Detection device for retail cabinet

Abstract

The utility model relates to a detection device for a retail cabinet, which is used for detecting the state of a spring bolt in a lock of the retail cabinet, and comprises a shell; the metal rod is arranged in the shell in a transverse moving mode and used for being connected with the tail of the spring bolt; the PCB is detachably connected to the shell; the feedback assembly comprises a groove body and an infrared correlation probe and is arranged on one side of the PCB, the cross section of the groove body is in a U shape, assembling cavities are formed in the two opposite side walls of the groove body, and the receiving end and the transmitting end of the infrared correlation probe are arranged in the two assembling cavities respectively and symmetrically distributed on the two sides of the metal rod. According to the detection device for the retail cabinet, the infrared correlation probe is adopted to detect the metal rod and feed back the motion state of the spring bolt, so that wrong detection caused by oxide or dust is avoided, and the detection stability and accuracy are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of retail cabinets, in particular to a detection device used for retail cabinets. Background Art

[0002] Smart retail cabinets, also known as unmanned retail cabinets, use mobile phones to scan codes to open the door, and then use cameras installed on the cabinet to identify the goods taken by the user, and close the door to automatically pay.

[0003] In the prior art, since the door of the retail cabinet is opened and locked by scanning a code on a mobile phone and closed automatically for payment, it is necessary to detect the closed state of the lock in the cabinet door, and a detector is required for the lock tongue of the retail cabinet lock. The detector detects the extension and retraction state of the lock tongue to determine the locking state of the lock, such as Figure 1 The figure shows a schematic diagram of the prior art detector, which includes a metal shell 100, a metal contact 200 is arranged on the front side of the metal shell 100, and a metal disc 300 is used to connect to the tail of the lock tongue. When the lock tongue is extended and retracted, the connection and disconnection of the metal disc 300 and the metal contact 200 are used to realize the state feedback of the lock tongue.

[0004] In the above-mentioned prior art, the metal contact contact technology is adopted. Although the cost is low, oxides will be generated between the metal disc and the metal contact under the interference of moisture or oxygen. When there are some oxides or dust between the metal disc and the metal contact, the contact will fail and the circuit will not be connected. This will affect the accuracy of the feedback. Therefore, a detection device for a retail cabinet is proposed. Utility Model Content

[0005] Based on the above description, the utility model provides a detection device for a retail cabinet, which solves the technical problem that the detector used for feedback of existing retail cabinet locks may cause inaccurate feedback due to interference such as oxides or dust.

[0006] The utility model solves the above technical problems with the following technical solutions: A detection device for a retail cabinet, used to detect the state of a lock tongue in a retail cabinet lock, comprising:

[0007] case;

[0008] A metal rod, which is laterally movable and disposed in the housing and is used to connect with the tail of the locking tongue;

[0009] A PCB board, which is detachably connected to the housing;

[0010] A feedback component, comprising a slot and an infrared probe, and arranged on one side of a PCB board, wherein the slot has a U-shaped cross section, and assembly cavities are provided at two opposite side walls of the slot, and a receiving end and a transmitting end of the infrared probe are respectively arranged in two groups of assembly cavities and symmetrically distributed on both sides of the metal rod;

[0011] During the extension and retraction of the lock tongue, the infrared probe detects the extension and retraction of the metal rod and provides feedback on the extension and retraction status of the lock tongue.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the slot body is a non-conductive insulating object to avoid electrical conduction between the infrared radiation probe and the shell.

[0014] Furthermore, the tank body is made of one of plastics, polyethylene or polypropylene.

[0015] Furthermore, a stabilizing component is also included, and the stabilizing component includes a positioning bar arranged on the front side of the shell, and the positioning bar is in contact with the groove body.

[0016] Furthermore, the stabilizing component also includes two groups of expansion strips arranged at the bottom of the positioning strip, and at least one group of spring plates are arranged on the opposite sides of the two groups of expansion strips, and the spring plates abut against the inner wall of the groove body to limit the movement of the groove body.

[0017] Furthermore, there is a lateral spacing between the disc end surface of the metal rod and the detection point of the infrared radiation probe, and the lateral spacing is 1 mm. An indicator light is provided on the PCB board for displaying the feedback status.

[0018] Furthermore, an extension plate is integrally connected to the shell, a groove is formed on the extension plate, and the PCB board is arranged in the groove.

[0019] Furthermore, the inner edge of the groove has an inclined surface extending toward the outer edge of the extension plate, so as to reduce the wear between the PCB board and the groove during assembly.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0021] 1. The detection device for retail cabinets uses an infrared probe to detect the metal rod and feedback the movement status of the lock tongue. In this way, false detection will not be caused by oxides or dust, which greatly improves the stability and accuracy of the detection.

[0022] 2. For the detection device used in retail cabinets, the metal rod needs to be lifted more than 1mm before it is considered unlocked. This will greatly reduce false detections caused by vibration or aging of the motion mechanism and improve the fault tolerance rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the prior art;

[0024] Figure 2 A schematic diagram of the structure of a detection device for a retail cabinet provided by an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure when the metal rod is extended in the embodiment of the utility model;

[0026] Figure 4 is a schematic structural diagram of body 1 from another perspective;

[0027] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure of area A in the middle.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Shell; 11. Extension plate; 12. Groove; 13. Inclined surface; 100. Metal shell; 2. Metal rod; 200. Metal contact; 3. PCB board; 300. Metal disc; 4. Feedback component; 41. Slot body; 42. Infrared probe; 5. Stabilizing component; 51. Positioning bar; 52. Extension bar; 53. Shrapnel; 6. Indicator light. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] like Figure 2-5 As shown, a detection device for a retail cabinet in this embodiment is used to detect the state of a lock tongue in a retail cabinet lock, including a shell 1 and a metal rod 2, wherein the metal rod 2 is laterally movable in the shell 1, and the shell 1 is used to set a coil and a spring, and the coil and the spring are not shown in the figure. When the coil is energized, the movement of the metal rod 2 will drive the lock tongue to retract, and when no power is supplied, it will reset under the influence of the spring. This is a prior art and will not be elaborated here.

[0032] As the application technology of this scheme, photoelectric technology is adopted. The detection device for the retail cabinet also includes a PCB board 3 and a feedback component 4, wherein the PCB board 3 has two sets of wiring, one set of wiring is used to electrically connect with the coil in the shell 1, and the other set of wiring is used to electrically connect with the controller of the retail cabinet. The controller of the retail cabinet is not shown. In addition, the PCB board 3 can be detachably connected to the shell 1, and is preferably fixed to the shell 1 by bolts.

[0033] As for the feedback component 4, it includes a slot body 41 and an infrared radio probe 42, and is arranged on one side of the PCB board 3, wherein the cross-section of the slot body 41 is U-shaped, that is, the slot body 41 has three sides, and there are two groups of side edges arranged oppositely, and assembly cavities are opened at the two opposite side walls of the slot body 41. The receiving end and the transmitting end of the infrared radio probe 42 are respectively arranged in the two groups of assembly cavities and symmetrically distributed on both sides of the metal rod 2. The receiving end and the transmitting end of the infrared radio probe 42 are flush with the horizontal plane of the metal rod 2, so that the metal rod 2 can be detected by the infrared radio probe 42 during lateral movement.

[0034] It should be noted that the pins of the receiving end and the transmitting end of the infrared probe 42 are connected to the PCB board 3, so that the infrared probe 42 is controlled by the PCB board 3, reducing wiring.

[0035] In addition, as the key point of the solution, the implementation is specific, considering the existing contact-type on-off technology applications, such as Figure 1 As shown, when the metal disc 300 contacts the metal contact 200, the metal contact 200 will form a current path with the metal shell 100, and when the metal shell 100 is fixed on the metal frame of the retail cabinet, it will form a circuit connection with the controller of the retail cabinet. This is not conducive to the stable operation of the control circuit and there is a risk of damage. Therefore, in this application, the slot body 41 is a non-conductive insulating object, so as to avoid the conductive phenomenon between the infrared radiation probe 42 and the shell 1, so it will not affect the stable operation of the control circuit of the controller of the actual retail cabinet. The controller is not shown.

[0036] It is understandable that the slot body 41 is made of one of plastic, polyethylene or polypropylene, and has good insulation properties, ensuring insulation and ensuring that no electrical conduction occurs between the infrared radiation probe 42 and the housing 1 .

[0037] In this way, during the extension and retraction of the lock tongue, since the receiving end and the transmitting end of the infrared probe 42 are flush with the horizontal plane of the metal rod 2, the infrared probe 42 can feedback the extension and retraction state of the lock tongue by detecting the extension and retraction of the metal rod 2. Moreover, since the contact-type on-off technology is not adopted, false detection due to oxides or dust will not occur, thereby greatly improving the stability and accuracy of the detection.

[0038] In addition, an indicator light 6 is provided on the PCB board 3 for displaying the feedback status.

[0039] To facilitate the assembly of the PCB board 3, an extension plate 11 is integrally connected to the shell 1, and a groove 12 is provided on the extension plate 11. The PCB board 3 is arranged in the groove 12. The design of the groove 12 provides a positioning reference, and is restricted by the side wall of the groove 12 to limit the movement of the PCB board 3, thereby facilitating the assembly of the PCB board 3.

[0040] Furthermore, in order to reduce collisions and alleviate the degree of wear on the PCB board 3, the inner edge of the groove 12 has a slope 13 extending toward the outer edge of the extension plate 11. Since the upper opening of the groove 12 has a larger diameter, the PCB board 3 is not prone to collision during assembly, thereby reducing the wear between the PCB board 3 and the groove 12 during assembly.

[0041] It should also be noted that there is a lateral spacing between the disc end surface of the metal rod 2 and the detection point of the infrared radiation probe 42. The lateral spacing is, for example, 1 mm. Therefore, only when the metal rod 2 is lifted more than 1 mm will it be considered unlocked. This will greatly reduce false detections caused by vibration or aging of the motion mechanism and improve the fault tolerance rate.

[0042] In one embodiment, in order to ensure that the pins of the receiving end and the transmitting end of the infrared probe 42 are not easily disconnected from the PCB board 3, as shown in FIG. Figure 2-5 As shown, the detection device for the retail cabinet further includes a stabilizing component 5 , which includes a positioning bar 51 arranged on the front side of the housing 1 , and the positioning bar 51 is in contact with the groove 41 .

[0043] It should be noted that the cross-sectional length of the positioning strip 51 is equal to the distance between the two opposite side walls of the slot body 41 , which limits the left and right shaking of the slot body 41 and can provide a positioning reference when the slot body 41 is assembled.

[0044] In a further implementation, the stabilizing component 5 further includes two groups of expansion strips 52 arranged at the bottom of the positioning strip 51 , and at least one group of spring plates 53 are arranged on opposite sides of the two groups of expansion strips 52 , and the spring plates 53 abut against the inner wall of the slot body 41 to limit the movement of the slot body 41 .

[0045] After the slot body 41 is assembled, the spring piece 53 abuts against the inner wall of the slot body 41 to generate a clamping force from the inside to the outside. In this way, the up and down shaking of the slot body 41 will be limited, thereby ensuring that the pins of the receiving end and the transmitting end of the infrared probe 42 are not easily disconnected from the PCB board 3.

[0046] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A detection device for a retail cabinet, used for detecting the state of a lock tongue in a retail cabinet lock, characterized in that: include: Housing (1); A metal rod (2) which is disposed in the housing (1) in a transversely movable manner and is used to connect to the tail of the locking tongue; A PCB board (3) which is detachably connected to the housing (1); A feedback component (4), comprising a slot (41) and an infrared radiation probe (42), and arranged on one side of a PCB board (3), wherein the slot (41) has a U-shaped cross section, and assembly cavities are provided at two opposite side walls of the slot (41), and a receiving end and a transmitting end of the infrared radiation probe (42) are respectively arranged in two groups of assembly cavities and symmetrically distributed on both sides of the metal rod (2); When the lock tongue is being extended and retracted, the infrared radio probe (42) provides feedback on the extension and retraction state of the lock tongue by detecting the extension and retraction of the metal rod (2).

2. A detection device for a retail cabinet according to claim 1, characterized in that: The groove body (41) is a non-conductive insulating object, which prevents electrical conduction between the infrared radiation probe (42) and the housing (1).

3. A detection device for a retail cabinet according to claim 1, characterized in that: The tank body (41) is made of one of plastics, polyethylene or polypropylene.

4. A detection device for a retail cabinet according to claim 2 or 3, characterized in that: It also comprises a stabilizing component (5), the stabilizing component (5) comprising a positioning strip (51) arranged on the front side of the housing (1), and the positioning strip (51) is in contact with the groove body (41).

5. A detection device for a retail cabinet according to claim 4, characterized in that: The stabilizing component (5) further comprises two groups of expansion strips (52) arranged at the bottom of the positioning strip (51), and at least one group of spring sheets (53) are arranged on opposite sides of the two groups of expansion strips (52), and the spring sheets (53) abut against the inner wall of the groove body (41) to limit the movement of the groove body (41).

6. A detection device for a retail cabinet according to claim 1, characterized in that: There is a lateral spacing of 1 mm between the disc end surface of the metal rod (2) and the detection point of the infrared radiation probe (42). An indicator light (6) is provided on the PCB board (3) for displaying a feedback status.

7. A detection device for a retail cabinet according to claim 5, characterized in that: An extension plate (11) is integrally connected to the housing (1), a groove (12) is provided on the extension plate (11), and the PCB board (3) is arranged in the groove (12).

8. A detection device for a retail cabinet according to claim 7, characterized in that: The inner edge of the groove (12) has a slope (13) extending toward the outer edge of the extension plate (11), which is used to reduce the wear between the PCB board (3) and the groove (12) during assembly.

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