JP2538042Y2 - Sealer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device, and more particularly to a sealing device capable of preventing cracks and breakage of a receiving nail.

[0002]

2. Description of the Related Art A sealer is used for caulking a metal seal externally fitted to a joint portion of a band wound around a package, as shown in, for example, a perspective view of FIG. 3 and a cross-sectional plan view of FIG. A pair of fulcrum pins 2 on both sides of the tip of a pair of upper and lower substrates 1
And the supporting claws 3 are externally fitted to and supported by the fulcrum pins 2, and the pawls 4 are swingably externally fitted to and supported by the fulcrum pins 2, so that the receiving claws 3 are provided between the two substrates 1. The back of
A cylindrical or columnar board connecting pin 5 for connecting and fixing the two boards 1 is disposed at a position where the board connecting pin 5 comes into contact with the base side surface.

A handle connecting pin 6 is slidably fitted on the base end side of the connecting pin 5 of both substrates 1, and a pair of handles 7 slidably connected to each other by the handle connecting pin 6. Each tip is swingably connected to the base end of the claw 4. At the base end of each handle 7, there is provided a grip 8 that can be gripped by the user's hand. By closing both handles 7 in a direction to reduce the distance between the grips 8, the distance between the base ends of the claws 4 is increased, The tip of the pawl 4 is designed to bite into the tip of the receiving nail 3.

Further, a stopper pin 9 for setting a minimum distance between the two handles 7 is provided at an intermediate portion between the two handles 7,
The maximum amount of caulking of the metal seal by the claws 4 and the receiving claws 3 can be limited to a certain value or less.

[0005] In the sealing device having such a structure, the metal seal is clamped between the tip of the claw 4 and the tip of the receiving claw 3.
Presses the receiving nail 3 against the board connecting pin 5 via the metal seal.

Since the board connecting pin 6 is formed in a cylindrical or columnar shape, the force for pressing the receiving claw 3 against the board connecting pin 5 is concentrated at one point of the receiving claw 3. There is a drawback that the nail 3 may be cracked and broken, thereby shortening the life of the sealer.

On the other hand, as a suggestion of a structure for preventing such a problem from occurring, there is a caulking machine for a packaging band disclosed in Japanese Utility Model Laid-Open No. 58-89273. As shown in FIG. 5, the caulking machine includes claws (claws) 103 and 10
4 and a plurality of small plates 132 to 135 and small plates 142
And small plates (receiving claws) 122 to 124 constituting the fixing portion 101 are interposed between the small plates 132 (142) to 135 (145). The fixing portion 101 is formed by overlapping outer plates (substrates) 121 and 125 and small plates 122 to 124. The outer plates 121 and 125 extend greatly downward and occupy a large area because the grooves 110 need to be formed. On the other hand, the small plates 122 to 124
Is a small one that can be cut above the fixing screw (substrate connecting pin) 111 as shown by a dashed line 126. Then, the fixing portion 1 is attached to the nails (claws) 103 and 104.
01 is formed by stacking a plurality of small plates 122 to 124, so that when the stopper is inserted into the recess 102 in the fixing portion 101, the stopper can be uniformly supported in the axial direction. In addition, the stopper can be uniformly bent in the axial direction by the claws 103 and 104. The caulking machine disclosed in Japanese Utility Model Application Laid-Open No. 58-89273 has a very general structure of a so-called sealing device, that is, a sealing device in which a plurality of small plates constituting a receiving nail and a holding nail are alternately stacked. And the fact that one of the claws 103 and the other of the claws 104 close the recess at the same time is characteristic.

In the caulking machine disclosed in Japanese Utility Model Application Laid-Open No. 58-89273, the small plates 122 to 124 are higher than the fixing screws (substrate connecting pins) 111 as indicated by the dashed line 126 as described above. Since it has such a shape that it can be cut with
Even if the small plates (receiving claws) 122 to 124 are slightly bent toward the fixing screw 111 side,
11 is not pressed against, so that small plates (claws) 122 to 1
The force is not concentrated on one point of the plate 24, so that breakage due to cracking of the small plate can be prevented. That is, according to the caulking machine disclosed in Japanese Utility Model Application Laid-Open No. 58-89273, a structure is obtained in which a single point is prevented from being concentrated on the catch by preventing the catch from contacting the board connecting pin. .

[0009]

However, as described above, if the small plates 122 to 124 have such a shape that they can be cut above the fixing screws (substrate connecting pins) 111 as shown by a dashed line 126, as described above. Since the central portions of the small plates 122 to 124 are not supported by anything, the small plates 122 to 124 are repeatedly used as the sealing device is used.
To 124 are deformed, so that the fasteners cannot be sufficiently caulked, and the life of the sealer is shortened excessively.

In other words, the structure shown in FIG. 4 has a drawback that the life of the sealer is shortened in terms of breakage of the receiving nail due to concentration of the force at one point of the receiving nail, while the receiving nail and In the caulking machine disclosed in Japanese Utility Model Application Laid-Open No. 58-89273, in which a single point can be prevented from being concentrated on the receiving claw by not abutting the fixing pin, the small plates 122 to 124 are deformed, and the stopper is sufficiently caulked. However, there is a disadvantage that the life of the sealer is excessively shortened due to a decrease in the function of the sealer, which cannot be performed easily.

The present invention has been made in view of the above circumstances, and a sealing device which can prevent breakage due to cracking of a receiving nail and also prevent deterioration of the function of the sealing device due to deformation of the receiving nail. The purpose is to provide.

[0012]

According to the present invention, a pair of fulcrum pins are supported on both sides of a pair of upper and lower substrates, and a plurality of plate-shaped receiving claws are externally supported on the fulcrum pins. At the same time, each of the claws is swingably externally fitted and supported, and a board connecting pin for connecting and fixing the two boards is arranged between the two boards at a position in contact with the back surface of the catch nail, and The rear surface is formed in a plane, and the substrate connecting pin is formed with a flat surface for receiving the rear surface of the receiving claw.

Further, according to the present invention, a pair of fulcrum pins are supported on both sides of a pair of upper and lower substrates, and a plurality of plate-like receiving claws are externally fitted to and supported by the two fulcrum pins. In a sealing device in which a board connecting pin for connecting and fixing both substrates at a position in which the claws are swingably externally fitted and supported between the two substrates and abutting against the back surface of the receiving claw is provided, The rear surface is formed in a plane, and the substrate connecting pin is formed with a flat surface for receiving the rear surface of the receiving claw.

[0014]

In the present invention, the back surface of the receiving nail formed in a plane is received by the plane of the board connecting pin, so that the reaction force acting on the receiving nail from the board connecting pin is dispersed in a certain range on the back surface of the receiving nail. The surface pressure acting on the back surface of the receiving nail is suppressed below the withstand pressure of the receiving nail, and breakage due to cracks in the receiving nail is avoided.

That is, rather than trying to avoid a single point of force on the receiving claw by not allowing the receiving claw and the board connecting pin to abut, the contact between the receiving claw and the board connecting pin can be prevented. Thus, it is possible to avoid a single point concentration of the force on the receiving nail.

In the case where the receiving claw is composed of a plurality of plate-like members, even if the plurality of plate-like members to be connected are shifted from each other in the left-right direction, the plate-like member which receives the board connecting pin is provided. Since there is no deviation between the respective back positions, the object of dispersing the contact pressure can be reliably achieved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sealer according to an embodiment of the present invention will be described in detail with reference to the cross-sectional plan view of FIG. 1, the perspective view of FIG.

As shown in the perspective view of FIG. 3, the basic structure of this sealer is the same as that of the conventional example except that the shape of the board connecting pin 5 is different. That is, a pair of fulcrum pins 2 are supported on both sides of the tip of the pair of upper and lower substrates 1, and the receiving claws 3 are externally fitted to and supported by the two fulcrum pins 2. A board connecting pin 5 for movably externally fitting and supporting the board 1 and connecting and fixing the two boards 1 is disposed at a position where the board 1 comes into contact with the back surface of the receiving claw 3.

A handle connecting pin 6 is slidably fitted on a base end side of the connecting pins 5 of the two substrates 1, and a pair of handles which are swingably connected to each other by the handle connecting pin 6. Each tip of 7 is swingably connected to the base end of the claw 4. At the base end of each handle 7, there is provided a grip 8 that can be gripped by the user's hand. By closing both handles 7 in a direction to reduce the distance between the grips 8, the distance between the base ends of the claws 4 is increased, The tip of the pawl 4 is designed to bite into the tip of the receiving nail 3.

Further, a stopper pin 9 for setting a minimum distance between the two handles 7 is provided at an intermediate portion between the two handles 7,
The maximum amount of caulking of the metal seal by the claws 4 and the receiving claws 3 can be limited to a certain value or less.

The back surface of the receiving claw 3 is formed in a plane, and the board connecting pins 5 are formed in a prismatic shape having four planes 10 as shown in FIGS. The two substrates 1 are connected to each other by inserting and screwing a set screw 11 from the outside of the device 1, and the back surface of the receiving claw 3 is received on one plane 10 of the substrate connecting pin 5.

In this embodiment, the metal seal is attached to the claws 4.
When crimped between the tip of
The caulking force presses the receiving claw 3 against the board connecting pin 5 via the metal seal. However, since this pressure is received by the flat surface 10 of the board connecting pin 5, the pressure is applied from the board connecting pin 5 to the back surface of the receiving claw 3. The acting reaction force is dispersed and acts within a certain range from the plane, and the surface pressure acting on the back surface of the receiving claw 3 is suppressed to the withstand pressure of the receiving claw 3 or less. Therefore, there is no possibility that a crack is generated on the back surface of the receiving nail 3 or that the receiving nail 3 is broken.

In the above embodiment, the board connecting pins 5 are arranged between the boards 1 and are not fitted into the board 1. For example, as shown in the perspective view of FIG. It may be configured to include a pin main body 51 and a fitting portion 52 protruding from both ends thereof and fitted in a through hole formed in the substrate 1.

Further, in the above embodiment, the board connecting pins 5 are formed in a quadrangular prism shape, but may be rectangular prisms in cross section. The board connecting pin 5 has four planes 10, but the number of the planes 10 is not particularly limited, and three or less planes, for example, as shown in the perspective view of FIG. 2 or more than five planes, for example, eight planes 10 as shown in the plan view of FIG. 2D.

[0025]

As described above, according to the present invention, since the back surface of the receiving nail is received by the plane of the board connecting pin, the force acting on the receiving nail from the board connecting pin is dispersed in a certain range. The contact pressure can be suppressed below the withstand pressure of the receiving nail,
Accordingly, it is possible to prevent the receiving nail from being cracked or the crack from growing and being broken. Also,
When the back surface of the receiving nail is not received by the board connecting pin, it is possible to prevent the functional deterioration due to the deformation of the receiving nail. Also, in the case where the receiving claw is composed of a plurality of plate-like members, even if the plurality of plate-like members to be connected are shifted from each other in the left-right direction, the back surface of each of the plate-like members that receives the board connecting pin. Since there is no deviation in position, the effect of reliably dispersing the contact pressure can be achieved.

Further, the present invention can be easily and inexpensively implemented by merely changing the shape of the conventional board connecting pin, and only by replacing the existing conventional board connecting pin. Thus, the existing conventional product can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a main part of the present invention.

FIG. 2 is a perspective view of a board connecting pin of the present invention, (b) a perspective view of another board connecting pin of the present invention, (c) a perspective view of another board connecting pin of the present invention, and the present invention. (D) is a plan view of still another board connection pin.

FIG. 3 is a perspective view showing a general configuration of a sealer.

FIG. 4 is a cross-sectional plan view of a main part of a conventional example.

FIG. 5 is a perspective view showing a conventional packing band caulking machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 board 2 fulcrum pin 3 receiving nail 4 pawl 5 board connecting pin 10 plane

Claims (2)

(57) [Scope of request for utility model registration] 1. A pair of fulcrum pins are supported on both sides of a pair of upper and lower substrates, and a receiving claw is externally fitted to and supported by both fulcrum pins. In a sealer in which a substrate connecting pin for connecting and fixing both substrates at a position in contact with the back surface of the receiving claw between the two substrates is arranged, the back surface of the receiving claw is formed in a plane, and A sealing device having a flat surface for receiving a back surface of a receiving nail. 2. A pair of fulcrum pins are supported on both sides of a pair of upper and lower substrates, and a plurality of plate-like receiving claws are externally fitted to and supported by the two fulcrum pins, and each of the claws is rocked. In a sealing device in which a board connecting pin for connecting and fixing the two substrates at a position abutting on the back surface of the receiving claw between the two substrates so as to be movably fitted and supported, the back surface of the receiving claw is formed in a plane. And a flat surface for receiving the back surface of the receiving claw is formed on the board connecting pin.