Anti-pinch device and vending machine

Abstract

The anti-pinch device comprises a door frame, the door frame is provided with a goods taking opening and a movable door used for opening and closing the goods taking opening, and the anti-pinch device is characterized by further comprising an anti-pinch plate, an elastic piece and a locking mechanism; the anti-clamping plate is installed on the movable door in a sliding mode and located between the movable door and the goods taking opening. One end of the elastic piece is mounted on the anti-clamping plate, the other end of the elastic piece is mounted on the movable door, and the elastic piece is used for applying force to the anti-clamping plate to enable the anti-clamping plate to be higher than the movable door; one end of the locking mechanism is installed on the door frame, the other end of the locking mechanism is installed on the elastic piece or the anti-clamping plate, and after the anti-clamping plate moves relative to the movable door under external pressure, the locking mechanism locks the anti-clamping plate and further locks the movable door. The anti-pinch device adopts a pure mechanical structure, is high in stability, and can effectively protect the hands of a user from being pinched by the movable door under the condition that the optical detection unit fails or fails.

Description

Technical Field

[0001] The utility model relates to the technical field of vending machines, in particular to a finger pinch prevention device and a vending machine. Background Art

[0002] Self-service vending machines are commonly used devices for commercial automation. They are not restricted by time and location, can save manpower and facilitate transactions. They are a new form of commercial retail and are also known as mini supermarkets that are open 24 hours a day. Moreover, with the changes in the market, various styles of vending machines have emerged.

[0003] After a user purchases a product, the product enters the pickup bin, and then the user opens the movable door of the pickup bin and reaches into the pickup bin to take out the product. Existing vending machines usually set up a sensing device at the movable door. After sensing that the user has taken out the product, the movable door of the pickup bin is closed. However, this method of relying on electronic components to judge whether the user has taken out the product has the disadvantage of poor reliability. When the electronic components fail or malfunction, it is easy to make a wrong judgment. There is a problem that the movable door is closed when the user's hand is still in the pickup bin, resulting in the user's finger being pinched. Therefore, a finger pinch prevention device with a reliable structure is needed to solve the problem of finger pinching by the pickup bin door panel. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a finger pinch prevention device and a vending machine to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides a finger pinch prevention device in the first aspect, including a door frame, a pickup opening and a movable door for opening and closing the pickup opening are provided on the door frame, and further including a finger pinch prevention plate, an elastic member and a locking mechanism;

[0006] The finger pinch prevention plate is slidably installed on the movable door, and the finger pinch prevention plate is located between the movable door and the pickup opening;

[0007] One end of the elastic member is installed on the finger pinch prevention plate, and the other end is installed on the movable door. The elastic member is used to apply a force to the finger pinch prevention plate so that the height of the finger pinch prevention plate is higher than that of the movable door;

[0008] One end of the locking mechanism is installed on the door frame, and the other end is installed on the elastic member or the finger pinch prevention plate. When the finger pinch prevention plate moves relative to the movable door under external pressure, the locking mechanism locks the finger pinch prevention plate, and then locks the movable door.

[0009] Further, the locking mechanism includes a first locking member and a second locking member;

[0010] The first locking member is installed on the door frame, and a plurality of card slots are provided on the first locking member;

[0011] The first end of the second locking member is hinged to the anti-clamping plate, and a clamping portion is provided at the second end of the second locking member;

[0012] An abutting member is provided on the movable door, and the side of the second locking member abuts against the abutting member;

[0013] When the anti-clamping plate is not under pressure, the first locking member and the second locking member are separated from each other;

[0014] After the anti-clamping plate moves relative to the movable door under pressure, the second locking member is rotated by the abutment of the abutting member and the clamping portion is engaged into one of the card slots.

[0015] Further, a through hole is formed in the abutting member, the second locking member passes through the through hole, and the side of the second locking member abuts against the inner wall of the through hole.

[0016] Further, two sets of the locking mechanisms are provided; the first locking members in the two sets of locking mechanisms are respectively installed on different sides of the door frame.

[0017] Further, a travel groove is formed in the movable door, and a travel rod is provided on the anti-clamping plate; the travel rod passes through the travel groove.

[0018] Further, one end of the locking mechanism is installed on the travel rod, and the other end is installed on the door frame.

[0019] Further, three travel grooves are formed, and correspondingly three travel rods are also provided. Each travel rod correspondingly passes through one of the travel grooves; a triangular structure is formed between the three travel grooves.

[0020] Further, a hanging rod is provided on the movable door, one end of the elastic member is installed on the hanging rod, and the other end of the elastic member is installed on the travel rod.

[0021] Further, a hem is provided on one side of the anti-clamping plate, a limiting groove is formed in the movable door, and the anti-clamping plate is inserted into the limiting groove through the hem.

[0022] In a second aspect, the present invention further provides a vending machine, including an anti-pinch device.

[0023] Compared with the prior art, the present invention brings the following technical effects:

[0024] The anti-pinch device of the present invention adopts a pure mechanical structure, which has high stability and can effectively protect users from being pinched by the movable door in the case of failure or invalidation of the optical detection unit.

[0025] The vending machine of the present utility model includes all the technical features and beneficial effects of the anti-pinch device, so it will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is the front view of the present utility model.

[0028] Figure 2 is the rear view of the present utility model when the locking mechanism is open.

[0029] Figure 3 is the rear view of the present utility model when the locking mechanism is locked.

[0030] Figure 4 is Figure 2 the enlarged view of part A in

[0031] Figure 5 is Figure 3 the enlarged view of part B in

[0032] Figure 6 is the perspective view of the movable door in the present utility model.

[0033] Figure 7 is the perspective view of the anti-pinch plate in the present utility model.

[0034] MAIN ELEMENT SYMBOL DESCRIPTION:

[0035] 1 - door frame, 101 - goods pickup opening, 2 - movable door, 201 - abutting member, 2011 - through hole, 202 - travel groove, 203 - hanging rod, 204 - limiting groove, 3 - anti-pinch plate, 301 - travel rod, 302 - flange, 4 - elastic member, 5 - locking mechanism, 501 - first locking member, 5011 - card slot, 502 - second locking member, 5021 - engaging portion, 6 - optical detection unit, 7 - linear motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically and clearly defined.

[0039] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0041] Embodiment 1

[0042] Please refer to Figures 1-7 , the anti-pinch device includes a door frame 1, a pick-up opening 101 is provided on the door frame 1 and a movable door 2 for opening and closing the pick-up opening 101, and further includes an anti-pinch plate 3, an elastic member 4 and a locking mechanism 5;

[0043] The anti-clamping plate 3 is slidably mounted on the movable door 2, and the anti-clamping plate 3 is located between the movable door 2 and the pick-up opening 101;

[0044] One end of the elastic member 4 is mounted on the anti-clamping plate 3, and the other end is mounted on the movable door 2. The elastic member 4 is used to apply a force to the anti-clamping plate 3 so that the height of the anti-clamping plate 3 is higher than that of the movable door 2;

[0045] One end of the locking mechanism 5 is mounted on the door frame 1, and the other end is mounted on the elastic member 4 or the anti-clamping plate 3. When the anti-clamping plate 3 moves relative to the movable door 2 under an external pressure, the locking mechanism 5 locks the anti-clamping plate 3, and then locks the movable door 2.

[0046] A pair of optical detection units 6 are provided at the top of the movable door 2. The optical detection units 6 are used to determine whether the user takes out the goods from the pick-up opening 101. When the user takes out the goods, the driving mechanism is used to drive the movable door 2 to move so as to close the pick-up opening 101. However, in actual use, the optical detection units 6 may fail or malfunction. When the user's hand is still in the pick-up opening 101, the driving mechanism drives the movable door 2 to move, and finally the movable door 2 clamps the user's hand. Therefore, in this embodiment, on this basis, a pure mechanical anti-pinch device is additionally provided. When the optical detection units 6 fail or malfunction and the user's hand is still in the pick-up opening 101, the driving mechanism drives the movable door 2 to move. Since the height of the anti-clamping plate 3 is higher than that of the movable door 2, the user's hand first contacts the anti-clamping plate 3 and overcomes the elastic force of the elastic member 4 to make the anti-clamping plate 3 immovable. At this time, the movable door 2 continues to rise, causing relative movement between the movable door 2 and the anti-clamping plate 3. After the movable door 2 moves a certain distance, the locking mechanism 5 locks the anti-clamping plate 3 to prevent the anti-clamping plate 3 from rising further; at this time, since the maximum stroke is reached between the movable door 2 and the anti-clamping plate 3, the movable door 2 is also restricted by the anti-clamping plate 3 and cannot move. At the same time, a hem 302 is provided on one side of the anti-clamping plate 3, and a limiting groove 204 is provided on the movable door 2. The anti-clamping plate 3 is inserted into the limiting groove 204 through the hem 302; the hem 302 can also play a role in restricting the movement of the movable door 2. At the same time, the hem 302 can also play a role in restricting the moving direction of the anti-clamping plate 3 relative to the movable door 2. The anti-pinch device adopts a pure mechanical structure, which has high stability and can effectively protect the user from being pinched by the movable door 2 when the optical detection units 6 fail or malfunction.

[0047] Further, the locking mechanism 5 includes a first locking member 501 and a second locking member 502;

[0048] The first locking member 501 is mounted on the door frame 1, and a plurality of card slots 5011 are formed on the first locking member 501;

[0049] The first end of the second locking member 502 is hinged to the anti-clamping plate 3, and a clamping portion 5021 is provided at the second end of the second locking member 502;

[0050] An abutting member 201 is provided on the movable door 2, and the side of the second locking member 502 abuts against the abutting member 201;

[0051] When the anti-clamping plate 3 is not under pressure, the first locking member 501 is separated from the second locking member 502;

[0052] After the anti-clamping plate 3 moves relative to the movable door 2 under pressure, the second locking member 502 is rotated by the abutment of the abutting member 201, and the clamping portion 5021 is engaged into one of the card slots 5011.

[0053] In this embodiment, the first locking member 501 is a ratchet rack, and the second locking member 502 is a barb dial with a clamping portion 5021. When the anti-clamping plate 3 is not under pressure, that is, when the user's hand or the commodity does not press the anti-clamping plate 3, the first locking member 501 is separated from the second locking member 502, and at this time, the anti-clamping plate 3 and the movable door 2 can move normally. When the anti-clamping plate 3 is under pressure, that is, when the user's hand or the commodity presses the anti-clamping plate 3, the movable door 2 rises relative to the anti-clamping plate 3, and the abutting member 201 also descends relative to the second locking member 502. The second locking member 502 is rotated by the abutment of the abutting member 201 and rotates around the hinge between the second locking member 502 and the anti-clamping plate 3, so that the clamping portion 5021 of the second locking member 502 is engaged into one of the card slots 5011 in the first locking member 501. When the clamping portion 5021 is engaged into one of the card slots 5011, the movement of the anti-clamping plate 3 is restricted, and thus the movement of the movable door 2 is restricted.

[0054] Further, a through hole 2011 is formed in the abutting member 201, the second locking member 502 passes through the through hole 2011, and the side of the second locking member 502 abuts against the inner wall of the through hole 2011.

[0055] In this embodiment, the abutting member 201 is integrally formed with the movable door 2. The abutting member 201 is provided at the bottom of the movable door 2. The through hole 2011 is formed in the abutting member 201, and the second locking member 502 passes through the through hole 2011. The inner wall of the through hole 2011 can be used to abut against the second locking member 502, and the driving mechanism for driving the movable door 2 is also connected to the second locking member 502. In this embodiment, the driving mechanism is a linear motor 7. In other embodiments, the driving mechanism can also adopt other mechanisms with reciprocating movement functions.

[0056] Further, two sets of the locking mechanisms 5 are provided; the first locking members 501 in the two sets of the locking mechanisms 5 are respectively installed on different sides of the door frame 1.

[0057] Further, a travel groove 202 is formed in the movable door 2, and a travel rod 301 is provided on the anti-clamping plate 3; the travel rod 301 passes through the travel groove 202.

[0058] In this embodiment, the functions of the travel groove 202 and the travel rod 301 are to limit the maximum travel between the movable door 2 and the anti-clamping plate 3; when the travel rod 301 abuts against the top of the travel groove 202, the anti-clamping plate 3 moves to the topmost relative to the movable door 2, and at this time, the first locking member 501 is separated from the second locking member 502; when the travel rod 301 abuts against the bottom of the travel groove 202, the anti-clamping plate 3 moves to the bottommost relative to the movable door 2, and at this time, the first locking member 501 is engaged with the second locking member 502.

[0059] Further, one end of the locking mechanism 5 is installed on the travel rod 301, and the other end is installed on the door frame 1.

[0060] Further, three travel grooves 202 are formed, and correspondingly, three travel rods 301 are also provided. Each travel rod 301 correspondingly passes through one of the travel grooves 202; a triangular structure is formed among the three travel grooves 202.

[0061] In this embodiment, the second locking member 502 in the locking mechanism 5 is hinged on the travel rod 301 at the middle position.

[0062] Further, a hanging rod 203 is provided on the movable door 2. One end of the elastic member 4 is installed on the hanging rod 203, and the other end of the elastic member 4 is installed on the travel rod 301.

[0063] In this embodiment, the hanging rod 203 is located directly above the travel rod 301, and the elastic member 4 is a tension spring; in other embodiments, the hanging rod 203 can also be arranged directly below the travel rod 301, and at this time, the elastic member 4 can be a spring; in still another other embodiment, the elastic member 4 can also be an elastic member 4 other than a spring and a tension spring.

[0064] Embodiment Two

[0065] A vending machine includes an anti-pinch device. The vending machine in this embodiment includes all the technical features and technical effects of Embodiment One, and thus will not be elaborated herein.

[0066] Descriptions such as "specific examples" or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments, as long as they meet the purpose of the present utility model, and they should all be within the scope of protection required by the present utility model. For example: different combinations of the specific embodiments, different combinations of the distinguishing technical features.

Claims

1. Anti-pinch device, comprising a door frame (1), wherein a picking opening (101) and a movable door (2) for opening and closing the picking opening (101) are provided on the door frame (1), characterized in that: It also includes an anti-pinch plate (3), an elastic member (4) and a locking mechanism (5); The anti-pinch plate (3) is slidably mounted on the movable door (2), and the anti-pinch plate (3) is located between the movable door (2) and the cargo taking port (101); One end of the elastic member (4) is mounted on the anti-pinch plate (3), and the other end is mounted on the movable door (2). The elastic member (4) is used to apply a force to the anti-pinch plate (3) so that the height of the anti-pinch plate (3) is higher than that of the movable door (2); One end of the locking mechanism (5) is mounted on the door frame (1), and the other end is mounted on the elastic member (4) or the anti-pinch plate (3). When the anti-pinch plate (3) is moved relative to the movable door (2) by external pressure, the locking mechanism (5) locks the anti-pinch plate (3), thereby locking the movable door (2).

2. The pinch protection device according to claim 1, characterized in that: The locking mechanism (5) comprises a first locking member (501) and a second locking member (502); The first locking member (501) is installed on the door frame (1), and a plurality of slots (5011) are provided on the first locking member (501); The first end of the second locking member (502) is hinged to the anti-snap plate (3), and the second end of the second locking member (502) is provided with a locking portion (5021); The movable door (2) is provided with a supporting member (201), and the side edge of the second locking member (502) is in contact with the supporting member (201); When the anti-snap plate (3) is not subjected to pressure, the first locking member (501) and the second locking member (502) are separated; When the anti-snap plate (3) is moved relative to the movable door (2) under pressure, the second locking member (502) is abutted by the abutting member (201) and rotates, causing the engaging portion (5021) to be engaged in one of the slots (5011).

3. The pinch prevention device according to claim 2, wherein: A through hole (2011) is provided on the abutting member (201), the second locking member (502) passes through the through hole (2011), and the side of the second locking member (502) abuts against the inner wall of the through hole (2011).

4. The pinch protection device according to claim 2, wherein: The locking mechanism (5) is provided with two sets; the first locking members (501) in the two sets of the locking mechanism (5) are respectively installed on different sides of the door frame (1).

5. The pinch protection device according to claim 1, characterized in that: The movable door (2) is provided with a travel groove (202), and the anti-pinch plate (3) is provided with a travel rod (301); the travel rod (301) passes through the travel groove (202).

6. The pinch protection device according to claim 5, wherein: One end of the locking mechanism (5) is mounted on the travel rod (301), and the other end is mounted on the door frame (1).

7. The anti-pinch device according to claim 5, characterized in that: There are three travel grooves (202), and three corresponding travel rods (301) are also provided. Each travel rod (301) passes through one of the travel grooves (202); a triangular structure is formed between the three travel grooves (202).

8. The anti-pinch device according to claim 5, characterized in that: The movable door (2) is provided with a hanging rod (203), one end of the elastic member (4) is mounted on the hanging rod (203), and the other end of the elastic member (4) is mounted on the travel rod (301).

9. The anti-pinch device according to claim 1, characterized in that: One side of the anti-clamping plate (3) is provided with a hem (302), the movable door (2) is provided with a limiting groove (204), and the anti-clamping plate (3) is inserted into the limiting groove (204) through the hem (302).

10. A vending machine, characterized in that: Comprising the anti-pinch device according to any one of claims 1-9.

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