JP2022034331A - Post-installation auxiliary switch device for air tool and air tool - Google Patents

Abstract

To provide a post-installation auxiliary switch device for an air tool which can prevent a hand other than a hand gripping a handle part from being a free hand as necessary, and to provide an air tool.SOLUTION: A post-installation auxiliary switch device 30 for an air tool includes: a first coupler part 31 detachably connected to a coupler 13 of a hose 12 which supplies compressed air from a compressor 11; a second coupler part 32 detachably connected to a connection port 28 of an air tool body 20; and a connection hose 40 provided between the first coupler part 31 and the second coupler part 32. The post-installation auxiliary switch device 30 for the air tool includes: an attachment part 60 provided so as to be detachably attached to a body part 21 of the air tool body 20; and an auxiliary switch 50 which is provided at the attachment part 60 and switches a circulation state of the compressed air in the connection hose 40. The post-installation auxiliary switch device 30 is configured so that the compressed air circulates in the connection hose 40 when the auxiliary switch 50 is pressed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a retrofit auxiliary switch device for an air tool and an air tool.

Conventionally, an air tool driven by air pressure is known (see, for example, Patent Document 1).
Patent Document 1 includes a handle held by an operator, a cylinder portion arranged in front of the handle for accommodating a prime mover, and a casing arranged on the handle and the lower end side of the cylinder portion, and is driven by air pressure or the like. Power tools are listed.

The handle of this power tool is provided with a first switch that can be operated by one hand of the operator. The casing is provided with a second switch that can be operated by the other hand of the operator and that cooperates with the first switch. When both the first switch and the second switch are operated, the prime mover operates and the drive shaft rotates. As a result, it is suppressed that the hand opposite to the hand holding the handle portion becomes a play player.

Japanese Unexamined Patent Publication No. 2013-188854

By the way, according to the above configuration, the operator must always operate both the first switch and the second switch of the power tool with both hands to perform the work. Therefore, there is a problem that the power tool cannot be operated with one hand even when the work is desired to be performed with one hand from the viewpoint of workability and the like.

An object of the present invention is to provide a retrofit auxiliary switch device for an air tool and an air tool that can prevent the hand opposite to the hand gripping the handle portion from becoming a player as needed.

The retrofit auxiliary switch device for an air tool for achieving the above object extends from the main body portion having an output unit and a drive unit for driving the output unit, the main body portion, and supplies compressed air from a trigger switch and a compressor. An air tool body having a handle portion having a connection port to which a coupler of a hose to be connected is provided, and compressed air is supplied from the compressor to the drive portion when the trigger switch is pressed. A retrofit auxiliary switch device for air tools applied to an air tool that mechanically drives the drive unit, to the first coupler unit that is detachably connected to the coupler of the hose, and to the connection port. A second coupler portion that is detachably connected to the main body portion, a connection hose provided between the first coupler portion and the second coupler portion, and a mounting portion that is detachably provided to the main body portion. An auxiliary switch provided in the mounting portion for switching the flow state of the compressed air in the connection hose is provided, and the compressed air is configured to flow in the connection hose when the auxiliary switch is pressed. Has been done.

Further, the air tool for achieving the above object is an output unit, a main body having a drive unit for driving the output unit, a hose extending from the main body and supplying compressed air from a trigger switch and a compressor. An air tool body having a handle portion having a connection port to which a coupler is connected and a retrofit auxiliary switch device for the air tool are provided, and the compressor is connected to the drive unit when the trigger switch is pressed. On the other hand, it is configured to mechanically drive the drive unit by supplying compressed air.

According to the above configuration, by applying the retrofit auxiliary switch device for an air tool to an air tool, the operator can press the auxiliary switch with the other hand while holding the handle portion with one hand. Can be done. When the auxiliary switch is pressed by the operator, compressed air can flow through the connecting hose. Then, when the trigger switch is pressed with one hand of the operator, compressed air is supplied to the drive unit and the output unit operates. That is, the output unit does not operate only when the operator presses the trigger switch with one hand, and the output unit operates when the operator presses the trigger switch and the auxiliary switch with both hands.

On the other hand, when the auxiliary switch device is not applied to the air tool, the operator presses the trigger switch while holding the handle portion with one hand. While the trigger switch is being pressed, compressed air is supplied to the drive unit and the output unit operates.

As described above, when the auxiliary switch device is not used, the operator can use the air tool with one hand by directly attaching the coupler of the hose connected to the compressor to the air tool body.

Also, by connecting the auxiliary switch device between the air tool body and the compressor, it is necessary to operate with both hands in order to operate the air tool body, so it is on the opposite side of the hand that grips the handle. It is suppressed that the hand becomes a player.

Therefore, it is possible to prevent the hand on the side opposite to the hand holding the handle portion from becoming a play player, if necessary.
In the air tool, the main body portion extends along the axis line and has a cylindrical accommodating portion for accommodating the drive portion, and the handle portion extends in a direction intersecting the axis line. The output unit is provided at the first end of the main body in the axial direction, and the accommodating portion is located at the second end of the main body opposite to the first end. It has an end, and the attachment is preferably attached to the end.

According to the same configuration, the auxiliary switch is provided at a position away from the output unit. As a result, the hand opposite to the dominant hand that operates the trigger switch is separated from the output unit. Therefore, it is possible to effectively prevent the hand operating the auxiliary switch from touching the output unit.

In the air tool, the auxiliary switch has a cylindrical shape, and the casing is provided with a pair of ports on the outer peripheral surface to which the connection hose is connected, and the casing is rotatably supported around the axis of the casing. The mounting portion has an accommodating recess for accommodating the auxiliary switch and a relief recess for allowing the end of the connecting hose connected to the auxiliary switch to escape. Is preferable.

According to the same configuration, the casing of the auxiliary switch can be rotated with respect to the support portion. As a result, the connecting hose connected to the casing can be displaced from the support portion as a starting point. Therefore, the workability of handling the connecting hose can be improved.

According to the same configuration, when the casing of the auxiliary switch is rotated with respect to the support portion, that is, the mounting portion, it is possible to prevent the mounting portion from interfering with the end portion of the connecting hose. Therefore, the workability of handling the connecting hose can be further improved.

In the air tool, it is preferable that the mounting portion has a protruding portion protruding from the main body portion in the axial direction, and the accommodating recess and the relief recess are provided in the protruding portion.

According to the same configuration, by providing a housing recess and a relief recess in the protrusion protruding from the main body in the axial direction, it is possible to prevent the air tool from becoming larger in the radial direction centered on the axis of the housing. Can be done.

In the air tool, it is preferable that the auxiliary switch has an operation portion that protrudes outward from the outer peripheral surface of the mounting portion.
According to the same configuration, the operator holds the handle portion with one hand and holds the accommodating portion with the other hand so that the other hand intersects the axial direction of the accommodating portion with the other hand. The operation part of the auxiliary switch can be easily pressed with. Therefore, it is possible to prevent the operability of the air tool from being impaired by adding the auxiliary switch.

It is possible to prevent the hand on the opposite side of the hand holding the handle from becoming a play player, if necessary.

A side view showing an air tool to which an auxiliary switch device of one embodiment is applied. A circuit diagram showing an air circuit through which compressed air in an air tool flows. A side view showing an auxiliary switch device. Sectional drawing which shows the structure in the auxiliary switch in the state which is not pressed. The cross-sectional view which shows the structure in the auxiliary switch in the state of being pressed. The perspective view which shows the state in which the auxiliary switch is being attached to the attachment part. The perspective view which shows the state which the auxiliary switch is attached to the attachment part. A perspective view showing the mounting portion from diagonally above. Side view showing the mounting part from the right. A perspective view showing the mounting portion from diagonally below. The side view which shows the process of attaching the attachment part to the air tool body. The figure which shows the state which the coupler of the air hose connected to a compressor is connected to the connection port of an air tool body. A perspective view showing a state in which an operator is operating an air tool to which an auxiliary switch device is applied.

Hereinafter, the air tool 10 of one embodiment will be described with reference to FIGS. 1 to 13.
As shown in FIG. 1, the air tool 10 of the present embodiment includes an air tool main body 20 that operates by using air supplied from a compressor 11 (hereinafter, compressed air) as a power source.

The air tool 10 is configured by retrofitting an air tool retrofit auxiliary switch device 30 (hereinafter, auxiliary switch device 30) between the air tool main body 20 and the compressor 11.
A hose 12 through which compressed air flows is connected to the supply port of the compressor 11. A coupler 13 is attached to the end of the hose 12 on the outlet side. The coupler 13 is a socket, a so-called female coupler, that constitutes a one-touch fluid coupling.

(Air tool body 20)
As shown in FIGS. 11 and 12, the air tool main body 20 has a main body portion 21 having an output unit 22 and a drive unit 23 for driving the output unit 22, extending from the main body unit 21, and a coupler of a trigger switch 27 and a hose 12. A handle portion 26 having a connection port 28 to which the 13 is connected is provided. The air tool main body 20 is a commercially available ready-made product.

The main body portion 21 has a cylindrical accommodating portion 25 extending along the axis X1 and accommodating the driving portion 23. An output unit 22 is provided at the first end 21A (right end in the figure) of the main body 21 in the axis X1 direction.

The accommodating portion 25 is located at the second end 21B on the opposite side of the axis X1 direction from the first end 21A of the main body portion 21, and has an end portion 25A forming the bottom portion of the accommodating portion 25.
Hereinafter, the first end 21A side and the second end 21B side in the axis X1 direction may be referred to as a front side and a rear side, respectively. Further, the left and right sides when the tip of the handle portion 26 is directed downward and the air tool body 20 is viewed from the rear to the front may be simply referred to as left and right.

The drive unit 23 is an air motor that is mechanically driven by supplying compressed air from the compressor 11. The output unit 22 is connected to the output shaft of the drive unit 23.
The output unit 22 is composed of, for example, a drill chuck and a drill bit (not shown) held by the drill chuck. The handle portion 26 extends in a direction intersecting the axis X1.

As shown in FIG. 12, the axis Y1 of the handle portion 26 is inclined with respect to the axis X1 so as to be away from the first end 21A in the direction of the axis X1 toward the tip end side of the handle portion 26.
At the tip of the handle portion 26, a connection port 28 to which the coupler 13 of the hose 12 is connected and an discharge port 29 for discharging compressed air from the drive portion 23 to the outside are provided. Inside the handle portion 26, a supply flow path 28A that connects the connection port 28 and the drive unit 23 and supplies compressed air from the compressor 11 to the drive unit 23, and a drive unit 23 and an discharge port 29. Is provided and a discharge flow path 29A for discharging compressed air from the drive unit 23 is provided.

The connection port 28 is a so-called male coupler, which is a plug paired with the coupler 13 to form a one-touch fluid coupling. The discharge port 29 is provided on the front side of the connection port 28. The trigger switch 27 is arranged on the front surface of the base end portion of the handle portion 26.

As shown in FIG. 2, the trigger switch 27 is always a normally closed switch that cuts off communication between the connection port 28 and the drive unit 23 in the supply flow path 28A.
The trigger switch 27 maintains the supply flow path 28A in a communicating state when the pressing operation is performed.

(Auxiliary switch device 30)
As shown in FIGS. 1 and 3, the auxiliary switch device 30 includes a connection hose 40 provided between the first coupler unit 31, the second coupler unit 32, and the first coupler unit 31 and the second coupler unit 32. , A mounting portion 60, and an auxiliary switch 50. In this embodiment, the right-handed auxiliary switch device 30 will be exemplified.

The first coupler portion 31 is detachably connected to the coupler 13. The first coupler portion 31 is a so-called male coupler, which is a plug that forms a pair with the coupler 13 to form a one-touch fluid coupling.

The second coupler portion 32 is detachably connected to the connection port 28. The second coupler portion 32 is a so-called female coupler, which is a socket paired with the connection port 28 to form a one-touch fluid coupling.
The connection hose 40 includes a first connection hose 41 having an end connected to the first coupler portion 31 and a second connection hose 42 having an end connected to the second coupler portion 32.

(Auxiliary switch 50)
As shown in FIG. 2, the auxiliary switch 50 switches the flow state of the compressed air in the connecting hose 40.

As shown in FIGS. 2, 4 and 5, the auxiliary switch 50 is provided between the end of the first connection hose 41 and the end of the second connection hose 42.
The auxiliary switch 50 is a spool valve and includes a cylindrical casing 51, a valve body 56 provided inside the casing 51, and an operation unit 58 connected to the valve body 56.

On the outer peripheral surface of the casing 51, a first port 53 and a second port 54 connected to an end portion of the first connection hose 41 and an end portion of the second connection hose 42 are provided so as to project. The first port 53 and the second port 54 are provided side by side in the axis Z2 direction of the casing 51.

The valve body 56 is located in the axis Z2 direction between a blocking position (see FIG. 4) that blocks communication of the compressed air flow path 55 in the casing 51 and a communication position (see FIG. 5) that communicates with the flow path 55. It is movable.

Inside the casing 51, an urging member 62 for urging the valve body 56 toward the outside of the casing 51 is provided.
As shown in FIG. 4, the valve body 56 is always positioned at the cutoff position by being urged by the urging member 62.

As shown in FIG. 5, when the valve body 56 moves to the communication position by pressing the operation unit 58 against the urging force of the urging member 62, the first port 53 and the second port 54 are communicated with each other. Ru.
As shown in FIGS. 4 to 7, a pair of annular support portions 52A and 52B that rotatably support the casing 51 around the axis Z2 are provided at both ends of the casing 51. The outer shape of the support portions 52A and 52B of the present embodiment is a regular hexagon.

(Mounting part 60)
As shown in FIGS. 8 to 11, the mounting portion 60 is removable from the main body portion 21 of the air tool main body 20. The mounting portion 60 of this embodiment is integrally molded with a synthetic resin material.

The mounting portion 60 has a covering portion 61 that covers the outer peripheral surface and the end portion 25A of the rear portion of the accommodating portion 25, and a protruding portion 64 that protrudes rearward from the main body portion 21 in the axis X1 direction.
The covering portion 61 has a substantially half-cylindrical shape. The covering portion 61 is open on the first end 21A side, that is, the front side in the axis X1 direction. The covering portion 61 has a partition wall 63 covering the end portion 25A on the second end 21B side, that is, on the rear side in the axis X1 direction. The inner surface of the covering portion 61 has a shape along the outer surface of the accommodating portion 25.

As shown in FIGS. 6 to 8, the protrusion 64 is provided with a housing recess 64A for accommodating the auxiliary switch 50 and a relief recess 64B for allowing the end of the connection hose 40 connected to the auxiliary switch 50 to escape. There is.

The protrusion 64 has a bottom wall 65 and a pair of side walls 66, 67 that stand up from the left and right sides of the bottom wall 65. An insertion port 68 into which the support portion 52B of the auxiliary switch 50 is rotatably inserted is opened on the inner surface of the left side wall 66.

At a position of the right side wall 67 facing the insertion port 68, an insertion recess 69 into which the support portion 52A of the auxiliary switch 50 is inserted so as not to rotate is provided. The insertion recess 69 is open toward the upper side. The insertion recess 69 penetrates the side wall 67 to the left and right.

The accommodating recess 64A is composed of a portion surrounded by the left and right side walls 66, 67 and the partition 63, an insertion port 68, and an insertion recess 69, and is open upward.
The relief recess 64B is a portion adjacent to the rear of the accommodating recess 64A, and is composed of a portion surrounded by the bottom wall 65 and the left and right side walls 66 and 67, and is open upward and rearward.

As shown in FIG. 6, when the auxiliary switch 50 is attached to the attachment portion 60, the support portion 52B of the auxiliary switch 50 is inserted into the insertion port 68 with the connection hose 40 extending upward with respect to the auxiliary switch 50. .. Subsequently, the support portion 52A of the auxiliary switch 50 is inserted into the insertion recess 69 from above.

In this state, the operation portion 58 of the auxiliary switch 50 projects outward, that is, to the right from the outer peripheral surface of the mounting portion 60.
Subsequently, as shown in FIG. 7, the casing 51 is rotated with respect to the support portions 52A and 52B to release the connecting hose 40 and arrange it in the recess 64B.

As shown by the alternate long and short dash line in FIG. 1, the insulating property for bundling the first connecting hose 41 and the second connecting hose 42 is within a predetermined range on the auxiliary switch device 30 side of the connecting hose 40. The tape 43 is wrapped around it.

Next, how to use the air tool will be described.
(When working with an air tool with one hand)
As shown in FIG. 12, the coupler 13 of the hose 12 connected to the compressor 11 is attached to the connection port 28 of the air tool main body 20. For example, the operator W grips the handle portion 26 with the right hand H1 and presses the trigger switch 27 with the index finger F1 of the right hand. As a result, the supply flow path 28A is in a communicating state, so that compressed air is supplied to the drive unit 23 and the output unit 22 rotates.

(When working with an air tool with both hands)
As shown in FIG. 1, the second coupler portion 32 is attached to the connection port 28 of the air tool main body 20. Further, the mounting portion 60 in which the auxiliary switch 50 is mounted is mounted on the accommodating portion 25 from the rear of the air tool main body 20.

Further, the first coupler portion 31 is attached to the coupler 13 of the hose 12 connected to the compressor 11. In this state, since the auxiliary switch 50 closes the connection hose 40, compressed air is not supplied to the air tool 10 even if the operator W presses only the trigger switch 27, so that the air tool 10 does not operate.

As shown in FIG. 13, the worker W grips the handle portion 26 with the right hand H1 and attaches the left hand H2 onto the mounting portion 60. Then, the worker W presses the trigger switch 27 with the index finger F1 of the right hand while pressing the operation unit 58 of the auxiliary switch 50 with the index finger F2 of the left hand. As a result, the connecting hose 40 and the supply flow path 28A communicate with each other, so that compressed air is supplied to the drive unit 23 and the output unit 22 rotates.

The operation and effect of the auxiliary switch device 30 and the air tool 10 of the present embodiment will be described.
(1) By applying the auxiliary switch device 30 to the air tool 10, the operator W performs a pressing operation of the auxiliary switch 50 with the other hand H2 while holding the handle portion 26 with the other hand H1. be able to. When the auxiliary switch 50 is pressed by the operator W, compressed air can flow through the connecting hose 40. Then, when the trigger switch 27 is pressed by one hand H1 of the operator W, compressed air is supplied to the drive unit 23 and the output unit operates. That is, the output unit 22 does not operate if the worker W simply presses the trigger switch 27 with one hand, and the worker W presses the trigger switch 27 and the auxiliary switch 50 with both hands, so that the output unit 22 does not operate. 22 works.

On the other hand, when the auxiliary switch device 30 is not applied to the air tool 10, the operator W performs a pressing operation of the trigger switch 27 while holding the handle portion 26 with one hand H1. While the trigger switch 27 is being pressed, compressed air is supplied to the drive unit 23 and the output unit 22 operates.

As described above, when the auxiliary switch device 30 is not used, the operator W can directly attach the coupler 13 of the hose 12 connected to the compressor 11 to the air tool main body 20 with one hand. 20 can be used. Further, by connecting the auxiliary switch device 30 between the air tool main body 20 and the compressor 11, it is necessary to operate the air tool main body 20 with both hands in order to operate the air tool main body 20, so that the hand holding the handle portion 26 is held. It is suppressed that the hand H2 on the opposite side of H1 becomes a play player.

Therefore, it is possible to prevent the hand H2 on the side opposite to the hand H1 that grips the handle portion 26 from becoming a play player, if necessary.
(2) The main body portion 21 has a cylindrical accommodating portion 25 extending along the axis X1 and accommodating the drive portion 23, and the handle portion 26 extends in a direction intersecting the axis X1. ing. An output unit 22 is provided at the first end 21A of the main body 21 in the axis X1 direction, and the accommodating portion 25 is an end located at the second end 21B opposite to the first end 21A of the main body 21. It has a portion 25A, and the mounting portion 60 is attached to the end portion 25A.

According to the same configuration, the auxiliary switch 50 is provided at a position away from the output unit 22. As a result, the hand opposite to the dominant hand that operates the trigger switch 27 is separated from the output unit 22. Therefore, it is possible to effectively prevent the hand operating the auxiliary switch 50 from touching the output unit 22.

(3) The auxiliary switch 50 has a cylindrical shape, and rotates the casing 51 around the casing 51 provided on the outer peripheral surface with a pair of ports 53, 54 to which the connecting hose 40 is connected, and the axis X1 of the casing 51. It has support portions 52A and 52B that can support it. The mounting portion 60 has a housing recess 64A for accommodating the auxiliary switch 50, and a relief recess 64B for allowing the end of the connection hose 40 connected to the auxiliary switch 50 to escape.

According to the same configuration, the casing 51 of the auxiliary switch 50 can be rotated with respect to the support portions 52A and 52B. As a result, the connecting hose 40 connected to the casing 51 can be displaced starting from the support portions 52A and 52B. Therefore, the workability of handling the connecting hose 40 can be improved.

Further, when the casing 51 of the auxiliary switch 50 is rotated with respect to the support portions 52A and 52B, that is, the mounting portion 60, it is possible to prevent the mounting portion 60 from becoming an obstacle to the end portion of the connecting hose 40. Therefore, the workability of handling the connecting hose 40 can be further improved.

(4) The mounting portion 60 has a protruding portion 64 that protrudes from the main body portion 21 in the direction of the axis X1, and the accommodating recess 64A and the relief recess 64B are provided in the protruding portion 64.
According to the same configuration, the air tool 10 is large in the radial direction centered on the axis X1 of the accommodating portion 25 by providing the accommodating recess 64A and the relief recess 64B in the projecting portion 64 protruding from the main body portion 21 in the axis X1 direction. It can be suppressed from becoming.

(5) The auxiliary switch 50 has an operating portion 58 that protrudes outward from the outer peripheral surface of the mounting portion 60.
According to the same configuration, the operator grips the handle portion 26 with one hand H1 and holds the accommodating portion 25 with the other hand H2 so that the other hand H2 intersects the axis X1 direction of the accommodating portion 25. In this state, the operation unit 58 of the auxiliary switch 50 can be easily pressed by the other hand H2. Therefore, it is possible to prevent the operability of the air tool 10 from being impaired by adding the auxiliary switch 50.

<Change example>
The above embodiment may be modified and implemented as follows, for example. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The operation portion 58 of the auxiliary switch 50 is configured to protrude outward from the outer peripheral surface of the mounting portion 60, but the present invention is not limited to this. For example, the entire auxiliary switch 50 may be arranged on the inner peripheral side of the outer peripheral surface of the mounting portion 60.

-The relief recess 64B that allows the end of the connection hose 40 to escape may be omitted. For example, by not providing the relief recess 64B, the range in which the auxiliary switch 50 can rotate may be made smaller than that of the above embodiment.

-The accommodating recess 64A is configured to be provided in the protruding portion 64, but the present invention is not limited to this. For example, the protruding portion 64 may be omitted, and a portion for holding the auxiliary switch 50 may be provided on the outer surface of the covering portion 61.

The mounting portion 60 is configured to be mounted on the end portion 25A of the accommodating portion 25 in the axis X1 direction, but the present invention is not limited to this. The mounting portion 60 may be mounted in the middle portion of the accommodating portion 25 in the axis X1 direction.

-The air tool 10 is an air drill that rotates a drill bit, but the present invention is not limited to this. For example, the present invention may be applied to an impact driver that gives a striking force in addition to a rotational force, or another air tool powered by compressed air such as an electric wrench.

The auxiliary switch 50 is configured to be assembled to the mounting portion 60, but the present invention is not limited to this. For example, the auxiliary switch 50 may be integrally provided in the mounting portion 60 by insert molding in which the auxiliary switch 50 is arranged in the mold and the resin is injected into the mold.

10 ... Air tool 11 ... Compressor 12 ... Hose 13 ... Coupler 20 ... Air tool body 21 ... Main body 21A ... First end 21B ... Second end 22 ... Output part 23 ... Drive part 25 ... Accommodating part 26 ... Handle part 27 ... Trigger switch 28 ... Connection port 28A ... Supply flow path 29A ... Discharge flow path 30 ... Retrofit auxiliary switch device for air tools 31 ... First coupler part 32 ... Second coupler part 40 ... Connection hose 50 ... Auxiliary switch 51 ... Casing 52A , 52B ... Support part 58 ... Operation part 60 ... Mounting part 62 ... Elastic member 64 ... Protruding part 64A ... Accommodating recess 64B ... Relief recess X1 ... Axis line Y1 ... Axis line

Claims (6)

An air having an output unit, a main body having a drive for driving the output, and a handle having a connection port extending from the main body and to which a trigger switch and a coupler of a hose for supplying compressed air from a compressor are connected. Air applied to an air tool that includes a tool body and mechanically drives the drive unit by supplying compressed air from the compressor to the drive unit when the trigger switch is pressed. It is a retrofit auxiliary switch device for tools.
A first coupler portion that is detachably connected to the coupler of the hose,
A second coupler unit that is detachably connected to the connection port,
A connection hose provided between the first coupler portion and the second coupler portion,
A mounting portion that is detachably provided to the main body and
An auxiliary switch provided in the mounting portion for switching the flow state of compressed air in the connecting hose is provided.
Compressed air is configured to flow through the connecting hose when the auxiliary switch is pressed.
Retrofit auxiliary switch device for air tools. An air having an output unit, a main body having a drive for driving the output, and a handle having a connection port extending from the main body and to which a trigger switch and a coupler of a hose for supplying compressed air from a compressor are connected. With the tool body,
The retrofit auxiliary switch device for an air tool according to claim 1 is provided.
It is configured to mechanically drive the drive unit by supplying compressed air from the compressor to the drive unit when the trigger switch is pressed.
Air tool. The main body portion extends along an axis and has a cylindrical accommodating portion for accommodating the drive portion.
The handle portion extends in a direction intersecting the axis line.
The output unit is provided at the first end of the main body in the axial direction.
The accommodating portion has an end portion located at a second end opposite to the first end of the main body portion.
The mounting portion is mounted on the end portion.
The air tool according to claim 2. The auxiliary switch has a casing provided on the outer peripheral surface with a pair of ports to which the connection hose is connected, and a support portion that rotatably supports the casing around the axis of the casing. ,
The mounting portion has a housing recess for accommodating the auxiliary switch and a relief recess for allowing the end of the connection hose connected to the auxiliary switch to escape.
The air tool according to claim 3. The mounting portion has a protruding portion that protrudes from the main body portion in the axial direction.
The accommodating recess and the relief recess are provided in the protruding portion.
The air tool according to claim 4. The auxiliary switch has an operating portion that protrudes outward from the outer peripheral surface of the mounting portion.
The air tool according to any one of claims 2 to 5.

Images