CN202462546U

CN202462546U - Wood chisel

Info

Publication number: CN202462546U
Application number: CN2012200445389U
Authority: CN
Inventors: 吴克军
Original assignee: NINGBO TIANGONG LING YI TOOLS CO Ltd
Current assignee: NINGBO TIANGONG LING YI TOOLS CO Ltd
Priority date: 2012-02-13
Filing date: 2012-02-13
Publication date: 2012-10-03
Anticipated expiration: 2022-02-13

Abstract

The utility model discloses a wood chisel, and aims to provide a wood chisel which is high in strength, safe and reliable to use and long in service life. The wood chisel comprises a blade and a handle. The handle is provided with a through hole penetrating through the front end and the rear end of the handle. One end of the blade is arranged inside the through hole at the front end of the handle. A T-shaped tail nail is arranged at the through hole at the rear end of the handle. A support rod is arranged between the tail nail and the blade inside the through hole. One end of the support rod is abutted to the blade, and the other end of the support rod is abutted to the tail nail.

Description

A kind of firmer chisel

Technical field

The utility model relates to a kind of five metals hand-operated tools, is specifically related to a kind of firmer chisel that improves structure.

Background technology

Present firmer chisel generally is made up of chisel 1 and cutter handle 2, and the end of chisel generally is provided with a cutter pin 5, and the cutter pin is located in the cutter handle and is cooperated closely with the cutter handle, and chisel and cutter handle are connected as a single entity, and is as shown in Figure 2.Because firmer chisel is when work; General all is the cutter handle end that directly knocks firmer chisel with hammer; The percussion power of hammer is delivered to the chisel place of firmer chisel by the cutter handle of firmer chisel; And the percussion power of hammer is bigger, and this makes the firmer chisel of prior art have following deficiency: the cutter handle of firmer chisel damages receiving when knocking easily, reduces the service life of firmer chisel; In addition if the cutter handle of firmer chisel receiving when knocking, is easy to cause operator's hand to come to harm in case cracking is damaged.

The utility model content

The purpose of the utility model is to damage easily receiving when knocking for the cutter handle of the firmer chisel that overcomes prior art; Reduce the service life of firmer chisel; The cutter handle of firmer chisel is when knocking simultaneously; In case the problem that cracking is damaged to be prone to cause operator's hand to come to harm provides the firmer chisel that a kind of intensity is good, safe and reliable, the life-span is long.

The technical scheme of the utility model is:

A kind of firmer chisel comprises chisel and cutter handle, and the cutter handle is provided with the through hole of the handle front/rear end of always giving a farfetched interpretation; Said chisel one end is located in the cutter handle front end through hole; One be the T font tail nail be located at the through hole of cutter handle rear end; Between tail nail and chisel, be provided with support bar in the said through hole; Support bar one end supports and chisel, and the other end supports and the tail nail.The cutter handle of firmer chisel in use mainly plays one and is convenient to the effect that the operator grips in this programme; And when hammer knocked the cutter handle end of firmer chisel, the cutter handle did not play the effect of transmitting percussion power.When hammer knocked the cutter handle end of firmer chisel, percussion power was to be delivered on the chisel through support bar by the tail nail, and it is just not fragile to cut a hole handle like this, can improve the service life of firmer chisel and the chisel and the bonding strength of cutting a hole handle of firmer chisel; Use also more safe and reliable simultaneously.

As preferably, tail nail end face is provided with first blind hole, is provided with first push rod with the relative support bar end face of tail nail, and said first push rod is located in first blind hole and is supported and the first blind hole bottom surface.Can carry out spacingly through this structure to support bar, percussion power can better be transmitted.

As preferably, the support bar end face relative with chisel is provided with second blind hole; The chisel end relative with support bar is provided with second push rod; Said second push rod is located in second blind hole and is supported and the second blind hole bottom surface.Can carry out spacingly through this structure to support bar, percussion power can better be transmitted.

As preferably, the cross section of second blind hole is polygon-shaped, and it is polygon-shaped that the cross section of said second push rod also is.Can prevent that through this structure support bar from rotating, improve structural strength.

As preferably, chisel comprises cutter portion, neck and cutter pin; Said neck is round table-like, is connected through arc transition between said cutter portion and the neck front end; Said cutter pin is column and is located on the neck rear end face, and said cutter pin is located in the cutter handle front end through hole.Owing to be connected through arc transition between cutter portion and the neck front end, it is concentrated when the transmission percussion power, can not produce stress.Neck is round table-like can save material, reduces cost.

As preferably, through hole is a shoulder hole, and the through hole cross section is that circle and through hole cross-sectional area are reduced by cutter handle rear end forward end gradually, and the via openings edge on the cutter handle rear end face is provided with chamfering.

The beneficial effect of the utility model is: have the advantages that intensity is good, safe and reliable, the life-span is long.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is a kind of structural representation of prior art.

Among the figure: chisel 1, cutter handle 2, tail nail 3, support bar 4, cutter pin 5, neck 6.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

As shown in Figure 1, a kind of firmer chisel comprises chisel 1 and cutter handle 2.Chisel 1 comprises cutter portion, neck 6 and cutter pin 5.Said neck 6 is round table-like, is connected through arc transition between said cutter portion and the neck front end; Said cutter pin is column and is located on the neck rear end face.Cutter handle 2 is provided with the through hole of the handle front/rear end of always giving a farfetched interpretation.Said through hole is a shoulder hole, and the through hole cross section is that circle and through hole cross-sectional area are reduced by cutter handle rear end forward end gradually, and the via openings edge on the cutter handle rear end face is provided with chamfering.Also be provided with the lines that is used to shake hands on the surface of cutter handle 2.

One end of chisel is located in the cutter handle 2 front end through holes; Be specifically, the cutter pin 5 of chisel is located in the cutter handle 2 front end through holes, and neck 6 rear end faces support and cutter handle front end face.One be the T font tail nail 3 be located at the through hole of cutter handle rear end; Between tail nail and chisel, be provided with support bar 4 in the said through hole.Support bar 4 one ends support and chisel, and the other end supports and the tail nail.Said tail is followed closely 3 end faces and is provided with first blind hole, is provided with first push rod with relative support bar 4 end faces of tail nail, and said first push rod is located in first blind hole and is supported and the first blind hole bottom surface.Support bar 4 end faces relative with chisel are provided with second blind hole.The chisel end relative with support bar is provided with second push rod, is specifically, and the end of the cutter pin 5 of chisel is provided with second push rod.Second push rod is located in second blind hole and is supported and the second blind hole bottom surface.The cross section of second blind hole is polygon-shaped, and the cross section of the cross section of said second push rod and second blind hole is corresponding also to be polygon-shaped.

In the course of the work, when hammer knocks the cutter handle 2 of firmer chisel when terminal, the transmittance process of the percussion power that firmer chisel receives is: be delivered on the chisel 1 through support bar 4 by tail nail 3.The firmer chisel of this programme in the course of the work, the cutter handle of firmer chisel mainly plays one and is convenient to the effect that the operator grips, and does not play the effect of transmitting percussion power; Therefore, the cutter handle is just not fragile, uses more safe and reliable yet.

Claims

1. a firmer chisel comprises chisel and cutter handle, it is characterized in that the cutter handle is provided with the through hole of the handle front/rear end of always giving a farfetched interpretation; Said chisel one end is located in the cutter handle front end through hole; One be the T font tail nail be located at the through hole of cutter handle rear end; Between tail nail and chisel, be provided with support bar in the said through hole; Support bar one end supports and chisel, and the other end supports and the tail nail.

2. a kind of firmer chisel according to claim 1 is characterized in that, said tail nail end face is provided with first blind hole, is provided with first push rod with the relative support bar end face of tail nail, and said first push rod is located in first blind hole and is supported and the first blind hole bottom surface.

3. a kind of firmer chisel according to claim 1 and 2 is characterized in that, the support bar end face relative with chisel is provided with second blind hole; The chisel end relative with support bar is provided with second push rod; Said second push rod is located in second blind hole and is supported and the second blind hole bottom surface.

4. a kind of firmer chisel according to claim 3 is characterized in that the cross section of said second blind hole is polygon-shaped, and it is polygon-shaped that the cross section of said second push rod also is.

5. a kind of firmer chisel according to claim 1 and 2 is characterized in that, said chisel comprises cutter portion, neck and cutter pin; Said neck is round table-like, is connected through arc transition between said cutter portion and the neck front end; Said cutter pin is column and is located on the neck rear end face, and said cutter pin is located in the cutter handle front end through hole.

6. a kind of firmer chisel according to claim 1 and 2 is characterized in that, said through hole is a shoulder hole, and the through hole cross section is that circle and through hole cross-sectional area are reduced by cutter handle rear end forward end gradually, and the via openings edge on the cutter handle rear end face is provided with chamfering.