CN102974891B - The hacksaw in adjustable sawing space - Google Patents

The hacksaw in adjustable sawing space Download PDF

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Publication number
CN102974891B
CN102974891B CN201110268277.9A CN201110268277A CN102974891B CN 102974891 B CN102974891 B CN 102974891B CN 201110268277 A CN201110268277 A CN 201110268277A CN 102974891 B CN102974891 B CN 102974891B
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Prior art keywords
saw
saw bow
bow
hacksaw
hole
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Expired - Fee Related
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CN201110268277.9A
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Chinese (zh)
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CN102974891A (en
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李跃明
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李跃明
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Priority to CN201110268277.9A priority Critical patent/CN102974891B/en
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Abstract

The invention discloses a kind of can the hacksaw of spacing of quick adjustment saw bow and saw blade.Existing hacksaw great majority all can not regulate the spacing of saw bow and saw blade, also small part is had to be the spacing that can regulate saw bow and saw blade, but regulate cumbersome, need whole hacksaw to take apart, and can only regulate between specific two positions.Hacksaw of the present invention comprises saw blade, saw bow, saw blade tightening device, handle, mounting head, wherein saw bow is divided into front saw bow and rear saw bow, rear saw bow to be arranged on handle and can be rotationally connected and to locate, and can change between the two positions between front saw bow and rear saw bow.Such design makes to regulate the distance between saw bow and saw blade to become very efficient and convenient, hacksaw need not be taken apart and just can regulate, and can regulate between multiple position, expand the scope of application of hacksaw.

Description

The hacksaw in adjustable sawing space
Technical field
The present invention relates to a kind of cutting tool, is a kind of hacksaw of adjustable sawing space specifically.
Background technology
Existing hacksaw, a kind of is that cutting room cannot adjust, distance namely between saw bow and saw blade is changeless, as Chinese utility model patent ZL03225125.4 " hacksaw of rapid-assembling/disassembling saw blade " and Chinese utility model patent ZL200620088201.2 " multifunctional assembled hacksaw ".This kind of hacksaw is after installing saw blade, distance between saw blade and saw bow immobilizes, and this hacksaw of decision can cut the workpiece of much (or how thick) and can carry out cutting work in great working space by the distance between saw blade and saw bow.
Another kind is that cutting room is adjustable, and the distance namely between saw bow and saw blade is adjustable, as Chinese utility model patent ZL01203517.3 " Steel saw frame " and Chinese utility model patent ZL200820086922.9 " direction-changeable saw saw ".
The first hacksaw can only carry out cutting operation in a kind of fixing space, cannot adjust the distance of saw blade and saw bow; Although the second hacksaw can regulate the distance between saw bow and saw blade, there is following problem:
1, when carrying out distance adjustment, saw bow first disassembles from handle and mounting head by needs, change a direction and reload handle and mounting head again, regulate cumbersome, can not regulate quickly and easily, and the parts disassembled also easily are lost.
The position adjustment that 2, can only preset at two, can not adjust the distance between saw bow and saw blade according to actual needs.Namely can not the adjustment distance therebetween of many gears.
Summary of the invention
The technical assignment of technical problem to be solved by this invention and proposition is exactly that the one provided to overcome above-mentioned defect can regulate as required at multiple cutting room, and the convenient and swift hacksaw carrying out regulating, to adapt to different work requirements.
The present invention is by the following technical solutions for this reason:
The hacksaw in adjustable sawing space, comprise the saw blade with installing hole, handle, saw blade tensioning device, mounting head and saw bow, described saw bow is made up of front saw bow and rear saw bow, and described rear saw bow is rotationally connected and is positioned on handle, described front saw bow one end is connected with mounting head, and the other end is fixedly connected with the second place in primary importance with rear saw bow; When described front saw bow and rear saw bow are in primary importance, between saw bow and saw blade, there is ultimate range, between saw bow and saw blade, there is minimum range when the second place.
The said primary importance of the present invention refers to the position between saw bow and saw blade with ultimate range, and the second place refers to the position between saw bow and saw blade with minimum range.
As improving further and supplementing technique scheme, the present invention also comprises following additional technical feature:
As preferred technical scheme, described handle is provided with saw blade tensioning device, saw blade tensioning device is provided with mount pin.
As preferred technical scheme, described handle is provided with and rear saw bow can be rotationally connected and can be positioned on the rotation positioning device on handle.
As preferred technical scheme, described rear saw bow two ends are respectively arranged with profile of tooth through hole and the first through hole, the second through hole, and wherein, described profile of tooth through hole and the rotation positioning device of handle match, the rotational positioning of saw bow after realizing.
As preferred technical scheme, described rotation positioning device is the coaxial scallop arranged on handle, and profile of tooth counterbore, step surface and through hole, and keeper, handle and rear saw bow are rotationally connected and are positioned together by described keeper.
As preferred technical scheme, described front saw bow one end is connected with described mounting head, and the other end is provided with third through-hole, fourth hole, fifth hole.
As preferred technical scheme, described front saw bow and rear saw bow can be positioned at primary importance and the second place by separable positioner.
As preferred technical scheme, described separable positioner is " U " shape keeper, and be provided with fixed cover in the end sleeve of " U " shape keeper, this fixed cover is made up of flexible material.
As preferred technical scheme, described handle is provided with mounting groove, described rear saw bow is arranged in mounting groove, be respectively arranged with first in described mounting groove and be decided to be face and the second locating surface, described rear saw bow is rotated and is positioned by keeper between the first locating surface and the second locating surface.
As preferred technical scheme, described keeper is provided with toothed shank, along the stud that toothed shank extends back, positioning step, and and the nut that matches of stud.
The invention has the beneficial effects as follows:
1, the hacksaw in this adjustable sawing space can regulate in use quickly and easily between ultimate range and minimum range, and can regulate between multiple distance according to the needs of real work,
2, whole hacksaw dismounting need not be come when regulating, avoiding the loss of parts when regulating between multiple position.
Accompanying drawing explanation
Fig. 1 is the structural representation that the saw bow of the hacksaw in adjustable sawing space of the present invention and saw blade are in the state of ultimate range.
Fig. 2 is the structural representation that the saw bow of the hacksaw in adjustable sawing space of the present invention and saw blade are in the state of minimum range
Fig. 3 is the rear saw bow structural representation of the hacksaw in adjustable sawing space of the present invention.
Fig. 4 is that the C-C of Fig. 3 is to sectional structure schematic diagram.
Fig. 5 is that the A-A of Fig. 1 is to broken section structural representation.
Fig. 6 is the front saw bow structural representation of the hacksaw in the present invention's adjustable sawing space.
Fig. 7 is that the D-D of Fig. 6 is to sectional structure schematic diagram.
Fig. 8 is that the B-B of Fig. 1 is to broken section structural representation.
Fig. 9 is the structural representation of fixed cover of the present invention.
Figure 10 is that the E-E of Fig. 9 is to sectional structure schematic diagram.
Figure 11 is the structural representation of " U " of the present invention shape keeper.
Figure 12 is the top view of Figure 11.
Figure 13 is locating element structure schematic diagram of the present invention.
Number in the figure illustrates:
1-handle, 11-scallop, 12-profile of tooth counterbore, 13-step surface, 14-through hole, 15-rear wall,
16-antetheca, 17-first locating surface, 18-second locating surface, 19-mounting groove,
2-saw blade, 21/22-installing hole,
3-saw blade tensioning device,
4-mounting head, 31/41-alignment pin,
5-saw bow, saw bow after 51-, saw bow before 52-, 53-profile of tooth through hole, 54-first through hole, 55-second through hole, 56-third through-hole, 57-fourth hole, 58-fifth hole,
6-keeper, 61-toothed shank, 62-stud, 63-positioning step, 64-nut,
7-" U " shape keeper, 71/72-alignment pin, 73-fixed cover, 74/75-fixing hole,
Detailed description of the invention
Below in conjunction with Figure of description, by specific embodiment, the present invention will be further described.
As shown in Figure 1 and Figure 2, this hacksaw comprises handle 1, is with the saw blade 2 of installing hole 21/22, saw blade tensioning device 3 (being provided with mount pin 31), mounting head 4 (being provided with mount pin 41) and saw bow 5 to form, wherein:
Saw bow 5 is made up of front saw bow 52 and rear saw bow 51.One end of rear saw bow 51 is connected with handle 1, is provided with profile of tooth through hole 53, and the other end is connected with front saw bow 52, is provided with the first through hole 54 and the second through hole 55.Front saw bow 52 one end is connected with mounting head (also can be made of one with mounting head), and the other end is provided with third through-hole 56, fourth hole 57, fifth hole 58.
" U " shape keeper 7, it is respectively arranged with alignment pin 71/72, fixed cover 73, is provided with the fixing hole 74/75 matched with alignment pin.In order to prevent fixed cover 74/75 from coming off from alignment pin 71/72, fixed cover 74/75 can be made (such as rubber, modified PVC etc.) with soft plastic.
Front saw bow, rear saw bow, alignment pin, fixed cover can mode as shown in Figure 5 fit together.
Handle 1 is provided with saw blade tensioning device 3, how it specifically tightens up saw blade has had a lot of patent to be described, and (ZL200820086922.9 " direction-changeable saw saw " as in this patent background technology), is not described in detail in this.
Handle 1 is also provided with mounting groove 19 (see accompanying drawing 8), the rear wall 15 and antetheca 16 of mounting groove 19 are coaxially arranged with scallop 11, profile of tooth counterbore 12 and through hole 14 respectively, and step surface 13 forms.The first locating surface 17 and the second locating surface 18 is also respectively arranged with in mounting groove 19, these two locating surfaces 17/18 define the rotational angle of rear saw bow in mounting groove 19, and person easy to use finds the position of ultimate range and minimum range between saw bow and saw blade fast when regulating.When rear saw bow is resisted against the first locating surface 17 by regulating the angle between front saw bow and rear saw bow, can make, between saw bow and saw blade, there is ultimate range; When rear saw bow is resisted against the second locating surface 18 by regulating the angle between front saw bow and rear saw bow, can make, between saw bow and saw blade, there is minimum range.When the diverse location of rear saw bow between the first locating surface 17 and the second locating surface 18 rotates and locate, can adjust between saw bow and saw blade and there is different distance, thus best service range can be adjusted according to the needs of real work.
Keeper 6, on it, one end is provided with the toothed shank 61 matched with scallop 11 and the first profile of tooth counterbore 12, and the other end is stud 62, forms positioning step 63 between toothed shank 61 and stud 62.
Rear saw bow, handle and keeper mode is as shown in Figure 8 assembled together.
During use, first rear saw bow can be inserted the mounting groove of handle, make rear saw bow abut to the first locating surface 17, keeper is penetrated, make step surface 13 and positioning step 63 mutually against, nut 64 of then screwing on the stud 62 of keeper.Again front saw bow and the docking of rear saw bow are got up, the first through hole 54 and fifth hole 58 are alignd, the second through hole 55 and third through-hole 57 is alignd simultaneously, penetrate " U " shape keeper and be inserted in fixed cover.Again mounting head is assembled on front saw bow, finally loads onto saw blade and by saw blade tensioning device, saw blade strained.The hacksaw assembled so as shown in Figure 1, has maximum cutting distance between saw bow and saw blade.
When needing to adjust the distance between saw bow 5 and saw blade 2, can first unscrew saw blade tensioning device saw blade is pulled down, unscrew again 64 and press keeper 6 until rear saw bow 51 can rotate in the mounting groove 19 of handle make after saw bow abut to the second locating surface 18, rear saw bow is reliably positioned on handle by fastening nut 64 again.Pulled down by " U " shape keeper afterwards, after adjustment, the angle of saw bow and front saw bow, makes the first through hole 54 and fifth hole 58 align, the second through hole 55 and fourth hole 56 is alignd simultaneously, again penetrate " U " shape keeper 7 and be inserted in fixed cover 73 again.Finally load onto saw blade and by saw blade tensioning device, saw blade strained.The hacksaw assembled so as shown in Figure 2, has minimum cutting distance between saw bow and saw blade.
In like manner by the angle after adjustment between saw bow and handle, can make that there is between saw bow and saw blade different cutting distances, meet and be not both user demand.
The adjustment of the spacing of saw bow and saw blade is just achieved very fast and easily by several steps above.
Above-mentioned specific embodiment is most preferred embodiment of the present invention, and any non-simple transformation through creative work, should think the scope of the claim falling into this invention.

Claims (7)

1. the hacksaw in an adjustable sawing space, comprise with installing hole (21, 22) saw blade (2), handle (1), saw blade tensioning device (3), mounting head (4) and saw bow (5), it is characterized in that described saw bow (5) is made up of front saw bow (52) and rear saw bow (51), wherein, described rear saw bow (51) is rotationally connected and is positioned on handle, described front saw bow (52) one end is connected with mounting head, the other end is fixedly connected with between two positions with rear saw bow (51), between saw bow (5) and saw blade (2), there is ultimate range when primary importance, between saw bow (5) and saw blade (2), there is minimum range when the second place, described handle (1) is provided with saw blade tensioning device (3), saw blade tensioning device (3) is provided with mount pin (31), described handle (1) is provided with and rear saw bow (51) can be rotationally connected and can be positioned on the rotation positioning device on handle, described rear saw bow (51) one end is provided with profile of tooth through hole (53) and the first through hole (54), the other end is provided with the second through hole (55), wherein, described profile of tooth through hole (53) and the rotation positioning device of handle (1) match, the rotational positioning of saw bow (51) after realizing.
2. the hacksaw in adjustable sawing space according to claim 1, it is characterized in that described rotation positioning device is upper coaxial scallop (11), profile of tooth counterbore (12), step surface (13) and the through hole (14) arranged of handle (1), and keeper (6), handle (1) and rear saw bow (51) are rotationally connected and are positioned together by described keeper (6).
3. the hacksaw in adjustable sawing space according to claim 1, it is characterized in that described front saw bow (52) one end is connected with described mounting head (4), the other end is provided with third through-hole (56), fourth hole (57), fifth hole (58).
4. the hacksaw in the adjustable sawing space according to claim 1 or 2 or 3, is characterized in that described front saw bow (52) and rear saw bow (51) are positioned at primary importance or the second place by separable positioner.
5. the hacksaw in adjustable sawing space according to claim 4, it is characterized in that described separable positioner is for " U " shape keeper (7), is provided with fixed cover (73) in the end sleeve of " U " shape keeper (7).
6. the hacksaw in adjustable sawing space according to claim 1, it is characterized in that described handle (1) is provided with mounting groove (19), described rear saw bow (51) is arranged in mounting groove (19), is respectively arranged with the first locating surface (17) and the second locating surface (18) in described mounting groove (19).
7. the hacksaw in adjustable sawing space according to claim 2, the nut (64) that the stud (62), positioning step (63) and the stud (62) that it is characterized in that described keeper (6) is provided with toothed shank (61), extend back along toothed shank (61) match.
CN201110268277.9A 2011-09-05 2011-09-05 The hacksaw in adjustable sawing space Expired - Fee Related CN102974891B (en)

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CN102974891B true CN102974891B (en) 2016-03-23

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106577169A (en) * 2015-10-15 2017-04-26 江苏爱福特科技开发有限公司 Handsaw

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556093A (en) * 1946-07-16 1951-06-05 Jerry M Leatherman Adjustable hacksaw frame
CN201192743Y (en) * 2008-05-06 2009-02-11 杭州巨星科技股份有限公司 Direction-changeable saw
CN201405125Y (en) * 2009-09-18 2010-02-17 王南乔 Fixed-type saw bow rack with crank, slide block, and connecting rod
CN201702451U (en) * 2010-05-14 2011-01-12 陈小俊 Elastic force fastening type manual steel saw
CN202356727U (en) * 2011-09-05 2012-08-01 李跃明 Steel saw capable of adjusting saw cutting space

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900003992Y1 (en) * 1986-09-05 1990-05-07 박균덕 Saw tensinging device can also adjust the height of the saw blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556093A (en) * 1946-07-16 1951-06-05 Jerry M Leatherman Adjustable hacksaw frame
CN201192743Y (en) * 2008-05-06 2009-02-11 杭州巨星科技股份有限公司 Direction-changeable saw
CN201405125Y (en) * 2009-09-18 2010-02-17 王南乔 Fixed-type saw bow rack with crank, slide block, and connecting rod
CN201702451U (en) * 2010-05-14 2011-01-12 陈小俊 Elastic force fastening type manual steel saw
CN202356727U (en) * 2011-09-05 2012-08-01 李跃明 Steel saw capable of adjusting saw cutting space

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