A rope collecting mechanism of a commodity anti-theft device

Abstract

The utility model provides a kind of rope collecting mechanism of commodity anti-theft device, including first shell, rope collecting elastic element and carousel, the top surface of carousel is provided with track groove, the rope collecting mechanism is also provided with control mechanism, the control mechanism includes cover plate and the rolling body that is located in track groove and is rolled with track groove cooperation, the top of the rolling body exposes the track groove, the bottom of the cover plate is provided with the directional slot that can limit the displacement direction of the rolling body with the top of the rolling body adaptation, when carousel rotates and track groove acts on the rolling body, the rolling body is extruded and needs radial displacement, the rolling body can move along the directional slot. The utility model can be through the directional slot of rolling piece and cover plate as control mechanism, rolling piece and the cover plate between upper are also in separation state, in this way, the problem of vertical pin connection root fracture does not occur, improve service life, and friction is also smaller, and the wear of control piece is smaller and hand feeling is better.

Description

Technical Field

[0001] This utility model relates to anti-theft devices for goods, and more particularly to a rope-retracting mechanism for anti-theft devices for goods. Background Technology

[0002] When in use, the anti-theft device is connected to and locked onto the protected merchandise. The device contains a frequency element that will detect and trigger an alarm if the merchandise is taken out of the store without the anti-theft device being legally removed.

[0003] For product protection devices that use ropes to secure goods, such as those used in packaging boxes, these include rope winders and locking mechanisms. Currently, there are anti-theft devices with automatic rope winders. When the locking mechanism is unlocked, pulling the automatic winder slightly in the direction of rope extension will automatically wind the rope back. The automatic rope winder includes a control panel and a control component that works with the control panel to achieve the above functions. However, the control component is a vertical pin suspended above the control panel, connected to a rotatable base. With this structure, the connection between the vertical pin and the base is severely tested by the pressure and tangential force from the track surface in the turntable. The vertical pin is easily damaged prematurely or its base may break due to the rotation of the control panel. Utility Model Content

[0004] The purpose of this utility model is to provide a cord-retracting mechanism for an anti-theft device for goods, which can improve its service life. To this end, this utility model adopts the following technical solution: A cord-retracting mechanism for an anti-theft device includes a first housing, a cord-retracting elastic element, and a turntable. The top surface of the turntable is provided with a track groove, which is distributed at different radii and interconnected. The cord-retracting mechanism further includes a control mechanism comprising a cover plate and a rolling element that sits within the track groove and rolls in cooperation with it. The top of the rolling element protrudes from the track groove. The bottom surface of the cover plate is provided with a directional groove that fits the top of the rolling element and defines its displacement direction. When the turntable rotates and the track groove acts on the rolling element, causing it to be compressed and requiring radial displacement, the rolling element can move along the directional groove.

[0005] Based on the above technical solutions, the present invention may also adopt the following further technical solutions, or combine these further technical solutions: The track groove has two radial rings, an inner and an outer ring, and a connecting track groove between the inner and outer ring track grooves. Taking the relative movement direction of the rolling element as a reference direction, the first connecting track groove inlet from the outer ring track groove to the inner ring track groove is a first slope that allows the rolling element to flip over based on the pull rope elastic element, but cannot be flipped over in the opposite direction based on manual pull rope. The outlet is a second slope that allows the rolling element to flip over based on manual pull rope, but cannot be flipped over in the opposite direction based on the pull rope elastic element. The second connecting track groove outlet from the inner ring track groove to the outer ring track groove is a third slope that allows the rolling element to flip over based on manual pull rope, but cannot be flipped over in the opposite direction based on the pull rope elastic element.

[0006] The first connecting track groove is a V-shaped turning track. The outer track groove bifurcation before the entrance of the first connecting track groove is a fourth slope where the rolling element can be flipped over by manually pulling the rope, but cannot be flipped over in the opposite direction by the elastic element driven by the rope winding. The inner track groove bifurcation before the exit of the second connecting track groove is a fifth slope where the rolling element can be flipped over by the elastic element driven by the rope winding, but cannot be flipped over in the opposite direction by manually pulling the rope.

[0007] The cover plate is the cover plate of the first housing and is fixedly connected to the first housing. A through hole is provided in the center of the cover plate, and a drive connection part is provided in the center of the turntable. The drive connection part is provided corresponding to the through hole.

[0008] The drive connection part is set on the circular boss on the top of the turntable, and the through hole is a circular through hole, with the circular boss located in the circular through hole.

[0009] The directional groove is a radial straight groove.

[0010] The anti-theft device for goods is equipped with a rope winding mechanism, which includes a second housing. The second housing is located above the first housing and is connected as a whole. A rope winding shaft is provided in the second housing, and the rope winding shaft is connected to the drive connection part.

[0011] The bottom of the second housing is provided with a recessed cavity, and the top of the cover plate is provided with a boss. The boss is located in the recessed cavity, and the boss is provided with a through hole and the bottom surface of the boss is provided with a directional groove.

[0012] The anti-theft device for goods is provided with a bottom connecting plate. The anti-theft rope in the anti-theft device passes through the bottom connecting plate and its two ends are connected to a circuit board connected to the rope winding shaft. The bottom connecting plate is located below the first housing.

[0013] The anti-theft device for goods is also equipped with a locking mechanism, which includes a third housing and a top rotatable housing, a laterally movable pawl, and a locking structure for the pawl. The locking structure can be unlocked by a magnetic unlocking device. The third housing has a ring of inner ratchet teeth that cooperate with the pawl. The pawl can engage or disengage with the ratchet teeth by lateral movement. The pawl is connected to the top rotatable housing, and the rope winding shaft is connected to the top rotatable housing and rotates together. The locking structure is installed inside the top rotatable housing. The third housing and the second housing are fixedly connected.

[0014] By adopting the technical solution of this utility model, the present utility model can use the directional groove on the cover plate as the control mechanism, and utilize the cooperation between the rolling element and the track on the top surface of the turntable, while the rolling element and the cover plate above are in a separated state. In this way, the problem of vertical pin connection root breakage in the prior art will not occur, thus improving the service life, and the friction is also smaller, resulting in less wear on the control components and a better feel. Attached Figure Description

[0015] Figure 1 This is an exploded view of the structure of an embodiment of the rope winding mechanism of this utility model.

[0016] Figure 2 This is a schematic diagram of the bottom of the cover plate in an embodiment of the rope winding mechanism of this utility model.

[0017] Figure 3 This is a cross-sectional view of an embodiment of the anti-theft device for goods according to this utility model.

[0018] Figure 4 This is a schematic diagram of the top of the turntable in an embodiment of the rope winding mechanism of this utility model.

[0019] Figure 5 and Figure 6 These are front views of the embodiments of the anti-theft device for goods of this utility model after being folded up and when the goods are bundled up.

[0020] Figure 7 This is an exploded view of an embodiment of the anti-theft device for goods according to this utility model. Detailed Implementation

[0021] Referring to the accompanying drawings, the present invention provides a cord-retracting mechanism for an anti-theft device, comprising a first housing 1, a cord-retracting elastic element 2, and a turntable 3. The top surface of the turntable 3 is provided with a track groove 30, which is distributed at different radii and interconnected. The cord-retracting mechanism also includes a control mechanism, comprising a cover plate 4 and a rolling element 5 situated in and rollingly engaging with the track groove 30. The top of the rolling element 5 protrudes from the track groove 30. The bottom surface of the cover plate 4 is provided with a directional groove 41 adapted to the top of the rolling element and constraining the displacement direction of the rolling element 5. When the turntable 3 rotates and the track groove 30 acts on the rolling element 5, causing the rolling element 5 to be compressed and requiring radial displacement, the rolling element 5 can move along the directional groove 41, thereby controlling the rotation direction of the turntable 3. The directional groove 41 is preferably a radial straight groove. The rolling element 5 experiences rolling friction with both the track groove 30 and the directional groove 41. This not only reduces operational friction but also eliminates the need for movement control based on a fixed connection with the cover plate 4, resulting in a longer service life. Furthermore, the rolling element 5 is situated within the track groove 30 below it, enhancing operational reliability. The turntable 3 is driven from two directions: when tightening the rope 100, it is driven to rotate by the elastic element 2; when unwinding the rope, it is driven by the rope winding shaft 61 to rotate in the opposite direction to the tightening rotation.

[0022] The cover plate 4 is the cover plate of the first housing 1 and is fixedly connected to the first housing 1. The rope-retracting elastic element 2 is provided inside the first housing, and the rope-retracting elastic element 2 can be a coil spring.

[0023] The cover plate 4 has a through hole 42 at its center, and the turntable 3 has a drive connection part 31 at its center, such as a groove or a key. The drive connection part 31 is provided corresponding to the through hole 42, preferably located in the through hole 42. The drive connection part 31 is provided on a circular boss 310 on the top of the turntable. The through hole 42 is a circular through hole, and the circular boss 310 is located in the circular through hole. This can provide a certain degree of rotational support. The anti-theft device for goods is provided with a rope winding mechanism. The rope winding mechanism includes a second housing 6, which is located above the first housing 1 and connected as a whole. A rope winding shaft 61 is provided in the second housing, and a connecting plate 62 is provided at the bottom of the rope winding shaft 61. The drive connection part 31 is connected through the connecting plate 62, for example, through a keyway connection.

[0024] The bottom of the second housing 6 is provided with a cavity 62, and the top of the cover plate 4 is provided with a boss 40. The boss 40 is located in the cavity 62. The boss 40 is provided with a through hole 42 and the bottom surface of the boss is provided with an orientation groove 41. This can better match the setting structure of the circular boss 310 located in the through hole 42, and at the same time, it can make the structure more compact.

[0025] The track groove has inner and outer rings 301 and 302 in the radial direction, and a connecting track groove between the inner track groove 301 and the outer track groove 302. Furthermore, with the relative motion direction of the rolling element 5 as a reference direction, the first connecting track groove inlet A from the outer track groove to the inner track groove is driven by the rope-retracting elastic element 2. Figure 4 The turntable 3 rotates clockwise, which allows the rolling element 5 to flip over, and cannot be driven by a manual pull rope. Figure 4 The turntable 3 rotates counterclockwise, causing the rolling element 5 to flip over the first slope A0. The outlet B is the second slope B0, which is driven by a manual rope pull and cannot be driven by the rope retraction elastic element 2. The outlet E of the second connecting track groove from the inner track groove to the outer track groove is the third slope E0, which is driven by a manual rope pull and cannot be driven by the rope retraction elastic element 2.

[0026] The first track connecting track groove is a V-shaped turning track. The outer track groove bifurcation C before the entrance A of the first connecting track groove is a fourth slope C0, which allows the rolling body 5 to flip over based on manual rope pulling and cannot be flipped over in the opposite direction based on the elastic element 5 of the rope winding. The inner track groove bifurcation D before the exit E of the second connecting track groove is a fifth slope D0, which allows the rolling body 5 to flip over based on the elastic element 2 of the rope winding and cannot be flipped over in the opposite direction based on manual rope pulling.

[0027] The anti-theft device for goods is provided with a bottom connecting plate 101. The anti-theft rope 100 in the anti-theft device passes through the bottom connecting plate 101 and is connected at both ends to the circuit board 63 connected to the rope winding shaft 61. The bottom connecting plate 101 is located below the first housing 1.

[0028] The anti-theft device for goods is also equipped with a locking mechanism, which includes a third housing 7 and a top rotatable housing 8, a laterally movable pawl 91, and a locking structure 92 for the pawl. The locking structure 92 can be unlocked by a magnetic unlocking device. The third housing 7 is provided with a ring of inner ratchet teeth 71 that engage with the pawl 91. The pawl 91 can engage or disengage with the ratchet teeth by lateral movement. The pawl 91 is connected to the top rotatable housing 8, and the rope winding shaft 61 is connected to the top rotatable housing 8, and all three rotate together. The locking structure 92 is provided inside the top rotatable housing 8. The third housing 7 and the second housing 6 are fixedly connected.

[0029] Unless otherwise specified, in this utility model, terms such as "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "axial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0030] Unless otherwise expressly specified and limited, the terms "set," "clamped," and "connected" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the protection scope of the present utility model.

Claims

1. A cord-retracting mechanism for an anti-theft device, comprising a first housing, a cord-retracting elastic element, and a turntable, wherein a track groove is provided on the top surface of the turntable, and the track grooves are distributed at different radii on the top surface and are interconnected; characterized in that, The rope winding mechanism is also provided with a control mechanism, which includes a cover plate and a rolling element that sits in the track groove and rolls with the track groove. The top of the rolling element is exposed in the track groove. The bottom surface of the cover plate is provided with a directional groove that fits with the top of the rolling element and can limit the displacement direction of the rolling element. When the turntable rotates and the track groove acts on the rolling element, and the rolling element is squeezed and needs radial displacement, the rolling element can move along the directional groove.

2. The rope-retracting mechanism of the anti-theft device for goods as described in claim 1, characterized in that, The track groove has two radial rings, an inner and an outer ring, and a connecting track groove between the inner and outer ring track grooves. Taking the relative movement direction of the rolling element as a reference direction, the first connecting track groove inlet from the outer ring track groove to the inner ring track groove is a first slope that allows the rolling element to flip over based on the pull rope elastic element, but cannot be flipped over in the opposite direction based on manual pull rope. The outlet is a second slope that allows the rolling element to flip over based on manual pull rope, but cannot be flipped over in the opposite direction based on the pull rope elastic element. The second connecting track groove outlet from the inner ring track groove to the outer ring track groove is a third slope that allows the rolling element to flip over based on manual pull rope, but cannot be flipped over in the opposite direction based on the pull rope elastic element.

3. The rope-retracting mechanism of the anti-theft device for goods as described in claim 2, characterized in that, The first connecting track groove is a V-shaped turning track. The outer track groove bifurcation before the entrance of the first connecting track groove is a fourth slope that allows the rolling element to flip over based on manual rope pulling, but cannot be flipped over in the opposite direction based on the elastic element driven by rope winding. The inner track groove bifurcation before the exit of the second connecting track groove is a fifth slope that allows the rolling element to flip over based on the elastic element driven by rope winding, but cannot be flipped over in the opposite direction based on manual rope pulling.

4. The rope-retracting mechanism of the anti-theft device for goods as described in claim 1, characterized in that, The cover plate is the cover plate of the first housing and is fixedly connected to the first housing. A through hole is provided in the center of the cover plate, and a drive connection part is provided in the center of the turntable. The drive connection part is provided corresponding to the through hole.

5. The rope-retracting mechanism of the anti-theft device for goods as described in claim 4, characterized in that, The drive connection part is set on the circular boss on the top of the turntable, and the through hole is a circular through hole, with the circular boss located in the circular through hole.

6. The rope-retracting mechanism of the anti-theft device for goods as described in claim 1, characterized in that, The directional groove is a radial straight groove.

7. The rope-retracting mechanism of a commodity anti-theft device as described in claim 5, characterized in that, The anti-theft device for goods is equipped with a rope winding mechanism, which includes a second housing. The second housing is located above the first housing and is connected as a whole. A rope winding shaft is provided in the second housing, and the rope winding shaft is connected to the drive connection part.

8. The rope-retracting mechanism of the anti-theft device for goods as described in claim 7, characterized in that, The bottom of the second housing is provided with a recessed cavity, and the top of the cover plate is provided with a boss. The boss is located in the recessed cavity, and the boss is provided with a through hole and the bottom surface of the boss is provided with a directional groove.

9. The rope-retracting mechanism of a commodity anti-theft device as described in claim 7, characterized in that, The anti-theft device for goods is provided with a bottom connecting plate. The anti-theft rope in the anti-theft device passes through the bottom connecting plate and its two ends are connected to a circuit board connected to the rope winding shaft. The bottom connecting plate is located below the first housing.

10. The rope-retracting mechanism of a commodity anti-theft device as described in claim 7, characterized in that, The anti-theft device for goods is also equipped with a locking mechanism, which includes a third housing and a top rotatable housing, a laterally movable pawl, and a locking structure for the pawl. The locking structure can be unlocked by a magnetic unlocking device. The third housing has a ring of inner ratchet teeth that cooperate with the pawl. The pawl can engage or disengage with the ratchet teeth by lateral movement. The pawl is connected to the top rotatable housing, and the rope winding shaft is connected to the top rotatable housing and rotates together. The locking structure is installed inside the top rotatable housing. The third housing and the second housing are fixedly connected.

Images