other.

The invention relates to a fastener consisting of a socket with an insertion hole, an intermediate filament and an insert, wherein the insert can be inserted into the hole from any direction and can be fixed very firmly to the socket.

The fastener of the present invention has excellent elasticity and is preferably integrally formed from synthetic resins such as nylon and polypropylene. These fasteners attach tags or labels indicating the quality or price of the product, seal labels or covers of various sizes, connect and support at least two or more products such as slippers or sandals, or Used to close something like the bag's entrance.

In a conventional fastener of this type, the insert is inserted into a hole formed in the socket from only one predetermined direction and secured to the socket. When such a fastener is attached to the product by using the fastener, the operator should check in advance the direction of bending the fastener or filament in the form of a ring or inserting the insert into the hole of the socket according to the application position or purpose of the fastener. .

If the insert is to be inserted into the hole from a direction opposite to the intended insertion direction, it is impossible to fasten and fix the insert on the socket. Therefore, the fastening action becomes inconvenient and the working efficiency is lowered.

As a device for eliminating this defect, US Pat. No. 3,816,879 proposed a fastener that allows the insert to be inserted into a hole formed in the socket from either of two directions to facilitate the fastening action of a tag or the like. This fastener consists of a socket, a filament and an insert, in which one or two braking vanes extending longitudinally and laterally deflected are formed in the holes of the socket and the inner edge is formed behind the insert tip. do. When the tip is inserted into the hole, the brake blades deflect laterally and expand. As the tip passes through the vanes, the braking vanes return to their original position and the inner edge of the tip strikes towards the edge of the vane, preventing the insert from being released from the socket. The insert can be inserted from either of the two inlets of the hole.

In such fasteners, the vanes are formed on the inner side of the socket with a small cylindrical shape, and thus the formation or preparation of such fasteners is very difficult. Moreover, it is very difficult to obtain fasteners suitable for the above-mentioned applications since large sockets can hardly be prepared due to the complicated structure. In addition, when the insert is fixed in the hole, a gap is formed between the insert and the hole so that the insert cannot move or shake in the hole and cannot be firmly fixed to the socket. Thus, there is a risk of the insertion part coming off the socket.

The fastener of the present invention consists of a socket having an insertion hole and an insertion part which is inserted into and fixed in the hole, wherein the insertion part can be inserted into the hole from any direction, has an appropriate elasticity and when the insertion part is inserted into the hole At least one clasp that can be expanded radially about the axis of the insert without applying any force on the insert is formed on the insert, and the fixing surface is formed on the hole of the socket perpendicular to the axis of the hole, The brace contacts or engages with the stationary surface. When the insert is inserted into the hole of the socket, the brace contracts and can pass through the hole. When the brace passes completely through the hole, the brace returns to its original position and is in contact with the contact surface. Thus, even if the insert is pulled in the direction opposite to the inserting direction, it cannot be released from the socket.

Therefore, the main object of the present invention is to provide a fastener which can be inserted into a hole formed in the socket from any direction so that the insert can be securely fixed to the socket and the fastening action can be carried out very easily and quickly without any special force applied. will be.

Another object of the present invention is to provide a fastener which is very simple and compact in structure of a socket or insert, and thus is capable of mass production at low cost.

Another object of the present invention is to provide a fastener in which the force for coupling the insert to the socket is so strong that the once fixed insert can hardly be separated from the socket.

These and other objects, features, and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings.

1 and 2, the fastener 1 of the present invention is generally composed of a socket 2, an intermediate filament 3 and an insert 4, and by stretching It is formed elastically and integrally from synthetic resins such as nylon and polypropylene, which have increased strength. The fastener 1 is molded in the mold with the filaments thick and short, but typically the filaments are drawn by the mold itself or other drawing devices to form thin and long filaments. In elongated filaments, strength and elasticity are increased, and thus material costs can be reduced. If the product fastened or joined by the fastener is small or does not require particularly high bond strength, the filaments can be molded into the mold and used unstretched.

Example 1

A fastener according to a first embodiment of the present invention is shown in FIGS. 3 to 8. 3 and 4, the insert 6 of the fastener 5 has an enlarged head 7 at the top, two torches 8, a first connection 9 and a stop. It is composed of a portion 10, the second connecting portion 11 and the support portion 12. The insertion hole 14 extending in the direction perpendicular to the axial direction of the filament 3 is formed on the socket 13, the inner flange 15 is guide surface 15a coaxial with the axis of the hole 14, It has two engagement or contact surfaces 15b with an axis perpendicular to the axis of the hole 14. It is preferable to form the socket 13 so as to be symmetrical with respect to the plane including the axis of the filament 3 and perpendicular to the axis. The head 7 at the top of the insert 6 is generally conical and smaller than the inner diameter of the guide surface 15a, which is its maximum diameter, so that the insert 6 is inserted into the hole 14 and the guide surface 15a. This is facilitated. The two catches 8 are fixed to the rear end of the head 7. If no force is applied, the free end of each latch expands, and the distance between the two free ends is greater than the inner diameter of the guide surface 15a. The brace has adequate elasticity. The sum of the thicknesses of the two latches and the diameter of the first connecting portion 9 is smaller than the inner diameter of the guide surface 15a. The stop 10 preferably has a generally spherical shape, the diameter of which is smaller than the inner diameter of the hole 14 but larger than the inner diameter of the guide surface 15a. The support 12 is preferably formed in a spherical shape. Of course, the shape of the stop 10 and the support 12 is not limited to the spherical shape.

The function of each element of the fastener according to the present embodiment will be described.

For example, as shown in FIG. 5, the insertion part 6 passes through the hole of tag T, and the filament 3 bends and winds around a product. In other words, the insert 6 passes through the product or product package and through the hole of the tag T. Next, the head 7 is inserted into the guide surface 15a (for example in the direction of arrow A) on one side of the hole 14 of the socket 13. When the catch 8 passes completely through the guide surface 15a, the catch 8 returns to its original state as shown in FIG. 6 and the distance between both free ends of the catch 8 is larger than the diameter of the guide surface 15a. do. If the insert 6 is further inserted in the direction of arrow A, the stop 10 hits toward the end edge defined by the guide surface 15a and the contact surface 15b. Thus, the insert 6 is no longer inserted. In this way, the function which fixes the insertion part 6 to the socket 13 is completed. When the pulling force is applied in the direction opposite to the insertion direction (i.e., in the direction opposite to the arrow A direction), if the force is small, the latch 8 makes contact with the contact surface 15b and the insertion portion 6 is connected to the socket. Departure from (13) is prevented. If the pull force applied is quite large, as shown in FIGS. 7 and 8, the catch 8 is bent to contact the contact surface 15b and the insert 6 can be released from the socket 13. There will be no. Therefore, the insertion part 6 cannot be pulled out of the socket 13 unless the latch 8, the insertion part 6, the socket 13 or other part is damaged. Therefore, the coupling force obtained in such fasteners is quite large.

5 to 8, it will be readily understood that the insert 6 can be similarly inserted into the hole in the direction opposite to the direction, ie in the direction opposite to the arrow A direction.

Example 2

A fastener 16 according to a second embodiment is shown in FIGS. 9 to 13. 9 to 11, the hole 18 is formed inside the socket 17 and the inner flange 19 is the contact surface 19b and the guide surface 19a formed at the center of the circumferential surface of the hole 18. Has An annular projection 20 extending in the axial direction of the hole 18 is formed in each of the contact surfaces 19b. The inner circumferential surface of the protrusion 20 has the same diameter as the guide surface 19a and is coplanar. The space B is defined by each of the outer circumferential surfaces of the protrusions 20 as well as the inner and peripheral surfaces 19b of the holes 18. The insertion portion 21 includes an enlarged head 22, two latches 23, a first connection portion 24, a cylindrical portion 25, a stop portion 26, a second connection portion 27, and a support portion 28. Is made of. The first connecting portion includes a cylindrical surface 24a and a flat surface 24b, and the cylindrical surface 24a and the cylindrical portion 25 are adapted to the guide surface 19a. The catch 23 has a suitable elasticity and is fixed to the rear end face of the head 22. If no external force is applied to the latch 23, the distance between both free ends of the latch 23 is equal to the diameter of the space B of the socket 17. The thickness of each latch 23 is small at the fixing portion and gradually increases toward the free end.

When the insertion portion 21 is inserted into the socket 17 and fixed, the free end of the latch 23 is included in the space B as shown in FIG. Therefore, the free end of the latch 23 is firmly supported in the space B and is prevented from being separated therefrom. Since the clasp 23 is reduced in thickness near the fixing portion, it can be easily bent in the contracting direction when inserted along the guide surface 19a, so that the clasp 23 can be easily inserted into the socket 17. do. Furthermore, since the clamp 23 has an increased thickness at its free end, the strength of the fastener structure with the end accommodated in the space B is the force pulling the insert 21 from the socket 17. Can be increased against. In addition, since the cylindrical surface 24a and the cylindrical portion 25 are fitted in the guide surface 19a and cannot be moved in the axial direction, the insertion portion 21 is used in the first embodiment shown in FIGS. 3 to 8. It is more securely fixed to the socket 17.

After the insertion portion 21 is fixed to the socket 17, almost no shaking motion occurs in the socket 17.

The annular projection 30 formed inside the socket 29 may be arranged such that the inner surface of each projection 30 has an angle with respect to the guide surface 19a as shown in FIG. By adopting such an arrangement, the cylindrical portion 25 is elastically supported by the annular projection portion 30 and the rocking motion of the insert portion relative to the socket can be more effectively prevented. It is preferable that the alpha angle of each annular protrusion becomes about 10 degrees.

Example 3

The insert 31 of the fastener according to the third embodiment of the present invention is shown in FIGS. 14 and 15. Two catches 32 are formed immediately behind the upper end of the insert 31 so that these catches 32 constitute a portion of the upper end, and the enlarged head 7 as shown in FIGS. ) Is not formed in this example. In addition, the insertion part 31 includes a first connection part 33, a stop part 34, a second connection part 35, and a support part 36. The structure of the insert 31 is very simple and can be easily molded. Moreover, when the insert 31 is fixed to the socket, a very large coupling force can be obtained.

Example 4

A fastener 37 according to a fourth embodiment of the present invention is shown in FIGS. 16 to 19. 16 and 17, the hole 39 is formed on the socket 38 and both end faces 38a of the socket 38 are inclined well. The upper end of the insertion portion 40 is formed to have a two-pronged shape that includes two prongs 41. In the free state, these rakes 41 are expanded and the distance between the tip of the rakes is greater than the diameter of the hole 39. Each of the rakes 41 has a moderate elasticity. Rake protrusions Fluke 42 are respectively formed on the tip outer surface of the rake 41, and the inclination of the longitudinal surface 42a of the protrusion 42 coincides with the inclination of the end face 38a of the socket 38. . The cylindrical part 43, the stop part 44, the connection part 45, and the support part 46 are formed continuously in the back of the rake 41. As shown in FIG. The cylindrical portion 43 is fitted into the hole 39.

The function of each element according to the present embodiment is as follows.

When the insertion portion 40 is inserted into the hole 39 from its upper end, the distance between the two rakes 41 is contracted so that it can pass through the hole 39. When the longitudinal surfaces 42a of the protrusions 42 of the rakes 41 completely pass through the holes 39, the rakes 41 are inflated again due to their elasticity. Thus, even if the inserted insert 40 is pulled in the direction opposite to the inserting direction, the vertical surface 42a is firmly fixed on the end surface 38a of the socket 38 as shown in FIG. Insertion portion 40 is prevented from being released from socket 38. Therefore, the insertion portion cannot be separated from the socket 38. The inclination formed on the vertical surface 42a and the end surface 38a increases the prevention effect of the insertion portion 40 from the socket 38. The cylindrical portion 43 is fitted in the inner circumferential surface of the hole 39, and the shaking of the insertion portion 40 in the hole 39 is prevented. The fastener 37 having such a socket 38 and the insert 40 has a very simple structure and can be easily molded. The inner surface of the hole 39 may be inclined at an angle β from the center portion toward both end surfaces. In this case, inserting the insert 40 into the hole 39 can be greatly facilitated.

Example 5

A fifth embodiment of the fastener is shown in FIGS. 20 to 22. 20 and 21, an inner flange 50 having a guide surface 50a and a contact surface 50b is formed at the center of the hole 49 in the socket 48 of the fastener 47.

The insertion section 51 has two rakes 52 at its upper end, and in the free state, the distance between the tips of the rakes 52 is larger than the inner diameter of the guide surface 50a but smaller than the inner diameter of the hole 49. The outer diameter of the cylindrical portion 53 behind the rake 52 is made equal to the inner diameter of the guide surface 50a. When the insertion portion 51 is inserted into the hole 49 as shown in FIG. 22, the longitudinal surface 54a of the projection 54 of the rake 52 causes contact with the contact surface 50b. The insertion section 51 is fixed to the socket 48. At this time, since the projection 54a is accommodated in the hole 49, the risk of detachment of the insertion portion 51 from the socket 48 due to a failure or the like in the fastener of the present embodiment is shown in FIGS. It can be reduced in comparison with the fastener 37 shown in FIG. In addition, since the cylindrical portion 53 of the insertion portion 51 is fitted to the guide surface 50a, the shaking of the insertion portion 51 inside the guide surface 50a is effectively prevented.

The various variants described below can be made as fasteners of the above mentioned embodiments 1 to 5.

[Modification 1]

In the fastener of the first embodiment (see FIGS. 2 and 4), the insertion portion 6 is not limited to two numbers of two catches 8. For example, as shown in FIGS. 23 and 24, the insert 60 may have three latches 61, and as shown in FIGS. 25 and 26, the insert 62 may have four It may have a catch 63. Moreover, only one catch can be formed on the insert. If one or two catches are formed, the insert can be molded easily, and if two catches are formed, the engagement force is greater than in the case where only one catch is formed.

This modified example 1 can be similarly applied to the latches of the second embodiment (see FIGS. 9 to 11) and the third embodiment (see FIGS. 14 and 15), and also the fourth embodiment (see FIG. 16 and Similarly applicable to the pitchfork of Example 5) and Example 5 (see FIGS. 20 and 21).

[Modification 2]

In the fastener 5 of the first embodiment, the insertion part 6 includes an enlarged head 7, two catches 8, a first connection part 9, a spherical stop part 10, and a second connection part ( 11) and the support 12.

As shown in FIG. 27, in the present modification, the stop portion 65 of the insertion portion 64 has a cylindrical portion 65a on the side of the head 7 and a spherical portion 65b adjacent to the rear portion thereof. It is formed to include. The cylindrical portion 65a has a vertical surface 65c at its end on the side of the head 7 and has an outer diameter larger than the inner diameter of the guide surface on the inner flange of the socket. When the insertion portion 64 having such a stop portion 65 is inserted into the hole of the socket, the vertical surface 65c makes contact with the contact surface of the inner flange so that an effective stopping action can be obtained.

In addition, in Embodiment 1, forming the support 12 on the insert 6 may be omitted. That is, as shown in FIG. 28, such support 12 is not formed on the insertion portion 66, and only the long second connecting portion 67 is formed.

Furthermore, as shown in FIG. 29, the formation of the stop 10 and the support 12 on the insert 6 of Embodiment 1 may be omitted. In such a case, one elongate connection 69 is formed on the insert 68.

The structure of the fastener with this insert 68 is very simple and can be molded easily. With the insert 68 secured to the socket, the elongate connection 69, including the filaments, is easily bent.

FIG. 30 shows that the insertion portion 21 of Embodiment 2 (see FIGS. 9 to 11) is modified. That is, the inclined portion 72 that forms a gentle inclination is formed behind the stop portion 71 of the insertion portion 70. In this insertion portion 70, the inclined portion 72, the second connection portion 73 and the support portion 28 can be easily supported and the overall appearance of the insertion portion 70 is greatly improved.

In FIG. 31, a neck 76 having a small outer diameter is formed on the second connection portion 75 of the insertion portion 74. As shown in FIG.

After inserting the insertion portion 74 into the socket, if it is desired to disengage the coupling between the insertion portion 74 and the socket, any damage to the latch or the like may be achieved by simply pulling the insertion portion 74 with a relatively small pulling force. It can be easily made by breaking the insertion portion 74 in the neck 76 without giving. Moreover, when a bending force is applied on the insert 74 with this neck 76, this bending force is absorbed by the neck 76.

The foregoing modification 2 shown in FIGS. 27 to 31 can be applied to any insert of Embodiments 1 to 5.

[Modification 3]

In Embodiment 1, the inner flange 15 formed in the hole 14 of the socket 13 extends along the entire circumference of the hole 14. In a variant thereof, as shown in FIG. 32 and FIG. 33, the hole 79 of the socket 78 of the fastener has an inner flange 81 comprising four independent pieces 80. Each independent piece 80 has a guide surface 80a and a contact surface 80b. Four guide surfaces 80a form one cylindrical surface with the same axis as the hole 79, and four corresponding contact surfaces 80b form one plane. In this modification, the number of independent pieces is not limited and may be arbitrary. The socket 78 of this variant may be molded from a small amount of material.

This variant can be applied not only to the socket of the first embodiment but also to the sockets of the second, third and fifth embodiments.

[Modification 4]

As shown in FIG. 34, in the present embodiment, the conical enlarged tip portion 48 and the first connecting portion 85 are formed in the upper unit of the insertion portion 83 of the fastener 82, as shown in the first embodiment. Arbitrary-numbered devices, including an enlarged head 7 and two catches 8 as one, are arranged at appropriate intervals following the first connection 85. These devices are connected to each other in a straight line via the second connection 86.

In the fastener 82 of the present modification, an appropriate catch 8 selected according to the size of the product is engaged with the socket 13 and protrudes from the hole 14 at the time of fastening the enlarged tip portion 84. The operator can pull the enlarged tip portion 84 thus projected to tighten the fastener 82.

This modification can be applied to the fasteners of Examples 1 to 3.

[Modification 5]

As shown in FIG. 42, a plurality of fasteners 5 according to the first embodiment are arranged in parallel and the socket 13 of each fastener is connected by the first connecting member 101, and each fastener For example, the support part 12 of the insertion part 6 of the is connected by the second connecting member (102). In this way, the fastener assembly 100 is integrally formed. When each fastener 5 of the assembly 100 is used one by one, the connecting members 101 and 102 can be detached by hand. The fastener assembly 100 can be easily handled in the manufacturing or packaging phase or when the fastener is actually used.

This connecting member may be formed to connect only the socket 13 of each fastener, or may be formed to connect only the insert 6 of the fastener.

This modification can be applied to the fasteners of Examples 1 to 5.

It may be applied in combination of two or more of the above-described modifications 1 to 5. For example, three braces are formed in the organizer 16 of Embodiment 2 in accordance with variant 1, the construction of the support is omitted in accordance with variant 2, and the inner flange of the socket has four A plurality of fasteners formed in a separate piece and connected to the socket through the connecting member according to variant 6, in this way a fastener assembly with the characteristics of each variant can be obtained.

Claims (1)

In a fastener consisting of a socket having an insertion hole and an intermediate filament and an insertion portion provided at the guide end of the filament, which can be fixed in the hole of the socket, the guide surface 15a coaxial with the axis of the hole 14 and the axis. It includes two perpendicular contact surfaces 15b, and when free with the rigid inner flange 15 formed in the center of the hole 14, its free end expands radially outward with respect to the axis of the insert 6 While passing through the guide surface 15a, it is contracted radially inward and at the same time passes completely through the guide surface 15a, it returns to its original state and is formed on the insertion portion 6 so as to be fixed to the contact surface 15b of the socket 13. Fasteners, characterized in that they consist of at least one elastic latch (8).