CN211288387U

CN211288387U - Locking structure and DR equipment

Info

Publication number: CN211288387U
Application number: CN201922086716.9U
Authority: CN
Inventors: 徐益军
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-18
Anticipated expiration: 2029-11-27

Abstract

The utility model provides a locking structure and one kind have used the DR equipment of this locking structure, this locking structure is applicable to medical equipment, and the medical equipment that specially adapted DR flat board etc. possessed movable part and need often fix/remove, through locking structure with movable part and other part fixed connection. Compared with the existing self-locking or locking structure, the buckle unlocking action is changed into bayonet rotation from a conventional flicking mode, the size is more compact, the required space is very small, the size and the weight of the whole medical equipment are reduced, and the use is convenient.

Description

Locking structure and DR equipment

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a locking structure and DR equipment.

Background

In view of the great advantages of DR/CR photography (Digital Radiography, Digital flat panel X-ray imaging system; computerized Radiography), many medical institutions have replaced common fluoroscopy with DR/CR photography, and many hospitals even introduce mobile DR. Some DR equipment has been equipped with Portable Flat-Panel Detector (hereinafter referred to as DR Flat-Panel), and this brings the convenience for the photography of many bedside free positions, places the removal Flat-Panel on the equipment, for preventing that the Flat-Panel from falling or being taken away by the people, will lock automatically after putting the Flat-Panel on the equipment. The DR panel can be unlocked only through a designated mode (for example, a string of passwords is input to equipment, and then the electronic lock structure is unlocked automatically).

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a locking structure and a DR apparatus in order to solve the problem of the large size of the locking device in the current DR apparatus.

The above purpose is realized by the following technical scheme:

a locking structure, comprising: the locking mechanism comprises a driving part, an action part, an energy storage part, a locking part and a locking hole, wherein the action part comprises a first rack, the energy storage part comprises an energy storage piece, and the locking part comprises a locking end and a first gear which are fixedly connected; the first rack is meshed with the first gear; the action part is provided with a first position far away from the driving part and a second position close to the driving part, when the action part is at the first position, the locking part is inserted into the lock hole and is in a locking state, and when the action part is at the second position, the locking part is in an unlocking state and is separated from the lock hole; the driving part is used for enabling the action part to move from the first position to the second position and enabling the energy storage part to store energy; the energy storage piece releases energy, so that the action part moves from the second position to the first position.

In one embodiment, the locking device further comprises a self-locking portion, and when the action portion is in the first position, the self-locking portion limits the movement of the action portion, so that the locking portion maintains the locking state.

In one embodiment, the driving portion further includes a second rack fixedly connected to the first rack, the energy storage portion further includes a second gear engaged with the second rack, the second gear is connected to the self-locking portion, and the self-locking portion is configured to limit movement of the second gear.

In one embodiment, the self-locking part comprises a ratchet wheel and a pawl, the ratchet wheel is connected with the second gear and rotates synchronously with the second gear, and the pawl is clamped on the ratchet wheel to limit the rotation of the second gear.

In one embodiment, the locking portion further includes a pushing end, the actuating portion further includes a pushing surface, the pushing end abuts against the pushing surface, and the pushing surface drives the pushing end to enable the locking end to enter or separate from the locking hole.

In one embodiment, the pushing surface comprises a first plane, a second plane and a connecting inclined surface, the first plane and the second plane are parallel to the movement direction of the action part, and the connecting inclined surface connects the first plane and the second plane; when the pushing end abuts against the first plane, the locking end is positioned in the lock hole; when the pushing end is abutted against the second plane, the locking end is separated from the lock hole.

In one embodiment, the actuating portion further has a third position located between the first position and the second position, when the actuating portion moves from the second position to the first position and is located at the third position, the pushing end abuts against the first plane, and the first gear and the first rack are engaged.

In one embodiment, the pushing end surface is spherical, cambered or other continuous smooth surface.

In one embodiment, the driving portion comprises an electromagnet, and the action portion is provided with a magnetic part corresponding to the electromagnet.

In one embodiment, when the action part is in the first position, the projection of the locking end along the direction of the rotation axis of the action part is not overlapped with the projection of the locking hole along the direction.

A DR apparatus comprising a base, a DR panel and a locking structure as described in any of the above embodiments, wherein the locking structure is disposed on the base or DR panel and is configured to secure the DR panel to the base.

The utility model has the advantages that:

Drawings

Fig. 1 is a schematic structural view of a locking structure in a locked state according to an embodiment of the present invention;

FIG. 2 is a schematic view of the locking structure of FIG. 1 in another viewing direction;

FIG. 3 is a schematic view of the locking structure of FIG. 1 in an unlocked state after movement;

FIG. 4 is a schematic view of the locking structure of FIG. 3 in another viewing direction;

FIG. 5 is a schematic diagram of the components of the actuating portion of the locking structure of FIG. 1;

FIG. 6 is a partial schematic view of the energy storage portion of the locking structure of FIG. 1;

fig. 7 is a schematic view of components of a locking portion in the locking structure of fig. 1.

Wherein:

a locking structure 100; a drive section 110; an operation unit 120; a first rack gear 121; a second rack 122; a magnetic member 123; a push-up surface 124; a first plane 124 a; a second plane 124 b; the connecting slopes 124 c; an energy storage portion 130; a connecting portion 131; a second gear 132; a locking portion 140; a locking end 141; a pushing end 142; a first gear 143; a self-locking portion 150; a ratchet wheel 151; a pawl 152; a guide post 153; a lock hole 200.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The utility model provides a locking structure is applicable to medical equipment, and the medical equipment that specially adapted DR is dull and stereotyped etc. possesses movable part and needs often fixed/remove through locking structure with movable part and other part fixed connection. Compared with the existing self-locking or locking structure, the buckle unlocking action is changed into bayonet rotation from a conventional flicking mode, the size is more compact, the required space is very small, the size and the weight of the whole medical equipment are reduced, and the use is convenient.

Specifically, as shown in fig. 1 to 4, the locking structure 100 includes a driving portion 110, an actuating portion 120, an energy storage portion 130 and a locking portion 140, the driving portion 110 is used for driving the actuating portion 120 to actuate, and when the actuating portion 120 actuates, the locking portion 140 is driven to complete a locking/unlocking operation; meanwhile, the energy storage unit 130 stores energy through the operation unit 120 when the driving unit 110 operates, and releases energy to drive the operation unit 120 when the driving unit 110 stops operating.

In one embodiment, the action part 120 includes a first rack 121 and a second rack 122 connected as a whole, the energy storage part 130 includes an energy storage member, a connecting part 131 and a second gear 132, and the locking part 140 includes a locking end 141 and a first gear 143 connected as a whole; the first rack 121 is meshed with the first gear 143, and the second rack 122 is meshed with the second gear 132; the driving part 110 drives the action part 120 to move, the first rack 121 moves to drive the first gear 143 to rotate, and further drive the locking end 141 to rotate, and the locking end 141 rotates for a certain angle and has corresponding locking state and unlocking state before and after rotating for a certain angle; when the second rack 122 moves, the second gear 132 is driven to rotate, the connecting portion 131 rotates and compresses the energy storage member, and energy storage is completed. When the driving part 110 stops working, the energy storage member is no longer under pressure, and under the action of its own elasticity, the connecting part 131 drives the action part 120 to move in the opposite direction, and the action part 120 drives the locking end 141 of the locking part 140 to rotate in the opposite direction.

The action part 120 has a first position far away from the driving part 110 and a second position close to the driving part 110, when the action part is at the first position, the locking part 140 is inserted into the lock hole 200 and is in a locking state, and when the action part is at the second position, the locking part 140 is separated from the lock hole 200 and is in an unlocking state; the driving part 110 acts to move the action part 120 from the first position to the second position and to enable the energy storage part to store energy; the energy storage member releases energy so that the action portion 120 moves from the second position to the first position.

In general, in order to save energy and realize power-down protection, the unlocking operation is completed when the driving unit 110 operates, and the locking state is maintained by the action of the energy storage member of the energy storage unit 130 when the driving unit 110 does not operate. However, it is not excluded that the overdrive portion 110 is operated to complete the locking operation and the overdrive portion 110 is in the unlocking state when not operating to meet some special requirements.

In one embodiment, the locking structure 100 further includes a self-locking portion 150, and the self-locking portion 150 is configured to maintain the locking portion 140 in a locking state by limiting the movement of the actuating portion 120 after the locking portion completes locking. Specifically, the self-locking portion 150 includes a ratchet wheel 151 and a pawl 152, the ratchet wheel 151 is connected to the second gear 132 and rotates synchronously with the second gear 132, and the pawl 152 limits the rotation of the second gear 132 when being clamped to the ratchet wheel 151; the pawl 152 is driven by the guide post 153. When the locking portion 140 is in the locked state, the pawl 152 is engaged with the ratchet 151 to restrict the ratchet 151 from rotating clockwise, so that the energy accumulating portion 130 cannot move, the actuating portion 120 having an engaging relationship with the energy accumulating portion 130 cannot move, and finally the locking portion 140 remains stationary and in the locked state to prevent the locking structure 100 from being unlocked accidentally.

In one embodiment, the energy storage member is an elastic member, such as a spring, when the driving portion 110 drives the action portion 120 to act, one end of the spring is connected to the driving portion 120, and the other end of the spring is connected to the frame or the housing, and the action portion 120 moves to deform the spring, thereby completing energy storage. After the driving part 110 stops working, the spring releases energy to directly drive the action part 120 to move reversely.

In one embodiment, the energy storage element is an elastic element, such as a coil spring, when the driving part 110 drives the actuating part 120 to actuate, the second rack 122 drives the second gear 132 to rotate, one end of the coil spring is fixedly connected to a side surface of the second gear 132, the other end of the coil spring is connected to a rack or a housing, and the second gear 132 rotates to store energy to the coil spring. After the driving part 110 stops working, the coil spring releases energy to drive the second gear 132 to rotate reversely, and drives the action part 120 to move reversely.

In one embodiment, as shown in fig. 1, 5 and 7, the locking portion 140 further includes a pushing end 142, the actuating portion 120 further includes a pushing surface 124, the pushing end 142 abuts against the pushing surface 124, and the pushing surface 124 drives the pushing end 142 to move and the locking portion 140 to move when moving; the pushing surface 124 includes a first plane 124a, a second plane 124b, and a connecting slope 124c, the first plane 124a and the second plane 124b are parallel to the moving direction of the action part 120, and the connecting slope 124c connects the first plane 124a and the second plane 124 b. As the locking structure 100 is disposed inside the fixed housing/rack, for example, the first surface is closer to the exterior of the housing/base than the second surface, and when the pushing end 142 of the locking portion 140 abuts against the first surface, the locking end 141 protrudes from the housing/base and enters the locking hole 200 to engage with the mobile device, thereby completing the locking. When the movable device is unlocked, the actuating portion 120 moves, and the pushing end 142 moves from the first surface to the second surface along the connecting inclined surface 124c, and completes the rotation and translation of the locking end 141 during the movement, so that the locking end 141 is out of the locking hole 200 and is recovered inside the housing/base, or the locking end 141 is still outside the housing/base but is out of the locking hole 200 on the movable device. Further, the actuating portion 120 has a third position, and when the actuating portion is located at the third position, the first gear 143 is disengaged from or engaged with the first rack 121, and the pushing end 142 abuts against the first plane 124 a. When the actuating portion 120 moves from the first position to the second position, the locking end 142 only rotates without translating and is always located inside the locking hole 200. When the actuating portion 120 moves from the second position to the third position, the locking end 142 only translates and is disengaged from the locking hole 200, but does not rotate. The arrangement can prevent the interference between the translation and the rotation of the locking end 142, so that the locking end 142 cannot be disengaged from the locking hole 200.

The locking structure 100 without the pushing surface 124 is locked and unlocked only by the rotation of the locking end 141 of the locking portion 140, and the locking end 141 is not moved and only rotates, so that the locking end 141 protrudes out of the surface of the device all the time and is easily damaged, and the locking/unlocking process requires manual picking and placing after aligning the locking end 141 with the locking hole 200 (or other structures capable of forming locking with the locking end 141), which is inconvenient to operate. The locking structure 100 with the pushing surface 124 is arranged, so that the locking end 141 can be retracted into the device when the locking is not needed, and the locking structure 100 is prevented from being damaged due to the stress of the locking end 141; and when the lock/unlock is performed, the locking end 141 can be automatically taken out of the lock hole 200 or put into the lock hole 200, which is convenient for operation.

For the locking structure 100 provided with the pushing surface 124, the length of the first rack 121 in the moving direction of the acting part 120 is set to be equal to the length of the first surface in the moving direction, which is to decompose the rotation and the translation of the locking part 140 into two relatively independent movements, so as to avoid interference when the rotation and the translation are performed simultaneously. When the pushing end 142 abuts against the first surface, the first rack 121 is engaged with the first gear 143, and at this time, the locking portion 140 only rotates without translating; when the pushing end 142 contacts the connecting inclined surface 124c, the first rack 121 is disengaged from the first gear 143, the locking portion 140 is always abutted against the pushing inclined surface and moves to the second plane 124b under the action of self gravity or other external force, and the locking portion 140 only translates without rotating in the process. Further, the length of the first rack gear 121 may be set as required to control the rotation angle of the locking part 140, for example, the length of the first rack gear 121 may be set to rotate the first gear 143 by 90 °.

Further, with the locking structure 100 provided with the pushing surface 124, since sliding friction is always maintained between the pushing end 142 and the pushing surface 124, wear is easily generated. In order to prolong the service life of the pushing end 142 and the pushing surface 124, the pushing surface 124 is set to be a spherical surface, a cambered surface or other continuous smooth curved surface, so that the friction is reduced, and the service life is prolonged.

In one embodiment, as shown in fig. 7, the locking end 141 has a rectangular parallelepiped shape, and accordingly, the locking structure for locking the locking end 141 allows the locking end 141 to be removed only at a specific angle. For example, the locking structure is a rectangular hole close to the locking end 141, and the locking end 141 can be removed from the locking hole 200 only when the locking end 141 and the locking hole 200 are overlapped in the length direction.

In one embodiment, the driving part 110 is a steel wire, a pulley and a motor, and the pulley and the motor may be fixedly connected to the casing/base or other positions as long as they can keep relatively still with the casing/base; the motor can drive the pulley to rotate, the steel wire rope is wound on the pulley, one end of the steel wire rope is connected to the action part, the motor drives the pulley to rotate and drives the steel wire rope, the steel wire rope drives the action part to move, the traction force of the steel wire rope to the action part is greater than the resistance force of the energy storage part in the process, and the energy storage part is stressed and stores energy; after the motor stops rotating, the traction force disappears, and the energy storage part drives the action part to move reversely; it should be noted that, in order to avoid the energy storage portion being unable to drive the action portion to act after the motor stops rotating, the motor should be selected to have no self-locking function. Other common mechanical transmission mechanisms can also be applied to the utility model, such as a gear rack, a chain wheel, a belt wheel, and the like.

In one embodiment, as shown in fig. 1, the driving portion 110 is an electromagnet, and the electromagnet may be fixedly connected to the housing/base or other positions as long as it can keep relatively still with the housing/base; accordingly, the operating portion 120 is provided with a magnetic member 123. When the electromagnet is electrified, the magnetic piece 123 is attracted and the action part 120 moves towards the electromagnet, in the process, the magnetic force between the electromagnet and the magnetic piece 123 is larger than the resistance of the energy storage part 130, and the energy storage part 130 is stressed and stores energy; when the electromagnet is powered off, the magnetic force disappears, and the energy storage part 130 drives the action part 120 to move reversely. The electromagnet is used as the driving part 110, so that the physical mechanical transmission structure between the driving part 110 and the action part 120 is reduced, the weight and the mechanism complexity of the locking structure 100 can be reduced, and the space required by the locking structure 100 can be further reduced.

The utility model also provides a DR equipment, DR equipment is dull and stereotyped including the fixed base that sets up and mobilizable DR, and the handheld DR of user is dull and stereotyped to carry out the operation during the use, places the DR dull and stereotyped on the base after the operation is accomplished. The base or the DR flat plate is provided with the locking structure in the embodiment, and correspondingly, the other side, which is not provided with the locking structure, of the base or the DR flat plate is provided with structures such as a lock hole, a lock pin, a lock catch and the like which are matched with the locking structure.

Based on this, the utility model provides a locking structure and applied this locking structure's DR equipment possess following advantage at least:

1. the buckle unlocking action in the existing self-locking or locking structure is changed from a conventional spring-open mode into buckle rotation, the size is more compact, the required space is very small, the size and the weight of the whole medical equipment are reduced, and the use is convenient.

2. Utilize magnet and magnetic part to accomplish the action of action portion, compare with traditional mechanical transmission mechanism, simple structure, the part reduces, further reduces the weight and the required space of locking structure for whole medical equipment's size, weight reduce, facilitate the use.

The first embodiment is as follows:

the present embodiment provides a DR apparatus, as shown in fig. 1 and 5, including a fixedly disposed base and a movable DR flat plate, wherein a locking structure 100 is disposed in the base, and a locking hole 200 is disposed on the DR flat plate.

The locking structure includes: the driving part 110, the acting part 120, the energy storage part 130, the locking part 140 and the self-locking part 150.

The actuating portion 120 includes a first rack 121, a second rack 122, a magnetic member 123 and a pushing surface 124 connected as a whole, wherein the first rack 121 is disposed on the top of the actuating portion 120, the second rack 122 is disposed on the bottom of the actuating portion 120, the first rack 121 and the second rack 122 are perpendicular to each other, and the actuating portion 120 is slidably disposed on the housing/frame by means of a slide rail or other structure. The pushing surface 124 includes a first plane 124a, a second plane 124b, and a connecting slope 124c, the first plane 124a and the second plane 124b are parallel to the moving direction of the action part 120, and the connecting slope 124c connects the first plane 124a and the second plane 124 b.

The energy storage part comprises an elastic piece, a connecting part and a second gear, the second gear is meshed with the second rack, and the connecting part is used for connecting the energy storage part and the self-locking part.

The locking part 140 comprises a locking end 141, a first gear 143 and a pushing end 142 which are connected into a whole from top to bottom, wherein the locking end 141 is rectangular; correspondingly, a rectangular lock hole 200 is arranged on the DR panel. The drive section 110 is an electromagnet fixed to the housing/frame. The self-locking portion 150 includes a ratchet wheel 151 and a pawl 152, the ratchet wheel 151 is connected to the second gear and rotates in synchronization with the second gear, and the pawl 152 restricts rotation of the second gear when it is engaged with the ratchet wheel 151. Pawl 152 is driven by guide post 153 to engage and disengage ratchet wheel 151.

After the driving part 110, the acting part 120, the energy storage part 130 and the locking part 140 are assembled, the first rack 121 is meshed with the first gear 143, and the second rack 122 is meshed with the second gear 132;

when the lock is unlocked, the electromagnet is electrified and attracts the magnetic piece 123, attracts the magnetic piece 123 and enables the action part 120 to move towards the electromagnet, the first rack 121 moves to drive the first gear 143 to rotate, and further drives the locking end 141 to rotate, when the locking end 141 rotates to 90 degrees, the length direction of the locking end 141 is overlapped with the length direction of the lock hole 200, and the locking end 141 can be pulled out of the lock hole 200; the first rack 121 and the first gear 143 are disengaged, and the pushing end 142 moves from the first plane 124a to the connecting inclined plane 124c, and then the locking portion 140 starts to translate until the pushing end 142 moves from the connecting inclined plane 124c to the second plane 124b, and the locking end 141 is disengaged from the locking hole 200 on the DR panel; in the process, the magnetic force between the electromagnet and the magnetic part 123 is greater than the elastic force of the energy storage part, and the energy storage part 130 is stressed and stores energy: when the second rack 122 moves, the second gear 132 is driven to rotate and compress the energy storage member for energy storage.

When locking, the electromagnet is powered off and loses magnetism, under the action of the elastic force of the energy storage part, the action part 120 and the locking part 140 move in reverse directions, the locking end 141 firstly enters the locking hole 200, and then the locking end rotates to complete locking.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A locking structure, comprising: the locking mechanism comprises a driving part, an action part, an energy storage part, a locking part and a locking hole, wherein the action part comprises a first rack, the energy storage part comprises an energy storage piece, and the locking part comprises a locking end and a first gear which are fixedly connected; the first rack is meshed with the first gear;

the action part is provided with a first position far away from the driving part and a second position close to the driving part, when the action part is at the first position, the locking part is inserted into the lock hole and is in a locking state, and when the action part is at the second position, the locking part is in an unlocking state and is separated from the lock hole; the driving part is used for enabling the action part to move from the first position to the second position and enabling the energy storage part to store energy; the energy storage piece releases energy, so that the action part moves from the second position to the first position.

2. The lock structure according to claim 1, further comprising a self-locking portion that restricts movement of the action portion when the action portion is in the first position, so that the lock portion maintains the locked state.

3. The lock-up structure of claim 2, wherein the driving portion further comprises a second rack, the second rack is fixedly connected to the first rack, the energy storage portion further comprises a second gear, the second gear is engaged with the second rack, the second gear is connected to the self-lock portion, and the self-lock portion is configured to limit movement of the second gear.

4. The lock structure as claimed in claim 3, wherein the self-locking portion includes a ratchet wheel connected to the second gear and rotating in synchronization with the second gear, and a pawl that restricts rotation of the second gear when engaged with the ratchet wheel.

5. The locking structure of any one of claims 1 to 4, wherein the locking portion further comprises a pushing end, the actuating portion further comprises a pushing surface, the pushing end abuts against the pushing surface, and the pushing surface drives the pushing end to enable the locking end to enter or separate from the locking hole.

6. The lock structure according to claim 5, wherein the push surface includes a first plane, a second plane, and a connection slope, the first plane and the second plane are both parallel to the movement direction of the action portion, and the connection slope connects the first plane and the second plane; when the pushing end abuts against the first plane, the locking end is positioned in the lock hole; when the pushing end is abutted against the second plane, the locking end is separated from the lock hole.

7. The lock-out structure of claim 6, wherein the actuating portion further has a third position located between the first position and the second position, and when the actuating portion moves from the second position to the first position and is located at the third position, the pushing end abuts against the first plane, and the first gear and the first rack are engaged.

8. The locking structure of claim 5, wherein the pushing end surface is a spherical surface, a cambered surface or other continuous smooth curved surface.

9. The lock structure according to any one of claims 1 to 4, wherein the drive portion includes an electromagnet, and the operation portion is provided with a magnetic member corresponding to the electromagnet.

10. The lock structure according to any one of claims 1 to 4, wherein when the operation portion is in the first position, a partial projection of the lock end in the direction of the rotation axis thereof does not coincide with a projection of the lock hole in the direction.

11. A DR apparatus comprising a base, a DR panel and a locking structure as recited in any one of claims 1 to 10 provided to the base or DR panel for securing the DR panel to the base.