CN217136138U

CN217136138U - Reciprocating saw for cutting grass

Info

Publication number: CN217136138U
Application number: CN202220449663.1U
Authority: CN
Inventors: 柳勇; 韩潭华; 彭国华
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-09
Anticipated expiration: 2032-03-03

Abstract

The application discloses a grass cutting reciprocating saw, which comprises a shell, a driving mechanism, a reciprocating rod and a damping component, wherein the driving mechanism is arranged on the shell; the driving mechanism, the reciprocating rod and the damping component are all arranged in the shell, one end of the reciprocating rod is connected with the driving mechanism, the other end of the reciprocating rod is fixedly provided with the grass cutting saw, and the reciprocating rod is suitable for driving the grass cutting saw to reciprocate under the driving of the driving mechanism; the shock absorption component is suitable for being in flexible contact fit with the reciprocating rod, so that the shock absorption component can radially support the reciprocating rod in the moving process of the reciprocating rod. The beneficial effect of this application: through the flexible contact of shock-absorbing component, can effectual reduction reciprocating lever vibrations and the noise that produces at the removal in-process, and then improve user's experience quality.

Description

Reciprocating saw for cutting grass

Technical Field

The application relates to the technical field of lawnmowers, in particular to a reciprocating saw for mowing grass.

Background

The grass cutting reciprocating saw is applied to a grass mower, and can be driven by a motor to drive a saw blade to perform high-degree reciprocating movement through a driving mechanism so as to repair branches. The existing driving mechanism used by the grass cutting reciprocating saw is basically a crank-slider mechanism, so that in the process of driving the saw blade to move in a reciprocating manner, the reciprocating rod for driving the saw blade can generate large vibration, the vibration can reduce the service life of the grass cutting reciprocating saw, large noise can be brought, and the experience quality of a user is influenced. Therefore, the grass cutting reciprocating saw with the functions of shock absorption and noise reduction is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a reciprocating saw cuts grass, can be convenient and quick detect the axiality of mating holes on the chassis.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a grass cutting reciprocating saw comprises a shell, a driving mechanism, a reciprocating rod and a damping component; the driving mechanism, the reciprocating rod and the damping component are all arranged in the shell, one end of the reciprocating rod is connected with the driving mechanism, the other end of the reciprocating rod is fixedly provided with a grass cutting saw, and the reciprocating rod is suitable for driving the grass cutting saw to reciprocate under the driving of the driving mechanism; the damping component is suitable for being matched with the reciprocating rod in a flexible contact mode, so that the damping component can radially support the reciprocating rod in the moving process of the reciprocating rod, vibration and noise generated in the moving process of the reciprocating rod can be effectively reduced through the flexible contact of the damping component, and the experience quality of a user is improved.

Preferably, the damping part comprises a pair of damping rollers, and the damping rollers are symmetrically arranged on two sides of the reciprocating rod and are respectively in flexible contact with the reciprocating rod.

Preferably, an inward-concave matching groove is formed in the middle of the outer side of the damping roller, so that the damping roller is in flexible contact with the side wall of the reciprocating rod through the matching groove; through the cooperation groove with the adaptation of reciprocating lever lateral wall, can effectual improvement the damping roller with the area of contact of reciprocating lever to improve the shock attenuation effect and fall the quality of making an uproar.

Preferably, the middle part of the damping roller is provided with a mounting hole, mounting shafts are fixedly arranged on the two sides of the reciprocating rod of the shell, and the damping roller is rotatably connected with the mounting shafts through the mounting hole, so that when the reciprocating rod moves, the damping roller is driven to rotate around the mounting shafts through the contact and matching of the reciprocating rod and the damping roller; through the shock attenuation roller is in the rotation of reciprocating lever removal in-process can effectual reduction the wearing and tearing of shock attenuation roller to improve the life of shock attenuation roller.

Preferably, a wear-resistant sleeve is mounted on the side wall of the mounting hole, and the damping roller is suitable for being in running fit with the mounting shaft through the wear-resistant sleeve; through wear-resisting cover can effectual reduction the shock attenuation roller with the installation axle frictional force that produces when rotating, and then help the rotation of shock attenuation roller.

Preferably, the side wall of the mounting hole is provided with a wear-resistant sleeve, and the wear-resistant sleeve and the mounting shaft are suitable for being mounted in a matched mode through a plurality of rolling needles; the friction force of the circumferential rotation of the damping roller can be further reduced through the rolling needles, so that the service life of the damping roller is further prolonged.

Preferably, the damping roller is made of rubber.

Compared with the prior art, the beneficial effect of this application lies in:

compared with the traditional grass cutting reciprocating saw, the damping component is installed in the shell, and the damping component is matched with the reciprocating rod in a flexible contact mode, so that reciprocating motion can be carried out on the reciprocating rod in the process, radial flexible support can be carried out on the reciprocating rod through the damping component, radial vibration generated in the moving process of the reciprocating rod can be effectively reduced, meanwhile, noise generated in the moving process of the reciprocating rod can also be reduced, and the experience quality of a user is improved.

Drawings

Fig. 1 is a schematic view of the overall internal structure of the present invention;

FIG. 2 is a schematic structural view of a damping roller according to the present invention;

FIG. 3 is a cross-sectional view of the damping roller of the present invention;

FIG. 4 is a schematic view of the assembly of the damping roller and the mounting shaft of the present invention;

in the figure: the grass cutting device comprises a shell 1, a mounting shaft 11, a driving mechanism 2, a reciprocating rod 3, a grass cutting saw 4, a damping component 5, a damping roller 51, a matching groove 510, a mounting hole 511, a wear-resisting sleeve 52 and a roller pin 53.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In one preferred embodiment of the present application, as shown in fig. 1 to 4, a grass cutting reciprocating saw includes a housing 1, a driving mechanism 2, a reciprocating lever 3, and a shock absorbing member 5. The driving mechanism 2, the reciprocating rod 3 and the damping component 5 are all arranged in the shell 1, one end of the reciprocating rod 3 is connected with the driving mechanism 2, the other end of the reciprocating rod 3 is fixedly provided with the grass cutting saw 4, and the reciprocating rod 3 is suitable for driving the grass cutting saw 4 to reciprocate under the driving of the driving mechanism 2; damping part 5 is suitable for and carries out the flexonics cooperation with reciprocating lever 3 to make damping part 5 can radially support reciprocating lever 3 at the in-process that reciprocating lever 3 removed, through damping part 5's flexonics, can effectual reduction reciprocating lever 3 vibrations and the noise that produces at the removal in-process, and then improve user's experience quality.

It will be appreciated that the drive mechanism 2 is prior art, and the drive mechanism 2 mainly comprises a main gear and a secondary gear, the main gear and the secondary gear are meshed with each other, and the main gear is connected with a drive shaft mounted on the lawnmower, so that the main gear is driven by the drive shaft to rotate, and then the secondary gear is driven by the mesh to rotate synchronously. One end of the reciprocating rod 3 is located in the housing 1 and is connected with a pin shaft arranged on the end face of the pinion through a connecting groove, so that in the process of rotating the pinion, a crank block mechanism can be formed by the pin shaft and the reciprocating rod 3, and the crank block mechanism can drive the grass cutting saw 4 arranged at the other end of the reciprocating rod 3 to perform high-speed reciprocating movement so as to repair branches.

The above-mentioned driving mechanism 2 drives the reciprocating rod 3 to perform the reciprocating movement process, and the substance of the process is that the rotation of the pinion is converted into the moving process of the reciprocating rod 3, and then when the reciprocating rod 3 moves, the direction of the driving force of the pin shaft on the pinion to the axial direction of the reciprocating rod 3 is changed all the time, so the changed driving force can generate the swing trend to the reciprocating rod 3, that is, the reciprocating rod 3 generates the vibration in the moving process. In order to reduce the swing trend of reciprocating rod 3, through installation damping part 5 in casing 1, and carry out the flexonics cooperation through damping part 5 and reciprocating rod 3, and then at reciprocating rod 3 the in-process that carries out reciprocating motion, can carry out radial flexible support to reciprocating rod 3 through damping part 5, thereby can effectual reduction reciprocating rod 3 the radial vibrations that produce in the removal process with the swing trend of suppression reciprocating rod 3, simultaneously can also reduce the noise that produces in the 3 motion processes of reciprocating rod, and then improve user's experience quality.

In one embodiment of the present application, as shown in fig. 1 to 4, the damping member 5 includes a pair of damping rollers 51, and the damping rollers 51 are symmetrically disposed on both sides of the reciprocating rod 3 and respectively make flexible contact with the reciprocating rod 3. The damping rollers 51 which are symmetrically arranged can adapt to the swinging trend of the reciprocating rod 3 in different directions so as to realize bidirectional support of the reciprocating rod 3 and improve the damping effect of the damping component 5.

In this embodiment, as shown in fig. 2 to 4, an inwardly recessed fitting groove 510 is provided in the middle of the outer side of the damper roller 51, so that the damper roller 51 makes flexible contact with the side wall of the reciprocating lever 3 through the fitting groove 510; through the adaptation of cooperation groove 510 and reciprocating rod 3 lateral wall, can effectual improvement damping roller 51 and reciprocating rod 3's area of contact to improve damping roller 51 and to reciprocating rod 3's supporting effect, and then improve damping roller 51's shock attenuation effect and the quality of making an uproar of falling.

It is understood that the sectional shape of the fitting groove 510 is adapted to the sectional shape of the reciprocating lever 3. For example, if the cross section of the reciprocating rod 3 is circular, the cross section of the fitting groove 510 is arc; if the cross section of the reciprocating lever 3 is rectangular, the cross section of the engagement groove 510 is also rectangular.

In this embodiment, the damping roller 51 is made of a soft material, such as a rubber material, and has sufficient supporting strength and can be in flexible contact with the reciprocating rod 3.

In one embodiment of the present application, as shown in fig. 2 to 4, the matching groove 510 is circumferentially disposed on the outer side of the middle portion of the damping roller 51, a mounting hole 511 is axially disposed on the middle core of the damping roller 51, the housing 1 is disposed on two sides of the reciprocating rod 3 and fixedly provided with the mounting shaft 11, the damping roller 51 can be connected with the mounting shaft 11 through the mounting hole 511 in a corresponding rotation manner, so that when the reciprocating rod 3 moves, the damping roller 51 can be driven to rotate around the mounting shaft 11 through the contact matching of the reciprocating rod 3 and the damping roller 51. Through the rotation of damping roller 51 in reciprocating rod 3 removes the in-process, can become rolling friction with the sliding friction of damping roller 51 and reciprocating rod 3, and then can effectual reduction damping roller 51's wearing and tearing to improve damping roller 51's life.

In this embodiment, as shown in fig. 3, a wear sleeve 52 is installed on the side wall of the installation hole 511, and the damping roller 51 can be rotatably engaged with the installation shaft 11 through the wear sleeve 52. The friction force generated by the damping roller 51 and the mounting shaft 11 during rotation can be effectively reduced by the wear-resistant sleeve 52, thereby facilitating the rotation of the damping roller 51.

It can be understood that when the damping roller 51 made of rubber is directly rotationally matched with the mounting shaft 11 through the mounting hole 511, the friction force between the side wall of the mounting hole 511 and the mounting shaft 11 is large, so that the wear of the mounting hole 511 is increased due to long-term use, and the service life of the damping roller 51 is affected. Therefore, the wear of the mounting hole 511 of the damper roller 51 can be effectively reduced by installing a wear-resistant sleeve 52 at the center of the damper roller 51 and by rotatably matching the wear-resistant sleeve 52 with the mounting shaft 11.

In this embodiment, as shown in fig. 4, a wear sleeve 52 is mounted on the side wall of the mounting hole 511, and the wear sleeve 52 and the mounting shaft 11 can be mounted in a matching manner through a plurality of roller pins 53. The friction force of the circumferential rotation of the damper roller 51 can be further reduced by the needle roller 53, thereby further improving the service life of the damper roller 51.

It can be understood that, through a plurality of kingpins 53 circumferentially distributed between the wear-resistant sleeve 52 and the installation shaft 11, the sliding friction between the wear-resistant sleeve 52 and the installation shaft 11 can be changed into the rolling friction, that is, the friction between the wear-resistant sleeve 52 and the installation shaft 11 is reduced, so that the damping roller 51 can be more conveniently moved along with the reciprocating rod 3 to perform circumferential rotation, and the service life of the damping roller 51 can be further prolonged. Meanwhile, the friction force between the wear-resistant sleeve 52 and the mounting shaft 11 is reduced, so that the influence of the temperature of the wear-resistant sleeve 52 generated by friction on the damping roller 51 can be reduced.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A reciprocating saw for mowing comprising:

a housing;

a drive mechanism mounted within the housing;

the reciprocating rod is slidably arranged in the shell, one end of the reciprocating rod is connected with the driving mechanism, the other end of the reciprocating rod is fixedly provided with a grass cutting saw, and the reciprocating rod is suitable for driving the grass cutting saw to reciprocate under the driving of the driving mechanism; and

the damping component is arranged in the shell and is suitable for being in flexible contact fit with the reciprocating rod, so that the damping component can radially support the reciprocating rod in the moving process of the reciprocating rod.

2. The reciprocating saw for mowing of claim 1, wherein: the damping part comprises a pair of damping rollers which are symmetrically arranged on two sides of the reciprocating rod and are respectively in flexible contact with the reciprocating rod.

3. The reciprocating saw for mowing of claim 2, wherein: the middle part of the outer side of the damping roller is provided with an inwards sunken matching groove, so that the damping roller is in flexible contact with the side wall of the reciprocating rod through the matching groove.

4. The reciprocating saw for mowing of claim 2, wherein: the middle part of shock attenuation roller is provided with the mounting hole, the casing is located the fixed installation axle that is provided with in both sides of reciprocating lever, the shock attenuation roller passes through the mounting hole with the installation axle rotates to be connected, so that when the reciprocating lever removed, through the reciprocating lever with the contact cooperation of shock attenuation roller is in order to drive the shock attenuation roller winds the installation axle rotates.

5. The grass cutting reciprocating saw as defined in claim 4, wherein: wear-resisting cover is installed to the lateral wall of mounting hole, the shock attenuation roller is suitable for through wear-resisting cover with the installation axle carries out normal running fit.

6. The grass cutting reciprocating saw as defined in claim 4, wherein: and a wear-resistant sleeve is arranged on the side wall of the mounting hole, and the wear-resistant sleeve and the mounting shaft are suitable for being mounted in a matched manner through a plurality of rolling needles.

7. A reciprocating saw for cutting grass according to any one of claims 2 to 6, wherein: the damping roller is made of rubber.