JPH0546932Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications This invention relates to a printer housing.

2. Description of the Related Art In general, a printer casing is made of elastic synthetic resin and includes a lower cover with an opening formed in the upper surface and an opening/closing cover that opens and closes the opening of the lower cover. Furthermore, for parts that are frequently opened and closed, the opening/closing cover is rotatably assembled to the lower cover to improve opening/closing operability.

From this point of view, as shown in FIG. 4, the lower cover 30 and the opening 3 of this lower cover 30
1, and a fulcrum shaft 34 having a notch 33 on a part of the outer periphery is connected to the connecting part 3.
A fitting part 37 is formed integrally with the lower cover 30 via the fulcrum shaft 3 and has a notch 36 formed in a part of the outer periphery.
Fit the fulcrum shaft 34 into the fitting part 37 while aligning the notch 33 of 4 with one edge of the notch 36, and rotate the open/close cover 32 around the axis of the fulcrum shaft 36 and the fitting part 37. There is something that makes it move.

Problems to be Solved by the Invention This type of device can serve the purpose of rotatably assembling the opening/closing cover 32 to the lower cover 30 without using tools.
The opening/closing cover 32 may easily come off from the lower cover 30 depending on the position in the rotation direction. In addition, since the edges 38 on both sides of the notch 33 of the fulcrum shaft 34 abut against the inner peripheral surface of the fitting part 37, the rotational movement lacks smoothness.
As the contact with the edge 38 is repeated, the fitting part 37
may be damaged.

Means for Solving the Problem A lower cover having an opening formed on the upper surface and an opening/closing cover for opening and closing the opening are provided, and the lower cover is integrally attached to the opening/closing cover by a locking part that engages elastically. A fixed plate is provided, a fulcrum shaft having a circular cross section is positioned on the same axis and integrally formed on both sides of the lower cover, and an arcuate wall surrounding a part of the outer periphery of the fulcrum shaft is provided on both sides of the opening/closing cover. integrally formed,
An arcuate wall is integrally formed on the fixed plate, located on the opposite side to the arcuate wall of the opening/closing cover, and surrounding the entire circumference of the fulcrum shaft together with the arcuate wall.

Function: Therefore, when the locking part is elastically engaged to connect the opening/closing cover and the fixing plate, the fulcrum shaft of the lower cover is held between the arcuate walls of the two, thereby making it easier to use the tool. To assemble a lower cover, an opening/closing cover, and a fixing plate without doing anything. Furthermore, by sandwiching the fulcrum shaft with a circular cross section between the arcuate walls from both sides, the fulcrum shaft is prevented from falling off from the arcuate walls, and the rotational movement of the opening/closing cover is made smoother, thereby improving durability.

Embodiment An embodiment of this invention will be explained based on FIGS. 1 to 3. First, the overall structure of the housing 1 is shown in FIG. Reference numeral 1 denotes a lower cover having an opening 2 formed on its upper surface, and this lower cover 1 has a separable guide plate 3 that forms a part of a paper guide surface. Further, an upper cover 4 that covers the center and rear of the opening 2 of the lower cover 1, an opening/closing cover 5 that opens and closes the front of the opening 2, and a fixing plate 6 are provided. A guide plate 7 for guiding paper is detachably held on the upper cover 4.

Next, on both sides of the front surface 1a of the lower cover 1,
As shown in FIGS. 1 and 2, a fulcrum shaft 8 with a circular cross section located on the same axis is integrally formed via a connecting portion 9, and a fulcrum shaft 8 is provided on both sides 10 of the opening/closing cover 5. an arcuate wall 11 surrounding approximately half of the 8;
A projecting piece 13 having a notch 12 serving as a locking part is integrally formed, and the fixed plate 6 includes an arcuate wall 14 that faces the arcuate wall 11 and surrounds half the circumference of the fulcrum shaft 8;
A protrusion 1 that is a locking part that elastically engages with a notch 12
5 is formed.

In such a configuration, the notch 12 and the protrusion 15
By elastically engaging the opening/closing cover 5
and the fixing plate 6 are combined, and at this time the fulcrum shaft 8 of the lower cover 1 is held between the arcuate walls 11 and 14 of both. Thereby, the lower cover 1, the opening/closing cover 5, and the fixing plate 6 can be assembled without using tools. Further, by sandwiching the fulcrum shaft 8 having a circular cross section between the arcuate walls 11 and 14 from both sides, the fulcrum shaft 8 can be prevented from falling off from the arcuate walls 11 and 14, and the rotational movement of the opening/closing cover 5 can be prevented. can be smoothed and improve durability.

Effects of the invention Since this invention is constructed as described above, when the locking portion is elastically engaged to connect the opening/closing cover and the fixing plate, the fulcrum shaft of the lower cover is held between the arcuate walls of the two. As a result, the lower cover, opening/closing cover, and fixing plate can be assembled without using tools, and by sandwiching the fulcrum shaft with a circular cross section between the arcuate walls from both sides, the fulcrum shaft from the arcuate wall can be easily assembled. This has effects such as preventing the shaft from falling off, smoothing the rotational movement of the opening/closing cover, and improving durability.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention; Figure 1 is an exploded perspective view of the main parts;
Figure 2 is a vertical side view of the same, Figure 3 is an exploded perspective view showing the overall configuration, and Figure 4 is a partially enlarged vertical side view showing the conventional assembly structure of the lower cover and the opening/closing cover. . 1... Lower cover, 2... Opening, 5... Opening/closing cover, 6... Fixed plate, 8... Fulcrum shaft, 11...
Arc-shaped wall, 12... Notch (locking part), 14... Arc-shaped wall, 15... Protrusion (locking part).

Claims (1)

[Scope of utility model registration request] A lower cover having an opening formed in the upper surface and an opening/closing cover for opening and closing the opening are provided, a fixing plate is provided which is integrally attached to the opening/closing cover by a locking part that engages elastically, and the lower cover A fulcrum shaft having a circular cross section is positioned on the same axis and is integrally formed on both sides of the opening/closing cover, and an arcuate wall surrounding a part of the outer periphery of the fulcrum shaft is integrally formed on both sides of the opening/closing cover.
A printer casing, characterized in that an arcuate wall is integrally formed on the fixed plate, the arcuate wall being located on the opposite side of the arcuate wall of the opening/closing cover and surrounding the entire circumference of the fulcrum shaft together with the arcuate wall.