CN107457747B - Steering switching and transposition using device of pneumatic tool - Google Patents
Steering switching and transposition using device of pneumatic tool Download PDFInfo
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- CN107457747B CN107457747B CN201610395777.1A CN201610395777A CN107457747B CN 107457747 B CN107457747 B CN 107457747B CN 201610395777 A CN201610395777 A CN 201610395777A CN 107457747 B CN107457747 B CN 107457747B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
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Abstract
The invention relates to a steering switching and transposition using device of a pneumatic tool, which is provided with a switching group, a speed regulating group and a trigger set, wherein the switching group is provided with a forward and reverse valve and a switching valve rod, the forward and reverse valve is convexly provided with a clamping base, the switching valve rod is detachably combined with the forward and reverse valve and is provided with a clamping claw and a toggle handle, the speed regulating group is combined with the switching group and is provided with a speed regulating button, the speed regulating button is provided with a sleeve pipe and a rotating disc, the trigger set is combined with the switching group and the speed regulating group and is provided with a trigger connecting rod, a trigger and an elastic element, and the elastic element is sleeved on the trigger connecting rod and is abutted against the rotating disc and the trigger, so that the switching direction of the pneumatic tool and the pulling direction of the using device can be conveniently and safely adjusted according to the manual transposition of a user.
Description
Technical Field
The invention relates to a turning switching and transposition using device of a pneumatic tool, in particular to a pulling direction of the turning switching and transposition using device of the pneumatic tool, which can be conveniently and safely adjusted according to the use of hands of a user.
Background
The present invention relates to a device for changing position, steering, switching and using a forward/reverse valve of a conventional pneumatic tool, as shown in taiwan patent No. I266679, wherein a forward/reverse valve, a switching valve rod, a speed adjusting button, a trigger connecting rod, a trigger and an elastic element are disposed at a handle of the pneumatic tool, the forward/reverse valve is rotatably disposed on an air inlet channel of the pneumatic tool, the forward/reverse valve is provided with a through hole slot at a center thereof and an air through hole at an inner end thereof, an outer end of the forward/reverse valve extends out of the handle and is provided with a valve rod positioning portion, the switching valve rod comprises an assembling portion and a toggle control portion, the assembling portion is combined with an outer end of the forward/reverse valve, the assembling portion is provided with a combined positioning portion combined and positioned with the valve rod positioning portion, the toggle control portion extends toward one side of the handle, the trigger connecting rod passes through the through hole slot of the forward/reverse valve, and an inner end thereof is provided with a limit stop portion capable of stopping the inner end of the forward/reverse valve, the trigger connecting rod can not continuously slide outwards, a trigger assembly end extends outwards from the outer end of the trigger connecting rod, the trigger is combined with the trigger assembly end of the trigger connecting rod, the speed regulating button can rotate and axially slide to be combined with the through hole groove of the forward and reverse rotating valve, and the elastic element is arranged between the speed regulating button and the trigger.
When the right hand is the user who uses the dominant hand to hold the grip, the thumb of the right hand can be used to toggle the toggle control part of the switching valve rod, i.e. the pneumatic tool can be operated in forward rotation (clockwise rotation) or reverse rotation (anticlockwise rotation) through the forward/reverse valve, when the left hand is the user who uses the dominant hand to use the existing pneumatic tool, the speed regulating disc valve is firstly moved towards the trigger direction to compress the elastic element, a space which can move relatively is arranged between the switching valve rod and the forward/reverse valve, the combined positioning part of the switching valve rod is separated from the valve rod positioning step of the forward/reverse valve, the switching valve rod can rotate relative to the forward/reverse valve, the toggle control part of the switching valve rod moves from one side of the grip to the other side along with the rotation of the switching valve rod, the left hand is the user who uses the dominant hand, and the toggle control part can be conveniently toggled through the thumb of the left hand, while a forward/reverse operation is performed for the pneumatic tool.
However, when the conventional pneumatic tool is used, although the left hand and the right hand can be adjusted to be users of the dominant hand through the positive/negative rotation valve transposition, and the user can toggle the switching valve rod to perform the positive/negative rotation control when holding the grip with one hand, the positive/negative rotation valve transposition, switching and use device of the conventional pneumatic tool only allows the combined positioning part and the valve rod positioning part between the switching valve rod and the positive/negative rotation valve to be clamped and positioned in a way that the elastic element pushes the switching valve rod through the speed regulating button, and the clamping and positioning force is obviously insufficient, so that when the user only wants to switch the positive/negative direction of the pneumatic tool, the situation that the switching valve rod is separated from the positive/negative rotation valve due to the fact that the pushing force of the thumb is greater than the elastic force of the elastic element is likely to occur, and the switching valve rod is further rotated to the other side of the grip, not only causes inconvenience in use and changes in steering to affect safety, but also is easy to cause loss of each component after long-time use due to poor positioning effect; furthermore, when the switching valve rod is damaged after being used for a long time and needs to be replaced, the assembling part of the switching valve rod is of a closed annular structure, so that the switching valve rod can be taken down from the forward/reverse valve for replacement after the trigger, the elastic element and the speed regulating button are firstly disassembled when the switching valve rod is replaced, and the time and the cost required by maintenance and replacement are relatively increased.
Disclosure of Invention
Therefore, the inventor of the present invention has developed an invention capable of improving the existing defects through continuous research and experiments in view of the defects and shortcomings of the existing hanger structure and use of the hand tool.
The invention aims to provide a steering switching and transposition using device of a pneumatic tool, which can be conveniently and safely adjusted and used.
In view of the above, the technical means of the present invention is to provide a steering switching and transposition using device for a pneumatic tool, which includes a switching set, a speed adjusting set and a trigger set, wherein:
the switching valve group is provided with a forward and reverse valve and a switching valve rod, the forward and reverse valve is a hollow cylinder, the outer surface of the forward and reverse valve adjacent to the rear end is provided with a valve hole in a penetrating way, the outer side surface of the forward and reverse valve at the front end is axially provided with a clamping base in a protruding way, the switching valve rod can be detachably combined with the forward and reverse valve and is provided with a clamping claw and a shifting handle, the clamping claw is clamped and combined with the clamping base and is provided with a notch, the clamping claw is concavely provided with a clamping groove communicated with the notch on the outer side surface far away from the forward and reverse valve, the clamping groove and the notch form an annular structure, and the shifting handle is convexly formed on the outer surface of the clamping claw far away from the notch;
the speed regulating group is combined with the switching group and is provided with a speed regulating button which can rotate and axially slide, the speed regulating button is provided with a sleeved pipe and a rotating disc, the sleeved pipe extends into the forward and reverse rotating valve through the clamping seat, the outer end of the sleeved pipe extends to the front side of the clamping claw through the clamping seat, the rotating disc is combined with the outer surface of the outer end of the sleeved pipe and is positioned at the front side of the clamping claw, and a clamping annular edge which surrounds the outer periphery of the sleeved pipe and is combined with the clamping groove and the notch of the clamping claw is axially and convexly arranged on the inner side surface of the rotating disc facing the clamping claw, so that the rotating disc is attached to the clamping seat and the clamping claw; and
the trigger set is combined with the switching set and the speed regulating set and is provided with a trigger connecting rod, a trigger and an elastic element, the front end of the trigger connecting rod extends to the front side of the rotating disc through the forward and reverse rotation valve and the sleeve pipe, the trigger is combined with the front end of the trigger connecting rod and is positioned at the front side of the speed regulating button, a space is formed between the trigger and the rotating disc of the speed regulating button, the elastic element is sleeved on the outer end of the trigger connecting rod extending out of the speed regulating button and abuts against the rotating disc and the trigger, so that the rotating disc abuts against the clamping claw through the pushing of the elastic element, and the clamping ring edge of the rotating disc is positioned between the clamping groove and the notch of the clamping claw and keeps the space.
Furthermore, the clamping base is a polygonal hollow base body, a plurality of clamping concave surfaces are concavely arranged on the outer surface of the clamping base, and the clamping claws form two clamping surfaces which are respectively clamped and combined with the two clamping concave surfaces of the clamping base on the inner surface facing the forward and reverse rotation valve.
The positive and negative rotation valve has one speed regulating and positioning structure near the clamping seat, and the speed regulating and positioning structure has one holding lug and one positioning bead, the holding lug is set on the outer surface of the positive and negative rotation valve and communicated with the inside of the positive and negative rotation valve, the positioning bead is set inside the holding lug and extends beyond the inner surface of the positive and negative rotation valve, and the casing pipe has at least two axially set bead slots in the outer surface extending into the positive and negative rotation valve for the positioning bead to be set inside one of the slots and to be clamped with the casing pipe, and the axially set bead slots can further make the casing pipe slide forwards and backwards relatively to the positive and negative rotation valve.
Preferably, the latch claw of the switching valve rod is further provided with a protruding abutting edge at each of two free end edges, so that the two abutting edges abut against one of the latch concave surfaces of the latch base at the same time, thereby providing further structural strength for latching, and enabling the switching valve rod to be firmly and firmly engaged with the forward/reverse valve.
Preferably, the outer side surface of the rotating disc far from the clamping ring edge is provided with a plurality of number marks corresponding to the rotating speed, and the outer surface of the rotating disc is convexly provided with a plurality of convex ribs at intervals, so that a user can easily rotate the rotating disc.
Preferably, the outer side surface of the rotating disc far away from the clamping ring edge is concavely provided with an accommodating groove surrounding the outer end of the sleeving pipe, and the elastic element is sleeved on the outer end of the trigger connecting rod extending out of the speed regulating button and is positioned in the accommodating groove.
Preferably, the trigger is coupled through a fixing pin coupled to a front end of the trigger link.
By the technical means, the steering switching and transposition using device of the pneumatic tool has at least the following effects and advantages:
firstly, steering switching: when a user wants to rotate the pneumatic tool in forward or reverse direction, the user can conveniently change the rotation direction (forward or reverse) of the pneumatic tool only by pulling the toggle handle with the thumb, the use is quite convenient and easy, and in the pulling switching process, the elastic element between the trigger and the speed regulating button provides a force for pushing the speed regulating button to abut against the clamping pawl, and the clamping ring edge of the rotating disc is clamped and combined with the notch and the clamping groove of the clamping pawl, so that even if the pulling force of the thumb of the user is larger than the elastic force of the elastic element, the situation that the switching valve rod is separated from the rotating button in the rotating direction can be effectively avoided by clamping and combining the clamping ring edge of the rotating disc with the notch and the clamping groove of the clamping pawl, the switching valve rod can not move to the other side of the handle, so that the steering can be switched conveniently and safely, and the condition that loss is generated to each component after long-time use can be effectively avoided due to accurate positioning.
Secondly, transposition use: when the position changing is to be carried out, the rotating speed button firstly moves towards the trigger along the axial direction of the trigger connecting rod and compresses the elastic element, so that the clamping ring edge of the rotating disc is separated from the clamping groove of the clamping claw, wherein the clamping claw is provided with a gap, so that the clamping claw can be directly drawn out of the clamping seat and separated from the forward and reverse rotating valve, the clamping claw is clamped with the clamping concave surface of the clamping seat and positioned on the other side of the handle, after the rotating speed button is released, the clamping ring edge of the rotating disc can be clamped and combined with the clamping groove of the clamping claw through the compressed elastic element, and therefore a user who is not familiar with hands can pull the toggle handle of the switching valve rod through a thumb to control the rotating direction of the pneumatic tool, and the position changing use is quite convenient and rapid.
Thirdly, adjusting the rotating speed: when the user adjusts the rotating speed of the pneumatic tool by rotating the rotating disc, the positioning beads of the speed-adjusting positioning structure are clamped with the bead grooves of the sleeve pipe, so that the effect of a certain amount of rotation can be provided for the user, and the situation of excessively rotating the speed-adjusting button can be avoided.
Fourthly, maintenance and replacement: when the switching valve rod is damaged after being used for a long time and needs to be replaced, the clamping pawl of the switching valve rod is of a U-shaped structure with a notch, so that the switching valve rod can be conveniently taken down from the clamping seat of the forward and reverse rotating valve for replacement without disassembling the trigger, the elastic element and the speed regulating button when the switching valve rod is replaced, and the time and the cost required by maintenance and replacement are relatively reduced.
Drawings
Fig. 1 is an external perspective view of a steering switching and transposition using device of the present invention disposed on a pneumatic tool.
FIG. 2 is an enlarged partial cross-sectional side view of the steering switch and index user device of the present invention disposed on a pneumatic tool.
Fig. 3 is a perspective view of the steering switching and position changing device of the present invention separated from the pneumatic tool.
FIG. 4 is a cross-sectional side view of the device for using the steering switch and the transposition of the present invention.
Fig. 5 is an exploded perspective view of the device for using steering switch and transposition of the present invention.
Fig. 6 is another exploded perspective view of the device for steering switching and transposition use of the present invention.
Fig. 7 is an enlarged partial cross-sectional side view of the steering switch and index user apparatus of the present invention.
Fig. 8 is another enlarged partial cross-sectional side view of the steering switch and index user apparatus of the present invention.
Fig. 9 is a schematic view of the operation of the steering switching and position changing device for forward and reverse directions.
Fig. 10 is a schematic view of the operation of the steering switching and position changing device for position changing.
FIG. 11 is a perspective view of another preferred embodiment of the device for direction switching and position changing according to the present invention.
Wherein, the reference numbers:
10 positive and negative rotation valve 11 valve hole
12 clamping seat 121 clamping concave surface
13 speed-regulating positioning structure 131 accommodating convex part
132 positioning bead 14 positioning pin slot
20. 20 'switching valve rod 21, 21' clamping jaw
210 notch 211 clamping surface
212 clamping groove 213' clamping edge
22 toggle handle 30 speed regulating button
31 sleeve 311 bead groove
32 rotating disc 321 clamping ring edge
322 numeral 323 rib
324 trigger link with slot 40
50 trigger 51 fixing bolt
60 resilient element 80 pneumatic tool
81 handle 82 gun body
83 airflow guiding set
Detailed Description
The technical means adopted by the invention to achieve the predetermined object of the invention are further described below with reference to the drawings and the preferred embodiments of the invention.
The present invention provides a device for using steering switch and transposition of pneumatic tool, which is disposed between a grip 81 and a gun body 82 of a pneumatic tool 80 as shown in fig. 1 (when the dominant hand is the right hand), and is fixed on the pneumatic tool 80 through a positioning pin 811 as shown in fig. 2 and 3, further, the pneumatic tool 80 is provided with an airflow guiding set 83 between the grip 81 and the gun body 82, and a cylinder set (not shown) communicating with the airflow guiding set 83 is disposed in the gun body 82, wherein the configuration and operation principle of the forward and reverse flow channels of the pneumatic tool 80 belong to the prior art in the technical field, and are not the main technical features of the present invention, and therefore, not described herein, the device for using steering switch and transposition of the present invention is provided with a switch set, a speed adjusting set and a trigger set, wherein:
referring to fig. 4 to 6, the switching set is combined with the handle 81 of the pneumatic tool 80 and located below the gun body 82, the switching valve set is provided with a forward/reverse valve 10 and a switching valve rod 20, wherein the forward/reverse valve 10 is disposed in the handle 81 and is communicated with the inside of the gun body 82, the forward/reverse valve 10 is a hollow cylinder, a valve hole 11 is disposed through an outer surface of the forward/reverse valve 10 adjacent to the rear end, the valve hole 11 is capable of communicating with the airflow guiding set 83 of the pneumatic tool 80, so that high-pressure air can enter the cylinder set of the gun body 82 through the valve hole 11 and the airflow guiding set 83, thereby allowing the pneumatic tool 80 to generate forward (clockwise rotation) or reverse (counterclockwise rotation), as shown in fig. 2, the front end of the forward/reverse valve 10 extends out of the handle 81 and is axially provided with a retainer 12 protruding on an outer side surface of the front end, the engaging seat 12 is a polygonal hollow seat body, and further, as shown in fig. 5 and 7, a plurality of engaging concave surfaces 121 are concavely formed on the outer surface of the engaging seat 12.
Preferably, as shown in fig. 4, 5 and 8, the forward/reverse rotation valve 10 is provided with a speed-adjusting positioning structure 13 on the outer surface adjacent to the detent seat 12, the speed-adjusting positioning structure 13 is provided with an accommodating convex portion 131 and a positioning bead 132, the accommodating convex portion 131 is radially protruded on the outer surface of the forward/reverse rotation valve 10 and is communicated with the interior of the forward/reverse rotation valve 10, the positioning bead 132 is disposed in the accommodating convex portion 131 and partially protrudes out of the inner surface of the forward/reverse rotation valve 10, and as shown in fig. 2 to 4, the forward/reverse rotation valve 10 is provided with a positioning pin groove 14 on the outer surface adjacent to the speed-adjusting positioning structure 13, so that the positioning pin 811 of the pneumatic tool 80 can fix the forward/reverse rotation valve 10 on the handle 81 through the positioning pin groove 14.
The switching valve rod 20 is detachably combined with the forward/reverse valve 10 and located at one side of the handle 81, the switching valve rod 20 is provided with a latch claw 21 and a toggle handle 22, the latch claw 21 is engaged with the latch base 12 of the forward/reverse valve 10, the latch claw 21 is U-shaped and has a notch 210, the inner surface of the latch claw 21 facing the forward/reverse valve 10 is as shown in fig. 6 and 7, two latch surfaces 211 respectively engaged with two latch concave surfaces 121 of the latch base 12 are formed, a latch groove 212 communicated with the notch 210 is concavely arranged on the outer side surface of the latch claw 21 far away from the forward/reverse valve 10, the latch groove 212 and the notch 210 form an annular structure, and the toggle handle 22 is convexly formed on the outer surface of the latch claw 21 far away from the notch 210, thereby providing the operation of the switching valve rod 20 for a user.
The speed adjusting set is combined with the switching set and located below the gun body 82, the speed adjusting set is provided with a speed adjusting button 30 capable of rotating and axially sliding, the speed adjusting button 30 is provided with a sleeve pipe 31 and a rotating disc 32, wherein the sleeve pipe 31 is a hollow pipe body and extends into the forward/reverse valve 10 through the clamping seat 12, the sleeve pipe 31 is axially recessed into the outer surface of the forward/reverse valve 10 to be provided with at least two bead grooves 311 arranged at intervals, so that the positioning beads 132 of the speed adjusting positioning structure 13 can be located in one of the bead grooves 311 as shown in fig. 4 and 8 and clamped with the sleeve pipe 31, wherein each axially arranged bead groove 311 can further enable the sleeve pipe 31 to axially move forward and backward relative to the forward/reverse valve 10 along the direction of the bead groove 311, and the outer end of the sleeve pipe 31 extends to be provided with the front side of the clamping jaw 21 through the clamping seat 12.
The rotating disc 32 is combined with the outer surface of the outer end of the sleeve pipe 31 and is positioned at the front side of the clamping pawl 21, the inner side of the rotating disc 32 facing the engaging groove 212 of the engaging pawl 21 is axially provided with a protruding engaging rim 321 surrounding the outer periphery of the sleeve pipe 21 and engaging with the engaging groove 212 and the notch 210 of the engaging pawl 21, so that the rotating disc 32 can abut against the engaging seat 12 and the engaging pawl 21 as shown in fig. 2 and 4, preferably, the outer side of the rotating disc 32 far from the clamping ring edge 321 is provided with a plurality of number labels 322 corresponding to the rotating speed, and a plurality of ribs 323 are protruded from the outer surface of the rotary disk 32 at intervals, so that the user can easily rotate the rotary disk 32, and further, as shown in fig. 4 and 5, the outer side of the rotating disc 32 away from the locking ring 321 is recessed with an accommodating groove 324 surrounding the outer end of the sleeve pipe 31.
The trigger set is combined with the switching set and the speed adjusting set to be located below the gun body 82, the trigger set is provided with a trigger link 40, a trigger 50 and an elastic element 60, the inner end of the trigger link 40 is located in the handle 81 and abuts against part of the components of the air flow guiding set 83 as shown in fig. 2 and 4, the front end of the trigger link 40 extends to the front side of the rotating disc 32 through the air flow guiding set 83, the forward/reverse rotation valve 10, the sleeve pipe 31 and the accommodating groove 324, the trigger 50 is combined with the front end of the trigger link 40 and is located at the front side of the speed adjusting knob 30, preferably, the trigger 50 is combined with the front end of the trigger link 40 through a fixing bolt 51 combined with the front end of the trigger link 40, wherein as shown in fig. 2 and 4, a space is provided between the trigger 50 and the rotating disc 32 of the speed adjusting knob 30, and the elastic element 60 is sleeved on the outer end of the trigger link 40 extending out of the speed adjusting knob 30 and is located in the accommodating groove 324 and abuts against the rotating disc 32 and the trigger 50, the rotating disc 32 is pushed by the elastic element 60 to abut against the latch 21, so that the annular locking edge 321 of the rotating disc 32 is located between the latching groove 212 and the notch 210 of the latch 21 and maintains the distance therebetween.
Please refer to fig. 1, when the user uses his/her right hand to hold the grip 81 of the pneumatic tool 80, the thumb of the right hand of the user is located at the toggle handle 22 of the switching valve rod 20, when the user wants to perform the forward or reverse turning operation on the pneumatic tool 80, the turning direction (forward or reverse) of the pneumatic tool 80 can be conveniently changed only by pulling the toggle handle 22 with the thumb as shown in fig. 9, the use is very convenient and easy, and in the process of pulling and switching as shown in fig. 2 and 4, besides providing a force for pushing the speed adjusting button 30 against the locking pawl 21 through the elastic element 60 located between the trigger 50 and the speed adjusting button 30, the locking ring 321 of the rotating disc 32 is engaged with the notch 210 and the locking groove 212 of the locking pawl 21, therefore, even when the pulling force of the thumb of the user is greater than the elastic force of the elastic element 60, the engagement and combination of the engaging rim 321 of the rotating disc 32 and the notches 210 and the engaging grooves 212 of the engaging pawls 21 can be used to effectively avoid the situation that the switching valve rod 20 and the speed knob 30 are separated or separated during the process of switching the rotating direction, and the switching valve rod 20 is not moved to the other side of the grip 81, so that the steering can be switched conveniently and safely, and the loss of each component after long-term use can be effectively avoided due to accurate positioning.
Further, when the user using the left hand is to use the pneumatic tool 80, please refer to fig. 10, at this time, as shown in fig. 4, the rotation speed button 30 is moved toward the trigger 50 along the axial direction of the trigger link 40 and compresses the elastic element 60, so that the engaging ring edge 321 of the rotation disc 32 is separated from the engaging groove 212 of the engaging pawl 21, wherein the engaging pawl 21 has a notch 210, so that the engaging pawl 21 can be directly drawn out from the engaging seat 12 to be separated from the forward/reverse rotation valve 10, and as shown in fig. 7, the engaging pawl 21 is engaged with the engaging concave surface 121 of the engaging seat 12 to be located at the other side of the grip 81, and after releasing the rotation speed button 30, the engaging ring edge 321 of the rotation disc 32 is engaged with the engaging groove 212 of the engaging pawl 21 through the compressed elastic element 60, so that the user using the left hand can use the left hand, the turning direction of the pneumatic tool 80 is controlled by pulling the toggle handle 22 of the switching valve rod 20 with the thumb of the left hand, which is very convenient and fast in transposition.
In addition, please refer to fig. 4 and 8, when the user adjusts the rotation speed of the pneumatic tool 80 by rotating the rotating disc 32, the positioning balls 132 of the speed-adjusting positioning structure 13 are engaged with the ball grooves 311 of the sleeve pipe 31, so that the user can not only provide a certain amount of rotation effect, but also avoid over-rotation of the speed-adjusting knob 30; further, when the switching valve rod 20 is damaged after long-term use and needs to be replaced, since the latch 21 of the switching valve rod 20 is a U-shaped structure with the notch 210, the switching valve rod 20 can be conveniently removed from the latch seat 12 of the forward/reverse valve 10 for replacement without disassembling the trigger 50, the elastic element 60 and the speed adjusting knob 30 when the switching valve rod 20 is replaced, thereby relatively reducing the time and cost required for maintenance and replacement.
In addition, in accordance with another preferred embodiment shown in fig. 11, the difference between the preferred embodiment shown in fig. 1 to 8 is: the latch 21 ' of the switching valve rod 20 ' further has a latching edge 213 ' protruding from each of two free end edges, so that the two latching edges 213 ' abut against one of the latching concave surfaces 121 of the latching seat 12 at the same time, providing further structural strength for latching, and allowing the switching valve rod 20 ' to be firmly latched and combined with the forward/reverse valve 10.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a pneumatic tool turn to and switch and transposition operative installations which characterized in that:
a switching group, the switching group is provided with a forward and reverse rotation valve and a switching valve rod, the forward and reverse rotation valve is a hollow cylinder, the outer surface of the forward and reverse rotation valve near the rear end is provided with a valve hole in a penetrating way, the outer side surface of the forward and reverse rotation valve at the front end is provided with a clamping base in an axial direction in a protruding way, the switching valve rod can be detachably combined with the forward and reverse rotation valve and is provided with a clamping claw and a toggle handle, the clamping claw is clamped and combined with the clamping base and is provided with a notch, the clamping claw is provided with a clamping groove communicated with the notch on the outer side surface far away from the forward and reverse rotation valve in a concave way, the clamping groove and the notch form an annular structure, and the toggle handle is convexly formed on the outer surface of the clamping claw far away from the notch;
a speed-adjusting group, which is combined with the switching group and is provided with a speed-adjusting button that can rotate and axially slide, the speed-adjusting button is provided with a sleeve pipe and a rotating disc, the sleeve pipe extends into the forward and reverse rotating valve through the clamping seat, the outer end of the sleeve pipe extends to the front side of the clamping claw through the clamping seat, the rotating disc is combined with the outer surface of the outer end of the sleeve pipe and is positioned at the front side of the clamping claw, the rotating disc is provided with a clamping ring edge that surrounds the outer periphery of the sleeve pipe and is combined with the clamping groove and the gap of the clamping claw in an axial direction of the inner side surface of the clamping claw, which faces the clamping claw, so that the rotating disc is attached to the clamping seat and the clamping claw; and
a trigger set, which is combined with the switching set and the speed regulating set and is provided with a trigger connecting rod, a trigger and an elastic element, wherein the front end of the trigger connecting rod extends to the front side of the rotating disc through the forward and reverse rotation valve and the sleeving pipe, the trigger is combined with the front end of the trigger connecting rod and is positioned at the front side of the speed regulating button, a space is arranged between the trigger and the rotating disc of the speed regulating button, the elastic element is sleeved on the outer end of the trigger connecting rod extending out of the speed regulating button and is abutted against the rotating disc and the trigger, so that the rotating disc is abutted against the clamping claw through the pushing of the elastic element, and the clamping ring edge of the rotating disc is positioned between the clamping groove and the gap of the clamping claw and keeps the space.
2. The device as claimed in claim 1, wherein the engaging seat is a polygonal hollow seat body, and the engaging seat has a plurality of engaging concave surfaces on an outer surface thereof, and the engaging pawl forms two engaging surfaces on an inner surface thereof facing the forward/reverse valve, the engaging surfaces engaging with the engaging concave surfaces of the engaging seat.
3. The device as claimed in claim 2, wherein the forward/reverse valve has a speed-adjusting positioning structure on an outer surface thereof adjacent to the detent seat, the speed-adjusting positioning structure has an accommodating protrusion and a positioning bead, the accommodating protrusion is radially protruded from the outer surface of the forward/reverse valve and communicates with the interior of the forward/reverse valve, the positioning bead is disposed in the accommodating protrusion and partially protrudes from the inner surface of the forward/reverse valve, the sleeve tube has at least two spaced bead grooves axially recessed in the outer surface thereof, the positioning bead of the speed-adjusting positioning structure is disposed in one of the grooves and engaged with the sleeve tube, and each axially disposed bead groove further enables the sleeve tube to slide forward and backward relative to the forward/reverse valve along the direction of the bead groove.
4. The device as claimed in claim 3, wherein the latch of the switching valve stem further has a protruding edge at each of two free ends thereof, such that the two protruding edges abut against one of the concave latch surfaces of the latch seat, thereby providing a further structural strength for latching and firmly engaging the switching valve stem with the forward/reverse valve.
5. The device as claimed in claim 4, wherein the positive/negative rotation valve has a positioning pin slot recessed on an outer surface thereof adjacent to the speed adjusting positioning structure, so that the pneumatic tool can be fixed to the pneumatic tool through a positioning pin engaged with the positioning pin slot.
6. The apparatus as claimed in claim 5, wherein the rotary disk has a plurality of numbers corresponding to the rotation speed on the outer surface thereof away from the locking rim, and a plurality of ribs protruding from the outer surface thereof for allowing a user to easily rotate the rotary disk.
7. The device as claimed in claim 6, wherein the outer surface of the rotary plate away from the locking ring is recessed with a receiving groove surrounding the outer end of the sleeve, and the elastic member is disposed on the outer end of the trigger link extending out of the speed adjusting knob and located in the receiving groove.
8. The apparatus for use in switching direction and changing position of a pneumatic tool as claimed in claim 7, wherein the trigger is coupled through a fixing pin coupled to a front end of the trigger link.
9. The device as claimed in claim 2, wherein the latch of the switching valve stem further has a protruding edge at each of two free ends thereof, such that the two protruding edges abut against one of the concave latch surfaces of the latch seat, thereby providing further structural strength for latching and firmly engaging the switching valve stem with the forward/reverse valve.
10. The device for use in switching between steering and changing position of a pneumatic tool as claimed in claim 1 or 2, wherein the outer side of the rotary plate away from the locking rim is recessed with a receiving groove surrounding the outer end of the sleeve, and the elastic member is sleeved on the outer end of the trigger link extending out of the speed adjusting knob and located in the receiving groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395777.1A CN107457747B (en) | 2016-06-06 | 2016-06-06 | Steering switching and transposition using device of pneumatic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395777.1A CN107457747B (en) | 2016-06-06 | 2016-06-06 | Steering switching and transposition using device of pneumatic tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107457747A CN107457747A (en) | 2017-12-12 |
| CN107457747B true CN107457747B (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610395777.1A Active CN107457747B (en) | 2016-06-06 | 2016-06-06 | Steering switching and transposition using device of pneumatic tool |
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| CN (1) | CN107457747B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975179A (en) * | 2011-09-06 | 2013-03-20 | 大里兴业有限公司 | Positive and negative turning control improved device of air tool |
| CN203527419U (en) * | 2013-09-16 | 2014-04-09 | 宏斌气动工业股份有限公司 | Pneumatic tool speed adjusting structure |
| CN205237926U (en) * | 2015-12-09 | 2016-05-18 | 冠亿齿轮股份有限公司 | Pneumatic tool of singlehanded switching -over and speed governing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004045117A1 (en) * | 2004-09-17 | 2006-03-23 | Robert Bosch Gmbh | switching device |
| JP2012096341A (en) * | 2010-11-05 | 2012-05-24 | Makita Corp | Rotary tool |
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2016
- 2016-06-06 CN CN201610395777.1A patent/CN107457747B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975179A (en) * | 2011-09-06 | 2013-03-20 | 大里兴业有限公司 | Positive and negative turning control improved device of air tool |
| CN203527419U (en) * | 2013-09-16 | 2014-04-09 | 宏斌气动工业股份有限公司 | Pneumatic tool speed adjusting structure |
| CN205237926U (en) * | 2015-12-09 | 2016-05-18 | 冠亿齿轮股份有限公司 | Pneumatic tool of singlehanded switching -over and speed governing |
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| CN107457747A (en) | 2017-12-12 |
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