KR870002900Y1 - Daisey wheel stick and secede equipment of the daisey wheel printer - Google Patents

Abstract

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Description

Daisy Wheel Removal Device for Daisy Printers

Figure 1 is an exploded perspective view of the excerpts of the present invention.

2 is a front view of the installation state of the present invention partially cut.

3 (a) is a cross-sectional view taken along the line A-A of FIG.

3 (b) is a reverse operating state.

* Explanation of symbols for main parts of the drawings

1: Main body 10: Tension spring

11: bottom plate 12: side plate

13: long hole 14: wheel case

3: moving bracket 31: stopper

5: Daisy wheel 6: Mounting table

61: support pin 62: compression spring

7: leaf spring 71: bend

8: bar 9: rod

The present invention improves the moving bracket height retention and locking structure of the daisy wheel detachable device in the printer using the daisy wheel so that the moving bracket can be moved back and forth smoothly to the correct height on the bottom plate of the main body. The present invention relates to a daisy wheel detachable device of a daisy printer, which is configured such that a wheel hub on the side of a moving bracket is accurately and easily separated from a daisy wheel.

In the conventional daisy wheel attachment and detachment device, a ball having a predetermined diameter is usually inserted between the moving bracket and the bottom plate of the main body. When the lever is operated, the bottom plate of the main body is installed by a tension spring installed between the rear of the moving bracket and the rear of the main body. When the driver reverses, the hub installed on the motor shaft on the moving bracket is separated from the daisy wheel in the daisy wheel case so that the wheel in the case can be exchanged and installed by using the friction friction of the ball installed between the moving bracket and the main body. As the hub and the daisy wheel slide together while being separated, the center point of the hub is always formed to coincide with the groove position between the moving bracket and the main body so that the center point of the hub is always moved in line with the center extension line of the coupling hole in the center of the daisy wheel. Dimensional management, processing and manufacturing I had a problem.

Therefore, in order to solve the problems caused by managing the height of the moving bracket using the ball and the groove as described above, both sides of the moving bracket as a state protruding downwardly in contact with the bottom plate of the main body, respectively. A mounting table having at least one support pin installed in the spring body, and a stopper on the bottom end thereof are in contact with the bottom plate tip surface of the main body. As the plate spring fixedly coupled to the operation bar is installed, one side end portion of the operation bar is installed to be coupled with the push rod through the side wall guide hole of the main body, and when the push rod is moved forward, the tip protrusion of the plate spring is elastically deformed, thereby moving the bracket. With the locking to the stopper released, the moving bracket is moved by the rear tension spring. As one of such split-second reverse in a supported state is separated hubs and daisy wheel on either side of the support pin takes bag until in contact with the bottom plate the top face will be described in detail based on the accompanying drawings, it follows.

The front end is provided with a wheel case 14 for inserting the daisy wheels 5 on the front side, and on the bottom plate 11 of the main body 1 in which the side plate and the rear end portion are slid left and right on the front and rear guide rails 2. Normally installed to slide in a state in which the tension spring (10) between the body and the rear of the moving bracket (3) fixed to the motor (4) in which the daisy wheel coupling wheel hub 41 is installed on the shaft. In FIG. 1, FIG. 2, FIG. 3, as shown in FIG. 1, FIG. 2, and FIG. 3, the mounting parts 6 are fixed to both side surfaces of the moving bracket 3, respectively, and a pair of support pins 61 are provided in the front and rear sides. As the compression spring 62 is installed with the lower end protruding downward, the support pins 61 on both sides move forward and backward on the bottom plate 11 of the main body in a state in which the moving bracket 3 is always supported at a predetermined height. It is designed to slide, and the bottom end part of the moving bracket (3) The stopper 31 to be in contact with the front end surface of the bottom plate 11 of the main body 1 is installed, so as to control the backward distance of the moving bracket.

In addition, as shown in FIG. 1 and FIG. 3 (a), the engaging protrusion 71 is bent at the upper end portion, and both ends thereof are respectively penetrated through the both side plates 12 of the main body 1 at the lower end thereof. The rear end portion of the leaf spring 7 which fixedly couples the center portion of the installed operating bar 8 to the bottom side of the bottom plate 11 of the main body 1 is fixedly installed. The stopper 31 is in contact with the protruding portion 71 of the front end of the leaf spring 7 is not backward operation and maintains the locking state combined with the daisy wheel and the hub.

In addition, one side end portion of the side plate 12 is provided with a push rod 9 hinged to the lower end portion as shown in FIGS. And an arc-shaped hole 13 is formed in front of the bar 8 through-hole of one side plate 12, so that the upper end portion of the push rod 9 is forward as shown in FIG. 3 (b). When pushed forward, the one end portion of the bar 8 is advanced through the long hole 13 while rotating forward about the lower hinge, so that the tip protrusion 71 of the leaf spring 7 coupled thereto is within the elastic limit. Is deformed at and the locking with the stopper 31 is released, and when the force applied to the push rod is removed, the bar 8 and the push rod 9 are brought into contact with the rear end of the long hole 13 by the elasticity of the leaf spring. It will be placed in a state.

At this time, since the other side of the bar (8) that is not coupled to the push rod (9) is engaged in the hole of the side plate having an inner diameter larger than its diameter, there is no obstacle in the forward and backward movement of one side portion along the long hole (13) It doesn't work.

The present invention configured as described above, the stopper 31 of the bottom surface of the movable bracket 3 is the leaf spring (7) in the printer operating state, that is, the daisy wheel 5 and the hub 41 in the wheel case 14 is coupled ) Is held by the protruding portion 71 of the upper end portion to maintain the locked state. At this time, since the protruding portion 71 of the leaf spring 7 is in a state where one end portion of the bar 8 at the lower portion thereof is hung from the rear end portion of the long hole 13 of the side plate, without being bound to the rear tension spring 10. It will maintain a solid locking state.

In order to separate the wheel from the wheel case 14 so as to replace the daisy wheel, first, the upper end of the push rod 9 is pushed forward, so that one side end of the bar 8 opens the long hole 13. When the rod advances, the tip projection portion 71 of the leaf spring 7 coupled to the center portion of the leaf spring 7 is extended forward within the elastic limit, and the locking contact with the stopper 31 is released. As a result, the movable bracket 3 moves backward until the stopper 31 catches the front end surface of the body bottom plate 11, so that the hub is separated from the daisy wheel (see also FIG. 3 (b)). At this time, the movable bracket 3 which is moved forward and backward on the bottom plate 11 has the center point of the tip of the hub coinciding with the insertion hole center point of the daisy wheel by the support pins 61 installed on both sides of the mounting table 6. It is lifted and supported in a state and its height can be easily changed according to the elasticity adjustment of the compression spring.

The present invention is constructed and operated as described above, while maintaining the proper height of the moving bracket is made by the support pins installed on both sides of the mounting bracket, the locking device is also installed on the bottom plate bottom plate of the main body and the bending of the front end Consists of a bar and push rod for secondary elastic deformation, and a stopper on the bottom of the movable bracket, it is simple and easy to adjust the height and adjust the dimensions, compared to the height adjusting device using the conventional ball and guide groove. There is an outstanding effect, such as a much improved writing.

Claims (1)

The movable bracket 3 fixedly installing the motor on which the hub 41 is mounted is slid as a mutual tension spring 10 on the bottom plate 11 of the main body 1 having the wheel case 14 at the front. In the conventional installation, the mounting brackets 6 are installed on both sides of the movable bracket 3, respectively, and at least one or more support pins 61 are installed in the downward protruding state as the compression springs 62, respectively. The stopper 31 is fixedly installed on one side of the bottom surface, and the upper side of the tip has a stopper locking upward bent portion 71 and a plate spring 7 fixedly coupled with an actuating bar 8 at the bottom thereof as a rear end portion thereof. The body bottom plate 11 is fixedly installed on one side of the bottom, and one side end portion of the bar 8 is hinged to the side through the long hole 13 formed forward from the through portion of the main body side plate 12 (9) Daisy wheel in the daisy printer, characterized by .