CN211398518U - Heat radiator of pruning shears and pruning shears - Google Patents

Abstract

The utility model discloses a heat abstractor and pruning scissors of pruning scissors, including the motor, set up in the motor shaft of motor tip, install fan blade, planetary gear set, gear box cover, gear box and bottom plate on the motor shaft, motor shaft drive planetary gear set, planetary gear set all is located the gear box with the fan blade, outside the motor is located the gear box, gear box cover lid closed the top at the gear box, the bottom plate mounting is in the bottom of gear box, gear box and/or gear box cover and seted up the louvre. The motor drives the fan blade and the planetary gear set to work simultaneously through the motor shaft, and the fan blade and the planetary gear set are located in the gear box simultaneously, so that the fan blade can effectively stir air in the gear box, timely heat dissipation is carried out on the position of the planetary gear set, meanwhile, hot air can be discharged from the heat dissipation holes, and the purpose of timely exchanging air in the gear box is achieved. Meanwhile, the gear box cover and the bottom plate are still fixed from two ends of the gear box, and the positioning effect of the planetary gear set is achieved.

Description

Heat radiator of pruning shears and pruning shears

[ technical field ] A method for producing a semiconductor device

The utility model relates to a heat abstractor and pruning scissors of pruning scissors belongs to the garden instrument field.

[ background of the invention ]

Most of the pruning shears adopt a brushless motor driving mode, a gear box is closed, heat dissipation is completely realized by fan blades of a cooling motor, and the cooling effect is limited. The upper surface of the gear box and the gear box cover are fixed together through screws, and the lower surface of the gear box and the bottom cover are also fixed through screws to form a closed motion environment. When the machine continuously operates, the temperature under the closed environment cannot be effectively dissipated, and can be continuously raised until the heat balance is reached, but the temperature at the moment is too high (reaching more than 150 ℃ in actual test), and if no effective heat dissipation exists, the high-temperature area on the surface of the machine shell is easy to cause personal injury.

[ Utility model ] content

The utility model aims to solve the technical problem that overcome prior art not enough and provide a heat abstractor and pruning scissors of pruning scissors that life is longer, the radiating effect is better.

Solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a heat abstractor of pruning scissors, includes the motor, set up in the motor shaft of motor tip, install fan blade, planetary gear set, gear box lid, gear box and bottom plate on the motor shaft, motor shaft drive planetary gear set, planetary gear set and fan blade all are located the gear box, and the motor is located outside the gear box, and gear box lid closes the top at the gear box, and the bottom plate is installed in the bottom of gear box, and gear box and/or gear box cover have seted up the louvre.

The utility model has the advantages that:

the motor drives the fan blade and the planetary gear set to work simultaneously through the motor shaft, and the fan blade and the planetary gear set are located in the gear box simultaneously, so that the fan blade can effectively stir air in the gear box, timely heat dissipation is carried out on the position of the planetary gear set, meanwhile, hot air can be discharged from the heat dissipation holes, and the purpose of timely exchanging air in the gear box is achieved. Meanwhile, the gear box cover and the bottom plate are still fixed from two ends of the gear box, and the positioning effect of the planetary gear set is achieved.

Be provided with the wind channel that supplies the inside air of gear box to outwards flow on the lateral wall of gear box.

The fan blade pressure equipment is on the motor shaft.

The motor is supported on the gear box cover.

Planetary gear set includes sun tooth, planet carrier, ring gear and a plurality of planetary gear, and the ring gear location is on the inner wall of gear box, and the sun tooth is fixed on the motor shaft, and the sun tooth is located the centre of ring gear, and all planetary gear along sun tooth week distribute between sun tooth and ring gear inner wall, and the planet tooth meshes with sun tooth and ring gear simultaneously, and planetary gear's central point is located on the planet carrier, and the planet carrier is installed in the ring gear, and the sun tooth rotates in order to drive the planet carrier and rotates.

Planetary gear set is still including fixing the locating pin on the planet carrier, and the planet tooth rotates and sets up on the locating pin.

The fan blade compresses tightly on the sun tooth, the fan blade is located between sun tooth and the gear case lid.

Planetary gear set still includes the backing plate, and the backing plate lid closes the tip that inner gear ring is close to the gear box lid, and the backing plate is located between fan blade and the planet tooth.

Be provided with the output shaft on the planet carrier.

A pruning shear comprises a machine shell and a heat dissipation device of the pruning shear, wherein the heat dissipation device is arranged in the machine shell.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a schematic perspective view of a pruning shear according to an embodiment of the present invention;

fig. 2 is an upper portion of an exploded schematic view of a heat dissipation device according to an embodiment of the present invention;

fig. 3 is a middle part of an explosion structure schematic diagram of a heat dissipation device according to an embodiment of the present invention;

fig. 4 is a lower portion of an exploded view of a heat dissipation device according to an embodiment of the present invention;

fig. 5 is a flow chart of the air flow in the pruning shears according to the embodiment of the present invention.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the following description, the appearances of the indicating orientation or positional relationship, such as the terms "inner", "outer", "upper", "lower", "left", "right", etc., are only for convenience in describing the embodiments and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Example (b):

referring to fig. 1-5, the present embodiment provides a pair of pruning shears, including a housing 1 and a heat dissipation device 2, wherein the heat dissipation device 2 is disposed in the housing 1.

The heat dissipation device 2 comprises a motor 4, a motor shaft 3 arranged at the end of the motor 4, and fan blades 5, a planetary gear set, a gear box cover 9, a gear box 6 and a bottom plate 7 which are arranged on the motor shaft 3.

The planetary gear set includes a positioning pin, a backing plate 13, a sun gear 10, a planet carrier 11, an inner gear ring 12, and a plurality of planet gears 14.

The fan blade 5 is press-fitted on the motor shaft 3 to ensure that the motor shaft 3 drives the fan blade 5 to rotate synchronously. The motor 4 is supported on the gear box cover 9, and the fan blades 5 are positioned below the gear box cover 9. The sun gear 10 is fixed on the motor shaft 3, the sun gear 10 is located below the fan blade 5, and the motor shaft 3 drives the fan blade 5 and the sun gear 10 to synchronously rotate.

In the present embodiment, the number of the carrier 11 is two, the number of the planet gears 14 is eight, and the number of the positioning pins is eight. The two planet carriers 11 are respectively an upper planet carrier and a lower planet carrier, and the backing plate 13, the upper planet carrier and the lower planet carrier are sequentially arranged from top to bottom along the axial direction of the motor shaft 3. Four positioning pins are uniformly fixed on the upper surface of the upper planet carrier along the circumferential direction of the upper planet carrier, and the other four positioning pins are uniformly fixed on the upper surface of the lower planet carrier along the circumferential direction of the lower planet carrier.

Four of the planet gears 14 are rotatably disposed on the four pins of the upper planet carrier, and the other four planet gears 14 are rotatably disposed on the four pins of the lower planet carrier.

The backing plate 13 is shaped as a circular ring, and the sun gear 10 moves across the middle hole of the backing plate 13 to the center of the upper surface of the upper carrier, and engages with four planetary gears 14 on the upper carrier at the same time. The backing plate 13 is positioned between the fan blade 5 and the planetary gears 14 on the upper planetary carrier, so that the fan blade 5 and the planetary gears 14 on the upper planetary carrier are isolated.

The center of the bottom surface of the upper planet carrier is fixed with a transmission gear with the same shape as the sun gear 10, and the transmission gear is positioned at the center of the upper surface of the lower planet carrier and is simultaneously meshed with four planet gears 14 on the lower planet carrier.

An output shaft 15 is fixed at the center of the bottom surface of the lower planet carrier, and the output shaft 15 and the motor shaft 3 are coaxially arranged.

All the planet gears 14 and the carrier 11 are located in the middle of the ring gear 12 while ensuring that all the planet gears 14 are in engagement with the inner wall of the ring gear 12. The annulus gear 12 is then locked to the inner wall of the gearbox 6 by a latch. The bottom plate 7 is fixedly arranged at the bottom opening of the gear box 6 through screws, and the gear box cover 9 is fixedly arranged at the top opening of the gear box 6 through screws. The bottom plate 7 and the gear case cover 9 cover the bottom and top openings of the gear case 6, respectively. The motor 4 is now located outside the gearbox 6 to avoid heat transfer from the motor 4 into the gearbox 6.

The backing plate 13 covers the end of the internal gear ring 12 close to the gearbox cover 9, the backing plate 13 is also positioned in the gearbox 6, and the backing plate 13 is supported by the internal gear ring 12.

The motor shaft 3 drives the sun gear 10 to rotate, the sun gear 10 drives the four planet gears 14 on the upper planet carrier to rotate around the four positioning pins on the upper planet carrier respectively, and meanwhile, the four planet gears 14 on the upper planet carrier drive the upper planet carrier together with the first transmission gear to rotate around the motor shaft 3 through the four positioning pins.

Similarly, the transmission gear drives the four planet gears 14 on the lower planet carrier to rotate around the four positioning pins on the lower planet carrier respectively, and the four planet gears 14 on the lower planet carrier drive the lower planet carrier to communicate with the output shaft 15 through the four positioning pins and rotate around the motor shaft 3.

The whole planetary gear set and the fan blades 5 are located in the gear box 6, and the planetary gear set is supported by the gear box 6 matching with the gear box cover 9 and the bottom plate 7.

Because the fan blade 5 is right opposite to the sun gear 10 through the motor shaft 3, the fan blade 5 can effectively radiate the heat of the fan blade 5 when rotating.

In order to facilitate the discharge of hot air inside the gear box 6, air outside the gear box 6 enters the gear box 6, so that the temperature of the planetary gear set is reduced, and a plurality of heat dissipation holes 16 are formed in the gear box cover 9.

In other embodiments, the side wall of the gear box 6 may also be provided with heat dissipation holes 16.

In addition, an air duct 8 for air in the gear box 6 to flow out is further arranged on the side wall of the gear box 6 in the embodiment.

Specifically, through the rotation of fan blade 5, control gear box 6 outside air flows into gear box 6 through louvre 16 on the gear box lid 9 to take away the heat in the gear box 6 and leave gear box 6 through wind channel 8, reach the purpose of cooling of dispelling the heat to gear box 6 inside.

In addition, the fan blades 5 are tightly pressed on the sun teeth 10, and the installation of the fan blades 5 is positioned by utilizing the sun teeth 10 so as to increase the stability of the fan blades 5 during rotation.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. The utility model provides a heat abstractor of pruning scissors which characterized in that: including the motor, set up in the motor shaft of motor tip, install fan blade, planetary gear set, gear box lid, gear box and bottom plate on the motor shaft, motor shaft drive planetary gear set, planetary gear set all is located the gear box with the fan blade, and the motor is located outside the gear box, and gear box lid closes the top at the gear box, and the bottom plate is installed in the bottom of gear box, and gear box and/or gear box cover have seted up the louvre.

2. The heat dissipating device of pruning shears according to claim 1, wherein: and an air duct for air in the gear box to flow outwards is arranged on the side wall of the gear box.

3. The heat dissipating device of pruning shears according to claim 1, wherein: the fan blades are pressed on a motor shaft.

4. The heat dissipating device of pruning shears according to claim 1, wherein: the motor is supported on the gear box cover.

5. The heat dissipating device of pruning shears according to claim 4, wherein: the planetary gear set comprises a sun gear, a planet carrier, an inner gear ring and a plurality of planetary gears, the inner gear ring is positioned on the inner wall of the gear box, the sun gear is fixed on a motor shaft, the sun gear is positioned in the middle of the inner gear ring, all the planetary gears are distributed between the sun gear and the inner wall of the inner gear ring along the circumferential direction of the sun gear, the planetary gears are meshed with the sun gear and the inner gear ring at the same time, the centers of the planetary gears are positioned on the planet carrier, the planet carrier is installed in the inner gear ring, and the sun gear.

6. The heat dissipating device of pruning shears according to claim 5, wherein: the planetary gear set also comprises a positioning pin fixed on the planet carrier, and the planet gear is rotatably arranged on the positioning pin.

7. The heat dissipating device of pruning shears according to claim 5, wherein: the fan blades are tightly pressed on the sun gear and are positioned between the sun gear and the gearbox cover.

8. The heat dissipating device of pruning shears according to claim 5, wherein: the planetary gear set further comprises a base plate, the base plate covers the end portion, close to the gear box cover, of the inner gear ring, and the base plate is located between the fan blades and the planetary gears.

9. The heat dissipating device of pruning shears according to claim 5, wherein: an output shaft is arranged on the planet carrier.

10. A pruning shear is characterized in that: a heat sink comprising a housing and a pair of pruning shears according to any of claims 1-9, the heat sink being arranged within the housing.

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