PULL TAB FOR A CLOSURE

Abstract

A pull tab (100, 100A) for a fastener is adapted for installation on the slider (50) and includes: a gripping portion (110, 110A) configured in a sheet shape; a slider connecting portion (120) extending outward from a front end (E1) of the gripping portion (110, 110A) and passing through a pull tab installing portion (52) of the slider (50); an engaged portion (130) located on one of the side surfaces (112) of the gripping portion (110, 110A) in a width direction (W); and an engaging portion (140) extending outward from an end portion (120a) of the slider connecting portion (120). The engaging portion (140) is fitted into the engaged portion (130) along the side surface (112) of the gripping portion (110, 110A), so that the sliding connection portion (120) is closed to form an annular shape. Representative drawing: 1

Description

BACKGROUNDTechnical FieldThe disclosure relates to technology in the field of closure technology and more particularly relates to a pull tab for a closure.Prior ArtA conventional fastener typically includes a fastener chain comprised of a pair of fastener stringers, each of the fastener stringers comprised of a strip of fastener tape and a plurality of element columns disposed thereon. The closure also includes a pusher attached to a closure string for pushing open or close the element columns. In addition, a pull tab may also be attached to the slider as needed.In the related art, a slider for a closure system typically includes a slider connecting portion for installation on a slider and a gripping portion that the user can grip with fingers to operate the slider. The pull tab may use a cord as the slider connecting portion. A grip portion formed of resin material may be injection-molded at the tip end of the cord, whereby the cord may be passed through the pull tab installation portion of the slider to attach the pull tab to the slider, and the slider may be driven to slide through the grip portion at the tip end of the cord.However, such a pull tab needs to be made of various materials (i.e., the cord is used as the slider connecting portion, the resin material is used to form the grip portion, etc.), which results in an increase in required methods and manufacturing costs. In addition, when the structure of the pull tab is improved to reduce manufacturing processes, structural strength and operability of the improved pull tab must be considered.SUMMARYIn the disclosure, a pull tab for a fastener is provided that can reduce manufacturing methods and manufacturing costs and has sufficient structural strength and good operability.In the disclosure, there is provided a pull tab for a fastener adapted to be attached to the slider, and includes: a grip portion configured in a sheet shape; a slider connection portion extending outward from a front end of the grip portion and adapted to be passed through a pull tab installation portion of the slider; an engagement portion located on one of side surfaces of the grip portion in the width direction; and an engagement portion extending outward from an end portion of the slider connection portion. The engaging portion is fitted into the engaged portion along the side surface of the grip portion, so that the slider connecting portion is closed and forms an annular shape.In an embodiment of the disclosure, the engaged portion includes an extending recess portion extending along the side surface of the gripping portion and an engaging recess portion located at an outermost end of the extending recess portion. The engaging portion includes an extension rod portion extending from an end portion of the slider connecting portion along the side surface of the gripping portion, and an engaging protrusion located at an extreme end of the extension rod portion. The extension rod portion is fitted into the extending recess portion along the side surface of the grip portion, and the engagement protrusion is fitted into the engagement recess portion so that the engagement portion is fitted into the engaged portion.In an embodiment of the disclosure, the extending recess portion extends along the side surface of the grip portion from the front end of the grip portion to a rear end of the grip portion, and the engagement recess portion is located at the rear end of the grip portion.In an embodiment of the disclosure, an extension direction of the extending recess portion intersects an extension direction of the engaging recess portion, and an extension direction of the extension rod portion intersects an extension direction of the engaging protrusion.In an embodiment of the disclosure, the engaged portion further includes a rotatable recess portion located at an extreme end of the engagement recess portion. The engaging portion further includes a bent protrusion portion located at an outermost end of the engaging protrusion. An extension direction of the rotatable recess portion intersects with the extension direction of the engagement recess portion, so that an extreme end of the engaged portion forms a hook shape. An extension direction of the bent protrusion portion intersects with the extension direction of the engagement protrusion, so that an extreme end of the engagement portion forms a hook shape. The bent protrusion portion is fitted into the rotatable recess portion so that the engagement portion is fitted into the engaged portion.In an embodiment of the disclosure, the slider connecting portion extends from a first side in the width direction to a second side opposite to the first side at the front end of the grip portion, and the engaged portion is located on a side surface of the grip portion corresponding to the second side.In an embodiment of the disclosure, a recess portion is formed on an outer surface of the grip portion near the first side, and when viewed from the front side of the grip portion, the recess portion does not overlap with a region corresponding to the engaged portion on the grip portion.In an embodiment of the disclosure, the gripping portion, the slider connecting portion, and the engaging portion are made of soft material.In an embodiment of the disclosure, the shape and dimensions of the engagement portion correspond to the shape and dimensions of the engaged portion such that the engagement portion fits within the engaged portion to form a close fit.In an embodiment of the disclosure, the grip portion, the slider connection portion, the engagement portion, and the engaged portion are different portions of a single component that are integrally formed.Based on the above, in the pull tab of a fastener of the disclosure, the slider connecting portion extends outward from the front end of the grip portion, the engaged portion is located on a side surface of the grip portion in the width direction, and the engagement portion extends outward from the end portion of the slider connecting portion. The slider connecting portion is adapted to be passed through the pull tab installation portion of the slider, and the engaging portion is fitted into the engaged portion along the side surface of the gripping portion, so that the slider connecting portion is closed and assumes an annular shape. In this way, the pull tab can be made of the same material and installed and secured by engaging the structures thereon (i.e., the engaged portion and the engaging portion), whereby the pull tab can be easily installed on the slider by opening or closing. Specifically, the engaging portion is fitted into the engaged portion along the side surface of the gripping portion, so that the engaging portion and the engaged portion can establish a good connection, thereby being less likely to release or separate in the closed state during use. Accordingly, the pull tab for the fastener of the disclosure can reduce the manufacturing methods and the manufacturing cost, and has sufficient structural strength and good operability.In order to make the above-mentioned features and advantages of the disclosure comprehensible, the embodiments provided with drawings will be described in detail below.BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a three-dimensional schematic illustration of a pull tab for a closure in a closed state according to an embodiment of the disclosure. FIG. 2 is a schematic front view of the pull tab shown in FIG. 1 in a closed state. FIG. 3 is a schematic plan view of the pull tab shown in FIG. 1 in the closed state. FIG. 4 is a schematic front view of the pull tab shown in FIG. 1 in the opened state. FIG. 5 is a three-dimensional schematic illustration of the process of installing the pull tab shown in FIG. 1 on a slider. FIG. 6 is a three-dimensional schematic illustration of the pull tab shown in FIG. 5 after installation on the slider. FIG. 7 is a three-dimensional schematic illustration of a pull tab installed on a slider according to a variation of the disclosure.DETAILED DESCRIPTION OF THE DISCLOSED EMBODIMENTSThe exemplary embodiments of the disclosure will be described in detail. Examples of the exemplary embodiments are illustrated in the drawings. FIG. 1 is a three-dimensional schematic illustration of a pull tab for a closure in a closed state according to an embodiment of the disclosure. FIG. 2 is a schematic front view of the pull tab shown in FIG. 1 in a closed state. FIG. 3 is a schematic plan view of the pull tab shown in FIG. 1 in the closed state. FIG. 4 is a schematic front view of the pull tab shown in FIG. 1 in the opened state. FIG. 5 is a three-dimensional schematic illustration of the process of installing the pull tab shown in FIG. 1 to a slider. FIG. 6 is a three-dimensional schematic illustration of the pull tab shown in FIG. 5 after installation on the slider. FIG. 7 is a three-dimensional schematic illustration of a pull tab installed on a slider according to a variation of the disclosure. The specific structure of the pull tab 100 and its modifications in an embodiment of the disclosure, as well as the installation means when the pull tab 100 is attached to the slider 50, etc., will be described below with reference to FIGS. 1 to 7. However, the disclosure is not limited thereto, and the disclosure may be adopted as needed.Referring to FIGS. 1 to 6, in this embodiment, the pull tab 100 is adapted to be installed on the slider 50, and includes a gripping portion 110, a slider connecting portion 120, an engaged portion 130, and an engaging portion 140. The gripping portion 110 is configured in a sheet shape to allow the user to grip it with the fingers to operate the pull tab 100. The slider connecting portion 120 extends outward from the front end E 1 of the gripping portion 110 and is adapted to pass through the pull tab installation portion 52 of the slider 50 (as shown in FIGS. 5 and 6 ). The engaged portion 130 is located on one of the side surfaces 112 of the grip portion 110 in the width direction W. The engagement portion 140 extends from the end portion 120 aof the slide connection portion 120, and the engagement portion 140 is fitted into the engaged portion 130 along the side surface 112 of the grip portion 110, so that the slide connection portion 120 is closed to form an annular shape.Specifically, in this embodiment, the gripping portion 110 is, for example, a substantially elongated strip-shaped structure extending in the front-rear direction (i.e., in the longitudinal direction L). However, the grip portion 110 may also be arranged in a desired shape according to requirements, and its dimensions (length, width, thickness) may be adjusted according to requirements, and the disclosure is not limited thereto. Accordingly, the slider connecting portion 120 is a thin and elongated strip-shaped structure that extends outward from the front end E 1 of the grip portion 110 while passing through the installation hole 52 aon the pull tab installation portion 52 of the slider 50. Preferably, the dimension of the slider connecting portion 120 in the width direction W is smaller than the dimension of the grip portion 110 in the width direction W. That is, as compared with the sheet-shaped grip portion 110, the slider connecting portion 120 is configured in an elongated strip shape. In this way, the slider connecting portion 120 can be bent without requiring an excessive length and easily form a ring shape by being passed through the pull tab installation portion 52 of the slider 50 and looped back to the side surface 112 of the gripping portion 110. However, as long as the slider connecting portion 120 can be installed by passing through the pull tab installation portion 52, its dimensions (length, width, thickness) can be adjusted according to requirements, and the disclosure is not limited thereto.Moreover, in this embodiment, the engaged portion 130 and the engaging portion 140 are respectively disposed on the gripping portion 110 and the slide connection portion 120. The engaged portion 130 is, for example, a recessed structure formed on the side surface 112 of the grip portion 110, and the engagement portion 140 is, for example, a protruding structure formed on the end portion 120 aof the slider connection portion 120 opposite to the grip portion 110. That is, one end of the slide connection portion 120 is connected to the front end E 1 of the grip portion 110, and the other end of the slide connection portion 120 is formed with an engagement portion 140. Thereby, the slider connecting portion 120 can be connected to the side surface 112 of the gripping portion 110 by the engagement of the engaging portion 140 and the engaged portion 130, so that the slider connecting portion 120 can be closed to form an annular shape. In this way, the pull tab 100 is in a closed state (the slider connecting portion 120 is closed to form an annular shape) when the engaging portion 140 moves into the engaged portion 130 in a direction approaching the gripping portion 110 (as shown in FIGS. 1 and 2 ) is closed (the slider connecting portion 120 is closed to form an annular shape), and when the engaging portion 140 moves out of the engaged portion 130 in a direction away from the gripping portion 110 (as shown in FIG. 4 ), the pull tab 100 is in an open state.From this, it can be seen that when the pull tab 100 is in the open state, as shown in FIGS. 4 and 5, the engagement portion 140 formed by the end portion 120 aof the slider connection portion 120 is separated from the engaged portion 130, whereby the end portion 120 aof the slider connection portion 120 of the pull tab 100 can pass through the installation hole 52 aof the tab installation portion 52 of the slider 50 together with the engagement portion 140. After the slide connecting portion 120 is passed through the pull tab installation portion 52, as illustrated in FIG. 6, the engagement portion 140 formed by the end portion 120 aof the slide connecting portion 120 may be fitted into the engaged portion 130, so that the slide connecting portion 120 may be closed to form an annular shape. In this way, the pull tab 100 may be made of the same material and installed and secured by engaging the structures thereon (i.e., the engaged portion 130 and the engaging portion 140), whereby the pull tab 100 can be easily installed on the slider 50 by opening or closing. Specifically, the engagement portion 140 is fitted into the engaged portion 130 along the side surface 112 of the grip portion 110, so that the engagement portion 140 and the engaged portion 130 can achieve good connection, whereby the pull tab 100 is less likely to become loose or come off during use in the closed state. Accordingly, the pull tab 100 can reduce manufacturing processes and manufacturing costs, and has sufficient structural strength and good operability.In this embodiment, as illustrated in FIGS. 1 to 4, the engaged portion 130 includes, for example, an extending recess portion 132 extending along the side surface 112 of the gripping portion 110, and an engaging recess portion 134 located at an outermost end of the extending recess portion 132. Accordingly, the engagement portion 140 includes an extension rod portion 142 extending from the end portion 120 aof the slider connection portion 120 along the side surface 112 of the grip portion 110, and an engagement protrusion 144 located at the outermost end of the extension rod portion 142. The extension rod portion 142 is fitted into the extending recess portion 132 along the side surface 112 of the grip portion 110, and the engagement protrusion 144 is fitted into the engagement recess portion 134 so that the engagement portion 140 is fitted into the engaged portion 130. Preferably, the extending recess portion 132 extends along the side surface 112 of the gripping portion 110 from the front end E 1 of the gripping portion 110 to the rear end E 2 of the gripping portion 110, and the engaging recess portion 134 is located at the rear end E 2 of the gripping portion 110. That is, the extending recess portion 132 is, for example, an elongated strip-shaped groove formed on the side surface 112 of the grip portion 110 and connected to the front end E 1 and the rear end E 2, and the engaging recess portion 134 is a transverse notch at the outermost end of the elongated strip-shaped groove. In contrast, the extension rod portion 142 is also configured as an elongated rod portion extending from the front end E 1 to the rear end E 2 corresponding to the length of the extending recess portion 132, and the engagement protrusion 144 is a transverse protrusion at the outermost end of the elongated rod portion. In addition, the extension direction of the extending recess portion 132 (substantially corresponding to the longitudinal direction L of the side surface 112 of the grip portion 110) intersects the extension direction of the engageable recess portion 1 34 (substantially corresponding to the width direction W) to form a substantially L shape, and the extension direction of the extension rod portion 142 intersects the extension direction of the engagement protrusion 144 to form a substantially L shape.By the above arrangement, in this embodiment, extending recess portion 132 of engaged portion 130 is formed on side surface 112 of grip portion 110 via front end E 1 and rear end E 2 in the front-rear direction (i.e., longitudinal direction L) and opens further outward at front end E 1, side surface 112 and rear end E 2. Thereby, the extension rod portion 142 of the engagement portion 140 crosses the front end E 1 and the rear end E 2 in the front-rear direction (i.e., the longitudinal direction L) and is fitted into the engaged portion 130 fitted to the side surface 1 12 of the grip portion 110 in the extending recess portion 132, thereby increasing the contact area between the engagement portion 140 and the engaged portion 130 fitted to each other, so that the structural strength of the pull tab 100 is improved. Specifically, when the engagement portion 140 moves into the engaged portion 130 in a direction approaching the side surface 112, the extension rod portion 142 can enter the extending recess portion 132 from the opening of the front end E 1 of the extending recess portion 132, and the engagement protrusion 144 can enter the engagement recess portion 134 from the opening of the rear end E 2 of the extending recess portion 132 (i.e., the outermost end of the extending recess portion 132), whereby the engagement portion 140 can be easily attached to the engaged portion 130. In addition, the engagement protrusion 144 of the engagement portion 140 is fitted into the engagement recess portion 134 of the engaged portion 130 along the width direction W, whereby the engagement protrusion 144 can interfere with the inner wall surface of the engagement recess portion 134 in the front-rear direction (i.e., the length direction L). Thereby, when the pull tab 100 is installed on the pull tab installation portion 52 of the slider 50, the engagement portion 140 is not easily detached from the engaged portion 130, even if a user grasps the grasping portion 110 of the pull tab 100 with fingers and operates the pull tab 100 in the front-rear direction (i.e., in the longitudinal direction L). Accordingly, the pull tab 100 is less likely to be loosened or separated in the closed state during use, and has sufficient structural strength and good operability.Moreover, in this embodiment, the engaged portion 130 further includes a rotatable recess portion 136 located at the extreme end of the engagement recess portion 134, and the engagement portion 140 further includes a curved protrusion portion 146 located at the extreme end of the engagement protrusion 144. The extension direction of the rotating recess portion 136 (substantially corresponding to the length direction L) intersects with the extension direction of the engaging recess portion 134 (substantially corresponding to the width direction W) so that the tip end of the engaged portion 130 forms a hook shape. Accordingly, the extension direction of the bent protrusion portion 146 intersects with the extension direction of the engagement protrusion 144, so that the end of the engagement portion 140 forms a hook shape. In this way, when the extension rod portion 142 is inserted into the extending recess portion 132 along the side surface 112 of the grip portion 110 and the engagement protrusion 144 is fitted into the engagement recess portion 134, the bent protrusion portion 146 is fitted into the rotatable recess portion 136, so that the engagement portion 140 is fitted into the engaged portion 130. Preferably, the rotatable recess portion 136 rotates and extends from the rear end E 2 of the gripping portion 110 to the front end E 1, and the bent protrusion portion 146 bends and extends from the outermost end of the engagement protrusion 144 to the front end E 1. In this way, when the extension rod portion 142 moves in a direction approaching the side surface 112 of the grip portion 110, the bent protrusion portion 146 is inserted into the rotating recess portion 136 from the rear end E 2 to the front end E 1 through the protruding wall 138 between the extending recess portion 132 and the rotating recess portion 136 (i.e., the inner wall of the engagement recess portion 134), and the engagement protrusion 144 and the extension rod portion 142 are successively fitted into the engagement recess portion 134 and the extending recess portion 132, so that the engagement portion 140 is fitted into the engaged portion 130.By the above arrangement, in this embodiment, the bent protrusion portion 146 of the engagement portion 140 is further fitted into the rotatable recess portion 136 fitted into the engaged portion 130 of the grip portion 110 along the front-rear direction (i.e., the longitudinal direction L), thereby increasing the contact area between the engagement portion 140 and the engaged portion 130 fitted into each other and generating interference, so that the structural strength of the pull tab 100 is improved. Moreover, when the pull tab 100 is closed, the engagement portion 140 forms a barb-like shape, and can hook the protruding wall 138 (i.e., the inner wall of the engagement recess portion 134) between the extending recess portion 132 and the rotatable recess portion 136 with the notch (i.e., the inner wall of the engagement protrusion 144) between the extending rod portion 142 and the bent protrusion portion 146. Thereby, when the pull tab 100 is installed on the pull tab installation portion 52 of the slider 50, even if a user grips the grip portion 110 with fingers and operates the pull tab 100 in the front-rear direction (i.e., in the longitudinal direction L), the engagement portion 140 is not easily detached from the engaged portion 130. Accordingly, the pull tab 100 is less likely to be loosened or separated in the closed state during use, and has sufficient structural strength and good operability. However, as long as the engaging portion 140 can be fitted into the engaged portion 130 along the side surface 112 of the gripping portion 110, the disclosure does not limit the specific structures of the engaged portion 130 and the engaging portion 140, which can be adjusted according to requirements.Moreover, in this embodiment, as illustrated in FIGS. 1 to 6, the slide connection portion 120 extends from the first side S 1 in the width direction W to the second side S 2 opposite to the first side S 1 at the front end E 1 of the gripping portion 110, and the engaged portion 130 is located on the side surface 112 corresponding to the second side S 2 of the gripping portion 110. That is, one end of the slider connecting portion 120 is connected to a portion of the front end E 1 of the grip portion 110 near the first side S 1. The other end of the slide connecting portion 120 is formed along the side surface 112 with the engaged portion 130 connected slide connecting portion 120 through the engaging portion 140 formed at the end portion 120 aof the slide connecting portion 120 to make connection with the side surface 112 of the second side S 2 of the gripping portion 110, so that the slide connecting portion 120 is closed to form an annular shape. With the above arrangement, the spool connecting portion 120 that is closed to form an annular shape intersects the first side S 1 and the second side S 2 along the width direction W at the front end E 1 of the grip portion 110, thereby improving the connection and the structural strength of the closed and annular spool connecting portion 120. Accordingly, the pull tab 100 has sufficient structural strength in the closed state. However, as long as the slide connecting portion 120 can be installed on the pull tab installation portion 52 of the slide 50 and closed by fitting the engagement portion 140 into the engaged portion 130, thereby forming an annular shape, the disclosure does not limit the specific structure and relative position of the slide connecting portion 120, which can be adjusted according to requirements.Moreover, in this embodiment, as illustrated in FIGS. 1 to 6, the gripping portion 110, the slider connecting portion 120, and the engaging portion 140 are made of soft material, and the gripping portion 110, the slider connecting portion 120, the engaging portion 140, and the engaged portion 130 are different portions of a single member integrally formed. As an example, a resin material capable of deforming by compression (having flexibility or elasticity) may be used. In this way, the pull tab 100 may be made of the same material to reduce manufacturing processes and manufacturing costs (e.g., manufacturing is performed by an injection molding process), and the engagement portion 140 may be easily fitted into the engaged portion 130 due to its material properties (deformability by compression). Preferably, the shape and dimensions of the engagement portion 140 correspond to the shape and dimensions of the engaged portion 130 (e.g., the dimensions of the engagement portion 140 are greater than or equal to the dimensions of the engagement portion 130) such that the engagement portion 140 fits within the engaged portion 130 and forms a close fit. That is, the engaging portion 140 that is slightly larger than or about the same size is compressed due to its material properties and fitted into the engaged portion 130 so that the outer surface of the engaging portion 140 is in close contact with the inner surface of the engaged portion 130. In this way, the engagement effect between the engagement portion 140 and the engaged portion 130 can be improved.In addition, for example, when soft materials such as resin materials are used for manufacturing the grip portion 110, the slider connection portion 120, the engagement portion 140, etc., as illustrated in FIGS. 1 to 4, a recess portion 114 is formed on a portion of the outer surface of the grip portion 110 near the first side S 1. When viewed from the front side of the grip portion 110 (i.e., from the perspective of FIGS. 2 and 4 ), the recess portion 114 does not overlap with the region corresponding to the engaged portion 130 on the grip portion 110. In the above arrangement, as shown in FIG. 3, a recessed portion 114 is formed on the first side S 1 of the grip portion 110, and the engaged portion 130 is formed on the second side S 2. The thickness (i.e., the distance d 1 in the thickness direction T between the outer surfaces on opposite sides of the recess portion 114) of the region corresponding to the recess portion 114 on the first side S 1 of the gripping portion 110 is substantially similar to the thickness (i.e., the distance d 2 in the thickness direction T between the outer surfaces on opposite sides of the gripping portion 110 minus the distance d 3 in the thickness direction T between the inner wall surfaces on opposite sides of the engaged portion 130) of the region corresponding to the engaged portion 130 on the second side S 2. In this way, during the manufacturing process of the pull tab 100, by injection molding a resin material, surface impressions on the gripping portion 110 caused by the difference in the speed of thermal extension and contraction caused by the difference in the thickness on the opposite sides can be prevented. Thus, the gripping portion 110 of the pull tab 100 has an aesthetically pleasing appearance.However, in the modified example of FIG. 7, the pull tab 100A has a similar structural arrangement to the aforementioned pull tab 100. The main difference is that the outer surface of the grip portion 110A does not include the recess portion 114 formed on the outer surface of the aforementioned grip portion 110. For the description of the remaining specific structures of the slider connection portion 120, the engaged portion 130, and the engaging portion 140, reference may be made to the above content, which is not repeated here. From this, it can be seen that although in this embodiment, the formation of a recess portion 114 on the outer surface of the grip portion 110 is proposed to prevent surface impressions on the grip portion 110, when a pull tab 100 is also possible to omit the formation of the recess portion 114 on the outer surface of the grip portion 110 by injection molding using resin material, in cases where resin material is used. Alternatively, the pull tab 100 may be manufactured using materials other than resin materials and / or using a method other than injection molding. The disclosure does not limit whether the recess portion 114 is disposed, as well as the material and the manufacturing method of the pull tab 100, which can be adjusted according to requirements.In summary, in the pull tab of the fastener of the disclosure, the slider connecting portion extends outward from the front end of the grip portion, the engaged portion is located on a side surface of the grip portion in the width direction, and the engagement portion extends outward from the end portion of the slider connecting portion. The slider connecting portion is adapted to be passed through the pull tab installation portion of the slider, and the engaging portion is fitted into the engaged portion along the side surface of the gripping portion, so that the slider connecting portion is closed and assumes an annular shape. In this way, the pull tab can be made of the same material and installed and secured by engaging the structures thereon (i.e., the engaged portion and the engaging portion), whereby the pull tab can be easily installed on the slider by opening or closing. Specifically, the engaging portion is fitted into the engaged portion along the side surface of the gripping portion, so that the engaging portion and the engaged portion can establish a good connection, thereby being less likely to release or separate in the closed state during use. Preferably, the extending recess portion of the engaging portion extends from the front end of the gripping portion to the rear end of the gripping portion along the side surface of the gripping portion, and the recess portion of the engaging portion is located at the rear end of the protruding recess portion, thereby increasing the contact area between the engaging portion and the engaging portion which are respectively fitted, so that the structural strength of the pull tab is improved. Accordingly, the pull tab for the fastener of the disclosure can reduce the manufacturing methods and the manufacturing cost, and has sufficient structural strength and good operability.Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the disclosure, but not for limiting the disclosure; although the disclosure has been described in detail with reference to the above embodiments, persons of ordinary skill in the art should understand that the technical solutions described in the above embodiments may still be modified or parts or all technical features thereof may be equivalently replaced; however, these modifications or substitutions do not depart from the spirit of the respective technical solutions from the scope of the technical solutions of the embodiments of the disclosure.REFERENCE NUMERALS:50 Slider 52 Pull tab installation portion 52 a Installations hole 100, 100A Tab 110, 110A Gripping portion 112 Side surface 114 Cutout portion 120 Slider connection portion 120 aEnd portion 130 Engaged portion 132 Extending cutout portion 134 Engaging cutout portion 136 Rotating cutout portion 138 Protruding wall 140 Engaging portion 142 Extension rod portion 144 Engaging protrusion 146 Bent protrusion portion d 1, d 2, d 3 Distance E 1 Front end E 2 Rear end S 1 First side S 2 Second side L Length direction T Thickness direction W Width direction

Claims

A pull tab (100, 100A) for a fastener, which is adapted to be installed on a slider (50), and which comprises: a grip portion (110, 110A) configured in a sheet shape; a slider connection portion (120) extending outward from a front end (E1) of the grip portion (110, 110A) and adapted to pass through a pull tab installation portion (52) of the slider (50); an engaged portion (130) located on one of side surfaces (112) of the grip portion (110, 110A) in a width direction (W); and an engaging portion (140) extending outward from an end portion (120a) of the slider connecting portion (120), the engaging portion (140) being fitted into the engaged portion (130) along the side surface (112) of the gripping portion (110, 110A) so that the slider connecting portion (120) is closed to form an annular shape.The pull tab (100, 100A) according to claim 1, wherein the engaged portion (130) comprises an extending recess portion (132) extending along the side surface (112) of the gripping portion (110, 110A) and an engaging recess portion (134) located at an outermost end of the extending recess portion (132), the engaging portion (140) comprises an extending rod portion (142) extending from the end portion (120a) of the slider connecting portion (120) along the side surface (112) of the gripping portion (110, 110A), and an engaging protrusion (144) located at an outermost end of the extending rod portion (142), the extending rod portion (142) being engaged with the extending recess portion (132) along the side surface (112) of the gripping portion (110, 110A), 110A), and the engaging protrusion ( 144) is fitted into the engaging recess portion ( 134), so that the engaging portion ( 140) is fitted into the engaged portion ( 130).The pull tab (100, 100A) according to claim 2, wherein the extending recess portion (132) extends along the side surface (112) of the gripping portion (110, 110A) from the front end (E1) of the gripping portion (110, 110A) to a rear end (E2) of the gripping portion (110, 110A), and the engaging recess portion (134) is located at the rear end (E2) of the gripping portion (110, 110A).The pull tab (100, 100A) according to claim 2, wherein an extension direction of the extending recess portion (132) intersects an extension direction of the engaging recess portion (134), and an extension direction of the extension rod portion (142) intersects an extension direction of the engaging protrusion (144).The pull tab (100, 100A) according to claim 4, wherein the engaged portion (130) further comprises a rotatable recess portion (136) located at an outermost end of the engagement recess portion (134), the engagement portion (140) further comprises a curved protrusion portion (146) located at an outermost end of the engagement protrusion (144), an extension direction of the rotatable recess portion (136) intersects the extension direction of the engagement recess portion (134) such that an outermost end of the engaged portion (130) forms a hook shape, an extension direction of the curved protrusion portion (146) intersects the extension direction of the engagement protrusion (144) such that an outer end of the engagement portion (140) forms a hook shape, and the bent protrusion portion ( 146) is fitted into the rotatable recess portion ( 136) such that the engagement portion ( 140) is fitted into the engaged portion ( 130).The pull tab (100, 100A) according to any one of claims 1 to 5, wherein the slider connecting portion (120) extends from a first side (S1) in the width direction (W) to a second side (S2) opposite to the first side (S1) at the front end (E1) of the gripping portion (110, 110A), and the engaged portion (130) is located at a side surface (112) of the gripping portion (110, 110A) corresponding to the second side (S2).The pull tab (100) according to claim 6, wherein a recess portion (114) is formed on an outer surface of the gripping portion (110) near the first side (S1), and when viewed from the front side of the gripping portion (110), the recess portion (114) does not overlap with a region corresponding to the engaged portion (130) on the gripping portion (110).The pull tab (100, 100A) according to any one of claims 1 to 5, wherein the gripping portion (110, 110A), the slider connecting portion (120), and the engaging portion (140) are made of soft material.The pull tab (100, 100A) of any one of claims 1 to 5, wherein shape and dimensions of the engagement portion (140) correspond to the shape and dimensions of the engaged portion (130) such that the engagement portion (140) fits within the engaged portion (130) to form a close fit.The pull tab (100, 100A) according to any one of claims 1 to 5, wherein the gripping portion (110, 110A), the slider connecting portion (120), the engaging portion (140), and the engaged portion (130) are different portions of a single component integrally formed.

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