JPS587431B2 - service tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a service tool for fastening and disassembling a container consisting of two sections.

In particular, the container of interest of the present invention is a brake booster body having two bayonet-connected sections, such a brake booster internally having various parts that perform important functions for braking action, In addition, these parts must be regularly inspected and replaced, so disassembly and fastening operations are frequently repeated.

However, due to the necessity of keeping the interior airtight, the fastening force is large, and it is extremely troublesome for workers to loosen this fastening force manually during disassembly work.

For example, there is a primitive method in which one end of one body is fixed in a vise, and the other body is rotated using a lever or the like.

Of course, the same method is used for refastening work after disassembly and inspection (or parts replacement).

In addition, in other brake boosters, there is a type in which two sections are connected by pressing and then rotating a locking plate interposed between both sections, but in this case as well, before rotating the locking plate. The section must be pressed, which is extremely troublesome to do manually, so a press machine or the like is often used, which is costly and dangerous, creating the need for tools with a high degree of safety.

Therefore, the present invention provides for these relatively large containers,
The object of the present invention is to provide a service tool that allows assembly and disassembly work to be accomplished extremely easily and safely by relatively rotating or pressing two sections that form a container.

1 to 4 show an embodiment in which the tool according to the present invention is applied to a brake booster.

In the figure, 10 designates a base portion of the tool, on which a pair of vertically extending support members 11, 12 are provided.

Threaded portions 11a and 12a are provided at the upper end portions of these support members 11 and 12, respectively, and an upper plate 13 extending horizontally is fitted into the threaded portions, and nuts 14,
The washer 15 is screwed so that its vertical position within the threaded region can be adjusted.

Furthermore, this upper plate 13 is equipped with a brake booster 1.
A mounting hole 13a is provided, and the booster 1 is disposed between the plate 13 and the base 10 as shown in FIG.

A rotation shaft 18 is rotatably implanted in the substantially central portion of the base 10 via a bearing 17 held by a holder 16.

Further, a screw jack assembly 19 is fixed to one side of the base 10, and a screw portion 20 of the screw jack assembly 19 extends horizontally at an angle with respect to the base 10 as shown in the second figure.

A lever 21, which has one end screwed into this screw part 20 and the other end fixed to the rotation shaft 18, is rotated when the operating part 19a of the jack assembly 19 is rotated by a handle 22 shown in FIG. A rotation shaft 18 that reciprocates on the screw portion 20 and is fixed to the other end is rotated.

At the upper end of the rotation shaft 18 is a plate 23 for mounting the booster 1.
(FIG. 4) is fixed, and as the rotation shaft 18 rotates, the booster 1 is rotated in the same direction.

This booster 1 has a section 1a attached to the upper plate 13 and a section 1b attached to the rotation shaft 18 side, which are fitted and rotationally fastened.

Now, to explain the case of disassembling the brake booster 1, attach the section 1b to the mounting plate 23,
Further, the section 1a side is inserted into a predetermined mounting hole 13a of the upper plate 13, and the upper plate 13 is screwed onto each support member 11, 12 via a nut 14.

In this case, by appropriately selecting the tightening force of the nut 14, the booster 1 can be held in an appropriately attached state.

Now, after installing the booster in this way, operate the screw jack assembly 19.

That is, when the handle 22 (FIG. 3) is engaged with the operating part 19 and rotated in one direction, the screw part 20 rotates, the lever 21 moves on this screw part 20, and the rotation shaft 1
8 begins to rotate relative to the base 10 as the lever 21 moves.

For this reason, the lower section 1b of the booster 1 fixed on the rotation shaft 18 is rotated via the mounting plate 23.

However, since the upper section 1a of the booster 1 is fixed to the upper plate 13, the upper and lower sections 1a, 1
A relative rotation occurs between the two parts, the fastening force between the two parts is released, and the two parts can be separated.

The assembly operation is easily accomplished by operating the jack assembly 19 in the opposite direction to that described above.

In the case of the booster of the type that is connected by pressing as described above, the booster is fixed in the state shown in the first figure, and the nut 14 is tightened to press the upper section 1a through the upper plate 13.

When the upper and lower sections have loosened in this way, they can be disassembled by lightly rotating the intermediate plate (not shown) that locks them together with a pair of pliers.

In the assembly work, for example, the lower section may be fixed to the mounting plate 23, the upper section attached to the upper plate 13 may be press-fitted via the nut 14, and then the two may be locked and connected using the intermediate plate.

In other words, in the case of the latter type of brake booster mentioned above, there is no need to use the jack assembly 19.

As explained in detail above, the use of the tool of the present invention significantly improves work efficiency compared to conventional brake booster assembly and disassembly work, and it can also be easily fixed on the tool, making it easier to assemble and disassemble brake boosters than conventional work. This has the advantage that work can be carried out safely without having to hold the booster by hand.

Furthermore, no separate equipment is required, and the jack assembly 19 (FIGS. 1 to 3) used for existing vehicles can be installed as is, which is advantageous in terms of cost.

[Brief explanation of drawings]

FIG. 1 is a front view showing an example in which the service tool according to the present invention is applied to a brake booster, FIG. 2 is a plan view of FIG. 1,
FIG. 3 is a plan view of the jack operating handle, and FIG. 4 is a plan view of the mounting plate. 10...Base, 11a, 12a...
Adjustment screw part, 14...Tightening nut, 13,
23... Mounting plate, 17... Bearing, 21... Lever.

Claims (1)

[Claims] 1. A service tool for assembling and disassembling a container consisting of two sections, including a base part, a pair of support members fixed on the base part, and a support member that rotates on the base part to fix one side section of the container. a first mounting portion pivotally connected to the container; and a second mounting portion extending horizontally and vertically movably fitted to the upper threaded portions of the strut members to secure the other section of the container. A nut for pressing the second attachment part downward is screwed into the upper threaded part of both the support members, and a horizontal direction screw is screwed to the first attachment part for rotating the second attachment part. A service tool to which a lever is fixed, and a jack assembly is mounted on the base portion to engage with the lever and rotate the lever.