Handheld electric cutter

Abstract

The utility model discloses a handheld electric shearing device which comprises a handheld shell and a shearing assembly, and a motor is arranged in the handheld shell. The shearing assembly comprises a fixed blade and a rotary blade which are staggered inside and outside; the upper end of the fixed blade is provided with a transverse blade edge, the periphery of the rotary blade is provided with an annular blade edge, and the rotary blade is arranged above the fixed blade; the transverse blade edge and the annular blade edge part at the lower end of the rotary blade are close front and back to form a shearing interface; the motor drives the rotating blade to rotate, so that the annular blade edge and the transverse blade edge generate relative shearing motion, compared with the traditional design that two blades swing to open and close, the structure is simpler, and the reliability of the whole shearing structure is further ensured due to the stable rotating track.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of cutting appliance technical field, in particular to a kind of hand-held electric shears. BACKGROUND

[0002] With the development of science and technology, electric scissors have been widely used in agriculture, industry and daily life. Traditional electric scissors usually achieve shearing function through the swing of two hinged blades. However, the electric scissors in the prior art generally have the problem of complex structure, which requires high driving of the two blades and is prone to occlusion disorders, affecting shearing efficiency and safety.

[0003] The following are several electric scissors patents in the prior art, which solve some problems to some extent, but still have the above-mentioned shortcomings:

[0004] The CN222366674U patent discloses an electric scissors, including a casing, a switch trigger, a spring, a movement and a blade. Its innovation lies in the addition of a lock twist structure, which forms a double protection mechanism through mechanical limiting of the lock twist and the switch trigger, effectively preventing safety accidents caused by misoperation. However, this patent still relies on the traditional single blade swing structure, which requires high driving precision of the blade and is prone to occlusion disorders.

[0005] The CN222499789U patent discloses an electric scissors for clothing cutting, characterized by the wave sawtooth design of the fixed blade and the movable blade, and the setting of the oil tank. The wave sawtooth can increase the stability and fineness of cutting, and the oil tank solves the problem of adding lubricating oil. However, the blade driving method of this patent is still based on the traditional swing structure, which requires high driving precision and synchronization of the blade and is prone to occlusion disorders.

[0006] The CN222515653U patent discloses an electric scissors, including a first casing composed of an upper holder shell and a lower holder shell, and a second casing. The first movable blade and the second movable blade are opened or closed through the first driving assembly, and the second driving assembly provides power for the first driving assembly. This design improves the stability of driving through multi-stage gear transmission, but its core shearing principle is still based on the relative swing of the two blades, which has the potential problems of complex driving and occlusion disorders.

[0007] Although the above-mentioned patents have improved in safety, stability and operation convenience, the electric scissors of the prior art generally adopt the swing of two hinged blades to realize the shearing function, which not only has a complex structure itself, but also needs a complex transmission mechanism to drive the swing of the two blades, further increasing the complexity and manufacturing cost of the equipment. In addition, the synchronization of the two blades requires extremely high, and once there is a deviation, it is easy to cause occlusion obstacles, affecting the shearing efficiency. It can be seen that the complex driving structure and high precision requirement make the equipment prone to failure during long-term use, reducing the service life. Utility model content

[0008] The technical problem to be solved by the utility model is to provide a handheld electric shear with simplified structure and better stability.

[0009] The utility model adopts the technical scheme that the handheld electric shear solves the above-mentioned technical problem, comprising a handheld shell and a shearing assembly, the handheld shell is internally provided with a motor, the shearing assembly comprises an inner-outer staggered fixed blade and rotating blade, the upper end of the fixed blade is provided with a transverse blade edge, the outer periphery of the rotating blade is provided with an annular blade edge, the rotating blade is arranged above the fixed blade, the transverse blade edge and the annular blade edge part of the lower end of the rotating blade are close to each other in front and back to form a shearing interface, and the motor drives the rotating blade to rotate, so that the annular blade edge and the transverse blade edge generate relative shearing motion.

[0010] The preferred technical scheme that the utility model solves the above-mentioned technical problem is that the front end of the handheld shell is provided with a side extension, and the shearing assembly is arranged in the lateral direction of the side extension.

[0011] The preferred technical scheme that the utility model solves the above-mentioned technical problem is that the rotating blade is in a polygonal structure, the annular blade edge is composed of a plurality of continuous straight blade edges, and the included angle α of adjacent straight blade edges satisfies 120 ° < α < 180 °.

[0012] The preferred technical scheme that the utility model solves the above-mentioned technical problem is that the utility model further comprises a lower supporting piece, the fixed blade is fixed on the lower supporting piece, the front end of the lower supporting piece is provided with a forward downward inclined guide slope, and the tail end of the guide slope extends to the outside of the rotating track of the rotating blade.

[0013] The preferred technical scheme that the utility model solves the above-mentioned technical problem is that the lower supporting piece comprises a vertical wall and a bent wall, the bent wall is bent away from the rotating blade from the bottom of the vertical wall, forming a material supporting structure with a pushing surface.

[0014] The utility model discloses a preferred technical scheme for solving the above technical problems, and the front end of the handheld shell is provided with an arc-shaped protective cover, and the protective edge of the arc-shaped protective cover is located on the outside of the annular blade edge of the rotary blade and keeps a distance from the annular blade edge of the rotary blade.

[0015] The utility model discloses a preferred technical scheme for solving the above technical problems, and the close distance d between the transverse blade edge and the annular blade edge satisfies 0.05mm≤d≤0.3mm.

[0016] The utility model discloses a preferred technical scheme for solving the above technical problems, and the front end face of the handheld shell is a circular arc transition surface, and the circular arc transition surface is integrated with an illumination module.

[0017] The utility model discloses a preferred technical scheme for solving the above technical problems, and the handheld electric shear cutter comprises a handheld shell and a shearing assembly, and the handheld shell is provided with a motor.

[0018] The front end of the handheld shell is provided with a side extension, and the shearing assembly is arranged in the lateral direction of the side extension; the shearing assembly comprises a fixed blade and a rotary blade arranged in a staggered manner; the upper end of the fixed blade is provided with a transverse blade edge, the outer periphery of the rotary blade is provided with an annular blade edge, and the rotary blade is arranged above the fixed blade;

[0019] The rotary blade has a polygonal structure, and the annular blade edge is composed of a plurality of continuous straight blade edges, and the included angle α of adjacent straight blade edges satisfies 120°<α<180°.

[0020] The transverse blade edge and the annular blade edge part of the lower end of the rotary blade are close to each other in front and back to form a shearing interface.

[0021] The motor drives the rotary blade to rotate, so that the annular blade edge and the transverse blade edge produce relative shearing motion.

[0022] The utility model discloses a preferred technical scheme for solving the above technical problems, and further comprises a lower supporting member and an arc-shaped protective cover, and the lower supporting member and the arc-shaped protective cover wrap the fixed blade and the rotary blade.

[0023] The lower supporting member comprises a vertical wall and a bent wall, the fixed blade is fixed on the vertical wall, the front end of the vertical wall is provided with a guide inclined surface inclined forward and downward, and the end of the guide inclined surface extends to the outside of the rotary track of the rotary blade.

[0024] The bent wall is bent from the bottom of the vertical wall to the direction away from the rotary blade, forming a material supporting structure with a pushing surface.

[0025] The arc-shaped protective cover is located above the rotary blade, and a protective rim of the arc-shaped protective cover is located outside the annular knife edge of the rotary blade.

[0026] Compared with the prior art, the utility model has the advantages that: the motor drives the rotary blade to rotate, so that the annular knife edge and the transverse knife edge produce relative shearing motion, realizing shearing of the sheared object; compared with the traditional design of two blades swinging and opening and closing, the structure is simpler, and because the rotation track is stable, the reliability of the whole shearing structure is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be further described in detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0028] Figure 1 Three-dimensional structure of hand-held electric shear Figure 1 ;

[0029] Figure 2 Three-dimensional structure of hand-held electric shear Figure 2 ;

[0030] Figure 3 Exploded view of hand-held electric shear Figure 1 ;

[0031] Figure 4 Exploded view of hand-held electric shear Figure 2 . DETAILED DESCRIPTION

[0032] The preferred embodiments of the utility model will be described in detail below with reference to the drawings. Those skilled in the art will appreciate that these descriptions are only descriptive, exemplary, and should not be interpreted as limiting the protection scope of the utility model.

[0033] It should be noted that: similar reference numerals represent similar items in the following drawings, so once an item is defined in one drawing, it will not be further defined and explained in the subsequent drawings.

[0034] In the description of the utility model, it needs to explain, the terms "upper", "lower", "front", "back", "left", "right", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, or is the orientation or position relation of the utility model product when using commonly, just is for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the restriction of the utility model of indicating or implying the device or element must have a particular orientation, constructs and operates with a particular orientation, therefore cannot be understood as the restriction of the utility model.

[0035] As Figures 1-4 The utility model provides a handheld electric shear, it includes handheld casing 1 and shear assembly, be equipped with motor 2 in handheld casing 1.Shear assembly includes the fixed blade 4 and rotary blade 5 of inside and outside staggered arrangement, the upper end of fixed blade 4 is equipped with horizontal knife edge 41, the outer periphery of rotary blade 5 is equipped with annular knife edge 51, and rotary blade 5 is set up in fixed blade 4 upper.The horizontal knife edge 41 and the annular knife edge 51 part of rotary blade 5 lower end are close to each other and form the shear interface.Forming shear interface.The motor 2 drives rotary blade 5 rotation, makes the relative shear movement of annular knife edge 51 and horizontal knife edge 41, realizes the shear of the shear object.Compared with the design of traditional two blade swing opening and closing, the structure of the utility model is simple, and it is more easy to realize through ordinary transmission structure.Moreover, because the rotation trajectory is stable, further ensure the reliability of the whole shear structure.

[0036] Preferably, as Figures 1-4 The handheld casing 1 length direction extends, and the front end of the handheld casing 1 is provided with a side extension 11, and the shear assembly is arranged in the lateral direction of the side extension 11, so that the specific state of the shear area is more easily observed by the operator during operation, and at the same time, the operator's hands are away from the shear area, thereby reducing the risk of accidental injury.

[0037] Further preferably, as Figure 1 The handheld casing 1 is provided with an operation button 9 for controlling the motor 2, and the operation button 9 is located on one side of the side extension 11 to adapt to ergonomics.

[0038] Preferably, the inner-outer spacing between the horizontal knife edge 41 and the annular knife edge 51 at the lower end of the rotary blade 5 is 0.05-0.3 mm, which ensures the close cooperation between the blades during the shearing process, guarantees the shearing, avoids pulling or residual, and also avoids material jamming, while reducing blade wear and prolonging service life.

[0039] As Figures 2-3As shown, the rotary blade 5 is in a polygonal structure, and the annular blade edge 51 is composed of a plurality of continuous straight blade edges g, and the included angle a of adjacent straight blade edges g satisfies: 120° < a < 180°. The engagement of the straight blade edge g and the transverse blade edge 41 simulates the most common scissors configuration in life, and at the same time, the blade edge surface of the annular blade edge 51 and the transverse blade edge 41 are opposite, simulating the common flat mouth scissors in life, and the shearing effect is more accurate, which can adapt to the shearing needs of various materials. The included angle design of the straight blade edge g ensures the shearing degree.

[0040] Further preferably, the rotary blade 5 is in a regular polygonal structure, and in this embodiment, it is in a regular decagonal structure, so that the rotary blade 5 can more evenly distribute the shearing force during shearing, improve the shearing efficiency, and at the same time, reduce the problem of incomplete shearing caused by irregular blade shape.

[0041] As shown, Figures 1-4 The handheld electric shear includes a lower support 6, and the lower support 6 includes a vertical wall 61 and a bent wall 62. The fixed blade 4 is fixed on the vertical wall 61, and the bent wall 62 is bent from the bottom of the vertical wall 61 to the direction away from the rotary blade 5, forming a material support structure with a pushing surface, which provides a continuous support force to the material during the cutting operation, facilitates the cutting operation, makes the operation more labor-saving, and at the same time, prevents the material from deviating, which is beneficial to maintaining the stability of the cutting track. The fixed blade 4 is arranged on the inner side of the vertical wall 61, and the vertical wall 61 at the corresponding position of the fixed blade 4 is provided with a notch 63, and the lower end of the rotary blade 5 is located in the notch 63. The vertical wall 61 provides a mounting seat for the fixed blade 4, and at the same time, plays a role in protecting the rotary blade 5, avoiding external collision damage to the blade.

[0042] As shown, Figures 2-3 The front end of the vertical wall 61 is provided with a guide inclined surface 64 inclined forward and downward, and the end of the guide inclined surface 64 extends to the outside of the rotary track of the rotary blade 5, so as to guide the shearing object into the shearing area between the fixed blade 4 and the rotary blade 5, thereby improving the convenience and accuracy of cutting.

[0043] Preferably, the fixed blade 4 is detachably connected to the vertical wall 61, thereby facilitating disassembly and replacement. Preferably, the notch 63 is provided with a mounting wall at the corresponding position, and the mounting wall is provided with a groove matched with the fixed blade. The fixed blade 4 is fixed in the groove through a fastener, and the transverse blade edge exceeds the upper edge of the mounting wall.

[0044] Preferably, the rotary blade 5 is detachably clamped on the rotating shaft, thereby facilitating disassembly and replacement.

[0045] As shown, Figures 3-4As shown, the end face of the side extension 11 is a vertical face 111, the rear side of the vertical wall 61 extends upwardly to a connecting wall 65, the connecting wall 65 is used to connect the handheld housing 1, the connecting wall 65 extends upwardly and the edge is spaced apart from the annular blade edge 51 of the rotary blade 5 by a distance. The upper section of the connecting wall 65 is provided with an inwardly bent connecting lug k, the connecting lug is clamped with the handheld housing 1, and the connecting wall 65 is tightly connected with the side wall of the handheld housing 1. This double-reinforced connection mode suppresses shear vibration, avoids the falling of the lower support 6, and improves the operation safety.

[0046] As shown in the drawings, Figures 1-4 The front end of the handheld housing 1 is provided with an arc-shaped protective cover 7, and the protective rim of the arc-shaped protective cover 7 is located outside the annular blade edge 51 of the rotary blade 5 and is spaced apart from the annular blade edge 51 of the rotary blade 5. The arc-shaped protective cover 7 covers the blade rotation area to avoid the risk of hand injury during shearing and the safety hazard of other substances being involved in the shearing area, and can also avoid the splashing of impurities generated during shearing. Preferably, the arc-shaped protective cover 7 is buckle-connected with the handheld housing 1, so as to facilitate disassembly and maintenance of the blade.

[0047] As shown in the drawings, Figure 1 , 3 The front end face of the handheld housing 1 is a circular arc transition surface 102, and the circular arc transition surface 102 is integrated with a lighting module 10. Preferably, the optical axis of the lighting module 10 forms a depression angle of 10°-30° with the shearing interface, which provides good lighting effect, improves operation visibility, improves fabric edge alignment accuracy, and facilitates user operation in insufficient light environment.

[0048] As shown in the drawings, Figure 4 The motor 2 is arranged in the handheld housing 1 in the front-rear direction, and the rear side of the handheld housing 1 is provided with a battery compartment extending in the front-rear direction. The battery compartment is used to accommodate a battery 3 for providing power support. The output shaft of the motor 2 is connected with the rotating shaft of the rotary blade 5 through a gear transmission assembly 8 to drive the rotary blade 5 to rotate. This design optimizes the distribution of gravity center, reduces fatigue during long-time operation, and at the same time, the structure is compact, so that the whole handheld electric shear has small size and is convenient to carry and use.

[0049] The handheld electric shear provided by the utility model is introduced, and the principle and implementation mode of the utility model are described by applying specific examples. The above description of the embodiments is only used to help understand the utility model and the core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1.A hand-held electric shearing device, characterized in that: it comprises a hand-held housing and a shearing assembly, and a motor is arranged in the hand-held housing; the shearing assembly comprises a fixed blade and a rotary blade arranged in a staggered manner, the fixed blade is provided with a horizontal blade edge at its upper end, the rotary blade is provided with an annular blade edge at its outer periphery, and the rotary blade is arranged above the fixed blade; the horizontal blade edge and the annular blade edge of the rotary blade at its lower end are close to each other to form a shearing interface; and the motor drives the rotary blade to rotate, so that the annular blade edge and the horizontal blade edge produce relative shearing motion. 2.The hand-held electric shearing device according to claim 1, characterized in that: the front end of the hand-held housing is provided with a side extension, and the shearing assembly is arranged in a lateral direction of the side extension. 3.The hand-held electric shearing device according to claim 1, characterized in that: the rotary blade has a polygonal structure, the annular blade edge is composed of a plurality of continuous straight blade edges, and the included angle α between adjacent straight blade edges satisfies 120°<α<180°. 4.The hand-held electric shearing device according to claim 1, characterized in that: it further comprises a lower support, the fixed blade is fixed to the lower support, the front end of the lower support is provided with a downwardly inclined guide slope, and the end of the guide slope extends to the outside of the rotary track of the rotary blade. 5.The hand-held electric shearing device according to claim 4, characterized in that: the lower support comprises a vertical wall and a bent wall, the bent wall is bent away from the rotary blade from the bottom of the vertical wall to form a material supporting structure with a pushing surface. 6.The hand-held electric shearing device according to claim 1, characterized in that: the front end of the hand-held housing is provided with an arc-shaped protective cover, and the protective edge of the arc-shaped protective cover is located outside the annular blade edge of the rotary blade and maintains a distance with the annular blade edge of the rotary blade. 7.The hand-held electric shearing device according to claim 1, characterized in that: the close distance d between the horizontal blade edge and the annular blade edge satisfies 0.05mm≤d≤0.3mm. 8.The hand-held electric shearing device according to claim 1, characterized in that: the front end surface of the hand-held housing is a circular arc transition surface, and a lighting module is integrated on the circular arc transition surface. 9.A hand-held electric shearing device, characterized in that: it comprises a hand-held housing and a shearing assembly, and a motor is arranged in the hand-held housing; the front end of the hand-held housing is provided with a side extension, and the shearing assembly is arranged in a lateral direction of the side extension; the shearing assembly comprises a fixed blade and a rotary blade arranged in a staggered manner; the fixed blade is provided with a horizontal blade edge at its upper end, the rotary blade is provided with an annular blade edge at its outer periphery, and the rotary blade is arranged above the fixed blade; the rotary blade has a polygonal structure, the annular blade edge is composed of a plurality of continuous straight blade edges, and the included angle α between adjacent straight blade edges satisfies 120°<α<180°; the horizontal blade edge and the annular blade edge of the rotary blade at its lower end are close to each other to form a shearing interface; and the motor drives the rotary blade to rotate, so that the annular blade edge and the horizontal blade edge produce relative shearing motion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 10. The hand-held electric shear according to claim 9, wherein: a lower supporting member and an arc-shaped protective cover are further included, and the lower supporting member and the arc-shaped protective cover wrap the fixed blade and the rotary blade; the lower supporting member includes a vertical wall and a bent wall, the fixed blade is fixed on the vertical wall, a forward and downward inclined guide slope is arranged at the front end of the vertical wall, and the end of the guide slope extends to the outside of the rotary track of the rotary blade; the bent wall is bent from the bottom of the vertical wall to the direction away from the rotary blade, so as to form a material supporting structure with a pushing surface; the arc-shaped protective cover is located above the rotary blade, and the protective edge of the arc-shaped protective cover is located outside the annular blade edge of the rotary blade.

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