CN110833239B - Reverse opening type slide fastener - Google Patents

Abstract

The present invention provides a reverse opening type slide fastener with a separable bottom end stop, including an insert pin, a box pin, a first slider and a second slider, and a stop. The insert pin has a first surface, a second surface parallel to the first surface, and an inner side surface connecting the first surface and the second surface. The first engagement guide portion projects laterally from the box pin toward the insertion pin, providing an upward facing lateral face. A second engagement portion projects laterally from the insert pin toward the box pin, and engages the upwardly facing lateral face of the box pin when the box pin and insert pin are inserted into the second slider. A groove extends transversely in the insert pin adjacent the second engagement portion for receiving the first engagement guide of the box pin when the box pin and the insert pin are inserted into the second slider. The groove extends from the first surface to the second surface of the insert pin and opens on the first surface and the second surface.

Description

Reverse opening zipper

technical field

The present invention relates to a reverse opening type slide fastener.

Background technique

A zipper typically consists of a pair of straps lying flat, each strap having an inner edge that is the edge of each strap that is closest to the equivalent edge of the other strap. On these respective inner edges, the elements are connected in such a way as to ensure that the elements are forced to stagger each other when the edges are brought close to each other by the action of the sliders on the individual elements. That is, elements from the first belt will be releasably forced into the space between two cooperating adjacent elements on the second belt.

Although the present invention is not specifically contemplated for use in jackets, for a better understanding of the prior art and problems associated therewith, the following description refers to a jacket.

The slide fastener involved in the present invention includes two sliders, namely, a first upper slider and a second lower slider. Both sliders can move along the zipper in the same direction of motion, referred to herein as "longitudinal". The first and second sliders face in opposite directions so that when one of the sliders is moved towards one of the two opposite ends of the zipper, it will force the elements to engage or cross each other, thereby closing the zipper. When the other slider is moved towards the same end of the zipper, it will cause the elements to loosen or disengage, opening the zipper. In this case, the terms "front" or "forward" should be interpreted with reference to each slider, meaning that when either slider is pulled in the "front" or "forward" direction along the element, the zipper closure. Conversely, when either slider is pulled in a "reverse" or "backward" direction along the element, the zipper opens. The forward direction of the movement of one slider corresponds to the backward direction of the other slider. Considering the condition of the zipper on a garment such as a jacket on the wearer, the opposite ends of the zipper are generally defined as the "top" end and the "bottom" end. In addition, a direction that spans the front and rear surfaces of the fastener stringer and is perpendicular to the longitudinal direction is defined as a "lateral" direction or a "width" direction. The third direction, perpendicular to the longitudinal and transverse directions, is defined as the "thickness" direction or the "height" direction. The terms "upper" and "lower" should be construed herein to refer to the height direction.

The zipper on the front of the jacket needs to be completely separated into two different fastener tapes when opened so that the wearer's body can fit through the gap between the fastener tapes. However, unless the slider has a permanently attached locking mechanism, the slider will fall off the fastener tape to which it is attached. Therefore, there is a need for a stop mechanism to prevent the slider from moving beyond the ends of the dentition. This mechanism is required for the top and bottom of the zipper.

Additionally, if the zipper does not have any detent mechanism, when the zipper is in the closed position, if a separation force is applied by grasping the ends of each fastener tape and pulling them apart in the opposite direction, there is no way to prevent the teeth from disengaging.

To prevent the teeth from disengaging, one option is to provide a so-called box pin arrangement, wherein the first of the two fastener tapes has a pin-shaped protrusion extending along the fastener tape away from the teeth. This protrusion is designed to pass through one side of the Y-shaped channel provided by the slider. On the other hand, the second fastener tape begins with a similar pin shape extending along the fastener tape, but attached to the second fastener tape is a container ("box") for the first fastener tape a pin which is inserted into the container and thus holds the engagement chain in place once the slider is moved along it. This type of zipper is called an "open end" because the bottom end can be opened this way.

According to the preamble of claim 1, EP2050349B1 discloses a reverse opening type zipper having an open bottom end.

After trying to make a smaller size zipper with the design of EP2050349B1, it has been found that the pins, gates and cavities of the pins are so small that the molten metal does not flow as expected. In some cases, the protrusion on the insert pin does not fit correctly in the groove of the box pin. Alternatively, the protrusion may otherwise remain locked in the groove, especially if one of the pins rotates relative to the other. The protrusions also turned out to be rather weak when the zipper was made on a smaller scale.

SUMMARY OF THE INVENTION

The present invention relates to a reverse opening type slide fastener, in particular having an open bottom end.

According to one aspect, the present invention provides a zipper stopper. The reverse opening type slide fastener includes a box pin, an insertion pin, a first slider and a second slider. The insertion pins are provided continuously from the bottom end of the first element row provided on the side edge of the first fastener stringer. The box pins are provided continuously from the bottom end of the second element row provided on the side edge of the second fastener stringer. The insertion pin has a first surface, a second surface parallel to the first surface, and a side surface connecting the upper surface and the lower surface. The first slider can open the zipper upward, and the second slider can open the zipper in the opposite direction. A stopper protruding from the end of the box pin prevents the pull-down head from slipping off. The first engagement guide portion protrudes laterally from the box pin toward the insertion pin, and has an upwardly facing lateral surface. A second engaging portion protrudes laterally from the insertion pin toward the box pin and has a downwardly facing engagement surface that engages when the box pin and the insertion pin are inserted into the second slider. engage or abut the upward facing lateral surface of the box pin. A groove is formed that extends laterally within the insert pin adjacent the second engagement portion. The groove serves to accommodate the first engagement guide of the box pin when the box pin and the insertion pin are inserted into the second slider. The groove extends from the first surface to the second surface of the insertion pin and opens on the first surface and the second surface.

Due to the above arrangement, the grooves hold the pins only in one direction, namely in the longitudinal direction of the zipper. However, this ensures that the box pin has the greater strength needed to resist lateral forces, while lower vertical forces can be applied to the zipper due to the tighter presence of the slider. Due to this design, the weakness of protrusions and grooves existing in small and medium-sized zippers in the prior art is also overcome.

Preferably, the first engagement guide portion may have a vertical thickness that is substantially the same size as the vertical thickness of the box pin.

According to another aspect, the second engaging portion may have a vertical thickness that is substantially the same size as the vertical thickness of the insertion pin.

Still preferably, the side surface has an inclined surface extending from the lower end of the groove to the lower free end of the insertion pin.

According to yet another aspect, the insertion pin is connected to the corresponding core wire of the fastener stringer by two notches, wherein the notch near the free end of the insertion pin is smaller than the other notch.

Preferably, the lower free end of the insertion pin is within or above the lower edge of the zipper string. Because the insert pin may be small, it is sharper, so for safety reasons it is best if the insert pin is shorter than the box pin and when the pin is locked inside the slider, the insert pin is not Extends beyond the end of the strap or beyond the end of the slider to prevent damage or injury to the item to which it is attached or the user of the zipper.

In addition, the groove may form a through hole extending from the lower surface to the upper surface of the insertion pin.

Description of drawings

Fig. 1 is a front view of a reverse opening type slide fastener with an intermediate portion omitted.

Figure 2 is a cross-sectional perspective view of the bottom end of the zipper string with box pins.

Figure 3 is a cross-sectional perspective view of the bottom end of the zipper string with insertion pins.

4A is a rear view of the bottom end of the zipper string with the box pins of FIG. 2 .

4B is a side view of the bottom end of the zipper string with the box pin of FIG. 2 .

4C is a front view of the bottom end of the zipper string with the box pin of FIG. 2 .

FIG. 5A is a front view of the bottom end of the fastener stringer with the insertion pin of FIG. 3 .

5B is a side view of the bottom end of the fastener stringer with the insertion pin of FIG. 3 .

5C is a rear view of the bottom end of the fastener stringer with the insertion pin of FIG. 3 .

FIG. 6 is an enlarged cross-sectional view taken along line VI-VI of FIG. 5C .

Fig. 7 is a view of the lower part of the slide fastener of Fig. 1 , with the cross section of the second slider located at the lowest position.

Detailed ways

The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

Referring first to FIG. 1, a reverse opening type zipper 10 is an opening/closing device that can open or close a first or right side panel and a second or left side panel of, for example, a jacket or jacket. The zipper 10 includes a first or right zipper string 16, a second or left zipper string 17, first and second zipper strings disposed along opposite edges of the first zipper string 16 and the second zipper string 17, respectively. Two core threads 14 , and the first element row 12 along the first fastener stringer 16 and the second fastener element row 13 along the second fastener stringer 17 . The plurality of fastener elements 12a, 13a are arranged in a row at predetermined intervals so as to sandwich each core wire 14. As shown in FIG.

The slide fastener 10 includes a first slider 50 and a second slider 60 .

The first slider 50 allows the first element row 12 and the second element row 13 to pass through so that the zipper is opened in the rearward direction, downward in FIG. 1 . The second slider 60 causes the zipper to be opened in the opposite direction, upward in FIG. 1 .

Alternatively, the first slider 50 may be referred to as an upper slider, and the second slider 60 may be referred to as a lower slider.

The sliders 50, 60 may be of conventional design. Each slider 50, 60 may include an upper wing and a lower wing (not shown), preferably of the same size and positioned such that the upper wing covers the entire lower wing, the upper and lower wings are connected to the upper wing by connecting posts The front and center of each of the lower surface of the wing and the upper surface of the lower wing, thereby connecting the upper and lower wings together. Along at least a portion of the lateral edge of at least one of the upper or lower wings of each slider is a flange, also referred to as a rail, that protrudes toward the opposite wing. When both wings of the slider include flanges, the gap between them is greater than the thickness of the strip, and when only one wing of the slider includes a flange, the gap between the opposite wing and each flange is The gap will be greater than the thickness of the belt in the height direction.

The combination of the guide rails forms a rear opening at the rear end of each slider, the rear end being opposite to the head end of the fixed connection column, and two tooth foot openings are formed at the head end, each tooth foot opening is formed at the connection column and the head end. between the corresponding flanges. The mouths are the entry and exit endpoints of the Y-shaped space within the slider, and they provide access to the fastener elements at the edge of each strip. When the slider is pulled along the fastener elements in the forward direction, the separated left and right side fastener elements are introduced into the element foot openings and forced to cross so as to be connected to each other, and are discharged from the rear opening in a coupled state. On the contrary, when the slider moves backwards or reversely, the coupling elements on the left and right sides are introduced into the rear opening, and are released in the separated state to open the zipper. In the exemplary embodiment shown, the rear opening of the upper slider 50 and the rear opening of the lower slider 60 are arranged such that the rear openings are opposite to each other.

The top end stopper 18 is fixed to each corresponding core wire 14 above the first element row 12 and the second element row 13 to prevent the first slider 50 from sliding out of the first element row 12 and the second chain Dentition 13.

A reinforcement film 24 made of a resin film or the like may be adhered to the front and rear sides of the bottom ends of one or both of the fastener stringers 16 , 17 .

The box pin 40 is continuously provided on the side edge of the second fastener stringer 17 from the bottom end of the second fastener element row 13 . The box pin 40 is preformed by die casting. The box pin 40 is made of metal. The box pins 40 , preferably preformed by die-casting, are secured by clamping in order to clamp the core wire 14 and, in this example, also the reinforcement membrane 24 .

A hook stopper 46 protrudes laterally from the bottom end of the box pin 40 . When the second slider 60 is lowered to the lowermost position, the hook-shaped stopper 46 comes into contact with the foot mouth portion of the second slider 60, such as on a flange, to prevent the second slider 60 from sliding further beyond its lowermost position .

According to the exemplary embodiment shown in the drawings, the stopper 46 protrudes laterally from the bottom end of the box pin 40 in an outward direction, the outward direction being perpendicular to the longitudinal direction, in order to engage the foot mouth of the second slider 60 .

The shape of the stopper 46 according to the present invention is not limited to the shape of the stopper 46 shown in the drawings. Alternatively, the stopper protrudes from the bottom end of the box pin in the direction toward the front or back of the zipper so that the stopper can contact the end face of the front or rear wing of the puller 60 to prevent the puller from sliding out.

The box pin 40 includes a top surface 40a and a bottom surface 40b opposite to the top surface 40a, and inner and outer surfaces 40c and 40d connecting the top surface 40a and the bottom surface 40b of the box pin 40 .

The second fastener stringer 17 clamped by the box pin 40 extends from a groove formed on a part of the outer side surface of the box pin 40 .

The inner side 40c of the box pin 40 is disposed opposite the outer side 40d of the box pin 40 and provides a laterally protruding first engagement guide 42 (FIG. 2). In other words, the first engagement guide portion 42 protrudes outward from the inner side surface 40 c of the box pin 40 .

The first engagement guide portion 42 is formed in a wedge shape. The first engaging guide portion 42 includes an upper surface 42a on the same plane as the top surface 40a of the box pin 40, and a lower surface 42b on the same plane as the bottom surface 40b of the box pin 40, facing the slider and connecting the first engaging guide portion The upper surface 42a and the transverse surface 44 of the lower surface 42b of 42, and the inclined guide surface 43 connecting the upper surface 42a, the lower surface 42b and the transverse surface 44.

Box pins 40 are provided at the ends of a row of elements on the second fastener tape, with transverse faces 44 facing the final elements 13b of the row. The inclined guide surface 43 is an inclined surface formed so that the size of the first engagement guide portion 42 is gradually reduced toward the end of the box pin 40 , and is applied to the connecting post 66 ( FIG. 7 ) formed inside the second slider 60 . Guided so as to facilitate disengagement between the first element row 12 and the second element row 13 . The first engagement guide portion 42 is engaged with the second engagement portion 34 of the insertion pin 30 described later.

Preferably, as shown in FIG. 4B , the wedge-shaped first engagement guide portion 42 has a vertical thickness A that is substantially the same dimension as the vertical thickness B of the box pin 40 at its thickest point.

The insertion pin 30 is continuously provided on the side edge of the first fastener stringer 16 from the bottom end of the first fastener element row 12 . The insertion pin 30 is made of metal. Preferably, the insert pin 30 is preformed by die casting. The insertion pin 30 is fixed by clamping to clamp the core wire 14 and, in this example, also the reinforcement film 24 .

The insertion pin 30 includes a top surface 31 and a bottom surface 35 provided opposite to the top surface 31 , and an inner side surface 33 and an outer side surface 33 d provided opposite to the inner side surface 33 .

To avoid confusion with the top and bottom surfaces of the box pin 40 , the top surface 31 of the insert pin 30 will hereinafter be referred to as the first surface 31 and the bottom surface 35 of the insert pin 30 will be referred to as the second surface 35 .

The first surface 31 and the second surface 35 are preferably flat. The second surface 35 is parallel to the first surface 31 .

The first surface 31 and the second surface 35 are located on opposite sides of the insertion pin 30 in the height or thickness direction.

Preferably, the first surface 31 and the second surface 35 are substantially flat as they are intended to slide within the element guide channels defined between the upper and lower wings of the second slider 60 . In particular, the first surface 31 and the second surface 35 are used to contact the inner flat and parallel surfaces of the upper and lower wings of the second slider 60 .

The first fastener stringer 16 clamped by the insertion pin 30 extends from a groove formed on a part of the outer side surface of the insertion pin 30 .

The inner side surface 33 of the insertion pin 30 is disposed opposite to the outer side surface 33d of the insertion pin 30 and is opposed to the inner side surface 40c of the box-shaped pin 40 when the insertion pin 30 is connected to the box-shaped pin 40 .

The second engagement portion 34 of the insert pin 30 protrudes laterally toward the box pin 40 from the region of the insert pin 30 closest to the row of elements on the first fastener tape, and has an engagement surface 37 facing away from the slider (FIG. 5A). , 5C). When the box pin 40 and the insert pin 30 are inserted into the second slider 60, the downward facing engaging surface 37 of the second engaging portion 34 engages the lateral surface 44 of the wedge-shaped first guide portion 42 of the box pin 40 (FIG. 4 ) to join.

The inner side surface 33 of the insert pin 30 provides a first inclined side surface 33a facing and opposite to the inner side surface 40c of the box pin 40 . The first inclined side surface 33a includes a curve 33e from the middle position of the inner side surface 33 towards the lower free end 39 of the insertion pin 30, which curve 33E is curved in a lateral direction away from the insertion pin 30, the first inclined side surface 33a serves as a guide The surface is used to guide the relative sliding of the connecting post 66 ( FIG. 7 ) in the second slider 60 .

The first surface 31 and the first inclined side surface 33a are connected by the second inclined surface 33b.

The second surface 35 and the first inclined side surface 33a are connected by the third inclined surface 33c.

In some embodiments, the first inclined side surface 33a may be a curved surface, in which case the inner side surface 33 will consist of only the first inclined surface 33a.

The present invention includes other embodiments known to the skilled person that do not include inclined side surfaces 33b and/or 33c.

In the embodiment in which the slider has a locking function with a pawl or the like, the second and third inclined surfaces 33b, 33c are inclined in respective up-down directions away from the first inclined side surface 33a, the inclined surfaces 33b and 33c used as a guide.

The widths of the second and third inclined surfaces 33b, 33c increase as they approach the free end 39.

Adjacent to the second engagement portion 34, formed in the inner side surface 33 of the insertion pin 30 is a groove 36 extending toward the fastener stringer. The groove 36 extends laterally in the insert pin 30 for receiving the first engagement guide 42 of the box pin 40 when the box pin and the insert pin are inserted into the second slider 60 .

The groove 36 extends from the second surface 35 of the insertion pin 30 to the first surface 31 and opens on the first surface 31 and the second surface 35 .

The grooves 36 may form through holes 38 . As shown in FIG. 3 , the core wire 14 is visible through the hole 38 . Preferably, the groove 36 is provided between the second surface 35 and the first surface 31 of the insert pin 30 .

According to a preferred embodiment, the groove 36 is formed between the second engaging portion 34 and the first inclined surface 33a. Preferably, the first, second and third inclined side surfaces 33a, 33b, 33c extend from the bottom end of the groove 36 to the lower free end 39 of the insertion pin 30. This angled arrangement facilitates and improves insertion of the insertion pin into the slider.

Preferably, as shown in FIG. 5B , the second engaging portion 34 has a vertical thickness C that is substantially the same dimension as the vertical thickness D of the insertion pin 30 at its thickest point.

As shown in FIGS. 4A , 5C and 6 , the insert pin 30 and the box pin 40 are each connected to the corresponding core wires 14 , 14 of each corresponding zipper fastener stringer through two corresponding notches 51 , 52 and 53 , 54 . . Advantageously, in view of the curved shape of the inclined surfaces 33a, 33b, 33c (FIG. 5C), the notches 53, 54 are each formed on the second surface 35 which is flat. The notch 54 near the free end 39 of the insert pin 30 may be smaller than the other notch 53 in the insert pin. In particular, the recess 54 close to the free end 39 of the insertion pin 30 is formed on the same longitudinal axis VI. The widths of the notches 53, 54 may be the same, but the length dimensions are preferably different.

Next, a state in which the second slider 60 is pulled down from the state shown in FIG. 1 to the lowest position will be described with reference to the cross-sectional view shown in FIG. 7 . When the second slider 60 is pulled down, the first and second element rows 12, 13 in the separated state are connected to each other and disengaged in the connected state. If the second slider 60 is further pulled down, the box pin 40 and the insertion pin 30 are inserted from the foot opening of the second slider 60, and the stopper 46 formed at the end of the bottom end of the box pin 40 is in contact with the first The teeth, feet and mouths of the two sliders 60 are in contact, so that the movement of the sliders is stopped. This position is the lowest position of the second slider 60 .

In this arrangement, the first element row 12 and the second element row 13 are connected to each other at a portion between the rear opening of the second slider 60 and the rear opening of the first slider 50 . As shown in FIG. 7 , in the preferred embodiment, the lower free end 39 of the insertion pin is within or above the lower edge 19 of the first zipper string 16 by a distance "e". This arrangement prevents the user's body or fingers from being scratched by the end of the insertion pin. It also prevents fabric damage from insert pins.

At the lowermost position of the second slider 60 , the first engagement guide 42 protruding from the box pin 40 is received in the groove 36 formed in the insertion pin 30 .

It will be appreciated that the above-described zipper provides a simplified and smoother design with fewer serrations than in the prior art, which is particularly suitable for small zippers.

Various aspects and embodiments of the reverse opening type zipper have been described. It should be understood that each aspect and embodiment may be combined with any other aspect or embodiment. Furthermore, the invention is not limited to the described embodiments, but may vary within the scope of the appended patent claims and their legal equivalents. For example, in the embodiment shown in the drawings, at the end of the second slider, there is only a bottom end stop at one end. The invention should not hinder the possibility of having such stops at both ends of the zipper.

Claims (7)

1. A reverse opening type zipper with a separable bottom end stop, comprising: An insertion pin (30) provided continuously from the bottom end of the first element row (12) provided on the side edge of the first fastener stringer (16), the insertion pin (30) having a first surface ( 31), a second surface (35) parallel to the first surface (31), and an inner side surface (33) connecting the first surface (31) and the second surface (35); a box pin (40) continuously provided from the bottom end of the second element row (13) provided on the side edge of the second fastener stringer (17); a first slider (50) for opening the zipper upwards, and a second slider (60) for opening the zipper in the opposite direction; A stopper (46) for preventing the second slider (60) from slipping off the second element row (13), the stopper protruding from the end of the box pin (40) ; a first engagement guide (42) protruding laterally from the box pin (40) towards the insert pin (30) and having an upwardly facing lateral face (44); A second engagement portion (34) protrudes laterally from the insertion pin (30) towards the box pin (40) and has a downwardly facing engagement surface (37) when the box pin and the insertion When the pin is inserted into the second slider (60), the engagement surface (37) engages the upward facing lateral surface (44) of the box pin (40); and a groove (36) extending laterally in the insert pin (30) adjacent to the second engagement portion (34) for use when the box pin and the insert pin are inserted into the second The first engagement guide portion (42) of the box pin (40) is accommodated when the slider (60) is pulled, The zipper is characterized in that the groove (36) extends from the first surface (31) to the second surface (35), and is located between the first surface (31) and the second surface (35) upper opening, The inner side surface (33) has a first inclined surface (33a) extending from the lower end of the groove (36) to the free end (39) of the insertion pin (30), The first surface (31) and the first inclined surface (33a) pass through a second inclined surface extending from the lower end of the groove (36) to the free end (39) of the insertion pin (30). (33b) connect, The width of the second inclined surface (33b) increases as the second inclined surface (33b) approaches the free end (39). 2. The zipper according to claim 1, wherein the first engagement guide (42) has a vertical thickness (A) that is substantially the same size as the box at its thickest point The vertical thickness (B) of the pin (40) is the same. 3. The zipper according to claim 1, wherein the second engaging portion (34) has a vertical thickness (C) that is substantially the same size as the insertion pin at its thickest point The vertical thickness (D) of (30) is the same. 4. The zipper according to claim 2, wherein the second engaging portion (34) has a vertical thickness (C), the vertical thickness (C) having a dimension at its thickest point substantially the same as that of the insertion pin The vertical thickness (D) of (30) is the same. 5. The zipper according to any one of claims 1 to 4, wherein the insertion pin (30) is connected to the corresponding core of the zipper string using two notches (53, 54) Line (14), wherein said notch (54) near the free end (39) of said insert pin (30) is smaller than the other notch (53). 6. The zipper according to any one of claims 1 to 4, wherein the free end (39) of the insertion pin is held in a position formed by the lower edge (19) of the first zipper string (16) within or above said lower edge (19) by a given distance (e). 7. The slide fastener according to any one of claims 1 to 4, wherein the groove (36) forms a through hole (38) provided in the insertion pin (30) ) between said second surface (35) and said first surface (31).

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