Gearbox and electric tool provided with same

一种齿轮箱、齿轮的技术，应用在带有齿的元件、齿轮传动装置、制造工具等方向，能够解决易无意间触碰到它、增大误操作、输送轴损坏等问题，达到方便操作切换、延长使用寿命、减少误操作概率的效果

Active Publication Date: 2018-10-09
ZHEJIANG MINGLEI TOOLS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is easy for the staff to accidentally touch it during the operation, which increases the probability of misoperation
When the electric tool works under the condition of high torque, if the speed increases instantaneously, it is easy to cause damage to the conveying shaft

Method used

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  • Gearbox and electric tool provided with same
  • Gearbox and electric tool provided with same
  • Gearbox and electric tool provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A gearbox, as attached figure 1 And attached figure 2 As shown, it includes a shell 1, which is divided into a front shell 1a and a rear shell 1b. The rear shell 1b has a bottom cover 1c at the rear, and the center of the bottom cover 1c has a hole for the output shaft of the motor to pass through. Through hole 1c1. There is a planetary gear set 2 inside the rear housing 1b, the planetary gear set 2 is attached to the bottom cover 1c, and the planetary gears of the planetary gear set 2 are evenly distributed around the through hole 1c1, and can be connected with the motor The output shaft is engaged. Wherein, the number of planetary gears in the second planetary gear set 2 can be selected according to the actual situation, here it is three. In addition, an inner gear 2 3 is sheathed on the outer side of the planetary gear set 2 , and the inner gear 2 3 is fixed to the rear casing 1 b.

[0055] Furthermore, as attached image 3 As shown, there is also a double-laye...

Embodiment 2

[0069] A gearbox, as attached Figure 11 As shown, based on the first embodiment, the side of the projection 9b facing the ejector pin 7b has a concave arc surface 9b1, and the end of the ejector pin 7b is a spherical surface 7b1. Here, the concave arc surface 9b1 matches the end of the ejector pin 7b, so that when the protrusion 9b pushes against the ejector pin 7b, the concave arc surface 9b1 restricts the ejector pin 7b, thereby effectively ensuring the concave arc surface The limitation of 9b1 on the ejector pin 7b avoids the problem of the gear box being out of gear during the high-speed output process.

Embodiment 3

[0071] A gearbox, as attached Figure 12 As shown, the only difference between it and the second embodiment is that the side of the protrusion 9b facing the ejector pin 7b has a tapered groove 9b2, and the end of the ejector pin 7b is tapered 7b2. In this way, the tapered groove 9b2 can match the end of the ejector pin 7b, so that on the one hand, the ejector pin 7b can smoothly slide into the tapered groove 9b2, and on the other hand, the tapered groove 9b2 can also limit the ejector pin 7b. The function ensures that the ejector pin 7b and the protrusion 9b can be kept stable during the high-speed output of the gearbox.

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PUM

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Abstract

The invention discloses a gearbox, and relates to the field of electric tools. Lifting pins are pushed through torque, an internal gear is driven to be switched between a first planetary gear set anda two-layer gear, accordingly, switching of corresponding functions under different requirements can be facilitated, in addition, mal-operation incidents can be decreased, and the safety performance of an electric tool provided with the gearbox is improved.

Description

technical field [0001] The invention relates to the field of electric tools, in particular to a gear box and an electric tool with the gear box. Background technique [0002] The gearbox is one of the main core components of the electric tool, and its main function is to provide the power required for the rotation of the electric tool. Because the existing power tools are more convenient for the staff to use, they all possess multifunctionality, that is, they can be used for both drilling and screwing. [0003] In order to be able to realize the above-mentioned operation functions, when the company produces the gearbox, it will also make certain structural improvements to the gearbox, that is, a speed change mechanism and a torque cup are installed on the gearbox at the same time, so as to realize the interaction of various functions. switch between. [0004] For example, the Chinese patent application number 201120271287.3 discloses an improved structure for switching bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/64F16H57/023F16D43/20B25F5/00
CPCF16D43/20F16H3/64F16H57/023B25F5/00F16H2057/02039F16H2057/02034B25F5/001F16H2200/2035F16H2200/0034F16H3/54F16H35/10F16H2200/2033F16H2200/2064F16H2200/2094F16H1/2818F16H3/56F16H3/72F16H61/686F16H2200/2007F16H2200/2097
Inventor 翁磊欧阳智
Owner ZHEJIANG MINGLEI TOOLS IND
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