TWI828430B - Pneumatic tool for removing nozzle - Google Patents

Abstract

A Pneumatic tool for removing nozzles includes a connecting member, a handle member, a first fixing member, an intermediate member, a second fixing member, and an actuating member. The connecting member has a main airway. The handle member is connected with the connecting piece, and has an input airway in communication with the main airway. Two sides of the intermediate member are respectively inserted into the first and the second fixing members through a positioning pillar, so as to form a terminal assembly to be disposed on one end of the connecting member. The actuating is mounted around the connecting member, and includes a lower and upper leakage holes. During inflation, the gas is discharged through the first and second fixing members toward the lower and upper leakage holes, such that the actuating member imposes an oscillating force to the nozzle for removing the nozzle.

Description

Pneumatic tool for removing fuel injectors

The present invention relates to a pneumatic tool, in particular to a pneumatic tool for disassembling a fuel injection nozzle.

According to the Republic of China Patent No. M455067, it discloses an improved structure of a puller for a fuel injector. The puller includes a holding component and a set piece. The sleeve is connected to the fuel injector, and the sleeve can be used for the connection and assembly of the holding assembly. The holding assembly includes a connecting rod and a holding bucket set on the outside of the connecting rod. When the user holds the holding bucket When pulling upward, the inner wall of the holding barrel abuts against the enlarged diameter portion of the connecting rod, thereby driving the set piece to pull out and remove the injector.

However, in the above-mentioned use, the holding bucket must be pulled manually to achieve the purpose of removing the fuel injector, which is time-consuming and labor-intensive.

In order to solve the above problems, the present invention discloses a pneumatic tool for disassembling the fuel injection nozzle, which generates an oscillating force in a pneumatic manner to achieve the function and purpose of vibrating and disassembling the fuel injection nozzle.

To achieve the above object, an embodiment of the present invention provides a pneumatic tool for disassembling a fuel injector, which includes a connecting piece, a holding piece, a first fixing piece, a middle piece, and a second fixing piece. and an actuator. The connecting piece is provided with a main airway along an axial direction and a first connecting end and a second connecting end arranged oppositely; the holding piece is connected to the connecting piece, and the holding piece has an input airway connected to the main airway; the first fixed The component assembly is provided at the second connection end and has an air hole connected to the main airway. The first fixing member has a plurality of first sockets; the middle piece has a through hole connected to the air hole, and the middle piece has a plurality of first holes integrally protruding from both sides. A positioning post and a plurality of second positioning posts, the first positioning post is assembled in the first socket; the second fixing member has a plurality of second sockets, and the second socket is for the second positioning post to be assembled; the actuator is sleeved on the connection The actuating member has a base at one end and a barrel at the other end. The base has a lower leak hole and the barrel has an upper leak hole. When inflated, the gas system is discharged to the upper leak hole through the second socket and through the first socket. The hole row leaks holes downward, causing the actuator to produce oscillating displacement along the axial direction.

The present invention pneumatically drives the actuating member to produce oscillating displacement along the axial direction of the connecting piece to transmit the oscillating force to the fuel injector, thereby achieving the purpose of disassembling the fuel injector, and is labor-saving and time-saving in use.

Furthermore, the first positioning post and the second positioning post of the middle part of the present invention are made in one piece, so that the first positioning post and the second positioning post of the middle part are respectively inserted into the first fixing part and the second fixing part. When the first jack and the second jack are used, precise positioning results can be obtained, and the gas flow will not be affected by the deflection of the positioning column. It can also prevent the difference in construction angle from affecting the actuator when the pneumatic tool is used. Normal movement.

1: Pneumatic tools

10: Connectors

11: Main airway

12: First connection end

13: Second connection terminal

131: Binding hole

20: Grip piece

21: Input airway

30:First fixing piece

31: pores

32:First jack

321:Flange

33:Combining hole

40:Middleware

41: Piercing

42:First positioning column

43:Second positioning column

50:Second fixing piece

51:Second jack

511:Flange

52:Combining hole

60: Spacer ring

70:Actuating parts

71:Base

711:Lower leak hole

711a: First leak hole

711b: Second leak hole

712: Side 1

713:Second side

72: Barrel part

721: Upper leak hole

73:Screws

714: Accommodation hole

715: Binding hole

80:Lock firmware

90: Exhaust adjustment device

91:Shading ring

911:convex part

912:Exhaust hole

913: First positioning hole

914: Second positioning hole

92:Blocking ring

921: Binding hole

93:Rotating parts

931:Connection pin

94:Limiting piece

941:Limit slot

942:Combining hole

200: Positioning device

201: Steel ball

202:Spring

X:Axis

A1: First space

A2:Second space

[Fig. 1] is a schematic three-dimensional appearance diagram of the pneumatic tool used to disassemble the fuel injector according to the present invention.

[Fig. 2] is an exploded schematic diagram of a part of the structure of the pneumatic tool used to disassemble the fuel injector according to the present invention.

[Fig. 3] is an exploded schematic view of another part of the pneumatic tool for disassembling the fuel injector of the present invention.

[Fig. 4] is a side view showing the shielding ring in the first position in the embodiment of the present invention. In this first position, the shielding ring shields the second leak hole, and part of the exhaust hole is connected to the first leak hole.

[Fig. 5] is a side view showing the shielding ring in the second position in the embodiment of the present invention. In this second position, the shielding ring shields the first leak hole, and all the exhaust holes are connected to the second leak hole.

[Fig. 6] is a cross-sectional view taken along the section line 6-6 in Fig. 1 of the present invention.

[Fig. 7] is a schematic diagram of the operation of the pneumatic tool for disassembling the fuel injector according to the present invention for inflating.

Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is not intended to limit the technical principles of the present invention to the specifically disclosed embodiments, but the scope of the present invention is limited only by the scope of the patent application and covers substitutions, modifications and equivalent.

Referring to FIGS. 1 to 7 , the present invention has a pneumatic tool 1 for disassembling a fuel injector, which includes a connecting piece 10 , a holding piece 20 , an end assembly and an actuating piece 70 . The end assembly includes a first fixing part 30, a middle part 40, a second fixing part 50 and a spacer ring 60.

The connecting piece 10 is in the shape of a rod. The connecting piece 10 is provided with a main air channel 11 along an axial direction X and a first connecting end 12 and a second connecting end 13 arranged oppositely. The first connecting end 12 can be connected to the fuel injection nozzle (not shown in the figure) through an assembly.

The holding part 20 is vertically connected to the connecting part 10 to provide the user with convenience to hold and use. The holding member 20 has an input air channel 21. One end of the input air channel 21 can be connected to the air pressure source, and the other end is connected to the main air channel 11.

The aforementioned end assembly is installed on the second connection end 13 of the connector 10 . In the embodiment of the present invention, the first fixing member 30 is disc-shaped and is disposed at the second connecting end 13 and has an air hole 31 connected to the main airway 11 . The first fixing member 30 also has a plurality of first insertion holes 32 located at the periphery of the air hole 31 . Among them, the number of the first sockets 32 is three, and the first sockets 32 are not circular holes and have a flange 321 on the inner edge thereof.

The middle piece 40 is disc-shaped, with a triangular through hole 41 in the center connected to the air hole 31. The middle piece 40 has a plurality of first positioning posts 42 and a plurality of second positioning posts 43 integrally extending on both sides. A positioning post 42 and a second positioning post 43 are coaxially arranged. The number of the first positioning posts 42 is three and they are arranged in the first socket 32 and are pressed against the first positioning post 42 by the flange 321 in the first socket 32 . The periphery of a positioning post 42 forms a positioning position, and there is still a gap between the first positioning post 42 and the inner wall of the first insertion hole 32 to allow gas to pass.

The second fixing part 50 is disk-shaped, and its outer dimensions are similar to the first fixing part 30 . The second fixing member 50 has a plurality of second insertion holes 51 , and the number of the second insertion holes 51 is three, for inserting and assembling the same number of second positioning posts 43 . The second insertion hole 51 is not a circular hole, but has a flange 511 on its inner edge. The flange 511 in the second insertion hole 51 can be positioned against the periphery of the second positioning post 43, and There is still a gap between the second positioning post 43 and the inner wall of the second insertion hole 51 to allow gas to pass. In particular, since the first positioning post 42 and the second positioning post 43 of the middle piece 40 are made in one piece, the first positioning post 42 and the second positioning post 43 of the middle piece 40 are respectively inserted into the first fixed position. When the component 30 and the second fixing component 50 are connected, a precise positioning effect can be obtained, and the gas flow will not be affected by distortion.

In the embodiment of the present invention, a plurality of fasteners 80 are further included. The fasteners 80 sequentially extend through the combination hole 52 of the second fixing part 50, the through hole 41 of the middle part 40, and the combination hole 33 of the first fixing part 30. The lock is provided in the combination hole 131 of the second connection end 13 of the connector 10 .

The spacer ring 60 is disposed between the first fixing part 30 and the second fixing part 50 and sleeved on the periphery of the middle part 40 , and the height of the spacer ring 60 is greater than the height of the middle part 40 .

The actuating member 70 is sleeved on the connecting member 10 . One end of the actuating member 70 has a base portion 71 and the other end has a barrel portion 72 . The base portion 71 and the barrel portion 72 are assembled together through a screw 73 . The base part 71 has a lower leak hole 711, the barrel part 72 has an upper leak hole 721, the base part 71 has a first surface 712 facing away from the first fixing member 30 and an opposite second surface 713, and the lower leak hole 711 passes through it. Between the first side 712 and the second side 713 . When the input air channel 21 inputs gas for inflation, the gas system rows upward leak holes 721 through the second jack 51 and downward leak holes 711 through the first jack 32, causing the actuator 70 to generate oscillating displacement along the axial direction X. In order to facilitate the application of shock force to the fuel injector, the purpose of disassembling the fuel injector is achieved.

As shown in FIG. 3 , in another embodiment of the present invention, an exhaust adjustment device 90 is provided on the base 71 for adjusting the gas leakage amount of the lower leakage hole 711 . The exhaust adjustment device 90 includes a shielding ring 91 , a blocking ring 92 , a rotating member 93 and two limiting members 94 . The shielding ring 91 and the blocking ring 92 are coupled to the first surface 712 of the base 71 through the screws 73 , and the shielding ring 91 is located between the first surface 712 and the blocking ring 92 , and the shielding ring 91 can be relative to the connector 10 on a first surface. Rotate between a first position and a second position to adjust the gas leakage amount of the lower leakage hole 711. In addition, a protrusion 911 is provided on both sides of the shielding ring 91 .

The lower leakage hole 711 includes a plurality of first leakage holes 711a and a plurality of second leakage holes 711b. The number of the second leakage holes 711b is greater than the number of the first leakage holes 711a. For example, the number of the first leakage holes 711a is 2. , the number of the second leak holes 711b is 6, and the shielding ring 91 has a plurality of exhaust holes 912 around the connector 10 , for example, 6 exhaust holes 912 .

Furthermore, the rotating member 93 is sleeved on the base 71 and the periphery of the shielding ring 91 . Both sides of the rotating member 93 are connected to the shielding ring 91 by a connecting pin 931 , so that the rotating member 93 can rotate to drive and shield. Ring 91. In the embodiment of the present invention, the two limiting members 94 are half-moon shaped. The two limiting members 94 are fixed to the first surface 712 through the screws 73 , and the two limiting members 94 are opposite to the two convex portions 911 of the shielding ring 91 Two limiting grooves 941 are formed therebetween to limit the rotation range of the shielding ring 91 . In addition, the connecting pin 931 is provided between the protruding portion 911 and the rotating member 93 . The screw 73 extends through the coupling hole 921 of the blocking ring 92 and the coupling hole 942 of the limiting member 94 and is locked in the coupling hole 715 of the base 71 .

Please refer to Figure 4. When in the first position, the shielding ring 91 covers the second leak hole 711b, and part of the exhaust hole 912 is connected to the first leak hole 711a. At this time, the gas leakage amount of the lower leak hole 711 is small. .

Please refer to FIG. 5 . When the user rotates the rotating member 93 to rotate the shielding ring 91 to the second position, the shielding ring 91 shields the first leakage hole 711a, and all the exhaust holes 912 are connected to the second leakage hole 711b. , at this time, the gas leakage amount of the lower leakage hole 711 is larger. Accordingly, through the operation of the rotating member 93, the oscillating force acting on the fuel injector can be adjusted.

In another embodiment of the present invention, there is a positioning device 200 between the base 71 and the shielding ring 91 to position the shielding ring 91 in the first position or the second position. Among them, the positioning device 200 includes a steel ball 201 and a spring 202. The first surface 712 has a receiving hole 714. The shielding ring 91 has a first positioning hole 913 and a second positioning hole 913 and a second positioning hole 913 arranged at an angle with the axis In the positioning hole 914, the spring 202 is installed in the receiving hole 714 and selectively holds the steel ball 201 toward the first positioning hole 913 or the second positioning hole 914, so that the shielding ring 91 is positioned in the first position or the second position. Further, as shown in FIG. 3 , the positioning devices 200 may be of two groups.

Please refer to FIG. 2 and FIG. 6 . Before use of the present invention (in the uninflated state), the barrel 72 of the actuating member 70 is pressed against the second fixing member 50 due to its own weight, and the first fixing member 30 A first space A1 is formed between the base 71 and the base 71 , which is the lowest position of the actuator 70 .

Please refer to FIGS. 2 and 7 . When the present invention is in use (inflated), the gas from the air pressure source passes through the input air channel 21 of the holding member 20 , the main air channel 11 of the connecting member 10 , and the first fixing member 30 The air hole 31, the through hole 41 of the middle piece 40 and the second insertion hole 51 of the second fixing piece 50 are introduced between the second fixing piece 50 and the barrel portion 72, so that the actuating piece 70 rises relative to the axial direction X of the connecting piece 10, A second space A2 is formed between the second fixing part 50 and the barrel part 72 , and the base part 71 is against the first fixing part 30 , which is the highest position of the actuating part 70 . Accordingly, under the continuous input of gas, the actuating member 70 repeatedly oscillates and moves between the positions shown in Figures 6 and 7, so as to facilitate the application of oscillating force to the fuel injector and achieve the purpose of disassembling the fuel injector.

Thereby, the present invention generates reciprocating vibration in a pneumatic manner to achieve the purpose of disassembling the fuel injector in a labor-saving and time-saving manner.

In addition, the middle piece 40 of the present invention and its positioning posts are made in one piece, so that each positioning post and each socket can be accurately positioned without being skewed and affecting the gas circulation. It also allows the pneumatic tool 1 to be operated without any problems. The difference in construction angle will affect the normal displacement of the actuator 70 .

Although the present invention has been described with a preferred embodiment, those skilled in the art can make various modifications without departing from the spirit and scope of the present invention. The foregoing embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. All modifications or changes that do not violate the spirit of the present invention fall within the scope of the patent application of the present invention.

10: Connectors

11: Main airway

12: First connection end

13: Second connection terminal

131: Binding hole

20: Grip piece

30:First fixing piece

31: pores

32:First jack

321:Flange

33:Combining hole

40:Middleware

41: Piercing

42:First positioning column

43:Second positioning column

50:Second fixing piece

51:Second jack

511:Flange

52:Combining hole

60: Spacer ring

70:Actuating parts

71:Base

711:Lower leak hole

711a: First leak hole

711b: Second leak hole

713:Second side

72: Barrel part

721: Upper leak hole

73:Screws

80:Lock firmware

90: Exhaust adjustment device

X:Axis

Claims (10)

A pneumatic tool for disassembling a fuel injection nozzle, which includes: a connecting piece, which is provided with a main air channel along an axial direction and a first connecting end and a second connecting end arranged oppositely; a holding piece, Connected to the connecting piece, the holding piece has an input airway connected to the main airway; a first fixing part is assembled at the second connecting end and has an air hole connected to the main airway, the first fixing part It has a plurality of first sockets; an intermediate piece has a through hole connected to the air hole, and the middle piece is provided with a plurality of first positioning posts and a plurality of second positioning posts on both sides, and the first positioning posts are arranged on these first sockets; a second fixing member having a plurality of second sockets, the second sockets being used for assembling the second positioning posts; and an actuating member sleeved on the connecting member, The actuator has a base at one end and a barrel at the other end. The base has a lower leak hole. The barrel has an upper leak hole. When inflated, the gas system is discharged to the upper leak hole through the second jacks. And the first insertion holes are arranged toward the lower leakage holes, causing the actuating member to generate oscillating displacement along the axial direction. The pneumatic tool for disassembling the fuel injector as described in claim 1 further includes an exhaust adjustment device located on the base for adjusting the gas leakage amount of the lower leak hole; the first positioning posts and the The second positioning posts are integrally formed with the middle piece. The pneumatic tool for disassembling the fuel injector as described in claim 2, wherein the exhaust adjustment device is provided on the periphery of the connecting piece and includes a shielding ring and a blocking ring, and the base has a base facing away from the first fixing piece. The first side and an opposite second side, the lower leakage hole penetrates between the first side and the second side, the blocking ring and the shielding ring are installed on the first side, and the shielding ring is located The first side and the block between the rings, the shielding ring can rotate between a first position and a second position relative to the connecting piece; the lower leakage hole includes a plurality of first leakage holes and a plurality of second leakage holes, and the second leakage holes The number of holes is greater than the number of the first leak holes, and the shield has a plurality of exhaust holes surrounding the connector; in the first position, the shield ring shields the second leak holes, and part of the second leak holes The exhaust holes are connected to the first leak holes. When in the second position, the shielding ring blocks the first leak holes, and all the exhaust holes are connected to the second leak holes. The pneumatic tool for disassembling the fuel injector according to claim 3, wherein a positioning device is provided between the base and the shielding ring to position the shielding ring in the first position or the second position. The pneumatic tool for disassembling the fuel injector as described in claim 4, wherein the positioning device includes a steel ball and a spring, the first surface has a receiving hole, and the shielding ring has a shape centered on the axial direction. A first positioning hole and a second positioning hole are arranged at an angle. The spring is installed in the accommodating hole and selectively holds the steel ball toward the first positioning hole or the second positioning hole, so that the shielding ring is positioned at the first position or the second position. The pneumatic tool for disassembling the fuel injector as described in claim 3, wherein the exhaust adjustment device further includes a rotating member that is sleeved on the base and the periphery of the shielding ring. Both sides of the rotating member are respectively There is a connecting pin connected with the shielding ring, so that the rotating member can rotate and drive the shielding ring; a protrusion is provided on both sides of the shielding ring, and the exhaust adjustment device further includes two limiting parts. The two limiting members are fixed on the first surface, and two limiting grooves are formed between the two limiting members relative to the two convex portions of the shielding ring to limit the rotation range of the shielding ring. The pneumatic tool for disassembling the fuel injector as described in claim 1, wherein the first insertion holes and the second insertion holes are non-circular holes, and the first positioning posts and the second insertion holes are non-circular holes. The positioning posts are all Circular pillars, the inner edges of the first jack holes and the second jack holes each have a flange for abutting against the circumferential edges of the first positioning posts and the second positioning posts. The pneumatic tool for disassembling the fuel injector as described in claim 7 further includes a plurality of locking parts, which sequentially extend through the second fixing part, the through hole and the first fixing part and are locked in the The second connecting end of the connecting piece. The pneumatic tool for removing the fuel injector as described in claim 8, wherein the holding member is vertically connected to the connecting member. The pneumatic tool for disassembling the fuel injector as described in claim 1, further comprising a spacer ring disposed between the first fixing part and the second fixing part and sleeved on the periphery of the intermediate part. The spacer ring The height of the ring is greater than the height of the middleware.

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