CN110786167A

CN110786167A - Garden tool

Info

Publication number: CN110786167A
Application number: CN201810864375.0A
Authority: CN
Inventors: 林水杉
Original assignee: Chevron HK Ltd
Current assignee: Chevron HK Ltd
Priority date: 2018-08-01
Filing date: 2018-08-01
Publication date: 2020-02-14
Anticipated expiration: 2038-08-01
Also published as: CN110786167B

Abstract

The invention discloses a garden tool which comprises a shell, a chain, a guide plate, an oil pot and an oil pump, wherein the shell is provided with a mounting groove, the guide plate is at least partially accommodated in the shell and is provided with an oil inlet, the chain is supported by the guide plate and rotates around the guide plate, the oil pot is provided with a bulge part, the bulge part is provided with an oil outlet, the bulge part is arranged in the mounting groove, and the oil outlet is jointed and communicated with the oil inlet; the oil pump is used for pumping the lubricating oil in the oil can out of the oil outlet. According to the garden tool provided by the invention, the protruding part of the oil can is directly contacted with the guide plate and supplies oil to the guide plate, so that the oil leakage problem caused by the fact that the oil can is externally connected with an oil pipe is avoided; in addition, because the oil can is not externally connected with the oil pipe, the oil can and the oil pump can be taken out as a whole quickly, and the maintenance of the oil can and the oil pump is convenient.

Description

Garden tool

Technical Field

The invention relates to a garden tool.

Background

Garden tools typically include a power unit, a gearbox and a rotating element. The rotating element is driven by the power device to do reciprocating rotation motion. For example, a chain saw is a gardening tool used in the fields of lumbering, timber manufacturing and the like, has the advantages of convenience in carrying, simplicity in operation and the like, but is complex in maintenance and repair and needs to be lubricated. A chain saw generally includes a housing, a guide plate provided on the housing, a chain provided on the guide plate, and a motor, an oil can, an oil pump, and a circuit board accommodated in the housing. The chain is driven by the motor to rotate around the guide plate to cut the target, and the oil pump can pump lubricating oil in the oil can to the chain.

However, current chain saws generally require that an oil tube connected to an oil outlet of an oil can be extended into the chain to lubricate the chain. This arrangement has the following disadvantages: after abrasion and aging are generated after long-time use, the sealing performance of the joint of the oil pipe and the oil can is deteriorated, and oil leakage is easy to occur.

Disclosure of Invention

The invention aims to provide a garden tool with low possibility of oil leakage.

In order to achieve the purpose, the invention adopts the following technical scheme:

a garden tool, comprising:

a housing provided with a mounting groove;

a deflector plate at least partially received in the housing and having an oil inlet;

a chain supported by and rotating around the guide plate;

the oil can is provided with a protruding part, an oil outlet is formed in the protruding part, the protruding part is arranged in the mounting groove, and the oil outlet is in fit communication with the oil inlet; and

and the oil pump is arranged in the oil can and used for pumping the lubricating oil in the oil can out of the oil outlet.

Further, an oil passage is arranged in the guide plate and is communicated with the oil inlet and an outlet on the periphery of the guide plate.

Further, the side wall of the protruding portion is recessed inwards to form a groove, the oil outlet is formed in the groove bottom and/or the groove wall of the groove, the oil inlet is attached to and communicated with the opening of the groove, and the oil inlet is not opposite to the oil outlet.

Further, the garden tool further comprises an oil pipe and a limiting part which is integrally formed with one end of the oil pipe, the limiting part is matched in the groove, and the other end of the oil pipe is connected with an oil pumping port of the oil pump.

Furthermore, the limiting part is groove-shaped, and the external profile of the limiting part is matched with the internal profile of the groove.

Further, the garden tool further comprises an oil pipe connected with an oil pump port of the oil pump, and the oil pipe penetrates through the oil outlet.

Further, the oil inlet is opposite to the oil outlet.

Further, the oil pot is detachably connected with the shell.

Further, a shielding piece used for shielding the oil inlet is arranged on the outer side of the guide plate.

Further, the garden tool is a chainsaw.

The invention has the following beneficial effects:

according to the garden tool provided by the invention, when the chain rotates, negative pressure can be formed around the chain, and lubricating oil from the oil outlet can sequentially move to the oil inlet and the chain under the action of the negative pressure, so that the chain saw provided by the specific embodiment can only discharge oil when the chain saw works; meanwhile, the bulge part is tightly attached to the guide plate, and the bulge part is directly contacted with the guide plate and supplies oil to the guide plate, so that the oil leakage problem caused by the fact that the oil can is externally connected with an oil pipe is avoided; in addition, because the oil can is not externally connected with the oil pipe, the oil can and the oil pump can be taken out as a whole quickly, and the maintenance of the oil can and the oil pump is convenient.

Drawings

FIG. 1 is an isometric view of a chain saw provided in accordance with an embodiment of the present invention;

FIG. 2 is a front view of a chain saw provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of a chain saw with portions of the housing and portions of the oilcan removed in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a chain saw provided in accordance with an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a partial enlarged view at B in FIG. 4;

fig. 7 is a schematic structural view of the oil can and the limiting member according to the embodiment of the present invention after being assembled;

FIG. 8 is a schematic structural view of an oil can according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an oil pipe with a limiting member at one end according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an oil pipe without a limiting element at one end according to an embodiment of the present invention.

In the figure:

1. a housing; 2. a chain; 3. a guide plate; 4. an oil can; 5. an oil pump; 6. an oil pipe; 7. a limiting member;

11. mounting grooves;

31. an oil inlet; 32. a chain groove;

41. a boss portion; 42. a groove; 411. an oil outlet;

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The present embodiment provides a garden tool, which is preferably but not limited to a chain saw, and may be a garden tool such as a soil turning tool that needs to lubricate a chain. The present embodiment will be described by taking a chain saw as an example.

As shown in fig. 1 to 3, the present embodiment provides a chain saw including a housing 1, a chain 2, a guide plate 3, an oil can 4, and an oil pump 5, wherein the guide plate 3 is at least partially accommodated in the housing 1, and the chain 2 is supported by the guide plate 3 and can rotate around the guide plate 3 by a power device such as a motor. The oil can 4 is used for storing lubricating oil and is provided with an oil outlet 411; the oil pump 5 is arranged in the oil can 4, and the oil pump 5 is used for sending the lubricating oil pump 5 in the oil can 4 out of the oil outlet 411.

In order to avoid the problem of oil leakage at the interface of the oil pipe outside the oil can 4, in this embodiment, please refer to fig. 4 and 5, a mounting groove 11 is provided on the housing 1, a protruding portion 41 is provided on the oil can 4, the protruding portion 41 and the oil can 4 are preferably but not limited to be an integrally formed structure, an oil inlet 31 is provided on the guide plate 3, the protruding portion 41 is disposed in the mounting groove 11, and the oil outlet 411 is attached and communicated with the oil inlet 31. The oil can 4 and the housing 1 may be directly clamped by the protruding portion 41 and the mounting groove 11, or may be connected by a fastening member such as a screw.

When the chain 2 rotates, a negative pressure is formed around the chain 2, and the lubricating oil from the oil outlet 411 can move to the oil inlet 31 and the chain 2 in sequence under the action of the negative pressure, so that the chain saw provided by the embodiment can discharge oil only when the chain saw works; meanwhile, the bulge part 41 is directly contacted with the guide plate 3 and supplies oil to the guide plate 3, so that the oil leakage problem caused by the external connection of the oil can 4 and the oil pipe 6 is avoided; in addition, as the oil can 4 is not connected with the oil pipe 6, the oil can 4 and the oil pump 5 can be taken out as a whole quickly, and the maintenance of the oil can 4 and the oil pump 5 is convenient.

The oil outlet 411 may be opposed to the oil inlet 31. And the oil outlet 411 and the oil inlet 31 are preferably directly attached at this time. Wherein, relatively means that at least part of the oil outlet 411 corresponds to at least part of the oil inlet 31. When the oil outlet 411 and the oil inlet 31 are opposite, the axes of the oil outlet 411 and the oil inlet 31 are preferably but not limited to be collinear, or the axes of the oil outlet 411 and the oil inlet 31 are slightly staggered and parallel, so that the oil outlet 411 and the oil inlet 31 can be directly communicated, and the oil inlet 31 and the oil outlet 411 can be attached and communicated. However, the arrangement mode of the oil inlet 31 and the oil outlet 411 being opposite to each other may cause a problem that the oil inlet 31 and the oil outlet 411 are blocked by debris such as wood chips generated during operation of the chain saw. In order to avoid this problem, in this embodiment, the oil outlet 411 and the oil inlet 31 are in close communication in the following manner: as shown in fig. 5, 7 and 8, the side wall of the protruding portion 41 is recessed inward to form a groove 42, the oil outlet 411 is disposed on the bottom of the groove 42, the portion of the guide plate 3 provided with the oil inlet 31 is blocked outside the groove 42, the oil inlet 31 is in close communication with the opening of the groove 42, and the oil inlet 31 and the oil outlet 411 are staggered rather than oppositely disposed. The grooves 42 are preferably, but not limited to, rectangular, long strips. The groove 42 is preferably, but not limited to, arranged in a horizontal direction. The groove 42 has a buffering effect on the sundries such as the chips splashed out when the chain saw works, so that the oil inlet 31 and the oil outlet 411 are prevented from being blocked by the sundries such as the chips. It should be noted that the communication manner between the oil outlet 411 and the oil inlet 31 is not limited to the above, and in other embodiments, the oil outlet 411 may be disposed on a groove wall of the groove 42. Alternatively, in another embodiment, the groove 42 may be provided on the guide plate 3, and the oil inlet 31 may be provided on a groove wall and/or a groove bottom of the groove 42.

In order to prevent debris such as wood chips from blocking the oil inlet 31 and the oil outlet 411, a shielding member (not shown in the figure) for shielding the oil inlet 31 may be provided on the outer side of the guide plate 3. The shielding piece can be of an integral structure with the guide plate 3 or of a detachable and connected split structure, so that when the chain saw works, sundries such as wood chips and the like can be prevented from entering the oil inlet 31.

As shown in fig. 6, the guide plate 3 is generally provided at its outer periphery with a chain groove 32 for accommodating the chain 2. In the present embodiment, an oil passage (not shown in the drawings) is provided in the guide plate 3, and the oil passage communicates the oil inlet 31 and the outlet on the periphery of the guide plate 3, that is, the oil passage communicates the oil inlet 31 and the chain groove 32, and the lubricating oil flowing out of the oil outlet 411 can accurately enter the chain groove 32 through the oil passage to lubricate the chain 2. The number and specific positions of the oil passages are not limited, and for example, one or more than one oil passage may be provided; the oil passage may be located between the oil outlet 411 and the top of the guide plate 3 or at other positions; it is also possible to provide the entire guide plate 3 as a hollow structure. In other embodiments, the oil passage may not be provided, and after the lubricating oil flows out from the oil outlet 411, the lubricating oil may drip along the outer side wall of the guide plate 3 onto the chain 2 below the guide plate to lubricate the chain 2. However, compared with the oil supply method of the oil passage, the oil supply method has poor controllability.

An oil pipe 6 connected to a pump port of the oil pump 5 is usually provided in the oil can 4, and the lubricating oil in the oil can 4 is supplied to the oil outlet 411 through the oil pipe 6. In the present embodiment, as shown in fig. 7 and 9, a limiting member 7 integrally formed with one end of the oil pipe 6 is disposed at one end of the oil pipe 6 away from the oil pump 5, and the limiting member 7 is fitted in the groove 42 to prevent the oil pipe 6 from falling into the oil can 4. The shape and structure of the stopper 7 are not limited, and in order to improve the mounting stability, the stopper 7 is preferably groove-shaped, and the outer contour of the stopper 7 matches the inner contour of the groove 42. The limiting member 7 is preferably, but not limited to, made of a rubber material. Understandably, in the present embodiment, as shown in fig. 10, the limiting member 7 may not be provided, and an installation manner in which one end of the oil pipe 6 away from the oil pump 5 directly penetrates through the oil outlet 411 may be adopted.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. A garden tool, comprising:

a housing provided with a mounting groove;

a chain supported by and rotating around the guide plate;

the oil can is provided with a protruding part, an oil outlet is formed in the protruding part, the protruding part is arranged in the mounting groove, and the oil outlet is in fit communication with the oil inlet;

2. The garden tool of claim 1, wherein an oil passage is provided in the guide plate, the oil passage communicating the oil inlet and an outlet on the periphery of the guide plate.

3. The garden tool of claim 1, wherein the side wall of the protrusion is recessed inward to form a groove, the oil outlet is disposed on the bottom and/or wall of the groove, the oil inlet is in fit communication with the opening of the groove, and the oil inlet is not opposite to the oil outlet.

4. The garden tool of claim 3, further comprising an oil pipe and a stopper integrally formed with one end of the oil pipe, wherein the stopper is fitted in the groove, and the other end of the oil pipe is connected to a pump port of the oil pump.

5. The garden tool of claim 4, wherein the retaining member is slot-shaped, and an outer profile of the retaining member matches an inner profile of the groove.

6. The garden tool of claim 3, further comprising an oil tube connected to a pump oil port of the oil pump, the oil tube passing through the oil outlet.

7. The garden tool of claim 1, wherein the oil inlet is opposite the oil outlet.

8. The garden tool of any one of claims 1 to 7, wherein the oil can is removably connected to the housing.

9. The garden tool of any one of claims 1 to 7, wherein a shield for shielding the oil inlet is provided to an outer side of the guide plate.

10. The garden tool of any one of claims 1 to 7, wherein the garden tool is a chainsaw.