JP2511030Y2 - Rear wheel neutral lock device mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention has a lock lever fixed to a knuckle that rotates around a kingpin of a four-wheel steering vehicle and a lock actuator fixed to an axle housing. The present invention relates to a mounting structure for a rear wheel neutral lock device that selectively locks the lock lever at a neutral position by a lock actuator.

[Prior Art] Various four-wheel steering vehicles are known (for example, JP-A-57-175).
In Japanese Patent Application No. 63-18478 (see Japanese Utility Model Laid-Open No. 1-123973), the present applicant proposes a rear wheel neutral lock that is easy to lock and unlock.

An example of a conventional rear wheel neutral lock device and its mounting structure will be described with reference to FIG. 5. At the top of the knuckle 2 that rotates around the kingpin 1, there is a lock lever 3 that extends downward inwardly. It is fixed by bolts.

On the other hand, the upper spring seat 5 and the lower spring seat 6 are welded to the upper surface and the lower surface of the axle housing 4, respectively, and the suspension spring 8 is sandwiched between the lower surface of the lower spring seat 6 and the pad 7. U bolt 9 hung between the spring seat 5 and the pad 7, and a nut screwed to the U bolt 9
It is fixed by tightening with 10.

On the upper surface of the upper spring seat 5, a lock actuator bracket 11 is attached by a U bolt 9 to the seat 5
It is fixed together with. The lock actuator bracket 11 is formed with a mounting surface 12 which is inclined inward toward the upper side, and the lock actuator 15 is mounted on the mounting surface 12 with bolts 14
Installed by.

[Problems to be Solved by the Invention] In the conventional mounting structure using U-bolts 9, the actuator bracket 11 is positioned during assembly, so the assembly time becomes longer.
Since 11 does not come to a predetermined position, there are problems that positioning cannot be reliably performed with respect to design dimensions, the number of parts is large, and the management man-hour is large.

Therefore, an object of the present invention is to provide a mounting structure for a rear wheel neutral lock device which is accurate in positioning, has a small number of parts, and can reduce the number of steps.

[Means for Solving the Problems] According to the present invention, the lock lever (3) is fixed to the knuckle (2) that rotates around the kingpin (1), and
Lock actuator (1) on axle housing (4)
In a mounting structure of a rear wheel neutral lock device in which the lock actuator (15) is fixed and the lock lever (3) is selectively locked to a neutral position by the lock actuator (15), an upper spring seat is provided on an upper surface of the axle housing (4). The actuator bracket (20) which also serves as a welder is welded, the lock actuator (15) is attached to the actuator bracket (20) by the bolt (14), and the axle housing (4) is attached to the actuator bracket (20).
A fitting groove (21) for accommodating the U-bolt (9) and a recess (22) are formed at both ends which are parallel to the upper surfaces of both sides parallel to the axis line of the axle housing (4). A mounting portion (23) is erected at a substantially central portion of the actuator bracket orthogonal to the axis line of the mounting bracket (23), and the mounting surface (2) is inclined upward inward.
4) is formed, and a bolt hole (25) for mounting the lock actuator (15) is formed on the mounting surface.

[Explanation of action and effect] Therefore, when assembling the lock actuator,
First, position and weld the actuator bracket to the upper surface of the axle housing. Therefore, the actuator bracket is in the correct position with respect to the axle housing. Then, the lock actuator is attached to the bolt on the attachment surface of the actuator bracket.

In this way, the actuator is automatically and accurately positioned and attached to the axle housing and lock lever. Further, since the actuator bracket also serves as the upper spring seat, the work of attaching it to the axle housing becomes easy.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. In addition, regarding the portion corresponding to FIG. 5 in FIG.
The same reference numerals are given and duplicate description is omitted.

In FIG. 1, on the upper surface of the axle housing 4,
An actuator bracket 20 also serving as an upper spring seat is welded, and a lock actuator 15 is attached to the bracket 20 with a bolt 14.

2 to 4, the bracket 20 has fitting grooves 21 and 22 for accommodating the U bolt 9 and recesses 2 for accommodating the U bolts 9 at both end portions orthogonal to the upper surfaces of both side portions parallel to the axis of the axle housing 4.
2, 22 are formed. A mounting portion 23 is erected at a substantially central portion of the bracket 20 orthogonal to the axis of the axle housing 4, and the mounting portion 23 has a mounting surface 24 that is inclined inward toward the upper side. . Further, the mounting surface 24 is provided with four bolt holes 25 for the bolts 14.

When the lock actuator 15 is assembled, the actuator bracket 20 is positioned and welded to the upper surface of the axle housing 4, and the lock actuator 15 is attached to the mounting surface 24 of the bracket 20 with the four bolts 14. Positioning with respect to 4, i.e. with respect to the lock lever 3, is automatic and accurate and easy.

[Effects of the Invention] As described above, according to the present invention, the following excellent effects can be obtained.

(I) The lock actuator can be accurately and easily positioned simply by mounting the lock actuator on the actuator bracket with bolts.

(Ii) Since the actuator bracket also serves as the upper spring seat, it can be easily attached to the axle housing.

(Iii) Assembly man-hours are reduced, the number of parts is small, and management man-hours are reduced.

(Iv) Since the positioning of the lock actuator is accurate,
The neutral position of the rear wheel is accurate.

[Brief description of drawings]

FIG. 1 is a front view showing an assembled state of one embodiment of the present invention, FIGS. 2, 3, and 4 are front views, side views and top views showing an actuator bracket, and FIG. 5 is a conventional structure. 2 is a drawing corresponding to FIG. 2 ... Knuckle, 3 ... Lock plate, 4 ... Axle housing, 15 ... Lock actuator, 20 ... Actuator bracket, 21 ... Mating groove, 23 ... Mounting part, 24 ... Mounting surface

Claims (1)

(57) [Scope of utility model registration request] 1. A lock lever (3) is fixed to a knuckle (2) which rotates around a kingpin (1), and a lock actuator (15) is fixed to an axle housing (4). In the mounting structure of the rear wheel neutral locking device for selectively locking the lock lever (3) to the neutral position by means of 15), the actuator bracket (20) also serving as the upper spring seat is welded to the upper surface of the axle housing (4). , A lock actuator (15) is attached to the actuator bracket (20) by a bolt (14), and the actuator bracket (20) has U at both ends orthogonal to the upper surfaces of both sides parallel to the axis of the axle housing (4). A fitting groove (21) for accommodating the bolt (9) and a recess (22) are formed, and the actuator bracket is further provided. The mounting portion (23) is erected at the substantially central portion of the actuator bracket where the shaft (20) is orthogonal to the axis of the axle housing (4), and the mounting portion (23) is mounted so as to incline upward. A mounting structure for a rear wheel neutral lock device, characterized in that a surface (24) is formed, and a bolt hole (25) for mounting a lock actuator (15) is formed in the mounting surface.