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Handhold type striking tool

A hand-held, tool-based technology, applied in nailing tools, manufacturing tools, etc., can solve problems such as out-of-control action of firing pins, damage to transmission parts, and potential safety hazards, so as to avoid out-of-control actions and ensure safe operation

Active Publication Date: 2019-09-20
NANJING TENGYA PRECISE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it has been found in practice that when the nail gun is occasionally jammed due to various reasons during the operation of this nail gun, no matter whether the driving wheel is figure 1 gear drive shown, or figure 2 The toothed pin transmission shown, because the striker 4 is blocked and has not moved to figure 1 The normal limit position shown by the dotted line, so the gear teeth of the drive wheel 9 may interfere with the striker when it is lifted again, that is, it is blocked and cannot enter the meshing state. , and because the air in the cylinder still has a certain pressure, once the staple is removed, the striker will move out of control, resulting in a safety hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The basic structure of the hand-held hitting tool of the present embodiment is as follows: image 3 As shown, the rear end of the housing 1 is equipped with an energy storage mechanism 2 composed of a cylinder 2-2 and a piston 2-1, and the piston 2-1 is fixedly connected with the firing pin 4 extending to the gun mouth 3. The underside of the cylinder block 2-2 is provided with a handle 5, the underside of the gun mouth 3 is provided with a nail box 6 for arranging nails, and a lifting mechanism 7 at the top is provided between the handle 5 and the nail box 6.

[0025] For the specific structure of the lifting mechanism, see Figure 4 and Figure 5 As shown, it contains striker 4 with meshing teeth distributed at intervals in the length direction, and a drive wheel 9 with meshing projections distributed at predetermined arc length intervals in the circumferential direction, which is in transmission connection with the motor 8 that provides electric energy from the batt...

Embodiment 2

[0029] The basic structure of the hand-held hitting tool in this embodiment is the same as that of Embodiment 1, the difference lies in its lifting mechanism such as Figure 9 As shown, the height of the first engagement protrusion 9-1 (that is, the first engagement protrusion entering into the lifting engagement) of the driving wheel 9 lifting transmission is smaller than other engagement protrusions, and has a circular arc top, which can not only ensure the required meshing transmission, and even when the striker Figure 8 In the case of the more serious abnormal misalignment shown, it can also avoid interference completely and naturally, ensuring normal meshing and safe operation.

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PUM

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Abstract

The invention relates to a handhold type striking tool, and belongs to the technical field of electric tools. The tool comprises an energy storing mechanism which consists of a cylinder body in a housing and a piston, wherein the piston is fixedly connected to a striking pin which extends to a gun port; a holding handle is arranged at one side of the cylinder body; a pin case is arranged at one side of the gun port; a lifting mechanism is arranged between the holding handle and the pin case; the lifting mechanism comprises a striking pin and a driving wheel; engaging teeth are distributed at intervals on the striking pin in the length direction; engaging bumps are circumferentially distributed at intervals in the preset arc length direction; the driving wheel is in transmission connection with a motor, and a battery package supplies power to the motor. The handhold type striking tool further comprises an intermediate wheel; engaging pins are circumferentially distributed on the intermediate wheel; the diameter of an engaging circle of the intermediate wheel is less than the diameter of an engaging circle of the driving wheel; and the driving wheel is in intermittent engaging transmission with the striking pin through the intermediate wheel. With the adoption of the handhold type striking tool, the striking pin is effectively prevented from acting out of control, and thus the operation safety is ensured.

Description

technical field [0001] The invention relates to a hand-held fastener driving tool, in particular to an electric gas spring nail gun, which belongs to the technical field of electric tools. Background technique [0002] As far as the applicant knows, for a long time, tools for fixing one object to another with the aid of nail-type fasteners have been mainly pneumatic, including high-pressure gas, gas combustion, etc., which are not only expensive, but also have potential safety hazards. For this reason, an electric gas spring nail gun has appeared in recent years, and its latest typical structure is disclosed by the Chinese patent application number CN201711108510.0 and the US patent document application number US2018 / 0036870. This type of nail gun is driven by the motor to rotate the missing tooth to give way to the driving wheel, and then lifts the firing pin meshed with it, and stores energy through the piston compressing the air in the cylinder. Afterwards, when the driv...

Claims

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Application Information

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IPC IPC(8): B25C1/06
CPCB25C1/06
Inventor 高冬生常凤智朱清华王爱国
Owner NANJING TENGYA PRECISE TECH DEV CO LTD