CN112392339A

CN112392339A - Commodity protection device and using method thereof

Info

Publication number: CN112392339A
Application number: CN202011216283.5A
Authority: CN
Inventors: 朱立德; 刘弋兴
Original assignee: Sichuang Yihui Technology Co ltd
Current assignee: Sichuang Yihui Technology Co ltd; Hangzhou Century Co Ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-02-23

Abstract

The invention relates to a commodity protection device and its using method, which not only has high safety in use, but also has a reasonable layout and compact structure, and has high production efficiency, low production cost and low failure rate in use. The lower end of the cylinder is provided with a bearing ring and the outer circular surface of the bearing ring is provided with a plurality of bearing plates, and the annular cavity between the outer circular wall surface of the bearing ring and the inner circular wall surface of the shell is provided with a plurality of convex blocks, There is a gap between two adjacent bumps and the gap is located below the corresponding bearing plate, a partition plate is arranged between the bump and the bearing plate on the bottom side of the slope of the bump, and the slope bottom of the bump is provided with a partition plate. The steel ball can roll along the slope from the bottom of the slope to the corresponding bearing plate under the action of external force. Advantages: First, the assembly of the device uses fewer components and the structural complexity of the components is low, which not only improves the assembly efficiency, but also reduces the production cost; second, the device has a more compact structure and a more reasonable layout, thereby greatly reducing its volume. .

Description

Commodity protection device and using method thereof

Technical Field

The invention relates to a commodity protection device and a use method thereof, which have the advantages of high use safety, reasonable layout, compact structure, high production efficiency, low production cost and low use failure rate, and belong to the field of commodity theft prevention.

Background

The patent CN 110043139A and the name of the protection device for commodities of the company capital company all comprise a shell, a lock core piece, a frequency element and an anti-theft nail, wherein a lock core installation cavity is arranged in the shell, the lock core piece is arranged in the lock core installation cavity, a lock core column compression return spring capable of pushing the lock core column to move downwards and move downwards when a rotating piece in the lock core piece is driven by a magnetic unlocking device to rotate is arranged in the lock core installation cavity, two sides of the bottom surface of the lock core installation cavity are respectively provided with an arc-shaped ramp groove, and the ramp tops of the two arc-shaped ramp grooves are respectively provided with a positioning groove; the lower terminal surface of rotating member is equipped with two steel ball limit groove, be equipped with a steel ball and two steel balls stop in the minimum of corresponding arc ramp groove in two steel ball limit groove respectively, positioning groove's the degree of depth less than or equal to the radius of steel ball, perhaps positioning groove's the degree of depth is greater than the radius of steel ball. An annular cavity is arranged in the shell and is located on the outer side of the lock cylinder installation cavity, and a frequency element is arranged in the annular cavity. The shell comprises an upper cover and a lower shell; when the upper cover and the lower cover are buckled to form the shell, an upper lock core mounting cavity in the upper cover and a lower lock core mounting cavity in the lower shell are folded to form a lock core mounting cavity, and an upper annular cavity in the upper cover and a lower annular cavity in the lower shell are folded to form an annular cavity. The bottom surface of lock core installation cavity is opened has two draw-in grooves and two draw-in grooves to be located the slope bottom department inboard that corresponds arc ramp groove, the draw-in groove link up each other with corresponding arc ramp groove and the degree of depth of draw-in groove is greater than the maximum depth of arc ramp groove, the lower terminal surface of rotating member is equipped with two steel ball draw-in grooves and corresponds the spacing recess of steel ball and link up, and two steel ball draw-in grooves are located and correspond the draw-in groove directly over when two spacing recesses of steel ball are located and correspond arc ramp groove slope bottom department. The utility model discloses a lock core installation cavity, including lock core installation cavity, recess, return spring, rotary piece, circular recess and projection, the upper end face that is equipped with projection and projection in the middle of the bottom surface of lock core installation cavity is opened has the recess anastomotic with lock core column bottom surface profile, install in the lock core installation cavity and be equipped with return spring between lock core column and recess bottom surface after the cooperation of pegging graft of the lower end of lock core column and recess, open in the middle of the lower terminal surface of rotary piece is positive to have circular recess and rotary piece to install in the lock core installation cavity after circular recess and. The lock comprises a lock core column and is characterized in that a plurality of convex blocks are uniformly arranged on the lower portion of the outer circular surface of the lock core column, a plurality of convex block slots are arranged on the inner wall surface of the groove, and the sizes of the convex block slots are matched with the sizes of the convex blocks. The outer wall surface of the convex column is provided with three inward concave grooves at equal intervals, and the length of the convex column is greater than the depth of the circular groove. The positioning groove is a spherical groove. A method for using a commodity protection device comprises a shell, a lock core piece, a frequency element and an anti-theft nail, wherein the depth of a positioning groove in the shell is smaller than or equal to the radius of a steel ball; rotating the magnetic unlocking device, wherein the two rotating steel magnets on two sides drive the two steel balls to rotate together, the two rotating steel balls push the rotating part to rotate, the rotating part pushes the lock cylinder column to move downwards under the transmission of the lifting surface of the rotating part and the lifting surface of the lock cylinder column which are mutually attached or meshed, and the steel balls at the upper end of the lock cylinder column simultaneously move downwards while the lock cylinder column moves downwards until the steel balls fall into the positioning groove, and gaps exist among the steel balls, the steel ball bowl and the nail rod of the anti-theft nail at the moment, so that the lock cylinder component is positioned and unlocked; pulling out the anti-theft nail to realize unlocking of the protection device of the commodity; and step four, moving the magnetic unlocking device away, wherein the steel ball positioned in the positioning groove loses the support of the attraction force of the bottom magnetic steel in the magnetic unlocking device, the restoring force of the reset spring pushes the lock cylinder column to move upwards, the lock cylinder column which moves upwards pushes the rotating part to rotate reversely under the transmission of the lifting surface of the rotating part and the lifting surface of the lock cylinder column, the rotating part which rotates reversely takes the steel ball out of the positioning groove, and the steel ball returns to the corresponding clamping groove along the arc-shaped slope groove, so that the steel ball is returned. A method for using a commodity protection device comprises a shell, a lock core piece, a frequency element and an anti-theft nail, wherein the depth of a positioning groove in the shell is larger than the radius of a steel ball; rotating the magnetic unlocking device, wherein the two rotating steel magnets on two sides drive two steel balls to rotate together, the two rotating steel balls push the rotating part to rotate, the rotating part pushes the lock cylinder column to move downwards under the transmission of the lifting surface of the rotating part and the lifting surface of the lock cylinder column which are mutually attached or meshed, and the steel balls at the upper end of the lock cylinder column simultaneously move downwards while the lock cylinder column moves downwards until the steel balls fall into the positioning groove, and gaps exist among the steel balls, the steel ball bowl and the nail rod of the anti-theft nail at the moment, so that the lock cylinder component is positioned and unlocked; pulling out the anti-theft nail to realize unlocking of the protection device of the commodity; and step four, inverting the protection device of the commodity, enabling the two steel balls to fall into the corresponding steel ball limiting grooves under the action of gravity, enabling the restoring force of a reset spring to push the lock cylinder column to move downwards, enabling the lock cylinder column moving downwards to push the rotating piece and the steel balls to rotate reversely under the transmission of the rising surface of the rotating piece and the rising surface of the lock cylinder column until the rising surface of the rotating piece and the rising surface of the lock cylinder column return to the initial attaching or meshing state, then turning back the protection device of the commodity again, and enabling the two steel balls to roll into the corresponding clamping grooves after falling back to the slope bottoms of the corresponding arc-shaped slope grooves, so that the steel balls are restored. The commodity protection device has the following defects according to the reaction of customers in the use process: firstly, the device needs the rotating piece to be matched with a complex lock cylinder column body for use, so that the structure of the device is more complex, the production cost of the device is improved, the size is large, and the assembly efficiency is low; secondly, the device has more components and complex structure, so that the failure probability of the device is higher in the using process.

Disclosure of Invention

The design purpose is as follows: in order to avoid the defects in the background technology, the commodity protection device and the use method thereof are designed, wherein the commodity protection device is high in use safety, reasonable in layout, compact in structure, high in production efficiency, low in production cost and low in use failure rate.

The design scheme is as follows: the design purpose is realized.

1. The lock core is characterized in that the lower end of a lock core cylinder body in the lock core piece is provided with a bearing ring, a plurality of bearing plates are arranged on the outer circular surface of the bearing ring, a plurality of convex blocks are arranged in an annular cavity between the outer circular wall surface of the bearing ring and the inner circular wall surface of the shell, the upper end surfaces of the convex blocks are slope surfaces, a gap is arranged between every two adjacent convex blocks and is positioned below the corresponding bearing plate, a separation plate is arranged between each convex block and the corresponding bearing plate positioned at the slope bottom side of the corresponding convex block, a steel ball is arranged at the slope bottom of each convex block, and the steel ball can roll onto the corresponding bearing plate from the slope bottom of the slope under the action of external force. The purpose of this design is: when the anti-theft needle unlocking device is used, a commodity protection device locked with an anti-theft needle is placed on the rotatable magnetic unlocking device, the rotatable magnetic unlocking device drives the steel balls to roll to the corresponding bearing plate from the slope bottom along the slope through magnetic force, at the moment, the magnetic force in the vertical direction in the magnetic unlocking device can attract the steel balls at the same time, the steel balls drive the corresponding bearing ring, the lock cylinder body and the lock cylinder balls to descend together under the action of the attractive force, the spring is compressed in the descending process of the lock cylinder body, and the anti-theft needle is unlocked at the same time; then, after the anti-theft needle is pulled out, the commodity protection device is taken out of the magnetic unlocking device, the bearing ring, the lock cylinder column body and the lock cylinder balls move upwards together and return to the original position under the action of the restoring force of the spring, and the steel balls return to the bottom of the slope along the slope under the action of the weight; the device comprises an upper cover, a bottom cover, a bearing ring, a steel bowl, a lock cylinder ball, a steel ball, a spring and a lock cylinder column body, and because the device does not need a rotating part and the lock cylinder column body has a simpler structure, namely fewer parts are used for assembly and the complexity of the part structure is lower, the assembly efficiency is improved, and the production cost is reduced; secondly, the device does not need a rotating part, a positioning groove and a clamping groove which are arranged in the original device in the background technology, and the structure of the lock cylinder column body is simpler, so that the device has more compact structure and more reasonable layout, thereby greatly reducing the volume; thirdly, this device need rotatory side magnet (ring magnet) and the axial superstrong magnet that is located this device bottom when the unblock, only all roll when a plurality of steel balls and target in place, and down simultaneously (the steel ball pushes down the bearing ring under the attraction of axial superstrong magnet, the bearing ring is down to the spacing recess that a plurality of arc lugs enclosed, the bearing plate is down to the clearance that corresponds simultaneously in, realize the unblock of device, such unblock mode is owing to need a plurality of magnet cooperation use of equidirectional not just can the unblock, thereby improve the unblock degree of difficulty greatly, and then the safety in utilization of device has been improved.

2. The bottom surface of the inner cavity of the shell is provided with a spring limiting insert block or a spring limiting slot, the lower end head of the spring is in inserted fit with the spring limiting insert block or the spring limiting slot, the upper end head of the spring is in contact with the lower end surface of the lock cylinder body, and the lock cylinder body and the bearing ring are arranged on the bottom surface of the inner cavity of the shell through the support of the spring. The purpose of this design is: be equipped with the spacing inserted block of spring or the spacing slot of spring on the bottom surface of casing inner chamber, the lower terminal of spring and the spacing inserted block of spring or the spacing slot of spring are pegged graft and are cooperated and the upper end of spring and the lower terminal surface contact of lock core cylinder, lock core cylinder and bearing ring pass through the support setting of spring on the bottom surface of casing inner chamber, and the spacing inserted block of spring or the spacing slot of spring not only are convenient for the assembly of parts such as spring, can prevent moreover that the skew from appearing in the use to influence the result of use of device.

3. The steel ball parking platform is arranged at the slope bottom of the convex block, the upper end face of the bearing plate is an inclined face, and the height of the lower side end of the bearing plate is matched with the height of the slope top of the corresponding convex block. The purpose of this design is: firstly, the steel ball parking platform at the bottom of the bump slope is arranged, so that the risk of jamming of the steel ball can be avoided (if the included angle between the separation plate and the bottom surface of the bump slope is an acute angle, the steel ball will have a certain probability of jamming after falling back); and the upper end surface of the bearing plate is an inclined surface, so that the steel ball can automatically fall back to the original position under the action of gravity after the spring is restored to the original shape.

4. The inner cavity of the shell is in a convex shape, the narrow cavity at the upper part of the inner cavity is internally provided with the steel bowl in the lock cylinder piece, and the outer wall surface of the steel bowl is in interference fit with the inner wall surface of the narrow cavity. The purpose of this design is: the inner cavity of the shell is in a convex shape, the narrow cavity at the upper part of the inner cavity is internally provided with the steel bowl in the lock cylinder piece, and the outer wall surface of the steel bowl is in interference fit with the inner wall surface of the narrow cavity, so that the steel bowl and the shell are convenient to assemble, and the steel bowl can be clamped in the narrow cavity by adopting the interference fit and is kept still; in addition, the inner wall surface of the narrow cavity is longitudinally provided with the plurality of convex strips, and the outer wall surface of the steel bowl is in interference fit with the inner wall surface of the narrow cavity formed by the plurality of convex strips, so that the roundness requirement of the tapered inner wall surface of the narrow cavity and the roundness requirement of the tapered outer wall surface of the steel bowl can be greatly reduced, the production cost of parts is reduced, the coaxiality of the steel bowl and other lock core pieces in assembly is improved, and the anti-theft needle is ensured to be smoothly inserted and pulled out.

5. The upper end face of the bottom cover is provided with a plurality of convex blocks which are distributed in a circular shape, the upper end of the bottom cover is provided with a lock cylinder body through a spring, the upper end of the lock cylinder body is provided with a plurality of lock cylinder balls, the lower end of the lock cylinder body is provided with a bearing ring, the bearing ring is positioned in a limiting groove formed by the surrounding of the convex blocks, the diameter of the limiting groove is matched with that of the bearing ring, the bearing ring is provided with a plurality of limiting blocks, and a partition plate slot is formed between each limiting block and the corresponding bearing plate; the inner circular wall surface of the upper cover is provided with a plurality of partition plates, and the design that the plurality of partition plates are inserted into the corresponding partition plate slots after the upper cover and the bottom cover are assembled is the fifth technical characteristic of the invention. The purpose of this design is: firstly, because the bearing ring is provided with a plurality of limiting blocks, and the dividing plate slots are arranged between the limiting blocks and the corresponding bearing plates, a plurality of dividing plates are inserted into the corresponding dividing plate slots after the upper cover and the bottom cover are assembled, and the dividing plates play a limiting and guiding role on the bearing ring in the up-and-down moving process of the bearing ring, so that the bearing ring can only move up and down; and secondly, the inner circular wall surface of the upper cover is provided with a plurality of partition plates, and the partition plates are fixedly connected with the inner wall surface and the top surface of the wide cavity at the lower part of the convex-shaped inner cavity, so that the partition plates and the upper cover are high in combination fastness, and the service life of the partition plates can be prolonged.

6. The upper end face of the bottom cover is provided with a plurality of convex blocks which are distributed in a circular shape, the upper end of the bottom cover is provided with a lock cylinder body through a spring, the upper end of the lock cylinder body is provided with a plurality of lock cylinder balls, the lower end of the lock cylinder body is provided with a bearing ring, the bearing ring is positioned in a limiting groove formed by the surrounding of the convex blocks, the diameter of the limiting groove is matched with that of the bearing ring, the bearing ring is provided with a plurality of limiting blocks, and a partition plate slot is formed between each limiting block and the corresponding bearing plate; the design that the upper end face of the bottom cover is provided with a plurality of partition plates and the partition plates are positioned in the corresponding partition plate slots is the sixth technical characteristic of the invention. The purpose of this design is: firstly, because the bearing ring is provided with a plurality of limiting blocks, and the dividing plate slots are arranged between the limiting blocks and the corresponding bearing plates, and the dividing plates are positioned in the corresponding dividing plate slots, the dividing plates play a limiting and guiding role on the bearing ring in the up-and-down moving process of the bearing ring, and ensure that the bearing ring can only move up and down; secondly, the upper end face of the bottom cover is provided with a plurality of partition plates, and when the bearing ring and the lock cylinder column body are arranged at the upper end of the bottom cover through the spring, the partition plates play a role in positioning and installing the bearing ring, so that the assembly efficiency of the device is improved.

7. The lock core column body is characterized in that a first annular flange is arranged on the inner wall surface of an upper port of the bearing ring through hole, a second annular flange is arranged on the outer circular surface of the lower end of the lock core column body, and the lower end surface of the first annular flange is in contact with the upper end surface of the second annular flange after the lock core column body passes through the bearing ring through hole from the lower port of the bearing ring through hole. The purpose of this design is: the inner wall face of the upper port of the bearing ring through hole is provided with a first annular flange, the outer circular face of the lower end of the lock cylinder column body is provided with a second annular flange, the lower end face of the first annular flange is in contact with the upper end face of the second annular flange after the lock cylinder column body passes through the bearing ring through hole from the lower port of the bearing ring through hole, and the bearing ring and the lock cylinder column body are of split structures, so that the manufacturing difficulty of the bearing ring and the lock cylinder column body is reduced (compared with the integral structure of the bearing ring and the lock cylinder column body), and the bearing ring and the lock cylinder column body of the split structures have micro deformation adjustment during assembly, so that the assembly qualification rate of the device is increased, and the probability of blocking phenomenon of the bearing ring and the lock cylinder column body in the use process is reduced.

8. The lower end of the outer circular surface of the bottom cover is provided with a plurality of first lugs and a plurality of strip-shaped grooves, the plurality of strip-shaped grooves are positioned above the first lugs, the lower end of the inner wall surface of the upper cover is provided with a plurality of notches and a plurality of strip-shaped convex ribs, after the upper cover and the bottom cover are assembled, the notches are in inserting fit with the corresponding first lugs, and the strip-shaped convex ribs are in concave-convex fit with the corresponding strip-shaped grooves. The purpose of this design is: the lower extreme of the outer disc of bottom is equipped with a plurality of lugs one and a plurality of bar groove is located the top of a plurality of lugs one, the lower extreme of upper cover internal face is equipped with a plurality of breachs and a plurality of bar protruding muscle, and breach and the protruding muscle of the lug of correspondence and the unsmooth cooperation of bar groove that corresponds after upper cover and bottom assembly, can realize the quick buckle installation of bottom and upper cover like this, and the protruding muscle of bar will improve combination fastness between them with the unsmooth cooperation of the bar groove that corresponds simultaneously.

The technical scheme 1: the utility model provides a commodity protection device, the casing that includes, be equipped with the lock core spare that is used for pinning the theftproof needle in the inner chamber of casing, the lower extreme of the lock core cylinder in the lock core spare is equipped with the outer disc that bearing ring and bearing ring are equipped with the polylith bearing plate, and the up end that is equipped with a plurality of lugs and lug in the annular cavity between the outer disc wall of bearing ring and the interior round wall of casing is the slope, is equipped with clearance and clearance between two adjacent lugs and is located the bearing plate below that corresponds, the slope bottom department that is equipped with division board and lug between lug and the bearing plate that is located this lug bottom side slope is equipped with the steel ball, and the steel ball can roll to the corresponding bearing plate from the slope bottom under the effect of external force.

The technical scheme 2 is as follows: a method for using a commodity protection device comprises the following steps that firstly, the commodity protection device locked with an anti-theft needle is placed on a rotatable magnetic unlocking device, the rotatable magnetic unlocking device drives a plurality of steel balls to roll to corresponding bearing plates from the bottom of a slope along respective slopes through magnetic force, at the moment, the magnetic force in the vertical direction in the magnetic unlocking device attracts the steel balls at the same time, the steel balls drive corresponding bearing rings, lock cylinder bodies and lock cylinder balls to move downwards under the action of the attractive force, a spring is compressed in the downward movement process of the lock cylinder bodies, and meanwhile, the anti-theft needle is unlocked; and step two, after the anti-theft needle is pulled out, the commodity protection device is taken out from the magnetic unlocking device, the bearing ring, the lock cylinder column body and the lock cylinder balls move upwards together and return to the original position under the action of the restoring force of the spring, and at the moment, the steel balls return to the bottom of the slope along the slope under the action of the weight.

Compared with the background art, the device has the advantages that firstly, fewer parts are used for assembly, the complexity of the structure of the parts is lower, the assembly efficiency is improved, and the production cost is reduced; secondly, the device does not need a rotating part, a positioning groove and a clamping groove which are arranged in the original device in the background technology, and the structure of the lock cylinder column body is simpler, so that the device has more compact structure and more reasonable layout, thereby greatly reducing the volume; thirdly, this device is high not only safety in utilization, uses the fault rate low moreover.

Drawings

Fig. 1 is a schematic perspective view of a merchandise protection device.

Fig. 2 is a schematic sectional view of an article protection device.

Fig. 3 is a schematic perspective view of the assembled cylinder body and bearing ring.

Fig. 4 is a schematic perspective view of a load-bearing ring.

Fig. 5 is a schematic view of a front view of a load bearing ring.

Fig. 6 is a perspective view of the cylinder body of the lock cylinder.

Fig. 7 is a perspective view of the bottom cover.

Fig. 8 is a front view structure diagram of the bottom cover.

Fig. 9 is a schematic perspective view of the upper cover.

Fig. 10 is a schematic top view of the upper cover.

Fig. 11 is a perspective view of the assembled upper cover and bearing ring.

Fig. 12 is a bottom view of the assembled upper cover and load-bearing ring.

Fig. 13 is a front view of the bottom cover, the cylinder body and the bearing ring after assembly.

Detailed Description

Example 1: reference is made to fig. 1-13. A commodity protection device comprises a shell 1 consisting of an upper cover 11 and a bottom cover 12, a lock core piece 3 for locking an anti-theft needle is arranged in an inner cavity of the shell 1, the lower end of the lock cylinder body 31 in the lock cylinder 3 is provided with a bearing ring 5, the outer circular surface of the bearing ring 5 is provided with a plurality of bearing plates 51, a plurality of bearing plates 51 are equidistantly arranged on the outer circular surface of the bearing ring 5, a plurality of convex blocks 6 are arranged in an annular cavity between the outer circular wall surface of the bearing ring 5 and the inner circular wall surface of the shell 1, the upper end surfaces of the convex blocks 6 are slope surfaces, the convex blocks 6 are arranged on the bottom surface of the inner cavity of the shell 1, a gap 7 is arranged between every two adjacent convex blocks 6, the gap 7 is positioned below the corresponding bearing plate 51, a partition plate 8 is arranged between the convex block 6 and a bearing plate 51 positioned at the slope bottom side of the convex block 6, a steel ball 9 is arranged at the slope bottom of the convex block 6, under the action of external force, the steel ball 9 can roll along the slope from the slope bottom to the corresponding bearing plate 51. The upper end face of the shell 1 is provided with a through hole 13 which is mutually communicated with the inner cavity of the shell 1, the through hole 13 is positioned right above the lock core piece 3, the lock core piece 3 is arranged in the inner cavity of the shell 1 through a spring 4, the height of the slope top of the convex block 6 is matched with the height of a bearing plate 51 positioned on the slope top side of the convex block 6, the convex block 6 is an arc-shaped convex block, and thus the slope face at the upper end of the convex block 6 is an arc-shaped slope. Preferably, the number of the arc-shaped convex blocks is three, the number of the bearing plates 51 is three, the number of the gaps 7 is three, the number of the partition plates 8 is three, and the number of the steel balls 9 is three; the annular cavity is equally divided into three independent chambers by three partition plates 8, and each chamber contains a corresponding arc-shaped convex block and a bearing plate 51, so that the mutual interference of the steel balls 9 is avoided.

The bottom surface of the inner cavity of the shell 1 is provided with a spring limiting insert block 10 or a spring limiting slot, the lower end of the spring 4 is in inserting fit with the spring limiting insert block 10 or the spring limiting slot, the upper end of the spring 4 is in contact with the lower end surface of the lock cylinder body 31, and the lock cylinder body 31 and the bearing ring 5 are arranged on the bottom surface of the inner cavity of the shell 1 through the support of the spring 4. The steel ball parking platform 61 is arranged at the slope bottom of the convex block 6, the upper end face of the bearing plate 51 is an inclined face, and the height of the lower side end of the bearing plate 51 is matched with the height of the corresponding slope top of the convex block 6. The inner cavity of the shell 1 is in a convex shape, a steel bowl 32 in the lock cylinder member 3 is arranged in a narrow cavity at the upper part of the inner cavity, and the outer wall surface of the steel bowl 32 is in interference fit with the inner wall surface of the narrow cavity. The inner wall surface of the narrow cavity is longitudinally provided with a plurality of convex strips, and the outer wall surface of the steel bowl 32 is in interference fit with the inner wall surface of the narrow cavity formed by the convex strips. When the spring 4 elastically supports the lock cylinder body 31 and the bearing ring 5, the upper end surface of the bearing ring 5 is contacted with the inner top surface of the wide cavity at the lower part of the convex-shaped inner cavity.

The upper end face of the bottom cover 12 is provided with a plurality of lugs 6, the lugs 6 are distributed in a circular shape, the upper end of the bottom cover 12 is provided with a lock cylinder body 31 through a spring 4, the upper end of the lock cylinder body 31 is provided with a plurality of lock cylinder balls 33, the lower end of the lock cylinder body 31 is provided with a bearing ring 5, the bearing ring 5 is positioned in a limiting groove 14 formed by the plurality of lugs 6 in a surrounding mode, the diameter of the limiting groove 14 is matched with that of the bearing ring 5, the bearing ring 5 is provided with a plurality of limiting blocks 52, a partition plate inserting groove 53 is formed between each limiting block 52 and a corresponding bearing plate 51, each limiting block 52 is positioned right above a corresponding steel ball parking platform 61, and the distance between each limiting block 52 and the corresponding steel ball parking platform; the inner circular wall of the upper cover 11 is provided with a plurality of partition plates 8, and the plurality of partition plates 8 are inserted into the corresponding partition plate slots 53 after the upper cover 11 and the bottom cover 12 are assembled. The partition plate 8 is fixedly connected with the inner wall surface and the top surface of the wide cavity at the lower part of the convex-shaped inner cavity, so that the combination fastness of the partition plate 8 and the upper cover 11 is high, and the service life of the partition plate 8 can be prolonged; the partition plate 8 plays a guiding, limiting and guiding role for the bearing ring 5 in the process that the bearing ring 5 moves up and down.

The inner wall surface of the upper port of the through hole of the bearing ring 5 is provided with a first annular flange 54, the outer circular surface of the lower end of the lock cylinder column body 31 is provided with a second annular flange 311, and after the lock cylinder column body 31 passes through the through hole of the bearing ring 5 from the lower port of the through hole of the bearing ring 5, the lower end surface of the first annular flange 54 is in contact with the upper end surface of the second annular flange 311. The lower end of the outer circular surface of the bottom cover 12 is provided with a plurality of first lugs 121 and a plurality of strip-shaped grooves 122, the plurality of strip-shaped grooves 122 are positioned above the plurality of first lugs 121, the lower end of the inner wall surface of the upper cover 11 is provided with a plurality of notches 111 and a plurality of strip-shaped convex ribs 112, the notches 111 are in splicing fit with the corresponding first lugs 121 after the upper cover 11 and the bottom cover 12 are assembled, and the strip-shaped convex ribs 112 are in concave-convex fit with the corresponding strip-shaped grooves 122. The bar-shaped ribs 112 are arc-shaped ribs.

Example 2: based on example 1. The upper end surface of the bottom cover 12 is provided with a plurality of lugs 6, the lugs 6 are distributed in a circular shape, the upper end of the bottom cover 12 is provided with a lock cylinder body 31 through a spring 4, the upper end of the lock cylinder body 31 is provided with a plurality of lock cylinder balls 33, the lower end of the lock cylinder body 31 is provided with a bearing ring 5, the bearing ring 5 is positioned in a limiting groove 14 formed by the plurality of lugs 6 in an enclosing mode, the diameter of the limiting groove 14 is matched with that of the bearing ring 5, the bearing ring 5 is provided with a plurality of limiting blocks 52, and a partition plate slot 53 is formed between each limiting block 52 and the corresponding bearing plate 51; the upper end surface of the bottom cover 12 is provided with a plurality of partition plates 8, and the partition plates 8 are positioned in the corresponding partition plate slots 53.

Example 3: based on the embodiment 1 and the embodiment 2. A method for using a commodity protection device comprises the steps that firstly, the commodity protection device locked with an anti-theft needle is placed on a rotatable magnetic unlocking device, the rotatable magnetic unlocking device drives a plurality of steel balls 9 to roll to corresponding bearing plates 51 from the bottom of a slope through magnetic force, at the moment, the magnetic force in the vertical direction in the magnetic unlocking device attracts the steel balls 9 at the same time, the steel balls 9 drive corresponding bearing rings 5 and lock core column bodies 31 to move downwards together with a plurality of lock core balls 33 under the action of attractive force (the bearing rings 5 move downwards to enter limiting grooves 14 formed by a plurality of arc-shaped lugs 6, meanwhile, the bearing plates 51 move downwards to enter corresponding gaps 7), and when the lock core column bodies 31 move downwards, springs 4 are compressed, and the anti-theft needle is unlocked; and step two, after the anti-theft needle is pulled out, the commodity protection device is taken out from the magnetic unlocking device, the bearing ring 5, the lock cylinder column body 31 and the plurality of lock cylinder balls 33 move upwards together and return to the original position under the action of the restoring force of the spring 4, and at the moment, the steel ball 9 returns to the bottom of the slope along the slope under the action of the weight.

It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.

Claims

1. A commodity protection device, comprising a casing (1), a lock cylinder (3) for locking an anti-theft needle is provided in the inner cavity of the casing (1), characterized in that: the lock cylinder The lower end of the lock cylinder cylinder (31) in the part (3) is provided with a load-bearing ring (5), and a plurality of load-bearing plates (51) are arranged on the outer circular surface of the load-bearing ring (5). The annular cavity between the circular wall surface and the inner circular wall surface of the housing (1) is provided with a plurality of bumps (6), and the upper end surface of the bumps (6) is a slope surface, and two adjacent bumps ( 6) There is a gap (7) between and the gap (7) is located below the corresponding load-bearing plate (51), the bump (6) and the load-bearing plate (51) on the bottom side of the slope of the bump (6) are located between the bumps (6). There is a partition plate (8) between them and a steel ball (9) is arranged at the bottom of the slope of the bump (6). Under the action of external force, the steel ball (9) can roll along the slope from the bottom of the slope to the corresponding load-bearing board (51).

2 . The product protection device according to claim 1 , wherein the upper end surface of the casing ( 1 ) is provided with a through hole ( 13 ) that communicates with the inner cavity of the casing ( 1 ), and the through hole (13) is located directly above the lock cylinder member (3), the lock cylinder member (3) is arranged in the inner cavity of the housing (1) through the spring (4), and the height of the slope top of the convex block (6) is Matching with the height of the bearing plate (51) on the slope top side of the bump (6), the bump (6) is an arc bump.

3. A product protection device according to claim 1, characterized in that: the bottom surface of the inner cavity of the casing (1) is provided with a spring limit insert block (10) or a spring limit slot, and the spring ( The lower end of 4) is inserted and matched with the spring limit insert block (10) or the spring limit slot, and the upper end of the spring (4) is in contact with the lower end surface of the lock cylinder cylinder (31), the lock cylinder cylinder (31) and the bearing ring (5) are arranged on the bottom surface of the inner cavity of the housing (1) through the support of the spring (4).

The product protection device according to claim 1, characterized in that: a steel ball parking platform (61) is provided at the bottom of the slope of the bump (6), and the upper end surface of the load-bearing plate (51) is provided with a steel ball parking platform (61). It is an inclined surface and the height of the low side end of the bearing plate (51) matches the height of the slope top of the corresponding bump (6).

5. A commodity protection device according to claim 1, characterized in that: the inner cavity of the casing (1) is in a "convex" shape and a lock cylinder (3) is provided in the narrow cavity at the upper part of the inner cavity. ) in the steel bowl (32) and the outer wall surface of the steel bowl (32) is an interference fit with the inner wall surface of the narrow cavity.

6. A product protection device according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the upper end surface of the bottom cover (12) is provided with a plurality of bumps (6) and a plurality of bumps ( 6) Circular distribution, the upper end of the bottom cover (12) is provided with a lock cylinder cylinder (31) through a spring (4), and the upper end of the lock cylinder cylinder (31) is provided with a plurality of lock cylinder balls (33) The lower end is provided with a load-bearing ring (5), the load-bearing ring (5) is located in the limit groove (14) surrounded by a plurality of bumps (6), and the diameter of the limit groove (14) is the same as that of the load-bearing ring ( 5) are matched in diameter, the load-bearing ring (5) is provided with a plurality of limit blocks (52) and the spacer plate slots (53) are arranged between the limit blocks (52) and the corresponding load-bearing plates (51). ); a plurality of partition plates (8) are arranged on the inner circular wall of the upper cover (11), and after the upper cover (11) and the bottom cover (12) are assembled, the plurality of partition plates (8) are inserted into the corresponding into the divider plate slot (53).

7. A commodity protection device according to claim 1 or 2 or 3 or 4 or 5, wherein the upper end surface of the bottom cover (12) is provided with a bump (6) and the bump (6) is round The upper end of the bottom cover (12) is provided with a lock cylinder cylinder (31) through a spring (4), and the upper end of the lock cylinder cylinder (31) is provided with a plurality of lock cylinder balls (33), and the lower end is provided with a plurality of lock cylinder balls (33). A load-bearing ring (5), the load-bearing ring (5) is located in a limit groove (14) surrounded by a plurality of projections (6), and the diameter of the limit groove (14) is the same as the diameter of the load-bearing ring (5) Matching, the load-bearing ring (5) is provided with a plurality of limit blocks (52) and a partition plate slot (53) is arranged between the limit blocks (52) and the corresponding load-bearing plate (51); the The upper end surface of the bottom cover (12) is provided with a plurality of partition plates (8), and the partition plates (8) are located in the corresponding partition plate slots (53).

8. A product protection device according to claim 1, characterized in that: the inner wall surface of the upper port of the through hole of the load-bearing ring (5) is provided with a first annular flange (54), and the lock cylinder A second annular flange (311) is provided on the outer circular surface of the lower end of the body (31), and the lock cylinder cylinder (31) passes through the through hole of the bearing ring (5) through the lower port of the through hole of the bearing ring (5). The lower end face of an annular flange (54) is in contact with the upper end face of the second annular flange (311).

9. A product protection device according to claim 1, characterized in that: the lower end of the outer circular surface of the bottom cover (12) is provided with a plurality of bumps (121) and a plurality of strip grooves (122) and The plurality of strip-shaped grooves (122) are located above the plurality of first bumps (121), and the lower end of the inner wall surface of the upper cover (11) is provided with a plurality of notches (111) and a plurality of strip-shaped ribs (112). After the upper cover (11) and the bottom cover (12) are assembled, the notches (111) are inserted and matched with the corresponding first bumps (121), and the strip-shaped ribs (112) are in concave-convex matching with the corresponding strip-shaped grooves (122).

10. A method of using a commodity protection device, characterized in that: in step 1, first place the commodity protection device locked with an anti-theft needle on a rotatable magnetic unlocking device, and the rotating magnetic unlocking device drives a plurality of steel balls by magnetic force (9) Roll along the respective slopes from the bottom of the slope to the corresponding load-bearing plate (51). At this time, the vertical magnetic force in the magnetic lock will attract multiple steel balls (9) at the same time. Under the action of gravity, the corresponding load-bearing ring (5), the lock cylinder cylinder (31) and the plurality of lock cylinder balls (33) are driven to descend together, and the spring (4) is compressed during the downward movement of the lock cylinder cylinder (31). At the same time, the anti-theft needle is unlocked; in step 2, after the anti-theft needle is pulled out, the product protection device is taken out from the magnetic unlocker, and the load-bearing ring (5) and the lock cylinder cylinder (31) are under the action of the restoring force of the spring (4). Go up together with a plurality of lock cylinder balls (33) and return to the original position. At this time, the steel balls (9) will return to the bottom of the slope along the slope under the action of weight.