TWM586203U - Separate type flexible spindle rotary cutter device - Google Patents

Abstract

A separate soft-shaft rotary blade device includes a driving unit and a rotary blade unit. The driving unit includes a motor and a coupling connected to the motor. The rotary blade unit includes a transmission connected to the coupling, a cutter that can be driven to rotate by the transmission, and a control module disposed on the transmission and electrically connected to the motor and operable by a user. The transmission has a first transmission member, and a second transmission member pivotally disposed in the casing, one end of which is linked with the first transmission member, and the other end is provided for the cutter. The first transmission member has a first screw portion adjacent to the second transmission member, and the second transmission member has a second screw portion engaged with the first screw portion, and can be directly formed through a mechanism of mutual engagement of threads. The transfer of kinetic energy optimizes handling.

Description

Detachable soft shaft rotary blade device

The present invention relates to a rotary blade device, in particular to a separate soft-shaft rotary blade device.

Referring to FIG. 1, a general electric cutter 1 includes a handle 11, a motor 12 connected to the handle 11, and a rotary blade 13 provided on the handle 11 and drivingly connected to the motor 12 so as to be driven to rotate. The electric cutter 1 can be operated by a user holding the handle 11 by hand, and can be applied in different ways according to different speeds of the motor 12 and different types of the rotary blade 13, such as cutting fruits, cutting leather, trimming Plant stumps or fish scales.

However, since the electric cutter 1 is held by the handle 11 and held by hand, when performing relatively fine cutting, whether it is weight, power transmission, or even the configuration of components, it will affect the operation feel. In addition, under long-term use, not only the controllability affects the quality of the cutting operation, but also obviously reflects the degree of operator's fatigue burden, which affects the efficiency and durability of the cutting operation. Therefore, how to effectively optimize the maneuverability while maintaining the good cutting performance of the electric cutter 1 has become one of the key points for those in related fields to seek breakthroughs.

Therefore, the object of the present invention is to provide a separate soft shaft rotary blade device capable of optimizing handling.

Therefore, the novel separate soft-shaft rotary blade device includes a driving unit and a rotary blade unit.

The driving unit includes a motor and a coupling connected to the motor. The coupler has a connection piece connected to the motor, a sleeve connected to the connection piece at one end, a coupling piece connected to the other end of the sleeve, and a portion located in the sleeve and penetrating through the connection piece so that The driven flexible shaft of the motor is connected.

The rotary blade unit includes a transmission connected to the coupling member of the coupling and drivingly connected to the transmission flexible shaft, a cutter disposed on the transmission and capable of being driven to rotate by the transmission, and a transmission provided on the transmission. A control module on the actuator which is electrically connected to the motor of the driving unit through the transmission flexible shaft and can be operated by a user. The actuator has a housing that defines an inner space, a first transmission member disposed in the inner space and capable of being drivenly connected to the transmission flexible shaft, and an end disposed in the inner space and the first transmission member. A second transmission member linked with the other end for the cutter to set. The first transmission member has a first screw portion adjacent to the second transmission member, and the second transmission member has a second screw portion engaged with the first screw portion.

The effect of the present invention lies in that the kinetic energy transmission between the first transmission member and the second transmission member is achieved through the first screw portion and the second screw portion which are engaged with each other, and therefore, direct transmission of mutual engagement of threads is used. Mechanism, which can omit the setting of the clutch mechanism to simplify the transmission mechanism and avoid the loss of multi-stage transmission. In the case of streamlining the component configuration and reducing the connection stage of the transmission parts, it can be optimized due to the direct transmission of kinetic energy, weight reduction, and volume reduction Controllability, further reducing the user's hand burden, greatly reducing vibration under long-term use, and improving the stability of the cutting operation.

Before the new model is described in detail, it should be noted that in the following description, similar elements are represented by the same number.

Referring to FIG. 2 and FIG. 3, a first embodiment of the novel split-type soft-shaft rotary blade device 2 includes a driving unit 21 and a rotary blade unit 22 detachably coupled to the driving unit 21.

The driving unit 21 includes a motor 3 and a coupling 4 connected to the motor 3. The coupling 4 has a connecting member 41 detachably connected to the motor 3, a sleeve 42 connected to the connecting member 41 at one end, a coupling member 43 connected to the other end of the sleeve 42, and a large portion The transmission flexible shaft 44 of the motor 3 is located in the sleeve 42 and extends through the connecting member 41. The sleeve 42 covers most of the transmission soft shaft 44 and is disposed coaxially. The sleeve 42 is made of a flexible material such as plastic and can be bent in cooperation with the transmission soft shaft 44.

The rotary blade unit 22 includes a transmission 5 connected to the coupling 43 of the coupling 4, a cutter 6 rotatably disposed on the transmission 5, and a control mold disposed on the transmission 5. Group 7. The actuator 5 has a housing 51 defining an inner space 510, a first transmission member 52 disposed in the inner space 510 and extending outwardly and detachably connected to the transmission soft shaft 44, and a first transmission member 52 disposed in the inner space 510. The second transmission member 53 in the inner space 510 and at a right angle to the first transmission member 52, a cover 8 fixed on the casing 51, and a pair of cutters 6 corresponding to the cutter 51 The guide piece 91 (shown in FIG. 4) extends obliquely outward. The first transmission member 52 has a first screw portion 521 adjacent to the second transmission member 53, and the second transmission member 53 has a second screw portion 531 engaged with the first screw portion 521. In other words, the first transmission member 52 and the second transmission member 53 are engaged with each other through the mechanism of the threads of the first screw portion 521 and the second screw portion 531 to change the direction of the rotational kinetic energy. The purpose of transmitting kinetic energy to the cutter 6 connected to the second transmission member 53 is achieved.

Referring to FIGS. 4 and 5 and in conjunction with FIG. 3, the cutter 6 is disposed at an end of the second output member 53 extending to the outside of the inner space 510, and the cutter 6 has a plurality of serrated portions 61 formed at the periphery, that is, In other words, the cutter 6 is a circular saw-shaped blade, and a cutting edge can be formed by the serrations 61 to exert a cutting effect when the cutter 6 rotates.

The control module 7 has a switch 71 operatively disposed on the housing 51 and electrically connected to the motor 3 through the first transmission member 52 and the transmission flexible shaft 44 which are also conductive bodies, and a ring device A speed controller 72 of the motor 3 is electrically connected to the casing 51 and in the same manner as the switch 71. The rotation speed controller 72 is a knob-type structure and can be rotated to change the rotation speed of the motor 3.

The cover 8 has a surrounding portion 81 with an opening 810 and a surrounding portion 81, and a connecting portion 81 is connected to one side of the surrounding portion 81 and surrounds the cutting portion 6 together with the surrounding portion 81. The shield 6 of the semi-open space 820 that the cutter 6 is exposed from the opening 810. The guide piece 91 is fixed to the cover 8 and extends from the opening 810 to the outside of the semi-open space 820.

When using the first embodiment, the user only needs to hold the actuator 5 and then operate the switch 71 to turn on the motor 3, and the motor 3 will sequentially drive the transmission flexible shaft 44, the first transmission member 52, the Until the second transmission member 53 drives the cutter 6 to rotate, the user can use the rotating cutter 6 to perform the cutting operation on the target. When the cutting operation is performed, since the periphery of the cutter 6 is mostly surrounded by the cover 8, the article to be cut must enter the semi-open space 820 through the opening 810 to be cut by the rotating cutter 6. The fixed cover 8 can continuously play a protective role to avoid accidentally injuring a user or other bystanders when the cutter 6 rotates. In addition, the user can also adjust the speed controller 72 to change the output speed of the motor 3 to meet different cutting needs, and the general speed range is between 3000 and 10,000 revolutions.

In the first embodiment, the first transmission member 52 and the second transmission member 53 pass through a thread engagement mechanism between the first screw portion 521 and the second screw portion 531, so that the two The way in which the components are connected to each other transmits kinetic energy, changes the direction of rotation, and also minimizes the stage of transmission. Therefore, in the case of transmission without a gear set, the configuration of the clutch mechanism can be relatively omitted, and the overall component configuration can be effectively reduced, which is not only conducive to reducing the overall volume of the first embodiment, but also reduces the transmission stage. And reduce the kinetic energy loss, optimize the kinetic energy transmission, in order to greatly improve the maneuverability when holding and operating. In addition, for the working requirements of long-term holding and using, since the first embodiment reduces the transmission phase to the smallest two phases where the first transmission member 52 and the second transmission member 53 directly engage with each other, even if it is difficult Tolerances that are completely avoided can cause some vibrations, which can also minimize the vibration caused by this situation. With the advantage of reducing the overall volume and optimizing the handling, it can naturally reduce the user's hand burden, which is beneficial to improve Work efficiency also optimizes the stability of the cutting operation.

Referring to FIG. 6, this is a second embodiment of a new type of separate soft-shaft rotary blade device 2. This second embodiment is different from the first embodiment in that the actuator 5 of the rotary blade unit 22 also has Two guide vanes 55 are disposed on the first transmission member 52 at intervals in the axial direction. The casing 51 of the actuator 5 is provided with six heat dissipation holes 511. When the motor 3 is started and the first transmission member 52 is driven to rotate, the guide vanes 55 that rotate synchronously will drive the air to flow, so that the airflow flows in and out of the inner space 510 through the heat dissipation holes 511, and then reaches The effect of dissipating heat inside the actuator 5. It should be particularly noted that the number of the guide vanes 55 and the heat dissipation holes 511 can be adjusted according to requirements or in accordance with other component configurations, and is not limited to the number disclosed in the second embodiment.

Referring to FIG. 7, this is a third embodiment of a new type of separate soft-shaft rotary blade device 2. The third embodiment is different from the first embodiment in that the cutter 6 has six angled joints with each other. The cutting edge 62, that is, the cutter 6 is almost a hexagonal blade. Different from the circular sawtooth blade shown in FIG. 4, when the cutter 6 of the third embodiment continues to rotate, the angle at which each blade portion 62 contacts the article to be cut will continuously change, compared with the circular sawtooth blade As for the continuous cutting pattern that is almost constant, the cutting pattern can be discontinuous, and each blade portion 62 generates an extended cutting action to optimize the cutting performance.

Referring to FIG. 8, it is a fourth embodiment of a new type of separate soft-shaft rotary blade device 2. This fourth embodiment is different from the third embodiment in that the cutter 6 has eight angled joints with each other at an angle to each other. The cutting edge portion 62, that is, the cutter 6 is an octagonal blade, and can also exert the same effect of optimizing cutting performance as that of the third embodiment.

In summary, the new separate soft-shaft rotary blade device utilizes the manner in which the first screw portion 521 and the second screw portion 531 mesh with each other to transmit kinetic energy, which can minimize the transmission stage and reduce kinetic energy consumption. The vibration during operation also simplifies the configuration of the components, which is conducive to reducing the overall device volume, thereby improving the stability and controllability during operation, so it can indeed achieve the purpose of new cost.

However, the above are only examples of the new model. When the scope of implementation of the new model cannot be limited by this, any simple equivalent changes and modifications made in accordance with the scope of the patent application of the new model and the content of the patent specification are still Within the scope of this new patent.

2‧‧‧ Separate soft shaft rotary blade device

21‧‧‧Drive unit

22‧‧‧Rotary Blade Unit

3‧‧‧ Motor

4‧‧‧ coupling

41‧‧‧Connector

42‧‧‧ Casing

43‧‧‧Couplings

44‧‧‧ Transmission flexible shaft

5‧‧‧ Transmission

51‧‧‧shell

510‧‧‧Inner space

511‧‧‧Ventilation holes

52‧‧‧The first transmission

521‧‧‧First screw section

53‧‧‧Second transmission

531‧‧‧Second screw section

55‧‧‧ guide vanes

6‧‧‧ cutter

61‧‧‧Sawtooth

62‧‧‧Blade

7‧‧‧control module

71‧‧‧Switch

72‧‧‧speed controller

8‧‧‧ cover

81‧‧‧surrounding

810‧‧‧ opening

82‧‧‧Guard

820‧‧‧Semi-open space

91‧‧‧ Guide

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which:
Figure 1 is an incomplete side view illustrating a conventional electric cutter;
FIG. 2 is an exploded view of a side perspective, illustrating a first embodiment of the novel split-type flexible shaft rotary blade device;
3 is a partial cross-sectional view illustrating a rotary blade unit of the first embodiment;
4 is an exploded perspective view illustrating a cutter, a cover, and a guide of the rotary blade unit of the first embodiment;
FIG. 5 is a perspective view illustrating the assembled condition of the rotary blade unit;
FIG. 6 is a partial cross-sectional view similar to FIG. 3, illustrating a second embodiment of the novel split-type flexible shaft rotary blade device;
FIG. 7 is a perspective exploded view similar to FIG. 4 illustrating a third embodiment of the novel split-type flexible shaft rotating blade device; and FIG. 8 is a perspective exploded view similar to FIG. A fourth embodiment of the blade device.

Claims (9)

A separate soft-shaft rotary blade device includes:
A driving unit includes a motor and a connector connected to the motor. The connector has a connector connected to the motor, a sleeve connected to the connector at one end, and a coupling member connected to the other end of the sleeve. And a transmission soft shaft that is partly inside the casing and passes through the connecting member and can be driven to connect the motor; and a rotary blade unit including a coupling member connected to the coupling and connected with the transmission soft A shaft-connected transmission, a cutter disposed on the transmission and driven by the transmission to rotate, and a motor disposed on the transmission and electrically connected to the drive unit through the transmission flexible shaft, and A control module for user operation, the actuator has a housing defining an inner space, a first transmission member disposed in the inner space and can be driven to be connected to the transmission flexible shaft, and is disposed in the interior Space and one end is linked with the first transmission member and the other end is provided with the second transmission member provided by the cutter, the first transmission member has a first screw portion adjacent to the second transmission member, and the second transmission member has a Engage in A second screw portion of the screw portion. The split-type soft-shaft rotary blade device according to claim 1, wherein the tool of the rotary blade unit has six blade portions that are connected at an angle to each other. The split-type soft-shaft rotary blade device according to claim 1, wherein the tool of the rotary blade unit has eight blade portions that are connected at an angle to each other. The split-type flexible shaft rotary blade device according to claim 1, wherein the cutter of the rotary blade unit has a plurality of serrated portions formed on the periphery. The detachable flexible shaft rotary blade device according to any one of claims 1 to 4, wherein the actuator of the rotary blade unit further has at least one guide vane provided on the first transmission member, and the casing A plurality of heat dissipation holes are formed on the body. When the motor is driven to drive the first transmission member to rotate, the guide vane will drive the airflow through the heat dissipation holes to flow in the casing. The split-type soft-shaft rotary blade device according to claim 1, wherein the control module of the rotary blade unit is provided on the housing of the actuator to control the opening and closing of the motor of the drive unit. A switch, and a speed controller provided on the casing and operable to control the speed of the motor. The detachable flexible shaft rotary blade device according to any one of claims 1 to 4, wherein the rotary blade unit further includes a pair of guides extending obliquely outward from the housing of the actuator in response to a cutter. The detachable soft-shaft rotary blade device according to claim 7, wherein the rotary blade unit further includes a cover fixed on the housing of the actuator, the cover has a ring-shaped surrounding and has a A surrounding portion of the opening, and a shielding portion connected to one side of the surrounding portion, and surrounding the surrounding portion to define a semi-open space for surrounding the tool to expose the tool from the opening. The detachable flexible shaft rotary blade device according to claim 8, wherein the guide of the rotary blade unit is fixed to the cover and extends from the opening to the outside of the semi-open space.