TWM591032U - High-safety flexible shaft rotary blade device - Google Patents

Abstract

A high-security soft-axis rotating blade device includes a body, a blade detachably connected to the body, and a safety module connected to the body. The body includes a casing defining an installation space, and a transmission mechanism disposed in the installation space. The blade is connected to the transmission mechanism, and the safety module can limit the locking position of the transmission mechanism in one contact and move between an operating position separated from the transmission mechanism. When the blade is to be replaced, the safety module can be placed in the locked position to ensure that the blade will not rotate and cut the operator, so as to maintain the safety when replacing the blade.

Description

High safety soft shaft rotary blade device

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

Referring to FIG. 1, a conventional flexible shaft rotary blade device 1 includes a body 11 and a blade 12 that is replaceably mounted on the body 11. When the body 11 is in operation, the blade 12 will rotate for the user to cut the target object. After a period of use, the blade portion of the blade 12 will be blunt and need to be replaced to maintain the normal cutting performance of the flexible shaft rotary blade device 1.

However, in order to smooth the rotation operation of the blade 12, the transmission mechanism of the body 11 is designed to allow the blade 12 to rotate without resistance, so even if the body 11 is not operated, the blade 12 will still It is in a state where it is easy to rotate freely. Therefore, when the user performs the operation of replacing the blade 12, without any protective measures, it may still be cut due to the free rotation of the blade 12 during the disassembly and assembly process, which has some safety doubt.

Therefore, the purpose of the present invention is to provide a high-safety soft shaft rotating blade device that can ensure safety when replacing a blade.

Therefore, the novel high-security soft-axis rotating blade device includes a body, a blade detachably connected to the body, and a safety module connected to the body.

The body includes a casing defining an installation space, and a transmission mechanism disposed in the installation space. The blade is connected to the transmission mechanism.

The safety module can move between the locked position of the transmission mechanism in one contact and an operating position separated from the transmission mechanism.

The effect of the present invention is that the safety module can be switched to the locked position when the blade is to be replaced, and the rotation of the blade is prevented by limiting the transmission mechanism to ensure the safety when the blade is replaced. The safety module can be switched to the operating position when the body is in operation. At this time, the novel high-security soft shaft rotary blade device can operate normally and perform the cutting operation.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same number.

Referring to FIGS. 2 and 3, a first embodiment of the novel high-safety soft shaft rotary blade device includes a body 2, a blade 3 detachably connected to the body 2, and a blade connected to the body 2 Security module 4. It should be explained first that the main body 2 is powered by a driving device 9 during operation, but the driving device 9 is not the main technical feature of the present invention, so it will not be repeated here.

Referring to FIG. 4 and in conjunction with FIG. 3, the body 2 includes a housing 21 that defines an installation space 200, and a transmission mechanism 22 disposed in the installation space 200. The casing 21 has an inner wall surface 211 surrounding a through hole 210 adjacent to the transmission mechanism 22. The blade 3 is connected to the transmission mechanism 22. When the transmission mechanism 22 is powered by the driving device 9 and operates, it can transmit kinetic energy to rotate the blade 3 to perform the cutting operation.

The safety module 4 includes a shaft 41 penetrating through the through hole 210, a thimble 42a connected to one end of the shaft 41 facing the transmission mechanism 22, and a thimble 42a connected to the shaft 41 opposite to the thimble 42a A pressing member 43 at one end, a stage catch 44 connected to the shaft 41 and used to control the position of the shaft 41 relative to the transmission mechanism 22, and a set of shafts 41 disposed on the shaft 41 and against the shaft A compression spring 45 is provided between the pressing member 43 and the housing 21 to provide a reverse elastic restoring force when the pressing member 43 is pressed.

Referring to FIG. 4 and FIG. 5 in conjunction with FIG. 3, through the detent piece 45 at this stage, the user can position the shaft 41 relatively close to the transmission mechanism 22 and relatively far away when pressing the pressing member 43 successively Between two positions of the transmission mechanism 22. That is to say, the safety module 4 can move between the locked position of the transmission mechanism 22 in a contact and an operating position separated from the transmission mechanism 22. Among them, the locking piece 44 at this stage can be achieved by the mechanism design of the ratchet wheel and the relative locking slot, but it is not limited to this mechanism.

To perform the replacement operation of the blade 3, the user can press the pressing member 43 of the safety module 4, at this time the compression spring 45 is compressed to accumulate elastic recovery force, and the safety module 4 moves to The locking position shown allows the thimble 42a to limit the transmission mechanism 22, to prevent the transmission mechanism 22 from being mistakenly subjected to other external forces to rotate the blade 3, and to ensure the safety of the replacement operation.

After the replacement operation of the blade 3 is completed, the user can press the pressing member 43 of the security module 4 again. At this time, the elastic restoring force accumulated by the compression spring 45 causes the shaft 41 to cooperate with the locking piece 44 at this stage Control, moving away from the transmission mechanism 22. When the safety module 4 is in the operating position shown in FIG. 4, the thimble 42a is away from the transmission mechanism 22, and the transmission mechanism 22 can continue to operate without being restricted, so that the first embodiment Can continue normal operation and perform cutting operations.

Referring to FIG. 6, this is a second embodiment of the new high-security soft shaft rotary blade device. The difference between this second embodiment and the first embodiment is that the safety module 4 includes a shaft 41 connected to the shaft. The rubber 42b toward one end of the transmission mechanism 22. That is to say, in the second embodiment, the rubber 42b is brought into contact with the transmission mechanism 22 to prevent the transmission mechanism 22 from actuating by frictional force, thereby achieving the purpose of preventing the blade 3 from rotating. In addition to this, the second embodiment can achieve the same "safe replacement of the blade 3" effect as the first embodiment.

In summary, according to the novel high-security soft shaft rotating blade device, the safety module 4 can be located when the blade 3 needs to be replaced by simply operating the pressing member 43 of the safety module 4 The locked position avoids the danger caused by the rotation of the blade 3, so as to maintain the safety of the operation of replacing the blade 3; after completing the replacement operation, as long as the pressing member 43 is pressed again, the simple operation can make the safety mode The group 4 is moved to the operating position, so that the blade 3 can continue to operate and perform the cutting operation, so it can really achieve the purpose of new cost.

However, the above are only examples of the new model. When the scope of the new model cannot be limited by this, any simple equivalent changes and modifications made according to the patent application scope and patent specification content of the new model are still regarded as Within the scope of this new patent.

2‧‧‧Body 200‧‧‧Installation space 21‧‧‧Housing 210‧‧‧Through hole 22‧‧‧ Transmission mechanism 3‧‧‧Blade 4‧‧‧ Security Module 41‧‧‧Shaft 42a‧‧‧Thimble 42b‧‧‧rubber 43‧‧‧Pressing piece 44‧‧‧ Stage card 45‧‧‧Compression spring 9‧‧‧Drive equipment

Other features and functions of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a perspective view illustrating a conventional flexible shaft rotary blade device; FIG. 2 is an exploded schematic diagram illustrating a first embodiment of the novel high-safety soft shaft rotary blade device; 3 is a partial cross-sectional view illustrating a body and a blade of the first embodiment; 4 is a partially enlarged cross-sectional view at another angle, illustrating a security module of the first embodiment; Figure 5 is a schematic diagram illustrating the operation and efficacy of the security module in conjunction with Figure 4; and FIG. 6 is a schematic diagram similar to FIG. 5, illustrating a second embodiment of the novel high-security soft shaft rotary blade device.

2‧‧‧Body

200‧‧‧Installation space

21‧‧‧Housing

22‧‧‧ Transmission mechanism

3‧‧‧Blade

4‧‧‧ Security Module

Claims (4)

A high-security soft shaft rotary blade device, including: A body, including a shell defining an installation space, and a transmission mechanism provided in the installation space; A blade detachably connected to the transmission mechanism of the body; and A safety module is connected to the body and can move between a locked position of the transmission mechanism in a contact and an operating position separated from the transmission mechanism. The high-security soft-axis rotating blade device according to claim 1, wherein the outer shell of the body has an inner wall surface surrounding a through hole which is in a penetrating shape and is adjacent to the through hole of the transmission mechanism, and the safety module includes a penetration A shaft in the through hole, a thimble connected to the end of the shaft facing the transmission mechanism, and a pressing member connected to the end of the shaft opposite the thimble. The high-security soft-axis rotating blade device according to claim 1, wherein the outer shell of the body has an inner wall surface surrounding a through hole which is in a penetrating shape and is adjacent to the through hole of the transmission mechanism, and the safety module includes a penetration The shaft in the through hole, a rubber connected to one end of the shaft facing the transmission mechanism, and a pressing member connected to one end of the shaft opposite to the rubber. The high safety soft shaft rotary blade device according to claim 2 or 3, wherein the safety module further comprises a stage lock connected to the shaft and used to control the position of the shaft relative to the transmission mechanism A plate and a compression spring set on the shaft and abutting between the pressing member and the housing, and used to provide a reverse elastic restoring force when the pressing member is pressed.

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