CN2378143Y - Portable electric saw and its saw blade - Google Patents
Portable electric saw and its saw blade Download PDFInfo
- Publication number
- CN2378143Y CN2378143Y CN 99215747 CN99215747U CN2378143Y CN 2378143 Y CN2378143 Y CN 2378143Y CN 99215747 CN99215747 CN 99215747 CN 99215747 U CN99215747 U CN 99215747U CN 2378143 Y CN2378143 Y CN 2378143Y
- Authority
- CN
- China
- Prior art keywords
- saw
- saw blade
- portable electric
- guide rod
- lower guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a portable electric saw and saw blades thereof. Two groups of reciprocating mechanisms which make alternate movement are used, and each reciprocating mechanism manipulates one saw blade 12, wherein, the convex surface diameter of a crank cam 4 is greater than the distance between an upper guide rod 2 and a lower guide rod 6 of a holding saw blade so that the saw blades are not at the same height during reciprocating movement, the invalid friction of the saw blades is avoided, and the abrasion of the saw blades is reduced.
Description
The utility model relates to a kind of portable electric saw and saw blade thereof.
Existing portable electric saw makes rotatablely moving of motor make saw blade reciprocating and reach the purpose of cutting material through transmission speed reducer structure and reciprocator.But saw blade still rubs with material when returning cutting edge of a knife or a sword mutually, easily makes the saw blade wearing and tearing.
At above-mentioned deficiency, the purpose of this utility model is exactly that a kind of portable electric saw that can not make saw blade be subjected to invalid friction will be provided, and a kind of special-purpose saw blade is provided simultaneously.
The portable electric saw that the utility model provides, rotatablely moving of motor affects saw blade work through the transmission speed reducer structure then to reciprocator.The portable electric saw that the utility model provides, there are two secondary and theirs measure-alike in its reciprocator, parallel top guide bar 2 and lower guide rod 6 are arranged in wherein every secondary reciprocator, one end is connected by vertical crossover guide rail 3, and the other end all is placed on the parallel sliding track that is fixed on the frame by pulley 1,7; The end that lower guide rod and crossover guide rail join is equipped with the saw blade presser feet.Slide block 5 is arranged on the crossover guide rail; One crank cam 4 is installed on the output shaft of transmission speed reducer structure, the convex surface of crank cam is that an output shaft with the transmission speed reducer structure is the same radius curved surface in axle center, the above lower guide rod of convex surface length is the boundary, and the above lower guide rod of convex surface is a contact-making surface, and the diameter of convex surface is greater than the distance between the last lower guide rod; The crank axle 9 of crank cam connects with slide block, crank axle curved surface to separated time on.Between the two secondary reciprocators of portable electric that the utility model provides saw, two crank cams are installed on the output shaft of same transmission speed reducer structure, and two crank axles are that the center differs 180 ° with the output shaft of transmission speed reducer structure; Two groups of pairing slide rails 10 of top guide bar are on sustained height, and two groups of pairing slide rails 11 of lower guide rod are also on sustained height; Two saw blade presser feets all inwards, and position between the two keeps the saw blade 12 of clamping to paste mutually,
Because the diameter of convex surface can lift guide rod like this greater than the distance between the last lower guide rod when the convex surface of crank cam contacts with top guide bar, promptly lift saw blade; When contacting with lower guide rod, the convex surface of crank cam can force down guide rod, promptly force down saw blade, when two crank cams move simultaneously, another saw blade when lifting the saw blade another and forcing down saw blade a saw blade is contacted with material hangs, and the gap up and down of the difference of distance between the lower guide rod is arranged between two saw blades on the diameter that doubles convex surface; Same saw blade contacted with material when going out cutting edge of a knife or a sword and material is done effectively cutting, do not contact when returning cutting edge of a knife or a sword and avoid doing invalid friction with material with material.As previously mentioned, portable electric saw provided by the utility model goes out the cutting edge of a knife or a sword cutting and returns cutting edge of a knife or a sword to hang by what two strap saw row cultures replaced, has eliminated the invalid friction between saw blade and the material, simultaneously because two saw blade co-operation have improved cutting efficiency.
The utility model also provides the saw blade of the portable electric that a kind of utility model provided saw simultaneously, and the sawtooth of this saw blade is only chosen out to one side, and between the sawtooth of front and back the space is arranged.
This saw blade provided by the utility model is owing to sawtooth is only chosen out to one side, when two saw blade symmetries are arranged sawtooth is all outwards chosen out, saw blade is pasted mutually and mutual moving, remedy the deficiency that the existing saw blade of choosing out to the two sides can not be used for this occasion.
Fig. 1 is the front view of the secondary reciprocator of one of the utility model;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the front view of reciprocator in the utility model;
Fig. 4 is that the master of a kind of embodiment of the utility model cuts open figure;
Fig. 5 is the front view of the saw blade of the utility model.
Further describe some technical characterictics of portable electric saw provided by the utility model and saw blade thereof below with an embodiment.
Embodiment: shown in Fig. 1,2,3,4,5, the portable electric saw has installs various mechanism elements formations in the housing 24, and there is rifle bolt power switch 23 at the handle place, and power line 22 is introduced from handle.The convex surface diameter of crank cam 4 is bigger 4 millimeters than the distance between top guide bar 2 and the lower guide rod 6 in the reciprocator.Two top guide bars and two lower guide rods in the two secondary reciprocators are placed in the Type B slide rail set made from thin material 10,11 with pulley 1,7 separately.At the housing front end baffle plate 20 is arranged, with pushing down the material that is cut so that portable electric is sawed.The flexible mouth of saw blade has flanging inwards and settles between itself and saw blade and clamps ball 19 to compress two saw blades on the baffle plate, and unlikely they throw off.The top of the saw blade of the baffle plate back of the body is installed with screw 15 and is carried on the back frame pressing plate 14 and compress will carry on the back frame 13.Back of the body frame has two limits that can fold, and straight flange divaricates to clamp the two sides that ball 18 is pressed in two saw blades 12 respectively, and horizontal edge is pressed in the back of the body frame pressing plate 14.Back of the body frame clamps two saw blades except that the clamping ball that can be used on baffle plate, and its part that exceeds saw blade also can be used to the baffle plate holding workpiece.The straight flange of back of the body frame also can be turned up use.A straight rudder plate 17 also is installed on baffle plate, straight rudder plate is installed in outer, the saw blade back side of portable electric saw front end shell, straight rudder sheet and saw blade at grade and its thickness less than saw kerf width, the function of straight rudder plate is to saw when portable electric to enter line of cut when wanting cutting straight line swage set is walked directly, and it also can be packed up when cutting straight line not.Turn up for one of saw blade, turn up the back of punching on one side and be fastened on the saw blade presser feet with screw, two saw blades during a portable electric is sawed are the center symmetry with the face that is harmonious.
Claims (4)
1, a kind of portable electric saw has motor, transmission speed reducer structure, reciprocator, it is characterized in that there are two secondary and they measure-alike in said reciprocator, wherein
(1) every secondary reciprocator constitutes like this:
Parallel top guide bar [2] and lower guide rod [6] are 1. arranged, and an end is connected by vertical crossover guide rail [3], and the other end all passes through pulley [1,7] and is placed on the parallel sliding track that is fixed on the frame;
2. the end that joins of lower guide rod and crossover guide rail is equipped with the saw blade presser feet;
Slide block [5] is 3. arranged on the crossover guide rail;
One crank cam [4] 4. is installed on the output shaft of transmission speed reducer structure, the convex surface of crank cam is that an output shaft with the transmission speed reducer structure is the same radius curved surface in axle center, the above lower guide rod of convex surface length is the boundary, the above lower guide rod of convex surface is a contact-making surface, and the diameter of convex surface is greater than the distance between the last lower guide rod;
5. the crank axle of crank cam [9] connects with slide block, crank axle curved surface to separated time on;
Between (2) the two secondary reciprocators:
1. two crank cams are installed on the output shaft of same transmission speed reducer structure, and two crank axles are that the center differs 180 ° with the output shaft of transmission speed reducer structure
2. two groups of pairing slide rails of top guide bar [10] are on sustained height, and two groups of pairing slide rails of lower guide rod [11] are also on sustained height;
3. two saw blade presser feets all inwards, and position between the two keeps the saw blade [12] of clamping to paste mutually.
2, portable electric saw as claimed in claim 1 is characterized in that a supporting back frame [13] in addition, and back of the body frame has two limits that can fold, and straight flange divaricates to clamp the two sides that ball [18] is pressed in two saw blades [12] respectively, and horizontal edge is pressed in the back of the body frame pressing plate [14].
3, portable electric as claimed in claim 1 or 2 saw is characterized in that there is rudder sheet [17] always, saw blade [12] back side outer in portable electric saw front end shell, directly rudder sheet and saw blade at grade and its thickness less than saw kerf width.
4, the saw blade of portable electric saw as claimed in claim 1 is characterized in that the sawtooth of saw blade is only chosen out to one side, and between the sawtooth of front and back the space is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215747 CN2378143Y (en) | 1999-07-06 | 1999-07-06 | Portable electric saw and its saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99215747 CN2378143Y (en) | 1999-07-06 | 1999-07-06 | Portable electric saw and its saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378143Y true CN2378143Y (en) | 2000-05-17 |
Family
ID=34007592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99215747 Expired - Fee Related CN2378143Y (en) | 1999-07-06 | 1999-07-06 | Portable electric saw and its saw blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378143Y (en) |
-
1999
- 1999-07-06 CN CN 99215747 patent/CN2378143Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |