Auxiliary tool for disassembling oil seal

Abstract

An oil seal removal tool is provided with: a handle that is held by a worker; the blade part is arranged at the tail end of the handle and penetrates into the oil seal; and a fulcrum body which is provided in the middle of the handle, protrudes in a direction perpendicular to the longitudinal direction of the handle, and becomes a fulcrum when the handle is rotated by coming into contact with the mounted portion to which the oil seal is mounted.

Description

Technical Field

[0001] The present invention relates to an oil seal disassembly aid. Background Art

[0002] Conventional oil seal extraction tools include a tool body and a claw. The tool body is provided with a through hole and a fulcrum portion. The claw is fixed to the tool body. When removing the oil seal from the engine housing, the operator inserts the operating handle into the through hole of the tool body, makes the fulcrum portion contact the engine housing, hooks the end of the claw on the oil seal, and then rotates the operating handle with the fulcrum portion as a fulcrum (for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2006-15473 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the above-mentioned conventional oil seal extraction tool, when removing the oil seal, it is necessary to insert a dedicated operating handle into the through hole of the tool body, and the operation is laborious.

[0008] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to obtain an oil seal removal tool that can more easily remove an oil seal.

[0009] Means for solving problems

[0010] The oil seal removal tool disclosed herein comprises: a handle gripped by an operator; a blade portion provided at the end of the handle and piercing the oil seal; and a fulcrum body provided at the middle portion of the handle and protruding in a direction perpendicular to the length direction of the handle and serving as a fulcrum for rotating the handle by abutting against a mounted portion on which the oil seal is mounted.

[0011] Effects of the Invention

[0012] According to the oil seal removal aid disclosed in the present invention, the oil seal can be removed more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view showing the oil seal removal tool according to the first embodiment.

[0014] Figure 2 Yes means Figure 1 Side view of the oil seal removal tool.

[0015] Figure 3 Yes means Figure 1 Bottom view of the oil seal removal tool.

[0016] Figure 4 Yes means Figure 1 Front view of the oil seal removal tool.

[0017] Figure 5 Yes means Figure 1 Rear view of the oil seal removal tool.

[0018] Figure 6 It is a cross-sectional view showing the oil seal, the shaft member, and the mounted portion according to the first embodiment.

[0019] Figure 7 It means that Figure 1 An illustration showing the state when the blade of the oil seal removal tool pierces the oil seal.

[0020] Figure 8 It means to make Figure 1 An illustration of the state when the handle of the oil seal removal tool is rotated.

[0021] Fig. 9 It means that Figure 1 A side view of the oil seal removal tool with the blade portion raised.

[0022] Fig.10 It means from Fig. 9 A side view of a state in which the fulcrum body is away from the blade portion.

[0023] Fig.11 It means from Fig.10 A side view of the state when the blade is raised.

[0024] Fig.12 This is a top view showing that only the first blade is inserted into the oil seal and the handle is rotated.

[0025] Fig.13 This is a plan view showing a state in which the blade that pierces the oil seal is switched from the first blade to the second blade.

[0026] Fig.14 It means from Fig.13 Top view of the handle rotating in the opposite direction.

[0027] Fig.15 This is a side view showing the oil seal removal tool when another fulcrum body is installed. DETAILED DESCRIPTION

[0028] Hereinafter, embodiments will be described with reference to the drawings.

[0029] Implementation method 1.

[0030] Figure 1 It is a top view showing the oil seal removal tool according to the first embodiment. Figure 2 Yes means Figure 1 Side view of the oil seal removal tool. Figure 3 Yes means Figure 1 Bottom view of the oil seal removal tool. Figure 4 Yes means Figure 1 Front view of the oil seal removal tool. Figure 5 Yes means Figure 1 Rear view of the oil seal removal tool. Figure 6 It is a side view showing the oil seal, the shaft member, and the mounted portion according to the first embodiment.

[0031] exist Figure 1 In Figure 6 The oil seal removal tool 100 is used when the oil seal 300 shown is removed from the mounted portion 400 along the shaft member 200 .

[0032] Here, the shaft member 200 is, for example, a main shaft of a traction machine of an elevator (not shown). The mounted portion 400 is a part of the traction machine that supports the main shaft. The oil seal 300 is mounted on the mounted portion 400. The oil seal 300 is a rubber annular member that prevents the lubricant applied inside the traction machine from flowing out to the outside.

[0033] The oil seal removal tool 100 includes a handle 110 , a blade 120 , a fulcrum body 130 , and a protective member 140 .

[0034] The handle 110 is a member held by an operator. The blade 120 is provided at the distal end of the handle 110. In addition, an end 111 of the handle 110 on the opposite side to the distal end is chamfered.

[0035] The blade portion 120 is a portion that pierces the oil seal 300 , and includes a first blade 121 and a second blade 122 .

[0036] The first blade 121 protrudes from the end of the handle 110 obliquely with respect to the longitudinal direction of the handle 110. The second blade 122 protrudes from the end of the handle 110 obliquely with respect to the longitudinal direction of the handle 110 in a direction different from that of the first blade 121.

[0037] The fulcrum body 130 is disposed at the middle portion of the handle 110. The fulcrum body 130 protrudes in a direction perpendicular to the length direction of the handle 110. Figure 2 As shown, the amount of protrusion of the fulcrum body 130 from the handle 110 is h1. The fulcrum body 130 abuts against the mounted portion 400 to serve as a fulcrum when the handle 110 is rotated.

[0038] The fulcrum body 130 has a fulcrum body main body 131 and a fastener 132. The fastener 132 fixes the position of the fulcrum body main body 131 relative to the handle 110. When the fastener 132 is loosened, the fulcrum body main body 131 can move in the length direction of the handle 110.

[0039] In this way, the fulcrum body 130 is attached to the handle 110 so that the position in the longitudinal direction of the handle 110 can be adjusted.

[0040] The protection member 140 is a member for protecting the blade 120. The protection member 140 is a rubber annular member, and is fixed to the handle 110.

[0041] The protective member 140 is pressed against the oil seal 300 and elastically deformed before the blade 120 contacts the oil seal 300. The protective member 140 may also be pressed against the attached portion 400 and elastically deformed depending on the orientation of the oil seal removal tool 100.

[0042] Next, a first method of using the oil seal removal tool 100 will be described.

[0043] Figure 7 It means that Figure 1 1 and 2 are explanatory diagrams of a state in which the blade 120 of the oil seal removal aid 100 is inserted into the oil seal 300. In the following description, the direction in which the oil seal 300 is removed is referred to as a first direction, and the opposite direction thereof is referred to as a second direction.

[0044] First, the operator brings the tip of the blade 120 into contact with the oil seal 300 . Then, the operator strikes the end 111 with the hammer 500 to cause the blade 120 to penetrate into the oil seal 300 .

[0045] Figure 8 It means to make Figure 1 FIG. 1 is an explanatory diagram of a state in which the handle 110 of the oil seal removal tool 100 is rotated.

[0046] The operator brings the bottom of the fulcrum body 130 into contact with the mounted portion 400 and rotates the handle 110 . As a result, the blade 120 is lifted in the first direction, and the oil seal 300 is removed from the mounted portion 400 .

[0047] Next, a second method of using the oil seal removal tool 100 will be described.

[0048] Fig. 9 It means that Figure 1 1 is a side view of a state in which the blade portion 120 of the oil seal removal tool 100 is lifted in the first direction. Fig.10 It means from Fig. 9 The fulcrum body 130 is a side view of a state in which the blade portion 120 is separated from the fulcrum body 130. Fig.11 It means from Fig.10 The state of the blade 120 is raised in the first direction. Figures 9 to 11 In the figure, the oil seal 300 is not shown.

[0049] exist Fig. 9In the process, the operator pierces the blade 120 into the oil seal 300, rotates the handle 110, and lifts the blade 120 in the first direction. The lifting height at this time is referred to as L1.

[0050] Furthermore, the operator Fig.10 In the process, the blade 120 is not pulled out from the oil seal 300, but the position of the fulcrum body 130 is moved away from the blade 120. As a result, the end 111 side of the handle 110 is lifted in the first direction.

[0051] Next, the operator Fig.11 The handle 110 is rotated to further lift the blade 120 in the first direction. Thus, the blade 120 is lifted to a lift height L2 higher than the lift height L1.

[0052] In this way, by repeating the operation of lifting the blade 120 in the first direction and the operation of moving the fulcrum body 130 away from the blade 120 , the oil seal 300 is gradually separated from the mounted portion 400 .

[0053] Next, a third method of using the oil seal removal tool 100 will be described.

[0054] Fig.12 This is a plan view showing that only the first blade 121 is inserted into the oil seal 300 and the shank 110 is rotated. Fig.13 This is a plan view showing a state in which the blade that pierces the oil seal 300 is switched from the first blade 121 to the second blade 122 . Fig.14 It means from Fig.13 A top view showing the handle 110 being rotated in the reverse direction in the state.

[0055] exist Fig.12 In the embodiment, the operator pierces only the first blade 121 into the oil seal 300, and then makes the bottom of the fulcrum body 130 contact the mounted portion 400. Then, the operator rotates the handle 110 with the longitudinal direction of the handle 110 as the rotation axis so as to lift the first blade 121 in the first direction. By this rotation, the oil seal 300 is lifted with the fulcrum body 130 as the fulcrum.

[0056] Then, in Fig.13 In the embodiment, the operator pierces the second blade 122 into the oil seal 300 while pulling out the first blade 121 from the oil seal 300. At this time, the operator pierces the second blade 122 into a position closer to the second direction than the position into which the first blade 121 is inserted.

[0057] Then, in Fig.14 In the process, the operator rotates the handle 110 in the direction of lifting the second blade 122 in the first direction. By this rotation, the oil seal 300 is further lifted with the fulcrum body 130 as a fulcrum.

[0058] As the first blade 121 and the second blade 122 repeat this operation, the oil seal 300 is gradually separated from the mounted portion 400 .

[0059] Next, replacement of the fulcrum body 130 will be described.

[0060] Fig.15 1 is a side view showing the oil seal removal tool 100 when another fulcrum body is attached. The fulcrum body 130 and the other fulcrum body 130a are each attachable to and detachable from the end 111 of the handle 110. Therefore, the fulcrum body 130 can be replaced with another fulcrum body 130a.

[0061] When the other fulcrum body 130a is attached to the handle 110, the protrusion amount of the other fulcrum body 130a from the handle 110 is h2. The protrusion amount h2 is different from the protrusion amount h1. In the first embodiment, the protrusion amount h2 is longer than the protrusion amount h1.

[0062] In this way, the handle 110 can be replaced with another fulcrum body 130 a having a different protrusion amount from the fulcrum body 130 , so the lifting height of the blade 120 can be changed.

[0063] The oil seal removal tool 100 of the first embodiment includes a blade 120 and a fulcrum body 130. The blade 120 is provided at the end of the handle 110 and pierces the oil seal 300. The fulcrum body 130 is provided at the middle portion of the handle 110 and protrudes in a direction perpendicular to the longitudinal direction of the handle 110. In addition, the fulcrum body 130 abuts against the mounted portion 400 to which the oil seal 300 is mounted, thereby becoming a fulcrum when the handle 110 is rotated.

[0064] Therefore, according to the oil seal removal tool 100 of the first embodiment, the oil seal 300 can be removed more easily.

[0065] In addition, the fulcrum body 130 is attached to the handle 110 so that the position in the longitudinal direction of the handle 110 can be adjusted. Therefore, the lifting height of the blade 120 when the handle 110 is rotated can be adjusted.

[0066] The blade 120 has a first blade 121 that protrudes obliquely from the end of the shank 110 with respect to the longitudinal direction of the shank 110. The blade 120 has a second blade 122 that protrudes obliquely from the end of the shank 110 with respect to the longitudinal direction of the shank 110 in a direction different from the first blade 121. Therefore, the load applied to the blade 120 when the oil seal 300 is lifted can be dispersed.

[0067] The oil seal removal tool 100 further includes another fulcrum body 130a that protrudes from the handle 110 by a different amount than the fulcrum body 130. The fulcrum body 130 and the other fulcrum body 130a are both attachable and detachable to the handle 110. Therefore, by replacing the fulcrum body 130, the lift height of the blade 120 can be adjusted.

[0068] In addition, the end portion 111 of the handle 110 on the opposite side to the tip is chamfered, so that compared with a case where there is a corner, it is possible to reduce damage when the end portion 111 comes into strong contact.

[0069] In addition, since the end 111 is struck by the hammer 500, the shape of the corner portion is deformed if the end 111 is not chamfered. If the corner portion of the end 111 is greatly deformed, it is difficult to remove the fulcrum body 130 from the end 111, and the fulcrum body 130 cannot be replaced. Therefore, by chamfering the end 111 as in the first embodiment, this situation can be avoided.

[0070] When the blade 120 penetrates the oil seal 300, the protective member 140 is pressed against at least one of the mounted portion 400 and the oil seal 300 and elastically deforms before the blade 120 and the oil seal 300 come into contact.

[0071] Description of symbols

[0072] 100: oil seal removal aid; 110: handle; 111: end; 120: blade; 121: first blade; 122: second blade; 130, 130a: fulcrum body; 140: protection component; 200: shaft component; 300: oil seal; 400: mounted portion; 500: hammer.

Claims

1. An oil seal disassembly aid, comprising: A handle, which is held by the operator; a blade portion, which is disposed at the end of the handle and pierces the oil seal; and The fulcrum body is provided at the middle portion of the handle and protrudes in a direction perpendicular to the longitudinal direction of the handle, and serves as a fulcrum when the handle is rotated by abutting against the mounted portion to which the oil seal is mounted.

2. The oil seal removal aid according to claim 1, wherein: The fulcrum body is attached to the handle so that the position in the longitudinal direction of the handle can be adjusted.

3. The oil seal removal aid according to claim 1 or 2, wherein: The blade has: a first blade protruding obliquely from the distal end relative to the length direction of the handle; as well as A second blade protrudes from the distal end in a direction different from the first blade at an angle relative to the length direction of the handle.

4. The oil seal removal aid according to any one of claims 1 to 3, wherein: The oil seal removal aid further includes another fulcrum body having a protrusion amount from the handle different from that of the fulcrum body, The fulcrum body and the other fulcrum bodies are respectively attachable to and detachable from the handle.

5. The oil seal removal aid according to any one of claims 1 to 4, wherein: The end portion of the shank opposite to the tip is chamfered.

6. The oil seal removal aid according to any one of claims 1 to 5, wherein: The oil seal removal tool further comprises an annular protective member fixed to the handle. When the blade penetrates the oil seal, the protection member is pressed against at least one of the mounted portion and the oil seal and elastically deformed before the blade comes into contact with the oil seal.

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