TWI748255B - Power tool with electric control reversing group - Google Patents

Abstract

The present invention is a power tool with an electronically controlled reversing group, which includes an actuating group, two swing arms, an electronically controlled reversing group and a transmission group. The driving group provided in the actuating group includes a driving head and a driving head for driving the driving head For rotating gears, the two swing arms can reciprocate toward the gear. Each swing arm includes a pawl part that can mesh with the gear. The group is connected with the two swing arms and drives the two swing arms to reciprocate toward the gear. Therefore, the electronically controlled reversing group of the present invention can be directly operated by electric mode, avoiding the need to manually switch the rotation direction of the gear, and increasing the operation of the present invention. Convenience.

Description

Power tool with electric control reversing group

The invention relates to a power tool, in particular to a power tool with an electronically controlled reversing group with simple and convenient operation.

Compared with manual tools, power tools are more convenient and labor-saving, easy to operate, and highly efficient. Therefore, industries such as the automobile industry or aerospace industry will use them in machinery manufacturing, and with the advancement of science and technology, there are currently many forms , Such as an existing power tool, which includes an actuation group, two swing arms and a reversing group. The actuation group is provided with a drive head, the drive head has gears, and the two swing arms can mesh with the gears to make the gears face two different In the direction of rotation, the reversing group includes a stopper and a dial button that can limit one of the swing arms to keep it away from the gear, and the dial can switch the direction of the stopper so that the stopper restricts one of the swing arms, by This allows the other swing arm to mesh with the gear.

However, the existing power tool is equipped with two swing arms. When changing the rotation direction of the gear, it is necessary to manually switch the steering of the drive head through the switch of the reversing group. However, when the existing power tool is used in a deep narrow space and needs to switch the drive When turning the head, it is necessary to take out the existing power tool to switch the direction of the toggle, which causes the operation of the existing power tool to be time-consuming, troublesome and inefficient. It can be seen that the existing power tool is designed There is still room for improvement and progress.

In order to solve the problem that the reversing group of the existing power tool needs to manually switch the rotation direction of the gear, the operation of the existing power tool is cumbersome, time-consuming and inefficient. The invention provides a power tool with an electronically controlled reversing group, which includes an actuating group, two swing arms and an electronically controlled reversing group. The driving group provided in the actuating group includes a driving head and a gear for driving the driving head to rotate , The pawl part of one of the swing arms can mesh with the gear, and the electronic control reversing group can control the pawl part of the other swing arm It is far away from the gear, so the electronically controlled reversing group can be directly operated in an electric manner, which increases the convenience and work efficiency of the present invention in use.

The power tool with an electronically controlled reversing group proposed by the present invention to solve the technical problem includes: an actuation group, which includes a drive group, the drive group includes a drive head and more than one gear, the more than one gear can Drive the driving head to rotate; two swing arms, which can reciprocate toward the more than one gear, each swing arm includes a pawl portion and a resisting portion, the pawl portion of each swing arm can mesh with one of the gears; An electronically controlled reversing group, which is used to control one of the pawl portions of the swing arm away from the gear, the electronically controlled reversing group includes a stopper, the stopper includes a stopper, the stopper A portion restricts the abutting portion of one of the swing arms so that the pawl portion of the swing arm is away from the gear; and a transmission set is connected with the two swing arms to drive the two swing arms to reciprocate toward the more than one gear .

In the power tool with an electronically controlled reversing group, the electronically controlled reversing group includes a driving device, and the stopper can be driven to swing by the driving device.

In the power tool with an electronically controlled reversing unit, the driving device is a motor, and the stopper includes a coupling part that can be fixed with the drive shaft of the motor so that the motor can Drive the stopper to swing.

In the power tool with an electronically controlled reversing group, the motor is a servo motor.

In the power tool with an electronically controlled reversing group, the driving device includes two electromagnetic coils that can be energized, and two opposite ends. The two electromagnetic coils are respectively adjacent to the two ends of the driving device, and the stopper The part includes a magnetic attraction part, the magnetic attraction part is between the two electromagnetic coils, and the magnetic attraction part can be attracted by one of the electromagnetic coils to approach, so that the driving device drives the stopper to swing.

In the power tool with an electronically controlled reversing group, the abutment portion and the pawl portion of each swing arm are respectively located at two ends of the swing arm, one of the swing arms is provided with a swing hole, and the other swing arm is provided with a swing hole. The arm passes through the swing hole, the two swing arms are arranged in a cross, the power tool includes a torsion spring, the torsion spring is interposed between the two swing arms, the torsion spring includes two limit arms, the two limit arms Respectively adjacent to the two pawl portions of the two swing arms, and the two limit arms respectively abut against the two swing arms so that the two swing arms approach the gear.

In the power tool with an electronically controlled reversing group, the two swing arms are both elongated and arranged side by side, the power tool includes a tension spring, and two ends of the tension spring are respectively provided on the two Swing the arms so that the two swing arms approach the gear.

In the power tool with an electronically controlled reversing group, the transmission group includes a yoke head and a pivot shaft, the pivot shaft passes through the yoke head and the torsion spring, so that the yoke head can use the pivot shaft It swings at the center, and the two swing arms are pivoted on the yoke head.

The power tool with an electronically controlled reversing group, wherein the transmission group includes more than two planetary gears, and the two or more planetary gear trains are used to connect a power source and two swing arms to make the The power source can drive the two swing arms.

In the power tool with an electronically controlled reversing group, there are three planetary gear trains with more than two.

In the power tool with an electronically controlled reversing group, there is more than one gear, and the driving head and the gear are arranged coaxially.

In the power tool with an electronically controlled reversing group, the one or more gears are two and they are divided into a first gear and a second gear. The driving head is arranged coaxially with the first gear, and the first gear Two gears mesh with the first gear, and the pawl portion of each swing arm can mesh with the second gear so that the second gear drives the first gear to rotate.

In the power tool with an electronically controlled reversing group, the pawl portion of each swing arm is located at one end of the swing arm, and the resisting portion of each swing arm is between the two ends of the swing arm. The two abutting parts of the arm are protruding toward each other. The electronically controlled reversing group includes a servo motor, a reverse gear, two sliding blocks and two guide posts. The drive shaft of the servo motor is fixed with the reverse gear to drive it. The reverse gear rotates, the reverse gear is located between the two swing arms, the two sliders are respectively slidably arranged on both sides of the reverse gear, each slider includes a plurality of teeth, the reverse gear and the two sliders The teeth of the two sliding blocks are engaged to drive the two sliding blocks to slide. The two guide posts are respectively connected with the two sliding blocks, and the two guide posts can respectively push against the two abutting parts of the two swing arms, so that one of the two sliding arms can swing The pawl portion of the arm is away from the gear.

The technical means of the present invention can obtain the improvement in efficacy: the power tool with the electronically controlled reversing group of the present invention can control the pawl part of one of the swing arms away from the gear, so the electronically controlled reversing group It can be directly operated in an electric manner, which increases the convenience and work efficiency of the present invention in use.

10: containing unit

11: Shell

12: Piercing

13: opening

14: Pivot

15: Through hole

20: Actuation group

21: drive group

211: Drive head

212: Gear

30: swing arm

31: swing hole

32: pawl

33: Arrival

40A, 40B: Electronically controlled reversing group

41A, 41B: drive unit

42A, 42B: stopper

421A: Joint

421B: Magnetic part

422A, 422B: stop part

50: Torsion spring

51: limit arm

60: Transmission group

61: Pivot

62: Yoke

63: eccentric chainring

64: Planetary gear

Fig. 1 is a perspective view of the appearance of the first preferred embodiment of the present invention from a first perspective.

Fig. 2 is a perspective view of the appearance of the first preferred embodiment of the present invention from a second perspective.

Figure 3 is an exploded view of the first preferred embodiment of the present invention.

Fig. 4 is an exploded view of two swing arms, torsion springs and yoke heads of the first preferred embodiment of the present invention.

Fig. 5 is a cross-sectional view of the first use state of the first preferred embodiment of the present invention.

Fig. 6 is a cross-sectional view of the first preferred embodiment of the present invention in a second use state.

Fig. 7 is a schematic diagram of the use state of the second preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the content of the present invention, the preferred embodiment as shown in the figure is further used, and the detailed description is as follows: As shown in Figures 1 to 3, the first preferred embodiment of the present invention includes a housing unit 10, an actuation group 20, two swing arms 30, an electronically controlled reversing group 40A, a torsion spring 50 and a The transmission group 60, the actuation group 20, the two swing arms 30, the electronically controlled reversing group 40A, the torsion spring 50 and the transmission group 60 are installed in the accommodating unit 10.

As shown in FIGS. 1, 2 and 5, the accommodating unit 10 is integrally formed and includes a housing 11, a through hole 12, an opening 13, a pivot hole 14 and a through hole 15. The housing 11 is hollow. The through hole 12, the opening 13, the pivot hole 14 and the through hole 15 penetrate the housing 11, the through hole 12 is circular and adjacent to the top of the housing 11, the opening 13 is circular and located in the housing 11 At the bottom of the body 11, the pivot hole 14 and the through hole 15 are located between the through hole 12 and the opening 13, wherein the through direction of the through hole 12 is perpendicular to the through direction of the opening 13, and the pivot hole 14 and the through hole The penetrating direction of the hole 15 is parallel to the penetrating direction of the perforation 12, wherein the shape of the perforation 12 and the opening 13 can evenly disperse the stress and enhance the structural strength.

As shown in FIGS. 3 to 5, the actuation group 20 is installed on the housing 11 by the perforation 12, and the actuation group 20 includes a driving group 21, the driving group 21 passes through the perforation 12, and the driving group 21 It includes a driving head 211 and a gear 212, the driving head 211 is located outside the housing 11, the gear 212 is located inside the housing 11, and the gear 212 and the driving head 211 are coaxially arranged, wherein the gear 212 It is used to drive the driving head 211 to rotate. The two swing arms 30 are installed inside the housing 11 through the opening 13, and the two swing arms 30 can reciprocate toward the gear 212 inside the housing 11, wherein One of the swing arms 30 is provided with a swing hole 31, and the other swing arm 30 passes through the swing hole 31. The two swing arms 30 are arranged to cross each other. The pawl portion 32 and the abutting portion 33 are respectively located at the two ends of the swing arm 30, and the pawl portion 32 of one of the swing arms 30 can mesh with the gear 212.

As shown in Figures 2, 5 and 6, the electronically controlled reversing group 40A is installed in the accommodating unit 10, and the electronically controlled reversing group 40A includes a driving device 41A and a stopper 42A. The device 41A can be located outside the housing 11, and the driving device 41A can be a DC motor, a stepping motor or a servo Motor. In this first preferred embodiment, the driving device 41A is a servo motor. The stopper 42A can be driven to swing by the driving device 41A. The stopper 42A includes a coupling portion 421A and a stopper. The connecting portion 421A can be fixed to the drive shaft of the servo motor, so that the servo motor can drive the stopper 42A to swing. The stopper 422A penetrates into the housing 11 through the through hole 15 In addition, the blocking portion 422A can limit one of the resisting portions 33 of the swing arm 30 so that the pawl portion 32 of the swing arm 30 is away from the gear 212.

3 to 5, the torsion spring 50 is located between the two swing arms 30, the torsion spring 50 includes two limit arms 51, the two limit arms 51 are respectively adjacent to the two swing arms 30 The pawl portion 32, and the two limit arms 51 respectively abut against the two swing arms 30, so that the two pawl portions 32 of the two swing arms 30 approach the gear 212, and the transmission group 60 is driven by the accommodating unit 10 The opening 13 is installed inside the housing 11, and the transmission group 60 is connected to the two swing arms 30 to drive the gear 212 to rotate. The transmission group 60 includes a pivot 61, a yoke 62, and an eccentric gear plate. 63 and two or more planetary gears 64, the pivot shaft 61 passes through the yoke head 62 and the torsion spring 50 through the pivot hole 14, and the pivot shaft 61 is coupled to the housing 11 so that the yoke head 62 can swing The ground is installed inside the housing 11, and the two swing arms 30 are pivoted to the yoke head 62, the eccentric gear plate 63 is arranged at the bottom of the yoke head 62, and the eccentric gear plate 63 can drive the yoke head 62 swing, the two or more planetary gears 64 are three in this preferred embodiment, the third planetary gear 64 is equiangularly arranged at the bottom of the eccentric gear plate 63, and the third planetary gear 64 is adjacent to the accommodating unit The opening 13 of 10, and the three planetary gears 64 are used to connect a power source and two swing arms 30 so that the power source can drive the two swing arms 30, wherein the power source can be an electric motor, more specifically In other words, the three planetary gears 64 are connected to the two swing arms 30 and the power source through the eccentric gear plate 63 and the yoke head 62. As for the connection method of the three planetary gears 64, the connection method is the prior art, which will not be repeated.

As shown in FIG. 7, the second preferred embodiment of the present invention includes a housing unit 10, an actuation group 20, two swing arms 30, an electronically controlled reversing group 40B, a torsion spring 50 and a transmission group 60 , The actuation group 20, the two swing arms 30, the electronically controlled reversing group 40B, the torsion spring 50 and the transmission group 60 Installed in the accommodating unit 10, since the second preferred embodiment of the present invention is substantially the same as the first preferred embodiment, the difference is only in the form of the electronically controlled commutation group 40B, so only the electrical Description of the control reversing group 40B: As shown in FIG. 7, the electronic control reversing group 40B is installed in the accommodating unit 10, and the electronic control reversing group 40B includes a driving device 41B and a stopper 42B. The driving device 41B can be located outside the casing 11. The driving device 41B is fan-shaped and includes two electromagnetic coils 411B that can be energized, and two opposite ends. The two electromagnetic coils 411B are respectively adjacent to the two ends of the driving device 41B, The stopper 42B includes a magnetic part 421B and a stop part 422B. The magnetic part 421B is made of a metal material and is located between the two electromagnetic coils 411B. The magnetic part 421B can be The electromagnetic coil 411B is attracted and penetrates the electromagnetic coil 411B, or the magnetic attraction portion 421B is attracted by another electromagnetic coil 411B and penetrates the electromagnetic coil 411B, so that the driving device 41B drives the stopper 42B to swing, and the stopper The portion 422B penetrates the inside of the housing 11 through the through hole 15, and the stop portion 422B can restrict one of the resisting portions 33 of the swing arm 30 and keep the pawl portion 32 of the swing arm 30 away from the gear 212.

As shown in Figures 2, 5 and 6, the electronically controlled reversing group 40A of the first preferred embodiment of the present invention is provided with the driving device 41A that can drive the stopper 42A to swing, and the stopper 42A is provided There is the stop portion 422A penetrating into the housing 11 through the through hole 15. Therefore, when the driving device 41A drives the stop member 42A to swing, the stop portion 422A restricts the resisting portion of one of the swing arms 30 33 so that the pawl portion 32 of the swing arm 30 is away from the gear 212, so that the other swing arm 30 drives the gear 212 to rotate in a rotating direction. On the contrary, the stop portion 422A limits the resistance of the other swing arm 30. When the pawl portion 32 of the swing arm 30 is away from the gear 212 by the portion 33, a swing arm 30 that is not restricted by the stop portion 422A will drive the gear 212 to rotate in another rotation direction.

As shown in FIG. 7, the electronically controlled reversing group 40B of the second preferred embodiment of the present invention is provided with the driving device 41B that can drive the stopper 42B to swing, and the magnetic attraction portion 421B of the stopper 42B is Is arranged between the two electromagnetic coils 411B, so the magnetic attraction portion 421B will be attracted by one of the electromagnetic coils 411B By drawing closer, the stopper 42B can swing at both ends of the driving device 41B. The stopper 422A restricts one of the abutting portions 33 of the swing arm 30 and keeps the pawl portion 32 of the swing arm 30 away The gear 212 makes the other swing arm 30 drive the gear 212 to rotate in a rotation direction.

As mentioned above, the driving device of the first preferred embodiment and the second preferred embodiment of the present invention can directly drive the stopper to swing in an electric manner, so that the present invention can limit the stopper One of the resisting portions 33 of the swing arm 30 increases the practicability of the present invention.

As shown in Figures 1 to 3, the accommodating unit 10 of the present invention is integrally formed, and the housing 11 of the accommodating unit 10 is provided with the perforation 12 and the opening 13, so that the actuation group 20 and the swing arm 30 And the transmission unit 50 can be directly installed in the housing 11 through the through hole 12 and the opening 13, so that the accommodating unit 10 of the present invention does not need to be formed by combining two or more components, and the The structural strength of the accommodating unit 10 increases the installation stability of each component, and the accommodating unit 10 of the present invention is further provided with the pivot hole 14 and the through hole 15, without the need for additional drilling in the accommodating unit 10 The accommodating unit 10 produces small cracks that are not easy to notice, so that the pivot 61 and the stopper 41 can directly pass through the inside of the housing 11, further improving the structural strength of the accommodating unit 10.

The above descriptions are only the first and second preferred embodiments of the present invention. The present invention does not limit the arrangement of the two swing arms and the number of gears. The two swing arms of the present invention can also be used like Taiwan’s M447817 and I222916 As shown in Patent No. I370043, the two swing arms are arranged in a non-crossing arrangement, the pawl portion of each swing arm is located at one end of the swing arm adjacent to the gear, and the other end of the swing arm is pivoted on the yoke head , The two ends of the tension spring are respectively arranged on the two swing arms so that the two swing arms approach the gear; the gear of the present invention can also be as shown in Taiwan Patent No. M447817, the gear train is two, two The gears are divided into a first gear and a second gear. The driving head is coaxially arranged with the first gear, the second gear is meshed with the first gear, and the pawl portion of a swing arm can engage with the first gear. The second gear meshes so that the second gear drives the first gear to rotate, as long as the transmission group can be connected The two swing arms drive the gears to rotate, and the gears can drive the driving head to rotate, both of which are covered by the patent of the present invention.

Finally, as shown in Taiwan Patent No. I370043, the pawl portion of each swing arm is located at one end of the swing arm, and each swing arm includes a resisting portion, which is interposed between the two swing arms. Between the two ends, the two abutting parts of the two swing arms are protruding toward each other. The electronically controlled reversing group includes a servo motor, a reverse gear, two sliding blocks, and two guide posts. The drive shaft of the servo motor and the reverse rotation The gears are solidified to drive the counter-rotating gear to rotate. The counter-rotating gear is located between the two swing arms. The two sliders are slidably arranged on both sides of the counter-rotating gear. Each slider includes a plurality of teeth. The reverse gear meshes with the teeth of the two sliders to drive the two sliders to slide. The two guide posts are respectively connected with the two sliders, and the two guide posts can respectively push against the two abutments of the two swing arms. Therefore, the servo motor can slide the two sliders through the reverse gear. When one of the sliders slides in the direction of the gear, the guide post connected to the slider can push against the swing arm The abutment part makes the pawl part of the swing arm away from the gear.

10: containing unit

11: Shell

15: Through hole

20: Actuation group

21: drive group

211: Drive head

40A: Electronically controlled reversing group

41A: Drive

42A: Stopper

421A: Joint

422A: Stop

60: Transmission group

61: Pivot

63: eccentric chainring

64: Planetary gear

Claims (15)

A power tool with an electronically controlled reversing group, comprising: an actuation group including a driving group, the driving group including a driving head and more than one gear, the more than one gear can drive the driving head to rotate; The swing arm can reciprocate toward the one or more gears. Each swing arm includes a pawl portion and a resisting portion. The pawl portion of each swing arm can mesh with one of the gears; an electronically controlled reversing group, It is used to control the pawl part of one of the swing arms away from the gear, the electronically controlled reversing group includes a stopper, the stopper includes a stopper, and the stopper restricts one of the swing arms The abutment part makes the pawl part of the swing arm away from the gear; and a transmission group, which is connected with the two swing arms and drives the two swing arms to reciprocate toward the more than one gear. According to claim 1, the power tool having an electronically controlled reversing group, wherein the electronically controlled reversing group includes a driving device, and the stopper can be driven to swing by the driving device. The power tool with an electronically controlled reversing unit according to claim 2, wherein the driving device is a motor, and the stopper includes a coupling part that can be fixed to the drive shaft of the motor, The motor can drive the stopper to swing. According to claim 3, the power tool with an electronically controlled reversing group, wherein the motor is a servo motor. The power tool with an electronically controlled commutation group according to claim 2, wherein the driving device includes two electromagnetic coils capable of energizing and two opposite ends, and the two electromagnetic coils are respectively adjacent to the two ends of the driving device , The stopper includes a magnetic attraction part between the two electromagnetic coils, and the magnetic attraction part can be attracted by one of the electromagnetic coils to approach, so that the driving device drives the stopper to swing . According to any one of claims 2 to 5, the power tool with an electronically controlled reversing group, wherein the abutment portion and the pawl portion of each swing arm are respectively located at both ends of the swing arm, and one of the swing arms is provided with a A swing hole, the other swing arm passes through the swing hole, the two swing arms are arranged crosswise, the power tool includes a torsion spring, the torsion spring is interposed between the two swing arms, and the torsion spring includes two limit stops The two limit arms are respectively adjacent to the two pawl portions of the two swing arms, and the two limit arms respectively abut against the two swing arms so that the two swing arms approach the gear. The power tool with an electronically controlled reversing group according to any one of claims 2 to 5, wherein the two swing arms are both elongated and arranged side by side, the power tool includes a tension spring, and The two ends of the extension spring are respectively arranged on the two swing arms so that the two swing arms approach the gear. The power tool with an electronically controlled reversing group according to claim 6, wherein the transmission group includes a yoke head and a pivot, the pivot passes through the yoke head and the torsion spring, so that the yoke head can Swing with the pivot as the center, and two swing arms are pivoted on the yoke head. The power tool with an electronically controlled reversing group according to claim 8, wherein the transmission group includes two or more planetary gears, and the two or more planetary gear trains are used to connect a power source and two swinging gears. Arm so that the power source can drive the two swing arms. According to claim 9 of the power tool with an electronically controlled reversing group, three or more planetary gear trains are provided. According to claim 10, the power tool with an electronically controlled reversing group, wherein the one or more gears are one, and the driving head is arranged coaxially with the gear. The power tool with an electronically controlled reversing group according to claim 7, wherein the one or more gears are two and are divided into a first gear and a second gear, and the driving head is coaxial with the first gear It is provided that the second gear meshes with the first gear, and the pawl portion of each swing arm can mesh with the second gear so that the second gear drives the first gear to rotate. According to any one of claims 1 to 5, the power tool with an electronically controlled reversing group, wherein the more than one gear is one, and the driving head is arranged coaxially with the gear. The power tool with an electronically controlled reversing group according to any one of claims 1 to 5, wherein the one or more gears are two and are divided into a first gear and a second gear, and the driving head It is arranged coaxially with the first gear, the second gear meshes with the first gear, and the pawl portion of each swing arm can mesh with the second gear so that the second gear drives the first gear to rotate. The power tool with an electronically controlled reversing group according to claim 1, wherein the pawl portion of each swing arm is located at one end of the swing arm, and the abutment portion of each swing arm is between the two ends of the swing arm , The two abutment parts of the two swing arms are protruding toward each other, the electronically controlled reversing group includes a servo motor, a reverse gear, two sliding blocks and two guide posts, and the drive shaft of the servo motor is fixed to the reverse gear As a result, the reverse gear can be driven to rotate. The reverse gear is located between the two swing arms. The two sliders are slidably arranged on both sides of the reverse gear. Each slider includes a plurality of teeth. The reverse gear and The teeth of the two sliders mesh to drive the two sliders to slide. The two guide posts are respectively connected to the two sliders, and the two guide posts can respectively push against the two abutting parts of the two swing arms, so that The pawl part of one of the swing arms is far away from the gear.

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