JP2004130481A - Toe adjusting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform work such as fastening of a nut, and to reduce load on a worker. <P>SOLUTION: This toe adjusting apparatus 10 comprises a first socket 61 for rotating an adjust nut 46, and a second socket 64 that is joined to a marketed nut runner and is rotatably mounted to the first socket 61 for rotating a lock nut 47. Since the second socket for rotating the lock nut is joined to the nut runner, the lock nut is rotated using power of the nut runner, fastening or loosing work of the lock nut is efficiently performed, and the load on the worker is reduced. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a toe adjusting device capable of efficiently performing operations such as nut tightening and reducing the burden on an operator.
[0002]
[Prior art]
A bolt / nut tightening tool that turns both a bolt and a nut to be screw-coupled to the bolt, or holds one so that it does not turn, and turns the other like a toe adjusting device that adjusts the toe angle of a wheel is known. (For example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 7-18013 (pages 5-7, FIGS. 1-3)
[0004]
FIG. 1 of Patent Document 1 will be described with reference to FIG. The reference numerals have been re-assigned.
FIG. 12 is a sectional view showing a conventional bolt and nut tightening tool. An attachment 203 having a hexagonal protrusion fitting hole 202 is attached to a bolt fixing tool 201 so as to be movable in the axial direction. Fig. 2 shows a structure in which an attachment 206 having a hexagonal nut fitting hole 205 is integrally attached thereto, and a nut fastener 204 is rotatably attached to the bolt fixing tool 201 described above.
[0005]
FIG. 2 of Patent Document 1 will be described with reference to FIG. The reference numerals have been re-assigned.
FIG. 13 is a perspective view showing a conventional bolt / nut tightening tool, in which a handle is provided for each of the bolt fastener 201 and the nut fastener 204, the bolt fastener 201 is held at that position, and the nut fastener 204 is moved in the direction of the arrow. Shows the reciprocation of rotation.
[0006]
FIG. 3 of Patent Document 1 will be described with reference to FIG. The reference numerals have been re-assigned.
14A and 14B are side views of a conventional bolt, and FIG. 14A shows a bolt 213 having a hexagonal head 211 at one end and a hexagonal protrusion 212 at the other end.
FIG. 14B shows a bolt 217 having a hexagonal head 215 at one end and a hexagonal recess 216 at the other end.
In FIG. 14A, the protrusion 212 is inserted into the protrusion fitting hole 202 on the bolt fixing tool 201 side shown in FIG. 12, and the nut screw-connected to the bolt 213 fits the nut fitting on the nut tightening tool 204 shown in FIG. The nut can be tightened by rotating the nut with the nut tightening tool 204 in a state in which the fitting of the protrusion 212 is stopped by the bolt fixing tool 201, that is, the rotation of the bolt 213 is stopped.
[0007]
[Problems to be solved by the invention]
In the above-mentioned bolt / nut tightening tool, the bolt fixing tool 201 is held with one hand, and the nut tightening tool 204 is reciprocated with the other hand. This means spending time and increasing the burden on the worker. If the nut can be tightened using an external power, the work can be performed efficiently and the burden on the operator can be reduced.
[0008]
Therefore, an object of the present invention is to improve the toe adjusting device so that operations such as nut tightening can be performed efficiently, and furthermore, the burden on the operator is reduced.
[0009]
[Means for Solving the Problems]
To achieve the above object, claim 1 is a toe adjusting device in which a toe angle of a wheel is adjusted by turning an adjust nut, and the adjust nut is prevented from loosening by a lock nut. , A first socket for turning an adjustment nut, and a second socket rotatably mounted on the first socket so as to be connectable to the nut runner and to rotate the lock nut.
[0010]
Since the second socket for turning the lock nut can be connected to the nut runner, the lock nut can be turned using the power of the nut runner, and the work of tightening and loosening the lock nut can be performed efficiently. The burden on the worker can be reduced.
[0011]
According to a second aspect of the present invention, the second socket is connected to the nut runner via an extension bar, and the first socket is provided with a handle for turning by hand on an outer peripheral portion, and the second socket and the extension bar are arranged inside the first socket. It is characterized by being slidable on the bar.
[0012]
By turning the handle attached to the first socket, the adjust nut can be turned to adjust to a desired toe angle.
Further, since the first socket is slidable on the extension bar, the first socket can be moved in accordance with the positional relationship between the adjustment nut and the lock nut, and the first socket is securely engaged with the adjustment nut. be able to.
[0013]
According to a third aspect of the present invention, the nut runner is provided with an attachment for connecting the extension bar.
The attachment allows the general-purpose nut runner to be securely connected to the extension bar.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.
FIG. 1 is a perspective view showing a use state of a toe adjustment device according to the present invention. The toe adjustment device 10 is applied to a jack-up wheel of a vehicle 11, here, a toe angle adjustment mechanism of a rear wheel 12. 10 shows a state in which a nut runner 14 is connected to the rear portion of the nut 10 via an attachment 13.
[0015]
The toe adjusting device 10 can rotate an adjust nut for adjusting the toe angle with a socket provided in the outer cylinder 21 and a lock nut for preventing the adjust nut from rotating with another socket provided in the outer cylinder 21. Device.
Here, 25 is a handle for manually turning the outer cylinder 21, 26 is an arm extending from the vehicle body side of the vehicle 11 to support the rear wheel 12, and 27 is a muffler.
[0016]
FIG. 2 is a perspective view showing a toe adjusting mechanism of a vehicle to which the toe adjusting device according to the present invention is applied. This shows that the axle is mounted on the knuckle 33, the hub is rotatably mounted on the axle, the rear wheel 12 is mounted on the hub, and the toe adjustment mechanism 34 is provided on the knuckle support 32 on the rear side.
Here, reference numeral 37 denotes a shock absorber attached to the arm 26 and the vehicle body side, and reference numeral 38 denotes a drum brake brake panel integrally attached to the knuckle 33.
[0017]
3A and 3B are explanatory views showing a toe adjusting mechanism according to the present invention.
FIG. 3A is a sectional view taken along line 3-3 in FIG. 2. The toe adjustment mechanism 34 includes cam receiving portions 43, 43 mounted on both side surfaces of a bracket 42 mounted on the arm 26, and the brackets 42 and the cam receiving portions. The toe adjustment bolt 44 penetrating the parts 43, 43, the adjust nut 46 integrally fitted to the end side of the toe adjustment bolt 44, and the male thread 44 a formed at the tip of the toe adjustment bolt 44 A lock nut 47 is screwed in to prevent the adjustment nut 46 from rotating.
[0018]
The knuckle support portion 32 is a portion composed of the bracket 42, the toe adjustment bolt 44, and the lock nut 47, and the knuckle 33 is attached to the toe adjustment bolt 44.
[0019]
In FIG. 2, the knuckle support portion 31 includes a bracket 51 attached to the arm 26, a bolt (not shown) penetrated through the bracket 51, and a nut member 52 attached to an end of the bolt. A knuckle 33 is attached to a bolt.
[0020]
Returning to FIG. 3A, the toe adjusting bolt 44 is a member in which the cam portion 44b is provided on a hexagonal head portion 44c, and the peripheral surface of the cam portion 44b is formed to be raised on one cam receiving portion 43. It hits the protruding part 43a.
The adjust nut 46 is a member having a cam portion 46a provided at one end, and a peripheral surface of the cam portion 46a is brought into contact with a protruding portion 43b formed by being raised on the other cam receiving portion 43.
[0021]
In (b), two flat portions 44e and 44f parallel to the outer peripheral surface of the end portion of the shaft portion 44d of the toe adjusting bolt 44 are formed. On the other hand, a through hole 46b is opened in the adjustment nut 46, and the through hole 46b is formed. This shows that the flat nuts 46c and 46d are formed on the inner peripheral surface so that the adjust nut 46 can be integrally fitted to the end of the toe adjustment bolt 44.
[0022]
4A to 4E are explanatory views showing the toe adjusting device according to the present invention, wherein FIG. 4A is a longitudinal sectional view, FIG. 4B is a sectional view taken along the line bb of FIG. 3A is a cross-sectional view taken along line cc of FIG. 4A, FIG. 4D is a cross-sectional view taken along line dd of FIG. 4A, and FIG.
The toe adjusting device 10 includes the above-described outer cylinder 21, a first socket 61 integrally attached to the tip of the outer cylinder 21, an inner cylinder 63 attached to the inside of the outer cylinder 21 with screws 62, 62, A second socket 64 movably inserted into the cylinder 21, an extension bar 66 having a tip fitted to an end of the second socket 64, and the above-described handle 25 attached to the outer peripheral surface of the outer cylinder 21. Become.
[0023]
The first socket 61 is a member for turning the adjustment nut 46 of the toe adjustment mechanism 34 shown in FIG. 3A, and also turns the toe adjustment bolt 44 via the adjustment nut 46.
[0024]
4A, the first socket 61 can be rotated by rotating the outer cylinder 21 with the handle 25 using the extension bar 66 as a rotation axis.
The inner cylinder 63 is a member that functions as a bush when the outer cylinder 21 rotates with respect to the extension bar 66.
[0025]
The second socket 64 is a member for turning the lock nut 47 shown in FIG. 3A. In FIG. 4A, the second socket 64 is commonly used via the extension bar 66 and the attachment 13 (see FIG. 1). (See FIG. 1).
[0026]
In (b), the extension bar 66 has a rectangular recess 66a at one end and pin holes 66b, 66b penetrating from the rectangular recess 66a to the outer peripheral surface, and fits the end of the attachment 13 (see FIG. 1) into the rectangular recess 66a. A pin (not shown) is passed through the extension bar 66 in the fitted state and the end of the attachment 13 through the pin holes 66b, 66b so that the connection between the extension bar 66 and the end of the attachment 13 does not come off. To
[0027]
In (c), the second socket 64 is a member having a rectangular hole 64a formed at an end, the extension bar 66 is a member having a rectangular cross-section 66c formed at the other end, and a rectangular cross-section 66c is formed at the rectangular hole 64a. Fit.
[0028]
In (d), the second socket 64 is a member in which a socket body 64b having a hexagonal hole at the tip is formed.
In (e), the first socket 61 is a member formed with a polygonal hole 61a that fits into a hexagonal adjustment nut 46 (see FIG. 3B).
[0029]
5A and 5B are explanatory views of an attachment attached to the toe adjusting device according to the present invention, wherein FIG. 5A is a longitudinal sectional view, and FIG. 5B is a sectional view taken along line bb of FIG. is there.
7A, the attachment 13 includes a bearing 71, a shaft member 74 rotatably fitted to the bearing 71 via bushes 72, 73, and a case 76 attached to the bearing 71 so as to be able to swing up and down. Consists of
[0030]
The shaft member 74 includes a rectangular fitting portion 74a formed at one end for fitting to the extension bar 66 (see FIG. 4A), a flange portion 74b provided at the other end, and a hexagonal head portion 74c. This is a member in which a retaining ring 77 is used to prevent the bearing ring 71 from coming off.
The head 74c is a part that is connected to the nut runner 14 (see FIG. 1). Reference numeral 78 denotes a spring that generates an elastic force in a direction in which the head 74c side of the shaft member 74 is separated from the bearing 71.
[0031]
The case 76 includes side walls 81, 81 (only the rear side wall 81 is shown), an upper end wall 82 attached to the upper end of the side walls 81, 81, and the upper side walls 81, 81 and the upper end. And a rear wall 83 attached to the rear of the wall 82.
[0032]
(B), female threads 71a, 71a are formed on both sides of the bearing 71, and a bolt 85 is screwed into each of the female threads 71a, 71a. The case 76 is attached to the bearing 71 so as to be able to swing by fitting into the lateral holes 81a, 81a opened in the side walls 81, 81, respectively.
[0033]
Next, the procedure for mounting the attachment 13 to the nut runner 14 described above will be described.
6 (a) and 6 (b) are action diagrams showing how to attach the attachment according to the present invention.
3A, a concave portion (not shown) provided at the end of the nut runner 14 is fitted into the head 74c of the shaft member 74 in a state where the case 76 of the attachment 13 is swung upward. The member 74 is pressed in the direction of arrow (1) against the elastic force of the spring 78, and then the case 76 is folded down to cover the nut runner 14 as shown by arrow (2).
[0034]
(B) is a state where the attachment 13 is attached to the nut runner 14.
The head 74c of the shaft member 74 fits into the recess 14b of the connecting portion 14a provided at the end of the nut runner 14, and the spring 78 presses the head 74c against the connecting portion 14a. There is no worry about disengagement.
[0035]
The connecting portion 14a of the nut runner 14 is a portion connected to a power source via a power transmission mechanism (not shown), and can transmit the rotational force of the connecting portion 14a to the shaft member 74.
The concave portion 14b of the connecting portion 14a is a hexagonal concave portion that can be connected to a general tool, for example, a space between two opposing surfaces is 17 mm.
[0036]
The operation of the toe adjusting device 10 described above will now be described.
FIG. 7 is a first operation view showing the operation of the toe adjusting device according to the present invention, and shows a state in which the toe adjusting device 10 is applied to the toe adjusting mechanism 34 on the vehicle side.
That is, the first socket 61 is fitted to the adjustment nut 46, and the second socket 64 is fitted to the lock nut 47.
The shaft member 74 of the attachment 13 to which the nut runner is mounted is connected to the extension bar 66 of the toe adjusting device 10.
[0037]
FIG. 8 is a second operation diagram showing the operation of the toe adjusting device according to the present invention. First, the nut runner is operated to turn the shaft member 74 of the attachment in the direction of the arrow, and the second socket 64 is extended via the extension bar 66. Turning the. Thereby, the lock nut 47 is loosened by the second socket 64.
[0038]
FIG. 9 is a third operation diagram showing the operation of the toe adjusting device according to the present invention. Next, the outer cylinder 21 is turned by hand to turn the first socket 61. Thus, the adjust nut 46 is turned by the second socket 61 by a predetermined angle. At this time, the toe adjustment bolt 44 also rotates.
[0039]
FIGS. 10A and 10B are fourth operation diagrams showing the operation of the toe adjusting device according to the present invention. In FIG. 10A, when the adjustment nut 46 (and the toe adjustment bolt) is turned, the adjustment nut 46 side is set. The cam portion 46a (and the cam portion on the toe adjusting bolt side) of the cam receiving portion 43 rotates while sliding with the protruding portion 43b (and the protruding portion 43a) of the cam receiving portion 43. Since the cam portion 46a is eccentric with respect to the rotation center of the adjustment nut 46, for example, when the point 88 on the outer peripheral portion of the cam portion 46a moves to the point 89, the distance L1 from the rotation center point 90 to the point 88 is Since the distance L2 (L2> L1) from the center point 90 to the point 89 is different, the adjust nut 46 (and the toe adjustment bolt) moves to the left in the drawing. (91 is the center point of rotation of the adjust nut 46 after the adjust nut 46 has moved.)
When the adjustment nut 46 (and the toe adjustment bolt) moves, the knuckle 33 moves to the left in the drawing by the distance L3. That is, L3 = L2-L1.
[0040]
In FIG. 7B, assuming that the front of the vehicle is in the direction of the arrow (front) and the left and right rear wheels are rear wheels 12L and 12R for convenience of explanation, the left toe adjustment mechanism 34 is shown in FIGS. By adjusting the rear wheel 12L, the rear portion of the rear wheel 12L can be tilted in the direction of the arrow around the knuckle support 31 and the toe angle θ of the rear wheel 12L can be adjusted. Similarly, using the toe adjusting device, the toe adjusting mechanism 34 on the right side also adjusts the toe angle θ of the rear wheel 12R.
[0041]
The width center line of the rear wheel 12L is 93, the intersection of the width center line 93 with the front end and the rear end of the rear wheel 12L is 94, 95, the width center line of the rear wheel 12R is 97, and the width center line 97 is Assuming that the intersection between the front end and the rear end of the wheel 12R is 98, 99, the distance in the vehicle width direction between the intersection 94 and the intersection 98 is L4, and the distance in the vehicle width direction between the intersection 95 and the intersection 99 is L5, (L5 −L4) is a toe-in, and by adjusting the toe angle θ, the toe-in can be adjusted within a predetermined range.
[0042]
As described above with reference to FIGS. 7 and 10 (b), the present invention firstly adjusts the toe angle θ of the wheel, for example, the rear wheel 12 (see FIG. 2) by turning the adjustment nut 46 to lock the wheel. In the toe adjusting device 10 in which the nut 47 is tightened to prevent the adjusting nut 46 from being loosened, the toe adjusting device 10 includes the first socket 61 for turning the adjusting nut 46, and the nut runner 14 (see FIG. 6B). And a second socket 64 rotatably mounted on the first socket 61 for turning the lock nut 47.
[0043]
Since the second socket 64 for turning the lock nut 47 can be connected to the nut runner 14, the lock nut 47 can be turned using the power of the nut runner 14, and the work of tightening and loosening the lock nut 47 is performed efficiently. And the burden on the operator can be reduced.
[0044]
Secondly, according to the present invention, the second socket 64 is connected to the nut runner 14 via an extension bar 66, and the first socket 61 is provided with a handle 25 for turning on the outer peripheral portion (see FIG. 4A). It is characterized in that the second socket 64 and the extension bar 66 are arranged on the inside and are slidable with respect to the extension bar 66.
[0045]
By turning the handle 25 attached to the first socket 61 by hand, the adjust nut 46 can be turned to adjust the toe angle θ to a desired value.
Further, since the first socket 61 is slidable on the extension bar 66, the first socket 61 can be moved with respect to the second socket 64 in accordance with the positional relationship between the adjustment nut 46 and the lock nut 47 which differs depending on the vehicle type. Thus, the first socket 61 can be securely engaged with the adjustment nut 46.
[0046]
Third, the present invention is characterized in that the nut runner 14 is provided with an attachment 13 for connecting the extension bar 66, as shown in FIGS. 4 (a), 6 (a) and 6 (b). .
The attachment 13 allows the general-purpose nut runner 14 to be reliably connected to the extension bar 66.
[0047]
FIG. 11 is an explanatory view showing an impact wrench connected to the toe adjusting device according to the present invention, and shows an example in which an impact wrench 102 is connected to the toe adjusting device 10 and the second socket 64 is driven by the impact wrench 102.
[0048]
The impact wrench 102 supplies compressed air from the air intake port 103, and shock-relaxes or tightens the lock nut 47 (see FIG. 3A) via the extension bar 66 and the second socket 64. By driving the toe adjusting device 10 with such an impact wrench 102, the workability at the time of toe adjusting in a narrow space can be further improved because of the small size.
[0049]
【The invention's effect】
The present invention has the following effects by the above configuration.
The toe adjusting device according to the first aspect includes a first socket for turning an adjust nut, and a second socket connectable to a nut runner and rotatably mounted on the first socket for turning a lock nut. Since the second socket for turning the lock nut can be connected to the nut runner, the lock nut can be turned using the power of the nut runner, and the work of tightening and loosening the lock nut can be performed efficiently. And the burden on the operator can be reduced.
[0050]
In the toe adjusting device according to the second aspect, the second socket is connected to the nut runner via an extension bar, and the first socket is provided with a handle for turning by hand on the outer peripheral portion, and the second socket and the extension bar are provided inside. Since it is arranged and slidable with respect to the extension bar, by turning the handle attached to the first socket by hand, the adjust nut can be turned to adjust to a desired toe angle.
[0051]
In addition, since the first socket is slidable on the extension bar, the first socket can be moved with respect to the second socket according to the positional relationship between the adjustment nut and the lock nut that differs depending on the vehicle type. The first socket can be reliably engaged.
[0052]
In the toe adjusting device according to the third aspect, since the nut runner is provided with an attachment for connecting the extension bar, the general-purpose nut runner can be reliably connected to the extension bar by the attachment.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of a toe adjusting device according to the present invention; FIG. 2 is a perspective view showing a toe adjusting portion of a vehicle to which the toe adjusting device according to the present invention is attached; FIG. FIG. 4 is an explanatory view showing an adjusting mechanism. FIG. 4 is an explanatory view showing a toe adjusting device according to the present invention. FIG. 5 is an explanatory view showing an attachment attached to the toe adjusting device according to the present invention. FIG. 7 is a first operation diagram showing the operation of the toe adjusting device according to the present invention. FIG. 8 is a second operational diagram showing the operation of the toe adjusting device according to the present invention. FIG. 10 is a third operational view showing the operation of the toe adjusting device according to the present invention. FIG. 10 is a fourth operational diagram showing the operation of the toe adjusting device according to the present invention. FIG. 11 is an illustration showing an impact wrench connected to the toe adjusting device according to the present invention. Fig. 12 shows a conventional bolt and nut tightening tool Sectional view and FIG. 13 is a perspective view showing a conventional bolt and nut tightening tool 14 is a side view of a conventional bolt EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 10 ... Toe adjusting device, 12, 12L, 12R ... Wheel (rear wheel), 13 ... Attachment, 14 ... Nut runner, 25 ... Handle, 46 ... Adjust nut, 47 ... Lock nut, 61 ... First socket, 64 ... Second Socket, 66: Extension bar, θ: Toe angle.

Claims (3)

In the toe adjustment device that adjusts the toe angle of the wheel by turning the adjust nut, and locks this adjust nut with a lock nut,
The toe adjusting device comprises a first socket for turning the adjust nut, and a second socket connectable to a nut runner and rotatably attached to the first socket for turning the lock nut. Toe adjustment device. The second socket is connected to the nut runner via an extension bar, and the first socket is provided with a handle for turning by hand on an outer peripheral portion, and the second socket and the extension bar are disposed inside and the first socket is connected to the extension bar. The toe adjusting device according to claim 1, wherein the device is slidable. The toe adjusting device according to claim 2, wherein an attachment for connecting the extension bar is provided on the nut runner.

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