TWM461310U - Lawn mower - Google Patents

Description

Lawn mower

The present invention relates to a lawn mower, and more particularly to a lawn mower that can drive a knife holder to rotate to cut weeds.

General lawn mowers are used to cut turf or weeds in gardens, lawns, grasshoppers and roadsides. Currently, a wide variety of lawn mowers have been developed on the market, mostly using an electric motor or a gasoline engine. Driving a knife seat to mowing at a high speed, however, because the height of the grass to be retained in each place is different, the above mower cannot adjust the distance of the blade to the ground according to the length of the desired mowing. The height, so the grass can only be cut at a fixed height, and can not meet the needs of various mowing, so the design of the above mower still needs to be improved.

Therefore, the object of the present invention is to provide a lawn mower that can adjust the height of mowing.

Thus, the novel lawn mower includes a body device, a lifting device mounted to the body device, and a mowing device mounted to the lifting device.

The body device includes a frame, and several of them can be driven separately And a wheel rotatably mounted to the frame, and a mounting seat extending on the frame and extending upwardly, the mounting seat defines a guiding groove that communicates with the upper and lower sides.

The lifting device comprises a sliding seat axially movable and non-rotatably mounted in the guiding groove of the mounting seat, and a rotating seat rotatably mounted on the mounting seat and capable of driving the sliding seat, the sliding seat Having a first threaded portion, the rotating seat having a second threaded portion screwed to the first threaded portion of the sliding seat, when the rotating seat is driven to rotate, the engaging portion is driven to move the sliding seat relative to the mounting The seat moves up and down.

The mowing device includes a motor mounted on the sliding seat and moving along the sliding seat, and a seat located under the sliding seat and the frame and driven by the motor, the mowing device can be lifted The device moves up and down to adjust the height from the ground.

1‧‧‧ body device

11‧‧‧Rack

12‧‧‧ Wheels

13‧‧‧Shell

131‧‧‧Transforation

132‧‧‧ Ring Office

133‧‧‧ convex tooth

134‧‧‧ card slot

14‧‧‧ Mounting

141‧‧

142‧‧ ‧ rail slot

143‧‧‧Limited

2‧‧‧ lifting device

21‧‧‧Sliding seat

211‧‧‧ First Ring

212‧‧‧First threaded part

213‧‧‧Roads

214‧‧‧Restricted Department

22‧‧‧ Rotating seat

221‧‧‧ Shoulder

222‧‧‧ Second Ring

223‧‧‧Second thread

224‧‧‧The first embedded card department

23‧‧‧ Limit ring

24‧‧‧ Rotary button

241‧‧‧ Turning the head

242‧‧‧ pawl

243‧‧‧ shaft part

244‧‧‧Second embedded card department

3‧‧‧Mow cutting device

31‧‧‧Motor

32‧‧‧Knife holder

321‧‧‧ Turntable Department

322‧‧‧grass

33‧‧‧ Cover

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view of a preferred embodiment of the present lawn mower; FIG. 2 is a preferred embodiment of the present invention. Figure 3 is a partial cross-sectional side view of the preferred embodiment; and Figure 4 is a view similar to Figure 3 illustrating a lifting device driving a mowing device down.

Referring to Figures 1, 2 and 3, one of the novel lawn mowers is preferred. The embodiment includes a body device 1, a lifting device 2 attached to the body device 1, and a mowing device 3 attached to the lifting device 2 and being lifted and lowered by the lifting device 2 to adjust the height of the ground.

The body device 1 includes a frame 11, a plurality of wheels 12 respectively rotatably mounted to the frame 11, a casing 13 covering the top of the frame 11, and a body disposed on the machine The frame 11 and the mounting seat 14 extending upward in the direction of the outer casing 13. Of course, the body device 1 further includes some structures not shown and mounted to the frame 11, such as a power source for driving the wheels 12, a control unit for controlling the power source and the mowing device 3. And a power source that provides the power source and the power of the control unit, etc., but since these structures are not the focus of the present invention, they will not be described here.

The outer casing 13 has a ring portion 132 corresponding to the mounting seat 14 and surrounding the annular opening 131, and a plurality of convex teeth 133 formed around the annular portion 132 at an angular interval from each other. A card slot 134 is defined between each two adjacent convex tooth portions 133. The mounting seat 14 is a hollow annular body, and defines a guiding groove 141 defining an upper and lower axial direction and communicating with the rotating hole 131, and has three concave and concave inner peripheral surfaces respectively communicating with the guiding groove 141. The extending rail groove 142 and a limiting portion 143 protruding from one of the rail grooves 142 of the rail groove 142. Of course, the number of the rail slots 142 can also be increased or decreased. For example, the mounting bracket 14 can have only one rail slot 142, and the number of the limiting portions 143 can also be increased. For example, the mounting bracket 14 can have two. Or three limit portions 143.

The lifting device 2 includes an axial movement that cannot be rotated a sliding seat 21 mounted in the guiding groove 141 of the mounting seat 14, a rotating seat 22 rotatably mounted on the mounting seat 14 and capable of driving the sliding seat 21, and a rotating seat 22 for rotating the rotating base 22 A limiting ring 23 located in the mounting seat 14 and a rotary knob 24 rotatably mounted to the annular portion 132 of the outer casing 13 and extending into the rotating hole 131 to drive the rotating base 22 to rotate synchronously.

The sliding seat 21 has a first ring portion 211 having a hollow cylindrical shape, a first threaded portion 212 disposed on an inner wall surface of the first ring portion 211, and three strips respectively protruding from the outer wall surface of the first ring portion 211. And axially movably slidingly embedded in the rail portion 213 of each of the rail grooves 142, and one of the rail portions 213 disposed on the rail portion 213 facing the mounting seat 14 and correspondingly limiting The restricted portion 214 of the portion 143. The rail portion 213 is embedded in the rail groove 142, so that the sliding seat 21 can be restricted from being axially movable relative to the mounting seat 14 and cannot be rotated. Further, when the restricted portion 214 can correspond to the design of the limiting portion 143, the sliding portion 21 is moved downward to a lowest position (see FIG. 4), and the restricted portion 214 is buckled. The limiting portion 143 can be used to define a range in which the sliding seat 21 moves downward, and can prevent the sliding seat 21 from coming off the mounting seat 14. Of course, the number of the rails 213 may increase or decrease with the number of the rails 142, and the number of the restricted portions 214 may also correspond to the number of the limiting portions 143. limit.

The rotating base 22 has a hollow shoulder portion 221 rotatably disposed on the top edge of the mounting seat 14, and a first ring portion 211 extending downwardly from the inner periphery of the shoulder portion 221 into the sliding seat 21. The second ring portion 222 is disposed on the outer wall surface of the second ring portion 222 and is screwed to the sliding portion. The second threaded portion 223 of the first threaded portion 212 of the seat 21 and the plurality of first engaging portions 224 that are disposed at an angular interval from each other on the inner wall surface of the second ring portion 222. By the screwing design between the second threaded portion 223 and the first threaded portion 212, when the rotating base 22 is driven to rotate, the sliding seat 21 will be engaged to move the upper and lower shafts relative to the mounting seat 14 Move to. Each of the first cam portions 224 of the embodiment is a groove.

The limiting ring 23 is an annular cover body, and the cover is placed on the top side of the shoulder portion 221 of the rotating base 22, and is screwed on the top of the mounting seat 14, and can be used to limit the rotating seat 22 and Prevent it from coming off the mount 14.

The rotary knob 24 further has a rotating head 241 rotatably mounted to the ring mouth portion 132 for the user to rotate, a protruding portion protruding from the periphery of the rotating head portion 241 and elastically engaging the card slot 134. a pawl portion 242 of one of the card slots 134, a shaft portion 243 extending downward from the center of the rotating head portion 241 and entering the second ring portion 222 from the rotating hole 131, and a plurality of angularly spaced apart portions A second insertion portion 244 is formed around the rotation shaft portion 243 and is respectively engaged with each of the first insertion portions 224. The pawl portion 242 is a flexible hook that can be elastically engaged in the slot 134 to position the rotating head 241 after rotation. Of course, the number of the pawl portions 242 can also be increased. This embodiment is limited. Each of the second engaging portions 244 of the embodiment is a piece of the radially protruding protrusion. The second engaging portion 244 is inserted into the first engaging portion 224, so that the second engaging portion 244 can be inserted into the first engaging portion 224. The rotating button 24 synchronously drives the rotating base 22 to rotate. Of course, in practice, the first engaging portion 224 and the second engaging portion 244 can be interchanged or changed. The rotary knob 24 and the rotating base 22 can also be connected in the same body, so the manner of bonding is not limited thereto.

The mowing device 3 includes a motor 31 mounted in the first ring portion 211 of the sliding seat 21 and moving along with the sliding seat 21, one under the sliding seat 21 and the frame 11 and driven by the motor 31. The rotating blade holder 32 and a cover 33 attached to the bottom of the sliding seat 21 and partially blocking the periphery of the blade holder 32. The holder 32 has a horizontally rotating dial portion 321 and four mowing members 322 respectively attached to the periphery of the dial portion 321 . The mowing members 322 of the embodiment are all metal blades, and of course, may be flexible objects such as plastic blades or nylon ropes, and the number of the mowing members 322 may also be increased or decreased, and is not limited to the implementation. example. However, since the structure of the mowing device 3 is a general technique, it will not be described in detail.

When mowing the grass, if the motor 31 of the mowing device 3 is activated, the knife holder 32 is driven to rotate at a high speed, and the wheel 12 of the body device 1 is rolled, the mowing member 322 can be used to The upper portion of the grass on the grass that is raised above the seat 32 is cut so that the grass on the grass is cut and trimmed to a lower level than the seat 32.

When the length of the mowing grass is to be adjusted, only the rotating head portion 241 of the rotating button 24 needs to be rotated, that is, the rotating seat 22 can be synchronously driven to rotate, and the sliding sliding seat 21 is moved axially up and down relative to the mounting seat 14 . In order to move the mowing device 3 up and down, the height of the blade holder 32 is adjusted, as shown in FIG. 3, the height of the blade holder 32 is adjusted to be large, and the grass can be cut and trimmed, and the figure is as shown in the figure. 4 is an adjustment to make the height of the blade holder 32 smaller than the ground, and can be cut and trimmed to a shorter grass. It is worth mentioning that the user is turning When the head portion 241 of the rotary knob 24 is rotated, the pawl portion 242 is interlocked to force it to pass over the adjacent convex tooth portion 133. When the rotary head portion 241 is not rotated by the user, the pawl portion 242 is The card slot is positioned at the card slot 134 where the card is located to ensure that the rotary button 24 and the rotating seat 22 cannot rotate by themselves, and the sliding seat 21 does not slide, thereby preventing the lawn mower from vibrating when it is started. As a result, the rotary knob 24 and the rotating base 22 are loosely rotated, and the sliding seat 21 is caused to slide down to change the height of the seat 32, so that the mowing height during use can be stable and consistent.

In summary, the lawn mower of the present invention is provided between the body device 1 and the mowing device 3, and the lifting device 2 can be used to drive the mowing device 3 up and down to move up and down. The height of the blade holder 32 can be adjusted according to the length of the desired mowing, so as to meet various mowing requirements, and the utility model has better usability, so the purpose of the novel can be achieved.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

1‧‧‧ body device

11‧‧‧Rack

13‧‧‧Shell

131‧‧‧Transforation

132‧‧‧ Ring Office

133‧‧‧ convex tooth

134‧‧‧ card slot

14‧‧‧ Mounting

141‧‧

142‧‧ ‧ rail slot

143‧‧‧Limited

2‧‧‧ lifting device

21‧‧‧Sliding seat

211‧‧‧ First Ring

212‧‧‧First threaded part

213‧‧‧Roads

214‧‧‧Restricted Department

22‧‧‧ Rotating seat

221‧‧‧ Shoulder

222‧‧‧ Second Ring

223‧‧‧Second thread

224‧‧‧The first embedded card department

23‧‧‧ Limit ring

24‧‧‧ Rotary button

241‧‧‧ Turning the head

242‧‧‧ pawl

243‧‧‧ shaft part

244‧‧‧Second embedded card department

3‧‧‧Mow cutting device

31‧‧‧Motor

32‧‧‧Tool holder

321‧‧‧ Turntable Department

322‧‧‧grass

33‧‧‧ Cover

Claims (9)

A lawn mower comprising: a body device comprising a frame, a plurality of wheels respectively rotatably mounted to the frame, and a mounting seat disposed on the frame and extending upwardly, the mounting The seat defines a guide groove that communicates with the upper and lower sides; a lifting device is mounted on the body device and includes a sliding seat axially movable and non-rotatably mounted in the guide groove of the mounting seat, and a sliding seat a rotating seat rotatably mounted on the mounting seat and capable of driving the sliding seat, the sliding seat having a first threaded portion, the rotating seat having a second threaded portion screwed to the first threaded portion of the sliding seat, When the rotating base is driven to rotate, the sliding seat is driven to move up and down relative to the mounting seat; and a mowing device is mounted on the lifting device, and includes a sliding seat mounted thereon and sliding along the sliding seat The movable motor and a seat located under the frame and driven by the motor, the mowing device can be lifted and lowered by the lifting device to adjust the height from the ground. The lawn mower according to claim 1, wherein the body device further comprises a casing covering the top of the frame, the casing having a ring mouth portion corresponding to the mounting seat, the ring mouth portion defining A rotating hole communicating with the guiding groove is provided, and the lifting device further comprises a rotary button rotatably mounted on the annular portion of the outer casing and extending into the rotating hole to drive the rotating seat to rotate synchronously. The lawn mower of claim 2, wherein the outer casing further has a plurality of The angle is spaced around the convex tooth portion formed around the ring mouth portion, a card slot is defined between each two adjacent convex tooth portions, and the rotary button has a rotating head rotatably mounted to the ring mouth portion And a pawl portion protruding from a periphery of the rotating head and having an elastic card embedded in one of the slots of the card slot. When the rotating head of the rotating button is not rotated, the pawl portion is stuck掣 Position in the card slot. The lawn mower according to claim 3, wherein the rotating base further has a plurality of first engaging portions spaced apart from each other, and the rotating button further has a downwardly extending portion of the rotating head into the rotating hole. a rotating shaft portion, and a plurality of second engaging portions respectively disposed around the rotating shaft portion and respectively embedded in the respective first engaging portions, wherein the second engaging portions are embedded in the second engaging portion The first engaging portion enables the rotating button to synchronously drive the rotating seat to rotate. The lawn mower according to claim 1, wherein the mount has a rail groove extending axially and communicating with the guide groove, and the slide base further has a rail axially movably slidingly embedded in the rail groove The strip portion, by which the rail portion is embedded in the rail groove, can be used to restrict the sliding seat from being axially movable relative to the mounting seat and unable to rotate. The lawn mower according to claim 5, wherein the mount further has a limiting portion facing the sliding seat, and the sliding seat further has a restricted portion facing the mounting seat and corresponding to the limiting portion, When the sliding seat is moved down to a lowest position, the restricted portion is engaged with the limiting portion so that the sliding seat cannot be separated from the mounting seat. The lawn mower according to claim 1, wherein the sliding seat further has a hollow first ring portion, and the first thread portion is disposed on an inner wall of the first ring portion The rotating seat further has a hollow shoulder portion rotatably disposed on the top edge of the mounting seat, and a second ring extending downward from the shoulder portion and entering the first ring portion of the sliding seat The second threaded portion is wound around the outer wall surface of the second ring portion. The lawn mower according to claim 1, wherein the blade holder of the mowing device has a turntable portion and at least one mowing member attached to the turntable portion. The lawn mower of claim 1, wherein the mowing device further comprises a cover mounted to the sliding seat and partially obscuring the periphery of the holder.