JPH0639650Y2 - Envelope opening device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an envelope opening device called a letter opener for opening a sealed envelope.

[0002]

2. Description of the Related Art Conventionally, various envelope opening devices have been proposed, which are of a desktop type or a handheld type. Then, when the end of the envelope to be opened is inserted into the opening formed on the front surface of the device,
The end portion of the envelope is cut while automatically moving the envelope or by hand-held movement of the envelope or the device itself.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventionally proposed envelope opening device, in order to prevent the letters and the like contained therein from being cut and damaged, the opening portion of the envelope is cut off at its edge. It is set so as to cut at a slight interval from.

However, since the cutting width from the edge is set to be small, an envelope having perforations for opening and cutting, which has been frequently used recently, may not be able to open it. That is, in this type of envelope, since the edge portion outside the perforation is usually glued in a laminated shape, even if it is opened with a small cutting width, only the glued portion is cut. This is because the inside is not opened.

Not only that, but in the conventional envelope opening device, the opening edge portion to be cut and removed may be caught in the cutter and entangled as it is, because the cutting width is extremely small. There were cases where continuous use became difficult.

Therefore, the present invention has been devised in view of the above existing circumstances, and various adjustments can be made to the opening / cutting width of the envelope to accommodate various envelopes. (EN) An envelope opening device that travels smoothly without being clogged during cutting, ensures that the opened edge after cutting does not get entangled with the cutter, and is discharged and removed, and that is easy to handle. To aim.

[0007]

In order to achieve the above-mentioned object, in the present invention, a pair of upper and lower disc-shaped discs arranged in the opening 4 are formed by the driving force of the drive motor 32 built in the case body 1. Rotate the cutters 35 in opposite directions,
A predetermined envelope L inserted and moved between the cutters 35
In the envelope unsealing device for cutting and unsealing, the regulating plate 11 positioned at the inner part of the unsealing opening 4 to position the end edge of the envelope L,
It is characterized in that the opening / closing opening 4 can be slid in the depth direction.

Further, the adjusting guide means 10 for sliding the regulation plate 11 is connected to an upright regulation plate 11 which slides back and forth at the innermost position of the opening 4 and is connected to the upper portion of the regulation plate 11 to form the case body 1. And a slide operation plate 12 for external operation, which is arranged along the front-back direction.

The regulating plate 1 in the adjusting guide means 10
In the lower part of 1, there may be provided a guide ridge 14 slidably fitted in a guide groove 13 formed in the surface of the cover 8 provided on the lower surface of the opening opening 4.

Further, the switch contact 41 of the drive motor 32 circuit can be provided on the switch shaft 38 which swings integrally with the swinging switch lever 36 facing the opening 4 and this switch shaft 38. A pair of switch pieces 43 for opening and closing the drive motor 32 circuit are brought into contact with the tubular slip ring 42 covered with the switch ring 4 and one of the switch pieces 4 is
3 is placed on an insulating protrusion 44 protruding from the switch shaft 38, and is separated from the protrusion 44 by the rotation of the switch shaft 38 accompanying the swinging of the switch lever 36, and the slip ring 42. It can be configured to contact the surface.

[0011]

In the envelope opening device according to the present invention, the adjusting guide means 10 corresponding to the opening cut width of the envelope L is provided.
The restriction plate 11 on itself is moved back and forth along the front and rear of the case body 1, and the distance between the restriction plate 11 that slides forward and backward in the inner part of the opening 4 and the cutter 35 that does not move is set.

At the time of sliding operation, the guide ridge 14 fitted into the guide groove 13 in the cover 8 in the opening 4 is provided.
Allows the regulation plate 11 to be slid to slide smoothly without rattling.

When the opening edge portion of the envelope L inserted into the opening 4 swings the switch lever 36, the switch contact 41 is turned on to close the drive motor 32 circuit to drive the drive motor 32. . The drive motor 32 drives the pair of upper and lower disk-shaped cutters 35 to rotate in mutually opposite directions, and the cutting edge thereof starts the opening and cutting operation of the envelope L.

At this time, in the switch contact 41,
The swing of the switch lever 36 causes the protrusion 44 of the switch shaft 38 to move.
Is oscillated and retracted, the switch piece 43 is brought into contact with the surface of the slip ring 42, and the drive motor 32 circuit is turned on.

The guide ridge 14 at the lower end of the regulating plate 11 at the time of cutting the lock seal does not allow the edge of the envelope L inserted into the opening 4 to go under the regulating plate 11 and to position and cut the edge of the envelope L. Smooth movement of the envelope L during work.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <Outline> Reference numeral 1 shown in the drawing is a case body, and an opening opening 4 for inserting a predetermined envelope L to be opened is formed in the front portion of the case body 1. Within 4,
In order to limit the edge position of the inserted envelope L, the upper and lower disk-shaped cutters 35 for opening the envelope L are provided.
An adjustment guide means 10 that slides back and forth along the depth direction of the opening 4 is provided.

A drive mechanism 30 for rotationally driving the cutter 35 is built in the case body 1. The drive force of the drive mechanism 30 is decelerated and the upper and lower cutters 35 are driven.
Each of them is rotated in the opposite direction to cut and open the envelope L inserted between the cutters 35 whose blade edges are in close contact with each other.

The adjusting guide means 10 is the case body 1.
By sliding the back and forth of the cutting opening 4 and adjusting the gap between the position of the cutter 35 and the opening / cutting edge portion of the envelope L to be cut and removed, which is inserted in the opening / closing opening 4. The cutting width from the edge is set.

<Case Body> The case body 1 is formed into an internal cavity having an opening 4 at the front by joining the upper and lower case frames 2 and 3 to each other. The drive mechanism 30 is housed in the internal cavity.

The rear part of the case body 1 is formed in a battery box 5 in which a predetermined dry battery B is housed, and is opened and closed by attaching and detaching a box lid 6 (see FIGS. 2 and 5).

The case body 1 itself is formed in such a size that it can be grasped by fingers, and as shown in FIG. 5, it is inside a slide operation port 7 formed in the upper wall of the upper case frame 2. The adjusting guide means 10 itself can be slid back and forth by a pressing slide operation of an operation projection 15 which will be described later.

The opening 4 is provided at the front of the case body 1.
The opening is formed so that it is hollowed out when viewed from the side. A switch lever 36 serving as a switch for the cutter 35 and the drive mechanism 30 is exposed to the opening 4 and the cut edge of the envelope L to be opened is brought into contact with the inner portion of the opening 4. The adjusting guide means 10 for positioning and guiding the L at the same time is fixed in the case body 1 itself by being incorporated in the upper case frame 2, for example.

The upper and lower surfaces of the opening 4 are covered with a cover 8 for concealing the upper and lower surfaces of the upper and lower case frames 2 and 3, respectively, so that the inserted envelope L is smooth on the lower cover 8. To the outside of the opening 4 along the upper and lower surfaces of the cover 8 as it is. Moreover, the opening 4 portion of the side face of the case body 1 which is an inlet into which the envelope L is inserted is opened in a trumpet shape which gradually expands when viewed from the front, and facilitates the insertion of the envelope L (FIG. 3, FIG. (See FIG. 5).

<Adjustment Guide Means> The adjustment guide means 10 is provided at the innermost position of the opening 4 and the opening 4 is opened.
Upright regulation plate 1 that slides back and forth in the depth direction
1 and a slide operation plate 12 connected to the upper part of the regulation plate 11 and arranged along the front-back direction of the case body 1.
And a guide ridge 14 projecting from the lower part of the regulation plate 11 so as to be fitted into the guide groove 13 formed in the surface of the cover 8.

The regulation plate 11 has a shape corresponding to the inner surface of the opening 4 as seen from the front (see FIG. 3), and the end surface of the envelope L to be inserted is brought into contact with the front. It

The slide operation plate 12 is integrally formed with the restriction plate 11 so as to be substantially L-shaped when viewed from the side from the upper end of the restriction plate 11 to the rear of the case body 1, and the slide operation port 7 is formed on the upper surface. Operating protrusion 15 located inside
Is provided so that the regulation plate 11 can be slid back and forth by pressing and sliding the operation projection 15.

The guide groove 13 and the guide ridge 14 are arranged in a pair on the left and right sides of the regulation plate 11, that is, before and after the opening L in the traveling direction of the envelope L.
Is provided so as to integrally project on the bottom surface of the regulation plate 11 so that the envelope L inserted and placed on the cover 8 does not get behind the regulation plate 11 from the gap between the bottom surface of the regulation plate 11 and the top surface of the cover 8. .

Further, guide plates 16 which are slidably guided along the left and right of the upper case frame 2 are continuously provided at the left and right ends of the restriction plate 11, and the front and rear slides along the depth direction of the restriction plate 11 at the opening 4 are performed. Make sure that the above is done smoothly (see Fig. 2).

In order to stop and position the slid regulation plate 11 at a predetermined interval, there is provided a positioning stop portion 21 utilizing the elastic force of the spring. For example, as shown in FIG. 1, the positioning stop portion 21 accommodates a coil spring 23 in an accommodating cylinder portion 22 that is continuously provided integrally with the slide operation plate 12, and the coil spring 23.
Due to the resilience of the ball, a ball 25 protruding from the upper end opening of the storage tube portion 22 via the slide tube 24 stored in the storage tube portion 22 is provided with a plurality of engagement holes 26 formed in the back surface of the upper wall of the upper case frame 2. It can be detached from either of the above. In addition, reference numeral 27 in the drawing indicates that the lower end surface of the storage cylinder portion 22 is in contact with
It is a slide shelf plate provided in the case body 1 and supports the coil spring 23 and the like housed in the housing cylinder portion 22.

The engaging hole 26 of the positioning stopper 21 is
The restriction plates 11 are arranged along the front-rear direction of the sliding case body 1, and the restriction plates 11 are positioned by clicking and stopping at appropriate positions by the forced slide operation by the slide operation plate 12. It is as a thing.

<Drive Mechanism> The drive mechanism 30 housed in the case body 1 reduces the drive force of the drive motor 32 fixed to the motor pedestal 31 fixed in the case body 1 and the drive motor 32. And a reduction gear means 33 for rotating (see FIGS. 1 and 2),
By being decelerated by the reduction gear means 33, the pair of upper and lower cutter shafts 34 are driven to rotate in opposite directions.

The pair of upper and lower cutter shafts 34, which are positioned and supported along the front and rear of the case body 1, are as shown in FIG.
It is mounted between the motor pedestal 31 and the walls of the reduction gear unit 33, and is driven by the reduction gear unit 33.
It is decelerated by the driving force from 2 and driven to rotate.

Cutter 3 fixed to the front end of the cutter shaft 34
Numeral 5 is positioned so as to face up and down inside the opening 4, and the peripheral edges thereof are overlapped with each other. Further, in order to ensure the reliability and ease of cutting, the traveling while cutting the envelope L to be opened. In order to move the outer peripheral edge, the outer peripheral edge is formed in a slightly uneven wave shape, and the outer peripheral edge is slightly formed, for example, 0.
It is bent to mesh with each other by about 2 mm.

A coil-shaped pressure contact spring 39 is attached to one of the cutter shafts 34 so that the outer peripheral edges of the upper and lower cutters 35 are in close contact with each other (see FIG. 2).

<Driving of Driving Mechanism and its Stop> On the other hand, the driving of the driving mechanism 30 is swung by the pressing action of the envelope L inserted into the opening 4 so that the switch is exposed inside the opening 4. The lever 36 is swingably supported against the elastic force of the spring 37.
Switch shaft 38 that swings integrally at the bearing part of the
In addition, the switch contact 41 of the drive motor 32 circuit is provided. That is, in this switch contact 41 structure, as shown in FIG. 3 and FIG. 4, a pair of switch pieces 43 for opening and closing the drive motor 32 circuit are brought into contact with a tubular slip ring 42 covered with the switch shaft 38. The other switch piece 43 is positioned on an insulating protrusion 44 formed on the switch shaft 38, and separated from the protrusion 44 by the rotation of the switch shaft 38 accompanying the swing of the switch lever 36. The slip ring 42 is brought into contact with the surface of the slip ring 42.

In this switch contact 41 structure, the protrusion 44 is provided so as to protrude from the peripheral surface of the switch shaft 38 which is located at the front side in the swing direction of the switch lever 36. Before the switch lever 36 swings, the drive motor 32 circuit is turned off in a state where the slip ring 42 pushes the switch piece 43 elastically urged away from the slip ring 42 to turn off the drive motor 32 circuit. When the protrusion is retracted by the swinging rotation, it is assumed that the switch piece 43 comes into contact with the slip ring 42 by its own repulsive action and turns on the drive motor 32 circuit.

Therefore, when the envelope L is inserted into the opening 4, the switch lever 36 swings, and the switch shaft 38 also swings through this swing, so that the protrusion 44 causes the slip ring 42 to move away from the slip ring 42. Switch piece 4 that has been separated
3 is in contact with the slip ring 42. Then, the switch contact 41 closes the drive motor 32 circuit, and the drive motor 32 is driven. When the envelope L is separated from the opening 4, the switch lever 36 returns to the original position by the elastic force of the spring 37, and the drive motor 32 circuit is opened to prepare for the next operation.

<Example of Use> In the present invention configured as in the above-described embodiment, when using the invention, the operating projection 15 is pushed and slid from the outside of the case body 1 in accordance with the opening cut width of the envelope L. The regulation plate 11 in the adjustment guide means 10 itself is moved forward and backward along the front and rear of the case body 1, and the gap between the regulation plate 11 that slides in the depth direction at the inner part of the opening 4 and the cutter 35 that does not move is set. Set.

At this time, in the case of a normal envelope L which requires a small cutting width, the restriction plate 11 is moved to the front part of the opening port 4 and used at the forward position, and the envelope L having a large cutting width is used. In this case, the regulation plate 11 is moved to the inner part of the opening 4 and used in the retracted position. The sliding operation of the regulation plate 11
The guide projection 14 fitted into the guide groove 13 in the cover 8 in the opening 4 allows smooth operation without rattling.

Next, when the opening edge portion of the envelope L is inserted into the opening 4 through the opening of the wide opening 4 of the case body 1 and the switch lever 36 is swung, the switch contact 41 is turned on. As a result, the drive motor 32 circuit is closed and the drive motor 32 is driven. The drive motor 32 drives the pair of upper and lower disk-shaped cutters 35 to rotate in mutually opposite directions, and the cutting edge thereof starts the opening and cutting operation of the envelope L.

At this time, the envelope L inserted into the opening 4
Does not sink into the lower side of the regulation plate 11 by the guide ridge 14 at the lower end of the regulation plate 11 and the edge of the regulation plate 11, and the insertion position is reliably set and positioned.

At the same time as the opening and cutting, the envelope L or the device of the present invention may be moved so that the envelope L can be moved forward along the surface of the cover 8 of the opening port 4. As the envelope L is opened, the envelope L is opened. The edge portion is opened and cut by the cutter 35 with a predetermined cutting width.

The opened and cut portion to be cut and removed is discharged and guided to the outside of the case body 1 as it is by the cover 8 portion in front of the cutter 35, and the envelope L is opened.

[0044]

The present invention is constructed as described above, and therefore, since the opening / cutting width for the envelope L can be adjusted variously, it has a folding lid structure, a gluing structure and other various sealing structures. These can be opened in correspondence with the envelope L of the above, and the opened end edge portion after cutting is smoothly removed to the outside of the case body 1 by the cover 8 portion in front of the cutter 35, so that it can be surely not entangled with the cutter 35. It can be cut and removed.

That is, this is because the present invention has the opening 4
Restriction plate 1 positioned at the back to position the edge of the envelope L
This is because 1 can be slid forward and backward in the depth direction of the opening port 4, and the opening edge of the opening port 4 where the opening edge of the envelope L abuts against the stationary cutter 35 that opens and cuts the envelope L. By moving the position of the regulation plate 11 forward and backward along the depth direction of the opening 4, both
This is because it is possible to adjust the distance between the 1,35.

In addition, a guide groove 13 is formed on the surface of the cover 8 in the opening 4 and a guide projection is provided below the regulating plate 11 so that the guide groove 13 can be slidably fitted into the guide groove 13. Since the envelope L inserted into the cover 8 is provided with 14, the end edge of the envelope L does not go under the regulation plate 11, and the cutting position is always fixed by the regulation plate 11 which is regulated. Further, not only does sliding resistance between the surface of the cover 8 and the lower portion of the regulation plate 11 not occur, the traveling movement of the envelope L accompanying the rotation of the cutter 35 is not only smoothed but also the regulation plate 11 itself slides. When this happens, make it smooth without rattling,
Make the cutting width adjustment quick.

Further, the drive motor 3 in the drive mechanism 30
The two-circuit switch contact 41 structure is provided on a switch shaft 38 that swings integrally with a switch lever 36 exposed in the opening 4, and is driven by a tubular slip ring 42 that covers the switch shaft 38. A pair of switch pieces 43 for opening and closing the circuit of the motor 33 are brought into contact with each other, and one of the switch pieces 43 is placed on an insulating protrusion 44 protruding from the switch shaft 38 to swing the switch lever 36. By the rotation of the switch shaft 38 that accompanies the movement, the switch shaft 38 separates from the protrusion and comes into contact with the slip ring 42 surface.
Tilting of the switch lever 36 due to the insertion of the envelope L,
The opening and closing of the drive motor 32 circuit is reliably performed by the return of the switch lever 36 that the envelope L has disappeared due to the end of cutting after insertion, and since the structure is simple, there are few electrical contact failures. , Works reliably.

In front of the cutting direction of the cutter 35, since the cover 8 for closing the opening portions of the upper and lower edge surfaces of the opening 4 is provided, the unsealed cutting edge portion after cutting is provided on the surface of the cover 8. By guiding and traveling together, this can be smoothly guided out of the case body 1 as it is.
Therefore, unlike the conventional case, the opening / cutting edge portion after the cutting is not entangled with the cutter 35, which makes it difficult to perform the subsequent cutting / opening work, and allows the continuous opening / cutting work to proceed.

Not only that, the drive mechanism 30 including the drive motor 32 which is a drive portion, the reduction gear means 33 for reducing the drive force thereof, and the cutter 35 rotated in the opposite directions by the drive mechanism 30 are respectively the case body 1. Is fixed to the inside of the control plate 11 against these 32, 33, 35.
Since only one slides, the structure can be simplified, which greatly helps to downsize the entire device and facilitates a portable and compact design.

The slide guide of the regulation plate 11 itself located at the inner part of the opening 4 is connected to the upper portion of the regulation plate 11, and the slide operation plate 12 arranged along the front-rear direction of the case body 1 is Since the operation projection 15 located in the slide operation port 7 opened in the upper case frame 2 of the body 1 is pushed and slid, the guide protrusion 14 protruding from the lower portion of the regulating plate 11 is formed in the cover 8 by recessing. In combination with the fact that it is fitted in the guide groove 13, it can be carried out very easily, and the regulation plate 11 itself is slid while firmly supported, and the sliding is smooth and reliable.

Further, since the envelope opening device according to the present invention is constructed as a handy type portable, it is easy to handle and structurally simple, so that it can be provided at a low cost. Play.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view.

FIG. 2 is a vertical side view along the front-rear direction.

FIG. 3 is a cross-sectional view taken along the left-right direction of the cutting portion.

FIG. 4 is a perspective view of a switch contact.

FIG. 5 is a perspective view.

[Explanation of symbols]

 B Dry Battery L Envelope 1 Case Body 2 Upper Case Frame 3 Lower Case Frame 4 Opening Port 5 Battery Box 6 Box Lid 7 Slide Operation Port 8 Cover 10 Adjustment Guide Means 11 Restriction Plate 12 Slide Operation Plate 13 Guide Groove 14 Guide Protrusion 15 Operation Protrusion 16 Guide plate 21 Positioning stop portion 22 Storage cylinder portion 23 Coil spring 24 Slide cylinder 25 Ball 26 Engagement hole 27 Slide shelf plate 30 Drive mechanism 31 Motor pedestal 32 Drive motor 33 Reduction gear means 34 Cutter shaft 35 Cutter 36 Switch lever 37 Spring 38 Switch shaft 39 Pressure contact spring 41 Switch contact 42 Slip ring 43 Switch piece 44 Projection

Claims (4)

[Scope of utility model registration request] 1. A pair of upper and lower disc-shaped cutters arranged in an opening are rotated in opposite directions by a driving force of a drive motor built into a case body, and a predetermined envelope inserted and moved between the cutters is formed. An envelope opening device for cutting and opening, wherein a regulating plate located at the inner part of the opening for positioning the edge of the envelope is slidable in the depth direction of the opening. 2. An adjusting guide means for sliding the regulation plate is a standing regulation plate that slides back and forth at the innermost position of the opening, and is connected to the upper portion of the regulation plate, and extends along the front-back direction of the case body. The envelope opening device according to claim 1, further comprising an externally operated slide operation plate arranged. 3. A guide ridge, which is slidably fitted in a guide groove formed in a cover surface provided on the lower surface of the opening, is provided on the lower portion of the regulation plate. Or the envelope opening device according to 2. 4. A tubular slip ring, wherein a switch contact of a drive motor circuit is provided on a switch shaft that swings integrally with a swinging switch lever facing the opening, and the switch shaft covers the switch shaft. A pair of switch pieces that opens and closes the drive motor circuit are brought into contact with each other, and one of the switch pieces is placed on the insulating protrusion protruding from the switch shaft. The envelope opening device according to any one of claims 1 to 3, wherein the device is separated from above the protrusion by the rotation of the switch shaft and comes into contact with the slip ring surface.