JPH0366530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for movably connecting a plurality of connected members in a rotatable manner using a connecting pin.

[Prior Art] Conventionally, when connecting members to be connected mutually in a rotatable manner, a locking edge 2a is provided at the base end as shown in FIG. One connected member 3 (hereinafter referred to as connection A part 3) and the other one connected member 4 (hereinafter referred to as connection B part 4) are assembled to each other by passing a connecting pin 2 having a small diameter and the same diameter.
) is placed on the jig 1, and the tip 2b of the connection pin 2 protruding from the connection B part 4 is caulked as shown in FIG.
Connect the connection A part 3 and the connection B part 4 with each other, and then apply a sealing agent to force the AB connection parts 3 and 4 apart to form a gap a. Therefore, the connection A component 3 and the connection B component 4 were connected to each other so as to rotate smoothly, resulting in a product as shown in FIG. 4.

[Problems to be Solved by the Invention] In the conventional method, the jig 1 is simple as shown in the figure, but in order to smoothly move the connection A part 3 and the connection B part 4 relative to each other, a wrapping agent is applied as described above. It is necessary to apply a coating and forcibly separate them, or sometimes to force the part 4 toward the caulked part 2' of the connecting pin 2 to create a gap a, which is called "gathering". There is a problem in which the operating condition (mainly operating force) of the product varies.
Furthermore, there was also a problem in which the part 4 fell off from the caulked portion 2' due to excessive lapping.

[Means and actions for solving problems]

The present invention was created with the aim of avoiding the drawbacks of the conventional example, and has a locking edge at one end and a locking portion of the connecting hole of a plurality of connected materials that are connected to each other. The fitting portion of the connecting pin having a diameter smaller than the edge is inserted, and the locking edge of the connecting pin is brought into contact with the connected material, and then the locking edge of the connecting pin and the connected object that is in contact with the locking edge are inserted. The contact position with the material is separated and the desired amount of space is formed between the two members and held.
Thereafter, while maintaining the distance between the two members and receiving the locking edge of the connecting pin, the tips of the fitting portions of the connecting pins inserted into the plurality of connected materials are processed to prevent them from coming off. , for connecting connected members.

According to the above connection method, before the locking process,
The desired gap is provided between the locking edge of the connecting pin and the material to be connected, and even if the tip of the connecting pin comes into close contact with the material to be connected during the subsequent lifting process of the tip of the connecting pin, A set gap is ensured between the locking edge and the material to be connected.

[Example] Figures 1 to 3 show an example of an apparatus in which the method of the present invention is implemented.

1 in the figure is the main body of the device, and the top surface of the main body 1 has a connection A.
A recessed edge 17 on which the part 3 or B part 4 is placed is provided, and a screw 7 is installed near this recessed edge 17 to
A component presser 5 is provided to press and fix the components 3 and 4 to the main body 1.

At the appropriate position of the recessed edge 17, a first push-up pin 6 is disposed in the upper part of the guide hole 18 provided in the main body 1 so as to be freely protrusive and retractable, and a spring 10 constantly biases the pin 6 downward. is arranged between the base 6' of the first push-up pin 6 and the main body 1, and a piston 8 is housed under the base 6' of the pin 6 so as to be vertically movable. Two push-up pins 11 are provided. The push-up pin 11 has its lower part protruding from the lower part of the guide hole 18 to fill the empty space 19 of the main body 1.
The push-up rod 12 is placed on one end 12' of a push-up rod 12, which is swingably arranged around a shaft 16 therein.

The reference numeral 13 in the figure is a spring that urges one end 12' of the push-up bar upward, and the reference numeral 14 is a cam that resists the spring 13 and restricts the swinging of the push-up bar 12.

The other end 12'' of the push-up rod 12 is led out from the empty chamber 19, and a dial gauge 15 supported on the main body 1 is brought into contact with this one end 12''.

Reference numeral 9 denotes a set screw installed horizontally on the main body 1, and the tip 9' of the screw 9 is adapted to press against a piston 8 disposed vertically movably in the guide hole 18 to fix the piston 8.

Therefore, the locking edge 2 is inserted into the connection hole into which the connection pin drilled in the connection A part 3 and the connection B part 4 is fitted.
A connecting pin 2 having a fitting portion with the same diameter that fits into the connection hole is passed through from the lower side, that is, from the A component 3 side, and placed on the recessed edge 17 of the main body 1, When the cam 14 is rotated after the component is clamped between the component holder 5 and the main body 1 by tightening the screw 7, one end 1 of the push-up bar 12 is pushed up by the spring 13.
2' swings around the shaft 16 to push up the second push-up pin 11. The pin 11 pushes up the first push-up pin 6 via the piston 8, and as the pin 6 rises, the connecting pin 2 located on the pin 6 rises, and the locking edge 2a of the connecting pin 2 It will rise to the upper limit where it comes into contact with the connection A part 3 (FIG. 2). At this point, the dial gauge 15 is set to 0, and then the cam 14 is rotated to lower one end 12' of the push-up rod 12 against the spring 13. (This amount of descent 1 (amount of change) is equivalent to the amount of gap a desired to be provided between connection A component 3 and connection B component 4).

Since the push-up rod 12 is displaced around the shaft 16, the amount of displacement can be read with a dial gauge.

When the tip 12' of the push-up rod 12 descends, the elasticity of the spring 10 causes the first push-up pin 6 to descend by the previously set displacement amount (FIG. 3). At this time, by caulking the tip 2b of the connecting pin 2 protruding from the connecting part B 4, both parts 3 and 4 are connected to each other while forming a gap a of a desired amount.

In addition, in the example device, dial gauge 1
5 may be replaced with another measuring instrument such as an electric micrometer.

Further, other locking processing such as laser processing or electron beam processing may be performed without caulking the tip 2b of the connecting pin 2.

In the embodiment, a pair of materials to be connected are connected, but it is not impossible to apply the present invention to the case where three or more materials to be connected are connected.

[Effects of the Invention] According to the present invention, when connecting a plurality of connected materials using a connecting pin having a locking edge and having a fitting portion having the same diameter and smaller diameter than the locking edge, Since the desired distance is provided in advance between the locking edge of the connecting pin and the material to be connected, the connecting pin will not lock even if the tip of the connecting pin is made to come in close contact with the material to be connected due to the locking process. Since the set distance between the edge and the material to be connected is secured and there is no variation in the distance, it is possible to obtain a product in which the operating state of the material to be connected is extremely stable, making it easy for skilled workers to remove laps and play. This method has advantages such as omitting a step requiring lapping, and since no lapping agent is used, it is suitable for connecting materials to be connected that are sensitive to contamination, and there is no possibility of connecting pins falling out due to overlapping.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing an example of a device to which the present invention is applied; Fig. 2 is a partially enlarged view showing a state in which the first push-up pin has been raised to the upper limit position of the connection pin; The figure is a partially enlarged view showing a state where the connecting pin has been lowered by a desired amount from the state shown in Fig. 2, Fig. 4 is a partially cutaway side view of a product produced by the conventional method or the method of the present invention, and Fig. 5 is a conventional method. An explanatory diagram of
FIG. 6 is a partially cut-away side view of a state in which the conventional method has been applied to prevent slippage. 2...Connection pin, 2a...Locking edge of pin, 3...One connected material, 4...Other one connected material, a...Gap.

Claims (1)

[Scope of Claims] 1. A method for movably connecting a plurality of members to be connected using a connecting pin having a locking edge and a fitting portion having a smaller diameter than the locking edge and the same diameter, comprising: inserting the fitting portion of the connection pin into the connection hole of the connecting pin and abutting the locking edge of the connection pin against the connected material; A step of separating the abutment area from the connected material to form and hold a desired amount of gap between both members, and a state in which the gap between the two members is maintained and the locking edge of the connecting pin is received. A method for movably connecting members to be connected, comprising the steps of: processing the tips of the fitting portions of the connecting pins inserted into the plurality of members to be connected to prevent them from coming off.