Removal tool

Abstract

To improve workability of drawing work by a drawing tool.SOLUTION: A drawing tool 1 draws out a second member 90 fitting in a first member 80 in a predetermined drawing direction Z to separate the second member from the first member. The drawing tool includes: an engagement claw support 10 including engagement claws 11a which are engaged with the second member; and a guide 20 which has end surfaces 20c, which are engaged with the first member and provided in a direction opposite to the drawing direction, and guides the engagement claw support along the drawing direction and the opposite direction of the drawing direction. Further, in the drawing tool, a gripper G, which may apply a drawing force for moving the engagement claw support in the drawing direction relative to the guide and drawing the first member by being gripped, is formed at the engagement claw support and the guide.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an extraction tool. [Background technology]

[0002] Patent Documents 1-3 describe an extraction tool that separates two members (first and second members) that fit together. Patent Documents 1-3 also describe an extraction tool that pulls out a second member that fits into a first member in a predetermined pulling direction to separate the second member from the first member. In these documents, the first member is a member having a cylindrical inner peripheral surface such as a hole, and the second member is a cylindrical member. The second member that fits inside the first member is then pulled out. To this end, the extraction tool described in Patent Documents 1-3 performs the extraction process by moving a component that includes a locking claw that is locked to the second member relative to a component that has an end face that is locked to the first member in the opposite direction to the pulling direction, using a screw mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 53-88000 [Patent Document 2] Japanese Utility Model Application Publication No. 61-143717 [Patent Document 3] JP 2015-208792 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the extraction tool that performs the extraction process using the above-mentioned conventional screw mechanism, the extraction operation requires labor and time.

[0005] The present invention has been made in consideration of the above problems in the prior art, and an object of the present invention is to improve the workability of the extraction operation using a extraction tool. [Means for solving the problem]

[0006] One aspect of the present invention for solving the above problems is a first member Hole Mating to The cylindrical member has a pair of through holes at opposing positions that connect the inside and the outside of the member. A removal tool for removing the second member from the first member in a predetermined removal direction, A locking claw support body including a locking claw that is locked to the second member; a guide having an end surface in an opposite direction to the pulling-out direction that is engaged with the first member, and guiding the locking claw support body along the pulling-out direction and a direction opposite to the pulling-out direction. 、 The locking claw support member has a hook portion, a claw movement guide shaft member, and a movable frame, The claw movement guide shaft member is supported at both ends by the movable frame, The hook portion includes two hooks each having the locking claws that protrude outward in opposite directions, and each hook portion has the locking claw at one end and a slide guide hole at the other end, the claw movement guide shaft member is disposed perpendicular to the pulling direction, and is inserted into the slide guide hole to slidably hold the hook portion; The two hook portions are both held by one of the claw movement guide shaft members and are held movably along the claw movement guide shaft member until they approach each other and come into contact with each other, The movable frame and the guide each have a gate-shaped structure having a pair of legs at both ends extending in the removal direction, The movable frame is arranged to be housed in the gate-shaped structure of the guide so that the inner surfaces of the pair of legs of the guide face the outer surfaces of the pair of legs of the movable frame, and movement of the movable frame in a direction along the claw movement guide shaft member is suppressed. It is a removal tool. Effect of the Invention

[0007] According to the present invention, the workability of the extraction work using the extraction tool can be improved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of an extraction tool according to an embodiment of the present invention. [Diagram 2] 2A and 2B are a front view of the extraction tool and a cross-sectional view of a workpiece to be extracted, showing a scene in a extraction process using the extraction tool of FIG. 1. [Diagram 3] 2 is a front view of the drawing tool and a cross-sectional view of a workpiece to be drawn, showing a scene in a drawing process using the drawing tool of FIG. 1; FIG. [Figure 4] 3A and 3B are a front view of the drawing tool and a cross-sectional view of a workpiece to be drawn, showing a scene in a drawing process using the drawing tool of FIG. 1 , and show a scene following FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The following is an embodiment of the present invention, and is not intended to limit the present invention.

[0010] Figure 1 shows a perspective view of the drawing tool 1, and Figures 2 to 4 show diagrams of the drawing process using the drawing tool 1. The drawing direction is Z, and two axes that are perpendicular to the drawing direction Z and intersect each other perpendicularly are X and Y. The extraction tool 1 of this embodiment includes a locking claw support 10 and a guide 20. The locking claw support 10 has two hook portions 11, 11, a claw movement guide shaft member 12, a movable frame 13, two bolts 14, 14, two bolts 15, 15 as extraction direction guide shaft members, and nuts 16, 16.

[0011] The extraction tool 1 is a tool that extracts a second member 90, which is fitted into a first member 80, in a predetermined extraction direction Z to separate the second member 90 from the first member 80. In the illustrated example, the first member 80 is a manifold block, and the second member 90 is a valve cartridge. The cylindrical second member 90 fits into a hole 81 provided in the first member 80. In other words, the second member 90 fits inside the first member 80. The side wall of the cylindrical second member 90 has communication holes 91, 91 that communicate between the inside and outside of the cylindrical structure, positioned at 180° opposite each other. The communication holes 91, 91 are used as target sites for hanging hooks, and the extraction tool 1 is applied.

[0012] Each hook portion 11 includes a hook-shaped locking claw 11a that is locked to the second member 90. Each hook portion 11 has the locking claw 11a at one end and a slide guide hole 11b at the other end 11c. The claw movement guide shaft member 12 is disposed perpendicular to the pull-out direction Z (X direction) and is inserted into the slide guide hole 11b to hold the hook portion 11 slidably in the X direction. This prevents the angle of the hook portion 11 with respect to the pull-out direction Z from changing even if the hook portion 11 is moved in the X direction to adjust its position, thereby reducing the possibility that the locking claw 11a will become unlocked during the pull-out operation.

[0013] The two hook portions 11, 11 have locking claws 11a, 11a that protrude outward in opposite directions (opposite directions in the X direction). The two hook portions 11, 11 are both held by one claw movement guide shaft member 12 and are held movable along the claw movement guide shaft member 12 until they approach each other and come into contact with each other. Therefore, the distance between the locking claws 11a, 11a can be reduced, making it easy to insert them inside the second member 90. The insertable width of the pair of hook portions 11, 11 can be reduced, making it possible to pull out smaller parts.

[0014] The hook portion 11 has an arm portion 11d that extends in the pulling-out direction Z and connects between the locking claw 11a and the other end portion 11c. The slide guide hole 11b (the other end 11c) protrudes in the same direction as the locking claw 11a, and the hole length L of the slide guide hole 11b is longer than the width W of the arm portion 11d. Since the hole length L of the slide guide hole 11b is long, the hook portion 11 is held by the claw movement guide shaft member 12 with high precision, and rattling is suppressed. In addition, since the slide guide hole 11b (the other end 11c) protrudes in the same direction as the locking claw 11a, the deviation in the X direction between the fulcrum at the other end 11c and the locking claw 11a is kept small, and the moment load on the hook portion 11 during the pulling-out operation is kept small. Therefore, the angle of approximately 90° between the claw movement guide shaft member 12 and the arm portion 11d, and the parallelism of the projection direction of the claw movement guide shaft member 12 and the locking claw 11a are precisely maintained. This prevents the locking claw 11a from coming off the communication hole 91 of the second member 90 during the pulling-out operation, and allows a strong pulling-out force to be applied.

[0015] The claw movement guide shaft member 12 is rod-shaped with its axial direction aligned in the X direction, and has holes 12a, 12a at both ends for inserting bolts 14, 14 therethrough. The movable frame 13 has a gate-shaped structure, and the central beam portion extending in the X direction corresponds to the grip component G1. Legs 13a, 13a at both ends extend in the Z direction. Screw holes 13b, 13b are drilled in the legs 13a, 13a in the Z direction. The screw holes 13b, 13b are provided with female screws. The bolts 14 are inserted through the holes 12a and screwed into the screw holes 13b, whereby both ends of the claw movement guide shaft member 12 are fixed to the lower ends of the legs 13a of the movable frame 13. That is, the claw movement guide shaft member 12 is supported by the movable frame 13 at both ends. Since the claw movement guide shaft member 12 is supported at both ends, it is possible to abut the two hook portions 11, as described above. Furthermore, since the claw movement guide shaft member 12 is supported at both ends, the supporting force for supporting the two hook portions 11 is high.

[0016] The guide 20 also has a gate-shaped structure. The central beam portion extending in the X direction corresponds to the grip component G2. The grip component G1 and the grip component G2 form the grip G. The legs 20a, 20a at both ends extend in the Z direction. The guide 20 is arranged so that the inner surfaces of the legs 20a, 20a of the guide 20 face the outer surfaces of the legs 13a, 13a of the movable frame 13, and the movable frame 13 is accommodated in the gate-shaped structure of the guide 20. The inner surfaces of the legs 20a, 20a of the guide 20 and the outer surfaces of the legs 13a, 13a of the movable frame 13 may rub against each other or may have a gap therebetween. With this configuration, even if the legs 13a, 13a of the movable frame 13 are loaded during removal and move laterally, the movement is suppressed by the inner surfaces of the legs 20a, 20a of the guide 20. In this arrangement, extraction direction guide holes 20b, 20b are formed in the guide 20 so as to be coaxial with the screw holes 13b, 13b. The inner circumferential surfaces of the extraction direction guide holes 20b, 20b and the outer circumferential surfaces of the unscrewed portions of the bolts 15, 15 serving as extraction direction guide shaft members are configured to have dimensions that allow sliding therebetween. The bolts 15, 15 are inserted into the extraction direction guide holes 20b, 20b from the outside of the gate structure, and the male threads at the tips of the bolts 15, 15 are screwed into the nuts 16, 16 and then into the screw holes 13b, 13b. The length of extension of bolts 15, 15 from grip component G1 of movable frame 13 is appropriately adjusted, and bolts 15, 15 are fastened and fixed by nuts 16, 16.

[0017] The bolts 15, 15 serving as the pull-out direction guide shaft members guide the locking claw support 10 relative to the guide 20 along the pull-out direction and the direction opposite to the pull-out direction (both directions of the Z axis). Two of these pulling direction guide shaft members are provided, one at each end of the grip G. This makes it easier to secure space for the grip G and makes it easier to efficiently transmit the pulling force from the grip G to the hook portions 11, 11.

[0018] The nuts 16, 16 also function as restriction members to prevent pinching. That is, the nuts 16, 16 function as restricting members for preventing entrapment, which maintain the gap C between the grip component G1, which is part of the locking claw support 10 and constitutes the grip G, and the grip component G2, which is part of the guide 20 and constitutes the grip G. Even when the grip G is gripped, the gap C is maintained by the height of the nuts 16, 16 (see FIG. 4). This makes it difficult for the hand to be pinched, and prevents injury or pain to the user.

[0019] The lower end faces 20c, 20c of the legs 20a, 20a of the guide 20 correspond to the end face that is engaged with the first member 80 in the opposite direction to the pulling-out direction (the negative direction of the Z axis). The two bolts 15, 15 serving as the pulling-out direction guide shaft members described above slide into the pulling-out direction guide holes 20b, 20b, whereby the guide 20 guides the locking claw support body 10 along the pulling-out direction Z and the direction opposite to the pulling-out direction Z.

[0020] Now, the procedure for the extraction operation using the extraction tool 1 will be described. First, as shown in FIG. 2, the two hook portions 11, 11 are brought close to each other at approximately the center, if necessary abutting each other, so that they can be inserted into the second member 90, and then inserted into the cylindrical structure of the second member 90. Next, as shown in FIG. 3, the hook portions 11, 11 are pulled away from each other, so that the locking claws 11a, 11a enter the communication holes 91, 91. 4, gripping hand G is held by hand H, and the second member 90 is pulled out from the hole 81 of the first member 80. At this time, a pulling force F1 is generated by the gripping force of hand H, and is applied to the pulling tool 1. The pulling force F1 is applied to the second member 90, and a reaction force F2 is applied from the lower end faces 20c, 20c to the upper face of the first member 80, so that the guide 20 does not move relative to the first member 80, and the locking claw support body 10 including the hook portions 11, 11 moves in the Z direction relative to the first member 80, and the second member 90 can be pulled out from the first member 80. As described above, the extraction work can be carried out quickly and with good workability. In the removal tool 1 of this embodiment, a grip G is provided on the locking claw support 10 and the guide 20, which is capable of applying a removal force to move the locking claw support 10 in the removal direction Z relative to the guide 20 and remove the first member 80 when gripped. This makes it possible to perform the above-mentioned removal operation.

[0021] As described above, according to the removal tool 1 of the present embodiment, the removal operation for separating two members that fit together can be performed quickly, and the workability is excellent. Furthermore, when there is a next pulling-out operation, the locking claw support 10 can be slid down (moved) relative to the guide 20, so that the next pulling-out operation can be started quickly and the pulling-out operation can be completed quickly. It is also possible to perform the pulling-out operation repeatedly within a short period of time. Therefore, according to the extraction tool 1 of the present embodiment, the workability of the extraction work by the extraction tool can be improved.

[0022] The extraction tool 1 of the above embodiment is configured to extract a second member that fits inside a first member. Regardless of this, the present invention may be configured and implemented for use in extracting a second member that fits outside a first member. For example, a bearing that fits onto a shaft. In this case, the locking claws may be oriented inward, and a structure may be added to the lower end of the guide so that it can lock onto (contact) the first member. Moreover, the shape of the locking claw may be designed appropriately to match the shape of the engaging portion of the second member. [Explanation of symbols]

[0023] 1 Removal tool 10. Locking claw support 11 Hook part 11a Locking claw 11b Slide guide hole 11d Arm section 12 Jaw movement guide shaft member 13 Movable Frame 13a,13a legs 13b, 13b screw hole 14 Volts 15 Bolt (withdrawal direction guide shaft component) 16 Nut 20 Guide 20a Legs 20b Guide hole for removal direction 20c Lower end surface 80 First member 81 Hole 90 Second member 91 Communication hole G. Gripping Hands G1 Gripping Hand Component G2 Gripping Hand Component Z Pulling direction

Claims

1. A removal tool for removing a cylindrical second member, the second member being fitted into a hole of a first member and having a pair of insertion holes at opposing positions that communicate between an inside and an outside of the first member, from the first member by removing the second member in a predetermined removal direction, a locking claw support body including a locking claw that is locked to the second member; a guide having an end surface in an opposite direction to the pulling-out direction that is engaged with the first member, the guide guiding the locking claw support body along the pulling-out direction and the opposite direction to the pulling-out direction, The locking claw support member has a hook portion, a claw movement guide shaft member, and a movable frame, The claw movement guide shaft member is supported at both ends by the movable frame, The hook portion includes two hooks each having the locking claws that protrude outward in opposite directions, and each hook portion has the locking claw at one end and a slide guide hole at the other end, the claw movement guide shaft member is disposed perpendicular to the pulling direction, and is inserted into the slide guide hole to slidably hold the hook portion; The two hook portions are both held by one of the claw movement guide shaft members and are held movably along the claw movement guide shaft member until they approach each other and come into contact with each other, The movable frame and the guide each have a gate-shaped structure having a pair of legs at both ends extending in the removal direction, An extraction tool in which the movable frame is housed within the gate-shaped structure of the guide so that the inner surfaces of a pair of legs of the guide face the outer surfaces of a pair of legs of the movable frame, and movement of the movable frame in the direction along the claw movement guide shaft member is suppressed.

2. a grip that can be gripped to move the locking claw support body in the pulling direction relative to the guide and apply a pulling force to pull out the second member is formed on the locking claw support body and the guide, a restricting member for preventing pinching that maintains a gap between a grip component that is a part of the locking claw support and that constitutes the grip, and a grip component that is a part of the guide and that constitutes the grip, Two pull-out direction guide shaft members are provided at both ends of the grip, and the two pull-out direction guide shaft members are arranged to slideably guide the locking claw support body relative to the guide in the pull-out direction and in a direction opposite to the pull-out direction.

2. The extraction tool according to claim 1, wherein the length of extension of the extraction direction guide shaft member from the latching claw support body is adjustable.

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