CN201525001U

CN201525001U - Improved electric hammer

Info

Publication number: CN201525001U
Application number: CN2009202848490U
Authority: CN
Inventors: 李东昇
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-29
Filing date: 2009-12-29
Publication date: 2010-07-14
Anticipated expiration: 2019-12-29

Abstract

The utility model discloses an improved electric hammer which comprises an impact device and a hammer body, wherein the impact device consists of a cylinder, a sheath and an auxiliary hammer; the auxiliary hammer is in sliding fit with the inner wall of the sheath; and the sheath is arranged inside the cylinder. The improved electric hammer is characterized in that the rear end part of the auxiliary hammer is provided with a stepped end surface; a sliding clearance is formed between the stepped end surface and the inner wall of the sheath; the inner wall of the tail part of the sheath is provided with a clamp spring slot; a clamp spring higher than the inner wall of the sheath is clamped in the clamp spring slot; a movement stroke is formed between the clamp spring and the stepped end surface; and a clearance is arranged between the clamp spring and the auxiliary hammer. The improved electric hammer has the advantages of reducing abrasion, leading inner holes of the cylinder not to be clamped with the periphery of the sheath, improving the working efficiency, reducing cost, increasing the safety coefficient and simplifying the manufacture procedures.

Description

A kind of improved electric hammer

Technical field

The utility model relates to a kind of improved electric hammer.

Background technology

Existing electric hammer is to place at the cylinder inner face not go out sheath when steel ball is used to guarantee that secondary hammer comes repercussion in sheath, as shown in Figure 1.But because the impact before and after the meeting when machine uses of secondary hammer makes corresponding the moving up and down of steel ball brush up against the cylinder inner face, steel ball is cylinder inner face hacking, causes between cylinder and the sheath stuckly, causes and do not impact.Shorten service life, increases the maintenance cost of electric hammer; Also have is exactly to place steel ball at the cylinder inner face to be difficult to processing, manufacturing cost height.

Summary of the invention

The purpose of this utility model provides a kind of improved electric hammer, to improve the service life of electric hammer.

The technical solution adopted in the utility model is:

A kind of improved electric hammer, comprise percussion mechanism and fuselage, described percussion mechanism comprises cylinder, sheath and secondary hammer, described secondary hammer is slidingly matched with jacket inner wall, described sheath places cylinder interior, the rearward end of described secondary hammer is provided with the ladder end face, form glade plane space between the inwall of this ladder end face and sheath, the inwall of described sheath afterbody is provided with the jump ring groove, card has the jump ring that exceeds jacket inner wall in this jump ring groove, form a movement travel between described jump ring and the ladder end face, leave the gap between described jump ring and the secondary hammer.

The utility model is provided with the ladder end face in the rearward end of pair hammer, and and the inwall of sheath between leave glade plane space, on the inwall of sheath afterbody, be provided with the jump ring groove, be provided with the jump ring that exceeds jacket inner wall in this jump ring groove, form a movement travel between described jump ring and the ladder end face, leave the gap between this jump ring and the secondary hammer.When guaranteeing that so secondary hammer moves back and forth in sheath, under the effect of jump ring, be unlikely to go out sheath.

The utility model has the advantages that: the utility model has the advantages that: reduce wear, make cylinder bore and sheath cylindrical not stuck, increase work efficiency, reduce cost, increase safety coefficient, simplify manufacturing process.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the structural representation of the percussion mechanism of existing electric hammer.

Fig. 2 is an overall structure schematic diagram of the present utility model.

Fig. 3 is the structural representation of the utility model percussion mechanism.

Fig. 4 is the utility model sheath and the secondary structural representation of hammering into shape.

Fig. 5 is an A place partial enlarged drawing among Fig. 4.

Wherein: 1, percussion mechanism, 2, fuselage, 3, cylinder, 4, sheath, 5, secondary hammer, 6, the jump ring groove, 7, jump ring, 8, steel ball, 9, the ladder end face.

The specific embodiment:

Shown in Fig. 2 to 5, a kind of improved electric hammer described in the utility model, comprise percussion mechanism 1 and fuselage 2, percussion mechanism comprises cylinder 3, sheath 4 and secondary hammer 5, secondary hammer 5 is slidingly matched with sheath 4 inwalls, sheath 4 places cylinder 3 inside, the rearward end of secondary hammer 5 is provided with ladder end face 9, form glade plane space between the inwall of this ladder end face 9 and sheath 4, the inwall of sheath 4 afterbodys is provided with jump ring groove 6, card has the jump ring 7 that exceeds jacket inner wall in this jump ring groove 6, forms a movement travel between jump ring 7 and the ladder end face 9, leaves the gap between jump ring 7 and the secondary hammer 5.The secondary hammer 5 of block stamp of the present utility model bump moves back and forth, and the ladder end face 9 of jump ring 7 and secondary hammer 5 stops when combining pair hammer 5 being moved back and forth, and goes out sheath 4 to prevent secondary hammer 5.

The utility model is applicable to 26 type electric hammers, two function electric hammers and three function electric hammer etc.

Claims

1. improved electric hammer, comprise percussion mechanism and fuselage, described percussion mechanism comprises cylinder, sheath and secondary hammer, described secondary hammer is slidingly matched with jacket inner wall, described sheath places cylinder interior, it is characterized in that: the rearward end of described secondary hammer is provided with the ladder end face, form glade plane space between the inwall of this ladder end face and sheath, the inwall of described sheath afterbody is provided with the jump ring groove, card has the jump ring that exceeds jacket inner wall in this jump ring groove, form a movement travel between described jump ring and the ladder end face, leave the gap between described jump ring and the secondary hammer.