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Extension rod and power tool with same

A technology for power tools and extension rods, applied in the field of extension rods, can solve problems such as extension rod shaking, power connection disconnection, power tool work is difficult to control, etc., to achieve the effect of reducing shaking and easy control

Active Publication Date: 2015-09-23
SKYBEST ELECTRIC APPLIANCE SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The electric tool disclosed in the above-mentioned patent is provided with at least a plurality of rod parts, and the power supply and the electric tool are connected through a plurality of connecting parts. The rod shakes during use, especially when the weight of the power tool installed at the end of the extension rod is heavy, or when the power tool itself has a large impact on the extension rod during operation
This shaking can cause disconnection of the electrical connection between the rods, poor contact between the plugs and sockets between the rods so that the power tool cannot work properly, and it can also make it difficult to operate the power tool, and it is difficult to control the power tool when it is working

Method used

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  • Extension rod and power tool with same
  • Extension rod and power tool with same
  • Extension rod and power tool with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0030] Such as figure 1 The power tool shown has a long rod composed of a plurality of connecting rods 1, and the rods are connected to each other using a first joint 20 and a second joint 21. In the figure, three rods are used, in order to lengthen or shorten the length of the power tool. There can also be more or less rods in length. The length of the plurality of rods connected to each other is approximately equal to the sum of the lengths of the rods, and the rods are made of light-weight and high-strength materials, such as aluminum alloy. The upper end of long bar is connected with working head 2, and working head is conventional power saw, but working head is not limited to power saw and can also be other common power tools such as pruning machine. Power saw comprises working saw blade 4 and the motor that drives saw blade, and motor is arranged on the lower position of fuselage. The power of the motor comes from the battery pack 4 arranged at the lower end of the lon...

specific Embodiment approach 2

[0037] refer to Figure 6 , different from Embodiment 1, the tapered surfaces 30 at both ends of the second guide ring 32 are convex, and the tapered surfaces are arranged on the outer surface of the guide ring. The tapered surfaces of the adjacent ends of the first and third guide rings and the second guide ring 32 are concave, and the tapered surfaces are arranged on the inner surfaces of the guide rings. The first guide ring 31 and the third guide ring 33 are provided with the same gaps as those in the first embodiment. In order to facilitate assembly, the notch 34 is optionally provided on the second guide ring 32 , and the second guide ring 32 may not be provided with a notch. Rotate the main fastener 27, the main fastener 27 pulls the auxiliary fastener 28 and the guide rod to the sleeve pipe 25, due to the limiting effect of the socket 19 outer ring and the inwardly extending wall 281 of the auxiliary fastener 28, the first The second guide ring 32 is clamped with the...

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Abstract

Disclosed are an extension rod and a power tool having the extension rod. The extension rod comprises multiple rod portions (1), with the rods connected via a first connector (20) and a second connector (21); the second connector has a sleeve (25) and a primary fastener (27), the first connector is provided with a guide rod (110) capable of being inserted into the sleeve, and the first connector is also provided with a secondary fastener (28) engaging with the primary fastener; a first guide ring (31), a second guide ring (32) and a third guide ring (33) are provided between the guide rod and the sleeve; the first guide ring, the second guide ring and the third guide ring are provided with an adjoining conical face (30); and at least one of the guide rings is provided with a notch (34). The power tool is equipped with a working head (2) on an end of the rod, an assembly for controlling the work of the power part is mounted on the rod, and an operating handle (15) is further provided on the rod. The extension rod and the power tool can reduce rocking in the course of use and prevent the electrical connection between rods from being broken during use.

Description

technical field [0001] The invention relates to an extension rod for extending a power tool, and an electric tool using the extension rod. Background technique [0002] Power tools, such as pruning saws and pruning tools of pruning shears, are often used for cutting and trimming trees and shrubs. For ease of use, such tools can usually be extended in height through extension rods so as to trim shrubs and branches that cannot be reached by the human body, so that the operator does not need to use tools such as ladders to operate conveniently. Usually the power part is set at the end of the extension rod. When in use, the operator holds the other end of the tool to lift the power tool including the extension rod for operation. The extension rod is set at the end close to the operator to control the work of the power tool. In order to avoid the "top-heavy" phenomenon, the existing power tools usually set the energy supply device at the other end of the pole opposite to the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G3/08
CPCA01G3/08A01G3/0255A01G3/085B25F5/02B25G1/04
Inventor 卞小贤李建新
Owner SKYBEST ELECTRIC APPLIANCE SUZHOU CO LTD