JPH08131215A - Plastic buckle - Google Patents

Abstract

PURPOSE: To get firm coupling of main central part and enable maintaining of stable coupling by wedging a guide member in the corresponding shape projected at a male member into the guide groove in the shape of a wedge made at the center of a female member at coupling. CONSTITUTION: When the tip side of the flexible arm 19 of a male member 1 is inserted into the hollow part 8 through the opening 9 of a female member 2, the outside flanks of both locks 20 abut on the peripheral walls of the hollow parts 8, and both flexible arms 19 bend little inward with each other by elasticity, and advance while sliding on the peripheral walls of the hollow parts 8 in intact condition. At the same time, the guide member 24 also goes on freely without sliding within the guide groove 15 in opposite position, and then, when both flanks of the guide members 24 and both flanks of the guide groove 15 abut on each other, the insertion stops, and both gets in wedged condition, and the wedging on central side in a buckle is performed, and the coupling is completed. At the same time, both locks 20 are positioned in a window part 10, and a lock step 21 reaches the brim of the hole 11 of the window part, and it gets in free condition without restraint by the hollow part 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic buckle for connecting belts used for clothes, various bags and the like.

[0002]

2. Description of the Related Art Generally, various kinds of plastic buckles for connecting belts have already been proposed,
It has been put to practical use. For example, Published Japanese Patent Publication No. 61-500
No. 005, Japanese Patent Publication No. 62-55401, Japanese Patent Publication No. 4-31
No. 683, No. 4-7772, No. 4-6568
No. These are mainly a pair of flexible arms protruding in parallel from both sides of the belt connecting portion of the male member, and a rectangular intermediate arm is provided in the middle, and the intermediate arm is slid in straight contact to receive the fitting. In many cases, the groove is provided in the hollow portion of the female member. An example of this will be described with reference to FIG. 19, in which the female member 31 and the male member 37 are inserted into the opening 34. Flexible arms 40 are provided on both sides of the belt connecting portion 39 of the male member, and intermediate arms 41 are projected in parallel between the flexible arms 40, and a raised portion 42 is formed in the intermediate arm 41, while a raised portion 42 is provided in the hollow portion of the female member 31. A pair of facing guide grooves 36 are provided.

When the male member 37 is inserted into the female member 31 having the above structure, the raised portions 42, 42 are slidably contacted with the guide groove 36 and guided. For this reason, the male member 37 enters straight and is connected, and when releasing, the guide groove 36 is also provided.
The male member 37 is pulled out straight by the sliding contact between the and the raised portions 42, 42.

[0004]

However, since the guide groove 36 and the raised portions 42, 42 have a linear structure parallel to the connecting direction of the female member 31 and the male member 37, the connection or the release thereof is ended. Up to guide groove 36 and ridge 4
2 and 42 are in sliding contact operation.

Therefore, in order to facilitate the attachment and detachment of the female member 31 and the male member 37, the guide groove 36 and the raised portion 4 are formed.
It is necessary to keep a small gap between the first and second insertion holes 2 and 42, and when a flexible material is used, a problem arises such that deformation is caused when a twisting rotation is applied to one flexible arm 40. There is.

In particular, when the belt is worn, there is a concern that soft fingers and the like are sometimes pinched between the male and female members and may hurt.

The present invention has been made in view of the above points, and even if the male member is obliquely inserted into the female member without rattling between the connected female member and male member. In this case, it is an object of the present invention to provide a plastic buckle that can be smoothly and easily connected and disconnected, enables the use of an inexpensive soft material, and has high safety at the time of fitting and detaching. .

[0008]

In order to achieve the above-mentioned object, according to the present invention, one side of a cylindrical body having a pair of opposing wide side walls connected by a pair of opposing walls is used as an opening and a window is provided on the opposing wall. A female member having a belt connecting portion on the other side of the tubular body, and a pair of flexible arms which enter the one side of the connecting body capable of contacting the opening through the opening and are locked to the window portion. In a plastic buckle that is formed of a male member having a belt connecting portion on the other side of the connecting body, a wedge-shaped (tapered) guide member is provided between both flexible arms of the male member connecting body in the same direction. A guide groove that can be wedged with the guide member at the end of connection with the male member is formed in the inner space of the cylindrical body of the female member.

Further, in the male member and the female member, the combination of the guide member or the guide groove provided in each and the guide groove or the guide member capable of being wedged therein may be reversed.

Further, from the viewpoint of safety, a concave space is provided between the belt connecting portion of the male member and the flexible arm, and further, the connecting band base of the male member is brought into contact with the open end of the female member. It is necessary to provide a stop step portion for stopping the entrance of the male member at a predetermined position.

A plurality of guide members and a plurality of guide grooves that can be wedged therein may be provided.

[0012]

Describing the embodiment shown in the drawings, when the male member is inserted into the female member of the plastic buckle of FIG. 8 showing the basic structure of the single wedge, as shown in FIG. The guide member is fitted into the guide groove in the center of the female member, and at the end of the connection, the guide member is wedged to the guide groove on the center side of the buckle, so that the two are in a connected state without rattling. At the same time, the locking bodies at the ends of the pair of flexible arms of the male member enter the corresponding windows of the respective female members by elastic force, the male member is locked to the female member, and the male member is in a state in which it cannot be disengaged.

Next, when the locking bodies are pressed inwardly as shown in FIG. 10, the locking bodies are disengaged from the window and the locking of the male member is released, and at the same time, the guide groove and the guide member are wedged. Also released, the male member is free and easily separated from the female member.

In addition, in the structure of FIG. 11 in which the wedge-shaped guide groove is formed at the center of the guide member tip of the male member, in addition to the above-mentioned wedge-shaped guide groove and guide member on the center side at the time of connection,
As shown in FIG. 12, the wedge member on the back side is simultaneously formed by the guide member protruding on the back side of the female member and the guide groove formed on the tip of the guide member of the male member.

Further, in the case of the structure of FIG. 13 in which a wedge-shaped guide member is provided at the center of the guide member base of the male member, in addition to the wedge attachment on the center side, a guide groove formed on the opening side of the female member is used. Figure 1
As shown in FIG. 4, the guide member protruding from the guide member base of the male member is wedged on the inlet side at the same time.

FIG. 15 shows an example in which two guide members of FIG. 13 are provided, and the same operation as in FIG. 13 is performed.

In the case of the structure shown in FIG. 16 in which the three-point wedge is supported, the central groove, the inner groove, and the inlet groove are simultaneously wedged with the guide member.

On the other hand, in FIGS. 1 and 8, the male member 3 is held vertically by providing the recessed space 29 between the belt connecting portion 22 of the male member 3 and the flexible arm 19.
When inserting and fitting into the female member 2, the fingers hit the end of the opening 9 of the female member 2, rebound, and settle in the recessed void portion 29.

Further, the connecting band base portion 17 of the male member 3 is provided with a stop step portion 18 which comes into contact with the end of the opening 9 of the female member 2 to stop the entry of the male member 3 at that position. When the male member 3 is laterally gripped and inserted and fitted into the female member 2, a force is exerted to push the fingers outwards at the time of fitting.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the embodiments shown in FIGS. 1 to 18, hereinafter, in FIGS. 1 to 9 of a one-point wedge, reference numeral 1 is a belt 4 composed of a detachable female member 2 and a male member 3. It is a buckle for four connections and is made of a flexible plastic material such as nylon.

2 to 4, the female member 2 has a flat cylindrical body 7 in which opposed wide side walls 5 and 5 are connected by a pair of opposed walls 6 and 6, and one side thereof is hollow in the cylindrical body 7. It is the opening 9 of the portion 8. A window portion 10 is provided at a predetermined position in the opposing walls 6 and 6 so as to face each other, and is opened in the hollow portion 8. A hole edge 11 formed in the opposing wall 6 by the window portion 10
Is formed so that the locking body 20 of the flexible arm 19 described later can be engaged and disengaged.

A belt connecting portion 12 is provided on the side opposite to the opening 9 of the cylindrical body 7.
The bottom portion 13 of the belt connecting portion 12 is positioned like a lid that covers the hollow portion 8 of the cylindrical body 7, and the slit 14 for inserting the belt 4 is formed along the bottom portion 13.

In the hollow portion 8 of the tubular body 7, a wedge-shaped guide groove 15 is formed along the axial direction of the tubular body 7. The guide groove 1
5 is a pair of wall bodies 1 provided to face the inner peripheral surfaces of the side walls 5, 5.
6 and 16 facing each other, the base portions of both wall bodies 16 are connected to the bottom portion 13. The opposite surface is formed such that its tip end side is inclined toward the opening 9 side in a divergent manner, and a wedge-shaped guide groove 15 is formed therebetween.
It has a shape that can be wedged with the wedge-shaped guide member 24 of the male member 3 described later.

5 to 7, the male member 3 has a plate-like connecting body 17 which can be inserted into the hollow portion 8 of the female member 2, and is in contact with the end surface of the opening 9 of the female member 2 at the substantially center thereof. The male member 3 is positioned at the time of insertion, and a stop step portion 18 is provided so as to prevent the fingers from being caught.

On one side of the connecting body 17, the opening 9 of the female member 2 is formed.
A pair of flexible arms 19 that can enter the hollow portion 8 from
Numerals 19 are provided so as to be projected at a predetermined interval, and a locking body 20 having an arcuate outside is formed at each tip. At the base of each locking body 20, the window portion 1 in the female member 2 is provided.
An engaging step portion 21 that can be engaged and disengaged is provided on the hole edge 11 of 0, which is formed by inserting the male member 3 into the female member 2 and attaching the guide groove 15 and a guide member 24, which will be described later, to a wedge. When the connection is completed by, the structure is set so as to be substantially the same level so that it can move to the hole edge 11 side. Further, the distance between the tips of both locking bodies 20 is slightly smaller than the opening of the opening 9, and both locking bodies 20
The distance between the outer surfaces of is slightly larger than the opening of the opening 9.

On the other side of the connecting body 17, there is provided a belt connecting portion 22 having a slit 23 for mounting the belt 4.

A wedge-shaped guide member 24 capable of being wedged with the guide groove 15 of the female member 2 is provided between the flexible arms 19 and 19, and the wedge-shaped guide member 24 passes through the center of the connecting member 17 and is flexible. The guide member 24 extends in the same direction as the arm 19 and the guide member 24 is
When inserted therein, the tip has such a length that it reaches near the bottom 13.

FIG. 8 shows the female member 2 and the male member 3 having the above construction.
When the front ends of the flexible arms 19 and 19 are inserted into the hollow portion 8 through the opening 9 as shown in FIG. Elastically bend to each other slightly due to elasticity, and proceed while sliding as they are on the peripheral wall of the hollow portion. At the same time, the guide member 24 also moves freely without sliding in the guide groove 15 at the opposite position, and when both side surfaces of the guide member 24 and both side surfaces of the guide groove 15 come into contact with each other, the insertion is stopped. As a result, the two are put into a wedged state, the central side of the buckle 1 is wedged, and the connection is completed. At the same time, the two locking bodies 20 are respectively positioned in the window portion 10, and the locking step portion 21 is formed in the hole edge 1 of the window portion.
1 and reach a free state where there is no restraint by the hollow part 8,
As a result, the flexible arms 19 and 19 held in the bent state
Spreads outward vigorously due to its resilience. As a result, each locking member 21 moves to the surface of the hole edge 11,
Both flexible arms 19 are locked to the window portion 10, respectively, as shown in FIG.
As shown in FIG. 3, the male member 3 is maintained in a strong connected state in which it cannot be pulled out from the female member 2.

To release the connection between the two, the window portion 10
When the more protruding locking bodies 20 are pressed inward with fingers, the flexible arms 19 and 19 shown in FIG.
Pull in from the end face. Thereafter, due to the interaction between the elastic force of the flexible arm 19 and the arcuate outer surface of the locking body 20 and the peripheral wall of the hollow portion 8, the male member 3 is urged in the extracting direction and pushed out from the female member 2, Immediately after the push-out movement, the wedge attachment between the guide groove 15 and the guide member 24 is also released, and the guide groove 15 and the guide member 24 are smoothly pulled out without any resistance such as sliding and the connection is released.

In the embodiment of the two-point wedge shown in FIGS.
In the female member 2, a wedge-shaped guide member 25 toward the opening 9 connects the base portion to the bottom portion 13 at the center of the guide groove 15 formed in the hollow portion 8 on the bottom portion 13 side, that is, at the back side of the female member 2. It is provided so as to project in a state, and when the connection with the male member 3 is completed, it can be wedged with a later-described wedge-shaped guide groove 26 formed in the male member 3.

A wedge-shaped guide groove 26 corresponding to the guide member 25 is formed in the center of the tip of the guide member 24 in the male member 3, and the male member 3 is inserted into the female member 2 to attach the wedge on the center side. 12 and at the same time when the connection is completed,
As shown in FIG. 5, the guide member 25 is wedged in the guide groove 26, and the wedge-shaped engagement is also performed on the back side.

In the embodiment shown in FIGS. 13 and 14 as another example of the two-point wedge, a wedge-shaped guide groove 27 in the same direction as the guide groove 15 is provided on the side of the side walls 5, 5 of the female member 2 closer to the opening 9. 27 is formed (see FIG. 1) and can be wedged with the wedge-shaped guide member 28 at the end of connection with the male member 3 described later.

The guide member 28 is the guide member 24 of the male member 3.
When the female member 2 and the male member 3 are connected to each other at the center of the base portion, a wedge-shaped guide member 28 is attached to the guide groove 27 on the inlet side at the same time as the central-side wedge attachment as shown in FIG. ，
In other words, it is a double wedged connection in which the wedged side is also formed on the inlet side.

Further, FIG. 15 shows another example of the two-point wedge, in which the male member base is provided with two projecting members and the female member is provided with a guide groove capable of being wedged thereto. Is.

In the embodiment shown in FIGS. 16 and 17, the guide grooves 15 and 27 described above are formed in the female member 2 and the guide member 25 is provided so as to project, whereas the male member 3 corresponds to these. The guide members 24 and 28 are provided so as to project, and the guide groove 26
At the end of the connection between the two, the guide grooves 15, 26, 27 form a triple wedge-shaped connection with the guide members 24, 25, 28, respectively, as shown in FIG. Even if the male member 3 is obliquely inserted into the female member 2, the guide member 24 having a long length comes into contact with the guide groove 15 so that the direction is corrected and the guide member 24 is guided to the correct insertion state. Further, for example, the guide member 25 is used as a guide groove formed on the inner surfaces of the side walls 5 and 5, whereas the guide groove 26 is provided to the guide member 2.
It is possible to make changes so as to project into a shape corresponding to the four surfaces.

Further, in the example shown in FIG. 18, one or a plurality of pairs of pocket-shaped guide grooves 30 are provided on the left and right sides of the base of the guide member 24 of the male member 3, and the female member 2 is connected when the male and female members are connected. The front end portion 30A of the wall body 16 forming the guide groove 15 is wedge-fitted to the pocket-shaped guide groove 30.

In the example of FIG. 4, the wall 16 is formed by connecting the side walls 5 and 5, but it may be in a discontinuous and separated state having a crack at the center.

On the other hand, in FIGS. 1 and 8, the male member 3 is held vertically by providing the recessed gap portion 29 between the belt connecting portion 22 and the flexible arm 19 of the male member 3.
When inserting and fitting into the female member 2, the fingers are safe because they do not hit the end of the opening 9 of the female member 2, rebound, settle in the recessed space 29, and the fingers are not caught.

Further, the connecting band base portion 17 of the male member 3 is provided with a stop step portion 18 which comes into contact with the end of the opening 9 of the female member 2 to stop the entry of the male member 3 at that position. When the male member 3 is laterally grasped and inserted and fitted into the female member 2, the force of pushing out the fingers outwardly at the time of fitting is exerted, and it is safe without causing the fingers to be caught.

[0040]

As is apparent from the above description, according to the present invention, since the wedge-shaped guide groove formed in the center of the female member and the corresponding guide member projecting from the male member are wedge-fitted at the time of connection, A strong connected state on the center side, which is the main body, is obtained, and there is no rattling or horizontal or vertical shake after connection, and a stable connected state can be maintained. Further, during insertion and removal, the guide groove and the guide member do not slide, and the wedged state can be released very quickly and easily, so that the attachment / detachment operation can be performed easily and lightly, and the buckle itself. There is little wear or failure. Moreover, since the guide groove is built in the inner surface of the cylinder, it acts as a rib to improve the strength of the female member.

Further, a small wedge-shaped guide member is projected on the inner side of the guide groove of the female member, and a wedge-shaped guide groove corresponding to the guide member is formed at the tip of the guide member of the male member, so that the central portion at the time of connection. The double-sided wedge-shaped connection between the side and the back side makes it possible to make the connection on the back side of the buckle particularly strong.

Further, a small wedge-shaped guide groove is formed on the inlet side of the side wall of the female member, and a wedge-shaped guide member corresponding to the guide groove is projectingly provided at the base of the main guide member at the center of the male member. Thus, a buckle in which the connection on the inlet side is particularly strong can be obtained by adopting a configuration that enables double wedge-shaped coupling on the center side and the inlet side at the time of connection.

Further, by providing the wedge-side means on the back side and the entrance side, the entire central portion connecting the center side, the back side and the entrance side of the buckle is triple-wedge-joined.
An extremely strong connection is obtained, and rattling and vertical / horizontal wobbling are completely eliminated, and the structure becomes strong, and even if a soft material is used, there is no inconvenience such as deformation or accidental detachment of the flexible arm.
It should be noted that the same effect can be expected by providing the protruding guide member and the guide groove that fits with the protruding guide member in the above-described embodiment on the male member and the female member, respectively. Furthermore, since the deep portion and the inlet are fitted tightly when they are joined and there is no vertical or horizontal deviation, no accidental disengagement of the twisting operation occurs, so an inexpensive soft material can be used. Furthermore, since engagement and disengagement of the male member and the female member are wedge-shaped (tapered), smooth induction fitting and disengagement are possible,
Safety can be ensured because hands, fingers, skin, clothes, etc. are not caught.

Furthermore, in the wedge coupling, the angle of the wedge-shaped gap between the male member and the female member is defined,
In the mold production, the alignment adjustment is easy, the accuracy can be brought close to zero without limit, and the mold repair work is easier than the parallel sliding contact.

Further, the die of the female member is a combination of a mating die and a drawing die forming a hollow portion. In this drawing die, those having parallel sliding contact are formed on the raised portion inside the female member. Since there is an upward slope, the gap between the back and the entrance will be different,
It is difficult to eliminate rattling, but it can be improved by using a wedge structure.

In connecting the female member, the buckle of the present invention can be wedged regardless of the front and back sides of the male member, and in the production of the male member, a thin plate material can be used in press working. Therefore, a light, thin, short, small, and simplified design can be made.

[Brief description of drawings]

FIG. 1 is a perspective view of a buckle in a detached state.

FIG. 2 is a partially cutaway front view of a female member.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a side view taken along line IV-IV in FIG.

FIG. 5 is a front view of a male member.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a side view taken along line VII-VII of FIG.

FIG. 8 is a partially cutaway front view of the buckle in a detached state.

FIG. 9 is a partially cutaway front view of the buckle in a connected state.

FIG. 10 is a partially cutaway front view showing a state where the buckle is uncoupled.

FIG. 11 is a partially cutaway front view of the buckle in which a wedge fastening portion is added to the back side in a detached state.

FIG. 12 is a partially cutaway front view of the buckle shown in FIG. 11 in a connected state.

FIG. 13 is a partially cutaway front view of the buckle in which a wedge attachment portion is added to the entrance side in a detached state.

14 is a partially cutaway front view of the buckle shown in FIG.

FIG. 15 is a partially cutaway front view of the buckle in which two wedge fastening portions are added to the entrance side in a detached state.

FIG. 16 is a partially cutaway front view of the buckle in which a wedge fastening portion is added to the back side and the entrance side in a detached state.

17 is a partially cutaway front view of the buckle shown in FIG. 15 in a connected state.

FIG. 18 is a diagram showing an example in which pocket-shaped guide grooves are provided on the left and right sides of the guide member base of the male member.

FIG. 19 is a perspective view of a conventional buckle in a detached state.

[Explanation of symbols]

 1 buckle, 2 female member, 3 male member, 5 side wall, 6 opposing wall, 7 cylindrical body, 8 hollow part, 9 opening, 10 window part, 11 hole edge, 12 belt connecting part, 13 bottom part, 15, 26, 27 Guide groove, 17 connected body, 18 stop step, 19 flexible arm, 21 locking step, 24, 25, 28 guide member, 29 recessed cavity, 30 pocket-shaped guide groove,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masako Araki Masako Araki 1-415 Otakuyama, Midori-ku, Aichi Prefecture, No. 103, Cyatre Midorigaoka 103 (72) Inventor Keiji Minoh 4455 Nakanoho Nakanoho, Mugi-cho, Gifu Prefecture

Claims (7)

[Claims] 1. An opening is provided on one side of a tubular body in which opposing wide side walls are connected by a pair of opposing walls, a window portion is provided corresponding to the opposing wall, and the other side of the tubular body is belt-connected. And a pair of flexible arms that enter through the opening and are locked to the window portion on one side of the connecting body that can come into contact with the opening, and the other side of the connecting body In a plastic buckle composed of a male member having a belt connecting portion, a wedge-shaped guide member is provided between both flexible arms of the male member connecting body in the same direction, and the inner space of the female member cylindrical body is protruded. A plastic buckle, characterized in that a guide groove which can be wedged with the guide member at the end of connection with the male member is formed in the portion. 2. A guide groove having a wedge shape is formed in the center of the guide member of the male member, and the guide groove of the male member is formed at the center of the bottom side of the guide groove formed in the female member at the end of connection with the male member. The plastic buckle according to claim 1, further comprising a guide member that can be wedged. 3. A guide member, which is wedge-shaped, is provided at the center of the base of the guide member of the male member, and the guide member of the male member can be wedged with the guide member when the connection with the male member is completed at the opening side of the side wall of the female member. The plastic buckle according to claim 1 or 2, wherein a groove is formed. 4. A combination of a guide member or guide groove provided in each of the male member and the female member and a guide groove or guide member which can be wedged in the guide member or guide groove are reverse to each other.
Or the plastic buckle described in 2. 5. The plastic buckle according to claim 1, wherein a recessed space is provided between the belt connecting portion of the male member and the flexible arm. 6. The plastic buckle according to claim 1, wherein a stop step portion is provided on the base of the connecting band of the male member to stop the entry of the male member at a predetermined position by contacting the open end of the female member. 7. The plastic buckle according to claim 1, wherein a plurality of guide members and a plurality of guide grooves that can be wedged therein are provided.