CN112963281B

CN112963281B - Gasoline saw is with starting buffer gear

Info

Publication number: CN112963281B
Application number: CN202110124616.XA
Authority: CN
Inventors: 周帅
Original assignee: Jinhua Meian Electromechanical Co ltd
Current assignee: Jinhua Meian Electromechanical Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-09-09
Anticipated expiration: 2041-01-29
Also published as: CN112963281A

Abstract

The invention discloses a starting buffer mechanism for a gasoline saw, which relates to the technical field of chain saws and comprises a mounting plate, wherein one side of the mounting plate is fixedly connected with a starting part, the top of one side of the starting part is fixedly connected with a conduit, the top end of the conduit is internally and fixedly connected with a mounting groove, the inside of the mounting groove is fixedly connected with a bearing, the inside of the bearing is movably connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a mounting frame, one side of the mounting frame is fixedly connected with a fixed shaft, the outer side of the fixed shaft is sleeved with a rolling ball, the inside of the conduit is provided with a pull rope, and one end of the pull rope is provided with a handle. According to the invention, through the matching arrangement of the buffer tube and the telescopic rod, a certain buffer space can be provided for a user when resistance is large and even recoil is formed in the process of pulling the pull rope, so that the risk of arm injury of the user is reduced, and the safety is higher.

Description

Gasoline saw is with starting buffer gear

Technical Field

The invention relates to the technical field of chain saws, in particular to a starting buffer mechanism for a gasoline saw.

Background

The gasoline saw is a portable power tool mainly used for taking materials in forest felling, garden trimming, furniture industry and decoration industry, mainly comprises a small two-stroke gasoline engine, a starting device, a chain wheel, a chain and a guide plate, wherein the small two-stroke gasoline engine is used as power and driven by the chain wheel, and the guide plate runs through a special cutting and sawing chain to achieve the purposes of cutting, pruning and trimming the topics such as wood, branches, ice blocks and the like. The guide plate is mainly used for pruning in landscaping, and can be used for large-scale wood carving, large-outline modification of ice carving and the like when being replaced. When the existing gasoline saw is started, an operator pulls a starting handle by hand, the starting handle drives a starting rope pulley to rotate through a starting pull rope, and the starting rope pulley drives a gasoline engine crankshaft to rotate, so that the purpose of starting and igniting the gasoline engine is achieved. The existing gasoline saw has the following defects in the starting process: when the operator pulls the start stay cord fast and starts petrol engine, engine start inertial resistance is big, this resistance forms recoil effort direct action operator's arm, do not conform human engineering's requirement, can injure the arm even, simultaneously because when starting the petrol saw, owing to need carry out quick pull to the stay cord, at this in-process, the stay cord can carry out violent friction with the petrol saw, when long-time the use, can lead to the fact serious wearing and tearing to the stay cord, even when twitching the stay cord, lead to the fact the fracture of stay cord, not only can influence the normal use of device, can cause certain threat to operating personnel's safety even.

Therefore, there is a need to provide a start-up damping mechanism for a gasoline saw to solve the above problems.

Disclosure of Invention

Technical problem to be solved

The invention aims to: the invention provides a starting buffer mechanism for a gasoline saw, aiming at solving the problems that the starting inertia resistance of an engine is large in the starting process of the gasoline saw, the resistance forms recoil acting force which is directly applied to the arm of an operator, a pull rope can be severely rubbed with the gasoline saw, the pull rope can be seriously abraded in the long-time use process, and even the pull rope is broken when being pulled.

(II) technical scheme

The invention specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a petrol saw is with starting buffer gear, includes the mounting panel, one side fixedly connected with start-up portion of mounting panel, one side top fixedly connected with conduit of start-up portion, the mounting groove has been seted up to the inside fixed connection in conduit top, the inside fixedly connected with bearing of mounting groove, the inside swing joint of bearing has the pivot, the one end fixedly connected with mounting bracket of pivot, one side fixedly connected with fixed axle of mounting bracket, the roll ball has been cup jointed in the outside of fixed axle, the inside of conduit is equipped with the stay cord, the one end of stay cord is equipped with the handle.

Further, the one end fixedly connected with mounting disc of stay cord, one side fixedly connected with buffer tube of handle, the inner wall top fixedly connected with shock pad of buffer tube.

Further, the inner wall bottom fixedly connected with compression spring of buffer tube, compression spring's top fixedly connected with limiting plate.

Further, the diameter of the limiting plate is equal to the diameter of the buffer tube, and the length of the compression spring is equal to the distance between the bottom of the limiting plate and the bottom of the inner wall of the buffer tube.

Furthermore, the center of the bottom of the limiting plate is fixedly connected with a telescopic rod, and the bottom end of the telescopic rod is fixedly connected with a connecting frame.

Furthermore, the axes of the limiting plates of the axes of the telescopic rods are on the same straight line, and the telescopic rods are made of rigid materials.

Furthermore, one side of the buffer tube is fixedly connected with a fixing frame, and the bottom of the inner wall of the fixing frame is fixedly connected with an extension spring.

Further, the top end of the extension spring is fixedly connected with an installation block, and one side of the installation block is fixedly connected with a binding band.

Furthermore, one side of the binding band is fixedly connected with a gasket, and one side of the gasket is fixedly connected with an anti-slip stripe.

(III) advantageous effects

The invention has the following beneficial effects:

1. according to the invention, the plurality of rolling ball structures are arranged at one end of the conduit, so that the pull rope can be tightly attached to the rolling balls to move when being pulled in the using process of the device, the friction with the device is avoided, the loss degree of the pull rope is reduced, and the service life is prolonged.

2. According to the invention, through the matching arrangement of the buffer tube and the telescopic rod, a certain buffer space can be provided for a user when resistance is large and even recoil is formed in the process of pulling the pull rope, so that the risk of arm injury of the user is reduced, and the safety is higher.

3. According to the invention, the binding belt structure is arranged in the fixing frame, so that when the gasoline saw is started, the stretching spring can be used for tensioning the binding belt and the palm of a user, and the handle is prevented from sliding off in a severe pulling process.

4. According to the invention, through the matching arrangement of the mounting disc and the connecting frame, when the pull rope is pulled, the connecting frame and the mounting disc can rotate relatively, so that the pull rope does not need to rotate, and the influence on normal shrinkage caused by the bending and knotting of the pull rope is avoided.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a schematic side sectional view of a conduit structure according to the present invention;

FIG. 3 is a schematic side sectional view of the structure of the fixing frame of the present invention;

FIG. 4 is a schematic side sectional view of a buffer tube structure according to the present invention.

Reference numerals: 1. mounting a plate; 2. a starting part; 3. a handle; 5. a conduit; 6. a rolling ball; 7. a bearing; 8. mounting grooves; 9. a fixed shaft; 10. a mounting frame; 11. a rotating shaft; 12. pulling a rope; 13. a gasket; 14. mounting blocks; 15. an extension spring; 16. a fixed mount; 17. binding bands; 18. anti-skid stripes; 19. a limiting plate; 20. a compression spring; 21. a telescopic rod; 22. mounting a disc; 23. a shock pad; 24. a connecting frame; 25. a buffer tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1

Please refer to fig. 1 and 2, a gasoline saw is with starting buffer gear, including mounting panel 1, one side fixedly connected with start portion 2 of mounting panel 1, one side top fixedly connected with conduit 5 of start portion 2, the inside fixed connection in conduit 5 top has seted up mounting groove 8, the inside fixedly connected with bearing 7 of mounting groove 8, the inside swing joint of bearing 7 has pivot 11, the one end fixedly connected with mounting bracket 10 of pivot 11, one side fixedly connected with fixed axle 9 of mounting bracket 10, ball 6 has been cup jointed in the outside of fixed axle 9, the inside of conduit 5 is equipped with stay cord 12, the one end of stay cord 12 is equipped with handle 3.

In the embodiment, by arranging a plurality of rolling balls 6 at one end of the wire guide 5, in the using process of the device, when the gasoline saw is started, the pull rope 12 is usually not perpendicular to the wire guide 5 and is often pulled in all directions, four rolling balls 6 are arranged around the inner wall of the bearing 7, the gap between the four rolling balls 6 is smaller than the diameter of the pull rope 12, the rolling balls 6 are prevented from being clamped between the rolling balls 6 in the pulling process of the pull rope 12 and are tightly attached to the rolling balls 6 at one side in the pulling process of the pull rope 12, the rolling balls 6 rotate around the fixed shaft 9 when the pull rope 12 moves, in the pulling process, if the pulling direction is changed, the bearing 7 can drive the rolling balls 6 to integrally rotate, when the pull rope 12 is elongated, the slope generally changes, and when the inclination angle of the pull rope 12 changes, the fixed frame 16 drives the fixed shaft 9 to rotate under the action of the rotating shaft 11, make the in-process that stay cord 12 was twitched, can make rolling ball 6 hug closely and roll with stay cord 12 all the time, the top inboard of wire conduit 5 is glossy inclined plane simultaneously, and after stay cord 12 contacted with it, the reduction of friction also can the at utmost, can hug closely rolling ball 6 and move when pulling stay cord 12, avoids rubbing with the device, has reduced the loss degree of stay cord 12, increase of service life.

Example 2

Referring to fig. 1, 3 and 4, the present embodiment is further optimized based on embodiment 1, specifically, one end of the pulling rope 12 is fixedly connected with the mounting plate 22, one side of the handle 3 is fixedly connected with the buffer tube 25, and the top of the inner wall of the buffer tube 25 is fixedly connected with the shock pad 23.

Specifically, the bottom of the inner wall of the buffer tube 25 is fixedly connected with a compression spring 20, and the top end of the compression spring 20 is fixedly connected with a limiting plate 19.

Specifically, the diameter of limiting plate 19 is equal to the diameter of buffer tube 25, and the length of compression spring 20 is equal to the distance between the bottom of limiting plate 19 and the bottom of the inner wall of buffer tube 25.

Specifically, the center of the bottom of the limiting plate 19 is fixedly connected with a telescopic rod 21, and the bottom end of the telescopic rod 21 is fixedly connected with a connecting frame 24.

Specifically, the axes of the limiting plates 19 of the axes of the telescopic rods 21 are aligned, and the telescopic rods 21 are made of rigid materials.

Specifically, one side of the buffer tube 25 is fixedly connected with a fixing frame 16, and the bottom of the inner wall of the fixing frame 16 is fixedly connected with an extension spring 15.

Specifically, the top end of the extension spring 15 is fixedly connected with a mounting block 14, and one side of the mounting block 14 is fixedly connected with a binding band 17.

Specifically, one side of the binding band 17 is fixedly connected with a gasket 13, and one side of the gasket 13 is fixedly connected with an anti-slip stripe 18.

In this embodiment, through the matching arrangement of the buffer tube 25 and the telescopic rod 21, when the pull rope 12 is pulled out from the device, the buffer tube 25 is pulled to one side through the handle 3, the pull rope 12 is pulled, in the pulling process of the pull rope 12, the compression spring 20 is squeezed but is not completely compressed, when the pull rope 12 suddenly catches the owner or the resistance of the device is large, the pull rope 12 can be stopped suddenly, a large recoil force can be formed at this time, due to inertia, the arm of the operator can continue to keep the stretching action, the pull rope 12 can continue to pull the telescopic rod 21 to move, the limiting plate 19 can continue to move in the buffer tube 25, the compression spring 20 continues to be compressed to one end of the buffer tube 25, a certain buffering effect is achieved, the influence on the arm is reduced, meanwhile, the rigid material is not easy to deform, the abrasion resistance is achieved, the diameter of the limiting plate 19 is the same as that of the buffer tube 25, the axes are in a straight line, in the process of compressing the compression spring 20, the limiting plate 19 can be enabled to cling to the inner wall of the buffer tube 25 to move, meanwhile, the axis of the telescopic rod 21 is located at the center of the compression spring 20, in the process of buffering, as the limiting plate 19 clings to the inner wall of the buffer tube 25, the phenomenon of blocking cannot occur in the moving process, the buffer tube is smoother, as the axis of the telescopic rod 21 is located at the center of the compression spring 20, the compression spring 20 can be stressed more uniformly, the local pressure is prevented from deforming too much, the shock pad 23 at the top of the inner wall of the buffer tube 25 is made of rubber and has certain elasticity, when a handle is loosened, the compression spring 20 can be suddenly released to push the limiting plate 19 to move upwards rapidly, the shock pad 23 can avoid collision, the damage caused by long-term use is avoided, in the process of pulling the pull rope 12, the arm of the user may rotate to a certain degree, the connecting frame 24 and the mounting plate 22 may rotate relatively, so that the pull rope 12 does not rotate, the pull rope 12 is prevented from being bent and knotted to affect normal contraction, meanwhile, when in use, the binding band 17 is pulled out from the fixing frame 16 and sleeved on the hand, the tension spring 15 tensions the binding band 17 and the palm of the user, so as to prevent the handle 3 from slipping off in a severe pulling process, the gasket 13 is made of soft rubber material, so as to prevent the hand of the user from being reined, the anti-slip stripes 18 are slightly raised rubber strips, so as to play an anti-slip role, so as to prevent the binding band 17 from slipping off from the used hand when in use, after the use is finished, the arm is pulled out from the binding band 17, the tension spring 15 withdraws the binding band 17 to the inner end of the fixing frame 16, so as to be convenient for storage, in the process of pulling the pull rope 12, when the resistance is large and even the recoil is formed, can provide certain buffering space to the user, reduce the injured risk of user's arm, more safety.

In summary, the following steps: according to the invention, when the pull rope 12 is pulled, the pull rope can tightly cling to the rolling ball 6 to move, so that friction with the device is avoided, the loss degree of the pull rope 12 is reduced, the service life is prolonged, a certain buffer space can be provided for a user when the resistance is large and even recoil is formed, the risk of arm injury of the user is reduced, and the safety is higher.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, and the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a petrol saw is with starting buffer gear, includes mounting panel (1), its characterized in that: a starting part (2) is fixedly connected to one side of the mounting plate (1), a conduit (5) is fixedly connected to the top of one side of the starting part (2), a mounting groove (8) is fixedly connected to the inside of the top end of the conduit (5), a bearing (7) is fixedly connected to the inside of the mounting groove (8), four rolling balls (6) are arranged on the periphery of the inner wall of the bearing (7), and gaps among the four rolling balls (6) are smaller than the diameter of the pull rope (12); a rotating shaft (11) is movably connected inside the bearing (7), one end of the rotating shaft (11) is fixedly connected with an installation frame (10), one side of the installation frame (10) is fixedly connected with a fixed shaft (9), the rolling ball (6) is sleeved outside the fixed shaft (9), a pull rope (12) is arranged inside the conduit (5), one end of the pull rope (12) is provided with a handle (3), and the inner side of the top end of the conduit (5) is a smooth inclined plane; when the pull rope (12) is pulled, the pull rope (12) is tightly attached to the rolling ball (6) on one side, and the rolling ball (6) rotates around the fixed shaft (9) when the pull rope (12) moves; when the inclination angle of the pull rope (12) changes, the fixed frame (16) drives the fixed shaft (9) to rotate under the action of the rotating shaft (11), so that the rolling ball (6) is always tightly attached to the pull rope (12) and rolls in the pulling process of the pull rope (12), and the pull rope (12) is in contact with the inclined plane on the inner side of the top end of the conduit (5).

2. The starting buffering mechanism for the gasoline saw as claimed in claim 1, wherein: the one end fixedly connected with mounting disc (22) of stay cord (12), one side fixedly connected with buffer tube (25) of handle (3), the inner wall top fixedly connected with shock pad (23) of buffer tube (25).

3. The starting buffering mechanism for the gasoline saw as claimed in claim 2, wherein: the inner wall bottom fixedly connected with compression spring (20) of buffer tube (25), the top fixedly connected with limiting plate (19) of compression spring (20).

4. The starting buffer mechanism for the gasoline saw as defined in claim 3, wherein: the diameter of the limiting plate (19) is equal to that of the buffer tube (25), and the length of the compression spring (20) is equal to the distance between the bottom of the limiting plate (19) and the bottom of the inner wall of the buffer tube (25).

5. The starting buffer mechanism for the gasoline saw as defined in claim 3, wherein: the bottom center of the limiting plate (19) is fixedly connected with a telescopic rod (21), and the bottom end of the telescopic rod (21) is fixedly connected with a connecting frame (24).

6. The starting buffering mechanism for the gasoline saw as claimed in claim 5, wherein: the axes of the limiting plates (19) of the axes of the telescopic rods (21) are on the same straight line, and the telescopic rods (21) are made of rigid materials.

7. The starting buffer mechanism for the gasoline saw as defined in claim 2, wherein: one side fixedly connected with mount (16) of buffer tube (25), the inner wall bottom fixedly connected with extension spring (15) of mount (16).

8. The starting buffering mechanism for the gasoline saw as defined in claim 7, wherein: the top end of the extension spring (15) is fixedly connected with an installation block (14), and one side of the installation block (14) is fixedly connected with a binding band (17).

9. The starting buffering mechanism for the gasoline saw as defined in claim 8, wherein: one side of the binding band (17) is fixedly connected with a gasket (13), and one side of the gasket (13) is fixedly connected with an anti-slip stripe (18).