CROSS-REFERENCE TO RELATED APPLICATION
This application claims the priority benefit of China application serial no. 202311821995.3, filed on Dec. 26, 2023. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
BACKGROUND
Technical Field
The disclosure relates to the technology of the fastener field, and in particular relates to a slider and a fastener.
Description of Related Art
A conventional fastener usually includes a fastener stringer comprising a pair of fastener stringers, each fastener stringer consisting of a strip-shaped fastener tape and multiple element columns arranged thereon. The fastener also includes a slider installed on a fastener stringer to open or close the element columns by sliding. In addition, a tab pull may also be disposed on the slider according to requirements. When the slider is installed on the fastener stringer, the element columns on the fastener stringer passes through the element passage formed between the lower blade and the upper blade of the slider. During the sliding process of the slider, the fastener stringers are opened or closed under the guidance of the guide pillar of the slider. During this process, the inner edge of the fastener tape easily contacts the side of the guide pillar of the slider and causes friction, causing the fastener tape to be easily damaged. Furthermore, when a waterproof layer is disposed on the surface of the fastener tape such that the fastener tape becomes thicker, the slider experiences increased sliding resistance during the sliding process, thereby impeding smooth opening and closing operations. Therefore, it is necessary to improve the structure of the slider and fastener.
SUMMARY
A slider and a fastener that can improve the smoothness of the slider when sliding on the fastener stringer, thereby reducing damage to the fastener stringer and providing good operability, are provided in the disclosure.
A slider is provided in the disclosure, in which the slider is adapted to be installed on a pair of fastener stringers to form a fastener, and including a lower blade; an upper blade oppositely disposed above the lower blade; a guide pillar disposed between the lower blade and the upper blade and connecting a front end portion the lower blade and a front end portion of the upper blade in a front-rear direction; and a pair of flanges respectively disposed on two opposite lateral edges of one of the lower blade and the upper blade on a width direction and extending toward another one of the lower blade and the upper blade. An inner surface of the another one of the lower blade and the upper blade and an end surface of the flanges are opposite to each other and separated by a gap. A first groove is provided on a side surface of the guide pillar, and the first groove corresponds to the gap in an up-down direction.
In an embodiment of the disclosure, the slider further includes a tab pull installing lug disposed above the upper blade. The first groove is disposed at an end of the guide pillar close to the tab pull installing lug.
In an embodiment of the disclosure, the first groove is disposed on two opposite side surfaces of the guide pillar in the width direction.
In an embodiment of the disclosure, the first groove is disposed on a rear side surface of the guide pillar in the front-rear direction.
In an embodiment of the disclosure, an inner surface of the upper blade facing the lower blade is provided with a second groove, and the second groove is located at a position on the inner surface of the upper blade close to the guide pillar.
In an embodiment of the disclosure, a front end edge of a front end portion of the lower blade is further rearward than a front end edge of the front end portion of the upper blade in the front-rear direction. The guide pillar connects the front end edge of the lower blade and the front end portion of the upper blade, and is separated from the front end edge of the upper blade by a distance. A retreat portion is formed between a front end side of the guide pillar and the front end edge of the upper blade.
In an embodiment of the disclosure, the lower blade has a front end edge located at the front end portion, and a pair of shoulder opening lateral edges respectively extending rearward from the front end edge on opposite sides in the width direction, in which the front end edge is configured as an arc shape that protrudes outward, and the shoulder opening lateral edges are configured as inwardly concave arc shapes, while avoidance portions are formed on opposite sides of the lower blade in the width direction.
In an embodiment of the disclosure, the upper blade has a front end edge located at the front end portion, and a pair of shoulder opening lateral edges respectively extending rearward from the front end edge on opposite sides in the width direction, in which the front end edge is configured as an arc shape that protrudes outward, and the shoulder opening lateral edges are configured as arc shapes that protrude outward.
In an embodiment of the disclosure, the upper blade has a front end edge located at the front end portion, a pair of shoulder opening lateral edges respectively extending rearward from the front end edge on opposite sides in the width direction, and a rear opening lateral edge that is further rearward than the shoulder opening lateral edges in the front-to-back direction. The front end edge and the rear opening lateral edge are each configured in a linear shape extending in the width direction, and the pair of the shoulder mouth lateral edges are configured in a linear shape extending in the front-rear direction.
A fastener is also included in the disclosure, including a pair of fastener stringers; and the slider installed on the pair of fastener stringers to open or close the pair of fastener stringers. The fastener stringers include a fastener tape and an element column coil installed on a first surface of the fastener tape. A boundary between the first groove and a side surface of the guide pillar forms a step portion, and the step portion is located between a second surface of the fastener tape opposite to the first surface and an end surface of the element column coil opposite to the fastener tape.
Based on the above, in the slider of this embodiment, one of the lower blade and the upper blade is provided with a pair of flanges on two opposite lateral edges in the width direction. The inner surface of the other one of the lower blade and the upper blade and the end surface of the flanges are opposite to each other and separated by a gap. The side surface of the guide pillar is provided with a first groove corresponding to the gap in the up-down direction. When the slider is installed on the fastener stringer to form the fastener, the outer edge of the fastener tape passes through the gap of the slider, and the inner edge of the fastener tape corresponds to the first groove provided on the side surface of the guide pillar of the slider. In this way, the arrangement of the first groove can reduce the friction between the inner edge of the fastener tape and the side surface of the guide pillar and reduce the sliding resistance of the slider on the fastener stringer. Accordingly, a slider and a fastener of the disclosure can improve the smoothness of the slider when sliding on the fastener stringer, thereby reducing damage to the fastener stringer and providing good operability, are provided in the disclosure.
In order to make the above-mentioned features and advantages of the disclosure comprehensible, embodiments accompanied with drawings are described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a three-dimensional schematic diagram of a slider according to an embodiment of the disclosure.
FIG. 2 is a three-dimensional schematic diagram of the slider shown in FIG. 1 from another viewing angle.
FIG. 3 is a front view schematic diagram of the slider shown in FIG. 1.
FIG. 4 is a side view schematic diagram of the slider shown in FIG. 1.
FIG. 5 is a three-dimensional schematic diagram of a fastener using the slider of FIG. 1 according to an embodiment of the disclosure.
FIG. 6 is a side view schematic diagram of the fastener shown in FIG. 5.
FIG. 7 is a back side schematic diagram of the fastener shown in FIG. 5.
FIG. 8 is a front side schematic diagram of the fastener shown in FIG. 5.
FIG. 9 is a side view schematic diagram of a double open tail fastener using two sliders of FIG. 1 according to another embodiment of the disclosure.
FIG. 10 is a three-dimensional schematic diagram of a first modification of the slider shown in FIG. 1.
FIG. 11 is a cross-sectional schematic diagram of the slider shown in FIG. 1 after cutting the guide pillar along the front-rear direction.
FIG. 12 is a side view schematic diagram of a second modification of the slider shown in FIG. 1.
FIG. 13 is a three-dimensional schematic diagram of a third modification of the slider shown in FIG. 1 from another viewing angle.
DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS
References of the exemplary embodiments of the disclosure are to be made in detail. Examples of the exemplary embodiments are illustrated in the drawings. FIG. 1 is a three-dimensional schematic diagram of a slider according to an embodiment of the disclosure. FIG. 2 is a three-dimensional schematic diagram of the slider shown in FIG. 1 from another viewing angle. FIG. 3 is a front view schematic diagram of the slider shown in FIG. 1. FIG. 4 is a side view schematic diagram of the slider shown in FIG. 1. FIG. 5 is a three-dimensional schematic diagram of a fastener using the slider of FIG. 1 according to an embodiment of the disclosure. FIG. 6 is a side view schematic diagram of the fastener shown in FIG. 5. FIG. 7 is a back side schematic diagram of the fastener shown in FIG. 5. FIG. 8 is a front side schematic diagram of the fastener shown in FIG. 5. FIG. 9 is a side view schematic diagram of a double open tail fastener using two sliders of FIG. 1 according to another embodiment of the disclosure. FIG. 10 is a three-dimensional schematic diagram of a first modification of the slider shown in FIG. 1. FIG. 11 is a cross-sectional schematic diagram of the slider shown in FIG. 1 after cutting the guide pillar along the front-rear direction. FIG. 12 is a side view schematic diagram of a second modification of the slider shown in FIG. 1. FIG. 13 is a three-dimensional schematic diagram of a third modification of the slider shown in FIG. 1 from another viewing angle. The specific structure of the slider 100, the applied fastener stringer 50, and the formed fastener 20 in one embodiment of the disclosure, as well as its modifications, will be described below with reference to FIS. 1 to FIG. 13. However, the disclosure is not limited thereto, and the disclosure may be adjusted according to requirements.
Referring to FIG. 1 to FIG. 5, in this embodiment, the slider 100 is adapted to be installed on a pair of fastener stringers 50 to form the fastener 20. The fastener 20 includes a pair of fastener stringers 50 and a slider 100. The slider 100 is installed on the pair of fastener stringers 50 to open or close the pair of fastener stringers 50. The fastener stringer 50 includes, for example, the fastener tape 52 and the element column coil 54 installed on a first surface 52a of the fastener tape 52 (as shown in FIG. 5). The second surface 52b of the fastener tape 52 opposite to the first surface 52a is not provided with the element column coil 54, and may be provided with a waterproof film or other laminating layer (not shown) as required. However, the disclosure does not limit whether the second surface 52b is provided with a laminating layer. Furthermore, although this embodiment is described by taking the fastener stringer 50 having the element column coil 54 as an example, the disclosure does not limit the types of fastener stringers 50 that the slider 100 may be applied to. The slider 100 may also be applied to fastener stringers with other types of element columns.
Specifically, in this embodiment, as shown in FIG. 1 to FIG. 4, the slider 100 includes a lower blade 110, an upper blade 120, a guide pillar 130, and a pair of flanges (e.g., the lower flange 140 described later). The lower blade 110 and the upper blade 120 are each configured as a plate-shaped member, and the upper blade 120 is oppositely disposed above the lower blade 110. The guide pillar 130 is disposed between the lower blade 110 and the upper blade 120 and connects the front end portions E1 of the lower blade 110 and the upper blade 120 in the front-rear direction (i.e., the length direction L). Accordingly, the rear end portions E2 of the lower wing 110 and the upper wing 120 in the front-rear direction (i.e., the length direction L) are configured in an open state. Accordingly, the slider 100 forms an element passage 102 for a pair of fastener stringers 50 to pass between the lower blade 110 and the upper blade 120 and on opposite sides of the guide pillar 130 in the left-right direction (i.e., the width direction W).
Furthermore, in this embodiment, as shown in FIG. 1 to FIG. 4, a pair of flanges (e.g., the lower flange 140) are respectively disposed on two opposite lateral edges of one of the lower blade 110 and the upper blade 120 (e.g., the lower blade 110) in the width direction W, and extend toward the other one of the lower blade 110 and the upper blade 120 (e.g., the upper blade 120). That is, in this embodiment, the flanges are lower flanges 140 disposed on two opposite lateral edges in the width direction W of the lower blade 110. Correspondingly, a pair of upper flanges 150 may also be disposed on the two opposite lateral edges in the width direction W of the upper blade 120 in this embodiment. The upper flange 150 and the aforementioned lower flange 140 are opposite to each other in the up-down direction (i.e., the thickness direction T). However, in other not-shown embodiments, only a pair of lower flanges 140 may be disposed on the lower blade 110, or only a pair of upper flanges 150 may be disposed on the upper blade 120. That is, one of either the lower blade 110 or the upper blade 120 is provided with a flange. Accordingly, a pair of flanges (e.g., the lower flange 140 and/or the upper flange 150) is located outside the aforementioned element passage 102, thereby the element column coils 54 of the pair of fastener stringers 50 may be restricted in the element passage 102, so that the slider 100 may open or close the element column coils 54 on the fastener stringers 50. However, the disclosure does not limit the number, position and arrangement of flanges, which may be adjusted according to requirements.
Furthermore, in this embodiment, as shown in FIG. 3 and FIG. 4, when the lower blade 110 and the upper blade 120 are each provided with a pair of flanges (i.e., the lower flanges 140 and the upper flanges 150), the end surface of the lower flange 140 on the lower blade 110 and the end surface of the upper flange 150 on the upper blade 120 are opposite to each other and separated by a gap G. That is, the end surfaces of the lower flange 140 and the upper flange 150 are separated from each other without contacting each other. The gap G refers to the space between the end surface of the lower flange 140 on the lower blade 110 and the end surface of the upper flange 150 on the upper blade 120. Therefore, when the slider 100 is installed to the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 6, the outer edges of the fastener tapes 52 of the pair of fastener stringers 50 may extend outward from the gap G, so that the slider 100 may slide on the fastener tape 52 of the fastener stringer 50 in a manner that allows for installation on the element column coil 54, thereby enabling the opening or closing of the element column coil 54. In the case where a pair of flanges (e.g., the lower flange 140) is provided only on one of the lower blade 110 and the upper blade 120 (e.g., the lower blade 110) (not shown), the inner surface of the other one of the lower blade 110 and the upper blade 120 (e.g., the upper blade 120) and the end surface of the flanges (e.g., the lower flange 140) are opposite to each other and separated by a gap G. However, the disclosure does not limit the arrangement of the flange and the position of the gap G, which may be adjusted according to requirements.
As an example, as shown in FIG. 3 and FIG. 4, the dimension (height) of the lower flange 140 in the up-down direction (i.e., the thickness direction T) is greater than the dimension (height) of the upper flange 150 in the up-down direction (i.e., the thickness direction T), so that the gap G is closer to the upper wing 120. In this way, when the slider 100 is installed on the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 6, the preferred installation method involves disposing the element column coil 54 on the fastener tape 52 (i.e., the first surface 52a) facing towards the lower blade 110, so that the element column coil 54 is restricted by the larger lower flange 140. In this case, the element column coil 54 is hidden at the inner side the fastener tape 52 (i.e., on the side opposite to the upper blade 120), so that the fastener 20 may be used as a hidden fastener. In the case where the lower flange 140 is provided only on the lower wing 110 (not shown), the preferred installation method similarly involves disposing the element column coil 54 on the fastener tape 52 (i.e., the first surface 52a) facing towards the lower blade 110, so that the element column coil 54 is restricted by the lower flange 140. Correspondingly, when the height of the lower flange 140 is less than the height of the upper flange 150 (not shown), or when the upper flange 120 is provided only on the upper flange 150 (not shown), the preferred installation method involves disposing the element column coil 54 on the fastener tape 52 (i.e., the first surface 52a) facing towards the upper blade 120, so that the element column coil 54 is restricted by the upper flange 150. However, the disclosure does not limit the position of the gap G and the relative position of the fastener stringer 50 when the slider 100 is installed, which may be adjusted according to requirements.
Furthermore, in this embodiment, as shown in FIG. 3 and FIG. 4, the first groove 132 is provided on the side surface of the guide pillar 130, and the first groove 132 corresponds to the gap G in the up-down direction (i.e., the thickness direction T). That is, when the slider 100 is viewed from the front or from the side, the height level of the first groove 132 in the up-down direction (i.e., the thickness direction T) is substantially the same as the height level of the gap G in the up-down direction (i.e., the thickness direction T). The first groove 132 forms a recess on the side surface of the guide pillar 130, so that the dimension of the portion of the guide pillar 130 where the first groove 132 is provided in the width direction W becomes smaller. In this way, when the slider 100 is installed on the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 6, the outer edges of the fastener tapes 52 of the pair of fastener stringers 50 extend outward through the gap G of the slider 100, and the inner edge of the fastener tape 52 correspond to the first groove 132 on the side surface of the guide pillar 130 of the slider 100.
Through the above arrangement, in the slider 100 of this embodiment, one of the lower blade 110 and the upper blade 120 (e.g., the lower blade 110) is provided with a pair of flanges (e.g., the lower flange 140) on two opposite lateral edges in the width direction W. The inner surface of the other one of the lower blade 110 and the upper blade 120 (e.g., the upper blade 120) and the end surface of the flanges (e.g., the lower flange 140) are opposite to each other and separated by a gap G. The side surface of the guide pillar 130 is provided with a first groove 132 corresponding to the gap G in the up-down direction (i.e., the thickness direction T). When the slider 100 is installed on the fastener stringer 50 to form the fastener 20, the outer edge of the fastener tape 52 passes through the gap G of the slider 100, and the inner edge of the fastener tape 52 corresponds to the first groove 132 provided on the side surface of the guide pillar 130 of the slider 100. In this way, the arrangement of the first groove 132 may reduce the friction between the inner edge of the fastener tape 52 and the side surface of the guide pillar 130 and reduce the sliding resistance of the slider 100 on the fastener stringer 50. Accordingly, the slider 100 and the fastener 20 may improve the smoothness of the slider 100 when sliding on the fastener stringer 50, thereby reducing damage to the fastener stringer 50 and providing good operability.
Furthermore, in this embodiment, as shown in FIG. 1 to FIG. 5, the slider 100 further includes a tab pull installing lug 160, and the tab pull installing lug 160 is disposed above the upper blade 120. Moreover, the first groove 132 is disposed at one end of the guide pillar 130 close to the tab pull installing lug 160 (i.e., one end close to the upper blade 120 in the thickness direction T). In this way, when the slider 100 is installed on the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 6, the slider 100 preferably uses the upper blade 120 provided with the tab pull installing lug 160 as the operating appearance surface. The fastener stringer 50 is installed in a manner such that the element column coil 54 (i.e., the first surface 52a) provided on the fastener tape 52 faces the lower blade 110, so that the element column coil 54 is hidden at the inner side the fastener tape 52 (i.e., on the side opposite to the upper blade 120), so that the fastener 20 may be used as a hidden fastener. At this time, the outer edge of the fastener tape 52 passes through the gap G close to the upper blade 120, and the inner edge of the fastener tape 52 corresponds to the first groove 132 close to the upper blade 120. In this way, during the sliding process of the slider 100 relative to the fastener stringer 50, the fastener tape 52 does not require significant bending in the up-down direction (i.e., the thickness direction T), thereby reducing the sliding resistance of the slider 100 on the fastener stringer 50. However, in other embodiments not shown, the tab pull installing lug 160 may also be omitted, and the lower wing 110 may be used as the operating appearance surface. The disclosure is not limited thereto, and the disclosure may be adjusted according to requirements.
In addition, in this embodiment, as shown in FIG. 3 to FIG. 6, the first groove 132 extends from the interface between the guide pillar 130 and the upper wing 120 toward the lower wing 110. In this way, the dimension (width) in the width direction W of the upper end portion of the guide pillar 130 close to the upper blade 120 is less than the dimension (width) in the width direction W of the lower end portion of the guide pillar 130 close to the lower blade 110, and the boundary between the first groove 132 and the side surface of the guide pillar 130 (e.g., the lower end surface of the first groove 132) forms a step portion 134. In this case, if the step portion 134 is located higher than the second surface 52b of the fastener tape 52 in the up-down direction (i.e., the thickness direction T), that is, if the dimension of the first groove 132 is too small such that the first groove 132 is located above the inner edge of the fastener tape 52, the inner edge of the fastener tape 52 contacts the side surface or the step portion 134 of the guide pillar 130. This contact may result in the fastener tape 52 being susceptible to damage due to friction. In particular, when a laminating layer (not shown) such as a waterproof film is provided on the second surface 52b of the fastener tape 52, the laminating layer is easily peeled off due to friction, and the problem of reduced waterproofness arises. Similarly, if the step portion 134 is located lower in the up-down direction (i.e., the thickness direction T) than the end surface (i.e., the lower end surface 54a) of the element column coil 54 opposite to the fastener tape 52, that is, if the dimension of the first groove 132 is too large such that the first groove 132 encompasses the fastener tape 52 and the element column coil 54, the side surface of the guide pillar 130 cannot effectively guide and restrict the element column coil 54, which may easily result in instability issues during the sliding of the slider 100.
Based on the above considerations, in this embodiment, the step portion 134 formed by the boundary between the first groove 132 and the side surface of the guide pillar 130 is further arranged corresponding to the positions of the fastener tape 52 and the element column coil 54 in the fastener stringer 50 used in the slider 100. As an example, as shown in FIG. 5 and FIG. 6, the step portion 134 is located between (i.e., within the range R) the second surface 52b of the fastener tape 52 opposite to the first surface 52a and the end surface (i.e., lower end surface 54a) of the element column coil 54 opposite to the fastener tape 52. It may be seen from this that when the first groove 132 extends from the interface between the guide pillar 130 and the upper blade 120 toward the lower blade 110, the aforementioned design of the lower end portion of the first groove 132, that is, the step portion 134, may eliminate the situation that the dimension of the first groove 132 is too small or too large. In this way, the first groove 132 may function better (with reduced friction and sliding resistance) through the above arrangement. Accordingly, the slider 100 and the fastener 20 may reduce damage to the fastener stringer 50 and provide good operability. However, in other embodiments not shown, the first groove 132 may also be disposed at an end of the guide pillar 130 close to the lower blade 110 in the thickness direction T, or may also be disposed at a middle portion of the guide pillar 130. The disclosure is not limited thereto, and the disclosure may be adjusted according to requirements.
In addition, in this embodiment, as shown in FIG. 2 and FIG. 7, the lower wing 110 has a front end edge 112 located at the front end portion E1, and a pair of shoulder opening lateral edges 114 respectively extending rearward from the front end edge 112 on opposite sides in the width direction W. The front end edge 112 is configured as an arc shape that protrudes outward, and the shoulder opening lateral edge 114 is configured as an inwardly concave arc shape. The shoulder opening lateral edges 114 form avoidance portions 116 on opposite sides of the lower wing 110 in the width direction W (as shown in FIG. 7). Through the above arrangement, when the slider 100 is installed on the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 7, the lower blade 110 of the slider 100 corresponds to the first surface 52a of the fastener tape 52 provided with the element column coil 54. The element column coil 54 of the fastener stringer 50 passes through the element passage 102 through the guidance of the guide pillar 130 of the slider 100. The element column coil 54 passes through the avoidance portion 116 formed by the shoulder opening lateral edge 114 of the lower blade 110 during the sliding process of the slider 100 relative to the fastener stringer 50. In this way, the avoidance portion 116 formed by the shoulder opening lateral edge 114 of the lower blade 110 may reduce the friction between the lower blade 110 and the lower end surface 54a of the element column coil 54, and reduce the sliding resistance of the slider 100 on the fastener stringer 50. Accordingly, the slider 100 and the fastener 20 may reduce damage to the fastener stringer 50 and provide good operability. However, the disclosure does not limit the shape of the lower blade 110 (i.e., does not limit the inclusion or exclusion of the avoidance portion 116), nor does it limit the slider 100 to only be applied to the fastener stringer 50 having the element column coil 54. The disclosure may be adjusted according to requirements.
In addition, in this embodiment, as shown in FIG. 1 and FIG. 8, the upper blade 120 has a front end edge 122 located at the front end portion E1, a pair of shoulder opening lateral edges 124 respectively extending rearward from the front end edge 122 on opposite sides in the width direction W, and a rear opening lateral edge 126 that is further rearward than the shoulder opening lateral edge 124 in the front-rear direction (i.e., the length direction L). The front end edge 122 and the rear opening lateral edge 126 are each configured in a linear shape extending in the width direction W, and the pair of shoulder opening lateral edges 124 are configured in a linear shape extending in the front-rear direction (i.e., the length direction L). Through the above arrangement, when the slider 100 is installed on the fastener stringer 50 to form the fastener 20, as shown in FIG. 5 and FIG. 8, the upper blade 120 of the slider 100 corresponds to the second surface 52b of the fastener tape 52 without the element column coil 54, thereby the substantially rectangular upper blade 120 may be in contact with the second surface 52b of the fastener tape 52 to increase the stability of the slider 100 when sliding relative to the fastener stringer 50. Furthermore, the front end edge 122 of the upper wing 120 of the slider 100 is parallel to the front end edge of the fastener tape 52 (extending in the width direction W), thereby when the fastener stringer 50 is closed by the slider 100, the front end edge 122 of the upper blade 120 and the front end edge of the fastener tape 52 correspond to each other and further overlap (as shown in FIG. 8), so that the gap between the slider 100 and the end portion of the fastener stringer 50 may be reduced, and the aesthetics of the slider 100 on the fastener stringer 50 with the upper blade 120 as the operating appearance surface may be improved.
Furthermore, in this embodiment, as shown in FIG. 4 and FIG. 9, the front end edge 112 of the front end portion E1 of the lower blade 110 is further rearward than the front end edge 122 of the front end portion E1 of the upper blade 120 in the front-rear direction (i.e., the length direction L). The guide pillar 130 connects the front end edge 112 of the lower blade 110 and the front end portion E1 of the upper blade 120, and is separated from the front end edge 122 of the upper blade 120 by a distance D. A retreat portion 136 is formed between the front end side of the guide pillar 130 and the front end edge 122 of the upper blade 120. Through the above arrangement, when two sliders 100 are installed on the fastener stringer 50 to form a double open tail fastener 20A, as shown in FIG. 4 and FIG. 9, the two sliders 100 are installed with the front end portions E1 facing each other, thereby when the fastener stringer 50 is closed by two sliders 100, the front end edges 112 of the lower blades 110 of the two sliders 100 abut each other and the front end edges 122 of the upper blades 120 abut each other, so that the gap between the two sliders 100 and the fastener stringer 50 may be reduced in the front-rear direction (i.e., the length direction L) and the up-down direction (i.e., the thickness direction T). In particular, when the upper blade 120 of the slider 100 has a front end edge 122 configured in a linear shape extending in the width direction W as shown in FIG. 8, the upper blades 120 of the two sliders 100 abut against each other with the linear front end edges 122, thereby the gap between the two sliders 100 and the fastener stringer 50 may be reduced in the width direction W and the front-rear direction (i.e., the length direction L), and the aesthetics of the slider 100 on the fastener stringer 50 with the upper blade 120 as the operating appearance surface may be improved. However, the disclosure does not limit the slider 100 to be only arranged in pairs. The slider 100 may also be arranged individually on the fastener stringer 50 as shown in FIG. 6. Additionally, as shown in FIG. 8, the gap between the slider 100 and the end portion of the fastener stringer 50 may be reduced. Moreover, the disclosure does not limit the inclusion or exclusion of the retreat portion 136, which may be adjusted according to requirements.
Correspondingly, in the first modification shown in FIG. 10, the slider 100A has a similar structural configuration to the aforementioned slider 100. The main difference is that the upper blade 120A of the slider 100A is different from the upper blade 120 of the aforementioned slider 100. For other parts (e.g., the lower blade 110, the guide pillar 130, the lower flange 140, the upper flange 150, the tab pull installing lug 160, and the first groove 132, etc.), reference may be made to the foregoing description, which is not repeated herein. Specifically, in the modification shown in FIG. 10, the upper blade 120A has a front end edge 122A located at the front end portion E1, and a pair of shoulder opening lateral edges 124A respectively extending rearward from the front end edge 122A on opposite sides in the width direction W. The front end edge 122A is configured as an arc shape that protrudes outward, and the shoulder opening lateral edge 124A is configured as an arc shape that protrudes outward. Through the above arrangement, when the slider 100A is installed on the fastener stringer 50 to form the fastener 20, the upper blade 120A of the slider 100A may contact the second surface 52b of the fastener tape 52 with a smaller area, thereby reducing friction of the slider 100A when sliding relative to the fastener stringer 50. It may be seen from this that the disclosure does not limit the shape of the upper blades 120 and 120A, which may be adjusted according to requirements. The slider 100A in the modification shown in FIG. 10 may also be provided with the retreat portion 136, and the slider 100A may also be arranged in pairs on the fastener stringer 50 to form a double open tail fastener 20A, thereby reducing the gap between the two sliders 100A and the fastener stringer 50, but the disclosure does not limit the application of the slider 100A, which may be adjusted according to requirements.
Referring to FIG. 4 and FIG. 11, in this embodiment, the guide pillar 130 includes a front side surface S1, two opposite side surfaces S2 and S3 that are separated in the width direction W and parallel to each other, and a pair of inclined rear side surfaces S4 and S5. The guide pillar 130 is configured as a pillar structure having a substantially pentagonal (diamond-shaped) cross section. As an example, the first groove 132 is disposed on two opposite side surfaces S2 and S3 of the guide pillar 130 in the width direction W, and is disposed on the rear side surfaces S4 and S5 (e.g., the dotted region in FIG. 11) of the guide pillar 130 in the front-rear direction (i.e., the length direction L). That is, the first groove 132 is not disposed on the front side surface S1 (because the fastener stringer 50 does not contact the front side surface S1). Through the above arrangement, when the slider 100 is installed on the fastener stringers 50 to form the fastener 20, as shown in FIG. 5 and FIG. 11, the fastener stringers 50 are separated from each other by the opposite side surfaces S2 and S3 and the rear side surfaces S4 and S5 of the guide pillar 130 during the sliding process of the slider 100. In this way, the arrangement of the first groove 132 may reduce the friction between the inner edge of the fastener tape 52 and the side surfaces of the guide pillar 130 (i.e., the opposite side surfaces S2 and S3 and the rear side surfaces S4 and S5), and reduce the sliding resistance of the slider 100 on the fastener stringer 50. Accordingly, the slider 100 and the fastener 20 may improve the smoothness of the slider 100 when sliding on the fastener stringer 50, thereby reducing damage to the fastener stringer 50 and providing good operability.
Correspondingly, in the second modification shown in FIG. 12, the slider 100B has a similar structural configuration to the aforementioned slider 100. The main difference is that the first groove 132B of the slider 100B is not disposed on the two opposite side surfaces S2 and S3 of the guide pillar 130B in the width direction W (as shown in FIG. 12), but is only disposed on the rear side surfaces S4 and S5 of the guide pillar 130B in the front-rear direction (i.e., the length direction L). For other parts (e.g., the lower blade 110, the upper blade 120, the lower flange 140, the upper flange 150, and the tab pull installing lug 160, etc.), reference may be made to the foregoing description, which is not repeated herein. Through the above arrangement, when the slider 100B is installed on the fastener stringers 50 to form the fastener 20, the fastener stringers 50 are separated from each other by the rear side surfaces S4 and S5 of the guide pillar 130B during the sliding process of the slider 100B. In this way, the arrangement of the first groove 132B may reduce the friction between the inner edge of the fastener tape 52 and the side surfaces of the guide pillar 130B (i.e., the rear side surfaces S4 and S5). Moreover, compared with the slider 100 of the aforementioned embodiment, although the friction reducing effect of the slider 100B may be inferior, the first groove 132B may be disposed in a range (i.e., the rear side surfaces S4 and S5) that does not affect the trimming of the guide pillar 130B in the subsequent processes, which is beneficial to the subsequent processes. However, in other embodiments not shown, the first groove 132 may only be disposed on the two opposite side surfaces S2 and S3, or may also be disposed on all side surfaces of the guide pillar 130 (including the front side surface S1) to form an annular groove. The disclosure does not limit the arrangement position and dimension of the first groove 132, which may be adjusted according to requirements.
In addition, in the third modification shown in FIG. 13, the slider 100C has a similar structural configuration to the aforementioned slider 100. The main difference is that the upper blade 120C of the slider 100C is provided with a second groove 128 on the inner surface facing the lower blade 110, and the second groove 128 is located at a position on the inner surface of the upper blade 120C close to the guide pillar 130. That is, the second groove 128 is disposed on the upper blade 120C at a position close to the first groove 132, so that the first groove 132 and the second groove 128 correspond to each other (which may also be further connected to each other, but not limited thereto). Preferably, the second groove 128 extends from the portion where the upper blade 120C is connected to the guide pillar 130 toward the rear end portion E2, and gradually becomes narrower in the width direction W and gradually converges toward the center. For other parts (e.g., the lower blade 110, the guide pillar 130, the lower flange 140, the upper flange 150, the tab pull installing lug 160, and the first groove 132, etc.), reference may be made to the foregoing description, which is not repeated herein. Through the above arrangement, when the slider 100C is installed on the fastener stringers 50 to form the fastener 20, the arrangement of the second groove 128 may reduce friction between the inner edge of the fastener tape 52 and the interface between the guide pillar 130 and the upper blade 120C. Accordingly, the slider 100C and the fastener 20 may improve the smoothness of the slider 100C when sliding on the fastener stringer 50, thereby reducing damage to the fastener stringer 50 and providing good operability. However, the disclosure does not limit the shape and the inclusion or exclusion of the second groove 128, which may be adjusted according to requirements.
To sum up, in the slider of this embodiment, one of the lower blade and the upper blade is provided with a pair of flanges on two opposite lateral edges in the width direction. The inner surface of the other one of the lower blade and the upper blade and the end surface of the flanges are opposite to each other and separated by a gap. The side surface of the guide pillar is provided with a first groove corresponding to the gap in the up-down direction. When the slider is installed on the fastener stringer to form the fastener, the outer edge of the fastener tape passes through the gap of the slider, and the inner edge of the fastener tape corresponds to the first groove provided on the side surface of the guide pillar of the slider. In this way, the arrangement of the first groove may reduce the friction between the inner edge of the fastener tape and the side surface of the guide pillar and reduce the sliding resistance of the slider on the fastener stringer. Preferably, the boundary between the first groove and the side surface of the guide pillar forms a step portion, and the step portion is further arranged corresponding to the positions of the fastener tape and the element column coil in the fastener stringer used in the slider. Accordingly, a slider and a fastener of the disclosure may improve the smoothness of the slider when sliding on the fastener stringer, thereby reducing damage to the fastener stringer and providing good operability, are provided in the disclosure.
Finally, it should be noted that the foregoing embodiments are only used to illustrate the technical solutions of the disclosure, but not to limit the disclosure; although the disclosure has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that the technical solutions described in the foregoing embodiments may still be modified, or parts or all of the technical features thereof may be equivalently replaced; however, these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the disclosure.
Patent Application
20250204651
