HK1061336B - Slide fastener - Google Patents

Description

Slide fastener

Technical Field

The present invention relates to a handle rotation type slider of a slide fastener, in which a handle of the slider can be rotated from a top surface to a front surface and a bottom surface of a body, and an upper stopper provided on a lock chain is opposed to the handle rotation type slider.

Background

In a conventionally known slider of a pull-turn type in a slide fastener, a U-shaped guide bar provided on a body so as to guide a pull-turn from a top surface of the body to a front surface and a bottom surface thereof is formed to have a T-shaped section. In addition, the T-shaped guide portion for guiding the handle is configured such that: the inner surface at its corner presents a right angle. For example, according to the handle rotation type slider disclosed in japanese utility model application laid-open No. 38-7934, as shown in fig. 13, the inner surface at the corner of the U-shaped guide bar 110 provided on the body 119 forms a right angle, and the inwardly directed connecting pieces 118 provided on both sides of the front end of the handle 117 are fitted therein.

An upper stopper provided on the lock chain, on which the pull-turn type slide head formed in the aforementioned manner is slidably mounted, is not an upper stopper having a specific shape but a rectangular upper stopper made of a thermoplastic resin which is generally used or a metal upper stopper having a U-shaped section. Thus, it does not particularly correspond to the upper stop of the U-shaped guide bar of the pull-rotating type slider.

The zipper of the present invention is attached to the mouth of the front pocket of a garment such as a hooded jacket, as shown in fig. 2, so as to be used bilaterally, and is convenient when it is used to adapt the garment to a pocket that can be used bilaterally. Therefore, if the zipper is attached to the edge of the pocket mouth and used bilaterally, the locking band on the front end with respect to the upper stopper is more or less installed in a closed state, as shown in fig. 3, for example, to form a pocket with a good appearance.

In the case of the aforementioned conventional pull-tab rotation type slider and the upper stopper, if the slide fastener is opened or closed with such a state, when the pull-tab rotation type slider is operated to be opened from its closed state to its open state, the upper stopper of the lock chain comes into contact with the inner surface of the guide portion 111 having a T-shaped section on the U-shaped guide bar 110 of the pull-tab rotation type slider, thereby making it difficult to start or manipulate the slider for smooth opening.

The present invention has been made in view of the above problems, and it is a main object of the present invention to provide a slide fastener in which a pull-up type slider and/or an upper stopper includes a guide portion for guiding the upper stopper and a guide bar in a direction away from each other in a sliding contact state when the pull-up type slider is operated to open a lock chain, when the slide fastener is closed, thereby ensuring smooth starting of an opening operation.

In addition to this object, another object of the present invention is to provide a slide fastener in which even if two lock tapes are disposed in a closed state on the front end with respect to an upper stopper installed on a lock chain, that is, they are close to each other, excessive contact between a guide bar and the upper stopper can be easily released, so that an opening operation of a slider of a pull-turn type can be smoothly started. Further, another object is to provide a slide fastener which can obtain a smooth opening operation of a pull-rotating type slider, which includes a pull-rotating type slider that allows its pull to be rotated safely without being disengaged from a guide bar through a guide portion.

Disclosure of Invention

In order to accomplish the above object, according to the present invention, there is provided a slide fastener including a pull-turn type slider capable of opening or closing a fastener chain in the slide fastener and having guide bars continuously protruded from top, front and bottom surfaces of a body of the slider, wherein the pull-turn type slider and/or an upper stopper includes a guide surface for guiding the guide bar and the upper stopper which are maintained in a contact state with each other when the fastener chain is closed, so as to achieve sliding contact and separation between the guide bar and the upper stopper when the fastener chain is opened.

With such a structure, it is possible to obtain a slide fastener in which the pull-rotating type slider can be actuated very smoothly when it is intended to open the lock chain in the closed state, and further the opening operation is easily performed.

More preferably, the locking band on the front end side with respect to the upper stopper attached to the locking chain is arranged such that: they are bent inwards, i.e. in a closed state. According to the structure of the present invention, even if the front ends of the fastener chains are relatively arranged in the closed state, the pull-rotating type slide head can be smoothly actuated and the opening operation can be smoothly performed, thereby completing the slide fastener which is optimum for the products which can be used on both sides.

Further, in the pull-turning type slider provided on the lock chain, it is preferable that a pull guide portion having a T-shaped section is integrally formed continuously along the guide bar, and an inner edge of the pull guide portion mounted on the lock chain includes a guide surface for the upper stopper, the guide surface being formed as an arc surface or a slope surface. As an alternative, the upper stopper mounted on the lock chain may include a guide surface for the guide bar formed as a curved surface or a slope on an outer edge corner of the upper stopper contacting the guide bar of the pull-rotating type slide head. With such a structure, the pull-rotating type slider provided on the lock chain can be actuated very smoothly.

Further, it is preferable that a guide surface for an upper stopper provided on a handle guide portion in a guide bar of the handle rotation type slide head is provided on an inner edge of the handle guide portion on the front face of the body or on an inner edge of the handle guide portion on the front face of the body which is brought into sliding contact with the upper stopper. According to this structure, the pull-rotating type slide head which can quickly correspond to the shape of the upper stopper can be easily provided.

Further, a guide surface for an upper stopper provided on a handle guide portion in a guide bar of a handle-turning type slider has a horizontal holding surface capable of sliding contact with a link at a base end thereof. According to this structure, in the pull-rotating type slider inserted into the lock chain, the pull can be held firmly within the guide bar so that it never falls off, and at the same time, the pull can be moved easily around.

Brief description of the drawings

Figure 1 is a front view of the slide fastener,

figure 2 is a front view of a garment using a zipper,

figure 3 is a front view showing a condition of use of the slide fastener,

figure 4 is a front view of a pull rotated type slider (slider),

figure 5 is a side view of the same pull-rotating slider,

figure 6 is a cross-sectional view of the same handle-rotatable slider taken along line VI-VI in figure 4,

FIG. 7 is a cross-sectional view of the front part (front piece) of the guide bar (guide lever),

fig. 8 is a sectional view showing a modified form of the front part of the guide bar,

fig. 9 is a front view, partially in section, showing a starting mechanism (starting mechanism) provided in the guide bar,

fig. 10 is a side view, showing a modified form of a handle-rotating type slider,

fig. 11 is a front view, partly in section, showing a starting mechanism and upper stop provided in the guide bar,

fig. 12 is a front view, partly in section, showing a trigger mechanism provided on the upper stopper,

fig. 13 is a front view of a known pull-handle rotating slider.

Description of the preferred embodiments

Hereinafter, embodiments of the slide fastener of the present invention will be described with reference to the accompanying drawings.

The zipper of the present invention is a reversible zipper for use on a pocket B of a garment a such as a hooded jacket as shown in fig. 2. This slide fastener is a well-known slide fastener, and for example, in the slide fastener 1 shown in fig. 1, a locking member (fastener element)3, an upper stopper 4 and a lower stopper 5 are integrally molded along the side edge of a locking tape (fastener tape)2 by an injection molding method using a thermoplastic resin such as polyacetal, polyamide, polypropylene, polybutylene terephthalate or the like, so as to manufacture the slide fastener. Meanwhile, the locker may be a zigzag-shaped linear locker made of a synthetic resin monofilament or a single metal member.

As shown in fig. 4 to 6, in the known double-sided pull-handle rotary-type slider 6, in order to form the pull handle 7 that can be bypassed from the top surface to the front and bottom surfaces of the body 9, wherein the upper plate 15 and the lower plate 16 are connected by a block 17, a U-shaped guide bar 10 that completely assumes the shape of a letter U is mounted on the body 9. The U-shaped guide bar 10 is installed such that it surrounds the erection column 22 erected at the rear mouths of the upper and lower panels 15 and 16 of the body 9 with the U-shaped guide bar 10 being able to move slightly forward and backward. As a result, the U-shaped guide bar 10 is moved by pulling the handle 7 in the front-rear direction.

A recess 21 is provided on the front face of the block 17 of the body 9 to receive the hook 31 of the locking lever 28. Further, an insertion hole 24 is provided transversely at the middle of the block 17, in which a spring 33 is fitted to press the hook 31 of the locking lever 8. A pawl hole 23 is made near the rear mouth portion of the upper plate 15 of the body 9 and a locking pawl 29 of a locking lever 28 is fitted therein. The locking pawl 29 can be moved into or out of the guide groove 20 of the locking member 3.

In the handle rotation type slider 6, the body 9 and the U-shaped guide bar 10 are separately formed by die casting using metal such as aluminum alloy, zinc alloy, or the like, respectively, and the handle 7 is manufactured by pressing a metal plate. After that, the handle rotation type slider 6 is assembled.

The inner surface of the U-shaped guide bar 10 forms a T-shaped section. For example, as shown in fig. 7, in a front part 39 of a U-shaped guide bar 10 provided on the front face of a body 9, the center of a T-shaped pull guide portion 11 is projected inward, thereby forming a cam 25, and a groove 13 is provided in the center of each pull guide portion 11 of an upper part 37 and a lower part 38. The top of the locking lever 28, supported by the body 9, fits into the recess 13 of the upper part 37, while the rows 19 projecting on one surface of the lower plate 16 of the body 9 fit into the recesses 13 of the lower part 38.

The locking lever 28 is entirely formed in a substantially elongated inverted U-shape and is provided at one end with a locking pawl 29 and at the other end with a hook 31 that is longer than the locking pawl 29. A pin hole 32 is provided at the base of the hook 31 to support the locking lever 28 on the body 9 with a pin 34 so that it can swing freely. A projection member 30 is protrudingly provided on the upper side of the hook member 31, and the projection member 30 is fitted into the elongated hole 26 provided in the U-shaped guide bar 10, thereby restricting the swing of the lock lever 28 in the front-rear direction. When the U-shaped guide bar 10 is moved forward with the handle 7, the projecting piece 30 is pressed by the edge portion of the elongated hole 26. As a result, the lock pawl 29 is caused to float from the guide groove 20 against the elastic force of the spring 33, so that the pull-turning type slide head 6 can slide in the closing direction.

If the handle-rotating type slider 6 is slid in the opening direction, the U-shaped guide bar 10 is moved toward the rear mouth by pulling the handle 7, and at the same time, the hook 31 presses the spring 33 through the cam 25 and adds pressure to the spring 33, thereby floating the lock pawl 29 from the guide groove 20. As a result, the handle-rotating type slider 6 can be slid. Generally, the pull-rotating type slider is operated as described above.

The slide fastener of the present invention is characterized in that an actuating mechanism is provided which allows the pull-turn type slider 6 to be smoothly actuated in the direction in which the fastener chain 1 is opened when the slide fastener is used in the manner in which the distal end of the fastener tape 2 is closed as shown in fig. 3. In the case where the conventional slide fastener is in the state shown in fig. 3, the front end of the upper stopper 4 mounted on the fastener chain 1 is brought into contact with the corner of the pull guide portion 11 in the U-shaped guide bar 10 provided in the pull-turning type slider 6. As a result, the sliding of the pull-rotation type slide head 6 is prevented and the starting of the slide head becomes difficult.

According to the first embodiment of the starting mechanism in the pull-rotating type slider 6 of the present invention, as shown in fig. 5, in the U-shaped guide bar 10 provided on the periphery of the body 9, in addition to the upper member 37 and the lower member 38, a slope of the inner edge portion of the pull guide portion 11 in the front member 39 is cut as shown in fig. 7 and 9, thereby forming the guide surface 12 for the upper stopper.

The pull guide portion 11 of the U-shaped guide bar 10 is formed in a T-shaped cross section, and an inner edge portion of the pull guide portion 11 is formed with a slope, thereby providing a guide surface 12. A holding surface 14 for holding the handle 7 in a horizontal state in sliding contact with the front end of each L-shaped link 8 formed in the handle 7 is formed at the base end of the guide surface 12, thereby firmly holding the handle 7 and preventing the handle 7 from being forwardly removed from the inside of the U-shaped guide bar 10. Meanwhile, the guide surface 12, which is a slope in fig. 7, may be a curved surface as shown in fig. 8. The curved guide surface 12 is formed such that: which gradually expands from the end of the upper or lower member 37, 38 towards the front member 39.

By providing such a guide surface 12 in the handle guide portion 11, even if the upper stopper 4 mounted on the lock link 1 has a conventional shape, the upper stopper 4 is easily guided and opened to the left and right by the guide surface 12 provided in the handle guide portion 11 when a force is applied to the handle guide portion 11 in the direction indicated by the arrow in fig. 9. As a result, the pull-rotating type slider can be smoothly started. Meanwhile, the fulcrum of the pulling operation of the pull handle 7 in the closing direction of the pull handle rotation type slider 6 is indicated by point P in the drawing.

According to the second embodiment of the starting mechanism, even if the guide surface 12 is formed by cutting out a part of the front part 39 of the U-shaped guide lever 10 provided on the periphery of the body 9, for example, only a part which is brought into sliding contact with the upper stopper 4 mounted on the lock chain 1 is cut out to define a slope or a curved surface as shown in fig. 10, the pull-turn type slide head 6 can be smoothly started.

According to the third embodiment of the starting mechanism, as shown in fig. 11, the guide surface 12 for the upper stopper is formed by cutting off the inner edge portion of the pull guide portion 11 in the front part 39 of the U-shaped guide lever 10 as shown in fig. 11, thereby defining a slope or an arc. Further, in the upper stopper 4 mounted on the lock chain 1, a guide portion 35 for the U-shaped guide bar 10 is formed by cutting off a corner portion contacting with the handle guide portion 11 of the U-shaped guide bar 10 in the handle turning type slide head 6. As a result, the pull-rotating type slider 6 can be smoothly actuated by the sliding contact between the guide surface 12 and the guide portion 35.

According to the fourth embodiment of the starting mechanism, as shown in fig. 12, the upper member 37, the lower member 38 and the front member 39 of the U-shaped guide bar 10 in the pull-turn type slide head 6 are formed to have a conventional shape with an inner surface forming a right angle. The corner of the upper stopper 4 mounted on the lock chain 1, which contacts the handle guide portion 11 of the U-shaped guide bar 10, is cut into a wide slope or arc protruding outward from the outer edge of the handle guide portion 11, thereby forming a guide portion 35 for the U-shaped guide bar 10. As a result, the handle-rotation type slider 6 can be smoothly started.

As described above, the slide fastener of the present invention has various kinds of actuating mechanisms. Therefore, the conventional use condition is of course available, and even if the end of the lock chain 1 is closed due to the use as shown in fig. 3, the pull-rotating type slider 6 can be smoothly actuated, and further, it can be easily changed to a reversible slide fastener.

Claims (7)

1. A slide fastener with a pull-turn type slider (6) for opening or closing a fastener chain (1) and having guide bars (10) continuously projecting from the top, front and bottom surfaces of a body (9) thereof, characterized in that at least one of the pull-turn type slider (6) and an upper stopper (4) includes a guide surface (12, 35), the guide surface (12, 35) serving to guide the upper stopper (4) and the guide bar (10) held in contact with each other when the fastener chain is closed, so that sliding contact and separation between the upper stopper (4) and the guide bar (10) are achieved when the fastener chain is separated.

2. A slide fastener according to claim 1, wherein the left and right end portions of the fastener chain (1) on the side of the fastener chain (1) to which the upper stopper (4) is attached are disposed in such a manner that: the ends are adjacent to each other.

3. A slide fastener according to claim 1, wherein the pull-rotary type slider (6) has a pull guide portion (11) with a T-shaped section continuing along the guide bar (10), and the pull guide portion (11) has a guide surface (12) for the upper stopper (4), the guide surface (12) forming an arc or a slope at its inner edge.

4. Slide fastener according to claim 1, wherein the upper stop (4) comprises a guide surface (35) for the guide bar (10), the guide surface (35) forming a curved or bevelled surface at the corner of its outer edge in contact with the guide bar (10).

5. A slide fastener according to claim 3, wherein said guide surface (12) for the upper stop (4) is formed on the inner edge of the pull guide portion (11) located on the front face of the body (9).

6. A slide fastener according to claim 3, wherein said guide surface (12) for the upper stopper (4) is formed on an inner edge of the handle guide portion (11) provided on a front face of the body (9) which is in sliding contact with the upper stopper (4).

7. A slide fastener according to claim 3, wherein said guide surface (12) for the upper stopper (4) has a horizontal holding surface (14) at a base end thereof, the holding surface (14) being in sliding contact with the coupling member (8) of the slider (7).