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Hammer drill and a lubricant system for the hammer drill

A technology of percussion drilling and lubricating oil, applied in the field of percussion drilling

Inactive Publication Date: 2008-01-02
BLACK & DECKER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This adds an additional component that requires interior space inside the pavement breaker as well as the need to set up the power source needed to drive the pump

Method used

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  • Hammer drill and a lubricant system for the hammer drill
  • Hammer drill and a lubricant system for the hammer drill
  • Hammer drill and a lubricant system for the hammer drill

Examples

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Embodiment Construction

[0104] Although the tools in the embodiments of this specification may be cutting tools or other cutting tools, they are all referred to as cutting tools in the specification to avoid redundancy. However, "cutting tool" is used interchangeably with "cutting tool" in this specification.

[0105] In this specification, the technical features in the tool and cutting tool holders described above and in FIGS. 1-6 also exist in the road breaker described in this embodiment. In the description of each embodiment, the same reference numerals are also used, and the conventional designs thereof are automatically introduced here without repeating them. However, when the new technical features of the present invention are similar to but not identical to the above-mentioned technical features, new reference numerals are assigned and introduced hereinafter. Therefore, unless otherwise stated, new technical features will also have new reference signs.

[0106] Referring to Fig. 7, the pave...

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Abstract

A hammer drill comprising: a housing; a cutting tool holder mounted in the housing; a piston (50) and a ram (54); a drive mechanism which converts the rotary output of the motor (32) into a reciprocating motion of the piston (50); lubrication fluid covering at least part of the drive mechanism; wherein the drive mechanism comprises: A) a crank mechanism comprising: a crank shaft (38) rotationally driven by the motor (32); and a drive pin (40) eccentrically mounted via a support structure (42) on the drive shaft (38); B) a con rod (48), one end of which being connected to the drive pin (40) via a bearing (334), the other end being connected to the piston (50); wherein there is further provided a guide mechanism (318), in the form of a groove in the support structure which extends away from the base of the drive pin (40) towards the longitudinal axis (46) of rotation of the crank shaft (38), to direct the movement of a part of some of the lubricating fluid towards the bearing (334), the movement of that lubrication fluid being caused by the centrifugal forces acting on that lubrication fluid generated by the rotation of the crank shaft (38).

Description

technical field [0001] The invention relates to an impact drill, in particular to a road breaker. In particular, the present invention relates to a lubrication system for a hammer drill or a road breaker and a hammer drill or a road breaker with a lubrication pump. Background technique [0002] Hammer drills typically have three modes of operation. Such hammer drills generally include a rotatable spindle (or spindle) mounted within a housing that can be selectively driven by a rotary drive disposed within the housing. The rotary drive is driven by a motor also located within the housing. The spindle rotationally drives a cutting tool holder of the hammer drill, which in turn rotationally drives a cutting tool, such as a drill bit, releasably secured in the holder. , inside the mandrel is usually mounted a piston that can be reciprocally driven by an impact drive mechanism that converts the rotational drive of the motor into a reciprocating drive of the piston. A plunger ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25D17/26B25D11/12E01C23/12
Inventor 安地列·腓特烈法兰提赛克·哈查尔
Owner BLACK & DECKER INC