CN216607473U - Chain saw with saw chain tensioning texture - Google Patents
Chain saw with saw chain tensioning texture Download PDFInfo
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- CN216607473U CN216607473U CN202123144844.8U CN202123144844U CN216607473U CN 216607473 U CN216607473 U CN 216607473U CN 202123144844 U CN202123144844 U CN 202123144844U CN 216607473 U CN216607473 U CN 216607473U
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Abstract
The utility model discloses a chain saw with a saw chain tensioning structure, which comprises a guide plate, a saw chain, a knob and a cover plate, wherein the saw chain is matched with the guide plate, a stud is arranged on the knob and penetrates through the cover plate to fix the guide plate, the chain saw further comprises a cam and a push block, the push block is fixed on the guide plate, a convex block is arranged at the front end of the push block, the cam coaxially rotates along with the knob, and the cam is abutted against the convex block when rotating to force the guide plate to move forwards to tighten the saw chain. According to the saw chain tensioning device, the knob is matched with the push block to screw and fix the guide plate and drive the cam to rotate, the protruding block arranged on the push block plays a role of matching the guide plate to tension the saw chain when the cam rotates, so that a user can synchronously complete the adjustment of the saw chain tensioning while rotating the knob to press the guide plate through the mutual matching of the cam and the protruding block, and the effects of simplifying the complexity of the structure, saving the production cost and reducing the adjustment difficulty are achieved.
Description
Technical Field
The utility model relates to the field of gardening tools, in particular to a chain saw with a saw chain tensioning structure.
Background
The saw chain tensioning structure of most chain saws on the existing market and the pressing structure of the guide plate adopt a split structure, when the saw chain needs to be replaced, the saw chain is adjusted through the saw chain tensioning structure, then the pressing structure of the guide plate presses the guide plate, and the steps are complex. The chain saw with a single-knob structure can realize the adjustment of the saw chain and the pressing of the guide plate, but the chain saw is complex in structure, complex in production and assembly, high in manufacturing cost and high in product control difficulty, so that improvement is needed.
Disclosure of Invention
The utility model provides a novel chain saw with a saw chain tensioning structure, aiming at the defects of complex structure, complex assembly, high manufacturing cost, high product control difficulty and the like of the chain saw with a single-knob structure in the prior art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the chain saw with the saw chain tensioning structure comprises a guide plate, a saw chain, a knob and a cover plate, wherein the saw chain is matched with the guide plate, a stud is arranged on the knob and penetrates through the cover plate to be fixed on the guide plate, the chain saw further comprises a cam and a push block, the push block is fixed on the guide plate, a convex block is arranged at the front end of the push block, the cam rotates along with the knob in a coaxial mode, and the cam pushes the convex block to force the guide plate to move forwards to tighten the saw chain when rotating.
According to the saw chain tensioning device, the knob is matched with the push block to screw and fix the guide plate and drive the cam to rotate, the protruding block arranged on the push block plays a role of matching the guide plate to tension the saw chain when the cam rotates, so that a user can synchronously complete the adjustment of the saw chain tensioning while rotating the knob to press the guide plate through the mutual matching of the cam and the protruding block, and the effects of simplifying the complexity of the structure, saving the production cost and reducing the adjustment difficulty are achieved.
Preferably, the chain saw with the saw chain tensioning structure further comprises a clamp spring, one end of the knob penetrates through the cover plate and then is connected with the clamp spring, one side of the cover plate abuts against the knob, and the other side of the cover plate abuts against the clamp spring.
According to the utility model, the clamp spring is arranged, so that the knob can rotate on the cover plate without influencing the normal rotation of the knob, the integrity of the saw chain is improved, and the operation of replacing the saw chain can be reduced, so that convenience is provided for users.
Preferably, the chain saw with the saw chain tensioning structure further comprises a shaft sleeve and a ratchet wheel, wherein the shaft sleeve comprises a flat square part, a rotating part and a convex part from top to bottom, the shaft sleeve sequentially penetrates through the cam and the ratchet wheel from bottom to top, the flat square part is matched with the ratchet wheel, the rotating part is matched with the cam, the convex part is abutted to the lower end of the cam, and the stud penetrates through the shaft sleeve and is in interference fit with the shaft sleeve.
The flat square part arranged on the shaft sleeve is matched with the ratchet wheel to drive the ratchet wheel to rotate, the rotating part is matched with the cam to avoid the mutual interference with the cam when the shaft sleeve rotates, and the convex part is abutted against the lower surface of the cam to limit the cam so as to improve the adaptability of the shaft sleeve and the cam; the stud and the shaft sleeve are in interference fit, so that the shaft sleeve can rotate along with the stud, the ratchet wheel is driven to enable the cam to rotate, the effect of controlling the tightness of the saw chain is finally achieved, the push block is abutted to the lower end of the shaft sleeve in the knob screwing process, and the stud is in motion to transmit and compress the push block when external acting force breaks through friction force of interference fit of the shaft sleeve.
Preferably, the chain saw with the saw chain tensioning structure further comprises a spring, the spring is sleeved on the stud, and the spring presses the upper surface of the ratchet wheel.
The spring is arranged to act on the upper surface of the ratchet wheel to press the ratchet wheel to improve the fitting degree of the ratchet wheel and the cam, meanwhile, external force required when the ratchet wheel is separated from the cam is increased, the reaction force of a saw chain on the guide plate is increased in a phase-changing manner, and the saw chain adjusting mechanism further ensures that the saw chain adjusting mechanism has a better saw chain adjusting function.
Preferably, in the chain saw with the saw chain tensioning structure, a first ratchet is arranged on an upper surface of the cam, a second ratchet is arranged on a lower surface of the ratchet wheel, and the first ratchet is matched with the second ratchet.
The first ratchet on the cam is matched with the second ratchet on the ratchet wheel, and the cam is supported by the meshing of the first ratchet and the second ratchet.
Preferably, in the chain saw with the saw chain tensioning structure, the guide plate and the push block are connected through screws.
Adopt the screw to connect the advantage that baffle and ejector pad have the dismantlement formula and be connected, can provide convenient for the user when the accessory is changed.
Drawings
FIG. 1 is an exploded view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The utility model will be described in further detail with reference to the following figures 1-2 and the detailed description, which are not intended to limit the utility model:
example 1
The utility model provides a chain saw with saw chain tensioning texture, includes baffle 8, saw chain 9, knob 1, apron 2, saw chain 9 with baffle 8 mutual adaptation, be equipped with double-screw bolt 11 on the knob 1, double-screw bolt 11 passes apron 2 is fixed baffle 8 still includes cam 5, ejector pad 7 is fixed on the baffle 8, the front end of ejector pad 7 is equipped with lug 71, cam 5 along with knob 1 coaxial rotation, when cam 5 rotates with lug 71 is inconsistent to force baffle 8 forward motion is tightened the saw chain 9.
Preferably, the improved structure further comprises a clamp spring 12, one end of the knob 1 penetrates through the cover plate 2 and then is connected with the clamp spring 12, one side of the cover plate 2 abuts against the knob 1, and the other side of the cover plate 2 abuts against the clamp spring 12.
As preferred, still include axle sleeve 6, ratchet 4, axle sleeve 6 includes flat square portion 61, rotation portion 62, convex part 63 from top to bottom, axle sleeve 6 passes from supreme down in proper order cam 5, ratchet 4, flat square portion 61 with ratchet 4 cooperation, rotation portion 62 with cam 5 cooperation, convex part 63 with the cam 5 lower extreme is inconsistent, double-screw bolt 11 passes axle sleeve 6 and with 6 interference fit of axle sleeve.
Preferably, the ratchet mechanism further comprises a spring 3, the spring 3 is sleeved on the stud 11, and the spring 3 presses the upper surface of the ratchet 4.
Preferably, the cam 5 is provided with a first ratchet 51 on the upper surface, the ratchet 4 is provided with a second ratchet 41 on the lower surface, and the first ratchet 51 is matched with the second ratchet 41.
Preferably, the guide plate 8 and the push block 7 are connected through screws.
The steps of assembly and adjustment in the operation of replacing a new saw chain using a chain saw with the present invention include: firstly, a saw chain 9 is taken, the saw chain 9 is arranged on a guide plate 8, and a pushing block 7 is fixed on the guide plate 8 through a screw; then taking the cover plate 2 and the knob 1, penetrating the knob 1 through the cover plate 2, and clamping the clamp spring 12 on the knob 1 to connect the cover plate 2 with the knob 1; and finally, taking the spring 3, the ratchet wheel 4, the cam 5 and the shaft sleeve 6, sequentially penetrating the spring 3, the ratchet wheel 4, the cam 5 and the shaft sleeve 6 through the stud 11 and connecting the two, and rotating the knob 1 to finish the assembling step.
After the knob 1 is rotated, the knob 1 drives the shaft sleeve 6 to rotate, the flat square part 61 drives the ratchet wheel 4 to rotate, the ratchet wheel 4 drives the cam 5 to rotate, and the cam 5 collides with the convex block 71 in the rotating process to push the push block 7 and drive the guide plate 8 to move towards the direction of tightening the saw chain 9; when the tension generated after the saw chain 9 is tightened acts on the first ratchet 51 and the second ratchet 41 in a reaction manner, the ratchet 4 moves upwards, the first ratchet 51 is separated from the second ratchet 41, the cam 5 does not rotate when the knob 1 is rotated continuously, the knob 1 is screwed, the shaft sleeve 6 is pressed on the push block 7, the push block 7 does not slide, and the adjusting step is completed.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.
Claims (6)
1. A chain saw with a saw chain tensioning structure comprises a guide plate (8), a saw chain (9), a knob (1) and a cover plate (2), wherein the saw chain (9) and the guide plate (8) are mutually matched, a stud (11) is arranged on the knob (1), the stud (11) penetrates through the cover plate (2) to fix the guide plate (8), and the chain saw is characterized in that: the saw chain mechanism is characterized by further comprising a cam (5) and a push block (7), wherein the push block (7) is fixed on the guide plate (8), a convex block (71) is arranged at the front end of the push block (7), the cam (5) rotates along with the knob (1) coaxially, and when the cam (5) rotates, the cam (5) is abutted to the convex block (71) to force the guide plate (8) to move forwards to tighten the saw chain (9).
2. A chain saw having a saw chain tensioning structure according to claim 1, wherein: still include jump ring (12), the one end of knob (1) is passed behind apron (2) with jump ring (12) are connected, one side of apron (2) with knob (1) are inconsistent, the opposite side of apron (2) with jump ring (12) are inconsistent.
3. A chain saw having a saw chain tensioning structure according to claim 1, wherein: still include axle sleeve (6), ratchet (4), axle sleeve (6) from top to bottom include flat side portion (61), rotation portion (62), convex part (63), supreme passing in proper order is followed down in axle sleeve (6) cam (5), ratchet (4), flat side portion (61) with ratchet (4) cooperation, rotation portion (62) with cam (5) cooperation, convex part (63) with cam (5) lower extreme is inconsistent, double-screw bolt (11) are passed axle sleeve (6) and with axle sleeve (6) interference fit.
4. A chain saw having a saw chain tensioning structure according to claim 3, wherein: still include spring (3), spring (3) cover is established on double-screw bolt (11), spring (3) oppress ratchet (4) upper surface.
5. The chain saw with the saw chain tensioning structure as recited in claim 4, wherein: the upper surface of the cam (5) is provided with a first ratchet (51), the lower surface of the ratchet wheel (4) is provided with a second ratchet (41), and the first ratchet (51) is matched with the second ratchet (41).
6. A chain saw having a saw chain tensioning structure according to claim 1, wherein: the guide plate (8) is connected with the push block (7) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123144844.8U CN216607473U (en) | 2021-12-14 | 2021-12-14 | Chain saw with saw chain tensioning texture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123144844.8U CN216607473U (en) | 2021-12-14 | 2021-12-14 | Chain saw with saw chain tensioning texture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216607473U true CN216607473U (en) | 2022-05-27 |
Family
ID=81703233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123144844.8U Active CN216607473U (en) | 2021-12-14 | 2021-12-14 | Chain saw with saw chain tensioning texture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216607473U (en) |
-
2021
- 2021-12-14 CN CN202123144844.8U patent/CN216607473U/en active Active
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