TWI884065B - Locks that show whether they are locked - Google Patents

Abstract

A lock capable of indicating whether the door is locked or not comprises a door latch device and an operating device, wherein the operating device can operate a door latch included in the door latch device to move from a locked position to an unlocked position, the operating device comprises a window and an indicator member that can move relative to the window, the indicator member comprises a locked indicator and an unlocked indicator, a locked operating mechanism included in the operating device can be used to drive the indicator member to move until the locked indicator is aligned with the window, thereby causing the operating device to be unable to link the door latch, and the locked operating mechanism can also drive the indicator member to move until the unlocked indicator is aligned with the window, thereby causing the operating device to be able to link the door latch.

Description

Locks that show whether they are locked

The present invention is a lock, in particular a lock that allows one to visually tell whether the lock is currently in a locked state that cannot be opened or an unlocked state that can be opened.

There is a lock available on the market that is suitable for being installed on a passage door. The passage door can be installed in, but is not limited to, the stairwells of each floor of a building. The non-automatic controlled passage door needs to be set to normally closed in order to prevent the fire and smoke from flowing out when a fire occurs. The lock installed on the passage door usually includes a door latch device installed on an inner side of the passage door and a door lock installed on the passage door. An operating device is provided on an outer side of the door frame, wherein the door latch device includes a door latch that engages with an adjacent door frame when the passage door is closed. When the operating device is not locked, the operating device allows the door latch to be operated to move from an upper latch position to an unlocked position. When the operating device is locked, the operating device cannot be used to directly operate the door latch to move from the upper latch position to the unlocked position.

Since the operating device cannot operate the door latch from the latched position to the unlocked position in all situations, for example, in the event of a fire, people on one side of the operating device still need to directly operate the operating device to know whether the operating device is locked. The operating device may become hot due to the temperature of the fire scene, and people who are not aware of the situation may be burned when operating the operating device. Furthermore, in an emergency situation of a fire, manual operation is still required to confirm whether the operating device is indeed locked. In the event of a fire, the speed of checking whether each passage door is indeed locked will be affected.

To this end, the present invention provides a lock capable of indicating whether the door is locked or not, comprising: a door latch device, comprising a door latch and an unlocking member linked to the door latch, the door latch being movable to an upper latch position and an unlocking position, the unlocking member independently links the door latch to move from the upper latch position to the unlocking position, the door latch device being adapted to be fixed on a first side surface of a door; a base body, comprising a window, a first coupling portion and a second coupling portion, the base body The invention relates to a door lock device, wherein the door lock is fixedly mounted on a second side surface of the door; an operating member is coupled to the second coupling portion, the operating member is coupled to the door lock of the door lock device in a linked manner, and the operation of the operating member is to independently link the door lock to move from the upper locking position to the unlocking position; a locking operating mechanism is coupled to the first coupling portion of the base body, the locking operating mechanism includes a toggle block, the locking operating mechanism is lockably coupled to the operating member, and the locking operating mechanism is unlocked when the locking operating mechanism itself is not unlocked. In the state where the toggle block cannot be driven, and in the state where the locking operating mechanism itself is unlocked, the toggle block can be driven; a toggle member is pivotally connected to the locking operating mechanism, the toggle member includes a first arm, and the toggle block is linked to the toggle member; an indicator member is movably accommodated in the seat body, the indicator member includes a locking indicator and an unlocking indicator, the first arm is linked to the indicator member, and when the locking operating mechanism brakes the operating member, the operating member The latch cannot be operated to move the door latch from the latched position to the unlocked position, the toggle block is linked to the toggle member to pivot, and the indicator member is pushed by the first arm to move to a position where the latched indicator is aligned with the window. When the latching operating mechanism releases the operating member, the operating member allows the door latch to be operated to move from the latched position to the unlocked position, the toggle block is linked to the toggle member to pivot, and the indicator member is pushed by the first arm to move to a position where the unlocked indicator is aligned with the window.

By aligning the unlocking indication and the locking indication of the indicator with the window, it is possible to know whether the operating device can link the door latch of the door latch device to move from the locking position to the unlocking position without directly operating the operating device. For example, in an emergency such as a fire, it helps to quickly confirm whether each lock is locked.

In one embodiment, the lock capable of indicating whether the lock is locked, wherein the base includes a mounting hole and a frame body coupled to the mounting hole, the first coupling portion is located between the mounting hole and the second coupling portion, the frame body includes a receiving groove, the window is located on an end surface of the frame body and is connected to the receiving groove, and the indicator is movably coupled to the receiving groove.

In one embodiment, the lock capable of indicating whether the lock is locked, wherein the indicator further comprises an unlocking wall close to the locking indicator and a locking wall close to the unlocking indicator and separated from the unlocking wall, a gap is formed between the locking wall and the unlocking wall, and the first arm of the toggle member passes through the gap and is located between the unlocking wall and the locking wall.

In one embodiment, the lock capable of displaying whether the lock is locked further comprises: a side cover, the frame comprises a flange near one side of the window and an extension further extending from the flange, the receiving groove is located on the inner side of the extension, the base further comprises a side wall, the mounting hole is formed on the side wall and comprises a first part and a second part, the first part extends from an outer surface of the side wall and is connected to the side wall. The second part extends from the inner surface of the side wall to the first part, the longitudinal cross-sectional area of the first part is larger than the longitudinal cross-sectional area of the second part, the flange of the frame is engaged with the first part and exposed on the outer surface, the extension passes through the second part and is located inside the seat, the side cover is fixed on the extension of the frame and the two ends of the side cover are against the inner surface of the side wall.

In one embodiment, the lock capable of indicating whether the door is locked further comprises: a driving member, which is rotatably coupled with the operating member and accommodated in the base; a sliding member, which is movably accommodated in the base, wherein the driving member pivotally pushes the sliding member to generate displacement; a driving member, which is movably coupled with the sliding member, wherein the driving member is linked to the door latch of the door latch device; a limiting member, which is rotatably accommodated in the base, wherein the toggle member further comprises a second arm and a third arm, wherein the limiting member is linked to the third arm, wherein the second arm is linked to the toggle block, and wherein the locking operating mechanism is in a state where ... When unlocking, the toggle block can be pivoted to press the second arm to cause the toggle member to pivot, the first arm pushes the indicator member to move, the third arm pushes the limit member to pivot, and the limit member can be pushed by the third arm to pivot to a blocking position and a non-blocking position. When the locking operating mechanism brakes the operating member, the limit member is located at the blocking position, the sliding member is blocked by the limit member and cannot be displaced, so that the driving member and the operating member cannot pivot. When the locking operating mechanism releases the operating member, the limit member is located at the non-blocking position, the sliding member is separated from the limit member and can be displaced, so that the driving member and the operating member can pivot.

The toggle member cooperates with the locking operating mechanism to achieve the effect of synchronously linking the indicator member and the limit member, making it very convenient to lock (the operating member cannot pivot) and unlock (the operating member can pivot) the operating device.

The present invention further provides a lock capable of indicating whether the door is locked, comprising: a door latch device, comprising a door latch, the door latch being movable to a latched position and an unlocked position; an operating device being linked to the door latch device, the operating device comprising a base and an indicator movably coupled to the base, the base comprising a window, the indicator comprising a locked indication and an unlocked indication, the operating device further comprising an operating member and a driving member linked to the door latch and the operating member, the driving member operating to cause the door latch to move from the latched position to the unlocked position, the operating device further comprising a control member capable of limiting the movement of the door latch. The driving member moves a limiter and a locking operating mechanism. The locking operating mechanism, the indicator and the limiter are each movably connected to a toggle member. When the locking operating mechanism operates, the toggle member is linked to pivot. The toggle member links the indicator member to move and simultaneously links the limiter to pivot to a blocking position and a non-blocking position. When the limiter is located at the blocking position, the driving member and the operating member cannot operate and the locking indication of the indicator member is aligned with the window. When the limiter is located at the non-blocking position, the driving member and the operating member can operate and the unlocking indication of the indicator member is aligned with the window.

By aligning the unlocking indication and the locking indication of the indicator with the window, it is possible to know whether the operating device can link the door latch of the door latch device to move from the locking position to the unlocking position without directly operating the operating device. For example, in an emergency such as a fire, it helps to quickly confirm whether each lock is locked.

In one embodiment, the lock capable of indicating whether the lock is locked, wherein the toggle member includes a first arm, a second arm and a third arm, the locking operating mechanism includes a lock core and a toggle block rotatably coupled with the lock core, the first arm is coupled with the indicator member, the third arm is coupled with the limit member, the second arm is coupled with the toggle block, when the lock core is not unlocked, the toggle block cannot rotate, when the lock core is unlocked, the toggle block rotates to press the second arm so that the first arm drives the indicator member to move and the third arm drives the limit member to pivot.

In one embodiment, the lock capable of indicating whether the lock is locked, wherein the base includes a mounting hole and a frame body combined with the mounting hole, the frame body includes a receiving groove, the window is located on an end surface of the frame body and is connected to the receiving groove, and the indicator is movably combined with the receiving groove.

In one embodiment, the lock capable of displaying whether the lock is locked further comprises: a side cover, the frame comprising a flange near one side of the window and an extension further extending from the flange, the base further comprising a side wall, the mounting hole is formed on the side wall and comprises a first portion and a second portion, the first portion extends from an outer surface of the side wall and is in contact with an inner surface of the side wall. The second part extends from the inner surface of the side wall to the first part, the longitudinal cross-sectional area of the first part is larger than the longitudinal cross-sectional area of the second part, the flange of the frame is engaged with the first part and exposed on the outer surface, the extension passes through the second part and is located inside the seat, the side cover is fixed on the extension of the frame and the two ends of the side cover are against the inner surface of the side wall.

The present invention will be more clearly understood with the detailed description of the illustrative embodiments of the present invention illustrated with accompanying drawings.

10: Locks

12: Door latch device

13: Door latch

14: Door

14A: First side

14B: Second side

15: Unlock the device

16: Operating device

20: Seat

22: Top

24: Lower end

26: Side wall

26A: Outer surface

26B: Inner surface

28: First joint

30: Second joint

32: The third junction

34: First guide rod

36: Second guide rod

38: Mounting hole

40: Part 1

42: Part 2

44: hinged socket

56: Operating parts

58: Shaft

62: socket part

70: Locking operating mechanism

72: Lock core

74: Dial block

76:Frame

78: flange

79: Extension

80: Container

82: Window

84: Indicator

86: Unlock the wall

88: Lock the wall

90: Gap

92: Locking instruction

94: Unlock instructions

96: Side cover

97:End

98: Driving piece

111: First Arm

113: Second Arm

115: The third arm

117: Cover

119:Lock ring

131: Limiting parts

133: Cardinal

135: First convex part

137:Second convex part

138: Bias spring

139: Sliding parts

151:Butt part

153: Chute

155: Driving parts

157: Ears

171: Linkage

173: Reset device

175: Inner cover

177:Driver

179: Top pole

191:Guide block

Figure 1 is an exploded view of an operating device.

Figure 2 is a state diagram of a door latch device of a lock and the operating device installed on the door.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2.

Figure 4 is a right side view of Figure 3.

Figure 5 is a cross-sectional view taken along line 5-5 of Figure 2.

Figure 6 shows the state of the operating device after it is locked.

Figure 7 is another status diagram after the operating device is locked.

All drawings are for the purpose of explaining basic teachings only. The number, position, relationship, and extension of the dimensions of the components constituting the illustrative embodiments will be described in the drawings or will be within the skill of the industry after reading and understanding the following description. In addition, after reading and understanding the following description, the exact dimensions and dimensional ratios to match specific force, weight, strength, and similar requirements are also within the skill of the industry.

The same reference numerals are used to indicate the same or similar elements in different drawings; please also understand that the terms such as "first", "second", "reverse", "front", "rear", "end", "side", etc. and similar terms in the text are only for the convenience of the viewer to refer to the structure in the drawings and are only used to help describe and illustrate the embodiments.

Referring to Figures 1 to 4, a lock 10 is mounted on a door 14, wherein the door 14 includes a first side surface 14A and a second side surface 14B separated from the first side surface 14A. The lock 10 includes a door latch device 12 fixed on the first side surface 14A and an operating device 16 fixed on the second side surface 14B.

The door latch device 12 includes a door latch 13 and an unlocking member 15 linked to the door latch 13. The door latch 13 can be moved to an upper latch position engaged with a door frame (not shown) and an unlocking position separated from the door frame (not shown). The unlocking member 15 is operated to move the door latch 13 from the upper latch position to the unlocking position. The door latch device 12 shown in the figure of the present invention adopts a channel lock as an embodiment.

The operating device 16 includes a base 20, the base 20 includes an upper end 22 and a lower end 24, the base 20 further includes a side wall 26 extending from the upper end 22 to the lower end 24, the side wall 26 includes an outer surface 26A and an inner surface 26B, the base 20 further includes a first joint 28, a second joint 30 and a third joint 32 formed on the side wall 26, and the base 20 also includes a mounting portion formed on the side wall 26. The mounting hole 38 includes a first portion 40 extending from the outer surface 26A to the inner surface 26B and separated from the inner surface 26B. The mounting hole 38 further includes a second portion 42 extending from the inner surface 26B to the first portion 40. The longitudinal cross-sectional area of the first portion 40 is slightly larger than the longitudinal cross-sectional area of the second portion 42. The seat 20 also includes a first guide rod 34 and a second guide rod 36 disposed on the side wall 26 protruding from the inner surface 26B.

The mounting hole 38 is located at the upper end 22, the first joint 28 is located between the mounting hole 38 and the second guide rod 36, the second guide rod 36 is located between the first joint 28 and the first guide rod 34, the first guide rod 34 is located between the second guide rod 36 and the second joint 30, the second joint 30 is located between the first guide rod 34 and the third joint 32, and the third joint 32 is located between the second joint 30 and the lower end 24.

The base 20 is attached to the second side surface 14B of the door 14, and the inner surface 26B faces the second side surface 14B and is spaced apart from each other. The base 20 and the door latch device 12 are screwed together by a plurality of screws to clamp them on the first side surface 14A and the second side surface 14B of the door 14.

The base 20 further includes a frame 76, which includes a flange 78 and an extension 79 extending from an end surface of the flange 78, wherein the extension 79 separates a receiving groove 80, and the frame 76 includes a window 82 extending from an outer surface to the receiving groove 80. The flange 78 of the frame 76 is engaged with the first portion 40 of the mounting hole 38, and the extension 79 passes through the second portion 42, so that the window 82 is exposed on the outer surface 26A of the side wall 26 and the receiving groove 80 is located on one side of the inner surface 26B.

The operating device 16 further includes an indicator 84 and a side cover 96 movably accommodated in the base 20, the indicator 84 includes an unlock indicator 94 and a lock indicator 92 formed on an outer surface, the unlock indicator 94 and the lock indicator 92 can be but not limited to patterns or patterns, the indicator 84 further includes an unlock wall 86 near the lock indicator 92 and a lock wall 88 near the unlock indicator 94, and the indicator 84 also includes a notch 90 formed between the lock wall 88 and the unlock wall 86. The indicator 84 is located in the receiving groove 80 and can be displaced along the receiving groove 80 to a position where the lock indicator 92 is aligned with the window 82 and the unlock indicator 94 is aligned with the window 82.

As shown in FIG. 5 , the side cover 96 includes two end portions 97 formed at both ends. The side cover 96 is fixedly connected to the extension portion 79 of the frame 76 and the two end portions 97 abut against the inner surface 26B of the side wall 26, so that the frame 76 cannot be separated from the mounting hole 38. In addition, the indicator 84 is located between the frame 76 and the side cover 96.

A locking operating mechanism 70 is coupled to the first coupling portion 28 of the base 20. According to the embodiment shown in the figure, the locking operating mechanism 70 of the present invention includes a lock cylinder 72 that can be rotated (unlocked) only after being coupled with a correct key and a toggle block 74 that is rotatably coupled with the lock cylinder 72. It can be understood that when the lock cylinder 72 is separated from the correct key or coupled with an incorrect key, it cannot be rotated. The toggle block 74 of the locking operating mechanism 70 is located on the same side as the inner surface 26B of the side wall 26.

The operating device 16 includes a toggle member 98 pivotally connected to the upper locking operating mechanism 70, a cover 117 and a lock ring 119. The upper locking operating mechanism 70 includes a first arm 111, a second arm 113 and a third arm 115. The first arm 111 and the third arm 115 are 180° apart around a pivot axis of the toggle member 98, and the second arm 113 is located between the first arm 111 and the second arm 113. The first arm 111 of the toggle member 98 passes through the notch 90 of the indicator member 84 and is located between the unlocking wall 86 and the upper locking wall 88. The first arm 111 is also located between the side cover 96 and the indicator member 84.

The cover 117 is sleeved on the outer side of the upper locking mechanism 70. The first arm 111 and the third arm 115 of the toggle member 98 are located between the cover 117 and the first joint 28. The lock ring 119 is screwed to the upper locking mechanism 70 and abuts against the cover 117. The first arm 111, the second arm 113 and the third arm 115 all pass through the outer side of the cover 117. In addition, the second arm 113 is located on the rotation path of the toggle block 74 of the upper locking mechanism 70, so that the toggle member 98 can be linked to pivot when the toggle block 74 rotates.

The operating device 16 further includes a stopper 131 rotatably accommodated in the base 20 and a slide member 139 movably accommodated in the base 20. The stopper 131 includes a pivot 133 and a first protrusion 135 and a second protrusion 137 extending from the pivot 133. The pivot 133 of the limiter 131 pivots with the first guide rod 34 and abuts against the inner surface 26B of the side wall 26. The third arm 115 of the toggle member 98 is located between the first protrusion 135 and the second protrusion 137. Therefore, it can be understood that the toggle block 74, the indicator 84 and the limiter 131 of the upper locking operating mechanism 70 are each linked to the toggle member 98. When the toggle member 98 pivots, the third arm 115 pushes the limiter 131 to pivot to a blocking position (as shown in FIG. 6) and a non-blocking position (as shown in FIG. 3). At the same time, the first arm 111 links the indicator 84 to generate displacement.

A bias spring 138 is provided between the limit member 131 and the seat body 20, and the bias spring 138 is used to bias the limit member 131 between the blocking position and the non-blocking position.

The sliding member 139 includes two sliding grooves 153 and an abutment portion 151 located outside the two sliding grooves 153. The sliding member 139 is movably accommodated in the seat 20, and the first guide rod 34 and the second guide rod 36 are slidably combined with the two sliding grooves 153 of the sliding member 139.

The operating device 16 further includes an operating member 56 and a pivot seat 44. The pivot seat 44 is fixedly connected to the second joint portion 30 and is located on the outer surface 26A of the side wall 26. The operating member 56 includes a shaft 58. The shaft 58 includes a sleeve portion 62 located at one end and having a non-circular cross-sectional shape. The shaft 58 of the operating member 56 is pivotally connected to the pivot seat 44 and is located on the same side as the outer surface 26A. The sleeve portion 62 of the shaft 58 passes through the pivot seat 44 and the side wall 26 and is located on the same side as the inner surface 26B.

The operating member 56 is rotatably coupled with a driving member 155, and the driving member 155 includes an ear 157. The driving member 155 is sleeved around the outer periphery of the sleeve portion 62 of the shaft 58. The driving member 155 and the sleeve portion 62 are each rotatably coupled with a link 171. The ear 157 of the driving member 155 is attached to the lower part of the abutment portion 151 of the sliding member 139, so that when the operating member 56 pivots, the driving member 155 can push the sliding member 139 to move.

A reset device 173 is fixedly provided on the third coupling portion 32 of the seat body 20, and the sleeve portion 62 of the operating member 56 is linked to the reset device 173. A spiral spring included in the reset device 173 is used to bias the operating member 56 to an initial position. The operating member 56 can be, but is not limited to, an L-shaped handle, and the reset device 173 is used to bias the L-shaped operating member 56 to an initial position substantially parallel to the ground.

The base 20 includes a side surface on which an inner cover 175 is fixed, so that the limiting member 131, the sliding member 139, the driving member 155, the connecting member 171 and the reset device 173 are all located between the inner cover 175 and the side wall 26.

The operating device 16 further includes a driving member 177 which is movably coupled to the operating member 56 and the door latch 13 of the door latch device 12. The driving member 177 is substantially located on the outer side of the inner cover 175 and is movably coupled to the sliding member 139. The driving member 177 includes a top rod 179 which extends into the door latch device 12 and is movably coupled to the door latch 13. The third coupling portion 32 of the base body 20 is further provided with a guide block 191, and the driving member 177 is slidably coupled to the guide block 191. When the operating member 56 pivots, the driving member 177 is displaced so that the top rod 179 drives the door latch 13 of the door latch device 12 to move from the upper latch position to the unlocked position.

The technical features of the lock 10 of the present invention have been described in detail. The operation of the lock 10 of the present invention will be further described below. Referring to Figures 3 and 4, assuming that the limiter 131 of the operating device 16 is located in the non-blocking position, the indicator 84 is located at the position where the unlocking indicator 94 is aligned with the window 82 (as shown in Figure 4), so that the unlocking indicator 94 can be seen in the window 82 from the outside of the operating device 16, thereby knowing that the operating device 16 can drive the door latch 13 of the door latch device 12 to move from the upper latch position to the unlocked position.

When the limiting member 131 is in the non-blocking position and the operating member 56 is pivoted, the driving member 155 pivots to push the sliding member 139 and the driving member 177 toward the upper end 22 of the seat 20, and the driving member 177 links the mechanism inside the door latch device 12 to make the door latch 13 move from the upper latch position to the unlocked position, thereby realizing the operation of opening the door 14.

Referring to FIGS. 3, 4, 6, and 7, when the limit member 131 is in the non-blocking position, the toggle block 74 is allowed to rotate after the correct key is used to unlock the locking operating mechanism 70. The toggle block 74 pushes the second arm 113 of the toggle member 98, so that the third arm 115 presses the second protrusion 137 to cause the limit member 131 to pivot from the non-blocking position to the blocking position. At the same time, the first arm 111 pushes the locking wall 88 of the indicator member 84, so that the indicator member 84 is locked. The member 84 moves to the position where the upper locking indicator 92 is aligned with the window 82 (as shown in FIG. 7 ). When the limit member 131 is at the blocking position, the limit member 131 is located on the moving path of the sliding member 139, so the sliding member 139 is blocked by the limit member 131 and cannot move. The driving member 177, the driving member 155 and the operating member 56 cannot operate. Thus, the driving member 177 cannot link the door latch 13 of the door latch device 12 to move from the upper locking position to the unlocking position.

When the limit member 131 is located at the blocking position, the lock operating mechanism 70 is unlocked with a correct key, and the toggle block 74 is allowed to rotate in the opposite direction. The toggle block 74 pushes the second arm 113 of the toggle member 98, so that the third arm 115 presses the first protrusion 135 to cause the limit member 131 to pivot from the blocking position to the non-blocking position. At the same time, the first arm 111 pushes the unlocking wall 86 of the indicator member 84, so that the indicator member 84 moves to the The unlocking indicator 94 is aligned with the window 82 (as shown in FIG. 4 ). When the stopper 131 is at the blocking position, the stopper 131 is outside the moving path of the slider 139. Therefore, the slider 139 is not blocked by the stopper 131 and can move. The drive member 177, the driving member 155 and the operating member 56 can all operate. Thus, the drive member 177 can also drive the door latch 13 of the door latch device 12 to move from the upper latch position to the unlocked position.

It can be understood from the technical features and related operations of the present invention that the lock 10 of the present invention includes at least the following advantages. For example, the unlocking indication 94 and the locking indication 92 of the indicator 84 are aligned with the window 82, respectively, so that it is possible to know whether the operating device 16 can link the door latch 13 of the door latch device 12 to move from the locking position to the unlocking position without directly operating the operating device 16, which helps to quickly confirm whether each lock 10 is indeed locked in an emergency such as a fire.

The toggle member 98 cooperates with the locking operating mechanism 70 to achieve the effect of synchronously linking the indicator member 84 and the limit member 131, making it very convenient to lock (the operating member 56 cannot pivot) and unlock (the operating member 56 can pivot) the operating device 16.

The basic teachings of the present invention have been explained, and many extensions and changes will be obvious to people with ordinary skills in this field. For example, the locking operating mechanism 70 may not be a lock cylinder 72 structure that is unlocked using a key. For example, the locking operating mechanism 70 may be an electrically driven device. When the operating device 16 receives a correct wireless signal, the dial block 74 is driven by electricity to rotate, thereby linking the indicator 84 to move and the limiter 131 to pivot. In this way, the effect described in the present invention can also be achieved.

Since the invention disclosed in the specification can be implemented in other specific forms without departing from the spirit or general features of the invention, and some of these specific forms have been pointed out, the embodiments disclosed in the specification should be regarded as illustrative rather than restrictive. The scope of the invention is defined by the scope of the attached patent application, not by the above description, and all changes that fall within the equivalent meaning and scope of the patent application will still be included in its scope.

16: Operating device

20: Seat

22: Top

24: Lower end

26: Side wall

28: First joint

30: Second joint

32: The third junction

34: First guide rod

36: Second guide rod

38: Mounting hole

40: Part 1

42: Part 2

56: Operating parts

62: socket part

70: Locking operating mechanism

72: Lock core

74: Dial block

76:Frame

78: flange

79: Extension

80: Container

82: Window

84: Indicator

86: Unlock the wall

88: Lock the wall

90: Gap

92: Locking instruction

94: Unlock instructions

96: Side cover

97:End

98: Driving piece

111: First Arm

113: Second Arm

115: The third arm

117: Cover

119:Lock ring

131: Limiting parts

133: Cardinal

135: First convex part

137:Second convex part

138: Bias spring

139: Sliding parts

151:Butt part

153: Chute

171: Linkage

173: Reset device

175: Inner cover

177:Driver

179: Top pole

191:Guide block

Claims (9)

A lock capable of indicating whether the door is locked or not, comprising: A door latch device, comprising a door latch and an unlocking member linked to the door latch, the door latch can be displaced to an upper latch position and an unlocking position, the unlocking member operates to independently link the door latch to move from the upper latch position to the unlocking position, the door latch device is suitable for being fixed on a first side surface included in a door; A seat body, comprising a window, a first coupling portion and a second coupling portion, the seat body is suitable for being fixed on a second side surface included in the door; An operating member is coupled to the second coupling portion, the operating member is coupled to the door latch of the door latch device in a linked manner, and the operation of the operating member is to independently link the door latch to move from the latched position to the unlocked position; A locking operating mechanism is coupled to the first coupling portion of the base body, the locking operating mechanism includes a toggle block, the locking operating mechanism is lockably coupled to the operating member, the toggle block cannot be driven when the locking operating mechanism itself is not unlocked, and the toggle block can be driven when the locking operating mechanism itself is unlocked; A toggle member pivotally connected to the locking operating mechanism, the toggle member includes a first arm, the toggle block is linked to the toggle member; An indicator member movably accommodated in the seat, the indicator member includes a locking indicator and an unlocking indicator, the first arm is linked to the indicator member , when the locking operating mechanism brakes the operating member, the operating member cannot operate the door latch from the locking position to the unlocking position, the toggle block links the toggle member to pivot, and the indicator is pushed by the first arm to move to a position where the locking indicator is aligned with the window. When the locking operating mechanism releases the operating member, the operating member allows the door latch to move from the locking position to the unlocking position, the toggle block links the toggle member to pivot, and the indicator is pushed by the first arm to move to a position where the unlocking indicator is aligned with the window. A lock capable of indicating whether the lock is locked as described in Item 1 of the patent application, wherein the base comprises a mounting hole and a frame coupled to the mounting hole, the first coupling portion is located between the mounting hole and the second coupling portion, the frame comprises a receiving groove, the window is located on an end surface of the frame and is connected to the receiving groove, and the indicator is movably coupled to the receiving groove. A lock capable of indicating whether the lock is locked as described in item 2 of the patent application, wherein the indicator further includes an unlocking wall close to the locking indicator and a locking wall close to the unlocking indicator and separated from the unlocking wall, a gap is formed between the locking wall and the unlocking wall, the first arm of the toggle member passes through the gap and is located between the unlocking wall and the locking wall. The lock capable of indicating whether it is locked as described in item 2 or 3 of the patent application scope further includes: A side cover, the frame includes a flange near one side of the window and an extension portion further extending from the flange, the receiving groove is located on the inner side of the extension portion, the base further includes a side wall, the mounting hole is formed on the side wall and includes a first part and a second part, the first part extends from an outer surface included in the side wall and is separated from an inner surface included in the side wall, the second part extends from the inner surface of the side wall to the first part, the longitudinal cross-sectional area of the first part is larger than the longitudinal cross-sectional area of the second part, the flange of the frame is embedded in the first part and exposed on the outer surface, the extension portion passes through the second part and is located in the base, the side cover is fixed on the extension portion of the frame and the two ends of the side cover are against the inner surface of the side wall. The lock capable of indicating whether the door is locked as described in item 1 of the patent application scope further comprises: A driving member, rotatably coupled with the operating member and accommodated in the seat body; A sliding member, movably accommodated in the seat body, the driving member pivoting pushes the sliding member to generate displacement; A driving member, movably coupled with the sliding member, the driving member being coupled to the door latch of the door latch device; A limiter is rotatably accommodated in the seat body, the toggle member further includes a second arm and a third arm, the limiter is linked to the third arm, the second arm is linked to the toggle block, when the upper locking operating mechanism is unlocked, the toggle block can be pivoted to press the second arm to cause the toggle member to pivot, the first arm pushes the indicator member to move, the third arm pushes the limiter to pivot, and the limiter can be moved by the third arm. The arm pushes and pivots to a blocking position and a non-blocking position. When the locking operating mechanism brakes the operating member, the limiter is located at the blocking position, the sliding member is blocked by the limiter and cannot be displaced, so that the driving member and the operating member cannot pivot. When the locking operating mechanism releases the operating member, the limiter is located at the non-blocking position, the sliding member is separated from the limiter and can be displaced, so that the driving member and the operating member can pivot. A lock capable of indicating whether the door is locked or not, comprising: A door latch device, comprising a door latch, the door latch being movable to a latched position and an unlocked position; An operating device, coupled to the door latch device in a linkage manner, the operating device comprising a base and an indicator movably coupled to the base, the base comprising a window, the indicator comprising a locked indication and an unlocked indication, the operating device further comprising an operating member and a driving member coupled to the door latch and the operating member, the driving member operating to cause the door latch to move from the latched position to the unlocked position, the operating device further comprising a limit member capable of limiting the movement of the driving member and a locking operating mechanism, the locking operating mechanism The mechanism, the indicator and the limiter are each movably coupled to a toggle member. When the locking operation mechanism is in operation, the toggle member is pivoted, and the toggle member moves the indicator member and pivots the limiter member to a blocking position and a non-blocking position. When the limiter member is in the blocking position, the driving member and the operating member cannot operate and the locking indication of the indicator member is aligned with the window. When the limiter member is in the non-blocking position, the driving member and the operating member can operate and the unlocking indication of the indicator member is aligned with the window. A lock capable of indicating whether the lock is engaged as described in Item 6 of the patent application, wherein the toggle member comprises a first arm, a second arm and a third arm, the locking operating mechanism comprises a lock core and a toggle block rotatably coupled to the lock core, the first arm is movably coupled to the indicator, the third arm is movably coupled to the limiter, the second arm is movably coupled to the toggle block, when the lock core is not unlocked, the toggle block cannot rotate, when the lock core is unlocked, the toggle block rotates to press the second arm so that the first arm drives the indicator to move and the third arm drives the limiter to pivot. A lock capable of indicating whether it is locked as described in Item 6 of the patent application, wherein the base comprises a mounting hole and a frame combined with the mounting hole, the frame comprises a receiving groove, the window is located on an end surface of the frame and communicated with the receiving groove, and the indicator is movably combined with the receiving groove. The lock capable of indicating whether it is locked as described in item 8 of the patent application scope further includes: A side cover, the frame includes a flange near one side of the window and an extension further extending from the flange, the base further includes a side wall, the mounting hole is formed on the side wall and includes a first part and a second part, the first part extends from an outer surface of the side wall and is separated from an inner surface of the side wall, the second part extends from the inner surface of the side wall to the first part, the longitudinal cross-sectional area of the first part is greater than the longitudinal cross-sectional area of the second part, the flange of the frame is embedded with the first part and exposed on the outer surface, the extension passes through the second part and is located in the base, the side cover is fixed on the extension of the frame and the two ends of the side cover are against the inner surface of the side wall.

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