drive device

Abstract

According to one aspect of the present invention, a handheld drive device for trimming or cutting an object is provided. The drive device has a housing, a locking member, a trigger lever, and an actuating part. The housing extends from the rear side where the user is located to the front side where the object is located. The locking member is configured to move between a first position and a second position, with a straight line connecting the first and second positions extending in the extending direction of the housing or in a direction perpendicular to the extending direction of the housing. The trigger lever is configured to move between a third position and a fourth position, wherein movement to the fourth position is restricted when the locking member is in the first position, and movement to the fourth position is unrestricted when the locking member is in the second position. The actuating part is located at the front side of the housing and is configured to drive the object when the trigger lever is in the fourth position, thereby applying a mechanical force to the object for trimming or cutting the object.

Description

Technical Field

[0001] This invention relates to a driving device. Background Technology

[0002] Safety standards for handheld drive devices used for trimming or cutting grass and trees are becoming increasingly stringent, and they are designed to connect to power by independently operating a locking lever (locking component) and a trigger lever.

[0003] Patent document 1 discloses a technology configured to enter a locked state by simultaneously operating a locking lever (holding component) and a button (locking component), and to turn on the power based on the operation of a trigger lever.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: US Patent No. 9,636,792 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in the technology disclosed in Patent Document 1, in order to turn on the power of the drive device, it is necessary to operate the locking lever (locking component) and the button (holding component) at the same time, which is a rather cumbersome operation.

[0009] Solution for solving the problem

[0010] According to one aspect of the present invention, a handheld drive device for trimming or cutting an object is provided. The drive device has a housing, a locking member, a trigger lever, and an actuating part. The housing extends from the rear side where the user is located to the front side where the object is located. The locking member is configured to move between a first position and a second position, with a straight line connecting the first and second positions extending in the extending direction of the housing or in a direction perpendicular to the extending direction of the housing. The trigger lever is configured to move between a third position and a fourth position, wherein movement to the fourth position is restricted when the locking member is in the first position, and movement to the fourth position is unrestricted when the locking member is in the second position. The actuating part is located at the front side of the housing and is configured to drive the object when the trigger lever is in the fourth position, thereby applying a mechanical force to the object for trimming or cutting the object.

[0011] Based on the output operation of such a drive device, power can be switched on by operating the trigger lever after the locking component has been operated. Therefore, the operability of the drive device can be further improved. Attached Figure Description

[0012] Figure 1 This is a three-dimensional diagram representing a rough outline of the lawnmower 11.

[0013] Figure 2 This is a cross-sectional view showing the structure of the housing 2 of the lawnmower 11.

[0014] Figure 3 This is a cross-sectional view of the gripping part 7, showing the locking component 4 in a locked (operationally restricted) state.

[0015] Figure 4 This is a cross-sectional view of the gripping part 7, showing the locking component 4 in the locked (operation released) state.

[0016] Figure 5 This is a cross-sectional view showing the elastic body of the locking component 4 and the retaining component 6.

[0017] Figure 6 This is a schematic diagram showing the locking (operation restriction) state and mechanism of the locking member 4a, trigger rod 5a and holding member 6a in the second embodiment.

[0018] Figure 7 This is a schematic diagram showing the locked (operation released) state and mechanism of the locking member 4a, trigger rod 5a and holding member 6a in the second embodiment.

[0019] Figure 8 This is a cross-sectional view showing the elastic body of the trigger rod 5a and the holding member 6a in the second embodiment.

[0020] Figure 9 The diagram shows the holding part 7, which connects the trigger lever 5 and the holding component 6, represented using triangulation. Detailed Implementation

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The various features shown in the embodiments described below can be combined with each other.

[0022] 1. Overall Structure

[0023] In Chapter 1, the drive device of this embodiment will be described. The drive device 1 is a handheld device for trimming or cutting objects. The drive device 1 is preferably a lawnmower 11 or a chainsaw (not shown). The following description will take a lawnmower 11 (drive device 1) as an example.

[0024] Figure 1 This is a three-dimensional diagram showing a rough outline of the lawnmower 11. (Example) Figure 1 As shown, the lawnmower 11 has a housing 2 and an operating part 3. Figure 2 This is a cross-sectional view showing the structure of the housing 2 of the lawnmower 11. (Example) Figure 2As shown, the lawnmower 11 has a locking component 4, a trigger lever 5, a retaining component 6, a grip 7, and a limit switch 8. The grip 7 can be part of the housing 2 or can be set independently. Furthermore, the locking component 4, the trigger lever 5, or the retaining component 6 can be connected to the grip 7.

[0025] 1.1 Shell 2

[0026] In this embodiment, the housing 2 is a box that houses the mechanical and electrical equipment for operating the lawnmower 11, including the operating lever of the lawnmower 11. Therefore, the housing 2 extends from the rear side where the user is located to the front side where the user is located. The length of the housing 2 is not particularly limited, but since the user is assumed to be an adult, an appropriate length suitable for an adult's height is preferred. In this way, by using a long, tubular operating lever as the housing, the user can effectively mow weeds and the like on the ground while walking in a natural posture without having to bend over. In addition, the housing 2 contains a motor, shaft, and other equipment (not shown), configured to connect with and transmit power to the blade of the action part 3 described later.

[0027] 1.2 Functional Part 3

[0028] In the lawnmower 11, the action part 3 is located on the front side of the housing 2. The action part 3 is configured to drive, so as to impart mechanical action to the object for trimming or cutting. Therefore, the action part 3 has a blade for trimming or cutting the object. The blade can be configured to be rotary driven or linear driven.

[0029] 1.3 Locking component 4

[0030] Figure 3 This is a cross-sectional view of the gripping part 7, showing the locking component 4 in a locked (operationally restricted) state. Figure 4 This is a cross-sectional view of the gripping part 7, showing the locking component 4 in the locked (operation released) state. For example... Figure 3 as well as Figure 4 As shown, the locking component 4 is connected to the housing 2 and is configured to move between a first position P1 and a second position P2. The straight line connecting the first position P1 and the second position P2 extends in the extending direction of the housing 2. The material, size, shape, and other construction of the locking component 4 are not limited, as long as the user can operate the locking component 4. Furthermore, the locking component 4 has a first elastic body 41, a first protrusion 42, and a second protrusion 43. Here, an elastic body refers to an object with elastic properties.

[0031] Figure 5 This is a cross-sectional view showing the elastic body of the locking component 4 and the retaining component 6. (See diagram below.) Figure 5As shown, the locking member 4 has a first elastic body 41 between itself and the housing 2. Since one end of the first elastic body 41 abuts against the housing 2, the first elastic body 41 exerts a force on the locking member 4 from the second position P2 towards the first position P1. Therefore, as long as it is not pressed, the locking member 4 is in the position of the first position P1. The first elastic body 41 can be any other spring, such as a compression coil spring or a leaf spring, or it can be made of an elastic material such as rubber or an elastomer. Furthermore, the physical properties of the first elastic body 41, such as its spring constant and Young's modulus, are not limited.

[0032] With the locking component 4 in position 1 P1, the first protrusion 42 abuts against the trigger lever 5, and with the locking component 4 in position 1 P1, the second protrusion 43 abuts against the retaining component 6. Thus, with the locking component 4 in position 1 P1, the movement of the trigger lever 5 and the retaining component 6 is restricted by the abutments of the first protrusion 42 and the second protrusion 43 against the trigger lever 5 and the retaining component 6, respectively. Therefore, unless the user presses the locking component 4 to move it from position 1 P1 to position 2 P2, the lawnmower 11 is in a locked (operationally restricted) state. Thus, even if the user or an object accidentally touches the locking component 4, the locked (operationally restricted) state will not be released, and the lawnmower 11 will not be accidentally driven.

[0033] 1.4 trigger lever 5

[0034] The trigger lever 5 is connected to the housing 2 and is configured to move between position 3 P3 and position 4 P4. However, when the locking member 4 is in position 1 P1, the movement of the trigger lever 5 to position 4 P4 is restricted, while when the locking member 4 is in position 2 P2, the movement of the trigger lever 5 to position 4 P4 is unrestricted. Therefore, the range of movement of the trigger lever 5 is limited depending on the position of the locking member 4. With this structure, the trigger lever 5 is configured not to drive the actuating part 3 when in position 3 P3, but to drive the actuating part 3 when in position 4 P4. Although the material, size, shape, and other construction of the trigger lever 5 are not limited, as long as the user can operate the trigger lever 5, a fin-shaped lever is preferred for operability.

[0035] 1.5 Retaining component 6

[0036] The retaining member 6 is connected to the housing 2 and is configured to move between position 5 P5 and position 6 P6. When the locking member 4 is in position 1 P1, the movement of the retaining member 6 towards position 6 P6 is restricted. Conversely, when the locking member 4 is in position 2 P2, the movement of the retaining member 6 towards position 6 P6 is unrestricted. Therefore, after the locking member 4 is pressed and moved from position 1 P1 to position 2 P2, when the retaining member 6 is in position 6 P6, the movement of the locking member 4 can be restricted. That is, the locked (operation released) state is maintained. Although the material, size, shape, and other construction of the retaining member 6 are not limited, as long as the user can operate the retaining member 6, considering operability, a fin-shaped rod is preferred.

[0037] like Figure 5 As shown, the retaining member 6 has a second elastic body 61 between itself and the housing 2. The second elastic body 61 exerts a force on the retaining member 6 from the sixth position P6 to the fifth position P5. Thus, the retaining member 6 is moved to the sixth position P6 by being pressed. After the movement, the retaining member 6, in the state of being in the sixth position P6, abuts against the second protrusion 43, thereby restricting the movement of the locking member 4 from the second position P2 to the first position P1. Thus, the locked (operation released) state is maintained by the user continuously pressing the retaining member 6. As a result, the movement of the trigger lever 5 between the third position P3 and the fourth position P4 is unrestricted, allowing the user to drive or stop the lawnmower 11. Here, the second elastic body 61 can be as follows: Figure 5 The torsion bar (torsion spring) shown can also be any other spring, such as a compression coil spring or leaf spring, and can also be made of elastic materials such as rubber or an elastomer. Furthermore, the physical properties of the second elastic body 61, such as spring constant and Young's modulus, are not limited.

[0038] 1.6 Control Section 7

[0039] The grip 7 is the part that the user holds when operating the lawnmower 11. In this embodiment, the grip 7 is not limited to the part held by the user's hand, but also includes the area around it. Therefore, the locking member 4 for operating the lawnmower 11 can be connected to the grip 7 and moved from the first position P1 to the second position P1 by applying force. When the locking member 4 is moved by the hand holding the lawnmower 11, the operability is improved because the range of movement is small.

[0040] Similarly, the trigger lever 5 can be connected to the grip 7 and pressed to move from position 3 P3 to position 4 P4. For example... Figures 2 to 5As shown, by connecting the trigger lever 5 to the upper or lower part of the grip 7, the user can move the trigger lever 5 while holding the lawnmower 11. Additionally, the retaining member 6 can be connected to the grip 7 opposite the trigger lever 5 and can be pressed to move from position 5 P5 to position 6 P6. By connecting the retaining member 6 to the opposite grip 7, the user can move the grip 7 and the retaining member 6 simultaneously or independently.

[0041] 1.6 Limit Switch 8

[0042] A limit switch 8 is positioned between the locking member 4 and the trigger lever 5. The limit switch 8 is a mechanically operated switch, an electrical switch that functions to open and close a circuit (not shown) attached to the lawnmower 11. Therefore, in this embodiment, when the locking member 4 moves to the second position P2 and the trigger lever 5 moves to the fourth position P4, the limit switch 8 mechanically operates, energizing the circuit (not shown) to drive the actuating part 3. Because the limit switch 8 has high mechanical strength and excellent environmental resistance, it is preferably used in devices such as the lawnmower 11 that experience vibration during operation and are used outdoors.

[0043] 2. Second Implementation Method

[0044] In this chapter, the second embodiment will be described. In the second embodiment, the straight line connecting the locking member 4 of the lawnmower 11 at the first position P1 and the second position P2 extends in a direction perpendicular to the extending direction of the housing 2. Details that are repeated in the above embodiment will be omitted as appropriate.

[0045] Figure 6 This is a schematic diagram showing the locking (operation restriction) state and mechanism of the locking member 4a, trigger rod 5a and holding member 6a in the second embodiment. Figure 7 This is a schematic diagram showing the locked (operation released) state and mechanism of the locking member 4a, trigger lever 5a, and holding member 6a in the second embodiment. As shown in the figures, the second embodiment has the same constituent elements as the embodiment described above.

[0046] The differences between the second embodiment and the embodiment described above will be explained below. The locking member 4a has a cylindrical protrusion (not shown) that engages with a cylindrical recess (not shown) in the housing 2. Through this engagement, the cylindrical protrusion can move axially. Therefore, the locking member 4a can move linearly between a first position P1a and a second position P2a. Here, the straight line connecting the first position P1a and the second position P2a extends in a direction perpendicular to the extending direction of the housing 2.

[0047] Similar to the embodiment described above, the locking member 4a has a first protrusion 42a and a second protrusion 43a. Therefore, when the locking member 4a is in the first position P1a, the first protrusion 42a and the second protrusion 43a abut against a portion of the trigger lever 5a and a portion of the retaining member 6a, respectively, to restrict their movement. Consequently, the trigger lever 5a remains in the third position P3, and the retaining member 6a remains in the fifth position P5.

[0048] The locking member 4a is pressed and moves from position 1 P1a to position 2 P2a. When the locking member 4a is in position 2 P2a, the first protrusion 42a and the second protrusion 43a do not abut against the trigger lever 5a and the retaining member 6a, respectively. Specifically, since the first protrusion 42a is in a state where it can enter the hollow portion 44a formed within the trigger lever 5a, it does not abut against the trigger lever 5a, and the second protrusion 43a, by moving, does not abut against the retaining member 6a. This creates a locked (operation released) state. Therefore, the trigger lever 5a can move from position 3 P3 to position 4 P4. When the trigger lever 5a moves from position 3 P3 to position 4 P4, it abuts against the limit switch 8, energizing the circuit and driving the actuating part 3. On the other hand, while holding member 6a in the state of moving from position 5 P5 to position 6 P6, a portion of holding member 6a abuts against the second protrusion 43a, thereby restricting the movement of locking member 4a.

[0049] As described above, when the locking member 4a is in the first position P1a, the movement of the trigger rod 5 and the holding member 6a is restricted; however, when the locking member 4a is in the second position P2a, the movement of both is unrestricted. Thus, the mechanism that generates a locked (operation restricted) state and a locked (operation released) state based on the position of the locking member 4a is the same as in the embodiment described above.

[0050] Figure 8 This is a cross-sectional view showing the elastic body of the trigger lever 5a and the retaining member 6a in the second embodiment. Similar to the embodiment described above, since the locking member 4a has an elastic body (not shown), it is pressed and moves from the first position P1a to the second position P2a. On the other hand, as... Figure 8 As shown, both the trigger lever 5a and the retaining member 6a are constrained by the third elastic body 61a. Therefore, the retaining member 6a is pressed and moves from position 5 P5a to position 6 P6a. The trigger lever 5a is also pressed and moves from position 3 P3a to position 4 P4a.

[0051] Thus, the mechanism for forming the locked (operation restricted) state and the locked (operation released) state in the above embodiment is the same as that in the second embodiment. The linear movement direction of the locking member 4 is determined by taking into account various conditions such as the technical specifications, purpose, and operating environment of the drive device 1.

[0052] 3. Structure of the output operation unit (handling unit 7) of the lawnmower 11 (drive unit 1)

[0053] The locking component 4, trigger lever 5, and retaining component 6, which are related to the output operation of the lawnmower 11, are connected to the handle 7 and operated by the user. Therefore, these components require a configuration and structure that allows for good operability. As described above, the locking component 4 is configured to move in the extending direction of the housing 2. This is because after the locking component 4 moves from the first position P1 to the second position P2, the lock is released, and the operation of the trigger lever 5 and retaining component 6, which are also located in the extending direction of the housing 2, can be performed quickly.

[0054] Therefore, the movement of the locking component 4 from the first position P1 to the second position P2 can be either linear or rotational, as long as it is in the extension direction of the housing 2 or in a direction perpendicular to the extension direction of the housing 2.

[0055] Next, the trigger lever 5 and the retaining member 6 are preferably connected to the grip portion 7 and operated by the user with one hand. Specifically, this configuration allows at least one of the index, middle, ring, and little fingers to press the trigger lever 5 when the user grips the grip portion. Then, the retaining member 6 is connected to the grip portion 7 opposite the trigger lever 5, and is configured such that at least one of the user's thumb, palm, and ball of the thumb can press the retaining member 6.

[0056] Figure 9 This diagram uses triangulation to represent the gripping part 7 that connects the trigger lever 5 and the retaining component 6. The structure and configuration of the trigger lever 5 and the retaining component 6, centered on the retaining component 6, are determined with the user's operability in mind.

[0057] like Figure 9 As shown, although the trigger lever 5 and the retaining member 6 are preferably fin-shaped for operability, they are not limited to this.

[0058] Considering the size and shape of the user's hand, it is best that the user can grip the handle 7 as naturally as possible and operate the trigger lever 5 and the holding part 6. Therefore, its dimensions are preferably designed according to the following data.

[0059] The ratios (trigger rod height H2 / trigger rod length L2) and (holding component height H3 / holding component length L3) of the fin-shaped trigger rod 5 and holding component 6 are preferably greater than 0 and less than 1. Therefore, the values ​​of (trigger rod height H2 / trigger rod length L2) and (holding component height H3 / holding component length L3) are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19. 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0 0.48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0. 76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, or any value between any two of the values ​​shown above.

[0060] Regarding the ratio of the height of the trigger lever 5 or the holding member 6 to the height of the gripping part 7, (trigger lever height H2 / grip height H1) and (holding member height H3 / grip height H1) are preferably greater than 0 and less than 1. Therefore, the values ​​of (trigger lever height H2 / grip height H1) and (holding member height H3 / grip height H1) are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0. 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0. 48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0. 76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, or any value between any two of the values ​​shown above.

[0061] Regarding the ratio of the width of the trigger lever 5 or the holding member 6 to the width of the gripping part 7, (trigger lever width W2 / grip part width W1) and (holding member width W3 / grip part width W1) are preferably greater than 0 and less than 1. Therefore, the values ​​of (trigger lever width W2 / grip part width W1) and (holding member width W3 / grip part width W1) are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0. 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0. 48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0. 76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, or any value between any two of the values ​​shown above.

[0062] As described above, the trigger lever 5 is operated by at least one of the index, middle, ring, and little fingers, and the holding member 6 is operated by at least one of the thumb, palm, and thumb ball. Therefore, considering the positional relationship between the fingers and parts performing these operations, the trigger lever 5 is preferably positioned 1f further forward than the holding member 6.

[0063] Regarding the ratio of the length of the trigger rod 5 to the length of the holding member 6 and the distance from the front end of the trigger rod 5 to the rear end of the holding member 6, (holding member length L3 / total length L23 from the front end of the trigger rod to the rear end of the holding member) and (trigger rod length L2 / total length L23 from the front end of the trigger rod to the rear end of the holding member) are preferably greater than 0 and less than 1. Therefore, the values ​​of (holding member length L3 / total length L23 from the front end of the trigger rod to the rear end of the holding member) and (trigger rod length L2 / total length L23 from the front end of the trigger rod to the rear end of the holding member) are 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, 0.15 , 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0. 45, 0.46, 0.47, 0.48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, or any value between any two of the values ​​shown above.

[0064] 3. Operational procedures related to driving the lawnmower 11

[0065] In this chapter, the operation process related to driving the lawnmower 11 will be described in chronological order. Table 1 is a state transition table of the components that drive the lawnmower 11. The components of the above embodiment will be described below based on the table.

[0066] [Table 1]

[0067]

[0068] 3.1 State transition of locking component 4, trigger lever 5 and holding component 6

[0069] In position mode A1, locking member 4 is in position 1, P1. Trigger lever 5 is in position 3, P3, and retaining member 6 is in position 5, P5. In this state, for safety reasons, the movement of trigger lever 5 and retaining member 6 is restricted. This is the so-called locked (operationally restricted) state. This is also the state in which the lawnmower 11 is not in use. Specifically, the first protrusion 42 and the second protrusion 43 of locking member 4 abut against trigger lever 5 and retaining member 6, respectively. This configures trigger lever 5 to move from position 3, P3 to position 4, P4, and retaining member 6 to move from position 5, P5 to position 6, P6.

[0070] The locking member 4 has a first elastic body 41 that applies force from the second position P2 toward the first position P1. This prevents the locking member 4 from accidentally moving from the first position P1 to the second position P2. Thus, the locking member 4 is configured to move from the first position P1 to the second position P2 by being pressed by the user from the front side 1f toward the rear side 1r.

[0071] In position mode A2, locking component 4 is in position 2, P2. Trigger lever 5 is in position 3, P3, and holding component 6 is in position 5, P5. Thus, locking component 4 is in position 2, P2, the so-called locked (operation released) state. Therefore, the restriction on the movement of trigger lever 5 and holding component 6 is released.

[0072] In position mode A3, locking component 4 is in position 2, P2. Trigger lever 5 is in position 4, P4, and holding component 6 is in position 5, P5. In this state, moving trigger lever 5 to position 4, P4 energizes the circuit (not shown) of the lawnmower 11, which is located between locking component 4 and trigger lever 5, thus actuating the actuator 3. In this locked (operation released) state, the user needs to continuously press locking component 4 and hold trigger lever 5 in position 4, P4.

[0073] In position mode A4, locking member 4 is in position 2, P2. Trigger lever 5 is in position 3, P3, and retaining member 6 is in position 6, P6. In this state, a portion of retaining member 6 abuts against the second protrusion 43 of locking member 4, restricting the movement of locking member 4.

[0074] In position mode A5, locking member 4 is in position 2, P2. Trigger lever 5 is in position 4, P4, and holding member 6 is in position 6, P6. In this state, a portion of holding member 6 abuts against the second protrusion 43 of locking member 4, restricting movement of locking member 4. That is, the locked (operation released) state is maintained. Moving trigger lever 5 to position 4, P4 energizes the circuit (not shown) of lawnmower 11, located between locking member 4 and trigger lever 5, thus driving actuating member 3.

[0075] 3.2 Driving operation process of lawnmower 11

[0076] By moving the locking component 4 from position 1 P1 to position 2 P2, the system transitions from position mode A1 to position mode A2, entering the locked (operation released) state. In this state, only the trigger lever 5 moves from position 3 P3 to position 4 P4, entering position mode A3 to drive the actuator 3. Furthermore, while moving the trigger lever 5 in this way, or by setting a time difference, the user can also move the holding component 6 from position 5 P5 to position 6 P6, entering position mode A5 and driving the actuator 3. The former is a useful function when the actuator 3 can be quickly driven without temporarily operating the holding component 6. The latter is a useful function when the holding component 6 remains in the locked (operation released) state due to the restriction on the movement of the locking component 4.

[0077] To maintain the locked state, the user presses the holding member 6, moving it from position 5 P5 to position 6 P6. This transitions from position mode A2 to position mode A4 or A5. In this case, the holding member 6 can move from position 5 P5 to position 6 P6 independently of the movement of the trigger lever 5, entering position mode A4 or A5. This allows the user to operate the lawnmower 11 flexibly.

[0078] In this continued locked (operation released) state, the user can move and operate the trigger lever 5 to drive or stop the actuator 3. If a foreign object such as a stone is detected, the user can quickly stop the actuator 3 by operating only the trigger lever 5. In this way, the user can be protected from injury caused by broken stones or other objects.

[0079] 4. Other

[0080] The above-described implementation methods can also be carried out in various other ways.

[0081] (1) The lawnmower 11 (drive unit 1) may have a current control mechanism. For example, by incorporating a variable resistor in the housing 2, the current value can be changed when the trigger lever 5 moves between the first position P1 and the second position P2. Flexible lawn mowing can be achieved by changing the mechanical energy used to trim or cut the object.

[0082] (2) The lawnmower 11 (drive unit 1) may also be equipped with an abnormality detection mechanism. If the abnormality detection mechanism detects that the load on the actuating part 3 is too large, it forcibly moves the locking part 4 from the second position P2 to the first position P1 to stop the lawnmower 11. This further ensures safety.

[0083] (3) The lawnmower 11 (drive unit 1) may also be equipped with a mechanism that, when the locking member 4 moves to the first position P1, causes the retaining member 6 to move to the fifth position P5 in conjunction. When the locking member 4 is in the first position P1, i.e., in a locked (operation restricted) state, the retaining member 6 is in the sixth position P6. When the locking member 4 moves to the second position P2, it is in a locked (operation released) state. The retaining member 6 is then in the fifth position P5 and can move between the fifth position P5 and the sixth position P6. When the lawnmower 11 is not being operated, the retaining member 6 does not need to be touched.

[0084] (4) The straight line connecting the first position P1 and the second position P2 of the locking component 4 can also extend in a direction oblique to the extending direction of the housing 2. From the user's point of view, it is preferable to determine the moving direction of the locking component 4 according to the purpose, specifications, and usage environment of the drive device 1.

[0085] Furthermore, the present invention can also be provided in various other ways.

[0086] In the drive device, the locking member has a first elastic body between itself and the housing, the first elastic body exerts force on the locking member in the direction from the second position to the first position, and is configured to move from the first position to the second position by being pressed in the direction from the front side to the rear side.

[0087] The drive device also includes a retaining member configured to move between a 5th position and a 6th position. When the locking member is in the 1st position, the movement of the retaining member toward the 6th position is restricted. When the locking member is in the 2nd position, the movement of the retaining member toward the 6th position is unrestricted. The device is configured such that when it is in the 6th position, the movement of the locking member can be restricted.

[0088] The drive device also includes a gripping part, a locking member connected to the gripping part, which is moved from the first position to the second position by force, a trigger rod connected to the gripping part, which is pressed and moved from the third position to the fourth position, and a holding member connected to the gripping part opposite the trigger rod, which is pressed and moved from the fifth position to the sixth position.

[0089] In the drive device, the locking member has a first protrusion, which is configured to abut against the trigger rod when the locking member is in the first position, thereby restricting the trigger rod from moving from the third position to the fourth position.

[0090] In the drive device, the locking member has a second protrusion, and the retaining member abuts against the second protrusion when it is in the sixth position, thereby restricting the locking member from moving from the second position to the first position.

[0091] In the drive device, the retaining member has a second elastic body between itself and the housing, the second elastic body exerting a force on the retaining member from the sixth position to the fifth position.

[0092] The drive device also includes a limit switch, which is disposed between the locking member and the trigger rod. When the locking member moves to the second position and the trigger rod moves to the fourth position, the circuit is energized to drive the actuating part.

[0093] Of course, it's not limited to this.

[0094] Finally, although various embodiments of the present invention have been described, these embodiments are merely illustrative and are not intended to limit the scope of the invention. The present invention can also be implemented through various other embodiments, and any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. Related embodiments or variations should not only be included within the scope or spirit of the present invention, but also within the scope of the invention as described in the claims and their equivalents.

[0095] Brief explanation of symbols

[0096] 1: Drive unit

[0097] 11: Lawn mower

[0098] 1f: Front side

[0099] 1r: Rear side

[0100] 2: Shell

[0101] 3: Functional part

[0102] 4: Locking components

[0103] 4a: Locking component

[0104] 41: First elastic body

[0105] 42: First protrusion

[0106] 42a: First protrusion

[0107] 43: Second protrusion

[0108] 43a: Second protrusion

[0109] 44a: Hollow section

[0110] 5: Trigger lever

[0111] 5a: Trigger lever

[0112] 6: Retaining components

[0113] 6a: Retaining component

[0114] 61: Second elastic body

[0115] 61a: Third elastic body

[0116] 7: Control Department

[0117] 8: Limit switch

[0118] H1: Height of the grip section

[0119] H2: Trigger rod height

[0120] H3: Maintain component height

[0121] L1: Length of the gripping part

[0122] L2: Trigger rod length

[0123] L23: Total Length

[0124] L3: Maintain component length

[0125] P1: Position 1

[0126] P1a: Position 1

[0127] P2: Position 2

[0128] P2a: Position 2

[0129] P3: Position 3

[0130] P4: Position 4

[0131] P5: Position 5

[0132] P6: Position 6

[0133] W1: Width of the holding part

[0134] W2: Width of trigger lever

[0135] W3: Maintain component width

Claims

1. A hand-held drive device for trimming or cutting off objects, characterized in that have: Housing, locking mechanism, trigger lever, and actuating part; The housing extends from the rear side where the user is located to the front side where the object is located; The locking member is configured to move between a first position and a second position, and the straight line connecting the first position and the second position extends in the extension direction of the housing or in a direction perpendicular to the extension direction of the housing. The trigger lever is configured to move between position 3 and position 4. With the locking component in the first position, movement to the fourth position is restricted. With the locking component in the second position, movement to the fourth position is unrestricted; The actuating part is disposed on the front side of the housing, and when the trigger rod is in the fourth position, it is configured to drive, so as to impart a mechanical force to the object for trimming or cutting the object. The drive device also has a holding component. The retaining member is configured to move between position 5 and position 6. With the locking member in the first position, the movement of the retaining member to the sixth position is restricted. With the locking component in the second position, the movement of the retaining component to the sixth position is unrestricted. The retaining member is configured to restrict the movement of the locking member when the retaining member is in the sixth position, and the trigger lever is movable between the third position and the fourth position.

2. A hand-held drive device for trimming or cutting off objects, characterized in that have: Housing, locking mechanism, trigger lever, and actuating part; The housing extends from the rear side where the user is located to the front side where the object is located; The locking member is configured to move between a first position and a second position, and the straight line connecting the first position and the second position extends in the extension direction of the housing or in a direction perpendicular to the extension direction of the housing. The trigger lever is configured to move between position 3 and position 4. With the locking component in the first position, movement to the fourth position is restricted. With the locking component in the second position, movement to the fourth position is unrestricted; The actuating part is disposed on the front side of the housing, and when the trigger rod is in the fourth position, it is configured to drive, so as to impart a mechanical force to the object for trimming or cutting the object. The drive device also has a holding component. The retaining member is configured to move between position 5 and position 6. With the locking member in the first position, the movement of the retaining member to the sixth position is restricted. With the locking component in the second position, the movement of the retaining component to the sixth position is unrestricted. The retaining member is configured to restrict the movement of the locking member when the retaining member is in the sixth position. The drive device also has a gripping part. The locking component is connected to the gripping part and is moved from the first position to the second position by an applied force. The trigger lever is connected to the grip and is pressed to move from the third position to the fourth position. The retaining member is connected to the gripping part opposite the trigger rod and is pressed to move from the 5th position to the 6th position.

3. A hand-held drive device for trimming or cutting off objects, characterized in that have: Housing, locking mechanism, trigger lever, and actuating part; The housing extends from the rear side where the user is located to the front side where the object is located; The locking member is configured to move between a first position and a second position, and the straight line connecting the first position and the second position extends in the extension direction of the housing or in a direction perpendicular to the extension direction of the housing. The trigger lever is configured to move between position 3 and position 4. With the locking component in the first position, movement to the fourth position is restricted. With the locking component in the second position, movement to the fourth position is unrestricted; The actuating part is disposed on the front side of the housing, and when the trigger rod is in the fourth position, it is configured to drive, so as to impart a mechanical force to the object for trimming or cutting the object. The drive device also has a holding component. The retaining member is configured to move between position 5 and position 6. With the locking member in the first position, the movement of the retaining member to the sixth position is restricted. With the locking member in the second position, the movement of the retaining member to the sixth position is unrestricted; however, when in the sixth position, the movement of the locking member can be restricted. The locking component has a second protrusion. The retaining member abuts against the second protrusion when it is in the sixth position, thereby restricting the locking member from moving from the second position to the first position.

4. The driving device according to any one of claims 1 to 3, characterized in that, The locking component A first elastic body is provided between the locking member and the housing, the first elastic body exerting a force on the locking member from the second position toward the first position. It is configured to move from the first position to the second position by being pressed in a direction from the front side to the rear side.

5. The driving device according to claim 1 or 3, characterized in that, It also has a holding part, The locking component is connected to the gripping part and is moved from the first position to the second position by an applied force. The trigger lever is connected to the grip and is pressed to move from the third position to the fourth position. The retaining member is connected to the gripping part opposite the trigger rod and is pressed to move from the 5th position to the 6th position.

6. The driving device according to any one of claims 1 to 3, characterized in that, The locking component has a first protrusion. The first protrusion is configured to abut against the trigger rod when the locking member is in the first position, thereby restricting the trigger rod from moving from the third position to the fourth position.

7. The driving device according to claim 1 or 2, characterized in that, The locking component has a second protrusion. The retaining member abuts against the second protrusion when it is in the sixth position, thereby restricting the locking member from moving from the second position to the first position.

8. The driving device according to any one of claims 1 to 3, characterized in that, The retaining member has a second elastic body between itself and the housing, the second elastic body exerting a force on the retaining member from the sixth position toward the fifth position.

9. The driving device according to any one of claims 1 to 3, characterized in that, It also has limit switches. The limit switch is positioned between the locking component and the trigger rod. When the locking component moves to the second position and the trigger rod moves to the fourth position, the circuit is energized to drive the actuating part.

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