CN213603232U

CN213603232U - Hand-held working machine

Info

Publication number: CN213603232U
Application number: CN202021777181.6U
Authority: CN
Inventors: 何道刚; 蔡晓勇; 喻诗品; 李家荣; 胡辉; 许宝
Original assignee: Loncin Motor Co Ltd
Current assignee: Loncin Motor Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-07-06
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a hand-held working machine, which comprises a working machine main body and a handrail, and also comprises a connecting component for connecting the working machine main body and the handrail and a positioning component for positioning the handrail; the connecting assembly comprises a mounting seat which can be hinged with the handrail and is arranged on the main body of the working machine, the mounting seat is provided with a connecting part, a containing positioning part and at least one working positioning part, and the working positioning part and the containing positioning part are both positioned on a concentric circle taking the connecting part as the circle center; the handrail comprises a connecting part positioned at the front end of the handrail, the front part of the connecting part is hinged with the connecting part, the rear part of the connecting part is provided with a positioning component, and the positioning component can selectively position or release the handrail at a work positioning part or a storage positioning part. The utility model provides a hand-held working machine through the setting of accomodating location portion and work location portion, can fold the handrail, accomodate convenient collection, convenient operation when this hand-held working machine does not use.

Description

Hand-held working machine

Technical Field

The utility model relates to a hand equipment field especially relates to a hand-held type working machine.

Background

Hand-held gardening working machines, such as hand-held mowers, hand-held mini-tillers and the like, have a handrail comprising: the steel pipe is adopted, but the steel pipe has larger weight and poorer commodity; the pipe is made of light metal (such as aluminum), but the joint of the pipe and the working machine main body is stressed greatly and is easy to bend, deform or break, and in order to achieve the supporting strength, the wall thickness of the pipe must be increased or alloy materials (such as aluminum alloy) are adopted; this obviously increases the cost of the product.

In addition, because the handrail is set up to upwards extend backward from the main body of the working machine, more space is occupied, and in the prior art, the folding and accommodating mechanism of the handrail has a complex structure and is inconvenient to operate.

Therefore, how to improve the folding convenience of the handrail of the walking type working machine is a technical problem which needs to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hand-held working machine, this hand-held working machine can make things convenient for the folding and the position control of handrail, and the stability of handrail obviously improves simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme:

a walking-type working machine comprises a working machine main body and a handrail, and further comprises a connecting assembly for connecting the working machine main body and the handrail and a positioning assembly for positioning the handrail; the connecting assembly comprises a mounting seat which can be hinged with the handrail and is arranged on the main body of the working machine, the mounting seat is provided with a connecting part, a containing positioning part and at least one working positioning part, and the working positioning part and the containing positioning part are both positioned on a concentric circle taking the connecting part as the circle center; the armrest comprises a connecting part at the front end, the front part of the connecting part is hinged with the connecting part, the rear part of the connecting part is provided with the positioning component, and the positioning component can selectively position or release the armrest at the work positioning part or the storage positioning part.

Preferably, the positioning assembly comprises a handle arranged on one side of the connecting part, a positioning pin connected with the handle through a pin shaft and penetrating through the connecting part, a solenoid sleeved on the positioning pin, a positioning nut matched with the solenoid and an elastic component for resetting and pressing the positioning pin; the handle is pulled according to a preset direction and a preset angle, when the handle is close to or far away from the surface of the connecting part, the positioning pin can be pulled to be clamped into or separated from the working positioning part of the mounting seat or the accommodating positioning part.

Preferably, one end of the handle is formed with a cam connected with the positioning pin, the cam comprises a locking part and an unlocking part which are arranged adjacently, and when the handle is operated, the abutting part of the cam is the locking part or the unlocking part, the positioning pin is clamped into or separated from the working positioning part of the mounting seat or the accommodating positioning part.

Preferably, the cam is eccentrically arranged, a hinge point which can be hinged with the positioning pin is arranged in the middle of the cam, the locking part and the unlocking part are respectively located on two adjacent side surfaces of the cam, and the distance between the surface of the locking part and the hinge point is smaller than the distance between the surface of the unlocking part and the hinge point.

Preferably, the connecting portion is a connecting hole, the working positioning portion is a working positioning hole, and the accommodating positioning portion is an accommodating positioning hole.

Preferably, the handrail comprises a tube body, and a reinforcing support is arranged inside the tube body of the connecting part.

Preferably, the connecting part of the armrest is connected with the connecting part of the mounting seat through a bushing, a bolt and a connecting nut; the bushing penetrates through the armrest in the radial direction, and the bolt is positioned inside the bushing, penetrates through the side, away from the armrest, of the mounting seat and is connected with the connecting nut; one end of the bush is abutted with the surface of the mounting seat close to the handrail, the other end of the bush is abutted with a nut of the bolt, and the handrail can rotate relative to the bush.

Preferably, one end of the bushing, which is close to the mounting seat, is provided with an annular step facing one side of the handrail, and elastic gaskets are arranged between the annular step of the bushing and the handrail and between a nut of the bolt and the handrail.

Preferably, the elastic gasket is an arc-shaped plastic gasket.

Preferably, the handle is provided with a connecting part, the connecting part is provided with a connecting part, and the connecting part is provided with a connecting part.

The utility model provides a hand-held working machine, which comprises a working machine main body and a handrail, and also comprises a connecting component for connecting the working machine main body and the handrail and a positioning component for positioning the handrail; the connecting assembly comprises a mounting seat which can be hinged with the handrail and is arranged on the main body of the working machine, the mounting seat is provided with a connecting part, a containing positioning part and at least one working positioning part, and the working positioning part and the containing positioning part are both positioned on a concentric circle taking the connecting part as the circle center; the armrest comprises a connecting part at the front end, the front part of the connecting part is hinged with the connecting part, the rear part of the connecting part is provided with the positioning component, and the positioning component can selectively position or release the armrest at the work positioning part or the storage positioning part. The utility model provides a hand-held working machine, through accomodate location portion with the setting of work location portion can be when this hand-held working machine does not use, will the handrail is folded, is accomodate, convenient collection, convenient operation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a specific embodiment of a walking-type working machine according to the present invention;

fig. 2 is a schematic structural view of a connecting assembly in a walking-type working machine according to the present invention;

FIG. 3 is a schematic view of section A-A of the connector assembly of FIG. 2;

FIG. 4 is an enlarged schematic view of section I of the linkage assembly shown in FIG. 3;

FIG. 5 is a schematic view of the connection assembly of FIG. 4 with the handle open;

FIG. 6 is a schematic structural view of a mounting base in the walk-behind working machine of FIG. 1;

wherein: a handle-1; cam-1-1; hinge points 1-2; a locking portion 1-3; unlocking part 1-4; a pin shaft-2; positioning nut-3; a pressure spring-4; screw-5; bolt-6; an elastic gasket-7; a protective cover-8; thread-9; a connecting nut-10; a bushing-11; a mounting seat-12; a connecting hole-121; a work location hole-122; a receiving positioning hole-123; positioning pin-13; a coil-14; a reinforcing support-15; a handrail-16; a connecting portion-161; a limiting hole-17; -a positioning assembly-18; -a connecting assembly-19; a working machine main body-20.

Detailed Description

The core of the utility model is to provide a hand-held working machine, this hand-held working machine can make things convenient for the folding and the position control of handrail, and the stability of handrail obviously improves simultaneously.

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 6, fig. 1 is a schematic structural diagram of a specific embodiment of a walking-type working machine according to the present invention; fig. 2 is a schematic structural view of a connecting assembly in a walking-type working machine according to the present invention; FIG. 3 is a schematic view of section A-A of the connector assembly of FIG. 2; FIG. 4 is an enlarged schematic view of section I of the linkage assembly shown in FIG. 3; FIG. 5 is a schematic view of the connection assembly of FIG. 4 with the handle open; fig. 6 is a schematic structural view of a mount in the walk-behind working machine shown in fig. 1.

In this embodiment, the walk-behind work machine includes a work machine body 20, a handrail 16, a connecting assembly 19, and a positioning assembly 18. Wherein the connecting assembly 19 is used to connect the work machine body 20 and the armrest 16, and the positioning assembly 18 is used to position the armrest 16. As shown in fig. 1, in the present embodiment, the walk-behind working machine is a walk-behind mower, and the working main body 20 of the walk-behind working machine includes a volute, a power portion disposed on the volute, a blade driven by the power portion under the volute, and a grass collecting device, and certainly includes wheels for the mower to walk, which are all in the prior art and will not be described herein again.

Further, the connecting assembly 19 includes a mounting seat 12, the mounting seat 12 may be hinged to one end of the armrest 16, the mounting seat 12 is provided with a connecting portion, a containing positioning portion and at least one working positioning portion, the armrest 16 is hinged to the connecting portion, and the working positioning portion and the containing positioning portion are both located on a concentric circle with the connecting portion as a circle center; the positioning assembly 18 may alternatively position the armrest 16 in a work position or a storage position.

Specifically, the armrest 16 includes a connection portion 161 at a front end thereof, a front portion of the connection portion 161 being provided to be hinged to the connection portion, and a rear portion thereof being provided with a positioning member 18, the positioning member 18 being capable of selectively positioning or de-positioning the armrest 16 at a work positioning portion or a storage positioning portion.

The utility model provides a hand-held working machine through the setting of accomodating location portion and work location portion, can fold handrail 16, accomodate when this hand-held working machine does not use, convenient collection, convenient operation.

Furthermore, the number of the working positioning parts is at least two, and one handrail 16 can be selected to be clamped with the working positioning parts, so that the height of the end of the handrail 16 can be adjusted by adapting to different operation habits of operators. The number of the housing positioning portions is preferably one, but may be other numbers.

On the basis of the above embodiments, the positioning assembly 18 includes the handle 1 disposed on one side of the connecting portion 161, the positioning pin 13 connected to the handle 1 through a pin 2 and penetrating through the connecting portion 161, the solenoid 14 sleeved on the positioning pin 13, and the positioning nut 3 engaged with the solenoid 14, specifically, the handle 1 can pull the pin 2 to move so as to drive the positioning pin 13 to disengage from the working positioning hole 122, and at this time, the swing armrest 16 can change the position of the armrest 16. Preferably, a step part is arranged on one side of the solenoid 14 close to the mounting seat 12, and a step surface of the step part departing from the mounting seat 12 is limited with the side surface of the handrail 16 to prevent the movement to the scheme close to the mounting seat 12; the positioning nut 3 is positioned on one side of the handrail 16 close to the handle 1, and the handle 1 is in contact with the surface of the positioning nut 3.

On the basis of the above embodiments, a cam 1-1 connected with a positioning pin 13 is formed at one end of the handle 1, the cam 1-1 comprises a locking portion 1-3 and an unlocking portion 1-4 which are adjacently arranged, and when the handle 1 is operated to enable the interference portion of the cam 1-1 to be the locking portion 1-3 or the unlocking portion 1-4, the positioning pin 13 is clamped into or separated from the working positioning portion or the accommodating positioning portion of the mounting seat 12. Specifically, the cam 1-1 is arranged eccentrically, the middle of the cam 1-1 is provided with a hinge point 1-2 which can be hinged with the positioning pin 13, the locking part 1-3 and the unlocking part 1-4 are respectively positioned on two adjacent side surfaces of the cam 1-1, the distance between the surface of the locking part 1-3 and the hinge point 1-2 is smaller than the distance between the surface of the unlocking part 1-4 and the hinge point 1-2, and the eccentric cam 1-1 is arranged, so that the operating handle 1 enables the interference part of the cam 1-1 to be conveniently switched between the locking part 1-3 and the unlocking part 1-4 and saves labor.

Setting of the handle 1: the handle 1 can be arranged along the central line direction of the handrail 16, and can also be arranged along the radial direction of the handrail 16; the angle of pulling the handle 1 is preferably 90 degrees. In the embodiment, the handle 1 is arranged along the central line direction of the armrest 16, when the handle body is close to the armrest, the handle 1 drives the positioning pin to be clamped into the working positioning part or the accommodating positioning part of the mounting seat 12 under the action of the cam 1-1 at one end of the handle 1, and at the moment, the abutting part of the cam 1-1 and the positioning nut 3 is the locking part 1-3; the handle 1 is pulled to be away from the armrest 16, the locking part 1-3 of the cam 1-1 is switched to the adjacent unlocking part 1-4, when the handle 1 is pulled to a preset angle, the angle is smaller than 90 degrees, due to the eccentric arrangement of the cam 1-1, the handle 1 rapidly reaches the 90-degree position under the condition of extremely small force, the collision part of the cam 1-1 and the positioning nut 3 is rapidly switched to the unlocking part 1-4 from the locking part 1-3, and the positioning pin 13 is also rapidly switched to a disengagement state from a clamping state under the action of the cam 1-1. And vice versa. It should be noted here that, at the preset angle that handle 1 was pulled, can set up spacing part, can realize quick spacing, the quick unblock of being convenient for, it is easy and simple to handle accurate.

Further, the positioning assembly 18 further includes an elastic member for resetting and pressing the positioning pin 13, the handle 1 can pull the positioning pin 13 to disengage from the working positioning portion or the accommodating positioning portion of the mounting base 12, and when the armrest 16 drives the positioning pin 13 to move to the next working positioning portion or the position of the accommodating positioning portion, the handle 1 is reset, and the elastic member can press the elastic pin in the working positioning hole 122 or the accommodating positioning hole 123. Specifically, for convenience of operation, the handle 1 is in a rod shape, the lever principle is utilized, the adjustment is labor-saving, the height of the rotation center of the handle 1 in the opening and closing positions from the contact surface of the handle and the positioning nut 3 is a difference, the height difference is the working stroke of the positioning pin 13, and the height difference is larger than the depth of the positioning pin 13 inserted into the mounting seat 12.

Preferably, the elastic component is installed on one side of the positioning pin 13 close to the pin shaft 2, the elastic component is preferably a pressure spring 4, and specifically, the diameter of one side of the positioning pin 13 close to the pin shaft 2 is smaller than that of the other side, so that the compression spring 4 can be conveniently sleeved and limited.

Preferably, for convenience of connection and positioning, the connecting portion is a connecting hole 121, the working positioning portion is a working positioning hole 122, and the receiving positioning portion is a receiving positioning hole 123, i.e., the connecting portion, the working positioning portion, and the receiving positioning portion are preferably in a hole shape. Of course, the connecting portion, the operation positioning portion, and the housing positioning portion are not limited to the holes, and may be grooves.

In addition to the above embodiments, the armrest 16 includes a tubular body, and a reinforcing support 15 is provided inside the tubular body on a side close to the mounting seat 12. With the above arrangement, the strength of the connecting portion 161 can be increased by embedding the reinforcing support 15 inside the connecting portion 161 of the handrail 16, so that the strength requirement of the connecting portion 161 can be satisfied without additionally increasing the thickness under the general strength of the handrail 16 using a lightweight pipe material.

Further, the connecting part 161 of the armrest 16 is connected with the connecting part of the mounting seat 12 through the bushing 11, the bolt 6 and the connecting nut 10; the bush 11 penetrates along the radial direction of the handrail 16, the bolt 6 is positioned inside the bush 11 and penetrates to the side of the mounting seat 12, which is far away from the handrail 16, and then the bolt is connected with the connecting nut 10; one end of the bush 11 abuts against the surface of the mounting seat 12 close to the armrest 16, and the other end abuts against the nut of the bolt 6, and after connection, the bush 11 is completely fastened, and the armrest 16 can rotate relative to the bush 11. Specifically, the length of the portion of the bushing 11 extending through the handrail 16 should be greater than the diameter of the tube of the handrail 16 to facilitate the rotation of the handrail 16 relative to the bushing 11.

In addition to the above embodiments, the bushing 11 has an annular step toward the armrest 16 at one end close to the mounting seat 12, and the annular step prevents the armrest 16 from moving toward the mounting seat 12.

Preferably, an elastic gasket 7 is arranged between the annular step of the bushing 11 and the handrail 16, the elastic gasket 7 is arranged between the nut of the bolt 6 and the handrail 16, and the elastic gasket 7 can supplement the gap between the annular step and the handrail 16 and the gap between the nut and the handrail 16, reduce the shaking of the handrail 16 and keep the handrail stable.

More preferably, the elastic pad 7 is an arc-shaped plastic pad. Specifically, the arc-shaped plastic gasket is tightly attached to the handrail 16 after being extruded and deformed, so that the handrail 16 can rotate around the bushing 11 without axial movement.

In addition to the above embodiments, the present invention further includes a protective cover 8 covering the outside of the connection portion 161 of the armrest 16, and the protective cover 8 is provided with a stopper hole 17 for preventing the rotation of the handle 1. Preferably, the contact surface of the handle 1 and the positioning nut 3 is a square surface, and the limiting hole 17 on the protective cover 8 is a square hole.

Further, the protective cover 8 is mounted on the handrail 16 through the screw 5 and the reinforcing support 15, namely the screw 5 can be mounted on the reinforcing support 15 after penetrating through the pipe wall of the handrail 16, the protective cover 8 can cover and fix the cable 9 and other parts, and a square hole is formed in the protective cover to limit the handle 1 and prevent the handle 1 from rotating around the central line of the positioning pin 13.

Specifically, when the armrest 16 is locked, the positioning pin 13 is inserted into any one of the working positioning holes 122 of the mounting seat 12 under the pre-tightening force of the compression spring 4; when the height of the armrest 16 needs to be adjusted, the handle 1 is opened, the positioning pin 13 is pulled out from the positioning hole of the mounting seat 12 under the driving of the pin shaft 2, the armrest 16 is rotated to align the positioning pin 13 with another working positioning hole 122 of the mounting seat 12, the handle 1 is closed, the positioning pin 13 is inserted into the mounting seat 12, and the working positioning hole 122 is positioned, that is, the primary height adjustment of the armrest 16 is completed.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The hand-held working machine provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A walk behind work machine comprising a work machine body (20) and a handrail (16), characterised by a connection assembly (19) for connecting the work machine body (20) and the handrail (16) and a positioning assembly (18) for positioning the handrail (16); the connecting assembly (19) comprises a mounting seat (12) which can be hinged with the handrail (16) and is arranged on a working machine main body (20), the mounting seat (12) is provided with a connecting part, a containing positioning part and at least one working positioning part, and the working positioning part and the containing positioning part are both positioned on a concentric circle with the connecting part as the circle center; the armrest (16) comprises a connecting part (161) at the front end thereof, the front part of the connecting part (161) is arranged to be hinged with the connecting part, the rear part thereof is provided with the positioning component (18), and the positioning component (18) can selectively position or release the armrest (16) at the work positioning part or the storage positioning part.

2. The walking type working machine according to claim 1, wherein the positioning assembly (18) comprises a handle (1) arranged at one side of the connecting portion (161), a positioning pin (13) connected with the handle (1) through a pin shaft (2) and penetrating through the connecting portion (161), a solenoid (14) sleeved on the positioning pin (13), a positioning nut (3) matched with the solenoid (14), and an elastic component for resetting and pressing the positioning pin (13); wrenching according to preset direction and preset angle handle (1), work as handle (1) is close to or keeps away from the surface of coupling part (161), can pull locating pin (13) card is gone into or is broken away from the work location portion or the storage location portion of mount pad (12).

3. The walking type working machine according to claim 2, wherein a cam (1-1) connected with the positioning pin (13) is formed at one end of the handle (1), the cam (1-1) comprises a locking part (1-3) and an unlocking part (1-4) which are adjacently arranged, and when the handle (1) is operated to enable the interference part of the cam (1-1) to be the locking part (1-3) or the unlocking part (1-4), the positioning pin (13) is clamped into or separated from the working positioning part or the accommodating positioning part of the mounting seat (12).

4. A walking type working machine according to claim 3, characterized in that the cam (1-1) is eccentrically arranged, the middle part of the cam (1-1) is provided with a hinge point (1-2) which can be hinged with the positioning pin (13), the locking part (1-3) and the unlocking part (1-4) are respectively positioned on two side surfaces adjacent to the cam (1-1), and the distance between the surface of the locking part (1-3) and the hinge point (1-2) is smaller than the distance between the surface of the unlocking part (1-4) and the hinge point (1-2).

5. A walk behind working machine according to claim 1, wherein the connecting portion is a connecting hole (121), the work locating portion is a work locating hole (122), and the receiving locating portion is a receiving locating hole (123).

6. A hand-held working machine according to any one of claims 1 to 5, characterised in that the handrail (16) comprises a tubular body, inside which the connecting portion (161) is provided with a reinforcing abutment (15).

7. A hand-held working machine according to claim 6, characterised in that the connection between the connecting portion (161) of the armrest (16) and the connection to the mounting (12) is by means of a bushing (11), a bolt (6) and a coupling nut (10); the bushing (11) penetrates through the armrest (16) in the radial direction, the bolt (6) is positioned inside the bushing (11) and penetrates through the side, facing away from the armrest (16), of the mounting seat (12) to be connected with the connecting nut (10); one end of the bush (11) abuts against the surface of the mounting seat (12) close to the handrail (16), the other end abuts against the nut of the bolt (6), and the handrail (16) can rotate relative to the bush (11).

8. A hand-held working machine according to claim 7, characterised in that the end of the bushing (11) near the mounting (12) is provided with an annular step towards the side of the handrail (16), and that elastic washers (7) are provided between the annular step of the bushing (11) and the handrail (16) and between the nut of the bolt (6) and the handrail (16).

9. A walking-type work machine according to claim 8, characterized in that the resilient pad (7) is an arc-shaped plastic pad.

10. A hand-held working machine according to claim 2, further comprising a protective cover (8) covering the outside of the connecting portion (161) of the armrest (16), the protective cover (8) being provided with a stopper hole (17) for preventing the rotation of the handle (1).