CN220463971U - Driving structure of reciprocating cutting tool bit - Google Patents

Abstract

The utility model provides a reciprocating cutter head's drive structure, including the motor, by the rotatory rotary platform of motor drive, be located rotary platform top parallel arrangement's a plurality of drive frame, drive frame integrated into one piece including rocking frame, actuating head, it is equipped with two atress pieces respectively to sway both ends bottom, two adjacent rocking frames set up in opposite directions on reciprocating motion direction, rotary platform on have and be annular array at least four and be even number's effect position, the effect is corresponding with the stress piece off-axis distance for off-axis distance, all set firmly an effect piece on every effect position, effect piece include first effect piece and second effect piece, first effect piece and second effect piece alternate on rotary platform, adjacent two rocking frames are symmetrical and opposite on the stroke. The magnetic driving structure is brought to the multi-cutter cutting head, so that the whole machine can be really washed, and the cutter head can be balanced in the reciprocating direction, so that noise and vibration are greatly reduced.

Description

Driving structure of reciprocating cutting tool bit

Technical Field

The utility model relates to a personal care electric appliance, in particular to a swinging structure for power transmission of a multi-knife reciprocating cutting head.

Background

Conventional electric shavers, especially reciprocating electric shavers, have a driving frame driven to vibrate by a motor eccentrically and reciprocally via an eccentric wheel, and are driven to a cutter head by a driving shaft on the driving frame. The electric shaver head has the advantages that the eccentric loss is caused, the motor load is large, the vibration frequency cannot be improved, meanwhile, the driving frame occupies a large volume, the disassembly and the assembly are complex, the whole shaver head cannot be miniaturized, certain difficulty is brought to cleaning and maintenance, and the general reciprocating electric shaver head is fixedly installed due to the relation of the power structure, so that the modeling and the whole aesthetic feeling of the reciprocating electric shaver are limited. In particular, the cutter head and the cutter body are in penetrating connection through the transmission shaft, namely, the cutter head and the cutter body cannot be sealed due to transmission, and the actual washing of the whole machine cannot be realized. The sealing piece is used for sealing the transmission port as the water washable device, but the sealing piece has the problems of easy aging, displacement and the like, so that water seepage is caused.

Disclosure of Invention

The utility model provides a novel and efficient driving structure of a reciprocating cutting tool bit.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a drive structure of reciprocating cutting tool bit, includes the motor, by the rotary platform of motor drive rotation, be located a plurality of actuating rack of rotary platform top parallel arrangement, actuating rack integrated into one piece including reciprocating motion direction extension be rectangular formula swing frame, arrange in swing frame center and with the actuating head of movable knife subassembly adaptation drive connection, swing frame long central point put by the cross axle traverse fixed formation side-to-side rocking fulcrum, swing frame along the long both ends bottom of frame be equipped with two atress pieces respectively, two atress pieces are the first magnetic piece of swing frame long one end bottom, the long other end symmetry position bottom of frame just can be by the magnetic attraction piece of magnetic attraction or with the second magnetic piece of first magnetic piece hetero magnetism, in reciprocating motion direction adjacent two swing frames opposite setting, rotary platform on have and be annular array at least four and be even number's action position, the action is off-axis distance and the stress piece is corresponding with the off-axis distance, each action piece on all set firmly the action piece includes first action piece and second action piece on the side-axis of action piece and second action piece, the second action piece is the first action piece of second action piece and the second action piece on the second side-to be the opposite action piece, the second action piece is the magnetic attraction piece is the second magnetic piece of the opposite to the second action piece, the first action piece is the second action piece of the second action piece with the second action piece of rotating platform and the second action piece has the second action piece.

As an improvement: the number of the driving frames is even.

As an improvement: and a space is arranged between two adjacent action positions on the rotating platform.

As an improvement: the distance between two adjacent first acting pieces on the rotating platform is the same as the distance between the same direction ends of two adjacent driving frames.

The beneficial effects provided by the utility model are as follows: the magnetic force is adopted to drive the driving frame to drive the movable cutter assembly to reciprocate, the motor is used for driving the platform surface below the driving frame to rotate, an eccentric structure is not needed, namely, no eccentric loss is caused, the motor is directly driven to rotate, the technology sense is greatly improved by the magnetic force, the direction conversion is not caused, the influence of the load pressure of the cutter head surface is avoided, the current change of the motor is small, and the motor is basically in a straight line. The acting force is magnetic force, namely magnetic suspension is arranged between the two ends of the driving frame and the rotating platform, the size and frequency of the acting force can be adjusted through the magnetic strength of the stress block and the acting piece and the number of acting positions, the adjusting area is large, and the driving mode that the reciprocating type eccentric driving can only be realized is broken. Meanwhile, the driving frame only needs to be coaxial above the rotating platform, and the connecting angle limit is avoided on the horizontal plane, namely, the driving frame can be connected and installed in a 360-degree rotating inserting mode, and the whole machine, particularly the cutter head, has higher freedom and flexibility. The utility model brings a magnetic driving structure for the multi-cutter set cutting tool bit, breaks through the direct drive transmission barrier of the transmission shaft, can be directly sealed between the cutting tool bit and the tool body, and has no leakage of the electric connection part, so that the whole machine can be washed in a real sense, and the driving force adjustment degree is large. As the number of the action blocks on the rotary platform is even, the kinds of the action blocks which are simultaneously acted on the two ends of the swinging frame are the same. When the swinging frame is at the action position with the first action part, the end of the swinging frame with the first magnetic block forms repulsive force due to the repulsion of the like poles, and the other end of the swinging frame with the non-magnetic attraction block or the second magnetic block is provided with attraction force to the first action part at the corresponding position of the rotating platform, the end swings downwards, and the driving head deflects towards the end direction, so that the driving frame drives the movable knife assembly to move towards the end direction; when the swinging frame is at the action position with the second action part, the swinging frame is provided with a first magnetic block end and a second action part which can generate attraction force, and the second action part at the corresponding position of the rotating platform is provided with a non-magnetic attraction block or a second magnetic block end, so that the swinging frame is caused to swing downwards towards the first magnetic block end, and the driving head is also deflected towards the end direction, thereby realizing that the driving frame drives the movable knife assembly to move towards the end direction. Moreover, because the cutter head is provided with an even number of driving frames, and the adjacent driving frames are symmetrically opposite, the cutter head can be balanced in the reciprocating direction, and the noise and the vibration are greatly reduced.

The utility model is described in further detail below with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic view of an embodiment of a driving structure of a reciprocating cutter head according to the present utility model.

Detailed Description

As shown in fig. 1, an embodiment of a driving structure of a reciprocating cutter head according to the present utility model includes a motor, a rotary platform 1 driven by the motor to rotate, and two driving frames 2 arranged in parallel above the rotary platform 1, where, of course, if a corresponding number of driving frames can be provided for multiple cutters, the number is preferably two for achieving higher balance. The driving frame 2 is integrally formed and comprises a swinging frame 21 which extends in a strip shape in the reciprocating motion direction and a driving head 28 which is arranged on the center of the swinging frame 21 and is in driving connection with the moving knife assembly in an adapting mode, a central transverse through hole 27 is formed in the long center of the swinging frame 21 for a transverse shaft (marked in the figure) to transversely penetrate and fix to form a supporting point capable of swinging left and right, and the two swinging frames share the transverse shaft, so that the swinging frame has better synchronism and stability. Two stress blocks are respectively arranged at the bottoms of two ends of each swing frame 21 along the length of the frame, and the two stress blocks are respectively a first magnetic block 22 at the bottom of one end of the length of the swing frame 21, and a second magnetic block 24 at the bottom of the symmetrical position of the other end of the length of the frame and different from the first magnetic block 22. The two adjacent swinging frames 21 are oppositely arranged in the reciprocating motion direction, the rotating platform is provided with at least four action positions which are in an annular array and are even in number, the action positions are used for being corresponding to the off-axis distances of the stress blocks, each action position is fixedly provided with an action part, each action part comprises a first action part 11 and a second action part 12, the action parts arranged on the two adjacent action positions are respectively a first action part 11 which is matched with the first magnetic block 22 and can generate repulsive acting force and a second action part 12 which is same with the second magnetic block 24 and is magnetic, the first action part 11 and the second action part 12 are alternately arranged on the rotating platform, the two adjacent swinging frames 21 are symmetrical and opposite in stroke, and along with the rotation of the rotating platform, the two ends of the swinging frames 21 swing around the axis under the acting force of the first action part or the second action part, so as to bring reciprocating power to the moving knife assembly. As the number of the action blocks on the rotary platform is even, the kinds of the action blocks which are simultaneously acted on the two ends of the swinging frame are the same.

The specific activity states are: when a first acting piece on the same diameter of the rotary platform is abutted against two ends of the driving frame, the ends of a first magnetic block of the swinging frame are repulsive due to the repulsion of the same polarity, a second magnetic block at the other end of the swinging frame is opposite to the first acting piece to form attractive force, the swinging frame swings downwards towards the end where the second magnetic block is arranged due to the two forces, and the driving head deflects towards the end, so that the driving frame drives the movable knife assembly to move towards the end, meanwhile, the adjacent swinging frames are oppositely arranged, the two ends of the adjacent driving frame swinging frames are also correspondingly provided with the first acting piece, and the deflection of the adjacent driving frames is opposite; the two ends of the swinging frame are butted at the positions of the second acting parts on the same diameter of the rotary platform, the swinging frame is provided with the first magnetic block ends and the butted second acting parts can generate attractive force, and the ends of the second magnetic block ends of the swinging frame and the second acting parts on the corresponding positions of the rotary platform are repulsive force formed by the homopolar repulsion, so that the swinging frame swings downwards towards the first magnetic block ends, the driving heads deflect towards the end direction, and the adjacent driving frames drive the movable knife assemblies to move towards the end direction. Meanwhile, the adjacent swinging frames are arranged oppositely, two ends of the adjacent driving frame swinging frames are also correspondingly provided with second acting pieces, and the deflection of the adjacent driving frames is opposite. The first acting piece and the second acting piece are alternately and annularly arranged on the rotary platform, and the two sides repeatedly switch the movement direction along with the rotation of the rotary platform, so that the driving frame can repeatedly swing. In order to ensure synchronous switching, the distance between two adjacent first acting pieces on the rotary platform is the same as the distance between the same-direction ends of two adjacent driving frames 2. The two adjacent driving frames are synchronous in opposite processes and symmetry, so that the deviation can be balanced in the reciprocating direction for the cutter head, the noise reduction and vibration reduction effects are greatly realized, and the motor efficiency is improved.

The second magnetic block is symmetrically arranged with the first magnetic block 22 in this embodiment, and the second acting block and the second magnetic block 24 are in the same magnetism, i.e. the two ends of the driving frame are stressed simultaneously, the force directions are opposite, and the swinging force is sufficient and the stability is excellent. Of course, the second magnetic block symmetrically arranged with the first magnetic block 22 can be changed into a metal magnetic attraction block which can be magnetically attracted, namely a non-magnetic metal piece, the second acting piece 12 is correspondingly arranged into a non-magnetic metal piece, the driving frame is stressed on one side, and the swinging can be realized,

although the present utility model has been described with reference to the above embodiments, it should be understood that the utility model is not limited thereto, but may be modified and altered somewhat by those skilled in the art without departing from the spirit and scope of the present utility model, and the scope of the utility model is therefore to be limited only by the scope of the appended claims.

Claims (5)

1. A drive structure of a reciprocating cutter head, characterized in that: comprises a motor, a rotary platform (1) driven by the motor to rotate, a plurality of driving frames (2) arranged in parallel above the rotary platform (1), wherein the driving frames (2) are integrally formed and comprise a swinging frame (21) which extends in a strip shape in the reciprocating direction, a driving head (28) which is arranged on the center of the swinging frame (21) and is in adaptive driving connection with a movable cutter component, the long center position of the swinging frame (21) is transversely fixed by a transverse shaft to form a left-right swinging fulcrum, two stressed blocks are respectively arranged at the bottoms of two ends of the swinging frame (21) along the length of the frame, the two stressed blocks are respectively magnetic blocks (22) at the bottoms of one end of the swinging frame (21) which are at the bottom of the long end of the frame, the bottom of the other end of the frame is symmetrical in the reciprocating direction, or a second magnetic block (24) which is different in magnetism from the first magnetic block (22), the two adjacent swinging frames (21) are oppositely arranged in the reciprocating direction, the rotary platform is provided with at least four annular array and even acting positions, the acting positions are opposite to each acting position, the acting position is opposite to the acting position is an acting position, and the acting position is opposite to the acting position (12, the second acting piece (12) is a non-magnetic metal piece which is same with the second magnetic block (24) or corresponds to the magnetic attraction block, the first acting piece (11) and the second acting piece (12) are alternately arranged on the rotary platform, and two adjacent swinging frames (21) are symmetrical and opposite in stroke.

2. The drive structure of a reciprocating cutter head according to claim 1, wherein: the number of the driving frames (2) is even.

3. A driving structure of a reciprocating cutter head according to claim 1 or 2, characterized in that: and a space is arranged between two adjacent action positions on the rotating platform.

4. A driving structure of a reciprocating cutter head according to claim 1 or 2, characterized in that: the distance between two adjacent first acting parts on the rotating platform is the same as the distance between the same direction ends of two adjacent driving frames (2).

5. A driving structure of a reciprocating cutter head according to claim 3, characterized in that: the distance between two adjacent first acting parts on the rotating platform is the same as the distance between the same direction ends of two adjacent driving frames (2).