TWI554357B - Dust cover expanding tool - Google Patents

Description

Dust cover removal tool

The invention relates to a disassembly tool, in particular to a disassembly tool for a dust jacket of an automobile.

For example, German Patent No. 102008057413 discloses a car boot assembly and disassembly tool. The main feature is that a high-pressure air source is used to push the piston in the body so that the piston pushes up the expansion rod upwards, thereby expanding the dust jacket of the automobile.

However, the aforementioned expansion rod is limited by the stroke of the piston, and the expansion angle thereof cannot be effectively stretched to the maximum, so that in use, the expansion rod easily comes into contact with the transmission shaft, and more often causes scratch damage.

Moreover, the expansion rod of the disassembly tool belongs to the non-segment expansion, and the expansion is not legally located at a specific angle, and the operator is not allowed to expand to the desired angle. Therefore, when replacing the dust jacket, due to the labels The range of the boot can be widened, and for a particular boot, it is prone to over-expansion and rupture.

In order to solve the above problems, the present invention discloses a disassembly and assembly tool for a dust jacket, which uses a top inclined surface of a piston to press an expansion rod to synchronously expand the expansion rod, and the present invention has a limited piston as compared with the conventional structure. Under the stroke, the expansion rod has a large expansion angle so that it will not be scratched when it is touched by the drive shaft during the disassembly and assembly work.

In order to achieve the above object, the present invention provides a dust cover disassembly tool, comprising: a base having an intake pipe at one end and a receiving groove communicating with the intake pipe at the other end; a piston sliding The ground is mounted on the accommodating groove, and an annular top pushing inclined surface is recessed at one end; a plurality of expanding rods are pivotally connected to the opening of the accommodating groove via a buckle, and each expansion rod has a a closing end and an abutting end, the abutting ends are in contact with the pushing inclined surface; and a cover is coupled to the opening of the receiving groove, and the opening and closing ends of the expansion rods are exposed; thereby, when the piston When displaced in the direction of the cover, the push-up ramp presses the abutting ends, thereby causing the expansion rods to pivot, so that the opening and closing ends are unfolded relative to each other.

Preferably, the present invention further includes a prompting structure disposed at an inner end of the pushing slope, and the working pole is perceived by the operator when the expanding rod is in the process of expanding until the opposing end and the prompting structure collide with each other and make a sound Whether the expansion angle meets the working demand, so as to stop or continuously input high-pressure air, to disassemble and disassemble different dust jackets, and effectively avoid the problem of excessively breaking the dust jacket.

Preferably, the prompting structure of the present invention is a plurality of annular protrusions distributed at the inner end of the inner end of the pushing inclined surface and the inner end of the pushing inclined surface.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the embodiments are set forth in proportion to the description and not in the

Referring to FIG. 1 to FIG. 8 , the dust removing and disassembling tool of the present invention comprises a base 10 , a piston 20 , a plurality of expansion rods 30 and a cover 40 .

The base 10 has an intake pipe 11 at one end and a receiving groove 12 communicating with the intake pipe 11 at the other end. The end of the intake pipe 11 is connected with high-pressure air to introduce high-pressure air into the base. Within 10. Further, the intake pipe 11 is laterally provided with a control valve 50 for selectively controlling whether high-pressure air enters the susceptor 10 via the intake pipe 11.

The base 10 is provided with a buckle groove 13 at an edge of the intake pipe 11, and a plurality of first notches 14 are equidistantly distributed. The first notch 14 communicates with the buckle groove 13 and is disposed inside the groove 12 It is opened to the outer periphery of the base 10.

The piston 20 is slidably mounted in the accommodating groove 12, and the piston 20 can be displaced relative to the susceptor 10 by the introduction of high-pressure air. The piston 20 is different from the end edge of the intake pipe 11 with an action groove 21, and the action groove The inner wall ring of 21 is provided with a pushing inclined surface 22 which gradually expands outward from the inside of the working groove 21 toward the opening. Next, the inner end of the pushing ramp 22 is further connected to a bottom wall 23. The inner end of the pushing ramp 22 is provided with a cueing structure 60 which is composed of a plurality of annular projections 61. In the present invention, there are three annular protrusions 61, wherein two annular protrusions 61 are disposed on the pushing inclined surface 22, and the other annular protrusion 61 is disposed on the bottom wall 23 and adjacent to the annular protrusion 61 of the pushing inclined surface 22, as shown in FIG. Shown.

A plurality of expansion rods 30 are made of a metal material. Each of the expansion rods 30 has an opening and closing end 31 and an abutting end 32, and a pivoting portion 33 therebetween. The pivoting portion 33 is curved and disposed opposite to the shape of the abutting end 32. Preferably, the convex portion of the pivoting portion 33 faces the outer side, and the concave portion faces the inner side. The pivoting portion 33 can be inserted through a buckle 34 so as to be installed at the end of the receiving groove 12. Buckle groove 13. In addition, the abutting ends 32 of the expansion rods 30 are in contact with the thrust ramps 22 to control the swinging of the expansion rods 30 during the displacement of the pistons 20. Thereby, the opening and closing ends 31 of the expansion rod 30 are closed or expanded to each other.

The cover 40 is locked to the opening of the accommodating groove 12 by a plurality of bolts 41 and nuts 42 for exposing the opening and closing ends 31 of the expansion rods 30. Preferably, the cover 40 has a plurality of second notches 43 corresponding to the first notches 14 so that the expansion bars 30 are pivotally connected to the first notches 14 and the second notches 43 and The joint 33 is slightly exposed outside the base 10 and the cover 40.

In addition, the present invention further includes an elastic member 70 disposed between the cover 40 and the inner edge of the expansion rod 30 for holding the expansion rods 30 such that the opening and closing ends 31 are normally held in a closed shape. Preferably, the elastic member 70 is a spring, and in order to provide the positioning effect of the elastic member 70, a flange 44 is provided on the inner edge of the cover 40 for setting the elastic member 70.

Next, referring to FIG. 5, FIG. 6, and FIG. 8, when the base 10 is inflated to push the piston 20 to displace the piston 20 toward the cover 40, the pushing slope 22 presses the abutting ends 32, thereby The expansion rods 30 are pivoted at the center of the buckle 34, and are pivotally pivoted relative to the base 10 to expand, so that a dust jacket 100 can be opened for mounting the dust jacket 100 or the drive shaft of the automobile. Remove the dust jacket 100 from the top.

However, the present invention allows the expansion rods 30 to provide the operator with an indication of whether the expansion angle is reached during the expansion process until the abutment ends 32 collide with the annular projections 61 disposed at the inner ends of the thrust ramps 22 and make an audible sound. The work demand, if the demand has been reached, can stop the input of high-pressure air, maintain the expansion degree of the expansion rod 30, and avoid the problem of excessively breaking the dust jacket 100.

As shown in FIG. 7, when the expansion rod 30 continues to expand until the annular protrusions 61 disposed between the bottom end 23 and the thrust slope 22 collide with each other again and make a sound, this is the expansion rod 30. The preset maximum expansion range is for the operator to stop inputting high-pressure air by sensing and judging, and avoid breaking the dust jacket 100.

Therefore, when the operator disassembles the dust jacket 100, when the collision sound is sensed, it is immediately determined whether the expansion degree of the expansion rod 30 is the working range, so that the high-pressure air is stopped from being input into the susceptor 10 at an appropriate time to avoid continued expansion. Break the dust jacket 100.

Moreover, the present invention is capable of compressing the abutment end 32 of the expansion rod 30 by the pushing inclined surface 22 of the piston 20, so that the expansion rod 30 can have a larger expansion angle than the conventional structure under the predetermined stroke of the piston 20. Range to avoid scratching the drive shaft during work.

While the invention has been described in terms of a preferred embodiment, the various embodiments may The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

<TABLE border="1" borderColor="#000000" width="_0002"><TBODY><tr><td> Base 10 accommodating groove 12 First notch 14 Acting groove 21 Bottom wall 23 Opening and closing end 31 Pivot part 33 Cover 40 Nut 42 Flange 44 Cue structure 60 Elastic member 70 </td><td> Intake pipe 11 Buckle groove 13 Piston 20 Pushing ramp 22 Expansion rod 30 Contact end 32 Buckle 34 Bolt 41 Second notch 43 control valve 50 annular protrusion 61 dust jacket 100 </td></tr></TBODY></TABLE>

Fig. 1 is a schematic view showing the appearance of the present invention. [Fig. 2] is a structural decomposition intention of the present invention. Fig. 3 is a structural exploded view of another perspective of the present invention. Fig. 4 is a schematic cross-sectional view showing the present invention. Fig. 5 is a schematic view showing the inflation operation of the present invention, showing that the opening and closing ends of the expansion rod are unfolded relative to each other. Fig. 6 is a partial enlarged view of Fig. 5 showing the contact of the expansion rod with the annular projection on the thrust ramp. Fig. 7 is another partial enlarged view of the present invention showing the contact of the expansion rod with the annular projection on the bottom wall. FIG. 8 is a schematic view showing the appearance of the dust cover of the present invention.

<TABLE border="1" borderColor="#000000" width="_0003"><TBODY><tr><td> Base 10 accommodating slot 12 Piston 20 Pushing ramp 22 Expansion rod 30 Contact end 32 Cover 40 Snail Cap 42 control valve 50 </td><td> intake pipe 11 buckle groove 13 action groove 21 bottom wall 23 opening end 31 buckle 34 bolt 41 flange 44 elastic member 70 </td></tr> /TBODY></TABLE>

Claims (13)

A dust cover disassembly tool includes: a base having an intake pipe at one end for inputting a high-pressure air, and a receiving groove at the other end communicating with the intake pipe; a piston slidingly Mounted in the accommodating groove, and the piston is different from the end edge of the intake pipe, and has an annular slanting inclined surface which is gradually expanded from the inner side to the outer side, wherein the inner end of the pushing inclined surface is disposed a reminder structure; a plurality of expansion rods are pivotally connected to the opening of the accommodating groove via a buckle, and each of the expansion rods has an opening end and an abutting end, and the abutting ends are The jacking bevel contact; and a cover coupled to the opening of the receiving slot and for exposing the opening and closing ends of the expansion rods; thereby, the pushing slope is when the piston is displaced toward the cover The opposing ends are pressed, and the expansion rods are pivoted until the collision ends collide with the prompting structure and sound, thereby stopping the input of the high-pressure air to maintain the expansion of the expansion rod. The detachable tool of the dust jacket of claim 1, wherein a pivoting portion is formed between the opening and closing end of each of the expansion rods and the abutting end for the buckle to be pivoted Connected to the opening of the receiving slot, the shape of the abutting end is opposite to the pivoting portion. The detachable tool of the dust jacket of claim 1, wherein the inner end of the pushing slope is connected to a bottom wall, and the prompting structure is a plurality of annular protrusions distributed in the bottom wall and the pushing slope end. The detachable tool of the dust jacket of claim 3, wherein the annular protrusions are at least one disposed on the bottom wall. The detachable tool of the dust jacket of claim 1, wherein the open end ring of the accommodating groove is provided with a buckle groove for receiving the buckle. The detachable tool of the dust jacket of claim 1, wherein an elastic member is disposed between the cover and the expansion rods for holding the expansion rods to maintain the normal state in a closed state. The dust removal sleeve dismounting tool of claim 1, wherein the intake pipe is provided with a control valve. A dust cover disassembly tool includes: a base having an intake pipe at one end for inputting a high-pressure air, and a receiving groove at the other end communicating with the intake pipe; a piston slidingly The piston is mounted on the accommodating groove, and the piston is concavely disposed with an action groove different from the end edge of the air inlet pipe. The inner wall ring of the action groove is provided with a pushing inclined surface and a prompting structure is disposed at the inner end of the pushing inclined surface. The jacking ramp is gradually expanded outward from the inside of the action slot toward the opening; a plurality of expansion rods are synchronously pivotally disposed at the opening of the receiving slot, and each of the expansion rods has an opening and closing end And a contact end, the contact end is in contact with the push ramp; and a cover is coupled to the opening of the receiving slot and is exposed for the opening and closing ends of the expansion rod; thereby, when the piston When the displacement is in the direction of the cover, the pushing slope compresses the abutting ends, thereby causing the expansion rods to pivot and expand until the collision ends collide with the prompting structure and make a sound, thereby stopping the input. The high pressure air to keep the expansion rod Degree of expansion. The detachable tool of the dust jacket of claim 8, wherein a pivoting portion is formed between the opening and closing end of each of the expansion rods and the abutting end, and the pivoting portions are transmitted through a buckle The ring is pivotally connected to the opening of the receiving slot, and the shape of the abutting end is opposite to the pivoting portion. The detachable tool of the dust jacket of claim 8, wherein the inner end of the pushing slope is connected to a bottom wall, and the prompting structure is a plurality of annular protrusions distributed in the bottom wall and the pushing slope end. The detachable tool of the dust jacket of claim 10, wherein the annular projections are at least one of the bottom walls. The detachable tool of the dust jacket of claim 9, wherein the open end ring of the accommodating groove is provided with a buckle groove for receiving the buckle. The detachable tool of the dust jacket of claim 8, wherein an elastic member is disposed between the cover and the expansion rods for holding the expansion rods to maintain the normal state in a closed state.