CN201345836Y - Garden tool - Google Patents

Abstract

The garden tool disclosed by the utility model includes a host and at least one replaceable tool carrier, wherein a motor and a transmission mechanism are installed in the host, the tool carrier includes a base and a tool assembly, the tool carrier can be installed on the host through the base, and the tool assembly At least one movable tool is included, the at least one movable tool has a bending portion. Such a structural design makes it unnecessary for the garden tool to align the transmission mechanism on the main machine with the tool on the tool carrier when changing the tool. The user only needs to install the tool carrier on the main machine and start the motor. Driven by it, it will automatically enter the aligned state from the unaligned state.

Description

garden tools

technical field

The utility model relates to a garden tool, in particular to a garden tool with replaceable knives.

Background technique

There are many types of garden tools, which can be divided into lawnmowers, bush trimmers, pruners and so on according to their different uses. In order to meet the needs of users and save the expenses of users, there is a garden tool with replaceable cutters in the prior art. Such garden tools consist of a main unit and several different tool carriers. Different knives are housed on each knife carrier, for example: short knives for mowing grass, long knives for cutting shrubs, etc. Each knife carrier can be mounted to the main unit to form a unique garden tool.

By assembling the above-mentioned garden tool with different tool carriers, the garden tool has various functions. Therefore, users only need to purchase one machine to trim different plants. However, there is a problem in this garden tool, that is, when the tool carrier is installed, it is difficult to align the driving device on the main machine with the knives on the tool carrier. In the prior art, the user usually needs to first rotate the drive shaft of the drive device to a specific position, and then move the tool to the installation position, so that the drive device and the tool can be aligned and installed. This alignment process is cumbersome and time-consuming.

Utility model content

In order to overcome the deficiencies and defects in the prior art, the utility model provides an improved garden tool, which has an automatic alignment device, which is very convenient when changing knives.

The garden tool disclosed by the utility model includes a host and at least one replaceable tool carrier, wherein a motor and a transmission mechanism are installed in the host, the tool carrier includes a base and a tool assembly, the tool carrier can be installed on the host through the base, and the transmission mechanism Contains an eccentric device, the eccentric device can engage with the installation part of the cutter assembly, the cutter assembly includes at least one movable cutter, the installation part of the at least one movable cutter is a bending part, the installation part and the cutting part of the cutter are not in the same plane .

Preferably, the cutter assembly is made of elastic material.

Further, the cutter assembly includes a pair of cutters, at least one of which is a movable cutter with a bent portion, and the other cutter is a straight cutter.

Further, the bent portion of the movable knife has a hole.

Further, the transmission mechanism in the main engine of the garden tool includes an eccentric device, and the eccentric device is matched with the hole of the bent part.

Further, the base of the cutter carrier has a plurality of engaging parts, and the main machine has a plurality of engaging grooves, and the cutter carrier is installed on the main machine through the cooperation of the engaging parts and the engaging grooves.

The design of the bending part makes the tool have a certain degree of elasticity in the vertical direction. When the bending part is under pressure, it can be displaced downward. When the pressure is removed, the bending part can be automatically elastic and return to its original shape. Such a structural design makes it unnecessary for the garden tool to align the transmission mechanism on the main machine with the tool on the tool carrier when changing the tool. The user only needs to install the tool carrier on the main machine and start the motor. Driven by it, it will automatically enter the aligned state from the unaligned state.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of a replaceable tool carrier.

Fig. 3 is a schematic diagram of a part of the internal structure of the garden tool shown in Fig. 1 .

Fig. 4 is a perspective view of the upper blade in Fig. 1 .

Fig. 5 is a top view of the cutter carrier in Fig. 1 .

Fig. 6 is a sectional view along the direction A-A in Fig. 5 .

Fig. 7 is a cross-sectional view along the direction B-B in Fig. 6 .

specific implementation plan

As shown in FIG. 1 , the garden tool 100 disclosed in the present invention can be used for mowing grass, shrubs and other plants. The garden tool 100 includes a host 1, and the host 1 can be connected with different tool carriers to realize different functions. As shown in Fig. 1 and Fig. 2, the long cutter carrier 2 for pruning shrubs and the short cutter carrier 3 for mowing grass are enumerated in this embodiment. Each cutter carrier includes a base 4 and a cutter. The cutter carrier 2 for pruning shrubs has a pair of longer blades 20 that move back and forth linearly, and the cutter carrier 3 for mowing grass has a pair of shorter blades that swing left and right. 30.

As shown in FIG. 3 , the main engine 1 of the garden tool 100 is equipped with a motor 10 , and a reduction mechanism is connected to the output end of the motor 10 for reducing the speed of the motor 10 . The reduction mechanism is a gear transmission mechanism, which includes four gears 12, 13, 14, 15. Wherein, the gear 12 is installed on the output shaft of the motor 10 , the gears 13 and 14 are installed on the shaft 16 , and the gear 15 is installed on the shaft 11 . The gear 12 is meshed with the gear 13, and the gear 14 is meshed with the gear 15. The free ends of the shafts 16, 11 are conical, and the two are parallel to each other and separated by a certain distance in the longitudinal direction. These two shafts 16, 11 all protrude from the main machine 1 and are connected with the cutter carrier. An eccentric device is fixedly connected to the lower surface of the gear 15, and the eccentric device includes a large eccentric wheel 17 and a small eccentric wheel 18, and the two eccentric wheels are integrated.

The structure of the automatic knife setting of the garden tool 100 will be described below by taking the tool carrier 2 for pruning shrubs as an example. In FIG. 1 , the host 1 of the garden tool 100 is connected to the cutter carrier 2 for pruning shrubs, and the garden tool 100 at this time can be used as a shrub pruning machine. As shown in Fig. 1 and Fig. 5, there are two longitudinally arranged holes 21, 22 on the tool carrier 2, the spacing between these two holes is equal to the spacing between the shaft 16 and the shaft 11, and the shafts 16, 11 can be respectively Insert into holes 21,22. The blade 20 of the tool carrier 2 consists of an upper blade 201 and a lower blade 202 . Wherein, upper blade 201 is a bending blade, as shown in Figure 4, the installation part of this blade 201 bends upwards, forms a bending part 205, and this bending part 205 is roughly parallel with the cutting part 206 of blade 201, two or not in the same plane; the lower blade 202 is a flat blade. Preferably, the upper and lower blades 201, 202 are made of spring steel with certain elasticity. In this embodiment, the upper and lower blades 201, 202 perform linear reciprocating motions in opposite phases. In other embodiments, the pair of blades may also consist of a movable blade and a stationary blade. The mounting parts of the upper and lower blades 201, 202 have a large oval hole 203 and a small oval hole 204 respectively, and the short radii of these two oval holes are equal to the radii of the large and small eccentric wheels 17, 18 on the shaft 11 respectively, so The large and small oval holes 203, 204 can cooperate with the large and small eccentric wheels 17, 18 respectively. The holes 22 are located in the large and small oval holes 203 , 204 . The upper and lower blades 201, 202 are installed on the support plate 5 of the base 4 through bolts. The support plate 5 is fixedly connected with the base 4. As shown in FIGS. 6 and 7, the support plate 5 includes a groove 50 whose size is larger than the mounting portion of the lower blade 202, so the mounting portion of the lower blade 202 is suspended. The upper blade 201 is located above the lower blade 202, and its bent portion 205 is also in a suspended state. Since both the upper and lower blades 201 and 202 have a certain degree of elasticity, they have a degree of freedom of movement in the vertical direction and can be displaced downward.

The base 4 of the tool carrier 2 also includes a rear engaging piece 41 and left and right engaging pieces 42 , 43 . There is a button 6 on the host 1 . Through the button 6 , the user can manipulate the hook 7 connected to it to rotate to engage with or separate from the slot 44 on the base 4 . When installing the tool carrier 2, firstly insert the rear engaging piece 41 into the hole 19 on the host machine 1, then align the shafts 16, 11 into the holes 21, 22, press the button 6 at this time, so that the hook 7 is turned out Position, then close the tool carrier 2 and the host 1, so that the left and right engaging pieces 42, 43 engage with the left and right grooves 72, 73 on the host 1, and finally release the button 6, and the hook 7 turns into the groove 44, so the tool carrier 2 is installed on host 1. In this state, the large and small eccentrics 17, 18 are not necessarily located in the large and small oval holes 203, 204, and may press on the edges of the oval holes, so that the mounting parts of the upper and lower blades 201, 202 move downward. Now, start the motor 10, and the motor 10 drives the large and small eccentric wheels 17, 18 to rotate through the reduction mechanism. , 204, with the oval hole to achieve automatic alignment. Simultaneously, the upper and lower blades 201, 202 spring upward due to the absence of the pressure of the eccentric wheels 17, 18, and restore the original state. Then, the blade 20 is driven by the eccentrics 17, 18 to reciprocate linearly in antiphase, thereby implementing trimming.

As shown in FIG. 2 , taking the cutter carrier 3 for mowing grass as an example, the blade 30 is composed of a movable blade 301 and a stationary blade 302 , and the movable blade 301 can swing left and right relative to the stationary blade 302 . Wherein, the stationary blade 302 is fixedly installed on the base 4; the movable blade 301 is a bending blade, and its bending part 305 can move in the vertical direction. The mounting part of movable blade 301 has an oval hole 303, which can cooperate with the large eccentric wheel 17 on the main frame 1. When the garden tool 100 needs to be used as a lawnmower, the user can press the button 6 to remove the cutter carrier 2 for pruning shrubs and replace it with the cutter carrier 3 for mowing grass. The assembly process of the tool carrier 3 is the same as that of the tool carrier 2 above. First, insert the rear engaging piece 41 into the groove 19 of the main body 1, then align the shafts 16, 11 into the insertion holes 21, 22 respectively, and close the tool carrier 3. Then, the tool carrier 3 is mounted on the main machine 1 . In this assembled state, the eccentric 17 is likely to press on the edge of the oval hole 303 without being aligned so that the bent portion 305 of the movable blade 301 is displaced downward. At this time, start the motor 10, the eccentric wheel 17 rotates with the shaft 11, and when it reaches the short radius of the oval hole 303, it falls into the oval hole 303 to realize automatic alignment, and the bending part of the movable blade 301 305 bounces upward due to the departure of the eccentric wheel 17, returns to the original state, and then moves under the drive of the eccentric wheel 17. For this tool carrier with only one movable blade, when installing with the host machine 1 and automatically setting the tool, the small eccentric wheel 18 on the shaft 11 is in an idle state.

Those of ordinary skill in the art should easily imagine that the tool carrier with other tools can also be installed on the main machine, so that the garden tool can be used more widely. As long as the tool includes at least one bent blade, the automatic tool setting function can be realized, which provides convenience for users to change tools.

The garden tool disclosed by the utility model is not limited to the content described above and the structure shown in the accompanying drawings. For example, the material of the cutter is not limited to spring steel, and other suitable materials with certain elasticity can also be used; the installation structure between the cutter carrier and the host; the number of eccentric wheels, when the cutter on the cutter carrier has only one movable When the blade is used, only one eccentric wheel is needed to realize automatic knife setting. In a word, any obvious changes, substitutions or modifications to the shapes and positions of other components on the basis of the present utility model are within the scope of the present utility model.

Claims (7)

1. garden tool, comprise main frame, at least one removable blade carrier, wherein, motor and transmission mechanism are installed in the described main frame, described blade carrier comprises base and toolbox, blade carrier can be installed on the described main frame by base, described transmission mechanism comprises an eccentric, eccentric can be meshed with the mounting portion of toolbox, it is characterized in that, described toolbox comprises at least one movable cutter, and the mounting portion of described at least one movable cutter is a dogleg section, and the cutting part of described mounting portion and cutter is not in same plane.

2. garden tool as claimed in claim 1 is characterized in that, described toolbox adopts elastomeric material to make.

3. garden tool as claimed in claim 1 or 2 is characterized in that described toolbox comprises a pair of cutter, and one of them cutter is a movable cutter, and described movable cutter has dogleg section, and another cutter is a straight cutter.

4. garden tool as claimed in claim 3 is characterized in that the dogleg section of described movable cutter has the hole.

5. garden tool as claimed in claim 4 is characterized in that, the transmission mechanism in the described main frame comprises an eccentric, and described eccentric matches with the hole of described dogleg section.

6. garden tool as claimed in claim 1 is characterized in that, has a plurality of fasteners on the base of described blade carrier, and described main frame has a plurality of engaging grooves, and by cooperating of fastener and engaging groove, described blade carrier is installed on the main frame.

7. garden tool as claimed in claim 6, it is characterized in that described main frame has extended two axles, have two holes of vertically arranging on the described blade carrier, distance between the described diaxon is relative with the distance between two holes, and diaxon can insert respectively in two holes.

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