TWI624334B - Pneumatic tool safety switch button - Google Patents

Abstract

The pneumatic tool safety switching button of the present invention has a pair of positioning grooves recessed on both sides of a mounting hole of a positioning seat, a rotating member is rotatably inserted into the mounting hole, and two rotating shafts are formed on the rotating shaft Pairing the switching planes, and optionally, the pair of switching planes are correspondingly parallel to the pair of positioning slots, and then inserting the elastic U-shaped safety pins correspondingly in the pair of positioning slots, and the two of the safety latches The end portion is clamped on the pair of switching planes of the pair of positioning grooves corresponding to the pair of positioning grooves, thereby achieving the effect of stably fixing the rotating member, thereby avoiding sudden turning of the pneumatic tool during operation and reducing damage of the component.

Description

Pneumatic tool safety switch button

The invention relates to a pneumatic tool component, in particular to a pneumatic tool safety switching button.

The pneumatic tool is a machine tool that uses a compressed air of an air compressor to drive a pneumatic motor, and the pneumatic tool can be used as a pneumatic drilling machine, a pneumatic striking device, a pneumatic socket wrench, a pneumatic ratchet wrench by assembling different tool heads... The utility model uses the air ratchet socket wrench 90 as shown in FIG. 7 and FIG. 8 . During operation, the user can switch the rotary knob according to actual needs to control the forward or reverse rotation of the motor.

The structure design of the existing pneumatic tool switching button, as shown in FIG. 7 and FIG. 8, is mainly to insert a reversing support member 92 in the radial direction of the rotating shaft 91 of a rotary button, and one end of the reversing support member 92. The ball 93 abuts against a swinging block 94, and adjacent two concave grooves 95 are adjacently recessed on the abutting surface of the swinging block 94. When the rotary button is switched to one side, the reversing support member 92 is The ball 93 abuts against the groove 95 on one side of the swinging block 94 to rotate the pneumatic tool in one direction. When the rotary button is switched to the other side, the ball 93 of the reversing support member 92 abuts against the other side of the swinging block 94. Within the recess 95, the pneumatic tool is rotated in the other direction.

Since the switching knob of the existing pneumatic tool is positioned by the ball 93 at the end of the reversing support member 92 abutting against one of the grooves 95 of the swinging block 94, when the pneumatic tool encounters a large vibration, or When the pneumatic tool is a pneumatic tool, the reversing support member 92 of the switching knob is It is easy to bounce into another groove 95 due to vibration, so that the pneumatic tool suddenly rotates in reverse, which not only causes work hazard, but also causes damage to the internal parts of the pneumatic tool, and there is still room for improvement.

Since the positioning structure of the switching button of the existing pneumatic tool is not stable, it is easy to switch the steering arbitrarily due to the vibration bounce, thereby causing work hazard and damage of the component. To solve this problem, the present invention provides a pneumatic tool safety switching button. It can achieve the effect of maintaining the position of the switch button stably.

The pneumatic tool safety switching button of the present invention comprises: a positioning seat, a positioning portion is protruded from a side surface thereof, and a mounting hole is recessed in the center of the positioning portion, and the two sides of the mounting hole are concavely disposed with each other a pair of positioning grooves that are parallel and respectively connected to the mounting hole; a rotating member rotatably inserted into the mounting hole of the positioning seat, and includes a stopping portion, a rotating shaft and a button head The stopping portion abuts against the positioning portion, the rotating shaft is disposed at the center of the inner side surface of the stopping portion, and is inserted into the mounting hole, and the rotating shaft is formed at two and two positions near the stopping portion. Two pairs of switching planes that are oppositely arranged and staggered, the pair of switching planes are parallel to each other, and selectively switchable such that a pair of switching planes are parallel to the pair of positioning slots, the button head being disposed on an outer side of the stopping portion; A safety pin is a U-shaped elastic member, and the two ends are correspondingly inserted into the pair of positioning grooves of the positioning seat, and are clamped on the pair of switching planes corresponding to the pair of positioning grooves.

Preferably, the outer diameter of the two ends of the safety pin is smaller than the width of the corresponding positioning groove; preferably, the positioning seat is provided with a limiting hole on the positioning portion; The limiting portion forms an arc-shaped limiting recess at a position corresponding to the limiting hole; the limiting recess and the limiting hole respectively receive a limiting rod; Preferably, the pair of positioning grooves can form a U-shaped positioning groove that communicates with each other at one end; preferably, the button head has a font shape; preferably, the positioning seat is The other side is provided with a set of joints; preferably, the pneumatic tool safety switch button, wherein the positioning seat is provided with a pivot hole on one side, and an axial extension is formed on the outer peripheral surface. And a semi-circular accommodating groove, the accommodating groove is connected to the mounting hole and the pivoting hole; the rotating member is recessed in a radial direction on the outer circumferential surface of the rotating shaft, the concave hole Corresponding to the accommodating groove; and the pneumatic tool safety switching button further includes a swinging block, a pivoting rod, and a reversing support member, wherein the swinging block is slidably received in the receiving groove of the positioning seat And selectively switching the steering of the pneumatic tool, the swinging block forming a shaft hole in the center, and forming two spaced apart adjacent switching grooves on the bottom surface; the pivoting rod is inserted into the pivoting hole of the positioning seat and the In the shaft hole of the swinging block; the reversing support member is received in the receiving groove of the positioning seat, and One end of the rotating shaft is inserted into the recessed hole of the rotating shaft, and the other end is selectively abutted in one of the switching grooves of the swinging block; preferably, the rotating member is stopped. The blocking portion forms a through hole at a position corresponding to the pivot hole; the pivoting rod passes through the through hole and is inserted into the pivot hole of the positioning seat and the shaft hole of the swing block.

The pneumatic tool safety switching button of the present invention is correspondingly inserted into the pair of positioning slots of the positioning seat by using a U-shaped safety pin having elasticity, so that both ends of the safety pin are respectively clamped on the rotating member. In the pair of switching planes, the structure design through the double-sided clamping achieves the effect of stably fixing the rotating member, so that the rotating member is not loosely rotated by the vibration, and the position of the switching button can be effectively maintained, and the pneumatic tool can be avoided. Sudden steering during actuation increases the safety of pneumatic tools and reduces parts damage and service life.

10‧‧‧ Positioning Block

11‧‧‧ Positioning Department

12‧‧‧Installation holes

13‧‧‧ positioning slot

14‧‧‧Pivot hole

15‧‧‧Limited holes

16‧‧‧ accommodating slots

17‧‧‧Team

20‧‧‧Rotating parts

21‧‧‧stop

211‧‧‧ Limit notch

22‧‧‧ shaft

210‧‧‧ through the notch

220‧‧‧ recessed hole

221, 222‧‧‧Switch plane

23‧‧‧ button head

30‧‧‧Safety bolt

40‧‧‧Swing block

41‧‧‧Axis hole

50‧‧‧ pivot rod

60‧‧‧Reversing support

70‧‧‧Limited rod

80‧‧‧Air Ratchet Socket Wrench

81‧‧‧Shell

810‧‧‧ openings

82‧‧‧ ratchet parts

820‧‧‧ ratchet

92‧‧‧Reversing support

93‧‧‧ balls

94‧‧‧Swing block

95‧‧‧ Groove

Figure 1 is a perspective view showing the appearance of the present invention.

Figure 2 is an exploded perspective view of the present invention.

Figure 3 is an exploded perspective view of the present invention mounted on a pneumatic ratchet socket wrench.

4 to 6 are cross-sectional views showing the continuous operation of the pneumatic ratchet socket wrench and the rotating rotary member according to the present invention.

7 and 8 are cross-sectional views showing the continuous operation of the conventional pneumatic tool switching knob for switching the rotary knob.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following further describes the following: a pneumatic tool safety switching button of the present invention. Please refer to FIG. 1 and FIG. 2 , which includes a positioning base 10 , a rotating member 20 , a safety latch 30 , a swinging block 40 , a pivoting rod 50 , a reversing support member 60 , and a limiting rod 70 . The positioning base 10 is a column-shaped cylinder, and a positioning portion 11 is protruded from a side surface thereof. The positioning portion 11 is recessed in the center of the mounting portion 11 and is recessed on both sides of the mounting hole 12 Preferably, the pair of positioning grooves 13 can form a U-shaped positioning groove communicating with each other at one end; the positioning seat 10 is adjacent to the periphery of the positioning portion 11 A pivot hole 14 and a limiting hole 15 are respectively disposed on the opposite sides, and an axially extending and semi-circular receiving groove 16 is defined in the outer peripheral surface, and the receiving groove 16 is connected to the mounting a hole 12 and the pivot hole 14 . The positioning base 10 has a pair of joints 17 on a side different from the positioning portion 11 . The set of joints 17 can be a tool head of various pneumatic tools. Preferably, the set of joints 17 is a sleeve positioning structure that can be coupled to the sleeve; the rotary member 20 is rotatably inserted in the positioning. The mounting hole 12 of the seat 10 includes a stop portion 21, a rotating shaft 22 and a button head 23, and the stopping portion 21 has a disk shape and abuts against the positioning portion 11, and corresponds to The position of the pivot hole 14 is formed through a notch 210, corresponding to the position of the limit hole 15 A long arc-shaped limiting recess 211 is formed. The rotating shaft 22 is integrally protruded from the center of the inner side surface of the stopping portion 21 and inserted into the mounting hole 12 of the positioning base 10, and the outer circumference of the rotating shaft 22 A concave hole 220 is defined in the radial direction of the surface, and the concave hole 220 corresponds to the accommodating groove 16; please refer to FIG. 1 , FIG. 2 and FIG. 4 to FIG. 6 , and the rotating shaft 22 is located near the stopping portion 21 . Further forming two pairs of switching planes 221, 222 which are oppositely arranged and staggered, the pair of switching planes 221, 222 are parallel to each other, and can be selectively switched such that a pair of switching planes 221, 222 are parallel to the positioning seat Preferably, the pair of switching planes 221, 222 can be square or diamond-shaped or other shapes of parallelograms; the button head 23 is integrally protruded from the stop in a letter shape. The outer side of the portion 21 is for the user to rotate and switch. The safety pin 30 is a U-shaped elastic member having a circular cross section, and the two ends of the portion are correspondingly inserted into the pair of positioning slots 13 of the positioning base 10. And abutting the rotating shaft 22 corresponding to the pair of switching planes 221, 222 of the pair of positioning slots 13, The rotating member 20 is firmly clamped to prevent the rotating member 20 from rotating relative to the positioning seat 10 due to vibration, and the outer diameters of the two ends of the safety pin 30 (ie, the diameter of the circular cross section) are respectively smaller than Corresponding to the width of the positioning slot 13; the swinging block 40 is slidably received in the receiving slot 16 of the positioning base 10, and selectively switches the steering of the pneumatic tool (for example, the swinging side is forward) The swinging block 40 is formed with a shaft hole 41 at the center, and two adjacent switching grooves 42 are formed on the bottom surface; the passing of the pivoting rod 50 through the rotating member 20 a recess 210 is inserted into the pivot hole 14 of the positioning base 10 and the shaft hole 41 of the swing block 40; the reversing support member 60 is received in the receiving slot 16 of the positioning base 10. And the one end is inserted into the recessed hole 220 of the rotating shaft 22 at one end, and the other end is selectively abutted in one of the switching slots 42 of the swinging block 40; the limiting rod 70 corresponds to It is received in the limiting recess 211 of the stopping piece 21 of the rotating member 20, and is inserted into the limiting hole 15 of the positioning seat 10 when the switching pneumatic tool is forward rotation or Reverse When the limiting rod 70 abuts against one end of the limiting recess 211 on the rotating member 20, thereby limiting the range of rotation of the rotating member 20; the pneumatic tool safety switching button of the present invention is installed on When the air ratchet socket wrench 80 is attached, referring to FIG. 3, the pneumatic tool safety switching button is fixedly inserted into the housing 81 and the ratchet member 82 of the air ratchet socket wrench 80, and the ratchet block 40 is engaged with the ratchet wheel. The ratchet 820 of the member 82, and the button head 23 of the rotary member 20 corresponding to and expose the opening 810 of the housing 81 for rotation switching; please refer to FIG. 2 to FIG. 6, when switching the pneumatic tool When turning, the button head 23 of the rotating member 20 is twisted to rotate the rotating shaft 22 of the rotating member 20 relative to the positioning seat 10 and the safety pin 30. Since the safety pin 30 is an elastic member and both ends are The outer diameter is smaller than the corresponding width of the positioning slot 13 . Therefore, the angle between the two pairs of switching planes 221 , 222 on the rotating shaft 22 elastically expands the two ends of the safety plug 30 (as shown in FIG. 5 ). After the rotating shaft 22 is switched to correspond to the switching plane 222 corresponding to the positioning groove 13, the safety plug 30 is The elastically resetting is clamped on the other pair of switching planes 222. At this time, the reversing support member 60 also rotates with the rotating shaft 22 and switches to another switching slot 42 that abuts against the swinging block 40. In this way, the steering operation of the pneumatic tool can be switched. The pneumatic tool safety switching button of the present invention is mainly inserted into the pair of positioning slots 13 of the positioning seat 10 by using the U-shaped safety pin 30 having elasticity. The two ends of the safety pin 30 are respectively clamped on the pair of switching planes 221 and 222 of the rotating member 20, and the structure of the double-sided clamping is adopted to achieve the effect of stably fixing the rotating member 20. The rotating member 20 is not loosely rotated by the vibration, and the position of the switching button can be effectively maintained, thereby avoiding the sudden turning of the pneumatic tool during the operation, thereby increasing the safety of the operation of the pneumatic tool, and reducing the damage of the parts and prolonging the service life. .

Claims (8)

The utility model relates to a pneumatic tool safety switching button, which comprises: a positioning seat, a positioning portion is protruded from a side surface thereof, and a positioning hole is recessed in a center of the positioning portion, and the two sides of the mounting hole are concavely arranged parallel to each other and a pair of positioning slots respectively communicating with the mounting holes; a rotating member rotatably inserted into the mounting hole of the positioning seat, and comprising a stopping portion, a rotating shaft and a button head, wherein The stopping portion abuts against the positioning portion, the rotating shaft is disposed at the center of the inner side surface of the stopping portion, and is inserted into the mounting hole, and the rotating shaft is formed opposite to each other at the position of the stopping portion Interlaced two pairs of switching planes, the pairs of switching planes are parallel to each other, and selectively switchable such that a pair of switching planes are parallel to the pair of positioning slots, the button head is disposed on the outer side of the stopping portion; The latch is a U-shaped elastic member, and the two ends of the elastic member are correspondingly inserted into the pair of positioning slots of the positioning seat, and are clamped on the pair of switching planes of the pair of positioning slots. The pneumatic tool safety switching button of claim 1, wherein the outer diameters of the two ends of the safety pin are respectively smaller than the corresponding width of the positioning groove. The pneumatic tool safety switching button of claim 1, wherein the positioning seat is provided with a limiting hole on the positioning portion; the stopping portion forms an arc limit at a position corresponding to the limiting hole. a notch; the limiting notch and the limiting hole correspondingly receive a limiting rod. The pneumatic tool safety switching button of claim 1, wherein the pair of positioning grooves can form U-shaped positioning grooves that communicate with each other at one end. The pneumatic tool safety switching button of claim 1, wherein the button head is in a line shape. The pneumatic tool safety switching button of claim 1, wherein the positioning seat is provided with a set of joints on the other side. The pneumatic tool safety switching knob according to any one of claims 1 to 6, wherein the positioning seat is provided with a pivot hole on one side and an axial extension and a half on the outer peripheral surface. a circular accommodating groove, the accommodating groove is connected to the mounting hole and the pivoting hole; the rotating member is recessed in a radial direction on the outer circumferential surface of the rotating shaft, and the concave hole corresponds to the hole The accommodating slot; the pneumatic tool safety switching button further includes a swinging block, a pivoting rod, and a reversing support member, wherein the swinging block is slidably received in the receiving groove of the positioning seat, and Selectively switching the steering of the pneumatic tool, the swinging block forming a shaft hole in the center, and forming two spaced apart adjacent switching grooves on the bottom surface; the pivoting rod is inserted into the pivoting hole of the positioning seat and the swinging block In the shaft hole, the reversing support member is received in the receiving groove of the positioning seat, and is inserted into the concave hole of the rotating shaft at one end, and the other end is selectively abutted In one of the switching slots of the wobble block. The pneumatic tool safety switching button of claim 7, wherein the stopping portion of the rotating member forms a through hole at a position corresponding to the pivoting hole; the pivoting rod passes through the through hole And inserted into the pivot hole of the positioning seat and the shaft hole of the swing block.