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Screwing cylinder type tennis ball ejection device

A catapult device, the technology of the power cylinder, which is applied in the field of the catapult device for tennis practice and the power cylinder type tennis catapult device, can solve the problems of waste, equipment idleness, etc., and achieve the effect of increasing practice intensity, increasing concentration and avoiding mistakes

Inactive Publication Date: 2012-10-03
黄剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Personal purchases are still relatively small, because the equipment will be idle after mastering the technical movements, and it is obviously a bit wasteful after a one-time investment
If it is purchased collectively, it will bring a lot of trouble and inconvenience to use and manage the expensive equipment

Method used

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  • Screwing cylinder type tennis ball ejection device
  • Screwing cylinder type tennis ball ejection device
  • Screwing cylinder type tennis ball ejection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Figure 1-Figure 2 It is a specific structural form of the present invention. It comprises a tennis temporary storage cabin 1 and a tennis ejection cabin 2. One end of the tennis temporary storage cabin 1 is provided with a tennis inlet 3, and the other end is provided with a ball sending device 4, which is a spring assembly. The above-mentioned tennis ball ejection chamber 2 includes: an ejection chamber shell 11, an upper power cylinder 13 installed in the ejection chamber shell 11 through a one-way bearing 12, and an ear piece 14 fixedly installed in the upper power cylinder 13; it also includes: a fixed connection with the bottom of the ejection chamber The support member 17, the lower block 16 installed on the support member through the vertical guide mechanism, the ramp slider 15 installed on the lower block 16 through the bidirectional bearing 21, the lower block 16 and the ramp slider 15 A coil spring 20 is installed between them; the upper cylinder 13 and the...

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PUM

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Abstract

The invention relates to a screwing cylinder type tennis ball ejection device which belongs to the technical field of ejection devices for tennis training. The screwing cylinder type tennis ball ejection device comprises a tennis ball temporary storage bin (1) and an ejection bin (2), wherein the ejection bin (2) comprises an ejection bin shell (11), a one-way bearing (12), a screwing sleeve (13), a lug piece (14), a slope sliding block (15), a lower sliding block (16), a supporting piece (17), a spring (19), a coil spring (20), a two-way bearing (21), a button or bolt (22). The screwing cylinder type tennis ball ejection device has the advantages of simple structure and low cost.

Description

Technical field [0001] The invention relates to a lifting cylinder type tennis ejection device, which belongs to the field of sporting goods, in particular to an ejection device for tennis practice. Background technique [0002] The present invention is a tennis ball ejection device, and the prior art closest to the present invention has the following types: multifunctional tennis ball machine (patent number: 95205606.2), tennis throwing device (patent number: 96222872.9), a tennis practice Device (patent number: 96215081.9), tennis sparring device (patent number: 96241893.5), tennis training device (patent number: 97203045.X), single-person self-entertainment netless tennis (patent number: 200320104620.7), tennis ball throwing training device ( Patent No.: 200310106676.0), Electronic Tennis Exerciser (Patent No.: 200510023889.6), Tennis Serving Machine for Training (Patent No.: 200620090512.2), Energy Storage Serving Machine (Patent No.: 200620097178.3), Continuous High Spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B69/38A63B69/40
Inventor 黄剑
Owner 黄剑
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