JPH0588959U - Recording head mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a recording head mounting structure in which a mounting member of a thermal head realizes light weight and cost reduction. [Structure] An L-shaped leg piece 11 and a half arrow-shaped leg piece 13 for locking a recording head and a spring piece 12 are integrally molded on a back surface of an openable / closable panel cover 17, and a support member 10 for a recording head 9 is formed.
Is fixed so as not to fall off by the leg pieces 11 and 13, and the upper surface of the support member 10 is elastically pressed by the panel piece 12.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure of a recording head used in a facsimile machine or the like.

[0002]

[Prior Art]

 In the conventional recording head mounting structure, in the type in which the recording head is mounted on an openable panel cover, a sheet metal cover frame is pivotally attached to the main body so that it can be freely opened and closed, and a resin cover is appropriately attached to the upper surface of the cover frame. The recording head (for example, a thermal head) is attached to the lower surface of the cover frame via a spring member while being attached by various locking means. Then, when the panel cover is closed, the recording head is arranged so as to be elastically mounted on a platen roller installed on the main body side.

[0003]

[Problems to be solved by the device]

 In the conventional recording head mounting structure described above, complicated processing of a sheet metal frame, which is a related member of the recording head, and a screw stop at the time of assembling the sheet metal frame are required, which is the weight of the apparatus itself. And increased costs.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the recording head mounting structure of the present invention has a recording head supporting member integrally formed with a recording head locking leg piece and a spring piece on the back surface of an openable panel cover. Is locked so as not to fall off by the locking leg piece, and the upper surface of the support member is elastically pressed by the spring piece. Further, it is also characterized in that the panel cover, the locking leg pieces and the spring pieces are integrally molded of synthetic resin.

[0005]

[Operation] The recording head is attached by the locking leg piece and the spring piece which are integrally molded on the panel cover.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a recording head mounting structure according to the present invention, and FIG. 2 is a vertical sectional view of a facsimile apparatus adopting the recording head mounting structure according to the present invention.

First, the main configuration of the facsimile apparatus will be described with reference to FIG. Facsimile apparatus 1 can be roughly divided into a document reading system and an image forming system. Explaining from the original reading system, the original is inserted into the apparatus through an original insertion port 2 provided in front of the facsimile apparatus 1. When the original is further inserted, the original is guided by the guide member 3 and the image sensor 4 and the reading roller. The image sensor 4 is guided to the contact portion with the image sensor 5 and is read by the image sensor 4. After reading, the original is ejected from the paper ejection port 6. The document transport path is indicated by a broken line GD.

Next, the image forming system will be described. A heat-sensitive roll paper (hereinafter referred to as a recording paper P) is arranged in the approximate center of a side view of the facsimile apparatus 1. The recording paper P is guided by a guide member 7 while removing curls peculiar to the roll paper and the platen roller 8 and the thermal paper. The thermal head 9 records on the conveyed recording paper P while being guided to the contact portion with the head 9. After recording, the recording paper P is discharged from the paper discharge port 6. The conveyance path of the recording paper P is indicated by a broken line PD.

Next, a mounting structure of the thermal head 9 according to an embodiment of the present invention will be described with reference to FIG. In FIG. 1, both ends of the thermal head 9 and the center upper part are provided with projecting pieces 10a protruding in the width direction of the thermal head for engaging with a locking member described later, and a supporting member 10 for supporting the thermal head 9 is provided. It is fixed with screws. On the other hand, on the back surface of the panel cover 17 to which the thermal head 9 is attached, locking leg pieces 11 (hereinafter, L-shaped leg pieces) and 13 (hereinafter, semi-arrow-shaped leg pieces) that are locking members for mounting the support member 10 are provided. ) And are integrally molded of synthetic resin at positions corresponding to the support member 10 along the longitudinal direction of the panel cover 17. A spring piece 12 is also integrally formed of synthetic resin between the leg pieces so as to be sandwiched between the L-shaped leg piece 11 and the semi-arrow-shaped leg piece 13. The spring piece 12 is configured to elastically press the upper surface of the support member 10 to fix the thermal head 9 when the thermal head 9 is attached, and the spring piece 12 directly presses the support member 10. As shown in the drawing, the tip is formed in a V shape so as to be perpendicular to the upper surface of the support member 10 in order to adjust the elastic pressing force to the thermal head 9. That is, the above elastic pressing force may be an appropriate force, and when the pressing force of the spring piece at the time of molding is large, the tip of the spring piece is scraped off by a tool such as a filer by a assembler and the pressing force is moderate. Will be adjusted to your power. Further, even if the tip of the spring piece is scraped by the scraping work, the positions of pressing the support member 10 by the dogleg molding are made substantially equal. When the elastic pressing force of the spring piece 12 at the time of molding cannot be adjusted if the elastic pressing force is smaller than an appropriate force, the spring piece 12 must be molded so as to have a large elastic pressing force at the time of molding.

Next, the operation of each of the above members when the thermal head 9 is assembled will be described. First, in order to attach the thermal head 9, the assembling person attaches three protrusions 10a corresponding to the L-shaped leg 11 to the panel side of the L-shaped leg 11 in the protrusion 10a of the support member 10. Place it so that it touches the inner surface of. Next, by pushing up the other three projecting pieces 10a corresponding to the semi-arrow-shaped leg piece 13, the semi-arrow-shaped portion (inclined part) of the semi-arrow-shaped leg piece 13 is slid while the projecting piece 10a is in contact, and Due to the sliding action and the pushing-up action, the semi-arrow leg 13 is deformed rearward of the device by the elastic force of the resin. When the projecting piece 10a finishes sliding along the inclined portion, the semi-arrow-shaped leg piece 13 returns to the shape before mounting the thermal head 9 due to the restoring elastic force. Due to the action of the half arrow-shaped leg piece 13, the thermal head 9 cannot be removed downward. Further, the elastic pressing force of the spring piece 12 acts at the same time when the sliding action of the projecting piece 10a ends, and the supporting member 10 is biased downward, so that the thermal head 9 is firmly fixed to the panel cover 17. ..

The panel cover 17 is provided with buttons 15 such as a numeric keypad for pressing a telephone number and a panel board 14 for controlling ON / OFF of the buttons 15 at various places. The buttons 15 and the panel substrate 14 are arranged in a portion where the leg pieces 11 and 13 and the spring piece 12 do not exist. Further, bearings 18 are provided at both rear ends of the panel cover 17, and the panel cover 17 is opened and closed with the pin 16 provided on the device side as an axis. The guide member 7 is pinned to the bearing 18 at one end of the guide member 7.

When the panel cover 17 is opened, the thermal head 9 and the supporting member 10 in a fixed relationship with the cover and the guide member 7 are opened together with the movement of the panel cover 17 to prevent a paper jam. To deal with it. Further, the spring piece 12 not only fixes the thermal head 9, but also has a role of elastically contacting the thermal head 9 with the surface of the platen roller 8 when the panel cover 17 is closed.

[0013]

[Effect of the device]

 As is clear from the above, since the mounting structure of the recording head in the present invention does not require a sheet metal frame that is complicated to process or a screw stop at the time of assembly, the weight of the device can be reduced and the cost can be reduced. It also has the effect of reducing the work effort during assembly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting structure of a recording head according to the present invention.

FIG. 2 is a vertical sectional view of a facsimile apparatus adopting the recording head mounting structure of the present invention.

[Explanation of symbols]

 11 L-shaped leg piece 12 Spring piece 13 Half arrow-shaped leg piece 17 Panel cover

Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical indication location H04N 1/00 108 Q 7046-5C 1/032 A 9070-5C H05K 7/12 C 7301-4E 8804-2C B41J 29/12 A

Claims (2)

[Scope of utility model registration request] 1. A recording head locking leg piece and a spring piece are integrally molded on the back surface of an openable / closable panel cover, and the supporting member of the recording head is locked by the locking leg piece so as not to fall off. A recording head mounting structure in which the upper surface of the supporting member is elastically pressed by the spring piece. 2. The panel cover, the locking leg piece and the spring piece are integrally molded of synthetic resin.
The recording head mounting structure described.