JPH0256527B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for installing a roller latch leaf spring in a small one-way clutch assembly process.

(Prior Art) FIGS. 3a and 3b are a plan view and a partial sectional view showing the structure of a one-way clutch to which the present invention is applied. As is well known, this one-way clutch includes a nest 10 that accommodates the leaf spring 1.
The outer ring 11 is fitted into the main body 4 which is provided with rollers 5 at several locations. Outer ring 11
The inner diameter part of the roller 5 has a polygonal shape, and the mutual relationship between the insertion shaft 12 and the roller diameter is determined in advance. The clutch is either "engaged" or "released" and performs a clutch action. At this time, the shaft 12 "bites"
In order to ensure more reliable contact between the shaft, roller, and outer ring when the roller rotates in the direction of , a leaf spring is placed that has the function of biasing and pressing the roller in a certain direction.

Such leaf springs are S-shaped, U-shaped,
Alternatively, various shapes such as a Z-shape can be considered, but in any of these shapes, if the leaf springs are supplied as individually separated parts in an unaligned state,
They tend to get entangled with each other. Therefore, when installing a leaf spring, it is necessary to remove the tangles and align the orientation of the leaf spring according to the position of the nest, which is difficult to automate and must be done mostly by hand. This is the current situation.

(Problems to be Solved by the Invention) In the above-mentioned manual installation of leaf springs, the parts are minute and it is extremely difficult to improve efficiency.
Therefore, it requires a lot of labor and time, leading to high costs, and has been a major obstacle to the automation of all processes, which has been a trend in recent years.

As a result of repeated studies in view of the above circumstances, the inventor has arrived at the present invention.

(Means for Solving the Problems) The method for installing a roller latch plate spring for a one-way clutch according to the present invention includes a means for supplying a plate spring material as a comb-shaped plate by making the plate spring material continuous at a certain part thereof and aligning them. , means for sequentially cutting individual leaf springs from the leaf spring material; and means for synchronizing the supply of a clutch body having a nest portion of leaf springs with the leaf spring supply means and cutting means at the leaf spring insertion position; and means for inserting the leaf spring into the nest part.

(Function) FIG. 1 shows the shape of an example of a plate spring material. This material 2 is made by bending one end of the punched side of a plate-shaped body previously punched into a comb shape into a predetermined shape, specifically an S-shape as shown in FIG. An engagement groove 3 with a sprocket is provided to enable pitch feeding. This material 2 is cut at a predetermined portion to form a spring shape, that is, an S-shape in this example, and becomes a leaf spring 1 for rolling.

The shape of the material as described above makes it possible to supply parts in an aligned manner, which is an essential condition for automation.

(Example) An embodiment of the present invention will be described in detail below.

FIGS. 2a and 2b are partial sectional views showing a device for cutting and inserting a leaf spring. In the figure, 6 is a fixed cutter, 7 is a movable cutter, 8 is a guide channel,
9 is an insertion pressure.

First, when the movable cutter 7 and the insertion pressurer 9 are in the retracted position, the one-way clutch body 4
A semi-finished product with rollers 5 attached thereto is fixed to a holding chuck (not shown), and the nest portion 10 of this semi-finished product advances to the leaf spring insertion position in synchronization with the leaf spring supply device. When the nest part 10 and the leaf spring material 2 are stopped at a fixed position, the movable cutter 7 moves forward and removes the leaf spring 1 from the material at the position where it overlaps with the fixed cutter 6.
Separate. (Fig. 2a) Next, the insertion pressurer 9 descends and pushes the separated leaf spring 1 downward. The leaf spring 1 is clamped by the side surface of the guide channel 8, and smoothly advances to the waiting nest part 10 of the clutch to complete insertion. (FIG. 2b) The material 2 after cutting the leaf spring is pulled out of the cutting/insertion device as a plate-like body.

Here, we have shown an S-shaped leaf spring, but U-shaped, Z-shaped, etc. leaf springs can also be used.
The above-described device can be applied by making the head shape of the insertion pressure correspond to the shape of the leaf spring.

(Effects of the Invention) In the method of the present invention, the leaf springs are not separated into individual parts as in the conventional method, but are automatically supplied as raw materials for the comb-shaped plate body, and further cut and inserted continuously. , work automation and high efficiency have been achieved, and the effect on the assembly process of small one-way clutches is extremely large.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the leaf spring material, Figure 2 a,
3b is a partial cross-sectional view showing the main part of the cutting/insertion device, and FIGS. 3a and 3b are a plan view and a partial cross-sectional view schematically showing the structure of the one-way clutch. 1... Leaf spring, 2... Leaf spring material, 3... Engaging groove, 4... One-way clutch body, 5... Roller, 6... Fixed cutter, 7... Movable cutter, 8... Guide channel, 9...Insertion pressurer, 10...Nest portion, 11...Outer ring, 12
……shaft.

Claims (1)

[Claims] 1. A means for supplying a comb-shaped plate-shaped body by making the plate spring material continuous at a certain part thereof and arranging them;
means for sequentially cutting individual leaf springs from said leaf spring material; means for synchronizing the supply of a clutch body having a nest portion of leaf springs with said leaf spring supply means and said cutting means at a leaf spring insertion position; A method for installing a roller latch plate spring for a one-way clutch, comprising means for inserting the spring into a nest portion.