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Screw head recess drive and corresponding driver tool and recess punch

一种推进部、凹口的技术，应用在螺钉、制造工具、切割工具等方向，能够解决不满足功能需求、不能提供凹口深度等问题

Inactive Publication Date: 2013-01-30
UNISTEEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This low head height does not provide sufficient notch depth to transmit sufficient torque in many applications
Traditional screws in these applications have functional limitations that do not meet the functional needs in the industry

Method used

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  • Screw head recess drive and corresponding driver tool and recess punch
  • Screw head recess drive and corresponding driver tool and recess punch
  • Screw head recess drive and corresponding driver tool and recess punch

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] Embodiments of screw head recesses in screw heads according to the invention are disclosed below. In addition, a corresponding driving tool or screwdriver cooperating with the recess is also disclosed. The notch in the screw head is suitable for transmitting high torque, suitable for automated assembly, and has high screwdriver cycle and high failure torque tolerance. Recessed screw heads and corresponding screwdrivers are described as having different sidewall configurations. As shown in Figures 1 to 6, one embodiment shown and described is a leaflet-shaped notch pusher embodiment having a straight wall configuration. Another embodiment shown and described is a leaflet-shaped notch pusher embodiment having a tapered wall configuration, as shown in FIGS. 7 to 12 .

[0025] In these examples, as Figure 1A As shown, the basic geometry and configuration of the top surface 16 is the same. However, the shape of the notch in these embodiments is contoured and suitable for t...

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PUM

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Abstract

A fastener with a recess head wherein the drive head has four lobular recess channels. Each channel comprises a first wall, a second wall, a bottom surface and a recess sidewall. The first and second walls have portions opposing each other and a constant radius of curvature to form a continuously and smoothly forming wall of the channel. A torque producing driver tool is defined with cross sectional signature substantially complementary in size and shape of the recess of the drive head of the fastener for matable engagement. A recess punch for manufacturing the fastener is also defined and comprises a punch holder and a punch pin integral with the holder.

Description

technical field [0001] The present invention relates to a screw head recess drive and a corresponding drive tool or screwdriver engageable with a screw head recess drive of a screw. Background technique [0002] Advancement systems for all types of small screws (especially for custom-made low profile head height products ranging in size from about 0.4 mm to about 2.0 mm) are generally used for special purpose applications. In this application, the thread and head height of the screw is custom designed to meet the special quality and functional requirements in the joint. For example, deeper recesses are required when the screw head height is designed to be thinner than industry standards such as the Japanese Camera Industry Standard (JCIS), the American National Standards Institute (ANSI), the German Institute for Standardization (DIN), or the International Organization for Standardization (ISO). mouth depth to achieve and transfer higher torques in the coupling. Another ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B23/00B21H3/00B21K1/46B25B23/00B25B29/00B29B15/02F16B27/00F16B35/06
CPCB21K1/463F16B23/003F16B35/041B21K5/20B25B15/005F16B23/00B25B29/00B21H3/00B29B15/02
Inventor 巴拉辛加姆·卡鲁帕亚
Owner UNISTEEL TECH
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