Manual and electric ratchet screwdriver

Abstract

The present invention relates to a manual and electric ratchet screwdriver, and more particularly to a manual and electric ratchet screwdriver that has a ratchet function added that allows it to rotate in a desired direction without releasing the hand from the manual and electric screwdriver or separating the beat connected to the screwdriver from the workpiece, and the direction of rotation can be easily changed with the operation of a simple lever.

Description

Technical Field

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[0001] The present invention relates to a manual and electric dual-purpose ratchet driver. More specifically, the present invention relates to a manual and electric dual-purpose driver with an added ratchet function that rotates in a desired one-way direction without releasing the hand from the driver or separating the bit connected to the driver from the work object, and the rotation direction can be easily changed by simply operating a lever.

Background Art

[0002] Driver tools are used for tightening and loosening screws, bolts, etc., and are generally used with cross (+) or flat (-) drivers, wrenches, spanners, etc.

[0003] Such tools are used for fixing and disassembling parts of a device and have been widely popularized in industrial sites and households according to various work site forms.

[0004] Here, the driver operates manually or electrically, that is, it is divided into a manual driver that works manually and an electric driver that utilizes the power of an electric motor.

[0005] The driver is rotated while applying a vertical or horizontal force in a state where the groove of the screw head and the tip of the driver part are engaged. The manual driver directly performs such work by the operator, and the electric driver is a screwdriver equipped with a motor and is mainly used for tightening bolts.

[0006] Although the manual driver enables delicate work, it has the problem of high human power consumption. Although the electric driver has high work efficiency, it is difficult to perform delicate work. When the power supply is wired, the mobility and efficiency are poor, and when it is wireless, there are problems such as heavy weight and low charge amount.

[0007] To solve these problems, a manual and electric screwdriver is used.

[0008] However, conventional manual and electric screwdrivers have a problem in that when switching from electric to manual operation, or vice versa, if the manual operation requires work that exceeds the range of motion of the arm, i.e., 360-degree rotation or more, the user must release their grip on the screwdriver or detach the screwdriver's connecting bead from the workpiece. This reduces the continuity of the work and consequently decreases work efficiency. [Problems the invention aims to solve]

[0009] The present invention was devised based on the above-described technical background, and aims to provide a manual and electric ratchet screwdriver that also has a ratchet function added to a manual and electric screwdriver.

[0010] Furthermore, the objective is to provide a manual and electric ratchet screwdriver that allows for easy change of the motor's rotation direction by simply operating the direction lever.

[0011] Furthermore, the aim is to provide a manual and electric ratchet screwdriver that can achieve maximum work efficiency with a simple configuration and relatively small parts. [Means for solving the problem]

[0012] To achieve the above objective, the present invention provides: a spindle connected to a motor and having a projection that rotates; a drive unit connected to the spindle and transmitting rotational force to a socket bound to a driver beat; a gear case provided in a cylindrical shape to surround the spindle, including an open portion having one side open in the longitudinal direction and a cover that covers the open portion and forms a cylindrical shape; a pair of ratchet plates provided within the cover to cover the open portion and including a rotating portion that is rotatably coupled to both inner walls of the gear case, and a projection that protrudes from the horizontal plate between the partial projection of the projection and rotates or restrains the projection; and either of the pair of ratchet plates rotates The device includes a directional lever that enables the projection to rotate in the forward or reverse direction; and a pair of lever springs provided on the lower surface of the directional lever that push and rotate the rotating portion of each pair of ratchet plates, wherein when the directional lever is moved in one direction, the first lever spring pushes the rotating portion of the first ratchet plate, causing the projection of the first ratchet plate to rotate upward, thereby rotating the projection in the forward direction; and when the directional lever is moved in the other direction, the second lever spring pushes the rotating portion of the second ratchet plate, causing the projection of the second ratchet plate to rotate upward, thereby rotating the projection in the reverse direction.

[0013] Furthermore, according to a preferred embodiment of the present invention, the cover further includes a ratchet plate spring provided on the lower surface of the cover, which pushes the pair of ratchet plates to return either of the rotated ratchet plates to its original position, wherein the ratchet plate spring is less rigid than the lever spring.

[0014] Furthermore, according to a preferred embodiment of the present invention, each ratchet plate is in the shape of an "L"-shaped plate, has projections on both sides of the horizontal plate, is rotatably coupled between first grooves on both sides of the gear case and second grooves in corresponding portions of the cover, and the projections of each ratchet plate are provided so as to face each other and are provided in opposite directions on each horizontal plate.

[0015] Furthermore, according to a preferred embodiment of the present invention, the invention further includes a battery for supplying power to the motor, a USB charging port for charging the battery, and an illumination lamp provided in close proximity to the driver beat for illuminating the end of the driver beat. [Effects of the invention]

[0016] The present invention, with the configuration described above, can be expected to have the following effects.

[0017] The addition of a ratchet function, which allows the driver to rotate in a desired direction without releasing their hand from the manual or electric screwdriver or separating the bead attached to the screwdriver from the workpiece, significantly improves the worker's efficiency.

[0018] Furthermore, the motor's rotation direction can be easily changed with a simple directional lever, which improves work efficiency.

[0019] Furthermore, its simple configuration and relatively small parts allow for both manual and electric drive, and the addition of a ratchet function maximizes work efficiency.

[0020] In addition, it should be added that other effects of the present invention are encompassed in a broader range, including not only those described in the embodiments and claims of the present invention, but also effects that can be easily inferred from them and the potential for provisional benefits that contribute to industrial development. [Brief explanation of the drawing]

[0021] [Figure 1] This is a perspective view showing an example of a manual and electric ratchet screwdriver according to the present invention. [Figure 2a] These are perspective views and exploded perspective views showing the internal structure of the manual and electric ratchet screwdriver according to the present invention. [Figure 2b]Perspective view and exploded perspective view showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention. [Figure 3a] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a standby state. [Figure 3b] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a standby state. [Figure 3c] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a standby state. [Figure 4a] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a forward rotation state. [Figure 4b] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a forward rotation state. [Figure 4c] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a forward rotation state. [Figure 5a] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a reverse rotation state. [Figure 5b] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a reverse rotation state. [Figure 5c] It is a diagram showing the internal structure of a manual and electric dual-purpose ratchet driver according to the present invention in a reverse rotation state.

Mode for Carrying Out the Invention

[0022] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Prior to the description, the advantages and features of the present invention, as well as how they are achieved, will become clear when referring to the embodiments described in detail below with reference to the accompanying drawings. Furthermore, the terms used herein are for the purpose of describing embodiments and are not intended to limit the present invention, and among such terms, singular forms include plural forms unless otherwise specified, and directional words used in the description are for the purpose of aiding the understanding of the description and are changeable depending on the perspective.

[0023] Hereinafter, preferred embodiments of the present invention, including a manual and electric ratchet screwdriver, will be described in detail with reference to the accompanying drawings. Figure 1 is a perspective view showing an example of a manual and electric ratchet screwdriver according to the present invention.

[0024] Referring to Figure 1, the manual and electric ratchet screwdriver 100 according to the present invention is equipped with a power button (not shown) and an electric operating button 61 in the screwdriver case 1, and a directional lever 60 and a bead holder 21 to which a screwdriver bead (not shown) is coupled.

[0025] Figure 1 is shown as an example and is not limited to this form. The internal configuration can be as follows, and any form is acceptable as long as it is easy for the worker to grasp and operate. The directional lever 60 may also be applied in various forms other than a lever, such as a switch, button, or twist (rotation) type.

[0026] A lighting lamp (not shown) is provided in close proximity to the driver bead, and by illuminating the edge of the driver bead with light, work in dark places or where detailed work is required becomes easier, thereby improving the worker's work efficiency.

[0027] The driver case 1 is equipped with the internal configuration according to the present invention, and incorporates a motor, gearbox, battery, control circuit, and the like.

[0028] Here, the battery may be a rechargeable battery capable of supplying a stable power source to the motor.

[0029] Furthermore, a control circuit is built in to control operation and charging, thereby extending battery life and enabling rapid charging.

[0030] Furthermore, the manual and electric ratchet screwdriver 100 according to the present invention is equipped with a USB charging port, allowing for easy charging of the battery located in the screwdriver case 1.

[0031] Figures 2a and 2b show the internal configuration of the driver case 1 according to the features of the present invention. Figures 2a and 2b are perspective views and exploded perspective views showing the internal configuration of a manual and electric ratchet screwdriver according to the present invention.

[0032] Referring to Figures 2a and 2b, the manual and electric ratchet screwdriver 100 according to the present invention is housed inside a screwdriver case (1 in Figure 1) and includes a spindle 10, a drive unit 20, a gear case 30, a ratchet plate 50, a ratchet plate spring 55, a directional lever 60, and a lever spring 65.

[0033] The spindle 10 rotates in connection with the drive unit 20, which is connected to the motor 21, and has a projection 15 that engages with the ratchet plate 50 to provide a locking function.

[0034] The manual and electric ratchet screwdriver 100 according to the present invention is driven by a motor 21 when it is driven electrically, which is powered by a power supply unit.

[0035] The drive unit 20 connected to the motor 21 rotates, and the spindle 10 connected to it rotates, which in turn causes the driver beat 70 to rotate.

[0036] The drive unit 20 is connected to the spindle 10 and transmits rotational force to the driver beat 70.

[0037] As shown in Figure 2b, the drive unit 20 is a gearbox with a general configuration, which may be a rotational reduction gear, and for example, it is composed of multiple shafts, carriers, planetary gears, etc., so that the rotational force of the motor 21 is transmitted to the driver beat 70.

[0038] The drive unit 20 can be provided in various configurations to adjust the reduction by the gear ratio and thereby increase the efficiency of torque.

[0039] The gear case 30 is cylindrical in shape and surrounds the spindle 10, and includes an open section 31 with one side open in the longitudinal direction, and a cylindrical cover 40 that covers the open section 31.

[0040] The gear case 30 is configured such that the drive unit 20 is coupled to the protruding rear end of the spindle 10 located inside, and the ratchet plate 50, which provides the ratchet function, is stably fixed in place.

[0041] Inside the gear case 30, the spindle 10 rotates, and the projection 15 on the spindle 10, that is, the projection 15 that engages with the ratchet plate 50 to provide a locking function, also rotates.

[0042] This is for changing the rotation direction of such projections 15, and is equipped with a ratchet plate 50, ratchet plate spring 55, direction lever 60, and lever spring 65, which will be described later.

[0043] The internal configuration of the gear case 30 is shown in detail in Figures 3a to 3c. Figures 3a to 3c show the internal configuration of the manual and electric ratchet screwdriver according to the present invention in its standby state.

[0044] The ratchet plates 50 (50a, 50b) are provided within the cover 40 so as to cover the opening 31 and are provided as a pair of opposing plates.

[0045] In other words, as shown in detail in Figure 3c, the ratchet plate 50 is L-shaped and has projections 53 on both sides of the horizontal plate 52, thereby rotatably connecting the first grooves 35 on both sides of the gear case 30 to the corresponding second grooves (not shown) of the cover 40.

[0046] Furthermore, each ratchet plate 50a, 50b is provided with a projection 51 formed to protrude from the horizontal plate 52, and such projection 51 protrudes between the partial projections 15a of the projection 15 to rotate or restrain the projection 15.

[0047] Here, the protrusions 51 of each ratchet plate 50a, 50b are arranged to face each other, and on each horizontal plate 52 they are arranged in opposite directions.

[0048] In other words, with reference to Figures 3b and 3c, the first ratchet plate 50a has a projection 51 extending downward from the horizontal plate 52, and the second ratchet plate 50b has a projection 51 extending upward from the horizontal plate 52.

[0049] Furthermore, the ratchet plate 50 includes a rotating part 54 that rotates, with a projection 53 provided between the first groove 35 and the second groove.

[0050] The rotating portion 54 is the part to which the ratchet plate 50 is rotatably coupled within the gear case 30, and is the part of the horizontal plate 52 opposite to the side on which the protrusion 51 is provided.

[0051] Each of the rotating parts 54 of such ratchet plates 50 is provided with a lever spring 65 at its top. The lever spring 65 pushes the rotating part 54 of any of the ratchet plates 50, causing the protruding part 51 of that ratchet plate 50 to rotate, thereby changing the direction of rotation of the projection 15. This will be explained later.

[0052] On the other hand, such a ratchet plate 50 is equipped with a ratchet plate spring 55 on each horizontal plate 52, and such a ratchet plate spring 55 has an elastic force that applies a downward force to the ratchet plate 50.

[0053] In other words, the ratchet plate spring 55 pushes the ratchet plate 50 when it has rotated due to the movement of the directional lever 60, so that the ratchet plate 50 can return to its original position when the directional lever 60 returns to its original position.

[0054] At this time, in order to continue the work while maintaining rotation in a specific direction when the direction lever 60 is moved, the ratchet plate 50 must remain in a rotated state, so the ratchet plate spring 55 must be less rigid than the lever spring 65.

[0055] Here, the ratchet plate spring 55 is illustrated as an example of an elastic leaf spring, but it is not limited to this form; any form of elastic spring is possible.

[0056] The directional lever 60 allows the projection 15 to rotate in the forward or reverse direction by causing one of the pair of ratchet plates 50 described above to rotate.

[0057] The directional lever 60 is equipped with a pair of lever springs 65 (65a, 65b) on its lower surface, and each lever spring 65 pushes the rotating portion 54 of each ratchet plate 50 to rotate.

[0058] Specifically, referring to Figure 3b, a hole on one side of the first lever spring 65a is connected to a projection (not shown) on a corresponding portion of the lower surface of the directional lever 60, and a hole on the other side of the second lever spring 65b is connected to a projection (not shown) on a corresponding portion of the lower surface of the directional lever 60.

[0059] This coupling between the directional lever 60 and the lever spring 65 causes the first lever spring 65a or the second lever spring 65b to be pressed when the directional lever 60 moves, i.e., when it moves in one direction or the other.

[0060] Here, the lever spring 65 is illustrated as an example of an elastic leaf spring, but it is not limited to this form; any form of elastic spring is acceptable.

[0061] The first lever spring 65a, located on the lower surface of the directional lever 60, is mounted on the rotating portion 54 of the first ratchet plate 50a, and the second lever spring 65b is mounted on the rotating portion 54 of the second ratchet plate 50b.

[0062] Furthermore, the movement of the directional lever 60 causes either the first lever spring 65a to push the rotating portion 54 of the first ratchet plate 50a, thereby rotating the first ratchet plate 50a, or the second lever spring 65b to push the rotating portion 54 of the second ratchet plate 50b, thereby rotating the second ratchet plate 50b.

[0063] Here, the directional lever 60 is illustrated as an example of a form that moves in a linear direction, but it is not limited to this form, and various forms such as switches and twist mechanisms are possible.

[0064] Figures 4a to 4c and 5a to 5c show the forward and reverse rotation states of the projection 15 due to the movement of the direction lever 60.

[0065] Figures 4a to 4c show the internal configuration of the manual and electric ratchet screwdriver according to the present invention in the forward rotation state, and Figures 5a to 5c show the internal configuration in the reverse rotation state.

[0066] In other words, as shown in Figure 4a, when the directional lever 60 is moved in one direction, for example, downwards as indicated by arrow A in the diagram, the projection 15 rotates in the positive direction as indicated by arrow D in Figure 4c.

[0067] At this time, as the directional lever 60 moves, the lever spring 65, for example, the first lever spring 65a, is pushed downward as shown by arrow B, as shown in Figure 4b, while the first ratchet plate 50a is rotated as shown by arrow C.

[0068] Furthermore, as shown in Figure 4b, since the second ratchet plate 50b remains in a standby state, the protrusion 51 of the second ratchet plate 50b is located between the partial protrusions 15a of the projection 15.

[0069] In this way, the rotated first ratchet plate 50a no longer affects the rotation of the projection 15, the second ratchet plate 50b restrains the projection 15 from rotating in the opposite direction, and when the projection 15 rotates in the forward direction, the partial projection 15a lifts the second ratchet plate 50b as it rotates.

[0070] In other words, as shown in Figure 4c, the projection 15 rotates only in the positive direction, as indicated by arrow D.

[0071] Furthermore, as shown in Figure 5a, when the directional lever 60 is moved in another direction, for example, upward as indicated by arrow E in the center of the drawing, the projection 15 rotates in the opposite direction as indicated by arrow H in Figure 5c.

[0072] At this time, as the directional lever 60 moves, the lever spring 65, for example, the second lever spring 65b, is pushed downward as indicated by arrow F, as shown in Figure 5b, causing the second ratchet plate 50b to rotate as indicated by arrow G.

[0073] Furthermore, as shown in Figure 5b, since the first ratchet plate 50a remains in a standby state, the protrusion 51 of the first ratchet plate 50a is located between the partial protrusions 15a of the projection 15.

[0074] In this way, the rotated second ratchet plate 50b no longer affects the rotation of the projection 15, the first ratchet plate 50a restrains the projection 15 from rotating in the forward direction, and when the projection 15 rotates in the reverse direction, the partial projection 15a lifts the first ratchet plate 50a as it rotates.

[0075] In other words, as shown in Figure 5c, the projection 15 rotates only in the opposite direction, as indicated by arrow H.

[0076] The above description is merely illustrative of the technical idea of ​​the present invention, and any person with ordinary skill in the art to which the present invention pertains can make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. Furthermore, as stated above, the embodiments and accompanying drawings disclosed herein are for illustrative purposes only, not to limit the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments and accompanying drawings. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within an equivalent scope should be interpreted as being included in the scope of the rights of the present invention. [Explanation of symbols]

[0077] 100 Manual and Electric Ratchet Screwdriver 10 spindles 15 Protrusions 20 Drive unit 21 Motor 30 Gear Case 40 Cover 50 Ratchet Plates 55 Ratchet Plate Springs 60-way joystick 65 Lever spring 70 Driver Beat

Claims

1. A spindle that rotates in connection with a motor and has protrusions; A drive unit that transmits rotational force to a socket connected to the spindle and bound to the driver beat; A gear case comprising a cylindrical opening surrounding the spindle, with one side open in the longitudinal direction, and a cylindrical cover that covers the opening; A pair of ratchet plates, each including a horizontal plate that covers the opening within the cover and includes a rotating portion that is rotatably coupled to both inner walls of the gear case, and a protruding portion that extends from the horizontal plate between the partial protrusions of the projection and rotates or restrains the projection; A directional lever that allows the projection to rotate in the forward or reverse direction, such that one of the pair of ratchet plates rotates; and A pair of lever springs provided on the lower surface of the directional lever, which push and rotate the rotating portion of each pair of ratchet plates; When the directional lever moves in one direction, the first lever spring pushes the rotating portion of the first ratchet plate, causing the protruding portion of the first ratchet plate to rotate upward, thereby rotating the projection in the forward direction. A manual and electric ratchet screwdriver characterized in that, when the directional lever is moved in another direction, the second lever spring pushes the rotating part of the second ratchet plate, causing the protruding part of the second ratchet plate to rotate upward, thereby rotating the projection in the opposite direction.

2. The cover further includes a ratchet plate spring provided on the lower surface of the cover, which pushes the pair of ratchet plates and returns either of the rotated ratchet plates to its original position. The manual and electric ratchet screwdriver according to claim 1, characterized in that the ratchet plate spring has less rigidity than the lever spring.

3. Each of the ratchet plates is L-shaped, with protrusions on both sides of the horizontal plate, and is rotatably coupled between first grooves on both sides of the gear case and second grooves in the corresponding portions of the cover. The manual and electric ratchet screwdriver according to claim 1, characterized in that the protrusions of each ratchet plate are provided so as to face each other and are provided in opposite directions on each of the horizontal plates.

4. A battery that supplies power to the motor, A USB charging port for charging the aforementioned battery, and The manual and electric ratchet screwdriver according to claim 1, further comprising an illumination lamp provided in close proximity to the driver bead and illuminating the end of the driver bead with light.

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