Heat dissipation device of hedge trimmer

Abstract

The heat dissipation device of the hedge trimmer comprises a protective shell, a cover plate is arranged above the protective shell, a fixing piece is fixedly connected to the upper surface of the cover plate, a round hole is formed in the middle of the fixing piece, an air suction fan is arranged in the round hole, and a supporting rod is fixedly connected to the outer side of the air suction fan. A motor is arranged in the protective shell, the moving end of the motor is fixedly connected with a rotating disc, the upper surface of the rotating disc is rotationally connected with a connecting plate, one end of the connecting plate is rotationally connected with a sliding saw blade, and the outer side of the motor is fixedly connected with a heat dissipation plate. According to the utility model, the plurality of heat dissipation plates are fixedly connected to the motor, the heat dissipation of the motor can be better carried out through the plurality of heat dissipation plates, and the heat dissipation of the motor can be further carried out through the spiral cooling pipes sleeved on the outer sides of the heat dissipation plates, so that the phenomenon that the motor is damaged due to large load or long-time operation is effectively avoided. And the motor is easy to burn out or frequently shut down for protection, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hedge trimmers, in particular to a heat dissipation device for a hedge trimmer. Background Art

[0002] Hedge trimmers, also known as hedge shears, are suitable for professional pruning in landscaping such as tea pruning, parks, gardens, roadside hedges, etc. Hedge trimmers have good durability and can be used for professional commercial pruning. Compared with ordinary hedge trimmers, they are very easy to start, have front and rear handles, are very simple and convenient to operate, have a wide range of applications, and can be equipped with various knives.

[0003] Existing hedge trimmers will generate a lot of heat after being used for a long time. The heat dissipation holes on the shell cannot meet the mechanical heat dissipation. When the load is large or the operation is long, the motor is easily burned or frequently shut down for protection, affecting the operator's use effect and work efficiency. Therefore, it is urgent to design a heat dissipation device for hedge trimmers to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a heat dissipation device for a hedge trimmer to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat dissipation device for a hedge trimmer comprises a protective shell, a cover plate is arranged above the protective shell, and a fixing piece is fixedly connected to the upper surface of the cover plate, a circular hole is opened in the middle of the fixing piece, and an air suction fan is arranged inside the circular hole, a support rod is fixedly connected to the outer side of the air suction fan, and one end of the support rod is fixedly connected to the inner wall of the circular hole, a motor is arranged inside the protective shell, a turntable is fixedly connected to the moving end of the motor, and a connecting plate is rotatably connected to the upper surface of the turntable, a sliding saw blade is rotatably connected to one end of the connecting plate, a plurality of heat dissipation plates are fixedly connected to the outer side of the motor, and spiral cooling pipes are sleeved on the outer sides of the plurality of heat dissipation plates, first connecting pipe and second connecting pipe are respectively connected to two ends of the spiral cooling pipe, one end of the first connecting pipe and the second connecting pipe are respectively connected to a cooling device and a box, and the cooling device and the box are fixedly connected to the outer walls on both sides of the protective shell.

[0007] Preferably, a water pump is provided on one side of the box body, and a U-shaped connecting pipe is fixedly connected to the water outlet of the water pump, and one end of the U-shaped connecting pipe is fixedly connected to the cooling device.

[0008] Preferably, circular holes matching the first connecting tube and the second connecting tube are provided on both sides of the protective shell, and the first connecting tube and the second connecting tube are inserted into the cooling device and the box through the circular holes on both sides of the protective shell.

[0009] Preferably, a through hole is formed at the bottom of the protective shell, and a second filter screen is fixedly connected to the bottom of the through hole.

[0010] Preferably, a fixed saw blade is fixedly connected to one side of the protective shell, and the fixed saw blade is slidably connected to the sliding saw blade.

[0011] Preferably, a handle is fixedly connected to one side of the protective shell, and a handle is fixedly connected to the other side of the protective shell.

[0012] In the above technical solution, the utility model provides a heat dissipation device for a hedge trimmer, and the beneficial effects are:

[0013] (1) By fixing a plurality of heat sinks on the motor, the heat dissipation of the motor can be better achieved through the heat sinks, and the heat dissipation of the motor can be further improved by installing a spiral cooling pipe on the outside of the heat sink, which effectively avoids the motor from being easily burned out or frequently shutting down for protection when the load is large or the operation is long, thereby improving the work efficiency.

[0014] (2) By providing a blower fan on the fixing part, the internal components of the protective housing can be effectively cooled. By providing heat dissipation holes at the bottom of the protective housing, the air circulation inside the protective housing can be smoother and the heat dissipation effect can be better.

[0015] (3) By arranging the first filter screen and the second filter screen at the bottom of the protective shell and the upper surface of the fixing member, dust and debris can be effectively prevented from entering the interior of the protective shell and affecting the internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The utility model provides a three-dimensional schematic diagram of the overall structure of a heat dissipation device embodiment of a hedge trimmer.

[0018] Figure 2 A three-dimensional schematic diagram of the overall structure from another perspective is provided for an embodiment of a heat dissipation device of a hedge trimmer of the utility model.

[0019] Figure 3 The present invention is a three-dimensional schematic diagram of a blowing fan structure provided in an embodiment of a heat dissipation device of a hedge trimmer.

[0020] Figure 4 The present invention is a three-dimensional schematic diagram of a first connecting pipe structure provided in an embodiment of a heat dissipation device of a hedge trimmer according to the present invention.

[0021] Figure 5 A three-dimensional schematic diagram of a motor structure provided for an embodiment of a heat dissipation device of a hedge trimmer according to the utility model.

[0022] 1 protective housing, 2 cover plate, 3 fixing part, 4 round hole, 5 suction fan, 6 support rod, 7 first filter, 8 second filter, 9 box, 10 cooling device, 11 motor, 12 turntable, 13 heat sink, 14 spiral cooling pipe, 15 first connecting pipe, 16 connecting plate, 17 sliding saw blade, 18 fixed saw blade, 19 water pump, 20 U-shaped connecting pipe, 21 second connecting pipe, 22 handle, 23 handle. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1-5 As shown, a heat dissipation device of a hedge trimmer provided by an embodiment of the utility model comprises a protective shell 1, a cover plate 2 is arranged above the protective shell 1, and a fixing member 3 is fixedly connected to the upper surface of the cover plate 2, a circular hole 4 is opened in the middle of the fixing member 3, and an air suction fan 5 is arranged inside the circular hole 4, a support rod 6 is fixedly connected to the outer side of the air suction fan 5, and one end of the support rod 6 is fixedly connected to the inner wall of the circular hole 4, a motor 11 is arranged inside the protective shell 1, a turntable 12 is fixedly connected to the moving end of the motor 11, and a connecting plate 16 is rotatably connected to the upper surface of the turntable 12, and a sliding saw blade 17 is rotatably connected to one end of the connecting plate 16, a heat dissipation plate 13 is fixedly connected to the outer side of the motor 1, and a spiral cooling pipe 14 is sleeved on the outer side of the heat dissipation plate 13, and a first connecting pipe 15 and a second connecting pipe 21 are respectively connected to the two ends of the spiral cooling pipe 14, and one end of the first connecting pipe 15 and the second connecting pipe 21 are respectively connected to the cooling device 10 and the box body 9, and the cooling device 10 and the box body 9 are fixedly connected to the outer walls of both sides of the protective shell 1.

[0025] Specifically, in this embodiment, a protective shell 1 is included, a cover plate 2 is provided above the protective shell 1, and a fixing member 3 is fixedly connected to the upper surface of the cover plate 2. The cover plate 2 can be fixed to the protective shell 1 by a snap connection or by a bolt connection. A circular hole 4 is opened in the middle of the fixing member 3, and an air suction fan 5 is provided inside the circular hole 4. A support rod 6 is fixedly connected to the outer side of the air suction fan 5, and one end of the support rod 6 is fixedly connected to the inner wall of the circular hole 4. The air blowing fan 5 is fixedly connected to the circular hole 4 through the support rod 6. A plurality of support rods 6 are provided. A motor 11 is provided inside the protective shell 1. A turntable 12 is fixedly connected to the moving end of the motor 11, and a connecting plate 16 is rotatably connected to the upper surface of the turntable 12. A sliding saw blade 17 is rotatably connected to one end of the connecting plate 16. The connecting plate 16 is rotatably connected to the turntable 12 through a rotating shaft, and the rotating shaft is fixedly connected near the turntable On the upper surface of the outer side of 12, the turntable 12 and the connecting plate 16 are in an eccentric structure. The turntable 12 is driven to rotate by the motor 11, and the sliding saw blade 17 is driven to move by the connecting plate 16. A plurality of heat sinks 13 are fixedly connected to the outer side of the motor 1, and a plurality of heat sinks 13 are sleeved on the outer sides thereof with spiral cooling tubes 14. The heat dissipation of the motor 11 can be better performed by the heat sinks 13 and the spiral cooling tubes 14. The first connecting tube 15 and the second connecting tube 21 are respectively connected at both ends of the spiral cooling tube 14. One end of the first connecting tube 15 and the second connecting tube 21 are respectively connected to the cooling device 10 and the box body 9, and the cooling device 10 and the box body 9 are fixedly connected to the outer walls on both sides of the protective shell 1. A coolant is arranged inside the box body 9. The coolant inside the box body 9 can take away the heat from the motor 11 through the spiral cooling tubes 14, thereby ensuring the normal operation of the motor 11.

[0026] The utility model provides a heat dissipation device for a hedge trimmer, which has a plurality of heat dissipation plates 13 fixedly connected to a motor 11. The plurality of heat dissipation plates 13 can better dissipate heat for the motor 11, and a spiral cooling tube 14 sleeved on the outer side of the heat dissipation plate 13 can further dissipate heat for the motor 11, effectively preventing the motor 11 from being easily burned out or frequently shutting down for protection when the load is large or the operation is long, thereby increasing work efficiency.

[0027] In an embodiment provided by the utility model, a water pump 19 is provided on one side of the box body 9, and a U-shaped connecting pipe 20 is fixedly connected to the water outlet end of the water pump 19, one end of the U-shaped connecting pipe 20 is fixedly connected to the cooling device 10, and the coolant is drawn out from the inside of the box body 9 through the water pump 19, enters the inside of the U-shaped connecting pipe 20, and then enters the inside of the cooling device 10 from the inside of the U-shaped connecting pipe 20, and then enters the spiral cooling pipe 14 through the first connecting pipe 15, thereby dissipating the heat of the motor 11.

[0028] In another embodiment provided by the utility model, circular holes compatible with the first connecting tube 15 and the second connecting tube 21 are opened on both sides of the protective shell 1, and the first connecting tube 15 and the second connecting tube 21 pass through the circular holes on both sides of the protective shell 1 and are plugged into the cooling device 10 and the box body 9. A circulation loop is formed by the first connecting tube 15, the second connecting tube 21 and the U-shaped connecting tube 20, so that the coolant can be circulated and used to avoid waste.

[0029] In another embodiment provided by the utility model, a through hole is opened at the bottom of the protective shell 1, and a second filter screen 8 is fixedly connected to the bottom of the through hole. The air circulation speed can be increased through the blowing fan 5 inside the circular hole 4 and the through hole opened at the bottom of the protective shell 1, so as to better dissipate heat for the components inside the protective shell 1.

[0030] In one embodiment provided by the utility model, a fixed saw blade 18 is fixedly connected to one side of the protective shell 1, and the fixed saw blade 18 is slidably connected to the sliding saw blade 17, and a sliding groove adapted to the sliding saw blade 17 is opened on the fixed saw blade 18, so that the sliding saw blade 17 can only slide along the length direction of the fixed saw blade 18, and a fixed support is fixedly connected to one end of the sliding saw blade 17, and the fixed support on the sliding saw blade 17 is rotatably connected to the connecting plate 16 through a rotating shaft, and a square groove adapted to the sliding saw blade 17 is opened at a position corresponding to the sliding saw blade 17 on one side of the protective shell 1.

[0031] In another embodiment provided by the utility model, a handle 22 is fixedly connected to one side of the protective shell 1, and a handle 23 is fixedly connected to the other side of the protective shell 1. The handle 22 is a U-shaped structure, which is convenient for grasping. The handle 23 is used to assist grasping and can also better move the direction of the hedge trimmer.

[0032] Working principle: The coolant inside the box body 9 is extracted by the water pump 19, so that the coolant enters the U-shaped connecting pipe 20, and then enters the cooling device 10 from the U-shaped connecting pipe 20. The coolant is cooled by the cooling device 10, and then enters the first connecting pipe 15, and then enters the spiral cooling pipe 14. The spiral cooling pipe 14 and the heat sink 13 cooperate with each other to dissipate heat for the motor 11. The coolant finally returns to the inside of the box body 9, and the blower fan 5 inside the circular hole 4 cooperates with the heat dissipation holes at the bottom of the protective shell 1, which can make the air circulation inside the protective shell smoother, and better dissipate heat for the internal components of the protective shell 1, so as to avoid the motor 11 from being easily burned out or frequently shut down for protection when the load is large or the operation is long, thereby improving the work efficiency.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat dissipation device for a hedge trimmer, comprising a protective housing (1), characterized in that: A cover plate (2) is arranged above the protective shell (1), and a fixing member (3) is fixedly connected to the upper surface of the cover plate (2), a circular hole (4) is opened in the middle of the fixing member (3), and an air suction fan (5) is arranged inside the circular hole (4), a support rod (6) is fixedly connected to the outer side of the air suction fan (5), and one end of the support rod (6) is fixedly connected to the inner wall of the circular hole (4), a motor (11) is arranged inside the protective shell (1), a rotating disk (12) is fixedly connected to the moving end of the motor (11), and a connecting plate (16) is rotatably connected to the upper surface of the rotating disk (12) One end of the connecting plate (16) is rotatably connected to a sliding saw blade (17); a plurality of heat sinks (13) are fixedly connected to the outside of the motor (11); and a spiral cooling tube (14) is sleeved on the outside of the plurality of heat sinks (13); two ends of the spiral cooling tube (14) are respectively connected to a first connecting tube (15) and a second connecting tube (21); one end of the first connecting tube (15) and the second connecting tube (21) are respectively connected to a cooling device (10) and a box (9); and the cooling device (10) and the box (9) are fixedly connected to the outer walls of both sides of the protective shell (1).

2. A heat dissipation device for a hedge trimmer according to claim 1, characterized in that: A water pump (19) is provided on one side of the box body (9), and a U-shaped connecting pipe (20) is fixedly connected to the water outlet end of the water pump (19), and one end of the U-shaped connecting pipe (20) is fixedly connected to the cooling device (10).

3. The heat dissipation device of a hedge trimmer according to claim 1, characterized in that: Circular holes matching the first connecting tube (15) and the second connecting tube (21) are provided on both sides of the protective shell (1), and the first connecting tube (15) and the second connecting tube (21) pass through the circular holes on both sides of the protective shell (1) and are plugged into the cooling device (10) and the box body (9).

4. A heat dissipation device for a hedge trimmer according to claim 2, characterized in that: A through hole is provided at the bottom of the protective shell (1), and a second filter screen (8) is fixedly connected to the bottom of the through hole.

5. The heat dissipation device of a hedge trimmer according to claim 1, characterized in that: A fixed saw blade (18) is fixedly connected to one side of the protective housing (1), and the fixed saw blade (18) is slidably connected to the sliding saw blade (17).

6. The heat dissipation device of a hedge trimmer according to claim 1, characterized in that: A handle (22) is fixedly connected to one side of the protective shell (1), and a hand grip (23) is fixedly connected to the other side of the protective shell (1).

Images