CN106612895B

CN106612895B - Anticollision lawn mower

Info

Publication number: CN106612895B
Application number: CN201611156512.2A
Authority: CN
Inventors: 陈刚; 张进
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2016-12-14
Filing date: 2016-12-14
Publication date: 2022-12-13
Anticipated expiration: 2036-12-14
Also published as: CN106612895A

Abstract

The invention discloses an anti-collision mower which comprises a mower body and a movable outer cover capable of moving relative to the mower body, and is characterized in that the mower further comprises: the connecting column is arranged between the machine body and the movable outer cover, the movable outer cover drives the connecting column to swing when moving, one end of the connecting column is provided with a ball head, and the ball head is rotatably connected with the movable outer cover; and the elastic piece is arranged between the connecting column and the machine body and used for buffering the swinging of the connecting column. The movable outer cover has the advantages that the impact force applied to the movable outer cover can be effectively buffered, and the service life of the mower is prolonged.

Description

Anticollision lawn mower

[ technical field ] A method for producing a semiconductor device

The invention relates to an anti-collision mower, and belongs to the field of garden machinery.

[ background of the invention ]

The gradual adoption of automated control by garden tools is a development trend in the current market. Lawn mowers are still widely available in the market today and from the field of lawn mowers, intelligent lawn mowers have evolved slowly from traditional manual lawn mowers. However, the intelligent mower has more problems due to late starting, and particularly when the intelligent mower works on a lawn, the intelligent mower collides with an obstacle, and directly impacts a housing of the mower, so that the service life of the mower is greatly influenced.

The intelligent lawn mower on the existing market has relevant anti-collision device, the shell about to intelligent lawn mower is set to be movable, the shell is connected with the machine body through the rubber flexible connecting piece, the effect of buffering and resetting is achieved, however, the rubber piece is extremely easy to age, the service life is short, the return precision becomes low after multiple bending deformation, and the control sensitivity of the intelligent lawn mower can be influenced to a certain degree.

[ summary of the invention ]

The invention aims to overcome the defects in the prior art and provide an anti-collision mower which can effectively buffer the impact force on a movable outer cover and prolong the service life of the mower.

The technical scheme adopted by the invention is as follows:

an anti-collision mower comprising a body and a movable housing movable relative to said body, said mower further comprising:

the connecting column is arranged between the machine body and the movable outer cover, the movable outer cover drives the connecting column to swing when moving, a ball head is arranged at one end of the connecting column, and the ball head is rotatably connected with the movable outer cover;

and the elastic piece is arranged between the connecting column and the machine body and used for buffering the swinging of the connecting column.

The invention has the following beneficial effects:

in the invention, the connecting column is rotationally connected to the inner wall of the movable outer cover through the ball head, compared with the original connecting mode of a rubber piece, the connecting mode in the invention is not easy to age, has better stability, can not cause the problems of connection failure and the like even in long-term use, and has longer service life.

The traditional rubber part is rotated and twisted by means of deformation and bending, an extrusion effect exists between the rubber part and the movable outer cover, and the rubber part is greatly abraded after long-term use.

In addition, the elastic element is arranged between the connecting column and the machine body, when the movable outer cover collides with a barrier, the ball head and the movable outer cover rotate, the acting force of the movable outer cover on the machine body can be buffered by the elastic element, so that the rigid acting force of the movable outer cover on the machine body is reduced, and meanwhile, the elastic element can generate restoring force after deformation, so that the collided movable outer cover can restore to the initial position.

Preferably, the inner wall of the movable outer cover is provided with a caulking groove, and the ball head is movably connected in the caulking groove.

Preferably, a first pressing plate is mounted on an inner wall of the movable housing, a lower groove is formed in a side of the first pressing plate facing the inner wall of the movable housing, and the ball head is clamped between the recessed groove and the lower groove.

Preferably, the indentations and/or the lower indentations are spherical indentations.

Preferably, the first pressing plate extends towards the movable housing to form an annular surrounding wall, the annular surrounding wall surrounds the lower groove, and an open groove is formed in the annular surrounding wall.

Preferably, the caulking groove is a spherical clamping groove, an opening seam is arranged on the wall of the spherical clamping groove, and the ball head is clamped in the spherical clamping groove.

Preferably, a movable support is further arranged between the machine body and the movable outer cover, the movable support is rotatably connected to the machine body, the connecting column is rotatably connected to the movable support, and the rotating axis of the movable support is perpendicular to the rotating axis of the connecting column.

Preferably, the machine body is provided with a second pressing plate, and the movable support is rotatably connected between the second pressing plate and the machine body.

Preferably, the front side wall and the rear side wall of the movable support are provided with protruding columns, the protruding columns are rotatably connected in a circular groove formed between the second pressing plate and the machine body, the left side wall and the right side wall of the movable support are provided with pin holes, and the side parts of the connecting columns are rotatably connected in the pin holes through pin shafts.

Preferably, the bottom end of the connecting column is provided with a containing groove for containing the elastic piece, and the elastic piece is compressed between the containing groove and the machine body.

Preferably, the roof downwardly extending of storage tank has lower extension post, the cover has the support gasket on the lower extension post, the elastic component is the spring, the spring compression is between the roof of support gasket and storage tank.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is an exploded view of a first embodiment of the mower of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

FIG. 4 is a schematic view, partially in section, of a movable housing of a lawnmower according to an embodiment of the invention when the movable housing is not impacted;

FIG. 5 is a schematic view, partially in section, of a movable housing of a lawnmower according to an embodiment of the invention in an impacted condition;

FIG. 6 is a schematic view, partially in section, of a second embodiment of the mower without the moveable cover being carried;

FIG. 7 is a schematic view, partially in section, showing a movable housing of a second embodiment of the mower of the present invention being carried;

fig. 8 is a schematic view of the installation position of the displacement sensor in the second embodiment of the lawn mower of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment is an intelligent lawn mower, which mainly includes a mower body 1, a driving wheel 11 and a driven wheel 12 are installed on the mower body 1, a control circuit is installed inside the mower body 1, a movable housing 2 that can move relative to the mower body 1 is installed above the mower body 1, the outline of the movable housing 2 is larger than the outline of the mower body 1, a movable connection member is connected between the movable housing 2 and the mower body 1, the intelligent lawn mower automatically performs self-propelled mowing operation under the action of the control circuit, and in the walking process, the movable housing 2 can collide with an obstacle, so that relative displacement occurs between the movable housing 2 and the mower body 1, and a displacement sensor is used to send a signal to the control circuit to control the intelligent mower to walk in a reverse direction or in a lateral direction.

In order to reduce the impact force applied to the movable housing 2, the connection mode between the movable housing 2 and the machine body 1 is optimized in this embodiment, in general, four corners of the machine body 1 are provided with movable connectors, each movable connector in this embodiment includes a universal joint component and an elastic component 7, each universal joint component includes a connecting column 3, the top end of the connecting column 3 is provided with a ball 31, the inner wall of the movable housing 2 is provided with an embedding slot 21, the ball 31 can rotate at any angle in the embedding slot 21, and the elastic component 7 is arranged between the other end of the connecting column 3 and the machine body 1.

Traditional lawn mower then relies on the rubber spare to warp the bending and realizes rotating, the wrench movement, there is the squeezing action between rubber spare and the activity dustcoat 2, the wearing and tearing of using the rubber spare for a long time are great, and bulb 31's structure in this embodiment, not only be difficult for ageing, and can realize the rotation of arbitrary direction and not take place to interfere with activity dustcoat 2, activity dustcoat 2 receives the rotational friction who changes into with bulb 31 when striking, rigidity reaction force can not take place between activity dustcoat 2 and the bulb 31, wearing and tearing are very little between bulb 31 and the activity dustcoat 2 under the long-term use state, stability is better.

In addition, when the movable housing 2 collides with an obstacle, the ball head 31 rotates with the movable housing 2, and the acting force of the movable housing 2 on the body 1 is buffered by the elastic element 7, so that the rigid acting force of the movable housing 2 on the body 1 is reduced, and meanwhile, the elastic element 7 generates restoring force after being deformed, so that the collided movable housing 2 can be restored to the initial position.

Referring to fig. 2 and 3, in the embodiment, the recessed groove 21 of the movable housing 2 is actually a spherical groove, specifically, a hemispherical groove, i.e., the depth of the hemispherical groove is smaller than the radius of the ball head 31, the ball head 31 is merely fit in the recessed groove 21, the first pressing plate 4 is mounted on the inner wall of the movable housing 2, the top of the first pressing plate 4 is provided with a lower groove 41, the lower groove 41 is also a spherical groove, the ball head 31 is clamped between the recessed groove 21 and the lower groove 41, the recessed groove 21 and the lower groove 41 limit the freedom of up and down movement of the ball head 31, but the freedom of rotation of the ball head 31 is not limited, and the ball head 31 can still freely rotate between the recessed groove 21 and the lower groove 41.

It should be noted that the

grooves

21 and 41 are preferably spherical grooves matching the shape of the ball 31 in the present embodiment, but those skilled in the art can easily understand that the shape may be square grooves, tapered grooves, etc., as long as the ball 31 can freely rotate between the

grooves

21 and 41.

The lower groove 41 in this embodiment is specifically formed by the surrounding of the annular wall, which is extended from the top of the first pressing plate 4 toward the movable cover 2, the annular wall is provided with four open slots 42, the number of the open slots 42 in this embodiment is four, the slots are uniformly arranged on the annular wall in the circumferential direction, the design of the open slots 42 enables the annular wall to have better expansion capability, and when the ball head 31 is installed, the ball head penetrates from the lower part of the annular wall firstly, and penetrates out from the annular wall by using the expansion capability of the annular wall.

The front side and the rear side of the first pressure plate 4 are respectively provided with a lug 43, the lugs 43 are provided with through holes, and screws penetrate through the through holes to fasten the first pressure plate 4 on the inner wall of the movable outer cover 2.

In this embodiment, the universal joint assembly further comprises a movable support 6, the movable support 6 is rotatably connected to the machine body 1, the connecting column 3 is rotatably connected to the movable support 6, and a rotation axis of the movable support 6 is perpendicular to a rotation axis of the connecting column 3. A universal joint connection mode is formed, and the connecting column 3 can rotate at any angle with the machine body 1 theoretically.

For convenience of description, in this embodiment, the front-back direction of the lawn mower is defined as the X-axis direction, the left-right direction of the lawn mower is defined as the Y-axis direction, and the direction of gravity is defined as the Z-axis direction. Wherein the rotation axis of the movable bracket 6 is in the X-axis direction, and the rotation axis of the connecting column 3 is in the Y-axis direction.

The structure is as follows: the movable support 6 is actually a ring-shaped member, including preceding lateral wall, the back lateral wall, the left side wall, the right side wall, wherein be equipped with the projection 61 on preceding lateral wall and the back lateral wall of movable support 6 respectively, projection 61 in this embodiment is cross post, be equipped with pinhole 62 on the left side wall of movable support 6 and the right side wall respectively, the axial direction of pinhole 62 is Y axle direction promptly, the axial direction of two projections 61 is the X axle direction, the lateral part of spliced pole 3 is equipped with side opening 32, the universal joint subassembly still includes round pin axle 63, round pin axle 63 passes pinhole 62 in proper order, side opening 32 articulates spliced pole 3 on movable support 6.

In addition, the universal joint subassembly still includes

second clamp plate

5, 5 four edges of second clamp plate pass through the screw fastening on organism 1, be equipped with first semicircular groove 51 on the preceding lateral wall of second clamp plate 5 and the back lateral wall respectively, then be equipped with down semicircular groove 13 on the organism 1, second clamp plate 5 fastens the back on the organism 1, first semicircular groove 51 forms the circular recess with lower semicircular groove 13, two projections 61 of movable support 6 are fixed a position in this circular recess, the top of second clamp plate 5 is equipped with the central hole 52 that supplies spliced pole 3 to pass, central hole 52 can also play certain limiting displacement, prevent that spliced pole 3 from excessively swinging promptly.

After the whole equipment is accomplished, can realize arbitrary angle between the top of spliced pole 3 and the activity dustcoat 2 promptly and rotate, and also can realize arbitrary angle between spliced pole 3 and the organism 1 and rotate to make activity dustcoat 2 when striking the barrier, the swing of spliced pole 3 is very free, and whatever angle the collision can all be transformed into the rotation of spliced pole 3, and the swing of spliced pole 3, what correspondingly brought is the deformation of the elastic component 7 in spliced pole 3 bottom.

The elastic member 7 in this embodiment is a spring, and has a specific structure, as shown in fig. 4 and 5, the bottom of the connecting column 3 in this embodiment is provided with a receiving groove 33, the top wall of the receiving groove 33 extends downward to form a lower extending column 34, the lower extending column 34 is sleeved with a supporting gasket 35, the supporting gasket 35 includes a hollow column 351 and a gasket 352 extending radially outward from the hollow column 351, the hollow column 351 is sleeved on the lower extending column 34, and a spring is compressed between the gasket 352 and the top wall of the receiving groove 33.

In order to reduce the wear between the supporting pad 35 and the machine body 1, the bottom edge of the supporting pad 35 is chamfered to form a round chamfer, so that when the connecting column 3 rotates, the arc between the supporting pad 35 and the machine body 1 is excessive, and the resistance is smaller.

Example 2

As shown in fig. 6 to 8, the difference between this embodiment and embodiment 1 is that in this embodiment, the connecting column 3 is designed to be split, and includes a lower column 302 and an upper column 301 that can be displaced relative to the lower column 302 in the vertical direction, the lower column 302 is connected to the machine body 1, the upper column 301 is connected to the movable housing 2, when the movable housing 2 is lifted, the upper column 301 is driven to be lifted relative to the lower column 302, when the mower is moved manually, a force is generally exerted on the movable housing 2, when the movable housing 2 is subjected to an upward acting force, the two components of the upper column 301 and the lower column 302 are triggered to move relative to each other in the vertical direction, the relative movement distance between the two components is significantly greater than the micro-displacement of the whole connecting column 3, the movement distance is increased, the displacement sensor 9 can sense the displacement change, and send a signal to the control circuit, so that the control circuit cuts off the power supply of the mower.

Specifically, in this embodiment, the ball 31 is disposed at the top of the upper column 301, the upper column 301 and the movable housing 2 are rotatably connected through the ball 31, the lower column 302 is rotatably connected to the movable support 6, the upper column 301 is provided with a sliding cavity 3011, the lower column 302 is installed in the sliding cavity 3011, the peripheral side surface of the lower column 302 is in clearance fit with the inner side wall of the sliding cavity 3011, the lower column 302 can slide up and down in the sliding cavity 3011, and during normal operation, the top of the lower column 302 abuts against the top wall of the sliding cavity 3011, as shown in fig. 6, when the movable housing 2 is lifted, the upper column 301 rises along with the movable housing 2 and is separated from the lower column 302.

In order to prevent the upper column 301 and the lower column 302 from being completely separated, in this embodiment, the ascending distance of the upper column 301 is limited, a limiting ring 3012 radially extends from the bottom of the peripheral side surface of the upper column 301, and the outer diameter of the limiting ring 3012 is smaller than the diameter of the central hole 52, so that when the upper column 301 ascends, when the limiting ring 3012 abuts against the top wall of the second pressing plate 5, the upper column 301 cannot ascend continuously, thereby ensuring that the lower column 302 cannot be completely separated from the sliding inner cavity 3011, and when the upward acting force of the movable outer cover 2 disappears, the upper column 301 naturally falls onto the lower column.

The displacement sensor 9 in this embodiment may be a potentiometer displacement sensor, a hall displacement sensor or a photoelectric displacement sensor, and these displacement sensors are all common elements in the field of displacement sensors, and are not described too much, and in this embodiment, the hall displacement sensor is preferably used, and in this embodiment, the hall displacement sensor is installed between the movable outer cover 2 and the machine body 1, and the installation position is not fixed as long as the displacement can be sensed.

It should be noted that, this embodiment is a preferable solution, if only the vertical displacement between the movable cover and the machine body is detected, the ball and the universal joint assembly are not necessary, and the upper column is only arranged on the movable cover, and the lower column is arranged on the machine body, and such embodiments all fall within the protection scope of the present invention.

As to the specific connection structure between the upper column and the lower column, those skilled in the art should also know that the connection structure is not limited to the embodiment, and the upper column and the lower column may be slid in the form of other sliding rails, or connected by a spring, etc., as long as relative displacement can be generated, and all that is within the scope of the present invention should be considered.

Example 3

The difference between this embodiment and embodiment 1 lies in that the caulking groove in this embodiment is a spherical clamping groove, and the difference with the hemispherical groove in embodiment 1 lies in that the depth of the spherical clamping groove is greater than the radius of the ball head, during installation, the ball head can be directly clamped in the spherical clamping groove, the spherical clamping groove can surround most of the ball head, after clamping, the clamping does not need a first pressing plate to clamp, the clamping can be directly realized by using one spherical clamping groove, in order to allow the ball head to be smoothly clamped into the spherical clamping groove, an opening seam is arranged on the wall of the spherical clamping groove in this embodiment, the opening seam can allow the spherical clamping groove to have an expansion effect, and the design is similar to the open slot design in the embodiment.

Example 4

The difference between this embodiment and embodiment 1 lies in that, there is no supporting pad in this embodiment, and only the spring is compressed between the bottom of the connecting column and the machine body 1, and the machine body extends upward to form an upper extending column, and the bottom of the spring is sleeved in the upper extending column, and the top of the spring is accommodated in the accommodating groove.

Example 5

The difference between this embodiment and embodiment 1 is that in this embodiment, the movable housing and the machine body are not connected through a universal joint assembly, but only include a connection column, wherein the top of the connection column is still a ball head, the structure is the same as that in embodiment 1, and the bottom of the connection column is directly connected with the machine body through an elastic member, and the elastic member may be a spring or a rubber soft column, which is structurally simpler than embodiment 1.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. An anti-collision mower comprising a mower body and a movable housing movable relative to said mower body, said mower further comprising:

the connecting column is arranged between the machine body and the movable outer cover, the movable outer cover drives the connecting column to swing when moving, one end of the connecting column is provided with a ball head, and the ball head is rotatably connected with the movable outer cover;

the elastic piece is arranged between the connecting column and the machine body and used for buffering the swinging of the connecting column; the bottom end of the connecting column is provided with a containing groove for containing the elastic piece, and the elastic piece is compressed between the containing groove and the machine body;

the top wall of the accommodating groove extends downwards to form a lower extension column, a support gasket is sleeved on the lower extension column, the elastic piece is a spring, and the spring is compressed between the support gasket and the top wall of the accommodating groove; and a control circuit is arranged in the machine body.

2. The anti-collision mower according to claim 1, wherein a caulking groove is formed in an inner wall of the movable housing, and the ball head is movably connected into the caulking groove.

3. The anti-collision mower according to claim 2, wherein a first pressure plate is mounted on the inner wall of the movable housing, a lower groove is formed in a side of the first pressure plate facing the inner wall of the movable housing, and the ball head is clamped between the recessed groove and the lower groove.

4. A collision-resistant lawnmower as claimed in claim 3 wherein the bezel and/or the lower groove is a spherical groove.

5. The impact-resistant mower of claim 4 wherein said first pressure plate extends toward said movable housing with an annular perimeter wall, said annular perimeter wall defining said lower recess, said annular perimeter wall defining an open slot.

6. The anti-collision mower of claim 2, wherein the caulking groove is a spherical clamping groove, an opening seam is formed in the wall of the spherical clamping groove, and the ball head is clamped in the spherical clamping groove.

7. The anti-collision mower according to claim 1, wherein a movable bracket is further disposed between the main body and the movable housing, the movable bracket is rotatably connected to the main body, the connecting post is rotatably connected to the movable bracket, and a rotation axis of the movable bracket is perpendicular to a rotation axis of the connecting post.

8. The impact-resistant mower of claim 7 wherein a second pressure plate is mounted to said body, said movable bracket being pivotally connected between said second pressure plate and said body.

9. The anti-collision mower according to claim 8, wherein the front side wall and the rear side wall of the movable bracket are provided with protruding columns, the protruding columns are rotatably connected in circular grooves formed between the second pressing plate and the mower body, pin holes are formed in the left side wall and the right side wall of the movable bracket, and the side portions of the connecting columns are rotatably connected in the pin holes through pin shafts.