JPH0318203Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a carrier for a printing machine.

Conventionally, in the carrier of the above-mentioned printing machine, a locking lever, a locking pin, a guide pin, a release lever, a coil spring, a locking lever, a locking pin, a guide pin, a release lever, a coil spring, Although it has a locking mechanism consisting of many parts such as screws,
Since the number of parts is large, the number of steps for assembling and adjusting the locking mechanism increases, which is complicated and time-consuming, and the manufacturing cost also increases.

In view of the above-mentioned conventional drawbacks, the present invention has been developed by attaching a locking body having spring properties to the outer frame body, engaging the locking body with a locking hole provided in the inner frame body, and moving the inner frame body to the printing position. and the non-printing position, thereby reducing the number of parts and assembly/adjustment steps, thereby reducing manufacturing costs.

That is, in the present invention, the inner frame is pivoted to the outer frame by a shaft so as to be movable up and down, and the inner frame has a first locking hole for locking the inner frame at the printing position. A second locking hole for locking in a non-printing position is provided on the same arc line centered on the above-mentioned axis, and the first locking hole is wider than the second locking hole. The lower end of a plate spring-like locking body is vertically fixed to the outer frame between the arc wire and the shaft, and the first locking hole or the second locking body is fixed to the upper end of the locking body. A dog-shaped engaging portion is provided which engages and presses into the locking hole, and the first and second locking holes are aligned with the arcuate line so that the engaging portion becomes horizontal at the position where the engaging portion engages and presses. The locking body is made to intersect at a predetermined angle with respect to the outer frame body, and the dogleg-shaped engagement portion of the locking body is inserted into the first part of the inner frame body.
It is characterized by providing a receiving recess that engages with the regulating piece of the inner frame when the inner frame is engaged with the locking hole of the inner frame.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

The illustrated embodiment will be described below.

Reference numeral 1 denotes an outer frame body integrally formed of a metal plate and having a generally concave cross section.The rear side of left and right side plates 3 and 4, which are set parallel to each other on the left and right sides of the lower plate 2, is connected to a guide rod 5, and the front side of the lower plate 2 is connected to the outer frame body 1. are respectively supported on guide rails 6 and are horizontally suspended so as to be movable parallel to the platen 7.

The outer frame 1 pivotally supports a frame 9 on which a ribbon cassette 8 is mounted on the front upper sides of the left and right side plates 3 and 4, and has receiving recesses 10 and 11 formed on the rear upper sides.

Reference numerals 12 and 13 denote a pair of vertical locking bodies on the left and right, which are made by bending a long and thin metal plate with spring properties into a concave shape, and stand up parallel to both ends of the central mounting part 14, and the upper part has an inner part. Engagement parts 15 and 16 bent in a dogleg shape
has been established.

The mounting portion 14 is slightly narrower than the lower plate 2 of the outer frame 1, and the left and right sides of the lower plate 2 have openings 17 through which the locking bodies 12 and 13 are inserted (the left one is shown in the figure). (not shown).

The locking bodies 12 and 13 are inserted into the left and right openings 17 of the outer frame body 1 from below, and are inserted into the left and right side plates 3 and 4.
The mounting portion 14 is placed on the lower surface of the lower plate 2 and fixed with screws 18 so that it stands immediately inside the lower plate 2.

19 is an inner frame integrally formed from a metal plate;
The rear sides of the left and right side plates 20 and 21 standing parallel to each other are connected by a rear side plate 22, and a support piece 23 is provided at the upper end of the rear side plate 22, and a regulating piece 24 is provided at the center of the left and right sides.
(The one on the left is not shown) are integrally formed. In addition, first locking holes 25, 26 and second locking holes 27, 28 are formed in the left and right side plates 20, 21 at two locations at the top and bottom, respectively.

The inner frame body 19 connects the left and right side plates 20 and 21 to the locking body 1.
2, 13, and the lower front corners of the left and right side plates 20, 21 are placed directly inside the lower plate 2 of the outer frame 1.
It is rotatably supported by a shaft 30 on a support piece 29 fixed to the shaft 30 so as to be vertically movable.

31 is a printing hammer, which is attached to the support piece 23 of the rear side plate 22.
It is attached to.

32 is a stepping motor, which is screwed to the front side of the rear side plate 22 and positioned between the left and right side plates 20 and 21, and has a dage-type printing wheel on its rotating shaft 33 that protrudes to the rear of the rear side plate 22. 34 is removably attached.

When the inner frame body 19 is set at the printing position (FIG. 1) where the upper circumference of the printing wheel 34 faces the closest position to the platen 7, the left and right regulating pieces 24 (the left one is not shown) are set. The locking bodies 12 and 13 are engaged with the receiving recesses 10 and 11 to restrict rearward rotation, while the engaging portions 15 and 16 of the locking bodies 12 and 13 are engaged and pressed into the locking holes 25 and 27, respectively. , whereby the inner frame body 19 is locked at the printing position.

Furthermore, when replacing the printing wheel 34 or the ribbon cassette 8, if the inner frame 19 is rotated forward from the printing position and the printing wheel 34 is displaced to a non-printing position away from the platen 7, the rotation will cause the Inlet parts 15, 16 and locking holes 25, 27
The engaging parts 15 and 16 come into contact with the outer surfaces of the left and right side plates 20 and 21, and the locking bodies 12 and 13 are disengaged from each other.
is temporarily bent slightly outward, and as it continues to rotate forward, the engaging portions 15 and 16 engage and press into the locking holes 26 and 28, thereby locking the inner frame body 19 in the non-printing position (second , 3).

The first locking holes 25, 26 and the second locking hole 27,
28 is on the same arc line centered on the shaft 30, and at a predetermined angle with respect to the arc line so that it becomes horizontal at the position where the engaging parts 15, 16 of the locking bodies 12, 13 engage and press. The first locking holes 25 and 26 intersect with the second locking holes 27 and 28.
It's wider than that. In addition, the locking bodies 12,1
3 is the outer frame 1 between this arc line and the shaft 30.
is erected perpendicular to.

Therefore, when the dogleg-shaped engaging portions 15, 16 engage and press into the first locking holes 25, 26 or the second locking holes 27, 28, both of these locking holes become horizontal. The engagement and pressure welding is performed reliably, and the engagement and pressure welding of the locking bodies 12 and 13 allows the inner frame body 19 to be
In addition, since a force urging the arcuate wire inward is also applied, the inner frame body 19 is reliably positioned at a predetermined position. In particular, since the first locking holes 25 and 26 are wider than the second locking holes 27 and 28, the dogleg-shaped locking portions 15 and 16 are
26 than for the second locking holes 27, 28, the locking is stronger than for the second locking holes 27, 28;
Moreover, the engaging portions 15 and 16 are connected to the first locking holes 25 and 2.
6, the left and right regulating pieces 24 of the inner frame body 19 simultaneously engage with the receiving recesses 11 of the outer frame body 1, so that the inner frame body 19 is more firmly locked in the printing position.

As described above, according to the present invention, the inner frame body is pivoted to the outer frame body so as to be able to move up and down, the locking body is vertically fixed to the outer frame body, and the locking body is printed on the inner frame body. The first locking hole for locking in the position and the second locking hole for locking in the non-printing position are located on the same circular arc line centered on the rotation fulcrum, and also at the bottom of the locking body. Since the shape of the engaging part is provided to intersect with the circular arc line at a predetermined angle so that it is horizontal at the position where the engagement and pressure contact is made, the engagement and pressure contact can be performed reliably, and the locking body to the inner frame body by the engagement pressure welding of
Since a force urging the arc wire inward is also applied, the inner frame can be reliably positioned at a predetermined position.

In particular, since the first locking hole is wider than the second locking hole, the dogleg-shaped locking portion
Since the locking hole is deeper than the second locking hole, the locking is stronger than the second locking hole, and the dogleg-shaped locking part is When the first locking hole is engaged and press-contacted, the regulating piece of the inner frame simultaneously engages with the receiving recess of the outer frame, so that the inner frame can be more firmly locked in the printing position.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a right side view, Fig. 2 is a longitudinal sectional view, and Fig. 3 is a longitudinal sectional view of the main part showing the state in which the locking body is engaged with the locking hole. It is a diagram. 1...Outer frame body, 11...Receiving recess, 12, 13
... Locking body, 15, 16 ... Engagement part, 19 ... Inner frame body, 24 ... Regulation piece, 25, 26 ... First locking hole, 27, 28 ... Second locking hole , 30...
shaft.

Claims (1)

[Scope of utility model registration request] The inner frame body is pivoted to the outer frame body by a shaft so as to be vertically movable, and the inner frame body has a first locking hole for locking it in the printing position and a first locking hole for locking it in the non-printing position. A second locking hole is provided on the same arc line centered on the axis, and the first locking hole is wider than the second locking hole, and the arc line and the shaft are A lower end of a plate spring-like locking body is vertically fixed to the outer frame between
An engaging portion bent in a dog-shape is provided which engages and presses into the locking hole or the second locking hole, and the first and second locking holes
The locking hole is made to intersect with the arcuate line at a predetermined angle so that the locking hole is horizontal at the position where the locking part engages and presses. A carrier for a printing machine, characterized in that a receiving recess is provided which engages with a regulating piece of an inner frame when the entry part engages with a first locking hole of the inner frame.