Removal jig

Abstract

To provide a technology for easily taking out a gasket disposed in a groove formed in an end face of a piping component.SOLUTION: A takeout jig includes: a holder fixed to a piping component; a block supported by the holder; a pick supported by the block; a lock mechanism which locks sliding of the block with respect to the holder; and an operation lever supported by the block. A cam mechanism which interlocks the pick and the lock mechanism with each other in accordance with rotation of the operation lever is provided at a basal end of the operation lever. In a first state in an initial position, the lock mechanism locks sliding of the block with respect to the holder, and a tip of the pick is disposed to face a groove. In a second state in which the operation lever is operated in a specific direction from the first state, the pick is pushed out by the cam mechanism, and the lock by the lock mechanism is released. In a third state in which the operation lever is further operated in a specific direction from the second state, the block slides with respect to the holder.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present specification discloses an extraction tool for extracting a gasket disposed within a groove formed in an end face of a piping component. [Background technology]

[0002] Patent Document 1 describes a tool that slightly widens the gap between a pair of pipe flanges through which cooling water flows, and removes rubber packing between the pipe flanges. The tool includes a tongue and a handle. Rotating the handle causes the tongue to enter the gap between the pair of pipe flanges, and the tongue pushes the rubber packing outward from between the pair of pipe flanges. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 03-077895 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, a gasket may be placed in a groove formed on an end surface of a piping component. If the gasket is tightly fitted in the groove, it can be difficult to remove the gasket. This specification provides a technique for easily removing a gasket placed in a groove formed on an end surface of a piping component. [Means for solving the problem]

[0005] This specification discloses a removal tool for removing a gasket placed in a groove formed on an end face of a piping part, the removal tool including a holder fixed to the piping part, a block slidably supported by the holder, a pick slidably supported by the block, a locking mechanism for locking and unlocking the sliding of the block relative to the holder, and an operating lever rotatably supported by the block, the base end of the operating lever being provided with a cam mechanism for interlocking the pick and the locking mechanism in response to rotation of the operating lever, and the holder is attached to the piping part, and the block, the pick, and the operating lever are in their initial positions. In a first state in which the operating lever is positioned, the locking mechanism locks the sliding of the block relative to the holder, and the tip of the pick is positioned facing the groove. In a second state in which the operating lever is operated in a specific direction from the first state, the cam mechanism pushes the pick out and inserts it into the groove, and the lock by the locking mechanism is released. In a third state in which the operating lever is further operated in the specific direction from the second state, the block slides relative to the holder, and the pick supported by the block removes the gasket from the groove.

[0006] According to the above configuration, after the holder of the removal jig is attached to the piping part, the gasket can be removed from the groove simply by operating the operating lever in a specific direction from the initial position. The gasket placed in the groove formed in the end face of the piping part can be easily removed.

[0007] Details and further improvements of the technology disclosed in this specification are described in the following "Description of Embodiments of the Invention." [Brief explanation of the drawings]

[0008] [Figure 1] FIG. [Figure 2] 10A and 10B are diagrams illustrating the operation of the removal jig. [Figure 3]10A and 10B are diagrams illustrating the operation of the removal jig. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Configuration of removal jig 2; Figure 1) The removal jig 2 is a jig for removing a gasket 110 disposed in a groove 104 formed in an end face 102 of a piping part 100. The piping part 100 is, for example, a turbocharger for an automobile. A catalyst pipe that communicates with a three-way catalyst is connected to the end face 102. When replacing the three-way catalyst, the connection between the end face 102 and the catalyst pipe is released. At this time, the gasket 110 is also replaced. However, the gasket 110 expands due to the heat of the exhaust gas flowing through the piping part 100 and may become stuck to the inner surface of the groove 104. It is difficult to remove the stuck gasket 110 from the groove 104. The removal jig 2 was developed to address this problem.

[0010] The removal jig 2 includes a holder 10, a block 20, a pick 30, a locking mechanism 40, and an operating lever 50. The holder 10 has a clamp 12. The clamp 12 clamps the piping component 100 from an end surface 102 of the piping component 100, thereby fixing the holder 10 to the piping component 100.

[0011] The block 20 is slidably supported by the holder 10. Specifically, an end 22 of the block 20 is housed within the holder 10. Pins 24 protruding from both sides of the end 22 are inserted into slot holes 14 formed in the holder 10. The slot holes 14 are arc-shaped. The pins 24 slide within the slot holes 14, causing the block 20 to slide relative to the holder 10.

[0012] The pick 30 is slidably supported by the block 20. Specifically, the pick 30 is housed in the block 20. A tip 32 of the pick 30 protrudes outward from the end 22 of the block 20. The pick 30 is slidable along its longitudinal direction.

[0013] The locking mechanism 40 locks and unlocks the sliding of the block 20 relative to the holder 10. The locking mechanism 40 is fixed to the underside of the block 20. The locking mechanism 40 has a locking pin 42 that protrudes toward the holder 10. The locking pin 42 is inserted into a locking hole 16 formed in the side of the holder 10, thereby locking the sliding of the block 20 relative to the holder 10. The locking mechanism 40 also has a button 44. When the button 44 is pressed down, the locking pin 42 retracts into the locking mechanism 40. This removes the locking pin 42 from the locking hole 16, unlocking the sliding of the block 20 relative to the holder 10. For example, the locking pin 42 operates by utilizing the restoring force of an elastic member such as a spring.

[0014] The operating lever 50 is a long lever operated by an operator. The operator grips one end of the operating lever 50. Meanwhile, the other end of the operating lever 50, that is, a base end 52, is rotatably supported by the block 20. A cam mechanism 54 that forms a predetermined curve is provided at the base end 52. The end of the pick 30 opposite the tip 32 abuts against the cam mechanism 54. The cam mechanism 54 converts the rotational movement of the base end 52 into linear movement of the pick 30. The cam mechanism 54 also faces the button 44 of the locking mechanism 40. When the base end 52 rotates, the cam mechanism 54 presses down the button 44 of the locking mechanism 40.

[0015] (Operation of removal jig 2; Figures 2 and 3) The operation of the removal jig 2 will be described with reference to Figures 2 and 3. State (1) in Figure 2 shows the initial state in which the holder 10 is attached to the piping part 100 and the block 20, pick 30, and operating lever 50 are in their initial positions. In the initial state, the locking mechanism 40 locks the block 20 from sliding relative to the holder 10. The tip 32 of the pick 30 faces the boundary between the gasket 110 and the groove 104 of the piping part 100.

[0016] 2 shows a state in which the operating lever 50 is operated in a specific direction from the state (1). When the operating lever 50 is operated in the specific direction to the position of the state (2), the cam mechanism 54 pushes the pick 30 closer to the gasket 110.

[0017] State (3) in Figure 2 represents a state in which the operating lever 50 has been further operated in a specific direction from state (2). When the operating lever 50 is operated to the position of state (3), the tip 32 of the pick 30 is inserted into the boundary between the gasket 110 and the groove 104. Furthermore, in state (3), the cam mechanism 54 presses down the button 44 of the locking mechanism 40. This releases the lock provided by the locking mechanism 40 (i.e., unlocks the sliding of the block 20).

[0018] State (4) in FIG. 3 represents a state in which the operating lever 50 is further operated in a specific direction from state (3). As the block 20 slides relative to the holder 10, the tip 32, inserted into the boundary between the gasket 110 and the groove 104, peels the gasket 110 from the groove 104. Then, as shown in state (5) in FIG. 3 , when the operating lever 50 is further operated in a specific direction from state (4), the tip 32 removes the gasket 110 from the groove 104. With this configuration, after the holder 10 of the removal jig 2 is attached to the piping component 100, the gasket 110 can be removed from the groove 104 simply by operating the operating lever 50 in a specific direction from the initial position shown in state (1) in FIG. 2 . The gasket 110 placed in the groove 104 formed in the end face 102 of the piping component 100 can be easily removed.

[0019] (Correspondence) The piping part 100 and the removal jig 2 are examples of a "piping part" and a "removal jig," respectively. The end face 102, the groove 104, and the gasket 110 are examples of an "end face," a "groove," and a "gasket," respectively. The holder 10 and the block 20 are examples of a "holder" and a "block," respectively. The pick 30 and the tip 32 are examples of a "pick" and a "tip," respectively. The locking mechanism 40 is an example of a "locking mechanism." The operating lever 50, the base end 52, and the cam mechanism 54 are examples of an "operating lever," a "base end," and a "cam mechanism," respectively. State (1) in Figure 2, state (3) in Figure 2, and state (5) in Figure 3 are examples of a "first state," a "second state," and a "third state," respectively. [Explanation of symbols]

[0020] 2: Removal jig, 10: Holder, 12: Clamp, 14: Slot hole, 16: Lock hole, 20: Block, 22: End, 24: Pin, 30: Pick, 32: Tip, 40: Lock mechanism, 42: Lock pin, 44: Button, 50: Operating lever, 52: Base end, 54: Cam mechanism, 100: Piping part, 102: End face, 104: Groove, 110: Gasket

Claims

[Claim 1] A removal tool for removing a gasket disposed in a groove formed in an end surface of a piping component, a holder fixed to the piping component; a block slidably supported by the holder; a pick slidably supported by the block; a locking mechanism that locks and unlocks the sliding of the block relative to the holder; an operating lever rotatably supported by the block; Equipped with a cam mechanism is provided at a base end of the operating lever to interlock the pick and the locking mechanism in response to rotation of the operating lever; In a first state in which the holder is attached to the piping part and the block, the pick, and the operating lever are in their initial positions, the locking mechanism locks the block from sliding relative to the holder, and the tip of the pick is positioned to face the groove, In a second state in which the operating lever is operated in a specific direction from the first state, the cam mechanism pushes out the pick and inserts it into the groove, and the locking mechanism is released, In a third state in which the operating lever is further operated in the specific direction from the second state, the block slides relative to the holder, causing the pick supported by the block to remove the gasket from the groove. Removal jig.

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