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Impact ratchet wrench

An impact ratchet and ratchet wrench technology, applied in the ratchet wrench field, can solve the problems of affecting the scope of use, low work efficiency, inconvenient use, etc., and achieve the effect of compact overall structure, suitable for portability, and small ratchet structure size

Inactive Publication Date: 2012-10-24
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These ratchet wrenches all have shortcomings such as inconvenient use, small torque, or low work efficiency, which affect their scope of use.

Method used

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  • Impact ratchet wrench
  • Impact ratchet wrench
  • Impact ratchet wrench

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0024] Such as figure 1 - Figure 4 As shown, the impact ratchet wrench of the present invention includes a battery assembly 5A, a motor assembly 4A, a transmission assembly 3A, an impact assembly 2A, a ratchet assembly 1A and an accessory system (not shown).

[0025] The battery assembly 5A is composed of ordinary rechargeable batteries, which provide energy for the motor assembly 4A, which has the characteristics of high efficiency and small size;

[0026] The motor assembly 4A consists of a DC motor, which provides power for the entire system;

[0027] The transmission assembly 3A is composed of intermeshing gears, which can have the function of switching the transmission ratio, and conver...

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PUM

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Abstract

The invention discloses an impact ratchet wrench, which comprises a shell; the impact ratchet wrench further comprises a motor assembly, a transmission assembly, an impact assembly and a ratchet assembly, wherein the motor assembly, the transmission assembly, the impact assembly and the ratchet assembly are arranged inside the shell and are connected sequentially; the transmission assembly comprises a cylindrical gear train and is used for outputting a first rotation speed and a second rotation speed through gears in the gear train in a mode of transmission; the second rotation speed is lower than the first rotation speed; the impact assembly comprises an attacking piece and an output piece; and the attacking piece is used for intermittently providing increased torque to the output piece. With the adoption of the impact ratchet wrench, large torque desired by a fastening bolt is provided by an impact mechanism, so that relatively large fastening force is provided; a ratchet structure at the head part is small in size, so that the impact ratchet wrench is applicable for more working conditions; and the impact ratchet wrench is supplied with power through a battery, and is small in overall structure, light and applicable to carry over.

Description

technical field [0001] The invention relates to a fastening tool, in particular to a ratchet wrench. Background technique [0002] When tightening or loosening fasteners, tools such as manual ratchet wrench and pneumatic ratchet wrench are often used to reduce manpower and meet torque requirements. These ratchet wrenches all have shortcomings such as inconvenient use, small torque, or low work efficiency, which affect their range of use. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an impact ratchet wrench, which has the characteristics of small size, light weight, large torque and wide application range, and can be carried in the field, basement or various narrow spaces. [0004] In order to solve the above technical problems, the present invention provides an impact ratchet wrench, which includes a casing, and is characterized in that it also includes a motor assembly, a transmission assembly, an impact ass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B21/02
CPCB25B21/004B25B21/026B25B21/02
Inventor 陈亮
Owner NANJING CHERVON IND
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