JP2018188117A - Drawing-out tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawing-out tool for easily separating a hub at an axle end of a vehicle and a wheel center bore of a tire from an integrated state of adhering to each other.SOLUTION: Engaging screws 5, 6 are inserted through two arm members 3, 4, respectively, to be screwed into an engaging screw hole 1b extending through from a side face of a support member 1, from both side faces of the support member 1. Thereby, the engaging parts 3a, 4a of the arm members 3, 4 are tightly in contact with an engaging face 1e extending in all side faces of the support member 1 to be integrated with the support member 1. The engaging face 1e of the support member 1 is formed with sizes in directions corresponding to width and depth directions of the support member, different from each other so that a distance between tip parts of the projecting parts 3b, 4b provided in the arm members 3, 4 can be changed when the arm members 3, 4 are engaged with an engaging screw hole 1a in a similar manner to that described above. A tip side of a shaft part 2b is projected/retracted through the support member 1 by rotating a pressing member 2 having, at a tip, a pressing part 2c screwed into a screw hole provided to extend through from a center part of the engaging face 1e of the support member 1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pulling tool that allows easy removal of a tire integrated with a wheel.

The tire of an automobile has a rubber part on the outer periphery sealed with air combined with a wheel (made of aluminum or iron) attached to the end of the axle.
The rubber part of the tire has materials and shapes suitable for dry roads (summer use) and snowy roads (winter use), and it is necessary to change it every season especially in snowy areas.
The rubber part of the tire needs to be replaced whenever it wears and wears, punctures with nails, or ruptures due to abnormal air pressure.
This replacement of tires and replacement due to wear is routinely performed by automobile mechanics, and there are surprisingly many opportunities for ordinary users themselves to perform.

(1) Lift the car and lift the tire from the road surface. (2) Loosen or remove the bolt or nut that secures the tire wheel to the axle end. (3) Remove the tire integrated with the wheel from the axle end.

However, at the stage of removing the tire integrated with the wheel of (3) from the axle end, the part called the hub at the axle end and the wheel center bore (center hole) may be fixed, It may not be easily removed.

It is considered that the wheel center bore (center hole) is fixed due to multiple factors.
One is to narrow the gap between the wheel center bore (center hole) of the tire and the part called the hub at the end of the axle in order to make the rotation center of the tire accurate.
Secondly, rainwater and snowmelt containing a snow melting agent enter between the two narrow parts, and rust is generated due to heat conduction by the brakes, differences in materials of the two parts, and the like.

When it is stuck, it is generally released by applying an impact such as kicking the tire or hitting the outer periphery of the wheel with a hammer and applying vibration to the stuck part. Problems such as injury, scratches and damage caused by hammering with a hammer will occur.

Currently, there is no general-purpose tool that can safely and easily remove this fixed wheel.
For example, a tool having a mechanism capable of separating the wheel from the hub as in (US Patent Application Publication No. US2015 / 0143692 (Patent Document 1)) has been considered, but has not been widely distributed.

The reason why the above has not been widely distributed is that the tools that grip the position close to the outer shape with the tire and wheel integrated are large and the size becomes large. If adjustment takes time, even if it is safe, problems remain in terms of efficiency.

US Patent Application Publication No. US2015 / 0143692

SUMMARY OF THE INVENTION An object of the present invention is to provide an extraction tool that can efficiently and safely perform an extraction operation of an annular member fixed to an axle end hub with a small, simple, and lightweight configuration. is there.

In order to achieve the above object, the pulling tool of the present invention includes two arm members arranged at positions where the wheel center bore (center hole) fixed to the hub at the axle end is engaged, and the two arms. A support member in which an end portion of a retaining surface of the support member is latched to the latching portion of the member, a pressing member screwed so as to penetrate from a central portion of the retaining surface of the support member, and the support member An engagement screw for engaging the two arm members is integrated in the wheel center bore (center hole).

According to the extraction tool having the above-described configuration, the pressing portion reaches the hub at the tip of the axle that is fixed by rotating the connecting portion of the pressing member with a wrench or the like and screwing the shaft portion.
When the screwing is further advanced, the shaft portion of the pressing member moves the support member away from the hub, and at the same time, the protrusion of the arm member integrated with the support member engages with the wheel center bore (center hole). A pressure is applied to the part in the direction of peeling from the fixed hub, and the wheel is separated and detached.
With this simple configuration, the object to be pulled out fixed to the hub at the axle end can be pulled out efficiently, safely and in a short time.

Further, in the pulling tool according to an embodiment, when the pressure is applied to the engaging portion of the object to be pulled out by the protruding portions of the two arm members, the two arm members are substantially set with respect to the shaft of the pressing member. It is in a target position.

According to the extraction tool of the above-described embodiment, the cuboid support member between the two arm members is rotated by 90 degrees around the axis of the shaft portion of the pressing member, and the two arm members are attached so that different diameters or It is also possible to adapt to the shape wheel center bore (center hole).

Moreover, the extraction tool of one Embodiment is characterized by being latched in the state which the latching surface of the support member and the latching part of two arm members contact | adhered.

According to the extraction tool of the above embodiment, when the pressing portion of the pressing member reaches the hub, when the shaft portion is further screwed and the shaft portion of the pressing member moves the support member in the direction opposite to the hub, The arm member can move integrally in the opposite direction to the hub by close contact between the hooking surface of the support member and the hooking portion of the arm member.

Moreover, the extraction tool of one Embodiment is a screw which the said engagement screw can turn by hand rotation, It is characterized by the above-mentioned.

According to the extraction tool of the above-described embodiment, the engagement screw only needs to be screwed together so that the two arm members and the support member are integrated, and a tightening force by hand turning is sufficient. Between the engaging part of the hub and the wheel center bore (center hole), which is transmitted to the engaging part is the shaft part of the pressing member, the supporting member, the engaging surface of the supporting member, and the engaging part of the two arm members. No pressure is applied to the pressure.

Moreover, the drawing tool of one embodiment is characterized in that the direction of the engaging surface of the protrusion provided on the two arm members is not a surface arranged in a direction perpendicular to the shaft portion of the pressing member.

According to the extraction tool of the above-described embodiment, when the pressing portion of the pressing member reaches the hub and the shaft portion of the pressing member moves the support member in the direction opposite to the hub, 2 is integrated with the support member in the same manner. The two arm members also move in the direction opposite to the hub, and the protrusions provided on the two arm members are engaged with the engaging portions of the wheel center bore (center hole), but the two integrated with the support member The two arm members have the required strength, and the wheel can be pulled out without slipping between the protrusion and the engaging portion, deformation of the protrusion, or the like.

Moreover, the extraction tool of one Embodiment is provided with the screwing hole part between the through-hole for engaging with the supporting member of two arm members with the engaging screws 5 and 6, and a projection part. It is characterized by.

According to the extraction tool of the above embodiment, the wheel center bore (center hole) has a different diameter and shape depending on the manufacturer and product type, and the engagement portion may be small. In such a case, a screw or a bolt is screwed into and penetrated through the screw hole portions of the two arm members and protruded from the support member. Then, by generating a gap between the support member and the two arm members, the distance between the protrusion tip portions of the two arm members can be enlarged and adjusted.

As is clear from the above, according to the pulling tool of the present invention, a pulling tool capable of efficiently and safely performing a pulling operation of an object to be pulled fixed to the hub at the axle end with a simple configuration. Can be realized.

Hereinafter, this extraction tool will be described in detail with reference to the illustrated embodiment.

FIG. 1 shows a perspective view of a drawing tool according to an embodiment of the present invention.
This extraction tool engages two arm members 3 and 4 engaged so as to be hooked to the support member 1 and both the hook portions 3a and 4a of the hooking surface 1e. The engaging screws 5 and 6 and the pressing member 2 screwed so as to penetrate from the center of the retaining surface 1e of the supporting member 1 to the opposite surface are provided.

The support member 1 is provided with 1a and 1b (shown in FIG. 2) that are threaded through in order to engage the two arm members 3 and 4.

In addition, the vertical and horizontal lengths of the retaining surface 1e of the support member 1 are such that when the support member 1 and the two arm members 3 and 4 are integrated with each other, the protrusions of the two arm members 3 and 4 are located at the tip ends. The distances are different lengths so that the distance can be changed according to the diameter and shape of the wheel center bore (center hole).

FIG. 2 shows a perspective view in which the two arm members 3 and 4 of the extraction tool are engaged and disengaged from the support member 1.
The two arm members 3 and 4 are provided with through holes 3c and 4c between the through holes for engaging the support member 1 with the engagement screws 5 and 6 and the projections 3b and 4b. .
If a screw or a bolt is screwed and penetrated into the screw holes 3c and 4c and protruded from the support member, a gap can be generated between the support member 1 and the two arm members 3 and 4. As a result, the distance between the projecting tips of the two arm members 3 and 4 can be enlarged and adjusted.

FIG. 3 shows a side view of the extraction tool, and FIG. 4 shows a top view of the extraction tool.

The drawing operation of the wheel center center bore (center hole) fixed to the hub 21 at the axle end with the above drawing tool will be described with reference to FIG.

First, FIG. 5 shows a cross-sectional view of the hub 21 and the wheel (aluminum) 22 at the axle end.

In FIG. 5, the hub 21 and the center bore (the center hole) of the wheel (made of aluminum) 22 are fitted so that the gap is more closely attached, and rainwater and snow melting agent are placed between the two narrow parts. The contained snow melting water enters, and heat is transmitted by the brake, and rust is generated due to the difference in the materials of the two parts.

Therefore, first, as shown in FIG. 5, the two arm members 3 and 4 of the drawing tool of the present embodiment are arranged at positions where the wheel center bore (center hole) is engaged.
Next, the pressing member 2 and the supporting member 1 screwed so as to penetrate from the central portion of the retaining surface 1e of the supporting member 1 are arranged between the two arm members 3 and 4, and the supporting member 1 is latched. The surface 1e and the latching portions 3a and 4a of the two arm members 3 and 4 are brought into close contact with each other.
Next, the engagement screws 5 and 6 for engaging the respective arm members and the support member 1 are passed through the arm members and screwed into the engagement screw holes 1b on both side surfaces of the support member 1, so that the wheel center bore (the center hole portion) is engaged. ) Integrated within.

In this state, the connecting portion 2a of the pressing member 2 is rotated by a wrench or the like and the shaft portion 2b is screwed in, so that the pressing portion 2c reaches the hub 21 at the end of the axle that is fixed.
When the screwing is further advanced, the shaft portion 2b moves the support member 1 in a direction away from the hub 21, and at the same time, the projection portions 3b and 4b of the arm members 3 and 4 integrated with the support member 1 have a wheel center bore (center). A pressure in the direction of peeling from the fixed hub 21 is applied to the engaging portion of the hole), and the wheel (aluminum) 22 is separated and separated.

Thus, according to the extraction tool of the above-described embodiment, the extraction tool that can efficiently and safely perform the extraction operation of the object to be extracted fixed to the hub 21 at the axle end with a simple configuration. Can be realized.

Although the rectangular parallelepiped shape is used for the support member 1 in the above embodiment, the same effect can be obtained with other shapes.
When the support member 1 is a cylinder, if the surfaces of the two arm members 3 and 4 that are in contact with the support member 1 are hollowed out in a semi-cylindrical shape so as to match the cylinder, the inside of the wheel center bore (center hole) Integration becomes easy. In addition, when the support member 1 is a triangular prism, three arm members can be arranged, and a more stable extraction operation can be performed.
Further, when the support member 1 is a hexagonal column, the rectangular parallelepiped has two types of lengths of the latching surface 1e, that is, the length corresponding to the two sizes of the wheel center bore (center hole). It becomes possible to increase to three types.
Even if it is an octagonal column or more, it may be similarly increased to 4 types.

In the above embodiment, the hooking surface 1e of the support member 1 and the hooking portions 3a and 4a of the two arm members 3 and 4 are brought into close contact with each other with the engaging screws 5 and 6, For example, a convex shape is provided at a position where the latching portions 3a, 4a of the two arm members 3, 4 of the latching surface 1e are latched, and the latching portions 3a, 4a of the two arm members 3, 4 are recessed. If a structure that can be hooked by providing a portion is provided, the shaft portion 2b of the pressing member 2 can be screwed even without the engagement screws 5 and 6 for engaging the respective arm members and the support member 1. When the shaft portion 2b moves the support member away from the hub 21, the wheel center bore (to the projections 3b, 4b of the two arm members 3, 4 temporarily integrated with the support member 1 at the same time) The pressure in the direction of peeling from the hub firmly attached to the engaging part of the center hole) It may have a structure for engaging at irregular portion by utilizing the applied force.

Further, in the above embodiment, the central portion of the hub 21 with which the pressing portion 2c of the pressing member 2 contacts is flat, but depending on the vehicle type and the specification of the front wheel rear wheel, the center portion of the hub 21 may have a tip end of a bolt, Bolt heads may be assembled. (Exemplified by broken line in FIG. 7)
When the front end portion of the bolt assembled at the center portion of the hub 21 is long, the surface opposite to the hooking surface 1e of the support member 1 and the pressing portion 2c of the pressing member 2 are assembled at the center portion of the hub 21. It is conceivable that the two arm members 3 and 4 and the support member 1 cannot be engaged with each other due to contact with the tip of the bolt. In this case, the distance between the hooking surface 1e of the support member 1 and the opposite surface is shortened and shortened so that the tip of the bolt assembled at the center of the hub 21 and the hooking surface 1e of the support member 1 Avoid contact with the other side of the.

Further, in the form in which the front end portion of the bolt is assembled to the central portion of the hub 21, the two arm members 3, 4 are attached to the retaining surface 1 e of the support member 1 when the central portion of the hub 21 is flat. Without using the method in which the latching portions 3a and 4a are brought into close contact with each other, a plurality of concave shapes are provided on both side surfaces of the support member 1, and the latching portions 3a and 4a of the two arm members 3 and 4 are provided in stages. Alternatively, the same effect may be obtained by changing the position and hooking the concave shape portion on both side surfaces of the support member 1.

Further, in the above embodiment, the two arm members having the shape of the protrusions on the support member 1 are hooked to the hook portion of the wheel center bore (center hole) as a single unit. Alternatively, the protrusions may be protruded and engaged by the screw mechanism or the like from the side surface of the arm member.

Further, in the above embodiment, the pressing portion 2c of the pressing member 2 has a sharp tip at the tip. This is because the central portion of the hub 21 is flat and the central portion of the hub 21 is bolted. In the form in which the tip and head are assembled, the shape is such that the tip of the bolt and the head of the bolt can be reliably pressed.
If the central portion of the hub 21 is only a flat surface, the tip portion of the pressing portion 2c may be flat.

6 and 7 are sectional views showing the shape of the wheel 23 made of steel.
Since the shape of the steel wheel 23 (made of steel) is made from a single metal plate, there is almost no engagement part as in the wheel 22 (made of aluminum) in FIG. is there.
Therefore, in FIG. 6, a peripheral hole 24 is provided in the wheel center bore (center hole portion) as a hook portion, and in FIG. 7, the shape of the throttle portion 25 is provided as a hook portion.
Providing a pulling tool that can perform the pulling work efficiently, safely and in a short time by the pulling tool of the above embodiment even if it is a wheel 23 (made of steel) by providing the above-described engaging portion. Can do.

FIG. 1 is a perspective view of a drawing tool according to an embodiment of the present invention. FIG. 2 is a perspective view in which the two arm members of the extraction tool are engaged and disengaged from the support member. FIG. 3 is a side view of the extraction tool. FIG. 4 is a top view of the drawing tool. FIG. 5 is a view showing a state in which a drawing tool is attached to a cross-sectional view of a wheel (made of aluminum) fixed to a hub at an axle end. FIG. 6 is a cross-sectional view showing a peripheral hole for engaging a projection of an arm member of a drawing tool with a wheel (made of steel) fixed to a hub at an axle end. FIG. 7 is a cross-sectional view showing a throttle portion for engaging a projection of an arm member of a drawing tool with a wheel (steel) fixed to a hub at an axle end portion, and a tip end portion (dashed line portion) of a bolt at a central portion of the hub. It is the figure which illustrated the assembled | attached form.

1 ... Support members 1a, 1b ... Engagement screw holes 1e ... Stopping surface 2 ... Press member 2a ... Connection 2b ... Shaft 2c ... Pressing portions 3, 4... Arm members 3a, 4a .. latching portions 3b, 4b .. projections 3c, 4c .. screw holes 5, 6. ..Wheel (aluminum)
23 ... Wheel (steel)
24 ... Circumferential hole 25 ... Restriction part [Fig.1] [Fig.2] [Fig.3] [Fig.4] [Fig.5] [Fig.6] [Fig.7]

Claims (6)

Two arm members arranged at positions where the wheel center bore (center hole) in a state of being fixed to the hub at the axle end is engaged;
A support member in which the end of the hooking surface of the support member is hooked to the hook portion of the two arm members;
A pressing member screwed so as to penetrate from the center of the hooking surface of the support member;
With engagement screws for engaging the two arm members on both side surfaces of the support member,
Extraction tool characterized by being integrated in the wheel center bore (center hole). The extraction tool according to claim 1,
When pressure is applied to the hooking portion of the object to be pulled out by the protrusions of the two arm members, the two arm members are in a substantially target position with respect to the shaft of the shaft portion of the pressing member. Extraction tool. The extraction tool according to claim 1 or 2,
A pulling tool, wherein the hooking surface of the support member and the hooking portions of the two arm members are in close contact with each other. In the extraction tool as described in any one of Claims 1 thru | or 3,
A pulling tool, wherein the engagement screw is a screw that can be turned by hand. In the extraction tool as described in any one of Claims 1 thru | or 4,
The extraction tool according to claim 1, wherein a direction of a surface on which the protrusions provided on the two arm members engage is not a surface arranged in a direction perpendicular to the shaft portion of the pressing member. 6. The extraction tool according to claim 1, wherein a screw hole portion is provided between the through hole and the protrusion portion for engaging the two arm members with the side surface of the support member with an engagement screw. A drawing tool characterized in that is provided.

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