JPH0749057Y2 - Cotter pin - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cotter pin used for movably connecting a connecting portion of equipment or the like used in an overhead power distribution line.

[0002]

BACKGROUND ART Recently, with the advancement of social environment, tend to difficulties of the implementation of a power failure work, with increasing live-line working, the work safety, although indirect method is being introduced, its
In this case , the cotter pin used is shown in FIG.
As described above, the main body C and the split pin D are of a split type, and in particular, since it is difficult to operate the small split pin D , the development of a cotter pin having good workability has been earnestly desired.

Therefore, conventionally, in response to the above request,
For example, elasticity as shown in Japanese Utility Model Publication No. 39-28932.
The retaining piece that tends to open, the open side of which is the pin head.
Toward paddles and the outer surface thereof protrudes from the outer periphery of the pin
And the cotter pin attached to the pin body,
As shown in No. 9-50657, at one end of the pin body
A groove is provided, and a split pin is installed in the groove with a fixing pin,
The cotter pin that integrates the pin body and the split pin is adopted.
By using it, the connecting work of the connecting member is facilitated,
Workability is improved.

[0004]

[Problems to be solved by the invention ]
In the conventional cotter pin, the cotter pin is a connecting member.
When removing the pin from the outside,
Do not press the pin or retaining piece directly with one hand,
Is pressed with a tool etc. to keep it in the pin body.
While holding it, pull it out from the connecting member with the other hand.
Therefore, the extraction work becomes complicated and
Workability was getting worse. Especially when the connecting member is suspended
In this state, pulling out the cotter pin does not drop the connecting member.
However, the present invention , which has been difficult due to such problems as
It was devised in consideration of the subject, and the purpose is a cotter pin.
Of the cotter pin when removing the
It can be pulled out easily and workability can be improved.
The point is to provide a cotter pin.

[0005]

[Means for Solving the Problems] To achieve the above object
According to the present invention, the cylinder (1a) is attached to one end in the length direction of the cylinder.
Hollow cylindrical shape with head (2) larger in diameter than part (1a)
A pin body (1) and a core member (5) movably accommodated in the pin body (1), the pin body (1)
Through holes (3) and (4) facing each other in the cylindrical portion (1a) of
On the other hand, the core member (5) is paired with the through holes (3) and (4).
The tube through the through holes (3) and (4) at the facing position.
Protruding outside the portion (1a) and facing the pin body (1)
Of the through holes (3) and (4) by moving the core member (5)
A retaining body (9) having blades (11) and (12) which are regulated by an inner edge and are capable of retracting into the cylindrical portion (1a ) is provided.
It

[0006]

According to the present invention, the vanes 11 and 12 are
It protrudes to the outside of the cylindrical portion 1a through the through holes 3 and 4 and comes out.
Pull out the cotter pin in the stopped state from the connecting member
In that case, the core tool 5 is moved with respect to the pin body 1.
The blade portion 1 protruding outward from the tubular portion 1a.
1, 12 are regulated at the inner edges of the through holes 3 and 4,
Since it retreats into the cylindrical portion 1a, the blade portions 11 and 12 are
The pin body 1 does not need to be pressed with your hands or equipment.
Just move and move the core tool 5 on the head 2 side
Then, the cotter pin can be pulled out.

[0007]

EXAMPLE An example shown in FIG . 4 is a hollow cylindrical pin body.
1 and a core tool movably housed in the pin body 1.
5 is a cotter pin provided with
4 is provided with a retaining body 9, and FIG.
The state where the child tool 5 is stored is shown.

The pin body 1 is as shown in FIG.
At the one end in the length direction of the hollow cylindrical tubular portion 1a,
A head 2 having a diameter larger than that of 1a is formed, and the head 2 is
A retaining device together with blades 11 and 12 of a retaining body 9 described later.
Connection holes provided in the connection members A and B to form the structure
It has a larger diameter. Furthermore, the cylindrical portion of the pin body 1
1a is located at a position where the outer circumference of the cylindrical portion 1a is divided into two equal parts.
Then, perforate the elongated rectangular through holes 3 and 4 in the length direction.
There is.

As shown in FIG. 2, the core element 5 has
In order to be movably stored in the pin body 1, the
A cylindrical shaft portion 5a formed to have a smaller diameter than the pin body 1.
And at the one end in the length direction of the shaft portion 5a,
It is movably fitted to the circumference and has a diameter larger than the inner diameter of the cylindrical portion of the pin body 1.
The large disk-shaped stopper portion 6 and the shaft portion 5a
At the other end in the length direction, a protruding portion 7 protruding substantially in a U shape
It has and.

The retaining member 9 is made of an elastic metal.
As shown in FIG. 3, the tip of the protrusion 7 is
A substantially C-shaped elastic imparting portion 10 engageable with
From both open ends of the giving part 10 to spread outward respectively
The projecting portions 11a and 12a that are inclined and project, and the projecting portions
The folded-back portions 11b and 12b, which are bent inward from the free ends, respectively.
Formed of a pair of blades 11 and 12 having
It And the above-mentioned retaining body 9 is provided with the elasticity imparting portion 10 in front.
By engaging with the tip portion 8 of the protrusion portion 7,
It is attached to the child tool 5.

The connecting portion with the cotter pin having the above structure
When connecting the members, as shown in FIG. 7, the connecting members A,
The connecting holes B are polymerized, and the retaining member 9 is engaged in the connecting holes.
Insert the cotter pin that fits the fitted core tool 5, or
Is a core member in which the pin body 1 is inserted and then the retaining body 9 is engaged.
5 are fitted and connected, and the state that they are connected in this way
In the state, as shown in FIG. 5, the tip of the core tool 5 is
The blade portions 11 and 12 of the retaining body 9 fitted to the portion 8 are
From the through holes 3 and 4 of the tubular portion 1a of the main body 1, project outside the tubular portion 1a.
Take out and configure a retaining mechanism together with the head 2 of the pin body 1.
Then, the connecting members A and B are connected.

Then, the cotter pin is removed from the connecting member.
When pulling it out, store it in the pin body 1 as shown in Fig. 6.
Move the core member 5 that has been
For example, the blade portion 1 protruding outward of the cylindrical portion 1a
1, 12 are regulated at the inner edges of the through holes 3 and 4,
Since it retreats into the cylindrical portion 1a, the blade portion
No need to press 11, 12 with your hands or equipment
Also moves the core tool 5 on the head 2 side of the pin body 1.
You can pull out the cotter pin just by operating
It will be.

[0013]

As described above, according to the present invention, the cylinder
A head having a larger diameter than the cylindrical portion 1a at one end in the length direction of the portion 1a
A hollow cylindrical pin body 1 provided with 2 and inside the pin body 1
And a core tool 5 that is movably accommodated in the
While the through holes 3 and 4 facing each other are provided in the tubular portion 1a of the body 1,
At the position facing the through holes 3 and 4 in the core member 5.
Through the through holes 3 and 4 to project to the outside of the tubular portion 1a,
Moreover, by moving the core tool 5 with respect to the pin body 1,
Restricted by the inner edges of the holes 3 and 4, it is possible to retreat into the cylindrical part 1a.
Is provided with a retaining body 9 having various blades 11 and 12.
Then, the blade portions 11 and 12 provided on the retaining body 9 are
It projects through the through holes 3 and 4 to the outside of the cylindrical portion 1a and is pulled out.
Pull out the cotter pin that is in the stopper state from the connecting member
In that case, the core tool 5 is moved with respect to the pin body 1.
The blade portion 1 protruding outward from the tubular portion 1a.
1, 12 are regulated at the inner edges of the through holes 3 and 4,
Since it retreats into the cylindrical portion 1a, the blade portions 11 and 12 are
Even without the need to press it with your hands or equipment
Simply move 5 to remove the cotter pin
This makes it easier to remove the cotter pin.
Therefore, the workability can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a pin body that constitutes a cotter pin according to the present invention .

FIG. 2 is a perspective view of a core tool.

FIG. 3 is a perspective view of a retaining member .

FIG. 4 is a perspective view showing a cotter pin with a part thereof cut away .

FIG. 5 is a cotter in which the core tool is stored in the pin body.
Sectional drawing of a pin .

FIG. 6 shows a state in which the blade portion of the retaining body is retracted into the pin body.
Sectional drawing of the cotter pin which shows .

FIG. 7 is a perspective view showing a usage state of a cotter pin .

FIG. 8 is a perspective view of a general cotter pin.

[Explanation of symbols]

 1 pin main body 1a cylinder part 3,4 through hole 5 core tool 9 retaining body 11,12 blade part

Claims (1)

[Scope of utility model registration request] 1. A cylindrical portion (1a) at one end in the longitudinal direction of the cylindrical portion.
Of larger diameter than the (1a) head (2) a hollow cylindrical provided
A pin body (1), the pin body (1) movably yield <br/> accommodated by the core member in a (5), the pin body (1)
One in which through holes (3) and (4) facing each other are provided in the tubular portion (1a).
On the other hand, the core member (5) faces the through holes (3) and (4).
The cylindrical portion through the through holes (3) and (4)
The inside of the through holes (3) and (4) is formed by the protrusion of the core member (5 ) to the outside of the pin body (1) and the protrusion of the core body (1) .
A blade part that is restricted by the edge and can retract into the cylindrical part (1a)
Provided with a retaining body (9) having (11) and (12).
A cotter pin characterized by and .