CN213718841U

CN213718841U - Electric pruning shears

Info

Publication number: CN213718841U
Application number: CN202022798677.8U
Authority: CN
Inventors: 徐军桥
Original assignee: Shanghai C Mart Tools Co ltd
Current assignee: Shanghai C Mart Tools Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-20
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses an electric pruning shear, which comprises a shell and a motor, wherein the motor is sequentially connected with a reduction gearbox and a gear set, the gear set is connected with a cutter head component, the cutter head component comprises a blade support, a fixed blade and a movable blade, one end of the movable blade is integrally provided with a rack, the gear set comprises a first bevel gear connected with an output shaft of the reduction gearbox and a transmission part arranged on the blade support in a penetrating way, and the transmission part comprises a transmission shaft penetrating through the blade support, a second bevel gear arranged at one end of the transmission shaft and meshed with the first bevel gear and a cylindrical gear arranged at the other end of the transmission shaft and meshed with the rack; when the shearing machine works, a sheared object is placed on the fixed blade, and the motor drives the reduction gearbox and the gear set to enable the fixed blade and the movable blade to be folded to shear the object. This electronic pruning scissors simple structure, good heat dissipation, transmission stable in structure, wearing and tearing are little, and life is showing and is promoting.

Description

Electric pruning shears

Technical Field

The utility model relates to an electric tool technical field particularly, relates to an electronic pruning scissors.

Background

At present, with the continuous expansion of urban greening areas, green belts of parks, roads and public places are spread all over the country, and because the growth of greening plant branches needs to be frequently trimmed for orderly formation, electric pruning shears are increasingly applied, and the electric pruning shears are widely used as garden tools due to small and exquisite shapes and convenient carrying. The electric pruning shears comprise a pair of blades extending from a housing, one of the blades being fixedly mounted on the housing and the other blade being pivotally connected to a fixed blade and driven by a motor to oscillate back and forth. When the trigger is pulled, the motor rotates forwards to drive the movable blade to swing towards the fixed blade, so that branches are cut, and the blade edge is closed; when the trigger is loosened, the motor rotates reversely to drive the movable blade to swing towards the direction away from the fixed blade, the blade opening is opened, the motor and the gear set inside the existing electric pruning shears can generate heat and scald in the long-time use process, the existing electric pruning shears need to stop working to wait for the motor to work again after being cooled, and the service life of the pruning shears can be influenced for a long time.

To solve the above problem, the chinese utility model patent with patent number "2020201066882" discloses an electric pruning shear, including: casing and motor, the motor is fixed to be set up in the casing, and the heat dissipation gear is installed to the one end of motor, is provided with the air outlet that corresponds with the heat dissipation gear on the casing, and the other end of motor is connected with the reducing gear box, and the reducing gear box is connected with the gear train, and motor, reducing gear box and gear train formula design as an organic whole, gear train are connected with the tool bit subassembly, and the tool bit subassembly includes: the fixed blade is provided with a sawtooth part; when the shearing machine works, a sheared object is placed on the sawtooth part of the fixed blade, the motor drives the heat dissipation gear to work, and meanwhile the fixed blade and the movable blade are folded to shear the object through the driving reduction gearbox and the gear set. The utility model discloses an electronic pruning scissors has the heat dissipation function, but this electronic pruning scissors exists as follows not enough: 1. because the swing tooth linkage blade has high matching requirements on the movable blade and the fixed blade, if the blade is locked by the spiral threads too tightly, the frictional force resistance between the blades is large, so that the swing tooth is matched with the bevel tooth too tightly, heating and abrasion of each transmission part are caused, and if the lock is too loose, the swing tooth and the bevel tooth are loosened, and tooth breakage is caused; 2. the structure of the blade fixing frame is complex, the center deviation of the power output shaft and the blade main shaft is easily caused, the shaking of scissors is large in work, and therefore the shearing surface is uneven.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric pruning shear to overcome the above-mentioned not enough that exists among the prior art.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

an electric pruning shear comprises a shell and a motor, wherein the motor is fixedly arranged in the shell, the motor is connected with a reduction gearbox, the reduction gearbox is connected with a gear set, the gear set is connected with a cutter head assembly, the cutter head assembly comprises a blade support, a fixed blade fixedly arranged on the blade support and a movable blade movably arranged on the blade support, one end of the movable blade is integrally provided with a rack, the gear set comprises a first bevel gear connected with an output shaft of the reduction gearbox and a transmission piece penetrating through the blade support, the transmission piece comprises a transmission shaft penetrating through the blade support, a second bevel gear arranged at one end of the transmission shaft and meshed with the first bevel gear and a cylindrical gear arranged at the other end of the transmission shaft and meshed with the rack; when the shearing machine works, a sheared object is placed on the fixed blade, and the motor drives the reduction gearbox and the gear set to enable the fixed blade and the movable blade to be folded to shear the object.

Further, the shell comprises a tail seat cover, a holding cover and a cutter head cover, the motor, the reduction gearbox and the gear set are arranged in the holding cover, and the cutter head assembly is arranged in the cutter head cover.

Furthermore, the bottom of the holding cover is provided with a heat dissipation opening.

Furthermore, a transmission switch corresponding to the gear set is arranged on the holding cover and connected with and used for controlling the motor.

Further, the shape of the rack is fan-shaped.

The utility model has the advantages that: 1. the rack and the movable blade are integrally arranged, so that the breakage of the rotating and matching pin caused by improper assembly and matching in the prior art can be avoided; 2. the original swing tooth transmission is changed into the existing straight tooth transmission, and the fit clearance cannot be changed due to assembly, so that the heating teeth of the workpiece are prevented from cracking; 3. the transmission structure is changed into 90-degree umbrella-shaped straight tooth transmission, the structure is simpler, the processing precision is easy to control, thereby avoiding the shaking during shearing, and the shearing surface of the new structure is flat; 4. the blade teeth and the bevel teeth are stably matched, the friction resistance is small, and the work piece does not generate heat, so that the service life of the star gear and the bevel teeth is better prolonged and protected.

Drawings

FIG. 1 is a front view of an electric pruning shear according to an embodiment of the present invention;

FIG. 2 is a side view of an electric pruning shear according to an embodiment of the present invention;

fig. 3 is a schematic side view of the electric pruning shears according to the embodiment of the present invention;

fig. 4 is a schematic view of a part of the internal structure of the electric pruning shears according to the embodiment of the present invention.

Shown in the figure:

1-a shell; 2, a motor; 3-a reduction gearbox; 4-a blade holder; 5-fixing the blade; 6-moving blade; 7-a rack; 8-a first bevel gear; 9-a transmission shaft; 10-a second bevel gear; 11-cylindrical gear; 12-tail seat cover; 13-a grip cap; 14-a tool head cover; 15-a heat dissipation port; 16-transmission switch.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; 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 specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, an electric pruning shears according to an embodiment of the present invention comprises a housing 1 and a motor 2, the motor 2 is fixedly arranged in the shell 1, the motor 2 is connected with a reduction gearbox 3, the reduction gearbox 3 is connected with a gear set, the gear set is connected with a cutter head component, the cutter head component comprises a blade bracket 4, a fixed blade 5 fixedly arranged on the blade bracket 4 and a movable blade 6 movably arranged on the blade bracket 4, one end of the movable blade 6 is integrally provided with a rack 7, the gear set comprises a first bevel gear 8 connected with the output shaft of the reduction gearbox 3 and a transmission part arranged on the blade bracket 4 in a penetrating way, the transmission part comprises a transmission shaft 9 penetrating through the blade support 4, a second bevel gear 10 arranged at one end of the transmission shaft 9 and meshed with the first bevel gear 8, and a cylindrical gear 11 arranged at the other end of the transmission shaft 9 and meshed with the rack 7; when the shearing machine works, a sheared object is placed on the fixed blade 5, and the motor 2 drives the reduction gearbox 3 and the gear set to enable the fixed blade 5 and the movable blade 6 to be folded to shear the object.

In the embodiment, the housing 1 includes a tail cover 12, a holding cover 13 and a cutter head cover 14, the motor 2, the reduction box 3 and the gear set are disposed in the holding cover 13, and the cutter head assembly is disposed in the cutter head cover 14. Above-mentioned setting makes when pruning scissors internals or part damage, can correspond casing 1 and dismantle the installation and do not influence the installation setting of other spare parts, makes things convenient for dismouting and maintenance.

In this embodiment, the bottom of the grip cover 13 is provided with a heat dissipation opening 15. The heat dissipation port 15 improves the heat dissipation efficiency of the motor 2, ensures the normal use of the pruning shears, and improves the working efficiency of the pruning shears.

In this embodiment, the holding cover 13 is provided with a transmission switch 16 corresponding to the gear set, and the transmission switch 16 is connected to and controls the motor 2. The operation of the motor 2 is controlled by the drive switch 16 so that the user can conveniently operate and use the motor.

In the present embodiment, the rack 7 has a fan shape. The shape of the rack 7 is set to be fan-shaped, the moving track of the movable blade 6 is matched with the shape of the fan, the space of the pruning and pruning shear head part can be saved, and in addition, the moving arc line of the movable blade 6 is more attractive.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an electric pruning shears, its characterized in that, includes casing (1) and motor (2), motor (2) fixed set up in casing (1), motor (2) are connected with reducing gear box (3), reducing gear box (3) are connected with the gear train, the gear train is connected with the tool bit subassembly, the tool bit subassembly includes blade support (4), fixed stationary blade (5) and the activity that sets up on blade support (4) that set up on blade support (4) of blade support (4), the one end an organic whole of blade (6) is provided with rack (7), the gear train includes first bevel gear (8) with reducing gear box (3) output shaft and runs through the driving medium that sets up on blade support (4), the driving medium is including transmission shaft (9) that run through blade support (4), set up in second bevel gear (10) of transmission shaft (9) one end and first bevel gear (8) meshing and set up in transmission shaft (9) in addition A cylindrical gear (11) with one end engaged with the rack (7); when the shearing machine works, a sheared object is placed on the fixed blade (5), and the motor (2) drives the reduction gearbox (3) and the gear set to enable the fixed blade (5) and the movable blade (6) to be folded to shear the object.

2. The electric pruning shears according to claim 1, wherein the housing (1) comprises a tail cover (12), a holding cover (13) and a cutter head cover (14), the motor (2), the reduction gearbox (3) and the gear set are arranged in the holding cover (13), and the cutter head assembly is arranged in the cutter head cover (14).

3. The electric pruning shears according to claim 2, wherein the bottom of the grip cover (13) is provided with a heat sink (15).

4. The electric pruning shears according to claim 2, wherein the grip cover (13) is provided with a transmission switch (16) corresponding to the gear set, and the transmission switch (16) is connected with and controls the motor (2).

5. Electric pruning shears according to claim 1, wherein said toothed rack (7) is fan-shaped.