Trigger switch

Abstract

The invention provides a trigger switch capable of mounting / dismounting a trigger cap and high in safety. A trigger switch (TS) includes a trigger (1) capable of receiving press-in based on an operation of an operator and moving to a deepest position in a press-in direction. A trigger is provided with: a base shaft member (11) to which a trigger cap (10) is detachably attached; and a restricting member (14) that is operably supported by the base shaft member and that is capable of restricting the movement of the trigger. When a trigger having a trigger cap attached to a base shaft member receives a first press-in, movement of the restricting member in a restricting state at a restricting position that does not reach a deepest position is restricted, and the received first press-in is released, whereby the restricting member transitions from the restricting state to a restriction release state, and the restricting member is released from the deepest position. When a second press-in after the first press-in is released is received, the second press-in unit can be moved to the deepest position.

Description

Technical Field

[0001] The present invention relates to a trigger switch including a trigger receiving a push-in operation. Background Art

[0002] The trigger switch used in the operation of the electric tool includes a trigger that receives a pressing operation by the operator (for example, refer to Patent Document 1). The operator hooks a finger on the trigger and pulls (presses) the trigger, so that the trigger switch is activated and the electric tool operates. The trigger of the trigger switch includes, for example, a trigger cap for the operator's finger to hook and a base shaft member (plunger) that supports the trigger cap. In addition, in order to obtain an operating feel or appearance that suits the operator's preferences and to prevent improper use, trigger switches that can install / remove a trigger cap on the base shaft member have attracted much attention.

[0003] [Prior art literature]

[0004] [Patent Document]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2012-206248 Summary of the invention

[0006] [Problems to be solved by the invention]

[0007] A trigger switch that can attach and detach a trigger cap requires, for example, shutting off of the main power supply to prevent malfunction when the trigger cap is attached to the base shaft member, and various countermeasures have been proposed.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a trigger switch with high safety which can prevent malfunctions and the like.

[0009] [Technical means to solve the problem]

[0010] In order to solve the above-mentioned problem, a trigger switch is provided, comprising: a trigger capable of receiving a press based on an operation of an operator and moving to the deepest position in the pressing direction; and a frame body, which supports the trigger in a movable manner, wherein the trigger comprises: a trigger cap having a finger hook portion for hooking a finger of an operator; a base shaft member, which detachably mounts the trigger cap; and a limiting member, which is operably supported on the base shaft member and capable of limiting the movement of the trigger, wherein the base shaft member comprises: a mounting portion for mounting the trigger cap; and a shaft portion, which supports the mounting portion at one end side and is inserted into the frame body at the other end side, wherein when the trigger cap is removed, the trigger is in a restricted state by the limiting member, and the movement of the trigger at the restricted position that does not reach the deepest position is restricted, and when the trigger cap is mounted, the limiting member can be transferred between the restricted state and the restriction release state in which the restriction on the movement of the trigger is released.

[0011] In addition, in the trigger switch, when a first push is received, the trigger on which the trigger cap is mounted on the base shaft member is restricted in movement by the restriction member being in a restriction state, and when the first push is released, the restriction member is transferred from the restriction state restricting the movement of the trigger to a restriction released state, and when a second push is received after the first push is released, the trigger can be moved to the deepest position because the restriction member is in the restriction released state.

[0012] In addition, in the trigger switch, the frame has a locking portion that engages with the limiting member, and the limiting member has an locking portion that engages with the frame, and the limiting member performs the following actions: it transitions between a limiting state in which the locking portion engages with the locking portion of the frame relative to the movement of the trigger caused by pressing, and a limiting released state in which the locking portion does not engage with the locking portion of the frame relative to the movement of the trigger caused by pressing.

[0013] In addition, in the trigger switch, the limiting member is supported on the base shaft member in a manner capable of moving between a first position that becomes a limiting state and a second position, and the second position is capable of transferring between a limiting state and a limiting released state. When a first press is received, the limiting member that is in a limiting state at the first position moves from the first position to the second position while maintaining the limiting state. When the first press is released, the limiting member transfers from the limiting state to the limiting released state at the second position.

[0014] In addition, the trigger switch includes a force applying member that applies force to the limiting member, and the trigger cap has an abutment portion that abuts against the limiting member. When a first press is received, the trigger cap presses the limiting member using the abutment portion, and the limiting member overcomes the force of the force applying member and moves from the first position to the second position while being engaged with the locking portion. When the first press is released, the limiting member performs a swinging motion with the portion abutting against the abutment portion of the trigger cap as a fulcrum due to the force of the force applying member, thereby loosening the engagement with the locking portion and transferring from the limiting state to the restriction released state.

[0015] In addition, in the trigger switch, the limiting member has a swinging portion as a swinging axis, and is supported on the base shaft member in a manner capable of performing a swinging action with the swinging portion as the swinging axis. By removing the trigger cap from the base shaft member, the trigger cap is biased by the force applying member to move to the first position, and is biased by the force applying member to swing with the swinging portion as the swinging axis at the first position, thereby entering a restricted state.

[0016] [Effects of the Invention]

[0017] The trigger switch disclosed in the present application has excellent effects such as being able to improve safety such as preventing erroneous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic perspective view showing an example of the appearance of the electric device disclosed in the present application.

[0019] Figure 2 This is a schematic perspective view showing an example of the appearance of the trigger switch disclosed in the present application.

[0020] Figure 3 This is a schematic perspective view showing an example of the appearance of the trigger switch disclosed in the present application.

[0021] Figure 4 This is a schematic exploded perspective view showing an example of the trigger switch disclosed in the present application.

[0022] Figure 5 This is a schematic perspective view showing an example of a trigger included in the trigger switch disclosed in the present application.

[0023] Figure 6 This is a schematic perspective view showing an example of a trigger cap of a trigger included in the trigger switch disclosed in the present application.

[0024] Figure 7 This is a schematic perspective view showing an example of a base shaft member included in the trigger switch disclosed in the present application.

[0025] Figure 8This is a schematic perspective view showing an example of a base shaft member included in the trigger switch disclosed in the present application.

[0026] Fig. 9 This is a schematic perspective view showing an example of a restriction member included in the trigger switch disclosed in the present application.

[0027] Fig.10 This is a schematic perspective view showing an example of a restriction member included in the trigger switch disclosed in the present application.

[0028] Fig.11 This is a schematic perspective view showing an example of a disengagement prevention member included in the trigger switch disclosed in the present application.

[0029] Fig.12 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0030] Fig.13 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0031] Fig.14 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0032] Fig.15 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0033] Fig.16 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0034] Fig.17 This is a schematic cross-sectional view showing an example of the front portion of the trigger switch disclosed in the present application.

[0035] [Explanation of Symbols]

[0036] PT: Electric device

[0037] TS: Trigger Switch

[0038] 1: Trigger

[0039] 10: Trigger cap

[0040] 103: Contact Department

[0041] 11: Base shaft component

[0042] 110: Installation

[0043] 111: Axis

[0044] 14: Restriction components

[0045] 140: Extension

[0046] 141: Locking part

[0047] 142: Swinging part

[0048] 15: First force applying member

[0049] 16: Second force applying member

[0050] 2: Frame

[0051] 22: Stopper

[0052] 3: Switch lever

[0053] 4: Switching mechanism

[0054] 5: Opening and closing mechanism DETAILED DESCRIPTION

[0055] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0056] <Application Examples>

[0057] The trigger switch disclosed in the present application is applied to various electric devices represented by electric tools such as electric drills, electric drivers, electric wrenches, and electric grinders that include a driving part such as a motor. Hereinafter, the electric device PT illustrated in the drawings and the trigger switch TS installed in the electric device PT will be described with reference to the drawings.

[0058] <Electric device PT>

[0059] Figure 1 The electric device PT disclosed in the present application can be applied to electric tools such as electric drills, electric drivers, electric wrenches, and electric grinders, as well as various devices including a trigger switch TS, such as a water gun, a paint spray gun, and a model gun. Figure 1 The electric device PT illustrated in the figure has a shape in which a hand-held portion is installed on a roughly cylindrical main body portion that accommodates a driving portion such as an electric motor (not shown). A trigger switch TS used in the operation of the electric device PT is installed on the hand-held portion. In the following description, as shown in the figure, the direction of the roughly cylindrical main body portion is upward, and the direction of the hand-held portion is downward. In addition, the direction in which a rotating tool portion such as a drill bit is installed is front, and the direction in which the trigger switch TS is pressed in is rear. That is, in the trigger switch TS incorporated in the electric device PT, the direction from the front to the rear becomes the direction in which it is pressed in by the pressing operation. These directions are for the convenience of explanation, and do not limit the use direction of the electric device PT and the trigger switch TS.

[0060] <Trigger switch TS>

[0061] Next, the trigger switch TS included in the electric device PT will be described. Figure 2 1 is a schematic perspective view showing an example of the appearance of the trigger switch TS disclosed in the present application. The trigger switch TS includes components such as a trigger 1, a frame 2, and a switching lever 3.

[0062] The trigger 1 is a component that receives the pressing operation of the operator, and is assembled into the electric device PT in an exposed state in an operable manner. The trigger 1 can receive the pressing operation from the release position in the state where the pressing operation is not received and move to the deepest position in the pressing direction. The trigger 1 includes a trigger cap 10, and the trigger cap 10 has a finger hook portion 100 for the operator's finger to hook. The finger hook portion 100 of the trigger cap 10 is concavely curved to facilitate hooking of the finger. The frame 2 accommodates various components and is assembled into the interior of the electric device PT. The switching lever 3 is a component for switching the settings of the action direction, action mode, etc.

[0063] Figure 3 1 is a schematic perspective view showing an example of the appearance of the trigger switch TS disclosed in the present application. The trigger cap 10 included in the trigger 1 can be attached / detached. Figure 3 The trigger cap 10 is removed from the trigger 1. The trigger 1 further includes a base shaft member 11 supporting the trigger cap 10, a separation prevention member 12 preventing the trigger cap 10 attached to the base shaft member 11 from being separated, and a covering member 13 covering an exposed portion of the base shaft member 11.

[0064] Figure 4 It is a schematic exploded perspective view showing an example of the trigger switch TS disclosed in the present application. Figure 5 It is a schematic perspective view showing an example of the trigger 1 included in the trigger switch TS disclosed in the present application. Figure 5 The trigger 1 is shown from a viewpoint obliquely from the upper left in the front, with the trigger cap 10 and the covering member 13 removed. The trigger switch TS includes components such as the trigger 1, the frame 2, and the switching lever 3, and also includes mechanisms such as the switching mechanism 4 and the opening and closing mechanism 5. The trigger 1 includes components such as the trigger cap 10, the base shaft member 11, the separation prevention member 12, the covering member 13, and further includes components such as the limiting member 14, the first force applying member 15, and the second force applying member 16. Figure 5 The positional relationship among the base shaft member 11 , the separation preventing member 12 , and the restricting member 14 in the trigger 1 is shown in a visually recognizable manner.

[0065] Figure 6 It is a schematic perspective view showing an example of the trigger cap 10 of the trigger 1 included in the trigger switch TS disclosed in the present application. Figure 6The trigger cap 10 is shown from a rear right upper viewpoint, and the structure of the inner side as the base shaft member 11 side is shown in a visually recognizable manner. Figure 4 and Figure 6 The trigger cap 10 is described. The trigger cap 10 is a substantially rectangular parallelepiped and is formed in a hollow box shape, with the upper surface and the rear surface open. The trigger cap 10 has a stepped portion 101 formed on the inner bottom surface, which gradually rises from the rear end side (near the front side in the figure), and a through hole 102 is formed in front of the stepped portion 101 to penetrate the bottom surface. The stepped portion 101 has a function of guiding the trigger cap 10 and lifting the detachment prevention member 12 when the trigger cap 10 is mounted on the base shaft member 11. The through hole 102 has a function of allowing the detachment prevention member 12 to be embedded when the trigger cap 10 is mounted on the base shaft member 11 to prevent the trigger cap 10 from detaching. The detachment prevention member 12 embedded in the through hole 102 penetrates the through hole 102 and is exposed from the bottom of the trigger cap 10. The trigger cap 10 has an abutment portion 103 formed from the inner wall surface on the left side to the inner wall surface on the front side, which abuts against the limiting member 14. The contact portion 103 is formed at the corners of the left inner wall surface and the front inner wall surface to protrude inward in a fan-shaped shape in plan view, and contacts the restricting member 14 when the trigger cap 10 is mounted on the base shaft member 11 and in the mounted state.

[0066] Figure 7 and Figure 8 It is a schematic perspective view showing an example of the base shaft member 11 included in the trigger switch TS disclosed in the present application. Figure 7 The base shaft member 11 is shown from a viewpoint obliquely from the upper left in the front. Figure 8 The base shaft member 11 is shown from a perspective obliquely from the upper left rear side. Figure 4 , Figure 5 , Figure 7 and Figure 8The base shaft member 11 is described. The base shaft member 11 is a plunger having a mounting portion 110 for mounting the trigger cap 10 and a shaft portion 111 extending rearward from the mounting portion 110. The shaft portion 111 supports the mounting portion 110 at the front end (one end side), and the rear portion (the other end side) is inserted into the frame 2. The opening and closing mechanism 5 is installed at the rear end of the shaft portion 111 located in the frame 2. The mounting portion 110 located in the front is formed in a substantially rectangular parallelepiped shape. The mounting portion 110 is formed with a rod locking portion 112 in a substantially pentagonal shape on the upper surface thereof, which engages with the switching lever 3 and can lock the switching lever 3. The mounting portion 110 is formed with a pair of left and right guide pieces 113 on the lower surface thereof in a manner extending downward. The guide piece 113 guides the up and down movement of the disengagement prevention member 12. The mounting portion 110 is formed with a support portion 114 on the left side thereof, which supports the limiting member 14 in a manner that allows it to operate. The support portion 114 is formed as a substantially rectangular concave portion on the left side of the mounting portion 110. The front surface and the left side surface of the support portion 114 formed as a concave portion are open. The inner bottom surface and the inner top surface of the support portion 114 formed as a concave portion are formed as substantially parallel surfaces. The support portion 114 supports the limiting member 14 on the inner bottom surface and the inner top surface in a manner of clamping from above and below. The limiting member 14 is supported by the inner bottom surface and the inner top surface of the support portion 114, but is not fixed and can perform swinging movements, moving movements and the like. The rear side of the support portion 114 is formed into a shape that does not regulate the movement of the limiting member 14 supported by the support portion 114 even if it is guided. The support portion 114 has a substantially circular concave portion formed on the inner wall surface facing the limiting member 14, which is abutted by the first force-applying member 15.

[0067] Reference Figure 4 The covering member 13 is described. The covering member 13 is a flexible bellows that covers the shaft portion 111 of the base shaft member 11. The covering member 13 covers the portion of the shaft portion 111 of the base shaft member 11 that is exposed to the outside of the frame 2. The front end of the covering member 13 abuts against the rear surface of the mounting portion 110 of the base shaft member 11, and the rear end abuts against the front surface of the lower frame 2.

[0068] Fig. 9 and Fig.10 It is a schematic perspective view showing an example of the restriction member 14 included in the trigger switch TS disclosed in the present application. Fig. 9 The restricting member 14 is shown from a viewpoint obliquely from the upper left in the front. Fig.10 The restricting member 14 is shown from a perspective viewed from the upper right side in front. Figure 4 , Figure 5 , Fig. 9 and Fig.10The limiting member 14 will be described. The rear end of the extension portion 140 of the limiting member 14, which extends approximately forward and backward, is formed in a key shape bent to the left as a locking portion 141. The locking portion 141 is bent to have an obtuse angle relative to the extension direction of the extension portion 140. The locking portion 141 is engaged with the frame 2 according to the operation status of the limiting member 14. The extension portion 140 is formed with a roughly cylindrical swing portion 142 protruding up and down at a position about 1 / 3 from the front end. The swing portion 142 is clamped by the inner bottom surface and the inner top surface of the support portion 114 of the base shaft member 11, and functions as a swing axis, and performs a swinging action with the swing portion 142 as the swing axis. In addition, the swing portion 142 functions as a swing axis, but is not fixed in the support portion 114 of the base shaft member 11. In the state where the swing portion 142 is clamped by the inner bottom surface and the inner top surface, the limiting member 14 moves in the left and right direction intersecting the pressing direction, for example. The left side surface near the front end of the extension portion 140 of the limiting member 14 is inclined in stages. The limiting member 14 is formed with a substantially circular fitting recess 143 from the front end of the right side surface to the swing portion 142. One end of the first urging member 15 is fitted into the fitting recess 143. The first urging member 15 is formed using, for example, a compression coil spring, one end side of which is fitted into the fitting recess 143 of the limiting member 14, and the other end side of which abuts against the recess of the inner wall surface in the support portion 114 of the base shaft member 11, and urges the limiting member 14 to the left at one end side.

[0069] Fig.11 1 is a schematic perspective view showing an example of the separation prevention member 12 included in the trigger switch TS disclosed in the present application. Figures 4 to 8 as well as Fig.11 The disengagement prevention member 12 is described. The disengagement prevention member 12 has a button portion 120 in a quadrangular prism shape protruding downward at the lower portion. The disengagement prevention member 12 is guided by the guide piece 113 of the base shaft member 11 and is mounted on the lower portion of the mounting portion 110 of the base shaft member 11 in a manner that allows it to move up and down. The upper portion of the disengagement prevention member 12 is formed in a shaft shape, and a second force member 16 is wound around it. The second force member 16 abuts against the disengagement prevention member 12 at the lower end and abuts against the lower surface of the mounting portion 110 of the base shaft member 11 at the upper end. The second force member 16 is formed using a compression coil spring, for example, and applies force to the disengagement prevention member 12 downward. When the trigger cap 10 is mounted on the mounting portion 110 of the base shaft member 11, the button portion 120 of the disengagement prevention member 12 is embedded in the through hole 102 of the trigger cap 10, and the button portion 120 engages with the through hole 102 to prevent the trigger cap 10 from disengaging. Furthermore, when the trigger cap 10 mounted on the mounting portion 110 of the base shaft member 11 is removed, the button portion 120 exposed from the through hole 102 of the trigger cap 10 is pushed upward against the applied force of the second applied portion, so that the engagement between the button portion 120 and the through hole 102 is released, and the trigger cap 10 becomes detachable.

[0070] Reference Figures 2 to 4 The frame 2 is described. The frame 2 is a hollow box in a substantially rectangular parallelepiped shape, and is formed by combining a right half 20 and a left half 21. The frame 2 contains various components such as the rear portion of the shaft portion 111 of the base shaft member 11, various circuits, a portion of the switching mechanism 4, and the opening and closing mechanism 5. A substantially circular opening is provided on the front surface of the frame 2, penetrating the shaft portion 111 of the base shaft member 11. A switching lever 3 is installed through the upper surface of the frame 2. A substrate (not shown) on which various circuits are arranged is arranged on the inner side of the left half 21 of the frame 2, and the lower end of the substrate is exposed from the lower part of the frame 2, and becomes a terminal for forming a circuit with the driving part of the main body accommodated in the electric device PT. The frame 2 is formed with a plate-shaped stopper 22 extending forward from the front surface of the right half 20. The stopper 22 engages with the engaging portion 141 of the limiting member 14 to limit the movement of the trigger switch TS.

[0071] Reference Figure 4 The switching mechanism 4 is described. The switching mechanism 4 has a switching contact brush 40 that moves forward and backward in conjunction with the movement of the switching lever 3. As the switching contact brush 40 moves forward and backward, a switching circuit formed by the switching contact brush 40 and a circuit on a substrate disposed on the inner side of the left half 21 of the frame 2 is switched, and the setting is switched. The switching lever 3 that operates the switching mechanism 4 can swing left and right, and when it is located in the middle of the swing range, it engages with the lever stopper 112 of the base shaft member 11 to prevent the trigger 1 from being pressed in.

[0072] Reference Figure 4 The opening and closing mechanism 5 is described. The opening and closing mechanism 5 is mounted on the rear end of the shaft portion 111 of the base shaft member 11, and moves forward and backward as the trigger 1 moves. A third biasing member 50 using a compression coil spring is disposed at the rear of the opening and closing mechanism 5, and biases the trigger 1 forward via the opening and closing mechanism 5. The opening and closing mechanism 5 has an opening and closing contact brush 51 on the left side. The opening and closing contact brush 51 forms an opening and closing circuit with a circuit on a substrate disposed on the inner side of the left half 21 of the frame 2. The opening and closing circuit is switched by the opening and closing mechanism 5 moving forward and backward, and, for example, the driving, stopping, speed change, etc. of the power unit are controlled.

[0073] Next, the operation of the trigger switch TS configured as described above will be described. Fig.12 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.12 The horizontal cross section of the front part of the trigger switch TS is shown from the viewpoint of the upper part. In addition, the upper part is shown in the figure as the front part of the trigger switch TS. Fig.12In the state where the trigger cap is removed before the state, the restriction member 14 is urged by the first urging member 15 and is located at the first position on the left end side in the support portion 114 . Fig.12 The state where the removed trigger cap 10 covers the mounting portion 110 of the base shaft member 11 is shown. Fig.12 In the embodiment, the trigger cap 10 covers the front end of the mounting portion 110 of the base shaft member 11, but is not fixed. Fig.12 In the embodiment, the first biasing member 15 applies a force centered between the front end of the limiting member 14 and the swinging portion 142 relative to the limiting member 14 located at the first position, so that the limiting member 14 swings counterclockwise and the engagement portion 141 at the rear end is located on the right side.

[0074] Fig.13 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.13 Shows from Fig.12 From the state shown, the trigger cap 10 is pushed inwardly, and the trigger cap 10 is installed. Fig.13 In the state shown, the button portion 120 of the detachment prevention member 12 is inserted into the through hole 102 of the trigger cap 10, and the trigger cap 10 is fixed so as not to detach. Fig.13 In the state shown, the limiting member 14 is located in the first position in the support portion 114 of the base shaft member 11, and is biased by the first biasing member 15, and the engaging portion 141 at the rear end is located in a position to engage with the locking portion 22 of the frame 2. When the engaging portion 141 is located in a position to engage with the locking portion 22, the trigger 1 cannot move to the deepest position even when receiving a push-in operation, and the movement is restricted at the limiting position that does not reach the deepest position. That is, in Fig.13 In the state shown, the trigger 1 is in a restricted state where the movement is restricted at the restricted position. Therefore, in the operation of mounting the trigger cap 10 on the base shaft member 11, even if the trigger cap 10 is strongly pressed in the pressing direction (backward), the movement of the trigger 1 is restricted at the restricted position and does not reach the deepest position. Therefore, even in a state where various safety functions other than the power supply are not functioning, the driving part is not driven by the pressing of the trigger 1, and a safe state is maintained.

[0075] Fig.14 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.14 is Fig.13 In the state, from Fig.13 Cut at different horizontal sections slightly below and shown from a viewpoint above. Fig.14 In the illustrated state, the left side surface near the front end of the restricting member 14 abuts against the abutment portion 103 of the trigger cap 10 .

[0076] Fig.15 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.15 Shows from Fig.14 In addition, in the present application, after the trigger cap 10 is installed, the pressing of the trigger 1 based on the initial pressing operation is referred to as the first pressing, and the pressing of the trigger 1 based on the second and subsequent pressing operations is referred to as the second pressing. Fig.15 Shows from Fig.14 The state of receiving the first pressing operation from the state shown. When receiving the first pressing operation, the limiting member 14 is in a state where the engaging portion 141 is engaged with the stop portion 22 of the frame 2 and cannot move in the pressing direction (backward), so the abutting portion 103 of the trigger cap 10 abuts against the limiting member 14 and presses the limiting member 14 to the left. The limiting member 14 that receives the pressing to the left from the abutting portion 103 overcomes the applied force of the first force applying member 15, maintains the restricted state of the engaging portion 141 and the stop portion 22, and moves from the first position to the second position. The movement from the first position to the second position is a movement in a direction from left to right that intersects the pressing direction. Within the moving range of the limiting member 14, the first position is a position on the left end side, and the limiting member 14 is in a restricted state engaged with the stop portion 22 when it is in the first position. Within the moving range of the limiting member 14, the second position is a position on the right end side, and the limiting member 14 operates in a manner of transferring between the restricted state and the restriction release state when it is in the second position. Fig.15 The state where the limiting member 14 moves to the second position is shown. Fig.15 In the state shown, the engaging portion 141 of the limiting member 14 maintains the engagement with the locking portion 22 of the frame 2, so the movement of the trigger 1 at the limiting position is restricted relative to the first push. Therefore, when the first push is received, the movement of the trigger 1 at the limiting position is restricted and does not reach the deepest position. That is, the driving portion is not driven by the push of the trigger 1, and a safe state is maintained.

[0077] Fig.16 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.16 Shows from Fig.15 The state shown is a state after the first push on the trigger 1 is released, the trigger 1 is urged by the third urging member 50, and moves to the front release position. Fig.16In the state shown, the limiting member 14 is located at the second position, abutting against the abutment portion 103 of the trigger cap 10, and the trigger 1 is in a restricted state where movement is restricted at the restricted position. As the limiting member 14 moves from the first position to the second position, the first force applying member 15 becomes compressed. Then, Fig.16 The first push is released and the trigger 1 moves to the release position, whereby the engagement between the engaging portion 141 of the restricting member 14 and the locking portion 22 of the frame 2 is released.

[0078] Fig.17 It is a schematic cross-sectional view showing an example of the front portion of the trigger switch TS disclosed in the present application. Fig.17 The limiting member 14 is shown Fig.16 The state shown in the figure starts to operate. By releasing the engagement between the engaging portion 141 of the limiting member 14 and the locking portion 22 of the frame 2, the limiting member 14, through the force applied by the first force applying member 15, rotates rightward (clockwise) toward the figure and performs a swinging action with the portion abutting against the abutting portion 103 of the trigger cap 10 as a fulcrum. Fig.17 As shown in FIG. 1 , the engaging portion 141 of the restricting member 14 moves toward the left half 21 of the frame 2 through the swinging action, and is transferred from the restricting state to the restricting released state. Fig.17 In the state shown, when the trigger 1 is pressed in, i.e., the second time, the engaging portion 141 of the limiting member 14 is located at a position where it does not engage with the stopper 22 of the frame 2, so the trigger 1 can be pressed in to the deepest position. If the trigger 1 is pressed in twice or more, it is highly likely that the operator intentionally operated the trigger 1, rather than causing an erroneous operation.

[0079] As described above, the trigger switch TS disclosed in the present application can install / remove the trigger cap 10 and prevent erroneous operation when installing the trigger cap 10. Moreover, after installing the trigger cap 10, the trigger switch TS disclosed in the present application can limit the first push as the initial push to maintain safety while enabling the second push after the first push is released. In this way, the trigger switch TS disclosed in the present application has excellent effects such as being able to take into account both safety and operability.

[0080] The present invention is not limited to the above-described embodiments, and can be implemented in various other forms. Therefore, the embodiments are merely illustrative in all aspects and are not to be construed in a limiting sense. The technical scope of the present invention is described in the claims and is not subject to any restrictions in the body of the specification. Furthermore, all modifications and changes that fall within the equivalent scope of the claims are within the scope of the present invention.

[0081] For example, in the above-described embodiment, the limiting member 14 is shown to be capable of swinging with the swing portion 142 as the swing axis and moving between the first position and the second position, but the present invention is not limited thereto and can be expanded into various forms such as a structure without the swing portion 142.

[0082] That is, the trigger switch TS disclosed in the present application can be developed into various forms according to the following supplementary notes.

[0083] (Note 1)

[0084] A trigger switch comprises: a trigger capable of receiving a press based on an operator's operation and moving to the deepest position in the pressing direction; and a frame body for supporting the trigger in a movable manner, wherein:

[0085] The triggers include:

[0086] The trigger cap has a finger-hooking portion for the operator's finger to hook;

[0087] a base shaft member on which the trigger cap is detachably mounted; and

[0088] a limiting member operatively supported on the base shaft member and capable of limiting movement of the trigger,

[0089] The base shaft component has:

[0090] A mounting portion, used to mount the trigger cap; and

[0091] The shaft supports the mounting portion at one end and is inserted into the frame at the other end.

[0092] When the trigger cap is removed,

[0093] By the limiting member being in the limiting state, the movement of the trigger is limited at the limiting position that does not reach the deepest position.

[0094] With the trigger cap installed,

[0095] The restriction member is capable of shifting between a restricted state and a restriction released state in which restriction on movement of the trigger is released.

[0096] (Note 2)

[0097] The trigger switch according to Supplement 1, wherein:

[0098] Upon receiving the first push,

[0099] The trigger cap is mounted on the base shaft member, and the movement of the trigger is restricted by the restriction member in the restricted state.

[0100] In the case where the first push received is released,

[0101] The restricting member is shifted from a restricting state restricting movement of the trigger to a restriction releasing state,

[0102] In the case of receiving a second push after the first push is released,

[0103] Since the restriction member is in the restriction released state, the trigger can move to the deepest position.

[0104] (Note 3)

[0105] The trigger switch according to Supplement 2, wherein:

[0106] The frame body has a locking portion that engages with the limiting member.

[0107] The limiting member has an engaging portion engaged with the frame body,

[0108] The limiting member performs the following actions: it switches between a limiting state in which the engaging portion is engaged with the locking portion of the frame relative to the movement of the trigger caused by pressing, and a limiting release state in which the engaging portion is not engaged with the locking portion of the frame relative to the movement of the trigger caused by pressing.

[0109] (Note 4)

[0110] The trigger switch according to Supplement 3, wherein:

[0111] The restricting member is supported by the base shaft member so as to be movable between a first position in a restricted state and a second position, wherein the second position is transferable between the restricted state and a restriction-released state.

[0112] Upon receiving the first push,

[0113] The restricting member in the restricting state at the first position moves from the first position to the second position while maintaining the restricting state,

[0114] In the case where the first push is released,

[0115] The restricting member shifts from a restricted state to a restricted released state at the second position.

[0116] (Note 5)

[0117] A trigger switch according to Supplement 4, wherein:

[0118] comprising a force applying member for applying force to the limiting member,

[0119] The trigger cap has an abutment portion abutting against the limiting member,

[0120] Upon receiving the first push,

[0121] The trigger cap presses the limiting member by the contact portion, and the limiting member moves from the first position to the second position while being engaged with the locking portion against the biasing force of the biasing member.

[0122] In the case where the first push is released,

[0123] The restricting member is biased by the biasing member to swing about a portion abutting against the abutting portion of the trigger cap as a fulcrum, thereby releasing the engagement with the locking portion and shifting from the restricted state to the restriction released state.

[0124] (Note 6)

[0125] The trigger switch according to Supplement 5, wherein:

[0126] The restricting member has a swing portion as a swing axis,

[0127] and supported on the base shaft member in a manner capable of swinging with the swing portion as a swing axis,

[0128] The trigger cap is removed from the base shaft member, is urged by the urging member to move to the first position, and is urged by the urging member to swing about the swing portion as a swing axis at the first position, thereby entering a restricted state.

Claims

1. A trigger switch, comprising: A trigger capable of receiving a press based on an operator's operation and moving to a deepest position in a pressing direction; and a frame, which supports the trigger in a movable manner, wherein the trigger switch is characterized in that: The triggers include: The trigger cap has a finger-hooking portion for the operator's finger to hook; a base shaft member on which the trigger cap is detachably mounted; and a limiting member operatively supported on the base shaft member and capable of limiting movement of the trigger, The base shaft component has: A mounting portion, used to mount the trigger cap; and The shaft supports the mounting portion at one end and is inserted into the frame at the other end. When the trigger cap is removed, By the limiting member being in the limiting state, the movement of the trigger is limited at the limiting position that does not reach the deepest position. With the trigger cap installed, The restriction member is capable of shifting between a restricted state and a restriction released state in which restriction on movement of the trigger is released.

2. The trigger switch according to claim 1, characterized in that: Upon receiving the first push, The trigger cap is mounted on the base shaft member, and the movement of the trigger is restricted by the restriction member in the restricted state. In the case where the first push received is released, The restricting member is shifted from a restricting state restricting movement of the trigger to a restriction releasing state, In the case of receiving a second push after the first push is released, Since the restriction member is in the restriction released state, the trigger can move to the deepest position.

3. The trigger switch according to claim 2, characterized in that: The frame body has a locking portion that engages with the limiting member. The limiting member has an engaging portion engaged with the frame body, The limiting member performs the following actions: it switches between a limiting state in which the engaging portion is engaged with the locking portion of the frame relative to the movement of the trigger caused by pressing, and a limiting release state in which the engaging portion is not engaged with the locking portion of the frame relative to the movement of the trigger caused by pressing.

4. The trigger switch according to claim 3, characterized in that: The restricting member is supported by the base shaft member so as to be movable between a first position in a restricted state and a second position, wherein the second position is transferable between the restricted state and a restriction-released state. Upon receiving the first push, The restricting member in the restricting state at the first position moves from the first position to the second position while maintaining the restricting state, In the case where the first push is released, The restricting member shifts from a restricted state to a restricted released state at the second position.

5. The trigger switch according to claim 4, characterized in that: comprising a force applying member for applying force to the limiting member, The trigger cap has an abutment portion abutting against the limiting member, Upon receiving the first push, The trigger cap presses the limiting member by the contact portion, and the limiting member moves from the first position to the second position while being engaged with the locking portion against the biasing force of the biasing member. In the case where the first push is released, The restricting member is biased by the biasing member to swing about a portion abutting against the abutting portion of the trigger cap as a fulcrum, thereby releasing the engagement with the locking portion and shifting from the restricted state to the restriction released state.

6. The trigger switch according to claim 5, characterized in that: The restricting member has a swing portion as a swing axis, and supported by the base shaft member in a manner capable of swinging with the swing portion as a swing axis, The trigger cap is removed from the base shaft member, is urged by the urging member to move to the first position, and is urged by the urging member to swing about the swing portion as a swing axis at the first position, thereby entering a restricted state.

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