JP2587272Y2 - Rotating rubber stamp - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary rubber stamp.

[0002]

2. Description of the Related Art In a conventional rotary rubber stamp, a horizontal shaft having a plurality of rotors supported on a frame and a receiver are arranged vertically, and a printing belt is suspended between each rotor and the receiver. The printing belt is rotated by rotating the toothed disc integrated with the rotor (FIG. 20). In such a rotating rubber stamp, a clearance S is provided between the horizontal axis and the rotor in order to easily rotate the rotor, but the diameter of the horizontal axis is about 1/10 smaller than the diameter of the rotor. As a result, even with a small clearance, a large blur θ occurs in the horizontal axis direction (FIGS. 21 and 22). As a result, it is difficult to effectively transmit the rotational force of the rotor to the print belt because one side of the print belt floats and the engagement with the rotor decreases.
There is a disadvantage that the printing belt runs idle and the printing belt falls off the rotor. To improve the drawback, reduce the clearance. Increase the tension of the print belt. Increase the diameter of the horizontal axis. However, in the case of, the tightening of the rotor and the horizontal axis increases, and the smooth rotation of the rotor is hindered. In the case of, the smooth rotation of the rotor is prevented, and the printing belt is stretched or cut. In the case of (2), the blur θ is reduced and the above-mentioned disadvantage is eliminated, but when it is a finished product, it is heavy, the cost is high and it is difficult to handle (FIG. 23). A new disadvantage has arisen. In addition, when the conventional rotating rubber stamp is small, each rotor itself is small and thin, so that when rotating one rotor with a finger, the adjacent rotors may be mistakenly rotated at the same time. there were. Japanese Utility Model Publication No. 58-26126 discloses a device that solves the above-mentioned disadvantages. However, since the lower part of each rotor is held by a bearing member, the structure is complicated.
The number of parts was large and assembly was difficult. In addition, in a configuration such as Japanese Utility Model Publication No. 55-21818, the effect is not obtained unless the metal printing ring is heavy and has a large frictional resistance between the rotors unless a metal printing ring is used. It was appropriate. Of course, 55-218
The invention of No. 18 does not have a print belt suspended, and differs from the invention in the configuration, purpose and effect.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional disadvantages, the present invention is to provide a shaft or a shaft for holding a rotor while maintaining a certain clearance while minimizing blur. It is an object of the present invention to provide a rotating rubber stamp which does not require any member, and which can reliably rotate only a target rotor even if the rotating rubber stamp is downsized.

[0004]

The rotary rubber stamp according to the present invention is a rotary rubber stamp in which a printing belt is suspended between a plurality of rotors held at the upper part of the frame and a metal receiving member at the lower part of the frame. A convex portion and a concave portion are separately provided on both side surfaces of the rotor, and a knob portion is provided upright on one side surface, and a rotor located on the knob portion side of the rotor located at the center of the rotor. The rotor is provided with a bore larger than the knob of the rotor located at the center, and each rotor is connected by inserting the convex part of one rotor into the concave part of the other rotor. It is characterized in that both ends of the rotor are inserted and held in a concave portion and a convex portion provided in the upper portion of the frame, respectively, and the knob portion is viewed through a side hole provided in a side surface of the frame.

[0005]

According to the present invention, the rotating rubber stamp is the convex portion 3 of one rotor.
Are inserted into the concave portions 5 of the adjacent rotors, a plurality of rotors are sequentially inserted and connected in the same manner, and both ends of the connected rotors are respectively inserted into the convex portions 15 and the concave portions 16 provided on the upper portion of the frame. And hold the handle, looking the knob out of the frame from the side hole 14 provided on the side surface of the frame, mounting the receiving metal 17 at the lower part of the frame, and suspending the printing belt between the rotor and the metal receiving 17. And assembled. The rotating rubber stamp of the present invention is used by rotating the printing belt 21 by rotating the knob portion which is viewed outside the frame, but the adjacent rotor can be used smoothly without rotating. The following factors can be considered as a reason for this. (1) Since the convex body is provided near the outer peripheral surface of the rotor, the diameter D "(FIG. 24) of the virtual horizontal axis formed by the convex body is larger than the diameter D 'of the conventional shaft. Therefore, while having the same clearance as before, the rotor
Becomes smaller. Therefore, it is possible to always maintain the state in which the printing belt is suspended vertically toward the receiving member, so that the rotational force can be evenly transmitted to the entire printing belt. Therefore, since the printing belt can be surely rotated with a small rotational force, it is not necessary to apply extra tension to the printing belt. (2) Since the contact area between the convex portion and the concave portion is reduced,
The frictional resistance between the rotors could be minimized. (3) Due to the synergistic effect of the above (1) and (2), it is only necessary to apply a slightly large tension to the print belt to oppose the frictional resistance between the rotors, and only the target rotor rotates, Do not rotate adjacent rotors. (4) Since the knob is viewed outside the frame, only the target rotor can be rotated.

[0006]

FIG. 1, FIG. 2, FIG. 3, and FIG.
Shown in A, B, C, and D are rotors. The thickness of the rotors A and B is 2 mm, and the thickness of the rotor C is 2.5 mm
The thickness of the rotor D is 4 mm, and the diameters are all 10 mm. One side of each rotor has a length of 1.1.
mm, 1.45 mm diameter rod-shaped convex portions 3
Ke stands. 1mm deep and 1.5m wide on the other side
A groove-shaped concave portion 5 of m is provided in a donut shape near the circumference. Therefore, when the convex portion 3 is inserted into the concave portion 5,
A clearance of 0.1 mm can be obtained. Among the rotors, the rotors B and C are oppositely shaped round bar-shaped knobs 7 and 8 respectively.
Is erected. On the other hand, cylindrical knobs 6 and 9 are erected on the rotors A and D in opposite directions, and the central portions of the knobs 6 and 9 are penetrated with a diameter larger than the diameter of the knobs 7 and 8. ing. In addition, the center of the rotors A and D has a knob 7,
A bore 10 larger than the diameter of 8 is provided. Here, when the rotors are inserted and connected, the outer peripheral surfaces of the knobs 7 and 8 and the inner peripheral surfaces of the knobs 6 and 9 are set so as not to contact each other in order to smoothly rotate the rotors. Is preferred,
When the set dimensions are difficult, a protrusion is formed on either the outer peripheral surface of the knobs 7 and 8 or the inner peripheral surface of the knobs 6 and 9 to reduce the contact area, or one of the knobs is shaped like a cylinder. In addition, it is preferable to reduce the contact area by making the other knob portion a polygonal column. Numeral 11 denotes a projection for preventing slippage of the printing belt, which has a cross-sectional shape of an isosceles triangle and is provided in plural on the peripheral side surface of each rotor. As the material of the rotor, polypropylene, polyethylene, ABS resin, acrylic resin,
It can be manufactured using a synthetic resin such as a polyacetal resin.
Reference numeral 12 denotes a thin sheet serving as a partition for preventing the print belts from contacting each other, and is held by the convex portions 3. As the material of the thin sheet 12, the same material as that of the rotor can be used. FIG. 1 is a partially cutaway view of the present embodiment using four printing belts 21 and four rotors. The four rotors are a rotor B located at the center of each rotor,
The knobs 7 and 8 of C are inserted into the bores 10 of the rotors A and D, and the respective convex bodies 3 are inserted and connected to the concave parts 5 of the adjacent rotor. Reference numeral 13 denotes a frame, and a protrusion 15 provided on one inner surface and having the same shape as the protrusion 3 is provided with a rotor A.
Of the rotor D is inserted into the concave portion 5 of the same shape as the concave portion 5 provided on the other inner side surface.
Is inserted. Thus, by holding both ends of the connected rotors by the frame 13, the rotors are not separated. In addition, since each knob is viewed from the side hole 14 provided on the side surface of the frame 13, the knob can be operated from the outside of the frame to rotate each rotor. Also,
The frame 13 is fixed to the grip 19 with screws 20. As the material of the frame 13, the same material as the material of the rotor can be used. Reference numeral 17 denotes a receiving member, which has claws 18 provided at both ends, and is fitted to the lower end of the frame 13. The material of the receiver 17 may be any material that can be used normally, such as metal and synthetic resin. Each printing belt 21 is suspended between the receiver 17 and each rotor.

A second embodiment of the present invention is shown in FIGS. 5, 6, and 7. FIG. The description of the same configuration as that of the first embodiment will be omitted. Each rotor and the thin sheet are integrated. Further, a toothed disk-equipped rotor E in which a toothed disk is integrated is connected to the knob 9 side of the rotor D. FIG. 5 is a partially cutaway view of the second embodiment in which five print belts are suspended. Since the printing belt to be suspended on the toothed disk rotor E indicates the second digit of the Christian era and needs to be rotated only once every ten years, it is not usually used and is used as a toothed disk rotor. .

[0008] Another rotor that can be used with the present invention is shown. The description overlapping with the above embodiment is omitted. The rotor according to the third embodiment shown in FIG. 8 has a shape in which the convex portion 3 is provided with three raised portions 4 on the inner peripheral surface and the outer peripheral surface of the cylindrical body.
Have the same groove shape as in the first embodiment. Here, the effect of the present invention can be obtained even if the raised portion 4 is provided on only one of the inner peripheral surface and the outer peripheral surface. The rotor of the fourth embodiment shown in FIGS. 9 and 10 has a configuration in which the convex portion 3 is provided with three raised portions 4 on the outer peripheral surface of the cylindrical body, and the concave portion 5 is a circular concave portion. I have. In the rotor according to the fifth embodiment shown in FIG. 11, the convex portion 3 has a triangular prism shape, and the concave portion 5 has a circular concave portion. Here, the effect of the present invention can be obtained even if the convex portion 3 is a polygon such as a quadrangular prism. The rotor of the sixth embodiment shown in FIGS. 12, 13 and 14 has a shape in which the convex portion 3 is a cylindrical body and the concave portion is provided with three raised portions 4 on both inner wall surfaces of the groove. I have. Here, the effect of the present invention can be obtained even if the raised portion 4 is provided on only one of the inner wall surfaces. In the rotor of the seventh embodiment shown in FIGS. 15 and 16, the convex portion 3 is a cylindrical body, and the concave portion 5 has a shape in which three raised portions are provided on the inner wall surface of the circular concave portion. In the rotor of Example 8 shown in FIG. 17, the convex portion 3 is a cylindrical body, and the concave portion 5 is a quadrangular concave portion. Here, the effect of the present invention can be obtained even if the concave portion 5 is a polygonal concave portion such as a triangle or a hexagon.

Further, the rotor of the present invention is provided with an arbitrary number of protrusions 21 at one or more of the side surfaces 1 and 2, the end surface 3 'of the convex portion 3, and the bottom surface 5' of the concave portion 5, The contact resistance between adjacent rotors can be further reduced. FIG.
8, the rotor of the ninth embodiment shown in FIG. 19 has a configuration in which the convex portion 3 is provided with four raised portions 4 on the outer peripheral surface of the cylindrical body, and the concave portion 5 is closer to the center of the rotor. And three raised portions 4 provided on the inner wall surface of the groove. Here, the convex portion 3 has a shape in which four raised portions 4 are provided on the inner peripheral surface of the cylindrical body, and the concave portion 5 has three raised portions 4 on the inner wall surface of the groove far from the center of the rotor. The effect of the present invention can be obtained even if the shape is provided.
Further, four hemispherical projections 21 having a radius of 0.5 mm are provided on the end face 3 ′ of the projection 3 at equal intervals. Since the depth of the concave portion 5 is the same as the length of the convex portion 3, when the rotors are connected, the rotors are separated by 0.5 mm, and the contact resistance of the adjacent rotors is reduced. Become smaller. The shape of the protruding portion 21 can be a polygonal pyramid such as a triangular pyramid that makes a point contact, a small cylinder that makes a surface contact, or a vertex of a cross-sectional triangle that makes a line contact. These may be provided on the both side surfaces of the rotor, the end surfaces of the convex portions, and the bottom surfaces of the concave portions in an arbitrary arrangement such as radial, circumferential, arc, or linear.

[0010]

With the above configuration, the present invention has the following effects. I. The printing belt and the rotor can be reliably hooked, and the printing belt is prevented from falling off the rotor. In addition, the rotational force of the rotor can be effectively transmitted to the printing belt, thereby preventing the printing belt from running idle, extending, and breaking. II. Only the target rotor can be rotated, and the adjacent rotor is not rotated. III. Even if each rotor is small and thin, only the intended rotor can be rotated. IV, a horizontal shaft or a bearing member is not required, the structure is simple, it is easy to assemble, and an inexpensive rotating rubber stamp can be obtained. V, when one or more protrusions 21 are provided on any one of the side surfaces 1 and 2 of the rotor, the end surface 3 'of the convex portion 3, and the bottom surface 5' of the concave portion 5, the contact resistance of each rotor Can be further reduced, the rotation can be performed more smoothly, and the rotational force can be more reliably transmitted to the printing belt.

[0011]

[Brief description of the drawings]

FIG. 1 is a partially broken sectional view of a first embodiment.

FIG. 2 is a perspective view of a rotor portion according to the first embodiment.

FIG. 3 is an exploded perspective view of a rotor part according to the first embodiment.

FIG. 4 is a perspective view of a rotor C according to the first embodiment.

FIG. 5 is a partially broken sectional view of the second embodiment.

FIG. 6 is a perspective view of a rotor part according to the second embodiment.

FIG. 7 is an exploded perspective view of a rotor part according to the second embodiment.

FIG. 8 is a perspective view of a rotor according to a third embodiment.

FIG. 9 is a perspective view of a rotor side of a rotor according to a fourth embodiment.

FIG. 10 is a perspective view of a rotor side according to a fourth embodiment at a concave portion side;

FIG. 11 is a perspective view of a rotor according to a fifth embodiment.

FIG. 12 is a perspective view of the rotor of Embodiment 6 on the side of the concave portion.

FIG. 13 is a perspective view of the rotor of the sixth embodiment.

FIG. 14 is a partially broken sectional view of the sixth embodiment.

FIG. 15 is a perspective view of a rotor according to a seventh embodiment, on a side of a convex portion.

FIG. 16 is a perspective view of a concave portion of a rotor according to a seventh embodiment.

FIG. 17 is a perspective view of a rotor according to an eighth embodiment.

FIG. 18 is a perspective view of a rotor according to a ninth embodiment on the side of a convex portion.

FIG. 19 is a perspective view of a rotor according to a ninth embodiment on a concave portion side;

FIG. 20 is a partially broken sectional view of a conventional rotating rubber stamp.

FIG. 21 is a partially broken sectional view of a conventional rotor and shaft.

FIG. 22 is a partially broken sectional view of a conventional rotor, printing belt, and shaft.

FIG. 23 is a partially broken sectional view of a conventional rotor using a large-diameter shaft.

FIG. 24 is a partially enlarged view of the connected rotor of the first embodiment.

[Explanation of symbols]

 A, B, C, D Rotor E Rotor with toothed disk 1, 2 Side face of rotor 3 Convex part 4 Raised part 5 Concave part 6, 7, 8, 9 Knob 10 Medium hole 11 Protrusion 12 Thin sheet 13 Frame 14 Side hole 15 Convex part 16 Concave part 17 Receiving part 18 Claw 19 Grip part 20 Screw 21 Print belt

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotating rubber stamp having a printing belt suspended between a plurality of rotors held at an upper portion of a frame and a receiving member at a lower portion of the frame. Parts are provided separately and a knob is provided on one side, and the rotor located on the knob side of the rotor located at the center of the rotor is provided with a knob located at the center of the rotor. A large bore is provided, and each rotor is connected by inserting the convex part of one rotor into the concave part of the other rotor, and the both ends of each connected rotor are provided in the upper part of the frame. And a rotating rubber stamp characterized in that the knob is inserted into and held in the convex portion, and the knob portion is viewed through a side hole provided in a side surface of the frame.