Ticket checking gate machine capable of automatically and quickly recycling IC cards and tickets

Abstract

The utility model relates to the technical field of ticket checking gates, in particular to a ticket checking gate capable of automatically and quickly recovering IC cards and tickets. A transmission device and an IC card ticket objective table are arranged in the ticket recycling cylinder; the IC card ticket objective table is installed on the transmission device and can move in the axial direction of the ticket recycling cylinder through the transmission device so as to adjust the distance between the IC card ticket objective table and an inlet in the upper end of the ticket recycling cylinder, and the transmission device is electrically connected with the controller. By means of the mode, the distance between the IC card ticket objective table and the inlet in the upper end of the ticket recycling cylinder can be adjusted, so that in the actual use process, the height difference can be changed and adjusted to be within a proper range, the randomness of falling of IC cards and tickets is effectively reduced, and then the purpose of tidy stacking is achieved; and the position of the IC card ticket objective table is adjustable, so that the utilization rate of the internal space of the recycling ticket cylinder is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ticket checking gates, in particular to a ticket checking gate for automatically and quickly recycling IC card tickets. Background Art

[0002] With the increase of urban population and the expansion of transportation networks, the modern urban transportation system has an urgent need for efficient, convenient and safe ticket management. The traditional ticket management methods can no longer meet the rapid development of modern urban transportation. Therefore, by using advanced computer technology, intelligent recognition technology, electronic payment technology and other means, the development of ticket checking gates with IC card ticket recycling has become an important development direction of the urban transportation system.

[0003] For the existing ticket checking gates, in order to meet the large-scale recycling of IC card tickets, the recycling ticket cylinder used to load IC card tickets needs to be designed as large as possible. For example, the recycling ticket cylinder usually adopts an extended design. However, in the actual use process, due to the large height difference, the randomness of IC card ticket dropping increases, making it difficult to stack neatly, which greatly reduces the utilization rate of the internal space of the recycling ticket cylinder. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a ticket checking gate for automatically and quickly recycling IC card tickets.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A ticket checking gate for automatically and quickly recycling IC card tickets, including an IC card ticket recycling mechanism. The IC card ticket recycling mechanism includes a controller and a vertically arranged recycling ticket cylinder. The recycling ticket cylinder is connected to the card feeding mechanism, and a transmission device and an IC card ticket carrier are arranged in the recycling ticket cylinder. The IC card ticket carrier is installed on the transmission device and can move along the axial direction of the recycling ticket cylinder through the transmission device to adjust the distance between the IC card ticket carrier and the upper end entrance of the recycling ticket cylinder. The transmission device is electrically connected to the controller.

[0007] Further, a sensor is arranged at the upper end entrance position of the recycling ticket cylinder, and the sensor is electrically connected to the controller.

[0008] Further, a first in-place switch and a second in-place switch are also arranged in the recycling ticket cylinder. The first in-place switch is arranged corresponding to the top position of the recycling ticket cylinder, and the second in-place switch is arranged corresponding to the bottom position of the recycling ticket cylinder. The first in-place switch and the second in-place switch are respectively electrically connected to the controller.

[0009] Further, the card feeding mechanism includes a card feeding support, and an insertion card slot opening is arranged at the horizontal end of the card feeding support.

[0010] The card insertion support is provided with a card insertion channel, a DC motor and a motor drive board. The card slot opening is communicated with the card insertion channel. The conveyor belt of the DC motor is located on the card insertion channel and is electrically connected to the motor drive board. The motor drive board is electrically connected to the controller. The card insertion support is further provided with a card reader located above the card insertion channel and electrically connected to the controller.

[0011] Furthermore, an entrance sensor is provided inside the card slot opening. The card insertion support is provided with a first sensor and a second sensor, and the first sensor and the second sensor are respectively located on both sides of the card reader in the conveying direction of the conveyor belt. The entrance sensor, the first sensor and the second sensor are respectively electrically connected to the controller.

[0012] Furthermore, the number of the ticket recycling cartridges is more than two. The upper entrances of the more than two ticket recycling cartridges are located below the exit opening of the card insertion channel. The exit opening of the card insertion channel is provided with an electromagnet electrically connected to the controller, and the electromagnet is connected to a baffle provided at the upper entrance of the ticket recycling cartridge to control the recycling switching of the more than two ticket recycling cartridges.

[0013] Furthermore, a setting input device is further included, and the setting input device is electrically connected to the controller.

[0014] Furthermore, an alarm device is further included, and the alarm device is electrically connected to the controller.

[0015] Furthermore, a turnstile main body and a turnstile disc installed on the turnstile main body are further included. The IC card ticket recycling mechanism is located at the entrance end of the turnstile main body, and the turnstile disc is located at the middle position of the turnstile main body.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The ticket checking turnstile for automatically and quickly recycling IC cards provided by the present utility model is provided with a transmission device and an IC card ticket loading platform inside the ticket recycling cartridge. The IC card ticket loading platform is installed on the transmission device and can move along the axial direction of the ticket recycling cartridge through the transmission device to adjust the distance between the IC card ticket loading platform and the upper entrance of the ticket recycling cartridge. The transmission device is electrically connected to the controller. By the above method, the distance between the IC card ticket loading platform and the upper entrance of the ticket recycling cartridge can be adjusted, so that in actual use, the height difference can be changed and adjusted to a suitable range, thereby effectively reducing the randomness of IC card ticket dropping, and further achieving the purpose of stacking neatly. And because the position of the IC card ticket loading platform is adjustable, the internal space utilization rate of the ticket recycling cartridge is ensured not to be affected. Applying the IC card ticket recycling mechanism to the ticket checking turnstile enables the ticket checking turnstile to have the function of recycling IC cards, and at the same time makes the IC cards stack neatly without affecting the internal space utilization rate of the ticket recycling cartridge. Description of the Drawings

[0018] Figure 1 The front view of a ticket checking gate for automatically and quickly recycling IC card tickets according to the present utility model is shown;

[0019] Figure 2 The top view of a ticket checking gate for automatically and quickly recycling IC card tickets according to the present utility model is shown;

[0020] Figure 3 The side view of a ticket checking gate for automatically and quickly recycling IC card tickets according to the present utility model is shown;

[0021] Figure 4 The structural schematic diagram of the IC card ticket recycling mechanism according to the present utility model is shown;

[0022] Figure 5 The structural schematic diagram of the IC card ticket recycling mechanism without the outer shell of the ticket recycling cylinder according to the present utility model is shown;

[0023] Figure 6 Shown is Figure 5 the front view of

[0024] Figure 7 Shown is Figure 5 the side view of

[0025] Figure 8 The structural schematic diagram of the card feeding mechanism of the IC card ticket recycling mechanism according to the present utility model from one angle is shown;

[0026] Figure 9 The structural schematic diagram of the card feeding mechanism of the IC card ticket recycling mechanism according to the present utility model from another angle is shown;

[0027] Figure 10 Shown is Figure 8 the top view of

[0028] Explanation of the reference numerals in the attached drawings:

[0029] 1 - Gate main body; 11 - Gate disc; 12 - IC card ticket recycling mechanism; 121 - Ticket recycling cylinder; 122 - Transmission device; 123 - IC card ticket carrier; 124 - First in - place switch; 125 - Second in - place switch; 13 - Card feeding mechanism; 131 - Card insertion slot opening; 132 - DC motor; 133 - First sensor; 134 - Second sensor; 14 - Card reader; 15 - First sensor; 16 - Second sensor. Specific embodiments

[0030] The following further describes the present utility model in conjunction with the attached drawings and specific embodiments as follows:

[0031] As Figures 1 - 10As shown in the figure, the utility model provides a ticket checking gate for automatically and quickly recycling IC card tickets, which includes an IC card ticket recycling mechanism. The IC card ticket recycling mechanism includes a controller and a vertically arranged recycling ticket cylinder. The recycling ticket cylinder is connected to the card feeding mechanism, and a transmission device and an IC card ticket carrier are arranged in the recycling ticket cylinder. The IC card ticket carrier is installed on the transmission device and can move along the axial direction of the recycling ticket cylinder through the transmission device to adjust the distance between the IC card ticket carrier and the upper end entrance of the recycling ticket cylinder. The transmission device is electrically connected to the controller.

[0032] As can be seen from the above description, the utility model has the following beneficial effects:

[0033] The ticket checking gate for automatically and quickly recycling IC card tickets provided by the utility model is provided with a transmission device and an IC card ticket carrier in the recycling ticket cylinder. The IC card ticket carrier is installed on the transmission device and can move along the axial direction of the recycling ticket cylinder through the transmission device to adjust the distance between the IC card ticket carrier and the upper end entrance of the recycling ticket cylinder. The transmission device is electrically connected to the controller. By the above method, the distance between the IC card ticket carrier and the upper end entrance of the recycling ticket cylinder can be adjusted, so that in actual use, the height drop can be changed, and the height drop can be adjusted to a suitable range, thereby effectively reducing the randomness of IC card ticket dropping, and further achieving the purpose of neat stacking. And because the position of the IC card ticket carrier is adjustable, the internal space utilization rate of the recycling ticket cylinder is ensured not to be affected.

[0034] Furthermore, a sensor is arranged at the position of the upper end entrance of the recycling ticket cylinder, and the sensor is electrically connected to the controller.

[0035] As can be seen from the above description, the sensor can be used to detect the position of the top layer of the IC card ticket carrier, that is, it is not used to detect the position of the IC card ticket carrier. That is to say, if there are already some IC card tickets stacked on the IC card ticket carrier, the sensor will detect the topmost IC card ticket among the stacked IC card tickets. When the sensor detects the topmost IC card ticket, this position is used as the initial position, and the initial position is adjusted according to the preset adjustment distance to obtain the final position. For example, if the preset adjustment distance is the thickness of 10 IC card tickets, then when the topmost IC card ticket is at the initial position, the position of the IC card ticket carrier is obtained. At this time, the position of the IC card ticket carrier is adjusted downward by the thickness distance of 10 IC card tickets, so that the distance between the topmost IC card ticket and the upper end entrance of the recycling ticket cylinder is the thickness distance of 10 IC card tickets.

[0036] Further, a first in-place switch and a second in-place switch are also provided inside the ticket collection cartridge. The first in-place switch is arranged corresponding to the top position of the ticket collection cartridge, and the second in-place switch is arranged corresponding to the bottom position of the ticket collection cartridge. The first in-place switch and the second in-place switch are respectively electrically connected to the controller.

[0037] As can be seen from the above description, by arranging the first in-place switch at the top position and the second in-place switch at the bottom position of the ticket collection cartridge, it is used to determine whether the ticket collection cartridge is installed in place. Only when it is installed in place can the card be collected normally, thus ensuring the stability of card collection.

[0038] Further, the card feeding mechanism includes a card feeding support. An insertion card slot opening is provided at the horizontal end of the card feeding support.

[0039] A card feeding channel, a DC motor, and a motor drive board are provided inside the card feeding support. The insertion card slot opening is communicated with the card feeding channel. The conveyor belt of the DC motor is located on the card feeding channel and is electrically connected to the motor drive board. The motor drive board is electrically connected to the controller. A card reader is also provided on the card feeding support above the card feeding channel and is electrically connected to the controller.

[0040] As can be seen from the above description, through the above structure, the IC card ticket enters from the insertion card slot opening. The motor drive board controls the drive of the DC motor, and the DC motor drives its conveyor belt to move, so that the IC card ticket moves in the card feeding channel and is conveyed to the card reader for card reading operation to obtain relevant data of the IC card ticket.

[0041] Further, an entrance sensor is provided inside the insertion card slot opening. A first sensor and a second sensor are provided inside the card feeding support. The first sensor and the second sensor are respectively located on both sides of the card reader corresponding to the conveying direction of the conveyor belt. The entrance sensor, the first sensor, and the second sensor are respectively electrically connected to the controller.

[0042] Further, the number of the ticket collection cartridges is two or more. The upper entrances of the two or more ticket collection cartridges are located below the outlet of the card feeding channel. An electromagnet electrically connected to the controller is provided at the outlet of the card feeding channel. The electromagnet is connected to a baffle provided at the upper entrance of the ticket collection cartridge to control the recycling switch of the two or more ticket collection cartridges.

[0043] As can be seen from the above description, through the above structure, the approximate position of the IC card ticket in the card insertion channel can be obtained. When the entrance sensor detects that there is a card at the entrance of the card slot, the controller prompts the DC motor to operate through the motor drive board, transmits the card to the card reading area of the card reader, and judges whether it reaches the card reading area through the first sensor and the second sensor. After the card reader recognizes the card, it feeds back to the controller, and the controller controls the position where the card is to be transmitted, whether to exit or be recycled into the ticket cylinder. If the card is to exit, the DC motor just reverses directly, and the entrance sensor is used to judge the completion of the exit; if the card is to enter the next ticket cylinder, the DC motor just rotates forward directly, and the sensor on the next ticket cylinder is used to judge that it has entered the next ticket cylinder; if the card is to enter the ticket cylinder, the DC motor first reverses, runs to the entrance through the entrance sensor and then stops. At this time, the electromagnet acts, and the DC motor rotates forward to make the card enter the ticket cylinder.

[0044] Further, an input device is further included, and the input device is electrically connected to the controller.

[0045] As can be seen from the above description, by setting the input device, data, parameters, etc. in the controller can be set.

[0046] Further, an alarm device is further included, and the alarm device is electrically connected to the controller.

[0047] As can be seen from the above description, by setting the alarm device, when the ticket cylinder is full, the alarm device is triggered to remind the staff to change the ticket cylinder; when the ticket cylinder is not in place, the alarm device is also triggered to remind the staff to adjust.

[0048] Further, a turnstile main body and a turnstile disc installed on the turnstile main body are further included. The IC card ticket recycling mechanism is located at the entrance end of the turnstile main body, and the turnstile disc is located at the middle position of the turnstile main body.

[0049] As can be seen from the above description, applying the IC card ticket recycling mechanism to the ticket checking turnstile enables the ticket checking turnstile to have the IC card ticket recycling function, and at the same time makes the IC card tickets stacked neatly without affecting the internal space utilization rate of the recycling ticket cylinder.

[0050] The following lists several preferred embodiments or application embodiments to help those skilled in the art better understand the technical content of the present invention and the technical contributions made by the present invention compared with the prior art:

[0051] Preferred Embodiment 1:

[0052] As Figures 1 to 10 shown, a ticket checking turnstile for automatically and quickly recycling IC card tickets provided by the present invention adopts a double-door structure, enabling the card insertion mechanism and the IC card ticket recycling mechanism to be more conveniently installed.

[0053] The above ticket gate includes a gate main body 1, a gate disc 11 and an IC card ticket recycling mechanism 12 respectively installed on the gate main body 1. The IC card ticket recycling mechanism is located at the entrance end of the gate main body, and the gate disc is located in the middle of the gate main body.

[0054] An IC card feeding mechanism 13 is further provided at the entrance end of the gate main body 1. The IC card feeding mechanism 13 includes a feeding support. An insertion card slot 131 is provided at the horizontal end of the feeding support; an entrance sensor is provided inside the insertion card slot.

[0055] A card feeding channel, a DC motor 132, a motor drive board, a first sensor 133 and a second sensor 134 are provided inside the feeding support. The insertion card slot 131 is communicated with the card feeding channel. The conveyor belt of the DC motor 132 is located on the card feeding channel and is electrically connected to the motor drive board. The motor drive board is electrically connected to the controller; a card reader 14 is further provided on the feeding support above the card feeding channel and is electrically connected to the controller. The first sensor 15 and the second sensor 16 are respectively located on both sides of the card reader 14 corresponding to the conveying direction of the conveyor belt; the entrance sensor, the first sensor and the second sensor are respectively electrically connected to the controller for judging the position of the card for more precise control.

[0056] The IC card ticket enters from the insertion card slot. The motor drive board controls the drive of the DC motor. The DC motor drives its conveyor belt to move, so that the IC card ticket moves in the card feeding channel and is conveyed to the card reader for card reading operation to obtain relevant data of the IC card ticket.

[0057] The IC card ticket recycling mechanism 12 includes a controller and a vertically arranged recycling ticket cylinder 121. The recycling ticket cylinder 121 is connected to the card feeding mechanism 13, and a transmission device 122 and an IC card ticket carrier 123 are provided inside the recycling ticket cylinder 121; the IC card ticket carrier is installed on the transmission device and can move along the axial direction of the recycling ticket cylinder through the transmission device to adjust the distance between the IC card ticket carrier and the upper entrance of the recycling ticket cylinder. The transmission device is electrically connected to the controller.

[0058] Specifically, more than one recycling ticket cylinder 121 is connected to the bottom of the feeding support. The entrance of the recycling ticket cylinder 121 is located below the outlet of the card feeding channel, and various types of cards can be recycled, or multiple recycling ticket cylinders recycle the same type of card. When one recycling ticket cylinder is full, it switches to another recycling ticket cylinder.

[0059] A sensor is provided at the upper entrance position of the recycling ticket cylinder 121, and the sensor is electrically connected to the controller. The sensor is used to detect the position of the top layer of the IC card ticket carrier, that is, it is not used to detect the position of the IC card ticket carrier. That is to say, if there are some IC cards stacked on the IC card ticket carrier, the sensor detects the topmost IC card among the stacked IC cards. When the sensor detects the topmost IC card, this position is used as the initial position, and the initial position is adjusted according to the preset adjustment distance to obtain the final position. For example, if the preset adjustment distance is the thickness of 10 IC cards, when the topmost IC card is at the initial position, the position of the IC card ticket carrier is obtained, and at this time, the position of the IC card ticket carrier is adjusted downward by the thickness distance of 10 IC cards, so that the distance between the topmost IC card and the upper entrance of the recycling ticket cylinder is the thickness distance of 10 IC cards.

[0060] When the machine is turned on, the tray (i.e., the IC card ticket carrier) in the recycling ticket cylinder is recognized and fed back to the controller by the sensor, so as to control the conveying device to adjust the position of the tray, so that the recycling ticket cylinder is just enough to recycle 10 card positions. Of course, other corresponding ticket thicknesses can also be set, such as the thickness corresponding to 5 cards, the thickness corresponding to 8 cards, etc.; after the recycling ticket cylinder recycles 10 cards, the controller controls the conveying device to lower the tray to just enough to recycle 10 card positions, and so on, in order to reduce the falling height of the tickets and make the stacking neater. The thickness distance corresponding to 10 tickets is mainly considered for the balance between the height difference and the conveying device. If the height difference is smaller, of course, it can ensure neater stacking, but the conveying device needs to be adjusted multiple times with a higher frequency; if the height difference is larger, it is more difficult to stack neatly. Through a large number of experiments, setting the thickness distance corresponding to 10 cards can roughly meet the balance between the height difference and the conveying device.

[0061] A first in-place switch 124 and a second in-place switch 125 are further provided in the recycling ticket cylinder 121. The first in-place switch 124 is provided corresponding to the top position of the recycling ticket cylinder 121, and the second in-place switch 125 is provided corresponding to the bottom position of the recycling ticket cylinder 121. The first in-place switch 124 and the second in-place switch 125 are respectively electrically connected to the controller. By providing the first in-place switch at the top position and the second in-place switch at the bottom position of the recycling ticket cylinder, it is used to judge whether the recycling ticket cylinder is installed in place. Only when it is installed in place can the cards be normally collected, thus ensuring the stability of card collection.

[0062] The number of the recycling ticket cylinders 121 is more than two. The upper entrances of the more than two recycling ticket cylinders 121 are located below the card outlet of the card feeding channel. An electromagnet electrically connected to the controller is provided at the card outlet of the card feeding channel. The electromagnet is connected to a baffle provided at the upper entrance of the recycling ticket cylinder to control the recycling switching of the more than two recycling ticket cylinders. Through the above structure, the approximate position of the IC card ticket in the card feeding channel can be obtained. When the entrance sensor detects that there is a card at the entrance of the card insertion slot, the controller prompts the DC motor to operate through the motor driving board, and conveys the card to the card reading area of the card reader. The first sensor and the second sensor are used to judge whether the card reaches the card reading area. After the card reader recognizes the card, it feeds back to the controller, and the controller controls the position where the card is to be conveyed, whether to exit or be recycled into the ticket cylinder. If the card is to exit, the DC motor just rotates reversely directly, and the entrance sensor is used to judge the completion of the exit; if the card is to enter the next ticket cylinder, the DC motor just rotates forward directly, and the sensor on the next ticket cylinder is used to judge that the card has entered the next ticket cylinder; if the card is to enter the ticket cylinder, the DC motor first rotates reversely, runs to the entrance through the entrance sensor and then stops. At this time, the electromagnet acts, and the DC motor rotates forward to make the card enter the ticket cylinder. Using one DC motor to control the whole process of card collection reduces logical judgment and is convenient for maintenance. Using one electromagnet to pull the baffle to control the card to be recycled into the recycling ticket cylinder reduces the volume of the whole recycling mechanism.

[0063] The above ticket checking gate for automatically and quickly recycling IC card tickets further includes a setting input device and an alarm device, and the setting input device and the alarm device are respectively electrically connected to the controller. By providing the setting input device, data, parameters, etc. in the controller can be set. By providing the alarm device, when the ticket cylinder is full, the alarm device is triggered to remind the staff to change the ticket cylinder; when the card in the ticket cylinder is not in place, the alarm device is also triggered to remind the staff to adjust.

[0064] The present utility model has been described by the above related embodiments and drawings. However, the above embodiments are only examples for implementing the present utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present utility model. On the contrary, modifications and equivalent settings included in the spirit and scope of the claims are all included in the scope of the present utility model.

Claims

1. A ticket gate for automatically and quickly recovering IC card tickets, characterized in that: It comprises an IC card ticket recovery mechanism, which comprises a controller and a vertically arranged ticket recovery tube, wherein the ticket recovery tube is connected to a card feeding mechanism and a transmission device and an IC card ticket loading platform are arranged inside the ticket recovery tube; the IC card ticket loading platform is mounted on the transmission device and can be moved axially along the ticket recovery tube through the transmission device to adjust the distance between the IC card ticket loading platform and the upper end entrance of the ticket recovery tube, and the transmission device is electrically connected to the controller.

2. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: A sensor is provided at the upper entrance position of the ticket recovery tube, and the sensor is electrically connected to the controller.

3. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: The ticket collection tube is also provided with a first position switch and a second position switch. The first position switch is arranged corresponding to the top position of the ticket collection tube, and the second position switch is arranged corresponding to the bottom position of the ticket collection tube. The first position switch and the second position switch are electrically connected to the controller respectively.

4. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: The card feeding mechanism comprises a card feeding support, and a card insertion slot is provided on a horizontal end of the card feeding support; A card entry channel, a DC motor and a motor drive board are provided in the card entry support, the card insertion slot is connected to the card entry channel, the conveyor belt of the DC motor is located on the card entry channel and is electrically connected to the motor drive board, and the motor drive board is electrically connected to the controller; the card entry support is also provided with a card reader located above the card entry channel and electrically connected to the controller.

5. The ticket gate for automatically and quickly recovering IC card tickets according to claim 4, characterized in that: An entrance sensor is provided on the inner side of the card insertion slot; a first sensor and a second sensor are provided in the card input support, and the first sensor and the second sensor are respectively located on both sides of the conveying direction of the conveyor belt corresponding to the card reader; the entrance sensor, the first sensor and the second sensor are respectively electrically connected to the controller.

6. The ticket gate for automatically and quickly recovering IC card tickets according to claim 4, characterized in that: The number of the ticket recovery barrels is more than two, and the upper entrances of the more than two ticket recovery barrels are located below the card outlet of the card input channel. The card outlet of the card input channel is provided with an electromagnet electrically connected to the controller, and the electromagnet is connected to a baffle provided at the upper entrance of the ticket recovery barrel to control the recovery switching of the more than two ticket recovery barrels.

7. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: It also includes a setting input device, which is electrically connected to the controller.

8. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: It also includes an alarm device, which is electrically connected to the controller.

9. The ticket gate for automatically and quickly recovering IC card tickets according to claim 1, characterized in that: It also includes a gate body and a gate disc installed on the gate body, the IC card ticket recovery mechanism is located at the entrance end of the gate body, and the gate disc is located in the middle of the gate body.

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