indicator

Abstract

To provide an indicator that allows even a person with visual disability to easily determine a locked state and an unlocked state.SOLUTION: An indicator 101 that displays a locked state of a lock device 2 for locking a door 5 having a handle 41 comprises: a display member 43 provided so as to be displaced between a first state protruding from the handle 41 and a second state hidden in the handle 41; and a linking part 44 that displaces the display member 43 to the first state when the lock device 2 is in the locked state, and displaces the same to the second state when the lock device is in the unlocked state.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to an indicator that displays the locking state of a locking device that locks a door. [Background technology]

[0002] Various indicators of this kind have been proposed in the past.

[0003] For example, Patent Document 1 discloses a delivery box in which an indicator is provided on the front of the door, spaced away from the door opening button, and depending on whether the door is locked or not, displays "Ready for pickup" when there is no package in the receiving compartment, and displays "In use" when there is package in the receiving compartment.

[0004] Patent Document 2 also discloses a latch lock for a delivery box in which an indicator that displays the locked or unlocked state of the latch operation knob is provided on the front of the latch lock mounting base, and this indicator has a lock display member that displays when the latch operation knob is locked and an unlock display member that displays when the touch operation knob is unlocked, and in which the lock display member or unlock display member is displayed in the display window when the latch operation knob is operated to lock or unlock, and the unlock display member is displayed in the display window when the lock unit's key is used to unlock. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-131992 A [Patent Document 2] JP 2019-124002 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in all of these configurations, the display of the locked and unlocked states can be understood only by visual inspection, making it difficult to tell whether the door is locked or unlocked, especially for those with visual impairments.

[0007] The present invention has been made in light of the above circumstances, and its object is to provide an indicator that allows even a visually impaired person to easily check the locked and unlocked states. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an indicator that displays the locking state of a locking device that locks a door equipped with a handle, the indicator comprising: a display member that is displaceable between a first state where it protrudes from the handle and a second state where it is hidden by the handle; and an operating means that displaces the display member to the first state when the locking device is in the locked state and to the second state when the locking device is in the unlocked state. The handle has a recess, and the display member protrudes into the recess in the first state. It is characterized by the above. Effect of the Invention

[0009] According to the indicator of the present invention, even a visually impaired person can easily check the locked and unlocked states. [Brief description of the drawings]

[0010] The drawings show specific embodiments of the invention according to the present disclosure, including essential features of the invention as well as alternative and preferred embodiments. [Figure 1] 1 is a perspective view showing a delivery box equipped with an indicator according to a first embodiment of the present invention; [Diagram 2] FIG. 4 is a perspective view showing the locking device of the delivery box from the rear side. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. 4 is a cross-sectional plan view showing an upper portion of the cover of the locking device. [Figure 6]FIG. 4 is a cross-sectional plan view showing the lower part of the cover of the locking device from below. [Figure 7] FIG. [Figure 8] FIG. 4 is an exploded perspective view showing the locking device from the rear side with some parts omitted. [Figure 9] FIG. 4 is an exploded perspective view showing a locking latch and a hold latch of the locking device. [Figure 10] FIG. [Figure 11] 4 is a cross-sectional view for explaining the operation of the hold latch of the locking device. FIG. [Figure 12] 4 is a cross-sectional view for explaining the operation of the hold latch of the locking device. FIG. [Figure 13] 4 is a cross-sectional view for explaining the operation of the hold latch of the locking device. FIG. [Figure 14] 4 is a cross-sectional view for explaining a locking operation of a locking latch of the locking device. FIG. [Figure 15] 4 is a cross-sectional view for explaining a locking operation of a locking latch of the locking device. FIG. [Figure 16] 4 is a cross-sectional view for explaining a locking operation of a locking latch of the locking device. FIG. [Figure 17] 4 is a cross-sectional view for explaining a locking operation of a locking latch of the locking device. FIG. [Figure 18] FIG. 4 is a perspective view for explaining an unlocking operation of the locking latch of the locking device. [Figure 19] 4 is a cross-sectional view for explaining an unlocking operation of the locking latch of the locking device. FIG. [Figure 20] FIG. 4 is a perspective view for explaining an unlocking operation of the locking latch of the locking device. [Figure 21] 4 is a cross-sectional view for explaining an unlocking operation of the locking latch of the locking device. FIG. [Figure 22] FIG. 4 is a perspective view for explaining an unlocking operation of the locking latch of the locking device. [Figure 23] 4 is a cross-sectional view for explaining an unlocking operation of the locking latch of the locking device. FIG. [Figure 24] 4 is a cross-sectional view for explaining an emergency unlocking operation of the locking latch of the locking device. FIG. [Diagram 25]4 is a cross-sectional view for explaining an emergency unlocking operation of the locking latch of the locking device. FIG. [Figure 26] FIG. 11 is a front view showing a modified example of the indicator. [Figure 27] FIG. 11 is a front view showing a modified example of the indicator. [Figure 28] FIG. 11 is a front view showing a modified example of the indicator. [Figure 29] FIG. 11 is a front view showing a modified example of the indicator. [Diagram 30] 13 is an exploded perspective view showing a locking device for a delivery box equipped with an indicator according to a second embodiment of the present invention, viewed from the rear side. FIG. [Diagram 31] FIG. [Diagram 32] FIG. 10 is a schematic diagram showing an indicator according to a third embodiment of the present invention. [Diagram 33] FIG. 10 is a schematic diagram showing an indicator according to a fourth embodiment of the present invention. [Diagram 34] FIG. 13 is a schematic diagram showing an indicator according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

[0012] In FIG. 1, reference numeral 1 denotes a delivery box equipped with an indicator 101 according to the present invention.

[0013] This delivery box 1 has a housing 4 with an opening 3 on the front, and a door 5 for opening and closing the opening 3 of this housing 4.

[0014] The door 5 is pivotally supported at, for example, a right edge 6 on the housing 4 by a hinge (not shown).

[0015] In addition, a locking device 2 is attached near the left edge 7, which is the free end of the door 5.

[0016] The locking device 2 has a handle portion 8 provided on the outer side (front side) of the door 5, and a main body 9 provided on the inner side (rear side) of the door 5, as shown in FIG.

[0017] The main body 9 is equipped with a locking latch 10, and the tip 10a of this locking latch 10 engages with a housing engagement portion 11 provided on the periphery of the opening 3 of the housing 4, thereby enabling the door 5 to be locked in the closed position.

[0018] That is, as shown in FIGS. 3 and 4, the main body 9 has a base 12 attached to the inside of the door 5.

[0019] A box-shaped cover 13 that defines the approximate outer periphery of the main body 9 except for the base 12 side is supported on the base 12 so as to be movable toward and away from the base 12 .

[0020] That is, as shown in Figs. 5 and 6, the base 12 is provided with a pair of guide holes 12a, 12a penetrating therethrough in the front-rear direction.

[0021] Meanwhile, guide pins 13a, 13a are provided protruding from the upper inside (base 12 side) of the cover 13, which are fitted into the guide holes 12a, 12a so as to be slidable in the front-rear direction.

[0022] These guide pins 13a, 13a have screws 14, 14 screwed into their tips when inserted into the guide holes 12a, 12a, and the screws 14, 14 prevent the guide pins 13a, 13a from slipping out of the guide holes 12a, 12a.

[0023] A pair of inner guide pieces 13b, 13b extending toward the base 12 are provided on both sides of the lower part of the cover 13, and outer stoppers 13c, 13c protruding outward are formed at the tips of these inner guide pieces 13b, 13b.

[0024] On the other hand, outer guide pieces 12b, 12b into which the inner guide pieces 13b, 13b are slidably fitted are provided on both sides of the lower part of the base 12, and inner stoppers 12c, 12c that protrude inward are formed at the tips of these outer guide pieces 12b, 12b.

[0025] The outer stoppers 13c, 13c and the inner stoppers 12c, 12c prevent the inner guide pieces 13b, 13b from coming off the outer guide pieces 12b, 12b.

[0026] This allows the cover 13 to approach and separate from the base 12 in the front-rear direction.

[0027] Also, returning to Figures 3 and 4, an opening 13d is formed in the left side wall of the cover 13, through which the tip end 10a of the locking latch 10 can protrude and retract, and an opening 13e is formed in the right side wall of the cover 13, through which the rear end 10b of the locking latch 10 can protrude and retract.

[0028] Further, inside the cover 13, a frame 16 attached to the base 12 is provided.

[0029] This frame 16 has a vertical plate portion 16a that is arranged vertically parallel to the door 5, an upper horizontal plate portion 16b that is arranged horizontally forward from the upper edge of the vertical plate portion 16a, a lower horizontal plate portion 16c that is arranged horizontally forward from the lower edge of the vertical plate portion 16a, an upper fixed portion 16d that extends upward from the front edge of the upper horizontal plate portion 16b and is fixed to the base 12, and a lower fixed portion 16e that extends downward from the front edge of the lower horizontal plate portion 16c and is fixed to the base 12.

[0030] A first compression coil spring 17 having, for example, a conical shape is fixed to the vertical plate portion 16a of the frame 16 on the side facing the cover 13 so as to be expandable and contractible in the front-rear direction.

[0031] The cover 13 is fixed to the tip, which is the apex of this first compression coil spring 17 , so that the cover 13 is biased in a direction away from the base 12 .

[0032] Furthermore, the above-mentioned locking latch 10 is provided between the base 12 and the frame 16 .

[0033] The locking latch 10 has its lower surface guided by guide plates 12d, 12d provided on the base 12, and its upper and rear surfaces guided by a frame 16 so as to be slidable in the horizontal direction.

[0034] The front end 10a can be projected and retracted into an opening 13d of the cover 13, and the rear end 10b can be projected and retracted into an opening 13e of the cover 13.

[0035] As shown in Figs. 7 to 9, the locking latch 10 has a bifurcated tip 10a, and a gate-shaped gap 10d is formed between the bifurcated parts 10c, 10c.

[0036] Furthermore, on the base 12 side of the locking latch 10, a recessed groove 10e communicating with the gap 10d is provided along the length direction of the locking latch 10 (left and right direction).

[0037] A hold latch 23 is slidably fitted into the recessed groove 10e of the locking latch 10, and its head 23a can protrude and retract through the gap 10d of the locking latch 10, and can also protrude and retract through the opening 13d of the cover 13 regardless of the operation of the locking latch 10.

[0038] The hold latch 23 is biased in a direction protruding from the opening 13 d of the cover 13 by a first tension coil spring 24 , one end of which is attached to the hold latch 23 and the other end of which is attached to the base 12 .

[0039] In addition, the head 23a of the hold latch 23 is formed in a mountain shape having a front side inclined surface 23b and a rear side inclined surface 23c, and when the door 5 is opened, the front side inclined surface 23b engages with the housing engagement portion 11, thereby sinking against the biasing force of the first tension coil spring 24, and when the door 5 is closed, the rear side inclined surface 23c engages with the housing engagement portion 11, thereby sinking against the biasing force of the first tension coil spring 24.

[0040] Furthermore, the hold latch 23 is provided with guide rails 23d, 23d along the length direction of the hold latch 23 (left and right direction).

[0041] An auxiliary member 26 is slidably fitted into the guide rails 23d, 23d of the hold latch 23 and the recessed groove 10e of the locking latch 10.

[0042] The auxiliary member 26 has a first auxiliary member 27 which fits into the guide rails 23d, 23d and the recessed groove 10e, and a second auxiliary member 28 which is fixed to the first auxiliary member 27.

[0043] In addition, a second compression coil spring 29 is provided in the recess 10e of the locking latch 10, with one end attached to the locking latch 10 and the other end attached to the first auxiliary member 27, so as to urge the locking latch 10 and the first auxiliary member 27 in opposite directions.

[0044] Furthermore, the locking latch 10 and the first auxiliary member 27, which are biased in opposite directions by the second compression coil spring 29, are arranged so that the first abutment portion 27a provided on the first auxiliary member 27 abuts against the impact stop portion 10f provided on the locking latch 10, thereby restricting the movement of the locking latch 10 in the protruding direction relative to the first auxiliary member 27.

[0045] Furthermore, a second tension coil spring 30 is provided between the first auxiliary member 27 and the second auxiliary member 28, with one end attached to the second auxiliary member 28 and the other end fixed to the base 12, so as to urge the second auxiliary member 28 in the direction in which the tip portion 10a of the locking latch 10 is recessed.

[0046] Furthermore, the second auxiliary member is provided with a second abutment portion a that abuts against a stopper portion 12e provided on the base 12, so as to restrict the movement of the second auxiliary member .

[0047] Furthermore, on the base 12 side of the locking latch 10, a first guide portion 10g that engages with an engaging portion 13f provided on the base 12 side of the opening 13e of the cover 13 is provided.

[0048] The first guide portion 10g has a first parallel portion 10h and a second parallel portion 10i which are parallel to the direction in which the locking latch 10 projects and retracts.

[0049] The second parallel portion 10i is provided closer to the base 12 side and to the tip portion 10a side of the locking latch 10 than the first parallel portion 10h.

[0050] Further, an inclined portion 10j is provided between the first parallel portion 10h and the second parallel portion 10i so as to be continuous with the first parallel portion 10h and the second parallel portion 10i.

[0051] The first auxiliary member 27 is provided on the base 12 side with a second guide portion 27b that engages with the engaging portion 13f of the cover 13.

[0052] The second guide portion 27b of the first auxiliary member 27 is provided flush with the second parallel portion 10i of the locking latch 10.

[0053] Therefore, a step portion 31 (shown in Figures 5 and 6) is created between the impact stop portion 10f provided on the locking latch 10 and the first abutment portion 27a of the first auxiliary member 27, the step portion 31 being the distance between the first parallel portion 10h and the second parallel portion 10i of the locking latch 10, and this step portion 31 enables the first parallel portion 10h and the inclined portion 10j of the locking latch 10 and the first abutment portion 27a of the first auxiliary member 27 to simultaneously engage with the engagement portion 13f of the cover 13 as the locking latch 10 moves.

[0054] In other words, when the engaging portion 13f of the cover 13 engages with the second parallel portion 10i of the locking latch 10, the engagement between the first abutment portion 27a of the first auxiliary member 27 and the engaging portion 13f of the cover 13 is released, and the locking latch 10, the first auxiliary member 27 and the second auxiliary member 28 move in the direction in which the tip portion 10a of the locking latch 10 is recessed due to the biasing force of the second tension coil spring 30.

[0055] Furthermore, the above-mentioned handle portion 8 (shown in FIG. 1) includes a handle 41, a lock 42, and an indicator 101.

[0056] The indicator 101 indicates the locking state of the locking device 2, and has a display member 43 as shown in FIG.

[0057] The handle 41 has a front plate 41a formed in a generally elliptical shape that is long in the vertical direction, and a constricted portion 41b is formed in the generally vertical center of the front plate 41a.

[0058] Moreover, on both sides of this constricted portion 41b, curved recesses 41c, 41c are formed.

[0059] Further, on the rear side of the front panel 41a, that is, on the door 5 side, a side panel 41d is provided.

[0060] The side plate 41d is provided along the outer periphery of the front plate 41a and shifted inward from the outer periphery.

[0061] Therefore, the outer peripheral edge of the front plate 41a projects beyond the side plate 41d to form a gripping portion 41e to be gripped with fingers.

[0062] Furthermore, notches 41f, 41f are formed in the side plate 41d of the constricted portion 41b, and the display member 43 can protrude and retract from one of the notches 41f, 41f.

[0063] That is, the display member 43 is rotatably supported by a shaft 41g protruding from the rear surface of the handle 41, and can be displaced between a first state in which it protrudes from the handle 41 and a second state in which it is hidden behind the rear surface of the handle 41.

[0064] Further, a protruding portion 43b of the display member 43 protruding from the handle 41 is formed in a convex curved shape.

[0065] Furthermore, the display member 43 is configured to be displaced in conjunction with the protruding and retracting operation of the locking latch 10 by an interlocking portion 44 (operating means).

[0066] The interlocking portion 44 interlocks the displacement of the indication member 43 with the locked state of the locking device 2, and includes a third tension coil spring 45 and an engagement member 28b.

[0067] The third tension coil spring 45 has both ends connected to the handle 41 and the display member 43, and is configured to urge the display member 43 in the direction of protruding from the handle 41 toward the first state.

[0068] The engaging member 28b protrudes from the second auxiliary member 28 and engages with the rotating tip 43a of the display member 43 via a through hole 12g provided in the base 12 and a through hole 5b provided in the door 5.

[0069] When the tip 10a of the locking latch 10 is in the protruding state, the display member 43 is displaced to a first state in which it protrudes from the handle 41, and when the tip 10a of the locking latch 10 is in the retracted state, the display member 43 is displaced to a second state in which it is hidden behind the handle 41.

[0070] Furthermore, the lock 42 is fixed to the base 12 by a fixing member 46 inside the housing 4, by being inserted through a hole 41h provided at the top of the handle 41, a hole 5a provided in the door 5, a hole 12f provided in the base 12, and a hole 16f provided in the frame 16.

[0071] The lock 42 has a key operating portion 47 which is turned by a key P, and a cam member 48 which turns as the key operating portion 47 turns.

[0072] The cam member 48 has a pivoting tip 48a that abuts against the abutment portion 10k of the locking latch 10 through a hole 16g provided in the frame 16, and when the key P is rotated in the unlocking direction, the locking latch 10 is moved in the direction in which the tip 10a is retracted against the biasing force of the second tension coil spring 30.

[0073] In the above configuration, first, when delivery box 1 is not in use, door 5 is in an unlocked state, and tip portion 10a of locking latch 10 is retracted into cover 13, as shown in Figs.

[0074] At this time, the second abutment portion 28a of the second auxiliary member 28 rotates the rotating tip portion 43a of the display member 43 against the biasing force of the third tension coil spring 45, so that the display member 43 is in a second state where it is hidden by the handle 41.

[0075] Therefore, since the indicator 43 is hidden by the handle 41, it is possible to easily confirm that the door is in the physically unlocked state both visually and by touch.

[0076] Furthermore, the engaging portion 13f of the cover 13 engages with the second guide portion 27b of the first auxiliary member 27, and the cover 13 is brought close to the base 12.

[0077] In the unlocked state of this locking latch 10, as shown in Figure 11, when the door 5 is in the closed state, the hold latch 23 protrudes from the cover 13 due to the biasing force of the first tension coil spring 24, and the rear side inclined portion 23c of the hold latch 23 is in contact with the housing engagement portion 11, so that the door 5 is held in the closed state.

[0078] Next, as shown in FIG. 12, when the handle portion 8 is pulled, the front side inclined portion 23b of the hold latch 23 engages with the housing engaging portion 11 and sinks into the cover 13 against the biasing force of the first tension coil spring 24.

[0079] Next, as shown in FIG. 13, when the handle portion 8 is pulled further, the head portion 23a of the hold latch 23 climbs over the housing engaging portion 11, and the door opens.

[0080] At this time, the hold latch 23 protrudes from the cover 13 due to the biasing force of the first tension coil spring 24, and returns to its original state.

[0081] When the door 5 is closed, the hold latch 23 performs the reverse operation.

[0082] Therefore, when the locking latch 10 is in the unlocked state, the door 5 can be freely opened and closed, and the door 5 can be held in either the closed or open state.

[0083] Next, when locking, first, the rear end portion 10b of the locking latch 10 is pushed against the biasing force of the second tension coil spring 30 as shown in FIG.

[0084] Next, as shown in Figure 15, when the rear end 10b of the locking latch 10 is pushed into the cover 13, the engagement portion 13f of the cover 13 is disengaged from the second guide portion 27b of the first auxiliary member 27, and engages with the first parallel portion 10h of the first guide portion 10g of the locking latch 10 and also engages with the first abutment portion 27a of the first auxiliary member 27, and the cover 13 is spaced apart from the base 12.

[0085] This causes the locking latch 10 to enter the locked state.

[0086] In this state, the tip end 10a of the locking latch 10 protrudes from the cover 13 due to the biasing force of the second compression coil spring 29, but the rear end 10b of the locking latch 10 is not engaged with the engagement portion 13f of the cover 13, and therefore can be retracted into the cover 13 against the biasing force of the second compression coil spring 29.

[0087] That is, the tip 10 a of the locking latch 10 is capable of projecting and retracting from the cover 13 .

[0088] At this time, the hold latch 23 is also in a state in which it can be protruded or retracted relative to the cover 13 .

[0089] In this state, the engaging member 28b of the second auxiliary member 28 operates in conjunction with the protrusion and retraction of the locking latch 10, and accordingly, the rotating tip 43a of the display member 43 is rotated against the biasing force of the third tension coil spring 45, causing the display member 43 to displace between a first state in which it protrudes from the handle 41 and a second state in which it is hidden by the handle 41.

[0090] Conversely, when the indication member 43 is pressed by a finger, the indication member 43 can be displaced to the second state in which it is hidden by the handle 41, even though the locking latch 10 is in the protruding state.

[0091] Next, as shown in FIG. 16, when the handle portion 8 is pressed to close the door 5, the tip portion 10a of the locking latch 10 and the head portion 23a of the hold latch 23 engage with the housing engaging portion 11 and are recessed toward the inside of the cover 13.

[0092] Next, as shown in Figure 17, when the handle portion 8 is further pressed and the left edge 7 of the door 5 engages with the housing engagement portion 11, the tip portion 10a of the locking latch 10 and the head portion 23a of the hold latch 23 engage with the housing engagement portion 11 from the inside of the housing 4, and the locking of the door 5 is completed.

[0093] At this time, the locking latch 10 is in a protruding state, and the indicator member 43 is in a first state protruding from the handle 41, so that the locked state can be easily confirmed physically by both visual inspection and touch.

[0094] Next, to unlock, as shown in Figures 18 and 19, when the key P is inserted into the key operating portion 47 of the lock 42 and turned, the cam member 48 rotates and moves the locking latch 10 in the direction in which the tip portion 10a retracts, against the biasing force of the second compression coil spring 29.

[0095] Then, the locking latch 10 moves in a direction in which the tip portion 10a is inserted into the cover 13, as shown in FIGS.

[0096] With this movement, the engaging portion 13f of the cover 13 engages with the first parallel portion 10h and the inclined portion 10j of the locking latch 10.

[0097] At this time, the first contact portion 27a of the first auxiliary member 27 is engaged with the engagement portion 13f of the cover 13.

[0098] Moreover, the cover 13 gradually approaches the base 12 .

[0099] When the key P is further turned, the engaging portion 13f of the cover 13 engages with the second parallel portion 10i of the locking latch 10, as shown in FIGS.

[0100] Then, the engagement between the engagement portion 13f of the cover 13 and the first abutment portion 27a of the first auxiliary member 27 is released, and the engagement portion 13f of the cover 13 is engaged with the second guide portion 27b of the first auxiliary member 27.

[0101] At this time, the cover 13 is in a state close to the base 12 .

[0102] As a result, the locking latch 10, together with the first auxiliary member 27, moves in a direction retracting from the opening 13d of the cover 13 due to the biasing force of the second tension coil spring 30, and the unlocking of the door 5 is completed.

[0103] At this time, the indicator 43 is in the second state hidden by the handle 41, so that the unlocked state can be easily confirmed physically by both visual inspection and touch.

[0104] Next, when unlocking from inside the housing 4, when the cover 13 is pushed toward the base 12 (toward the door 5) as shown in FIG.

[0105] Then, as shown in Figure 25, the engagement between the engagement portion 13f of the cover 13 and the first abutment portion 27a of the first auxiliary member 27 is released, and the engagement portion 13f of the cover 13 engages with the second parallel portion 10i of the locking latch 10 and the second guide portion 27b of the first auxiliary member 27, and at the same time, the locking latch 10 and the first auxiliary member 27 are suddenly moved backward by the biasing force of the second tension coil spring 30.

[0106] That is, the locking latch 10 moves in a direction in which the tip portion 10a enters the opening 13d, and the unlocking of the door 5 is completed.

[0107] Therefore, if a child or the like is trapped inside the housing 4, he or she can escape from inside the housing 4 by pushing the cover 13 with hands and feet.

[0108] That is, in the event of an emergency, the door 5 can be easily unlocked from the inside of the housing 4 and opened.

[0109] According to the above configuration, the indicator member 43, which is displaceable between a first state in which it protrudes from the handle 41 and a second state in which it is hidden by the handle 41, is displaced by the interlocking portion 44 to the first state when the locking device 2 is in the locked state and to the second state when it is in the unlocked state. Therefore, the locked and unlocked states can be easily confirmed both visually and by touch through the physical displacement of the indicator member 43.

[0110] Therefore, even a visually impaired person can easily check the locked and unlocked states.

[0111] In addition, the handle 41 is designed so that the indicator 43 protrudes into the recess 41c formed by the narrowed portion 41b, which is narrowed in the middle, so that when locked, the narrowed portion 41b is recognized as having become thicker, i.e., the area of ​​the handle 41 is recognized as having become wider, and the shape of the protruding portion 43b changes, making it even easier to grasp the locked state.

[0112] Moreover, the outline of the curved recess 41c overlaps with the outline of the convexly curved display member 43 in a leaf shape, gradually expanding as it protrudes from the handle 41, providing an excellent design effect.

[0113] <Modification> In the first embodiment of the indicator 101, as shown in FIG. 10, the display member 43 is configured to protrude from one of the recesses 41c of the narrowed portion 41b. However, the display members 43 may be provided symmetrically and configured to protrude symmetrically from both recesses 41c, 41c.

[0114] In addition, in the first embodiment of the indicator 101, the protruding portion 43b protruding from the handle 41 of the display member 43 is formed in a convex curved shape as shown in FIG. 10. However, it may be formed so as to be flush with the parts of the handle 41 other than the recessed portion 41c as shown in FIG. 26, or may be formed in an uneven shape as shown in FIG. 27, or may be formed in an angular shape as shown in FIG. 28.

[0115] Furthermore, the handle 41 does not need to have the recess 41c as shown in FIG.

[0116] <Second embodiment> A second embodiment of the present invention will now be described with reference to the drawings.

[0117] In the second embodiment, the locking device 2 does not use the first auxiliary member 27 and the second auxiliary member 28 of the first embodiment.

[0118] That is, as shown in Figures 30 and 31, the hold latch 23 is biased in a protruding direction by a first tension coil spring 24, and the locking latch 10 is biased in a retracting direction by a second tension coil spring 30.

[0119] Further, the locking latch 10 is provided with an engaging member 28b of an interlocking portion 44 with which the pivot tip portion 43a of the display member 43 engages, whereby the display member 43 interlocks with the locking latch 10.

[0120] The cover 13 is fixed to the base 12 by screws 121 .

[0121] When the key operating portion 47 of the lock 42 is rotated by the locking operation of the key P, the rotating tip portion 48a of the cam member 48 abuts against the abutment portion 10m of the locking latch 10, and the tip portion 10a of the locking latch 10 moves in the protruding direction against the biasing force of the second tension coil spring 30.

[0122] At this time, the rotating tip portion 43a of the display member 43 engaged with the engaging member 28b of the locking latch 10 rotates in a direction in which the protruding portion 43b of the display member 43 protrudes from the handle 41 due to the biasing force of the third tension coil spring 45.

[0123] Conversely, when the key P is operated to unlock the door, the tip 10 a of the locking latch 10 is moved in the retracting direction by the biasing force of the second tension coil spring 30 .

[0124] At this time, the pivot tip 43a of the display member 43 engaged with the engagement member 28b of the locking latch 10 pivots against the biasing force of the third tension coil spring 45 in a direction in which the protruding portion 43b of the display member 43 is hidden by the handle 41.

[0125] <Third embodiment> A third embodiment of the present invention will now be described with reference to the drawings.

[0126] In this third embodiment, as shown in FIG. 32, the indicator 101 is provided with an interlocking unit (operating means) 102 which interlocks the displacement of the display member 43 with the locking state of the locking device 2, and this interlocking unit 102 is configured to have a locking latch detection unit 103 which detects the locking state of the locking latch 10, for example, mechanically or optically, and a display drive unit 104 such as a drive motor which displaces the display member 43 based on the detection result of the locking latch detection unit 103.

[0127] <Fourth embodiment> A fourth embodiment of the present invention will now be described with reference to the drawings.

[0128] In this fourth embodiment, as shown in FIG. 33, the indicator 101 is provided with a display operation unit (operation means) 105 for operating the displacement of the display member 43 in accordance with the locking state of the locking device 2, and this display operation unit 105 is configured to have a manual operation unit 106 for manually inputting the locked and unlocked states of the locking latch 10, and a display drive unit 107 such as a drive motor for displacing the display member 43 based on the input result of this manual operation unit 106.

[0129] <Fifth embodiment> Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings.

[0130] In this fifth embodiment, as shown in FIG. 34, the locking device 2 is equipped with an electronic lock 111, which is configured to have a locking operation unit 112 such as a numeric input button for locking and unlocking, and a locking drive unit 113 that drives the locking latch 10 to extend and retract based on an input from the locking operation unit 112.

[0131] In addition, the indicator 101 is provided with an interlocking unit (operation means) 114 that interlocks the displacement of the display member 43 with the locking state of the locking device 2, and this interlocking unit 114 is configured to have a display drive unit 115 such as a drive motor that displaces the display member 43 based on input from the locking operation unit 112.

[0132] The configurations of the second to fifth embodiments described above can achieve the same effects as the first embodiment.

[0133] In the above-described embodiment, the indicator 101 is applied to the delivery box 1 together with the locking device 2, however, the present invention is not limited to the delivery box 1, and may of course be applied to toilets, truck beds, refrigerators, containers, etc. together with the locking device 2.

[0134] The disclosure regarding the present invention described above can be summarized at least as follows.

[0135] That is, the present invention is an indicator that displays the locking state of a locking device that locks a door equipped with a handle, and includes a display member that is displaceable between a first state where it protrudes from the handle and a second state where it is hidden by the handle, and an operating means that displaces the display member to the first state when the locking device is in the locked state and to the second state when the locking device is in the unlocked state. The handle has a recess, and the display member protrudes into the recess in the first state. It is characterized by the above.

[0136] The above invention can include at least the following embodiments, which can be adopted separately or in combination with each other.

[0138] (2) The handle has a narrowed portion in the middle, and a recess is formed in this narrowed portion.

[0139] (3) The recess is formed in a curved shape.

[0140] (4) The display member is formed so that the protruding portion extending from the handle is flush with the rest of the handle other than the recessed portion.

[0141] (5) The display member has a protruding portion extending from the handle that is formed into a convex curved shape.

[0142] (6) The display member has a protruding portion extending from the handle that is formed in an uneven shape.

[0143] (7) The display member has a protruding portion that protrudes from the handle and is formed into an angular shape.

[0144] (8) The operating means includes an interlocking portion that interlocks the displacement of the display member with the locked state of the locking device. [Explanation of symbols]

[0145] 2 Locking device 5 Doors 41 Handle 41b Neck part 41c Recess 43 Display material 43b Protruding part 44 Operation means (interlocking part) 101 Indicator 102 Operation means (interlocking part) 105 Operation means (display operation section) 114 Operation means (interlocking part)

Claims

1. An indicator for displaying a locking state of a locking device for locking a door equipped with a handle, an indicator member provided to be displaceable between a first state where the indicator member protrudes from the handle and a second state where the indicator member is hidden by the handle; an operating means for shifting the indicating member to the first state when the locking device is in a locked state and to the second state when the locking device is in an unlocked state; Equipped with The handle has a recess, The indicator is characterized in that the display member is configured to protrude into the recess in the first state.

2. 2. The indicator according to claim 1, wherein the handle has a narrowed portion at a middle portion thereof, and the recess is formed in the narrowed portion.

3. 2. The indicator according to claim 1, wherein the recess is formed in a curved shape.

4. 2. The indicator according to claim 1, wherein the display member has a protruding portion protruding from the handle so as to be flush with a portion of the handle other than the recessed portion.

5. 2. The indicator according to claim 1, wherein the display member has a protruding portion protruding from the handle in a convex curved shape.

6. 2. The indicator according to claim 1, wherein the display member has a protruding portion protruding from the handle and formed in an uneven shape.

7. 2. The indicator according to claim 1, wherein the display member has a protruding portion protruding from the handle in an angular shape.

8. 2. The indicator according to claim 1, wherein the operating means includes an interlocking portion that interlocks the displacement of the display member with the locking state of the locking device.

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