CN110185326B - Intelligent robot for unlocking offices of government-enterprise units - Google Patents
Intelligent robot for unlocking offices of government-enterprise units Download PDFInfo
- Publication number
- CN110185326B CN110185326B CN201910399710.9A CN201910399710A CN110185326B CN 110185326 B CN110185326 B CN 110185326B CN 201910399710 A CN201910399710 A CN 201910399710A CN 110185326 B CN110185326 B CN 110185326B
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- cavity
- wall
- push block
- fixedly connected
- block
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B45/00—Alarm locks
- E05B45/06—Electric alarm locks
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/52—Other locks for chests, boxes, trunks, baskets, travelling bags, or the like
- E05B65/5207—Other locks for chests, boxes, trunks, baskets, travelling bags, or the like characterised by bolt movement
- E05B65/5215—Other locks for chests, boxes, trunks, baskets, travelling bags, or the like characterised by bolt movement sliding
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
Abstract
The invention discloses an intelligent robot for unlocking an office of a government-enterprise unit, which comprises a device main body, wherein a communicating cavity is arranged in the device main body in a front-back through mode, two detection devices are symmetrically arranged in the inner walls of the left side and the right side of the communicating cavity, a power device is arranged in the inner wall of the lower side of the communicating cavity, an opening and closing device is arranged in the communicating cavity, the power device can drive the opening and closing device, and the opening and closing device can close the communicating cavity.
Description
Technical Field
The invention relates to the field of security, in particular to an intelligent robot for unlocking offices of government and enterprise units.
Background
Often there will be some important documents etc. to protect in the government and enterprise office, even need put the safe in, when will take out, in order to ensure the safety and the implementation responsibility of file, it is really necessary to design a government and enterprise office that must be opened by two people's simultaneous operation and unblank intelligent robot, this device must be opened the revolving door by two people's simultaneous operation, when operating personnel only alone or when the extraneous personnel, the device can send out the police dispatch newspaper automatically and lock the device dead, the security of important document has been ensured, prevent to be stolen, this device not only is applicable to the safe simultaneously, still can install on other only independent open-ended seal boxs.
Disclosure of Invention
The technical problem is as follows:
many confidential documents of the government and enterprise units can be stored in the safe box, and the general safe box can be prevented from being stolen by external personnel, but can be easily stolen by internal personnel of the unit.
In order to solve the problems, the embodiment designs an intelligent robot for unlocking offices of government and enterprise units, which comprises a device main body, wherein a communication cavity is arranged in the device main body in a front-back through manner, two detection devices are symmetrically arranged in the inner walls of the left side and the right side of the communication cavity, a power device is arranged in the inner wall of the lower side of the communication cavity, an opening and closing device is arranged in the communication cavity and can drive the opening and closing device, the opening and closing device can close the communication cavity, for convenience of description, if not specified, the detection devices mentioned later refer to the detection devices in the inner wall of the right side of the communication cavity, each detection device comprises a push block cavity which is arranged in the inner wall of the right side of the communication cavity and has a rightward opening, a push block is slidably arranged in the push block cavity, and a detection plate is fixedly arranged in the inner surface of the right end of the push block, the inner wall of the left side of the push block cavity is internally provided with a conduction rod cavity which is internally provided with a conduction rod in a sliding way, the right end of the conduction rod is fixedly connected with the push block, the detection board is electrically connected with the conduction rod, and the inner wall of the left side of the conduction rod cavity is internally and fixedly provided with an induction block.
But preferably, the symmetry be equipped with the transverse groove in the inner wall of both sides about the ejector pad chamber, the slidable is equipped with horizontal slider in the transverse groove, horizontal slider is close to central one end face and has set firmly driven rack, the transverse groove is close to central one side inner wall and is equipped with the gear chamber of intercommunication in, the gear chamber be close to central one side inner wall communicate in the ejector pad chamber, the rotatable gear shaft that is equipped with of gear chamber, the gear has linked firmly the gear on the gear shaft, the gear can mesh in driven rack, both ends face internal symmetry just has set firmly the initiative rack about the ejector pad, the initiative rack can mesh in the gear.
But preferably, the intercommunication is equipped with vertical groove in the inner wall of transverse groove right side, vertical groove be close to center one side inner wall communicate in the ejector pad chamber, slidable is equipped with vertical slider in the vertical inslot, vertical slider be close to center one end support in the ejector pad, the intercommunication is equipped with the slider chamber in the inner wall of vertical groove right side, slider intracavity slidable is equipped with link block, link block link firmly in vertical slider, the slider chamber is close to center one side inner wall and has set firmly the electromagnetic block, the draw-in groove that is equipped with the opening back of the body mutually of longitudinal symmetry in the ejector pad.
Preferably, a reset spring is fixedly connected between the left end of the push block and the inner wall on the left side of the push block cavity, and gear torsion springs are fixedly connected between the front end and the rear end of the gear and the front inner wall and the rear inner wall of the gear cavity.
Beneficially, power device is including locating the hold-in range chamber in the intercommunication chamber downside inner wall, the rotatable left band pulley that is equipped with of hold-in range intracavity, left side band pulley internal link firmly left screw rod, hold-in range chamber downside inner wall internal set has the motor, left side screw rod power connect in the motor, left side screw rod upper end extends into the intercommunication intracavity, the rotatable right band pulley that is equipped with in left side band pulley right side, left side band pulley with be connected with the hold-in range between the right band pulley, right side band pulley internal link firmly right screw rod, right screw rod upper end extends into the intercommunication intracavity.
Beneficially, switching device includes symmetry and the locating that is linked together the torsional spring chamber in the both sides inner wall about the intercommunication chamber, the torsional spring chamber is kept away from and is connected with the door-hinge between the center one side inner wall, link firmly the revolving door on the door-hinge, both ends about the revolving door with the torsional spring chamber is kept away from and is linked firmly the door-hinge torsional spring between the center one side inner wall, for the guarantee security, four terminal surfaces support in the same time about the revolving door about from the top down in intercommunication intracavity wall.
But preferably, the swing door rear end rigid coupling has the locking piece, bilateral symmetry's lockhole that link up from top to bottom is equipped with in the locking piece, the interior longitudinal symmetry of lockhole is equipped with the slidable locking lever, bilateral symmetry's about the locking piece are equipped with slidable splint, two of upside the locking lever links firmly in the upside splint, two of downside the locking lever links firmly in the downside splint, left side screw rod with right side screw rod runs through in two splint and rather than threaded connection.
Preferably, the thread connection directions of the clamping plates on the upper side and the lower side are opposite to those of the left screw rod and the right screw rod.
Beneficially, the communicating chamber upper side inner wall is internally and fixedly provided with a processor, the device main body upper end is fixedly connected with a prompting lamp and a loudspeaker, the prompting lamp and the loudspeaker are electrically connected with the processor, the induction blocks on two sides are electrically connected with the processor through cables, and the motor is electrically connected with the processor.
The invention has the beneficial effects that: the device has a simple structure, is convenient to operate, can open the revolving door only by two persons operating at the same time, can automatically send out an alarm and lock the device when only one person or a foreign person exists in the operator, ensures the safety of important documents and prevents the documents from being stolen, and is suitable for a safe box and also can be arranged on other sealed boxes with independent openings.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
Fig. 1 is a schematic internal structure diagram of an intelligent robot for unlocking an office of a government and enterprise unit according to the invention;
FIG. 2 is an enlarged schematic view of "A" in FIG. 1;
FIG. 3 is an enlarged schematic view of "B" in FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;
FIG. 5 is an enlarged schematic view of "D" in FIG. 2;
FIG. 6 is a schematic view of the structure in the direction "E-E" in FIG. 4;
FIG. 7 is a schematic view of the structure in the direction "F-F" in FIG. 5.
Detailed Description
The invention will now be described in detail with reference to fig. 1-7, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to an intelligent robot for unlocking an office of a government-enterprise unit, which is mainly applied to the storage of confidential documents of the government-enterprise unit, and the invention is further explained by combining the attached drawings of the invention
The invention relates to an intelligent robot for unlocking an office of a government-enterprise unit, which comprises a device main body 11, wherein a communication cavity 35 is arranged in the device main body 11 in a front-back through manner, two detection devices 100 are symmetrically arranged in the inner walls of the left side and the right side of the communication cavity 35, a power device 101 is arranged in the inner wall of the lower side of the communication cavity 35, an opening-closing device 102 is arranged in the communication cavity 35, the power device 101 can drive the opening-closing device 102, the opening-closing device 102 can close the communication cavity 35, for the convenience of description, if the detection devices 100 mentioned later refer to the detection devices 100 in the inner wall of the right side of the communication cavity 35, the detection devices 100 comprise a push block cavity 31 which is arranged in the inner wall of the right side of the communication cavity 35 and is opened towards the right, a push block 29 is arranged in the push block cavity 31 in a sliding manner, and a detection plate 30, the inner wall of the left side of the push block cavity 31 is internally provided with a conducting rod cavity 26 in a communicated manner, a conducting rod 27 is slidably arranged in the conducting rod cavity 26, the right end of the conducting rod 27 is fixedly connected with the push block 29, the detection plate 30 is electrically connected with the conducting rod 27, and the inner wall of the left side of the conducting rod cavity 26 is fixedly provided with an induction block 25.
Beneficially, the inner walls of the upper side and the lower side of the push block cavity 31 are symmetrically provided with transverse grooves 40, the transverse grooves 40 are slidably provided with transverse sliding blocks 38, one end face, close to the center, of each transverse sliding block 38 is internally and fixedly provided with a driven rack 39, the inner wall, close to the center, of each transverse groove 40 is internally and fixedly provided with a gear cavity 47, the inner wall, close to the center, of each gear cavity 47 is communicated with the push block cavity 31, a gear shaft 49 is rotatably arranged in each gear cavity 47, the gear shaft 49 is fixedly connected with a gear 48, the gear 48 can be meshed with the driven rack 39, the upper end face and the lower end face of the push block 29 are symmetrically and fixedly provided with driving racks 46, and the driving racks 46 can be meshed.
Beneficially, the inner wall of the right side of the transverse groove 40 is internally provided with a vertical groove 41 in a communicating manner, the inner wall of the vertical groove 41 close to one side of the center is communicated with the push block cavity 31, a vertical sliding block 45 is slidably arranged in the vertical groove 41, one end of the vertical sliding block 45 close to the center abuts against the push block 29, the inner wall of the right side of the vertical groove 41 is internally provided with a sliding block cavity 43 in a communicating manner, a connecting sliding block 42 is slidably arranged in the sliding block cavity 43, the connecting sliding block 42 is fixedly connected to the vertical sliding block 45, an electromagnetic block 44 is fixedly arranged in the inner wall of the side of the slide block cavity 43 close to one side of the center, and the push block 29 is internally provided with clamping grooves 32.
Beneficially, a return spring 28 is fixedly connected between the left end of the pushing block 29 and the inner wall of the left side of the pushing block cavity 31, and a gear torsion spring 52 is fixedly connected between the front end and the rear end of the gear 48 and the front inner wall and the rear inner wall of the gear cavity 47.
According to the embodiment, it is right from now on power device 101 explains in detail, power device 101 is including locating synchronous belt chamber 18 in the intercommunication chamber 35 downside inner wall, rotatable left band pulley 14 that is equipped with in the synchronous belt chamber 18, left side band pulley 14 has linked firmly left screw rod 12, 18 downside inner walls of synchronous belt chamber have set firmly motor 13, left side screw rod 12 power connect in motor 13, left side screw rod 12 upper end extends into in the intercommunication chamber 35, the rotatable right band pulley 17 that is equipped with in the left side band pulley 14 right side, left side band pulley 14 with be connected with hold-in range 15 between the right band pulley 17, right side band pulley 17 has linked firmly right screw rod 16 in the right band pulley, the upper end of right screw rod 16 extends into in the intercommunication chamber 35.
According to the embodiment, it is right below switching device 102 explains in detail, switching device 102 includes symmetry and the locating that is linked together torsional spring chamber 34 in the inner wall of both sides about the intercommunication chamber 35, torsional spring chamber 34 keeps away from and rotates between center one side inner wall and be connected with door-hinge 20, door-hinge 19 has been linked firmly on the door-hinge 20, both ends about the revolving door 19 with torsional spring chamber 34 keeps away from and has linked firmly door-hinge torsional spring 33 between center one side inner wall, for the guarantee security, four terminal surfaces support in the same time about the revolving door 19 about from the top the bottom the intercommunication chamber 35 inner wall.
Beneficially, the rear end of revolving door 19 is fixedly connected with locking piece 37, bilateral symmetry is equipped with lockhole 50 that link up from top to bottom in the locking piece 37, bilateral symmetry is equipped with slidable locking lever 51 in the lockhole 50, bilateral symmetry is equipped with slidable splint 36 about the locking piece 37, two of upside locking lever 51 links firmly in the upside splint 36, two of downside locking lever 51 links firmly in the downside splint 36, left side screw 12 with right side screw 16 runs through in two splint 36 and rather than threaded connection.
Advantageously, the clamping plates 36 on the upper and lower sides are opposite to the thread connection direction of the left screw 12 and the right screw 16.
Beneficially, a processor 23 is fixedly arranged in the inner wall of the upper side of the communicating cavity 35, the upper end of the device main body 11 is fixedly connected with a prompting lamp 22 and a loudspeaker 24, the prompting lamp 22 and the loudspeaker 24 are electrically connected to the processor 23, the induction blocks 25 on the two sides are electrically connected to the processor 23 through cables 21, and the motor 13 is electrically connected to the processor 23.
The use steps herein are described in detail below with reference to fig. 1-7:
when the fingerprint detection device is used, the processor 23 collects fingerprint information of personnel capable of opening the device, two operators simultaneously press fingers on the detection plate 30 and push the push block 29 to slide, and then the gear and rack transmission drives the transverse slide block 38 to slide, and further pushes the vertical slide block 45 to slide, and further drives the connecting slide block 42 to slide into the clamping groove 32 and clamp the push block 29, and simultaneously drives the conduction rod 27 to slide and contact with the induction block 25, the conduction rod 27 transmits the fingerprint information to the induction block 25, and transmits the information to the processor 23 through the cable 21, when only one operator or an external person exists, the processor 23 can control the prompting lamp 22 to emit an alarm lamp and control the loudspeaker 24 to emit an alarm, and simultaneously forbids the motor 13 to start, at the moment, the vertical slide block 45 clamps the push block 29 to prevent the push block from automatically ejecting, when the processor 23 receives normal information, the electromagnetic block 44 conducts electricity, and further repels the connecting slide block 42, and then drive vertical slider 45 through connecting slider 42 and slide and break away from draw-in groove 32, push block 29 auto-eject under the spring action of reset spring 28 this moment, start motor 13 simultaneously, drive left screw rod 12 and right screw rod 16 through the belt drive and rotate, and then drive splint 36 and keep away from each other and slide, and then drive locking lever 51 and break away from lockhole 50, revolving door 19 rotates and opens the intercommunication chamber 35 under the spring action of door-hinge torsional spring 33.
The beneficial effects are that: the device has a simple structure, is convenient to operate, can open the revolving door only by two persons operating at the same time, can automatically send out an alarm and lock the device when only one person or a foreign person exists in the operator, ensures the safety of important documents and prevents the documents from being stolen, and is suitable for a safe box and also can be arranged on other sealed boxes with independent openings.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.
Claims (1)
1. An intelligent robot for unlocking offices of government and enterprise units comprises a device main body;
a communicating cavity is formed in the device main body in a front-back through mode, two detection devices are symmetrically arranged in the inner walls of the left side and the right side of the communicating cavity, a power device is arranged in the inner wall of the lower side of the communicating cavity, an opening and closing device is arranged in the communicating cavity and can drive the opening and closing device, and the communicating cavity can be closed by the opening and closing device;
for convenience of description, the detection means mentioned hereinafter refers to the detection means in the inner wall of the right side of the communication chamber, unless otherwise specified;
the detection device comprises a push block cavity which is arranged in the inner wall of the right side of the communication cavity and has a right opening, a push block is arranged in the push block cavity in a sliding manner, a detection plate is fixedly arranged in the right end face of the push block, a conduction rod cavity is arranged in the inner wall of the left side of the push block cavity in a communicated manner, a conduction rod is arranged in the conduction rod cavity in a sliding manner, the right end of the conduction rod is fixedly connected with the push block, the detection plate is electrically connected with the conduction rod, and an induction block is fixedly arranged in the inner wall of the left side of;
the inner walls of the upper side and the lower side of the push block cavity are symmetrically provided with transverse grooves, transverse sliding blocks are slidably arranged in the transverse grooves, one end face, close to the center, of each transverse sliding block is internally and fixedly provided with a driven rack, the inner walls of the transverse grooves, close to the center, of one side of the transverse grooves are internally and fixedly communicated with a gear cavity, the inner walls of the gear cavities, close to the center, of one side of the gear cavity are communicated with the push block cavity, a gear shaft is rotatably arranged in the gear cavity, gears are fixedly connected to the gear shaft and can be meshed with the driven racks, the inner walls of the upper end and the lower end of the push block;
the inner wall of the right side of the transverse groove is internally provided with a vertical groove in a communicated manner, the inner wall of the vertical groove, which is close to the center, is communicated with the push block cavity, a vertical sliding block is arranged in the vertical groove in a sliding manner, one end of the vertical sliding block, which is close to the center, is abutted against the push block, the inner wall of the right side of the vertical groove is internally provided with a sliding block cavity in a communicated manner, a connecting sliding block is arranged in the sliding block cavity in a sliding manner, the connecting sliding block is fixedly connected with the vertical sliding block, an electromagnetic block is fixedly arranged in the inner wall of the sliding block cavity, which is close to the center;
a return spring is fixedly connected between the left end of the push block and the inner wall of the left side of the push block cavity, and a gear torsion spring is fixedly connected between the front end and the rear end of the gear and the front inner wall and the rear inner wall of the gear cavity;
the power device comprises a synchronous belt cavity arranged in the inner wall of the lower side of the communicating cavity, a left belt wheel is rotatably arranged in the synchronous belt cavity, a left screw rod is fixedly connected in the left belt wheel, a motor is fixedly arranged in the inner wall of the lower side of the synchronous belt cavity, the left screw rod is in power connection with the motor, the upper end of the left screw rod extends into the communicating cavity, a right belt wheel is rotatably arranged on the right side of the left belt wheel, a synchronous belt is connected between the left belt wheel and the right belt wheel, a right screw rod is fixedly connected in the right belt wheel, and the upper end of the right screw rod extends into the communicating cavity;
the opening and closing device comprises torsion spring cavities which are symmetrically and communicated and are arranged in the inner walls of the upper side and the lower side of the communication cavity, a door spindle is rotatably connected between the inner walls of the side, away from the center, of the torsion spring cavities, a rotating door is fixedly connected onto the door spindle, and a door spindle torsion spring is fixedly connected between the upper end and the lower end of the rotating door and the inner wall of the side, away from the center, of the torsion spring cavities;
in order to ensure the safety, the upper end surface, the lower end surface, the left end surface, the right end surface, the left end surface and the right end surface of the revolving door are simultaneously abutted against the inner wall of the communicating cavity;
the rear end of the revolving door is fixedly connected with a locking block, the locking block is internally provided with locking holes which are communicated up and down in a bilateral symmetry manner, the locking holes are internally provided with slidable locking rods in an up-down symmetry manner, the locking block is provided with slidable clamping plates in an up-down bilateral symmetry manner, the two locking rods at the upper side are fixedly connected with the clamping plates at the upper side, the two locking rods at the lower side are fixedly connected with the clamping plates at the lower side, and the left screw rod and the right screw rod penetrate through the two clamping plates and are in threaded connection with the;
the thread connection directions of the clamping plates on the upper side and the lower side are opposite to those of the left screw rod and the right screw rod;
the utility model discloses a device for sensing the position of a motor, including intercommunication chamber, intercommunication chamber upside inner wall, device main part upper end link firmly warning light and loudspeaker, the warning light with loudspeaker electric connection in the treater, both sides the response piece pass through cable electric connection in the treater, motor electric connection in the treater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399710.9A CN110185326B (en) | 2019-05-14 | 2019-05-14 | Intelligent robot for unlocking offices of government-enterprise units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910399710.9A CN110185326B (en) | 2019-05-14 | 2019-05-14 | Intelligent robot for unlocking offices of government-enterprise units |
Publications (2)
| Publication Number | Publication Date |
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| CN110185326A CN110185326A (en) | 2019-08-30 |
| CN110185326B true CN110185326B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910399710.9A Active CN110185326B (en) | 2019-05-14 | 2019-05-14 | Intelligent robot for unlocking offices of government-enterprise units |
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| CN (1) | CN110185326B (en) |
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| CN2635834Y (en) * | 2003-08-22 | 2004-08-25 | 李文晓 | Cylinder lock |
| CN201714179U (en) * | 2010-07-19 | 2011-01-19 | 董学书 | Double fingerprint authentication administrator confidential cabinet |
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| CN202164947U (en) * | 2011-07-28 | 2012-03-14 | 山东电力集团公司莱芜供电公司 | Protective cubicle door opened by two persons simultaneously |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110185326A (en) | 2019-08-30 |
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Effective date of registration: 20201112 Address after: Room 201, building 3, No. 49, Wengang South Road, Yannan high tech Zone, Yancheng City, Jiangsu Province 224000 Applicant after: Jiangsu intelligent Partner Robot Technology Co., Ltd Address before: 315000 Ningbo Station Village, Dingtang Town, Xiangshan County, Ningbo City, Zhejiang Province, No. 171 201 Applicant before: Xiangshan Ruiwen Intelligent Equipment Co.,Ltd. |
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