JP2012179277A - Response switch and device holding the response switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a response switch in which though it is a structure easily held by a hand for a long time, the holding to the body of an ophthalmic device or the like can be performed without forming any projections to the device body, and to provide a device that holds the response switch.SOLUTION: A supporting bracket 1c formed as a cantilever is inserted to be engaged with a roller catch mechanism 11 disposed at a body to be supported, thereby the response switch 1 itself is held to the body to be supported. The response switch 1 includes a cylindrical body 1a at the distal end of which a freely pushing push button switch 1b is disposed, the outer periphery of the body 1a has a finger holding part 1e formed so that the body 1a can be held by fingers, the supporting bracket 1c is formed to project to the outside at the middle position of the finger holding part 1e, and a stop part 1d in which the thickness of the supporting bracket 1c becomes great is formed in the width direction of the supporting bracket at the distal end part of the supporting bracket.

Description

    The present invention relates to a response switch that is used in ophthalmic devices and the like and detects a response of a subject, and relates to a response switch that is detachable from a main body of the device and a device that holds the response switch.

    Conventionally, in an ophthalmic device such as a perimeter, a response switch for detecting a response of a subject is provided as shown in Patent Documents 1 and 2. However, if the inspection time becomes long, it becomes difficult to hold the response switch by hand, and it is often accidentally dropped. In order to solve such a problem, as shown in Patent Documents 3 and 4, proposals have been made to make it easier to hold by hand for a long time by providing a hook for hooking a finger on the response switch, a holding part for passing the finger, and the like. ing.

JP-A-6-54804 JP2000-300156 JP 2000-325412 A JP 2004-303728 A

    However, in such a configuration, for example, as shown in FIG. 5, it is not considered how to set the response switch when not in use. Generally, in the case of a response switch with a hook as disclosed in Patent Document 3, it is conceivable to provide a device that hooks a hook somewhere in an ophthalmic device. On the other hand, in the case of Patent Document 4, a structure in which a hook is provided in the ophthalmic apparatus body and a portion through which the finger of the response switch is passed is hooked and held is conceivable. However, in any case, there is a concern that a certain structure is necessary for the main body, which becomes a protrusion, and the subject may accidentally catch his hand or face on the protrusion.

  Therefore, the present invention provides a response switch capable of being held on a device such as an ophthalmic device body without forming any protrusions while having a structure that can be easily held by hand for a long time. An object of the present invention is to provide a device that holds the response switch.

The first viewpoint for solving the above-described problem is to insert and engage the support bracket (1c) formed in a cantilever shape with the roller catch mechanism (11) provided on the supported body (2). , A response switch (1) configured to be able to hold itself to the supported body (2), wherein the response switch (1)
It has a cylindrical main body (1a) provided with a push button switch (1b) that can be pressed at the tip,
The outer peripheral part of the main body (1a) forms a finger gripping part (1e) capable of gripping the main body (1a) with fingers.
The support bracket (1c) is formed in an intermediate position of the finger grip (1e) so as to protrude outwardly,
At the tip of the support bracket (1c), a stopper portion (1d) having a thicker support bracket (T) is formed to bulge in the width (W) direction of the support bracket.
Is a point.

A second viewpoint for solving the above-described problem is a device (2) that holds the response switch (1), and
The device (2) has a main body (3) formed in a box shape as a whole,
A slit (10) is provided on the surface of the main body (3), and the support bracket (1c) is detachable,
Inside the main body (3) of the slit (10), the roller catch mechanism (11) is provided so that the support bracket (1c) can be held narrowly from both sides in the thickness (T) direction of the bracket,
It is a point that has been configured.

    A third viewpoint for solving the above-described problem is that the device (2) is an ophthalmic device.

Moreover, the 4th viewpoint for solving the subject mentioned above, the said apparatus is a perimeter (2),
The perimeter (2) has a body (3),
The front surface (3a) of the main body (3) is provided with a chin rest (5) and a heel rest (6) on which the face of the subject is arranged,
A visual field dome (7) for visual field measurement is provided inside the body (3) in front of the chin rest (5) and the pad rest (6),
The slit (10) is formed in a side portion of the front surface (3a).
Is a point.

    According to the present invention, since the support bracket (1c) is formed in a shape projecting outward at the intermediate position of the finger grip (1e) that can be gripped by a finger, the response switch (1) is not covered. When the subject holds the response switch (1), the support bracket (1c) for supporting the support (2) is held between the adjacent subject's fingers. be able to.

    Then, the response switch (1) prevents the main body (1a) from sliding in the directions of arrows E and F parallel to the axis (CT) direction of the main body (1a) in the palm of the subject. In addition to being held, the stopper portion (1d) is in contact with the outer peripheral portion of the subject's finger placed above and below the stopper portion (1d) to prevent the response switch (1) from rotating in the hand. Works. As a result, even if the hand holding the response switch (1) is sweated during a long measurement operation or the holding force for holding the response switch (1) is somewhat reduced due to fatigue or the like, the response switch (1) , It is securely held in the hand of the subject and effectively avoids unforeseen circumstances such as accidentally dropping the response switch (1) or failing to push the push button switch (1b) during the measurement. I can do it.

    Further, like the perimeter (2), an ophthalmic apparatus having a structure in which the chin rest (5) and the chin rest (6) are arranged on the front surface (3a) of the main body (3). If the response switch (1) is held in the side portion of the device front surface (3a) via the slit (10), the roller catch mechanism (11) for holding the response switch (1) is provided on the main body. It can be arranged inside, and the protrusion for holding the response switch (1) is not arranged on the front surface (3a) of the device, and safety is improved.

    Note that the numbers in parentheses are for the sake of convenience indicating the corresponding elements in the drawings, and therefore the present description is not limited to the descriptions on the drawings.

FIG. 1 is a perspective view showing an example of a perimeter to which an example of a response switch of the present invention is applied. FIG. 2 is a perspective view showing a state in which a response switch is removed from the perimeter of FIG. FIG. 3 is a perspective view showing an example of the response switch of the present invention. FIG. 4 is a partial cross-sectional view showing a state where the response switch of FIG. 3 is held in the perimeter main body. FIG. 5 is a perspective view showing a state in which a response switch is removed in a conventional perimeter.

    Embodiments of the present invention will be described below with reference to the drawings.

    As shown in FIG. 1, the perimeter 2 has a main body 3 formed in a box shape as a whole, and a chin rest 5 and a chin rest 6 are provided on the front surface 3 a of the main body 3. A response switch 1 is detachably provided on the right side of the main body 3 in FIG. 1, and a visual target is provided in front of the chin rest 5 and the chin rest 6, that is, in the main body 3 at the back of FIG. A hemispherical field dome 7 is provided. The visual field dome 7 is configured such that a visual target for visual field measurement (not shown) can be projected onto an arbitrary position within the visual field dome 7 by a known visual target presenting device built in the main body 3.

    The response switch 1 is connected to the main body 3 via a connection cord 9, and the response switch 1 has a main body 1a formed in a substantially cylindrical shape as shown in FIG. The outer peripheral part formed in the cylindrical shape of the main body 1a forms a finger gripping part 1e that can be gripped by fingers other than the thumb of the hand, such as an index finger, a middle finger, a ring finger, and a little finger. A push button switch 1b is provided at the upper end of FIG. 3 of the main body 1a. When the subject's thumb presses the push button switch 1b, a predetermined signal is sent from the response switch 1 via the connection cord 9. Output to the main body 3. A support bracket 1c, which is formed in a cantilever shape with a width W, is provided on the side of the push button switch 1b slightly from the middle part of the finger grip 1e of the main body 1a so as to protrude outward from the finger grip 1e. A stopper portion 1d is formed at the distal end of the support bracket 1c. The stopper portion 1d is formed in a columnar shape in the width direction of the support bracket 1c so that the thickness T of the support bracket 1c is slightly increased. The protruding length of the support bracket 1c outward from the main body 1a is slightly larger than the average thickness of an adult finger. When an adult subject grips the response switch 1, for example, The middle finger is formed so that the stopper portion 1d at the tip can be pinched in such a manner as to protrude slightly outward from between the fingers.

    Note that the position of the support bracket 1c in the finger gripping portion 1e does not necessarily have to be slightly closer to the push button switch 1b than the center portion of the finger gripping portion 1e. It is good also as a shape which arrange | positions at the connection cord 9 side and clamps the support bracket 1c between a middle finger and a ring finger, or between a ring finger and a little finger. That is, it is only necessary to form the bracket 1c portion between the both sides of the cylindrical finger gripping portion 1e other than the upper and lower ends in FIG.

    On the other hand, a rectangular slit 10 is provided in the right side of FIG. 2 of the front surface 3a which is the surface of the main body 3 of the perimeter 2, and the slit 10 supports the response switch 1 as shown in FIG. The bracket 1c is formed so as to be freely inserted and removed. A roller catch mechanism 11 is provided inside the main body 3 on the right side of the slit 10 of the main body 3 in FIG. 4, and the roller catch mechanism 11 has a plate spring 11 a formed in a C shape as a whole. A pair of rollers 11b and 11b are rotatably mounted on both ends of the leaf spring 11a so as to face each other, and the pair of rollers 11b and 11b are brought into contact with each other with a predetermined contact pressure by the elasticity of the leaf spring 11a. It is provided in the form of contact.

    Since the perimeter 2 has the above-described configuration, when the perimeter 2 measures the visual field of the subject's eye, the chin rest 5 shown in FIG. In addition, the eye part is pressed and brought into contact with the eye pad 6 so that the eye to be inspected in the anterior eye part of the subject is arranged at a predetermined visual field measurement position, that is, substantially at the center of the visual field dome 7. In this state, the visual field measurement of the eye to be examined is started with a known technique on the perimeter 2 via an operation unit such as a keyboard (not shown). At this time, the subject is in front of the main body 3 of the perimeter 2. The response switch 1 held in the slit 10 on the right side of FIG. 1 of 3a is held with the right hand.

    As shown in FIG. 4, in the response switch 1, the support bracket 1c of the main body 1a is held between the pair of rollers 11b and 11b of the roller catch mechanism 11 by a spring 11a from both sides in the thickness direction due to the elasticity of the spring 11a. Are engaged. Further, when the response switch 1 is not used, the stopper portion 1d swelled at the tip of the support bracket 1c protrudes to the right in FIG. 4 from the pair of rollers 11b and 11b. Even if the response switch 1 is slightly pulled in the direction indicated by the arrow A, that is, in the pulling direction, the stopper 1d can move the pair of rollers 11b and 11b in the direction indicated by the arrow D against the elasticity of the leaf spring 11a. Is not supported, it is held by the roller catch mechanism 11 so that it is reliably supported.

    When the subject holds the response switch 1, the subject grasps the main body 1 a of the response switch 1 with his / her hand and pulls the main body 1 a in the direction of arrow A with a force greater than a predetermined force. . Then, the pulling force causes the stopper portion 1d of the main body 1a to move in the direction of arrow A while moving the pair of rollers 11b and 11b in the direction of arrow D against the elasticity of the leaf spring 11a, and as a result, the stopper portion 1d. Comes out of the slit 10 and is held in the hand of the subject. In this state, the examiner sets the body 1a of the response switch 1 to the subject, for example, the support bracket 1c between the index finger and the middle finger, or the middle finger and the ring finger, and the stopper portion 1d at the tip of the finger. It is instructed to hold it in such a way that it is slightly protruded outward from the gap.

    Then, the main body 1a of the response switch 1 is held in such a manner that the support bracket 1c is sandwiched between adjacent fingers of the subject between the fingers of the subject, and the main body 1a is held in the palm of the subject. The main body 1a is securely held so as not to slide in the directions of arrows E and F parallel to the direction of the axial center CT of the main body 1a. Further, since the stopper portion 1d bulging at the tip of the support bracket 1c is held so as to protrude slightly outward from between the fingers of the subject, the main body 1a of the response switch 1 is the main body axis CT. If the stopper portion 1d is in contact with the outer peripheral portion of the subject's finger placed above and below the stopper portion 1d, further rotation in the directions of the arrows G and H occurs. Since it acts to prevent, the main body 1a of the response switch 1 is also appropriately prevented from rotating around the axis CT.

    As described above, the movement of the support bracket 1c provided with the stopper portion 1d in the direction of the axis CT and the rotation around the axis CT are appropriately prevented only by the eye 19 to be gripped by the body 1a of the response switch 1. Therefore, even if the hand holding the response switch 1 is sweated during a long-time measurement operation or the holding force for holding the response switch 1 is somewhat reduced due to fatigue or the like, the response switch 1 is not attached to the subject's hand. Thus, it is possible to effectively avoid unexpected situations such as accidentally dropping the response switch 1 during measurement or failing to push the push button switch 1b.

    In this way, when the subject holds the response switch 1, an appropriate target is displayed in the visual field dome 7, and when the subject recognizes the target, the response switch 1 is displayed to the subject. When the push button switch 1b is pressed and is not recognized, the visual field of the subject's eye is measured without causing the subject to press the push button switch 1b of the response switch 1. . During this measurement, the subject puts the face on the chin rest 5 and presses the face against the paddle 6, that is, the face is very close to the front surface 3 a of the main body 3 of the perimeter 2. ing. Therefore, when the subject inadvertently moves the hand holding the response switch 1 or moves the face to the left or right, if there is any protrusion on the front surface 3a of the main body 3, Since there is a risk that the hand or face is caught on the projection, it is necessary to configure no projection on the front surface 3a of the main body 3.

    In this respect, the roller catch mechanism 11 that holds the response switch 1 on the front surface 3a of the main body 3 is housed inside the main body at the rear of FIG. It is safe because it does not protrude onto the front surface 3a.

    In this way, when the measurement is performed and the measurement is completed, the examiner urges the subject to move the response switch 1 back to the roller catch mechanism 11 on the front surface 3a while separating the face from the main body 3. When returning the response switch 1 to the roller catch mechanism 11, as shown in FIG. 4, the support bracket 1c of the main body 1a of the response switch 1 is inserted into the slit 10 of the front surface 3a in the arrow B direction. Then, the bulged stopper portion 1d at the tip of the support bracket 1c enters between the pair of rollers 11b and 11b, and moves the rollers 11b and 11b in the direction of arrow D in a form that resists the elasticity of the leaf spring 11a. When the stopper portion 1d moves in the direction of arrow B in FIG. 4 between the pair of rollers 11b and 11b and protrudes to the right in the drawing of the rollers 11b and 11b, the pair of rollers 11b and 11b The intermediate portion, which is thinner than the stopper portion 1d, is held at a narrow pressure from the vertical direction in the figure, and the main body 1a of the response switch 1 is held on the front surface 3a of the main body 3 by the roller catch mechanism 11.

    As described above, in order to pull out the main body 1a of the response switch 1 in the direction of arrow A, a pulling force sufficient to move the pair of rollers 11b and 11b in the direction of arrow D against the elasticity of the leaf spring 11a. Since it is necessary to act on the main body 1a, the response switch 1 is securely held on the front surface of the main body 3 in a normal case.

1 …… Response switch 1a …… Main body 1b …… Push button switch 1c …… Support bracket 1d …… Stopper 1e …… Finger grasping part 2 …… Supported body, equipment (perimeter)
3 ... Main body 10 ... Slit 11 ... Roller catch mechanism

Claims (4)

This is a response switch configured so that a support bracket formed in a cantilever shape is inserted into and engaged with a roller catch mechanism provided on a supported body so that it can be held by the supported body. The response switch
It has a cylindrical main body with a push button switch that can be pressed at the tip,
The outer peripheral part of the main body forms a finger gripping part capable of gripping the main body with fingers,
The support bracket is formed at an intermediate position of the finger grip portion so as to protrude outward,
At the tip of the support bracket, a stopper portion having a thickened support bracket is formed to bulge in the width direction of the support bracket.
A response switch characterized by that. A device holding the response switch according to claim 1,
The device has a main body formed entirely in a box shape,
A slit is provided on the surface of the main body so that the support bracket can be inserted and removed,
Inside the body of the slit, the roller catch mechanism is provided so that the support bracket can be held with high pressure from both sides in the thickness direction of the bracket,
A device that holds the configured response switch. The device according to claim 2, wherein the device is an ophthalmic device. The device is a perimeter;
The perimeter has a main body,
On the front surface of the main body, a chin rest and a chin rest on which the subject's face is placed are provided,
A visual field dome for visual field measurement is provided inside the main body in front of the chin rest and the padding,
The slit is formed in the side part of the front surface,
The device according to claim 3, wherein

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