CN210157700U - High-efficiency electric scissors - Google Patents

Abstract

The utility model discloses a high-efficient electric scissors, include casing, stationary knife and move the sword, and should move the sword and be connected to a motor through drive mechanism power, this motor is connected to the power through trigger system electricity, drive mechanism includes the bevel pinion that power is connected to this motor, the bevel pinion that matches with this bevel pinion to and the drive spur gear with the coaxial fixed of this bevel pinion, and simultaneously, this casing internal fixation has a cast aluminium spare, should move the middle part pin joint of sword on this cast aluminium spare upper portion, and should move the lower part of sword and be fixed with a pendulum gear, this pendulum gear and this drive spur gear meshing, and, this cast aluminium spare's left side is fixed with an apron, from left side right side, a left bearing washer, a plane bearing, a right bearing washer, this bevel pinion centre gripping is between this apron and this cast aluminium spare's left side face. The utility model has the advantages that: the operation is smoother and the working efficiency is higher.

Description

High-efficiency electric scissors

Technical Field

The invention relates to the technical field of gardening tools, in particular to high-efficiency electric scissors.

Background

The electric scissors are widely applied to the fields of gardens, gardening and the like and are used for shearing branches of nursery stocks and the like. Generally, electric scissors comprise a housing, a stationary blade and a movable blade, and the movable blade is power-connected to a motor through a transmission mechanism, and the motor is electrically connected to a power source through a trigger system. It has the common drawbacks that: the loss is larger when the moment is transmitted, so that the working efficiency of the electric scissors is lower.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the efficient electric scissors which have the characteristics of smooth operation and high working efficiency.

In order to achieve the purpose, the invention adopts the technical scheme that: high-efficient electric scissors, including casing, stationary knife and move the sword, and should move the sword and pass through drive mechanism power and be connected to a motor, this motor is connected to the power through trigger system electricity, drive mechanism includes the bevel pinion that power is connected to this motor, the bevel pinion that matches with this bevel pinion to and the drive spur gear of coaxial fixed with this bevel pinion, simultaneously, this casing internal fixation has a cast aluminium spare, and the middle part pin joint that should move the sword is on this cast aluminium spare upper portion, and the lower part that should move the sword is fixed with a pendulum gear, this pendulum gear and this drive spur gear meshing, and, the left side of this cast aluminium spare is fixed with a apron, from left side to right, a left bearing packing ring, a plane bearing, a right bearing packing ring, this bevel pinion centre gripping are between this apron and the left surface of this cast aluminium spare.

The driving straight gear is sleeved and fixed on a connecting shaft, the connecting shaft penetrates through the aluminum casting leftwards, and the big bevel gear is sleeved and fixed on the connecting shaft.

The middle part of the aluminum casting is provided with a through channel, the lower opening of the through channel extends to the lower side face of the aluminum casting, the upper end part of the through channel is provided with a notch extending to the left side face of the middle part of the aluminum casting, and after the small bevel gear penetrates into the through channel from bottom to top, the lower bevel gear is meshed with the big bevel gear.

The power output shaft of the motor is in power connection with the power input end of a planetary reducer, and the bevel pinion is fixed on the power output end of the planetary reducer.

After adopting the structure, compared with the prior art, the invention has the advantages that: the operation is smoother and the working efficiency is higher. The plane bearing is arranged on the side of the big bevel gear, so that the friction resistance of the big bevel gear is small, and the high-efficiency electric scissors can rotate smoothly. Meanwhile, the large bevel gear and the driving straight gear are coaxially arranged but are respectively arranged on the left side and the right side of the aluminum casting, so that the torque transmission is relatively balanced. Therefore, the electric scissors are ensured to run smoothly, and the working efficiency is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples:

fig. 1 is an exploded perspective view of an embodiment of the present invention.

Detailed Description

Example, see figure 1: the high-efficiency electric scissors comprise a shell 10, a fixed knife 21 and a movable knife 22. The housing 10 may be of a two-piece construction and secured together by screws to form a housing having an internal cavity. After the fixed knife 21 is fixed, no motion such as swinging or the like is generated relative to the housing 10, and the movable knife 22 can generate reciprocating swinging relative to the fixed knife 21 and then forms shearing motion with the fixed knife 21. The movable blade 22 is connected to a motor 40 through a transmission mechanism 3, and the motor 40 is electrically connected to a power source (not shown) through a trigger system 70, wherein the power source may be a rechargeable battery such as a lithium battery pack, or an external power source. The trigger system 70 is a switch with a trigger, which is of a relatively conventional construction. For example, the trigger system 70 includes a trigger having a central portion directly or indirectly pivoted to the housing 10, a magnet disposed at one end of the trigger, and a hall sensor plate directly or indirectly fixed to the housing 10. Meanwhile, a plurality of Hall sensing points which can be matched with the magnets are arranged on the Hall sensing plate, and the Hall sensing points are in signal connection with the motor. That is, after the trigger is pulled, the magnet moves to trigger different hall sensing points, and finally the motor 40 is started, turned off, rotated forward or rotated backward.

Further speaking:

the transmission mechanism comprises a small bevel gear 31 which is connected with the motor 40 in a power mode, a large bevel gear 32 which is matched with the small bevel gear 31, and a driving straight gear 33 which is coaxially fixed with the large bevel gear 32. That is, when the motor 40 rotates, the bevel pinion 31 rotates the bevel gear 32, and finally the spur gear 33 rotates. Wherein, the axes of the small bevel gear 31 and the big bevel gear 32 are perpendicular to each other, thereby realizing the change of the torque direction. Meanwhile, an aluminum casting 11 is fixed in the housing 10. The middle part of the movable blade 22 is pivoted to the upper part of the aluminum casting 11, and a swing gear 221 is fixed at the lower part of the movable blade 22, and the swing gear 221 is meshed with the driving spur gear 33. That is, after the driving spur gear 33 is repeatedly rotated, the movable knife 22 is driven by the swing gear 221 to reciprocally swing, thereby performing a shearing operation with the fixed knife 21. The stationary blade 21 may also be fixed to the aluminum casting 11. And a cover plate 12 is fixed on the left side of the aluminum casting 11, and a containing cavity is inevitably formed between the cover plate 12 and the left side surface of the aluminum casting 11. From left to right, a left bearing washer 51, a flat bearing 52, a right bearing washer 53, the bull bevel gear 32 are sandwiched between the cover plate 12 and the left side face of the cast aluminum member 11. Thus, the friction force between the components is small through the introduction of the plane bearing 52, and the working efficiency of the electric scissors is improved.

Optimizing:

the driving spur gear 33 is sleeved and fixed on a connecting shaft 34, after the connecting shaft 34 passes through the aluminum casting 11 leftwards, the bevel gear 32 is sleeved and fixed on the connecting shaft 34. Of course, the aluminum casting 11 is provided with a through hole for the connecting shaft 34 to pass through, and the connecting shaft 34 is inevitably provided with a step for limiting. Therefore, the structure of the product is more compact, and the torque transmission is smoother.

The middle of the aluminum casting 11 is provided with a through channel 111 whose lower opening extends to the lower side of the aluminum casting 11, and the upper end of the through channel 111 is provided with a notch (not shown in the figure) extending to the left side of the middle of the aluminum casting 11, and after the bevel pinion 31 penetrates into the through channel 111 from bottom to top, the bevel pinion 31 and the bevel pinion 32 are engaged at the notch. Namely, the product structure is more compact and reasonable.

And (4) continuing optimization:

the power output shaft of the motor 40 is power-connected to the power input end of a planetary reducer 60, and the bevel pinion 31 is fixed to the power output end of the planetary reducer 60. That is, the planetary reducer 60 converts the high rotation speed and low torque of the motor 40 into the low rotation speed and high torque, thereby further increasing the shearing force, avoiding the waste of the moment, and forming a large shearing force.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (4)

1. High-efficient electric scissors, including casing (10), stationary knife (21) and move sword (22), and should move sword (22) and pass through drive mechanism power connection to a motor (40), this motor (40) is connected to the power through trigger system (70) electricity, its characterized in that: the transmission mechanism comprises a small bevel gear (31) which is in power connection with the motor (40), a large bevel gear (32) which is matched with the small bevel gear (31), and a driving straight gear (33) which is coaxially fixed with the large bevel gear (32), meanwhile, an aluminum casting (11) is fixed in the shell (10), the middle part of the movable cutter (22) is pivoted on the upper part of the aluminum casting (11), a swing gear (221) is fixed on the lower part of the movable cutter (22), the swing gear (221) is meshed with the driving straight gear (33), a cover plate (12) is fixed on the left side of the aluminum casting (11), and a left bearing washer (51), a plane bearing (52), a right bearing washer (53) and the large bevel gear (32) are clamped between the cover plate (12) and the left side face of the aluminum casting (11) from left to right.

2. The efficient electric shears of claim 1, wherein: the driving straight gear (33) is sleeved and fixed on a connecting shaft (34), and after the connecting shaft (34) penetrates through the aluminum casting (11) leftwards, the big bevel gear (32) is sleeved and fixed on the connecting shaft (34).

3. The efficient electric shears of claim 1, wherein: the middle part of the aluminum casting (11) is provided with a through channel (111) with a lower opening extending to the lower side surface of the aluminum casting (11), the upper end part of the through channel (111) is provided with a notch extending to the left side surface of the middle part of the aluminum casting (11), and after the small bevel gear (31) penetrates into the through channel (111) from bottom to top, the small bevel gear (31) and the large bevel gear (32) are meshed.

4. The efficient electric shears of claim 1, wherein: the power output shaft of the motor (40) is in power connection with the power input end of a planetary reducer (60), and the small bevel gear (31) is fixed on the power output end of the planetary reducer (60).

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