Push Lock
A push lock is a fastening hardware item used around bags and belts that is secured by pushing the insert section into the receiver fitting and released by pressing the operating part.
Contents6 sections
Definition and Overview
A push lock is a fastening hardware item that combines a receiver as the main body with an insert section attached to tape or a belt. When the insert section is inserted into the receiver, the internal catch engages and helps prevent unintended release.
The name may vary depending on the product or trading partner, and it is also called a insert lock or push lock. It is used for bag flaps and strap closures, serving both a fastening function and a decorative purpose.
Materials and Structure
For metal versions, zinc alloy die-cast parts, brass, or iron may be used, and some are finished with plating or coating to improve appearance. For resin versions, polyacetal and similar materials may be used, and they are selected according to lightness and the usage environment.
Metal versions can create a substantial look, but attention is needed regarding weight, plating wear, rust, and discoloration. Resin versions are lightweight, but changes in condition due to impact at low temperatures, ultraviolet light, and repeated loading should be checked under actual use conditions.
- Receiver: the main body that retains the insert section and includes the release mechanism.
- Insert section: the part attached to tape, a belt, or the flap side.
- Mounting section: this varies by product, such as sewing in, screw fastening, or cap and close post.
How to Indicate Size
Size is often shown by the inside dimension of the part through which the tape passes, and confirming compatibility with the tape width to be used is basic. If the tape width and inside dimension are the same, threading may become difficult, so the tape thickness, weave firmness, and folded edge also need to be checked.
Inside dimensions alone do not tell you the appearance or installation space. The overall dimensions, thickness, insert length, installation method, and required clearance during opening and closing should be listed in the specification, and the combination should be checked with the actual item.
Main Uses and Selection
It is used for bag flaps, pouches, wallets, belt-like decoration, and fastening sections. For apparel, consider whether the weight will pull on the fabric, whether it is in a position that touches the skin easily, and whether it can withstand washing or dry cleaning conditions.
When selecting, consider not only appearance but also pulling force when contents are inside, repeated opening and closing, and impact from dropping. For applications with high loads, evaluate not only the strength of the fastener itself but the entire structure, including the tape, sewn sections, and cap and close post.
- Check that the inside dimension is suitable for the width and thickness of the tape used.
- Check the stiffness of opening and closing operation and how easily the finger catches the release part with a prototype.
- For metal versions, check for rust, discoloration, and plating peeling caused by sweat, moisture, and detergent.
- For products that undergo needle detection, confirm in advance whether metal is present and whether they are needle detector compatible.
Differences from Similar Terms
A insert buckle usually refers to a resin or metal buckle that connects both ends of tape, and it is also used for load-bearing strap applications. In contrast, a push lock often refers to a lock-like piece of hardware used to fasten a flap or front section, and it may be treated as a decorative hardware item.
A magnetic buckle has a structure that closes when brought close together using magnetic force, so its fastening mechanism differs from that of a push lock. A twist fitting is a piece of hardware fastened with a rotating knob, and its release action and appearance differ.
Frequently Asked Questions
Should the inside dimension of a push lock be the same as the tape width that passes through it?
The inside dimension is an important measurement for judging tape width, but the same size is not always suitable. Because thickness, stiffness, and folded edges can make threading difficult, actual tape should be inserted to check assembly performance and appearance.
Can a push lock be used for a bag handle or a load-bearing section?
Yes, but strength must be checked according to the application. Evaluate the finished product in terms of not only the holding force of the fastener, but also the strength of the tape, the installation strength of the stitching or cap and close post, and wear from repeated loading.
What should be noted when using a metal push lock?
Pay attention to rust, discoloration, and plating wear caused by moisture, sweat, friction, and detergents. Also, when used in apparel, check for sagging due to weight and contact with the fabric. If there is a needle detection process, compatibility with metal detection is also necessary.
