Trigger switch

Abstract

The invention provides a trigger switch which is high in safety and capable of preventing malfunction, theft and the like. A trigger switch includes a trigger, a shaft member, and a housing. The trigger switch comprises a fixed clamping part and a movable clamping part capable of moving, and the fixed clamping part and the movable clamping part capable of moving are clamped with each other to restrain the movement of the trigger. The trigger comprises a trigger cover; and a holding member that holds the trigger cover and is supported by the shaft member. The trigger cover includes a restricting portion that is attachable and detachable with respect to the holding member. When the trigger cover is detached, the movable engaging portion moves to the engaging position, and movement of the trigger caused by the pressing operation is suppressed. When the trigger cover is mounted, the movement of the movable engaging portion is restricted by the restricting portion, and the suppression of the movement of the trigger is released.

Description

Technical Field

[0001] The present invention relates to a trigger switch including a trigger that receives a pressing operation. Background Art

[0002] The trigger switch used to operate the electric tool includes a trigger that receives a pressing operation by an operator, and an axis member that supports the trigger. The operator hooks his finger on the trigger and pulls (presses) the trigger, so that the axis member moves along the operation direction, the trigger switch works, and the electric tool runs. This kind of electric tool needs to consider safety aspects such as preventing malfunctions. Moreover, most electric tools are high-priced products, and safety aspects need to be considered from the perspective of preventing theft. For example, Patent Document 1 discloses an electric tool that maintains a usable state by performing authentication processing by sending and receiving information with an authentication machine worn by the user, thereby improving safety from the perspective of preventing theft.

[0003] [Prior art literature]

[0004] [Patent Document]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2006-218575 Summary of the invention

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

[0007] Improving safety such as preventing malfunction and theft is an important function of electric tools, and various technologies are being developed.

[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 that improves safety such as preventing erroneous operation and preventing theft.

[0009] [Technical means to solve the problem]

[0010] In order to solve the above-mentioned problem, the present invention is a trigger switch, which includes: a trigger that moves when an operator presses the trigger; a shaft member that supports the trigger at one end; and a housing that is located at the other end of the shaft member. The trigger switch includes: a fixed engaging portion and an operable movable engaging portion that engage with each other to inhibit the movement of the trigger caused by the pressing operation. The trigger includes: a trigger cover including a finger hook portion for the operator to hook the finger; and a retaining member that holds the trigger cover and is supported by the shaft member. The trigger cover includes a limit The limiting portion limits the action of the movable engaging portion engaging with the fixed engaging portion, and can be installed and removed relative to the retaining member. When the trigger cover is removed, the movable engaging portion moves to an engaging position engaged with the fixed engaging portion, thereby inhibiting the movement of the trigger caused by a pressing operation. When the trigger cover is installed, the action of the movable engaging portion is limited to a release position where it is not engaged with the fixed engaging portion by the limiting portion, thereby releasing the inhibition of the movement of the trigger caused by a pressing operation.

[0011] Moreover, in the trigger switch, wherein the fixed engaging portion is formed on the housing, the movable engaging portion is a part of a movable member installed on the retaining member, and moves between an engaging position engaged with the fixed engaging portion and a release position not engaged with the fixed engaging portion, and when the trigger cover is installed on the retaining member, the movable engaging portion is moved from the engaging position to the release position through the limiting portion.

[0012] Moreover, in the trigger switch, the movable component includes: the movable engaging portion, which runs between an engaging position and a releasing position, and engages with the fixed engaging portion at the engaging position; and a force applying portion, which applies force to the movable engaging portion from the releasing position side to the engaging position side, and the limiting portion of the trigger cover limits the movable engaging portion in a manner to prevent it from running to the engaging position.

[0013] [Effects of the Invention]

[0014] The trigger switch disclosed in the present application inhibits the movement of the trigger when the trigger cover is removed, thereby achieving excellent effects such as improved safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic perspective view showing an example of the appearance of the electric device disclosed in the present application.

[0016] Figure 2 This is a schematic perspective view showing an example of the appearance of the trigger switch disclosed in the present application.

[0017] Figure 3This is a schematic exploded view showing an example of the trigger switch disclosed in the present application.

[0018] Figure 4 This is a schematic cross-sectional view showing an example of a trigger cover included in the trigger switch disclosed in the present application.

[0019] Figure 5 This is a schematic cross-sectional view showing an example of the trigger switch disclosed in the present application.

[0020] Figure 6 This is a schematic cross-sectional view showing an example of the trigger switch disclosed in the present application.

[0021] [Explanation of Symbols]

[0022] PT: Electric device

[0023] 1: Ontology device

[0024] 2: Trigger switch

[0025] 20: Trigger

[0026] 200: Trigger cover

[0027] 200a: Hook

[0028] 200b: Restriction

[0029] 201: Keeping components

[0030] 202: Movable components

[0031] 202a: Force application part

[0032] 202b: Movable engaging portion

[0033] 203: Separation prevention member

[0034] 21: Shell

[0035] 210: Fixed snap-fit ​​part

[0036] 22: Shaft component

[0037] 23: Switching lever DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0039] <Application Examples>

[0040] The trigger switch disclosed in the present application can be applied to various electric devices represented by electric tools such as electric drills, electric screwdrivers, electric wrenches, and electric grinders that include a driving part such as a motor.

[0041] <Electric device PT>

[0042] Figure 1 The electric device PT disclosed in the present application can be applied to electric tools such as electric drills, electric screwdrivers, electric wrenches, and electric grinders, and can also be applied to various devices including a trigger switch 2, such as a water gun, a paint spray gun, and a model gun. Figure 1 The illustrated electric device PT includes a main body device 1 , in which a trigger switch 2 that receives a pressing operation by a user is incorporated. Figure 1 The illustrated electric device PT is in 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). 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. Moreover, the description is made with the direction of the rotating tool portion such as a drill bit installed as the front, and the direction of pressing the trigger switch 2 as the rear. That is, in the trigger switch 2 assembled in the electric device PT, the direction from the front to the rear becomes the operation direction of pressing by the pressing operation. These directions are for the convenience of description, and do not limit the direction of use of the electric device PT and the trigger switch 2.

[0043] <Trigger switch 2>

[0044] Next, the trigger switch 2 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 2 disclosed in the present application. The trigger switch 2 includes components such as a trigger 20, a housing 21, a shaft member 22, and a switching lever 23.

[0045] The trigger 20 is a member that receives a pressing operation by the user, and is assembled in the electric device PT in an exposed state so as to be operable. The housing 21 houses various circuits, springs that resist the pressing of the trigger 20, and other various members, and is assembled inside the electric device PT. The shaft member 22 is a member that connects the trigger 20 and the housing 21. The shaft member 22 is a slender metal plunger that Figure 2 The shaft member 22 supports the trigger 20 at its front end (one end) and is inserted into the housing 21 at its rear end (the other end). The switching lever 23 is a member for switching settings such as the action direction and the action mode.

[0046] Figure 3 2 is a schematic exploded view showing an example of the trigger switch 2 disclosed in the present application. Figure 3 In order to easily identify the trigger 20 and its peripheral components included in the trigger switch 2 of the present application, the bellows, the switching lever 23, a part of the housing 21, and the internal structure of the housing 21 are omitted. The trigger 20 included in the trigger switch 2 includes various structures such as a trigger cover 200, a holding member 201, a movable member 202, and a separation prevention member 203.

[0047] Figure 4 1 is a schematic cross-sectional view showing an example of a trigger cover 200 included in the trigger switch 2 disclosed in the present application. Figure 4 This is a longitudinal sectional view showing a trigger cover 200 constituting a trigger 20 included in the trigger switch 2 as viewed from the left side. Figure 3 and Figure 4 The trigger cover 200 will be described. The trigger cover 200 can be installed and removed relative to the retaining member 201. The trigger cover 200 is formed in a substantially rectangular box shape that is opened at the top and rear. The trigger cover 200 includes a finger hook portion 200a on the front surface for the operator to hook the finger, and the finger hook portion 200a is curved into a concave shape to facilitate the finger hooking. A limiting portion 200b protruding toward the rear is formed on the inner wall surface in the front of the trigger cover 200. The limiting portion 200b is in a substantially rectangular plate shape in a plan view, and is formed on the inner wall surface of the trigger cover 200 in a cantilever state in such a manner that the longitudinal direction becomes the front-to-back direction. The limiting portion 200b of the trigger cover 200 limits the movement of the movable engaging portion 202b of the movable member 202 as described below.

[0048] return Figure 3 The holding member 201 is supported by the front end of the shaft member 22. The holding member 201 can be mounted and removed from the trigger cover 200, and has the function of holding the mounted trigger cover 200 when the trigger cover 200 is mounted. The holding member 201 has concavoconvex portions formed on the front surface and the side surface, and when the trigger cover 200 is mounted, the concavoconvex portions are engaged with the concavoconvex portions formed on the inner wall surface of the trigger cover 200. Therefore, the trigger cover 200 can be configured in a manner that it can be mounted only on a specific holding member 201 by appropriately designing the concavoconvex portions of the holding member 201 and the trigger cover 200.

[0049] The movable member 202 is composed of components such as a torsion spring (torsion coil spring) and a leaf spring. The movable member 202 illustrated in the present application is a torsion spring formed with two series of coils as a force-applying portion 202a, and one of the arms extending longer from the force-applying portion 202a functions as a movable engaging portion 202b. The unillustrated guide rod of the movable member 202 is inserted through the force-applying portion 202a and is mounted on the retaining member 201 in an operable manner through the guide rod. The movable engaging portion 202b of the movable member 202 extends toward the rear, and is forced in a manner that the movable engaging portion 202b is shaken from the release position to the engaging position by the force of the force-applying portion 202a.

[0050] The movable engaging portion 202b of the movable member 202 is formed in such a manner that it can be swung between an engaging position and a releasing position, using the force applying portion 202a as a swing axis. The engaging position is a position where the movable engaging portion 202b stands up from the force applying portion 202a toward the upper and rearward direction, and the releasing position is a position where the movable engaging portion 202b is lowered from the force applying portion 202a in a manner that becomes substantially horizontal. When the movable engaging portion 202b is located at the engaging position, it engages with the fixed engaging portion 210 formed on the housing 21 side, and the movement of the trigger 20 caused by pressing is suppressed by the engagement of the movable engaging portion 202b and the fixed engaging portion 210.

[0051] The detachment prevention member 203 is a substantially U-shaped clamp that fixes the trigger cover 200 mounted on the holding member 201 in a manner that prevents detachment. The detachment prevention member 203 is fitted into the side and lower part of the holding member 201, and supports the trigger cover 200 mounted on the holding member 201 from the inside.

[0052] The housing 21 is in a substantially rectangular box shape, with an opening formed on the front surface for the shaft member 22 to be inserted through, and an opening formed on the upper surface for the shaft of the switching lever 23 to be inserted through. Furthermore, the housing 21 is formed with a fixed engaging portion 210 protruding toward the front on the front surface. The fixed engaging portion 210 is in a substantially rectangular plate shape in a plan view, and is formed on the front surface of the housing 21 in a cantilever state so that the longitudinal direction becomes the front-to-back direction. The fixed engaging portion 210 of the housing 21 is engaged with the movable engaging portion 202b of the movable member 202 to suppress the movement of the trigger 20 caused by the pressing operation.

[0053] <Installation / removal of trigger cover 200>

[0054] Next, a state where the trigger cover 200 is attached and a state where the trigger cover 200 is detached will be described. Figure 5 It is a schematic cross-sectional view showing an example of the trigger switch 2 disclosed in the present application. Figure 5It is a longitudinal cross-sectional view showing the trigger switch 2 from the left side. In order to facilitate understanding of the inside, the internal structure of the switching lever 23 and the housing 21 is omitted. Figure 5 201. The trigger cover 200 is shown in FIG. Figure 5 In the case where the trigger cover 200 is installed as shown, the limiting portion 200b of the trigger cover 200 is positioned in a manner that presses the movable engaging portion 202b of the movable member 202 downward, and restricts the movement in a manner that the movable engaging portion 202b is located in a release position that is not engaged with the fixed engaging portion 210 of the housing 21. The movable engaging portion 202b of the movable member 202 is forced by the force applying portion 202a in a manner that it stands up and moves to the engaging position, but the limiting portion 200b restricts in a manner that prevents the movable engaging portion 202b from moving to the engaging position. The movable engaging portion 202b is located in a release position that is not engaged with the fixed engaging portion 210, so that it will not engage with the fixed engaging portion 210 for the pressing operation of the trigger 20. That is, the inhibition of the movement of the trigger 20 is released.

[0055] Figure 6 It is a schematic cross-sectional view showing an example of the trigger switch 2 disclosed in the present application. Figure 6 It is a longitudinal cross-sectional view showing the trigger switch 2 from the left side. In order to facilitate understanding of the inside, the internal structure of the switching lever 23 and the housing 21 is omitted. Figure 6 201. The trigger cover 200 is shown in a state where the trigger cover 200 is removed from the retaining member 201. Figure 6 In the state shown in which the trigger cover 200 is removed, the movable engaging portion 202b of the movable member 202 is not restricted in its movement by the restricting portion 200b, and is therefore located at the engaging position where it is lifted up by the force applying portion 202a. Since the movable engaging portion 202b is located at the engaging position, even if the operator presses the trigger 20, the movable engaging portion 202b abuts against and engages with the fixed engaging portion 210, and thus the movement of the trigger 20 is suppressed.

[0056] As described above, the trigger switch 2 disclosed in the present application includes a trigger cover 200 that can be attached to and detached from the holding member 201. When the trigger cover 200 is removed, the fixed engaging portion 210 and the movable engaging portion 202b are engaged with each other, thereby suppressing the movement of the trigger 20 caused by the pressing operation. When the trigger cover 200 is installed, the movement of the movable engaging portion 202b is restricted to the release position where it is not engaged with the fixed engaging portion 210, so that the suppression of the movement of the trigger 20 can be released, and the movement of the trigger 20 caused by the pressing operation can be realized.

[0057] Therefore, the trigger switch 2 disclosed in the present application can prevent the occurrence of erroneous operation such as the electric device PT being operated when the trigger 20 is pressed in an unexpected state by removing the trigger cover 200, thereby exerting an excellent effect related to improved safety. In addition, the trigger switch 2 disclosed in the present application cannot operate the electric device PT unless the fitted trigger cover 200 is installed when the trigger cover 200 is removed, thereby exerting an excellent effect related to improved safety such as preventing theft.

[0058] The present invention is not limited to the above-described embodiments, and can be implemented in various other ways. Therefore, the embodiments are only illustrative in all aspects and are not to be interpreted restrictively. The technical scope of the present invention is described by the scope of the claims and is not subject to any limitation in the specification. Furthermore, all variations and changes within the scope of the claims are within the scope of the present invention.

[0059] For example, in the above embodiment, the movable member 202 including the movable engaging portion 202b is mounted on the holding member 201 and the fixed engaging portion 210 is formed on the housing 21, but the trigger switch 2 disclosed in the present application is not limited thereto and can be deformed into various forms. For example, the trigger switch 2 disclosed in the present application can be deployed into various forms such as mounting the movable member 202 including the movable engaging portion 202b on the housing 21 and forming the fixed engaging portion 210 on the holding member 201.

[0060] That is, the trigger switch 2 disclosed in the present application can be developed into various embodiments as described below.

[0061] (Note 1)

[0062] A trigger switch includes: a trigger that moves when pressed by an operator; a shaft member that supports the trigger at one end; and a housing that is located at the other end of the shaft member.

[0063] The trigger switch includes a fixed engaging portion and an operable movable engaging portion, which engage with each other to inhibit movement of the trigger caused by a pressing operation.

[0064] The trigger comprises:

[0065] a trigger cover, including a finger hook portion for the operator's finger to hook onto; and

[0066] a holding member, holding the trigger cover, supported by the shaft member,

[0067] The trigger cover

[0068] The invention comprises a limiting part, wherein the limiting part limits the action of the movable engaging part and the fixed engaging part engaging with each other.

[0069] With respect to the holding member, it is possible to install and remove,

[0070] When the trigger cover is removed, the movable engaging portion moves to an engaging position with the fixed engaging portion, thereby suppressing movement of the trigger caused by a pressing operation.

[0071] When the trigger cover is attached, the movement of the movable engaging portion is restricted by the restricting portion to a release position where the movable engaging portion is not engaged with the fixed engaging portion, thereby releasing the inhibition of the movement of the trigger due to the pressing operation.

[0072] (Note 2)

[0073] A trigger switch as described in Note 1, wherein:

[0074] The fixed engaging portion

[0075] formed in the housing,

[0076] The movable engaging portion

[0077] is a part of a movable member mounted on the retaining member,

[0078] The device moves between an engagement position in which the device is engaged with the fixed engagement portion and a release position in which the device is not engaged with the fixed engagement portion.

[0079] The trigger cover

[0080] When mounted on the holding member, the movable engaging portion is moved from the engaging position to the releasing position by the restricting portion.

[0081] (Note 3)

[0082] A trigger switch as described in Note 2, wherein:

[0083] The movable member comprises:

[0084] The movable engaging portion moves between an engaging position and a releasing position, and abuts against the fixed engaging portion to engage at the engaging position; and

[0085] a force applying portion for applying force to the movable engaging portion from the release position side to the engaging position side,

[0086] The limiting portion of the trigger cover is limited in a manner to prevent the movable engaging portion from moving to the engaging position.

Claims

1. A trigger switch, comprising: A trigger that moves in response to a pressing operation by an operator; a shaft member supporting the trigger at one end side; and a housing located at the other end side of the shaft member, The trigger switch is characterized in that it includes: a fixed engaging portion and an operable movable engaging portion, which engage with each other to suppress movement of the trigger caused by a pressing operation, The trigger comprises: a trigger cover, including a finger hook portion for the operator's finger to hook onto; and a holding member, holding the trigger cover, supported by the shaft member, The trigger cover The invention comprises a limiting part, wherein the limiting part limits the action of the movable engaging part and the fixed engaging part engaging with each other. With respect to the holding member, it is possible to install and remove, When the trigger cover is removed, the movable engaging portion moves to an engaging position with the fixed engaging portion, thereby suppressing movement of the trigger caused by a pressing operation. When the trigger cover is attached, the movement of the movable engaging portion is restricted by the restricting portion to a release position where the movable engaging portion is not engaged with the fixed engaging portion, thereby releasing the inhibition of the movement of the trigger due to the pressing operation.

2. The trigger switch according to claim 1, characterized in that: The fixed engaging portion formed in the housing, The movable engaging portion is a part of a movable member mounted on the retaining member, The device moves between an engagement position in which the device is engaged with the fixed engagement portion and a release position in which the device is not engaged with the fixed engagement portion. The trigger cover When mounted on the holding member, the movable engaging portion is moved from the engaging position to the releasing position by the restricting portion.

3. The trigger switch according to claim 2, characterized in that: The movable member comprises: The movable engaging portion moves between an engaging position and a releasing position, and abuts against the fixed engaging portion to engage at the engaging position; and a force applying portion for applying force to the movable engaging portion from the release position side to the engaging position side, The limiting portion of the trigger cover is limited in a manner to prevent the movable engaging portion from moving to the engaging position.

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