JP3295220B2 - Card shredder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card shredder suitable for use, for example, when discarding used telephone cards and the like.

[0002]

2. Description of the Related Art Conventional shredders are used for shredding and discarding confidential documents and confidential documents, and it is well known in recent years that they have become a necessity in offices and the like. Such a shredder usually cuts a waste document into a strip of paper by a pair of roller cutters having a plurality of cutting edges, and introduces the paper into a waste box disposed below the roller cutter. hand,
Depending on the size of the waste documents and the size of the waste box,
Most of them are relatively large.

[0003]

Recently, malicious crimes of forging used telephone cards have become a social problem. The background is that no appropriate disposal treatment measures for used telephone cards have been proposed. Here, since the telephone card is usually used when the frequency becomes 0, it is almost always discarded near a telephone booth or a public telephone placed outdoors. By paying attention to this point, if the above-described shredder is installed in a place where a public telephone is arranged, a used telephone card can be appropriately shredded and discarded, and its abuse can be avoided. Has been proposed.

However, since the conventional shredder is relatively large, even if it is installed as an option in each telephone box, for example, it is difficult to secure a place and a huge cost is required. On the other hand, a telephone card can be easily restored simply by shredding it, so another disposal process is required to make it impossible to forge. Therefore, a shredder that satisfies such a demand is not currently provided.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a compact structure corresponding to the disposal of cards and the like, and to cut the cards and simultaneously deform the cut pieces. It is an object of the present invention to provide a card shredder that can be used.

[0006]

According to a first aspect of the present invention, there is provided a card shredder which cuts an inserted card in a traveling direction to form a plurality of cut pieces in a lateral direction. and a gear pairs to deform bite at least a portion of the cut piece of card, the cut
Pairs of turns intersecting each other and rotating in opposite directions.
It consists of a rolling blade and at least two pairs of cutters
At least three cards in the horizontal direction with respect to the direction of travel
And cut it between the left and right cutters.
It is characterized by interposed gears .

[0007]

According to a second aspect of the present invention, in the first aspect of the present invention, one pair of rotary blades and one pair of gears are supported on one shaft, and the other rotary blade is connected to the other rotary blade. The other gear is supported on another shaft, and the rotary blade and the gear supported on the same shaft are connected. Claim 3
The invention described in (1) cuts the inserted card in the traveling direction.
A cutter that cuts into multiple cut pieces in the left-right direction
To deform by biting at least some of the cut pieces of the
And a pair of rotating blades.
One of the gears is supported on one shaft, while the other is
And the other gear are supported on another shaft, and are supported on the same shaft.
The rotating blade and the gear are connected. According to a fourth aspect of the present invention, in the first aspect of the present invention, a gap is formed between the rotary blade and the gear supported on the same shaft.

According to a fifth aspect of the present invention, an inserted car
Cut in the direction of travel,
Bit and at least a part of the cut piece of the card.
And a pair of gears that deform by inserting
That a gap was formed between the supported rotary blade and the gear
Features. According to a sixth aspect of the present invention, in any one of the first to fifth aspects, a circumferential groove is formed on an outer periphery of at least one of the gears. According to a seventh aspect of the present invention, the inserted
Cut in the horizontal direction to cut multiple
Cutter to be a piece and at least a part of the cut piece of the card
And a pair of gears that engage and deform
It is noted that a circumferential groove was formed on the outer circumference of one of the gears.
It is a sign. The invention described in claim 8 is claim 6 or
The invention according to claim 7 is characterized in that a scraper engaging with the groove is provided.

[0010]

According to the present invention, there is provided a card shredder of the present invention.
According to the invention described in the above, for example, when a card is manually inserted, the inserted card is at least two pairs of left and right.
The intersection of the rotating blades and the pair between these left and right rotating blades
The rotating blades and the gears are
Sent with. And this card is left and right
The cutter cuts in the direction of travel and
At least three cut pieces, while the two pairs of left and right rotations
The cuttings between the blades are deformed by the meshing of the gear teeth.

[0011]

According to the second and third aspects of the present invention, one pair of rotary blades and one pair of gears are supported on one shaft, and the other rotary blade and the other gear are connected to each other. By supporting the rotating blade and the gear supported on another shaft and connected to the same shaft, for example, when one of the paired gears is rotated by driving means such as a motor, the rotation is , While simultaneously rotating the two gears, the two rotating blades rotate in opposite directions while intersecting each other.

According to the fourth and fifth aspects of the present invention, the clearance is formed between the rotary blade supported on the same shaft and the gear, so that after the card is inserted, the rotary blade is paired with the rotary blade. The part between the contacting part and the part that contacts the gear is
No external force is exerted by the gear and the rotary blade, so that the edge of the cut piece deformed at the meshing portion of the gear is irregularly deformed when the force is actually applied by the gear. Deform to.

According to the sixth and seventh aspects of the present invention, since the circumferential groove is formed on the outer periphery of the gear, when the cut piece is introduced into the meshing portion of the gear, the cut piece comes into contact with the cut piece. Since the area of the gear teeth is reduced, the load when the meshing portion deforms the cut piece is reduced. Claim 8
According to the invention described in the above, by providing the scraper engaging with the groove, the cut piece introduced into the meshing portion of the gear will be reliably discharged by the scraper, therefore, the cut piece to the gear Entanglement is prevented.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 are views showing an embodiment of the card shredder 1 according to the present invention. FIG. 1 is a plan view of the card shredder 1 with the upper lid removed and viewed from above.
FIG. 2 is a sectional view taken along line II of FIG. 1.

In these figures, reference numerals 2A and 2B denote plate-shaped frames, which are attached to a casing, which will be described later, by attaching means (not shown). The frames 2A and 2B are located between the two. Multiple shafts 3
Are located parallel to each other via
Each frame 2A, 2
B attached.

Further, between each frame 2A and 2B, 2
The two fixed shafts 11A and 11B are erected and fixed parallel to each other and at a predetermined interval. These fixed shafts 11A, 11
B is attached by fitting the E-ring 12 with both ends slightly projecting outside the frames 2A and 2B. Gears 13A and 13B are fitted to the fixed shafts 11A and 11B, respectively, so as to be meshable with each other and rotatably fitted to the fixed shafts 11A and 11B. Is
The gears 13A, 13A are
B, and rotatable rotary blades 15, 16 are provided in parallel with the fixed shafts 11A, 11B. These rotary blades 15 and 16 are two right rotary blades 15 in FIG.
A and 15B, two rotary blades 16A and 16B on the left side,
Each pair crosses each other, and cutters 17,
18. A sleeve 19 is externally fitted between the outside of each of the rotary blades 15 and 16 and each of the frames 2A and 2B, and the sleeve 19 is provided with the gears 13A and 13B and the cutters 17 and 1.
8 in the axial direction. In FIG. 1, the teeth of the gears 13A and 13B and the blades of the cutters 17 and 18 are not shown for clarity.

Here, the addendum circle of each of the gears 13A and 13B is formed smaller than the outer diameter of each of the rotary blades 15 and 16, and the gear 13A and the rotary blades 15A and 16A externally fitted on the fixed shaft 11A. Is a gear 13B externally fitted to the fixed shaft 11B.
1 is located slightly to the right of the rotary blades 15B and 16B in FIG. 1. The meshing portion of the two gears 13A and 13B and the intersection of the two cutters 17 and 18 are fixed to the fixed shafts 11A and 11B.
It is located on a straight line parallel to B. Each gear 13
The teeth of A and 13B may be formed with notches for preventing slippage by using a tool such as knurling.

In addition, what is indicated by reference numeral 21 in the figure is a drive motor mounted outside the frame 2A and driven by a power supply (not shown). The drive motor 21 is provided with a rotating shaft 22a that rotates in a fixed direction (the direction of arrow X in FIG. 2) as the drive motor 21 is driven, and a gear 13C is fixed to the rotating shaft 22a. ing. The gear 13C meshes with the gear 13A, and the three gears 13A to 13C form a gear train. Therefore, when the drive motor 21 is driven, the rotation shaft 22a and the gear 13C
Rotates in the direction of arrow X, and the rotation of gear 13C causes gear 13A to move in the direction of arrow Y in FIG.
B rotate in the direction of arrow Z in FIG. In FIG. 1, the teeth of the gear 13C are not shown for clarity.

Since the rotating shaft 22a and the gear 13C rotate the gears 13A and 13B, other means may be used as long as the drive motor 21 rotates the gear 13A or the gear 13B. it can. For example, a fixed shaft 11A is used as a rotation shaft, and a gear 15A,
Means for fixing the rotary blades 15A and 16A may be used. on the other hand,
Each of the frames 2A and 2B is provided with a card insertion portion 31. The insertion portion 31 is provided with the gears 13A, 13A.
B is located parallel to a straight line passing through the intersecting portion of each of the cutters 17 and 18 with the cutter 17 and 18, and the entrance side of the card forms a wide opening, and the width gradually decreases toward the exit side of the card.
The outgoing end faces toward the meshing portion and the crossing portion.

The insertion section 31 is provided with a first limit switch 32. The contact 32a of the first limit switch 32 is provided on the output side of the insertion portion 31 and has elasticity, and normally closes a part of the output side by this elasticity. On the other hand, a second limit switch 34 is supported and fixed to the frame 2B, and a contact 34a of the second limit switch 34 is connected to the gear 13
It comes into contact with the projection 33 provided on C. And these first and second limit switches 33, 34
Is connected to the power supply of the drive motor 21. The power supply is turned on when the first limit switch 33 is turned on, while the power supply is turned off when the second limit switch 34 is turned on. Therefore, when a card is inserted into the insertion section 31, the end of the card comes into contact with the contact point 32a, the outlet side is opened, and the first limit switch 32 operates. By the operation of the first limit switch 32, the drive motor 21 is driven to rotate the gear train, the gear 13C makes one rotation, and the projection 33 contacts the contact 34a of the second limit switch 34. The switch 34 operates to stop driving the drive motor 21.

The components described above are integrated into a casing 35 of the card shredder 1, and a box-shaped waste receiver 36 is provided below the casing 35. Therefore, the card inserted from the insertion section 31 is provided with the gears 13A and 13B and the cutter 1
After passing through 7, 18, the waste is received in the waste receptacle 36.

The length of one rotation of the gear 13C is as follows.
The contact 32a is longer than the vertical length of the card to be discarded (the length along the traveling direction of the card).
, The card 13C starts rotating, and after the card is completely cut, the rotation of the gear 13C stops. Therefore, it is preferable to select the size of the gear 13C according to the card to be actually discarded.

Next, the operation of the card shredder 1 having the above configuration will be described. In this example, a case where a used telephone card is discarded will be described. First, the card shredder 1 is in a state where the first and second limit switches 33 and 34 are normally off and the drive motor 21 is not driven.
In this state, for example, when the telephone card is manually held and inserted into the insertion portion 31, the end of the telephone card contacts the contact 32a, and the first limit switch 3
2 operates to turn on a power source (not shown), and the drive motor 21 is driven.

When the drive motor 21 is driven, the rotating shaft 22
As a rotates, the gear 13C rotates. The rotation of the gear 13C is transmitted to the two gears 13A and 13B. The two gears 13A and 13B rotate in opposite directions, and the cutters 17 and 18 also rotate. Then, when the telephone card is further pushed in, the ends of the two cards 13A,
13B and the intersection of the cutters 17 and 18, the telephone card is sent downward by these rotations.

Thereafter, the telephone card is inserted into each cutter 1
7, 18 and each cutter 17, 1
8 and the space between the cutters 17 and 18 are cut into three pieces. After the two outer cut pieces are completely cut off, they fall in a plate shape and fall into
6, the one cut piece between them is deformed by the meshing of the teeth at the meshing portions of the gears 13A and 13B, as shown in FIG. 36. At this time, in the telephone card, the part between the part contacting the cutters 17 and 18 and the part contacting the gears 13A and 13B by the spacer 14 is formed by the gears 13A and 13B and the cutter 1.
7 and 18 so that the edges of the cutting pieces between them actually have the gears 13A and 13A.
When deformed under the force of B, it deforms irregularly. Although the actual telephone card is extremely thin, the thickness is exaggerated in FIG. 4 for convenience of explanation.

As described above, after the telephone card is completely divided into three, the gear 13C just makes one revolution and the projection 33 contacts the contact point 34a of the second limit switch 34, whereby the second limit switch 34 Turn on. At this time, if no other telephone card is inserted into the insertion section 31 and the first limit switch 32 is turned off, the power supply (not shown) is turned off and the driving of the drive motor 21 is stopped. If another telephone card is inserted into the insertion section 31 and the first limit switch 32 is turned on, the drive of the drive motor 21 is continued.

As described above, according to the card shredder 1, the telephone card can be cut and one of the cut pieces can be deformed, and the edge of the cut piece can be deformed. Since the phone card is irregularly deformed when used, forgery of a used telephone card can be reliably prevented. The deformation applied to the cut piece is
Since the rotation is performed by the gears 13A and 13B for rotating the cutters 17 and 18, there is no need to provide a special device for performing deformation. As a result, the entire card shredder 1 can be made compact, and a reduction in price can be promoted, so that versatility is improved. In particular, if the telephone card is installed as an option in each telephone box or the like, the used telephone card can be easily disposed of by personal recognition.

Although not particularly shown in FIGS. 1 and 2, as shown in FIG. 3, a groove 41 is formed along the circumferential direction of the gear 13A, and a scraper 42 engaged with the groove 41 is formed.
Is provided, the area of the teeth of the gear 13A that comes into contact with the cut piece is reduced, the load when the cut piece is deformed at the meshing portion can be reduced, and the cut piece introduced into the meshing portion is Since the scraps are reliably dispensed by contacting the scraper 42, it is possible to prevent the cut pieces from being caught in the gears 13A and 13B, thereby preventing the card shredder 1 from malfunctioning as much as possible.

Further, in the above-described embodiment, special mention has been made of the disposal processing of the telephone card, but the same effect can be obtained by applying the invention to the disposal processing of other cards.

[0031]

As is clear from the above description, the following effects can be obtained by the card shredder of the present invention. According to the first aspect of the present invention, the card can be cut and cut in the left-right direction, and the cut piece can be deformed. Forgery and the like can be reliably prevented. In particular, this claim 1
According to the invention, one card is cut more finely.
be able to. Is there a gear between cutters?
When the driving force is transmitted to this gear, the cutters on both sides are cut.
A good balance of power can be maintained.

According to the second and third aspects of the present invention, it is possible to rotate a pair of rotary blades simultaneously with rotating a gear, and to rotate the other gear by rotating only one of the gears. Therefore, efficiency can be promoted. Further, since the entire shredder can be made compact, the reduction in price can be promoted and the versatility is improved.

According to the fourth and fifth aspects of the present invention, since the gap is formed between the gear and the cutter, the edge of the cut piece can be irregularly deformed, thereby making it possible to particularly use the cut piece. When disposing of a used telephone card,
Restoration of the telephone card can be reliably prevented. According to the sixth and seventh aspects of the present invention, since the circumferential groove is formed on the outer periphery of the gear, the area of the tooth of the gear in contact with the cut piece is reduced, so that the meshing portion is transformed into the cut piece Can be reduced, and problems with the card shredder can be prevented as much as possible.

According to the eighth aspect of the present invention, since the scraper engaging with the groove is provided, the cut piece introduced into the meshing portion of the gear is reliably discharged by contacting the scraper. Therefore, it is possible to prevent the cut piece from being caught in the gear, and to prevent the card shredder from becoming defective as much as possible.

[Brief description of the drawings]

FIG. 1 is a top plan view of a card shredder described in this embodiment.

FIG. 2 is a sectional view taken along line II of FIG.

FIG. 3 is an explanatory diagram showing another configuration of the gear described in the embodiment.

FIG. 4 is an explanatory diagram showing a deformed state of the telephone card described in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shredder for cards 13A to 13C Gear 14 Spacer 15A to 16B Rotary blade 17, 18 Cutter 21 Drive motor 31 Insertion part 36 Debris receiver 41 Groove 42 Scraper

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-14757 (JP, A) JP-A-62-179036 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B02C 18/00-18/44

Claims (8)

(57) [Claims] 1. A cutter which cuts an inserted card in a traveling direction thereof to form a plurality of cut pieces in a left-right direction, and a pair of gears which bites and deforms at least a part of the cut piece of the card. The cutters intersect each other and
It consists of a pair of rotating blades that rotate in opposite directions.
At least two pairs of left and right cards
To make at least three cut pieces in the left-right direction.
A card shredder comprising a pair of gears interposed between the left and right cutters . 2. One pair of rotating blades and one pair of rotating blades
Gear and the other rotating blade and the other gear
Is supported on another shaft, and the rotary blade is supported on the same shaft.
The card shredder according to claim 1, wherein the card and the gear are connected . 3. The inserted card is cut in the traveling direction.
And a cutter that cuts into multiple cut pieces in the left and right direction
A pair that bites and deforms at least some of the cut pieces
A pair of rotating blades and one pair of gears are supported on one shaft, and the other rotating blade and the other gear are supported on another shaft. , features and to Luca over de for shredders that connects the rotary blade and a gear supported on the same shaft. 4. The card shredder according to claim 1, wherein a gap is formed between the rotary blade and the gear supported on the same shaft. 5. The inserted card is cut in the traveling direction.
And a cutter that cuts into multiple cut pieces in the left and right direction
A pair that bites and deforms at least some of the cut pieces
A rotating blade and a gear supported on the same shaft.
Features and to Luca over de for shredders that a gap is formed between the. 6. An outer peripheral surface of at least one of the gears has a circumferential direction.
Claim, characterized in that a groove 1 to claim 5
A card shredder according to any one of the above. 7. The inserted card is cut in the traveling direction.
And a cutter that cuts into multiple cut pieces in the left and right direction
Deformed by biting at least some of the cut pieces Let the pair
And at least one of the gears
Shredder for cards characterized by forming grooves in the directions
Da. 8. A device having a scraper engaged with said groove.
The card according to claim 6 or 7, characterized in that:
Shredder.