JP7144255B2 - ophthalmic equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic apparatus in which an examiner manually adjusts the horizontal position of an ophthalmologic apparatus main body.

In ophthalmology, observation of an eye to be examined, measurement of various eye characteristics, and treatment such as laser surgery are performed using various ophthalmologic apparatuses. An ophthalmologic apparatus includes an ophthalmologic apparatus body containing various optical systems corresponding to purposes such as observation, measurement, and treatment. When observing, measuring, and treating an eye to be examined using an ophthalmic device, the main body of the ophthalmic device for the eye to be examined should be considered from the viewpoints of the image quality of the observed image, the measurement accuracy (accuracy) of eye characteristics, and the accuracy of treatment. Alignment (position adjustment) is important. For this reason, the ophthalmologic apparatus is provided with a configuration for performing alignment adjustment by moving the main body of the ophthalmologic apparatus with respect to the base.

For example, the ophthalmologic apparatus disclosed in Patent Documents 1 and 2 includes a base, a pedestal supported horizontally (forward, backward, left and right) with respect to the base, and an ophthalmic device main body provided on the upper surface of the pedestal. an operation lever provided on the upper surface of the pedestal on the side of the examiner (also referred to as an operator or operator) from the main body of the ophthalmologic apparatus; (friction plate); Then, when the examiner performs a movement operation (horizontal movement operation, tilting operation, etc.) for manually moving the gantry in the horizontal direction with respect to the operation lever, the force of this movement operation is transmitted to the gantry, thereby moving the gantry and the ophthalmologic apparatus. The body can be moved horizontally.

Further, in the ophthalmologic apparatus described in Patent Document 2, a permanent magnet is provided on one of the operating lever and the friction plate, and an electromagnet is provided on the other. It controls the magnitude of the frictional force that occurs between them.

Japanese Patent Application Laid-Open No. 2003-235808 JP 2016-198306 A

By the way, in the ophthalmologic apparatus described in Patent Document 1, it is not possible to adjust the amount of force (hereinafter referred to as the amount of operation force) required for the movement operation of the operation lever. For this reason, depending on the examiner, the operating force amount of the operating lever may be too small, or conversely, the operating force amount of the operating lever may be too large. In this case, it is necessary to request the manufacturer of the ophthalmologic apparatus to adjust the amount of force required to operate the operating lever, which is extremely time-consuming and causes a problem of low usability.

On the other hand, in the ophthalmologic apparatus described in Patent Document 2, magnets (permanent magnets and electromagnets) respectively provided on the operating lever and the friction plate are used to control the magnitude of the frictional force generated between the operating lever and the friction plate. Since it can be controlled, it is possible to adjust the operating force amount of the operating lever. However, in this case, it is necessary to provide magnets to both the operating lever and the friction plate, and to provide a circuit for supplying current to the electromagnets. There is a problem that the manufacturing cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ophthalmologic apparatus capable of easily adjusting the amount of force required to operate an operating member with a simple improvement.

An ophthalmologic apparatus for achieving the object of the present invention is provided on the upper side of the base when the direction perpendicular to the horizontal direction is the vertical direction. The pedestal supported so as to be relatively movable in the horizontal direction, the ophthalmic device main body provided on the upper surface of the pedestal that is the surface on the upper side of the pedestal, and the ophthalmic device main body shifted in one horizontal direction from the ophthalmic device main body on the upper surface of the pedestal. an operation member that is provided at a position where the gantry is moved in the horizontal direction, receives a movement operation for moving the gantry in the horizontal direction, and transmits the force of the movement operation to the gantry to move the gantry in the horizontal direction; A projecting portion projecting toward the base from the bottom surface of the pedestal on the side opposite to the top surface, a contact surface provided on the base against which the projecting portion abuts, and at least one of the top surface of the pedestal and the bottom surface of the pedestal are parallel in one direction. A weight that is movably supported along a direction and a position adjustment mechanism that adjusts the position of the weight in one direction are provided.

According to this ophthalmologic apparatus, by adjusting the position of the weight along the parallel direction, the position of the center of gravity of the load applied to the gantry by the structure on the gantry can be moved along the parallel direction. The operation force amount of the operation member can be adjusted.

In the ophthalmologic apparatus according to another aspect of the present invention, the pedestal is supported so as to be relatively movable with respect to the base in a parallel direction and in a direction perpendicular to both the parallel direction and the vertical direction.

In an ophthalmologic device according to another aspect of the present invention, at least a portion of the protrusion that contacts the contact surface is formed into a curved shape.

In the ophthalmologic apparatus according to another aspect of the present invention, the weight is supported by a slide rail provided on at least one of the upper surface of the pedestal and the lower surface of the pedestal and parallel to the parallel direction.

In the ophthalmologic apparatus according to another aspect of the present invention, the position adjustment mechanism includes an operation reception member that receives a position adjustment operation of the weight, and a driving force that moves the weight in a parallel direction, by applying the position adjustment operation received by the operation reception member. and a conversion mechanism for converting. As a result, it is possible to adjust the operating force amount of the operating member with low power consumption.

An ophthalmologic apparatus according to another aspect of the present invention includes an operation input unit for inputting a position adjustment operation for the weight, and the position adjustment mechanism drives the weight in a parallel direction based on the position adjustment operation input to the operation input unit. It has a drive mechanism that

ADVANTAGE OF THE INVENTION This invention can adjust the operation force amount of an operation member easily by simple improvement.

1 is a side view of an ophthalmic device; FIG. It is a side enlarged view of an operation force amount adjustment mechanism. It is an upper surface enlarged view of an operation force amount adjustment mechanism. FIG. 10 is an explanatory diagram for explaining position adjustment of the weight in the Z-axis direction according to the rotating operation with respect to the rotating plate; FIG. 5 is an explanatory diagram for explaining the principle of adjustment of the amount of operation force of the operation lever by the operation force amount adjustment mechanism; It is the graph which showed an example of the relationship between La (mm) which shows the gravity center position of load, and reaction force b (N). FIG. 11 is an explanatory diagram for explaining a position adjustment mechanism of an operation force amount adjustment mechanism of the ophthalmologic apparatus of another embodiment 1; FIG. 8 is an explanatory diagram for explaining an operation force amount adjusting mechanism of an ophthalmologic apparatus according to another embodiment 2. FIG.

[Configuration of Ophthalmic Apparatus]
FIG. 1 is a side view of an ophthalmic device 10 of the present invention. This ophthalmologic apparatus 10 performs any one of observation of the subject's eye E, measurement of eye characteristics, and treatment such as laser surgery. Examples of such an ophthalmologic apparatus 10 include a fundus camera, OCT (optical coherence tomography), SLO (Scanning Laser Ophthalmoscope), ocular axial length meter, slit lamp, refractometer, keratometer, tonometer, specular microscope, and a combination machine thereof. and laser surgical devices.

In the figure, the X-axis direction is the lateral direction (interpupillary direction of the subject's eye E), the Y-axis direction is the vertical direction, and the Z-axis direction is the subject's eye E (subject's eye width direction). ) and the rearward direction away from the subject's eye E (also referred to as the working distance direction). Therefore, the Z-axis direction and the X-axis direction are included in the horizontal direction.

As shown in FIG. 1, the ophthalmologic apparatus 10 includes a base 12 (also referred to as a base), a face receiving section 14, a pedestal support mechanism 16, a pedestal 18, an ophthalmologic apparatus main body 20, an operation lever 22, and an operation lever 22. and a strength adjustment mechanism 24 .

On the base upper surface 12a, which is the upper surface of the base 12 on the upper side in the Y-axis direction, a face receiving portion 14 and a pedestal support are provided from the front side (eye E side) to the rear side (examiner side) in the Z-axis direction. A mechanism 16 and a slide plate 26 are provided.

The face receiving portion 14 is provided integrally with the base 12 . The face support section 14 has a chin support 14a and a forehead support 14b whose positions are adjustable in the Y-axis direction, and supports the subject's face.

The gantry support mechanism 16 is a coupling mechanism that couples the gantry 18 to the base 12 so as to be relatively movable in the X-axis direction and the Z-axis direction. The gantry support mechanism 16 includes a Z-axis guide 16a, a Z-axis base 16b, an X-axis guide 16c, and an X-axis base 16d.

A plurality of Z-axis guides 16a (or a single Z-axis guide 16a) is provided on the base upper surface 12a, and has a rail shape extending in the Z-axis direction. The Z-axis base 16b has a horizontal (including substantially horizontal, hereinafter the same) flat plate shape, and is slidably supported in the Z-axis direction by a Z-axis guide 16a.

A plurality of X-axis guides 16c (a single one is acceptable) are provided on the upper surface of the Z-axis base 16b, and have a rail shape extending in the X-axis direction. The X-axis base 16d has a horizontal flat plate shape and is supported by an X-axis guide 16c so as to be slidable in the X-axis direction. As a result, the X-axis base 16d is supported movably in the X-axis direction with respect to the base 12 by the X-axis guide 16c, and is supported relative to the base 12 by the Z-axis guides 16a, Z-axis base 16b, and X-axis guide 16c. supported so as to be movable in the Z-axis direction.

The X-axis base 16d is fixed to a pedestal lower surface 18b, which is the lower surface of the pedestal 18 on the downward side in the Y-axis direction. Thereby, the gantry 18 is supported by the gantry support mechanism 16 so as to be relatively movable in the X-axis direction and the Z-axis direction with respect to the base 12 . The configuration of the gantry support mechanism 16 is not particularly limited as long as the gantry 18 can be freely supported in the X-axis direction and the Z-axis direction with respect to the base 12, and may be changed as appropriate.

The slide plate 26 (also referred to as a friction plate) is formed in a flat plate shape in this embodiment. The slide plate 26 is provided at a position facing an operation lever 22 (sphere 22a), which will be described later, in the pedestal lower surface 18b. The upper surface of the slide plate 26 is a horizontal slide surface 26a (corresponding to the contact surface of the present invention) with which the spherical body 22a abuts (sliding). The sliding surface 26a is made of a durable material with a low coefficient of friction. Since the shape and material of the slide plate 26 (slide surface 26a) are well-known techniques, detailed description thereof will be omitted.

An ophthalmologic apparatus main body 20 is provided on a gantry upper surface 18a that is the upper surface of the gantry 18 on the upper side in the Y-axis direction. Further, an operation lever 22 is provided at a position shifted rearward in the Z-axis direction (corresponding to one horizontal direction in the present invention) from the ophthalmologic apparatus main body 20 on the pedestal upper surface 18a. Further, an operation force adjustment mechanism 24 is provided at a position shifted in the X-axis direction from the ophthalmologic apparatus main body 20 on the pedestal upper surface 18a.

Further, the gantry 18 is provided with a lever holding portion 28 that holds the operating lever 22 so as to be tiltable and rotatable at a position where the operating lever 22 is provided on the gantry upper surface 18a.

The ophthalmologic apparatus main body 20 has a function of performing at least one of observation, measurement, and treatment of the eye E to be examined. Further, inside the ophthalmologic apparatus main body 20, an optical system 30 (including an imaging device, various light sources, and various driving units) corresponding to the various functions described above and a control device 32 are provided. Further, a touch panel monitor 34 is provided on the surface of the ophthalmologic apparatus main body 20 on the rearward side in the Z-axis direction.

Since the optical system 30 is a well-known technology, a detailed description is omitted here.

The control device 32 is an arithmetic circuit composed of various processors, memories, etc., and controls each part of the ophthalmologic apparatus 10 in an integrated manner. Various processors include CPUs (Central Processing Units), GPUs (Graphics Processing Units), ASICs (Application Specific Integrated Circuits), programmable logic devices, and the like. Various functions of the control device 32 may be realized by one processor, or may be realized by a plurality of processors of the same type or different types.

For the touch panel monitor 34, for example, a known touch panel liquid crystal display device is used. The touch panel monitor 34 displays an observation image of the anterior segment of the eye to be examined E used for alignment of the ophthalmologic apparatus main body 20 and the like, measurement results of ocular characteristics of the eye to be examined E obtained by the ophthalmologic apparatus main body 20, and measurement results. An input screen or the like for performing the relevant operation (setting) is displayed.

The operation lever 22 is an operation member used by the examiner to move the ophthalmologic apparatus main body 20 in the XYZ axis directions. The operation lever 22 has a spherical body 22a and a rod-shaped (including substantially rod-shaped) operation receiving portion 22b.

The ball 22a is held by a lever holding portion 28 of the base 18 so as to be rotatable in any direction. A lower end portion of the spherical body 22a on the downward side in the Y-axis direction protrudes toward the base 12 from the pedestal lower surface 18b and abuts on the slide surface 26a of the slide plate 26 described above. Therefore, the lower end portion of the spherical body 22a functions as the projecting portion of the present invention. The lower end portion of the sphere 22a (that is, the portion in contact with the sliding surface 26a) is formed in a curved surface shape (spherical crown shape) that constitutes a part of the spherical surface. Therefore, the spherical body 22a can be rotated on the sliding surface 26a and moved in the horizontal direction (XZ-axis direction here).

It should be noted that a protrusion having a curved surface such as a sphere or a hemisphere may be separately provided on the lower side of the sphere 22a in the Y-axis direction, and the protrusion may be brought into contact with the sliding surface 26a (see Patent Document 1 above). reference).

The operation receiving portion 22b (also referred to as a grip portion or a grip portion) is arranged on the upper side in the Y-axis direction of the gantry upper surface 18a. The base end side of the operation receiving portion 22b is connected to the spherical body 22a. Further, the distal end side opposite to the proximal end side of the operation receiving portion 22b is held by the examiner. When the ophthalmologic apparatus 10 is an apparatus for measuring the eye characteristics of the subject's eye E, an operation button for starting measurement of the eye characteristics is provided on the top of the operation receiving section 22b on the distal end side.

The operating lever 22 is held by a lever holding portion 28 so as to be rotatable about its longitudinal axis, and is held so as to be tiltable in at least four directions, front, rear, left, and right.

The operation lever 22 is operated by the examiner to move the ophthalmologic apparatus main body 20 by rotating the ophthalmologic apparatus main body 20 in the Y-axis direction (vertical direction) and in the horizontal direction (X-axis and X-axis directions). horizontal movement operation and tilting operation for adjusting the position in the Z-axis direction). The horizontal movement operation is a push-pull operation in the horizontal direction. For example, the ophthalmologic apparatus main body 20 is moved to a position where an anterior segment image of the eye E to be examined can be acquired, and the ophthalmologic apparatus main body is switched to the left or right of the eye E to be examined. This is an operation for manually (non-electrically) performing rough movement (high-speed movement) of the ophthalmologic apparatus main body 20 as in the case of moving the ophthalmologic apparatus 20 or the like. On the other hand, the tilting operation is an operation for manually (non-electrically) finely moving (low-speed movement) the ophthalmologic apparatus main body 20, such as when performing precise alignment in the X-axis direction and Z-axis direction in a narrow range. is.

When the operation lever 22 is rotated, the ophthalmologic apparatus main body 20 is moved in the Y-axis direction (vertical direction) on the pedestal 18 by a Y-axis moving mechanism (either electric or non-electric) (not shown). Since the Y-axis movement mechanism is a well-known technology, detailed description thereof will be omitted.

When the operating lever 22 is operated to horizontally move in the X-axis direction or the Z-axis direction, the force of this horizontal movement operation is directly transmitted to the gantry 18 , thereby moving the gantry 18 and the gantry 18 through the gantry support mechanism 16 . The ophthalmologic apparatus main body 20 is integrally moved relative to the base 12 in the horizontal direction (X-axis direction or Z-axis direction). As a result, the ophthalmologic apparatus main body 20 can be coarsely moved in the direction corresponding to the horizontal movement operation input to the operation lever 22 . Further, in this case, since the ball 22a and the sliding surface 26a are in sliding contact, a frictional force is generated between them.

When the operating lever 22 is tilted in the X-axis direction or the Z-axis direction, the spherical body 22a rotates on the upper surface of the sliding surface 26a without idle due to the frictional force between the spherical body 22a and the sliding surface 26a. As a result, the force of the tilting operation is converted into a force for moving the gantry 18 in the horizontal direction (X-axis direction or Z-axis direction), and the converted force is transmitted to the gantry 18 . As a result, the gantry 18 and the ophthalmologic apparatus main body 20 are integrally moved horizontally relative to the base 12 via the gantry support mechanism 16 . As a result, the ophthalmologic apparatus main body 20 can be slightly moved in the direction corresponding to the tilting operation input to the operation lever 22 .

By controlling the magnitude of the frictional force generated between the ball 22a and the sliding surface 26a during the horizontal movement operation and the tilting operation of the operation lever 22, the operation force amount of the operation lever 22 during the horizontal movement operation and the tilting operation is controlled. can be adjusted. The magnitude of this frictional force, that is, the amount of operation force of the operation lever 22 is adjusted by an operation force amount adjustment mechanism 24, which will be described later.

[Operation force amount adjustment mechanism]
FIG. 2 is an enlarged side view of the operation force amount adjustment mechanism 24 viewed from the X-axis direction. FIG. 3 is an enlarged top view of the operation force amount adjustment mechanism 24 viewed from the Y-axis direction. As shown in FIGS. 2 and 3 and FIG. 1 described above, the operation force amount adjusting mechanism 24 adjusts the center of gravity of the load applied to the gantry 18 from the structures on the gantry 18 (the ophthalmologic apparatus main body 20 and the like). By moving the position in the Z-axis direction, the operation force amount of the operation lever 22 during the horizontal movement operation and the tilting operation is adjusted.

The operation force amount adjustment mechanism 24 accommodates one slide rail 40 (also referred to as a guide, a guide shaft, or a slide shaft), a pair of rail fixing portions 42, a weight 44, a position adjustment mechanism 46, and these parts. A storage case 48 is provided.

The slide rail 40 is spaced apart from the pedestal upper surface 18a and has a shape extending in a direction parallel to the Z-axis direction. A pair of rail fixing portions 42 are provided on the pedestal upper surface 18a and hold both end portions of the slide rail 40, respectively.

The weight 44 is, for example, a dummy weight, and has an insertion hole (not shown) parallel to the Z-axis direction through which the slide rail 40 is inserted. The weight 44 is movably supported in the Z-axis direction (corresponding to the parallel direction in the present invention) on the top surface 18a of the pedestal by means of the slide rail 40 inserted into the insertion hole. In this embodiment, the weight 44 is formed in a rectangular parallelepiped shape (block shape) extending in the Z-axis direction, but the shape is not particularly limited.

The position adjustment mechanism 46 moves the weight 44 in the Z-axis direction in response to the position adjustment operation of the weight 44 by the examiner. This position adjustment mechanism 46 includes a rack 50 , a gear 52 (gear), a support shaft 54 and a rotary plate 56 .

The rack 50 is attached to the side surface of the weight 44 in the X-axis direction and opposite to the ophthalmologic apparatus main body 20 side. The rack 50 has a shape extending in the Z-axis direction, and has a plurality of straight teeth on the side surface in the X-axis direction opposite to the weight 44 side.

The gear 52 is rotatably provided around a support shaft 54 parallel to the Y-axis direction (vertical direction) described later, and meshes with the rack 50 described above.

The support shaft 54 has a shape extending in the Y-axis direction (vertical direction). The upper end of the support shaft 54 on the upper side in the Y-axis direction is connected (fixed) to the gear 52, and the lower end of the support shaft 54 on the lower side in the Y-axis direction is a support hole (not shown) formed in the top surface 18a of the pedestal. holding hole) is rotatably supported. As a result, when the support shaft 54 is rotated around its central axis, the gear 52 is also rotated around this support shaft 54 integrally.

The rotating plate 56 corresponds to the operation receiving member of the present invention, and is a horizontal disk. The rotary plate 56 has an insertion hole (not shown) parallel to the Y-axis direction (vertical direction) through which the support shaft 54 is inserted. The rotary plate 56 is fixed to the support shaft 54 at a position between the gear 52 and the pedestal upper surface 18a with the support shaft 54 inserted through the insertion hole. Note that the shape of the rotating plate 56 is not limited to a disc shape, and may take any shape such as a polygonal shape.

A portion of the rotating plate 56 is exposed to the outside of the storage case 48 through an exposure hole 48 a formed in the storage case 48 . As a result, the examiner can perform the rotating operation of rotating the rotating plate 56 as the above-described position adjusting operation. By this rotating operation, the support shaft 54 and the gear 52 are rotated integrally with the rotary plate 56, and the rack 50 is moved in the Z-axis direction via the gear 52. As shown in FIG. As a result, the rotating operation of the rotating plate 56 is converted by the rack 50, the gear 52, and the support shaft 54 into driving force for moving the weight 44 in the Z-axis direction. Therefore, the rack 50, gear 52, and support shaft 54 correspond to the conversion mechanism of the present invention.

4A and 4B are explanatory diagrams for explaining the position adjustment of the weight 44 in the Z-axis direction according to the rotating operation on the rotating plate 56. FIG. As indicated by reference numeral 4A in FIG. 4, when the examiner rotates the rotating plate 56 in one direction, the support shaft 54 and the gear 52 are rotated integrally with the rotating plate 56, thereby rotating the gear 52 and the rack 50. , the weight 44 is moved forward along the slide rail 40 in the Z-axis direction. 4B, when the examiner rotates the rotating plate 56 in the opposite direction to the one direction, the rotating plate 56, the support shaft 54, the gear 52, and the rack 50 are rotated. , the weight 44 is moved rearward in the Z-axis direction along the slide rail 40 .

By thus rotating the rotating plate 56, the examiner can arbitrarily adjust the position of the weight 44 in the Z-axis direction. As a result, as will be described later, it is possible to adjust the operation force amount of the operation lever 22 .

5A and 5B are explanatory diagrams for explaining the principle of adjustment of the operation force amount of the operation lever 22 by the operation force amount adjustment mechanism 24. FIG. As shown in FIG. 5, since the mount 18 and the X-axis base 16d are integrated, the mount 18 has two points, a fulcrum A corresponding to the pair of X-axis guides 16c and a fulcrum B corresponding to the sliding surface 26a. supported by A load W is applied to the gantry 18 downward in the Y-axis direction by the structures on the gantry 18 (the ophthalmologic apparatus main body 20 and the operation force amount adjusting mechanism 24). As a result, reaction forces Ra and Rb directed upward in the Y-axis direction are applied to the fulcrums A and B of the pedestal 18, respectively.

The length in the Z-axis direction from the fulcrum A to the fulcrum B is L, the length in the Z-axis direction from the fulcrum A to the center of gravity of the load W is La, and the Z-axis from the center of gravity of the load W to the fulcrum B Assuming that the length in the direction is Lb, the sum of the moments about the fulcrum A is zero, so the well-known formula "W×La−(La+Lb)×Rb=0" holds. As a result, the reaction force Rb is represented by the formula Rb=(W×La)/L.

FIG. 6 is a graph showing an example of the relationship between La (mm) indicating the position of the center of gravity of the load W in the Z-axis direction with the fulcrum A as a reference and the reaction force b (N). As shown in FIG. 6 and FIG. 5 already described, moving the position of the center of gravity of the load W in the Z-axis direction, that is, increasing or decreasing La (mm), according to the change in the position of the weight 44 in the Z-axis direction. can be done. As a result, the reaction force Rb (N) can be increased or decreased in proportion to the increase or decrease of La (mm).

Here, the magnitude of the frictional force generated between the sphere 22a and the sliding surface 26a during the horizontal movement operation and the tilting operation with respect to the operation lever 22 is determined by the friction coefficient (static friction coefficient or dynamic friction coefficient) and the sliding surface 26a. It is represented by the product of the normal force [that is, Rb(N)] against the sphere 22a. Therefore, by increasing or decreasing the reaction force Rb(N), it is possible to increase or decrease the magnitude of the frictional force between the sphere 22a and the sliding surface 26a. As a result, it is possible to adjust the operating force amount of the operating lever 22 during the horizontal movement operation and the tilting operation.

It should be noted that the weight of the weight 44 and the movement range in the Z-axis direction suitable for adjusting the amount of operation force of the operation lever 22 differ for each model of the ophthalmologic apparatus 10 . Therefore, by conducting experiments or simulations in advance, the weight of the weight 44 and the movement range in the Z-axis direction (installation position and length of the slide rail 40 ) are set for each model of the ophthalmologic apparatus 10 .

[Effect of this embodiment]
As described above, in the present embodiment, by rotating the rotating plate 56 to adjust the position of the weight 44 in the Z-axis direction and moving the position of the center of gravity of the load W in the Z-axis direction, the operating force of the operating lever 22 is can be easily adjusted. Furthermore, in the present embodiment, it is only necessary to provide the operation force amount adjustment mechanism 24 on the top surface 18a of the pedestal. The operation force amount of the lever 22 can be adjusted. As a result, it is possible to easily adjust the operation force amount of the operation lever 22 with a simple improvement.

In addition, since the position adjustment mechanism 46 of the present embodiment can adjust the position of the weight 44 in the Z-axis direction by rotating the rotating plate 56 by the examiner, the electric power required for position adjustment of the weight 44 is zero. . On the other hand, in the ophthalmologic apparatus of Patent Document 2, it is necessary to continuously supply current to the electromagnet when adjusting the operation force amount of the operation lever 22, which causes a problem of increased power consumption of the ophthalmologic apparatus. In this configuration, the amount of force to operate the operating lever 22 can be adjusted without consuming electric power.

[Ophthalmic apparatus of another embodiment 1]
FIG. 7 is an explanatory diagram for explaining the position adjustment mechanism 46A of the operation force amount adjustment mechanism 24 of the ophthalmologic apparatus 10 of another embodiment 1. FIG. The position adjusting mechanism 46 of the above embodiment adjusts the position of the weight 44 in the Z-axis direction by rotating the rotary plate 56 by the examiner. 44 is adjusted in the Z-axis direction.

As shown in FIG. 7, the ophthalmologic apparatus 10 of another embodiment 1 is basically the same as the ophthalmologic apparatus 10 of the above embodiment, except that the position adjustment mechanism 46A includes an electric drive mechanism 60 instead of the rotating plate 56. They have the same configuration. For this reason, the same reference numerals are given to the same functions or configurations as those of the above-described embodiment, and the description thereof will be omitted.

The electric drive mechanism 60 corresponds to the drive mechanism of the present invention, and although not shown, it includes a motor and a drive transmission that transmits the rotation of the motor to the support shaft 54 and rotates the support shaft 54 and the gear 52 integrally. Mechanism and The driving of the electric drive mechanism 60 is controlled by the control device 32 already described. The control device 32 drives the electric drive mechanism 60 to rotate the support shaft 54 based on the position adjustment operation input to the touch panel monitor 34 (which corresponds to the operation input unit of the present invention), thereby rotating the gear. 52 and the rack 50 are used to adjust the position of the weight 44 in the Z-axis direction. As a result, the amount of force required to operate the operating lever 22 can be adjusted in the same manner as in the above-described embodiment.

As described above, even in the first embodiment, the operation force amount of the operation lever 22 can be adjusted simply by providing the operation force amount adjustment mechanism 24 on the pedestal upper surface 18a and connecting the electric drive mechanism 60 to the control device 32. Similar to the form, the adjustment of the operating force amount of the operating lever 22 can be easily performed with a simple improvement.

Instead of inputting the position adjustment operation to the touch panel monitor 34 , the position adjustment operation may be input to various operation input units such as operation buttons connected to the control device 32 .

[Ophthalmic device of another embodiment 2]
FIG. 8 is an explanatory diagram for explaining the operation force amount adjustment mechanism 24 of the ophthalmologic apparatus 10 of another embodiment 2. As shown in FIG. In the above embodiment, the operation force amount adjustment mechanism 24 is provided on the pedestal upper surface 18a, but as shown in FIG. 8, the operation force amount adjustment mechanism 24 may be provided on the pedestal lower surface 18b. Even in this case, by adjusting the position of the weight 44 in the Z-axis direction, the position of the center of gravity of the load W can be moved in the Z-axis direction to adjust the amount of force required to operate the operating lever 22. Therefore, the same effect as in the above embodiment can be obtained. can get.

It should be noted that the operation force amount adjusting mechanism 24 may be provided on both the pedestal upper surface 18a and the pedestal lower surface 18b.

[others]
In each of the above embodiments, the slide rail 40 and the position adjustment mechanisms 46 and 46A are used as examples of mechanisms for adjusting the position of the weight 44 in the Z-axis direction. The configuration is not particularly limited as long as it is a mechanism capable of adjusting the position.

In each of the above embodiments, the operation lever 22 is described as an example of the operation member of the present invention, but the shape of the operation member is not particularly limited as long as it contacts (sliding) with the slide surface 26a.

In the above embodiment, the sliding plate 26 having the sliding surface 26a is provided on the base upper surface 12a, but the base upper surface 12a itself may function as the sliding surface 26a (contact surface).

10... Ophthalmic device,
12 ... Base,
12a ... Base upper surface,
16 ... frame support mechanism,
18... Mounting frame,
18a ... Mounting frame upper surface,
18b ... the lower surface of the pedestal,
20 ... Ophthalmic device main body,
22 operation lever,
22a ... sphere,
24 ... operation force amount adjustment mechanism,
26 ... sliding plate,
26a ... sliding surface,
40 ... slide rail,
44 ... dummy weight,
46, 46A ... position adjustment mechanism,
56... Rotating plate,
60... Electric drive mechanism

Claims (6)

a base;
When the direction perpendicular to the horizontal direction is taken as the vertical direction, it is provided on the upper side of the vertical direction with respect to the base and is supported so as to be relatively movable in the horizontal direction with respect to the base. a trestle with
an ophthalmologic apparatus main body provided on an upper surface of the pedestal, which is the surface of the pedestal on the upward side;
provided on the upper surface of the gantry at a position shifted in one horizontal direction from the main body of the ophthalmologic apparatus, receives a moving operation for moving the gantry in the horizontal direction, and transmits the force of the moving operation to the gantry. an operation member for moving the mount in the horizontal direction with
a protruding portion provided on the operating member and protruding toward the base from the lower surface of the pedestal on the side opposite to the upper surface of the pedestal;
an abutment surface provided on the base and with which the projecting portion abuts;
a weight supported movably along a parallel direction parallel to the one direction on at least one of the upper surface of the pedestal and the lower surface of the pedestal;
a position adjustment mechanism that adjusts the position of the weight in the one direction;
An ophthalmic device comprising: 2. The ophthalmologic apparatus according to claim 1, wherein the mount is supported so as to be relatively movable with respect to the base in the parallel direction and in a direction perpendicular to both the parallel direction and the vertical direction. 3. The ophthalmologic apparatus according to claim 1, wherein at least a portion of said projecting portion that contacts said contact surface is formed into a curved shape. 4. The weight according to any one of claims 1 to 3, wherein the weight is a slide rail provided on at least one of the upper surface of the pedestal and the lower surface of the pedestal and is supported by a slide rail parallel to the parallel direction. ophthalmic equipment. The position adjustment mechanism includes an operation receiving member that receives a position adjustment operation of the weight; a conversion mechanism that converts the position adjustment operation received by the operation reception member into driving force for moving the weight in the parallel direction; The ophthalmic device according to any one of claims 1 to 4, comprising: An operation input unit for inputting a position adjustment operation of the weight,
The ophthalmologic apparatus according to any one of claims 1 to 4, wherein the position adjustment mechanism includes a drive mechanism that drives the weight in the parallel direction based on the position adjustment operation input to the operation input section.

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