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Sampling needle driving mechanism for biochemical analyzer

A technology of biochemical analyzer and driving mechanism, which is applied in the field of medical testing, can solve problems such as the difficulty of accurate sampling of sampling needles, the shaking of the rocker-driven slider, and the inability to position horizontally, so as to reduce costs, move smoothly, and improve sampling accuracy. Effect

Inactive Publication Date: 2010-08-18
深圳市普康电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sampling needle drive mechanism in the prior art usually has the following disadvantages: it adopts a single guide rail or guide tube, which cannot be positioned horizontally, and it is easy to cause the rocker arm to drive the slider to shake, which brings difficulties to the accurate sampling of the sampling needle, and the existing The guide rail or guide tube and the matching steel ball or bushing are made of metal, which is easy to wear, has high cost, and has high operating noise

Method used

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  • Sampling needle driving mechanism for biochemical analyzer
  • Sampling needle driving mechanism for biochemical analyzer
  • Sampling needle driving mechanism for biochemical analyzer

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Embodiment Construction

[0020] The sampling needle driving mechanism of the biochemical analyzer of this embodiment is as follows: Figure 1-4 As shown, the sampling needle driving mechanism for the biochemical analyzer includes a base 1, a limit baffle 2, a guide shaft 3, a vertical plate 4, and a rocker driving slider 5. The vertical plate 4 is arranged on one side of the base 1, The guide shaft 3 is arranged on the base, and the guide shaft 3 and the riser 4 are parallel to each other and perpendicular to the base 1 . The rocker arm driving slider 5 is used to drive the rocker arm of the sampling needle to move, and a guide hole 6 corresponding to the guide shaft is arranged on it, and a shaft sleeve 7 is arranged in the guide hole 6, and the rocker arm driving slider 5 is connected with the guide shaft through the shaft sleeve 7. Shaft 3 has a small interference fit. In addition, there is a fixed guide groove 8 on the vertical plate 4 in the same direction as the guide shaft 3. The rocker arm dri...

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Abstract

The invention relates to the technical field of medical detection, in particular to a sampling needle driving mechanism. A mechanical mechanism part of the driving mechanism is reset to achieve high accuracy; the driving mechanism comprises a pedestal, at least two guide shafts, a vertical plate and a rocker arm driving slide block, wherein the vertical plate is arranged on one side of the pedestal; the two guide shafts are arranged on the pedestal at interval; the vertical plate and the guide shafts are parallel with each other and are vertical to the pedestal; the rocker arm driving slide block is provided with guide holes corresponding to the guide shafts; and the guide shafts are in interference fit with the guide holes, so the rocker arm driving slide block can slide along the guide shafts under the power action. In the further technical scheme, the guide shafts made of a special material are matched with a shaft sleeve, so that running noise is eliminated, cost is lowered and service cycle is prolonged.

Description

technical field [0001] The invention relates to the technical field of medical detection, in particular to a sampling needle driving mechanism. Background technique [0002] In medical testing, especially in biochemical analyzers, the sampling needle needs to move up and down driven by the sampling needle rocker, and the sampling needle rocker needs to be driven by a dedicated sampling needle drive mechanism. [0003] The Chinese utility model patent specification whose authorized announcement number is CN201368811Y discloses a sampling needle driving mechanism, which is composed of a vertical support, a frame, a stepping motor, a photoelectric sensor, gears and the like. However, the sampling needle drive mechanism in the prior art usually has the following disadvantages: it adopts a single guide rail or guide tube, which cannot be positioned horizontally, and it is easy to cause the rocker arm to drive the slider to shake, which brings difficulties to the accurate sampling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/02G01N33/50
Inventor 李启胜欧泽民
Owner 深圳市普康电子有限公司
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