JP2013037566A - Input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input device for extremely preventing position deviation in a determining operation while applying a reasonable stroke to the determining operation.SOLUTION: An input device includes a normally closed switch 22 as detection means for detecting that a user starts to push in a touch panel 13. A control device is configured to, when the normally closed switch 22 is switched from an ON state to an OFF state according as the user pushes in the touch panel 13 with the finger, store the touch position of the finger with which the touch panel 13 has been touched, and to, when the OFF state of the normally closed switch 22 is continued in a set time Ams set in advance, determine that a determining operation has been performed at the stored touch position.

Description

  The present invention relates to an input device including a touch panel.

  In an input device equipped with a touch panel, the position of a finger touched on the surface of the touch panel is detected by a touch position detection means, and the touch position is detected by, for example, a tactile switch that is pressed by the touch panel. There is known one that determines and operates the item selected in (see, for example, Patent Document 1).

  In such a case, the tact switch for the determination operation requires a predetermined stroke until it is turned on, and the position of the operating finger is operated during the stroke when the touch panel is pressed after the touch panel is touched. There is a case where an unintended item is determined due to a deviation from the start time. As a countermeasure against this, for example, it is conceivable to make the stroke of the push switch for decision operation extremely short, but it is used when the touch panel is moved slightly or the touch panel is moved slightly by vibration. There is a possibility that the operability may be deteriorated, for example, the determination operation is performed against the intention of the person.

JP 2009-298380 A

  Therefore, an object of the present invention is to provide an input device that can prevent a positional shift during the determination operation as much as possible while having an appropriate stroke for the determination operation.

  In order to achieve the above-described object, the input device of the present invention is provided so as to be displaceable in the vertical direction and biased to the original position above in a non-pressed state, and when a finger is touched on the surface A touch panel having a touch position detection means for detecting the touch position, and a push start detection means for detecting a start of pressing of the touch panel as the touch panel is displaced downward from the original position; The touch position detected by the touch position detection means when the push start detection means detects the push start is stored, and a state in which the push start detection means detects the push start is set in advance. And a determination unit that determines that a determination operation has been performed at the stored touch position when the touch panel has been stored. Start detecting means, wherein it is possible displacement in the further lower than position detecting start pushing.

  When the user selects an item on the touch panel and performs a determination operation, the user first touches the selected item on the touch panel and pushes the touch panel in that state. The determination means stores the touch position touched by the finger when the push start detection means detects the push start of the touch panel, and the state where the push start detection means detects the push start continues for a preset time. In this case, it is determined that the determination operation has been performed at the stored touch position. Therefore, even if the position of the finger to be operated is deviated from the start of the operation when the touch panel is pressed, the item that the user wants to operate is specified. be able to. Further, since the touch panel can be displaced further downward than the position where the pressing start detection means detects the pressing start, it is possible to secure a stroke necessary for the determination operation. Therefore, according to the present invention, it is possible to prevent a positional shift during the determination operation as much as possible while having an appropriate stroke for the determination operation.

The input device of one Embodiment is shown, (a) is a top view, (b) is a longitudinal front view which follows the XX line of (a). Block diagram showing electrical configuration Flow chart for detecting push-in operation

  Hereinafter, an input device according to an embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1, the outer shell of the input device includes a body 1 having a rectangular cylindrical shape, a bezel 2 fixedly disposed on the upper portion of the body 1, and a cover 3 fixedly disposed on the lower portion of the body 1. Has been. Among these, inside the body 1, a partition portion 4 is integrally provided so as to be positioned at an intermediate portion in the vertical direction so as to partition the inside up and down, and at four positions below the partition portion 4 are cylindrical. The boss portion 5 is integrally provided. A fixed contact mounting portion 6 is integrally provided at a substantially central portion of the partition portion 4, and a concave spring receiving portion 7 is integrally provided inside the fixed contact mounting portion 6. Further, in the partition portion 4, a rectangular cutout portion 8 is formed on the left side of FIG. The bezel 2 has a rectangular opening 9 at the center, and has a rectangular frame shape when viewed from above.

  On the upper part of the lower cover 3, a wiring board 11 made of a printed wiring board is arranged via a spacer 10. The cover 3 and the wiring board 11 are fastened to the lower part of the body 1 by screwing screws 12 inserted from below the cover 3 through the spacer 10 and the wiring board 11 and screwing them into the boss part 5. It is attached.

  A touch panel 13 is disposed in the body 1 between the partition 4 and the bezel 2 so as to be displaced in the vertical direction. The touch panel 13 has a rectangular plate shape larger than the opening 9 of the bezel 2, and includes a capacitive touch position detection unit and a liquid crystal display unit. The touch position detection means detects the touch position (coordinates) when a human finger is touched on the upper surface of the touch panel 13. The display means displays items selected by the user. An operation area 14 (see FIG. 1A) on the touch panel 13 is an area slightly larger than the opening 9 of the bezel 2. On the lower surface of the touch panel 13, a convex portion 15 protruding downward is integrally provided. The lower end portion of the convex portion 15 is inserted into the central portion of the fixed contact mounting portion 6 so as to be vertically movable from above.

  One end portion 16 a of the flexible printed circuit board 16 is connected to one end portion (left end portion in FIG. 1) of the touch panel 13. The other end 16 b of the flexible printed board 16 is connected to the lower surface of the wiring board 11 through the notch 8 of the partition part 4 and the notch 17 formed in the wiring board 11. Therefore, the touch panel 13 and the wiring board 11 are electrically connected by the flexible printed board 16.

  A pair of fixed contacts 19 are fixedly attached to the fixed contact mounting portion 6 so as to be positioned on both the left and right sides of the convex portion 15. One end portions of these fixed contacts 19 are electrically connected to the wiring board 11 via connection portions 19a. Between the lower surface of the convex part 15 and the spring receiving part 7, the movable contact 20 is arrange | positioned in the state which can be moved up and down. A compression coil spring 21 that constitutes an urging means is disposed between the lower surface of the movable contact 20 and the spring receiving portion 7, and the urging force of the compression coil spring 21 causes the movable contact 20 to be paired. It contacts the fixed contact 19 from below. Further, the upward biasing force of the compression coil spring 21 biases the touch panel 13 to the upper original position shown in FIG. The peripheral portion of the upper surface of the touch panel 13 is in contact with the lower surface of the peripheral portion of the opening 9 of the bezel 2 from below.

  Here, the pair of fixed contacts 19 and the movable contact 20 that contacts and separates from the pair constitute a normally closed switch 22. The normally closed switch 22 is in an ON state in which the movable contact 20 contacts the fixed contact 19 and the circuit is closed when the touch panel 13 is located at the upper original position shown in FIG. ing. This normally closed switch 22 constitutes a push start detection means for detecting the push start of the touch panel 13.

  The wiring board 11 is provided with a control device 23 (see FIG. 2). The control device 23 is constituted by a microcomputer, for example, and functions as a determination unit of the present invention. The control device 23 receives a touch position detection signal from the touch position detection means of the touch panel 13 and a signal of the normally closed switch 22. The control device 23 has a function of controlling the display unit of the touch panel 13 and controlling the control target 24 based on these signals and a control program provided in advance.

Next, the operation of the above configuration will be described.
First, the touch panel 13 is located at the original position shown in FIG. 1B in a non-pressed state, and a plurality of selection items are displayed on the display means of the touch panel 13. In this state, when the user selects and executes one selection item from among the plurality of displayed selection items, the user selects his / her finger from the plurality of selection items displayed on the touch panel 13. Among them, the desired selection item is brought into contact with the displayed position, and the touch panel 13 is pushed downward in that state (see arrow P in FIG. 1B). Accordingly, the touch panel 13 is displaced downward from the original position against the urging force of the compression coil spring 21, so that the movable contact 20 is also displaced downward via the convex portion 15. When the movable contact 20 is slightly displaced downward, the movable contact 20 is separated downward from the fixed contact 19, and the circuit of the normally closed switch 22 is opened to be turned off. The control device 23 determines that the pressing of the touch panel 13 is started when the normally closed switch 22 is switched from the on state to the off state. At this time, the touch position (coordinates) detected by the touch position detecting unit is determined. ) And the selected item is stored. Then, the control device 23 measures the elapsed time that the OFF state has continued from the time when the normally closed switch 22 switches to the OFF state, and the elapsed time is set to a preset time Ams (the user touches the touch panel 13). If it is continued for a sufficient time until the stroke is felt after the pushing operation (for example, 200 ms), it is determined that the determination operation has been performed, it is determined that the item corresponding to the stored touch position has been determined, and the item The corresponding control object 24 is controlled.

  FIG. 3 shows an example of the control content of the control device 23 at this time, and the control content of the control device 23 will be described with reference to FIG. First, the control device 23 determines whether or not the normally closed switch 22 is on (step S1). When the touch panel 13 is not pushed, the normally closed switch 22 is on. If it is determined in step S1 that the normally closed switch 22 is on, the process proceeds to step S2 according to “YES”, and if there is a stored touch position (coordinates), it is reset. It waits until 22 becomes an OFF state (step S3).

  And when a user contacts a finger on the touch panel 13 and starts pushing of the touch panel 13, the normally closed switch 22 will switch from an ON state to an OFF state. When the control device 23 detects that the normally closed switch 22 has been switched from the on state to the off state, the control device 23 determines that the touch panel 13 has been pushed, and proceeds to step S4 according to “YES”. The touch position (coordinates) detected by the touch position detecting means at the time when the state of the mold switch 22 is turned off is stored, and the off state continues from the time when the normally closed switch 22 is turned off. Start measuring the elapsed time.

  The control device 23 determines whether or not the elapsed time has continued for a preset set time Ams (for example, 200 ms) (step S5), and returns to step S1 when determining that the elapsed time has not elapsed. When the control device 23 determines that the elapsed time that the OFF state has continued from the time when the normally closed switch 22 switches to the OFF state has reached the set time Ams, the control device 23 determines that the determination operation has been performed, and stores the memory. It is determined that the item corresponding to the touched position has been determined, and the control object 24 corresponding to the item is controlled (step S6). When the normally closed switch 22 is switched to the on state before the elapsed time that the off state has continued has reached the set time Ams since the normally closed switch 22 has been switched to the off state, The stored touch position is reset (steps S1 and S2), and the determination operation is not determined.

  According to the above-described embodiment, the control device 23 stores the touch position that the finger touches at the time when the normally closed switch 22 that is the pressing start detection unit is switched to the OFF state where the touch panel starts to be pressed, When the normally closed switch 22 is kept off for a preset time Ams, it is determined that the determination operation has been performed at the stored touch position. Therefore, when the touch panel 13 is pressed, the position of the finger to be operated is determined. Even if it deviates from the time when the operation is started, the item that the user wants to operate can be specified. In addition, the touch panel 13 can be displaced further downward from the position where the normally closed switch 22 detects the start of pressing (the position where the switch is switched off), so that the stroke necessary for the determination operation is sufficiently secured. Can do. Therefore, according to the present embodiment, it is possible to prevent a positional shift during the determination operation as much as possible while having an appropriate stroke for the determination operation.

  By using the normally closed switch 22 as the pressing start detection means, it is possible to detect the moment when the touch panel 13 starts to be displaced downward, so that the start of pressing the touch panel 13 can be detected well.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
The pushing start detecting means is not limited to the normally closed switch 22, and a normally open switch, a displacement sensor, or a load sensor may be used as long as it can detect the start of the downward displacement of the touch panel 13. Is also possible.

In addition, when the control device 23 determines that the determination operation is being performed, it is preferable to notify the user of this by voice or vibration.
Display means for displaying items and the like are not limited to those provided integrally with the touch panel 13, and may be provided separately from the touch panel 13.

  In the drawing, reference numeral 13 denotes a touch panel (touch position detection means), 22 denotes a normally closed switch (pressing start detection means), and 23 denotes a control device (determination means).

Claims (2)

Push-in operation with touch position detection means that can be displaced in the vertical direction and is urged to the upper original position in a non-pressed state and detects the touch position when a finger touches the surface Touch panel,
A pressing start detecting means for detecting the pressing start of the touch panel as the touch panel is displaced downward from the original position;
The touch position detected by the touch position detecting means when the push start detecting means detects the push start is stored, and the state where the push start detecting means detects the push start is set in advance. Determination means for determining that a determination operation has been performed at the stored touch position when the time continues,
The input device according to claim 1, wherein the touch panel can be displaced further downward than a position where the pressing start detection means detects the pressing start.   The push-in start detecting means is a normally closed switch that is turned on when the touch panel is located at the original position, and the touch panel is displaced downward from the original position to switch to an off state. The input device according to claim 1, wherein the start of pressing is detected.

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