JPH0356372Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a date stamp in which the outer periphery of the printing unit is completely covered.

[Conventional technology]

Figures 12 and 13 were originally filed by the applicant in 1982.
This shows a conventional example of the date stamp previously proposed in No. 203565, in which the printing unit 1 is built into the main case 2, the upper outer periphery of the printing unit 1 is the grip tube 3, and the lower end of the printing surface of the printing unit 1 is are each covered by cap 4. The printing unit 1 has a large number of printing belts 11 wrapped around a gate-shaped base frame 7 in parallel on the left and right, and each printing belt 11 can be rotated by hand using a rotation dial 9, and can only be moved up and down inside the main case 2. 2, and is constantly biased upward by a spring member 20, as shown in FIG. The cylindrical wall of the main case 2 has an operation window 15 at the top for operating the rotary dial 9.

In this way, the grip tube 3 is normally pushed down to the lowering limit position to close the operation window 15.
In this state, the printing unit 1 is pushed down against the spring member 20 by the adjustment screw 28 at the upper end of the grip cylinder 3, and the stamp surface at the lower end of the printing belt 11 group is on the fixed printing body provided at the lower end of the main case 2. It is flush with 36. When changing the stamp surface of the printing belt 11, that is, the date, the grip tube 3 is pulled up, the operation window 15 is opened, and the corresponding printing belt 11 is rotated using the rotary dial 9.

There, in order to maintain the attached state of the grip tube 3 and cap 4 to the main case 2, a rib 1 for preventing them from coming off is provided above the flange 18 of the main case 2.
2 is formed in a circumferential shape, and a circumferential groove 23 in which the rib 12 engages is formed on the inner circumferential surface of the lower end of the grip cylinder 3. Further, a rib 39 is provided in a circumferential manner below the flange 18 of the main case 2, and several engagers 40 that engage with the rib 39 are provided near the upper end of the inner surface of the cap 4.
form. Thus, the gripping tube 3 and the cap 4
Both were designed so that they could be opened up and down by forcefully pulling them out.

[Problem that the invention attempts to solve]

As mentioned above, in the case of a date stamp that is held in a state where the gripping tube 3 and the cap 4 are fitted into the main case 2 so as not to come off, the engagement force between the rib 12 and the circumferential groove 23 or between the rib 39 and the engaging element 40 is Although it depends on the size difference, for example, when trying to remove only the cap 4 when stamping, the grip tube 3 in the hand may also come off upward. When attempting to prevent this, a problem was found in that the engagement between the main case 2 and the grip tube 3 became too strong, making it difficult to remove the grip tube 3 when changing the date.

[Purpose of invention]

The present invention has been proposed to solve these problems.

An object of the present invention is to enable the grip tube 3 and cap 4 to be reliably engaged and held with respect to the main case 2 when not in use.

Another object of the present invention is to make it possible to easily remove and remove the cap when stamping, which is the most frequently performed operation, while holding the grip tube 3 so that it does not come off.

Still another object of the present invention is to enable the grip tube 3 to be disengaged from the main case 2 and easily lifted when changing the date.

[Means for solving problems]

In the date stamp of the present invention, the grip tube 3, which is opened and closed less frequently than the cap 4, is mechanically engaged and held in the main case 2, and the cap 4 is inserted into the main case 2 by fitting as in the conventional case. It is designed to be stopped and held.

Specifically, as shown in FIG. 1, the grip tube 3 and the main case 2 are reliably connected via the lock ring 41, and the lock ring 41 is rotated in the circumferential direction to lift the grip tube 3. To be able to switch between a possible unlocked state and a locked state in which the grip cylinder 3 is surely prevented from coming off. For this purpose, the lock ring 41 is rotatably supported on either the main case 2 or the grip tube 3, in the example shown, the main case 2, and the lock ring 41 is supported on the engagement piece 52 provided on the other grip tube 3. 41 is adapted to engage with the engagement piece 52.

[Effect]

When the grip tube 3 is integrated with the main case 2, the lock ring 41 is rotated to abut and engage with the mating engagement piece 52 as shown in FIG. This state, that is, lock ring 4
When 1 is in the lock position, lock ring 4
The locking piece 43 and the engaging piece 52 on the first side are engaged with each other, and the locking ring 41 is supported so that it cannot move up and down with respect to the main case 2, so even if you try to remove the gripping tube 3 upward, I can't remove it. Even if the cap 4 is removed when it gets clogged and the stamp is stamped,
Only the cap 4 can be removed while leaving the grip cylinder 3 intact.

When the locking ring 41 is rotated to the unlocked position, the locking piece 43 is retracted from the space above the engagement piece 52 to a circumferential position as shown in FIG. In this state, the grip tube 3 can be added to the main case 2 and pulled up freely, making it easy to change the date.

〔effect〕

As explained above, in the present invention, the grip cylinder 3 is held in the main case 2 via the lock ring 41 so that it does not come off, and the lock ring 4
The grip cylinder 3 can be easily removed from the main case 2 by simply rotating the grip cylinder 1 to the unlocked position. Therefore, it is possible to securely remove only the desired side of the grip tube 3 and cap 4 from the main case 2, and quickly stamp a stamp or change the stamp surface on the printing belt 11, resulting in a date display that is easy to use and has excellent operability. You can get a mark.

[Embodiment 1] Figures 1 to 9 show a first embodiment of a date stamp to which the present invention is applied, which basically consists of a printing unit 1, a main case 2 that accommodates it, and a main case. The main case 2 has a grip tube 3 and a cap 4 which are fitted onto the outside of the main case 2, respectively, and the outer surface of the printing unit 1 is completely covered by the main case 2, the grip tube 3 and the cap 4.

In FIG. 2, the printing unit 1 has a base frame 7 that is gate-shaped when viewed from the front and has a top plate and left and right side plates, and a support shaft 8 is installed in the upper part between the left and right side plates of the base frame 7. On this support shaft 8, five rotary dials 9 are rotatably supported side by side in the figure, and a bridge 10 having a U-shaped cross section in side view is installed at the bottom between the left and right side plates of the base frame 7. , an endless rubber printing belt 11 is wound between each rotary dial 9 and the bridge 10, and each printing belt 11 can be manually fed and rotated individually by the rotary dial 9. On the outer surface of each printing belt 11, block blocks for displaying the year, month, day, etc. are engraved at regular intervals.

The main case 2 as a whole is formed into a cylindrical shape with a bottom, and an operation window 15 for rotating the rotary dial 9 is formed at the front and back of the upper part of the cylindrical body 14, and the center of the cylindrical bottom wall 16. It is a plastic molded product having a rectangular belt passage opening 17 through which the lower ends of the printing belts 11 go in and out.

A printing unit 1 is housed in the main case 2 so as to be vertically movable. In FIG. 3, vertical guide grooves 19, 19, into which the base frame 7 of the printing unit 1 is fitted, are formed in the inner surface of the cylinder 14 to face each other. It moves up and down along the guide grooves 19, 19 in a non-rotating manner between a printing position where it protrudes downward from the opening 17 and a stamp surface changing position where it rises to an area where the printing belt 11 can rotate.

A spring member 20 is attached to the inner bottom of the main case 2 to push up the printing unit 1.
The limit of upward movement of the printing unit 1 is regulated by a stopper 22 made of wire provided inside the upper end of the printing unit 4.
The upward movement limit of the printing unit 1 is the stamp surface changing position, and in this state, the rotary dial 9 faces the operation window 15, and each printing belt 11 can be rotated manually.

The grip cylinder 3 covers the upper outer periphery of the printing unit 1 including the rotary dial 9, and opens and closes the operation window 15 of the main case 2. That is, the grip cylinder 3 has a cylinder wall 25 which is fitted onto the cylinder body 14 of the main case 2 in a substantially intimate manner, an upper wall 26 that is continuous to the upper end of the cylinder wall 25, and an upper wall 26.
A guide post 27 protrudes downward from the center of the
It is a plastic molded product having

An adjustment screw 28 is screwed into the guide post 27. As shown in FIG. 2, when the grip cylinder 3 is pushed to the lower limit position, the lower end of the adjustment screw 28 comes into contact with the upper surface of the base frame 7, and the entire printing unit 1 is pressed against the spring member 20 to print. Press down into position. The adjusting screw 28 can be rotated from the outside and above, and by adjusting the screwing amount, the height of the stamp surface at the lower end of the printing belt 11 can be adjusted.

The grip tube 3 is externally fitted onto the main case 2 so as to be movable up and down but non-rotatably. In FIGS. 1 to 3, guide frames 30, 30 having a T-shaped cross section are provided on the outer surface of the main case 2 at opposite left and right portions, and correspondingly, guide frames 30, 30 are provided on the cylinder wall 25 of the grip cylinder 3. Slits 31 , 31 that engage the slits 30 , 30 are formed upward from the lower end of the cylinder wall 25 , and the grip cylinder 3 is guided by the guide frame 30 and the slits 31 so as to be prevented from rotating relative to the main case 2 . Move up and down.

In FIG. 5, the guide frame 30 and the slit 31
Near the lower end, there is a bulge 3 for holding the gripping tube 3 in position when it is pushed to the lower limit position.
a and an engaging recess 31a are respectively formed. This means of holding at the lower limit is just in case;
It doesn't have much significance in its existence. In the present invention, the gripping cylinder 3 at the lowering limit is
This is because it is designed to be held in the main case 2.

6 and 7 on the inner surface of the upper end of the guide frame 30.
As shown in the figure, a retaining piece 32 is formed to protrude left and right, and by receiving and supporting the lower end wall 33 of the groove 31b formed across the slit 31, the holding tube 3 is pulled up and the operation window 15 is opened. When this happens, the grip cylinder 3 is prevented from being unexpectedly removed from the main case 2. Although this retaining means is not limited to the illustrated example, it is important in preventing separation of the grip cylinder 3. In this way, the grip tube 3 reaches its lower limit where its lower end opening contacts the flange 18 of the main case 2, and the lower end wall 33 reaches its lower limit when the retaining piece 32 contacts the flange 18 of the main case 2.
It is supported by the main case 2 so as to be able to move up and down between the upper limit and the upper limit.

In FIG. 2, a fixed print body 36 made of rubber is attached to the lower end of the main case 2 via a print holder 35. A transparent egress window 37 is provided in the center of the fixed print body 36 to allow the print belt 11 to move in and out.
A unique print is engraved across this exit/exit window 37.

In the same FIG. 2, the cap 4 that covers the bottom stamp surface of the fixed print body 36 is formed into a cylindrical shape with a bottom, and a sponge-like ink storage mat 38 is laid on the inner bottom of the cap 4. The cap 4 can be removably fitted onto the lower end of the main case 2 from below, and in the attached state, the fixed print body 36 and the lower end stamp surface of the print belt 11 come into contact with the ink storage mat 38. Therefore, the cap 4 can be removed and the stamp can be stamped as is when the cap is used next time. It has a moderation means for maintaining the state in which the cap 4 is attached to the main case 2. In the figure, a circumferential rib 39 is provided on the barrel 14 of the main case 2, and engages with the rib 39 on the inner surface of the cap 4. A plurality of engaging elements 40 are respectively provided, and the cap 4 can be attached to and detached from the main case 2 by being press-fitted and forcefully removed.

This invention is characterized in that, in the date stamp as described above, the grip cylinder 3 is held in the main case 2 via a lock ring 41 so as not to come off.

In FIGS. 1, 4, and 6, claw grooves 42 are formed over a predetermined range at two locations on the inner wall of the locking ring 41 that face each other, allowing entry of a locking claw 50, which will be described later. A lock piece 4 that engages with an engaging piece 52 of a lock pawl 50 at one end of the groove 42
3 is formed to protrude inward from the pawl groove 42. Furthermore, a ring support pawl 44 is formed at the bottom of the protruding base end of the lower edge of each lock piece 43 to project further inward from the lock piece 43.

The lock ring 41 is rotatably incorporated into the main case 2. An arc-shaped support flange 46 for supporting the lock ring 41 is formed on the lower outer periphery of the flange 18 of the main case 2 and extends across two installation ports 47 . The outer diameter of the imaginary edge of the support collar 46 is smaller than the spacing between the lock pieces 43 and larger than the spacing between the ring support claws 44. Therefore, after aligning the ring support claw 44 with the installation opening 47 and pushing up the lock ring 41, when the ring 41 is twisted counterclockwise relative to the main case 2, as shown in FIG. The ring support pawl 44 is received and supported by the support collar 46 to prevent it from falling off downward, and in this state, the step wall 43a continuous to the upper edge of the lock piece 43 faces the lower surface of the flange 18 with a very small gap left. Since it is, Lock Ring 4
1 does not move upward. lock ring 4
In order to abut and restrict the operation limit in the unlocking direction of each support collar 46, a stopper wall 48 is provided extending from one end of each support collar 46 facing the installation opening 47 to the lower surface of the flange 18.
is installed protrudingly.

Corresponding to the lock piece 43 of the lock ring 41,
Two locking claws 50 are provided at the lower end of the gripping cylinder 3 and protrude downward, sandwiching each slit 31 therebetween. A lock piece 43 is attached to one side of the lock pawl 50.
forming a lock piece groove 51 smaller than the facing interval of
An engaging piece 52 is formed below this locking piece groove 51 so as to protrude outward in the radial direction. The peripheral surface of the main case 2, which is the entry area of each lock pawl 50 into the lock ring 41, is formed into a flat wall 14a. In other words, a flat wall 14a is formed between the upper end of the barrel 14 along the guide frame 30 and the upper surface of the support collar 46, including where the flange 18 is formed. This helps to make the outer diameter of lock ring 41 smaller. The support flange 46 described above is formed so that the flat wall 14a is located approximately at the center in the circumferential direction. In FIG. 4, reference numeral 54 indicates a non-slip groove formed on the outer surface of the lock ring 41.

Next, how to use the lock ring 41 and its function will be explained.

Now, when the lock ring 41 is externally attached to the main case 2 in the manner described above and the ring support claw 44 is brought into the unlocked position in contact with the anti-rotation wall 48, the state shown in FIG. 8 changes to the state shown in FIG. Then, the pawl groove 42 faces the area into which the lock pawl 40 enters. In this state, when the grip cylinder 3 is pushed to the lower limit position, the lock pawl 50 enters the inner surface of the lock ring 41.
The lock piece groove 51 is at the same height as the lock piece 43. Therefore, when the locking ring 41 is rotated clockwise to the locked position with the main case 2 looking up from the bottom surface, the locking piece 43 rides on the locking piece groove 51 and engages the engaging piece 52 and the upper and lower parts. engaged in a positional relationship (see Figures 4 and 5);
The grip tube 3 is held against the main case 2 so as not to come off.

In this locked state, only the cap 4 can be removed from the main case 2. From this state, when the lock ring 41 is rotated in the opposite direction to the above operating direction to the unlocked position, the lock piece 43 is displaced from the upper part of the engagement piece 52 in the circumferential direction as shown in FIG. Moving. Therefore, the lock claw 50 is in a state where it can be moved upward, and the grip tube 3 can be easily removed from the main case 2.

[Another example]

In the above embodiment, the lock piece groove 51 and the engagement piece 52 are formed on only one of the pair of lock pawls 50, but these may be formed over both of the lock pawls 50. Although the lock claw 50 is formed as an extension of the slit 31, it is not necessarily necessary to do so.
It may be formed at any location on the lower opening edge of the grip tube 3.

FIG. 10 shows another embodiment in which the lock ring 41 is supported on the grip cylinder 3 side so as to be rotatable only.
In this case, the support groove 4 has a circumferential rib 44a protruding from the inner surface of the lock ring 41 formed on the outer surface of the grip tube 3.
6a so as to be rotatable. In addition, lock piece 43
is provided on the lower end side of the inner surface of the lock ring 41 so as to abut and engage with the lower surface of an engaging piece 52a protruding from the main case 2.

FIG. 11 shows yet another embodiment of the present invention, in which an engaging piece 52b is formed on the inner surface of the grip cylinder 3, and a locking piece 43 is formed on the outer surface of the lock ring 41. In other words, this example assumes that the grip tube 3 is fitted onto the lock ring 41.

In addition, although the lock ring 41 is referred to as the lock ring 41 in the present invention, the lock ring 41 may be C-shaped in order to facilitate attachment to the main case 2 or the grip tube 3.

[Brief explanation of drawings]

1 to 9 show a first embodiment of the present invention, in which FIG. 1 is an exploded perspective view showing the main components of the present invention, FIG. 2 is a longitudinal sectional front view, and FIG. 3 is a second embodiment of the present invention.
Figure 4 is a sectional view taken along line A-A in the figure, Figure 4 is a sectional view taken along line B-B in Figure 2, Figure 5 is a vertical front view with main parts cut away, and Figure 6 is one of the components of the present invention. FIG. 3 is a partially cutaway perspective view of the lock ring. 7th
9 to 9 respectively show the operating states, FIG. 7 is a longitudinal sectional front view when the grip cylinder is opened and operated, FIG. 8 is an exploded view showing the locking ring in the locked position, and FIG. The figure is a developed view showing the state in which the lock ring is operated to the unlocked position. FIG. 10 is a longitudinal sectional view of the main parts showing another embodiment of the present invention. FIG. 11 is a vertical cross-sectional view of the main parts showing still another embodiment of the present invention. 12 and 13 show a conventional example, with FIG. 12 being a perspective view and FIG. 13 being a longitudinal side view. 1...Printing unit, 2...Main case, 3...
Grip tube, 4... Cap, 7... Base frame, 9... Rotating dial, 11... Printing belt, 15... Operation window, 20... Spring member, 36... Fixed printing body, 4
1... Lock ring, 43... Lock piece, 50...
...Lock claw, 52...Engagement piece.

Claims (1)

[Claims for Utility Model Registration] Several printing belts 11 are wound in parallel on the left and right between the top and bottom of the base frame 7, and a rotary dial 9 for manually feeding and rotating each printing belt 11.
The main case 2 is a bottomed cylindrical main case 2 that has an operation window 15 at the top. A means for movably supporting the printing unit 1 and a spring member 2 for pushing the printing unit 1 upwardly toward the stamp face changing position within the main case 2.
0, and a fixed printed body 36 that is removably attached to the lower end of the main case 2 and provided at the lower end of the main case 2.
The cap 4 covers the printed surface of the operation window 1, and the cap 4 is fitted onto the outer periphery of the upper part of the main case 2 so as to be movable up and down.
5, and a cylindrical grip tube 3 that covers the operation window 1 in a manner that can be opened and closed freely.
In the date stamp, the rotary dial 9 facing 5 can be rotated from the outside, and the lock ring 4 is attached to one side of the grip tube 3 and the main case 2.
1 is fitted onto the outside, and an engagement piece 52 is formed on the other side to which the lock ring 41 engages and disengages, and the lock ring 41 engages with the engagement piece 52 to prevent the grip cylinder 3 from moving upward. Posture and the engaging piece 52
A date stamp characterized by being rotatable in the circumferential direction between the unlocked position and the unlocked position.