A toilet door lock

Abstract

The invention discloses a toilet door lock, comprising a lock body, a driving shaft, an outer pedal, an inner pedal, a transmission pin and a driving spring, wherein the lock body is arranged on a door panel, the driving shaft is arranged in the lock body in a vertical direction, the outer pedal is arranged on the outer side of the door panel, the inner pedal is arranged on the inner side of the door panel, the outer pedal is connected with the inner pedal and is arranged on the lock body in a vertical direction for sliding, and the transmission pin is arranged on the outer pedal and is connected with the driving shaft; during the process that the outer pedal and the inner pedal move back and forth in the vertical direction relative to the lock body, the transmission pin can be driven to drive the driving shaft to rotate so as to drive the door panel to open and close; the driving spring is connected with the inner pedal, and can drive the inner pedal and the outer pedal to move upward to a terminal position relative to the lock body, so that the driving shaft drives the door panel to rotate to close. The toilet door lock can open and close the door panel without touching the door handle, thereby avoiding the risk of bacteria on the hands and improving the hygiene and safety of the user.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular to a toilet door lock. Background Art

[0002] Toilets are important places for people to solve private problems. Public toilets are important places for people to solve private problems outdoors. With the development of my country's social infrastructure, the large-scale construction of public toilets is indispensable. In order to ensure the privacy of people in the toilet, toilet door locks are generally installed on the toilet door.

[0003] In the prior art, when people use a public toilet, they need to manually lock the door. However, if the user forgets to lock the toilet door in an emergency, the uninformed waiting person outside may accidentally open the toilet door, causing an embarrassing situation. In addition, when people open and lock the door, they need to pull the door handle and push the door lock, which easily leads to contamination of bacteria on the door lock and door handle in the process, making it impossible to ensure hygiene and safety, and affecting people's health. Summary of the invention

[0004] In view of the above problems, the present invention proposes a toilet door lock to overcome the above problems or at least partially solve the above problems.

[0005] A toilet door lock comprises a lock body, a drive shaft, an outer pedal, an inner pedal, a transmission pin and a drive spring, wherein the lock body is arranged on the door panel, the drive shaft is arranged in the lock body and rotates in the vertical direction, the outer pedal is located on the outer side of the door panel, and the inner pedal is located on the inner side of the door panel, the outer pedal and the inner pedal are connected and are slidably arranged on the lock body in the vertical direction, and the transmission pin is arranged on the outer pedal and connected to the drive shaft; during the process of the outer pedal and the inner pedal moving back and forth in the vertical direction relative to the lock body, the transmission pin can drive the drive shaft to rotate so as to drive the door panel to open and close; the drive spring is connected to the inner pedal, and can drive the inner pedal and the outer pedal to move upward to the terminal position relative to the lock body, so that the drive shaft drives the door panel to rotate to close.

[0006] Preferably, the toilet door lock is also provided with a transmission shaft, a control piston, a control plate, a limit column and a push plate; the transmission shaft is arranged in the horizontal direction, one end of which is rotatably connected to the outer pedal through a torsion spring and is provided with a square pin extending in the horizontal direction, and the other end is fixedly connected to the inner pedal; the control piston is slidably arranged on the outer pedal in the horizontal direction through a piston spring, one end of the control piston is provided with a straight groove, the lower end of the straight groove is a piston inclined surface, and the piston inclined surface is connected to the straight groove; the transmission shaft can overcome the torsion spring and rotate until the square pin is aligned with the straight groove, so as to form the insertion of the straight groove and the square pin to limit the rotation of the transmission shaft; the control plate is slidably arranged at the bottom of the outer pedal in the vertical direction, and the upper end of the control plate is provided with a control plate inclined surface The inclined surface of the control plate can abut against the inclined surface of the piston to drive the control piston to overcome the piston spring and move to disengage from the plug-in with the square pin; a limit plate is provided on the inner pedal, and when the square pin is plugged into the slot, the inner pedal remains in a horizontal state, and when the square pin is disengaged from the slot, the torsion spring drives the inner pedal to drive the limit plate to rotate downward; the push plate is arranged on the outside of the lock body and is located below the control plate, and can abut against the control plate that moves downward to the terminal position to drive the control plate to push the control piston to move; the limit column is located on the inner side of the lock body and is located below the inner pedal, and the limit column can abut against the limit plate after rotating downward to limit the downward movement of the inner pedal.

[0007] Preferably, the toilet door lock is also provided with a locking pin; the locking pin is arranged upward on the top of the outer pedal, and a positioning hole is provided on the drive shaft; when the outer pedal moves upward to the terminal position, the locking pin is inserted into the positioning hole to limit the rotation of the drive shaft relative to the lock body.

[0008] Preferably, the locking pin is connected to the outer pedal via a locking spring, and the locking pin is driven to extend by the locking spring.

[0009] Preferably, the limit plate includes a pedal plane and a pedal arc surface. Driven by the torsion spring, the pedal plane first abuts against the end of the limit column. As the inner pedal moves upward to the terminal position, the limit plate gradually rotates until the pedal arc surface is located above the limit column.

[0010] Preferably, the outer pedal is provided with a pedal pin, and the control board is provided with a control board groove along the vertical direction; the pedal pin is slidably connected to the control board groove.

[0011] Preferably, the control piston can overcome the movement of the piston spring, so that the other end of the control piston extends out of the outer pedal in a horizontal direction.

[0012] Preferably, a spiral groove is provided on the outer circumferential surface of the drive shaft, and the transmission pin is slidably connected to the outer pedal through a transmission spring, and the transmission spring drives the transmission pin to extend into the spiral groove; the lower groove surface of the spiral groove is a downward inclined surface, and the upper groove surface of the spiral groove is a straight surface; the transmission pin can move from top to bottom and abut against the lower groove surface and overcome the retraction of the transmission spring to pass over the lower groove surface, and the transmission pin can move from bottom to top and abut against the upper groove surface to push the drive shaft to rotate.

[0013] Preferably, the toilet door lock is also provided with a connecting rod assembly, a driving hinge, a follower hinge and an installation hinge; the connecting rod assembly is arranged in a horizontal direction, one end of which is eccentrically hinged to the driving shaft, and the other end is hinged to one end of the driving hinge; the driving hinge is rotatably arranged on the door panel, the other end of the driving hinge is hinged to one end of the follower hinge, the other end of the follower hinge is rotatably arranged on the door frame, and the installation hinge is installed between the door panel and the door frame; when the inner pedal and the outer pedal move from the downward moving terminal position to the upward moving terminal position, the driving shaft rotates 360 degrees in one direction to drive the door panel to complete one opening and closing.

[0014] Preferably, the connecting rod assembly is composed of a plurality of connecting rods hinged in sequence and slidably arranged on the lock body.

[0015] The toilet door lock of the present invention has the following beneficial technical effects:

[0016] 1. In the present invention, by arranging a driving shaft, an outer pedal, an inner pedal and a driving spring, when the outer pedal or the inner pedal is stepped on to drive the transmission pin to move downward, and under the action of the driving spring, the outer pedal and the inner pedal are driven to move upward with the transmission pin, the transmission pin can control the driving shaft to rotate and drive the door panel to open and close, so that the user can open and close the door panel without touching the door handle with his hands, avoiding the risk of bacteria on the hands and improving the hygiene and safety of the user.

[0017] 2. In the present invention, a transmission shaft, a control piston and a control plate are provided, and a slot and a square pin are provided between the control piston and the transmission shaft, and a limit plate is provided on the inner pedal, and a limit column and a push plate are provided on the lock body. When the outer pedal is driven to move downward until the control plate and the push plate abut against each other, the control piston can release the rotation restriction on the transmission shaft and the inner pedal can drive the limit plate to rotate. When the driving spring pushes the inner pedal to move upward to the terminal, the inner pedal automatically rotates to the top of the limit column with the limit plate under the action of the torsion spring. In this way, before the inner pedal rotates to a horizontal state again, the inner pedal and the outer pedal cannot move downward any further, thereby preventing the outer pedal from being driven downward outside the door and causing the drive shaft to open the door panel, thereby realizing automatic door locking after the user enters the toilet and preventing outsiders from opening the door panel during the use of the toilet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the cross-sectional structure of the toilet door lock of this embodiment;

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction;

[0021] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure along the CC direction;

[0022] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure along the DD direction;

[0023] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the EE direction;

[0024] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure along the FF direction;

[0025] Figure 8 for Figure 6 The schematic diagram of the local enlarged structure at position I in the middle;

[0026] Fig. 9 for Figure 1 Schematic diagram of the cross-sectional structure along the GG direction;

[0027] Fig.10 When the door panel is opened in this embodiment Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0028] Fig.11 is a three-dimensional view of the drive shaft in this embodiment;

[0029] Fig.12 This is a three-dimensional view of the control piston in this embodiment. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Combination Figures 1 to 12 As shown, the toilet door lock of this embodiment includes a lock body 1, a drive shaft 2, an outer pedal 3, an inner pedal 4, a transmission pin 5 and a drive spring 6. The lock body 1 is arranged on the door panel 7, the drive shaft 2 is arranged in the lock body 1 in a vertical direction, the outer pedal 3 is located on the outer side of the door panel 7, the inner pedal 4 is located on the inner side of the door panel 7, the outer pedal 3 and the inner pedal 4 are connected and arranged on the lock body 1 in a vertical direction, and can perform synchronous reciprocating movement in the vertical direction relative to the lock body 1. The transmission pin 5 is arranged on the outer pedal 3 and connected to the drive shaft 2. In the process of the outer pedal 3 and the inner pedal 4 reciprocating in the vertical direction relative to the lock body 1, the transmission pin 5 can be driven to control the drive shaft 2 to rotate, so that the drive shaft 2 drives the door panel 7 to open and close. The drive spring 6 is connected to the outer pedal 3, and can drive the outer pedal 3 and the inner pedal 4 to move upward to the terminal position relative to the lock body 1, so that the drive shaft 2 drives the door panel 7 to rotate to close.

[0032] In the toilet door lock of this embodiment, a drive shaft, an outer pedal, an inner pedal and a drive spring are provided. When the outer pedal or the inner pedal is stepped on to drive the transmission pin to move downward, and the outer pedal and the inner pedal are driven to move upward with the transmission pin under the action of the drive spring. The transmission pin can control the drive shaft to rotate and drive the door panel to open and close. In this way, the user can open and close the door panel without touching the door handle with his hands, avoiding the risk of bacteria on the hands and improving the user's hygiene and safety.

[0033] Combination Figures 1 to 12 As shown, the toilet door lock of this embodiment is also provided with a transmission shaft 8, a control piston 9, a control plate 10, a limit column 11 and a push plate 12. Among them, the transmission shaft 8 is arranged in the horizontal direction, one end of which is rotatably connected to the outer pedal 3 through a torsion spring 13 and is provided with a square pin 14 extending in the horizontal direction, and the other end is fixedly connected to the inner pedal 4. The control piston 9 is slidably arranged on the outer pedal 3 in the horizontal direction through a piston spring 15, and one end of the control piston 9 is provided with a straight groove 16, and the lower end of the straight groove 16 is a piston inclined surface 17, as shown in FIG. Figure 8 and Fig.12As shown. The transmission shaft 8 can overcome the torsion spring 13 and rotate until the square pin 14 is aligned with the slot 16, so as to form the insertion of the slot 16 and the square pin 14 to limit the rotation of the transmission shaft 8. The control plate 10 is slidably arranged at the bottom of the outer pedal 3 in the vertical direction. The upper end of the control plate 10 is provided with a control plate inclined surface 18. The control plate inclined surface 18 can abut against the piston inclined surface 17 to drive the control piston 9 to overcome the piston spring 15 and move to the slot 16 to disengage from the insertion of the square pin 14. A limit plate 19 is provided on the inner pedal 4, and is located on the lower side of the inner pedal 4 in the downward rotation direction around the transmission shaft 8, that is, Figure 7 At the bottom position of the inner pedal 4 shown in the figure, when the square pin 14 is plugged into the slot 16, the inner pedal 4 remains in a horizontal state, that is, Figure 7 In the horizontal state shown, when the square pin 14 is disengaged from the slot 16, the torsion spring 13 can drive the transmission shaft 8 to rotate, so as to drive the limit plate 19 to rotate downward through the inner pedal 4, that is, along the Figure 7 The locking rod 11 is located on the inner side of the lock body 1 and below the inner pedal 4. The locking rod 11 can abut against the locking plate 19 after the locking rod 11 rotates downward to limit the inner pedal 4 from moving downward. The push plate 12 is arranged on the outer side of the lock body 1 and below the control plate 10. The push plate 12 can abut against the control plate 10 moving downward to drive the control plate 10 to push the control piston 9 to move, that is, along the locking rod 11. Figure 8 Move right as shown.

[0034] In the toilet door lock of the present embodiment, a transmission shaft is provided to connect the outer pedal and the inner pedal for relative rotation, a control piston and a control plate are provided on the outer pedal, a straight groove and a square pin that can be plugged in to limit the rotation of the transmission shaft are formed between the control piston and the transmission shaft, and a limit plate is provided on the inner pedal, and a limit column and a push plate are provided on the lock body. When the outer pedal is driven to move downward until the control plate abuts the push plate, the control piston releases the rotation restriction on the transmission shaft and the inner pedal drives the limit plate to rotate. When the driving spring pushes the inner pedal to move upward to the terminal, the inner pedal automatically rotates with the limit plate to the top of the limit column under the action of the torsion spring. In this way, before the inner pedal rotates to a horizontal state again, the inner pedal and the outer pedal cannot move downward any further, thereby preventing the outer pedal from being driven downward outside the door and causing the drive shaft to open the door panel, thereby realizing automatic door locking after the user enters the toilet and preventing outsiders from opening the door panel during use of the toilet.

[0035] Combination Figure 5As shown, in the toilet door lock of this embodiment, a locking pin 20 is further provided. The locking pin 20 is upwardly arranged on the top of the outer pedal 3, and a downwardly facing positioning hole 21 is provided on the drive shaft 2. When the outer pedal 3 moves upward to the terminal position, the locking pin 20 is just inserted into the positioning hole 21 to limit the rotation of the drive shaft 2. At this time, by providing the locking pin and the positioning hole between the outer pedal and the drive shaft, the rotation of the drive shaft can be further limited, thereby improving the automatic door locking effect.

[0036] At the same time, in this embodiment, the locking pin 20 is connected to the outer pedal 3 through the locking spring 22, and the locking pin 20 is driven to extend by the locking spring 22. In this way, before the outer pedal moves upward with the locking pin and does not reach the terminal position of the upward movement, the locking pin can be driven by the plane of the positioning hole provided on the driving shaft to overcome the locking spring and temporarily retract. When the rotation of the driving shaft aligns the locking pin with the positioning hole, the locking pin is driven by the locking spring to extend into the positioning hole, completing the automatic locking connection between the outer pedal and the driving shaft.

[0037] Combination Figure 7 As shown, in the present embodiment, the limit plate 19 includes a pedal plane 23 and a pedal arc surface 24. When the limit plate 19 rotates downward with the inner pedal 4 driven by the torsion spring 13, the pedal plane 23 first forms an abutment with the end of the limit column 11. Afterwards, the limit plate 19 always maintains an abutment with the limit column 11 during the process of moving upward with the inner pedal 4. When the inner pedal 4 moves upward to the terminal position and forms a vertical state, the limit plate 19 rotates until the pedal arc surface 24 is located above the limit column 11, thereby limiting the downward movement of the inner pedal 4 in the vertical state. In this way, when the inner pedal 4 is rotated in the reverse direction, for example, when the foot is stepped on the inner pedal 4 to make it rotate in the reverse direction around the transmission shaft 8, that is, Figure 7 As shown in the clockwise rotation, the pedal arc surface 24 can be smoothly moved away from above the limiting column 11 to release the restriction on the downward movement of the inner pedal 4.

[0038] Combination Figure 8 As shown, in this embodiment, a pedal pin 25 is further provided on the outer pedal 3, and a control plate slot 26 is provided on the control plate 10 along the vertical direction. The control plate slot 26 and the pedal pin 25 form a relative sliding connection along the vertical direction. The pedal pin 25 can limit the maximum position of the control plate 10 moving downward, and the control plate 10 is always kept in the straight groove 16. In this way, the connection between the pedal pin and the control plate slot can form a guiding effect on the movement of the control plate and limit the rotation of the control piston, thereby improving the accuracy of the control of the control piston movement by the control plate.

[0039] Combination Fig.12As shown, in the present embodiment, by setting the pedal pin 25 and restricting the control plate 10 in the straight groove 16, the control piston 9 can be made cylindrical. Of course, in other embodiments, the other end of the control piston 9 that forms a sliding connection with the outer pedal 3 can also be directly designed to be a square cross-section, thereby restricting the control piston 9 from rotating.

[0040] Further, combined with Figure 8 As shown, in this embodiment, the control piston 9 can overcome the piston spring 15, so that the other end of the control piston 9 extends out of the outer pedal 3 in the horizontal direction, that is, along Figure 8 The right side direction shown extends to the outside of the outer pedal 3. In this way, the part that the control piston extends out can be used as a mark to remind outsiders that there is someone in the toilet.

[0041] Combination Figure 5 and Fig.11 As shown, in this embodiment, the outer circumferential surface of the drive shaft 2 is provided with a spiral groove 27, and the transmission pin 5 is slidably connected to the outer pedal 3 through the transmission spring 38, and the transmission spring 38 drives the transmission pin 5 to extend into the spiral groove 27. The lower groove surface 28 of the spiral groove 27 is a downward inclined surface, and the upper groove surface 29 of the spiral groove 27 is a straight surface. At this time, when the transmission pin 5 moves from top to bottom, it can abut against the lower groove surface 28 to overcome the retraction of the transmission spring 38 and pass over the lower groove surface 28. Conversely, when the transmission pin 5 moves from bottom to top, it can abut against the upper groove surface 29 to push the drive shaft 2 to rotate.

[0042] At this time, by setting a unidirectional spiral groove on the drive shaft, the unidirectional rotation control of the drive shaft can be achieved during the reciprocating movement of the inner pedal and the outer pedal with the transmission pin, thereby achieving the opening and closing control of the door panel.

[0043] Combination Figure 1 , Figure 2 and Fig.10 As shown, in the toilet door lock of this embodiment, there is also provided a connecting rod assembly formed by hinged connection of a first connecting rod 30, a second connecting rod 31 and a third connecting rod 32 in sequence, as well as a driving hinge 33, a follower hinge 34 and an installation hinge 35. The connecting rod assembly is slidably arranged in the lock body 1, the end of the first connecting rod 30 is eccentrically hinged with the driving shaft 2, the end of the third connecting rod 32 is hinged with one end of the driving hinge 33, the driving hinge 33 is rotatably arranged on the door panel 7, and the other end of the driving hinge 33 is hinged with one end of the follower hinge 34, and the other end of the follower hinge 34 is rotatably arranged on the door frame 36, and the installation hinge 35 is installed between the door panel 7 and the door frame 36. Among them, when the inner pedal 4 and the outer pedal 3 move from the downward terminal position to the upward terminal position, that is, Figure 1As shown in the figure, when moving from bottom to top, the drive shaft 2 can be rotated 360 degrees in one direction by the transmission pin 5, and the door panel 7 just completes a 90-degree opening and closing. In this way, by adopting the transmission mode of the connecting rod assembly and the hinge, the opening and closing of the door panel can be controlled by the rotation of the drive shaft.

[0044] In addition, combined Figure 6 As shown, in this embodiment, the lock body 1 is further provided with two guide grooves 37. The two guide grooves 37 are respectively located on the outer side and the inner side of the lock body 1 to guide the outer pedal 3 and the inner pedal 4 to reciprocate in the vertical direction.

[0045] Combination Figures 1 to 12 As shown, the specific operation and use process of the toilet door lock in this embodiment is as follows:

[0046] When the user needs to open the door to enter the toilet, the toilet door lock is in Figure 1 In the initial state shown, first, step down on the outer pedal 3, overcome the drive spring 6 and move the transmission pin 5 and the inner pedal 4 connected by the transmission shaft 8 downward. The transmission pin 5 moves downward and contacts the lower groove surface 28 of the spiral groove 27, thereby overcoming the transmission spring 38 to retract over the spiral groove 27, so that the drive shaft 2 does not rotate and remains stationary. At the same time, the outer pedal 3 drives the locking pin 20 to move downward and disengage from the positioning hole 21, releasing the rotation restriction on the drive shaft 2, and the square pin 14 at the end of the transmission shaft 8 remains plugged into the slot 16 of the control piston 9, so that the inner pedal 4 remains horizontal. When the outer pedal 3 moves downward until the control plate 10 contacts the push plate 12, the control plate 10 begins to push the control piston 9 to overcome the piston spring 15 through the contact between the control plate inclined surface 18 and the piston inclined surface 17. Figure 8 As shown in the figure, when the control plate 10 completely enters the outer pedal 3, the control piston 9 moves until the square pin 14 is disengaged from the slot 16, releasing the rotation restriction of the transmission shaft 8. The transmission shaft 8 starts to rotate with the inner pedal 4 under the action of the torsion spring 13, and the inner pedal 4 moves with the limit plate 19 to Figure 7As shown, the drive shaft 8 rotates counterclockwise around the drive shaft 8, so that the pedal plane 23 is in contact with the end of the limit column 11, and the slot 16 is staggered with the square pin 14 to keep the inner pedal 4 in a rotatable state. At this time, the outer pedal 3 is in the terminal position of downward movement, and the transmission pin 5 extends into the spiral groove 27 under the action of the transmission spring 38. Then, the foot is removed from the outer pedal 3, and the outer pedal 3 begins to move upward under the restoring force of the drive spring 6. The transmission pin 5 moves upward and abuts against the upper groove surface 29 of the spiral groove 27, thereby pushing the drive shaft 2 to start rotating. The drive shaft 2 drives the second connecting rod 31 to move in the direction close to the driving hinge 33 through the first connecting rod 30, thereby driving the driving hinge 33 to rotate relative to the lock body 1 through the third connecting rod 32, thereby causing the follower hinge 34 to rotate and the installation hinge 35 to bend, so that the door panel 7 starts to rotate and open. When the drive shaft 2 rotates 180 degrees, the first connecting rod 3 0 moves the second connecting rod 31 to the position farthest from the driving shaft 2, and then rotates the door panel 7 90 degrees to the maximum through the third connecting rod 32, the driving hinge 33, the follower hinge 34 and the installation hinge 35, so that the user can enter the toilet. At this time, the outer pedal 3 will continue to move upward under the restoring force of the driving spring 6, and continue to push the driving shaft 2 to rotate through the transmission pin 5, and start to drive the second connecting rod 31 to move in the direction away from the driving hinge 33 through the first connecting rod 30, and then the door panel 7 starts to rotate in the closing direction through the third connecting rod 32, the driving hinge 33, the follower hinge 34 and the installation hinge 35. When the outer pedal 3 moves upward to the initial position, that is, moves to the upward terminal position, the driving shaft 2 just rotates 180 degrees again, so that the door panel 7 rotates 90 degrees in the opposite direction and closes, and the first connecting rod 30, the second connecting rod 31, the third connecting rod 32, the driving hinge 33, the follower hinge 34 and the installation hinge 35 move and reset to Figure 2 In the position state shown, the locking pin 20 extends into the positioning hole 21 under the action of the locking spring 22 to form a rotation restriction on the drive shaft 2, so that the door panel 7 cannot be rotated to open. At the same time, during the upward movement of the outer pedal 3, the inner pedal 4 is synchronously moved upward through the transmission shaft 8, and under the action of the torsion spring 13, the transmission shaft 8 continues to rotate with the inner pedal 4, so that the limit plate 19 gradually rotates 90 degrees and the pedal arc surface 24 is rotated to the top of the limit column 11, thereby limiting the downward movement of the inner pedal 4, so that the user outside the door cannot move the outer pedal 3 downward. At this time, the transmission shaft 8 completes a 90-degree rotation and the slot 16 and the square pin 14 continue to maintain a staggered position relationship, so that the end of the control piston 9 remains in the position extending out of the outer pedal 3, which can then remind people outside that there is someone in the toilet, thereby completing the user's entry and automatic locking of the door panel 7.

[0047] When the toilet user wants to leave the toilet, first, he steps on the inner pedal 4 to overcome the force of the torsion spring 13, so that the inner pedal 4 moves around the transmission shaft 8. Figure 7Turn clockwise to the horizontal position, that is, turn to Figure 7 In the position shown, on the one hand, the transmission shaft 8 is rotated 90 degrees until the square pin 14 is aligned with the slot 16, and the control piston 9 moves in the opposite direction under the restoring force of the piston spring 15 to form a plug-in connection between the square pin 14 and the slot 16, thereby limiting the rotation of the transmission shaft 8 and keeping the inner pedal 4 in a horizontal position. On the other hand, the limit plate 19 is moved away from above the limit column 11 to release the restriction on the downward movement of the inner pedal 4. Then, the inner pedal 4 is stepped down, and the outer pedal 3 is driven by the transmission shaft 8 to overcome the drive spring 6 and move downward again, and the transmission pin 5 abuts against the lower groove surface 28 of the spiral groove 27 again, thereby overcoming the retraction of the transmission spring 38 over the spiral groove. Slot 27 keeps the drive shaft 2 stationary and does not rotate until the inner pedal 4 moves to the downward terminal position, and then the foot is removed from the inner pedal 4. At this time, the bottom surface of the inner pedal 4 is tightly attached to the limit column 11 and maintained at the same level, and the square pin 14 is extended into and maintained in the slot 16, so that the inner pedal 4 is maintained in a horizontal position. The inner pedal 4 and the outer pedal 3 move upward under the restoring force of the drive spring 6. As described above, the drive shaft 2 is pushed to rotate by the contact between the transmission pin 5 and the upper slot surface 29 until the inner pedal 4 and the outer pedal 3 move upward to the terminal position to complete the opening and closing of the door panel 7, so that the toilet user can walk out of the toilet.

Claims

1. A toilet door lock, characterized in that: The invention comprises a lock body, a driving shaft, an outer pedal, an inner pedal, a driving pin and a driving spring, wherein the lock body is arranged on the door panel, the driving shaft is arranged in the lock body for rotation in a vertical direction, the outer pedal is located on the outer side of the door panel, the inner pedal is located on the inner side of the door panel, the outer pedal is connected with the inner pedal and is slidably arranged on the lock body in a vertical direction, the driving pin is arranged on the outer pedal and is connected with the driving shaft; in the process that the outer pedal and the inner pedal reciprocate in the vertical direction relative to the lock body, the driving pin can be driven to drive the driving shaft to rotate so as to drive the door panel to open and close; the driving spring is connected with the inner pedal and can drive the inner pedal and the outer pedal to move upward to a terminal position relative to the lock body, so that the driving shaft drives the door panel to rotate to close; The outer circumferential surface of the driving shaft is provided with a spiral groove, and the driving pin is slidably connected to the outer pedal through a driving spring, and the driving spring drives the driving pin to extend into the spiral groove; the lower groove surface of the spiral groove is a downward inclined surface, and the upper groove surface of the spiral groove is a straight surface; the driving pin moves from top to bottom and can abut against the lower groove surface and overcome the retraction of the driving spring to pass over the lower groove surface, and the driving pin moves from bottom to top and can abut against the upper groove surface to push the driving shaft to rotate; The toilet door lock is also provided with a connecting rod assembly, a driving hinge, a follower hinge and an installation hinge; the connecting rod assembly is arranged in a horizontal direction, one end of which is eccentrically hinged to the driving shaft, and the other end is hinged to one end of the driving hinge; the driving hinge is rotatably arranged on the door panel, the other end of the driving hinge is hinged to one end of the follower hinge, the other end of the follower hinge is rotatably arranged on the door frame, and the installation hinge is installed between the door panel and the door frame; when the inner pedal and the outer pedal move from the downward moving terminal position to the upward moving terminal position, the driving shaft rotates 360 degrees in one direction to drive the door panel to complete one opening and closing.

2. The toilet door lock according to claim 1, characterized in that: The toilet door lock is also provided with a transmission shaft, a control piston, a control plate, a limit column and a push plate; the transmission shaft is arranged in the horizontal direction, one end of which is rotatably connected with the outer pedal through a torsion spring and is provided with a square pin extending in the horizontal direction, and the other end is fixedly connected with the inner pedal; the control piston is slidably arranged on the outer pedal in the horizontal direction through a piston spring, one end of the control piston is provided with a straight groove, the lower end of the straight groove is a piston inclined surface, and the piston inclined surface is connected with the straight groove; the transmission shaft can overcome the torsion spring and rotate until the square pin is aligned with the straight groove, so as to form the insertion of the straight groove and the square pin to limit the rotation of the transmission shaft; the control plate is slidably arranged at the bottom of the outer pedal in the vertical direction, and the upper end of the control plate is provided with a control plate inclined surface, The inclined surface of the control plate can abut against the inclined surface of the piston to drive the control piston to overcome the piston spring and move to disengage from the plug-in with the square pin; a limit plate is provided on the inner pedal, and when the square pin is plugged into the slot, the inner pedal remains in a horizontal state, and when the square pin is disengaged from the slot, the torsion spring drives the inner pedal to drive the limit plate to rotate downward; the push plate is arranged on the outside of the lock body and below the control plate, and can abut against the control plate moved downward to the terminal position to drive the control plate to push the control piston to move; the limit column is located on the inside of the lock body and below the inner pedal, and the limit column can abut against the limit plate after rotating downward to limit the downward movement of the inner pedal.

3. The toilet door lock according to claim 2, characterized in that: The toilet door lock is also provided with a locking pin; the locking pin is arranged upward on the top of the outer pedal, and a positioning hole is provided on the drive shaft; when the outer pedal moves upward to the terminal position, the locking pin is inserted into the positioning hole to limit the rotation of the drive shaft relative to the lock body.

4. The toilet door lock according to claim 3, characterized in that: The locking pin is connected to the outer pedal via a locking spring, and the locking pin is driven to extend by the locking spring.

5. The toilet door lock according to claim 2, characterized in that: The limit plate includes a pedal plane and a pedal arc surface. Driven by the torsion spring, the pedal plane first abuts against the end of the limit column. As the inner pedal moves upward to the terminal position, the limit plate gradually rotates until the pedal arc surface is located above the limit column.

6. The toilet door lock according to claim 2, characterized in that: The outer pedal is provided with a pedal pin, and the control board is provided with a control board slot along the vertical direction; the pedal pin is slidably connected with the control board slot.

7. The toilet door lock according to claim 2, characterized in that: The control piston can overcome the movement of the piston spring, so that the other end of the control piston extends out of the outer pedal in a horizontal direction.

8. The toilet door lock according to any one of claims 1 to 7, characterized in that: The connecting rod assembly is composed of a plurality of connecting rods hinged in sequence and is slidably arranged on the lock body.

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