CN209930924U - Rebound type tooth back mowing saw blade - Google Patents
Rebound type tooth back mowing saw blade Download PDFInfo
- Publication number
- CN209930924U CN209930924U CN201920360040.5U CN201920360040U CN209930924U CN 209930924 U CN209930924 U CN 209930924U CN 201920360040 U CN201920360040 U CN 201920360040U CN 209930924 U CN209930924 U CN 209930924U
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- China
- Prior art keywords
- bounce
- saw bit
- bit body
- seted
- sawtooth
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- 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 discloses a bounce-back type back of tooth saw bit of mowing, including the saw bit body, the mounting hole has been seted up in the center department of saw bit body, the limit portion of saw bit body is equipped with the sawtooth, one side of sawtooth is equipped with the back of tooth, the opening has been seted up at the middle part of the back of tooth, open-ended one side is equipped with the bounce-back arch, the bellied top of bounce-back sets up to circular structure, the bellied top of bounce-back sets up to concentric circle structure with the top of sawtooth, the through-hole has been seted up on the saw bit body, the mounting groove has been seted. The utility model discloses a set up the opening on the back of the tooth of saw bit body, open-ended one side sets up the bounce-back arch, and the opening provides the bounce-back space for the bounce-back arch, under the high-speed rotatory condition of saw bit body, after the stone is touched in the bounce-back arch, is favorable to flicking the stone, protects the sawtooth not receive the impact damage of stone, prolongs the life of saw bit.
Description
Technical Field
The utility model relates to a lawn mower technical field specifically is a rebound type back of tooth saw bit of mowing.
Background
Lawn mowers (Lawn mowers) are also known as weed trimmers, lawnmowers, Lawn trimmers, and the like. The mower is a mechanical tool for trimming lawn and vegetation, and is composed of cutter head, engine, walking wheels, walking mechanism, blades, handrail and control unit. The cutter head is arranged on the travelling wheel, the engine is arranged on the cutter head, the blade is arranged on the output shaft of the engine, the blade is greatly improved in speed by utilizing the high-speed rotation of the engine, the operation time of weeding workers is saved, and a large amount of manpower resources are reduced.
The cutting saw blade is an indispensable part of the mower, when the mower is used for mowing in the field, the kettle can touch hard stones and other relatively hard obstacles in grass clusters, and if the welding strength is poor or the wall cloth of a cutter head material is poor, the cutter head can fall off, so that people or animals around the cutter head are injured. To this end, we propose a back-sprung tooth-back mowing saw blade.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims to solve the defects of the prior art, the utility model provides a rebound type tooth back of body saw bit of mowing, through set up the opening on the tooth back of body at the saw bit body, open-ended one side sets up the bounce-back arch, and the opening is the bounce-back arch and provides the bounce-back space, under the high-speed rotatory condition of saw bit body, after the protruding stone of touching of bounce-back, is favorable to popping out the stone to propose the problem that the stone damaged the sawtooth in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bounce-back type tooth back of body saw bit of mowing, includes the saw bit body, the mounting hole has been seted up in the center department of saw bit body, the limit portion of saw bit body is equipped with the sawtooth, one side of sawtooth is equipped with the tooth back of body, the opening has been seted up at the middle part of tooth back of body, open-ended one side is equipped with the bounce-back arch, the bellied top of bounce-back sets up to circular structure, the bellied top of bounce-back sets up to concentric circle structure with the top of sawtooth, the through-hole has been seted up on the saw bit body.
Preferably, both sides of the mounting groove are provided with limit grooves.
Preferably, the edge part of the through hole is provided with a slope, and a first cutting edge is installed on the slope.
Preferably, the through holes are provided with seven groups, and the aperture of each group of through holes is gradually increased from inside to outside.
Preferably, the through holes of each group are equal in distance, and the through holes of each group are arranged in a fan shape on the saw blade body.
Preferably, the inner side of the opening is provided with a second blade.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up the opening on the back of the tooth of saw bit body, open-ended one side sets up the bounce-back arch, and the opening provides the bounce-back space for the bounce-back arch, under the high-speed rotatory condition of saw bit body, after the stone is touched in the bounce-back arch, is favorable to flicking the stone, protects the sawtooth not receive the impact damage of stone, prolongs the life of saw bit.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the area A in FIG. 1;
fig. 3 is a schematic sectional structure of the present invention;
fig. 4 is an enlarged structural diagram of a region B in fig. 3.
In the figure: 1 saw bit body, 2 sawtooth, 3 tooth backs, 4 openings, 5 bounce-back archs, 6 through-holes, 7 mounting holes, 8 mounting grooves, 9 slopes, 10 first cutting edge, 11 spacing grooves, 12 second cutting edge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a rebound type tooth back mowing saw blade comprises a saw blade body 1, wherein a mounting hole 7 is arranged at the center of the saw blade body 1, the edge of the saw blade body 1 is provided with saw teeth 2, one side of the saw teeth 2 is provided with a tooth back 3, the middle part of the tooth back 3 is provided with an opening 4, one side of the opening 4 is provided with a rebound bulge 5, the top of the rebound bulge 5 is of a circular structure, the shape structure of the rebound protrusions 5 is beneficial to improving the rebound effect of the rebound protrusions 5, the top parts of the rebound protrusions 5 and the top parts of the saw teeth 2 are arranged to be concentric circles, so that the rebound protrusions 5 and the saw teeth 2 are kept on the same circle when the saw blade body 1 rotates, the saw teeth 2 are protected, the saw blade body 1 is provided with through holes 6, this through-hole 6 provides good heat dissipation for when the saw bit body 1 dispels the heat, mounting groove 8 has been seted up to one side of mounting hole 7. This mounting groove 8 matches with the installation axle of lawn mower, the installation of the saw bit body 1 of being convenient for.
Specifically, the two sides of the mounting groove 8 are both provided with limiting grooves 11. Install on the installation axle of lawn mower with spacing groove 11 assorted stopper, be favorable to the spacing installation to saw bit body 1, improve saw bit body 1's stability.
Specifically, a slope 9 is formed at the edge of the through hole 6, and a first blade 10 is installed on the slope 9. The first blade 10 is advantageous in cutting grass inserted into the through hole 6 and preventing the grass from being wound around the blade body 1.
Specifically, the through holes 6 are provided with seven groups, and the aperture of each group of through holes 6 is gradually increased from inside to outside. The aperture of the seven groups of through holes 6 is changed from small to big, which is convenient for the heat dissipation of the saw blade body 1.
Specifically, the distance between the through holes 6 in each group is equal, and the through holes 6 in each group are arranged in a fan shape and are arranged on the saw blade body 1. The space on the reasonable utilization saw bit body 1, simultaneously, when rotating on the saw bit body 1, the heat dissipation of saw bit body 1 of being convenient for.
Specifically, the inner side of the opening 4 is provided with a second blade 12. The second blade 12 is advantageous in cutting off the weeds caught inside the opening 4.
The working principle is as follows: during the use, install saw bit body 1 on the installation axle of lawn mower through mounting hole 7, under the high-speed rotatory circumstances of saw bit body 1, after bounce-back arch 5 touches the stone, be favorable to flicking the stone, protection sawtooth 2 does not receive the impact damage of stone, the life of extension saw bit, through-hole 6 on the saw bit body 1, in the pivoted of saw bit body 1, the heat dissipation of saw bit body 1 of being convenient for, first cutting edge 10 on slope 9 on the through-hole 6 edge can cut off the grass that inserts in through-hole 6, the inboard second cutting edge 12 of opening 4 will be drawn into the inboard weeds of opening 4 and cut off and avoid coiling on saw bit body 1.
As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a bounce-back type tooth back saw bit of mowing, includes saw bit body (1), mounting hole (7), its characterized in that have been seted up to the center department of saw bit body (1): the limit portion of saw bit body (1) is equipped with sawtooth (2), one side of sawtooth (2) is equipped with the tooth back of the body (3), opening (4) have been seted up at the middle part of tooth back of the body (3), one side of opening (4) is equipped with bounce-back arch (5), the top of bounce-back arch (5) sets up to circular structure, the top of bounce-back arch (5) sets up to concentric circle structure with the top of sawtooth (2), through-hole (6) have been seted up on saw bit body (1), mounting groove (8) have been seted up to one side of mounting hole (7).
2. The rebound type backtoothed mowing saw blade according to claim 1, wherein: limiting grooves (11) are formed in the two sides of the mounting groove (8).
3. The rebound type backtoothed mowing saw blade according to claim 1, wherein: slope (9) have been seted up to the edge portion of through-hole (6), install first cutting edge (10) on slope (9).
4. The rebound type backtoothed mowing saw blade according to claim 1, wherein: the through holes (6) are provided with seven groups, and the aperture of each group of through holes (6) is gradually increased from inside to outside.
5. The rebound type backtoothed mowing saw blade according to claim 4, wherein: the distance between each group of the through holes (6) is equal, and each group of the through holes (6) are arranged on the saw blade body (1) in a fan shape.
6. The rebound type backtoothed mowing saw blade according to claim 1, wherein: the inner side of the opening (4) is provided with a second blade (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920360040.5U CN209930924U (en) | 2019-03-21 | 2019-03-21 | Rebound type tooth back mowing saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920360040.5U CN209930924U (en) | 2019-03-21 | 2019-03-21 | Rebound type tooth back mowing saw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209930924U true CN209930924U (en) | 2020-01-14 |
Family
ID=69124961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920360040.5U Expired - Fee Related CN209930924U (en) | 2019-03-21 | 2019-03-21 | Rebound type tooth back mowing saw blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209930924U (en) |
-
2019
- 2019-03-21 CN CN201920360040.5U patent/CN209930924U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |