JP2001154299A - Radiation image photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the inadvertent opening of an opening/closing cap. SOLUTION: A casing 1 has an opening for insertion of a grid section 10. The casing 1 is provided with the opening/closing cap 3 for opening and closing the opening, an X-ray image receiving section for receiving the image of X-rays, an oscillating mechanism 7 for oscillating the grid section 10, a connecting mechanism 8 for connecting the grid section 10 and the oscillating mechanism 7 and a locking mechanism 9 for locking the opening/closing cap 3 and the grid section 10. The locking mechanism 9 has right and left locking pins 31 turned by turning of an operation member 26. These locking pins 31 turns around to the back of the opening/closing cap 3 when the grid section 10 is not loaded in the casing 1. The pins engage the spacing 20 of the grid section 10 when the grid section 10 is not loaded. The operation member 26 activates the locking mechanism 9 to lock or unlock the same and activates the connecting mechanism 8 to connect or disconnect the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of projecting radiation such as X-rays onto a subject, photographing the subject while reducing scattered rays generated by the subject by a grid portion, and attaching / detaching / replacing the grid portion. The present invention relates to a radiographic imaging device.

[0002]

2. Description of the Related Art For example, in an X-ray imaging apparatus for nondestructive inspection of a substance, an X-ray generator projects X-rays onto a subject, and transmits X-rays transmitted through the subject by an X-ray receiving unit. Receiving the image, processing the image signal from the X-ray receiving unit in the signal processing unit,
The X-ray image is displayed on the image display unit. The X-ray receiving unit is housed in a housing, and a grid for reducing scattered X-rays is detachably mounted on the housing. For this reason, the housing has an opening through which the grid is inserted, and an opening / closing lid for opening and closing the opening.

[0003] Further, there are cases where the grid moves during photographing and cases where it is fixed without moving. Further, it is possible to perform photographing using a grid having different characteristics such as grid density, grid ratio, and focal length depending on the part to be photographed, and photographing without using the grid.

[0004]

However, in such a conventional X-ray image photographing apparatus, since the opening / closing lid is easily or unnecessarily opened and closed, dust enters the housing through the opening and the X-ray image receiving section. And the image quality is degraded. In particular, if the opening / closing lid is carelessly opened during photographing, the amount of dust entering the housing increases, exposure is also adversely affected, and the image quality is further reduced.

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide a radiographic image capturing apparatus capable of preventing the opening / closing lid from being opened carelessly.

Another object of the present invention is to provide a radiographic imaging apparatus capable of simplifying various operations involved in attaching and detaching the grid portion and realizing easy attaching and detaching operations.

[0007]

According to the present invention, there is provided a radiographic apparatus comprising: a grid portion for reducing scattered radiation of radiation; a housing for accommodating the grid portion; And a locking means for locking the opening / closing lid to a substantially closed position when the grid portion is not loaded in the housing.

The radiation image capturing apparatus according to the present invention has a grid portion for reducing scattered radiation of radiation, a housing for accommodating the grid portion, and an opening / closing lid for opening and closing a grid insertion opening provided in the housing. Locking means for locking the open / close lid to a substantially closed position when the grid portion is not inserted into the housing, wherein the locking means also substantially defines the grid portion loaded in the housing. It is configured to be locked at the position.

Further, the radiographic image capturing apparatus according to the present invention has a grid portion for reducing scattered radiation of radiation, a driving means for reciprocatingly driving the grid of the grid portion, and a housing for accommodating the grid portion and the driving means. A body, an opening / closing lid that opens and closes a grid insertion opening provided in the housing, and a lock unit that locks the opening / closing lid at a substantially closed position when the grid portion is not inserted into the housing, The grid portion includes a swinging portion including the grid and a non-swinging portion, and the locking means also locks the non-swinging portion of the grid portion attached to the housing at a substantially fixed position. It is characterized by having such a configuration.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 is a plan view of an embodiment of an X-ray imaging apparatus without a grid portion, and FIG. 2 is a partially cutaway front view. Is formed.
The opening 2 has substantially the same size as the cross-sectional shape of the grid portion, and has a minimum size for attaching and detaching the grid portion. An opening / closing lid 3 for opening and closing the opening 2 is supported by the housing 1 so as to be rotatable between a substantially vertical position and a substantially horizontal position via a pair of left and right supports 4.
Are biased to the closed position by biasing means (not shown).

Inside the housing 1, a pair of left and right guide rails 5 for guiding the grid portion entering from the opening 2 to a predetermined position, an X-ray image receiving portion 6 for receiving X-rays, and swinging the grid portion. A swing mechanism 7, a connecting mechanism 8 for connecting / disconnecting the grid section and the swing mechanism 7 and a lock mechanism 9 for locking / unlocking the opening / closing lid 3 and the grid section are arranged. The swing mechanism 7 includes a drive motor, a gear, an encoder, a photo sensor, and the like (not shown).

FIG. 3 is a plan view of the grid portion 10, and FIG. 4 is a front view. The grid portion 10 includes a swing portion including a grid body 11 and a non-swing portion. That is, the grid body 11 is supported by the inner frame 12, and, for example, two rollers 13 are attached to left and right outer surfaces of the inner frame 12, respectively. The inner frame 12 is disposed inside the outer frame 14, and guide members 1 for guiding the rollers 13 are provided on left and right inner surfaces of the outer frame 14.
The sliding member 16 that slides on the inner surface of the guide rail 5 in the housing 1 is mounted on the left and right outer surfaces of the outer frame 14. The outer frame 14
The inner frame 12 is connected to the inner frame 12 by a tension coil spring 17, and the inner frame 12 is urged in the direction of arrow A to stop.

The inner frame 12 is provided with a block 18 connected to the connecting mechanism 8 and a flange 19 for closing the opening 2 of the housing 1 from the outside. The flange 19 is provided with a handle 19a. . Further, between the outer frame 14 and the flange 19, a pair of left and right gaps 20 with which a lock pin of the lock mechanism 9 described later is engaged are provided. The size of the gap 20 is made larger than the outer diameter of the lock pin, and the lock pin can be smoothly engaged with the gap 20.

On the surface of the flange 19, the grid body 1
Label 19 on which information on grid characteristics 1 is displayed
b is affixed. As shown in FIG.
, Grid density, grid ratio, focal length, and the like are displayed as grid characteristics, and the type of the grid unit 10 loaded in the housing 1 can be immediately recognized. FIG. 5 shows that, for example, the grid density is 34 lines / cm, the grid ratio is 8: 1, and the focal length is 100 cm.

FIG. 6 is a partially enlarged longitudinal sectional view of the connecting mechanism 8, and the connecting mechanism 8 includes a frame 21 fixed to the swing mechanism 7.
An arm 23 supported on the frame 21 so as to be rotatable about a fulcrum 22, and a claw 24 fixed to the arm 23
And the frame 21 for urging the arm 23 counterclockwise.
And a tension coil spring 25 connected between the arm 23 and
And an operation member 26 for driving the arm 23.

The operating member 26 can also operate the lock mechanism 9. The operating member 26 includes a rotating shaft 27 rotatably supported by the housing 1 and an inner end of the rotating shaft 27. A cam 28 that is provided and contacts the arm 23 and a knob 29 that is provided at the outer end of the rotating shaft 27 outside the housing 1 as shown in FIG. 1 are provided.

In the lock mechanism 9, as shown in FIGS. 1 and 2, a pair of left and right rotary plates 32 having lock pins 31 are rotatably mounted on the housing 1 below the opening 2 via a fulcrum shaft 33. Supported. The lock pin 31 is separated from the opening / closing lid 3 to enable smooth rotation.

The two rotating plates 32 are connected by a connecting plate 34, and the connecting plate 34 is supported by the housing 1 so as to be movable in the left-right direction. The connecting plate 34 is provided with a tension coil spring 35
And the connecting plate 34 is urged to the unlock position. The connecting plate 34 is urged to the locked position by the tension coil spring 35 when it moves to the left.

A pin 36 is fixed to the connecting plate 34 in the vicinity of the operation member 26, and the other end of a lever 37 having one end fixed to the rotating shaft 27 of the operation member 26 is engaged with the pin 36. The connecting plate 34 is configured to move in the left-right direction according to the rotation of the operation member 26. The housing 1 is provided with a sensor 38 which is located near the left end of the connecting plate 34 and detects the connecting plate 34, and a solenoid 39 provided with a pin 39 a abutting on the right end of the connecting plate 34. .

The timing at which the connecting mechanism 8 releases the grid portion 10 is set before the timing at which the lock mechanism 9 releases the grid portion 10, so that damage to the connecting mechanism 8 is prevented. For this reason, the shape of the cam 28 of the operation member 26 is such that the lock pin 31 of the lock mechanism 9 is
It is determined that the arm 23 of the connecting mechanism 8 is driven to rotate before leaving the gap 20 of. Then, the signal from the sensor 38 is input to the solenoid 39 and the solenoid 39
Are adapted to automatically restrict the movement of the connecting plate 34.

When the grid portion 10 is not loaded in the housing 1, the knob 29 of the operation member 26 is rotated clockwise to lock the open / close lid 3. At this time, as shown in FIGS. 7 and 8, the connecting plate 34 of the lock mechanism 9 moves to the left, the lock pin 31 rotates clockwise, turns around behind the opening / closing lid 3, and closes the opening / closing lid 3. Lock in position. At the same time, sensor 3
8 detects the connecting plate 34 and the pin 39a of the solenoid 39
Moves to the lock position and locks the right edge of the connecting plate 34.
Further, the cam 28 is turned by the turning operation of the operation member 26 as shown in FIG. 7, and the arm 23 of the connecting mechanism 8 is released. Thereby, the arm 23 is rotated counterclockwise by the urging force of the extension coil spring 25.

On the other hand, when loading the grid portion 10 into the housing 1, first, the solenoid 39 is operated by a switch described later to release the connecting plate 34 of the lock mechanism 9. Then, by turning the knob 29 of the operation member 26 counterclockwise, the lock mechanism 9 is returned to the state shown in FIG. 1, and the coupling mechanism 8 is returned to the state shown in FIG.

Next, the grid 10 is moved from the opening 2 to the housing 1.
When inserted inside, the outer frame 14 of the grid part 10 pushes the opening / closing lid 3 substantially horizontally, and the outer surface of the sliding member 16 of the grid part 10 slides along the inner surface of the guide rail 5. And when the grid part 10 is pushed into a predetermined position,
As shown in FIG. 9 and FIG.
9 abuts on the outer surface of the housing 1, closes the opening 2 instead of the open / close lid 3, and the gap 20 of the grid portion 10 is located inside the housing 1.

In this state, when the knob 29 of the operation member 26 is rotated clockwise again, the lock pin 31 of the lock mechanism 9 is rotated as described above, and the gap 2 of the grid portion 10 is rotated.
0, the locking mechanism 9 locks the grid portion 10 at a predetermined position. Further, the tension coil 35 urges the connecting plate 34 to the locked state, and the solenoid 39 regulates the movement of the connecting plate 34 as described above. Further, the coupling mechanism 8
11 returns to the state shown in FIG. 11, and the claw 24 of the connecting mechanism 8 engages with the block 18 of the grid portion 10. When the swing mechanism 7 operates, the driving force is transmitted to the grid section 10 via the connecting mechanism 8 and reciprocates the grid section 10 in the arrow direction.

When the grid unit 10 thus loaded is removed from the housing 1, the solenoid 39 is used as described above.
Is operated by a switch to connect the connecting plate 34 of the lock mechanism 9.
Is released, and the knob 29 of the operation member 26 is rotated counterclockwise. At this time, before the lock pin 31 of the lock mechanism 9 leaves the gap 20 of the grid portion 10,
Are separated from the block 18 of the grid section 10. When the grid section 10 is removed from the housing 1, the opening / closing lid 3 is opened.
Restores from a horizontal position to a vertical position. Finally, as described above, the knob 29 of the operation member 26 is rotated clockwise to hold the open / close lid 3 in the locked state.

In the embodiment, since the lock pin 31 is separated from the opening / closing lid 3, the lower portion of the opening / closing lid 3 may rattle even when the opening / closing lid 3 is urged by the urging means.
For this reason, the lock mechanism 9 locks the opening / closing lid 3 to the substantially closed position, but it goes without saying that the closer the lock pin 31 is to the opening / closing lid 3, the more the rattling of the opening / closing lid 3 can be suppressed.

Similarly, since the size of the gap 20 of the grid portion 10 is larger than the outer diameter of the lock pin 31,
Even if the lock pin 31 is engaged with the gap 20, the grid portion 10
It will rattle. Also in this case, the lock mechanism 9 locks the grid portion 10 at a substantially predetermined position.
It goes without saying that as the size of the gap 20 approaches the outer diameter of the lock pin 31, the rattling of the grid portion 10 can be suppressed.

FIG. 12 is a block diagram of a control system. The CPU 41 serving as a control means includes a switch 38 and a solenoid 39 which are operated by an operator to release the restriction of the lock mechanism 9 by the sensor 38 and the solenoid 39. , A rocking drive unit 44 including a drive motor, and a rocking mechanism 7 forming the rocking mechanism 7 and the rocking mechanism 7
Are connected to a photo sensor 45 for detecting that is located at the attachment / detachment preparation position a of the grid unit 10, a display unit 46 provided on one side surface or the like of the housing 1, and an X-ray generator 47.

FIG. 13 is a flowchart showing a control procedure of the CPU 41. First, in step 51, a command signal for setting the radiographic image capturing apparatus to an image capturing disabled state and causing the display unit 46 to display an image capturing disabled state and / or an unlocked state of the lock mechanism 9 is issued. Output. Next, in step 52, a standby signal is transmitted to the X-ray generator 47, and the process proceeds to step 53. It is assumed that the X-ray generator 47 is configured to be unable to generate X-rays by receiving the standby signal.

In step 53, it is determined whether or not the sensor 38 has detected that the lock mechanism 9 is at the lock position, that is, whether or not the sensor 38 has detected the connecting plate 34. Then, the process proceeds to step 54, and if not detected, step 53 is repeated.

In step 54, the solenoid driving unit 43
And outputs a command signal for moving the pin 39a to the connecting plate 34 side. In step 55, the radiographic image capturing apparatus is set to the image capturing enabled state, and the image capturing enabled state and / or the lock mechanism 9 is locked to the display unit 46, that is, the movement of the lock mechanism 9 is restricted by the pin 39a. A command signal for causing the display of is displayed.

In step 56, a ready signal is transmitted to the X-ray generator 47. The X-ray generator 47 is configured to be able to generate X-rays by receiving the ready signal. In step 57, switch 4
It is determined whether or not 2 is on, and if it is on, step 58
Then, if it is off, step 57 is repeated.

At step 58, it is determined that the swing mechanism 7 is at the mounting / removal preparation position a of the grid section 10 by the photo sensor 45.
It is determined whether or not is detected, and if it is detected, the process proceeds to step 59, and if not, the process proceeds to step 60.

In step 59, the solenoid driving unit 43
, A command signal for retracting the pin 39a from the connecting plate 34 is output. In step 60, the swing drive unit 4
In step S58, the swing mechanism 7 outputs a command signal to move the grid unit 10 to the attachment / detachment preparation position a.

In step 61, it is determined whether or not the sensor 38 detects that the lock mechanism 9 is at the lock position, that is, whether or not the sensor 38 has detected the connecting plate 34. Repeats step 61 again,
If not, the process proceeds to step 51.

The CPU 41 operates according to the above-mentioned flowchart after the operation of the radiation imaging apparatus is started. Steps 53 to 56 are mainly performed by the grid unit 1.
The control when the lock mechanism 9 is brought into the locked state after the attachment / detachment of 0 is shown. On the other hand, steps 57 to 61 and step 5
Steps 1 and 52 mainly show control when the lock mechanism 9 is unlocked in order to detach and attach the grid portion 10.

Next, a case where the grid section 10 is removed for photographing without using the grid section 10 or replacing the grid section 10 will be described.

(1) When the switch 42 is pressed, the swing mechanism 7
Is detected by the photo sensor 45 in the swing mechanism 7 as to whether or not is at the attachment / detachment preparation position a of the grid portion 10.

(2) If the swing mechanism 7 is not at the attachment / detachment preparation position a, the swing mechanism 7 is operated to move to the attachment / detachment preparation position a. In this state, the inner frame 1 of the grid section 10
2 is in a stable position independent of the acting force of the spring 17, so that no unnecessary force is applied to the connecting mechanism 8.

(3) Next, by operating the solenoid 39, the pin 39a is retracted to the unlock position to release the connecting plate 34. Conversely, when the swing mechanism 7 is not at the attachment / detachment preparation position a, the pin 39a is controlled so as not to retreat.

(4) By rotating the knob 29 counterclockwise,
The locking mechanism 9 is changed from the locked state to the unlocked state, and the fixing of the grid portion 10 is released.

(5) When the sensor 38 detects that the lock mechanism 9 is in the unlocked state, the photographing device enters the photographing impossible state, and the display unit 46 displays the photographing impossible and / or unlocked state. At the same time, a standby signal indicating that the imaging device has become unable to image is transmitted from the CPU 41 to the X-ray generation device 47 so that X-ray irradiation cannot be performed.

(6) Simultaneously, in conjunction with the operation of the lock mechanism 9, the connecting mechanism 8 shifts from the locked state to the unlocked state. At this time, as described in (2), the connecting mechanism 8
Since unnecessary force is not applied to the knob 29, the knob 29 can be easily operated.

(7) Holding the handle 19 a of the grid section 10, remove the grid section 10 from the opening 2 of the housing 1.

(8) Thus, the opening / closing lid 3 closes the opening 2 by the action of the urging means (not shown).

(9) When performing photographing without using the grid section 10, the knob 29 is rotated clockwise again to change the lock mechanism 9 from the unlocked state to the locked state, thereby restricting the opening and closing of the opening / closing lid 3. .

(10) When the sensor 38 detects that the lock mechanism 9 has been locked, the pin 39a of the solenoid 39 moves to the connecting plate 34 side, and the knob 29 cannot be operated. Only when this state is reached, the photographing device becomes in a photographable state, and the photographable and / or locked state is displayed on the display unit 46. At the same time, the CPU 41 transmits a ready signal indicating that the imaging device is ready for imaging from the CPU 41 to the X-ray generation device 47, thereby enabling X-ray irradiation.

(11) When loading the grid section 10, following (8), the following operations (27) and thereafter are performed.

The loading of the grid section 10 is as follows. Steps (21) to (26) are the same as steps (1) to (6) for removing the grid unit 10.

(21) When the switch 42 is pressed, it is determined whether or not the swing mechanism 7 is at the attachment / detachment preparation position a of the grid portion 10.
It is detected by the photo sensor 45 in the swing mechanism 7.

(22) If the swing mechanism 7 is not at the attachment / detachment preparation position a, the swing mechanism 7 is operated and moved to the attachment / detachment preparation position a.

(23) Next, by operating the solenoid 39, the pin 39a is retracted to the unlock position to release the connecting plate 34. Conversely, when the swing mechanism 7 is not at the attachment / detachment preparation position a, the pin 39a is controlled so as not to retreat.

(24) The knob 29 is rotated counterclockwise to change the lock mechanism 9 from the locked state to the unlocked state, and release the restriction on the opening / closing of the opening / closing lid 3.

(25) When the sensor 38 detects that the lock mechanism 9 is in the unlocked state, the photographing device enters the photographing impossible state, and the display unit 46 displays the photographing impossible and / or unlocked state. . At the same time, the CPU outputs a standby signal indicating that the photographing device has become incapable of photographing.
The X-ray is transmitted from the X-ray generator 41 to the X-ray generator 47 so that the X-ray cannot be emitted.

(26) Simultaneously, in conjunction with the operation of the lock mechanism 9, the connecting mechanism 8 shifts from the locked state to the unlocked state.

(27) Holding the handle 19 a of the grid section 10, the grid section 10 is loaded into the housing 1 through the opening 2.

(28) At this time, the opening / closing lid 3 is pushed by the grid portion 10 and remains open.

(29) By turning the knob 29 clockwise,
The grid mechanism 10 is locked to the housing 1 by changing the lock mechanism 9 from the unlocked state to the locked state.

(30) At this time, as described in (21) and (22), the position of the swing mechanism 7 is at the attachment / detachment preparation position a of the grid portion 10 shown in FIG.
Corresponds to the position where it is urged in the direction of arrow A and stopped, so that the knob 29 can be easily operated, and the coupling mechanism 8 changes from the unlocked state to the locked state in conjunction with the operation of the lock mechanism 9. Then, the swinging mechanism 7 and the inner frame 12 of the grid portion 10 are connected.

(31) When the sensor 38 detects that the lock mechanism 9 is locked, the pin 39a of the solenoid 39 moves to the connecting plate 34 side, and the knob 29 cannot be operated. In this state, the photographing device is in a photographable state similarly to (10), and the display unit 46 is capable of photographing and / or
Alternatively, a locked state is displayed, and a ready signal is transmitted from the CPU 41 to the X-ray generator 47 to enable X-ray irradiation.

The present invention is not limited to the above-described embodiment. For example, the effects of the present invention can be obtained in the following modified examples.

(A) The grid section 10 loaded inside the housing 1 does not necessarily have to move at the time of photographing, and there is no problem even with a fixed grid system. In this case, the outer frame 14 and the inner frame 12 may be integrated, and the swing mechanism 7 and the connecting mechanism 8 may be omitted.

(B) Lock / unlock switching of the lock mechanism 9 may be performed not by manual operation of the knob 29 but by driving force of an actuator such as a motor. In this case, the solenoid 39 becomes unnecessary.

(C) The urging means for urging the opening / closing lid 3 may not be provided.
There is no need to worry about being left in an open state, which is more effective.

(D) Cross section of grid section 10 and opening 2
May not be substantially equal to each other, but it is more effective to make the size as small as possible. Furthermore, there is an effect that the X-ray image receiving unit 6 inside the housing 1 cannot be inadvertently contacted.

(E) When the grid portion 10 is loaded into the housing 1, the flange 19 may be completely housed in the housing 1 without closing the opening 2, but in this case, Requires the opening and closing operation of the opening / closing lid 3 independently of the loading operation of the grid portion 10.

(F) When the grid portion 10 is loaded into the housing 1, the label 19b for displaying the information on the grid characteristics may not be attached to the flange 19, but if the information on the grid characteristics is displayed, the grid 19 may be displayed. Since the characteristics of the loaded grid can be determined without removing the unit 10, it is useful as information when replacing with a different grid unit.

(G) By receiving a signal indicating that the X-ray emission switch has been pressed from the X-ray generator 47, that is, moving the pin 39a of the solenoid 39 to the lock position at the start of imaging, the X-ray emission is performed. X-ray generator 47
, The pin 39a may be moved to the unlock position at the end of shooting. In this case, the operation of the knob 29 is not restricted during standby other than when photographing, so that it is not necessary to press a switch when attaching or detaching the grid unit 10, and operability is improved.

[0069]

As described above, the radiographic imaging apparatus according to the present invention is provided with the locking means for locking the opening / closing lid to the substantially closed position when the grid is not loaded in the housing. Can be prevented from being opened carelessly.
Therefore, the amount of dust entering the housing increases,
The exposure can be prevented from being adversely affected, and the image quality can be improved.

In addition, operations common to a plurality of lock mechanisms and coupling mechanisms accompanying attachment / detachment of the grid are standardized, so that the operations can be simplified and facilitated.

If the locking means is configured to also lock the grid loaded in the housing to a substantially fixed position, erroneous operation of the grid can be prevented. In addition, when a connecting means for connecting the grid and the driving means is provided, and the locking mechanism and the connecting means are configured to work together, the grid can be easily attached and detached. Further, if the unlocking operation of the locking means is completed after the non-connecting operation of the connecting means is completed, the connecting means will not be damaged. Further, if a regulating means for regulating the unlocking operation of the locking means is provided, the locked state can be reliably maintained.

[Brief description of the drawings]

FIG. 1 is a plan view in which a lock mechanism is in an unlocked state without loading a grid.

FIG. 2 is a partially cutaway front view.

FIG. 3 is a plan view of a grid section.

FIG. 4 is a front view.

FIG. 5 is a diagram of a label displaying grid characteristics.

FIG. 6 is a partially enlarged longitudinal sectional view of a coupling mechanism.

FIG. 7 is an operation explanatory view of the lock mechanism corresponding to FIG. 1;

FIG. 8 is an operation explanatory view of the lock mechanism corresponding to FIG. 2;

FIG. 9 is a plan view showing a state in which a grid portion is loaded and a lock mechanism is in a locked state.

FIG. 10 is a front view.

FIG. 11 is an operation explanatory view of the coupling mechanism corresponding to FIG. 6;

FIG. 12 is a block diagram of a control system.

FIG. 13 is a flowchart of a control procedure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Opening 3 Opening / closing lid 7 Swinging mechanism 8 Connecting mechanism 9 Lock mechanism 10 Grid part 11 Grid body 19 Flange 19a Handle 19b Label 26 Operation member 27 Rotating axis 28 Cam 29 Knob 31 Lock pin 38 Sensor 39 Solenoid 41 CPU 42 switch 43 solenoid control unit 44 swing drive unit 45 photo sensor 46 display unit 47 X-ray generator

Claims (12)

[Claims] 1. A grid part for reducing scattered radiation of radiation, a housing for accommodating the grid part, an opening / closing lid for opening and closing a grid insertion opening provided in the housing, and the grid part being attached to the housing. A locking means for locking the opening / closing lid to a substantially closed position when not loaded. 2. A grid section for reducing scattered radiation of radiation, a housing for accommodating the grid section, an opening / closing lid for opening and closing a grid insertion opening provided in the housing, and the grid section being attached to the housing. Lock means for locking the open / close lid to a substantially closed position when not inserted, wherein the lock means is configured to also lock the grid portion loaded in the housing to a substantially fixed position. A radiographic imaging device characterized by the following. 3. A grid section for reducing scattered radiation of radiation, driving means for reciprocatingly driving the grid of the grid section, a housing for accommodating the grid section and the driving means,
An opening / closing lid that opens and closes a grid insertion opening provided in the housing; and a lock unit that locks the opening / closing lid at a substantially closed position when the grid portion is not inserted into the housing. Comprises a swinging portion including the grid and a non-swinging portion, and wherein the locking means also locks the non-swinging portion of the grid portion inserted into the housing at a substantially fixed position. A radiographic image capturing apparatus characterized in that: 4. The radiation according to claim 3, further comprising connecting means for connecting the swinging part of the grid part and the driving means, wherein the locking means and the connecting means are interlocked. Image capturing device. 5. The radiation image capturing apparatus according to claim 4, wherein the unlocking operation of the locking means is completed after the unconnecting operation of the connecting means is completed. 6. The radiographic imaging apparatus according to claim 1, further comprising a regulating unit that regulates an unlocking operation of the manual locking unit when the locking unit is a manual locking unit. apparatus. 7. The opening / closing control of the opening / closing lid by the locking means or the restricting means is performed when a photographing is possible, when photographing is started, or when the reciprocating drive position of the driving means is not at the mounting / removing preparation position of the grid portion. The radiation image capturing apparatus according to any one of claims 1 to 3, wherein the radiation image capturing apparatus is configured to perform the operation. 8. The release of the opening / closing regulation of the opening / closing lid by the locking means or the regulation means is performed at the end of photographing or when the reciprocating drive position of the driving means is at the attachment / detachment preparation position of the grid portion. The radiation image capturing apparatus according to any one of claims 1 to 3, wherein: 9. The radiation image capturing apparatus according to claim 1, further comprising an urging means for urging the opening / closing lid in a direction to close the grid insertion opening. 10. The grid portion has an exposed portion that is exposed to the outside of the housing when the grid portion is mounted on the housing,
The shape of the grid insertion opening is substantially the same as the cross-sectional shape of the grid portion inserted from the grid insertion opening, and the exposed portion is configured to cover the grid insertion opening. 4. The radiation image capturing apparatus according to 1, 2, or 3. 11. The radiographic imaging apparatus according to claim 10, wherein display means for displaying information on grid characteristics of the grid part is provided on the exposure part. 12. The image forming apparatus according to claim 1, further comprising detecting means for detecting a locked or unlocked state of said locking means, wherein said detecting means detects a locked state of said locking means so as to enable photographing. Item 1 or 2 or 3
A radiographic image capturing apparatus according to claim 1.