JP2002200376A - Sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure an operation by property controlling the fitting tilt angle of a display means (e.g. a liquid crystal display means) to make it easily visible and to ensure the operation by properly inclining the liquid crystal display means in particular within a visibility angle allowable range to make it easily visible. SOLUTION: This sewing machine is provided with the display means fitted at a predetermined prescribed position from the needle position of the sewing machine, a means for instructing the fitting angle control of the display means to a sewing machine body, and a means for controlling the fitting tilt angle of the display means from the present fitting state to the state corresponding to a seated position based on the control instruction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device for controlling an inclination angle of a display device (for example, a liquid crystal display device, etc.) as appropriate to make it easy to see. Is appropriately tilted within the allowable viewing angle range,
The present invention relates to a sewing machine that can reliably operate the liquid crystal display device by making it easier to see.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display means is provided at a sewing machine column on the front surface of a sewing machine or at a position above the same, and a desired embroidery or ordinary sewing is performed by appropriately operating the liquid crystal display. In this case, the user of the sewing machine looks at a position near the needle position of the sewing machine head. In this case, if the viewing angle of the liquid crystal display means (screen) is within the allowable range, the content of the liquid crystal display means can be confirmed.

[0003]

However, when the sewing machine is operated, when the head position of the sewing machine user is approaching the needle position, the liquid crystal display means is out of the allowable viewing angle range. Occasionally, it was difficult to see or became invisible. For this reason, the current situation is that the sewing machine is operated with the head position of the sewing machine user changed so that it is troublesome to change the contents of the liquid crystal display means by pattern stitching or the like, and there is a disadvantage that the operation is apt to be erroneously performed. Was. Therefore, it is also desired to appropriately control the tilt angle of the liquid crystal display means.

On the other hand, in a car navigation device,
Car navigation device screen inclination control device
000-39847) exists as a known document.
This control device automatically adjusts the tilt position of the screen according to the solar radiation situation. In particular, the tilt angle is the tilt of the Y axis of the screen with respect to the fixed horizontal X axis, and only the tilt angle of the Y axis is controlled.
The configuration was not necessarily oriented to the driver. For this reason, the present invention solves the problem that the attachment angle of the display means is appropriately controlled to make it easy to see, or the liquid crystal display means is appropriately inclined within the allowable viewing angle range to make the liquid crystal display means easy to see. It was developed as an issue (purpose).

[0005]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, has found that the present invention provides a display attached at a predetermined position from the needle position of the sewing machine. Means for controlling the mounting angle of the means for displaying to the sewing machine main body, and the mounting inclination angle of the means for displaying based on the control command from the current mounting state. Since the sewing machine is provided with a means for controlling the display in a state corresponding to the position, the means for displaying can be easily seen, and the operation of the means for displaying can be ensured. In particular, by controlling the mounting inclination angle from the current mounting state to a state corresponding to the seating position, the storage can be made extremely compact in the mounting state.

[0006] Also, a display means mounted at a position at a distance X from the needle position of the sewing machine, a means for controlling and controlling the mounting angle of the display means with respect to the sewing machine main body, and the control means The distance X based on the command
And a means for controlling a mounting inclination angle of the means for displaying from the currently mounted state to a state corresponding to the seating position based on the position of the distance Y between the needle position and the sitting position of the sewing machine. The distance X and the distance Y
And mounting angle control of the means for displaying based on the position. Further, the means for controlling the mounting inclination angle further controls the inclination angle by using the distance Z from the seating position to the eye level. Reliable angle control can be performed.

Further, the display means is a liquid crystal display screen having a viewing angle, and the controlled tilt angle is a sewing machine which is within a permissible range of the viewing angle of the liquid crystal display screen. The mounting angle can be controlled within the allowable angle range, and there is an advantage that the operation of the liquid crystal display means can be reliably performed by making the liquid crystal display means easy to see.

Further, the control commanding means may be a sewing machine which is a power input means, or the control commanding means may be a sewing machine which indicates a part of a screen (such as a touch panel). The inclination can be controlled more accurately by making the input means more reliable. Further, the means for displaying may be a sewing machine that is stored in an initial state based on a signal, or the current mounting state may be a sewing machine that is an initial state in which the means for displaying is stored. By doing so, by returning to the initial state, the next operation is facilitated, and compact storage is always possible.

[0009] Further, means for displaying attached to a predetermined position from the needle position of the sewing machine, means for adjusting the mounting inclination angle of the means for displaying, and the adjusting operation A means for driving an angle of attachment of the means for displaying to the sewing machine body based on an adjustment signal of the means for performing the operation, and means for holding the driven control position. Or, or means for displaying attached at a predetermined position from the needle position of the sewing machine,
Means for driving an angle of attachment of the means for displaying to the sewing machine body based on the adjustment signal for the display, and means for holding the driven control position;
Means for storing the driven control position, and a sewing machine that drives the means for driving the mounting angle control based on the readout signal and controls the drive to the stored control position, Further, the means for storing the driven control position is a means for holding even after the power is turned off, and a sewing machine or the like configured to control the drive to the stored control position when the power is turned on. At the same time as the insertion, if the sewing machine user is the same, the stored inclination angle can always be stored and controlled, and the means for displaying can be appropriately mounted and reproduced, making the means for displaying easier to see. Operation can be assured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external view of a sewing machine of the present invention. A liquid crystal display means A is provided on the sewing machine main body 1. As shown in FIGS. 2 and 5, the liquid crystal display means A is provided with a rectangular outer frame 2, an inner frame 3, and a liquid crystal display screen 4 at a rectangular opening 1a of the sewing machine main body 1. . The liquid crystal display screen 4 has a predetermined viewing angle. On the diagonal line of the liquid crystal display screen 4 or the inner frame 3, a first sonar 9 and a second sonar 10 as distance sensors are provided. That is, the position detecting means 11 is composed of both components.

The outer frame 2 is provided with vertical axes (Y
Shafts 5, 5 are inserted into holes formed above and below the opening 1 a, and the driving force of the first motor 6 provided on the outer frame 2 about the vertical shafts (Y axis) 5, 5. Is configured to be swingable. The liquid crystal display screen 4 is integrated with an inner frame 3 provided so as to surround the liquid crystal display screen 4, and the inner frame 3 includes horizontal axes (X-axis) 7,
7 are inserted into holes formed on the left and right sides of the outer frame 2, and swing about the horizontal axes (X-axis) 7, 7 by the driving force of a second motor 8 provided on the inner frame 3. It is configured to be possible. Thus, the liquid crystal display screen 4 is configured to be swingable with respect to the X-axis and the Y-axis of the sewing machine main body 1, and is driven and controlled to be tilted at an appropriate tilt angle (see FIG. 2).

Next, the angle control of the liquid crystal display screen 4 will be described. The angle control device basically comprises a central processing unit (CPU) 20, input means 21, and tilt adjustment control means 25 for operating the mounting tilt angle of the liquid crystal display screen 4. The tilt adjustment control means 25
Also includes the first motor 6 and the second motor 8. Further, if necessary, storage means 26 for controlling the tilt within the permissible range of the viewing angle of the liquid crystal display screen 4 by the tilt adjustment control means 25 and storing the value of the tilt control angle is provided. By operating the input means 21, the value stored in the storage means 26 is appropriately read, and the tilt control angle can be reproduced within the allowable viewing angle range of the liquid crystal display screen 4. The allowable range of the viewing angle is about 60 degrees in the Y-axis direction (left-right rotation direction) and about 30 degrees in the X-axis direction (vertical rotation direction). The input means 21
A seating detecting means 2 having a configuration in which a sensor or the like is provided on a sewing head or the like of the sewing machine main body 1 to detect seating.
2, or the tilt command operating means 23 using a switch or the like. The tilt command operating means 23 may be a power input means. Further, the tilt command operation means 23 for performing the control command is provided on the liquid crystal display screen 4.
May refer to a part of the touch panel.

First, as shown in FIGS. 6 and 9, the position of the needle bar as viewed in plan is defined as the needle position p, and the center of the position as viewed in plan (the seating position) on which the sewing machine user sits is shown. It is assumed that the seating position is n. Further, the center of the liquid crystal display screen position viewed in a plane is m. The distance between the needle position p of the sewing machine and the liquid crystal display screen position m is a fixed distance X, the distance between the needle position p of the sewing machine and the sitting position m is Y, and the distance from the sitting position m to the eye level is defined as Y. Let the distance be Z. Here, in the Z direction, if the height from m to the center position of the liquid crystal display screen 4 is Z ₁ , and the height from n to the needle position p is Z ₂ , the liquid crystal display screen as a height value The value from the center position of 4 to the eye height is Z ₀ = Z−Z ₁ −Z ₂
Becomes The user of the sewing machine may have a certain amount of variation in sitting height or the like, but may have a displacement error of about 20 cm. In the Y direction, the parallel distance from the needle position to the liquid crystal display screen 4 position and Y _1, when a parallel distance to the position of the eyes from the seated position m and Y _2, the liquid crystal display screen 4 position from the position of the eye The parallel distance Y ₀ = Y−Y ₁ −Y ₂ . Y ₀ also varies depending on the preference of the sewing machine user, but the displacement error may be about 20 cm. Further, the distance between the first sonar 9 position of the left side of the liquid crystal display screen from the left eye position and H _1, second from the right eye position of the right side of the LCD display screen 2
The distance between the sonar 10 position is H _2. The means for determining the distance in this manner is referred to as position detecting means 11.
For Y ₁ , Y ₂ , Z ₁ , Z _2, etc., about 10 cm to about 20 cm may be empirically set as allowable values in advance as allowable ranges.

The order of operation by the tilt command operation means 23
Will be described based on a flowchart. First,
Turn on the sewing machine power supply (see S1), and
Press the tilt operation button 23a for controlling the angle of (S
2). Then, the position of the eyes of the sewing machine user and the liquid crystal
Distance H between display means A and first sonar 9₁And eye position
Distance H to second sonar 10_TwoAre measured respectively (S
3). That distance H ₁Or distance H_TwoExceeds about 80cm
Is determined (see S4).
Means that the liquid crystal display screen 4 is difficult to see,
The measurement is stopped without controlling the inclination (see S5). And
The user of the sewing machine approaches or the liquid crystal display means A
The operation starts when the user touches the relevant input means (see S6).
Return to step S3, and measure the distance again.

[0015] If the measurement distance in S4 does not exceed about 80cm, for the liquid crystal display screen 4 of the angle correction of the liquid crystal display device A, the X, Y, from Z ₀ of the liquid crystal display screen 4 Angle control is performed by the first motor 6 and the second motor 8 about the vertical axis (Y axis) 5 and the horizontal axis (X axis) 7 respectively (see S7). Then, the aforementioned H ₁ -H ₂ = α
Is determined to be about 2 cm (see S8), and when the value is within about 2 cm, it is within the viewing angle of the liquid crystal display screen 4 as viewed from the sewing machine user, and the measurement is completed. Then, the motor stops (see S9). H ₁ −H ₂ =
In the case of α, the angles θ ₁ and θ ₂ are different (see FIG. 7), but when α ≒ about 2 cm, θ ₁ ≒ θ
₂ (see FIG. 8). In this state, the liquid crystal display screen 4 is within the viewing angle, and the liquid crystal display screen 4 can be accurately and clearly viewed.

Further, in the case of a sewing machine user who has performed such an angle measurement even once, each unique angle control value (data) is stored in the storage means 26 as necessary, and the next time, When the same sewing machine user starts the sewing machine, the angle is instantly controlled (see S10).

Further, without automatically performing the tilt correction by the tilt adjustment control means 25, the angle on the left and right sides or the up and down sides may be appropriately adjusted by manual operation by the tilt operation means 24 operating in four directions. Even by this manual operation, the liquid crystal display screen 4 can be viewed accurately and clearly.

As shown in FIG. 10, a ball-shaped rotator 30 fixed at a rear position of the inner frame 3 fixed to the liquid crystal display screen 4 is supported by a spherical bearing 31.
In some cases, the attached inner frame 3 may be configured to be freely tilted vertically and horizontally.

In the embodiment of the present invention, the liquid crystal display means A is provided as having a viewing angle. However, it is also possible to use electroluminescence having no viewing angle or other display means. In some cases, the mounting inclination angle is roughly controlled from the distance between X and Y excluding the Z. further,
In some cases, the inclination angle of attachment to the display means is controlled from the current attachment state to a state corresponding to the seating position. In addition, the display means is stored as an initial state in which the display means is stored as a normal mounting state, and is always stored compactly.

[0020]

According to the present invention, the means for displaying can be easily seen, and the operation of the means for displaying can be ensured. In particular, control can be performed from the mounted state to a state corresponding to the seating position. Further, it is possible to control the mounting angle of the means for displaying based on the position of the distance X and the distance Y. Further, by controlling including the distance Z, more reliable angle control can be performed. In addition, by using the liquid crystal display means A having a viewing angle as a means for displaying, the mounting angle can be controlled within a permissible range of the viewing angle, and by making the liquid crystal display means easy to see, the liquid crystal display means A There is an advantage that operation can be assured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sewing machine equipped with the present invention.

FIG. 2A is a front view of a mounting portion of a liquid crystal display means. FIG. 2B is a central transverse cross-sectional view of FIG.

FIG. 3 is a block diagram showing a main configuration of the present invention.

FIG. 4 is a flowchart showing tilt control according to the present invention.

FIG. 5 is a perspective view of a liquid crystal display unit.

FIG. 6 is a schematic plan view showing an operation state.

FIG. 7 is a schematic plan view showing an operation state.

FIG. 8 is a schematic plan view showing an operation state.

FIG. 9 is an X, Y, Z related diagram for a liquid crystal display screen.

FIG. 10 is a schematic view showing a main part of another embodiment of the present invention.

[Explanation of symbols]

 A: liquid crystal display means 2: outer frame 3: inner frame 4: liquid crystal display screen

Claims (4)

[Claims] 1. Means for displaying attached at a predetermined position from the needle position of the sewing machine, and means for controlling and instructing the mounting angle of the means for displaying with respect to the sewing machine main body. And a means for controlling a mounting inclination angle of the means for displaying from the current mounting state to a state corresponding to a seating position based on the control command. 2. A means for displaying attached to a position at a distance X from the needle position of the sewing machine, a means for controlling and instructing an attaching angle control of the means for displaying to the sewing machine main body, and the control Means for controlling the mounting inclination angle of the means for displaying from the current mounting state to a state corresponding to the seating position based on the distance X, the needle position of the sewing machine and the distance Y between the seating position based on a command. A sewing machine comprising: 3. The apparatus according to claim 2, wherein said means for controlling the mounting tilt angle further controls the tilt angle using a distance Z from the seating position to the eye level.
The sewing machine described in 1. above. 4. The liquid crystal display screen having a viewing angle as the means for displaying, and the mounting inclination angle controlled is within an allowable viewing angle range of the liquid crystal display screen. 4. The sewing machine according to 2 or 3.