JP4597071B2 - Inkjet recording device - Google Patents

Description

  The present invention relates to the structure and configuration of a commercial power cord connecting portion of a charge control type ink jet recording apparatus.

  Ink jet recording apparatuses include a drop-on-demand system and a charge control system. In the charge control method, ink is ejected in the form of particles from nozzles and adhered to a printed material, and characters, patterns, and the like are formed on the surface of the printed material.

  More specifically, a predetermined charge is given to each ink particle in accordance with a signal from the outside by a charged electrode provided at a position where the ink is particleized. The ink particles that are given this electric charge and are continuously ejected from the nozzles then pass through the deflection electric field part.

  When passing through this deflection electric field part, each ink particle receives a deflection force corresponding to its charge amount. The ink particles deflected from the ejection direction fly linearly in the deflected direction, and land on the surface of the printing material to form printing dots. In order to form characters and patterns on the printed material, the printed material and the nozzle are relatively moved in a direction perpendicular to the previous deflection direction.

  Ink particles that have not been charged by the charged electrode do not fly in the direction of the substrate and are received by the gutter. Then, the ink is collected in the ink container by the collecting pump.

  The above-described charge control type ink jet recording apparatus (hereinafter referred to as a charge control type ink jet recording apparatus) is inferior in recording density as compared with the drop-on-demand type, but has a short distance from the printed material. There is an advantage that recording is possible even at a relatively long distance, and printing can be performed on uneven surfaces. Therefore, in most cases, the charge control type ink jet recording apparatus is used for the purpose of recording characters, patterns and the like for identifying individual products such as lot numbers and bar codes of mass-produced products.

  Since such charge control type inkjet recording apparatuses are used in various countries and environments, a wiring connection method with a commercial power source suitable for each usage environment is desired, and the apparatus has a configuration that can be flexibly supported. Necessary.

  Furthermore, since it is a power source wiring connection portion, it is necessary to have a configuration that fully considers safety. Since ink jet recording apparatuses are often used by being incorporated in production lines such as factories, the surrounding environment of the apparatus is various, and ensuring dustproof and waterproof performance is an important factor.

  In a conventional ink jet recording apparatus, there is a method in which a commercial power supply wiring connection portion such as a terminal block is provided inside the apparatus, and a power cord is pulled out of the apparatus using a waterproof bush. Japanese Patent Application Laid-Open No. 2004-130578 (Patent Document) If the structure considering the maintainability as shown in 1) is used, the power cord can be replaced, and the waterproofness of the apparatus is ensured.

JP 2004-130578 A

  The conventional inkjet recording apparatus uses an AC inlet connector as the structure of the commercial power supply wiring connection part because the power cord can be easily replaced in accordance with the shape of the power plug that varies depending on the country or region. There is. In addition, in the case of a product that places importance on waterproof performance, there is a product that uses a waterproof special connector because it is possible to achieve both the ease of replacing the power cord and ensuring the waterproof performance.

  In the case of using an AC inlet connector as a method of connecting the power cord to the device, it is difficult to secure waterproof performance structurally, and it is difficult to fix the power cord inserted into the AC inlet connector, and it is difficult to take the structure of retaining. There was a problem.

  The waterproof performance is an important factor when considering the usage environment of the inkjet recording device, but in order to satisfy both the securing of the waterproof performance and the ease of work for replacing the power cord equivalent to the AC inlet method, the waterproof type There was no choice but to use a special connector. However, the waterproof connector has a problem that the cost of parts is very high compared to the AC inlet connector.

  In addition, if the device has a structure that has a power cord connection part such as a terminal block, ensure waterproofness as a device by using a waterproof bush or the like at the part where the power cord is taken out from the device. Is possible. However, in order to replace the power cord, it is necessary to open and close the door, remove the partition plate, etc., and there is a problem that workability is greatly inferior compared with the AC inlet method and the waterproof connector method. .

  In principle, volatile solvents are used in inkjet recording devices. However, if the concentration of the solvent in the device becomes too high, there is a possibility of ignition due to sparks at the electrical contacts. It is safer to have the power cord connector outside the device. In any method, it is difficult to satisfy all of workability, waterproofness, and cost.

  An object of the present invention is to provide an ink jet recording apparatus that solves at least one of the above problems.

  An ink jet recording apparatus according to the present invention includes an inlet connector provided at an opening of an outer wall of an ink jet recording apparatus in which an electric charge is applied to ink particles ejected from a nozzle and a deflection electric field is passed to form a print dot on a printed material. And a base having a power cord fixing portion provided around the inlet connector and facing the outer wall of the apparatus and fixing the power cord and a power cord fixing portion provided opposite the base and the power cord fixing portion of the base And a cover having a fixing portion sandwiching the.

  Moreover, you may use a sealing material in the position of the power cord facing a power cord fixing | fixed part. By doing so, waterproof and dustproof performance can be improved.

  Further, an L-shaped connector may be used at the end of the power cord. It is possible to prevent the cord portion of the power cord from coming off by adopting a structure that holds the L-shaped connector in the depth direction and the left-right direction inside the cover.

  Moreover, you may provide a sealing material between an apparatus outer wall and a cover. As a result, it becomes possible to further improve the waterproof and dustproof properties of the device.

  According to the ink jet recording apparatus of the present invention, the waterproof / dustproof performance of the power cord connecting portion can be improved.

  An ink jet recording apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing the overall configuration of an ink jet recording apparatus according to the present invention. The ink jet recording apparatus includes an ink tank and a solvent tank for dilution (both not shown) inside, and a nozzle head 113 connected to the back of the ink jet recording apparatus (not shown) by a connection hose.

  A cover 102 that covers an AC inlet 101 (described later), which is an inlet connector for connection with the power cord 103, is provided on the outer side surface of the outer wall 104 made of a steel plate, which is the main body of the inkjet recording apparatus. The power cord 103 is connected to the AC inlet 101 inside the cover 102.

  The AC inlet 101 is connected to the power switch 106 inside the apparatus. The AC inlet 101 can be easily accessed by removing the cover 102.

  In the conventional ink jet recording apparatus, in order to connect the power cord to the commercial power primary side wiring connection part, the lid covering the opening of the outer wall 104 of the apparatus is opened, and if there is an internal partition plate, it is removed. It was the structure which connects with a wiring connection terminal. In addition, there is a problem that work space for allowing the inside of the apparatus to be peeked is required and workability is poor. In this embodiment, the inside of the apparatus outer wall 104 can be opened by opening the operation panel 105.

  FIG. 2 is a diagram showing the internal configuration of the AC inlet 101 for connecting the power cord 103 and the cover 102 in one embodiment of the present invention.

  The AC inlet 101 is provided in an opening provided in the side surface portion of the apparatus outer wall 104 so that the flange portion faces the outer surface of the apparatus outer wall 104. A base 107 for fixing the cover 102 and the power cord 103 is fixed to the apparatus outer wall 104 with screws 108. The base 107 includes an opening 114 that surrounds a portion of the AC inlet 101 protruding from the apparatus outer wall 104, and a power cord fixing portion 109 that is provided below the opening 114.

  A sealing material is affixed to the contact surface of the base 107 with the device outer wall 104, thereby ensuring waterproof and dustproof properties between the base 107 and the device outer wall 104.

  The thickness dimension of the surface of the base 107 facing the apparatus outer wall 104 is the same as the thickness dimension of the portion of the AC inlet 101 exposed from the apparatus outer wall 104, so that the AC inlet 107 can be fixed to the apparatus outer wall 104. Also serves as.

  The power cord 103 having the connector 111 as an AC outlet at the end is inserted into the AC inlet 101 with the waterproof seal 110 attached to the cable portion in FIG.

  A waterproof seal 110 that is deformable when pressed and does not allow water to pass is fixed to a power cord fixing portion 109 of the base 107 and a power cord fixing portion provided on a cover 102 having a similar structure facing the power cord fixing portion 109. It is pinched by a part (not shown).

As shown in the figure, the power cord fixing portion 109 that sandwiches the waterproof sealing material 110 of the power cord 103 includes a plurality of ribs having pressing portions that press the waterproof sealing material 110, and each rib of the power cord fixing portion 109 With the power cord fixing portion of the cover 102 having a plurality of opposing ribs, the cover 102 presses the waterproof seal material 110 of the power cord 103 when being fixed to the base 107.

  An edge portion of the cover 102 facing the apparatus outer wall was provided so as to cover the periphery of the base 107. As a result, it is possible to reduce water droplets entering between the cover and the base 107.

  With the above configuration, when the cover 102 is attached to the base 107, the power cord fixing portion 109 comes into close contact with the waterproof sealing material 110 in several layers, and the power cord 103 leading into the cover 102 is waterproof and dustproof. Is secured.

  The connector 111 of the power cord 103 uses an L type. This is because when the power cord 103 is attached to the outer wall 104 of the apparatus, the cable portion of the power cord 103 can be directed downward and the power cord inlet of the cover 102 can be directed downward. Will increase.

The internal shape of the cover 102 is provided so as to have a slight gap between the connector 111 insertion / removal direction and the left / right direction of the connector 111. For example, when the cover 102 is attached to the base 104 by changing the insertion / removal direction of the connector or the horizontal dimension of the connector 111, the contact portion between the connector 111 and the cover 102 is fixed. Therefore, it is possible to strongly prevent the connector 111 from being detached from the AC inlet 101.

  As a result, it is possible to prevent the power cord 103 from being disconnected and to prevent the connector portion from being in a dangerous state as if it has been disconnected from the AC inlet terminal.

  A sealing material is also provided on the contact surface between the inside of the cover 102 and the base 107. In this embodiment, it is affixed inside the cover 102 (not shown). In this way, the seal between the cover 102 and the base 107 and the seal between the cover 102, the base 107 and the power cord 103 are performed by the seal material inside the cover 102 and the seal material 110 of the power cord 103. This makes it possible to ensure the waterproof and dustproof properties inside the cover 102.

  As a result, the waterproof performance as the apparatus can be ensured, and since dust and moisture do not enter the commercial power cord connecting portion, it is possible to realize a configuration that can ensure safety at the same time. The cover 102 is structured to be fixed to the base 107 with screws 112, and can be easily removed when the power cord is connected.

  With the above-described configuration, even if the AC inlet 101 having a protruding portion larger than the device outer wall 104 is used, waterproof / dustproofness between the device outer wall 104 and the base 107 is ensured. For example, the AC inlet 101 and the connector Even if there is no waterproofness between the cable and 111, it is possible to ensure the same waterproof and dustproof performance as the waterproof special connector method and the workability of attaching the power cord, and to reduce the cost of parts. Become.

  In addition, compared to an inkjet recording device that has a commercial power cord connection inside the device, the power cord connection workability is improved, which reduces the risk of work errors and is also effective in terms of safety. I can expect.

  As described above, according to this embodiment, the power cord can be easily fixed and prevented from coming off, and the cost of components can be reduced. Further, even if an AC inlet connector is used, waterproof / dustproof performance equivalent to that of other systems, and fixing and retaining of the power cord can be easily realized, and the cost of parts can be suppressed.

  In addition, since the power cord can be easily connected locally, there is no need to ship the product with a dedicated power cord attached for each country or region where the product is shipped. Can be suppressed.

1 is a schematic perspective view of an ink jet recording apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an internal configuration of a cover of an AC inlet connecting portion illustrated in FIG. 1 according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... AC inlet, 102 ... Cover, 103 ... Power cord, 104 ... Outer wall of device, 105 ... Operation panel, 106 ... Power switch, 107 ... Base, 108 ... Base fixing screw, 109 ... Power cord fixing part, 110 ... Power source Cord waterproof seal material, 111... Power cord L-shaped connector, 112 .. cover fixing screw.

Claims (1)

In an ink jet recording apparatus in which a charge is applied to ink particles ejected from a nozzle and a deflecting electric field is passed to form printed dots on a printed material, an inlet connector provided in an opening on the outer wall of the apparatus, and a periphery of the inlet connector A base having a power cord fixing portion provided to face the outer wall of the apparatus and fixing a power cord, and a fixing portion provided to face the base and sandwiching the power cord between the power cord fixing portion of the base An inkjet recording apparatus comprising: a cover;

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