CN213004783U - Tool for mounting object provided with through hole - Google Patents

Abstract

The utility model relates to a tool for installing installation object that is provided with through hole, characterized in that, the tool includes handle, the installation object joint portion that is used for with the installation object joint, is used for making the installation object align with outstanding target part's alignment portion, the appearance of installation object joint portion matches with the shape of installation object's through hole, the tool is constructed and inserts to the through hole of installation object in the installation for the installation object is engaged with installation object joint portion, alignment portion is constructed and is made to load the instrument that has the installation object and insert on outstanding target part with aiming at. With the tool of the present invention, accurate alignment of the mounting object (e.g., an oil seal integrated with the cover plate) and the target component (e.g., the crankshaft) can be ensured, and damage to the mounting object and the target component can also be avoided.

Description

Tool for mounting object provided with through hole

Technical Field

The utility model relates to a tool for installing the installation object that is provided with the through hole. In particular, the present invention relates to a tool for mounting an oil seal on a crankshaft of an engine.

Background

An engine is a machine that can convert other forms of energy into mechanical energy to produce power. Engines are widely used in various products (e.g., automobiles). In order to prevent the lubricating oil in the crankcase of the engine from leaking and prevent foreign matters such as sand, dust, moisture and the like from entering the engine, an oil seal needs to be installed on the crankshaft of the engine.

Currently, it is conventional to manually push the oil seal directly onto the crankshaft of the engine. However, during manual installation of the oil seal, it is often difficult to ensure that the oil seal is precisely aligned with the crankshaft; sometimes, the end face of the crankshaft may be damaged during the installation process, which may further result in oil leakage, and even damage to the crankcase housing and shortened service life.

SUMMERY OF THE UTILITY MODEL

In order to solve one or more of the above-mentioned problems occurring in the prior art, the present invention provides a tool for mounting a mounting object provided with a through-hole, characterized in that the tool comprises a handle, a mounting object engaging portion for engaging with the mounting object, an aligning portion for aligning the mounting object with a protruding target member, an outer shape of the mounting object engaging portion matching a shape of the through-hole of the mounting object, the tool being configured to be inserted into the through-hole of the mounting object during mounting so that the mounting object engages with the mounting object engaging portion, the aligning portion being configured to insert the tool loaded with the mounting object onto the protruding target member in alignment.

With the tool of the present invention, precise alignment of the mounting object (e.g., an oil seal preferably integrated with the cover plate) and the target component (e.g., the crankshaft) can be ensured, and/or damage to the mounting object and the target component can be avoided.

According to a preferred aspect, the tool is further provided with a guide portion for guiding the mounting object to the mounting object engaging portion, and a support plate cooperating with the guide portion for supporting the mounting object before the tool is inserted into the through-hole of the mounting object, the support plate being provided with at least one stopper defining a position of the mounting object on the support plate. By using the guide part and the support plate, the installation object can be accurately sleeved on the tool without damaging the installation object.

According to a preferred aspect, the guide portion is provided with a through groove at the center, and the support plate is provided with a positioning rod configured to be located at the center of the through hole of the supported mounting object and to be inserted into the through groove of the guide portion when a tool is inserted into the through hole of the mounting object to guide the mounting object onto the mounting object engagement portion. In this way, a precise centering insertion of the tool into the through-hole of the mounting object is ensured.

According to a preferred aspect, the handle is provided with a locking pin protruding through the mounting object engagement portion, the locking pin being configured to releasably lock the guide portion to the tool; the handle is further provided with an actuating portion, and when the actuating portion is actuated, the locked state of the guide portion is released, so that the guide portion is separated from the tool. In this way, when the mounting object has been guided onto the mounting object engagement portion by the guide portion, the guide portion can be disengaged from the tool.

According to a preferred aspect, the locking pin is provided with a protrusion configured to releasably engage with a groove provided in the guide to lock the guide to the tool; the actuating portion of the handle is a button, and the locked state of the guide portion is released when the button is pressed. Thus, locking and releasing of the guide portion can be conveniently achieved by a simple button and latch structure.

According to a preferred aspect, an outer surface of the mounting object engagement portion is subjected to a polishing process. Thus, the smooth joint portion for mounting object does not damage the mounting object.

According to a preferred aspect, the alignment portion is a recess provided at a bottom of the mounting object engagement portion, a bottom surface of the recess is provided with a magnet, the target member is made of alloy steel, and a reduced-size portion configured to be magnetically attracted into the recess is provided at a front end of the target member. In this way, during installation, the alignment portion will be attracted by the target component made of a magnetic metal (e.g., alloy steel) so that the alignment portion of the tool automatically snaps directly onto the reduced-size portion of the target component, thereby ensuring accurate alignment of the installation object with respect to the target component. Further, due to the magnetic attraction between the target component and the tool, the tool can also be prevented from being accidentally dropped during the mounting operation of the target component.

According to a preferred aspect, the mounting object is an oil seal integrated with a cover plate, and the target component is a crankshaft of an engine crankcase, the cover plate being provided with a cover plate hole having an inner diameter larger than that of the oil seal, the oil seal being located at an inner end portion of the cover plate hole. Utilize the utility model discloses an accurate alignment of oil blanket and bent axle can be ensured to the instrument to can also avoid damaging oil blanket and bent axle.

According to a preferred aspect, the mounting object engagement portion includes a cylindrical first engagement portion configured to engage with the oil seal, and a cylindrical second engagement portion that is closer to the handle with respect to the first engagement portion and configured to engage with the cover plate hole. The second engagement portion contributes to better guiding insertion of the tool into the through-hole of the mounting object.

According to a preferred aspect, the outer surface of the second engagement portion is provided with a rubber layer, which engages with the cover plate hole. Since the tool is made substantially entirely of alloy steel and the cover plate is usually made of plastic, the provision of a rubber layer on the outer surface of the second joint prevents damage to the cover plate during mounting.

Drawings

The present invention will now be described in detail hereinafter with reference to the accompanying drawings. It is understood that the drawings are not necessarily to scale and that the drawings are merely illustrative of exemplary embodiments of the disclosure and are not to be considered limiting of its scope. Wherein:

fig. 1 is a perspective view of a cover plate 30 of a crankcase 1, in which an oil seal 10 is integrated, as viewed from the inside;

fig. 2 is a perspective view of a tool 100 for mounting a mounting object provided with a through-hole according to the present invention, wherein the tool 100 is not attached with a guide 140;

fig. 3 is a cross-sectional view of the tool 100, with a guide 140 attached to the tool 100;

fig. 4 is a sectional view showing the cover plate 30 integrated with the oil seal 10 and the tool 100 inserted into the oil seal 10, in which the guide portion 140 has been detached from the tool 100, and some structural details have been simplified or omitted for convenience;

FIG. 5 is an enlarged view, partially in section, of FIG. 4, but with the guide 140 not yet disengaged from the tool 100, showing details of the inserted tool 100 in engagement with the oil seal 10 and the cover plate 30;

fig. 6 is a perspective view showing the tool 100 being inserted into the oil seal 10 within the cover plate 30 supported on the support plate 150;

fig. 7 is a perspective view showing a state where the cover plate 30 integrated with the oil seal 10 and the inserted tool 100 are integrally mounted to the crankcase 1;

fig. 8 shows the same condition as fig. 7, but with the oil seal 10 and cover plate 30 removed to show the tool 100 precisely fitted over the protruding crankshaft 20 by the alignment portion 130; and

fig. 9 is a perspective view showing the oil seal 10 having been mounted to the crankshaft 20 and the cover plate 30 having been mounted to the crankcase 1.

Detailed Description

Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the description of the various embodiments is illustrative only and is not intended to limit the technology of the present disclosure in any way. It is also to be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

It should be understood that like reference numerals refer to like elements throughout the several views. In the drawings, the dimensions of some of the elements may be modified, exaggerated, or reduced for clarity.

Unless otherwise defined, all terms used in the specification have the meanings commonly understood by those skilled in the art. Well-known functions or constructions may not be described in detail for brevity and/or clarity.

As used in this specification, the singular forms "a", "an", and "the" may include the plural forms as well, unless expressly stated otherwise. The terms "comprising," "including," and "containing" when used in this specification specify the presence of stated features, but do not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In the following, unless otherwise specified, "left", "right", "upper", "lower", "front", "rear", "high", "low", and the like are referred to directions in the drawings. It will be understood that spatial relationships such as "upper", "lower", "left", "right", "front", "rear", "high", "low", and the like are intended to describe the relationship of one feature to another in the drawings. It should be understood that the spatial relationship terms also include different orientations in use or operation of a tool for mounting a mounting object provided with a through-hole, in addition to the orientations shown in the drawings.

An exemplary embodiment of a tool 100 for mounting a mounting object provided with a through-hole will now be specifically described with reference to fig. 1 to 9. As an example, the structure and operation of the tool 100 will be described below specifically in connection with the case where the annular oil seal 10 as the mounting object is mounted to the engine crankshaft 20 as the target component.

In an exemplary embodiment, as shown in fig. 1, the mounting object to be mounted is an oil seal 10 in the form of a seal ring. The oil seal 10 is to be mounted to a crankshaft 20, which is a target component, projecting outward from the crankcase 1, as shown in fig. 9. The outer diameter of the crankshaft 20 is substantially equal to the inner diameter of the oil seal 10, but the crankshaft 20 is provided at the front end with a reduced-size portion reduced in size relative to the rest of the crankshaft, the reduced-size portion having an outer diameter smaller than the inner diameter of the oil seal 10. In an exemplary embodiment of the present invention, the cover plate 30 (e.g., front cover plate) is provided with a cover plate hole 31 therethrough. The inner diameter of the cover plate hole 31 is larger than that of the oil seal 10, and the thickness of the oil seal 10 is smaller than the depth of the cover plate hole 31. The oil seal 10 is mounted in advance at the inner end of the cover plate hole 31, being integrated with the cover plate 30 of the crankcase 1. At the time of mounting, the cover plate 30 and the oil seal 10 are integrally mounted to the crankcase 1 by means of the tool 100, as shown in fig. 7.

Next, the structure of the tool 100 will be specifically described. As shown in fig. 2 and 3, the tool 100 may include a handle 110, a mounting object engaging portion 120 for engaging with a mounting object, an aligning portion 130 for aligning the mounting object with a target member, and optionally a guide portion 140 for guiding the mounting object to the mounting object engaging portion, and the like as a whole, note that the guide portion 140 is not essential.

The handle 110 is provided with a locking pin 111 in the form of a shaft, and the locking pin 111 will penetrate the mounting object engaging part 120. A projection 112 is provided on a portion of the lock pin 111 protruding from the attachment object engagement portion 120, and the projection 112 is to be engaged with a groove provided in the guide portion 140 to lock the guide portion 140 to the tool 100. The handle 110 is also provided with an actuating portion 113, such as a button. When the actuating portion 113 is pressed, the protruding portion 112 is retracted, and the state in which the guide portion 140 is locked by the locking pin 111 will be released, whereby the guide portion 140 will be separated from the tool 100.

The mounting object engaging portion 120 is provided with a first engaging portion 121 configured to engage with the oil seal 10 as a mounting object. The first engagement portion 121 has an outer shape matching the shape of the through-hole of the oil seal 10. In an exemplary embodiment, the first engagement portion 121 is cylindrical, and the outer diameter of the first engagement portion 121 is substantially equal to the inner diameter of the oil seal 10. The annular oil seal 10 will be fitted over the first engagement portion 121. The outer surface of the first engagement portion 121 to be engaged with the oil seal 10 is subjected to a burnishing treatment so that the smooth first engagement portion 121 does not damage the oil seal 10 engaged therewith. Preferably, the mounting object engaging portion 120 may further be provided with a second engaging portion 122 configured to engage with the cover plate hole 31 of the cover plate 30 (specifically, a portion of the cover plate hole 31 where the oil seal 10 is not mounted). The shape of the second engaging portion 122 matches the shape of the cover plate hole 31 of the cover plate 30. In the exemplary embodiment, second engagement portion 122 is also cylindrical. As shown in fig. 2 and 3, the second engagement portion 122 has a larger outer diameter than the first engagement portion 121 and is closer to the handle 110 than the first engagement portion 121. The second engagement portion 122 facilitates better guided insertion of the tool 100 into the oil seal 10. The outer surface of the second engagement portion 122 may be further provided with a rubber layer 123, and the rubber layer 123 will be in contact with the cap plate hole 31 of the cap plate 30. Since the tool 100 is made substantially entirely of alloy steel and the cover plate 30 is typically made of plastic, providing the rubber layer 123 on the outer surface of the second joint 122 prevents damage to the cover plate 30 during installation. Fig. 4 and 5 specifically show the engagement between the first engagement portion 121 and the oil seal 10 and the engagement between the second engagement portion 122 and the cover plate hole 31 of the cover plate 30 after the tool 100 is inserted into the oil seal 10 and the cover plate hole 31 of the cover plate 30.

The alignment portion 130 is used to align the oil seal 10 that has been fitted over the attachment subject engagement portion 120 with the crankshaft 20. Specifically, the alignment portion 130 is a recess recessed inward from the bottom surface of the first engagement portion 121 of the mounting object engagement portion 120 by a certain distance, and the shape of the recess is complementary to the shape of the reduced-size portion of the protruding crankshaft 20. In a preferred exemplary embodiment, the alignment portion 130 is a magnetic alignment portion that provides a magnet (e.g., six magnets) at the bottom of the recess. In this way, when the oil seal 10 into which the tool 100 is inserted and the cover plate 30 are integrally fitted to the crankcase 1, the alignment portion 130 will be attracted by the crankshaft 20 made of a magnetic metal (e.g., alloy steel), so that the alignment portion 130 of the tool 100 will automatically snap directly onto the reduced-size portion of the crankshaft 20 (as shown in fig. 7, 8), thereby ensuring accurate alignment of the oil seal 10 to be installed with respect to the crankshaft 30. Further, due to the magnetic attraction between the crankshaft 20 and the tool 100, the tool 100 can also be prevented from accidentally falling off the crankshaft during the mounting operation of the oil seal 10, thereby damaging the oil seal and the cover plate that have fallen along therewith.

The guide portion 140 for guiding the oil seal 10 onto the mounting object engagement portion 120 of the tool 100 is substantially in the form of a cone. The guide 140 will be releasably locked to the tool 100 by means of the aforementioned locking pin 111. As shown in fig. 3, the guide part 140 is also provided with a through groove 141 at the center. Before inserting the tool 100 into the oil seal 10 integrated on the cap plate 30, the cap plate 30 is first placed at a predetermined position on the support plate 150, as shown in fig. 6. The support plate 150 is provided with at least one stopper 151 for defining a unique position of the cover plate 30 on the support plate 150. The support plate 150 is also provided with a positioning rod (not shown) configured to be located at the center of the oil seal 10 in the supported cover plate 30. When the tool 100 is inserted into the oil seal 10 in the cover plate 30 supported on the support plate 150, the positioning rods of the support plate 150 are inserted into the through grooves 141 of the guide parts 140. In this way, it is ensured that the tool 100 is inserted into the oil seal 10-integrated cover plate 30 with a correct centering, so that the oil seal 10 engages with the first engaging portion 121 and the cover plate 30 engages with the second engaging portion 122. Further, the outer surface of the guide portion 140 is also subjected to a polishing process, whereby the smooth guide portion 140 does not damage the oil seal 10 and the cap plate 30.

Next, the operation of the tool 100 will be specifically described.

First, as shown in fig. 6, the operator integrally places the cover plate 30 integrated with the oil seal 10 at a predetermined position on the support plate 150 such that the positioning rod of the support plate 150 is located at the center of the oil seal 10. Then, the operator applies lubricating oil to the surface of the tool 100, and inserts the tool 100 into the oil seal 10 in a centered manner with the through grooves 141 of the guide portion 140 aligned with the positioning rods of the support plate 150. After the tool 100 has been inserted into the oil seal 10 and the cover plate hole 31 of the cover plate 30 (as shown in fig. 5), the operator removes the entirety of the cover plate 30 integrated with the oil seal 10 and the inserted tool 100 from the support plate 150 while pressing the actuator portion 113 so that the locked state of the guide portion 140 is released, and the guide portion 140 will remain on the support plate 150. Fig. 4 shows the entire oil seal 10 integrated cover plate 30 and the inserted tool 100 removed from the support plate 150.

Next, the operator integrally carries the cover plate 30 integrated with the oil seal 10 and the inserted tool 100 to a position substantially aligned with the target component of the crankcase 1 to which the cover plate 30 is to be mounted and the crankshaft 20. At this time, the alignment portion 130 of the tool 100 will be automatically inserted straight onto the reduced-size portion of the protruding crankshaft 20 by the alignment portion 130 being magnetically attracted by the crankshaft 20, as shown in fig. 7, 8, where fig. 8 with the oil seal 10 and the cover plate 30 removed shows the tool 100 accurately inserted onto the reduced-size portion of the crankshaft 20 through the alignment portion 130.

Finally, the operator applies a certain pushing force on the cover plate 30 to push the oil seal 10 and the cover plate 30 integrated therewith toward the crankshaft 20. Since the surface of the tool 100 has been previously coated with lubricating oil, it is easy to push the oil seal 10 and the cover plate 30 until the oil seal 10 is pushed onto the crankshaft 20 and the cover plate 30 is pushed onto the crankcase 1. Thereafter, the operator pulls the handle 110 of the tool 100 backward to extract the tool 100, and screws the cover plate 30 to assemble the cover plate 30 to the crankcase 1. Fig. 9 shows the installed oil seal 10 and cover plate 30.

Other embodiments

Although the specific application of the tool 100 for mounting a mounting object provided with a through-hole according to the present invention has been described above only for the case of the annular oil seal 10 integrated with the cover plate 30, the present invention is not limited thereto.

For example, the tool 100 for mounting a mounting object provided with a through-hole according to the present invention may be used to mount a single oil seal 10 that is not integrated with the cap plate 30. In this case, the oil seal 10 is first separately mounted to the crankshaft 20, and then the cover plate 30 is mounted to the crankcase 1.

For example, the mounting object may be a member provided with a through-hole of any shape, without being limited to an annular oil seal, as long as the outer shape of the mounting object engagement portion 120 of the tool 100 matches the shape of the through-hole. For example, the tool 100 may be used to mount a mounting object provided with a square hole.

Further, although the tool 100 is described above as being inserted into the oil seal 10 with the guide 140 and the support plate 150 being accurately centered, the present invention is not limited thereto.

For example, the tool 100 may be provided without the guide portion 140 and the support plate 150, and instead the installer may manually insert the tool 100 into the oil seal 10 or manually pull the oil seal 10 over the tool 100.

The above description is exemplary rather than exhaustive. Many modifications to the embodiments will be readily apparent to those of ordinary skill in the art. It is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims (10)

1. A tool for mounting an installation object provided with a through hole, characterized in that the tool comprises a handle, an installation object engaging part for engaging with the installation object, an aligning part for aligning the installation object with a protruding target component, the installation object engaging part having an outer shape matching the shape of the through hole of the installation object, the tool is configured to be inserted into the through hole of the installation object during mounting so that the installation object engages with the installation object engaging part, and the aligning part is configured to insert the tool loaded with the installation object onto the protruding target component in alignment.

2. The tool for mounting a mounting object provided with a through-hole according to claim 1, further provided with a guide portion for guiding the mounting object to the mounting object engaging portion, and a support plate cooperating with the guide portion for supporting the mounting object before the tool is inserted into the through-hole of the mounting object, the support plate being provided with at least one stopper defining a position of the mounting object on the support plate.

3. The tool for mounting an attachment object provided with a through-hole according to claim 2, wherein the guide portion is provided with a through-groove at a center, the support plate is provided with a positioning rod configured to be located at the center of the through-hole of the supported attachment object and to be inserted into the through-groove of the guide portion when the tool is inserted into the through-hole of the attachment object to guide the attachment object onto the attachment object engaging portion.

4. A tool for mounting a mounting object provided with a through-going hole according to any one of claims 2-3, wherein the handle is provided with a locking pin protruding through a mounting object engagement portion, the locking pin being configured to releasably lock the guide portion to the tool; the handle is further provided with an actuating portion, and when the actuating portion is actuated, the locked state of the guide portion is released, so that the guide portion is separated from the tool.

5. The tool for installing an installation object provided with a through-hole according to claim 4, wherein the lock pin is provided with a projection configured to releasably engage with a groove provided in the guide to lock the guide to the tool; the actuating portion of the handle is a button, and the locked state of the guide portion is released when the button is pressed.

6. The tool for mounting a mounting object provided with a through-hole according to any one of claims 1 to 3, wherein an outer surface of the mounting object engagement portion is polished.

7. The tool for mounting a mounting object provided with a through-hole according to any one of claims 1 to 3, wherein the aligning portion is a recess provided at a bottom of a mounting object engaging portion, a bottom surface of the recess is provided with a magnet, the target member is made of alloy steel, and a reduced-size portion configured to be magnetically attracted into the recess is provided at a front end of the target member.

8. The tool for mounting a mounting object provided with a through-hole according to any one of claims 1 to 3, wherein the mounting object is an oil seal integrated with a cover plate, the target component is a crankshaft of an engine crankcase, the cover plate is provided with a cover plate hole having an inner diameter larger than that of the oil seal, and the oil seal is located at an inner end portion of the cover plate hole.

9. The tool for mounting an installation object provided with a through-hole according to claim 8, wherein the installation object engagement portion includes a cylindrical first engagement portion configured to engage with the oil seal and a cylindrical second engagement portion that is closer to the handle than the first engagement portion and configured to engage with the cover plate hole.

10. The tool for mounting a mounting object provided with a through-hole according to claim 9, wherein an outer surface of the second engagement portion is provided with a rubber layer, and the rubber layer is engaged with the cover plate hole.

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