Slider for slide fastener

• US 10,178,899 B2
• Filed: 03/05/2018
• Issued: 01/15/2019
• Est. Priority Date: 02/04/2016
• Status: Active Grant

• Current Assignee: YKK Corporation
• Original Assignee: YKK Corporation
• Inventors: Hsu, Hsien Hsiang, Lai, Chun Chun, Iwase, Yuichi
• Primary Examiner(s): Sandy, Robert
• Assistant Examiner(s): Do, Rowland
• Application Number:
  US15/912,533
• Publication Number:
  US 20180192747A1
• Time in Patent Office: 316 Days
• CPC Class Codes: A44B 19/26 Sliders
• CPC Class Codes: A44B 19/262 Pull members; Ornamental attachments for sliders
• CPC Class Codes: A44B 19/305 in the form of a locking prong protuding from the pull member
• CPC Class Codes: A44B 19/36 Means for permanently uniting the stringers at the end; Means for stopping movement of slider at the end

Abstract

There is provided a slider for a slide fastener. The slider includes a body, a pull tab, a shaft member, and a coil spring. The pull tab has a base portion, a gripper and a claw portion protruding from the base portion. The shaft member is configured to rotatably support the pull tab relative to the body. The coil spring is attached around the shaft member to urge the gripper to be laid down toward the body. A claw guide portion allows a tip end of the claw portion to protrude into the guide groove. A restricting portion of the body restricts rotation of the pull tab when the pull tab is raised by a predetermined angle from the body. A restricted portion of the pull tab comes in contact with the restricting portion when the pull tab is raised by the predetermined angle from the body.

Claims

1. A slider for slide fastener, comprising:

a body having an upper blade and a lower blade connected by a guide post and having a guide groove between the upper blade and the lower blade;

a pull tab having a base portion rotatably attached to the body, a gripper extending from the base portion and a claw portion protruding from the base portion;

a shaft member inserted through the pull tab, supported by the body at both ends thereof and configured to rotatably support the pull tab relative to the body; and

a coil spring attached around the shaft member so as to urge the gripper of the pull tab to be laid down toward the body,

wherein shoulder mouths are formed on both right and left sides of the guide post at a front side of the body and a rear mouth is formed at a rear end of the body,

wherein the guide groove communicates the shoulder mouths with the rear mouth to guide fastener elements of the slide fastener,

wherein the body comprises a claw guide portion formed in the upper blade to allow a tip end of the claw portion to protrude into the guide groove through the claw guide portion when the pull tab is laid down toward the body, and

wherein the base portion has a body attachment portion comprising;

a coil spring receiving portion formed in a recess shape which is opened at one of right and left sides thereof to receive the coil spring therein; and

a shaft member insertion portion provided at the other of the right and left sides to allow the shaft member to be inserted therethrough.

2. The slider for slide fastener according to claim 1, wherein the coil spring receiving portion comprises:

a bottom portion allowing the coil spring to be installed thereon; and

a side wall portion formed with the shaft member insertion portion.

3. The slider for slide fastener according to claim 2, wherein at least a part of the claw portion and at least a part of the side wall portion are included in one predetermined cross section perpendicular to the right and left direction.

4. The slider for slide fastener according to claim 2, wherein the bottom portion is formed in a notch shape at a side thereof, which is one of the right and left sides thereof and opposite to the gripper.

5. The slider for slide fastener according to claim 2, wherein the bottom portion has a coil spring holding portion at a side thereof, which is one of the right and left sides thereof and opposite to the gripper.

6. The slider for slide fastener according to claim 2, wherein the coil spring comprises:

a coil portion having a coil shape and configured to allow the shaft member to be inserted therethrough;

a first pressed portion protruding from one end of the coil portion toward an outer peripheral side thereof and configured to be in contact with the bottom portion of the coil spring receiving portion; and

a second pressed portion protruding from the other end of the coil portion toward an outer peripheral side thereof opposite to the first pressed portion.

7. The slider for slide fastener according to claim 6,

wherein the first pressed portion has a first bent portion extending to one side of the right and left direction after protruding from the one end of the coil portion toward the outer peripheral side, and

wherein the second pressed portion has a second bent portion extending to the other side of the right and left direction after protruding from the other end of the coil portion toward the outer peripheral side thereof opposite to the first pressed portion.

8. The slider for slide fastener according to claim 7, wherein a width, in a right and left direction, of the restricted portion are longer than a half of a width, in the right and left direction, of an upper surface of the base portion.

9. The slider for slide fastener according to claim 7,

wherein the body comprises:

shaft member support portions protruding upward from both end portions, in a right and left direction, of the upper blade and configured to allow the shaft member to be inserted therein; and

a pull tab receiving portion formed in a recess shape at a middle portion, in the right and left direction, between the shaft member support portions and configured to receive the base portion of the pull tab therein, and

wherein when the pull tab is raised up, the tip end of the claw portion is concealed without protruding from the body as viewed in the right and left direction.

10. The slider for slide fastener according to claim 9,

wherein the restricting portion has a first restricting portion on a bottom surface at a front side of the shaft member support portions, and

wherein the restricted portion has a first restricted portion on an end surface of the base portion opposite to the gripper.

11. The slider for slide fastener according to claim 10, wherein the base portion has a contact portion configured to come in contact with the first restricting portion, wherein the contact portion has a shape of an arc concentric with the shaft member and extends from the first restricted portion to the claw portion.

12. The slider for slide fastener according to claim 1, wherein the claw portion is formed at a side opposite a portion of the body attachment portion at which the body attachment portion is opened at the one of right and left sides thereof, with respect to a center line, in a front and rear direction, of the base portion.

13. The slider for slide fastener according to claim 1,

wherein the body comprises a restricting portion for restricting rotation of the pull tab when the pull tab is raised by an allowable rotation angle from the body, and

wherein the pull tab comprises a restricted portion coming in contact with the restricting portion when the pull tab is raised by the allowable rotation angle from the body.

14. The slider for slide fastener according to claim 13,

wherein the body comprises:

shaft member support portions protruding upward from both end portions, in a right and left direction, of the upper blade and configured to allow the shaft member to be inserted therein; and

a pull tab receiving portion formed in a recess shape at a middle portion, in the right and left direction, between the shaft member support portions and configured to receive the base portion of the pull tab therein, and

wherein the pull tab receiving portion is defined by a recess formed at a middle portion, in the right and left direction, between protrusions and the pull tab receiving portion includes the restricting portion.

15. The slider for slide fastener according to claim 13, wherein the base portion has a recess-shaped stepped portion provided at a side, on which the coil spring is installed, of right and left sides of the restricted portion.

16. The slider for slide fastener according to claim 15, wherein the restricted portion is a flat surface.