CN201744737U

CN201744737U - Saw

Info

Publication number: CN201744737U
Application number: CN2010201377958U
Authority: CN
Inventors: 俞育铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-19
Filing date: 2010-03-19
Publication date: 2011-02-16
Anticipated expiration: 2020-03-19

Abstract

A saw comprises a saw log (4) and a saw blade (5); the front end of the saw blade (5) is detachably connected with the front end of the saw log (4); and the tail end of the saw blade (5) is connected with a fastening device arranged at the tail end of the saw log (4). The saw is characterized in that the fastening device comprises a movable pull rod (3), a handheld grip (2) provides with a through hole in the axial direction, and a clamp nut (1); the front end of the movable pull rod (3) is detachably connected with the tail end of the saw blade (5) together; the tail end of the movable pull rod (3) loosely penetrates the through hole at the tail end of the saw log (4) and the axial through hole of the handheld grip (2) in sequence, and is in threaded connection with and fastened with the clamp nut (1) together. Compared with the prior art, the utility model has the advantages that the saw can adjust the tightness of fixing the saw blade on the saw log; when the saw needs to turn during sawing the narrower saw blade, the saw blade can be loosened to prevent the saw blade from fracturing due to strong tightness, so that the problem that the saw blade fractures during turning because the saw blade is pulled too tightly on the saw log; moreover, the saw is convenient to use and has firm structure, so that the service life of the saw blade is effectively prolonged.

Description

A kind of saw

Technical field

The utility model relates to a kind of handwork saw that is used to the field of producing and repairing, and especially refers to a kind of plaster saw that is used to saw gypsum.

Background technology

Existing a kind of patent No. discloses a kind of structure for the Chinese utility model patent that the CN91225567.6 name is called " multi-functional hacksaw ", its structure includes the saw bow of handle and is installed in saw blade in its underpart, its handle is the hollow body that an end has internal thread, protrusion side, the preceding lower end of its saw bow is equipped with dogbolt, protrusion front and back end, posterior end is equipped with the external screw thread that matches with handle, and the aperture slots on the vertical center line of parallel bow body and the plane that coexists is all arranged in two protrusions.But reach the object in " dead band " in its sawing narrow slit, and can utilize the saw blade that fractures, it is simple in structure, installation is easy.But its shortcoming is the end face of bolt hinders saw blade in the top easily, causes the saw blade breakage; Also have, this saw can't use the narrower saw blade of width, because dogbolt is difficult to block saw blade; Therefore its structure awaits to improve.

Summary of the invention

Technical problem to be solved in the utility model is that the present situation at prior art provides a kind of and designs ingenious, sound construction, wide and narrow saw blade all can be suitable for and can regulate a kind of saw of saw blade tightness on saw frame.

The utility model solves the problems of the technologies described above and the technical scheme that adopts is: this saw, include saw frame and saw blade, the front end of described saw blade is detachable to be connected with the saw frame front end, and the tail end of saw blade is connected with retention mechanism on being arranged at the saw frame tail end, it is characterized in that: described retention mechanism includes active pull rod, axially be provided with the handle and the clamp nut of through hole, the tail end detached type of the front end of described active pull rod and saw blade links together, and the tail end of described active pull rod passes the through hole of saw frame tail end successively, the axially extending bore of handle is threaded and tightens together with described clamp nut.

As improvement, the axially extending bore of described handle may be selected to be square, and described active pull rod be positioned at handle axially extending bore part also with suitable square of axially extending bore, and described active pull rod tail end extends the part of the axially extending bore of handle is screw rod, and this screw rod and clamp nut are spirally connected and tighten together.

Improve, described handle can include internal layer and skin again, and described axially extending bore is positioned at the middle part of internal layer, and this internal layer is plastics or metal hard layer, and the outer soft layer of making by high-molecular organic material, this skin is wrapped on the lateral circle surface of internal layer.

Improve, described clamp nut can include internal layer and skin again, and this internal layer can be plastics or metal hard layer, and the outer soft layer of making by high-molecular organic material, this skin is wrapped on the outer peripheral face of internal layer; The nut bore of described clamp nut is positioned at the axial medium position of internal layer, and the bottom is the blind hole end, and the degree of depth of the nut bore length of stretching out from the axially extending bore of handle greater than screw rod.

Improve again, also can be provided with the jog that skids when being convenient to shake hands on the skin of described handle.

Improve again, be distributed with the strip groove that when turning clamp nut, can increase anti-skid factor on the skin of described clamp nut.

Improve, described saw frame can be designed to arc again, and the detachable structure that is connected with the saw frame front end of the front end of saw blade is, cross through hole and the saw frame front end horizontal pivot pin of saw blade by front end covers and interconnect; The structure that the tail end detached type of the front end of described active pull rod and saw blade links together can be designed to: cross through hole and the motion bar front end lateral shaft guide of saw blade by tail end worn and interconnected.

Compared with prior art, the utility model adopts retention mechanism to include active pull rod, axially be provided with the handle and the clamp nut of through hole, the tail end detached type of the front end of described active pull rod and saw blade links together, and the tail end of described active pull rod passes the through hole of saw frame tail end successively loosely, the axially extending bore of handle is threaded and tightens together with described clamp nut.The advantage of this design is: not only design ingeniously and specious, and can both be suitable for saw blade is wide and narrow, because the location division design is in the position, top and the bottom of saw frame; The more important thing is, this saw can be regulated saw blade and be fixed on tightness on the saw frame, and when narrower saw blade saw thing is needed to turn, can unscrew clamp nut, active pull rod extreme direction appropriateness before saw frame is moved, thereby saw blade is loosened, to avoid saw blade too tightly to rupture, and then clamp nut tightened, this moment, clamp nut contacted mutually with the tail end of handle, and the front end of handle contacts mutually with the saw frame bottom surface and tightens together mutually, and handle and saw frame and clamp nut all are in tightening state like this, but saw blade is in the state that can appropriate loosen, thereby has solved effectively when saw blade turns round because of the saw blade problem that La Detai tightly ruptures on saw frame; Not only easy to use, and sound construction, effectively prolonged the service life of saw blade; Handle of this saw and clamp nut are by inside and outside two-layer the composition in addition, and skin is a soft layer, and it is comfortable not only to shake hands, and hand can not feel too cold yet when using winter; Have, design has jog on the skin of handle, can increase degree of friction when shaking hands, so that can grasp the direction of saw blade better again.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the perspective view of Fig. 1 different angles;

Fig. 3 is the perspective view after Fig. 2 turns over turnback from top to bottom;

Fig. 4 is the enlarged drawing when handle and clamp nut are combined together among Fig. 1;

Fig. 5 is the axial cutaway view of Fig. 4;

Fig. 6 is the exploded view of Fig. 5;

Fig. 7 is the left view of Fig. 1;

Fig. 8 is the right view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

To shown in Figure 8, the saw of present embodiment includes saw frame 4 and saw blade 5 as Fig. 1, and the front end of described saw blade 5 is detachable to be connected with saw frame 4 front ends, and the tail end of saw blade 5 is connected with retention mechanism on being arranged at saw frame 4 tail ends.Retention mechanism includes active pull rod 3, axially is provided with the handle 2 and the clamp nut 1 of through hole, the tail end detached type of the front end of described active pull rod 3 and saw blade 5 links together, and the tail end of described active pull rod 3 passes the through hole of saw frame 4 tail ends successively loosely, the axially extending bore of handle 2 is threaded and tightens together with described clamp nut 1.The axially extending bore of above-mentioned handle 2 is square, and described active pull rod 3 be positioned at handle 2 axially extending bore part also with suitable square of axially extending bore, and the part that described active pull rod 3 tail ends extend the axially extending bore of handle 2 is a screw rod 31, and this screw rod 31 is spirally connected and tightens together with clamp nut 1.Above-mentioned saw frame 4 is arc, the detachable structure that is connected with saw frame 4 front ends of the front end of saw blade 5 is, cross through hole and the saw frame 4 front ends horizontal pivot pin (in figure do not draw, this be conventional art) of saw blade 5 by front end covers and interconnect, and the structure that the tail end detached type of the front end of active pull rod 3 and saw blade 5 links together is: cross through hole and the motion bar 3 front ends horizontal pivot pin (in figure do not draw, this be conventional art) of saw blade 5 by tail end covers and interconnects.

As shown in Figure 5 and Figure 6, brown handle 2 includes internal layer 22 and outer 23, described axially extending bore is positioned at the middle part of internal layer 22, this internal layer 22 is plastics or metal hard layer, and the soft layer that skin 23 is made by high-molecular organic material, this skin 23 is wrapped on the lateral circle surface of internal layer 22, and the skin 23 of handle is provided with the jog 21 that skids when being convenient to shake hands.Clamp nut 1 includes internal layer 12 and outer 13, this internal layer 12 is plastics or metal hard layer, and the soft layer that skin 13 is made by high-molecular organic material, this skin 13 is wrapped on the outer peripheral face of internal layer 12, the nut bore 14 of clamp nut 1 is positioned at the axial medium position of internal layer 12, the bottom is the blind hole end, and the length P that the depth H of nut bore 14 is stretched out from the axially extending bore of handle 2 greater than screw rod 31, and on the skin 13 of solid nut spiral shell, be distributed with the strip groove 11 that when turning clamp nut 1, can increase anti-skid factor.

Claims

1. saw, include saw frame (4) and saw blade (5), the front end of described saw blade (5) is detachable to be connected with saw frame (4) front end, and the tail end of saw blade (5) is connected with retention mechanism on being arranged at saw frame (4) tail end, it is characterized in that: described retention mechanism includes active pull rod (3), axially be provided with the handle (2) and the clamp nut (1) of through hole, the tail end detached type of the front end of described active pull rod (3) and saw blade (5) links together, and the tail end of described active pull rod (3) passes the through hole of saw frame (4) tail end successively, the axially extending bore of handle (2) is threaded and tightens together with described clamp nut (1).

2. saw according to claim 1, it is characterized in that: the axially extending bore of described handle (2) is square, and described active pull rod (3) be positioned at handle (2) axially extending bore part also with suitable square of axially extending bore, and described active pull rod (3) tail end to extend the part of the axially extending bore of handle (2) be screw rod (31), this screw rod (31) is spirally connected and tightens together with clamp nut (1).

3. saw according to claim 2, it is characterized in that: described handle (2) includes internal layer (22) and outer (23), described axially extending bore is positioned at the middle part of internal layer (22), this internal layer (22) is plastics or metal hard layer, and the soft layer that outer (23) are made by high-molecular organic material, this skin (23) is wrapped on the lateral circle surface of internal layer (22).

4. saw according to claim 3, it is characterized in that: described clamp nut (1) includes internal layer (12) and outer (13), this internal layer (12) is plastics or metal hard layer, and the soft layer that outer (13) are made by high-molecular organic material, this skin (13) is wrapped on the outer peripheral face of internal layer (12).

5. saw according to claim 4, it is characterized in that: the nut bore (14) of described clamp nut (1) is positioned at the axial medium position of internal layer (12), the bottom is the blind hole end, and the degree of depth (H) of nut bore (14) length (P) of stretching out from the axially extending bore of handle (2) greater than screw rod (31).

6. according to claim 3 or 4 or 5 described saws, it is characterized in that: the skin of described handle (23) is provided with the jog (21) that skids when being convenient to shake hands.

7. according to claim 4 or 5 described saws, it is characterized in that: being distributed with on the skin of described clamp nut (13) to increase the strip groove of anti-skid factor (11) when turning clamp nut (1).

8. according to the described saw of arbitrary claim in the claim 1 to 5, it is characterized in that: described saw frame (4) is for arc, the detachable structure that is connected with saw frame (4) front end of the front end of saw blade (5) is, cross through hole and saw frame (4) the front end horizontal pivot pin of saw blade (5) by front end covers and interconnect.

9. according to the described saw of arbitrary claim in the claim 1 to 5, it is characterized in that: described saw frame (4) is for arc, and the structure that the tail end detached type of the front end of described active pull rod (3) and saw blade (5) links together is: cross through hole and motion bar (3) the front end lateral shaft guide of saw blade (5) by tail end worn and interconnected.