Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dart whose empennage can stretch bidirectionally

A technology of tail and darts, applied in the field of darts, can solve problems such as dart damage, and achieve the effects of low production cost, reduced production cost and long service life

Pending Publication Date: 2018-11-30
陈档财
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There will be a large stress on the two darts due to the collision, and if such a collision occurs repeatedly, the darts will also be damaged due to fatigue damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dart whose empennage can stretch bidirectionally
  • Dart whose empennage can stretch bidirectionally
  • Dart whose empennage can stretch bidirectionally

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0024] see Figure 1 to Figure 5 According to the embodiment of the dart with two-way stretchable empennage provided by the present invention, it comprises a dart shaft, a dart head 3 arranged at the front end of the dart shaft, and an empennage arranged at the rear end of the dart shaft, and the empennage is movably arranged on the dart shaft. On the dart shaft, the rear end of the dart shaft is provided with an empennage connecting portion 4, the empennage inc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a dart whose empennage can stretch bidirectionally. The dart comprises a dart rod, a dart head arranged on the front end of the dart rod, and an empennage arranged on the rear end of the dart rod. The rear end of the dart rod is provided with an empennage connecting portion. The empennage comprises a sleeve. The empennage connecting portion is sleeved with a squeezing ring. The squeezing ring is provided with a clamping bulge. An inner wall of the sleeve is provided with a clamping groove. One side of the squeezing ring is provided with a first elastic piece, and the other side ofthe squeezing ring is provided with a second elastic piece. Compared with the prior art, the dart whose empennage can stretch bidirectionally has the following advantages, the empennage can rotate onthe empennage connecting portion, and has a bidirectional expansion function. When active collision or passive collision occurs, the dart can buffer force strength through rotating and stretching theempennage. Compared with the prior art, crashworthiness of the empennage is better, damage probability is low, and service life is long. The dart is simple in structure, convenient in assembly, and low in production cost.

Description

technical field [0001] The invention relates to a dart in the dart movement, in particular to a dart with bidirectional retractable tail. Background technique [0002] Darts is an indoor sport that is popular all over the world. It is an easy-to-carry out leisure sport that combines fun and competition. In recent years, darts has become more professional, with professional associations, professional competitions and a large number of professional athletes appearing. With the generalization and professionalization of darts, users have higher requirements for the quality and practicality of darts. [0003] Generally speaking, in a darts match, sometimes the dart thrown first hits the target, and the next dart is thrown. At this time, it often hits the dart that has already hit the target. . A large stress will be generated on the two darts due to the collision, and if such a collision occurs repeatedly, the darts will also be damaged due to fatigue damage. Contents of the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A63F9/02F42B6/00F42B10/12
CPCA63F9/02F42B6/00F42B10/12
Inventor 陈档财
Owner 陈档财
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com