CN203197379U - Transmission mechanism of reciprocating saw - Google Patents
Transmission mechanism of reciprocating saw Download PDFInfo
- Publication number
- CN203197379U CN203197379U CN 201320101516 CN201320101516U CN203197379U CN 203197379 U CN203197379 U CN 203197379U CN 201320101516 CN201320101516 CN 201320101516 CN 201320101516 U CN201320101516 U CN 201320101516U CN 203197379 U CN203197379 U CN 203197379U
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- China
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- transmission mechanism
- reciprocating
- reduction box
- gear wheel
- drive block
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Abstract
The utility model relates to a transmission mechanism of a reciprocating saw. The transmission mechanism comprises a motor and a reciprocating rod, wherein a reduction box is installed at the upper portion of the motor, and the rear end of the reciprocating rod is connected with an output shaft of the motor through a transmission structure installed in the reduction box. The transmission mechanism is characterized by comprising a small gear, a large gear and a transmission block, the small gear is meshed with the large gear and is installed on the output shaft of the motor, the upper end face of the large gear is provided with an eccentric shaft which extends upwards, the rear end of the reciprocating rod is fixed on the transmission block which is limited in the reduction box and is capable sliding forward and backward, a slide groove is formed in the bottom of the transmission block in the horizontal direction, the eccentric shaft is located in the slide groove, and the eccentric shaft drives the transmission block to slide forward and backward due to rotation of the large gear. The small gear, the large gear and the transmission block serve as the main transmission parts of the transmission mechanism, and the parts included are few and simple in structure.
Description
Technical field
The utility model relates to a kind of electric hand-held tool, relates in particular to a kind of transmission mechanism of reciprocating saw.
Background technology
Electric reciprocating saw is a kind of instrument relatively more commonly used, is widely used in the industries such as automobile, propagation, wooden model, decoration, leather, by the straight reciprocating motion of saw blade workpiece is cut.The cutting object of reciprocating saw can be the mixing of timber, metal or these materials, because cutting object is wider, and also easy to carry, be suitable for the occasions such as house ornamentation.
Reciprocating saw commonly used all is single saw blade, with rotatablely moving by various transmission mechanism of motor, such as eccentric wheel, fork etc., is converted into the reciprocating motion of reciprocating lever.Be the Chinese utility model patent " reciprocating saw driving device " of ZL02261287.4 (notification number is CN2582802Y) such as the patent No., and the patent No. is the Chinese utility model patent " a kind of Portable type reciprocating saw " of ZL200620102408.0 (notification number is CN2877933Y), they have all disclosed a kind of like this transmission mechanism of reciprocating saw, comprise gearbox body, sliding bearing and special-shaped sliding bearing, be horizontally disposed with reciprocating lever, one end of reciprocating lever stretches out gearbox body, be provided with the output shaft parallel with reciprocating lever in the gearbox body, one end of output shaft is fixed with the driven gear with the engagement of motor gear axle, the other end arranges Oscillating lever bearing, fork one end is connected with Oscillating lever bearing, and the other end is connected with reciprocating lever.Output shaft is converted to the fork axially-movable by Oscillating lever bearing and fork with circular motion, and reciprocating lever moves back and forth under the drive of fork, and in one week of output shaft rotation, fork promotes reciprocating lever and makes a round trip.
It is more that the transmission mechanism of aforementioned reciprocating saw relates to parts, and reciprocating lever need to link to each other with power output shaft with Oscillating lever bearing by fork, and annexation is complicated, and assembly precision is had relatively high expectations, and needed assembly space is large in addition, is unfavorable for the miniaturization of product.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of simple in structure, transmission mechanism of relating to the reciprocating saw that parts are few, cost is low is provided for above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of transmission mechanism of reciprocating saw, comprise motor and reciprocating lever, the front end of reciprocating lever is equipped with saw blade, the top of motor is equipped with reduction box, the front end that reciprocating lever is located in reduction box can move forward and backward, the rear end of reciprocating lever is connected with the output shaft of motor by the drive mechanism that is installed in the reduction box, it is characterized in that: described transmission mechanism comprises pinion, gear wheel and drive block, described pinion and gear wheel are intermeshing, pinion is installed on the output shaft of motor, the upper surface of described gear wheel is provided with upwardly extending eccentric shaft, the rear end of described reciprocating lever is fixed on the drive block, described drive block constrains in the reduction box and slippage before and after the energy, the bottom of drive block has the chute that arranges along left and right directions, described eccentric shaft is positioned at this chute, and the rotation of gear wheel makes eccentric shaft drive drive block front and back slippage.
As improvement, be fixed with guide pad in the above-mentioned reduction box, the left and right sides of guide pad has the sidewall that arranges to downward-extension, have the gathering sill that runs through setting along fore-and-aft direction on the sidewall, the left and right sides on described drive block top has outward extending insert edge, and described insert edge is plugged in the gathering sill and slippage before and after the energy.Insert edge on the drive block cooperates with gathering sill on the guide pad, slides for the front and back of drive block and plays the guiding constraint effect, prevents that drive block from moving partially, guarantees that saw blade only moves forward and backward, the reciprocating saw stable working.
Be arranged with relatively the first axle sleeve of eccentric shaft rotation on the above-mentioned eccentric shaft, the front and back inwall of described chute and the first axle sleeve periphery are fitted.Because the axle center eccentric setting of the relative gear wheel of eccentric shaft, gear wheel is in rotary course, can be along the chute move left and right, we are sheathed the first axle sleeve on eccentric shaft, can make the sliding friction between eccentric shaft and the chute inwall become rolling friction, eccentric shaft can more easily drive drive block and move forward and backward, and wearing and tearing are few.
Be arranged with shock-absorbing sleeve on the above-mentioned reciprocating lever, this shock-absorbing sleeve constrains in the front portion in the reduction box.Because it is larger that saw blade meets obstructions in the course of the work, easily vertical tremor arranges shock-absorbing sleeve and can absorb the reciprocating lever vibration energy, reduces the up-down vibration amplitude of reciprocating lever.
The rear end of above-mentioned reciprocating lever and the front end face of described drive block weld together.It is the most firm to weld, and certainly also can adopt alternate manner to connect.
For ease of installing, be fixed with support in the above-mentioned reduction box, have the first installing hole and the second installing hole on the support, the axial region of described pinion is installed in the first installing hole, and the axial region activity of described gear wheel is plugged in the second installing hole.We can be installed to gear wheel and pinion on the support first in advance like this, and then global facility is installed in the reduction box together, assemble more convenient.
The axial region of above-mentioned pinion is installed in the first installing hole by the second axle sleeve.Can make like this pinion rotation more smooth and easy.
Be arranged with pad on the axial region of above-mentioned gear wheel, this pad is between the lower surface of support and gear wheel.Pad is set can make the gear wheel rotation more smooth and easy.
Compared with prior art, the utility model has the advantage of: the main drive disk assembly of this transmission mechanism is pinion, gear wheel and drive block, relate to parts few, and each modular construction is simple, drive the gear wheel rotation by pinion, the rotation of gear wheel makes eccentric shaft drive drive block and moves forward and backward, and finally drives the reciprocating lever front and back and moves back and forth.
Description of drawings
Fig. 1 is the perspective view of the utility model embodiment;
Fig. 2 is the perspective view after the utility model embodiment removes half reduction box;
Fig. 3 is the perspective view after the utility model embodiment removes reduction box and guide pad;
Fig. 4 is the cutaway view of the utility model embodiment;
Fig. 5 is that the A-A of Fig. 4 is to cutaway view.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1～5, be a preferred embodiment of the present utility model.
A kind of transmission mechanism of reciprocating saw comprises motor 1 and reciprocating lever 2, and the front end of reciprocating lever 2 is equipped with saw blade 4, and the top of motor 1 is equipped with reduction box 3, and reduction box 3 is combined by a left side half housing and right half housing and is fixed by screws in together.The front end that reciprocating lever 2 is located in reduction box 3 can move forward and backward, and is arranged with shock-absorbing sleeve 21 on the reciprocating lever 2, and this shock-absorbing sleeve 21 constrains in the front portion in the reduction box 3, and the rear end of reciprocating lever 2 is connected with the output shaft 11 of motor by the drive mechanism that is installed in the reduction box 3.
Transmission mechanism comprises pinion 5, gear wheel 6 and drive block 7, pinion 5 and gear wheel 6 are intermeshing, pinion 5 and gear wheel 6 form a train of reduction gears, pinion 5 is installed on the output shaft 11 of motor, the upper surface of gear wheel 6 is provided with upwardly extending eccentric shaft 61, the rear end of reciprocating lever 2 is weldingly fixed on the front end face of drive block 7, drive block 7 constrains in the reduction box 3 and slippage before and after the energy, the bottom of drive block 7 has the chute 71 that arranges along left and right directions, eccentric shaft 61 is positioned at this chute 71, be arranged with relatively the first axle sleeve 62 of eccentric shaft 61 rotations on the eccentric shaft 61, the front and back inwall of chute 71 and the first axle sleeve 62 peripheries are fitted, and the rotation of gear wheel 6 makes eccentric shaft 61 drive drive block 7 front and back slippages.
Be fixed with guide pad 8 in the reduction box 3, the left and right sides of guide pad 8 has the sidewall 81 that arranges to downward-extension, have the gathering sill 82 that runs through setting along fore-and-aft direction on the sidewall 81, the left and right sides on drive block 7 tops has outward extending insert edge 72, and insert edge 72 is plugged in the gathering sill 82 and slippage before and after the energy.
Be fixed with support 9 in the reduction box 3, have the first installing hole 91 and the second installing hole 92 on the support 9, the axial region of pinion 5 is installed in the first installing hole 91 by the second axle sleeve 51, the axial region activity of gear wheel 6 is plugged in the second installing hole 92, be arranged with pad 10 on the axial region of gear wheel 6, this pad 10 is between the lower surface of support 9 and gear wheel 6.
Motor 1 drives pinion 5 rotations, and pinion 5 drives gear wheel 6 rotations, and the rotation of gear wheel 6 makes eccentric shaft 61 drive drive block 7 and moves forward and backward, and finally drives reciprocating lever 2 front and back and moves back and forth.
Claims (8)
1. the transmission mechanism of a reciprocating saw, comprise motor (1) and reciprocating lever (2), the front end of reciprocating lever (2) is equipped with saw blade (4), the top of motor (1) is equipped with reduction box (3), the front end that reciprocating lever (2) is located in reduction box (3) can move forward and backward, the rear end of reciprocating lever (2) is connected with the output shaft (11) of motor by the drive mechanism that is installed in the reduction box (3), it is characterized in that: described transmission mechanism comprises pinion (5), gear wheel (6) and drive block (7), described pinion (5) and gear wheel (6) are intermeshing, pinion (5) is installed on the output shaft (11) of motor, the upper surface of described gear wheel (6) is provided with upwardly extending eccentric shaft (61), the rear end of described reciprocating lever (2) is fixed on the drive block (7), described drive block (7) constrains in the reduction box (3) and slippage before and after the energy, the bottom of drive block (7) has the chute (71) that arranges along left and right directions, described eccentric shaft (61) is positioned at this chute (71), and the rotation of gear wheel (6) makes eccentric shaft (61) drive drive block (7) front and back slippage.
2. the transmission mechanism of reciprocating saw according to claim 1, it is characterized in that: be fixed with guide pad (8) in the described reduction box (3), the left and right sides of guide pad (8) has the sidewall (81) that arranges to downward-extension, have the gathering sill (82) that runs through setting along fore-and-aft direction on the sidewall (81), the left and right sides on described drive block (7) top has outward extending insert edge (72), and described insert edge (72) is plugged in the gathering sill (82) and slippage before and after the energy.
3. the transmission mechanism of reciprocating saw according to claim 2, it is characterized in that: be arranged with relatively first axle sleeve (62) of eccentric shaft (61) rotation on the described eccentric shaft (61), the front and back inwall of described chute (71) and the first axle sleeve (62) periphery are fitted.
4. the transmission mechanism of reciprocating saw according to claim 1 is characterized in that: be arranged with shock-absorbing sleeve (21) on the described reciprocating lever (2), this shock-absorbing sleeve (21) constrains in the front portion in the reduction box (3).
5. the transmission mechanism of reciprocating saw according to claim 1, it is characterized in that: the front end face of the rear end of described reciprocating lever (2) and described drive block (7) welds together.
6. the transmission mechanism of arbitrary described reciprocating saw according to claim 1～5, it is characterized in that: be fixed with support (9) in the described reduction box (3), have the first installing hole (91) and the second installing hole (92) on the support (9), the axial region of described pinion (5) is installed in the first installing hole (91), and the axial region activity of described gear wheel (6) is plugged in the second installing hole (92).
7. the transmission mechanism of reciprocating saw according to claim 6, it is characterized in that: the axial region of described pinion (5) is installed in the first installing hole (91) by the second axle sleeve (51).
8. the transmission mechanism of reciprocating saw according to claim 6, it is characterized in that: be arranged with pad (10) on the axial region of described gear wheel (6), this pad (10) is positioned between the lower surface of support (9) and gear wheel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101516 CN203197379U (en) | 2013-03-06 | 2013-03-06 | Transmission mechanism of reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101516 CN203197379U (en) | 2013-03-06 | 2013-03-06 | Transmission mechanism of reciprocating saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203197379U true CN203197379U (en) | 2013-09-18 |
Family
ID=49141519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320101516 Expired - Fee Related CN203197379U (en) | 2013-03-06 | 2013-03-06 | Transmission mechanism of reciprocating saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203197379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015858A (en) * | 2017-12-07 | 2018-05-11 | 科尔芯动（北京）科技有限公司 | The lightweight reciprocating saw that a kind of branches of tall trees are cut out |
-
2013
- 2013-03-06 CN CN 201320101516 patent/CN203197379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015858A (en) * | 2017-12-07 | 2018-05-11 | 科尔芯动（北京）科技有限公司 | The lightweight reciprocating saw that a kind of branches of tall trees are cut out |
| CN108015858B (en) * | 2017-12-07 | 2020-07-10 | 科尔芯动（北京）科技有限公司 | Portable reciprocating saw for pruning high branches |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20160306 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |