CN215927606U - Filtering device and hedge trimmer - Google Patents

Abstract

The application discloses a filtering device and a hedge trimmer, which belong to the field of design of garden tools, wherein the filtering device comprises an air filter seat, a first filtering mechanism, a second filtering mechanism, an anti-reverse spray plate and an air filter cover; the air filter base comprises a first cavity and a second cavity; the first filtering mechanism is arranged in the first cavity; the second filtering mechanism is arranged in the second cavity; the anti-backflow plate is arranged in the second cavity and is arranged between the second filtering mechanism and the bottom wall of the air filter seat; the air filter covers the air filter base. This application filters the air that gets into the engine through filter equipment, avoids the hedge trimmer to inhale the engine with dust and the piece in its surrounding environment in the use, has improved the life of hedge trimmer.

Description

Filtering device and hedge trimmer

Technical Field

The application relates to a garden instrument field particularly, relates to a filter equipment and hedge trimmer.

Background

The hedge trimmer is also called hedge shears, and is suitable for tea trimming, garden trimming, roadside hedge trimming and other special trimming in garden greening.

During operation of the traditional hedge trimmer, a large amount of dust and green plant debris can be lifted in the air around the hedge trimmer, and part of the dust and the debris can be sucked by an air inlet system of the hedge trimmer, so that the hedge trimmer generates unnecessary wear and reduces the service life of the hedge trimmer; the phenomenon of overheating easily appears when traditional hedge trimmer used, does not stop to use hedge trimmer to dispel the heat and can lead to hedge trimmer to appear card sword, automatic flame-out, fault such as unable ignition, can not reach long-time continuous operation's demand.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a filtering device and a hedge trimmer, which can solve the problem that the service life of an engine is shortened because dust and debris in partial surrounding environment are sucked into the engine in the using process of the existing hedge trimmer; when the hedge trimmer is continuously used, the problems that the hedge trimmer is blocked, automatically flamed out, incapable of igniting and the like can be caused due to untimely heat dissipation, and long-time continuous operation can not be achieved.

The embodiment of the application is realized as follows:

the embodiment of the application provides a filtering device, which comprises an air filter seat, a first filtering mechanism, a second filtering mechanism, an anti-reverse spray plate and an air filter cover; wherein the air filter base comprises a first cavity and a second cavity; the first filtering mechanism is arranged in the first cavity; the second filtering mechanism is arranged in the second cavity; the anti-reverse-flow plate is arranged in the second cavity and is arranged between the second filtering mechanism and the bottom wall of the second cavity; the air filter covers the air filter base.

In one embodiment, the air filter holder comprises a first air inlet and a first air outlet, the first air inlet is arranged on the bottom wall of the first cavity, and the first air outlet is arranged on the bottom wall of the second cavity.

In an embodiment, the filtering device further includes an air door baffle and an air door handle, the second cavity bottom wall is further provided with a first connection hole, the air door baffle is disposed on the inner side of the second cavity bottom wall, the air door handle is disposed on the outer side of the second cavity bottom wall, the air door handle is connected with the air door baffle through a first screw, and the first screw rotatably locates the air door baffle and the air door handle on the second cavity bottom wall through the first connection hole.

In one embodiment, the anti-reverse spray plate is disposed between the second filtering mechanism and the damper baffle.

In an embodiment, the filter device further includes a locking mechanism, and the locking mechanism includes a locking nut, a second screw and a sealing ring, wherein the second screw is fixed to the locking nut.

In an embodiment, a second connection hole is further formed in the bottom wall of the first cavity, a thread is formed in the second connection hole, and the air filter cover is fixed to the air filter base through the locking mechanism and the second connection hole.

Embodiments of the present application provide a hedge trimmer comprising the filtering device, a power device, a transmission device and a cutting device; the power device comprises an engine and an engine box body, wherein a plurality of heat dissipation holes are formed in the side wall of the engine box body, and the engine is connected with the filtering device; the transmission device is connected with the power device; the cutting device is connected with the power device through the transmission device.

In an embodiment, the engine further includes a second air inlet, the second air inlet is in butt joint with the first air outlet, and the filter device is fixed to the engine.

In one embodiment, the hedge trimmer further comprises an exhaust device, and the exhaust device is fixed to the engine.

In an embodiment, the hedge trimmer further comprises a throttle handle and a cutting handle, wherein the throttle handle is arranged on the power device; the cutting handle is arranged on the cutting device.

Compared with the prior art, the beneficial effect of this application is:

according to the air filtering device, air entering the engine is filtered through the filtering device, so that dust and debris in the surrounding environment of the hedge trimmer are prevented from being sucked into the engine in the using process of the hedge trimmer, and the service life of the hedge trimmer is prolonged; through the plurality of heat dissipation holes formed in the engine box body, the problem that the hedge trimmer cannot continuously operate for a long time due to overheating of the engine in the using process is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view of a hedge trimmer according to an embodiment of the present disclosure.

FIG. 2 is a schematic view of a portion of a filter assembly according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural view of an empty filter holder according to an embodiment of the present application.

Fig. 4 is a partial schematic structural view of a power plant according to an embodiment of the present application.

Icon:

1-a hedge trimmer; 100-a filter device; 110-an empty filter holder; 120-a first cavity; 121-first cavity bottom wall; 122 — a first air inlet; 123-a first mounting hole; 130-a second cavity; 131-a second cavity bottom wall; 132-a first air outlet; 133-a first connection hole; 134-second mounting hole; 140-a first filter mechanism; 150-a second filter mechanism; 160-anti-backflow plate; 170-air filter cover; 171-a fixation hole; 180-damper flap; 181-damper handle; 182-a first screw; 190-a locking mechanism; 191-a locking nut; 192-a second screw; 193-sealing ring. 200-a power plant; 210-an engine; 211-a second inlet; 220-engine case; 221-heat dissipation holes; 230-throttle grip; 300-a transmission; 400-a cutting device; 410-a cutting handle; 500-exhaust means.

Detailed Description

The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.

Please refer to fig. 1, which is a schematic partial structural diagram of a hedge trimmer 1 according to an embodiment of the present application. The hedge trimmer 1 comprises a filtering device 100, a power device 200, a transmission device 300, a cutting device 400 and an exhaust device 500; wherein, the filtering device 100 is fixed on the power device 200 and is used for filtering the air entering the power device 200, and the power device 200 is the power source of the hedge trimmer 1; the transmission device 300 is connected with the power device 200 and is used for transmitting the power output by the power device 200; the cutting device 400 is connected to the power device 200 via the transmission device 300, receives the power transmitted from the power device 200 by the transmission device 300, and outputs the received power for cutting green plants.

Please refer to fig. 2, which is an exploded view of a filter assembly 100 according to an embodiment of the present disclosure. The filter device 100 includes: the air filter base 110, the first filter mechanism 140, the second filter mechanism 150, the anti-reverse spray plate 160, the air filter cover 170, the damper baffle 180 and the locking mechanism 190.

The empty filter holder 110 is a housing having an opening and a cavity therein, and the empty filter holder 110 includes a first cavity 120 for receiving a first filter mechanism 140 and a second cavity 130 for receiving a second filter mechanism 150.

In this embodiment, the second cavity 130 is further provided with a falling prevention nozzle plate 160 and a damper baffle 180, the falling prevention nozzle plate 160 is disposed between the second filter mechanism 150 and the damper baffle 180, and the damper baffle 180 is disposed between the falling prevention nozzle plate 160 and the second cavity bottom wall 131.

Please refer to fig. 3, which is a schematic structural diagram of an empty filter holder 110 according to an embodiment of the present application. The first cavity 120 has a first cavity bottom wall 121, a plurality of first air inlets 122 and a first mounting hole 123 are disposed on the first cavity bottom wall 121, and the air filter cover 170 can be fixed on the air filter base 110 through the first mounting hole 123; the second cavity 130 has a second cavity bottom wall 131, a first air outlet 132 and two second mounting holes 134 are arranged on the second cavity bottom wall 131, and the air filter base 110 can be fixed on the power device 200 through the second mounting holes 134; the first cavity bottom wall 121 is further provided with a first mounting hole 123, and the air filter cover 170 can be fixed to the air filter base 110 through the first mounting hole 123; the second cavity bottom wall 131 is further provided with a first connection hole 133, and the first connection hole 133 is used for installing and connecting the damper handle 181 and the damper baffle 180.

In this embodiment, a first filter mechanism 140 is disposed in the first cavity 120 for filtering air entering the first cavity 120 via the first air inlet 122; the second filter mechanism 150 is disposed in the second cavity 130, and after the air in the first cavity 120 enters the second cavity 130, the air is filtered again by the second filter mechanism 150 and then is guided out from the first air outlet 132, so as to enter the power device 200; the anti-reverse-flow plate 160 is arranged in the second cavity 130 and between the second filter mechanism 150 and the second cavity bottom wall 131, and is used for preventing air in the power device 200 from being directly reversely sprayed to the second filter mechanism 150 through the first air outlet 132; the air filter cover 170 covers the air filter base 110 to protect the first filter mechanism 140 and the second filter mechanism 150.

In this embodiment, the damper baffle 180 is disposed between the anti-backflow plate 160 and the second cavity bottom wall 131; the air door baffle 180 is located inside the second cavity bottom wall 131, and when the hedge trimmer 1 is in a closed state, the air door baffle 180 can block the first air outlet 132 to prevent the air in the power device 200 from flowing into the filter device 100; the damper handle 181 is positioned outside the second cavity bottom wall 131, the damper handle 181 and the damper baffle 180 are connected via the first connection hole 133 on the second cavity bottom wall 131, and the damper handle 181 and the damper baffle 180 are fixed on the second cavity bottom wall 131 by using a first screw 182; the damper flap 180 is interlocked when the damper handle 181 is rotated.

In this embodiment, the locking mechanism 190 includes a locking nut 191, a second screw 192, and a sealing ring 193; the second screw 192 is fixed to the locking nut 191, and the locking mechanism 190 is connected to the first mounting hole 123 of the air filter base 110 through the fixing hole 171 of the air filter cover 170, thereby fixing the air filter cover 170 to the air filter base 110.

In this embodiment, the first filter mechanism 140 includes a coarse sponge filter element, and the second filter mechanism 150 includes a paper filter.

In one embodiment, the second filtering mechanism 150 may be a fine sponge filter element; a fine sponge filter element and a felt; paper filter and felt; the second filtering mechanism 150 of the present application can be combined by various filtering products according to practical requirements, but not limited thereto.

Please refer to fig. 4, which is a schematic partial structural diagram of a power device 200 according to an embodiment of the present application. The power device 200 includes an engine 210 and an engine case 220, the engine case 220 is provided with a plurality of heat dissipation holes 221, and the heat dissipation holes 221 enable air inside the engine case 220 to circulate with outside air, so as to reduce the temperature of the engine 210 when the engine 210 is overheated.

The engine 210 is further provided with a second air inlet 211, and the second air inlet 211 is butted with the first air outlet 132 on the filter device 100 and receives the air filtered by the filter device 100; the filter device 100 is fixed to the engine 210.

In this embodiment, the engine 210 includes a carburetor, an oil can, a cylinder, a spark plug, an igniter, a piston rod, a crank, a crankshaft and a clutch, the second air inlet 211 is disposed on the carburetor, the filter device 100 is fixed on the carburetor through two second mounting holes 134 on the bottom wall 131 of the second cavity, the oil can is connected with the carburetor, the cylinder is connected with the carburetor, the spark plug is fixed on the cylinder, the igniter is connected with the spark plug, the piston is movably disposed in the cylinder, the piston rod is connected with the piston and disposed in the engine case 220, the crank is connected with the piston rod and disposed in the engine case 220, the crankshaft is fixed on the crank and disposed in the engine case 220, and the clutch is connected with the crankshaft and disposed in the engine case 220.

When the engine 210 rotates at a high speed, not only the heat generated by itself but also the heat generated by the friction of the bearings, the friction of the clutch and the driven plate generate a great amount of heat, which affects the durability of the engine 210 and reduces the service life of the engine 210. Therefore, the plurality of heat radiation holes 221 are formed in the engine case 220, and the high-temperature gas inside the engine 210 is discharged by the centrifugal force generated when the clutch housing rotates, thereby achieving the effects of cooling and cooling, and improving the continuous service life of the engine 210.

In this embodiment, the hedge trimmer 1 further includes an accelerator handle 230, the accelerator handle 230 is fixed to the power device 200, and the accelerator handle 230 is provided with a control switch, so that the hedge trimmer 1 can be in a starting state while holding the accelerator handle 230.

In this embodiment, the transmission 300 includes a gear housing base, a gear housing cover, a drive gear, a driven gear, and a connecting rod. Wherein, the gear box cover covers the gear box seat; the driving gear is rotatably arranged in the gear box and is connected with the clutch; the driven gear is rotatably arranged in the gear box and is connected with the driving gear; the connecting rod is arranged in the gear box, the connecting rod can move along with the rotation of the driven gear, the connecting rod comprises an upper connecting rod and a lower connecting rod, the upper connecting rod is arranged on one side of the driven gear, and the lower connecting rod is arranged on the other side of the driven gear.

In this embodiment, the cutting device 400 further includes: a pressure plate, a blade and a baffle plate; the blade is connected with the pressure plate and the connecting rod, the blade comprises an upper blade and a lower blade, the upper blade is connected with the pressure plate and the upper connecting rod, and the lower blade is connected with the upper blade and the lower connecting rod; the baffle is connected with the pressure plate.

In this embodiment, the hedge trimmer 1 further includes a cutting handle 410, the cutting handle 410 is disposed on the cutting device 400, and the operator can smoothly perform the operation by holding the cutting handle 410 during the operation. In this embodiment, the hedge trimmer 1 further includes an exhaust device 500, and the exhaust device 500 includes a silencing device, and the silencing device includes a base, a partition plate, a cover body, and an exhaust pipe. Wherein, the base is provided with a base air inlet; the clapboard is connected with the base; the cover body is connected with the base through the partition plate and is provided with a through hole; the exhaust pipe is arranged in the through hole and connected with the cover body; the base air inlet is in butt joint with an air outlet of the engine 210 arranged on the engine 210.

When the gas in the engine 210 is exhausted through the silencer, the noise sound wave generated by the engine 210 enters the base of the silencer and oscillates back and forth among the base, the partition plate and the cover body, so that the noise generated by the engine 210 is obviously reduced when being conducted to the outside, and the influence on the surrounding environment is reduced.

In this embodiment, the length of the blade in the cutting device 400 is shorter than that of the blade in the hedge trimmer in the prior art, and the length of the blade in the cutting device 400 is more in line with the use habit of the Chinese; the distance between the accelerator handle 230 and the cutting handle 410 is shorter than the distance between the corresponding positions of the hedge trimmer in the prior art, so that the use habit of the Chinese is better met, the operation smoothness of the Chinese is improved, and the operation fatigue is reduced; because the size of the corresponding part is reduced and the heat dissipation holes 221 are formed, the whole weight of the hedge trimmer 1 is 5.3 kg, while the weight of the hedge trimmer 1 in the market is 5.7-5.8 kg, and the hedge trimmer 1 is more suitable for long-time operation of operators.

When the hedge trimmer 1 is used, a large amount of dust and green plant debris can be raised in the ambient air, the air containing the dust and debris in the ambient environment enters the first cavity 120 through the first air inlet 122, the air enters the second cavity 130 after the larger dust and debris in the air are filtered by the first filter mechanism 140, the smaller dust and debris in the air are filtered by the second filter mechanism 150, the filtered air is output to the second air inlet 211 through the first air outlet 132, the second air inlet 211 receives the filtered air transmitted from the first air outlet 132 and guides the filtered air into the engine 210, and the engine 210 operates normally. When the hedge trimmer 1 is in the closed state, the damper handle 181 is rotated to drive the damper flap 180 to rotate, so as to block the first air outlet 132.

According to the air filter, air entering the engine 210 can be filtered for the second time through the first filter mechanism 140 and the second filter mechanism 150, external dust and fine debris are prevented from entering the engine 210 along with the air, and therefore the service life of the engine 210 is prolonged; through the plurality of heat dissipation holes 221 formed in the engine case 220, high-temperature gas inside the engine 210 is discharged by using centrifugal force generated when the clutch holder rotates, thereby achieving cooling and cooling effects and improving continuous service time of the engine 210.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A filter arrangement, comprising:

an air filter base comprising a first cavity, a second cavity;

the first filtering mechanism is arranged in the first cavity;

the second filtering mechanism is arranged in the second cavity;

the anti-reverse-flow plate is arranged in the second cavity and is arranged between the second filtering mechanism and the bottom wall of the second cavity;

and the air filter cover covers the air filter base.

2. The apparatus of claim 1, wherein the air filter base comprises a first air inlet port disposed in the bottom wall of the first cavity, and a first air outlet port disposed in the bottom wall of the second cavity.

3. The device as claimed in claim 2, wherein the filter device further comprises a damper baffle and a damper handle, the second cavity bottom wall is further provided with a first connecting hole, the damper baffle is disposed on the inner side of the second cavity bottom wall, the damper handle is disposed on the outer side of the second cavity bottom wall, the damper handle is connected with the damper baffle by a first screw, and the first screw rotatably locates the damper baffle and the damper handle on the second cavity bottom wall through the first connecting hole.

4. The apparatus of claim 3, wherein the anti-backup plate is disposed between the second filter mechanism and the damper flap.

5. The device of claim 4, further comprising a locking mechanism including a locking nut, a second screw, and a sealing ring, wherein the second screw is secured to the locking nut.

6. The apparatus of claim 5, wherein the first cavity further comprises a second connecting hole in a bottom wall thereof, wherein the second connecting hole is threaded, and the air filter cover is fixed to the air filter base by the locking mechanism and the second connecting hole.

7. A hedge trimmer characterized in that the hedge trimmer comprises:

a filtration device according to any one of claims 2 to 6;

the power device comprises an engine and an engine box body, a plurality of heat dissipation holes are formed in the side wall of the engine box body, and the engine is connected with the filtering device;

the transmission device is connected with the power device; and

the cutting device is connected with the power device through the transmission device.

8. A hedge trimmer according to claim 7, wherein the engine further comprises a second air inlet which interfaces with the first air outlet, the filter device being secured to the engine.

9. A hedge trimmer according to claim 8, characterized in that the hedge trimmer further comprises an exhaust fixed to the engine.

10. A hedge trimmer according to claim 7, characterized in that the hedge trimmer further comprises:

the accelerator handle is arranged on the power device; and

and the cutting handle is arranged on the cutting device.

Images