Combination manual and electric ratchet screwdriver

Abstract

The present invention relates to a combination manual and electric ratchet screwdriver and, more specifically, to a combination manual and electric ratchet screwdriver which has an additional ratchet function of rotating in a desired direction without the need to remove a hand from the combination manual and electric ratchet screwdriver or separate a bit attached to the screwdriver from a workpiece, and in which the direction of rotation can be changed by a simple operation of a lever.

Description

Manual and electric ratchet driver

[0001] The present invention relates to a manual and electric ratchet driver, and more particularly, to a manual and electric ratchet driver having a ratchet function that allows the driver to rotate in a desired direction without having to take one's hand off the driver or detach a bit connected to the driver from a workpiece, and in which the direction of rotation can be easily changed by simply operating a lever.

[0002] Tools for drivers are used to tighten or loosen screws, bolts, etc., and are generally used as cross (+) or flat (-) screwdrivers, wrenches, and spanners.

[0003] These tools are used to fix and disassemble parts of equipment, and have been widely distributed in industrial sites and homes depending on the type of work site.

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

[0005] The driver rotates the screw by applying force vertically or horizontally while the screw head and the groove of the driver are engaged. A manual driver is a screwdriver that the worker performs this work directly, and an electric driver is a screwdriver equipped with a motor and is mainly used for tightening bolts.

[0006] In the case of manual drivers, precise work is possible, but there is a problem of high labor consumption. In the case of automatic drivers, work efficiency is high, but precise work is difficult, and if the power supply is wired, there are problems such as low mobility and efficiency, and if it is wireless, it is heavy and has a small charging capacity.

[0007] To solve these problems, manual and electric dual-purpose drivers are being used.

[0008] However, when a conventional manual / electric dual-purpose screwdriver is used as an electric one and then wants to be changed to manual, or when a manual one is used and then wants to be changed to electric, if the range of motion of the arm during manual work is exceeded, that is, if a manual work of more than 360 degrees or one rotation is required, the hand holding the screwdriver must be released or the bit connected to the screwdriver must be separated from the workpiece, which reduces the continuity of the work and reduces the efficiency of the work.

[0009] The present invention has been conceived based on the above-described technical background, and its purpose is to provide a manual and electric ratchet driver with a ratchet function added to the manual and electric driver.

[0010] And the purpose is to provide a manual and electric ratchet driver that can easily change the rotation direction of the motor by simply operating the direction lever.

[0011] In addition, the purpose is to provide a manual and electric ratchet driver that can achieve maximum work efficiency with a simple configuration and relatively small parts.

[0012] In order to achieve the above object, the present invention comprises: a spindle connected to a motor and rotating, the spindle having a protrusion; a driving unit connected to the spindle and transmitting a rotational force to a socket coupled to a driver bit; a gear case having a cylindrical shape surrounding the spindle, the gear case including an opening having one side open in the longitudinal direction, and a cover covering the opening to form a cylindrical shape; a cross plate provided to cover the open part within the cover, the cross plate including a rotational portion rotatably coupled to both inner walls of the gear case, and a pair of ratchet plates including a projection protruding between partial projections of the protrusions from the cross plate to rotate or restrain the protrusions; a direction lever allowing one of the pair of ratchet plates to rotate, thereby enabling forward or reverse rotation of the protrusions; And a pair of lever springs provided on the lower surface of the directional lever to press and rotate the rotational portions of each pair of ratchet plates, wherein when the directional lever moves in one direction, the first lever spring presses the rotational portion of the first ratchet plate so that the protrusion of the first ratchet plate rotates upward, thereby rotating the protrusion in the forward direction, and when the directional lever moves in the other direction, the second lever spring presses the rotational portion of the second ratchet plate so that the protrusion of the second ratchet plate rotates upward, thereby rotating the protrusion in the reverse direction.

[0013] And according to a preferred embodiment of the present invention, the cover further includes a ratchet plate spring that is provided on the lower surface of the cover and presses the pair of ratchet plates to return one of the rotated ratchet plates, and the ratchet plate spring is characterized in that it has a stiffness lower than that of the lever spring.

[0014] In addition, according to a preferred embodiment of the present invention, each ratchet plate is shaped like the letter 'L' and has projections on both sides of the cross plate, and is rotatably coupled between the first grooves on both sides of the gear case and the second grooves of the corresponding part of the cover, and the projections of each ratchet plate are provided to face each other, and are characterized in that they are provided in opposite directions on each cross plate.

[0015] And according to a preferred embodiment of the present invention, it is characterized by further including a battery for supplying power to the motor, a USB charging port for charging the battery, and a lighting lamp provided at a position close to the driver bit and irradiating light to the end of the driver bit.

[0016] The present invention with the above-described configuration can expect the following effects.

[0017] In both manual and electric combination drivers, a ratchet function is added to allow rotation in the desired direction without the need to take one's hands off or detach the bit connected to the driver from the workpiece, which has the effect of significantly improving the worker's work efficiency.

[0018] Additionally, the rotation direction of the motor can be easily changed by simply operating the direction lever, which has the effect of improving work efficiency.

[0019] Additionally, it is possible to operate manually or electrically with a simple configuration and relatively small parts, and it even has a ratchet function, so it has the effect of achieving maximum work efficiency.

[0020] In addition, it is added that other effects of the present invention are encompassed in a wider range by the effects that can be easily derived from the embodiments described above and the matters described in the claims of the present invention, as well as the possibilities of potential advantages that contribute to industrial development.

[0021] FIG. 1 is a perspective view showing an example of a manual and electric ratchet driver according to the present invention.

[0022] FIG. 2a and FIG. 2b are a perspective view and an exploded perspective view showing the internal configuration of a manual and electric dual-purpose ratchet driver according to the present invention.

[0023] Figures 3a to 3c are drawings showing the internal configuration of a manual and electric ratchet driver according to the present invention in a standby state.

[0024] Figures 4a to 4c are drawings showing the internal configuration of a manual and electric dual ratchet driver according to the present invention in a forward rotation state.

[0025] FIGS. 5a to 5c are drawings showing the internal configuration of a manual and electric dual ratchet driver according to the present invention in a reverse rotation state.

[0026] <Explanation of symbols>

[0027] 100; Manual and electric ratchet driver

[0028] 10; spindle

[0029] 15; protrusion

[0030] 20; Drive unit

[0031] 21; motor

[0032] 30; Gear Case

[0033] 40; cover

[0034] 50; ratchet plate

[0035] 55; Ratchet plate spring

[0036] 60; Direction lever

[0037] 65; lever spring

[0038] 70; Driver Bit

[0039] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to the description, the advantages and features of the present invention and the methods for achieving them will be clarified by referring to the embodiments described in detail below together with the attached drawings. In addition, the terminology used in this specification is for the purpose of describing the embodiments and is not intended to limit the present invention. Among these terms, singular forms also include plural forms unless specifically stated in the text. It should be noted that words indicating directions in the description are intended to aid understanding of the description and may change depending on the time point.

[0040] Hereinafter, a manual and electric ratchet driver according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Fig. 1 is a perspective view showing an example of a manual and electric ratchet driver according to the present invention.

[0041] Referring to FIG. 1, a manual and electric dual-purpose ratchet driver (100) according to the present invention is provided with a driver case (1) having a power button (not shown), an electric operation button (61), a direction lever (60), and a bit holder (21) to which a driver bit (not shown) is coupled.

[0042] Figure 1 is shown as an example, and is not limited to this form, and the internal configurations described below can be provided, and any form is possible as long as it is easy for the worker to hold and work, and the direction lever (60) can also be applied in various forms such as a switch, button, twist (rotation) type, etc., rather than a lever form.

[0043] A lighting lamp (not shown) is provided at a location close to the driver bit, which illuminates the tip of the driver bit, thereby facilitating work in dark places or places requiring detailed work, thereby improving the worker's work efficiency.

[0044] The driver case (1) is equipped with internal components according to the present invention, and a motor, gearbox, battery, control circuit, etc. are built in.

[0045] Here, the battery may be a secondary battery capable of supplying stable power to the motor.

[0046] And it has a built-in control circuit to control operation and charging, thereby extending the life of the battery and enabling rapid charging.

[0047] In addition, the manual and electric dual ratchet driver (100) according to the present invention is equipped with a USB charging port, so that the battery provided in the driver case (1) can be easily charged.

[0048] Among the internal configurations of the driver case (1), the configuration according to the features of the present invention is illustrated in FIGS. 2a and 2b. FIGS. 2a and 2b are a perspective view and an exploded perspective view showing the internal configuration of a manual and electric dual ratchet driver according to the present invention.

[0049] Referring to FIGS. 2a and 2b, a manual and electric dual ratchet driver (100) according to the present invention is provided inside a driver case (1 of FIG. 1), and includes a spindle (10), a driving unit (20), a gear case (30), a ratchet plate (50), a ratchet plate spring (55), a direction lever (60), and a lever spring (65).

[0050] The spindle (10) is connected to a driving unit (20) connected to a motor (21) and rotates, and is provided with a projection (15) that engages with a ratchet plate (50) to perform a locking function.

[0051] The manual and electric dual-purpose ratchet driver (100) according to the present invention is driven by a motor (21) when driven electrically, and this is driven by power supplied from a power supply unit.

[0052] The driving part (20) connected to the motor (21) rotates, and the spindle (10) connected thereto rotates, resulting in the driver bit (70) rotating.

[0053] The driving unit (20) is connected to the spindle (10) and transmits rotational force to the driver bit (70).

[0054] The driving unit (20) may be a rotational reducer as a gearbox equipped with general configurations as shown in Fig. 2b, and may be composed of, for example, a plurality of shafts, carriers, planetary gears, etc., so that the rotational power of the motor (21) is transmitted to the driver bit (70).

[0055] The driving unit (20) can be equipped with various configurations to control deceleration through gear ratio and increase torque efficiency accordingly.

[0056] The gear case (30) is provided in a cylindrical shape to surround the spindle (10), and includes an opening (31) that is open on one side in the longitudinal direction, and a cover (40) that covers the opening (31) to form a cylindrical shape.

[0057] The gear case (30) is configured to allow the driving unit (20) to be coupled to the protruding rear end of the spindle (10) provided inside, and to stably fix the ratchet plate (50) that implements the ratchet function.

[0058] Inside the gear case (30), the spindle (10) rotates, and the projection (15) provided on the spindle (10), that is, the projection (15) that engages with the ratchet plate (50) and performs a locking function, also rotates.

[0059] In order to change the rotation direction of this projection (15), a ratchet plate (50), a ratchet plate spring (55), a direction lever (60), and a lever spring (65) are provided.

[0060] The internal configuration of the gear case (30) is illustrated in detail in FIGS. 3a to 3c. FIGS. 3a to 3c are drawings showing the internal configuration of the manual and electric ratchet driver according to the present invention in a standby state.

[0061] Ratchet plates (50; 50a, 50b) are provided to cover the opening (31) within the cover (40), and are provided as a pair facing each other.

[0062] That is, the ratchet plate (50) is a plate-shaped 'L' shape, as shown in detail in Fig. 3c, and is provided with protrusions (53) on both sides of the cross plate (52), so as to be rotatably coupled between the first grooves (35) on both sides of the gear case (30) and the second grooves (not shown) of the corresponding portion of the cover (40).

[0063] And each ratchet plate (50a, 50b) is provided with a protrusion (51) formed to protrude from the cross plate (52), and this protrusion (51) protrudes between the partial protrusions (15a) of the protrusions (15) to rotate or restrain the protrusions (15).

[0064] Here, the protrusions (51) of each ratchet plate (50a, 50b) are provided facing each other, but are provided in opposite directions on each cross plate (52).

[0065] That is, based on FIGS. 3b and 3c, the first ratchet plate (50a) is provided with a protrusion (51) at the lower portion of the horizontal plate (52), and the second ratchet plate (50b) is provided with a protrusion (51) at the upper portion of the horizontal plate (52).

[0066] Additionally, the ratchet plate (50) includes a rotating portion (54) having a projection (53) between the first groove (35) and the second groove to rotate.

[0067] The rotating part (54) is a part where the ratchet plate (50) is rotatably connected within the gear case (30), and is the opposite part of the cross plate (52) where the protrusion (51) is provided.

[0068] The rotating portion (54) of each ratchet plate (50) is provided with a lever spring (65) at the top. The rotating portion (54) of one ratchet plate (50) is pressed by the lever spring (65), and the protrusion (51) of the corresponding ratchet plate (50) rotates, thereby changing the rotational direction of the projection (15). This will be described below.

[0069] Meanwhile, the ratchet plate (50) is provided with a ratchet plate spring (55) on each cross plate (52), and the ratchet plate spring (55) has an elastic force that applies a force to press the ratchet plate (50) downward.

[0070] That is, the ratchet plate spring (55) presses the ratchet plate (50) when the ratchet plate (50) is rotated by the movement of the direction lever (60), and when the direction lever (60) is returned, the ratchet plate (50) can be returned to its original position.

[0071] At this time, when the direction lever (60) is moved to rotate in a specific direction, the ratchet plate (50) must be maintained in a rotated state in order to proceed with the work while the rotation in that direction is maintained. Therefore, the ratchet plate spring (55) must be less rigid than the lever spring (65).

[0072] Here, the ratchet plate spring (55) is illustrated as an example of a plate spring having elasticity, but it is not limited to this form, and any shape of a spring having elasticity is possible.

[0073] The direction lever (60) allows one of the pair of ratchet plates (50) described above to rotate, thereby enabling forward or reverse rotation of the projection (15).

[0074] The direction lever (60) is provided with a pair of lever springs (65; 65a, 65b) on the lower surface, and each lever spring (65) presses the rotating part (54) of each ratchet plate (50) to rotate it.

[0075] That is, referring to FIG. 3b, a hole provided on one side of the first lever spring (65a) is combined with a protrusion (not shown) provided on a corresponding portion of the lower surface of the direction lever (60), and a hole provided on the other side of the second lever spring (65b) is combined with a protrusion (not shown) provided on a corresponding portion of the lower surface of the direction lever (60).

[0076] Due to the combination of the directional lever (60) and the lever spring (65), the movement of the directional lever (60), i.e., movement in one direction or the other direction, causes the first lever spring (65a) or the second lever spring (65b) to be pressed.

[0077] Here, the lever spring (65) is illustrated as an example of a plate spring having elasticity, but it is not limited to this form, and any shape of a spring having elasticity is possible.

[0078] The first lever spring (65a) provided on the lower surface of the direction lever (60) is provided on the rotating portion (54) of the first ratchet plate (50a), and the second lever spring (65b) is provided on the rotating portion (54) of the second ratchet plate (50b).

[0079] And, by the movement of the direction lever (60), the first lever spring (65a) presses the rotational part (54) of the first ratchet plate (50a) to rotate the first ratchet plate (50a), or the second lever spring (65b) presses the rotational part (54) of the second ratchet plate (50b) to rotate the second ratchet plate (50b).

[0080] Here, the direction lever (60) is illustrated as an example of a form that moves in a straight direction, but it is not limited to this form, and various forms such as a switch or twist method are possible.

[0081] Drawings showing the forward or reverse rotation state of the protrusion (15) by the movement of the direction lever (60) are shown in FIGS. 4a to 4c and FIGS. 5a to 5c.

[0082] FIGS. 4a to 4c are drawings showing the internal configuration of a manual and electric dual-purpose ratchet driver according to the present invention in a forward rotation state, and FIGS. 5a to 5c are drawings showing the internal configuration in a reverse rotation state.

[0083] That is, as shown in Fig. 4a, when the direction lever (60) is moved in one direction, for example, downward as indicated by arrow A with respect to the drawing, the protrusion (15) rotates in the forward direction as indicated by arrow D shown in Fig. 4c.

[0084] At this time, as the direction lever (60) moves, as shown in Fig. 4b, the lever spring (65), for example, the first lever spring (65a), is pressed downward as indicated by arrow B, thereby rotating the first ratchet plate (50a) as indicated by arrow C.

[0085] And as shown in Fig. 4b, the second ratchet plate (50b) is maintained in a standby state, so that the protrusion (51) of the second ratchet plate (50b) is between the partial protrusions (15a) of the projections (15).

[0086] In this way, the rotated first ratchet plate (50a) does not affect the rotation of the projection (15), and the second ratchet plate (50b) restrains the projection (15) from rotating in the reverse direction, and when the projection (15) rotates in the forward direction, the second ratchet plate (50b) is lifted and rotated by the partial projection (15a).

[0087] That is, as shown in Fig. 4c, the protrusion (15) rotates only in the forward direction as indicated by arrow D.

[0088] And as shown in Fig. 5a, when the direction lever (60) is moved in another direction, for example, upward as shown by arrow E with respect to the drawing, the protrusion (15) rotates in the reverse direction as shown by arrow H in Fig. 5c.

[0089] At this time, as the direction lever (60) moves, as shown in Fig. 5b, the lever spring (65), for example, the second lever spring (65b), is pressed downward as indicated by arrow F, thereby rotating the second ratchet plate (50b) as indicated by arrow G.

[0090] And as shown in Fig. 5b, since the first ratchet plate (50a) is maintained in a standby state, the protrusion (51) of the first ratchet plate (50a) is located between the partial protrusions (15a) of the projections (15).

[0091] In this way, the rotated second ratchet plate (50b) does not affect the rotation of the projection (15), and 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 first ratchet plate (50a) is lifted and rotated by the partial projection (15a).

[0092] That is, as shown in Fig. 5c, the protrusion (15) rotates only in the reverse direction as indicated by arrow H.

[0093] The above description is merely an illustrative description of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications, changes, and substitutions may be made without departing from the essential characteristics of the present invention. In addition, as described above, the embodiments disclosed in the present invention and the attached drawings are not intended to limit the technical idea of ​​the present invention, but rather to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments and the attached drawings. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A spindle that is connected to a motor and rotates, and is equipped with a protrusion; A driving unit that is connected to the spindle and transmits rotational force to a socket that is engaged with a driver bit; A gear case having a cylindrical shape to surround the spindle, the gear case including an opening having one side open in the longitudinal direction, and a cover that covers the opening to form a cylindrical shape; A pair of ratchet plates, which are provided to cover the opening within the cover, and which include a cross plate having a pivot portion rotatably coupled to both inner walls of the gear case, and a protrusion protruding between the partial protrusions of the protrusions from the cross plate to rotate or restrain the protrusions; A directional lever that allows forward or reverse rotation of the projection by causing one of the pair of ratchet plates to rotate; and It includes a pair of lever springs which are provided on the lower surface of the above direction lever and which press the rotational portion of each pair of ratchet plates to rotate them; When the directional lever moves in one direction, the first lever spring presses the rotational portion of the first ratchet plate, so that the protrusion of the first ratchet plate rotates upward, thereby rotating the projection in the forward direction. A manual and electric ratchet driver, characterized in that when the directional lever is moved in the other direction, the second lever spring presses the rotating portion of the second ratchet plate, so that the protrusion of the second ratchet plate rotates upward, thereby rotating the projection in the reverse direction.

2. In paragraph 1, It further includes a ratchet plate spring which is provided on the lower surface of the cover and presses the pair of ratchet plates so that one of the rotated ratchet plates returns. A manual and electric ratchet driver, characterized in that the ratchet plate spring has a lower rigidity than the lever spring.

3. In paragraph 1, Each of the above ratchet plates is shaped like the letter 'L' and has projections on both sides of the cross plate, so that it is rotatably connected between the first grooves on both sides of the gear case and the second groove of the corresponding part of the cover. A manual and electric ratchet driver characterized in that the protrusions of each of the ratchet plates are provided facing each other, but are provided in opposite directions from each of the cross plates.

4. In paragraph 1, A battery that supplies power to the above motor, A USB charging port for charging the above battery, and A manual and electric ratchet driver, characterized in that it further includes a lighting lamp provided at a position close to the driver bit and irradiating light to the end of the driver bit.

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