JPS61263789A - Ribbon cassette holder - Google Patents

Abstract

PURPOSE:To accomplish simple and highly accurate positioning and holding, by providing a pair of fastening members are provided with elastic fastening pieces for energizing a ribbon cassette downward, in a form symmetrical on left and right sides. CONSTITUTION:A main body 2 of a carriage is provided with the fastening members 3 for positioning and holding the ribbon cassette 1 in lateral direction, and is provided with a pair of fastening members 4 for positioning and holding the cassette 1 in the mounting direction. The members 4 are provided integrally with the elastic fastening pieces for energizing the cassette 1 in the mounting direction when the cassette 1 is mounted, and are provided in a form symmetrical on left and right side so that they can be used in common for both directions. Concurrently with the mounting of the cassette 1, projections 1-a provided on the cassette 1 with favorable accuracy are moved downward while deforming the elastic fastening pieces of the members 4, and after the positioning and holding of the cassette 1 in the mounting direction is completed, the projections 1-a are elastically energized in the mounting direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a holding device for a ribbon cassette of a printer with a type head.

2. Description of the Related Art Conventionally, a ribbon cassette containing printing ribbon and the like has been detachably attached to a carriage equipped with a type head. For example, as shown in FIGS. 5 and 6, in order to attach and hold the ribbon cassette 21 to the carriage body 22, the ribbon cassette 21 is
The latch member 23 and the carriage body 22 that position and hold the
A pair of holding levers 24 rotatably supported on the same axis on both sides
24, and a spring 26 for biasing the ribbon cassette 21 in one direction is provided between the holding lever 24 and the carriage body 22, so that when the ribbon cassette 21 is installed, it is biased downward and held. There is.

Problems to be Solved by the Invention However, in manufacturing and assembling such a ribbon cassette holding device, the spring hook is cumbersome to operate, and the holding lever is used to lock the ribbon cassette. Mechanical allowable dimensions are required to facilitate rotation.
There were also problems in that noise was generated due to mechanical vibrations and that highly accurate holding was not possible.

Means for Solving the Problems The ribbon cassette holding device of the present invention has a hooking member on a carriage body for positioning and holding the ribbon cassette in the left-right direction, and a pair of hooking members for positioning and holding the ribbon cassette in the mounting direction. A hooking member is provided, and the pair of hooking members are
When the ribbon cassette is installed, elastic locking pieces are formed integrally and laterally symmetrically so as to be biased in the installation direction.

Function: In the ribbon cassette holding device of the present invention, a locking piece having elasticity that biases the ribbon cassette in the mounting direction is integrally formed with a pair of locking members that position and hold the ribbon cassette in the mounting direction. Because of this, there is no need to attach any other elastic body such as a spring, and because it is formed in a left-right symmetrical shape, it is possible to use one pair for both.

EXAMPLE Hereinafter, a ribbon cassette holding device according to an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, in order to attach and hold the ribbon cassette 1, the carriage body 2 is provided with a latch member 3 for positioning and holding the ribbon cassette 1 in the left-right direction.
A pair of hooking members 4 are provided on the carriage body 2 for positioning and holding in the mounting direction. As shown in FIG. 2, the pair of locking members 4 are integrally formed with elastic locking pieces that bias in the mounting direction when the ribbon cassette 1 is mounted. It is symmetrically formed so that both can be used in common.

FIG. 3 is a partial enlarged view of the pair of hooking members 4, which are attached to the carriage body 2 using only 61 small screws with a C/L/7 tap. Holes 2-& for the screws 6, holes 2-b for positioning the pair of locking members 4, and another elastically deformable needle,
An escape hole 2-0 is provided for escape. In addition, as explained earlier, the pair of hooking members 4 have one symmetrical
A pair of protrusions 4-2L are provided.

As shown in FIG. 4, the protrusions 1-4 provided with high precision on the ribbon cassette 1 deform the elastic locking pieces of the pair of locking members 4 when the ribbon cassette 1 is installed, and move downward. After the ribbon cassette 1 has been positioned and maintained in the mounting direction, the protrusion 1-& is elastically urged in the mounting direction. Regarding the removal of the ribbon cassette 1, the above-mentioned operation is simply reversed.

By employing the above-described configuration, the operator can feel an appropriate lick during the mounting operation of the ribbon cassette 1, and after mounting, the ribbon cassette 1 can be held with high precision. Furthermore, the installation of the pair of locking members 4 is extremely easy, and the positional accuracy of the installation is very high. Further, the biasing force in the mounting direction of the ribbon cassette 1 can be adjusted to a desired biasing force and click feeling by adjusting the thickness of the elastic locking pieces of the pair of locking members 40.

Effects of the Invention As described above, the ribbon cassette holding device of the present invention includes a latch member on the carriage body that positions and holds the ribbon cassette in the horizontal direction, and a pair of latch members that position and hold the ribbon cassette in the vertical direction. By integrally forming an elastic locking piece on the member that urges the ribbon cassette downward when the ribbon cassette is attached, and forming it in a left-right symmetrical shape so that it can be used in both cases, it is possible to Simple and highly accurate positioning and holding can be achieved without using elastic members such as springs. Therefore, the cost of the ribbon cassette holding device can be significantly reduced in addition to the fact that it can be used in both directions, and it is also expected that the handling efficiency will be improved.
Furthermore, it is extremely advantageous in practice as a ribbon cassette holding device for printers, etc., which greatly contributes to space saving of the entire device.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a ribbon cassette holding device according to an embodiment of the present invention when the ribbon cassette is attached, Fig. 2 is a side view thereof, Fig. 3 is a partially enlarged perspective view thereof, and Fig. 4 shows the ribbon cassette holding device. Schematic partial side view of installed operational state, fifth
The figure is a perspective view of a conventional ribbon cassette holding device when the ribbon cassette is attached, and FIG. 6 is a side view thereof. 1...Ribbon cassette, 2...Carriage body, 3...Latching member, 4...1
A pair of hanging members. Name of agent: Patent attorney Toshio Nakao et al. 16th
1 figure
Figure 2 Figure 13 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] In a device that removably holds a ribbon cassette containing printing ribbon, etc. in a carriage body equipped with a type head, a ribbon cassette, a carriage body, and a latch on the carriage body that positions and holds the ribbon cassette in the left and right direction. and a pair of hooking members installed on the carriage body to position and hold the ribbon cassette in the vertical direction.When the ribbon cassette is loaded, the pair of hooking members are attached in the mounting direction. 1. A holding device for a ribbon cassette, characterized in that a locking piece having elasticity so as to be biased is formed integrally and laterally symmetrically.