JPH0525898Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) This invention relates to a device for mounting a character generator (hereinafter simply referred to as CG) that stores character patterns on a circuit board in a printer. It is something.

(Prior Art) Printers are sometimes required to change the font or increase the number of characters that can be printed.

(Problem that the invention attempts to solve) In this case, it is necessary to replace the CG or install a new CG. The purpose of this invention is to be able to reliably close the CG at all times, and to close the CG securely when replacing the CG.
To provide a printer that can be attached and detached by easily opening a storage part of the printer.

Structure of the invention (Means for solving the problem) This invention was made to achieve the above object, and is a printer in which a CG is removably connected to a connector on a circuit board in a printer frame. A continuous opening is formed in a first surface corresponding to the connector and a second surface adjacent thereto in the printer frame, and a lid member is provided to be openable and closable to cover the two surfaces of the opening, and the opening A pin is provided protruding from the inner side surface of the second surface of the part, and a fitting recess is formed extending from the first surface along the side surface, and the lid member has a pin extending in a direction parallel to the second surface. forming a long bearing hole in which the pin rotatably and slidably fits, and a holding piece fitting in the fitting recess on the lower surface of the wall corresponding to the first surface; The lid member closes the opening portion with the bearing hole and the holding piece fitted into the pin and the fitting recess, and extends in a direction substantially perpendicular to the first surface along the pin and the fitting recess. The holding piece can be slid around the pin in a state where the holding piece is removed from the fitting recess.

(Function) Therefore, in the printer of this invention, by rotating the lid member and sliding it along the fitting recess, the lid member closes the opening part and becomes the closed state. Since the reverse operation is performed, even if an impact is applied to the lid member from the outside in the closed state, the lid member will not open. Also, in the open state, two consecutive printer frames
Since the surface is open, it is easy to put your hand in to attach and remove the CG. Furthermore, since the lid member is reliably closed in a fixed position, there is no possibility that a gap or step will be formed between the lid member and the printer frame due to aging.

(Example) Hereinafter, an example that embodies this invention will be described based on the drawings.

As shown in FIG. 2, the printer frame 1 has a box-like structure including an upper frame 2 and a lower frame 3, and an operating section 5 having a plurality of switches 4 is provided on the front upper surface of the upper frame 2. ing.
As shown in FIG.
are formed continuously, and the opening part 6 is the first, second,
It is covered in an openable and closable manner by a side-shaped lid member 7 shown in FIG.

As shown in FIGS. 1 and 4, a pair of mounting portions 8 are formed protruding from the inner surfaces of both left and right ends of the lid member 7. As shown in FIGS. Each mounting portion 8 includes a locking piece 9 having a J-shaped side surface,
A bearing hole 11 extending vertically between the locking piece 9 and the protruding piece 10 is provided.
and an opening 12 located at the lower end of the bearing hole 11.
is formed. Then, by fitting the bearing hole 11 of each mounting portion 8 into a pin 14 (see FIG. 3) protruding from the outer surface of the side wall 13 of the open portion 6, the lid member 7 is fitted as shown in FIG. is supported to be vertically movable and rotatable with respect to the printer frame 1,
The opening part 6 is opened and closed. The rear end of the lid member 7 in the closed state is in contact with the upper end surface of the partition wall 15 in the printer frame 1, and the lower end surface of the lid member 7 is in contact with the upper end surface of the front wall of the lower frame 3. 7 and the outer surface of the printer frame 1 form the same plane.

A pair of left and right elastically deformable first holding pieces 17 are formed on both side inner surfaces of the lid member 7 above each of the mounting parts 8 so as to extend diagonally downward, and a locking protrusion 18 is formed at the tip thereof. ing. and,
In the closed state of the lid member 7, the locking protrusion 1
8 is a diagonal engagement protrusion 19 protruding from the side wall 13;
It engages with the lower end surface from below to apply a predetermined resistance force against the upward movement of the cover member 7, and when the cover member 7 is moved upward by a force exceeding the resistance force, the first The holding piece 17 is bent against its own elasticity, and the engagement between the locking protrusion 18 and the engaging protrusion 19 is released.

A pair of left and right reinforcing plates 2 are provided on the lower surface of both ends of the lid member 7.
2 is formed to hang down, and a second holding piece 21 that is slightly shorter than the vertical length of the bearing hole 11 is provided on the outer surface of the rear end.
are integrally formed. In the closed state of the lid member 7, each second holding piece 21 is attached to the side wall 1.
3 is fitted from above into the fitting recess 23 formed to extend vertically to restrict the rotation of the lid member 7 in the opening direction, and when the lid member 7 is moved upward, the second holding The fitting between the piece 21 and the fitting recess 23 is released, and the opening rotation of the lid member 7 is allowed. Note that the base of the first holding piece 17 is fixed to the lower end of the reinforcing plate 22.

Furthermore, a pair of left and right regulating plates 24 as regulating portions are formed on the inner surface of the lid member 7 at a portion closer to the reinforcing plate 22 between the two reinforcing plates 22 .

On the other hand, as shown in FIG. 1, a main body circuit board 25 having a control circuit 31 for controlling the operation of the printer is arranged at the bottom of the lower frame 3, and a connector 26 is fixed to the upper surface of the front end thereof. ing. As shown in FIG. 5, a pair of support walls 27 are provided on the inner surface of the front wall of the lower frame 3 so as to extend vertically so as to sandwich the connector 26 from both the left and right sides, and guide grooves 28 are formed on the inner surfaces of the support walls 27. It is formed.

The CG board 29 including the CG 32 storing a large number of character patterns is accommodated in the printer frame 1 through the opening 6 when the lid member 7 is open, and the left and right ends of the board 29 are fitted into the respective guide grooves 28 . Connecting part 3 at the lower end while being held upright.
0 is connected to the connector 26 of the main body circuit board 25. When the lid member 7 is closed in this state, the lower end surface of each of the regulating plates 24 is
The CG
The upward movement of the substrate 29 is restricted.

Now, in the device configured as above,
When removing and installing the CG board 29 when changing the font of the printer or adding the number of characters that can be printed, first,
The lid member 7 is moved upward until the lower end of the locking piece 9 engages with the pin 14, and the locking protrusion 1 of the first holding piece 17 is moved upward.
8 and the engagement protrusion 19 and the second holding piece 21
and the fitting recess 23, and the regulating plate 24 and the CG
The contact with the substrate 29 is released, and in this state, the lid member 7 is rotated forward to open the opening 6 of the printer frame 1. The opened lid member 7 is held at the position indicated by the chain line on the right in FIG. 1 by the engagement between the locking piece 9 and the pin 14 and the engagement between the protrusion piece 10 and the lower frame 3. Furthermore, if necessary, the lid member 7 can be separated from the printer frame 1 by releasing the engagement between the bearing hole 11 and the pin 14 through the opening 12.

Next, the connection between the connection part 30 and the connector 26 is released, and the CG board 29 is removed from the main circuit board 25.
It is taken out of the printer frame 1 through the opening 6. And another CG3 for different typefaces
2 is accommodated in the printer frame 1 through the open part 6 and pushed downward along the guide groove 28, the connecting part 30 is connected to the connector 26, and the new board 29 is held upright. Ru.
In this state, when the lid member 7 is closed, the first holding piece 1
The upward movement of the lid member 7 is regulated by the engagement between the locking protrusion 18 of 7 and the engagement protrusion 19, and the engagement between the second holding piece 21 and the fitting recess 23 restricts the upward movement of the lid member 7. Since the rotation of the CG board 29 is restricted, the state of contact between the regulation plate 24 and the CG board 29 is maintained, and the CG board 29
This will surely prevent their departure.

In the printer of the above embodiment, the CG board 2
9 is covered by the lid member 7 when attached to the printer, so the ROM of the CG 32 is placed on the CG board 29.
Can be installed with the element exposed, CG
No need for a case to cover the board 29 and CG32,
It can be manufactured at low cost.

Effects of the invention As detailed above, according to this invention, by rotating the lid member and sliding it along the fitting recess, the lid member becomes the closed state in which the opening part is closed, and vice versa. Since it is configured to be in the open state by performing the above operation, it has an excellent effect of preventing the lid member from opening even if an impact is applied to the lid member from the outside in the closed state.

In addition, in the open state, two consecutive sides of the printer frame are opened, which provides an excellent effect of making it easy to insert and remove the CG.

Furthermore, since the lid member closes reliably in the fixed position,
This provides an excellent effect of preventing gaps and steps from being formed between the lid member and the printer frame due to aging.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view taken along the line A-A in FIG. 2, showing a CG board mounting device in an embodiment of this invention;
Fig. 2 is a perspective view showing the entire printer, Fig. 3 is a partial perspective view showing the open part of the printer frame, Fig. 4 is a perspective view showing the lid member, and Fig. 5 is a partial perspective view showing the lower frame. be. In the figure, 1 is a printer frame, 6 is an open part, 7 is a lid member, 14 is a pin, 21 is a holding piece, 2
3 is a fitting recess, 25 is a main body circuit board, 26 is a connector, 29 is a CG board, and 32 is a CG (character generator).

Claims (1)

[Claims for Utility Model Registration] In a printer in which a character generator 32 is removably connected to a connector 26 on a circuit board 25 in the printer frame 1, the connector 26 in the printer frame 1
An open part 6 is formed that is continuous to a first surface corresponding to and a second surface adjacent thereto, and a lid member 7 that covers the two sides of the open part 6 is provided so as to be openable and closable, and the open part Pin 14 is attached to the inner side of the second surface of 6.
and a fitting recess 23 extending from the first surface along the side surface. A bearing hole 11 that is slidably fitted is formed, and the fitting recess 23 is formed on the lower surface of the wall corresponding to the first surface.
The lid member 7 is formed with a holding piece 21 that fits into the pin 14 and the fitting recess 2.
3 with the bearing hole 11 and the holding piece 21 fitted, the opening part 6 is closed, and the opening part 6 is slidable along the pin 14 and the fitting recess 23 in a direction substantially perpendicular to the first surface. , the holding piece 21
When the pin 1 is detached from the fitting recess 23, the pin 1
A printer characterized in that it is rotatable around 4.