TWI908601B - Rotating tool - Google Patents

Abstract

The present invention relates to a rotating tool, including: a driving rod, a driven rod, and a steering mechanism. The driven rod is configured to non-rotatably connected with a workpiece to be rotated. The steering mechanism includes a first pivot seat, a second pivot seat, a driving bevel gear, a driven bevel gear, and two transmission bevel gears. The first pivot seat and the second pivot seat are pivotally connected. The driving bevel gear is rotatably disposed on the first pivot seat and is non-rotatably connected to the driving rod. The driven bevel gear is rotatably disposed on the second pivot seat and is non-rotatably connected to the driven rod. The two transmission bevel are engaged between the driving bevel gear and the driven bevel gear. An elastic member is disposed between the first pivot seat and the driving bevel gear, and the elastic member keeps the driving bevel gear in constant engagement with the two transmission bevel gears. When the elastic member is compressed and the driving bevel gear is disengaged from the two transmission bevel gears, the first pivot seat and the second pivot seat are pivotable relative to each other to adjust an angle therebetween.

Description

Rotation tool

This invention relates to rotating tools, and more particularly to a rotating tool with an adjustable operating angle.

Commonly used turning tools, such as screwdrivers and tool holders, can be hand-held and turned to lock or release screws. These include rotatable turning tools, whose handles and working ends can be adjusted relative to each other, making it easy to perform locking operations in different operating environments.

However, existing steerable tools have complex structures, are difficult to manufacture, resulting in higher prices, and are prone to malfunctions or parts wear during use. They also have poor torque transmission, operational stability, and smoothness, and there are shortcomings that urgently need to be improved.

Therefore, it is necessary to provide a novel and progressive rotating tool to solve the above problems.

The main purpose of this invention is to provide a rotating tool that is directional, simple in structure, and stable and smooth in operation.

To achieve the above objectives, the present invention provides a turning tool, comprising: a drive lever, a driven lever, and a steering mechanism. The driven rod is non-rotatably connected to a rotating component; the steering mechanism includes a first pivot, a second pivot, a drive umbrella tooth, a driven umbrella tooth, and two transmission umbrella teeth. The first pivot and the second pivot are connected. The drive umbrella tooth is rotatably disposed on the first pivot and non-rotatably connected to the drive rod. The driven umbrella tooth is rotatably disposed on the second pivot and non-rotatably connected to the driven rod. The two transmission umbrella teeth are engaged between the drive umbrella tooth and the driven umbrella tooth. A spring abutment is provided between the first pivot and the drive umbrella tooth. The spring abutment keeps the drive umbrella tooth and the second drive umbrella tooth in contact normally. When the spring abutment is compressed and the drive umbrella tooth disengages from the second drive umbrella tooth, the first pivot and the second pivot can swing relative to each other to adjust their angle.

The following examples illustrate possible embodiments of the invention, but are not intended to limit the scope of protection sought by the invention. The prefixes "a" or "at least one" before the nouns mentioned herein are not intended to limit the quantity, and may also be "plural" depending on the requirements. Such variations in quantity are also within the scope of protection sought, as stated above.

Please refer to Figures 1 to 4, which show a preferred embodiment of the invention. The rotating tool 1 of the invention includes a drive lever 10, a driven lever 20 and a steering mechanism 30.

The driven rod 20 is non-rotatably connected to a rotating component; the steering mechanism 30 includes a first pivot 31, a second pivot 32, a drive umbrella tooth 33, a driven umbrella tooth 34, and two transmission umbrella teeth 35. The first pivot 31 is connected to the second pivot 32. The drive umbrella tooth 33 is rotatably disposed on the first pivot 31 and non-rotatably connected to the drive rod 10. The driven umbrella tooth 34 is rotatably disposed on the second pivot 32 and non-rotatably connected to the driven rod 20. The two transmission umbrella teeth 35 are connected between the drive umbrella tooth 33 and the driven umbrella tooth 34. A spring stop 36 is provided between the first pivot 31 and the drive umbrella tooth 33. The spring stop 36 keeps the drive umbrella tooth 33 and the second transmission umbrella tooth 35 in contact normally. When the spring stop 36 is compressed and the drive umbrella tooth 33 disengages from the second transmission umbrella tooth 35, the first pivot 31 and the second pivot 32 can be pivoted relative to each other to adjust their angles. In this way, the operating angles of the drive rod 10 and the driven rod 20 can be adjusted as needed to meet different usage requirements.

The drive umbrella tooth 33 includes a drive tooth portion 331 and a drive shaft portion 332. The spring stop 36 springs against one side of the first pivot 31 and between the drive tooth portion 331. The drive shaft portion 332 protrudes from the other side of the first pivot 31 and is detachably connected to the drive rod 10 to facilitate the replacement of different types or sizes of the drive rod 10. The driven umbrella tooth 34 includes a driven tooth portion 341 and a driven shaft portion 342. The driven shaft portion 342 protrudes from the second pivot 32 on one side opposite to the driving umbrella tooth 33 and is detachably connected to the driven rod 20. This allows for the replacement of different types or sizes of the driven rod 20 for use with screwdriver bits, screws, nuts, sockets, and other tool heads, resulting in a wide range of applications. The driving shaft portion 332 and the driving rod 10, and the driven shaft portion 342 and the driven rod 20, can be interlocked and positioned using existing structures such as pins, fasteners, or positioning balls.

In this embodiment, the second pivot 32 includes a horizontal plate 321 and two side plates 322. The driven umbrella tooth 34 passes through the horizontal plate 321, and the two side plates 322 are detachably assembled to the horizontal plate 321 for easy assembly. The first pivot 31 is a U-shaped extending plate, and the first pivot 31 is sandwiched between the two side plates 322. Each of the transmission umbrella teeth 35 includes a transmission tooth portion 351 and a transmission shaft portion 352. The transmission shaft portions 352 of the two transmission umbrella teeth 35 are arranged opposite each other in an axial direction and are not connected. Each transmission shaft portion 352 passes through and connects the first pivot 31 and the second pivot 32. When the drive rod 10 drives the drive umbrella tooth 33 to rotate, the two transmission umbrella teeth 35 are each driven independently by the drive umbrella tooth 33, and together drive the driven umbrella tooth 34 to rotate. In this way, the two drive umbrella teeth 35 can adjust their positions slightly when the swing angle changes, so as to stably mesh with the drive umbrella tooth 33 and the driven umbrella tooth 34, avoiding tooth misalignment caused by swing. In addition, the two drive umbrella teeth 35 can share the output torque of the drive umbrella tooth 33, improving the overall transmission strength and durability, and reducing the size of the linkage structure, achieving the effects of high strength, low wear and tear, and long service life. Furthermore, each of the transmission shaft portions 352 is recessed with a slot 353 and fixed to the second pivot 32 by a fastener 354 embedded in the slot 353. This allows the first pivot 31 and the second pivot 32 to smoothly pivot relative to each other to adjust the angle, facilitating assembly and providing excellent stability. The number of teeth on the drive gear portion 331, the driven gear portion 341, and each of the transmission gear portions 351 is the same, ensuring stable engagement and reliable torque transmission. In other embodiments, the number of teeth on the drive gear portion, the driven gear portion, and each of the transmission gear portions can also be adjusted and configured as needed.

Preferably, the steering mechanism 30 further includes a bushing 37. The second pivot 32 is provided with a stepped portion 323. The bushing 37 is engaged with the stepped portion 323 and surrounds the driven umbrella tooth 34. The bushing 37 can be selected to have lower frictional resistance with the driven umbrella tooth 34, avoiding direct contact between the driven umbrella tooth 34 and the second pivot 32 and thus preventing frictional resistance, ensuring that the driven umbrella tooth 34 can be smoothly driven. One of the first pivot 31 and the second pivot 32 is provided with at least one limiting portion 324, which can interfere with and block the other of the first pivot 31 and the second pivot 32. For example, each side plate 322 is provided with a limiting latch 324, which can interfere with and block the first pivot 31 to limit the angle of the first pivot 31 relative to the second pivot 32, thereby preventing excessive swing.

Referring to Figure 4, during operation, the drive lever 10 can be pulled away from one side of the steering mechanism 30, thereby causing the drive umbrella tooth 33 to compress the spring stop 36 and disengage from the second transmission umbrella tooth 35. This allows the first pivot 31 and the second pivot 32 to pivot relative to each other to adjust the operating angle. Then, releasing the drive lever 10 causes the spring stop 36 to move the drive umbrella tooth 33 toward and engage with the second transmission umbrella tooth 35. The structure is simple, easy to operate, and can operate stably and smoothly. The drive lever 10 can be rotated manually or by connecting to a power tool, thereby driving the drive umbrella tooth 33 to rotate in conjunction with the two transmission umbrella teeth 35 and the driven umbrella tooth 34, thus transmitting torque to achieve the purpose of tightening.

Alternatively, the rotating tool 1 further includes a kit 40, which is fitted around the outer periphery of the driven rod 20 and includes a snap-fit head 41. The snap-fit head 41 is snapped into the second pivot 32 without relative rotation. The driven rod 20 protrudes from one end of the kit 40 opposite the snap-fit head 41, thereby allowing the kit 40 to be held by the user to increase stability during operation. The kit 40 has a radial flange 42 at one end opposite the snap-fit head 41 to prevent the user's hand from accidentally moving onto the driven rod 20, thus improving operational safety. There is a gap between the inner peripheral surface of the kit 40 and the outer peripheral surface of the driven rod 20, allowing the driven rod 20 to rotate smoothly.

1: Rotating tool 10: Drive lever 20: Driven lever 30: Steering mechanism 31: First pivot 32: Second pivot 321: Cross plate 322: Side plate 323: Ring step 324: Limiting latch 33: Drive umbrella tooth 331: Drive tooth 332: Drive shaft 34: Driven umbrella tooth 341: Driven tooth 342: Driven shaft 35: Transmission umbrella tooth 351: Transmission tooth 352: Transmission shaft 353: Slot 354: Fastener 36: Spring stop 37: Bushing 40: Kit 41: Snap-fit head 42: Radial flange

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a partial cross-sectional view of a preferred embodiment of the present invention. Figure 4 is an operational schematic diagram of a preferred embodiment of the present invention.

1: Rotation tool

10: Drive lever

20: Follower lever

30: Turning Point Institutions

40: Kit

Claims (9)

A turning tool includes: a drive rod; a driven rod for non-rotatably connecting to a rotating component; and a steering mechanism including a first base, a second base, a drive umbrella tooth, a driven umbrella tooth, and two transmission umbrella teeth, wherein the first base and the second base are connected, the drive umbrella tooth is rotatably disposed on the first base and non-rotatably connected to the drive rod, the driven umbrella tooth is rotatably disposed on the second base and non-rotatably connected to the driven rod, and the two transmission umbrella teeth are engaged between the drive umbrella tooth and the driven umbrella tooth. A spring abutment is provided between the first pivot and the drive umbrella tooth. The spring abutment keeps the drive umbrella tooth and the second drive umbrella tooth in contact normally. When the spring abutment is compressed and the drive umbrella tooth disengages from the second drive umbrella tooth, the first pivot and the second pivot can swing relative to each other to adjust their angle. Each of the transmission umbrella teeth includes a transmission tooth portion and a transmission shaft portion. The transmission shaft portions of the two transmission umbrella teeth are arranged opposite each other in one axial direction and are not connected. Each transmission shaft portion passes through and connects the first pivot and the second pivot. When the drive rod drives the transmission umbrella tooth to rotate, the two transmission umbrella teeth are each driven independently by the drive umbrella tooth and together drive the driven umbrella tooth to rotate. The rotating tool as described in claim 1, wherein the drive umbrella tooth includes a drive tooth portion and a drive shaft portion, the spring abuts against one side of the first pivot and the drive tooth portion, and the drive shaft portion protrudes from the other side of the first pivot and is detachably connected to the drive shaft. The rotating tool as described in claim 1, wherein the driven umbrella tooth includes a driven tooth portion and a driven shaft portion, the driven shaft portion protruding from the second pivot relative to one side of the driving umbrella tooth and detachably connected to the driven shaft. The rotating tool as described in claim 1 further includes a kit, wherein the kit is fitted around the periphery of the driven rod and includes a snap-fit portion that snaps into the second pivot without relative rotation, and the driven rod protrudes from one end of the kit opposite the snap-fit portion. The rotating tool as described in claim 4, wherein the kit has a radial flange at one end opposite the snap-fit head, and there is a gap between the inner circumferential surface of the kit and the outer circumferential surface of the driven rod. The turning tool as described in claim 1, wherein the turning mechanism further includes a bushing, the second base having a ring portion, the bushing being engaged with the ring portion and surrounding and abutting against the driven umbrella tooth. The rotating tool as described in claim 1, wherein one of the first pivot and the second pivot is provided with at least one limiting latch, the at least one limiting latch being capable of interfering with and blocking the other of the first pivot and the second pivot. The rotating tool as described in any of claims 1 to 7, wherein the second base includes a cross plate and two side plates, the driven umbrella teeth passing through the cross plate, and the two side plates being detachably assembled to the cross plate. The rotating tool as described in claim 5, wherein the drive umbrella tooth includes a drive tooth portion and a drive shaft portion, the spring abutment springs against one side of the first pivot and the drive tooth portion, the drive shaft portion protrudes from the other side of the first pivot and is detachably connected to the drive shaft; the driven umbrella tooth includes The device includes a driven tooth and a driven shaft. The driven shaft protrudes from the second pivot on the side opposite to the driving umbrella tooth and is detachably connected to the driven shaft. Each driven shaft portion of the two driving umbrella teeth has a recessed slot, and each driven shaft portion is fixed to the second pivot by a fastener embedded in the slot. The second pivot assembly includes a second pivot assembly with a stepped portion. The driven gear, driven gear, and transmission gear have the same number of teeth. The steering mechanism further includes a bushing. The second pivot assembly has a stepped portion, and the bushing engages with the stepped portion and surrounds and abuts against the driven umbrella tooth. The second pivot assembly includes a horizontal plate and two side plates, and the driven umbrella tooth passes through the horizontal plate. The plate has two side plates that are detachably assembled to the horizontal plate; the first pivot is a U-shaped extended plate that is sandwiched between the two side plates; and each side plate is provided with a limiting latch that can interfere with and block the first pivot to limit the angle of the first pivot relative to the second pivot.