TWI726430B - Ratchet tool for electric reversing - Google Patents

Abstract

The present invention is an electric reversing ratchet tool, comprising: a head with a chamber; a ratchet mechanism, arranged in the chamber, with a rotating part and a catching part; the rotating part can rotate, the The latch can be displaced and control the direction of rotation of the rotating member; a reversing device has a reversing piece and a second magnetic piece; the reversing piece has a first magnetic piece, and the reversing piece is displaceable Holding the latching member; the second magnetic member opposite to the first magnetic member; one of the first magnetic member and the second magnetic member is a permanent magnet, and the other is an electromagnet; the magnetic direction is changed through the electromagnet, The position of the first magnetic element is changed by the action of magnetic attraction or repulsion, so that the position of the reversing element can be relatively changed to hold the latching element.

Description

Ratchet tool for electric reversing

The present invention relates to a hand-held tool, in particular to an electric reversing ratchet tool capable of generating reversal through changes in the magnetic field of an electromagnet.

The ratchet wrench is a commonly used hand-held tool. In order to be able to apply force at a narrow angle, a ratchet structure is used internally. As shown in Figure 1, the single-directional ratchet will rotate in a single direction when in use, and the other One direction will form a buckling, and when rotating in the buckling direction, force can be applied to the buckling direction. The conventional reversing ratchet wrench is mainly used to change the rotation direction of the ratchet to make the reversing ratchet The wrench changes the operating direction of the force. The ratchet structure 10 includes a ratchet wheel 11, a detent tooth 12, and a reversing button 13. The ratchet tooth 11 is provided with detent teeth around the circumference, and the detent teeth 12 can be opposed to each other. Engaged on the outer surface of the ratchet wheel 11, through the engagement in different directions, the ratchet wheel 11 can generate force in different directions; the reversing button 13 is elastically bottomed on the latching tooth 12, and can drive the latch The tooth 12 produces a direction change function, and the direction change action is performed through the changeover button 13.

The conventional ratchet structure, whether it is a manual ratchet wrench or an electric ratchet wrench, requires the operator to switch the position of the detent tooth 12 by turning the direction of the reversing button 13 by hand, so that the rotation direction of the ratchet can be changed.

However, during the switching process of the reversing button 13, the user needs to use the hand to operate the reversing button 13 to perform the reversing action. If the working area is relatively small or difficult to penetrate, remove the tool for reversing. It takes a considerable amount of time to reinsert it, which causes inconvenience in its operation. Furthermore, because the reversing button 13 needs to be switched by hand, part of the structure of the reversing button 13 will be exposed, which is prone to foreign matter or dust intrusion after long-term use, resulting in abrasion of the internal structure. In addition, in order to facilitate the operation, the reversing button 13 has a certain height, which causes the height of the head of the tool to increase relatively, which restricts its use.

The main purpose of the present invention is to provide an electric commutation ratchet tool that can generate commutation through the change of the magnetic field of the electromagnet.

To achieve the above objective, the present invention provides an electric reversing ratchet tool, which includes: One head is provided with a chamber; A ratchet mechanism is arranged in the accommodation chamber and has a rotating part and a latching part. The rotating part rotates on a central axis; the latching part can be displaced in the accommodation chamber, and the latching part is unidirectionally latched The rotating part enables the rotating part to rotate in one direction in the chamber A reversing device is arranged in the containing chamber of the head and has a reversing piece and a second magnetic piece; the reversing piece has a holding portion and a first magnetic piece, and the holding portion has a movable top Holding the latching member; the second magnetic member is opposite to the first magnetic member; one of the first magnetic member and the second magnetic member is a permanent magnet, and the other is an electromagnet; the electromagnet can change the magnetism so that the The first magnetic member is attracted or repelled by the magnetic action to change the position of the holding portion, so that the holding portion can change the position of the locking member, and the locking member can relatively change the position of the rotating member The direction of force.

Preferably, the first magnetic element is a permanent magnet; the second magnetic element is an electromagnet, the electromagnet includes at least one coil and an iron core, and the coil is wound on the iron core.

Preferably, the permanent magnet has a single polarity, and the iron core of the electromagnet has two phases with different polarities.

Preferably, the permanent magnet has at least two different polarities, the electromagnet has at least three magnetic poles, and the magnetic poles at two adjacent positions are opposite.

The electric reversing ratchet tool provided by the present invention can change the position of the reversing member holding the detent member by changing the magnetic direction through an electromagnet, so that the detent member can change the detent position to change the rotating member The direction of rotation. The position of the magnetic pole between the first magnetic piece and the second magnetic piece is fixed, and a constant position can be maintained every time the magnetic changes, and the commutation effect is good.

Please refer to Figures 2 to 3, the ratchet tool 20 provided by a preferred embodiment of the present invention has a head 21, the head 21 is provided with a rotatable ratchet mechanism and a controllable rotation of the ratchet mechanism Directional electric reversing device 50 (hereinafter referred to as reversing device for short). The electric reversing ratchet tool provided by the present invention can be an electric ratchet wrench or a manual (non-powered) ratchet wrench. The electric ratchet wrench or manual ratchet wrench has electric energy. For example, the wrench is equipped with a battery and is powered by The battery provides electrical energy, and can provide electrical energy to the electric reversing device through an operating action, such as pressing a button. The ratchet tool 20 shown in FIG. 2 is a ratchet wrench. Its body is provided with a reversing button 22. Pressing the reversing button 22 can activate the reversing device 50 with electrical energy to change the rotation direction of the ratchet mechanism. The other structures of the ratchet wrenches are not the subject of creation of the present invention, so they will not be described in detail. The directions of the front, back, left, right, clockwise or counterclockwise rotation described in this manual are subject to the direction of the diagram, but it is not limited, please explain first.

A chamber 211 is provided inside the head 21.

The ratchet mechanism is installed in the chamber 211, and has a rotating member 30 and a latching member 40;

In this embodiment, the rotating member 30 is a ratchet wheel 32, which rotates along a central axis. The ratchet wheel 32 is pivoted in the chamber 211, and the ratchet wheel 32 is circumferentially provided with a ratchet tooth portion 321. , The central axis is provided with a working part 322, such as a convex post or a polygonal hole for joining with a workpiece or a sleeve;

A latch 40, a front end of which is provided with a latching tooth portion 41 for latching on the ratchet part 321, and a rear end is provided with a reversing portion 42;

A reversing device 50 is arranged in the containing chamber 211 of the head 21 and has a reversing member 60 and a second magnetic member 70. The reversing member 60 is pivoted in the containing chamber 211 and can rotate; The front end of the reversing member 60 has an elastic holding portion 61 and the rear end has a first magnetic member 62; the holding portion 61 can elastically hold the reversing portion 42 of the latch 40, the reversing member When 60 rotates, the position of the holding portion 61 can be changed, so that the holding portion 61 can elastically hold the reversing portion 42 in different positions, so that the tooth portion 41 of the latch 40 engages with the ratchet of the ratchet wheel 32 in different directions. Tooth portion 321; the first magnetic member 62 is a permanent magnet, provided on the circumference of the commutating member 60, has an N pole and an S pole; the second magnetic member 70 is arranged opposite to the first magnetic member 62, The second magnetic member 70 is fixed on the rear side of the commutating member 60; the second magnetic member 70 is an electromagnet, which has an iron core 71 and two coils 72; the two coils 72 are adjacently wound around the The iron core 71 is connected to the battery of the wrench, and the two coils 72 have opposite magnetic pole directions after pressing the commutating button 22. The iron core 71 is placed on both sides and the center of the two coils 72. A magnetic pole portion 711 is protrudingly provided, and the magnetic pole portions 711 are arranged close to the first magnetic member 62. When the two coils 72 are conducted, the magnetic pole portions 711 on both sides have the same polarity, and the polarity of the central magnetic pole portion 711 is the same as that of the two The opposite side.

When in use, the ratchet tool 20 rotates and applies force to a workpiece or a sleeve (not shown) through the working part 322 of the ratchet 32, and the unidirectional rotation direction of the ratchet 32 passes through the position of the latch 40 To make changes, when you want to use, press the reversing button 22 to energize the coil 72, as shown in Figure 4, when the initial position is in the first position, the excitation of the two coils 72 is to make the left and right sides of the second magnetic member 70 The magnetic pole portion 711 on the right is the S pole, and the magnetic pole portion 711 at the center of the two coils 72 is the N pole. In the excited state, the N pole of the first magnetic member 62 will be attracted by the S pole of the left magnetic pole portion 711, and The S pole of the first magnetic member 62 is attracted by the N pole of the central magnetic pole portion 711, and the magnetic attraction and repulsion are used to drive the reversing member 60 to rotate clockwise, so that the holding portion 61 will move toward Move to the right, and the elastic catch is on the right of the reversing part 42, and pushes the catch 40 to move to the right. The catch 41 on the right half of the catch 40 will engage the ratchet part of the ratchet 32 321; To perform a commutation action, please refer to Figure 5, press the commutation button 22 to enable it to commutate the excitation current supplied to the two coils 72, and the magnetism of the two coils 72 will therefore commutate. The left and right magnetic pole portions 711 are converted into N poles, and the magnetic pole portion 711 at the center position becomes S pole, because the left magnetic pole portion 711 which is originally magnetically attracted to the N pole of the first magnetic member 62 is changed from the S pole Converted to N pole, and the central magnetic pole portion 711 originally magnetically attracted to the S pole of the first magnetic member 62 is turned from the N pole to the S pole, so that the first magnetic member 62 is aligned with the second magnetic member 70 in the original position. Generates the effect of magnetic repulsion, so that the commutating member 60 will rotate in a counterclockwise direction, so that the N pole of the first magnetic member 62 will be replaced by the magnetic pole of the S pole at the center of the iron core 71 of the second magnetic member 70 Part 711 is magnetically attracted, and the S pole of the first magnetic part 62 will be magnetically attracted by the N pole part 711 at the right side of the iron core 71 of the second magnetic part 70, the commutating part 60 will generate a counterclockwise Rotation in the direction, the holding part 61 will move to the left, and the elastic latching to the left of the reversing part 42, the latching part 41 on the left half of the latching member 40 will engage the ratchet of the ratchet 32 The portion 321 causes the ratchet wheel 32 to change the direction of force.

To perform a reversing action, press the reversing button 22 to change the direction of the exciting current again, so that the coil of the second magnetic member 70 produces a different magnetic direction, and the first magnetic member 62 will repel each other because of the same sex. , The opposite sex attracts each other to produce reverse rotation, so that the reversing member 60 rotates in a clockwise direction, and the holding portion 61 also rotates in a clockwise direction, so that the holding portion 61 is elastically supported on the card by changing the direction. The right side of the reversing portion 42 of the latch 40 makes the teeth 41 of the right half of the latch 40 engage on the ratchet portion 321 of the ratchet wheel 32 to change the rotation direction of the ratchet wheel 32.

The position of the magnetic pole portion 711 of the iron core 70 of the second magnetic member 70 is fixed, so the position of the first magnetic member 62 of the commutator 60 is fixed by the magnetic attraction, so that the rotation angle of the commutator 60 is Fixed, so that the angle at which the latch 40 engages with the ratchet wheel 32 each time is fixed, and the reversing action can be performed reliably.

Please refer to Figures 6 and 7, which is the second preferred embodiment of the ratchet tool 20 provided by the present invention. The main structure of the ratchet tool 20 is the same as that of the first preferred embodiment. among them:

The first magnetic member 62 has only a single magnetic pole, as in this embodiment, it is an N pole. The iron core 71 of the second magnetic member 70 has only a coil 72, and both ends of the iron core 71 are respectively provided with a magnetic pole portion 711. Through the attraction or repulsion of a single magnetic pole, the reversing member 60 can also be turned.

Please refer to Figures 8 and 9, which is the third preferred embodiment of the ratchet tool 20 provided by the present invention. The main structure of the ratchet tool 20 is the same as that of the first preferred embodiment. among them:

The head 21 has a ratchet part 212 in the inner ring of the chamber 211, and the rotating member 30 is pivoted in the chamber 211, which is a working head 33. The working head 33 is provided with a working part that can interact with The work piece or sleeve (not shown) is connected. The front side of the working head 33 is recessed with an embedding groove 332 and an arc groove 333, and the latch 40 is pivoted in the chamber 211 and can be rotated. The tooth portion 41 is capable of engaging and fixing the ratchet tooth portion 212 around the inner circumference of the chamber 211; the reversing member 60 and the second magnetic member 70 of the reversing device 50 are respectively arranged in the insertion groove 332 and the arc groove 333 The reversing member 60 can rotate in the slot 332, and the coil 72 of the second magnetic member 70 is energized by the battery, and the magnetic direction changes, so that the reversing member 60 can rotate and change the direction. The action, in turn, drives the latching member 40 to produce an engaging effect in different directions. In addition, the head 21 is pivotally mounted on a frame 80 and driven by a power eccentric device 81 that can be driven by electric power or fluid pressure, and is not limited, so that the head 21 can be driven by The frame 80 swings at a small angle. Through the continuous deflection and driving of the power eccentric device 81, the head 21 is continuously driven to swing left and right at a small angle on the frame 80, so that the rotating member 30 pivoted in the head 21 A small-angle rotation and force application can be performed. When the reversing member 60 rotates, the detent member 40 is driven to shift to the left or right, so that the detent member 40 engages with the detent part 41 on the left or right side. The ratchet part 212 of the chamber 211 can control the rotation direction of the working head 33.

Please refer to FIG. 10, which is the ratchet tool 20 of the fourth preferred embodiment provided by the present invention. The main structure of the ratchet tool 20 is the same as that of the third preferred embodiment.

Wherein, the second magnetic member 70 is fixed on the working head 33, and the reversing member 60 slightly protrudes from the insertion groove 332, so that the first magnetic member 62 is located above the working head 33, and It can interact with the second magnetic member 70; the second magnetic member 70 can be easily installed and adjusted the position of the magnetic attraction.

The electric reversing ratchet tool provided by the present invention is expected to change the position of the reversing element through the magnetic change between the first magnetic element and the second magnetic element, thereby adjusting the rotation direction of the ratchet mechanism. Compared with the conventional need to adjust the direction by turning the hand, the reversing member of the present invention can directly perform the reversing action by manipulating the magnetic change of the electromagnetic, which can isolate the internal mechanism of the chamber from the outside and keep the interior clean. In addition, there is no need to remove the head from the operating position when changing directions, which can reduce the time for changing directions.

The above-mentioned embodiments are merely illustrative of the technical means of the present invention rather than limiting. Any equivalent modification of the present invention should be regarded as the protection scope of the present invention. The ratchet tool of the present invention is the first structure in this field, and has the improvement of practical effect, and the application is filed in accordance with the law.

10: Ratchet structure

11: Ratchet

12: Locking teeth

13: Reversing button

20: Ratchet tool

21: head

211: Room

212: Ratchet

22: Reversing button

30: Rotating parts

32: Ratchet

321: Ratchet

322 Work Department 33 Working head 332 Embedding groove 333 Arc groove 40 Card catch 41 Card tooth department 42 Reversing department 50 Reversing device 60 Reversing part 61 Supporting department 62 First magnetic part 70 Second magnetic part Iron core 711 Magnetic pole part 72 Coil 80 Frame 81 Power eccentric device

In order to enable your reviewer to further understand the purpose, features, and effects of the present invention, four preferred embodiments are listed below, which will be described in detail in conjunction with the drawings. Among them: Figure 1 is a cross-sectional view of a reversing structure of a conventional ratchet wrench. Figure 2 is a perspective view of a ratchet tool according to a preferred embodiment of the present invention. Fig. 3 is a partial cross-sectional view of the ratchet tool of Fig. 1; Figure 4 is a schematic diagram of the first direction magnetic attraction action of the ratchet tool. Figure 5 is a schematic diagram of the second direction magnetic attraction action of the ratchet tool. Fig. 6 is a partial cross-sectional view of the ratchet tool according to the second preferred embodiment of the present invention. FIG. 7 is a schematic diagram of another magnetic movement direction of the ratchet tool according to the second preferred embodiment of the present invention. Fig. 8 is a partial cross-sectional view of the ratchet tool according to the third preferred embodiment of the present invention. 9 is a schematic view of the rotation of the ratchet tool in the third preferred embodiment of the present invention in the opposite direction to that of FIG. 8. Fig. 10 is a side sectional view of the ratchet tool according to the fourth preferred embodiment of the present invention.

20 Ratchet tool 21 Head 211 Room 30 Rotating parts 32 Ratchets 321 Ratchet teeth 322 Work Department 40 Card catch 41 Card tooth department 42 Reversing department 421 Groove 50 Reversing device 60 Reversing part 61 Supporting part 62 First magnetic part 70 Second magnetic part Iron core 711 Magnetic pole part 72 Coil

Claims (10)

An electric reversing ratchet tool, including: On one head, there is a chamber; A ratchet mechanism is arranged in the accommodation chamber and has a rotating part and a latching part. The rotating part rotates on a central axis; the latching part can be displaced in the accommodation chamber, and the latching part is unidirectionally latched The rotating part makes the rotating part rotate in one direction; A reversing device, arranged in the containing chamber of the head, has a reversing piece and a second magnetic piece; the reversing piece can be displaced in the containing room, a holding portion and a first magnetic piece, provided In the reversing member, the holding portion holds the latching member; the second magnetic member is opposite to the first magnetic member; one of the first magnetic member and the second magnetic member is a permanent magnet, and the other is a permanent magnet Electromagnet; the electromagnet can change the magnetism, produce a magnetic repulsion or attraction between the permanent magnet, and can drive the displacement of the commutator, and the holding part of the commutator will drive the catch Displacement to different positions can change the direction of rotation of the rotating part. The ratchet tool according to claim 1, wherein: the first magnetic member is a permanent magnet; the second magnetic member is an electromagnet, the electromagnet includes at least one coil and an iron core, the coil It is wound on the iron core. The ratchet tool according to claim 2, wherein: the iron core is provided with a magnetic pole part protruding on both sides of the coil, and the magnetic pole part is arranged on the side close to the permanent magnet. The ratchet tool according to any one of claims 1 to 3, wherein: the permanent magnet has a single polarity, and the electromagnet has two different polarities. The ratchet tool according to any one of claims 1 to 3, wherein the permanent magnet has at least two different polarities, and the electromagnet has at least three magnetic poles, and two adjacent magnetic poles have different polarities. The ratchet tool according to claim 1, wherein: the rotating member is a ratchet, the outer ring is provided with a ratchet part, and the center of the ratchet is provided with a working part; the latch and the ratchet part At least one locking tooth part is arranged on the opposite surface so that it can engage with the ratchet tooth part; the locking part is arranged between the rotating part and the reversing device. The ratchet tool according to claim 1, wherein: the side wall ring of the chamber of the head is provided with a ratchet part, the rotating member is a working head arranged in the chamber, and a working part is arranged on the working head, the The locking member is pivotally arranged in the chamber, and one side of the locking member facing the ratchet part is provided with at least one tooth part so that it can engage with the ratchet part; the reversing device is attached to the rotating part Within the piece. The ratchet tool according to claim 7, wherein: the working head is recessed with an embedding groove on the side close to the locking member, so that the reversing member can be pivoted in the embedding groove, and the holding portion faces For the locking piece, the first magnetic piece faces the working head; the second magnetic piece is fixed on the working head opposite to the first magnetic piece. The ratchet tool according to claim 8, wherein: the working head is recessed with an arc groove, the arc groove is close to the circumferential side of the insertion groove; the second magnetic member is fixed in the arc groove. The ratchet tool according to claim 1, wherein the head is connected with a power eccentric device, and the power eccentric device can drive the head to swing.

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