TWI695762B - Dust removal and installation tools - Google Patents

Abstract

The invention discloses a tool for removing and installing a dust cover, which includes a hand-held body, a piston cup, plural expansion rods, and a cover. Wherein, the opposite end of the handheld body has an intake channel and an accommodating groove respectively. The piston cup is slidably accommodated in the accommodating groove, and has a vent hole for a vent valve. Each expansion rod is pivotally arranged at the notch of the accommodating groove, and one end is in contact with the piston cup. The cover is coupled to the notch of the accommodating groove, and has a pushing piece matching the air relief valve toward the lower end. By the composition of the above components, when the piston cup is pushed up by the high-pressure gas and moves up, each expansion rod is expanded simultaneously and when the piston cup rises to a preset height, the pushing piece presses against the vent valve to form a vent, which automatically maintains the expansion The pole is in the most expanded state.

Description

Dust removal and installation tools

The invention relates to a technical field related to vehicle maintenance tools, in particular to a dust cover removal and installation tool.

According to the end of the automobile drive shaft, a dust cover will be set to protect the connection. However, the disassembly and assembly of the dust cover needs to be achieved through a "dust cover disassembly tool". The main technology of this tool is to use high-pressure air to push the piston in the body, so that the piston pushes the expansion rod upward to open the dust cover.

For the specific structure, refer to Taiwan Patent No. I330580 (hereinafter referred to as Document 1). The expansion rod of the aforementioned document 1 is expanded or collapsed by the push of the piston stroke, but the opening degree of the deployment is completely controlled by the user. Once the user does not pay attention, it may cause the opening degree to be too large and damage the dust cover, or the drive shaft Touching, or even causing scratch damage.

For this reason, some companies have provided an opening warning structure as a solution to the teaching plan, such as Taiwan Patent No. I554357 (hereinafter referred to as Document 2). The technical feature of Reference 2 is that when the piston pushes the expansion rod, the expansion rod will collide with the prompt structure on the piston and emit a sound when a certain height is reached, prompting the user to stop the input of high-pressure air to maintain the expansion of the expansion rod degree.

Although Document 2 has a prompt structure, it is still necessary for users to judge and control by themselves, and it is still unknown whether the sound of the prompt structure can be heard accurately in a noisy maintenance environment.

For this reason, how to automatically achieve pressure relief during operation to avoid the lack of overexpansion of the expansion rod is really necessary for its improvement and overcoming.

In view of the above-mentioned problems and deficiencies of the prior art, the main purpose of the present invention is to provide a dust cover removal and installation tool. Through the design of the structure, the expected purpose of automatic pressure relief can be achieved and the above-mentioned deficiencies of the prior art can be solved.

According to the above object of the present invention, the present invention provides a dust cover removal and installation tool, which includes a hand-held body, a piston cup, a plurality of expansion rods, and a cover. Wherein, the opposite end of the handheld body has an intake channel and an accommodating groove respectively. The piston cup is slidably accommodated in the accommodating groove, and has a vent hole for a vent valve. Each expansion rod is pivotally arranged at the notch of the accommodating groove, and one end is in contact with the piston cup. The cover is coupled to the notch of the accommodating groove, and has a pushing piece matching the air relief valve toward the lower end. By the composition of the above components, when the piston cup is pushed up by the high-pressure gas and moves up, each expansion rod is expanded simultaneously and when the piston cup rises to a preset height, the pushing piece presses against the vent valve to form a vent, which automatically maintains the expansion The pole is in the most expanded state.

11‧‧‧Handheld body

111‧‧‧ Grip

112‧‧‧Carrying Department

113‧‧‧ Inlet

114‧‧‧Accommodation slot

115‧‧‧Blowhole

116‧‧‧ First Airway

117‧‧‧ Second Airway

118‧‧‧Slot

119‧‧‧Lower pivot slot

1142‧‧‧accommodation groove large diameter section

1144‧‧‧accommodation groove small diameter section

1152‧‧‧Big diameter section

1156‧‧‧Locating spiral groove

1154‧‧‧ Small diameter section

12‧‧‧Small diameter airtight components

122‧‧‧Airtight ring

124‧‧‧ Bush

126‧‧‧Inner cover

13‧‧‧ Piston Cup

131‧‧‧ Cup figure

132‧‧‧ Cup mouth section

133‧‧‧ vent hole

134‧‧‧Bleed valve

135‧‧‧Airtight ring

1341‧‧‧ Upper limit film

1342‧‧‧Lower limit film

1343‧‧‧Neckdown

1344‧‧‧Concession slot

14‧‧‧Expansion rod

141‧‧‧Open and close

142‧‧‧ conflicting end

143‧‧‧Pivot Department

15‧‧‧ lid

151‧‧‧Face

152‧‧‧Upper slot

153‧‧‧Up pivot connection slot

154‧‧‧Extended column

155‧‧‧Pushing pieces

155’‧‧‧Pushing pieces

16‧‧‧First elastomer

20‧‧‧Gas control mechanism

21‧‧‧ trigger

22‧‧‧Gas collection

221‧‧‧Stem through hole

222‧‧‧Connecting hole

223‧‧‧Positioning rib

2212‧‧‧ Large diameter section of through hole

2214‧‧‧Through hole small diameter section

23‧‧‧Adjusting sleeve

231‧‧‧Socket socket

232‧‧‧Rotary part

24‧‧‧hole cover

242‧‧‧Shaft hole

25‧‧‧Stem

251‧‧‧Stem body

252‧‧‧Stem head

253‧‧‧Valve airway

254‧‧‧Airtight ring

26‧‧‧Second elastomer

27: Turntable

Figure 1 is a perspective schematic view of an embodiment of the present invention.

Figure 2 is another schematic view of the embodiment shown in Figure 1.

Fig. 3 is a schematic partial cross-sectional view (1) of an embodiment of the present invention.

Fig. 4 is a schematic partial cross-sectional view (2) of an embodiment of the present invention.

Figure 5 is an exploded view of the embodiment shown in Figure 1.

Figure 6 is an exploded schematic view of partial components of the embodiment shown in Figure 5 (1).

Figure 7 is an exploded schematic view of the partial components of the embodiment shown in Figure 5 (2).

Figure 8 is an exploded schematic view of partial components of the embodiment shown in Figure 5 (3).

Fig. 9 is an exploded schematic view of partial components of the embodiment shown in Fig. 5 (four).

Figure 10 is a schematic diagram of some components of the embodiment shown in Figure 5.

Figure 11 is a schematic diagram of another embodiment of the embodiment shown in Figure 10.

Figure 12 is a schematic cross-sectional view of another embodiment of the embodiment shown in Figure 5.

Figure 13 is a partial schematic view of the embodiment shown in Figure 4.

Figure 14 is an exploded view of the partial components of the embodiment shown in Figure 13.

Figure 15 is a schematic diagram of the operation of the embodiment shown in Figure 4 (1).

Figure 16 is a schematic diagram of the operation of the embodiment shown in Figure 4 (2).

Figure 17 is a schematic diagram of the operation of the embodiment shown in Figure 3.

Figure 18 is a schematic diagram of the partial operation of the embodiment shown in Figure 17.

Fig. 19 is a schematic diagram of partial operation of the embodiment shown in Fig. 13 (1).

Figure 20 is a partial schematic diagram (2) of the embodiment shown in Figure 13.

In the following, please refer to the related drawings for further description of the embodiment of the dust jacket removal and installation tool of the present invention.

Please refer to FIGS. 1 to 4, the dust cover removal and installation tool of the present invention includes a hand-held body 11, a small-diameter airtight assembly 12, a piston cup 13, a plurality of expansion rods 14, a cover 15, a The first elastic body 16 and a gas control mechanism 20.

For the above-mentioned handheld body 11, please refer to Figures 1 to 7 as shown, with A grip part 111, a carrying part 112, an air inlet 113, a receiving groove 114, an air adjustment hole 115, a first air adjustment channel 116, a second air adjustment channel 117, a plurality of lower cut grooves 118 and a plurality of lower Pivot connection groove 119.

The grip portion 111 and the bearing portion 112 are respectively formed on opposite ends of the handheld body 11.

The air inlet 113 and the accommodating groove 114, as shown in FIGS. 3 to 6, are respectively formed inside the grip part 111 and the bearing part 112, and communicate with each other and communicate with the outside of the handheld body 11 respectively; In the groove 114, the upper and lower sections have a large-diameter section 1142 and a small-diameter section 1144 of the containing groove with different diameters. The aforementioned air inlet 113 provides an external air supply (previous technique, not shown) connection to transmit a high-pressure gas provided by the air supply.

The air adjustment hole 115, as shown in FIGS. 4 to 6, is formed through the grip portion 111 laterally and is a one-step through hole; wherein, the large diameter section 1152 of the air adjustment hole is accommodated by the first air adjustment channel 116 The groove 114 communicates, and the class end face connected to the small diameter section 1154 of the gas regulating hole has a positioning spiral groove 1156. The small diameter section 1154 of the air adjustment hole communicates with the air inlet 113 through the second air adjustment passage 117. During implementation, the air adjustment holes 115 and the first and second air adjustment channels 116 and 117 can be omitted, so that the air inlet 113 directly communicates with the accommodating groove 114.

As for the lower grooves 118, as shown in FIG. 7, the recesses are formed on the cross section of the carrying portion 112 away from the grip portion 111, and are arranged at equal intervals.

The lower pivoting grooves 119, as shown in FIG. 7, are respectively matched to the two sides of the lower grooves 118, and recesses are formed in the cross-section of the bearing portion 112.

The above-mentioned small-diameter airtight assembly 12, as shown in FIGS. 3, 5, and 7, is accommodated in the accommodating groove 114, and includes an airtight ring 122, a bushing 124, and an inner cover 126. The aforementioned airtight ring 122 is disposed at the bottom of the groove of the small-diameter section 1144 of the receiving groove. The aforementioned bush 124 is accommodated in the small-diameter section 1144 of the accommodating groove and pressed against the airtight ring 122. The aforementioned inner cover 126 is pressed against the top of the bush 124 and is locked on the bottom of the groove 1142 of the accommodating groove.

The above-mentioned piston cup 13, as shown in Figs. 3, 5, and 8, is slidably accommodated in the accommodating groove 114, which is displaced relative to the hand-held body 11 by the introduction of high-pressure air, and the overall outline is slightly opened upward The wide-mouth cup has a cup body 131, a cup mouth section 132, a vent hole 133, a vent valve 134, and a gas-tight ring 135.

The cup body section 131 and the cup mouth section 132 are respectively formed on opposite ends of the piston cup 13. Wherein, the inner wall of the cup opening section 132 has a slanted ring surface (increasing from the bottom of the cup opening section 132 upward and outward). In addition, the cup body 131 is provided with a cup ring groove 1312 on the outer peripheral side, which provides the accommodation of the airtight ring 135, and optionally abuts the inner ring side of the bush 124 of the small diameter airtight assembly 12, so as to be accommodated with the hand-held body 11 The lower section of the slot 114 collectively defines a closed air chamber. During implementation, the airtight ring 135 can directly abut the inner wall of the small-diameter section 1144 of the holding groove of the handheld body 11, and the implementation of the small-diameter airtight component 12 is omitted.

The vent hole 133 is formed through the top and bottom of the piston cup 13.

The vent valve 134, as shown in Figures 3, 5, and 8, is an elastic body movable through the vent hole 133, which selectively opens and closes the cross section of the vent hole 133, which has an upper limit A piece 1341, a lower limiting piece 1342, a necked down section 1343, and a concession groove 1344.

The upper and lower limit plates 1341 and 1342 are respectively formed on opposite ends of the vent valve 134 and are larger than the diameter of the vent hole 133.

The aforementioned necking section 1343 is slightly smaller than the diameter of the vent hole 133 and the upper and lower limit plates 1341 and 1342 are respectively connected at both ends. The overall length of the necking section 1343 is slightly longer than the depth of the vent hole 133.

The aforementioned concession groove 1344 is a recess formed at the top of the vent valve 134 surface.

For each of the above expansion rods 14, please refer to the figures 1 to 3, 5, and 9, as shown in the figure, they are matched to extend through the lower slots 118 and are pivotally connected with the lower pivoting slots 119, and have an opening and closing end 141 and an abutting end 142, and a pivoting portion 143 located between the two; the pivoting portion 143 is composed of two pivoting shafts, and the corresponding lower pivoting grooves 19 are accommodated correspondingly. The contact end 142 of each expansion rod 14 is in contact with the cup opening section 132 (oblique ring surface) of the piston cup 13 respectively, so that during the upward and downward movement of the piston cup 13 along the accommodating groove 114, the expansion rods 14 are simultaneously synchronized By swinging, the opening and closing ends 141 of the expansion rods 14 are closed or expanded.

The above-mentioned cover 15, as shown in Figs. 1, 3, 5, 9 to 12, is locked to the cut end of the carrying portion 112 of the hand-held body 11 and closes the cross section of the open end of the accommodating groove 114 to restrain and provide each Expansion rod 14 movable space. The cover 15 has a cover surface 151, a plurality of upper slits 152, a plurality of upper pivotal grooves 153, an extension post 154, and a pushing member 155.

Each of the upper slots 152 matches the lower slot 118 of the handheld body 11 and is formed on the cover surface 151, and cooperates with the lower slot 118 to provide space for the expansion rod 14 to move.

The upper pivoting grooves 153 match the lower pivoting grooves 119 of the handheld body 11 and are formed on the lower end surface of the cover surface 151, and cooperate with the lower pivoting grooves 119 to pivotally connect the pivoting portions 143 (two pivoting shafts) of the expansion rod 14 ).

The extension post 154 extends downward from the end surface 151 of the cover to form a predetermined profile. In practice, the extension post 154 has a tool slot 1542 that is open upward.

The pushing member 155 is matched with the bleed valve 134 and can be adjusted and locked on the bottom end of the extension post 154. In practice, the pushing member 155 may be a bolt, which cooperates with the screw hole 1544 extending through the extension post 154 to adjust the distance that the bolt protrudes from the extension post. In addition, The pushing member 155' can also be formed integrally with the extension post 154 (please refer to FIG. 12).

For the above first elastic body 16, please refer to FIGS. 3, 5, and 9, as shown in FIG. The expansion rods 14 are held against each other to keep the opening and closing ends 141 normally closed.

For the above air control mechanism 20, please refer to Figures 1 to 7, 13 to 14, as shown in the figure, it is provided through the air regulating hole 115 to adjust or open or close the volume of high-pressure air entering through the inlet flow 113 into the accommodating groove 114 . The gas control mechanism 20 includes a trigger 21, a gas collecting sleeve 22, a gas adjusting sleeve 23, a hole cover 24, a valve stem 25, a second elastic body 26, and a rotary disk 27.

The trigger 21 is matched with a predetermined end of the gas regulating hole 115 and pivotally connected to the outer peripheral side of the bearing portion 112.

The gas collecting sleeve 22 is accommodated in the large diameter section 1152 of the gas regulating hole, and has a valve stem through hole 221, a communication hole 222, and a positioning rib 223. The aforementioned valve stem through hole 221 is formed to penetrate in the extending direction of the gas collecting sleeve 22 and has large and small diameter sections 2212 and 2214. The aforementioned communication hole 222 is formed through one side of the gas collecting sleeve 22 and matches the first air channel 116. The positioning ribs 223 are protrudingly provided on the predetermined end surface of the extending direction of the gas collecting sleeve 22, and match with the positioning spiral groove 116 of the gas adjusting hole 115, so that the gas collecting sleeve 22 can be positioned in the gas adjusting hole 115 to position the communication hole 222 and 116 position of the first airway.

The gas adjusting sleeve 23 has a set of connecting grooves 231 and a rotating rod portion 232 at opposite ends thereof, wherein the gas adjusting sleeve 23 is inserted into the gas collecting sleeve 22 with the end of the sleeve connecting groove 231 and closes the gas collecting sleeve 22 Open end section in this direction.

The hole cover 24 is locked to the grip portion 111 at the end of the large aperture 1152 of the air adjustment hole to close the cross section of the open end of the large aperture 1152 of the air adjustment hole. Aforementioned hole The cover 24 has a shaft hole 242 formed therethrough to provide the extension of the rotating rod portion 232 of the gas adjusting sleeve 23 to facilitate rotation of the user.

The valve stem 25 has a valve stem body 251, a valve stem head 252, at least one valve air passage 253, and a plurality of airtight rings 254.

The valve stem body 251 and the valve stem head 252 are formed at opposite ends of the valve stem 25, respectively, and the valve stem body 251 extends through the small diameter section 2214 of the gas regulating hole and protrudes to the outer peripheral side of the grip portion 111 corresponding to the trigger 21, and The valve stem head 252 is accommodated in the large-diameter section 2212 of the through hole of the gas collecting sleeve 22 and is in synchronism with the sleeve connecting groove 231 of the gas adjusting sleeve 23.

The aforementioned valve air passage 253 is formed symmetrically and recessed around the outer surface of the valve stem 251, and selectively matches the position of the second air passage 117 when the valve stem 251 is moved by the trigger 21. Wherein, each valve air passage 253 has a diameter width and depth ranging from small to large along the extending direction.

The aforementioned airtight rings 254 are sleeved on the predetermined position of the valve stem 251.

The second elastic body 26 is accommodated in the sleeve groove 231 of the gas adjusting sleeve 23, and the two ends are respectively pushed against the stem head 252 of the valve stem 25 and the groove bottom of the sleeve groove 231, so as to make the valve stem in a normal state The valve air passage 253 is misaligned with the second air passage 117.

The rotating disk 27 is sleeved on the rotating rod portion 232 of the gas adjusting sleeve 23 to facilitate the user to rotate the gas adjusting sleeve 23.

Therefore, the above is an introduction to the components and assembly methods of a preferred embodiment of the dust cover removal and installation tool provided by the present invention, and the operating characteristics of the embodiment of the present invention are described below.

First, please refer to Figures 1 to 6, as shown, the dust cover (not shown) is attached to the opening and closing end 141 of each expansion rod 14, and the grip 111 and an air supply unit (not shown) A high-pressure gas is introduced into the air inlet 113 of the handheld body 11.

Normally, the valve stem 25 of the gas control mechanism 20 is caused by the second elastic body 26 The force causes the valve air passage 253 on the valve stem 25 to be misaligned with the second air adjustment passage 117 (intake passage 113) of the handheld body 11, so that the high-pressure gas in the intake passage 113 cannot enter the accommodating groove 114.

As shown in FIGS. 15 to 17, the user can depress the trigger 21 to push the valve stem 25 to displace and compress the second elastic body 26, so that the valve air passage 253 of the valve stem 25 and the second air passage of the hand-held body 11 117 pairs are connected.

The high-pressure gas moves from the second air passage 117 along the gap between the valve air passage 253, the valve stem 25 and the hole wall of the air adjustment hole 115, enters the valve stem through hole 221 of the gas collection sleeve 22, and then enters along the communication hole 222 and the first air adjustment passage 116 The accommodating groove 114 pushes the piston cup 13 up, so that the displacement of the piston cup 13 rises. At this time, the vent valve 134 is also pushed up by the high-pressure gas, so that the lower limiting piece 1342 is pressed against the bottom end surface of the piston cup 13 and the vent hole 133 is closed.

During the ascending movement of the piston cup 13, the inclined ring surface of the cup mouth section 132 simultaneously pushes against the abutting end 142 of each expansion rod 14, so that each expansion rod 14 swings about the pivot 143 as an axis, allowing each expansion rod 14 to open The closed end 141 is in an expanded state to expand the dust cover (not shown).

In order to avoid the expansion opening of each expansion rod 14 being too large, please refer to Figures 17 and 18, when the piston cup 13 is pushed up to a preset height by high-pressure gas, its bleed valve 134 will be pushed by the bottom end of the cover 15 The member 155 pushes down and allows the high-pressure gas below the outside of the piston cup 13 (cup body section 131) to enter the inside of the piston cup 13 through the vent hole 133 to form a pressure relief, thereby avoiding excessive expansion of the expansion rods 14.

Please refer to the figures 13, 14, 19 to 20, for the convenience of the user to control the high-pressure gas entering the accommodating tank 114, the gas sleeve 23 and the valve stem 25 can be synchronized by twisting the rotary disk 27 to let the valve The valve air passage 253 on the rod 25 is displaced so that the width and depth of different diameters correspond to the second air passage 117 to adjust the intake amount of high-pressure gas.

The above descriptions are only preferred embodiments of the present invention, and are intended to clarify the features of the present invention, not to limit the scope of the embodiments of the present invention, and the average changes made by those skilled in the art according to the present invention , As well as changes well known to those skilled in the art, should still fall within the scope of the present invention.

11‧‧‧Handheld body

111‧‧‧ Grip

112‧‧‧Carrying Department

118‧‧‧Slot

14‧‧‧Expansion rod

15‧‧‧ lid

20‧‧‧Gas control mechanism

Claims (9)

A dust cover removal and installation tool, which includes: a hand-held body, one end has an air inlet for inputting a high-pressure air, and the other end has an accommodating groove communicating with the air inlet, a plurality of along the accommodating groove The lower profile groove is configured, and a plurality of connecting and matching pivotal grooves under each of the lower profile grooves are arranged; a piston cup is slidably accommodated in the containing groove, and an end surface adjacent to the air inlet is provided with a vent valve One vent hole is provided, and the other end which is different from the air inlet has a cup mouth section concavely provided with an oblique ring surface; a plurality of expansion rods are matched to extend each of the lower profile grooves, and have an opening and closing end, A conflicting end, and a pivoting portion located between the opening and closing end and the conflicting end and pivotally connected to each of the lower pivotal connection grooves, wherein the conflicting end is in contact with the cup opening section; and a lid is combined At the opening of the accommodating groove, there are a plurality of upper grooves matching each of the lower profile grooves, a plurality of pivot grooves matching each of the lower pivot grooves, and a matching gas relief valve provided on the downward end surface of the cover Push the pieces. As described in item 1 of the scope of the patent application, the dust cover removal and installation tool, wherein the pushing piece is screwed on the bottom end surface of the cover. As described in item 1 of the scope of the patent application, a dust cover removal and installation tool, wherein a first elastic body is further provided between the cover and each of the expansion rods to normally keep each expansion rod in a closed state. As described in item 1 of the patent application scope, the dust cover removal and installation tool, wherein the outer circumference of the piston cup is further provided with a cup ring groove to provide a gas-tight ring accommodation. As described in item 1 of the scope of the patent application, the dust cover removal and installation tool, wherein the bottom of the accommodating groove is further stacked with an airtight ring, a stack of bushes provided on the airtight ring, and a stack of The inner cover on the bush and locked with the handheld body. As described in item 5 of the patent application scope, the dust cover removal and installation tool, wherein the outer circumference of the piston cup is further provided with a cup body ring groove to provide a gas-tight ring accommodation, and the gas-tight ring is in contact with the inner wall of the bush Pick up. As described in item 1 of the patent application scope, the dust cover removal and installation tool, wherein the hand-held body is further formed with a gas regulating hole, a first gas regulating channel connecting the gas regulating hole and the accommodating groove, and a gas regulating hole It is connected with the second air-conditioning channel of the air inlet, and the air-conditioning hole provides a gas control mechanism to selectively open and close the air inlet and the accommodating groove. As described in item 7 of the patent application scope, the dust cover removal and installation tool, wherein the gas control mechanism includes a trigger, a gas collection sleeve, a gas adjustment sleeve, a hole cover, a valve stem, and a second elastic The trigger is matched with a preset end of the gas regulating hole and pivotally connected to the outer peripheral side of the handheld body; the gas collecting sleeve has a valve stem through hole formed along the extending direction of the gas collecting sleeve and a forming the set On one side of the gas sleeve, the communication hole connecting the valve stem through hole and the first gas regulating passage; the gas regulating sleeve, on opposite ends thereof, respectively have a set of connecting grooves and a rotating rod portion, and the set of connecting grooves are inserted into the valve In the rod through hole; the hole cover is locked at the other end of the gas regulating hole away from the trigger, and has a shaft hole for the rotary rod portion to penetrate; the valve stem has a valve shaft body, a valve stem head, At least one valve airway and plural airtight rings; The valve stem body and the valve stem head respectively form two ends of the valve stem, and the valve stem body protrudes from the gas regulating hole corresponding to the trigger, and the valve stem head is accommodated in the valve stem through hole and The air-regulating sleeve is connected with the same movement; the valve air passage is recessed to form the outer surface of the stem body, and when the valve stem body moves, it is selectively matched with the position of the second air-regulating passage; It is arranged on the outer side of the valve stem; and the second elastic body is accommodated in the sleeve groove, and the two ends are pushed against the valve stem head and the gas adjusting sleeve respectively, so that the valve air passage and the first Second airway misalignment. As described in item 8 of the scope of the patent application, the dust cover removal and installation tool, wherein the gas control mechanism includes a turntable sleeved on the rotary rod portion.

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